Stepping drive mechanism

Details Stepping drive mechanism Stepping drive mechanism

1981-09-10

1984-05-15

Staab, Lawrence J.

Machine element or mechanism

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

Preselected indexed position

74426, 74 84R, 74393, 74813R, 74813C, F16H 2704, F16H 116, F16H 120, B23B 2924

Patent

active

044480938

ABSTRACT:
Stepping drive mechanism for converting a constant input rotatory movement to a linear movement of a given length accelerated first from zero, then continuing at constant velocity, and finally decelerated back to zero, in which the constant input rotatory movement introduced into the drive of the mechanism is transmitted to cylindrical driving cams having indexing grooves provided in their cylindrical circumferential surface, which are engaged by an indexing pin provided on a carrier component coupled with the drive of the mechanism. The indexing pin carrier component has the form of a circular disk mounted for rotation about its central axis, on each of whose opposite flat sides a driving cam is provided, one associated with the acceleration-deceleration phase and one with the constant-velocity linear movement phase. The cams each have an axis of rotation disposed at right angles to the central axis of the indexing pin carrier component, in whose indexing grooves an associated indexing pin engages.

REFERENCES:
patent: 2852960 (1958-09-01), Brems
patent: 3012454 (1961-12-01), Brodbeck
patent: 3048059 (1962-08-01), Cross
patent: 3059360 (1962-10-01), Krauskopf
patent: 3815289 (1974-06-01), Hoffman

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