JPS6370833U - - Google Patents

Description

[Brief explanation of the drawing]

1 and 2 are cross-sectional views of a copying table of the present invention, and FIG. 3 is a cross-sectional view of a conventional copying table. 1...Work fixing means, 2...Positioning disc,
3... Small ball, 4... Reference disk, 5... Copying block, 6... Copying small ball, 7... Cage, 8... Washer, 9... Drive means, 10... Guide means, 1
1... Base, 12... Pressurized air supply means.

Claims (1)

[Scope of utility model registration request] A copying block in which the upper part of a sphere is cut horizontally and a flat part is formed on the upper surface, a large number of copying small balls arranged on the same circumference that contact and hold the lower spherical surface of this copying block, and this It is equipped with a hollow cylindrical retainer that positions the copying ball in the radial direction, a washer that positions it in the thrust direction, and a conduit that holds the retainer and washer in a fixed position and opens toward the lower spherical surface of the copying block. a base, a reference disc fixed on the copying block and having a plurality of inverted triangular pyramid-shaped holes arranged at equal intervals on the same circumference, and small balls fitted in each hole of this reference disc. , a ring-shaped positioning disc for fixing the small ball in a fixed position, a guide means for moving the positioning disc up and down at the fixed position, and a driving means fixed to the base for moving the positioning disc up and down. A pneumatic copying table comprising: a workpiece fixing means for fixing the workpiece onto the copying block; and a pressurized air supply means for applying pressurized air from a conduit in the base onto the lower spherical surface of the copying block.