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Extrusion die and method for extrusion molding inside and outside reduction blank by same

A technology for extruding dies and billets, which is applied in the field of dies and extruded billets by using the dies, can solve the problems of large external shape diameter, long axial length, small bottom inner diameter, etc., to improve utilization rate, facilitate mold release, The effect of reducing the closing height

Active Publication Date: 2013-04-17
HARBIN JIANCHENG GRP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to provide an extrusion die and a method for extruding and forming an internally and externally variable-diameter billet by using the die, so as to solve the problem that the conventional billet extrusion forming die and method cannot form an external shape with a large diameter at one end and a small diameter at the other end; The inner hole is a problem of extrusion molding of a workpiece with a large inner diameter at the mouth, a small inner diameter at the bottom, and a long axial length.

Method used

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  • Extrusion die and method for extrusion molding inside and outside reduction blank by same
  • Extrusion die and method for extrusion molding inside and outside reduction blank by same
  • Extrusion die and method for extrusion molding inside and outside reduction blank by same

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specific Embodiment approach 1

[0015] Specific implementation mode 1: Combination Figure 1-Figure 4 with Figure 7 Explain that the extrusion die of this embodiment is composed of an upper die seat 10, a backing plate 11, a punch fixing plate 12, and a punch 14; the lower die includes a lower die seat 1, a first prestressing ring 5, and a first lower die 6. , The second prestressing ring 3, the second lower mold 4, the cushion block 8, the stripping plate 9, the stripping card plate 15, the pressure ring 19, the ejector plate 26, the ejector rod 27, three to four hanging mold rings 2 And a plurality of connecting components 16; the first prestressing ring 5 is sleeved on the first lower mold 6, and the two interference fits form the first component A, the second prestressing ring 3 is sleeved on the second lower mold 4, and The interference fit of the two forms the second component B. The second component B is installed on the lower mold base 1. Three to four lifting mold rings 2 are evenly distributed on th...

specific Embodiment approach 2

[0016] Specific implementation manner two: combination figure 1 with figure 2 Explain that the lower mold of this embodiment also includes a mold ring 24 and two mold ring handles 23; the mold ring 24 is set in the lower mold cavity, and the punch 14 passes through the mold ring 24 and is set in the lower mold cavity. The mold ring handle 23 is symmetrically arranged with respect to the center axis of the mold ring 24, and the two mold ring handles 23 are screwed to the upper end surface of the mold ring 24. The purpose of the die ring 24 is to make the upper and lower dies coaxial when the extrusion die is installed on the equipment, and it is removed after the extrusion die is installed, and the extrusion die is not used when it is working. Others are the same as the first embodiment.

specific Embodiment approach 3

[0017] Specific implementation mode three: combination figure 2 It is explained that the lower mold of this embodiment also includes two return card handles 25; the two return card handles 25 are set in one-to-one correspondence with the two ends of the U-shaped return card, and the return card handle 25 is The ends of the U-shaped return card are screwed together, which is convenient for the operator to take and place. Others are the same as the first or second embodiment.

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Abstract

The invention provides an extrusion die and a method for extrusion molding inside and outside reduction blank by the same, which relate to a die and a method for extrusion molding blanks by the die, and are aimed to solve the problems that the adoption of the common blank extrusion molding die and method cannot mold a workpiece with an external shape of one end of a larger diameter and the other end of a smaller diameter, and the workpiece with an internal hole end of a larger diameter, a bottom part of a smaller internal diameter and a long axial length. The die is characterized in that a second assembly is arranged on a lower die seat; a first assembly is arranged on a second assembly; the die holes of a first lower die and a second lower die are combined to form into a lower die cavity; a cushion block and a discharging plate are detachably connected with a first pre-stressed ring; a convex die is arranged in the lower die cavity; the connection part of the convex die is arranged in a stepped through hole of a fixing plate of the convex die; and the fixing plate of the convex die is detachably connected with the cushion block and an upper die seat. The method comprises the following steps of blanking, turning, heating, extruding and annealing treatments, wherein the heating temperature is between 1100 DEG C and 1150 DEG C. With the adoption of the extrusion die and the method provided by the invention, the extrusion molding of inside and outside reduction blanks can be realized.

Description

Technical field [0001] The invention relates to a mold and a method for extruding a blank by using the mold, and belongs to the technical field of forging and pressing of mechanically processed metal materials. Background technique [0002] Extrusion is a forging process with little or no cutting process. According to the relationship between the metal flow direction and the movement direction of the punch during extrusion, extrusion is divided into the following four types: forward extrusion, reverse extrusion, compound extrusion and radial extrusion. According to the metal temperature during extrusion, it can be divided into three types of extrusion: cold extrusion, warm extrusion and hot extrusion. [0003] The conventional blank extrusion forming method is to use the simple reciprocating movement of the forging equipment to make the metal pass through a hole with a certain shape and a certain size in the mold, and plastically deform to obtain the desired workpiece shape. The ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21C25/02B21C29/00
Inventor 刘忠柏许连辅安秀娟刘立成于晶
Owner HARBIN JIANCHENG GRP
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