| Bevel gears are used for transmitting the rotational motion of crossing or interleaving axes with the constant transmission ratio. Due to its performance,such as the big overlap coefficient, the high carrying capacity, the smooth transmission,spiral bevel gears are widely used in automotive, aircraft, ships and other industrial fields.So spiral bevel gears have become an indispensable transmission parts in modern machinery manufacturing.Currently, spiral bevel gears are mainly finished by the special machine tool. However, processing of large size and small-volume Gleason spiral bevel gear system, the restriction of the machine structure and size make it difficult to processing some big dimension gear pairs. And the high cost of purchasing special machine tool is not suitable for processing of large size and small-volume spiral bevel gear. Therefore, using general machine tool to process large size and small-volume Gleason spiral bevel gear system is a good choice.This paper establish the system of general machine tool manufacturing spiral bevel gear, in order to solve the problems of manufacturing large size and small-volume spiral bevel gear. In the process of general machine tool cutting tooth, tool path planning and cutter position are determined by analyzing the traditional processing methods. According to the established mathematical model of the tooth surface, tool center space position has been derived during processing of gear surface. The tool interference and reduce the tooth surface roughness and a series of problems are solved. The possibility of finger-cutter milling spiral bevel gears are proved by the mathematical proof of general machine tool processing. The results of this paper is different from the traditional method of milling spiral bevel gears, it make the processing method of spiral bevel gears with a new angle to achieve.And this manufacturing method is an economic,efficient and quick response for some specific applications. |
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