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Metal plate drawing forming die and method capable of controlling blank holder force

A metal sheet and forming die technology, applied in forming tools, metal processing, metal processing equipment, etc., can solve problems such as poor plastic deformation ability, inability to complete metal sheet deep drawing experiments, and no heating system, and achieve accurate edge blanking. Strength, simple structure, cost reduction effect

Pending Publication Date: 2022-04-22
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Many metal sheets have poor plastic deformation ability at room temperature, and the existing drawing dies often do not have a heating system. Deep drawing experiment at high temperature

Method used

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  • Metal plate drawing forming die and method capable of controlling blank holder force
  • Metal plate drawing forming die and method capable of controlling blank holder force

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Embodiment Construction

[0027] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific implementation modes, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0028] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should...

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Abstract

The invention relates to a metal plate drawing forming die and method capable of controlling blank holder force, and belongs to the field of metal plate drawing forming. The metal plate drawing forming die comprises a female die support, a female die, a blank holder, a top plate, a male die and a threaded rod, and the threaded rod penetrates in from the side, away from a blank holder lining plate, of the female die support, penetrates through the blank holder lining plate and penetrates out from the side, away from the blank holder lining plate, of the top plate; a spring is arranged on the screw and located between the blank holder lining plate and the top plate, a nut is arranged at the end, away from the female die support, of the screw to adjust the relative position between the blank holder lining plate and the top plate, and a pressure sensor is arranged between the spring and the top plate. The blank holder force can be adjusted only by adjusting the tightness of the nut, the blank holder force can be fed back in real time in cooperation with the pressure sensor arranged between the spring and the top plate, the blank holder force can be adjusted more accurately, and the blank holder force adjusting device is simple in structure, does not need an additional power mechanism and is convenient to use. And the edge pressing function of the metal plate can be achieved only through a mechanical structure.

Description

technical field [0001] The invention belongs to the field of deep drawing and forming of metal plates, and relates to a die and method for deep drawing and forming of metal plates with controllable blank holder force. Background technique [0002] Metal sheets are currently widely used in all aspects of life, and deep-drawn products can be seen everywhere. In the hot-drawing process of metal sheets, there are many factors that interact with each other, such as temperature, blank holder force, deep-drawing speed, and die geometry. question. Among them, the blank holder force is an important process parameter that affects whether the deep drawing is smooth or not. If the blank holder force is too small, it is easy to wrinkle at the flange during the deep drawing deformation process. The fillet of the plate die is cracked. Effective control of the blank holder force can minimize the occurrence of fatal defects such as wrinkling and cracking during the hot drawing process, ther...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/16B21D22/22B21C51/00
CPCB21D37/10B21D37/16B21D22/22B21C51/00
Inventor 白生文韦丽萍张逸冰董志华张昂袁明高渝阳杨鸿蒋斌潘复生
Owner CHONGQING UNIV
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