Bi-axial scanning device for following the outline of a template

Details Bi-axial scanning device for following the outline of a template Bi-axial scanning device for following the outline of a template

1977-09-27

1979-06-19

Grimm, Siegfried H.

Radiant energy

Photocells; circuits and apparatus

Photocell controls its own optical systems

250206, 250215, 250224, G01D 530

Patent

active

041587685

ABSTRACT:
A bi-axial scanning device for guiding a template copier for machine tools comprises a shaft carrying a scanner with a pointer at one end and adapted to assume a zero position and follow the shape of a plane profile from the zero position. A flat disc spring supports the shaft at an intermediate point for resilient pivoting. An optical device comprises a source of a calibrated light beam and a photo-detector arranged to receive the beam. Either the calibrated light beam or the photo-detector is in a fixed position and the other is displaceable with the pivoting of the shaft in response to the pointer in contact with the template, the displacement being detected by the photo-detector and producing control signals emitted from the photo-detector. An amplifier is connected to the photo-detector to receive the control signals and an outlet transmits the amplified control signals to the machine tools.

REFERENCES:
patent: 3394248 (1968-07-01), Ogden
patent: 3404281 (1968-10-01), Fengler
patent: 3639766 (1972-02-01), Ogden et al.

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