Contact us today:
(847) 934-4500
tdaro@bernardandcompany.com
Contact us today:
(847) 934-4500
tdaro@bernardandcompany.com
The advantages for the user are obvious. In the past, it was necessary to decide in favour of one of the three technologies. Now, with the VTC 315 DS, it is possible to choose the technology that best suits individual applications. Dr. Guido Hegener, the executive responsible for grinding technology at EMAG Salach Maschinenfabrik GmbH, comments on the diverse applications: “We are consistently following the path of combination machining. As a rule, our customers manufacture different workpieces on the machine. We intend to offer them the best technology for every application.” The VTC 315 DS is of interest to those engaged in the manufacture of medium and large batches of high-quality components such as gear shafts, rotor shafts, pump shafts, motor shafts or cardan shafts. The machining technology is chosen accordingly. Sturdy workpieces are machined using the scroll-free turning technology. The grinding technology is preferred for smaller, less stable components. “This makes us more flexible and allows us to choose the right technology for every individual requirement”, explains Dr. Guido Hegener the advantages. The machine can be used as a fully-fledged grinding machine, or a fully-fledged turning machine, or a combination of both. When choosing a technology one should take a closer look at the cycle time and, in particular, at the tooling cost. Unit production costs are usually higher with hard turning and scroll-free turning than with grinding, although CBN grinding wheels – in absolute terms – are rather expensive. It is for this very reason that the user has to decide on a case by case which manufacturing technology to use.
Different technology modules for different workpieces
The developers of the VTC were also considering the machine as an investment in the future. Should production requirements change, the machine can be equipped – at very little expense and effort – with different technology modules that make it suitable for machining of the new workpiece. At present, the technology modules available are:
This guarantees flexibility in the use of the machine and opens up a wide range of applications, especially as all the technologies can be applied also in combination.
VTC production lines
The VTC 315 DS is ideally suited for complex manufacturing processes. Whether the job includes the high metal removal rates of turning and milling or the gentler grinding process – the VTC series of machines offers the possibility to integrate most of the metal cutting processes. This allows for the creation of complete VTC production lines for soft and hard machining. Turning, milling, drilling, grinding and gear hobbing have already been modularised for this particular machine platform. It provides the VTC with an extensive field of application. “We have already installed complete production lines of VTC machines for the soft machining of crankshafts. Almost all of the operations could be accommodated on machines from the VTC series”, this is how Markus Woitsch, chief of the production team for shaft machines, explains the production line concept of the VTC. Naturally, subjects like spare part stocks and unified machine operation also play a decisive role in the eye of the customer. With a production line that interlinks a number of different VTC machines and utilises different manufacturing technologies, spare part stocks can be drastically reduced, as 80% of the VTC machine components are the same. Only the technology modules change, when a VTC has to be adapted for a new machining requirement. 
Complete-machining through technology combination
The VTC 315 DS accommodates turning as well as grinding technologies. For example, the turret carries out all turning operations, while the second station is used for the grinding work. This way, shafts can be complete-machined: the cylindrical bearing seats, the shoulders and the grooves – all machined in a single set-up. “Clamping errors play a particularly important part when it comes to high-performance components. Radial runout can be much reduced when a workpiece does not have to be re-clamped several few times”, elucidates Dr. Guido Hegener on the quality of the machine. To keep downtimes caused by tool changes to a minimum, sister tooling is provided for all turning operations. And the tool life of grinding wheels is so high that the time taken up by a wheel change is of no consequence.
The VTC 315 DS design
A distinguishing feature of the VTC 315 DS is its sturdiness and rigidity. At its heart is the machine base in Mineralit® (polymer granite). The damping properties of this material is 8 times that of grey cast iron, which makes it particularly well suited for hard machining operations like grinding or hard turning. The results are improved tool life and a better surface finish. The vertical design also aids unhindered chip flow. Manual removal of chips is hardly ever necessary. This is particularly important in soft machining, as it often involves volume-intensive chipping operations. The vertical construction is also of advantage where the footprint is concerned. Machines with horizontal spindle and tailstock take up a lot of space width-ways. That raises floor space requirements and costs money. Vertical machines develop upwards, and that – as we know – costs nothing. Automation on the VC 315 DS lies in the turret. A gripper, housed in the turret, collects the raw-part from its storage section and transfers it to the clamping position. Once the workpiece is machined, it is transferred out of the machine the same way. And thus the machine automates itself. The generously dimensioned machine assemblies, such as the work spindle with 330 Nm constant torque, and the grinding spindle with a power rating of 30 kW, have so much reserve capacity that even heavy metal removal work can be carried out on the machine. The control system used is a Siemens 840 D with EMAG grinding software that simplifies programming and operation.
The advantages of the VTC 315 DS:
For more information:
EMAG LLC
38800 Grand River Avenue
Farmington Hills, MI 48335
Tel: (248) 875-0313
Fax: (248) 477-7784
E-mail: info@usa.emag.com
Web: www.emag.com
Attention: Peter Loetzner
Kastalon engineers match assorted textured surfaces and material hardnesses to the application.
