Automatic fret sawing machines

Details Automatic fret sawing machines Automatic fret sawing machines

1977-06-22

1978-09-26

Schran, Donald R.

Cutting

By tool reciprocable along elongated edge

With means permitting tool to be rotatably adjusted about...

83784, 83427, B27B 1902

Patent

active

041161017

ABSTRACT:
In an automatic sawing machine wherein a workpiece is moved in two orthogonal directions by a profile control or a numerical control so as to cut a groove of a predetermined profile, the opposite ends of the fret saw blade are synchronously driven by independent pulse motors so as to direct the fret saw blade always in the tangential direction of the profile.

REFERENCES:
patent: 156417 (1874-11-01), Fenner
patent: 229908 (1880-07-01), Numan
patent: 3548697 (1970-12-01), Gerber et al.
patent: 3908723 (1975-09-01), Hill

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