Method for manufacturing suspension bridge tie rod

A manufacturing method and technology of suspension bridges, which are applied in the field of manufacturing suspension bridge tie rods, can solve the problems of large deformation, difficult extrusion deformation, and low forming efficiency of suspension bridge tie rods, and achieve the effects of quality assurance, high tooth shape accuracy, and high manufacturing capacity

Inactive Publication Date: 2011-02-09
SICHUAN TIANYUAN MECHANICAL ENG
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  • Abstract
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  • Claims
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Problems solved by technology

However, no matter which method is used, there is a problem: if the suspension bridge tie rod is extruded before quenching and tempering, the deformation of the manufactured suspension bridge tie rod is very large during quenching and tempering treatment, wh

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  • Method for manufacturing suspension bridge tie rod
  • Method for manufacturing suspension bridge tie rod
  • Method for manufacturing suspension bridge tie rod

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Embodiment Construction

[0020] Using the above scheme, the applicant processed the MJ80X4-4g6g pull rods made of 40Cr rolled round steel for Taizhou Bridge and Aizhai Bridge. The threaded part of the tie rod adopts coarse-tooth MJ thread, the nominal diameter is 80mm, the pitch is 4mm, and the thread tolerance zone is 4g in middle diameter and 6g in major diameter. And the total length of the tie rod is 2550mm, the lengths of the threaded parts at both ends are 100mm and 1650mm respectively, and the surface roughness of the threaded part is required to be above Ra3.2.

[0021] Such as figure 1 As shown, the manufacturing method of processing the MJ80X4-4g6g suspension bridge tie rod comprises the following technological process:

[0022] (1) Conduct flaw detection on the purchased Φ90 40Cr rolled round steel, and then unload after passing the test, rechecking and inspection.

[0023] (2) Install the billet obtained in (1) on a CS6150 machine tool, use a forming tool to roughly cut the 40Cr rolled ...

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Abstract

The invention provides a method for manufacturing a suspension bridge tie rod. The method comprises the following steps of: (1) arranging a blank on a machine tool and roughly cutting the tie rod by using a forming tool; (2) tempering and aligning; (3) roughly cutting tooth form of the tie rod by using the forming tool; and (4) finely extruding the tie rod tooth form to obtain the tie rod workpiece. The completely new method for manufacturing the suspension bridge tie rod of the invention has the advantages of high glossiness of the extrusion, high fineness of the tooth form and easiness of cutting of a material by threading, guarantees the quality and also improves the efficiency. The method is a preferred scheme for manufacturing the type of tie rods with diameter of more than phi 50 and long radius ratio of between 20 and 30; and the method grantees the quality, has high manufacturing capacity and high efficiency and is suitable for large-scale use and popularization.

Description

technical field [0001] The invention relates to a machining process method, in particular to a specific manufacturing method of a suspension bridge tie rod. Background technique [0002] Such as figure 2 As shown, the suspension bridge tie rod is a rod-shaped member installed on the suspension bridge to connect and adjust the length of the cable. Both ends have a threaded structure, which is used to connect the main cable and the anchor. It is the core force-bearing component of the suspension bridge. The diameter of the suspension bridge tie rod is generally φ60mm~φ120mm, the length is 2000mm~4000mm, and its aspect ratio is 30~50 times, and the national standard / aerospace triangular thread is generally used. How to make this kind of screw with high quality and high efficiency is an important embodiment of specialization. At present, there are generally two methods for making suspension bridge tie rods, namely, cutting forming method and extrusion forming method: [0003]...

Claims

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Application Information

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IPC IPC(8): B23P15/00
Inventor 赵鹏贤莫帮军刘昌华阮明友陈德伦曾顺琼
Owner SICHUAN TIANYUAN MECHANICAL ENG
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