Boots – shoes – and leggings
Patent
1985-07-25
1987-01-13
Smith, Jerry
Boots, shoes, and leggings
364170, 364560, 318572, G06F 1500
Patent
active
046369600
ABSTRACT:
The machine tool is a machining center having an angularly positionable tool spindle 16, a work table 11 movable relative to the spindle, and a surface-sensing probe 25 mountable on the spindle for measuring dimensions or positions on a work piece situated on the table. The probe senses a surface when the latter lies a small distance ("the probe offset") away from the spindle axis.
The method comprises providing on the workpiece a bore 24 defining opposite test surfaces -DX and +DX. The mid-point between the test surfaces has a known nominal position but an unknown actual position. The method further comprises operating the machine in a specified way to measure the test surfaces, the operation including rotating the spindle through 180.degree. between certain of the measuring operations. The measurements are then used for computing the probe offsets and the distance ("the work offset") between said nominal and actual positions.
REFERENCES:
patent: 4281385 (1981-07-01), Nakaso et al.
patent: 4382215 (1983-05-01), Barlow et al.
patent: 4428055 (1984-01-01), Kelley et al.
patent: 4485453 (1984-11-01), Taylor
MacDonald Allen
Renishaw Electrical Limited
Smith Jerry
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