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Method for checking tooth root interference of spiral bevel gears

A technology of spiral bevel gear and inspection method, which is applied in the field of gear transmission and can solve problems such as interference

Inactive Publication Date: 2018-06-05
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] Purpose of the invention In order to solve the root interference problem of the spiral bevel gear, the present invention provides a method for checking the root interference of the spiral bevel gear, which can detect the tooth root interference caused by too large tool fillet or unreasonable machine tool parameter settings, and determine The boundary line between the actual transition surface and the working tooth surface and the interference area of ​​​​the tooth root

Method used

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  • Method for checking tooth root interference of spiral bevel gears
  • Method for checking tooth root interference of spiral bevel gears
  • Method for checking tooth root interference of spiral bevel gears

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Embodiment Construction

[0045] Such as figure 1 Shown, the inspection method of spiral bevel gear dedendum interference of the present invention, concrete steps:

[0046] (1) The basic parameters of the spiral bevel gear pair include the height of the outer end addendum, the height of the outer end dedendum, the root cone angle, the pitch cone angle, the face cone angle, the top clearance, the tooth width, the outer cone distance and the inner cone distance, according to The above geometric parameters calculate the inner bevel addendum height, inner bevel dedendum height, design dedendum line Γ f and the design boundary Γ c , and express these contour elements on the rotation projection surface of the gear teeth, and determine the relative positional relationship of each geometric element.

[0047] (2) According to the machine tool adjustment parameters and tool parameters of the bevel gear pair, especially the tool fillet parameters, with the help of the gear space meshing principle and coordinat...

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Abstract

The invention discloses a method for checking tooth root interference of spiral bevel gears, which comprises the steps of calculating the inner tapered tooth crest height, the inner tapered tooth rootheight, a designed tooth root line and a designed boundary line of the gear according to geometric parameters, and determining a positional relation of the geometric elements; setting machine tool adjustment parameters and cutter parameters of the gear pair, and determining an actual tooth root line and an actual boundary line; solving small-gear rotation angles of an engaging-in point and an engaging-out point according to geometric conditions of the gear pair for being engaged at the tooth crests of the big gear and the small gear, discretizing the whole engaging process, performing tooth surface contact analysis on all small-gear rotation angles, transforming a tooth top line of the current gear to a paired gear to obtain a tooth crest projection line, discretizing the tooth crest lineto obtain a potential point of tooth root interference, further building a tooth root interference model, judging whether interference occurs or not according to the normal distance, and repeating the process to obtain a tooth root interference area. According to the method, tooth root interference caused by excessively large round corners of the cutter or unreasonable parameter setting of the machine tool can be checked out, and the actual boundary line between a transitional curved surface and a working gear surface and the tooth root interference area are determined.

Description

technical field [0001] The invention belongs to the technical field of gear transmission, in particular to a method for inspecting root interference of spiral bevel gears. Background technique [0002] During the transmission process of the spiral bevel gear pair, due to factors such as unreasonable dedendum design or tooth degeneration, installation errors and other factors, the abnormal meshing phenomenon between the tooth top of the small wheel and the tooth root of the large wheel or between the tooth top of the large wheel and the tooth root of the small wheel is caused. , called dedendum interference; it is a design defect, often accompanied by strong vibration and impact, prone to unfavorable phenomena such as broken teeth and fatigue failure at the dedendum, affecting the stability and service life of gear transmission, so in The design, processing and installation adjustment of the gear pair must be inspected and eliminated. [0003] The root fillet design and the ...

Claims

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Application Information

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IPC IPC(8): G01M13/02
CPCG01M13/021
Inventor 苏进展陈广艳常乐浩刘永生贺朝霞
Owner CHANGAN UNIV
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