Machine element or mechanism – Gearing – Interchangeably locked
Patent
1979-08-08
1982-07-20
Braun, Leslie
Machine element or mechanism
Gearing
Interchangeably locked
74411, 74568T, 200 35R, 200 38R, 200 38FA, 200 38BA, 200 38CA, F16H 5700
Patent
active
043399622
ABSTRACT:
A switching device for variable speed gears in machine tools having an assembly which includes a plurality of axially disposed, rotatably-driven cam discs, each of which is associated with an electric microswitch. Non-rotatable spacers serve to position the cam discs. A spherical key bed clamp axially clamps the cam discs together while permitting rotation of individual ones thereof. A non-rotating indicating disc displays the present RPM or respective gear stage. A shock absorber in the individual gear trains between switching bars and their respective electric motors provides sufficient damping and cushioning to prevent a hard start-up impact when the motor is switched on or when a sliding gear block is engaged. The shock absorber may include an elastic linkage or an elastic spur gear in a toothed wheel gear reduction unit located between the motor drive shaft and the link shaft.
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Braun Leslie
Gotts Lawrence J.
Maho Werkzeugmaschinenbau Babel & Co.
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