Gear as the core mechanical foundation. Despite the high requirements for the manufacturing and installation accuracy of gears, with the development of industrial modernization and the rapid maturity of gear manufacturing technology, the product quality and machining accuracy of gears are constantly improving. The high requirement of gear manufacturing and installation accuracy is no longer the main factor affecting the use of gears. On the contrary, with the excellent transmission performance of gear and the diversity of application environment, new requirements are constantly put forward for the design and processing of gear mechanism. Under the ideal processing conditions, that is, without considering any external error in the processing, the tooth profile obtained by hobbing spur gear has no error in theory. However, under the actual processing conditions, the hobbing error of spur gear is inevitable.
In order to consider the change of installation axis intersection angle error and installation center distance of spur gear hob, the application test of the proposed digital simulation method of spur gear hobbing process is carried out. The simulation test of positive and negative modified gears is realized by increasing or reducing the center distance between spur gear hob and gear, The influence of the installation axis intersection angle error of spur gear hob on the tooth profile is analyzed by simulation.
This paper mainly applies the proposed digital simulation method of spur gear hobbing process, and studies the simulation test of positive and negative modified gears by increasing or reducing the center distance between spur gear hob and gear. Through simulation, the influence of the installation axis intersection angle error of different spur gear hobs on the machined gear profile is analyzed, and the correctness of the simulation results is verified. Based on the proposed simulation algorithm of spur gear hobbing model, we can not only see the influence trend of different axis intersection angle errors on the tooth profile, but also quantitatively obtain the size of tooth profile error.