JPH0248179Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Technical Field] The present invention relates to a grooving cutter used for stripping an aluminum pipe from a cable sheath inside an aluminum pipe.

[Conventional technology and its problems]

In recent years, optical fiber cables have come into widespread use, and such optical fiber cables are sometimes used in combination with overhead lines. In optical composite overhead ground wires (commonly known as OPGW) that are combined with overhead lines, optical fiber cables are protected in aluminum pipes. For this reason, it is necessary to remove the aluminum pipe when connecting the terminal to the optical fiber cable, and there is a problem that if the aluminum pipe is removed using nippers or wire strippers, the internal optical fiber cable will be damaged.

Therefore, using a pipe cutter as shown in Figure 4, cut the aluminum pipe with roller cutter 10 and roll 15.
A method was devised to cut a spiral groove into the aluminum pipe between the holes and peel it off.

However, if the aluminum pipe is removed using a pipe cutter like the one mentioned above, it is easy to damage the internal optical fiber cable when cutting the spiral groove, and since the aluminum pipe for optical fiber is thin, it is easy to break when peeling it off, and it is difficult to cut the spiral groove. There was a problem that it was difficult to remove it cleanly.

[Purpose of invention]

The purpose of this invention is to simultaneously create multiple cutting grooves of a certain depth in the longitudinal direction of an object to be stripped, such as an aluminum pipe that stores easily damaged items inside, so that there is no damage to the items stored inside. To provide a grooving cutter which can easily peel off an object to be peeled off without causing damage.

[Structure of the idea]

The grooving cutter of the present invention is composed of a grooving cylindrical body and a depth adjustment cylindrical body, and the grooving cylindrical body has a threaded groove carved on the outer periphery of the distal end, and a disk having a through hole is fixed at the base end. A cylindrical body with a gripping rod protruding from the outer periphery, a cylindrical body fixed around a through-hole of the disk so as to be movable in the direction of the central axis of the through-hole, a roller cutter in the middle, and a central axis of the through-hole at the tip. The cylindrical body for depth adjustment includes a plurality of groove cutting tools each having a tapered surface facing in the direction, while a cylindrical body for depth adjustment has a threaded groove carved on the inner circumferential surface of the tip, and a disk having a through hole is fixed at the base end. It comprises a tightening body and a tapered surface engaging body disposed at the rear of the threaded groove of the tightening body, and by screwing the threaded groove of the grooved cylindrical body and the threaded groove for depth adjustment. This is characterized in that the tapered surface and the tapered surface engaging body are engaged with each other to adjust the depth of grooving in the direction of the central axis of the roller cutter.

〔Example〕

Next, the groove cutting cutter of the present invention is shown in Figures 1 and 2.
This will be explained in detail with reference to the drawings.

The grooving cutter of the present invention has a grooving cylindrical body 1
and a cylindrical body 2 for depth adjustment.

The grooving cylindrical body 1 includes a cylindrical body 3 and a grooving tool 4. The cylindrical body 3 has a thread groove 5 on the outer periphery of the tip.
is engraved, and the base end has a through hole 6 in the center.
A disk 7 having a shape is fixed. Two concave guide rolls 8 are attached to the through hole 6 in parallel. Furthermore, a pair of gripping rods 9 are provided protruding from the outer periphery of the cylindrical body.

Four groove cutting tools 4 are arranged around the through hole 6 of the disk 7 at equal intervals. Each groove cutter 4 has its base attached to a disk 7 so as to be movable in the direction of the center axis of the through hole 6, and a roller cutter 10 is disposed in the middle part, and furthermore, the tip part is provided with a A tapered surface 11 facing the central axis direction of the hole 6 is formed. This tapered surface 11 is configured to protrude from the tip of the cylindrical body 3. In the figure, reference numeral 12 denotes a guide plate having a cross-shaped guide groove for regulating the movement of the groove cutter 4.

The depth adjusting cylindrical body 2 includes a tightening body 13 and a tapered surface engaging body 14. Tightening body 1
3 has a threaded groove 5' carved on the inner periphery of the tip, and a disk 7' having a through hole 6' in the center is fixed to the base end. Two concave guide rolls 8' are attached in parallel to the through hole 6'.

