JPH11191909A - Cutter and cutting method for electric wire housing - Google Patents

Abstract

PROBLEM TO BE SOLVED: To cut housing of an electric wire to a taper shape with a machine, where the cutter axis is so arranged to have a certain angle with the axis of electric wire, and the cutter is attached in a freely slidable manner against the shaft arranged in a rotatable manner around the axis of electric wire. SOLUTION: When a motor 52 is operated by a controller 54, a wheel 48 rotates on a rail 50 in an arrow D direction. Then, as the wheel 48 moves, an annular member 46 moves also in the arrow D direction, and the cutter 42 begins to move in the arrow direction D along the shaft 32 through a bearing 44 supported by an inner hollow portion of a member 46. And the wheel 48 moves on the rail 50 in the arrow direction D, the cutter 42 contacts the housing 34a of electric wire 34 at a certain point in time. If the wheel 42 advances further in the arrow D direction, the cutter 42 cuts the housing 34a to a taper shape since the cutter 42 is set horizontally, and thus the cutter has a predetermined angle with the axis direction of the electric wire 34.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire cutting machine and a cutting method for cutting only the outer sheath of an electric wire composed of an inner core and an outer sheath. The present invention relates to an electric wire outer cutter and a cutting method for cutting only the outer surface of the one end face of the electric wire in a tapered shape.

[0002]

2. Description of the Related Art FIG. 1 shows an outer shape of an electric wire which is an object of the present invention. The electric wire 10 shown in FIG. 1 includes an inner core 12, an outer shell 14, and a thin rubber film 16 for insulation sandwiched between the inner core 12 and the outer shell 14. The inner core 12 is made up of a plurality of small-diameter conductive wires, and the outer cover 14 is made of an insulator. For example,
The outer cover 14 is formed by winding a paper tape around the inner core 12 several tens or several hundred times.

When connecting the electric wire 10 to a predetermined terminal, as shown in FIG. 2, first, only the outer skin 14 is cut off at one end surface of the electric wire 10 perpendicularly to the inner core 12.
Only the inner core 12 is exposed by a required length.

Next, the exposed inner core 12 is
As shown in FIG. 5, after being wound around the terminal 18 (or after caulking the inner core 12 with respect to the terminal 18 in some cases), the wire is wound around the terminal 18 and around the terminal 18 for insulation from the outside air. The inner core 12 is covered with an insulator. For example, insulation from outside air is performed by winding insulating paper around the terminal 18 and the inner core 12.

[0005]

Conventionally, FIG.
As shown in, the inner core 12 is wound around the terminal 18 with the outer skin 14 cut off perpendicular to the inner core 12,
Thereafter, for example, insulating paper is wound around the terminals 18.

However, since the outer sheath 14 of the electric wire 10 is larger in diameter than the inner core 12, when the insulating paper is wound around the terminal 18, the insulating paper swells at the boundary between the outer sheath 14 and the exposed inner core 12. There was a situation of going up.
For this reason, an extra space has to be secured around the terminal 18, and as a result, it has been an obstacle when wiring other electric wires.

In order to avoid such a problem, in the past, as shown in FIG. 4, the outer sheath 14 was cut into a tapered shape and the electric wire 10 was wound around the terminal 18. In this way, by cutting the outer skin 14 into a tapered shape, it was possible to avoid a situation in which the insulating paper swelled.

However, conventionally, since the tapered cutting of the outer cover 14 has been performed manually, the production efficiency has been extremely low. The present invention has been made in view of such a problem, and it is an object of the present invention to enable a machine to perform a tapered cutting of an outer sheath of an electric wire composed of an inner core and an outer sheath without manual work. Is what you do.

