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Pre-upset one-heating forming mold and pre-upset process

A technology of forming molds and firing times, which is applied in the direction of manufacturing tools, metal processing equipment, transportation and packaging, etc., can solve problems such as folding, and achieve the effects of reducing production costs, improving production efficiency, and reducing cooling speed

Inactive Publication Date: 2012-07-11
QINGTE GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the deficiencies of the existing technology, the technical problem to be solved by the present invention is to provide a method that can solve the problem of folding after forging in the prior art and at the same time do not need to increase the reheating furnace, greatly reducing the production cost and improving the production efficiency. Pre-upsetting one-shot molding die and pre-upsetting process

Method used

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  • Pre-upset one-heating forming mold and pre-upset process
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  • Pre-upset one-heating forming mold and pre-upset process

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Embodiment Construction

[0016] The present invention will be further described in detail below in conjunction with specific embodiments;

[0017] Such as figure 1 , 2 As shown, a pre-upsetting one-fire forming mold is composed of an upper mold flange 2, a lower mold flange 3, an upper mold plate 4, a lower mold plate 5, and a pressure rod 6 with an indenter 7. The upper mold flange 3 is fixed to the top of the upper mold plate 4 by screws 31, the upper mold plate 4 and the lower mold plate 5 are fixedly connected by the lower mold flange plate 3 provided at the bottom of the upper mold plate 4, and the pressure rod 6 is set in the stamping In the cavity 1; on the pressing surface 71 of the pressing head 7 is provided an inner recess 8 recessed to the inside of the pressing head 7, and the extension of the inner recess 8 along the pressing surface 71 is smaller than the diameter of the pressing surface. The shape of the inner concave portion is set to be arc, square or rectangular in longitudinal section...

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Abstract

The invention discloses a pre-upset forming mold and a production process using the mold to pre-upset a flange. The pre-upset forming mold is composed of an upper mold flange provided with a stamping inner cavity, a lower mold flange, an upper mold plate, a lower mold plate and a compression bar provided with a compression head. The upper mold flange is fixed at the top of the upper mold plate through a screw, the upper mold plate is fixedly connected with the lower mold plate through the lower mold flange disposed at the bottom of the upper mold plate, and the compression bar is arranged in the stamping inner cavity. A stamping acting surface of the compression head is provided with an inwardly recessed part being recessed towards the inside of the compression head. The head (the contact position of the mold and bar stock during work) of the compression bar of the pre-upset mold is changed by adopting an inwardly recessed arc, square or rectangular design scheme to reserve storage space for the bar stock so that the bar stock cannot be cold too quickly when bearing the pressure under the action of radian small clearance of the compression bar. The pre-upset forming mold only needs one heating, and does not need secondary heating, thereby improving production efficiency and lowering production cost.

Description

Technical field [0001] The invention relates to the field of forging die design, in particular to a pre-upsetting forming die and a production process using the die to pre-upsetting a flange. Background technique [0002] The automobile half-shaft pre-upsetting process is through the forging die, so that the bar heated to more than 1000 ℃ is extruded in the die. This deformation method is a local deformation, which avoids the waste of energy for the overall heating of the bar and reduces the amount of material If burned, and equipped with a swing-rolling machine to process the upsetting flange type semi-shaft, mass continuous production can be easily realized. However, the position of the hot metal bar in the mold is different, and the cooling rate is also different. Especially the bar in contact with the mold pressure rod cools very quickly, and it will fold deep or shallow when the flange is rolled. The subsequent processing brings great inconvenience. At present, most domest...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B21K1/28
Inventor 纪爱师纪建奕祝欣欣
Owner QINGTE GRP
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