The tapered surface engaging body 14 has a donut disk shape,
It is arranged at the rear of the threaded groove 5' of the tightening body 13.

Next, a method of using the groove cutter having the above structure will be explained.

As shown in FIG. 3, first, the through holes 6,
6' is the object to be stripped such as aluminum pipe or cable 15
Insert. After that, the threaded groove 5 of the grooved cylindrical body 1 is
The screw groove 5' of the depth adjusting cylindrical body 2 is screwed into the cylindrical body 2.
In this state, the tapered surface engaging body 14 of the depth adjusting cylindrical body 2 engages with the tapered surface 11 of the groove cutter 4. The groove cutter 4 is movable in the direction of the center axis of the through hole 6, and the tapered surface 11 is formed to face the center axis of the through hole 6, 6'. As it is screwed in, the tapered surface engaging body 14 advances on the tapered surface 11 of the grooving tool 4, and as a result, the roller cutter 10 attached to the middle part of the grooving tool 4 moves around the outer periphery of the object to be peeled 15. It sinks in. This biting depth is adjusted by the screwing depth of the depth adjusting cylindrical body 2. After the roller cutter 10 is inserted to a predetermined depth, the groove cutting cylinder 1 and the depth adjustment cylinder 2 are moved in the longitudinal direction of the object to be peeled 15 using the gripping rod 9. As a result, four parallel grooves can be formed in the longitudinal direction of the object to be peeled 15. The work is then completed by peeling off the grooved part.

In the above embodiment, four groove cutting tools were used, but the number of groove cutting tools may be more than one, for example, three.
The number may be 1, 6, etc. Further, the tapered surface of the groove cutter may be located inside the cylindrical body. Furthermore, if a scale is carved on the outer periphery of the depth adjusting cylinder, it is convenient to easily manage the depth of penetration of the roller cutter. Furthermore, the guide roll for the through hole can be omitted.

[Effect of idea]

As described above, the groove cutting cutter according to the present invention can freely adjust the depth of the groove, so it can be easily applied to objects to be grooved of various thicknesses, and since it has multiple groove cutting tools, it can be used only once. Multiple groove cutting work can be completed with this operation.

[Brief explanation of drawings]

FIG. 1 is a partially cutaway perspective view of an embodiment of the present invention, FIG. 2 is an exploded explanatory view, and FIG. 3 is an explanatory view of use.
FIG. 4 is a perspective view of a conventional example. 1... Grooving cylindrical body, 2... Depth adjustment cylindrical body, 3... Cylinder body, 4... Grooving tool, 5, 5'
...Thread groove, 6,6'...Through hole, 7,7'...Disc, 8,8'...Guide roll, 9...Gripping rod,
10...Roller cutter, 11...Tapered surface, 12...Guide plate, 13...Tightening body, 14
...Tapered surface engaging body, 15...Object to be peeled off.

Claims (1)

[Scope of utility model registration request] Consists of a grooving cylindrical body and a depth adjustment cylindrical body,
The grooved cylindrical body includes a cylindrical body having a screw groove carved on the outer periphery of the distal end, a disk having a through hole at the base end fixed thereto, and a gripping rod protruding from the outer periphery, and a cylindrical body around the through hole of the disk. is fixed movably in the direction of the central axis of the through hole, and is provided with a roller cutter in the middle, and a plurality of groove cutting tools each having a tapered surface facing in the direction of the central axis of the through hole at the tip, The depth adjusting cylindrical body has a tightening body with a threaded groove carved on the inner circumferential surface of the tip and a disk having a through hole fixed at the base end, and a tapered surface arranged at the rear of the threaded groove of the tightening body. The tapered surface is engaged with the tapered surface engaging body by screwing together the thread groove of the grooving cylindrical body and the depth adjustment thread groove, and the center of the roller cutter is A grooving cutter characterized by adjusting the depth of grooving in the axial direction.