On-machine measurement method for tooth surface deviation of spur gear

A measurement method and technology of spur gears, applied in the direction of metering gears, etc., can solve problems such as gaps, and achieve the effect of improving measurement efficiency and saving manufacturing time and cost.

Inactive Publication Date: 2018-10-12
NANJING INST OF TECH
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0003] At present, although domestic experts and scholars have conducted a lot of research on on-machine measurement, there is still a gap compared with foreign countries.

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  • On-machine measurement method for tooth surface deviation of spur gear
  • On-machine measurement method for tooth surface deviation of spur gear
  • On-machine measurement method for tooth surface deviation of spur gear

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Embodiment Construction

[0067] In order to deepen the understanding of the present invention, the present invention will be further described below in conjunction with the accompanying drawings and embodiments, which are only used to explain the present invention and do not limit the protection scope of the present invention.

[0068] In the invention of an on-machine measurement method for spur gear tooth surface deviation and the specific implementation process of the on-machine detection system, generally speaking, according to figure 1 The steps shown are as follows: S1 establishes the mathematical model of the tooth surface; S2 optimizes the measurement point plan, S3 determines the measurement point; S4, on-machine measurement, measures the coordinates of the optimized measurement point; S5 calculates the tooth surface deviation. The detailed steps are as follows:

[0069] 1. Build an on-machine test bench for gears. This invention is based on the existing structure of the CNC gear grinding mac...

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Abstract

The invention discloses an on-machine measurement method for a tooth surface deviation of a spur gear. The method comprises the following steps that a) a gear tooth surface measuring model is established, and a gear tooth surface point K equation is derived according to a point K equation in an involute tooth profile; and b) measurement points in the on-machine measurement point of the tooth surface deviation are planned, and an optimization scheme is provided for the measurement points selected in the on-machine measurement process according to the established gear tooth surface measuring model. After that a measurement area in the tooth surface is determined, a measurement point number plan based on the normal curvature radius and a measurement point distribution plan based on a Hammersley sequence are provided. According to the method, an on-machine measurement testing stand is formed by adding a Renishaw probe system to a present structure based on a numerical control gear grindingmachine, and on-machine measurement is realized. A gear to be measured is measured in the on-machine measurement gear testing stand, and a measuring result of the tooth surface deviation of the gearis obtained.

Description

technical field [0001] The invention relates to the technical field, in particular to an on-machine measuring method for spur gear tooth surface deviation. Background technique [0002] Gear measurement is a key step to ensure the quality and accuracy of gears. In the traditional gear manufacturing process, the error measurement of gears is done by independent gear measuring instruments, such as GMM and CMM. These devices must be placed in special measuring rooms . This process increases the cost and manufacturing cycle of the gear manufacturing process. In addition, for high-precision and large-sized gears, offline measurement will bring great troubles to the secondary clamping of high-precision gears and the handling process of large gears. How to realize the precise and rapid measurement of gears needs to continuously improve the measurement technology of gears in the process of processing. The on-machine measurement technology of gears can save a series of loading, unl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B3/12
CPCG01B3/12
Inventor 朱晓春周雯超丁文政孙晓敏
Owner NANJING INST OF TECH
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