JP2002281632A - Coaxial cable terminal processing machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a coaxial cable terminal processing machine which can perform terminal processing simply and surely. SOLUTION: This coaxial cable terminal processing machine is equipped with a guide cylinder, where the end of a coaxial cable is inserted, a holder member 2 which is provided on the side of the base end in axial direction more than the guide cylinder 1; an L-shaped tip side cutting edge 3 which is provided on the tip side in the axial direction of the holder member 2 and has the first edge for cutting a cover sheath into spiral form and the second edge for separating the cover sheath from an outer conductor to outside; and an L-shaped base-side cutting edge 4 which is provided; and a predetermined dimension apart on the side of the base end in axial direction more than the tip-side cutting edge 3, at the holder member 2 and also has the first cutting edge for cutting the outer conductor and an insulator into spiral form and the second edge for separating the outer conductor and the insulator from an inner conductor to outside. Furthermore, this processing machine possesses an inner guide shaft 6, which is provided at the position of an axis P of the holder member 2 and a stopper member 7 which is provided, by the predetermined dimension apart on the side of the base end in the axial direction more than base end side cutting edge 4, at the holder member 2 and stops bump of the end face of the inner conductor.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a terminal processing apparatus for attaching a connector to a high-frequency coaxial cable.

[0002]

2. Description of the Related Art As shown in FIG.
50 is an inner conductor 51 and an insulator 52 covering the inner conductor 51.
And an outer conductor 53 made of a ring-shaped corrugated tube that covers the insulator 52, and an outer sheath 54 that covers the outer conductor 53. After that, attach the connector and use it.

[0003] When mounting the connector on the end of the coaxial cable 50, in the conventional uses a cutter knife, remove the skin sheath 54 from the end face 55 of the inner conductor 51 to the outer conductor valley position of a predetermined dimension L ₁ . Then, by using the pipe cutter removed outer conductor 53 and insulator 52 from the end face 55 to the outer conductor valley position slightly beyond the predetermined dimension L _2, using a jig and rasp, the inner conductor 51 adjusting the projection length to a predetermined dimension L _2. Thereafter, the end face 55 of the internal conductor 51 is chamfered using a file. Terminal processing was performed in this manner.

[0004]

However, in the prior art, four steps were required manually to process a terminal into a required shape, and the processing time was long. In addition, the use of a cutter knife is dangerous, and when removing the outer sheath 54, it is necessary to prevent the outer conductor 53 from being damaged, which requires skill.

Accordingly, an object of the present invention is to provide a coaxial cable terminal processing device capable of performing terminal processing simply and reliably.

[0006]

In order to achieve the above object, a coaxial cable terminal processing apparatus according to the present invention provides a cylindrical inner conductor, an insulator covering the inner conductor, and an insulator covering the inner conductor. A terminal processing apparatus for performing terminal processing for attaching a connector to a coaxial cable including an outer conductor formed of a ring-shaped corrugated tube and an outer sheath covering the outer conductor, wherein an end of the coaxial cable is inserted. A guide cylinder on which the outer peripheral surface of the outer sheath slides, a holder member provided on the base end side in the axial direction with respect to the guide cylinder, and an axial center of the holder member provided on the distal end side in the axial direction of the holder member An L-shaped tip-side cutting blade in which the first blade portion spirally cuts the outer sheath and the second blade portion separates the outer sheath from the outer conductor to the outer diameter side by rotation, and the holder. Cutting to the member and the tip side A first blade portion is provided at a predetermined distance from the blade in the axial direction at the base end side, and the first blade portion spirally cuts the outer conductor and the insulator by rotation of the holder member about the axis, and a second blade portion. An L-shaped proximal cutting blade that separates the outer conductor and the insulator from the inner conductor to the outer diameter side,
An inner conductor guide shaft which is provided at an axial position of the holder member and is inserted into the inner conductor to align the axis of the coaxial cable; and a predetermined axially proximal end of the holder member and the proximal cutting blade. A stopper member that is provided at a distance from each other and stops the end surface of the internal conductor.