Kastalon offers mills and processors highly engineered polyurethane mandrel sleeves, filler plates and filler rings with material hardness and surface options to match customer needs, protecting coils from damage
Kastalon brings 50 years experience in coil processing to the task of engineering a new offering of application-specific, proprietary formulated polyurethane mandrel sleeves, filler rings and filler plates. These products are designed to adapt the mandrel to handle coils with larger ID’s and addresses the problems of damage from creasing, scratching and marring at mills, service centers, toll processors and fabricators alike. Such damage is expensive for any coil handling operation, especially when the metal is prepainted or must maintain optimum cosmetic surface integrity. By the use of Kastalon mandrel sleeves, filler rings or filler plates on the uncoiler or recoiler, the inside wraps on coils are protected from metal to metal contact. More finished material is produced or usable, as a result.
Mandrel sleeves are custom designed with engineered surface hardnesses and grooved or smooth finishes, depending on the particular application. Full sleeves are usually recommended for the recoilers, while filler rings and filler plates are more often utilized for uncoilers.
The design process begins at the company website, where a detailed needs-assessment questionnaire can be completed, followed by a discussion with Kastalon engineering to formulate the proper chemistry, surface and material hardness for the application.
In use, the proprietary chemistry of the Kastalon Polyurethane material withstands the stress caused by the weight of the coil, then reforms when the mandrel is collapsed back to the rest position, owing to the inherent memory of the Kastalon engineered material. With other materials now on the market, sleeves will often sag due to memory loss and the resulting gap can cause significant coil damage. Correspondingly, additional labor and line downtime result from this condition, as realignment of the coil, sleeve and mandrel is needed. Through the true and precise sizing of the mandrel sleeve, combined with the proper material hardness and surface texturing, a Kastalon sleeve can last up to 10 times longer than rubber, fiber or even other commodity type polyurethane products, according to company research, available on request.
Mandrel sleeves, filler rings and filler plates allow coil processing to be accomplished more efficiently, whether on uncoil or recoil reels, at mills, service centers, toll processors and fabricators.
Kastalon mandrel sleeves are non-marring, cut-resistant, abrasion-resistant and offered for friction fit, requiring a separate “keeper”, or bolt-on installation. Company engineers consult customers on the amount of lubricant, cleaning solution or other coating chemistries present in the process, as this will determine the particular formulation selected. Furthermore, Kastalon offers these mandrel sleeves in a wide variety of grooved or soft surface finishes to meet the specific tension and pressure requirements of a processor’s uncoil/recoil apparatus. Special dual-durometer sleeves are also available for mills and processors where “head-in” damage is often encountered.
Kastalon engineers match assorted textured surfaces and material hardnesses to the application.
For most uncoilers, Kastalon filler rings or filler plates can provide the optimum performance for the tension, pressure and metal contact requirements typically present.
The design process for Kastalon mandrel sleeves can begin with a visit to the company’s website, www.kastalon.com, for completion of a needs assessment questionnaire. Detailed information is gathered on this form, allowing the Kastalon engineers to calculate the best sleeve design and chemical composition to suit the job.
For more information on this product, please contact:
KASTALON, INC.
4100 W. 124th Place
Alsip, IL 60803
Phone: 708-389-2210
Fax: 708-389-0432
Web: www.kastalon.com
Email: sales@kastalon.com
Attention: Marty Pokorney
Press Conference for the Americas — EMO Hannover / Hall 25, booth D33
Broad-based CNC competence: Siemens will be demonstrating how productivity, flexibility and safety can be increased in CNC production with an array of smart additions to its Sinumerik portfolio.
Industrial corporations are facing deep-rooted changes in the world of manufacturing. These changes are taking place alongside increasing integration of product development and production processes with the benefit of innovative software systems and high-performance software — a decisive step on the road toward a new industrial age in manufacturing. “Siemens has invested a lot of work in the integration of automation technology along the entire value chain over a period of many years, and is playing a cutting-edge role in shaping the future of production,” stated Bernd Heuchemer, Vice-President, Global Marketing and Communications, Siemens AG, Drive Technologies Division, Motion Control Systems Business, at a press conference held in the run-up to the EMO 2013 recently. “In the Sinumerik environment in particular, and consequently in the field of CNC production in general, Siemens has been heavily involved for many years already in the area of simulation and the virtual machine, as well as the integration into factory IT systems. Our aim is to drive this process of integration forward to ensure that the field of machine tool construction is also prepared to embrace the next step in the industrial revolution,” continued Heuchemer.
With its Sinumerik family, Siemens offers an integral portfolio of CNC for everything from simple machine tools through standardized machine concepts to modular premium solutions, complete with “smart machine” solutions for the economical manufacture of high-end workpieces. It is working towards the consistent expansion of this CNC technology expertise. “In the future, production models will demand ever greater productivity, flexibility and efficiency, while at the same time expecting simplified machine operation and production sequences. As it continues to develop the Sinumerik CNC portfolio, Siemens is working to satisfy all these expectations,” said Rajas Sukthankar, General Manager, Siemens Industry, Inc., Machine Tool Systems Business. The innovations presented by Siemens at the EMO 2013 will consequently focus on smart function improvements, which will make for greater CNC operating convenience, increase precision at the workpiece and allow greater machining safety across every category of machine, from the compact to the high-end solution. A new function to protect against unwanted component collisions will be showcased by Siemens, for example, alongside improvements to its cohesive Sinumerik Operate user interface, including upgraded simulation options.
