JP2018187644A - Form rolling machine and form rolling method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a form rolling machine capable of highly accurately controlling a phase error in a rotation direction at each form rolling portion when performing the form rolling of two or more portions with respect to a shaft like component, and to provide a form rolling method using the form rolling machine.SOLUTION: A form rolling machine includes: one set of component support means 2, 12 which support both ends of a shaft-like component W; one set of flat dices 3, 13 for form rolling which perform form rolling for the shaft-like component W; one set of dice moving means 4, 14 and one set of ball screws 5, 15 which move the one set of the flat dices 3, 13 for the form rolling; and one set of NC servo motor 6, 16 for ball screw control which electrically control them. Component fixing means 7 which suppresses rotation in a circumferential direction of the shaft-like component during a form rolling process and an NC motor servo motor 8 for shaft-like component rotation control which electrically controls rotation of the shaft-like component W during the form rolling are provided at the component support means 2 of at least either one set of component support means 2, 12.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a rolling machine that performs a rolling process on a peripheral part of a shaft-shaped part using a pair of rolling flat dies, and a rolling process method using the same.

  Conventionally, in a rolling machine that performs rolling using a set of rolling dies on the outer peripheral surface of a shaft-like part such as a shaft, a set of rolling dies is accurately controlled by an NC servo motor. It was well controlled and rolled shaft parts.

  In addition to the structure described above, Patent Document 1 discloses a rolling machine provided with a speed control motor at a support portion of the shaft-shaped component in order to control the rotation of the shaft-shaped component during the rolling process. . With such a configuration, the rotational (circumferential) speed of the shaft-shaped part and the moving speed of a set of rolling flat dies can be controlled synchronously in the rolling process. For this reason, the rolling accuracy of the shaft-like component can be improved.

JP 7-124675 A

  However, the rolling machine disclosed in Patent Document 1 has a problem that when two or more rolling processes are performed on a shaft-shaped part, an error occurs in the phase in the rotational direction at each rolling position.

  Therefore, in the present invention, it is an object to provide a rolling machine capable of controlling the phase error in the rotational direction at each rolling processing location with high accuracy when performing rolling processing at two or more locations on the shaft-shaped part. To do.

In order to solve the above-described problems, the rolling machine of the present invention includes a set of component support means for supporting both ends of a shaft-shaped component, and a set of rolling flats for performing a rolling process on the shaft-shaped component. A die, a set of rolling flat dies, a set of die moving means that moves in the vertical direction, a set of ball screws that drive the set of die moving means, and a set of ball screws are electrically connected And a set of ball servo control NC servomotors, wherein at least one of the set of component support means includes the shaft-like component during the rolling process. A component fixing means for suppressing rotation in the circumferential direction of the shaft and an NC servo motor for controlling the rotation of the shaft-shaped component that electrically controls the rotation of the shaft-shaped component during the rolling process.

As for the rolling method using the above-mentioned rolling machine, after fixing the shaft-like component (work) by the component fixing means, a set of NC servo motor for ball screw control and NC for shaft-like component rotation control A rolling process method that performs rolling with a pair of rolling flat dies by synchronously controlling the servo motor.

In the rolling machine of the present invention, in the rolling processing of a shaft-shaped component, the rotation of the coaxial component in the circumferential direction is suppressed by the component fixing device provided in the component support device, while the NC servomotor provided in the component support device is coaxial. The rotation of the parts can be controlled electrically. For this reason, when rolling a shaft-shaped part, the NC servo motor provided for each of the ball screw and the component support means is rotated synchronously, so that the shaft-shaped part does not slide or idle at the support location. Rolling process can be performed according to the movement of flat dies. Therefore, the rolling machine of the present invention has an effect that the phase error in the rotational direction at each rolling processing portion can be controlled with high accuracy when performing rolling processing at two or more locations on the shaft-shaped part.

The schematic diagram of the rolling machine 1 of embodiment of this invention is shown. The arrow view from A direction of the rolling machine 1 shown in FIG. 1 is shown.