A coaxial cable having a cylindrical inner conductor, an outer conductor comprising an insulator covering the inner conductor, a ring-shaped corrugated tube covering the insulator, and an outer sheath covering the outer conductor. A terminal processing apparatus for performing terminal processing for attaching a connector to a guide cylinder, wherein an end of a coaxial cable is inserted and an outer peripheral surface of the outer sheath slides on the guide cylinder, and a proximal end in the axial direction of the guide cylinder. A first blade portion cuts the outer sheath in a helical manner by rotation of the holder member around an axis, and a second blade portion. An L-shaped distal cutting blade for separating the outer sheath from the outer conductor to the outer diameter side, and a predetermined distance from the holder member and closer to the axially proximal end than the distal cutting blade. Rotation of the holder member around the axis The first blade portion spirally cuts the outer conductor and the insulator, and the second blade portion separates the outer conductor and the insulator from the inner conductor to the outer diameter side. A blade, a surface provided on the holder member at a predetermined distance axially closer to the base end than the cutting blade on the base end side, and slidably in contact with the end surface of the internal conductor when the holder member is rotated about the axis, and chamfers the surface. A cutting blade, an inner conductor guide shaft provided at an axial center of the holder member and inserted into the inner conductor to align the axis of the coaxial cable; And a stopper member provided on the end side with a predetermined distance therebetween to stop the chamfered end surface of the internal conductor.

[0008] Further, an arc-shaped distal-side cutting blade holder for holding the distal-side cutting blade, and a circular-disk-shaped base-side cutting blade holder for holding the proximal-side cutting blade, are provided with a point centered on the axis. It is attached to the holder member at a symmetric position. Further, the inner conductor guide shaft is rotatable with respect to the holder member.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail with reference to the drawings showing embodiments.

1 to 6 show an embodiment of a coaxial cable terminal processing apparatus according to the present invention, FIG. 1 is an external view showing an outer peripheral surface side of the processing apparatus, and FIG. Line cross section,
3 is another external view showing the outer peripheral surface side of the processing apparatus, FIG. 4 is a sectional view taken along line BB of FIG. 3, FIG. 5 is a partial sectional view showing the outer peripheral surface side of the processing apparatus, and FIG. It is CC sectional view taken on the line of FIG. As shown in FIG. 17, this processing device includes a high-frequency coaxial cable 50.
Is subjected to terminal processing to attach a connector to the end. By the way, the high-frequency coaxial cable 50 is
51, an insulator 52 covering the inner conductor 51, an outer conductor 53 comprising a ring-shaped corrugated tube covering the insulator 52, and an outer conductor
And an outer sheath 54 covering the outer sheath 53.

More specifically, with reference to FIGS. 1 to 6, this processing apparatus comprises a guide cylinder 1 on the distal end side and a holder member 2 provided on the base end side in the axial direction with respect to the guide cylinder 1.
And a distal cutting blade 3 provided on the holder member 2 on the distal end side in the axial direction, and a proximal end provided on the holder member 2 on the proximal end side in the axial direction of the cutting blade 3 on the distal side and separated by a predetermined distance. A side cutting blade 4, a chamfering blade 5 provided on the holder member 2 and at a predetermined distance away from the base side cutting blade 4 in the axially proximal side,
An inner conductor guide shaft 6 is provided rotatably with respect to the holder member 2, and a stopper member 7 provided on the holder member 2 and on the axially proximal side of the proximal side cutting blade 4. .

As shown in the sectional side view of FIG. 1, FIG. 3, FIG. 5, and FIG. 7A, and the front view of FIG.
The inner diameter of the center hole 9 is set to be the same as or slightly larger than the outer diameter of the high-frequency coaxial cable 50 to be processed. When the end of the coaxial cable 50 is inserted into the guide cylinder 1, the outer sheath is The outer peripheral surface of 54 is in sliding contact with the inner peripheral surface of center hole 9. That is, the coaxial cable 50 can be inserted into the guide cylinder 1 without axial deviation (see FIG. 14). This guide cylinder 1
As the outer sheath 54 of the cable 50 slides,
It is preferably formed of a synthetic resin, but may be made of metal. The opening at the distal end of the center hole 9 has a tapered shape, and a short tubular portion 1a is provided on the outer periphery of the base end opening. A plurality of bolt insertion holes 10 are formed at a pitch.

