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 using the dies, which can solve the problems of large external shape diameter, large mouth internal diameter, and long axial length, so as to improve utilization rate and reduce closing height , Ease of mold release

Active Publication Date: 2012-03-14
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 one: combine Figure 1-Figure 4 and Figure 7 Explain that the extrusion die of this embodiment is composed of an upper die base 10, a backing plate 11, a punch fixing plate 12 and a punch 14; , the second prestressing ring 3, the second lower mold 4, the spacer 8, the stripping plate 9, the stripping clamping plate 15, the pressure ring 19, the ejector tray 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 set on the first lower mold 6, and the interference fit of the two constitutes the first component A, and the second prestressing ring 3 is set on the second lower mold 4, and The interference fit between the two forms the second component B, the second component B is installed on the lower mold base 1, and three to four hanging mold rings 2 are evenly distributed on the outer wall of the lower mold base 1, and the first component A is set on the secon...

specific Embodiment approach 2

[0016] Specific implementation mode two: combination figure 1 and figure 2 Illustrate, the lower mold of the present embodiment also comprises mold counter ring 24 and two mold counter ring handles 23; The counter-die ring handle 23 is arranged symmetrically with respect to the central axis of the counter-die ring 24 , and the two counter-die ring handles 23 are threadedly connected to the upper end surface of the counter-die 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 to take it off after the extrusion die is installed, and not to use it when the extrusion die is working. Others are the same as in the first embodiment.

specific Embodiment approach 3

[0017] Specific implementation mode three: combination figure 2 Illustrate, the lower mold of the present embodiment also includes two material return pallet handles 25; The end of the U-shaped return pallet is threaded, which is convenient for the operator to take and place. Others are the same as in 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 billet by using the mold, and belongs to the technical field of mechanically processing metal material forging and pressing. Background technique [0002] Extrusion is a less or no cutting process for forging. According to the relationship between the metal flow direction and the punch movement direction during extrusion, extrusion is divided into the following four types: forward extrusion, reverse extrusion, compound extrusion and radial extrusion. According to the temperature of the metal during extrusion, it can be divided into three types of extrusion: cold extrusion, warm extrusion and hot extrusion. [0003] The conventional billet extrusion forming method is to use the simple reciprocating motion of the forging equipment to make the metal pass through the hole with a certain shape and size in the mold, and undergo plastic deformation to obtain the required shape of the workpiece. Be...

Claims

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Application Information

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Patent Type & Authority Applications(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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