Manufacture method of screws of different material

Abstract

The invention relates to a method for manufacturing screws of different materials, and the method comprises a preparation step, and engagement step, a stamping step and a forming step sequentially; wherein, the preparation step aims at forming a first engagement part and a second engagement part on a rod body and a rod end of different materials, and the first engagement part and the second engagement part are used for locating first. Then, stamping location of the stamping step together with the first location of the first engagement part and the second engagement part form a preliminary-linked compound blank. The manufacturing method has the advantages of that a welding process can be canceled, the difficulty of following processing caused by the hardening of the materials during the welding process is also avoided and cutting operation after the welding is removed. Finally, screws of different materials and having good quality and hard falling off are formed after screw tooth twisting and forming operation. The manufacturing method simplifies the manufacturing process of the screws and reduces the production cost.

Description

technical field [0001] The invention relates to a method for manufacturing screws, in particular to a method for manufacturing screws of different materials. Background technique [0002] refer to figure 1 As shown in Fig. 2, the conventional method 1 for manufacturing screws of different materials includes a material preparation step 11, a welding step 12, a cutting step 13, and a forming step 14, etc.; wherein, the material preparation step 11 is to differentiate and form two base materials of different materials It is a shaft 15 and a rod tail 16, and one end of the shaft 15 is formed into a screw head 151, and a welding end 152 opposite to the direction of the screw head 151 is formed; again, one end of the rod tail 16 is formed with a Engaging end 162 . [0003] Continuing with the above, when the aforementioned materials are prepared, the welding step 12 of joining the welding end 152 and the joint end 162 can be welded, so that the shaft 15 and the tail 16 are combi...

AI Technical Summary

Problems solved by technology

[0005] 1. As it is known that welding must be used, the welding process cannot control the artificial welding quality. In addition to affecting the welding quality of the shaft and tail, the shaft and tail after welding are prone to skewing, which affects the manufacturing quality. and yield

[0006] 2. Continuing from the above, after the shaft and the tail are welded to form a composite blank, the welded part of the shaft and the tail is prone to hardening of the material at the welding area due to the high temperature during welding, resulting in subsequent drilling. Difficulty in tail and thread forming

[0007] 3. It is known that residual material will be generated after welding process, so it is necessary to go through a cutting step to remove the residual material before proceeding to the forming step, so it is not only time-consuming but also increases the cost of expenditure

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