Lead screw threading assembly

Details Lead screw threading assembly Lead screw threading assembly

1981-05-26

1982-07-20

Bell, Paul A.

Woodworking

With use of control means energized in response to activator...

To control different operating assemblages

10 89F, 144205, 408127, B23G 126, B23G 504

Patent

active

043398367

ABSTRACT:
The present invention relates to a lead screw threading tool utilized to form external threads on the upper end of a cylindrical shroud of a shock absorber assembly of a vehicular suspension system. The tool includes an expandable collet which is inserted into one end of the shroud for maintaining a lead screw arbor in axial alignment with the interior opening of the shroud. The lead screw arbor is utilized for mounting a driver unit for longitudinal movement along the axis of the arbor. A thread forming die is fastened to the driver unit in such a manner so as to permit limited radial movement of the forming die relative to the axis of the arbor. The limited radial movement of the threading die permits the die to properly seat on the outer wall of the shroud in the event there is a variation in concentricity between the inner and outer walls of the cylindrical shroud.

REFERENCES:
patent: 1886942 (1932-11-01), Czembo
patent: 2269756 (1942-01-01), Cowie
patent: 2280013 (1942-04-01), Stultz
patent: 2767564 (1956-10-01), Green
patent: 2783485 (1957-03-01), Noland et al.
patent: 3875832 (1975-04-01), Mayfield
patent: 3999452 (1976-12-01), Larsen
patent: 4014622 (1977-03-01), Lotz
patent: 4114484 (1978-09-01), Feamster
patent: 4269421 (1981-05-01), Wawrzyniak

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