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Method for checking gear involute tooth profile error

A technology of tooth profile error and inspection method, applied in the field of transmission gears, can solve the problems of tediousness, inability to implement processing, and inability to meet product requirements

Inactive Publication Date: 2014-09-24
XIAN NORTH ELECTRO OPTIC TECH DEFENSE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The original tooth profile coordinate calculation manual is only applicable to the calculation of the tooth profile coordinates of spur gears and spur bevel gears, which obviously cannot meet the requirements of use.
During the process inspection of the product, it is only required to change the design parameters of the bevel gear to a non-displaced bevel gear, otherwise the processing cannot be carried out, which obviously cannot meet the needs of the product.
In view of this situation, considering the lengthy and cumbersome calculation process of the tooth profile coordinates, it often takes a long time for the craftsmen and seriously affects the production progress. When the calculation is wrong, the impact on production is even more serious

Method used

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  • Method for checking gear involute tooth profile error
  • Method for checking gear involute tooth profile error
  • Method for checking gear involute tooth profile error

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0082] The present invention is used for the testing method of gear involute tooth form error, and this method comprises the following steps:

[0083] Step 1, measure and calculate the tooth shape coordinate points of the gear under test;

[0084] Step 2, deduce the theoretical involute tooth profile coordinates of the height displacement and tangential displacement bevel gears on the basis of the calculation of the involute tooth profile coordinate points of the original spur gear and straight bevel gear;

[0085] Step 3, the distance between the origin of the tooth shape coordinates of the measured gear in step 1 and the theoretical involute tooth shape tooth top circle coordinates derived in step 2 is the tooth shape error;

[0086] According to the principle of involute tooth shape and the calculation formula of high-displacement and tangential-displacement bevel gear big-end circular tooth thickness calculation formula, the calculation formula of fixed chord tooth thickne...

Embodiment 2

[0105] The parameters of a product of the company's grade 7 precision spur bevel gear are shown in Table 2:

[0106] Table 2 Parameters of cut straight bevel gear mm

[0107]

[0108] According to the parameters of the cut straight bevel gear in Table 2 in this example, find the coordinates of each point on the gear tooth profile.

[0109] Solution: First calculate the reference pitch circle diameter of the bevel gear:

[0110]

[0111] Find Zy and m when looking up the tooth shape coordinate value table 3 y

[0112] m y =m(1+0.463421x 1 +0.31831x t1 )

[0113] =1[1+0.463421(-0.5)+0.31831(-0.01)]=0.765

[0114] Z y = d y m y = 228.2 0.765 = 298.3

[0115] At this time, the distance from the coordinate origin to the theoretical addendum circle is:

[0116...

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Abstract

The invention relates to the field of transmission gears, in particular to a method for checking a gear involute tooth profile error. The method comprises the following steps: 1, measuring and calculating tooth profile coordinate points of a measured gear; 2, on the basis of calculating involute tooth profile coordinate points of an original straight toothed spur gear and a straight toothed bevel gear, deducing theoretical involute tooth profile coordinates of a height displacement bevel gear and a tangential displacement bevel gear; 3, regarding the distance between a tooth profile coordinate original point of the measured gear in the step 1 and theoretical involute tooth profile addendum circle coordinates deduced in the step 2 as the tooth profile error. According to the method, a theoretical coordinate value can be conveniently and quickly obtained according to the constant chord tooth thickness of the height displacement gear and the tangential displacement gear; each measured actual tooth profile point coordinate value is compared with the theoretical coordinate value, so that an operator can conveniently and quickly check the error.

Description

technical field [0001] The invention relates to the field of transmission gears, in particular to a method for testing gear involute tooth profile errors. Background technique [0002] Gear transmission is the main form of mechanical transmission. Involute gears have been widely used in industrial production for a long time because of their accurate transmission motion, stable motion, and certain load-carrying capacity. The tooth profile error of involute gears is one of the important indicators for evaluating the stability and accuracy of gears. It is an important item to ensure the stability and accuracy of gears and to implement correct and continuous meshing of gear transmission. At present, the measurement of tooth profile, especially the measurement of cones, is widely used. The gear tooth shape is used as an index to evaluate the smoothness of gear operation. [0003] Judging the tooth shape error by measuring the chordal tooth height and chordal tooth thickness is o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F19/00
Inventor 张勇程会民李时威安君伟杨永娟
Owner XIAN NORTH ELECTRO OPTIC TECH DEFENSE
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