Gear cutter

Details Gear cutter Gear cutter

1982-05-10

1987-05-05

Smith, Jerry

Boots, shoes, and leggings

364150, 364166, 364167, 318561, 318571, 408 3, 408 11, 409 15, G06F 1546

Patent

active

046637214

ABSTRACT:
A method and control system for gear cutting machines such as hobbing equipment, shaper cutters and bevel-cutting equipment for achieving greater accuracy, productivity, and gears of increased quality while eliminating error, tedious calculations, labor and product variation is provided by employing a control system and utilizing a method of gear cutting wherein optimum cutter efficiency is maintained by electronically monitoring and controlling cutter input power, cutter shift and workpiece feed or in an alternative embodiment by varying index drive and feed drive in response to inputs measured from the cutter or cutter motor to produce gears approaching the optimum theoretical calculated configuration. The computer and control system can be readily adapted to existing gear cutting machines by utilizing an alternative embodiment of the invention which adds an encoder to the main cutter motor and replaces existing mechanical linkages for feed and index with variable speed electric motors and encoders to provide computer controlled index and feed rates that may be varied substantially instantaneously with the cutting of each gear tooth to maintain a predetermined cutter program. The method of cutting gears and the control system provides for the production of more accurate gears by eliminating the use of cams in shaper cutters and the use of change gears in hobbing machines and by properly controlling hob shift to result in an increased hob cutter lift and provide higher production of optimally designed gears.

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