Method of measuring rotary-table deviations

Details Method of measuring rotary-table deviations Method of measuring rotary-table deviations

1987-11-02

1989-04-11

Martin, Jr., William D.

Geometrical instruments

Gauge

Coordinate movable probe or machine

33 1N, 33 1S, G01B 703

Patent

active

048193399

ABSTRACT:
The four components of the deviations of a rotary table from an ideal axis of rotation can be obtained by a single measuring method wherein a test body (4) having a plurality of well-defined measurement points is placed on the rotary table (1) and the positions of said measuring points are then determined by means of a coordinate-measuring instrument (3), for each of various angular positions of the rotary table, there being thus a set of ascertained measurement-point coordinates for each of the angular positions of the rotary table. From the sets of measurement-point coordinates, the travel deviations f.sub.a, f.sub.r and f.sub.t of the axis of rotation, and the angle-position deviation p.sub.w are then determined by calculation.

REFERENCES:
patent: 4080741 (1978-03-01), Siddall et al.
patent: 4369581 (1983-01-01), Lenz
patent: 4695982 (1987-09-01), Preysman
"Test of the Three-Dimensional Uncertainty of Machine Tools . . . ", W. Knapp, Annals of the CIRP, vol. 32/1/1983, pp. 459-464.
"Einbindung von Drehkoordinaten in Koordinatenmessgerate", W. Lotze, et al., Feingeratetechnik 31 (9/1982), pp. 394-397.
"Prufkorper fur Koordinatenmessgerate, Werkzeugmaschinen . . . ", H. H. Schussler, Technisches Messen 51 (1/1984), pp. 83-95.
"Zweidimensionale Prufkorper zur Ermittlung der Messtechnischen Eigenschaften von Koordinatenmessgeraten", Kunzmann et al., Technische Universitat, Wien, Apr. 2-4, 1986, pp. 1-27.

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