The Sinumerik CNC portfolio is additionally playing an increasingly important role in preparing the ground for the next step in the evolution of CNC production, also within the framework of the Siemens Integrated Drive System (IDS). With a view to optimizing the addition of value across the entire process chain through consistent integration, IDS is used to integrate all the components of the drive train consistently into the complete production process environment. This also applies to Sinumerik CNC system solutions.
For every Sinumerik application, ideally coordinated system components such as high-powered Sinamics drives and Simotics motors have always been used as the ideal complements. Alongside horizontal integration of the entire drive train, with Sinumerik Integrate for Production, Siemens is also allowing vertical integration within the control architecture of industrial manufacturing automation. As the example of a leading passenger car manufacturer illustrates, this type of vertical and horizontal integration within the production process can speed up the series start for a new vehicle by up to 50 percent.
The integration across the entire product life cycle can in turn be implemented using suitable Product Lifecyle Management (PLM) software solutions from Siemens. This concept is already being implemented by leading metals processing industries such as the automotive, aerospace and medical technology sectors. This entails the increasing execution of product development and production planning onscreen, before a single machine tool has even been installed. If a modular machine is developed on a virtual basis right from the outset so that it can be fully simulated, time savings up to 40 percent can be achieved. In running operation, productivity increases of 10 percent or more are also made possible by continued simulation and optimization. At this year’s EMO, Siemens will be showcasing the further development of its PLM software, which encompasses scalable solutions for component production and further improved IT integration from the workpiece model through to the machine tool. Siemens will also be revealing the next stage in productivity for NC programming with the further development of its already popular PLM software, NX CAM. Going forward, this software will include special industry-specific machining functions as well as access to a new Manufacturing Resource Library.
Siemens is extending its preparations for the next step in manufacturing to offer the machine tool building industry an emerging series of integrated solutions. An integrated workpiece measurement system, with a measurement accuracy of 30 nanometers deployed in the world’s biggest precision optics machine, allows the production of telescopes capable of seeing up to 13 billion light years into space.
For more information on Siemens SINUMERIK CNC, visit www.usa.siemens.com/cnc.
For specific product information and inquiries, call (800) 879-8079 ext. Marketing Communications or send an e-mail to: SiemensMTBUMarCom.industry@siemens.com.
Follow us on Facebook: www.facebook.com/SiemensCNC
or Twitter: www.twitter.com/siemens_cnc_us
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Siemens Industry Sector is the world’s leading supplier of innovative and environmentally friendly products, solutions and services for industrial customers. With end-to-end automation technology and industrial software, solid vertical-market expertise, and technology-based services, the sector enhances its customers’ productivity, efficiency and flexibility. With a global workforce of more than 100,000 employees, the Industry Sector comprises the Industry Automation, Drive Technologies and Customer Services Divisions as well as the Metals Technologies Business Unit. For more information, visit http://www.usa.siemens.com/industry.
The Siemens Drive Technologies Division is the world’s leading supplier of products, systems, applications, solutions and services for the entire drive train, with electrical and mechanical components. Drive Technologies serves all vertical markets in the production and process industries as well as the infrastructure/energy segment. With its products and solutions, the division enables its customers to achieve productivity, energy efficiency and reliability. For more information, visit http://www.usa.siemens.com/drivetechnologies.
The International Monetary Fund (IMF) estimates that the world economy will grow by 3.5 percent this year, with the impetus coming less from Europe and more from dynamic, newly industrialized countries. One example is the automotive industry. According to the association for the German automotive industry (VDA), China’s share of the market in passenger cars increased by 59% and that of Brazil by 18% during the first few months of 2013. The same market is also growing in India and Russia. For a long time, new production facilities have been planned and are under construction, providing great opportunities for the machine tool industry – as the example of EMAG proves. Specialists are developing turnkey manufacturing systems that are tailor-made to suit specific market conditions, with the new production facilities in particular gaining substantially from this increased market activity.
Whether in the automotive or energy supply industry, the development of industrial key sectors within the BRIC countries (Brazil, Russia, India, China) has a direct influence on the machine tool industry, as it is this branch that, in the end, must supply most of the necessary manufacturing solutions. There are numerous indicators for this fact. For instance, according to Germany Trade and Invest (GTAI), the Russian enclave of Kaliningrad will – over the next 3 years – will see an investment of 3 billion Euro in six assembly facilities and fifteen sub-supply companies for the national automotive industry, with more international sub-suppliers also establishing outlets in the market. Similar activities are reported from Brazil. According to Anfavea, the country’s automobile association, approximately 22 billion USD are to be invested in production between now and 2015. In India, economic growth is generally attracting “an abundance of investment projects in the country’s infrastructure, as well as in new industrial complexes,” states GTAI.
