Mitsubishi's Newest Mitsubishi Gear Shaper Eliminates Need for Helical Guides

Mitsubishi Machine Tools has developed a gear shaper that revolutionizes the cutting of helical gears. The new ST25CNC Gear Shaper combines a high speed, high precision spindle with a patented synchronized control to completely eliminate the need for helical guides.

A revolutionary mechanism allows helical gears to be cut by setting the helix angle on the CNC control. Changeovers are handled by reprogramming the CNC to cut each new configuration – which eliminates the need for a helical guide change – significantly decreasing set-up time to a few minutes.

Mitsubishi has designed a Windows-based user-friendly CNC control for the ST25CNC with a touch screen feature to facilitate customized programming and help eliminate lengthy programming time.

The ST25CNC also features high speed feed control for enhanced accuracy. By using a modified, inverse-transfer function data processing method, the NC data is read in advance of the servo amplifier to compensate for under- or over-torque at the same point in the next stroke.

In addition, the machine has a very large diameter spindle of 100mm for aggressive cutting, a spindle stroke of up to 1,000 strokes/min., a rapid traverse rate of 10,000 mm/min. and a maximum helical angle of ±45º.

Contributing to the ST25CNC's accuracy are its highly rigid and compact frame and built-in automatic thermal distortion compensation system – both important elements in gear production equipment.

For more information on the ST25CNC Gear Shaper and the complete line of Mitsubishi gear production machinery, contact Machine Tool Division of Mitsubishi Heavy Industries America, Inc., 1250 Greenbriar Drive, Suite B, Addison, IL 60101. phone: (630)693-4700; fax: (630693-4710.