Positrol offers the best selection in workholding. They have standard designs that have been developed over the past 50 years, along with an experienced engineering team. This allows Positrol to provide the right workholding for your application. Not just something that is on the shelf.
These Product Applications show the Positrol Workholding advantage along with the Company's committment to excellence.
Part: Round Part 35 MM OD, 30 MM ID with a small flange.
Operation: Turn ID and face and hold the ID to 30.000 mm
Tolerances: ID size tolerance .021 mm, TIR runout of the flange over the OD of .05mm
Production Requirements: 13,000/Month
Part Issues: Part was slightly out ouf round before machining
Tried: Original method was to use a 3 Jaw chuck with pie jaws. Second attempt to use a quick change style collet chuck.
Part: Internal sprocket with three flanges.
Operation: Machine flanges.
Tolerances: .170mm runout between the flange faces and the ID.
Production Requirements: 15,000/Month
Part Issues: .001mm of misloading (from machine automation) results in .0025mm of runout.
Tried: Original method was to use a 3 Jaw chuck, relying on machine automation to load the part square against the workstop.
Recommendation: Switch to Positrol Drawdown Chuck that centers and pulls back to ...