Numerically controlled feeding apparatus having feeding error co

Details Numerically controlled feeding apparatus having feeding error co Numerically controlled feeding apparatus having feeding error co

1991-01-29

1993-05-11

Ruggiero, Joseph

Boots, shoes, and leggings

318571, 318632, 36447431, G06F 1546, G05B 1918

Patent

active

052106977

ABSTRACT:
A numerically controlled feeding apparatus having at least two linear feeding devices having intersected feeding directions includes a memory for storing beforehand representative correction vectors for representative instruction values indicating a predetermined number of reference feeding positions in the feeding space, each representative correction vector having information on deviation amount and deviation direction between a reference feeding position indicated by each of the representative instruction values and a real feeding position corresponding to each of the representative instruction value, a correcting unit for calculating a correction vector for an instruction value indicating any desired feeding position on the basis of a correction vector group of representative correction vectors for representative instruction values indicating plural feeding positions located in the neighborhood of the desired feeding position, and the instruction value indicating the desired feeding position, thereby to obtain a corrected feeding amount, and a control unit for controlling a feeding operation of the linear feeding devices on the basis of the corrected feeding amount.

REFERENCES:
patent: 3555254 (1971-01-01), Gerber
patent: 4499546 (1985-02-01), Kuga et al.
patent: 4503373 (1985-03-01), Nozawa et al.
patent: 4879671 (1989-11-01), Rieder et al.
patent: 4942611 (1990-07-01), Kunugi et al.

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