Spline Shaft Flexibility Test Method and Test Tool

Abstract

The invention belongs to the field of mechanical assembly, and relates to a spline shaft flexibility detection method and a detection tool, including: adding a counterweight to the extension of the spline shaft according to the maximum value of the friction torque of the product part to be detected, and when the product part to be detected rotates , the friction torque is formed between the spline shaft and the shell, and the counterweight generates a counterweight torque on the spline shaft, and the value of the friction torque is equal to the value of the counterweight torque; the direction of the friction torque is opposite to that of the counterweight torque; Under the premise that the center position of the key shaft remains unchanged, rotate the product part to be tested so that the spline shaft and the shell of the product part to be tested rotate relatively; if the counterweight is below the horizontal plane where the center line of the spline shaft is, the spline shaft The flexibility meets the requirements; if the counterweight is above the horizontal plane where the center line of the spline shaft is, the flexibility of the spline shaft does not meet the requirements. The invention provides a spline shaft flexibility detection method and a detection tool with simple detection method, accurate detection result and easy operation.

Description

technical field [0001] The invention belongs to the field of mechanical assembly, and relates to a spline shaft flexibility detection method and a detection tool. Background technique [0002] When testing the flexibility of the spline shaft, a maximum value of the friction torque will be given, as long as the measured friction torque value is not greater than the given value, it meets the requirements. The maximum value of friction torque given is very small, such as 0.004N·M. Generally, a torque wrench is used to measure the friction torque. However, the minimum scale of the torque wrench in the prior art is 0.1N·M, and the measurement accuracy is far higher than the upper limit of the maximum value of the friction torque during the flexibility test of the spline shaft, so the friction torque value cannot be measured. However, the investment required to order special friction torque testing equipment is too large, and it cannot meet the production needs under the conditi...

AI Technical Summary

Problems solved by technology

However, the minimum scale of the torque wrench in the prior art is 0.1N·M, and the measurement accuracy is much higher than the upper limit of the maximum value of the friction torque during the flexibility test of the spline shaft, so it is impossible to measure the friction torque value

However, the investment required to order special friction torque testing equipment is too large, and it cannot meet the production needs under the condition of a sharp increase in cost.

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