Apparatus for compensating for electrode wear in an electrical discharge machine
US4039779A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Dec 11, 1975 |
| Grant date | Aug 2, 1977 |
| Priority date | — |
| Expiry date | Dec 11, 1995 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H7/18
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Electrical discharge machining apparatus having means to sense the position of the electrode at the start of EDM machining of a workpiece. The apparatus includes means to measure the forward movement of the electrode during each machining cycle and regulate the backward retracting movement of the electrode to a preselected distance so as to compensate for erosion of the electrode during the machining cycle to thereby facilitate positioning of the electrode in the correct location for the next machining cycle. The apparatus includes a sensing device operable to transmit electrical pulses corresponding to incremental movements of the electrode and control circuitry which receives the pulses and controls subsequent movement of the electrode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.