The German machine tool industry is prepared for such a dynamic development and the opportunities it provides can be seen in the textbook case of EMAG. Their specialists see themselves as “partners in solutions” for the metalworking industry. Such an approach is of great importance, especially in the emerging markets. “As it happens, we don’t just deliver a machine tool. We deliver closely pinpointed manufacturing solutions that are, in every respect, tailor-made to customer requirements”, explains Dieter Kollmar, Managing Director of EMAG Holding GmbH. “This applies, of course, to typical factors such as batch sizes, component variants or, more generally, the flexibility of the processes applied. At the same time, we determine locally the technologies, automation equipment, interfaces and control systems required.“ The advantages for the customer are obvious, especially where an existing production line is extended or where a greenfield manufacturing facility must be created in a new market place. Our manufacturing systems are always “from a single source.” Even complex processes with peripheral machines and equipment are presented as turnkey projects by EMAG, thus considerably reducing the efforts of local production planners.
VL 2: Highly effective, truly outstanding space saver
The VL 2 is a pick-up turning machine with which the EMAG engineers are fulfilling a combination of two extreme demands: highest possible output rates on the smallest possible footprint. “This is a truly all-important aspect,” confirms Dieter Kollmar. “Although the floor space requirement for this vertical turning machine is just about 5 square meters, it is a machine of substantial capability, including a fully comprehensive automation concept with conveyor belt, workpiece storage and pick-up spindle. In combination with vertical turning, this results in very fast machining processes. “In other words, short loading travel guarantees the lowest possible component cost. Compared to horizontal turning machines, productivity rates increase quite noticeably. And maintaining the VL 2 is simple. All service units are freely and quickly accessible. The user can set up the machine in one step. “That too is important, when productivity levels enter the equation. Operators without prior experience, working at a new and unfamiliar location, will be able to quickly familiarize themselves with the machine. All in all, this is an optimal solution for those who want to extend production with as little investment as possible,” notes Kollmar.
VT 2-4: For demanding shaft production
A similar approach is shown with the VT 2-4 Vertical Turning Machine, with which the EMAG specialists have created an equally fast manufacturing system for shaft production. Even demanding machining processes can be realized on it. When machining shafts up to 400 mm length and 63 mm diameter, component costs reduce considerably, with extremely short chip-to-chip times (as with the VL 2) being the reason. Workpiece grippers transport the workpieces into the machine and remove them again, once they have been machined. Depending on the workpiece, the changeover can be accomplished in just 6 seconds. And the actual turning process is fast, too. 4-axis machining allows the component to be machined from two sides simultaneously. Vertical alignment of the workpieces provides consistent process integrity, as the unrestricted chip flow prevents the formation of clusters in the machining area.
Central project management
“We are convinced that these EMAG solutions are optimally designed to cover not only the specific requirements of an emerging market, but also those of Europe and the USA,” as Dieter Kollmar his company’s philosophy. Everything is greatly simplified, starting with production planning, as there is no need for separate workpiece and finished component storage, with the added advantage of a reduced floor space requirement. At the same time, the EMAG Group engineers act as central project developers, having access to machines with optimal interfaces. This guarantees a fast run-in and makes the machines maintenance-friendly. “When it is a question of arriving quickly at a wholly integrated, highly effective manufacturing solution, this approach must – from our point of view – be the first choice,“ Kollmar concludes.
For more information, please contact:
Kristal Kilgore
EMAG LLC
38800 Grand River Avenue
Farmington Hills, MI 48335
Tel: (248) 875-0313
Fax: (248) 477-7784
E-mail: kkilgore@emag.com
Web: www.emag.com
VA 700 T – Joining machine for the manufacture of composite camshafts. While one cam is heat shrinking, the next one is preheated. Equipping the heat shrinking machine with a number of preheating units allows for the optimal application of this technology to suit the task at hand.
The composite camshaft is still gaining ground in the marketplace. The main reason for this is the considerable weight reduction it brings, compared to its one-piece rival. The composite version is by now also widely used in the HGV sector. However, the main disadvantage of many current assembly processes is the high joining force applied, which creates unacceptable tolerances in positioning and alignment of the cams. By contrast, the patented heat shrink assembly process from EMAG offers a decisive advantage, as it ensures that “ready-to-fit” camshafts, gear shafts and other precision composite units can be produced without problems.
The advantages of the composite camshaft are well known: less expense, less weight, the possibility to use different materials for the various constituent components, greater flexibility in production and the ability to implement new cam geometries, such as negative radii, with ease. The necessary reduction in fuel consumption – and with it those of CO2 emissions – are easier to achieve with an increasing use of composite camshafts.
Also used for gear shafts, heat shrinking of the constituent components ensures a compact design and high functional density, as the gears are in direct contact with the shoulders.
Alternative processes for the joining of cam and shaft have one serious disadvantage: the two components cannot be joined with the necessary accuracy to avoid a subsequent finish grinding process. In many cases, the joining of cam to tube is carried out using a form-fit process like press-fitting, knurling and/or spline/serrated gearing. The joining forces required for these processes can deform the components and result in unacceptable tolerances in cam position and orientation.
The heat shrink assembly process from EMAG means precision joining
Thermal joining, i.e. the heat shrinking of cam onto tube, ensures that the required tolerances are achieved with a reaction force-free process. The know-how to tightly control the process parameters of “temperature” and “time” – and the mechanical design of the joining equipment – are of the utmost importance in this process.
