Metal working – Plural diverse manufacturing apparatus including means for... – Type of machine
Patent
1980-11-06
1982-10-26
Briggs, William R.
Metal working
Plural diverse manufacturing apparatus including means for...
Type of machine
409 84, 409 95, 409104, B23Q 3502
Patent
active
043554474
ABSTRACT:
An arrangement for removing excess material from an object surface, to provide a desired finished surface. Holes are drilled into the object so that the bottoms of the holes lie on the desired finished surface. The holes have a shape so that the observed hole diameter at the prevailing surface of the object is dependent on the hole depth and thereby dependent on the amount of material remaining to be removed between the prevailing surface and the desired finished surface. The prevailing surface is continuously observed and measured, and the depths of material to be removed in a sequence of steps is calculated dependent on the measurements of the prevailing surface and the coordinates of the desired finished surface. As a result of the calculations, the depth of material removed during each step is controlled, so that upon carrying out a sequence of such steps, the surface exposed on the object after the last step has been carried out, coincides with the desired finished surface. The accuracy of the material removal equipment may be substantially less than the accuracy of the finished surface. Grooves instead of circular holes are cut when the radius of curvature of both the prevailing and desired surfaces becomes sufficiently small, so as to provide sufficient definition of the desired surface. With the grooves, the observed parameter is groove width rather than hole diameter.
REFERENCES:
patent: 2785600 (1951-03-01), Walti
patent: 3195411 (1965-07-01), MacDonald
patent: 3472122 (1969-10-01), Vertin
DiMatteo Paul
Rademacher Paul
Segnini Robert
Briggs William R.
Fogiel Max
Solid Photography Inc.
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