Apparatus and method for making rotary calibrations of a machine

Details Apparatus and method for making rotary calibrations of a machine Apparatus and method for making rotary calibrations of a machine

1995-02-13

1996-04-16

Turner, Samuel A.

Optics: measuring and testing

By polarized light examination

With birefringent element

356345, G01B 902

Patent

active

055088066

ABSTRACT:
When combined with a conventional angular-measuring, dual-beam-laser interferometer system, the present invention is useful for making rotary calibrations of a CNC (Computer Numerically Controlled) machine tool having a rotary machine tool table and associated tool spindle. The invention includes a bracket connected to an industry standard rotary indexing calibrator having upper and lower disks which are rotatable with respect to one another and which are connected to one another via a Hirth coupling. A reflecting element of the interferometer system for measuring angular position is preferably rigidly mounted to the bracket which in turn is connected to and rotates with the upper disk of the indexing calibrator. The lower disk of the indexing calibrator is mounted to the rotary machine tool table.

REFERENCES:
patent: 5237390 (1993-08-01), Chaney
patent: 5341702 (1994-08-01), Chaney et al.
HP Application Note 325-2 Machine Tool Calibration Using the HP 5528A Laser Measurement System 5952-7708, Jan. 1990.
A. G. Davis Rotary Calibrator Brochure Cat. No. RC-185-17, undated.
A. G. Davis Circle Divider Technical Catalog Supplement on Absolute Rigidity Catalog CD-2, Sep. 1989.
HP Product Brochure on HP5529A Dynamic Calibrator 5091-4369E, Aug. 1992.
Excerpts from Laser and Optics Users Manual, printed Jan. 1992, Manual Part No. 05517.varies.90033 from Hewlett-Packard Company.
Product Data Sheet from Carr Lane Manufacturing Co. on Stainless Spring Plungers, May 1985.
Product Data Sheet from Federal Products Co., A-384, 1992.

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