Geometrical instruments – Gauge – Center – point – distance between centers – or centerline location
Patent
1990-06-25
1991-02-12
Will, Thomas B.
Geometrical instruments
Gauge
Center, point, distance between centers, or centerline location
33644, 33642, 408 75, G01D 2100, B23B 4900
Patent
active
049913069
ABSTRACT:
The center locator utilizes a probe mounted for limited universal movement by a ball and socket arrangement. The center locator is affixed to the machine tool spindle so that the center of the ball coincides with the axis of the machine tool spindle. One end of the probe, provided, for example, with a sharp point, is placed in registry with a punch mark or pilot hole. The other end of the probe cooperates with two orthogonally located sensors. Each sensor includes a plunger confined for rectilinear movement by a hollow calibration nut, the plunger of one sensor being movable in the X direction in a plane at right angles to the spindle axis, and the plunger of the other sensor being movable in the Y direction in said plane. Springs cause the plungers to maintain contact with the probe end to follow the probe end along the X and Y axes respectively. The ends of the plungers are flat and move inwardly and outwardly of correspondingly flat tactile ends of the calibration nuts as the probe tilts in its mounting. When the work contacting end of the probe is precisely in line with the spindle axis, the plungers are precisely flush with the flat ends of the calibration nuts. A flush or lack of flush relationship is readily sensed by touch. The work is moved in the X-Y plane until the flush relationship is verified.
REFERENCES:
patent: 990605 (1911-04-01), Stimson
patent: 1141396 (1915-06-01), Jubinville
patent: 1444080 (1923-02-01), Nyman
patent: 1524980 (1925-02-01), Krebs
patent: 2074990 (1937-03-01), Roberts
patent: 2645024 (1953-07-01), Pool, Jr.
patent: 2674045 (1954-04-01), Lakomski
patent: 2718706 (1955-09-01), Kuslisch
patent: 2779040 (1957-01-01), Scarff
patent: 2994131 (1961-08-01), Gaylord
patent: 3079694 (1963-03-01), Yemmans
Flam Fred
Will Thomas B.
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