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Pulse current assisted hollow splitting micro-forming die and method for titanium alloy micro-gear

A technology of pulse current and titanium alloy, which is applied in the direction of metal extrusion die, etc., can solve the problems of difficulty in forming titanium alloy micro-gear or gear shaft structure, and low service life of the mold, so as to improve micro-forming performance, high forming efficiency, Effect of deformation resistance reduction

Inactive Publication Date: 2018-12-14
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problems of high difficulty in forming titanium alloy micro-gear or gear shaft structure and low service life of the mold, the invention further proposes a titanium alloy micro-gear pulse current assisted hollow shunt micro-forming mold and method

Method used

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  • Pulse current assisted hollow splitting micro-forming die and method for titanium alloy micro-gear
  • Pulse current assisted hollow splitting micro-forming die and method for titanium alloy micro-gear
  • Pulse current assisted hollow splitting micro-forming die and method for titanium alloy micro-gear

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specific Embodiment approach 1

[0020] Specific implementation mode one: combine Figure 1 to Figure 4 Describe this embodiment, the titanium alloy micro-gear pulse current assisted micro-forming mold in this embodiment includes a mold part and a power supply part, and the mold part includes a mold handle 2, a punch seat 3, an upper insulating plate 4, a guide assembly, a convex mold Mold bottom plate 6, punch 7, punch protective cover 8, punch holder 9, die 11, die bottom plate 12, die fixing plate 13, die gasket 14, ejector 15, lower insulating plate 16 , lower ejector rod 17, lower ejector rod sleeve 18 and die seat 19; the top of die handle 2 is fixedly installed on the bottom end of slide block 1 in the press, and the bottom end of die handle 2 is fixed to the top of punch seat 3 Connection, the punch holder body 9 is processed with a punch installation through hole, the punch protection sleeve 8 is set on the punch 7, the punch 7 and the punch protection sleeve 8 are installed on the punch installation...

specific Embodiment approach 2

[0023] Specific implementation mode two: combination figure 1 Describe this embodiment, the titanium alloy microgear pulse current assisted micro-forming mold in this embodiment, the power supply part includes a pulse power supply 23, two electrode joints 22 and two wires 24; one electrode joint 22 is installed on the punch clamping body 9, another electrode connector 22 is installed on the outer wall of the die fixing plate 13, and each electrode connector 22 is connected with the pulse power supply 23 by a wire 24. The pulse current passes through the wire 24, the electrode joint 22, the clamping body of the punch 9, the punch 7, the titanium alloy blank 21, the die 11, the die fixing plate 13, and the die bottom plate 12 to form a power circuit to provide a pulse current to heat the titanium alloy. The alloy blank 21 ensures the smooth progress of the micro-gear extrusion, and other methods are the same as in the first embodiment.

specific Embodiment approach 3

[0024] Specific implementation mode three: combination figure 1 Describe this embodiment, the titanium alloy micro-gear pulse current assisted micro-forming mold in this embodiment, the guide assembly includes four guide sleeves 5 and four guide posts 10, and the four guide sleeves 5 are fixedly installed on the punch seat 3, Four guide pillars 10 are installed on the die base 19, and each guide pillar 10 is slidably inserted on a guide sleeve 5 respectively, and other methods are the same as in the first embodiment.

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Abstract

The invention discloses a pulse current assisted hollow splitting micro-forming die and method for a titanium alloy micro-gear, relates to the pulse current assisted micro-forming die for the micro-gear and the hollow splitting micro-forming method, and solves the problems of high forming difficulty of the titanium alloy micro-gear or a gear shaft structure and short service life of the die. The die comprises a die part and a power part, the die part comprises a die handle, a male die seat, an upper insulating plate, a guide component, a male die baseplate, a male die, a male die protection sleeve, a male die clamping body, a female die, a female die baseplate, a female die fixing plate, a female die gasket, an ejector, a lower insulating plate, a lower ejection rod, a lower ejection rod sleeve and a female die seat, the method is implemented according to the following steps: step 1, installing the die; step 2, compressing a titanium alloy blank; step 3, heating and forming; and step 4, demolding. The pulse current assisted micro-forming die for the micro-gear and the hollow splitting micro-forming method belong to the technical field of machine manufacturing and plastic micro-forming.

Description

technical field [0001] The invention relates to a micro-gear structure forming die and a hollow split flow micro-forming method, in particular to a titanium alloy micro-gear structure pulse current assisted micro-forming die and a hollow split flow micro-forming method. The invention belongs to the technical field of mechanical manufacturing and plastic micro-forming. Background technique [0002] Titanium alloy microgear structure is the key and core component of various micro transmission mechanisms. It has the characteristics of light weight, high strength, good corrosion resistance, and excellent high and low temperature performance. It has broad application prospects in micro-drive mechanism. However, the thermal conductivity of titanium alloy material is low, the amount of springback after processing deformation is large, and the chemical activity of titanium alloy is high, so it is easy to react with the tool material to form the phenomena of welding, diffusion, stic...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C23/14B21C29/00B21C25/02
CPCB21C23/14B21C23/001B21C25/02B21C29/003
Inventor 徐杰郭斌单德彬包建兴汪鑫伟陈万吉王春举
Owner HARBIN INST OF TECH
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