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Design method suitable for evaluating large involute template of involute measuring instrument

A technology of measuring instruments and design methods, which is applied in the field of new large-size involute models, can solve problems such as processing difficulties, affecting the quality of large gears, and not establishing a large-size involute value transfer system.

Inactive Publication Date: 2019-03-29
BEIJING UNIV OF TECH
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Problems solved by technology

[0003] Large gears are widely used in engineering, but there are very few samples of large gears in my country, and a complete large-size involute value transmission system has not been established, resulting in inconsistent measurement results for large gears, which seriously affects the quality of large gears.
The root cause is that the involute sample of the large gear is large in size and complex in shape, which is not only difficult to process, but also lacks high-precision instruments for testing large-sized samples

Method used

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  • Design method suitable for evaluating large involute template of involute measuring instrument
  • Design method suitable for evaluating large involute template of involute measuring instrument
  • Design method suitable for evaluating large involute template of involute measuring instrument

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Embodiment Construction

[0030] The present invention will be described in further detail below in conjunction with practical applications, so that those skilled in the art can implement it with reference to the description.

[0031] The structure of the biaxial arc type large-size involute sample plate is as follows: figure 2 As shown, it is mainly composed of a standard block arc central axis 1, a centering shaft 2, a standard block 3, and a base body 4. The standard block 3 is a hardened steel part treated with ice-cold stability, and the base body 4 is coupled with a fastener for installing the shaft. There are high-precision center holes at both ends of the centering shaft 2, which are made of hardened steel and subjected to ice-cold stability treatment. The arc central axis 1 of the standard block and the centering axis 2 are in interference fit with the inner hole of the base body 4, and the connection is stable and reliable. The standard block 3 and the base body 4 are fixedly connected thr...

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Abstract

The invention discloses a design method suitable for evaluating large involute template of involute measuring instrument. In the method, a standard theory based involute profile of a large gear is replaced by a curved arc; the principle error of the two-axis arc type large involute template is obtained by calculating the deviation between the arc and the theoretical involute; different sizes of two-axis arc type large involute template are produced by adjusting the detection arc radius rc of a standard block and the center distance O1O2 between the center of a centering axis and the center ofa reference block detection arc. The principle error curve of the two-axis arc type large involute template designed according to the parameters is a double hump curve. When calibrating a measuring instrument with a large gear by using the two-axis arc type large involute template, the measurement result is different from the traditional involute template. The error of the instrument can be represented by error compensation of the obtained result.

Description

technical field [0001] The invention relates to a novel large-size involute sample plate suitable for evaluating involute instruments, which belongs to a reference involute sample plate and is used for high-precision calibration of tooth profile measurement of involute instruments. Background technique [0002] As an important component, gears are widely used in military equipment, industrial products and civilian commodities. They have the characteristics of compact structure, accurate transmission ratio and high transmission efficiency. With the rapid development of manufacturing industries such as shipbuilding, wind power generators, oil delivery systems, and construction machinery, the demand for large gears is increasing. Large gears have become an indispensable part of modern engineering technology applications. and national defense construction play an important role. [0003] Large gears are widely used in engineering, but there are very few samples of large gears i...

Claims

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Application Information

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IPC IPC(8): G01B21/00G01B21/20
CPCG01B21/00G01B21/045G01B21/20
Inventor 陈洪芳李宝山石照耀李长亮孙衍强
Owner BEIJING UNIV OF TECH
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