[0009]

In order to achieve this object, an electric wire sheath cutting machine according to the present invention comprises an inner core and an outer skin around the inner core, the inner wire being exposed at one end surface. An electric wire sheath cutting machine for cutting only the outer surface of one end surface into a tapered shape, wherein an electric wire fixing means for fixing the electric wire, and an axis is arranged at an angle to an axis of the electric wire, and At least one shaft rotatably arranged around the axis of the electric wire, and a cutter slidably mounted on the shaft and having a cutter blade parallel to the axis of the shaft. And

In the wire sheath cutting machine according to the present invention,
At least one shaft is arranged around the electric wire fixed by the electric wire fixing means. The axis of the shaft is inclined at an angle to the axis of the wire, and the shaft is rotatable about the axis of the wire while maintaining a tilt with respect to the axis of the wire. It is formed as follows.

[0011] A cutter is attached to the shaft. Therefore, this cutter, when the shaft rotates,
It rotates with the shaft. In addition, since the cutter is slidably mounted on the shaft, the cutter can move on the shaft in the direction of the electric wire axis while rotating with the shaft. The movement of the cutter can be performed manually or automatically using a suitable mechanism.

Since the shaft is arranged so as to be inclined with respect to the axis of the electric wire, the cutter also maintains the state of being inclined with respect to the axis of the electric wire. Thus, when the cutter moves on the shaft in the direction of the electric wire axis, the cutter eventually comes into contact with the outer sheath of the electric wire. Still,
When the cutter is moved, the cutter cuts the outer skin of the electric wire in a tapered shape.

As described above, according to the wire sheath cutting machine of the present invention, only the wire sheath can be cut into a tapered shape.

Although the above-mentioned cutter may be moved manually, it is preferable that the cutter is provided with a cutter moving means for moving the cutter in the direction of the axis of the electric wire.

An example of a specific configuration of the cutter moving means is described in claim 3. That is, the cutter moving means is a ring-shaped member in which an opening having a size not interfering with the shaft rotating around the axis of the electric wire is formed at the center, and has a hollow portion extending in the radial direction therein. A ring-shaped member, inside the hollow portion of the ring-shaped member, slidable in both the circumferential direction and the radial direction of the ring-shaped member along the inner wall of the ring-shaped member forming the hollow portion; And a bearing that supports the cutter.

The cutter slidably supported by the shaft is further supported in the hollow portion of the ring-shaped member via a bearing. Since this bearing is slidable in the circumferential direction and the radial direction along the inner wall of the ring-shaped member forming the hollow portion of the ring-shaped member, when the cutter is rotating with the rotation of the shaft, the bearing is not rotated. When the cutter slides circumferentially on the inner wall of the ring and the cutter moves along the shaft, the bearing moves radially on the inner wall of the ring. That is, the cutter is supported in the hollow portion of the ring-shaped member without being hindered from rotating with the shaft and moving along the shaft.

This ring-shaped member does not rotate and maintains a stationary state even while the cutter rotates with the shaft. Therefore, by moving the ring-shaped member in the axial direction of the electric wire, for example, manually, as a result, the cutter also moves in the axial direction of the electric wire.

Alternatively, a ring-shaped member moving means for moving the ring-shaped member in the direction of the axis of the electric wire may be further provided. As such means, for example, there is a combination of a rack and pinion and a step motor.

As the wire fixing means, any mechanism can be used as long as it can fix an electric wire.
It is preferable to include first wire fixing means for fixing the electric wire through the outer sheath and second electric wire fixing means for fixing the electric wire through the exposed inner core. In this way, by fixing the electric wire doubly using two electric wire fixing means,
The electric wire can be more reliably fixed at a predetermined position.

Particularly, as the second electric wire fixing means for fixing the electric wire via the inner core, it is preferable to use a pipe-shaped member having an inner diameter substantially equal to the outer diameter of the inner core. By storing the inner core inside this pipe-shaped member, it is possible to fix the electric wire through the inner core and also to protect the inner core, so that the exposed inner core is cut by the cutter blade. Damage can be prevented.

The angle of the shaft and thus the cutter with respect to the axis of the electric wire is determined according to various factors such as the thickness and hardness of the outer sheath of the electric wire, the cutting speed of the outer sheath of the electric wire, and the length of the outer sheath portion to be tapered. However, according to an experiment conducted by the inventor, the tapered cut surface was most smooth when this angle was set to about 6.5 degrees.

