Indexing device

Details Indexing device Indexing device

B - Operations, Transporting

23

B

29/12, 90/34

B23B 29/32 (2006.01) B23Q 16/02 (2006.01) B23Q 16/06 (2006.01) F16H 27/04 (2006.01)

Patent

CA 1313786

ABSTRACT OF THE DISCLOSURE An indexing device comprises a rotatably driven input shaft; a globoidal cam having, for the purpose of outputting intermittently the rotation of the input shaft, a taper rib defining a cam face which has a disk-shaped end face gradually yielding to a helical face about the input shaft; an output shaft to which the rotation of the input shaft is transmitted so that the output shaft may rotate intermittently; an indexing disk provided on the output shaft and having supports protruding radially outwardly at intervals along the circumference of the indexing disk, the ridge of the taper rib fitting between the adjoining supports; cam followers each disposed at the end of the support on the indexing disk and brought into engagement with the taper rib so as to be intermittently driven along the cam face; and gaps provided between the ridge of the taper rib and the supports opposite this, the gap being filled up by the elastic deformation of the cam follower so that the ridge of the taper rib may come into contact with the support. Thus, even though an excessive load is applied to the input shaft, etc., the generation of permanent deformation such as an imprint can be prevented, which will result in improvements in rigidity and durability of the indexing device, therefore improvement in reliability of the indexing device for a machine tool to which the indexing device of the present invention is applied.

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