Zero-drive chain digital control gear hobbing machine

Abstract

The invention discloses a numberical control hobbing machine with zero transmission, which comprises a machine body, a main shaft system, a hobbing cutter feeding and angle adjusting system and a control system; the main shaft system comprises a functional part of a hobbing cutter main shaft and a functional part of work-piece main shaft part; the functional part of the hobbing cutter main shaft is an integration of the rotator of the servo motor I and the hobbing cutter main shaft, and the functional part of the work-piece main shaft is an integration of the rotator of the servo motor II and the work-piece main shaft. The numberical control hobbing machine of the invention can remove the manufacturing errors of transmission component of generating motion and the influence on gear process caused by space and assembly error, is able to greatly improve process accuracy and process speed of machine tool. The numberical control hobbing machine of the invention has simple structure, is able to improve overall rigidity of machine tool, solves the wearing problem caused by mechanical transmission chain, improves the retentivity of precision, causes the hobbing speed to be higher than the numberical control hobbing machine with traditional structure, shortens milling time as well as based on which, the hobbing machine is provided with the machine tool conditions required by dry type hobbing through adopting a series of matching technical measures.

Description

technical field [0001] The invention relates to a gear hobbing machine, in particular to a zero-transmission numerical control gear hobbing machine. Background technique [0002] Gears are the most important mechanical transmission components and are widely used in various types of machinery, while gear hobbing is an important means in gear processing. With the development of science and technology, higher and higher requirements are put forward for modern machine tools, which are mainly reflected in high-efficiency, high-precision and environmentally friendly processing. Ordinary CNC gear hobbing machine is difficult to meet the above requirements due to its principle and structural limitations. Gear hobbing is to process gears with a hob on a gear hobbing machine; the principle of gear hobbing is that the hob and the tooth blank simulate a pair of helical gears for meshing motion. Gear hobbing machining has the advantages of high cutting speed, straight teeth, helical cy...

AI Technical Summary

Problems solved by technology

Gear hobbing machine is one of the machine tools with the most complex transmission relationship. Although the transmission chain has been greatly shortened by numerical control technology in the prior art hobbing machine, part of the mechanical transmission chain is still retained in the hobbing generating motion. These mechanical transmission links not only affect Machining accuracy also affects the maintenance of machine tool accuracy; more critically, the reserved mechanical transmission chain has become a bottleneck for increasing the hobbing speed, which limits the implementation of a more environmentally friendly dry hobbing process, because high speed is dry hobbing One of the prerequisites for gear hobbing

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