Flexible shaft with helical square end

Details Flexible shaft with helical square end Flexible shaft with helical square end

F - Mech Eng,Light,Heat,Weapons

16

F

F16F 1/02 (2006.01) F16C 1/08 (2006.01) F16F 1/16 (2006.01) F16F 1/48 (2006.01)

Patent

CA 2324161

A flexible shaft having at least one end formed to have a helical square shape, wherein successive cross-sections have square shapes progressively rotated with respect to each other. The overall rotation from where the square cross-section begins to the adjacent end of the shaft is preferably in the range of to 20 degrees. The helical square end is preferably shaped by swaging utilizing helical square dies preferably made by electron discharge machining. When the helical square end of the flexible shaft is forced into a mating square opening of an end fitting, the helical square configuration of the shaft end causes it to be deformed and bind tightly in the fitting with an interference fit, thus reducing vibration and noise when the shaft is rotated. Instead of a helical square shape, the end of the flexible shaft may alternatively have another helical polygonal shape.

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