An optimal combination of robot and special-concept gripping technology allows for fusion gaps of < 15 µm to be achieved safely. The concept’s great flexibility allows camshaft designers more freedom in their designs and ensures that the process can also be used for medium batch sizes, where frequent component type changes are the order of the day. The high degree of precision of the composite camshaft drastically reduces the need to subsequently grind the cams or – where precision cams are used – does away with the requirement completely. A further advantage of this process lies in the possibility of using different materials for the composite shaft. This includes forged cams, for instance in 100Cr6, or finish-ground cams, even dimensionally accurate sintered cams that do not require a downstream finish-grinding operation. Secondary components, such as bungs and endpieces, can – just like the actual shaft itself – be made of more advantageous materials.
All this allows the camshaft to be made to suit the requirements of the engine and to optimize it in terms of load bearing capacity and manufacturing costs.
And now one step further:
Where the camshaft needs to be ground after heat shrink assembly, the joining machine can be linked up to a grinder. This is particularly easy when using an EMAG grinding center of the VTC DS Series. With this setup, the joining machine robot transfers the assembled camshaft directly to the loading position on the grinding center. The advantages of this process from EMAG also apply to the machining of other components. When machining gear shafts, ground gears can be joined tightly on the shaft, without needing to account for the grinding wheel overrun at the design stage. It also minimizes the length of the shaft and makes the whole unit more compact.
Ready-to-fit, complete, heat shrunk assembled camshaft. The high degree of precision of the composite camshaft drastically reduces the need to subsequently grind the cams or – where precision cams are used – does away with the requirement altogether.
Maximum flexibility
The EMAG process is characterized by only a very few machining components being in direct contact with the workpiece. It allows for the machines to be reset in the shortest possible time (typically less than 15 minutes).
Joining in seconds and achieving the highest possible quality
The heat shrink assembly process offered by EMAG combines flexibility with productivity, while freedom of design and choice of production technologies ensure a short cycle time. While one cam is heat shrinking, the next one is already being preheated. Equipping the heat shrinking machine with a number of preheating units allows for the optimal application of this technology to the task at hand. It is these advantages that may well be the reason why so many firmly established manufacturers of camshafts and other precision assemblies are showing such a great interest in the new process, are asking for machining tests, or are already applying the process under actual production conditions. In the ideal case, the customer will take advantage of the synergy provided by the EMAG Group and ask for a complete concept to be prepared that covers everything from pre-machining to heat shrinking and end machining.
Finished assembly of a motorcycle camshaft. An optimal combination of robot and special-concept gripping technology allows the pieces to join with a fusion gap of
The advantages of the heat shrink process:
The advantages of the composite camshaft:
For more information, please contact:
Kristal Kilgore
EMAG LLC
38800 Grand River Avenue
Farmington Hills, MI 48335
Tel: (248) 875-0313
Fax: (248) 477-7784
E-mail: kkilgore@emag.com
Web: www.emag.comEMAG LLC
38800 Grand River Avenue
Farmington Hills, MI 48335
Tel: (248) 875-0313
Fax: (248) 477-7784
E-mail: info@usa.emag.com
Web: www.emag.com
Attention: Peter Loetzner
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Gümmilast material from Kastalon offers metalformers greater levels of performance and wear characteristics, compared to conventional polyurethane or Neoprene forming pads and fluid cells.
Short run forming of complex sheet metal shapes using rubber dies and pads is quick and highly effective. This technique was first accomplished using the Guerin Process. After the Second World War, the Wheelon process was developed as an improvement over the Guerin Process. A Wheelon press is capable of manufacturing large, complex, short run parts with economic tooling. This type of hydraulically actuated bladder forming is widely used in the aerospace industry today.
When the Wheelon process was first employed, the forming press fluid cells and forming pads were made of Neoprene rubber. The Neoprene formulations of the day were developed by rubber molders’ chemists. Their formulas were proprietary and highly secretive.
The high grade formulation of Neoprene used was an excellent material for the function of forming pads and fluid cells. It was tough, had very high extensibility, good cut resistance, excellent oil resistance and produced good detail with moderate pressures.
This was the standard material for Wheelon forming pads and fluid cells for many years. However, as the U.S. industrial rubber goods industry matured, its productive capacity diminished. The industry lost the capacity and knowledge required to make Neoprene pads and cells. There are presently no suppliers of rubber Wheelon or Guerin cells or pads in North America.
Product shown in use in the Wheelon process, one used extensively in the aerospace and other industries.
Fortunately, there was capacity to produce these parts from polyurethane. Polyurethane is a synthetic elastomer that is far stronger than Neoprene. Polyurethane has greater cut resistance, more abrasion resistance, greater tensile strength and has suitably high elongation for effective use in the Wheelon process.
Polyurethane is also a more environmentally stable material than the original Neoprene. Most often, when installing forming pads and upon starting forming operations, the Neoprene would be “dried out”. This would lead to shrinkage of the pad and increased stiffness. In order to install the pad and/or start the operation, it would be necessary to heat the Neoprene to restore it to its original softness and resilience. Polyurethane is far more consistent, retaining its size, shape and maintaining its softness and resilience. This eliminates the need for heat “rejuvenation”.
