Based on the EHL theory, a new gear design theory and method non Hertz contact gear design theory and method is proposed. The cylindrical gear design formula based on the new method is given. The new design theory and method are tested by a large number of engineering examples
1) The theory and method of non Hertz contact gear design can theoretically ensure that the designed gear meets the dual important requirements of contact strength and EHL.
2) A large number of engineering examples show that the theory and method of non Hertz contact gear design proposed in this paper are correct and practical, and can be used in practical engineering design to meet the needs of engineering practice.
3) For the design of high-speed and heavy-duty gears, the theory and method of non Hertz contact gear design proposed in this paper has very important engineering practical value and significance.