B - Operations – Transporting – 24 – B
Patent
B - Operations, Transporting
24
B
51/88
B24B 17/10 (2006.01) B24B 19/12 (2006.01) G05B 19/18 (2006.01)
Patent
CA 1192750
ABSTRACT OF THE DISCLOSURE A cylindrical grinder for effecting stock removal from a cam surface on a workpiece comprising means for supporting the workpiece for rotation about a predetermined axis, grinding assembly means including a grinding wheel, means for defining a selected velocity profile for each revolution of the workpiece, the velocity profile having a plurality of acceleration/deceleration segments each having first and second radiused end portions each terminating at one end tangential to the constant velocity direction, the defining means including pulse driven stepping motor means which will rotate the workpiece one complete revolution when issued a predetermined number of pulses, and pulse generating means for driving the stepping motor means including an oscillator for generating a continuous train of pulses at a fixed rate or frequency and divide by N means for defining which pulses of the pulse train will be successively issued to the stepping motor means, and means for commanding a selected N number for the divide by N means for each pulse of the predetermined number of pulses to be issued to the stepping motor means thereby defining the selected velocity profile having a plurality of acceleration/ deceleration segments each having first and second radiused end portions each terminating at one end tangential to the constant velocity direction whereby the time interval between each two successive pulses issued to the stepping motor means being driven along a velocity profile including a plurality of acceleration/deceleration segments will he discrete and predetermined.
411380
Harrel Jack D.
Price Ralph E.
Litton Industrial Products Inc.
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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