Two axes NC system with tool offset

Details Two axes NC system with tool offset Two axes NC system with tool offset

1975-12-22

1978-01-24

Dobeck, B.

Electricity: motive power systems

Positional servo systems

Program- or pattern-controlled systems

364107, G05B 1924

Patent

active

040706087

ABSTRACT:
Tool offset compensation for a commanded path for a two axes NC system that produces movement by axis determination of sequential steps, is provided by having the tool offset the desired value, placing the tool center in the same quadrant as the direction of the commanded path and then making the tool center normal to the beginning of the commanded path. For a linear commanded path, the NC system then produces the commanded path while for an arcuate commanded path, the radius of the movement path produced is made to be the algebraic sum of the commanded path and tool center radii with additional incremental alterations without a corresponding movement being made in the numerical extent of the commanded path to utilize the same numerical extent for controlling the extent of the movement path.

REFERENCES:
patent: 3593091 (1971-07-01), Ross
patent: 3770947 (1973-11-01), Deily
patent: 3866027 (1975-02-01), Cutler
patent: 3939330 (1976-02-01), Fluet
Tschumi, J., "Tool Radius Correction for True Contour Programming," Brown Boveri Rev., vol. 57, pp. 456-459, 11/70.
Wortzman, D., "Cutter Compensation in Numerical Control," IBM Tech. Disclosure Bulletin, vol. 12, No. 1, p. 152, June 1969.

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