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A manufacturing process of a fine-cut tooth cutter head for an external-toothed barrel broach

A manufacturing process and cutter head technology, which is applied in the manufacturing process field of external gear barrel type broach fine cutting tooth cutter head, can solve the problems of long manufacturing cycle of cutter head, lower processing quality of parking gear, and low manufacturing accuracy of cutter head, etc.

Active Publication Date: 2020-12-11
JIANGYIN SAITE PRECISION TOOL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the barrel broach cutterheads for processing wheel grooves are mainly foreign finished products, and their prices are relatively expensive.
Domestic manufacturers have also achieved certain results in the process of using barrel broaches to process parking gears, but they have also encountered some key technical problems that need to be solved urgently. The main performance is the manufacturing accuracy of the barrel broach cutterhead itself. Not high, the manufacturing cycle of the cutter head is long, the wear resistance of the cutter head is poor, and the processing quality of the parking gear is reduced

Method used

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  • A manufacturing process of a fine-cut tooth cutter head for an external-toothed barrel broach
  • A manufacturing process of a fine-cut tooth cutter head for an external-toothed barrel broach
  • A manufacturing process of a fine-cut tooth cutter head for an external-toothed barrel broach

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Experimental program
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Effect test

Embodiment 1

[0060] Such as Figures 1 to 7 Shown is an embodiment of the manufacturing process of a fine-cut toothed cutterhead for an external tooth cylinder type broach of the present invention, including the following process steps:

[0061] (1) Blank manufacturing: the high-speed steel powder is pressed and forged at high temperature and high pressure to make a cutter head blank;

[0062] (2) Turning processing: use a CNC lathe to install the cutter head blank on a precision chuck for turning processing; among them, the inner hole, end face, and front edge face of the cutter head are processed in one clamping to ensure the size of each part. Concentricity and perpendicularity;

[0063] (3) Wire-cut rough machining: Use CNC wire-cut electric discharge machine tools to rough-machine the internal teeth and positioning keyways of the cutterhead;

[0064] (4) Vacuum heat treatment: place the wire-cut rough-processed cutter head in a vacuum furnace for vacuum quenching and vacuum temperin...

Embodiment 2

[0095] The Klingelnberg Gear Testing Center is used to detect the fine-cutting cutter head of the external gear barrel broach in Example 1, and input the fine-cutting cutter head according to the German standard DIN3962, the national standard GB / T 10095 and the Japanese standard JIS B1751, etc. Parameters and technical indicators are tested to comprehensively evaluate the manufacturing accuracy level of the fine-cutting cutter head. The detection structure is as follows:

[0096] Testing Standard Execution precision class Test results German standard DIN3962 Level 7 qualified National standard GB / T 10095 Level 7 qualified Japanese standard JIS B1751 Level 3 qualified

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Abstract

The invention relates to the technical field of metal cutting tool manufacturing, and particularly relates to a manufacturing process of an external gear drum type broach fine gear cutter disc. The process comprises the technological steps of blank manufacturing, turning machining, wire cutting rough machining, vacuum heat treatment, cold treatment, surface grinding, rake face grinding, walking wire slowly for inner tooth fine cutting, cutter fine grinding through cylindrical grinding and the like, wherein in the surface grinding working procedure, low-temperature stress-removing aging treatment procedures are arranged between the surface rough grinding and the surface semi-fine grinding and between the surface semi-fine grinding and the surface fine grinding correspondingly to eliminate the surface stress generated in the grinding process so as to reduce the deformation after the surface fine grinding. According to the process, the manufacturing precision of the drum type broach cutter disc is improved, the wear resistance of the cutter disc is improved, and the manufacturing cost of the cutter disc is reduced.

Description

technical field [0001] The invention relates to the technical field of metal cutting tool manufacturing, in particular to a manufacturing process of a fine-cutting tooth cutter head of an external gear barrel type broach. Background technique [0002] At present, the processing technology of external gear surface forming is divided into generating method and forming method in principle. The generating method includes gear hobbing and shaping, and the forming method includes gear milling. However, with the development and progress of the industry, these processing methods can no longer meet the process requirements of some products. [0003] For example, in the automobile manufacturing industry, the parking gear is a key component in the automatic transmission of the automobile. The processing quality of the wheel groove of the parking gear will directly affect the braking performance of the entire car. Due to the influence of profile shape, the gear hobbing and gear shaping...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23P15/42
CPCB23P15/42
Inventor 陆少峰李云文谢秋宏王炳军
Owner JIANGYIN SAITE PRECISION TOOL
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