A Technological Solution to Reduce Tooth Pitch Errors of Spiral Bevel Gears Machined on CNC Generating Machine Klingelnberg C27

Tooth pick error is an important criterion to evaluate the quality of spiral bevel gear and directly affects the noise and vibration of the gear transmission. In this study, the spiral bevel gears were machined on the CNC generating machine Klingelnberg C27 and measured on the coordinate measuring machine (CMM) Klingelnberg P26 to evaluate the tooth pitch errors. Theoretical research on the causes of machining errors and analysis of measurement results showed that the critical cause of tooth pitch error is the error of the positioning and clamping surfaces. This study proposes a technological solution to reduce tooth pitch error by improving the quality of the positioning and clamping surfaces by grinding. Experimental results show that after grinding to improve the quality of the positioning and clamping surfaces, the tooth pitch error reaches an accuracy level from DIN 7 to DIN 4. The research results contribute to the quality control of spiral bevel gear machining on the Klingelnberg C27 CNC generator.