Tool rest structure of numerical control gear shaping machine

Abstract

The invention relates to a tool rest structure of a numerical control gear shaping machine. The tool rest structure comprises a tool rest body (13). The rear end of the tool rest body (13) is provided with a crank throw (1), and the front end of the tool rest body (13) is provided with a sliding bearing (19) which is connected with a main shaft (14). A lower bearing (15) is arranged below the main shaft, and drives the crank throw (1) through hydraulic pressure. The crank throw (1) is connected with an adjusting threaded rod (2), the lower end of the adjusting threaded rod (2) is provided with a ball head (5) which is located in a cavity. The cavity is fixed to a movable guide rail (7) which is closely matched with a fixed guide rail (8) and is adjusted through an inserting strip (16). A worm gear guide sleeve (9) and a worm gear sleeve (11) are sequentially arranged outside the fixed guide rail (8), wherein a worm gear (10) is arranged on the worm gear guide sleeve (9), and the lubrication state of the worm gear (10) can be seen through an observation window (12). The movable guide rail (7) is connected with the main shaft (14) and is adjacent to an oil pan (6). The tool rest structure is simple in structure and reasonable in design; the up stroke and the down stroke are long in the knife shaft return process; the tool rest structure has adjustability, and is sufficient in cutting force and small in parking inertia, and rotating precision of a knife shaft is high.

Description

【Technical field】 [0001] The invention relates to a tool holder mechanism of a numerically controlled gear shaping machine, which belongs to the technical field of gear processing. 【Background technique】 [0002] As we all know, the existing gear shaping machine is fixed on the column of the CNC gear shaping machine. When shaping the spur gear, the reciprocating motion of the tool shaft in the tool holder provides the cutting motion of the gear shaping. During the cutting process, the tool shaft always follows a certain The law of uniform rotation, while the stroke length and straightness of the cutter shaft's reciprocating motion, cutting force, response speed and positioning accuracy of the rotary motion are all prerequisites to ensure the overall machining accuracy of the CNC gear shaping machine. At the same time, during the return process of the cutter shaft, The up and down strokes are relatively short and cannot be adjusted, the cutting force cannot meet the existing ...

AI Technical Summary

Problems solved by technology

[0002] As we all know, the existing gear shaping machine is fixed on the column of the CNC gear shaping machine. When shaping the spur gear, the reciprocating motion of the tool shaft in the tool holder provides the cutting motion of the gear shaping. During the cutting process, the tool shaft always follows a certain The law of uniform rotation, while the stroke length and straightness of the cutter shaft's reciprocating motion, cutting force, response speed and positioning accuracy of the rotary motion are all prerequisites for ensuring the overall machining accuracy of the CNC gear shaping machine. At the same time, during the return process of the cutter shaft, The up and down strokes are relatively short and cannot be adjusted, the cutting force cannot meet the existing technical needs, and the inertia is large during the working process

[0003] Therefore, the existing CNC gear shaping machine tool holder not only has complex shapes, but also has great difficulty in processing parts, and the up and down strokes are short and cannot be adjusted, which is not systematic, and the cutting force is insufficient, the rotation accuracy of the tool shaft is low, and the parking inertia is large.

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