Electric heating – Metal heating – Work holders
Patent
1988-07-08
1989-09-19
Pellinen, A. D.
Electric heating
Metal heating
Work holders
219 60A, 228 29, 269268, 269287, B23K 923
Patent
active
048683671
ABSTRACT:
A clamping device for holding cylindrical workpieces having a nominal radius R which varies from a minimum of (R-A) to a maximum of (R+B), where A and B are the limits of the tolerance range for the nominal radius. The clamping device includes opposed clamp halves each having a clamp face adapted to be moved toward and away from one another and each of the clamp halves carrying a rigid collet element adapted to engage on opposite sides of cylindrical workpieces when the clamp halves are moved toward one another. According to the disclosure, each of the collet elements has a semi-cylindrical clamping surface extending inwardly from the clamp face of the respective clamp half. Each semi-cylindrical clamping surface has a radius substantially equal to R+B) with the center of the radius being offset outwardly of the clamp face of the respective clamp half an amount at least equal to (A+B). Preferably, the center of the radius is offset an amount at least equal to (A+B+C), where C is the tolerance deviation permitted to the radius (R+B).
REFERENCES:
patent: 2677746 (1954-05-01), Duch et al.
patent: 3668359 (1972-06-01), Emmerson
patent: 4379215 (1983-04-01), Rahrberg
Benway Ernest A.
Gardner Thomas J.
Cajon Company
Osborn David
Pellinen A. D.
LandOfFree
Rigid collet assembly for cylindrical workpieces does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Rigid collet assembly for cylindrical workpieces, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Rigid collet assembly for cylindrical workpieces will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-369882