Shallow X-Y table positioning device having large travel capabil

Details Shallow X-Y table positioning device having large travel capabil Shallow X-Y table positioning device having large travel capabil

1985-07-01

1987-06-30

Watson, Robert C.

Work holders

Holder mounted for movement

With plural means for changing holder positions

B23Q 102

Patent

active

046764925

ABSTRACT:
A first frame is provided, having a pair of parallel pusher bars, the inside surfaces thereof pressing against outer surfaces of a unitary workpiece support block positioned within the frame, and a second frame has a pair of pusher bars having inside surfaces pushing against the remaining outer surfaces of the unitary support block. Stationary drive means cause the independent orthogonal motion of each frame to thereby position the unitary block fitted between the overlapping frames. In a second arrangement, the unitary support block or post means is replaced by first and second pairs of post members in contact with inside surfaces of the parallel pusher bars of the first frame and in contact with outside surfaces of the parallel pusher bars of the second frame, and third and fourth pairs of post members are similarly positioned with respect to the frames. As a result, a shallow X-Y positioning system is provided enabling the direct transfer of the workpiece load through the post members to the base plate, thereby eliminating cross axis influences producing positioning inaccuracies. The overlapping relationship between the frame members also enables the X-Y motions to be very large if desired, and the second arrangement provides a central placement area for tooling.

REFERENCES:
patent: 3563186 (1971-02-01), Piper et al.
patent: 4392642 (1983-07-01), Chitayat
patent: 4409860 (1983-10-01), Moriyama et al.
patent: 4505464 (1985-03-01), Chitayat

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