192 clutches and power-stop control – Stop mechanism – Limit stop
Patent
1991-03-28
1991-11-12
Herrmann, Allan D.
192 clutches and power-stop control
Stop mechanism
Limit stop
192143, 192149, F16D 7100
Patent
active
050640445
ABSTRACT:
An indexing apparatus for a rotary table has a support shaft rotatably supported by a base member in which indexed terminal positions of the rotary table is determined by abutment of a stopper member provided on the rotary table against positioning members provided on the base member. The indexing apparatus comprises a rack-pinion mechanism comprising a rack and a pinion fixed around the support shaft of the rotary table for rotating the same, a feed screw shaft rotatably supported by the base member and extending along the rack in a direction of the movement thereof, a breakable electric motor for driving the feed screw shaft, and a feed nut engaging the feed screw shaft. The rack and the feed nut are arranged so that either one of them has integral portions disposed at both sides of the other with spaces left on both the sides in the direction of the movement of the rack. Annular springs are disposed in each space. As the rotary indexing operation approaches the terminal position, the spring is elastically deformed in the direction of the movement of the rack so that shocks due to the abutting are prevented. Immediately before the indexed terminal positions, the speed of the motor is reduced and then the motor is braked.
REFERENCES:
patent: 2854113 (1958-09-01), Hallden
patent: 4552403 (1985-11-01), Yindra
patent: 4666026 (1987-05-01), Poulin
Ito Toshio
Mase Yoshiaki
Oketani Tetsuya
Herrmann Allan D.
Howa Machinery Ltd.
Whitelaw Nicholas
LandOfFree
Indexing apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Indexing apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Indexing apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1007945