Outer-supporting expansion work piece clamping device used for spin forming of large rotating body section piece

Abstract

The invention relates to an outer-supporting expansion work piece clamping device used for spin forming of a large rotating body section piece. The clamping device comprises a main body of the clamping device, wherein the hydraulic cylinder on the main body is connected with a wedge through a tension rod, the slider on the wedge is matched with the guide rail for the wedge; the slider under a chuck plate is matched with the guide rail for the chuck plate; a positioning plate and a hydraulic rotating cylinder are arranged on a hollow main shaft; horizontal lead screws are installed on the nut seat of a bearing for the main shaft; the lower end surface of the nut seat is fixedly provided with a slider matched with the guide rail on the nut seat; one end of each of the horizontal lead screwsis connected with a synchronous belt pulley; the other end of one horizontal lead screw is connected with a hydraulic motor; the hydraulic cylinder drives the tension rod to push the wedge, and the wedge moves up and down along the guide rail for the wedge through the slider on the wedge; the chuck plate radially moves along the guide rail for the chuck plate through the slider under the chuck plate; the positioning plate positions height; the hydraulic rotating cylinder drives the hollow main shaft to rotate; and the hydraulic motor drives the horizontal lead screws to move synchronously, sothat the main body of the clamping device can move horizontally. The invention has the advantages of good self-locking function and high clamping efficiency and is convenient for operation.

Description

technical field [0001] The invention belongs to a workpiece clamping device in the field of spinning forming equipment manufacturing, and in particular relates to an external support expansion type workpiece clamping device for spinning and forming a large revolving body plate. Background technique [0002] The design of the clamping device of the workpiece in the spinning forming of large-scale rotary plate parts should first ensure sufficient clamping force to avoid vibration during the processing of the workpiece without damaging the positioning of the workpiece and causing excessive clamping deformation; in addition, it should It has sufficient clamping stroke to meet the requirements of large diameter; then it must have reliable self-locking, fast clamping action, convenient operation, safety and labor saving; finally, the structure should be as simple and compact as possible. The existing clamping devices suitable for plate parts of the revolving body are mainly elasti...

AI Technical Summary

Problems solved by technology

The existing clamping devices suitable for plate parts of the revolving body are mainly elastic sleeve clamping devices, wedge clamping devices, etc. The elastic sleeve clamping device uses the uniform elastic deformation of the elastic element after being stressed to realize automatic positioning of the workpiece. Center and clamping, the structure is simple, but the clamping stroke is small, not suitable for the clamping of large-diameter rotary plate parts; the wedge clamping device clamps the workpiece according to the principle of inclined plane clamping, which can increase the clamping force Or change the direction of the clamping force, but the clamping action is slow, the clamping efficiency is low, and there is a self-locking problem

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