Special-shaped deep-cavity hot-forging precision coupler knuckle die and processing method thereof

A deep cavity, hot forging technology, used in metal processing equipment, manufacturing tools, forging/pressing/hammer devices, etc., to improve production efficiency and overcome quality defects

Active Publication Date: 2013-09-11
MAANSHAN CITY ZHONGYE MACHINERY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The problem to be solved by the present invention is to provide a special-shaped deep cavity hot forging precision knuckle mold and its processing method, which replaces the original casting mold and casting process, overcomes the quality defects of the existing knuckle castings, thereby improving production efficiency and the overall performance of the processed knuckle

Method used

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  • Special-shaped deep-cavity hot-forging precision coupler knuckle die and processing method thereof
  • Special-shaped deep-cavity hot-forging precision coupler knuckle die and processing method thereof
  • Special-shaped deep-cavity hot-forging precision coupler knuckle die and processing method thereof

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Embodiment Construction

[0011] The special-shaped deep cavity hot forging precision knuckle mold of the present invention comprises an upper mold and a lower mold, the template 1 of the upper mold and the template 2 of the lower mold are both cuboids, the two are movably connected, and the cavity 6 of the upper and lower molds has the same shape and size , the shape of the cavity is the same as that of the knuckle, and the cavity is located in the middle of the template. Wherein, the die cavity 6 is formed by closing several sections of arcs and straight lines, forming the shape of the knuckle.

[0012] The material of the upper and lower molds is mold steel 5CrNiMo, the size of the upper template is 850mm×800mm×350mm, and the size of the lower template is 850mm×800mm×450mm. Grooves 7 are set on the contact surfaces of the upper and lower templates around the cavity, the grooves are 3 mm lower than the parting surface, and the length and width are 550 mm × 500 mm, which are used as unloading troughs ...

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Abstract

The invention discloses a special-shaped deep-cavity hot-forging precision coupler knuckle die comprising an upper die and a lower die. Templates of the upper die and the lower die are both cuboids and flexibly connected, cavities of the upper die and the lower die are in the same shape and size, the cavities and a coupler knuckle are of the same shape, and the cavities are positioned at the centers of the templates. Each cavity is formed by enclosing of a plurality of circular arc sections and linear sections so as to form the shape of the coupler knuckle. The invention further discloses a processing method of the die. The processing method includes the specific steps of (1) forging, (2) planer milling, (3) drilling, (4) numeric control milling, (5) heat treatment, (6) finish milling, (7) polishing to remove burrs and sharp corners, and (8) assembling, die assembly, debugging, packaging and acceptance inspection. The die substitutes for an original casting die and a casting process, quality defects of existing coupler knuckle castings are overcome, and accordingly production efficiency and overall performance of processed coupler knuckles are improved.

Description

technical field [0001] The invention belongs to a forging die, which is mainly used for forging and processing a knuckle used for railway trains. Background technique [0002] At present, most of the knuckle production is processed by casting molds, including lost foam, sand mold and so on. Many related researches have been focused on the optimization of casting process and so on. For example, in the eighth issue of "Casting" in 2011, there was an article "Casting Process Simulation and Optimization of Coupler Knuckle" [CLC number: TP391.9 TG24 Document code: B Document number: 1011-4977(2011)08- 0765-04], the article pointed out: "On the basis of the original process, ProCAST casting simulation software was used to numerically simulate the knuckle filling and solidification process for the No. On this basis, the original process has been improved and optimized.” This article comes from the “State Key Laboratory of Material Forming and Die Technology, Huazhong University o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21J13/02B23P15/24
Inventor 陶金顺陶水灵陶源竹
Owner MAANSHAN CITY ZHONGYE MACHINERY
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