Measures to improve fatigue of hard tooth surface gear reducer

Reasons for fatigue damage of tooth surface gear reducers

 (1) Wrong selection of process equipment, thermal power cannot meet the requirements of the production process, resulting in large loads during actual operation, hidden defects are gradually exposed, resulting in the final gear Contact fatigue damage occurs, the rack peels off and breaks, and the equipment is scrapped. Therefore, the selection of hard tooth surface gear reducer must be careful. 

(2) Due to quality problems that occurred during the manufacturing process of the reducer. Measures to improve the fatigue of hard tooth surface gear reducer: (1) Adjust the reduction amount, reduce the load and eliminate low-temperature rolling, so as to ensure that the thermal power value of the reducer will not be reduced due to excessive rolling force. (2) Improve the environmental conditions of the reducer and use forced air blowing to reduce the oil temperature of the reducer body. 

(3) Negotiate with the manufacturer to change the material of the intermediate gear shaft from 20CrMnTi to 20CrMnMo to improve its comprehensive mechanical properties and extend its life. 

(4) Carefully maintain and operate, strengthen inspections, ensure the amount of lubricating and cooling oil, and replace the medium in time to ensure oil quality and performance. 

(5) It is planned to increase oil circulation facilities.

 (6) The external oil tank oil pump replaces the fixed oil in the small-capacity body oil pool with flowing oil to further reduce cooling. The oil injection improves the lubrication capacity and improves the contact state.