Title:
DEVICE FOR CONFIRMING THE TAP OPERATION IN THE RIGID TAPPING
Document Type and Number:
WIPO Patent Application WO/1990/001388
Kind Code:
A1
Abstract:
The female threading operation is carried out by driving a tap (14) using a built-in main shaft motor (12) which directly drives the tap (14) without using transmission mechanism and using another motor (22) moves the tap together with the main shaft motor (12) in the lengthwise direction (Z) of the tap. The two motors (12, 22) are controlled for their rotation in synchronism with each other, and a difference operation unit (32) always monitors the difference between an instructed speed of revolution sent from a synchronism control unit (36) to the built-in main shaft motor (12) and a practical speed of revolution of the built-in main shaft motor detected by a revolution detector (16). When the difference becomes greater than a predetermined value, a light-emitting diode (40) or the like produces an alarm. Therefore, the female threading operation is carried out at high speeds maintaining high threading precision, and percent defective is decreased.
Inventors:
NAKAMURA KOSEI (JP)
NUMAI KAZUHISA (JP)
NUMAI KAZUHISA (JP)
Application Number:
PCT/JP1989/000747
Publication Date:
February 22, 1990
Filing Date:
July 27, 1989
Export Citation:
Assignee:
FANUC LTD (JP)
International Classes:
B23G1/16; G05B19/18; G05B19/4062; (IPC1-7): B23G1/16
Foreign References:
| JPH05413080A | ||||
| JPS62188623A | 1987-08-18 | |||
| JPS63185519A | 1988-08-01 |
Other References:
See also references of EP 0394459A4
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