System and method for measuring gear 3D profile based on line laser scanning

Abstract

The invention provides a system and method for measuring a gear 3D profile based on line laser scanning. The system includes a line laser, a first image sensor, a second image sensor, an objective table, an image acquisition card, a rotary encoder, a stepping motor, and a terminal with an operation function. The gear to be tested is disposed on the objective table. The line laser is disposed right in front of the gear to be tested. The first image sensor and the second image sensor are arranged on two sides of the line laser separately and have lenses directing at a direction which intersects an optical axis of the line laser at an included angle. The first image sensor and the second image sensor are in electrical connection with the image acquisition card. The rotary encoder is placed on the objective table and is connected to the terminal for recording rotation angles of the gear to be tested. The stepping motor serves to drive the objective table to rotate and is controlled by the terminal. The image acquisition card is connected to the terminal for controlling synchronous on-off and acquisition of the first image sensor and the second image sensor. The terminal serves to establish the 3D profile of the gear.

Description

technical field [0001] The invention relates to a measurement technology, in particular to a gear three-dimensional profile measurement system and method based on line laser scanning. Background technique [0002] As a key basic transmission component in the aerospace industry and mechanical equipment manufacturing industry, gears play an important role in enhancing the core competitiveness of my country's equipment manufacturing industry. The quality of the gear directly affects the performance of the product. Therefore, it is particularly important to measure the parameters of the gear to determine its qualification. However, due to the complex shape of the gear, the large number of measurement parameters, and the difficulty of measurement technology, its measurement has always been a difficult point in geometric measurement, which needs to be solved continuously. [0003] Although the application of gears has a long history, the research on gear measurement technology an...

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Problems solved by technology

[0006] The disadvantages of the existing detection equipment and methods are: (1) the contact measurement of the gear has a certain influence on the surface of the gear, and for large gears, the measurement equipment needs a large volume to meet the measurement requirements; (2) the shape of the gear Complex, with many measurement parameters, specific methods are required for the measurement of gear error and other information, and the complexity is high; (3) The measurement equipment has a complex structure and high cost, which cannot meet the requirements of real-time detection

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