Horizontal springback inhibition device applied to waveform piece forming process

Abstract

The invention relates to a horizontal springback inhibition device applied to the waveform piece forming process. The horizontal springback inhibition device applied to the waveform piece forming process comprises a springback inhibition auxiliary device, a rail conveying device, a core stamping device and an upper computer. After a conventional stamping process is finished, a horizontal springback inhibition step is added, a first power mechanism drives a screw rod to rotate, and the screw rod rotates to drive a sliding seat to slide, so that a first positioning pin is driven to draw close toa second positioning pin; under the control of the upper computer and a ranging module, the feeding amount is accurately controlled; the first positioning pin and the second positioning pin apply pressure on two assembling holes of a sub slice of a formed waveform piece so as to drive the two assembling holes on the waveform piece to get close; and a squeezing board module is matched for extruding the sub slice of the waveform piece for the second time, so that the aim of inhibiting the springback of the waveform piece is finally realized.

Description

Technical field [0001] The invention belongs to the field of automobile parts processing, and in particular relates to a device for restraining springback during the forming process of a wave plate for a driven disc of an automobile clutch. Background technique [0002] The wave plate is named because of the approximate sine wave on the edge of the arc. It is the key elastic component of the clutch driven plate assembly of the automobile. Its main feature is that the forming parts on both sides have a certain bending height, and the middle Assembling holes are punched on the parallel plane and can be connected between two dry friction plates of the driven disc assembly by rivets. Among them, the distance between the two parallel surfaces is called the forming height of the corrugated sheet. Its accuracy requirement is an important functional parameter index of the design. The quality of its bending and forming also directly affects the assembly thickness, size, and size of the cl...

AI Technical Summary

Problems solved by technology

However, corrugated sheet products are usually formed by cold stamping with 65Mn (the corresponding imported material is CK75). The ratio of yield strength to elastic modulus of this material is relatively large, the plastic forming performance is low, and it is easy to produce rebound in the bending forming process; and The existence of the springback problem will also affect the precision and surface quality of the corrugated sheet forming height, thus increasing the design difficulty of the corrugated sheet stamping die, as well as the number of mold trials and mold repairs; although in recent years, finite element software analysis technology can be used in To a certain extent, the development cycle of stamping dies for auto parts is shortened. However, in an environment involving too many actual parameters, replacement of raw material manufacturers, and equipment updates such as presses, the error range of parameters when finite element analysis technology assists in guiding stamping dies It has been repeated, so the design and correction of the corrugated sheet bending mold has always been regarded as a difficult point

[0003] At present, when most manufacturers are designing corrugated sheet stamping dies, due to the impact of resilience, for different types of corrugated sheets, the initial mold depth used in the test mold is generally 2-5 times the corresponding product forming height, and then according to the actual processing However, when determining the initial parameter values ​​in the early stage, in addition to experience, springback theoretical analysis and finite element simulation are also needed, which increases the burden on technicians

Images