Workpiece holder for a vertical broaching machine for broaching

Details Workpiece holder for a vertical broaching machine for broaching Workpiece holder for a vertical broaching machine for broaching

1978-02-21

1980-01-22

Bilinsky, Z. R.

Chucks or sockets

Angularly adjustable or indexing

74826, 269 64, 279 4, 279 52, 409278, B23B 3120, B23B 3136

Patent

active

041846915

ABSTRACT:
A workpiece holder for a vertical broaching machine for broading annular workpieces is particularly useful for simultaneous broaching of two ball-bearing races in the rings of homokinetic joints. A workpiece support, rotatable relative to a baseplate about a common axis and accepting the workpiece coaxially by means of a tightening device, is nonrotatably connected to a double-ended piston which can be subjected to the action of pressure-oil, the piston being guided rotatably and axially displaceably between two end positions in a cylinder. Complementary set of teeth are provided at one end of the piston and on a facing surface, nonrotatably connected to the baseplate, these teeth being in mesh when the piston is in the first end position, thus centering the piston and holding it in a nonrotational manner. A first pressure-oil connection terminates in the chamber delimited by the teeth, the piston being displaced axially to the other end position when the chamber is pressurized with pressure-oil, with the teeth being out of mesh when the piston is in the latter position. An additional chamber, connected to a second pressure-oil connection, is formed between the piston and the cylinder, the piston being displaced back to the first end position when this additional chamber is charged with pressure oil.

REFERENCES:
patent: 1677889 (1928-07-01), Gairing
patent: 3054333 (1962-09-01), Brainard et al.
patent: 3685845 (1972-08-01), Fisher et al.
patent: 3877323 (1975-04-01), Vetsch

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