Product category:
Materials processing and testing
News Release from: Leico UK | Subject: Cold forming
Edited by the Engineeringtalk Editorial
Team on 19 October 2000
Novel method creates integral hub
Ahlen-based German spinning machine specialist Leico has developed an innovative method of cold forming rotationally symmetrical transmission parts with an integral hub.
Ahlen-based German spinning machine specialist Leico has developed an innovative method of cold forming rotationally symmetrical transmission parts with an integral hub Mounted on a drive shaft, such components traditionally incorporated an expensive machined and welded or brazed hub
This article was originally published on Engineeringtalk on 3 Sep 2001 at 8.00am (UK)
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The alternative of deep drawing involved high tooling cost and could only be justified for very high volumes.
Machined forgings too could be ruled out for most applications on cost grounds.
Now, with the new patented Leico method, hubs are formed by a rotary up-setting technique to create a one-piece part in a cycle time calculated in seconds.
The disc blank, with integral hub can then be formed by established spinning techniques, typically to produce a belt drive pulley or drive hub for splined clutch plates as found in automatic gearboxes.
By combining the up-setting process with flow forming, a viscous damper shell or constant velocity transmission pulley can be produced whilst the same blank may be up-set a second time to produce still more complicated parts.
Finishing operations on formed hubs are minimal, usually being confined to end facing and bore broach sizing only.
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