JPH0641794Y2 - Friction welding machine equipped with automatic tool for discharging inner burr cutting waste - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a friction welding machine equipped with an automatic tool for discharging inner burr cutting chips.

(Prior Art) Conventional cutting of inner burrs is performed only by a cutting blade, and no consideration is given to the processing of cutting chips.

(Problems to be solved by the invention) Therefore, although the cutting waste is easily discharged when the pressure contact pipe is short, there is a problem that it takes a long time to discharge the cutting waste and sometimes remains.

In view of this, it is an object of the present invention to provide a friction welding machine equipped with an automatic tool for discharging internal debris that can automatically discharge cutting chips by attaching a discharging tool to the tip of a blade holder. .

(Means for Solving the Problems) In order to solve the above problems, the present invention bends the outer peripheral edge toward the blade holder so that the cross section has a dogleg shape, and the bending angle of the bent portion is 100 to 135 °. A thin circular metal plate that is formed and has a large number of slits in the bent outer peripheral portion in the radial direction, and a discharge tool that comes into contact with a flexible pressure contact tube is fixed to the outer circumference. The friction welding machine is provided with an automatic tool for discharging inner burr cutting chips, which is attached via a shaft to the tip of a blade holder to which is fixed.

(Operation) In the present invention, when the pressure welding pipe is pulled out after the inner burr cutting work is finished, the cutting dust comes into contact with the discharge tool and stays there, and when the pressure welding pipe is completely withdrawn, the cutting dust is removed from the end. Ejected automatically.

(Embodiment) Hereinafter, the present invention will be specifically described based on an embodiment shown in the drawings.

FIG. 1 is a sectional view of a friction welding machine equipped with an automatic tool for discharging inner burr cutting waste, showing an embodiment of the present invention, FIG. 2 is a longitudinal sectional view of essential parts, and FIG. 3 is a partial front view. FIG. 4 is a perspective view of a part of the discharging tool.

In the figure, 1 is a pressure welding tube which is pressed against each other, and 2 is an elbow type pressure welding tube.

Reference numeral 3 denotes a disc for supporting the ejector, which is inserted through a tip screw portion 6 of a shaft 5 fixed to the center of the blade holder 4, tightened with a nut 7 (see FIG. 2), and fixed to the shaft 5. On the outer periphery of the discharge tool supporting disk 3, a discharge tool 9 which is a thin metal plate having an L-shaped cross section and provided with a large number of slits 8 and which is formed flexibly is fixed with a large number of bolts 10. And the discharge tool 9
The outer circumference of is contacted with the pressure welding tube 2. By forming the bending angle α of the discharging tool 9 in the range of 100 ° to 135 °, it is possible to scoop out the cutting waste generated in a ribbon shape. If the temperature is 100 ° or less and 130 ° or more, it is not possible to scoop the cutting chips sufficiently.

11 is a burr cutting blade which is attached to the blade holder 4.
Reference numeral 12 denotes a rotary roller provided on the outer periphery of the blade holder 4, which prevents the rotary roller 12 from contacting the inner wall surface of the pressure contact tube 1 during the pressure contact work so that the cutting edge of the burr cutting blade 11 does not contact the pressure contact tube 1. .

Reference numeral 13 denotes an outer cylindrical body for centering, which is provided with a taper portion 14 on the inner circumference of the tip and a large number of slits 15 from the tip to the central portion. 16 is an inner cylindrical body for centering, with a tapered portion on the outer circumference of the tip.
By providing 17 and meshing with the tapered portion 14, the outer cylinder 13 for centering is expanded to the outside and pressed against the inner wall surface of the pressure welding tube 1 to center the cutting shaft 18. .

The blade holder 4 is fixed to the tip of the cutting shaft 18, and can be moved forward and backward and rotated by a drive source (not shown).

19 is a connecting pipe, one end of which is screwed into the inner cylindrical body 16 for centering,
The other end is connected to a cylinder (not shown) to move the centering inner circumferential cylindrical body 16 forward and backward.

This embodiment is configured as described above, the connecting pipe 19 is moved forward after completion of the pressure welding work, and the taper portion 17 of the centering inner cylindrical body 16 is used for the taper portion 14 of the centering outer cylindrical body 13. The inner burr is cut by pushing it outward and crimping the tip of the centering outer cylindrical body 13 onto the inner wall surface of the pressure welding tube 1 and rotating the cutting shaft 18 forward. The cut inner burr is scattered in the pressure contact tube 2, but is prevented from being scattered to the back of the pressure contact tube 2 by the discharge tool supporting disk 3 and the discharge tool 9.

Next, the connecting pipe 19 is retracted to reduce the centering outer cylindrical body 13, and the pressure bonding to the pressure welding pipe 1 is released. After that, pressure welding tube 1
When the withdrawal is performed, the burr cutting waste is prevented from moving by the ejector 9 in association with this withdrawal, and is automatically ejected from the pressure welding tube at the end of the withdrawing operation of the pressure welding tube 1.

The discharge tool 9 is not limited to the one in the above-described embodiment, and any discharge tool having a heat resistant and flexible structure can be used.

Further, the friction welding machine itself is not limited to the embodiment, and various structures may be used.

(Effect of the device) In the present invention, the discharging device has a V-shaped cross section and a bending angle of 100.
Since it is a thin metal plate formed at ~ 130 ° and has a large number of slits to make it flexible, it is possible to follow the cross-section where the shaft center deviates, and it has heat resistance and wear resistance against high temperature cutting chips. The scraps generated in a ribbon shape can be scooped out and discharged, and even a long tube can be discharged easily.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of a friction welding machine equipped with an automatic tool for discharging inner burr cutting waste according to the present invention, FIG. 2 is a longitudinal sectional view of essential parts, and FIG. 3 is a partial front view. FIG. 4 is a perspective view showing a part of the discharging tool. 1, 2 ... Pressure contact tube, 3 ... Discharge tool supporting disk, 4 ... Blade holder, 5 ... Shaft, 6 ... Screw part, 7 ... Nut, 8 ... Slit,
9 ... Ejector, 10 ... Bolt, 11 ... Burr cutting blade, 12 ... Rotating roller, 13 ... Outer cylindrical body for centering, 14 ... Tapered portion, 15 ... Slit, 16 ... Inner cylindrical body for centering, 17 ... Taper Department, 18 ...
Cutting axis, 19 ... Connection pipe

Claims (1)

[Scope of utility model registration request] 1. An outer peripheral end is bent toward a tool holder so that the bent portion has a bending angle of 10 so that the cross section has a V shape.
A discharge tool support circle in which a discharge tool that is a thin circular metal plate formed at 0 to 135 ° and that has a plurality of slits radially provided in the bent outer circumference and abuts a flexible pressure contact tube is fixed to the outer circumference. A friction welding machine equipped with an automatic tool for discharging internal deburring chips, characterized in that a plate is attached via a shaft to the tip of a blade holder to which a cutting blade is fixed.