Resilience-proof device for bending die

An anti-rebound and bending die technology, applied in metal processing equipment, forming tools, manufacturing tools, etc., can solve problems such as poor effect and reduce the amount of springback, and achieve the elimination of springback, reasonable design, and restraint of the tendency of springback. Effect

Inactive Publication Date: 2015-04-01
HEFEI LANGJIA MECHANICAL & ELECTRICAL EQUIPCO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, although the device used to prevent rebound in the prior art has a simple structure, the effect is poor, and the amount of rebound cannot be reduced to the greatest extent.

Method used

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  • Resilience-proof device for bending die

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Embodiment Construction

[0013] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0014] see figure 1 , figure 1 It is a structural schematic diagram of the present invention.

[0015] The anti-rebound device used on the bending die includes a punch body 1, a blank 2 for bending forming, and a die body 3, and the axes of the punch body 1 and the die body 3 are on the same line On a straight line, the tip of the punch body 1 is provided with a raised portion 10, and the top of the raised portion 10 is semicircular; by being provided with a raised portion 10 at the tip of the punch body 1, wedging The blank 2 is bent at the inner bend to change the stress state at this place an...

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PUM

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Abstract

The invention relates to a resilience-proof device for a bending die. The resilience-proof device for the bending die comprises a punch body, a blank to be bent and a cavity body. The axis of the punch body and the axis of the cavity body are in the same straight line. The tip of the punch body is provided with a protrusion portion with a semicircular top and both sides of the punch body are respectively provided with a chamfer. The lower end of the blank is in contact with a press plate, the lower portion of the press plate is connected to a spring, the top of the spring is connected to the press plate, and the bottom of the spring is connected to the bottom of a recess of the cavity body. The resilience-proof device for the bending die is reasonable in design; the tip of the punch is provided with the protrusion portion and is wedged into the inside bent portion of the blank during working for changing the stress state of the portion and restraining the back-moving trend of the portion unloaded after bending pressure; the press plate is arranged and connected to the spring at the lower end for preventing the blank from being unfitted to the punch body and the resilience during bending.

Description

technical field [0001] The invention relates to the field of molds, in particular to an anti-rebound device used on bending molds. Background technique [0002] The bending process is based on the needs of the shape of the part, through the mold and the press to bend the blank into a certain angle, and the stamping process method of a certain shape workpiece. It is widely used, such as many cover parts on cars, cabinet frame components of cars, Handles on the car, foot brackets, bracket components on the bicycle, handles, small ones such as door buckles, clips (iron clips), etc. [0003] However, due to the accompanying plastic deformation and elastic deformation during bending deformation, after the bending part is taken out of the bending die, its bending angle and fillet radius will be different from the corresponding shape of the mold. This difference in shape The phenomenon is called bending springback, and the size of springback is usually expressed by angle springbac...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21D37/10
CPCB21D37/10
Inventor 徐广亮
Owner HEFEI LANGJIA MECHANICAL & ELECTRICAL EQUIPCO
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