JP2535219B2 - Commutator cutting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application] The present invention relates to a commutator cutting machine for cutting a commutator portion of an armature.

<Prior art> Machine tools such as lathes and shapers generally perform machining by fixing the position of the work piece and moving the tool side. , A cutting depth setting function and a movement function in two axial directions must be added. It is customary to follow the same structure in a special dedicated machine such as a commutator cutting machine.

<Problems to be Solved by the Invention> However, in the above commutator cutting machine, if an attempt is made to impart a moving function in two axial directions to the tool support, it becomes difficult to secure the rigidity of the tool support. And the structure becomes complicated. Also, when trying to promote automation at a particularly high level, when setting the armature, which is the workpiece, on the support base, it is necessary to allow the blade support base to escape from the armature feed position sufficiently, which is space efficient. Tended to decrease.

In view of such problems of the prior art, a main object of the present invention is to provide a commutator cutting machine which can be simplified in structure, eliminate a factor of deterioration in accuracy, and can be configured compactly.

[Configuration of the Invention] <Means for Solving the Problems> According to the present invention, an object such as this is to provide an armature support base and a blade support base for circumferentially cutting the outer peripheral surface of an armature commutator. A commutator cutting machine having, wherein the armature support is capable of reciprocating linear movement only along a radial direction of the armature, and the blade support is provided on an axis of a rotating shaft of the armature. This is achieved by providing a commutator cutting machine characterized by being capable of reciprocating linear movement only along.

<Operation> In this way, since it is only necessary to give the blade support a moving function in the cutting feed direction, the rigidity of the blade support does not have to be reduced. Further, the work of setting the armature with respect to the armature support can be performed at a position sufficiently separated from the blade, and the armature support can be set close to the blade to set a desired cutting depth. it can.

<Embodiment> A preferred embodiment of the present invention will be described in detail below with reference to the accompanying drawings.

FIG. 1 schematically shows the whole armature cutting machine constructed according to the present invention. This armature cutting machine 1 includes a blade supporting device 2 for fixing a blade and moving the blade, and an armature supporting device 3 for supporting an armature as a workpiece and moving the armature. It consists of

A tool holder 5 as a tool support base for clamping the tool 4 is provided at the tip of the tool support device 2 so as to be horizontally movable via a known ball screw device 6. In addition, the ball screw device 6
Is driven by the servomotor 8 via the belt / pulley mechanism 7, and automatically determines the moving distance within a preset range based on the output value of the rotary encoder 9, and reciprocates linearly with respect to the bite holder 5. It is designed to give exercise.

The armature support device 3 has a second ball screw device 10 having a configuration basically similar to that of the blade support device 2, and is driven by a servo motor 12 via a belt / pulley mechanism 11 to drive the rotary device. Encoder 13 and tacho generator
Based on the output value of 14, the tool holder 5 can be moved linearly in a direction perpendicular to the feed axis of the bite holder 5, that is, in the vertical direction.

The armature support device 3 is provided with a V block 16 as an armature support base for supporting both ends of the armature 15 shaft, and an end stopper 17 for positioning the armature 15 such as a hydraulic cylinder. , The V-block 16 has its axial position regulated and the armature 15 supported by the flat belt
It is designed to rotate at 18.

 Next, the operating procedure of the above embodiment will be described.

First, the V block in a state where the armature 15 conveyed from the horizontal direction by a feeder (not shown) is lowered to the lowest position.
16 Place on top. Next, the V block 16 is raised, and when it reaches a predetermined height, the armature 15 is rotated, and the bite 4
The commutator portion 19 is cut while feeding. This time,
The cutting depth of the commutator portion 19 by the cutting tool 4 is determined by controlling the vertical position of the V block 16, that is, the feeding dimension of the ball screw device 10 based on the output value of the rotary encoder 13.

On the other hand, according to this device, the feed speed of the bite holder 5 and the V block 16 can be arbitrarily changed by the rotation speeds of the both servo motors 8 and 12. Therefore, the bite holder 5 can be moved at a high speed in the portion where the cutting is not performed, and the loss time can be suppressed to the minimum. At the same time
In the V block 16 as well, a portion that only delivers the armature 15 moves at a high speed to shorten the cycle time, and a portion that sets the cutting depth moves at a slow speed to ensure high accuracy.

[Effects of the Invention] As described above, according to the present invention, the armature support base moves in the radial direction of the commutator by providing both the blade support base and the armature support base with a moving function in only one axial direction. In the process of carrying out the process, from the delivery of the armature to the setting of the cutting depth, and by moving the blade support along the axial direction of the commutator, it is possible to perform the cutting work over the entire length of the commutator. Become. That is, by making the moving axes of the blade support and the armature support unidirectional respectively, the structure of this type of automatic commutator cutting machine is simplified and the rigidity of the moving mechanism is suppressed from decreasing. A great effect that accuracy can be maintained is obtained. Also,
As shown in the above embodiment, since the moving speed can be arbitrarily changed by using the servo motor, it is effective in shortening the cycle time, and a detector with a relatively high resolution such as a rotary encoder is used. Since it can be used, it is possible to easily set the cutting amount with high accuracy.

[Brief description of drawings]

 FIG. 1 is a schematic configuration diagram of the device of the present invention. 1 ... Armature cutting machine, 2 ... Blade support device 3 ... Armature support device, 4 ... Tool 5 ... Tool holder, 6 ... Ball screw device 7 ... Belt / pulley mechanism 8 ... Servo motor , 9 Rotary encoder 10 Ball screw device 11 Belt / pulley mechanism 12 Servo motor, 13 Rotary encoder 14 Tacho generator 15 Armature 16 V block 17 End Stopper, 18 …… flat belt 19 …… commutator part

Claims (1)

(57) [Claims] 1. A commutator cutting machine having an armature support and a blade support for cutting an outer peripheral surface of an armature commutator in a circumferential direction, wherein the armature support is the armature. The commutator cutting machine is capable of reciprocating linear movement only along the radial direction of, and the blade support can reciprocating linear movement only along the axis of the rotating shaft of the armature.