However, in spite of the superiority of the physical properties of polyurethane over the previously used Neoprene, there is a drawback to polyurethane. Due to its increased strength and toughness, far greater pressures must be employed to achieve acceptable part definition and this results in greater strain on the press, its components and some reduction in forming definition.
Some of the difficulties encountered with the use of commercial and even Kastalon KAS43210AE forming pads and cells are:
The challenge to industry has been to create a material that has polyurethane’s toughness and the extensibility of the lost Neoprene material.
Our initial discoveries led us to improve the traditional polyurethane formulations to increase extensibility, reduce working pressure and improve cut and tear strength in the “mid extension” ranges where these pads operate. However, this was only a compromise and a temporary solution to producing a forming pad with superior performance.
After years of continuing research, a hybrid polyurethane compound, trademarked Gümmilast by Kastalon, has been developed. The properties of Gümmilast are very similar to the original Neoprene in performance and exceed the toughness of traditional polyurethane. A comparison of the original Neoprene, Gümmilast, Kastalon KAS43210AE and commercial polyurethane is presented in the following table.
Physical Properties: Traditional Neoprene vs. Polyurethane
| Neoprene | Gümmilast KAS021909A | Kastalon KAS43210AE | Commercial PUR | |
| Hardness,Shore ATensile, psi | 55-602,002 psi | 602850 | 704153 | 704660 |
| Elongation | 773 % | 774 | 694 | 630 |
| 25% modulus | 92 psi | 133 | 201 | 221 |
| 50% | 119 psi | 184 | 260 | 282 |
| 100% | 157 psi | 229 | 340 | 360 |
| 200% | 277 psi | 262 | 434 | 475 |
| 300% | 472 psi | 337 | 522 | 670 |
| 400% | 741 psi | 471 | 738 | 985 |
| Split tear | 228 psi | 191 | 181 | 185 |
| Dynamic modulus | 289 | 372 | 733 | 836 |
The similarity between Gümmilast and the original Neoprene is apparent. In the operating range extension (250-400%), previously available polyurethanes create far higher internal stresses. The rapid increase of these stresses in this operational strain range leads to need for higher pressure and less definition. This makes tool design and the use of intensifier pads highly critical.
When using Gümmilast, the reduction in operating pressure will yield greater press life, while offering greater part definition.
Life testing of Gümmilast pads and cells is ongoing. To date, Kastalon anticipates 3-6 times the life of Improved Kastalon Polyurethane and an even greater life over commercial polyurethane.
In conclusion, Kastalon Gümmilast will provide the Wheelon Process user with a material that offers similar process ease, forming definition and reparability as experienced with the original rubber and providing significantly improved life over commercial polyurethane. Gümmilast is also available for hydroforming bladders, throw pads and Guerin Process pads.
Kastalon Gümmilast products are available from your press parts provider or from Kastalon, Inc.
For more information on this product, please contact:
KASTALON, INC.
4100 W. 124th Place
Alsip, IL 60803
Phone: 708-389-2210
Fax: 708-389-0432
Web: www.kastalon.com/engineering-guide.php
Email: sales@kastalon.com
Attention: Marty Pokorney
EMAG has a long history, starting back in 1867 in Bautzen, Germany, as an iron foundry and engineering works. Re-established 60 years ago in Eislingen, Germany, in 1952 to make lathes and special-purpose machines, today it makes manufacturing systems for precision metal components from its headquarters in Salach, Germany. Its machines range from basic round-part vertical turning centers to machining centers with as many as six axes handling large workpieces. They perform turning, milling, grinding, hobbing, drilling and more as singular purpose setup or combination machines.
The tools manufacture primarily automotive, off-highway, agricultural and oil field components. For example, EMAG tools are involved in transmission components for agricultural vehicles, such as gears, ouput shafts and idlers. “If you look at a dozer from the outside, you have a chain,” notes Peter Loetzner, CEO of EMAG’s U.S. subsidiary in Farmington Hills, Mich. “There are two large precision wheels that drive that chain. There are idlers on the bottom. Our machine can make all these round components.”
EMAG’s equipment differs from typical vertical lathe machining centers, whose head stock is mounted, typically horizontally, and a turret turns to do the machining. “Our turret is mounted in a concrete base, so it’s not moving,” Loetzner explains. “We have a head stock that moves outside of that design. That gives us better precision and better tool life.”
The machine builder takes pride in its ability to produce high-precision parts. In one example, Axle Alliance in Redford, Mich., needed to hold to a 25 µm tolerance for 390 mm diameter steel ring gears during hard turning, which is done prior to grinding the gear teeth. EMAG worked with Axle Alliance to develop a probing process that ultimately delivered a variation of less than 15 µm. Axle Alliance now uses six machines built at EMAG’s headquarters in Germany, each dedicated to a part line.
Another example comes from Precima Magnettechnik in Brückeburg, Germany, whose customers expect absolute perfection from, in this case, housings for brakes used mainly for wind turbines. Precima had had issues with machine vibration causing negative effects on tool life and surface finish. However, the rigidity of EMAG’s turning machines and the vibration damping quality of the base allows for the very high feed rates and cutting speeds required in precision hard-machining. Precima now runs four vertical pick-up turning machines from EMAG.
