Angular indexing device for machine tool

Abstract

An angular indexing device for a machine tool, in which damage to a cable is prevented as much as possible and in which arrangement of cables for a motor does not involve an increase in the outer diameter of a component incorporating the motor. The angular indexing device for a machine tool has a rotating shaft (40) to which a member (11) to be rotated is fixed, a housing (30) surrounding the outer periphery of the rotating shaft (40) and attached to and detached from a machine tool body, bearings (B1, B2) placed between the housing (30) and the rotating shaft (40), and drive means placed between the housing (30) and the rotating shaft (40) and rotating the rotating shaft (40) to index angular positions. Drive motors (M1, M2, M3) are used as the drive means, and the motors (M1, M2, M3) have motor rotors and motor stators arranged in the housing (30) so as to be concentric with the rotating shaft (40). In the housing (30) inside a thick wall portion of its outer tube surrounding the outer periphery of the rotating shaft (40), there are formed wiring holes (H1, H2, H3) running along the direction of the axis of the rotating shaft (40). At least an upstream portion, relative to the cable lead-out direction, of the entire length of each cable (c11, c21, c31) connected to the corresponding drive motor (M1, M2, M3) is inserted through the wiring hole (H1, H2, H3).

Description

technical field [0001] The present invention relates to an indexing device for a working machine, and more specifically, relates to an indexing device used in a five-axis processing machine (a processing machine capable of controlling five axes at the same time), a rotary table device, and the like. Background technique [0002] As an example of an indexing device for machine tools, as a simultaneous five-axis control processing machine, a rotary drive motor for indexing the angle is built into the head support part, and a vertical In the lower part of the head, the vertical tool spindle is rotatably supported in the head in a so-called side-by-side support form. In addition, when the rotary drive motor is composed of a rotor and a stator, that is, a single (one) use What is commonly called a DD motor (direct drive motor) is well known (Patent Document 1). [0003] Also, as another example of an indexing device for a machine tool, as a rotary index table, a shaft to which a...

AI Technical Summary

Problems solved by technology

Because when the indexing device is installed at the predetermined installation position of the existing machine tool, if the outer diameter of the housing is larger than the current situation, it cannot be installed in this state on the existing machine tool, and the machine tool itself must be modified.

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