Accuracy checking method and device for small and medium-sized high-precision encoders
A high-precision encoder and encoder technology, which is applied in the field of precision checking devices for small and medium-sized high-precision encoders, can solve problems such as low cost performance, weak versatility, and restrictions on the development of encoders
Inactive Publication Date: 2016-06-15
CHANGCHUN UNIV OF SCI & TECH
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Problems solved by technology
Due to the shortcomings of traditional encoder detection systems (metal polygon detection, high-precision encoder detection) such as difficult installation and debugging, complex structure, weak versatility, and low cost performance, the application of encoders in modern technology fields is limited to a certain extent. development, so further research on the encoder detection system is imminent
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[0012] The structural features of the small-size high-precision encoder checking device in the present invention are specifically described below, see figure 1 , figure 2 As shown, the device consists of a rotation angle calibration mechanism and a transmission mechanism, in which:
[0013] 1. The rotation angle calibration mechanism is composed of an indexer 1, a laser generator 11, an interference mirror 12, and a mirror 13. The indexer 1 contains a multi-tooth indexing plate 4, and the rotation accuracy of the multi-tooth indexing plate is ±1", so this The device can check the accuracy of high-precision encoders (such as encoders with a resolution of 21 bits, 22 bits or higher precision). The upper surface of the indexer 1 is fixed with the reflector 13 through bolt connections, and the lower surface of the indexer 1 It is also fixed together with the tray 3 through bolt connection, so that the mirror 13, the indexer 1, and the pallet 3 have no relative movement. The inte...
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The invention discloses an accuracy checking device for small and medium-sized high-precision encoders, which belongs to the technical field of conventional instrument accuracy checking. The existing encoder accuracy checking method is to check it through a metal polygonal prism or a higher-precision encoder. These two methods have disadvantages such as difficult installation and debugging, complex structure, weak versatility, and low cost performance. To meet the requirements for encoder accuracy in modern technology, it is impossible to accurately check the accuracy of high-precision encoders. The accuracy checking device of the medium and small-sized high-precision encoder of the present invention adopts the laser double-frequency interference principle and the multi-tooth indexing disc technology to directly check the accuracy of the detected encoder. The detected encoder transmits the motion to the indexer loaded with multi-tooth indexing disc through a set of simple transmission mechanism. After the detected encoder finishes rotating, the multi-tooth indexing disc will rotate the detected encoder in the opposite direction The output rotation angle value, after that, the rotation error of the detected encoder can be obtained by laser marking the position of the reflector on the upper surface of the indexer.
Description
technical field [0001] The invention relates to a device for precision checking of small and medium-sized high-precision encoders through the principle of laser dual-frequency interference and multi-tooth indexing disc technology, and belongs to the technical field of conventional instrument precision checking. Background technique [0002] As an important sensing component of an angle measurement and control system, the encoder has been widely used in many fields due to its advantages of high resolution and strong anti-interference. However, with the continuous expansion of its application field and the continuous improvement of precision, higher requirements are put forward for its detection system. Due to the shortcomings of traditional encoder detection systems (metal polygon detection, high-precision encoder detection) such as difficult installation and debugging, complex structure, weak versatility, and low cost performance, the application of encoders in modern techno...
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IPC IPC(8): G01D18/00
Inventor 于正林于博丁红昌曹国华姜涛
Owner CHANGCHUN UNIV OF SCI & TECH