Chinese Professional Tungsten Fun Facts - New Shape Tungsten Carbide Tamping Tine Tools for Railway Industry – Zhongfu

Shaving knife
In order to reduce the cutting load of each tooth, the number of teeth of the gear shaving cutter is large, and the prime number is generally used to avoid a common factor with the number of teeth of the gear to be cut, otherwise the error of the gear shaving cutter will be copied to the gear to be processed. According to international standards, the precision of gear shaving cutters has three types: AA, A and B. In actual production, the gear tooth profile shaving with the correct involute tooth profile shaving cutter often deviates from the correct involute line near the pitch circle of the gear, and is recessed inward, with a deviation of about 0.01 to 0.03 mm. The tooth profile deviation of spur gears is larger than that of helical gears. In order to get the correct involute tooth profile of the workpiece, the tooth profile of the shaving cutter should be corrected. In mass production, the tooth profile correction curve of the shaving cutter is determined by experimental methods.