Indexing device for a machine tool

Abstract

The invention discloses an indexing device of a machine tool. The indexing device of the machine tool comprises a servo motor, an output shaft and a hollow shaft seat; the servo motor is used for providing an indexing power source, the servo motor is connected with an input shaft, a speed reducer is connected between the servo motor and the input shaft, the servo motor is used for driving the speed reducer and the input shaft to rotate; a connecting seat is arranged at one end, away from the input shaft, of the speed reducer, the middle of the connecting seat is opened for connecting the speedreducer with the servo motor; the output shaft is used for outputting the indexing power, the output shaft is connected to the input shaft, the output shaft can rotate along with the input shaft; andthe output shaft is arranged in the inner part of the shaft seat, and the shaft seat is used for supporting the output shaft. The indexing device of the machine tool at least has the following technical effects that the output shaft is connected with the input shaft and installed in the shaft seat, the input shaft is connected with the servo motor, the servo motor drives the output shaft and theinput shaft to achieve indexing, the structure is compact, a mechanical transmission chain is shortened, mechanical transmission gaps and losses are reduced, the indexing precision is high, and machining and assembling are facilitated.

Description

technical field [0001] The invention relates to the field of machine tool components, in particular to an indexing device for a machine tool. Background technique [0002] In the process of machine tool processing, there are often some workpieces that require the processing of spiral external or internal teeth, a group of surfaces that are evenly distributed at a certain angle or a certain distance, and have the same shape and size. For example, broaching and hobbing need to cooperate with the tool shaft to complete a section Processing of spiral curves, drilling a group of equally divided holes, milling a group of equally divided slots or processing polyhedrons, etc. In order to complete this kind of equal division surface processing in one clamping of the workpiece, it is required that after each surface is processed, the fixture and the workpiece should be rotated through a certain angle or moved over a certain distance, so as to achieve the above graduation requirements....

AI Technical Summary

Problems solved by technology

Due to the characteristics of the worm gear pair, the backlash of the tooth side cannot be eliminated when the worm gear is matched, and it is not allowed to be completely eliminated, so that the high-precision indexing requirements of the current actual process requirements cannot be met due to the existence of the tooth side backlash when the rotating shaft is indexed. Moreover, the processing and assembly of high-precision worm gear pairs are very difficult.

The structure of the worm gear pair is complex, and its large volume occupies the overall space of the equipment, so it is not suitable for layout

The use conditions are harsh, regular maintenance is required, and the cost of use is increased

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