General situation of high precision spiral bevel gear

one, Overview of High Precision Spiral Bevel Gears

Gears are important transmission components of machines or components, and are widely used in mechanical transmission. The gear industry is mainly divided into vehicle gears and industrial gears, among which the vehicle gear market accounts for about 62% of the entire gear market. Since the gear industry is closely related to the downstream automobile and engineering manufacturing industries, the gear industry has been affected by the downstream market in recent years, and its output has fluctuated greatly. In 2019, China's gear output reached 2.37 million tons, a year-on-year increase of 8.7%

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At present, my country's high-precision spiral bevel gear industry is in the development mode of insufficient production capacity and overcapacity of low-end and medium-end products, and low-end and medium-end products account for about 80%. According to the precision, there are 12 grades of gears, among which grade 0 is high-precision gears, grades 0-3 are mainly standard measurement gears, grades 4-6 are high-precision transmission gears, grades 7-8 are ordinary transmission gears, grades 9-12 Stage is the low gear. Different gear application fields lead to different gear precision requirements. For example, the precision requirements of passenger cars in China are mostly 4-6 grades, while the precision requirements of manual transmissions, commercial vehicles, agricultural machinery and construction machinery are about 7-8 grades. In order to improve the precision of the gear, it is necessary to adopt the precision forging manufacturing process. The entry barriers of the precision forging gear industry are relatively high, and the identification time and cycle of products and suppliers are relatively long. In the short term, there will not be a large number of enterprises entering the segmented market.