Loetzner gives much of the credit for the machines’ capabilities to long-time partner Siemens. EMAG has standardized on the Siemens Sinumerik 840D CNC platform, specifically the solution line and power line. Loetzner likes, in particular, that the CNC controller is an integral part of the PLC, and they are able to do almost everything through the CNC, including making it look like a PC for the operator. The common look and feel for the operators makes for easier onsite commissioning and cross-training, Loetzner adds.
In one recent case study, EMAG needed to provide grinding, turning and turn-grind machines to a major agricultural equipment builder, and the machine builder relied on the 840D CNC. “We needed to devise a control solution that would satisfy all the needs of the various machines we were supplying to this demanding customer, based on a common platform, to enable easier design, integration, startup, commissioning on-site and training for our customer’s operations and maintenance personnel,” Loetzner said at the time.
Similar control technologies are used on EMAG’s newer-technology machines, including laser welding and electrochemical machining centers. These technologies have little impact on the control or automation schemes, Loetzner notes, because they still are essentially performing the same task, whether in a dry, lubed, gas-cooled or underwater environment. Only the sensors and encoders need to change to accurately feed the relevant data to the control. In fact, the controls are often much simpler because the axes of motion are fewer, though more multi-axis and workpiece manipulating machines are being developed.
The CNC also enables remote monitoring over a wireless network so that process engineers can see what the operator sees on each machine. The agricultural equipment customer mentioned has used the remote monitoring capability on a wide variety of EMAG machines for several years, with all data communicated through a single information network that’s accessible by both EMAG and Siemens. Through this arrangement, they have been able to significantly reduce downtime, service calls and troubleshooting identification time.
More than 75% of the EMAG machines at this customer site are equipped with robotic devices. The lights-out capabilities this provide make remote monitoring that much more important. Remote monitoring can be done directly through the Sinumerik CNC in a one-on-one exchange with the customer, Loetzner notes, or even a three-way exchange involving Siemens as well.
While happy with the precision capabilities, EMAG’s focus on future development is trying to decrease the downtime between producing components. “On the automation and the part handling, the challenge is you want the machine to run and make parts all the time, right? But once a part is done, you have to take it out and put the other in,” Loetzner says. “Those non-productive times are the biggest enemies.”
EMAG reduces those times partly by use of the Japanese chaku chaku principle. Meaning “loading loading,” the idea is to bring various process steps as close together as possible to improve the speed between the processes. EMAG’s vertical machining centers not only fill a much smaller footprint on the plant floor, they also improve chip flow. Also, all of EMAG’s machines are self-loading, with a servo-controlled shuttle traveling through the machine, but not through the work envelope, Loetzner notes.
“While we have shown the industry we can master any part to highest precision, over the last five years we’ve been more and more focused on tightening non-productive time,” Loetzner says. At IMTS in Chicago in September, 2012, EMAG showed a new machine generation that significantly reduces the non-value add times. “Our chip-to-chip time was between 6 and 7 seconds for typical automotive gear,” Loetzner says. “Now it would be a second or less.”
For more information:
Kristal Kilgore
EMAG LLC
38800 Grand River Avenue
Farmington Hills, MI 48335
Tel: (248) 875-0313
Fax: (248) 477-7784
E-mail: kkilgore@emag.com
Web: www.emag.com
Check out Cutting Tool Engineering’s coverage of EMAG’s VL 2 P at IMTS 2012 HERE.
Contact for press and publishers:
EMAG LLC
38800 Grand River Avenue
Farmington Hills, MI 48335
Tel: (248) 875-0313
Fax: (248) 477-7784
E-mail: info@usa.emag.com
Web: www.emag.com
Attention: Peter Loetzner
Continue readingSkeppshult Gjuteri AB buys XL 2430 automatic matchplate molding machine from Hunter for cast iron cookware production
SCHAUMBURG, IL — Hunter, the first name in automated matchplate molding machines, sand and mold handling equipment, announced today the sale of an XL 2430 molding machine to Skeppshult Gjuteri AB, a cast iron foundry in Skeppshult, Sweden, world-famous for its cast iron, no-stick cookware. By adding organic rapeseed oil to the raw materials used here, this cast iron foundry pioneered non-stick cookware from its beginnings in 1906, under the direction of founder Carl Andersson. Today, the company’s cookware is found in high-end restaurants and homes worldwide.
The foundry, located on the Nissan River in southern Sweden, is the last remaining cast iron cookware production facility in Scandinavia. Skeppshult cookware and other household items carry a 25-year guarantee, owing to the quality of materials, production and craftsmanship provided by this manufacturer.
The Hunter XL 2430 is used at Skeppshult Gjuteri AB for the production of sand molds, the technology employed at this cast iron foundry.
This sale was made through the European office of Hunter in Milan, Italy and overseen by the director of European Operations for the company, Dr. Paolo Nazari. The local Hunter representative for this success was HYBE Maskin AB of Halmstad, Sweden.
