Gear inner hole drum shape optimization method

An optimization method and gear technology, applied in turning equipment, coating, furnace type, etc., can solve the problems of large and enlarged diameter deviation at both ends of the hole, affecting the quality and yield of gears, and improve the quality and yield. The effect of diameter deviation reduction

Pending Publication Date: 2022-02-11
JIANGYIN QUANHUAFENG FINISH FORGING
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AI Technical Summary

Problems solved by technology

[0002] The gear needs to be heat treated after being pressed. During the heat treatment process, the inner hole of the gear will be deformed, and the two ports of the hole will become larger, resulting in a large diameter deviation between the two ends of the hole and the inner center, which affects the quality of the gear and the finished product. Rate

Method used

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  • Gear inner hole drum shape optimization method
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Embodiment Construction

[0015] All features disclosed in this specification, or steps in all methods or processes disclosed, may be combined in any manner, except for mutually exclusive features and / or steps.

[0016] Any feature disclosed in this specification (including any appended claims, abstract and drawings), unless expressly stated otherwise, may be replaced by alternative features which are equivalent or serve a similar purpose. That is, unless expressly stated otherwise, each feature is one example only of a series of equivalent or similar features.

[0017] Such as figure 1 Shown is a gear inner hole drum shape optimization method, the method steps are as follows:

[0018] (1) Prepare several straight bore gears;

[0019] (2) Conduct heat treatment carburizing and quenching test, and the inner hole of the gear shrinks and deforms;

[0020] (3) Use a three-coordinate detector to detect the size of the inner hole of the gear, and detect the difference between the smallest diameter point o...

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Abstract

The invention discloses a gear inner hole drum shape optimization method which comprises the steps: preparing a plurality of straight inner hole gears in advance, then carrying out a heat treatment carburizing and quenching test, after gear inner holes shrink and deform, detecting the size of the inner holes through three coordinates, and detecting the difference value between the minimum point of the diameter size of the gear inner holes and the middle point of the inner holes in the length direction, and the maximum difference (drum shape quantity) between the diameter of the part and the diameter of the inner holes; and according to the data, processing the required drum shape, so as to enable the drum shape quantity of the gear inner holes subjected to heat treatment to meet the requirement, and enabling the high point position of the drum shape to be just located in the middle of the inner holes in the length direction. The gear inner holes before heating are turned into the required drum-shaped holes, and after heat treatment, the turned holes counteract the diameter deviation caused by heat treatment, so that the overall diameter deviation of the holes is reduced, and the quality and the yield of the gears are improved.

Description

technical field [0001] The invention relates to a gear inner hole processing method, in particular to a gear inner hole drum shape optimization method used in gear manufacturing. Background technique [0002] The gear needs to be heat treated after being pressed. During the heat treatment process, the inner hole of the gear will be deformed, and the two ports of the hole will become larger, resulting in a large diameter deviation between the two ends of the hole and the inner center, which affects the quality of the gear and the finished product. Rate. Contents of the invention [0003] The invention relates to a method for optimizing the drum shape of the inner hole of a gear, which can correct the deviation of the diameter of the gear hole caused by heat treatment. [0004] To achieve this purpose, the method adopted in the present invention is: a method for optimizing the drum shape of the inner hole of a gear, and the steps of the method are as follows: [0005] (1) ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23B5/00C21D1/18C21D9/32C23C8/20
CPCB23B5/00C21D1/18C21D9/32C23C8/20
Inventor 周栋何建波张孝荣魏耀忠朱晓雷
Owner JIANGYIN QUANHUAFENG FINISH FORGING
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