Process for the control of the feed motion and touch-on motion o

Details Process for the control of the feed motion and touch-on motion o Process for the control of the feed motion and touch-on motion o

1988-08-24

1990-08-07

Pellinen, A. D.

Electric heating

Metal heating

Cutting or disintegrating

5116587, B23H 504

Patent

active

049470159

ABSTRACT:
The process serves to control the step-by-step feed motion or touch-on motion of a grinding wheel (18) relative to a workpiece (10) or a measuring sensor. In so doing, a sequence of measured values of the power consumption of the rotary drive motor (24) of the grinding wheel (18) is recorded. If a specific sequence of measured current values remains under a certain limiting value, a further touch-on step is triggered. With the touch-on control system the touch-on motion is terminated, when the measured current values attain a specific limiting value. This touch-on control system forms the second phase of a combined touch-on control process in whose first phase a sparking current is generated and measured between the grinding tool (18) and the workpiece (10), which serves as a measurement of the distance between these.

REFERENCES:
patent: 3811228 (1974-05-01), Nagashima et al.
patent: 4085554 (1978-04-01), Sugita
patent: 4484413 (1984-11-01), Yamamoto et al.
patent: 4641007 (1987-02-01), Lach
patent: 4662122 (1987-05-01), Ohmura et al.

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