Centering controller for a tool electrode on an electrical machi

Details Centering controller for a tool electrode on an electrical machi Centering controller for a tool electrode on an electrical machi

1981-01-29

1983-08-16

Martin, Jr., William D.

Geometrical instruments

Area integrators

Electrical

33172D, 219 69E, G01B 731

Patent

active

043983502

ABSTRACT:
A positioning device for a tool electrode on an electrical machine tool, comprising: a tool head and a swivel electrode support for securely holding the tool electrode and adapted to be swivelably carried by the tool head whereby to allow the axis of the tool electrode to be swung relative to the tool head about a fulcrum lying on the axis of the latter. An electrode centering assembly is used to align the axis of the tool electrode with the axis of the tool head and comprises a plurality of axial drive units operative for displacement and pressurization along the respective radially equi-spaced axes, each unit comprising a pressure plate having a pressure surface extending in parallel with the axis of the tool head and slidably received in a casing and resiliently supported thereby to maintain the parallelism. Motors are used to conjointly advance the casings to displace the pressure plates towards and urge them against the tool electrode. The parallel surfaces of the pressure plates urged against the tool electrode thus rotate the latter about the fulcrum to bring it parallel with the pressure surfaces and hence into a precise axial alignment with the tool head. Support retainer means is coupled to the tool head and actuatable, after establishment of the axial alignment or parallelism, to fixedly secure the swivel electrode support to the tool head.

REFERENCES:
patent: 2826822 (1958-03-01), Noviant
patent: 3206857 (1965-09-01), Kaye
patent: 4301350 (1981-11-01), Fujikawa

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