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Machining Processes - Broaching or Rotary Broaching
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Broaching is a cutting process where progressively deeper cutting edges on a broach are pushed through the work piece in one operation. Broaching can be carried out by pushing a guided hand ‘broach’ into a work piece or by using a broaching machine.
Some common broaching applications include cutting of internal keyways, internal splines, cutting internal and external spur gear teeth and pinion racks.
Helical broaches can also be made to cut internal helical splines and lubrication slots. With internal helical broaching, the helix on the broach itself imparts a twisting action automatically and each set of cutting edges is progressively guided through the helical cut to remove more and more material until the final size is achieved.
Rotary broaching is an automated process used in conjunction with a CNC machine for volume production of internal splines, internal gears, internal helical splines, hex drives and other symmetrical internal details.
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