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Gear pump and automobile power steering pump gear blank and forming processing technology

A technology of power steering pump and processing technology, which is applied in the field of gear processing, and can solve problems such as long construction period, short construction period and low work efficiency

Pending Publication Date: 2020-10-20
无锡市宏英达机械配件有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the current process has the following disadvantages: 1. Low work efficiency and long construction period, which cannot meet the requirements of large quantities and short construction period; 2. There is a lot of waste of rough materials, and the finishing time is too long; 3. The material structure is easy to cause damage; 4. The tensile strength and yield strength of the blank are relatively poor

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1, a kind of gear pump and automobile power steering pump gear blank of the present invention and the processing technology of forming, comprise the following steps:

[0019] S1: Raw material reformation: prepare 38crmoala and 20CrMnTi disc raw materials and perform surface pretreatment on the disc raw materials respectively;

[0020] S2: cold forming: using a multi-station cold heading machine to cold form the raw materials after surface pretreatment to form a blank;

[0021] S3: quenching and tempering: quenching and tempering the blank after cold forming, the HRC of quenching and tempering treatment is 25-28;

[0022] S4: Lathe processing: put the quenched and tempered blank on the CNC lathe, and process it to the required size of the corresponding workpiece;

[0023] S5: Gear hobbing: Hobbing the processed blank in the CNC gear hobbing machine to form gears;

[0024] S6: heat treatment: the gear after hobbing is treated, the gear of 38crmoala material i...

Embodiment 2

[0028] Embodiment 2, a kind of gear pump and automobile power steering pump gear blank of the present invention and the processing technology of forming, comprise the following steps:

[0029] S1: Raw material reformation: prepare 38crmoala and 20CrMnTi disc raw materials and perform surface pretreatment on the disc raw materials respectively;

[0030] S2: cold forming: using a multi-station cold heading machine to cold form the raw materials after surface pretreatment to form a blank;

[0031] S3: quenching and tempering: quenching and tempering the blank after cold forming, the HRC of quenching and tempering treatment is 25-28;

[0032] S4: Lathe processing: put the quenched and tempered blank on the CNC lathe, and process it to the required size of the corresponding workpiece;

[0033] S5: Gear hobbing: Hobbing the processed blank in the CNC gear hobbing machine to form gears;

[0034] S6: heat treatment: the gear after hobbing is treated, the gear of 38crmoala material i...

Embodiment 3

[0038] Embodiment 3, a gear pump and automobile power steering pump gear blank and processing technology, differs from Embodiment 1 in that step S2 is omitted.

[0039] Sampling and determination can be carried out according to the method described in GB / T13298-2015 "Metal Microstructure Inspection Method". Compared with Example 2, the processing time of Example 1 is shortened by 20%. Than, the gear pump and the automobile power steering pump gear blank processed in embodiment 3 have better performance and more wear resistance than the finished product processed in embodiment 2.

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PUM

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Abstract

The invention discloses a gear pump and automobile power steering pump gear blank and forming processing technology, and relates to the technical field of gear processing. The gear pump and automobilepower steering pump gear blank and forming processing technology comprises the steps of S1, raw material modification; S2, cold heading forming; S3, quenching and tempering; S4, turning; S5, gear hobbing; S6, heat treatment; S7, grinder grinding; and S8, post treatment. According to the gear pump and automobile power steering pump gear blank and forming processing technology, the technology is simple, the production process and the product structure are stable, a new cold forming technology is introduced, the utilization rate of materials is increased, the work efficiency is improved, the processing time is shortened, the gear performance is optimized, a gear pump and automobile power steering pump gear blank prepared by the technology has uniform materials and excellent performance, thewear performance of the gear pump and automobile power steering pump is improved, and the economic benefit is increased.

Description

technical field [0001] The invention relates to the technical field of gear processing, in particular to a gear pump and an automobile power steering pump gear blank and a forming process. Background technique [0002] The gears of gear pumps and automotive power steering pumps require that the gears should be smooth, free from cracks and damage, and the working surface should not have burrs and bite marks. The gears should have the characteristics of surface wear resistance and high precision. The materials used are 38crmoala and 20CrMnTi low-carbon alloy steel. At present, two methods are used to process blanks: directly processing blanks from bars or hot forging blanks from bars. One method is to directly process the blank from the bar. This is the earliest traditional method, and it is still used by some people. The bar of the corresponding specification of 38crmoala and 20CrMnTi is directly processed on the CNC lathe after sawing, and processed to the corresponding requ...

Claims

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Application Information

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IPC IPC(8): B23P15/14
CPCB23P15/14
Inventor 朱洪平朱青竹
Owner 无锡市宏英达机械配件有限公司
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