Gear shaving machining tooth form modification method

Abstract

Provided is a gear shaving machining tooth form modification method. The method is characterized in that reverse cutting is conducted on a gear shaving cutter by means of a diamond dressing wheel, the tooth surface of the gear shaving cutter is concave, a gear is machined through the gear shaving cutter with the concave tooth surface, the concave phenomenon can be eliminated; the form modification comprises the steps that 1, the diamond dressing wheel is customized, the number of teeth of the dressing wheel is selected according to the specific mode number and tooth number of the gear product; 2, the dressing wheel is installed on a gear shaving machine to replace a workpiece gear, the dressing wheel is subjected to cutting machining by using the gear shaving cutter needing to be modified, and the tooth form surrounding the gear shaving cutter reference circle is concave; 3, nitridation treatment is conducted on the modified gear shaving cutter; the shape of the diamond dressing wheel is the same as that of the product gear, and the gear tooth surface of the customized diamond dressing wheel is coated with a diamond particle layer. By machining the gear through the gear shaving cutter modified through the method, the concave phenomenon in the tooth form obtained after gear shaving machining can be effectively solved, the yield of gear parts is guaranteed, and the use efficiency of the gear shaving cutter is improved.

Description

technical field [0001] The invention belongs to the field of mechanical equipment manufacturing, and relates to a method for modifying the tooth root of an involute gear for trimming a shaving cutter. Background technique [0002] On the shaving machine tool, using a shaving cutter to shave the involute surface of the workpiece gear tooth is a common method for gear surface finishing. The disc shaving cutter is shaped like a gear, see Figure 4 , can be regarded as a helical gear meshing between the shaving cutter and the workpiece without backlash. The disc-shaped shaving cutter can be regarded as a cylindrical gear. Between the two centers on the machine table, the workpiece can rotate freely. Theoretically speaking, the disc shaving cutter and the workpiece gear belong to helical gear meshing, and the tooth surfaces of the two gears are in point contact. With the rotation of the gear, the contact point moves along the tooth surface inclined to the tooth end surface, Whil...

AI Technical Summary

Problems solved by technology

[0004] The concave of the shaving tooth profile is one of the main precision faults in the shaving process, see Figure 5 , is a problem often encountered in gear shaving processing, which makes the meshing stability of the gears worse, and the meshing noise becomes larger, which seriously affects the performance of the gears, and even affects the performance of the whole machine

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