Method and apparatus for numerical control of machine tools

Details Method and apparatus for numerical control of machine tools Method and apparatus for numerical control of machine tools

1985-10-24

1987-09-22

Smith, Jerry

Boots, shoes, and leggings

B23F 500, H02P 500

Patent

active

046959602

ABSTRACT:
In a hobbing machine for producing a gear from a workpiece, a device for controlling the rate of rotation of the workpiece in accordance with the motion of a cutting tool compensates for a lag in a feedback loop servo control and concomitantly in the rotation of the workpiece. The device calculates a correction quantity from the actual velocity of the tool and the loop gain of the feedback loop servo control and feeds the correction quantity thereto.

REFERENCES:
patent: 3987350 (1976-10-01), Pomella et al.
patent: 4053819 (1977-10-01), Matsumoto
patent: 4096770 (1978-06-01), Tanner
patent: 4253050 (1981-02-01), Angst
patent: 4329096 (1982-05-01), Herscovici

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