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Manufacture technology of ball connection point with coreless necking bulging pressing method

A technology of preparation process and stamping method, which is applied to the production of ball joints by the coreless shrinking and bulging stamping method, and in the field of ball joint preparation and preparation for combined ball joint railings, which can solve the problems of many processes, many consumables, and increased costs. problems, to achieve the effect of improving safety performance, simple preparation process and high yield

Active Publication Date: 2010-05-05
佛山市南海大和钢结构有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The preparation process has many steps, many consumables and low efficiency
[0006] The preparation process of welding two hemispheres into a ball joint is the simplest, but the welding of hemispheres requires no safety hazards. In order to reduce safety risks, the welding inspection process should be increased, thereby increasing the cost

Method used

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  • Manufacture technology of ball connection point with coreless necking bulging pressing method
  • Manufacture technology of ball connection point with coreless necking bulging pressing method
  • Manufacture technology of ball connection point with coreless necking bulging pressing method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A ball joint for a combined ball joint railing and its preparation process, the preparation process is as follows:

[0041] Tubular blank→shrinking→bulging→shaping→hole repairing→stress relief heat treatment→inspection→warehousing;

[0042] Concrete preparation process steps and parameters are as follows:

[0043] (1) Preparation of blank:

[0044] The blank used in this preparation process is a tubular blank, which can be a forged tubular blank, a tubular blank processed by turning, or a tubular blank cut from a seamless tube; the size of the blank: L=1.57D-d k

[0045] D ball joint outer diameter

[0046] d k reserved hole diameter;

[0047] (2) necking

[0048] In this preparation process, the necking process is placed before the bulging process, and the necking is performed on the mold. The necking is multiple necking, the first necking, the necking coefficient is controlled at 0.8-0.9, and the necking coefficient is controlled by adjusting the The closed hei...

Embodiment 2

[0066] A ball joint for a combined ball joint railing and its preparation process, the preparation process is as follows:

[0067] Tubular blank→shrinking→bulging→shaping→hole repairing→stress relief heat treatment→inspection→warehousing;

[0068] Concrete preparation process steps and parameters are as follows:

[0069] (1) Preparation of blank:

[0070] The blank used in this preparation process is a tubular blank, which can be a forged tubular blank, a tubular blank processed by turning, or a tubular blank cut from a seamless tube; the size of the blank: L=1.57D-d k

[0071] D ball joint outer diameter

[0072] d k reserved hole diameter;

[0073] (2) necking

[0074] In this preparation process, the necking process is placed before the bulging process, and the necking is performed on the mold. The necking is multiple necking, the first necking, the necking coefficient is controlled at 0.8-0.9, and the necking coefficient is controlled by adjusting the The closed hei...

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Abstract

The invention relates to a manufacture technology of a ball connection point with a coreless necking bulging pressing method. The ball connection point is suitable for a combined type ball connecting handrail for a security enclosure. The manufacture technology comprises the steps as follows: a tubular rough-necking-bulging-shaping-removing stress and hot treating-machine holes-detecting-warehousing. The technology has the advantages in that: the pressing process of necking, bulging and shaping the rough and forming the ball connection point does not adopt the method that separated movable convex dies, rubber, polyurethane or liquid, and the like, are taken as core ware to transfer the axial pressure of a press machine into the radial pressure to the bulging of a work piece, but adopting the method which comprises the steps of directly designing a special press die, generating the radial bulging under the axial pressure of the press machine with the self intensity of the work piece to form the ball connection point, and machining the holes remained by necking the south magnetic pole and the north magnetic pole into handrail pipe holes or cross-bar pipe holes or the zinc leakage for treating the hot dip galvanizing of a steel handrail. The ball connection point is seamless and is heat treated by means of removing the stress, thereby improving the safety performance thereof.

Description

technical field [0001] The invention relates to a preparation process for ball joints produced by a coreless shrinkage and expansion stamping method, in particular to a ball joint preparation process for combined ball joint railings, and belongs to the technical field of metal cold stamping processing. Background technique [0002] Where there is a danger of falling, railings must be installed. There are many types of railings. The combined ball joint railing is beautiful and easy to install. It is suitable for standardized batch production in factories and is widely used in industrial platforms, municipal gardens, combined The ball joints of ball joint railings are welded by metal ball joints and metal pipes. The ball joints are the nodes and connection points of railing columns, handrails, and crossbars. The preparation of ball joints has become the key technology for the production of combined ball joint railings. . [0003] The traditional preparation methods of ball jo...

Claims

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Application Information

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IPC IPC(8): B21D53/00E04H17/14
Inventor 陈掌文林建中
Owner 佛山市南海大和钢结构有限公司
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