Apparatus for cycloidal acceleration and deceleration with parti

Details Apparatus for cycloidal acceleration and deceleration with parti Apparatus for cycloidal acceleration and deceleration with parti

1979-06-11

1981-06-09

Feldbaum, Ronald

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Locking means

74821, B23B 1700

Patent

active

042717272

ABSTRACT:
A reversible rotary indexing mechanism capable of generating large indexing angles including those exceeding one revolution. A constant velocity rotary input is connected to a rotary output by an eccentric accelerating-decelerating drive means which, by reason of a shifting mechanism, is selectively disengageable with the output at a maximum velocity, zero acceleration condition, while at the same time a constant velocity drive from the input is connected to the output. Conversely, the constant velocity drive is disconnected at the same time that the accelerating-decelerating drive means is reconnected to accomplish deceleration. An output lock is also provided and actuators including composite cams can be utilized to accomplish the action of the shifting mechanism.
In addition, the mechanism can be used with higher harmonic components to increase the design flexibility with greater inherent dwell capabilities and significantly longer constant velocity ranges.

REFERENCES:
patent: 3745838 (1973-07-01), Brems
patent: 3789676 (1974-02-01), Brems
patent: 3857292 (1974-12-01), Brems
patent: 4018090 (1977-04-01), Brems
patent: 4075911 (1978-02-01), Brems
patent: 4089228 (1978-05-01), Obra
patent: 4137797 (1979-02-01), Brems

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