As shown in FIGS. 1 to 6 and FIGS. 8 (a) to 8 (d), the holder member 2 has a hole 11a which fits into the short tube portion 1a at the base end of the guide tube 1. Ring section on the tip side
11, a concave portion 12a opening to the proximal end, a proximal-side bearing housing case 12 having a hole 12b having substantially the same diameter as the hole 11a at an axial center of the concave portion 12a, a ring portion 11 and a bearing housing case 12. A pair of plate-shaped connecting frames 13
And The pair of connecting frames 13, 13 are formed with holes 11a, 12b.
Are located 180 ° symmetrically with respect to each other.
A notch 13a is formed on the base end side of one surface up to the axial position in the thickness direction (as viewed from the side as shown in FIG. 8B), and the cut end 13a is formed on the distal end side of the other surface to the axial position in the thickness direction. A shallow recess 13b that does not reach is formed. In the ring portion 11, the connection frames 13, 13 and the bearing housing case 12, bolt insertion holes and screw holes for mounting various components are formed at predetermined positions. In the holder member 2, the distal end surface of the ring portion 11 is connected to the base end surface of the guide cylinder 1 by bolts or the like.

As shown in FIGS. 1 to 4 and FIGS. 9A to 9D, the distal cutting blade 3 and the proximal cutting blade 4 are connected to the first blade 16 and the first blade 16. On the other hand, the second blade portion 17 erected on one side edge is formed in an L-shape. First blade 16
Means that the cutting edge 18 has a predetermined inclination angle θ ₁ (for example, 15 ° to 25 °,
(Preferably 20 °) and a mounting piece 16b having a long hole 20. The second blade portion 17 formed as a whole in a rectangular piece shape has a blade edge 19 formed at a predetermined inclination angle θ ₂ (for example, 15 ° to 25 °, preferably 20 °). The blade 16 is aligned in the same direction as the blade edge 18 of the portion 16 and is inclined toward the first blade portion 16 at a predetermined inclination angle θ ₃ (for example, 5
° to 15 °, preferably 10 °). Reference numeral 45 denotes a corner (corner) where the blade edge 18 of the first blade portion 16 and the blade edge 19 of the second blade portion 17 intersect.

FIG. 10 shows the above-mentioned distal cutting blade 3.
Is an arc-shaped (substantially half ring-shaped) tip-side cutting blade holder 22 for holding the blade, and is formed of, for example, a steel material. The distal-side cutting blade holder 22 is provided with concave portions 13b, 13 on the distal side of the pair of connecting frames 13, 13 of the holder member 2 described with reference to FIG.
b, the shape of the arc is less than a semicircle (as viewed from the axial direction), and both end faces 24, 24 are flush with each other. A mounting groove 25 for mounting the distal cutting blade 3 in a fitting storage shape is formed on the base end surface of the holder 22 from the outer surface to the inner surface. The bottom surface 26 of the mounting groove 25 has a predetermined inclination angle α (for example, 5 °).
-15 °, preferably 10 °), and a screw hole 27 for mounting the cutting blade 3 with a bolt is provided. Note that screw holes 28, 28 extend through the end faces 24, 24 of the holder 22 to the outer surface (see FIG. 2).

FIG. 11 shows an arc-shaped (half-ring-shaped) base-side cutting blade holder 23 for holding the base-side cutting blade 4 described above. The base-side cutting blade holder 23 is formed of, for example, a steel material. I have. The base-side cutting blade holder 23 is attached to the base-side cutouts 13a, 13a of the pair of connecting frames 13, 13 of the holder member 2 described with reference to FIG. (See) a semicircular arc shape, and both end faces 29, 29 are flush. A mounting groove 30 for mounting the base-side cutting blade 4 in a fitting storage shape is provided on the base end surface of the holder 23.
It is formed from the outer surface to the inner surface. This mounting groove 30
Has a similar inclination angle α (for example, 5 ° to 15 °) as described above.
(Preferably 10 °) and a screw hole 32 for mounting the cutting blade 4 with a bolt.
A screw hole extends from each end surface 29, 29 of the holder 23 to the outer surface.
33, 33 are penetrated (see FIG. 4).

