JPH03216286A - Cutting device for pipe material - Google Patents

Abstract

PURPOSE:To cut a cut surface shape of the pipe material into the optional curved surface by synchronizing vertical moving of a work fixing jig with rotation of the wheel to perform cutting of the pipe material to rotate with a wheel. CONSTITUTION:The work fixing jig 1 is fitted to an articulated robot 11 controlled by a control panel and the work fixing jig 1 is moved vertically in synchronization with rotation of the wheel 2. Plasma or a laser beam cutting device 12 is arranged on one side of the tip of the pipe material 6. While the part in opposition to the plasma or laser beam cutting device 12 of the pipe material 6 being cut, the pipe material 6 is moved vertically while being rotated by the rotation of the wheel 2 and the vertical movement of the work fixing jig 1, by which the cut surface shape of the pipe material 6 can be cut into the curved surface. The pipe material can be then cut into the cut surface shape of the optional curved surface by controlling the vertical movement of the work fixing jig 1.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a cutting device for pipe materials such as steel pipes or light alloy pipes.

[Conventional technology]

Frames for motorcycles and the like are often made by selecting pipe materials such as steel pipes of an appropriate thickness, cutting them to a predetermined length, bending them, etc., and joining them together by welding. In that case,
As shown in Fig. 4, pipe material B is placed on the circumferential surface of pipe material A.
The end faces of pipe material C may be butted and welded.

In this case, the end surfaces of the pipe material B and the pipe material C need to be curved so as to follow the circumferential surface of the pipe material A, as shown in FIG. For this purpose, as shown in FIG. 6, the end faces of the pipe materials B and C are cut with a cutter D to form curved surfaces. In addition, a special cutting cutter may be provided and a press machine may be used to cut the material into a curved surface.

[Problem to be solved by the invention]

Cutting the end face of pipe material into a curved surface with a cutter requires processing time and is low in productivity. Furthermore, if there is a cutting angle, pre-processing and cutting are required, which is time-consuming. If the pipe is cut using a press machine with a special cutter, a special cutter is required, the shape of the pipe material may be deformed, the accuracy is poor, and there is a limit to the cutting angle.

In view of this, an object of the present invention is to provide a pipe material cutting device that can efficiently cut the pipe material into an arbitrary cut shape in a short time while moving the pipe material using a plasma or laser cutting machine.

[Means to solve the problem]

In order to achieve the above object, the pipe material cutting device of the present invention rotatably pivots a wheel with a clamp attached to a workpiece fixing jig, inserts the tip of the pipe material into the center hole of the wheel, and clamps the pipe material. A plasma or laser cutting machine is installed on one side of the tip of the pipe material, and the workpiece fixing jig is synchronized and moved up and down while rotating the wheel.
The reason is that the pipe material can be cut into any shape.

[Effect]

By moving the workpiece fixing jig up and down in synchronization with the rotation of the wheel, the part of the pipe facing the plasma or laser cutting machine can be moved up and down while rotating. By controlling the width of movement, the pipe material can be cut into any curved surface.

〔Example〕

Embodiments of the present invention will be described below with reference to FIGS. 1 to 3.

A wheel 2 is rotatably attached to a workpiece fixing jig 1 with a bearing 3. The wheel 2 is provided with a central hole 4, and a clamp 5 is attached to the upper side. A pipe material 6 to be cut is inserted into the central hole 4 and can be fixed with a clamp 5. The clamp 5 can be tightened with an air cylinder 7 or a nut runner. The wheel 2 is connected to a driving wheel 9 of a motor 8 by a timing belt 10 or the like and rotated. The workpiece fixing jig 1 is
It is attached to an articulated robot 11 controlled by a control panel, and moves the workpiece fixing jig 1 up and down in synchronization with the rotation of the wheel 2. A plasma or laser cutting machine 12 is placed on one side of the tip of the pipe material 6. While cutting the portion of the pipe material 6 facing the plasma or laser cutting machine 12,
By rotating the wheel 2 and moving the workpiece fixing jig 1 up and down, the pipe material 6 is moved up and down while being rotated, so that the cut surface shape of the pipe material 6 can be cut into a curved surface. By controlling the vertical movement of the workpiece fixing jig 1, the workpiece can be cut into any curved surface shape.

〔Effect of the invention〕

As explained above, since the present invention is configured as described above, the workpiece fixing jig can be moved up and down while the pipe material fixed to the wheel rotatably attached to the workpiece fixing jig is rotated by the wheel. By moving it, the position where the pipe material is cut by the plasma or laser cutting machine can be changed, and the cut surface can be curved. Furthermore, by controlling the vertical movement width of the workpiece fixing jig, it is possible to cut into any curved surface. In this way, pipe material can be cut into any curved surface in a short time, efficiently and at low cost without requiring a special cutter.

[Brief explanation of drawings]

1 to 3 show one embodiment of the present invention, in which FIG. 1 is an overall perspective view, FIG. 2 is a plan view of the main part, FIG. 3 is a partial longitudinal sectional side view of the main part, and FIG. FIG. 5 is a side view showing an example of welding a pipe material, FIG. 5 is a perspective view showing an example of a welded end surface of a pipe material, and FIG. 6 is a side view showing an example of conventional cutting of a pipe material. 1... Work fixing jig, 2... Wheel, 4...
Center hole, 5... Clamp, 6... Pipe material, 12.
...Plasma or laser cutting machine.

Claims (1)

[Claims] A wheel with a clamp attached to the work fixing jig is rotatably mounted, the tip of the pipe material is inserted into the center hole of the wheel and fixed with a clamp, and a plasma or laser cutting machine is installed on one side of the tip of the pipe material. A pipe material cutting device characterized in that a workpiece fixing jig is synchronized and moved up and down while rotating a wheel, and the pipe material is cut into an arbitrary cut surface shape.