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Forging and forming process of complex I-shaped connector

A forming process and I-shaped technology, which is applied in the field of mechanical processing, can solve problems such as the forging and forming process of complex I-shaped connectors, and achieve the effects of reducing workpiece defects, improving the mechanical properties of the workpiece, and stabilizing the forming process

Active Publication Date: 2016-08-31
SHANGHAI JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the above-mentioned deficiencies in the prior art, the present invention proposes a complex I-shaped connector forging forming process, which can effectively improve the utilization rate of materials and the mechanical properties of parts, and ensure the service performance of the connector; at the same time, it solves the problem of easy removal of workpieces , to achieve mass production

Method used

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  • Forging and forming process of complex I-shaped connector
  • Forging and forming process of complex I-shaped connector
  • Forging and forming process of complex I-shaped connector

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Such as figure 1 As shown, this embodiment includes the following steps:

[0033] The first step, blanking, adopts 20# steel annealed bar stock, in which: the height of the bar stock is 40mm, the diameter is 3.6mm, and the diameter of the stock is smaller than the diameter of the middle rod of the connecting head by d 1 The diameter is 0.2mm smaller.

[0034] The second step is to extrude the cylindrical blank for the preparation of the connector, and the diameter of the die cavity is D 1 The upper die, the lower die and the sleeve are pressed together by 14.9 mm to obtain the shape of the upper end head, so that the upper end of the workpiece is completely filled with the length d 4 greater than d 3 = 11.8 mm.

[0035] Phosphorus saponification is used for lubrication in the extrusion process.

[0036] The extrusion die used in the extrusion includes: a laterally separable die and a floating control guide sleeve, which can realize the forming of the head with a la...

Embodiment 2

[0052] This embodiment includes the following steps:

[0053] The first step, blanking, adopts 15# steel annealed bar stock, in which: the bar stock height is 40mm, the diameter is 3.6mm, and the diameter of the stock is smaller than the diameter of the middle rod of the connecting head by d 1 The diameter is 0.2mm smaller.

[0054] The second step is to extrude the cylindrical blank for the preparation of the connector, and the diameter of the die cavity is D 1 The upper die, the lower die and the sleeve are pressed together by 14.9 mm to obtain the shape of the upper end head, so that the upper end of the workpiece is completely filled with the length of d 4 greater than d 3 = 11.8 mm.

[0055] The third step is to upset the stem of the workpiece. The upper die, the lower die and the sleeve are pressed together by 7.85 mm to make the blank fill the entire die cavity. mm, the upper half of the stem forms a step.

[0056] The fourth step is to pre-forge the upper part of ...

Embodiment 3

[0059] This embodiment includes the following steps:

[0060] The first step, blanking, adopts 8# steel annealed bar stock, in which: the height of the bar stock is 40mm, the diameter is 3.6mm, and the diameter of the stock is smaller than the diameter of the middle rod of the connecting head by d 1 The diameter is 0.2mm smaller.

[0061] The second step is to extrude the cylindrical blank for the preparation of the connector, and the diameter of the die cavity is D 1 The upper die, the lower die and the sleeve are pressed together by 14.9 mm to obtain the shape of the upper end head, so that the upper end of the workpiece is completely filled with the length of d 4 greater than d 3 = 11.8 mm.

[0062] The third step is to upset the stem of the workpiece. The upper die, the lower die and the sleeve are pressed together by 7.85 mm to make the blank fill the entire die cavity. mm, the upper half of the stem forms a step.

[0063] The fourth step is to pre-forge the upper pa...

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Abstract

The invention discloses a complex I-shaped connector forging and forming technique and belongs to the field of machining. The complex I-shaped connector forging and forming technique comprises the steps that firstly, the lower end of a blank of a bar-shaped structure is extruded, so that a head is obtained; secondly, the portion above the head is upset and deformed, so that a big step of a rod portion is obtained; finally, pre-forging and finish forging are conducted on the head, so that a complex I-shaped connector is obtained. According to the complex I-shaped connector forging and forming technique, the utilization rate of materials can be effectively increased, the mechanical property of parts can be effectively improved, and the service performance of the connector is guaranteed; meanwhile, a workpiece can be taken out conveniently, and volume production is achieved.

Description

technical field [0001] The invention relates to a technology in the field of mechanical processing, in particular to a forging and forming process of a complex I-shaped connector. Background technique [0002] The complex I-shaped connector is a non-standard special-shaped connector, with a step in the middle rod and different shapes at both ends. Due to the complexity of its shape, it is usually manufactured by casting. However, the quality of the connector parts produced by the casting process is complicated, and casting defects such as pores, shrinkage cavities, and blisters are easy to form; due to the casting structure, its mechanical properties are relatively poor, which affects the connection strength of the components. [0003] After searching the prior art, it was found that Chinese Patent Document No. CN101444816, published (announcement) date 2009.06.03, discloses a forging process for I-shaped parts. This technology forges a cylindrical blank into a rectangular b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21J5/02B21J5/08B21J1/02
Inventor 胡成亮杨丰钰赵震
Owner SHANGHAI JIAOTONG UNIV
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