As shown in FIGS. 1 to 5, the distal-side cutting blade holder 22 to which the distal-side cutting blade 3 is attached has both end surfaces 24, 24 having a pair of connecting frames 13, 24 of the holder member 2. The base-side cutting blade holder 23, which is connected to the recesses 13b, 13b of the thirteen by bolts and has the base-side cutting blade 4 attached thereto, has both end faces 29, 29 of which are connected to the pair of connection frames 13 of the holder member 2. , 13 are connected by bolts to notches 13a, 13a. That is, the arc-shaped tip-side cutting blade holder 22 and the arc-shaped base-side cutting blade holder 23 are symmetrically placed about the axis P.
To maintain rotational balance.

At this time, as shown in FIGS. 1, 9 and 10, the inclined surface of the first blade portion 16 of the distal cutting blade 3 attached to the bottom surface 26 of the mounting groove 25 of the distal cutting blade holder 22. , to the plane perpendicular to the axis P, the inclination angle beta (e.g. 20 ° to 40 °, preferably 30 °) obtained by adding the inclination angle theta ₁ and the inclination angle α of the above are inclined at. Note that the inclination angle β is
If the angle is smaller than 20 °, the bite of the outer sheath 54 by the first blade portion 16 into the end face becomes shallower, and the helical pitch of the peeling of the outer sheath 54 becomes small, and there is a possibility that the outer sheath 54 is torn off in the middle. If the inclination angle β is greater than 40 °, the first blade portion 16 will bite into the end surface of the outer sheath 54, and the helical pitch of the outer sheath 54 will be increased, making it difficult for the outer sheath 54 to be separated. Also, as shown in FIGS. 3, 9 and 11, the inclined surface of the first blade portion 16 of the proximal cutting blade 4 attached to the bottom surface 31 of the mounting groove 30 of the proximal cutting blade holder 23 is the same. to, with respect to a plane perpendicular to the axis P, the inclination angle beta (e.g. 20 ° to 40 ° obtained by adding the inclination angle theta ₁ and the inclination angle α of the above, preferably 30
°). If the inclination angle β is smaller than 20 °, the biting of the first blade portion 16 into the end surfaces of the outer conductor 53 and the insulator 52 becomes shallower, and the helical pitch of the separation of the outer conductor 53 and the insulator 52 becomes smaller. There is a risk of being torn off on the way. When the inclination angle β is larger than 40 °, the first blade 16
As a result, the bite of the end surfaces of the outer conductor 53 and the insulator 52 due to the swelling increases, and it becomes difficult to peel off.

Further, as shown in FIGS. 2, 4 and 9, when viewed from the axial direction, a corner where the cutting edge 18 of the first cutting portion 16 of the distal cutting blade 3 and the cutting edge 19 of the second cutting portion 17 intersect. Part (corner) 45
Protrudes into the holder member 2 and to a position where the outer sheath 53 does not hit the outer conductor 53 when the outer sheath 54 is peeled off. When viewed from the axial direction, a corner (corner) where the cutting edge 18 of the first cutting portion 16 of the proximal cutting blade 4 and the cutting edge 19 of the second cutting portion 17 intersect.
45 protrudes into the holder member 2 and to a position where the outer conductor 53 and the insulator 52 do not contact the inner conductor 51 when the insulator 52 is peeled off.

As shown in FIGS. 1, 5 and 6, the chamfer blade 5
Consists of an equilateral triangular chip body. Reference numeral 34 denotes a mounting block 34 formed in an L shape when viewed from the axial direction.
The holder member 2 is attached to the distal end surface 35 of the bearing housing case 12 with bolts. And this mounting block
A chamfering blade 5 is attached to a fitting recess 36 provided in the bolt 34 by bolts, and one triangular top 37 of the chamfering blade 5 is
It is located near.

As shown in FIGS. 5 and 12, the inner conductor guide shaft 6 includes a roller portion 38 at a base end and a shaft body 39 protruding from the roller portion 38 toward the distal end. Part 38
The tapered shaft portion 39a is connected to the thin shaft portion 39a, the thick shaft portion 39b extending from the thin shaft portion 39a to the distal end side via the step portion, and the tapered shaft portion 39c whose diameter is reduced from the thick shaft portion 39b to the distal end side. At this time, the outer diameter of the thick shaft portion 39b is set substantially equal to the inner diameter of the inner conductor 51 (see FIG. 16) of the coaxial cable 50. The inner conductor guide shaft 6 has its roller portion 38
Is a concave portion 12a of the bearing housing case 12 of the holder member 2.
The shaft body 39 is rotatably held around the axis P via a bearing member 40, and the shaft main body 39 passes through the hole 12b.
Is inserted into the center hole 9.

