Precise design and profile modification method for asymmetric gear

An asymmetric, gear-based technology, applied in computing, special data processing applications, instruments, etc., can solve problems such as damage to the integrity of gears, shortened service life, and complex processing procedures

Inactive Publication Date: 2014-02-19
WUHAN UNIV OF TECH
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Problems solved by technology

In the manufacture of traditional modified gears, the unmodified gears are generally processed first, and then the modified processing is performed. The processing procedure is complicated, the efficiency is low, and the precision is low, and the later modified processing will destroy the integrity of the gears. The internal flow line is cut off, the strength of the gear will be reduced, and the service life will be shortened

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  • Precise design and profile modification method for asymmetric gear
  • Precise design and profile modification method for asymmetric gear
  • Precise design and profile modification method for asymmetric gear

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Embodiment Construction

[0052] In order to have a clearer understanding of the technical features, purposes and effects of the present invention, the specific implementation manners of the present invention will now be described in detail with reference to the accompanying drawings.

[0053] Such as Figure 1-Figure 6 Shown, the present invention a kind of accurate design and modification method of asymmetrical gear, comprises the following steps:

[0054] S1. According to the structure of the rack tool, the tooth profile equation of the rack tool is obtained; the working tooth side and the non-working tooth side of a tooth of the rack tool have different pressure angles and root arcs, and the pressure angle is modified for the tool , so that the working tooth side of the tool has two different pressure angles; the equations of the modified and unmodified pressure angles of the tool tooth side corresponding to the working tooth side of the gear are given separately;

[0055] S2. Carry out coordinate...

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Abstract

The invention relates to a precise design and profile modification method for an asymmetric gear. The method comprises the following steps that S1, the tooth profile equation of a rack tool is obtained according to the structure of the rack tool; S2, coordinate transformation is carried out on the tooth profile equation of the rack tool according to the movement rule of the rack tool to obtain a rack tool equation under a gear coordinate system; S3, a meshing equation is obtained according to the meshing rule of the rack tool and the gear; S4, the tooth profile equation of the asymmetric gear is determined according to the rack tool equation and the meshing equation; S5, three-dimensional modeling is carried out according to tooth profile data. The profile modification method directly carrying out pressure angle profile modification on the rack tool is disclosed, the tool after the profile modification can directly carry out machining to obtain the formed gear having the involute modified, the gear machining efficiency is improved, and the obtained formed gear through the profile modification is simple and practical.

Description

technical field [0001] The invention relates to an accurate design and modification method of an asymmetrical gear. Background technique [0002] Gear transmission is one of the important mechanical transmission methods. Currently, involute symmetrical gears are mainly used in industrial production. In the process of transmission, asymmetric gears can not only meet the requirements of fixed transmission ratio and variable center distance of symmetrical gears, but also improve the load-carrying capacity and have better dynamic characteristics. Therefore, in the transmission system with high torque and high speed It has a good application prospect and a good research value. [0003] The working tooth side and the non-working tooth side of the asymmetric gear have different pressure angles and root arcs. In the actual design process, the working tooth side and the non-working tooth side can be designed according to the load requirements. During the meshing process of gears, d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F17/50G06F19/00
Inventor 华林邓小禾韩星会
Owner WUHAN UNIV OF TECH
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