As described above, the cutter and thus the ring-shaped member for supporting the cutter can be manually moved in the axial direction of the electric wire. However, a mechanism for moving the cutter can be provided as the cutter moving means. When the cutter moving means is provided in this way, in addition to the above, the position of the cutter blade is detected, and a position detection signal corresponding to the position of the cutter blade is issued, as described in claim 8. It is preferable to further include a sensor and a cutter movement control device that receives a position detection signal from the sensor and stops the cutter moving unit when the cutter blade reaches the inner core of the electric wire.

When the sensor detects when the cutter blade has finished cutting the outer sheath of the electric wire, that is, when the cutter blade has reached the inner core, the sensor sends a signal to that effect to the cutter movement control device. In response to this signal, the cutter movement control device stops the cutter movement means. In this manner, the cutter can be automatically stopped.

Further, according to the present invention, according to the ninth aspect of the present invention, only the outer surface of the one end surface of the electric wire which is composed of the inner core and the outer skin around the inner core and has the inner core exposed at one end surface is provided. An electric wire cutting machine that cuts in a tapered shape, wherein the electric wire support means supports the electric wire, and is arranged at an angle to an axis of the electric wire, and is arranged rotatably around the axis of the electric wire. And an electric wire cutting machine, wherein the electric wire and the cutter are formed so as to be relatively movable with respect to each other along the direction of the axis of the electric wire.

In the wire sheath cutting machine according to the first aspect, the wire is stationary, the cutter moves with respect to the wire, and the wire sheath is cut. On the other hand, as claimed in claim 9, the cutter may be supported in one place without being moved, and the electric wire may be moved with respect to the cutter, or both the cutter and the electric wire may be mutually moved. You may move relatively. That is, claim 9
Defines the case where only the cutter moves, the case where only the electric wire moves, and the case where both the cutter and the electric wire move.

The present invention also provides a method of cutting an outer sheath of a wire, comprising an inner core and an outer skin around the inner core, wherein only the outer skin of the one end surface of the electric wire whose one end surface is exposed is tapered. A first step of fixing the electric wire, and a second step of rotating the cutter about the electric wire axis while maintaining its axis at an angle with respect to the electric wire axis. And a third step of moving the cutter in the direction of the axis of the electric wire while the second step is being performed.

Further, the present invention relates to a method of cutting an outer sheath of a wire, which comprises an inner core and an outer sheath around the inner core, wherein only the outer skin of the one end surface of the electric wire whose one end surface is exposed is tapered. A first step of supporting the wire, and a second step of rotating the cutter about the wire axis while maintaining its axis at an angle to the wire axis. And a third step of moving at least one of the electric wire and the cutter in the direction of the axis of the electric wire while the second process is being performed. I will provide a.

[0028]

FIG. 5 shows an embodiment of an electric wire cutting machine according to the present invention. The electric wire outer cutter 20 includes a pair of outer walls 22a and 22b facing each other. Outer wall 22a
The drive wheel 26 is connected to the outer wall 2 via a bearing 24a.
2a so as to be rotatable. On the other hand, a driven disk 28 is rotatably attached to the outer wall 22b via a bearing 24b.

On the outer periphery of the drive wheel 26, a drive belt 30 (which extends in a direction perpendicular to the plane of FIG. 5) between a drive motor (not shown) and only a cross section is shown in FIG. The drive wheel 26 is configured to rotate by receiving the power of a drive motor.

Two shafts 32 are supported between the drive wheel 26 and the driven disk 28 so as to face each other. Each shaft 32 is attached at an angle to the horizontal direction at an angle of about 6.5 degrees. Thus, the drive wheel 26 and the driven disk 28 are connected to the shaft 32.
When the drive wheel 26 rotates by receiving the power of the drive motor, the shaft 32
The driven disk 28 also rotates.