As shown in FIGS. 1 and 5, reference numeral 8 denotes a rotary tool mounting shaft having a flange portion connected to the outer ring of the bearing member 40. Rotating tool such as hand drill for tool mounting shaft 8
By inserting and fixing to the rotating shaft 42a of 42, the rotating tool
At 42, the holder member 2 and the guide cylinder 1 can be rotated via the rotary tool mounting shaft 8.

As shown in FIG. 3, FIG. 5, FIG. 6, and FIG. 13 (a) and (b), the stopper member 7 has a shape obtained by cutting a circular plate having a boss at the center in half, and has a semicircular shape. The semicircular plate portion 43 includes a plate portion 43 and a gutter-shaped stopper main body 44 projecting at a right angle to the middle of the right side portion of the semicircular plate portion 43. The semicircular plate portion 43 has a bolt insertion hole.
The stopper member 7 has its semi-circular plate portion 43 attached to the tip end surface 35 of the bearing housing case 12 of the holder member 2 with bolts, and the concave groove 44a of the stopper body 44 with the shaft body 39 of the internal conductor guide shaft 6. Along the thin shaft portion 39a. At this time, the front end contact surface 47 of the stopper main body 44 is closer to the base end than the thick shaft portion 39b of the shaft main body 39 and the triangular apex portion 37 of the chamfer blade 5 is formed.
In the vicinity of.

Next, the operation of processing the end of the coaxial cable 50 using the coaxial cable terminal processing apparatus of the present invention will be described.
As shown in FIGS. 1, 2 and 14, first, the base rotating tool mounting shaft 8 protruding from the bearing housing case 12 of the holder member 2 is inserted and fixed to the rotating shaft portion 42 a of the rotating tool 42. . A coaxial cable 50 is provided in the center hole 9 of the guide cylinder 1.
Of the inner conductor guide shaft 6 into the inner conductor 51. Thereby, the axis of the coaxial cable 50 coincides with the axis P of the processing device.

Thereafter, the rotary tool 42 is driven to move the holder member 2 provided with the distal-side cutting blade 3, the proximal-side cutting blade 4, the chamfering blade 5 and the like, the guide cylinder 1 around the axis P ( While rotating in the direction of arrow G), the processing device is pressed toward the coaxial cable 50 (in the direction of arrow H) via the rotary tool 42 or the coaxial cable 50 is pushed into the guide cylinder 1. Then, a part of the end surface of the outer sheath 54 comes into contact with the cutting edge 18 of the first blade portion 16 of the distal cutting blade 3 protruding inwardly, and the first blade portion 16 bites into the outer sheath 54. As the rotation further proceeds, the cut end of the outer sheath 54 is raised by the second blade portion 17 and separated from the outer conductor 53 to the outer diameter side. Then, the cutting by the first blade portion 16 inclined at a predetermined inclination angle β and the separation from the external conductor 53 by the second blade portion 17,
The outer sheath 54 is peeled off spirally. At this time, if the processing device side is strongly pushed into the coaxial cable 50 only in the initial stage of peeling, the coaxial cable 50 feels like being sucked into the guide cylinder 1 thereafter, so that the peeling can be performed with a small pushing force. . Also, the shaft body of the inner conductor guide shaft 6
39 is sequentially inserted into the inner conductor 51 to perform axial alignment, thereby performing a stable peeling operation, and the inner surface of the inner conductor 51 is not damaged because the guide shaft 6 does not rotate.

Then, the end of the coaxial cable 50 from which the outer sheath 54 has been peeled further enters the inside of the holder member 2 toward the base end, and as shown in FIG. 3, FIG. 4 and FIG. When the blade 4 comes into contact with the cutting edge 18 of the first blade portion 16, the first blade portion 16 bites into the end surfaces of the outer conductor 53 and the insulator 52. Second blade 17
And separated from the inner conductor 51 to the outer diameter side. Then, the outer conductor 53 and the insulator 52 are spirally peeled off by the cutting at the predetermined inclination angle β by the first blade portion 16 and the separation from the inner conductor 51 by the second blade portion 17.

