Cam grinding machine with workpiece speed control

Details Cam grinding machine with workpiece speed control Cam grinding machine with workpiece speed control

1977-06-08

1978-06-13

Godici, N. P.

Abrasive tool making process, material, or composition

With carbohydrate or reaction product thereof

51105EC, 511659, B24B 1700, B24B 542

Patent

active

040941051

ABSTRACT:
A cam grinding machine is provided wherein a wheel head is fed toward a rocking table carrying a work spindle so as to grind a cam roughly in a first step and finely in a second step successive thereto, and a speed-switchable motor is operated in such a way as to drive the work spindle and the rocking table at a fast speed in the first step and at a slow speed in the second step. The grinding machine is further provided with a motor control circuit which is arranged to switch the motor from the fast speed to the slow speed, with a delay of time that is required for the cam to rotate at least one revolution after the switching of the grinding step from the first step to the second one, so that an excessive infeed caused by the spring-back action of the cam can be reduced.

REFERENCES:
patent: 2786311 (1957-03-01), Hill
patent: 3683558 (1972-08-01), Oishi
patent: 3797176 (1974-03-01), Wespi

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