Apparatus for electrical discharge machining of cylindrical work
US4230927A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Jun 30, 1978 |
| Grant date | Oct 28, 1980 |
| Priority date | — |
| Expiry date | Jun 30, 1998 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB23H1/02
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
Disclosed are a process and apparatus for electrical discharge machining of the outer surface of a satinizing roll to produce a satin-like roughened surface of a uniform roughness. This electrical discharge machining process produces a uniform satin-like roughened surface on the outer surface at each end of the roll, and for this purpose the process involves a step of decreasing the discharge current in proportion to decrease in the area which is to be worked by an electrode located at the roll end and thereby maintaining the flow of current per unit area at a constant value. The apparatus for performing the process comprises position detecting-means for detecting that the electrode has been moved to the roll end, and means responsive to the output signal of the position detecting means to control the off-time of current pulse which causes a discharge between the electrode and the roll.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.