The drive wheel 26 and the driven disk 28 are provided with openings 26a and 28a at the center, respectively.
An electric wire 34 to be cut by the electric wire outer cutter 20 is supported through these openings 26a and 28a.

As shown in FIG. 2, the electric wire 34 cut by the electric wire cutting machine according to the present embodiment is configured such that the outer surface of the electric wire 34 has a cross section perpendicular to the inner core in advance at one end surface of the electric wire. Shall be cut off.

The outer sheath 34a of the electric wire 34 is
6 and is fixedly supported by a three-way claw 36 outside the outer wall 22a through the opening 26a. On the other hand, electric wire 3
The inner core 34b of No. 4 is fitted in a pipe 38 having an inner diameter substantially the same as the outer diameter of the inner core 34b, and the pipe 38 is fixedly supported by a three-way claw 40. In FIG. 5, the three-way claw 40 extends to the inside of the outer wall 22b, and supports the pipe 38 inside the outer wall 22b. However, similarly to the three-way claw 36 that supports the outer skin 34a of the electric wire 34, the three-way claw 40 is formed on the outer wall 22b. The pipe 38 may be supported on the outside.

The means for fixedly supporting the electric wire 34 is not limited to these three-side claws 36, 40.
Other known fixing means can be used. Thus, in a state where the outer skin 34a is supported by the three-way claw 36 and the pipe 38 containing the inner core 34b is supported by the three-way claw 40, the electric wire 34 is configured to be located at the center of the pair of shafts 32. Have been.

Each of the pair of shafts 32 has a cutter 4
2 is mounted so as to be slidable with respect to the shaft 32 in the axial direction of the shaft 32. For example, by fitting the shaft 32 into a hole formed in the center of the cutter 42, the cutter 42 can slide with respect to the shaft 32.

The tip of the cutter 42 has a cutter blade 42a
Is formed, and this cutter blade 42a is
It extends parallel to 2. The material of the cutter blade is SKH-3
Is a seed.

At the other end of the cutter 42, a bearing 44 is mounted so as to be rotatable about the longitudinal axis of the cutter 42, and the bearing 44 is supported inside a ring-shaped member 46 described below. ing.

A ring-shaped member 46 is arranged around the pair of shafts 32. At the center of the ring-shaped member 46, a circular opening 46a having an outer diameter that does not interfere with the shaft 32 rotating around the electric wire 34 is provided, and the shaft 32 is positioned inside the opening 46a. It has become.

A cylindrical hollow portion extending in the radial direction is formed inside the ring-shaped member 46.
Is fitted in a ring-shaped member 46 inside the hollow portion. Ring-shaped member 4
The hollow portion 6 is defined by inner walls 46b and 46c facing each other.

FIG. 6 is an enlarged view showing an engagement state between the bearing 44 and the ring-shaped member 46. As shown in FIG. 6, the outer peripheral surface of the bearing 44 has an inverted V-shaped cross section that is convex outward.
As described above, since the shaft 32 is arranged at an angle with respect to the horizontal direction, the cutter 42 attached to the shaft 32 has the same angle with respect to the vertical direction. Therefore, on the drive wheel 26 side, the bearing 44 is in contact with the inner wall 46b of the ring-shaped member 46 on the lower half surface 44a of the outer peripheral surface thereof, and on the driven disk 28 side, the bearing 44 is The upper half surface 44b is in contact with the inner wall 46c of the ring-shaped member 46.

Therefore, the bearing 44 has a lower half surface 44a of the outer peripheral surface on the inner wall 46b and an upper half surface 4a of the outer peripheral surface.
4b is rotatable around the axis of the bearing 44, that is, in the direction indicated by the arrow A in the hollow portion of the ring-shaped member 46 with the cutter 4b in contact with the inner wall 46c. When the shaft 42 rotates with the shaft 32 around the electric wire 34, the bearing 44 also moves through the hollow portion of the ring-shaped member 46 in the direction of the arrow B (see FIG. 5) around the electric wire 34, that is, the ring-shaped member 46. Can be rotated in the circumferential direction.

