Machine element or mechanism – Mechanical movements – Reciprocating or oscillating to or from alternating rotary
Patent
1989-07-10
1990-09-11
Herrmann, Allan D.
Machine element or mechanism
Mechanical movements
Reciprocating or oscillating to or from alternating rotary
55270, 553852, 744248R, 74459, 981154, 384 15, 384913, F16H 2522, B01D 5330
Patent
active
049552449
ABSTRACT:
An operating apparatus includes a ball screw apparatus having a nut secured to a table which is fixed on sliders of a linear guide apparatus. The nut is engaged with a screw shaft and, when the screw shaft is rotated by a driving motor, the table having a member to be driven fixedly mounted thereon is moved together with the nut linearly and horizontally along the screw shaft. The ball screw apparatus and the linear guide apparatus is placed on a clean room, and a dust suction pump located outside the clean room sucks the dust produced in the clean room. Furthermore, a suction pipe of the dust suction pump is connected to a feed oil bore of the nut, which bore has been formed normally beforehand as a feed oil nipple. Thus, the dust produced in the inside of the nut is also sucked out by the dust suction pump. The suction pipe has a spiral portion near the nut. The spiral portion is supported horizontally by a supporting bar which penetrates through the spiral portion to allow the spiral portion to be expanded or compressed with the linear movement of the nut of the ball screw apparatus.
REFERENCES:
patent: 3820627 (1974-06-01), Wirt
patent: 4066825 (1978-01-01), Eberle
patent: 4530272 (1985-07-01), Stokes
patent: 4840077 (1989-06-01), Katahira
patent: 4859352 (1989-08-01), Waynick
Herrmann Allan D.
Nippon Seiko Kabushiki Kaisha
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