Antilash driving apparatus for rotating a spindle or a work piec

Details Antilash driving apparatus for rotating a spindle or a work piec Antilash driving apparatus for rotating a spindle or a work piec

1994-09-06

1996-02-20

Bonck, Rodney H.

Machine element or mechanism

Gearing

Backlash take-up

74440, 219 6915, F16H 5712, B23H 726

Patent

active

054920299

ABSTRACT:
The driving apparatus for the spindle of an electro erosive machining apparatus comprises an electric motor adapted to be operated to rotate in two opposite directions and a reduction gear box assembly operatively coupled to the electric motor. The gear assembly is provided with a pinion and two gear wheels which are rotatable with reference to each other. Both gear wheels mesh with the pinion. One of the gear wheels is under the influence of a torsional biasing force. A first of the gear wheels is torsionally fixedly connected to the spindle of the electro erosive machining apparatus, while the second gear wheel is rotatable with reference to the spindle. Such a driving apparatus operates with low expenditure without backlash in both senses of rotation whereby an eventually occurring wear is automatically compensated.

REFERENCES:
patent: 2310232 (1943-02-01), Hale
patent: 2343110 (1944-02-01), Hale
patent: 3365973 (1968-01-01), Henden
patent: 3648534 (1972-03-01), Fagarazzi
patent: 4423302 (1983-12-01), Shimizu
patent: 4471197 (1984-09-01), Inoue
patent: 4739670 (1988-04-01), Tomita et al.
patent: 4747321 (1988-05-01), Hannel
patent: 4877935 (1989-10-01), Aso et al.
patent: 4990737 (1991-02-01), Obara
patent: 5269198 (1993-12-01), Fukushima

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