Machine element or mechanism – Rotary member or shaft indexing – e.g. – tool or work turret – Locking means
Patent
1981-09-24
1984-07-17
Dorner, Kenneth
Machine element or mechanism
Rotary member or shaft indexing, e.g., tool or work turret
Locking means
B23Q 1700
Patent
active
044598777
ABSTRACT:
A center column type rotary index machine comprises a rotary index table which is intermittently rotated in angular increments to position a jig mounted on the index table at predetermined processing stations. A vertically movable center column undergoes upward and downward movement relative to a fixed frame portion of the machine. In order to ensure precise positioning of the jig at the processing stations, a clamp rod is slidably mounted on the fixed frame portion and is provided at its lower end with a taper portion which coacts with a complementary-shaped taper portion on the index table to position the index table so that the jig is precisely positioned at one of the processing stations. A link lever is pivotally mounted on the frame portion of the machine and has one lever arm pivotally connected to the upper end of the clamp rod and another lever arm pivotally connected to a slidable member which is slidably mounted in a sleeve affixed to the center column so that upward movement of the center column from its lowermost position effects pivotal movement of the link lever to cause downward movement of the clamp rod thereby bringing the clamp rod taper portion into engagement with the index table taper portion. The slidable member is biased in the upper direction by a spring housed within the sleeve so that after initial upward movement of the center column to bring the two taper portions into engagement, further upward movement of the center column effects compression of the spring thereby exerting a downward clamping force on the clamp rod to maintain the two taper portions in snug engagement during the processing of the workpiece held on the jig while the same is in the predetermined processing state.
REFERENCES:
patent: 2086848 (1937-07-01), Bullard
patent: 3094885 (1963-06-01), Flannery et al.
patent: 3633442 (1972-01-01), Stoen
patent: 3786721 (1974-01-01), Reda
Adams Bruce L.
Burns Robert E.
Dorner Kenneth
Lobato Emmanuel J.
Raskob, Jr. Anthony W.
LandOfFree
Positioning apparatus for index table in center column type rota does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Positioning apparatus for index table in center column type rota, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Positioning apparatus for index table in center column type rota will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1485708