An example of an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a schematic view of a rolling machine 1 according to an embodiment of the present invention, and FIG. 2 is an arrow view from the A direction of the rolling machine 1 shown in FIG. As shown in FIG. 1, the rolling machine 1 of the present invention supports both ends (both end surfaces) of a shaft-shaped component W by a set of component support means 2 and 12. Further, a component that suppresses rotation in the circumferential direction of the shaft-shaped component W during rolling by at least one of the pair of component support means 2 and 12 (part support means 2 in the form shown in FIG. 1). A fixing means 7 is provided.

By fixing the shaft-shaped component W by using the component fixing means 7, slippage during the rolling process can be prevented, and positional deviation during the rolling process can be suppressed. Further, the component support means 2 is also provided with a shaft-shaped component rotation control NC servo motor 8 for electrically controlling the rotation of the shaft-shaped component W during the rolling process. This is provided for the purpose of eliminating the rotational phase error of the shaft-like component W by performing synchronous control with NC servomotors 6 and 16 for ball screw control described later.

As another configuration of the rolling machine 1, there is a set of flat rolling dies 3 and 13 that perform rolling processing on the shaft-shaped part W, and the set of rolling flat dies 3 and 13. There is a set of dice moving means 4 and 14 which are attached and moved in the vertical direction. Also, a set of ball screws 5 and 15 for driving the set of die moving means 4 and 14 and a set of ball servo control NC servo motors 6 for electrically controlling the set of ball screws 5 and 15. 16 are also provided in the rolling machine 1 of the present invention.

  Next, a rolling method using the above rolling machine 1 will be described. First, the shaft-shaped component W is fixed by the component fixing means 7. Thereafter, the pair of rolling dies 3 and 13 are moved in the vertical direction while the pair of ball servo control NC servomotors 6 and 16 and the shaft-shaped component rotation control NC servomotor 8 are synchronously controlled. Rolling process.

  Immediately before the rolling flat dies 3 and 13 begin to bite into the shaft-shaped component W (start rolling), the rotary encoder built in the shaft-shaped component rotation control NC servomotor 8 is used to rotate the shaft-shaped component W. Correct the rotational position. That is, when two or more spline processing (rolling processing) is performed on the shaft-shaped part W, the first (first) spline processing is performed, and then the second (second) spline processing. When performing, the rotation phase of the machining position is secured by rotating the shaft-shaped component W.

  Therefore, by using the rolling machine and rolling method of the present invention, when the rolling process is performed at two or more places on the shaft-shaped part, the phase error in the rotational direction at each rolling process place is controlled with high accuracy. (Each phase of all machining positions is aligned).

DESCRIPTION OF SYMBOLS 1 Rolling machine 2, 12 Component support means 3, 13 Rolling flat dies 4, 14 Die moving means 5, 15 Ball screw 6, 16 Ball screw control NC servo motor 7 Component fixing means 8 For axial component rotation control NC servo motor W Shaft-shaped parts

Claims (2)

A set of component support means for supporting both ends of the shaft-shaped component;
A set of rolling flat dies for rolling the shaft-shaped part;
A set of die moving means for attaching the set of rolling flat dies and moving in the vertical direction;
A set of ball screws for driving the set of die moving means;
A set of ball screw control NC servo motors for electrically controlling the set of ball screws;
A rolling machine having
In at least any one of the set of component support means,
A component fixing means for suppressing rotation of the shaft-shaped component in the circumferential direction during the rolling process and an NC servo motor for shaft-shaped component rotation control for electrically controlling the rotation of the shaft-shaped component during the rolling process are provided. Rolling machine characterized by that. A rolling method using the rolling machine according to claim 1,
After fixing the shaft-shaped component by the component fixing means,
Rolling processing is performed by the set of rolling flat dies by synchronously controlling the set of ball screw control NC servo motors and the shaft-shaped component rotation control NC servo motor. Manufacturing method.

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