Furthermore, the bearing 44 has a lower half surface 44a on the inner wall 46b and a lower half surface 4a on the outer peripheral surface.
With the 4b in contact with the inner wall 46c, it is slidable inside the hollow portion of the ring-shaped member 46 in the radial direction of the ring-shaped member 46, that is, in the direction indicated by the arrow C.

Even when the cutter 42 rotates together with the shaft 32 in the direction of the arrow B, the ring-shaped member 46 does not rotate with the cutter 42 and remains stationary.

As shown in FIG. 5, a wheel 48 is mounted on the upper end of the ring-shaped member 46 so as to be rotatable around a direction perpendicular to the plane of FIG. Outer wall 22a and outer wall 22
A rail 50 is bridged between the rails 50b and 46b, and the wheel 48 is placed on the rail 50. Accordingly, as the wheel 48 rolls on the rail 50, the ring-shaped member 46 moves accordingly between the position indicated by the solid line and the position indicated by the chain line in FIG.

The wheel 48 is driven by a motor 52, and rotates by receiving the power of the motor 52. A controller 54 is connected to the motor 52, and the number of rotations and the rotation time of the motor 52 are controlled by the controller 54.

The sensors 56a and 56b are arranged above the base end and the tip of the shaft 32, respectively. These sensors 56a and 56b are activated when the ring-shaped member 46 reaches below the sensors 56a and 56b.
When a position indicated by a solid line and a chain line in FIG. 5 is reached, a detection signal is issued to the controller 54.

The electric wire cutting machine according to the present embodiment configured as described above operates as follows. First, as shown in FIG.
4a is cut in the vertical direction, and only the outer skin 34a is taken out.
An electric wire 34 with the inner core 34b exposed is prepared. The exposed inner core 34b of the electric wire 34 is inserted into the pipe 38.

Next, with the inner core 34b inserted into the pipe 38, the electric wire 34 is connected to the opening 26 of the drive wheel 26.
The wire 34 is fixed to the position shown in FIG. 5 by passing the outer skin 34a with the three-way claw 36 and the pipe 38 with the three-way claw 40 respectively. In addition, in the state before the operation of this electric wire sheath cutting machine,
The ring-shaped member 46 is at a position shown by a solid line in FIG.

Thereafter, a motor (not shown) is operated to rotate the drive wheel 26 via the drive belt 30. When the drive wheel 26 starts to rotate, the driven disk 28 integrated with the drive wheel 26 via the shaft 32 also starts to rotate, and the cutter 42 supported by the shaft 32 and the shaft 32 together with the electric wire 34
Start rotating around. That is, while the bearing 44 attached to the cutter 42 rotates around its axis, that is, in the direction of arrow A, the ring-shaped member 4
6 around the electric wire 34, that is, the arrow B
Rotate in the direction of. In this way, even when the cutter 42 rotates in the directions of the arrows A and B, the ring-shaped member 46 does not rotate and remains stationary.

Next, when the motor 52 is operated via the controller 54, the wheel 48 is driven by the motor 52.
And starts rolling on the rail 50 in the direction indicated by the arrow D. With the movement of the wheel 48, the ring-shaped member 46 also starts moving in the direction of arrow D.

When the ring-shaped member 46 starts to move in the direction of arrow D, the cutter 42 also moves along the shaft 32 along the shaft 32 via a bearing 44 supported in a hollow portion inside the ring-shaped member 46. Start moving in the direction. In this case, the cutter 42 moves in the direction of arrow D along the shaft 32 while the bearing 44 rotates in the direction of arrow A about its axis and moves in the direction of the electric wire 34 along the direction of arrow C. Will move.

When the wheel 48 moves on the rail 50 in the direction of arrow D, at some point the cutter 42
4 comes in contact with the outer skin 34a. Further, when the wheel 48 is advanced in the direction of arrow D, the cutter 42 forms an angle of about 6.5 degrees with the horizontal direction, that is, the direction of the axis of the electric wire 34, so that the cutter 42 Is cut into a tapered shape.

