The gear material was sampled, and its chemical composition was analyzed by three testing institutions. The chemical composition index was shown in Table 1. The American standard trademark 3310 was found in the domestic and foreign steel grade manuals. Inspection organization C Si Mn P S Cu Ni Cr...
1. Small module gear processing method and its advantages and disadvantages At present, the common processing methods of small module gears can be roughly divided into two categories according to the gear tooth processing mode: (1) cutting; (2) near net shape processing. The above process method basically follows the...
At present, small module gears are widely used in high-precision instruments and instruments. The working performance and service life of instruments are determined by the accuracy of gears. Therefore, the detection of small module gear is very important. Compared with the detection of general gears, the detection of small...
With the rapid development of the forging industry, the industry has made great contributions to China’s scientific and technological development, economic construction and social progress. Forging technology has a huge market supply and demand in China, and the supply and demand groups in China’s forging market will develop towards...
It can be seen from the cross-section of the straight shaft that the cutting speed of the straight shaft tends to be faster than that of the neutral shaft, and the straight gear decreases first; When the thickness of material removal reaches 20mm, the decline speed of neutral shaft...
Before bevel gear cutting, the residual stress in the material is evenly distributed and balanced along the thickness direction of bevel gear blank. During the processing of bevel gear blank, the material of bevel gear blank is gradually removed, the original equilibrium stress state is broken, and the residual...
Surface coating and surface coating wear-resistant materials increase the wear resistance. For example, Eagle innovations has developed a new metal surface coating “e” – carbon coating, which can be coated on all base metal alloys, has good corrosion resistance, can form a whole with the base without breaking or...
The theoretical research of gear tribology focuses on gear elastic hydrodynamic lubrication (EHL), gear surface morphology, micro tribology and so on. (1) Tsinghua University, Shanghai Jiaotong University, Wuhan Institute of technology and Harbin Institute of technology have completed the research on EHL numerical solution and oil film thickness measurement....
In the process of helical gear turning, each tooth of the turning tool will go through a process from cutting into the workpiece to cutting out the workpiece. In this process, the cutting speed of the gear turning tool at the contact point is constantly changing. The cutting angle...
In tractor gear processing, the commonly used tools include tractor gear type tools and rack type tools. In the process of tractor gear cutting tool processing, the slotting tool for processing tractor gear is like an external gear with a blade. Its blank makes meshing movement with the tractor...