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Method for profiling involute straight teeth conical gear

A technology of bevel gears and involutes, applied in the field of gear manufacturing, can solve problems such as difficult shape modification of gear planers, and achieve the effect of solving meshing contact

Inactive Publication Date: 2005-05-11
HUAZHONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

The traditional processing method of straight bevel gears is mainly obtained by machining with a gear planer, or the gear electrode is processed by a gear planer and then used to manufacture a gear mold, and finally the blank is forged in the gear mold method to produce gears, it is difficult for gear planers to modify the shape of bevel gears

Method used

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Examples

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Embodiment Construction

[0018] Taking the spur bevel gear used in the differential of a car as an example, firstly input the equation of the theoretical involute into the three-dimensional modeling CAD software Pro / E to generate the theoretical involute of the spur bevel gear, and connect the involute by connecting the involute. The center of the sphere and the point on the involute to get the theoretical scanning trajectory.

[0019] Then, the plastic theory analysis combined with the finite element numerical simulation method is used to calculate the tooth surface deformation of each bevel gear during meshing, so as to determine the required tooth profile modification (about 0 ~ 80um) and tooth direction modification (0 ~ 80um). 40um). The principle of determining the amount of drum repair is that when the gears are meshed, the tooth surface after drum repair is elastically or elastically deformed by load compression, and then becomes the shape of a theoretical involute. This can achieve the purpo...

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PUM

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Abstract

A method for correcting cone gear includes utilzing three dimensional moulding CAD software to confirm correction amount, finalizing tooth profile correction for theory evolute line and finalizing tooth alignment correction for scanning trace line, structuring gear correction mode by using two corrected lines and converting the model to be digital control codes inputted to digit controlled machine, processing semifinished product directly to the form of corrected gear, gear electrode or gear model.

Description

technical field [0001] The invention belongs to a manufacturing method of gears, and particularly relates to the shaping of straight-toothed bevel gears. Background technique [0002] The tooth surface of the commonly used standard gear is a theoretical involute, and the actual meshing tooth surface deviates from the theoretical involute due to elastic deformation or local elastic-plastic deformation during meshing, which leads to noise and vibration; Errors cannot be avoided during processing and installation, and it is difficult to ensure dimensional accuracy and installation accuracy, which will cause the meshing area of ​​the gear pair not to be in the middle of the tooth surface. Through the gear modification method, the middle part of the tooth surface can be modified into a convex shape, and the meshing area can be located in the middle part of the tooth surface. [0003] The gear modification method of publication number CN1480291A is applied to spur gears. The meth...

Claims

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Application Information

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IPC IPC(8): B23P6/00G05B19/4097G06F17/50
CPCY02P90/02
Inventor 王新云夏巨谌胡国安
Owner HUAZHONG UNIV OF SCI & TECH
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