Structure and operation method of U-shaped stamping and bending die for thick plate length and short assembly

Abstract

The invention discloses a thick plate long-short combined piece U-shaped punching and bending mold structure and an operation method. The mold structure comprises an upper mold module and a lower mold module; an upper mold baseplate, an upper mold fixed base module and an upper mold insert module of the upper mold module are connected with a lower mold baseplate of the lower mold module, a first upper mold guide plate, a second upper mold guide plate, a third upper mold guide plate, a fourth upper mold guide plate, a first lower mold guide plate, a second lower mold guide plate, a third lower mold guide plate, a fourth lower mold guide plate, a lower mold fixed base module, a lower mold insert module, a lower mold adjusting cushion plate, an ejector, a left guide block and a right guide block so as to mount the upper mold module and the lower mold module together to be combined into a set of bending molds. The mold structure is distinguished from a conventional U-shaped punching and bending mold, that is, the production of products with different material thicknesses by one procedure mold in punching is realized through the novel mold structure. The operation method is clear in thought, liable to master and reliable in application value.

Description

technical field [0001] The invention belongs to the field of metal stamping processing, and relates to a mold structure, in particular to a U-shaped stamping and bending mold structure and an operation method of a thick plate length and short assembly. Background technique [0002] As we all know, vehicle products need a large number of metal sheets in the manufacturing process. At present, in the metal stamping process, the thickness of the product material produced by the mold in one process is the same. For the heavy-duty U-shaped parts of the car, according to In order to check the strength of the whole vehicle, some models will add specific U-shaped reinforcements to specific positions of the U-shaped parts. However, in the prior art, general U-shaped parts and specific U-shaped reinforcing parts belong to completely different products. These products need to design molds corresponding to their respective product appearance dimensions, and calculate their respective for...

AI Technical Summary

Problems solved by technology

However, it is difficult to overcome the springback of general U-shaped parts and specific U-shaped reinforcements after bending, and the springback size of each product is different. When general U-shaped parts and specific U-shaped reinforcements are combined and assembled, often In the case that the combination of specific U-shaped reinforcements and general U-shaped parts does not match, repeated corrections by workers are required to achieve proper assembly

After corrected assembly, there is a large gap on one side of the local side wall of the general U-shaped piece and the specific U-shaped reinforcement. It meets the requirements of the drawings, and the strength does not meet the theoretical strength requirements. At the same time, there are inconsistencies in the manually corrected products, which is time-consuming and laborious, and the product quality cannot be guaranteed, and the assembly efficiency is also very low.

The current assembly process has many processes, poor quality, and high labor costs, which has become a long-term difficult problem in the manufacturing process.

Images