Yancheng XINLAN Precision Machinery Co., Ltd.

The external gear of the gearbox generally adopts the carburizing quenching gear grinding process.The introduction of a large number of high-efficiency and high-precision CNC forming gear grinding machines has made China's foreign gear finishing level not too far behind that of foreign countries, and there is no technical difficulty in reaching the level 19073 precision stipulated by the 6006 standard and the 5 standard.However, there is still a gap between China and foreign advanced technologies in terms of heat treatment deformation control, effective layer depth control, tooth surface grinding and tempering control, and gear tooth modification technology.

Due to the large size of the gearbox ring gear and high machining accuracy requirements, my country's internal gear ring manufacturing technology is far behind the international advanced level, which is mainly reflected in the tooth-making processing and heat treatment deformation control of helical internal gears.

The machining accuracy of the box, planet carrier, input shaft and other structural parts has a very important impact on the meshing quality of the gear transmission and the life of the bearing. The quality of the assembly also determines the life and reliability of the wind power gearbox. .In terms of the processing and assembly precision of structural parts, my country recognizes that there is a certain gap between the level of equipment and the advanced level of foreign countries.The acquisition of high-quality and high-reliability wind power gearboxes, in addition to advanced design technology and necessary manufacturing equipment support, is inseparable from strict quality control in every link of the manufacturing process. The 6006 standard provides strict and detailed regulations on the quality assurance of gearboxes.