Development of Powdered Metal (PM) Pocket and Notch Plates for the Means Diode - MD One-Way Clutch

Paper #:
  • 1999-01-0890

Published:
  • 1999-03-01
Citation:
Ruth, S., "Development of Powdered Metal (PM) Pocket and Notch Plates for the Means Diode - MD One-Way Clutch," SAE Technical Paper 1999-01-0890, 1999, https://doi.org/10.4271/1999-01-0890.
Author(s):
Affiliated:
Pages:
9
Abstract:
The Means Industries one-way clutch is a planar ratcheting device offering technical advantages to the more conventional roller and sprag clutches which are widely used in today's automatic transmissions. The intricate shape of the notch and pocket plates would require costly milling and broaching if produced from wrought steel or a forging.These components are now being designed and manufactured with conventional powdered metal technology. Typical designs include materials such as FN-0205, FN-0208 and FN-0408. They are single pressed to a 7.0 g/cm3 density range, then sintered and heat treated to obtain the required strength and wear resistance. This paper discusses the basic design concept, design stress limits, PM material selection and processing for these one-way clutch plates.
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