Drive system for air bearing machines

Details Drive system for air bearing machines Drive system for air bearing machines

1985-11-01

1988-02-16

Reese, Randolph A.

Machine element or mechanism

Mechanical movements

Reciprocating or oscillating to or from alternating rotary

74209, F16H 2508

Patent

active

047247134

ABSTRACT:
An improved drive system for machines incorporating air bearings is disclosed. The drive system eliminates backlash, introduces no vibrations or noise into the moving structures, requires no lubrication and excells in being compact and simple. The drive system essentially includes a stationary bar mounted in one axis of motion of the machine, a wedge member mounted for drivingly engaging the bar on one side, a preloader mounted for operatively engaging the bar on the opposite side, and a pair of springs urging the preloader to urge the wedge member into driving engagement with the bar. The drive system is coupled to a positioning servo system, which provides control of the drive system's position and speed. Preferably, the wedge angle of the wedge member is from about 15.degree. to about 30.degree.. Preferably, both the bar and the wedge member are formed from a group of materials possessing at least about 65 Rockwell hardness.

REFERENCES:
patent: 3264814 (1966-08-01), Kuster et al.
patent: 4226128 (1980-10-01), Dellantonio
patent: 4378709 (1983-04-01), Chitayat
patent: 4411166 (1983-10-01), Marcovici
patent: 4487132 (1984-12-01), Fuchs et al.

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