Dual pinion anti-backlash carriage drive for a machine tool

Details Dual pinion anti-backlash carriage drive for a machine tool Dual pinion anti-backlash carriage drive for a machine tool

1986-10-14

1987-12-22

Bilinsky, Z. R.

Gear cutting, milling, or planing

Milling

Including means to infeed work to cutter

74409, 409174, B23Q 2300

Patent

active

047143886

ABSTRACT:
A carriage or slide of a machine tool is moved along a supporting guideway or way by a pair of driven pinions engaging a rack, and each pinion is mounted on the output shaft of a corresponding planetary gearbox. The input shafts of the gearboxes are driven by a reversible electric motor through an endless belt and pulley system. A pair of belt tension wheels engage the endless belt and are supported by a set of spring biased slide members which cooperate to establish a predetermined tension in the belt and a predetermined preload torque on the input and output shafts of the gearboxes to produce a corresponding anti-backlash force of the pinions against the rack.

REFERENCES:
patent: 1372979 (1921-03-01), Norris
patent: 2070807 (1937-07-01), Roehm et al.
patent: 2889755 (1959-10-01), Schroeder
patent: 2902875 (1959-05-01), Finally et al.

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