Spindle probe with orbital transformer

Details Spindle probe with orbital transformer Spindle probe with orbital transformer

1980-11-10

1982-06-22

Haroian, Harry N.

Geometrical instruments

Area integrators

Electrical

G01B 702

Patent

active

RE0309753

ABSTRACT:
A probe is mounted on the nose of a toolholder which fits into the spindle of a numerically controlled machine tool. An oscillator is mounted within the toolholder and is powered by a battery within the toolholder. The output of the oscillator is coupled to a primary coil on the toolholder which is inductively coupled to a ringshaped secondary coil on the spindlehead of the machine tool. Switches within the toolholder are wired to the oscillator to cause it to shift frequency when the probe stylus makes contact with a workpiece when moving along any one of the X, Y or Z axes. The ringshaped secondary coil is coupled to the machine tool's NC circuits to indicate when the probe makes contact with the workpiece.

REFERENCES:
patent: 2457127 (1948-12-01), Chesus et al.
patent: 2867783 (1959-01-01), Childs
patent: 3149421 (1964-09-01), O'Brien
patent: 3164909 (1965-01-01), Rosenberg

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