Electrochemical machine apparatus with drill-depth and rate moni

Details Electrochemical machine apparatus with drill-depth and rate moni Electrochemical machine apparatus with drill-depth and rate moni

1985-04-01

1987-08-18

Valentine, Donald R.

Chemistry: electrical and wave energy

Apparatus

Electrolytic

204225, 219 69G, 408 12, 408 13, B23H 914, B23H 732, B23B 3904, B23B 3906

Patent

active

046875638

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.

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