When the ring-shaped member 46 reaches the position shown by the chain line in FIG. 5, the tapered cutting of the outer sheath 34a of the electric wire 34 is completed. When the ring-shaped member 46 reaches this position, the sensor 56b sends a detection signal to the controller 54, and the controller 54 stops the motor 52. For this reason, the ring-shaped member 46 stops at the position where the cutter 42 cuts only the outer skin 34a of the electric wire 34, and the electric wire 3
No further cutting of No. 4. That is, the electric wire 34
Of the inner core 34b is not cut.

Since the inner core 34b is inserted into the pipe 38, even if the stop of the ring-shaped member 46 is delayed, the cutter 42 only slightly bites into the pipe 38 and the inner core 34b is cut. It will not be done.

As described above, the cutter 42 is connected to the shaft 3.
2 in the direction of arrow D along with the bearing 4
4 moves in the hollow part of the ring-shaped member 46 toward the electric wire 34 in the direction of arrow C. When the cutting of the outer skin 34a is completed, the bearing 44 has reached a position immediately near the opening 46a of the ring-shaped member 46, as shown by the chain line in FIG.

When the tapered cutting of the outer skin 34a is completed as described above, the motor 52 is rotated in the reverse direction via the controller 54 to move the ring-shaped member 46 in the direction opposite to the arrow D. When the ring-shaped member 46 reaches the position shown by the solid line in FIG. 5, the sensor 56a sends a detection signal to the controller 54, and the controller 54 stops the motor 52. Thus, the ring-shaped member 46 returns to the initial position.

Thereafter, the three-way claws 36 and 40 are loosened, and the electric wire 34 inserted in the pipe 38 is taken out. Pipe 3
As shown in FIG. 4, the electric wire 34 taken out from 8 has only the outer skin 34a cut in a tapered shape.
Thus, one cycle of the tapered cutting of the outer cover 34a is completed.

The outer diameter of the electric wire 34, and therefore the inner core 34
If the outer diameter of b and the thickness of the outer skin 34a are different, the inner diameter of the pipe 38 is changed accordingly. Further, the inclination angle of the shaft 32 is changed as necessary.

In the above embodiment, the electric wire 34 is fixed, and the ring-shaped member 46 supporting the cutter 42.
Although the example in which is moved has been described, the reverse configuration is also possible. That is, the same result can be obtained by rotating the cutter 42 in the direction indicated by the arrow D without moving the cutter 42 in the direction indicated by the dashed line in FIG. Obtainable. In this case, the inner core 34b of the electric wire 34 is connected to the pipe 38.
It is not necessary to keep them inside.

In the above-described embodiment, the wheel 48, the rail 50 and the motor 52 are used to move the ring-shaped member 46 in the direction of arrow D, but the ring-shaped member 46 is manually moved without using these. Can also be moved. In this case, a stopper for the ring-shaped member 46 may be provided so that the ring-shaped member 46 stops at the position indicated by the solid line and the chain line in FIG.

The number of cutters 42 is not limited to two. At least one cutter 42 may be provided, or three or more cutters 42 may be provided.

The inclination angle of the shaft 32 is not limited to 6.5 degrees. Although any angle can be set, the taper angle of the outer sheath 34a at the end of the electric wire 34 is most preferably about 6.5 degrees.

[0063]

As described above, according to the present invention, all of the tapered cutting of the outer sheath of the electric wire, which has been manually performed so far, can be automatically performed.

[Brief description of the drawings]

FIG. 1 is a perspective view of an electric wire including an inner core and an outer cover.

FIG. 2 is a perspective view of an electric wire in which only an outer skin is cut at one end surface.

FIG. 3 is a perspective view showing a state in which the electric wire shown in FIG. 2 is wound around a terminal.

FIG. 4 is a perspective view of an electric wire whose outer surface is cut into a tapered shape at one end surface.

