Apparatus for movement of an object

Details Apparatus for movement of an object Apparatus for movement of an object

1994-04-25

1996-02-20

Briggs, William

Gear cutting, milling, or planing

Milling

With regulation of operation by templet, card, or other...

318569, 36447435, B23C 900, B23Q 1512, G05B 1300

Patent

active

054924405

ABSTRACT:
The accuracy of an apparatus for the movement of an object is increased by means of compensating for geometric errors and load and temperature induced deformations. The effects of the errors and deformations are stored in regularly updated compensation tables or parameterisations from which the error values as a function of position are available. The appropriate error values are selected while the complete momentary state of the apparatus can be taken into account. The derived error values can be used to correct the measured position in a feedback loop or to modify the steering signals for driving means without use of a feedback loop.

REFERENCES:
patent: 3612840 (1971-10-01), Stobbe
patent: 4503372 (1985-03-01), Nozawa et al.
patent: 4538098 (1985-08-01), Matsui et al.
patent: 4885449 (1989-12-01), Suzuki et al.
patent: 4893663 (1990-01-01), Ely
patent: 5021941 (1991-06-01), Ford et al.
"Modelling the errors of multi axes machines: a general methodology" by J. A. Soons et al., published in Precision Engineering, vol. 14, No. 1, (1992).
"A General Methodology for Machine Tool Accuracy Enhancement by Error Compensation", by M. A. Donmez et al., published in Precision Engineering, vol. 8, No. 4 (1986), pp. 187-195.
Dissertation of F. Theuws, "Enhancement of Machine Tool Accuracy: Theory and Implementation" (1991), Eindhoven University of Technology.

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