ABOUT THE COMPANY
Hunter Foundry Machinery Corporation was founded in 1964 as Hunter Automated Machinery Corporation with the invention of the first gravity-filled automated matchplate molding machine. This development established the company’s history of innovation and launched the foundry industry into a new industrial revolution. Pioneered by William “Al” Hunter in his garage, the original HMP-10 machine streamlined the laborious metal casting process by offering foundries unimagined new production capabilities, producing as many molds in one hour as most had been able to produce in an entire day. As industry demands grew, Hunter responded with advanced solutions such as automated mold handling equipment and coresetters.
Now in its 50th year, Hunter Foundry Machinery Corporation’s inventions have earned nearly 150 patents around the world. With more than 1,800 molding machines and mold handling systems installed around the world, the Hunter sales and service reach extends from its manufacturing sites in North America, South America and China through its offices in the U.S., Europe, Brazil, India and Shanghai to every corner of the globe. Sales and technical support, as well as the company’s $12 million parts inventory, serve to maintain each machine’s original production capability, as well as Hunter’s preeminence in the world market.
FOR MORE INFORMATION, PLEASE CONTACT:
HUNTER AUTOMATED MACHINERY CORPORATION
2222 Hammond Drive Schaumburg, IL 60196
Phone: (847) 397-5110
Fax: (847) 397-8254
Email: info@hunterfoundry.com
Attention: Bill Hunter, CEO
Web: www.hunterfoundry.com
Connect with Hunter Foundry online: 
Impact-assisted flask filling addition to Hunter’s new HLM and successful XL product lines, JetSlinger helps increase mold production up to 300 percent.
SCHAUMBURG, IL — JetSlinger™, the newest add-on to industry innovator Hunter Foundry Machinery Corporation’s latest products, helps ensure improved pattern definition, as well as uniformity of mold hardness and surface integrity. The product, which shipped earlier this year, will be viewable at Cast Expo 2013 Booth #473. JetSlinger™ is an available option for the new Hunter HLM linear-motion machine, as well as a retrofit option for the company’s XL automated matchplate molding machines.
The JetSlinger™ is an air amplification apparatus based on the Venturi principle that accelerates sand into the cope and drag flasks on these Hunter machines. It creates a powerful vacuum and jet exhaust that draws sand mixtures through an array of nozzle assemblies built into a manifold mounted directly below Fillaerator blades, then slings them into a flask. It was invented by company president Bill Hunter. The JetSlinger™ design holds U.S. Patent Number US7819168B2, one of nearly 150 domestic and international patents granted to Hunter since its founding in 1964.
Key features and benefits of JetSlinger™ include:
“In contrast to the conventional blow fill machines, no shroud, seals or vented flask assemblies, nor is the usual attendant maintenance required,” according to company president Bill Hunter. “Furthermore, JetSlinger™ allows foundries far greater flexibility, as well as the access needed to produce various castings with the use of chaplets, ram-up cores and exothermic risers,” he adds.
With its perpendicular fill, this impact-assisted device produces molds more quickly and with substantially improved surface quality, owing to the powered pre-compaction of the sand. This action results in greater uniformity of mold density and wall hardness, without sacrificing the accessibility and flexibility of a gravity fill machine. Additionally, the JetSlinger™ achieves a flask filling operation that compensates for the types of mold quality limitations that are often caused by the flowability of the sand and pattern configuration during the high-pressure squeeze cycle. The basic operation of the JetSlingerTM is as follows:
1) Sand mixture is loaded into a hopper
2) Hopper gates open
3) Rotating Fillaerator blades aerate the mixture
4) Mixture is delivered into the Venturi action air acceleration manifold
5) Mixture under pressure dispersed (slung) through 20 nozzles into the flask
6) Flask fills with pre-compaction around pattern plate.
Click HERE to see the JetSlinger™ in action!
ABOUT THE COMPANY
Hunter Foundry Machinery Corporation was founded in 1964 as Hunter Automated Machinery Corporation with the invention of the first gravity-filled automated matchplate molding machine. This established the company’s history of innovation and launched the foundry industry into a new industrial revolution. Pioneered by William “Al” Hunter in his garage, the original HMP-10 machine streamlined the laborious metal casting process by offering foundries unimagined new production capabilities, producing as many molds in one hour as most had been able to produce in an entire day. As industry demands grew Hunter responded with advanced solutions such as automated mold handling equipment and coresetters.
Now in its 50th year, Hunter Foundry Machine Corporation’s inventions have earned nearly 150 patents around the world. With more than 1,800 molding machines and mold handling systems installed around the world, Hunter’s sales and service reach extends from its manufacturing sites in North America, South America and China through its offices in the U.S., Europe, Brazil, India and Shanghai to every corner of the globe. Sales and technical support, as well as the company’s $12 million parts inventory, serve to maintain each machine’s original production capability, as well as Hunter’s preeminence in the world market.
FOR MORE INFORMATION PLEASE CONTACT:
HUNTER FOUNDRY MACHINERY CORPORATION
2222 Hammond Drive – Schaumburg, Illinois 60196-1094 – USA
Phone: +1 847 397 5136
info@hunterfoundry.com
www.hunterfoundry.com
Attention: Bill Hunter, CEO