FIG. 5 is a sectional view of an embodiment of the electric wire cutting machine according to the present invention.

FIG. 6 is an enlarged sectional view showing an engagement state between a cutter and a ring-shaped member.

[Explanation of symbols]

 REFERENCE SIGNS LIST 20 electric wire skin cutting machine 22 a, 22 b outer wall 26 drive wheel 28 driven disk 30 drive belt 32 shaft 34 electric wire 36, 40 three-way claw 38 pipe 42 cutter 44 bearing 46 ring-shaped member 48 wheel 50 rail 52 motor 54 controller

Claims (12)

[Claims] 1. An electric wire skin cutting machine comprising an inner core and an outer skin surrounding the inner core, wherein only one end surface of the electric wire having an exposed inner core at one end surface is cut in a tapered shape. Wire fixing means for fixing the shaft, at least one shaft whose axis is arranged at an angle to the axis of the wire, and which is rotatably arranged around the axis of the wire; and A cutter having a cutter blade slidably attached to the shaft and parallel to the axis of the shaft. 2. The electric wire outer cutter according to claim 1, further comprising a cutter moving unit configured to move the cutter in a direction of an axis of the electric wire. 3. The cutter moving means is a ring-shaped member in which an opening having a size that does not interfere with the shaft rotating around the axis of the electric wire is formed at the center, and a hollow portion extending in a radial direction. A ring-shaped member having therein, inside the hollow portion of the ring-shaped member, in both the circumferential direction and the radial direction of the ring-shaped member along the inner wall of the ring-shaped member forming the hollow portion. The wire-skin cutting machine according to claim 2, comprising: a slidable bearing; and a bearing supporting the cutter. 4. The electric wire outer cutter according to claim 3, further comprising a ring-shaped member moving means for moving the ring-shaped member in a direction of an axis of the electric wire. 5. An electric wire fixing means, comprising: first electric wire fixing means for fixing the electric wire via the outer sheath; and second electric wire fixing means for fixing the electric wire via the exposed inner core. The wire sheath cutting machine according to any one of claims 1 to 4, wherein the wire sheath cutting machine comprises: 6. The electric wire outer cutter according to claim 5, wherein the second electric wire fixing means is a pipe-shaped member having an inner diameter substantially equal to an outer diameter of the inner core. 7. The wire sheath cutting machine according to claim 1, wherein the angle is about 6.5 degrees. 8. A sensor that detects a position of the cutter blade and generates a position detection signal corresponding to the position of the cutter blade; and receives a position detection signal from the sensor; The electric wire sheath cutting machine according to any one of claims 2 to 7, further comprising a cutter movement control device that stops the cutter moving means when the wire reaches the core. 9. An electric wire sheath cutting machine comprising an inner core and an outer skin surrounding the inner core, the outer wire cutting machine tapering only the outer skin at the one end surface of the electric wire having the inner core exposed at one end surface, Wire support means for supporting, and arranged at an angle to the axis of the wire, and
At least one cutter rotatably disposed about the axis of the wire, wherein the wire and the cutter are formed to be relatively movable along the direction of the wire axis. Wire electric wire cutting machine. 10. A method of cutting an outer sheath of a wire, comprising an inner core and an outer skin around the inner core, wherein only the outer skin of the one end surface of the electric wire whose one end surface is exposed is tapered. A first step of securing the wire, a second step of rotating a cutter about the wire axis while maintaining its axis at an angle to the wire axis, and A third step of moving the cutter in the direction of the axis of the electric wire while the second step is being performed. 11. A method of cutting an outer sheath of a wire, comprising an inner core and an outer skin surrounding the inner core, wherein only the outer skin of the one end surface of the electric wire whose one end surface is exposed is tapered. A first step of supporting the wire; a second step of rotating a cutter about the wire axis while maintaining its axis at an angle to the wire axis; and A third step of moving at least one of the electric wire and the cutter in the direction of the axis of the electric wire while the second process is being performed. 12. The method according to claim 10, wherein the angle is about 6.5 degrees.