Coordinate measuring system
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United States of America Patent
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-
Sep 15, 1992
Grant Date -
N/A
app pub date -
Jun 12, 1989
filing date -
Dec 10, 1986
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
The coordinate measuring system comprises a device (D) and host computer (19). The device (D) is formed of a base (1) rigidly attached to the article to be measured, an arm (2) rotatable relative to the base (1) only about axis (A), arm (3) rotatable relative to arm (2) only about axis (B), and arm (4) slidably relative to arm (3) along axis (C). The axes (A, B and C) are parallel. At the pivots (5) and (6) and sleeve (7) there are high precision bearings and rotary encoders. The approximate (3D) coordinates corresponding to the position of the measurement probe (10) can be calculated from the encoder derived measurements and are corrected by the computer for inaccuracies due to axes misalignment, flex of components etc. Correction terms are programmed after the assembly of the device (D).
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