Method of and apparatus for copy controlling coordinate measurin

Details Method of and apparatus for copy controlling coordinate measurin Method of and apparatus for copy controlling coordinate measurin

1990-08-23

1993-04-20

Smith, Jerry

Boots, shoes, and leggings

36447437, 33503, G06F 1546

Patent

active

052048241

ABSTRACT:
For copy measuring the coordinates of an object to be measured using a coordinate measuring probe by disposing a rotary table on a platen of a coordinate measuring machine and placing the object on said rotary table and further rotating the object through said rotary table, there are calculated a speed vector V of the probe when the rotary table is stationary at the rotational angle .theta. and an angular velocity .omega. of the rotary table by said probe speed vector V viewed from the axis center of the object, and lead and retardation of said rotational angle .theta. is adjusted so as to keep unchanged an angular relationship between the object and the probe to determine the angular velocity .omega. anew. Further, there is calculated a speed vector V.sub.R that follows up the movement of said angular velocity .omega., and the vector sum V.sub.T =V+V.sub.R is issued as a speed command to the probe and said angular velocity .omega. is issued as a speed command to the rotary table. Therefore, one axis copy control owing to the rotary table is incorporated in addition to three-axis copy control of the probe when the rotary table is not used, to perform simultaneous four-axis copy control keeping unchanged the angular relationship between the object and the probe.

REFERENCES:
patent: 4342091 (1982-07-01), Whitehouse et al.
patent: 4428055 (1984-01-01), Kelley et al.
patent: 4549271 (1985-10-01), Nozawa et al.
patent: 4583159 (1986-04-01), Kanemoto et al.
patent: 4807153 (1987-02-01), Lane et al.
patent: 4819339 (1989-04-01), Kunzmann et al.
patent: 4958438 (1990-09-01), Hemmegarn

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