Machine element or mechanism – Gearing – Adjustable
Patent
1985-12-18
1987-09-15
Braun, Leslie
Machine element or mechanism
Gearing
Adjustable
74398, 74803, F16H 3506
Patent
active
046931309
ABSTRACT:
A gear train comprises a central wheel for rotation about a central axis and a plurality of pinions engaged with either inner or out circumferential teeth of the central wheel. The pinions are mounted on shafts and have teeth which are meshed with the teeth of the central wheel. A relative position of the pinion and central wheel teeth is influenced through external adjusting forces applied to the wheel and pinions. To this end, the pinions are mounted in active magnetic bearings whose magnetic force is controlled through sensors which sense the radial position of the central wheel. In this way, the radial position of the pinion shafts can be controlled using the magnetic bearings and as a function of the radial position of the circumference of the central wheel to maintain a desired spacing between the wheel and pinion teeth. This control can be used to compensate for centrifugal and thermal expansion or contraction forces.
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IEEE Spectrum (Sep. 1979); Practical Magnetic Bearings by Habermann & Liard, pp. 26-30.
Braun Leslie
Diehl Dwight G.
M.A.N.Maschinenfabrik Augsburg-Nurnberg AG
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