Electrochemical machine apparatus with drill-depth and rate monitor
US4687563A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Apr 1, 1985 |
| Grant date | Aug 18, 1987 |
| Priority date | — |
| Expiry date | Apr 1, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T408/175
- WIPO fieldMachine tools
- WIPO sectorMechanical engineering
Abstract
A drilling rate and depth monitor is provided for determining the rate in which apertures are formed in a workpiece using an electro-chemical machining process. The drilling rate and depth monitor is particularly useful where the rate of aperture formation is extremely slow, i.e., less than one-thousandths of an inch per second. The drilling rate includes a position sensor coupled between a workholder and a movable member supporting a plurality of cathodic drilling tubes which yields a depth signal proportional to the distance between the drilling tubes and the surface of the workpiece. Differentiation means are responsive to the depth signal for producing a drilling rate signal and display means are provided for both the drilling rate and drilling depth.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.