Metal blanking and stretching combined die

Abstract

The invention discloses a metal blanking and stretching combined die. The metal blanking and stretching combined die comprises a lower die seat, wherein an opening groove is formed in the upper end of the lower die seat; an upright rod is arranged in the opening groove, and a lower punch is arranged at the upper end of the upright rod; lifting devices are symmetrically arranged at the bottom part of the opening groove; propping blocks are arranged at the upper ends of the lifting devices; supporting rods are symmetrically arranged at the upper end of a lower die block; an upper die block is arranged at the upper ends of the supporting rods; symmetric telescoping devices are arranged at one side, close to the lower die block, of the upper die block; a fixing plate is arranged at one end, far away from the upper die block, of each telescoping device; a spring is arranged at one side, close to the upper die block, of each fixing plate; a propping rod is inserted into the upper die block. The metal blanking and stretching combined die is simple in structure and convenient to use; the problem of inaccurate stamping and stretching in the common die processing process can be solved; in addition, the stamping and stretching are combined, so that the problem that a plurality of dies are used can be solved, and as a result, the production cost can be greatly decreased.

Description

technical field [0001] The invention relates to the technical field of blanking and stretching composite molds, in particular to a metal blanking and stretching composite mold. Background technique [0002] The mold is a tool that makes the blank into a workpiece with a specific shape and size under the action of external force. Widely used in blanking, die forging, cold heading, extrusion, powder metallurgy parts pressing, pressure casting, and compression molding or injection molding of engineering plastics, rubber, ceramics and other products. The mold has a specific contour or cavity shape, and the application of the contour shape with a cutting edge can separate the blank according to the contour line shape (punching). Applying the shape of the inner cavity can make the blank obtain the corresponding three-dimensional shape. The mold generally includes two parts, the movable mold and the fixed mold (or punch and die), which can be separated or combined. Take out the ...

AI Technical Summary

Problems solved by technology

The mold is a precision tool with a complex shape and bears the swelling force of the billet. It has high requirements for structural strength, stiffness, surface hardness, surface roughness and machining accuracy. The development level of mold production is one of the important symbols of the level of mechanical manufacturing. The blanking drawing die plays an irreplaceable role in the processing of flangeless one-time drawing parts. In the prior art, for the processing of such parts, in actual production operations, the generally arranged process is blanking first, and then Stretching, and the above two processes are generally produced in a single-process curtain. Corresponding to each process, a pair of molds are required, which leads to the need for many molds to carry out the processing of the parts, resulting in relatively low machining accuracy of the parts, and High production costs and low efficiency make it difficult to meet mass production requirements

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