Clamping device for cylindrical surface test piece

Abstract

The invention provides a clamping device for a cylindrical surface test piece, which comprises an upper clamp body 1, a lower clamp 2, a flange sleeve 3, a spring 4, an inner taper sleeve 5, a split jacket 6, a plurality of steel balls 7, a supporting sleeve 8 and clamping handles 9. The clamping device has the benefits that through helical motion, the clamping device is combined with a tapered wedge surface to form a dual-force increasing mechanism and uniformly clamps a clamped test piece radially through the split jacket, a group of annularly-distributed steel balls with the same diameter is arranged between the inner taper sleeve and the lower clamp body to form a thrust bearing so as to reduce the frictional resistance, a spring is arranged between the inner taper sleeve and the upper clamp body to ensure that the inner taper sleeve automatically moves downwards along with the lower clamp body to be separated from the split jacket when loosened and clamped, the clamping handles are integrated into the clamping device without the need of an additional tool, the operation is simple and labor-saving, the clamping force is uniform, and the structure is compact and reliable. The invention provides the reliable cylindrical surface clamping device which is not liable to damage the test piece.

Description

technical field [0001] The invention relates to a clamping device, in particular to a clamping device for a cylindrical test piece. Background technique [0002] In some inspection or test devices, it is necessary to clamp the workpiece or specimen on the cylindrical surface. The three-jaw chuck of the lathe is a typical device for clamping the cylindrical surface. Large, high clamping force and self-centering. However, due to the large size of the three-jaw chuck, it is necessary to rely on a special square-head voltaic wrench to clamp the three clamping points evenly around the circumference in turn, which may cause damage to the clamping surface, and is not suitable for Clamping devices in inspection and test equipment for finished products or test pieces. On the testing equipment of some mass production lines, it is necessary to quickly clamp and loosen the workpiece or test piece with a cylindrical surface without damaging the surface of the test piece. Centering, bu...

AI Technical Summary

Problems solved by technology

For example, on the motorcycle front wheel shock absorber assembly line, the shock absorber needs to be installed vertically on the test bench to carry out the vibration test to test the performance characteristics. The piston outer cylinder is a cylindrical surface that has been ground and chromed. The direct clamping method of the screw with a split jacket is simple in structure, but it needs to be clamped or loosened with a wrench tool, and the wrench must be turned several times to clamp and loosen, and the force on the clamping surface is not strong. uniform

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