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Precise forging method for engineering machine connecting rod

A technology of precision forging and engineering machinery, applied in the field of precision forging of engineering machinery connecting rods, can solve the problems of large forging machining allowance and material consumption, and achieve the effects of less uniform processing, cost reduction, and stable tolerances.

Inactive Publication Date: 2017-10-10
河池桂嘉知识产权服务有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a precision forging method for engineering machinery connecting rods, so as to solve the problems of large forging processing allowance and large material consumption of existing engineering machinery connecting rods

Method used

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  • Precise forging method for engineering machine connecting rod
  • Precise forging method for engineering machine connecting rod

Examples

Experimental program
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Effect test

Embodiment 1

[0015] Such as figure 2 The engineering machinery connecting rod shown has a large connecting rod end and a small connecting rod end connected by rods, and holes are respectively arranged on the large connecting rod end and the small connecting rod end;

[0016] The precision forging method of the engineering machinery connecting rod comprises the following steps:

[0017] A. The billet is heated at a temperature of 1180°C to 1200°C;

[0018] B. Place the billet in the cavity of the rod drawing die to elongate the rod, and then place it in the cavity of the first forging die to forge a rough forging, such as figure 1 shown;

[0019] C. Place the forging rough blank in the cavity of the second forging die to forge the forging, such as figure 2 shown;

[0020] D. Trimming, deburring and shot blasting of forgings;

[0021] E. Place the forging in the cavity of the correcting precision pressing forging die for calibration and precision pressing, and the temperature is 500°C...

Embodiment 2

[0023] A precision forging method for an engineering machinery connecting rod, comprising the following steps:

[0024] A. The billet is heated at a temperature of 1180°C to 1200°C;

[0025] B. Place the billet in the cavity of the rod drawing die to elongate the rod, and then place it in the cavity of the first forging die to forge a rough forging, such as figure 1 shown;

[0026] C. Place the forging rough blank in the cavity of the second forging die to forge the forging, such as figure 2 shown;

[0027] D. Trimming, deburring and shot blasting of forgings;

[0028] E. Place the forging in the cavity of the calibrated sizing forging die for calibration and sizing, and the temperature is 500°C to complete the precision forging of the engineering machinery connecting rod; other features are the same as in Embodiment 1.

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Abstract

The invention discloses a precise forging method for an engineering machine connecting rod, and relates to the technical field of connecting rod precise forging and manufacturing. The method comprises the following steps that A, blank heating is conducted, and the temperature ranges from 1,180 DEG C to 1,200 DEG C; B, a blank is arranged in a die cavity inner drawing-out rod part of a rod part drawing-out die and then placed in a die cavity of a first forge die, and a forge piece rough blank is obtained; C, the forge piece rough blank is placed in a die cavity of a second forge die to be forged, and a forge piece is obtained; D, the forge piece is subjected to edge cutting, burr grinding and shot blasting treatment; and E, the forge piece is placed in a die cavity of a correction fine press forge die to be corrected and subjected to fine press, the temperature ranges from 500 DEG C to 700 DEG C, and precise forging of the engineering machine connecting rod is finished. Compared with the prior art, the problems that during existing engineering machine connecting rod forging, the machining allowance is large, and material consumption is large can be solved.

Description

technical field [0001] The invention relates to the technical field of precision forging manufacturing of connecting rods, in particular to a method for precision forging of engineering machinery connecting rods. Background technique [0002] There is an existing construction machinery connecting rod with large and small head center holes. The connecting rod is made into a billet by air hammer, forged, edge trimmed, deburred, shot blasted, and finely pressed. However, when the billet is made, the connecting rod The large and small head holes are difficult to form at one time, resulting in a small machining allowance for the two holes of the connecting rod forging blank, and the tolerance of the center distance between the two holes cannot be stably controlled within the design range, resulting in increased forging hole thickness and high material consumption. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a prec...

Claims

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Application Information

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IPC IPC(8): B21J5/02B21J5/06
CPCB21J5/027B21J5/002B21J5/02B21J5/06
Inventor 黄丽萍
Owner 河池桂嘉知识产权服务有限公司
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