Thereafter, the end of the inner conductor 51, which has been exposed by peeling off the outer conductor 53 and the insulator 52, further enters the base end side, as shown in FIG. 5, FIG. 6, FIG. 16, and FIG. Then, the end surface 55 of the inner conductor 51 is in sliding contact with the inclined surface portion 46 near the triangular apex portion 37 of the chamfering blade 5 and inclined at a predetermined inclination angle with respect to the axis P, and is chamfered. Immediately after that, the chamfered end surface 55 is the end contact surface of the stopper body 44 of the stopper member 7.
47 (see FIG. 13), the approach of the coaxial cable 50 to the processing device is stopped, but since the processing device continues to rotate, the spirally peeled outer sheath 54 is coaxially moved by the rotating distal cutting blade 3. The spirally peeled outer conductor 53 and the insulator 52 are separated from the coaxial cable 50 by the rotatable proximal cutting blade 4 which is separated from the cable 50.

Then, when the rotation of the rotary tool 42 is stopped and the coaxial cable 50 is pulled out of the guide cylinder 1, as shown in FIG. the outer conductor 53 is exposed by dimension L _3, and the inner conductor from the end surface of the outer conductor 53 and the insulator 52 at a predetermined dimension L ₂
The terminal processing in which the 51 is exposed and the end surface 55 of the internal conductor 51 is chamfered has been performed, and the terminal processing operation ends. Therefore, in the processing apparatus, the outer conductor 53 and the inner conductor 51 have such protrusion dimensions L ₃ and L ₂ , and
The axial distance between the distal cutting blade 3 and the proximal cutting blade 4 and the axis between the proximal cutting blade 4 and the stopper member 7 (or the chamfering blade 5) so that the end face 55 of the 51 is chamfered. Direction spacing is set.

As shown in FIGS. 10 and 11, the distal-side cutting blade holder 22 and the proximal-side cutting blade holder 23 are formed in a half-circular disk shape to reduce the weight and to reduce the weight of the holder member. 2, there is an advantage that the alignment of the shaft center becomes easy. That is, if each of the holders 22 and 23 is circular,
When they are connected by a connection frame, they become H-shape as a whole when viewed from the side, so that each part is eventually made up for ease of manufacture. However, this makes it difficult to align the axes of the circular holders 22 and 23 and the axes of the cables and the holders 22 and 23, and the rotation of the distal-side cutting blade 3 and the proximal-side cutting blade 4 causes the rotation of the cable with respect to the cable. This tends to cause the problem of eccentricity. Further, by forming the distal-side cutting blade holder 22 and the proximal-side cutting blade holder 23 into a half-arc-shaped disk, there is an advantage that the workability of the mounting grooves 25 and 30 becomes easier as compared with a circular case. is there. In addition, the distal side cutting blade 3 and the proximal side cutting blade 4
Are fitted into the mounting grooves 25, 30 exactly, so that even when a force is applied to the cutting blades 3, 4 during use, the mounting screws do not rattle or loosen the screw holes. 4 does not wobble.

The present invention is not limited to the above embodiment. For example, the inclination angles θ ₁ , θ ₂ , θ ₃ of the distal-side cutting blade ₃ and the proximal-side cutting blade ₄ and the distal-side cutting blade holder 22 And the inclination angle α of the base-side cutting blade holder 23 can be freely changed depending on the type of the coaxial cable 50 and the like.

[0031]

Since the present invention is configured as described above, the following effects can be obtained.

(According to claim 1) High-frequency coaxial cable
At the end of 50, a predetermined dimension L _{3 is} measured from the end face of the outer sheath 54.
The outer conductor 53 is exposed, and the outer conductor 53 and the insulator 52
The terminal processing the inner conductor 51 is exposed at a predetermined length L ₂ from the end face, it can be performed a short time and safely without requiring skill. At this time, since the axis of the processing apparatus and the axis of the coaxial cable 50 are aligned by the inner conductor guide shaft 6, the distal cutting blade 3 and the proximal cutting blade 4 may be eccentrically rotated with respect to the coaxial cable 50. The outer sheath 54 can be reliably and stably peeled off without damaging the outer conductor 53, and
The outer conductor 53 and the insulator 52 can be reliably and stably peeled without damaging the inner conductor 51.

