Index mechanism

Details Index mechanism Index mechanism

1976-02-23

1977-04-05

Herrmann, Allan D.

Machine element or mechanism

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

Locking means

74826, B23B 2932

Patent

active

040154874

ABSTRACT:
A unique index mechanism for positioning an indexable machine tool member wherein a first toothed coupling is fixed to a machine tool base member, and a second relatively movable, toothed coupling having a uniformly spaced number of teeth unequal to the first uniformly spaced coupling teeth is located concentric to the first coupling on the machine tool base. The indexable machine tool member is carried by the second movable coupling, and a third toothed coupling with teeth disposed toward the first and second couplings is rotatably mounted to the machine tool in such fashion that the third coupling may be powered into and out of meshing engagement with the first and second couplings.
The second coupling which carries the indexable machine tool member may be indexed to discrete angular increments corresponding to the angular difference in the tooth spacing of the respective first and second couplings. Means are provided for indexing the second coupling and means are provided to drive the third coupling at a predetermined speed ratio relative to the second coupling so that the third coupling may be rotatably advanced to a correct angular position to reassume meshing engagement.

REFERENCES:
patent: 3618426 (1971-11-01), Fisher
patent: 3718055 (1973-02-01), Maier
patent: 3797333 (1974-03-01), Maier

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