A Method for Eliminating the Errors Introduced by Standard Gears in Measuring Instruments for Double-side Meshing of Gears

Abstract

The invention provides a gear double-sided meshing measurement instrument and method for removing errors from used standard gear with the aim to increasing the measurement accuracy of a gear double-sided meshing measurement instrument. The instrument comprises a base, a computer, a motor, and a sliding plate wherein the sliding plate is arranged on the base through a guide rail. The top of the sliding plate is provided with a first positioning shaft in a rotation manner. The top of the sliding plate is provided with a grating sensor near the first positioning shaft. The output shaft of the motor vertically extends towards the upper part of the base and is connected with a second positioning shaft. The grating sensor is connected with the computer through a data acquisition card. The computer is connected with the motor through a driver. According to the method of the invention, a conjugated calibration gear, with the same accuracy level as the standard gear, is utilized to pre-measure the errors existing in the standard gear in itself, and then, computer control and an error processing and compensating method are used in which the errors of the standard gear in itself are adopted so that correction can be made to the measurement result with the consequence that an overall radial comprehensive error of the gear to be measured can be accurately obtained and therefore, the accuracy required on the standard gear in itself is reduced.

Description

technical field [0001] The invention relates to the technical field of gear precision measurement, in particular to a gear double-sided meshing measuring instrument and a method for eliminating errors introduced by standard gears used therein. Background technique [0002] With the improvement of industrial technology level, the transmission system has continuously improved the quality requirements of gear manufacturing. As the final inspection procedure of gear manufacturing quality, the gear double-sided meshing method has been more and more widely used in measuring the radial error of gears due to its advantages of simple equipment, fast measurement speed, and comprehensive reflection of gear manufacturing accuracy. [0003] Using the gear double-sided meshing measurement method to measure the comprehensive radial deviation of the gear, the main reason for the large dispersion of the measurement results is caused by the measurement principle. The standard stipulates that ...

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Problems solved by technology

However, the radial comprehensive deviation of the standard gear measured in this method is only the average value of the radial deviation of the standard gear on a limited number of sections, which cannot completely reflect the radial deviation of the standard gear during the entire meshing process, so it is difficult Virtually eliminate errors introduced by standard gears

[0005] It can be seen that when using the gear double-sided meshing measurement method to measure the gear radial comprehensive deviation, there are two main factors affecting the measurement accuracy: one is the measurement accuracy of the gear double-sided meshing measuring instrument used, and the traditional gear double-sided meshing measuring instrument It is relatively simple, and the measuring chain is short; the second is the structure and precision of the standard gear used, which is particularly important. It will reduce the final measurement accuracy. Therefore, the existing method can only ensure the accuracy of gear radial error measurement with the gear double-sided meshing measurement method by improving the manufacturing accuracy of the standard gear itself, but the manufacturing cost of high-precision standard gears is It is quite expensive, and there is no uniform standard for the design of standard gears at home and abroad. There are only some design principles recognized by the gear industry. For example, the measurement of double-sided meshing of gears requires that the standard The width is greater than the tooth width of the gear to be tested; the number of teeth of the standard gear is greater than that of the gear to be tested, etc., which causes problems such as increased cost of the standard gear, various types, low utilization rate of the instrument, serious waste, etc.

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