Method and apparatus for producing a three-dimensional form from

Details Method and apparatus for producing a three-dimensional form from Method and apparatus for producing a three-dimensional form from

1977-09-19

1979-06-19

Weidenfeld, Gil

Gear cutting, milling, or planing

Milling

With regulation of operation by templet, card, or other...

409 86, B23Q 3300, B23Q 3500

Patent

active

041583256

ABSTRACT:
A method and apparatus for reproducing a three dimensional form from a photographic image of that form comprises, projecting in a parallel beam an image of a series of spaced parallel lines onto the object to be reproduced. The object with the superimposed lines is photographed obliquely, by way of reflection off a spherical mirror such that the lines appear as contour lines on the photograph. This photograph is subsequently projected onto a screen, again via reflection off a spherical mirror. The contour lines on the image on the screen are then traced in turn by a stylus or pen linked via a pantograph to a cutting tool which cuts out a corresponding contour from a block of material.

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