Precision gears: How to Measure Them
1. Precision gear unit geometric error measurement
The measuring technique primarily employs the geometric analysis and measurement approach, which may treat the gear as a complicated geometric entity. The deviation of the tooth surface geometry of the gear may be measured using the defined measurement coordinate system and the design geometric parameters. It primarily employs the discrete coordinate point measuring method as well as the continuous geometric trajectory point scanning approach. The individual geometric deviations of the gears, which are primarily created by the tooth shape, tooth orientation, and pitch, are the error items assessed by these two approaches.
2. Precision gear error measuring technology that is complete
This measuring method is mostly based on meshing and rolling. The rotating motion transmission element is the gear. It meshes and rolls with the measurement gear to measure the total deviation under the theoretical installation center distance. The measurement technique includes a measurement method for detecting the comprehensive deviation of the tangent line of the gear and the comprehensive deviation of the tangent line of a single tooth, as well as a measurement method for single-face meshing measurement of gears.
3. Precision gear overall error measurement technology
This measurement technology is based on the overall error theory, using the gear as the geometric entity that realizes the transmission function, using the coordinate geometric analysis method to measure other individual geometries with high precision, integrating the error curve of the "static" gear as a whole according to the meshing sequence and position, or according to the single surface. Integrated measuring method of meshing, using special measuring gear
4. Measurement technology of gears in machinery
The technology has developed rapidly in recent years. The gear is integrated on the processing machine tool. The gear cannot be disassembled after the test. It needs to be mechanically measured on the machine tool immediately, and the parameters of the machine tool are adjusted according to the measurement results. The application of this measurement technology in forming toothpaste processing and large gear toothpaste processing can effectively improve production efficiency and reduce costs.
5. Laser measuring technique for gears
This technique relates to the use of laser technology in measuring the size and form of gears, such as laser length measurement systems, laser probe systems, laser holographic gear measurement systems, and so on.
Gears are mechanical components having teeth on the rim that mesh indefinitely to convey motion and power. The transmission of torque is accomplished by the meshing of teeth. Its degree of design and manufacture has a direct impact on the quality of industrial goods.
Early gears did not have specifications for tooth shape and pitch, so the continuously rotating driving wheel often could not make the driven wheel rotate continuously. In order to solve this problem, the tooth shape is developed into an arc shape, and the driven wheel can be continuously rotated by reducing the tooth pitch, which makes the water pumping device of the gear mechanism very popular.
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