Clamping apparatus for machine tools

Details Clamping apparatus for machine tools Clamping apparatus for machine tools

B - Operations, Transporting

25

B

269/6

B25B 5/00 (2006.01) B21D 28/04 (2006.01) B21D 43/10 (2006.01)

Patent

CA 1155464

ABSTRACT OF THE DISCLOSURE A clamping apparatus 3 holds a workpiece W between an upper punching tool 19 and a lower punching tool 21 in a metal punching machine 1. A frame 33 attaches the clamping apparatus 3 to the machine 1. The clamping apparatus 3 comprises an upper clamp 61 and a lower clamp 57, the latter pivotably cooperating with the upper clamp 61 in order to secure the workpiece W. The clamping apparatus 3 also comprises a plate member 51 and rods 49 and 75. These rods 49 and 75 are mounted in the frame 33 in a direction perpendicular to the workpiece W. The lower end of the rods 49 and 75 are attached to the lower clamp 57 and the upper end of the rods 49 and 75 are attached to the plate member 51. A spring 83 is arranged between the lower clamp 57 and the plate member 51 for the purpose of maintaining the lower clamp 57 and the plate member 51 in horizontal orientation when- ever the lower clamp 57 collides with the lower punching tool 21.

367007

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