The comparative experimental study on the wear resistance of concave and smooth spur gears is carried out by using the spur gear fatigue wear tester; Through the measurement of surface shape parameters before and after spur gear test, the comparative analysis of tooth direction error and tooth shape error before and after pit type and smooth spur gear test is completed, and the advantages and disadvantages of wear resistance of pit type and smooth spur gear are analyzed qualitatively and quantitatively.
The bionic micro pit shape with certain pit diameter and spacing distribution is formed in the meshing area of spur gear tooth surface by using laser graphic engraving technology; The selection principle of bionic micro pit shape is: the bionic shape with the least wear in the model ring sample.
Using the spur gear fatigue wear tester, under the same test parameters, the comparative tests of wear resistance of automotive spur gears with smooth and concave bionic morphology were completed respectively.
The straight gear precision measuring instrument is used to measure the tooth direction error and tooth shape error of smooth and concave bionic automobile spur gear before and after the test, and the error curve and error value before and after the test are obtained.
The wear degree of automotive spur gears with smooth and concave bionic shape is qualitatively analyzed by comparing the patterns of tooth direction error and tooth shape error before and after the test; Through the comparison of tooth direction error and tooth shape error before and after the test, the wear law of automotive spur gears with smooth and concave bionic morphology is quantitatively analyzed.