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ZI20A Internal Gear Grinder NIDEC

Nidec Machine Tool to Exhibit Two Gearmaking Machines at IMTS 2022, Booth 237036

Supply chain issues are driving more companies to bring manufacturing back in-house. Parallel to this trend in automotive manufacturing is the rise of electric vehicles and increasing automation. Nidec Machine Tool (Wixom, Michigan), responding to the needs of the industry, is debuting the new GE15HS gear hobbing machine at IMTS 2022 in Booth 237036. Emphasizing high speed, precision and efficiency, the new machine produces gears for electric and hybrid cars, as well as for robotic and automation applications.

GE15HS Gear Hobber NIDEC
GE15HS Gear Hobber NIDEC

The GE15HS model is designed for gears with a maximum diameter of 150mm, widely used in automobiles and motorcycles. The high-speed, high-torque direct-drive motor*1 for the main cutting spindle provides a maximum spindle speed of 6,000 min-1*2 – three times faster than previous models. The high efficiency spindle holding the workpiece uses a special table that provides high rigidity and high-speed rotation to handle the necessary thrust load*3 for high efficiency machining. Cutting gears with Nidec super-hard cutting tools yields a surface roughness of less than Ra0.4*4; on par with gear grinding. Scott Knoy, Nidec Machine Tool America VP of Sales says, “The GE15HS provides process efficiency, eliminating the finishing process of shaving prior to heat treatment, thereby improving productivity and reducing processing cost.” A larger machine, the GE25HS, is also available.

Used in combination with Nidec Machine Tool’s new materials and coatings for cutting tools, the GE15HS model provides stable mass production with a maximum cutting speed of 1,500m/min.

More than 2,800 Nidec GE Series hobbing machines have been delivered and installed since the product launch in 2004.

The Nidec booth will also feature the ZI20A-G Generating Internal Gear Grinder. Hard finishing of internal ring gears in mass production is the final frontier for automotive and truck transmission applications. For quiet, smoothly meshing internal ring gears, the ZI20A-G utilizes patented technology for threaded wheel grinding. This breakthrough process delivers fast and very cost-effective production of internal ring gears for planetary gearsets.

ZI20A Internal Gear Grinder NIDEC
ZI20A Internal Gear Grinder NIDEC

Notes

*1: Direct-drive mechanism motors utilize the torque coming from a motor without passing through a gear box or other mechanism in order to control driving loss due to friction and reduce wear on parts.

*2: The “min-1” notation is a unit expressing the number of turns in one minute, synonymous with “revolutions/rotations per minute” (rpm).

*3: Thrust load is the force applied to the shaft in a horizontal (parallel) direction (the axial direction of the rotor).

*4: In-house machining result with GE15S (Workpiece data: Module 1.6mm; No. of teeth 19; helix angle: 24°; face width: 24mm)

GE15HSGE25HS
Max. workpiece diameter150㎜250㎜
Max. cutting module4㎜6㎜
  Max. hob diameter90㎜130㎜
Max. hob length190㎜230㎜
Mount of hob shift150㎜180㎜
Max. spindle rotation speed6,000 min-1 Direct drive mechanism2,300 min-1
Main motor rated output24 kW25 kW

For more information, please contact:

Scott Knoy
Nidec Machine Tool America LLC
46992 Liberty Drive
Wixom, MI 49393
248-669-6136
www.nidec-machinetoolamerica.com

Demand for mass production of high-precision gears is continuing to rise with the shift to electrification of vehicles. With the need for improvements in NVH and fuel efficiency, plus the move toward low-cost manufacturing, Nidec Machine Tool, with its expertise in both gear machine tools and cutting tools, offers a full lineup of gear production machines. By delivering precision cutting tools and processing solutions to achieve high-precision, high-efficiency processing, Nidec Machine Tool provides comprehensive support for manufacturing in a wide variety of industries.