Title:
METHOD AND APPARATUS FOR ELECTRICAL DISCHARGE MACHINING
Document Type and Number:
WIPO Patent Application WO/1994/003299
Kind Code:
A1
Abstract:
An electrical discharge machining in which the machining conditions are automatically updated in such a way that the discharging state matches the target values. Initial machining condition P1, a target electrical discharge state (normal discharge rate, for example) P2, and a constant P3 for calculating a new machining condition are determined. The initial machining conditions P1 are stored in a register D which stores execution machining conditions. The machining starts on the conditions thus stored (S3). The error (E) is obtained between the detection data P4 which represent the discharging state, and the target discharge state (S7). The new machining condition (A) is obtained by adding the product of the error (E) multiplied by the constant PC (= C) to the current machining condition (A) (S8). Thereafter, these steps are repeated and the machining condition is updated so that the discharging state matches the target discharge state. The target discharge state is obtained by the test machining.
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Inventors:
IZUMIYA SYUNZO (JP)
KAWAHARA AKIYOSHI (JP)
KAWAHARA AKIYOSHI (JP)
Application Number:
PCT/JP1993/001006
Publication Date:
February 17, 1994
Filing Date:
July 19, 1993
Export Citation:
Assignee:
FANUC LTD (JP)
IZUMIYA SYUNZO (JP)
KAWAHARA AKIYOSHI (JP)
IZUMIYA SYUNZO (JP)
KAWAHARA AKIYOSHI (JP)
International Classes:
B23H7/16; B23H1/02; B23H7/20; G05B19/4093; (IPC1-7): B23H1/02
Foreign References:
| JPH01281821A | 1989-11-13 | |||
| JPH06312727B | ||||
| JPS63318210A | 1988-12-27 | |||
| JPH01135421A | 1989-05-29 |
Other References:
See also references of EP 0606494A4
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