Stress sensor for yield-point detection in a stretch press

Details Stress sensor for yield-point detection in a stretch press Stress sensor for yield-point detection in a stretch press

1982-02-09

1985-02-26

Crane, Daniel C.

Metal deforming

By use of non-deforming work-gripping clamp and relatively...

By individually non-deforming clamps

72 31, 72 30, 72 37, 72296, 356373, B21C 5100

Patent

active

045011354

ABSTRACT:
A system for sensing tensile stress in a metal sheet being stretch formed between gripping jaws in a stretch press. Reaction force of the stressed sheet causes elastic deformation of each jaw, and this deformation is detected by movement of a light beam emitted from a source secured to the jaw. A photosensor output signal related to light-beam movement is correlated with a second signal representing sheet strain or elongation to detect when the sheet has been tensioned to the yield point.

REFERENCES:
patent: 2312755 (1943-03-01), Dehn
patent: 2945527 (1960-07-01), Bower et al.
patent: 3077800 (1963-02-01), Taylor
patent: 3082809 (1963-03-01), Petsch et al.
patent: 3775012 (1973-11-01), Ling et al.
patent: 4181430 (1980-01-01), Shirota et al.
Brochure entitled "Position Sensing Photodetectors" from United Detector Technology, Culver City, California.

Affiliated with

Also associated with

Rating

Stress sensor for yield-point detection in a stretch press does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Stress sensor for yield-point detection in a stretch press, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Stress sensor for yield-point detection in a stretch press will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-511413