(According to claim 2) a high-frequency coaxial cable
At the end of 50, a predetermined dimension L _{3 is} measured from the end face of the outer sheath 54.
The outer conductor 53 is exposed, and the outer conductor 53 and the insulator 52
The inner conductor 51 is exposed at a predetermined length L ₂ from the end face of and
The terminal processing in which the end face 55 of the internal conductor 51 is chamfered can be performed safely in a short time without skill.
At this time, since the center of the coaxial cable 50 is aligned with the processing apparatus by the inner conductor guide shaft 6, the distal cutting blade 3,
The base side cutting blade 4 and the chamfering blade 5 do not rotate eccentrically with respect to the coaxial cable 50, and can reliably and stably peel off the outer sheath 54 without damaging the outer conductor 53. The outer conductor 53 and the insulator 52 can be reliably and stably peeled without damaging the end surface 55 of the inner conductor 51.
Can be chamfered uniformly.

According to the third aspect, the structure can be simplified and reduced in weight, and the rotational balance can be maintained. In the peeling operation in which the holder member 2 is rotated, the inner conductor guide shaft 6 does not rotate, so that the inner surface of the inner conductor 51 is not damaged.

[Brief description of the drawings]

FIG. 1 is an external view showing an outer peripheral surface side of a coaxial cable terminal processing apparatus according to the present invention.

FIG. 2 is a sectional view taken along line AA of FIG.

FIG. 3 is another external view showing the outer peripheral surface side of the processing apparatus.

FIG. 4 is a sectional view taken along line BB of FIG. 3;

FIG. 5 is a partial cross-sectional view showing an outer peripheral surface side of the processing apparatus.

FIG. 6 is a sectional view taken along line CC of FIG. 5;

FIG. 7 is an explanatory view showing a shape structure of a guide cylinder.

FIG. 8 is an explanatory diagram showing a shape structure of a holder member.

FIG. 9 is an explanatory view showing the shape and structure of a distal cutting blade and a proximal cutting blade.

FIG. 10 is an explanatory diagram illustrating a shape structure of a distal-side cutting blade holder.

FIG. 11 is an explanatory view showing a shape structure of a base end side cutting blade holder.

FIG. 12 is a side view showing an inner conductor guide shaft.

FIG. 13 is an explanatory diagram showing a shape structure of a stopper member.

FIG. 14 is a cross-sectional view of a main part showing a state where the outer sheath is peeled off by the distal-side cutting blade.

FIG. 15 is a cross-sectional view of a main part showing a state in which an outer conductor and an insulator are peeled off by the proximal cutting blade.

FIG. 16 is a fragmentary cross-sectional view showing a state where an end surface of an internal conductor is chamfered by a chamfering blade.

FIG. 17 is a half sectional view showing an end portion of a coaxial cable which has been subjected to terminal processing.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 guide cylinder 2 holder member 3 distal cutting blade 4 proximal cutting blade 5 chamfer blade 6 inner conductor guide shaft 7 stopper member 16 first blade portion 17 second blade portion 22 distal cutting blade holder 23 proximal side Cutting blade holder 50 Coaxial cable 51 Inner conductor 52 Insulator 53 Outer conductor 54 Outer sheath 55 End face P Axis

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Nobuyoshi Matsuda 37-shi Ishizuka Warri, 37, Shirakata-cho, Fukui City, Fukui Prefecture Inside the Fukui Works, Mitsubishi Electric Industries Co., Ltd. (72) Inventor Etsuro Mami Shirakata, Fukui City, Fukui Prefecture 37-cho, Ishizuka-wari, Machi-cho, F-term, Mitsubishi Electric Cable Industry Co., Ltd. F-term (reference) 5G323 EA02 5G353 AB01 AC02 CA02 DA06 EA02

Claims (4)

[Claims] 1. A coaxial cable comprising a cylindrical inner conductor, an insulator covering the inner conductor, an outer conductor comprising a ring-shaped corrugated tube covering the insulator, and an outer sheath covering the outer conductor. A terminal processing apparatus for performing terminal processing for attaching a connector to a guide cylinder, wherein an end of a coaxial cable is inserted and an outer peripheral surface of the outer sheath slides on the guide cylinder, and a proximal end in the axial direction of the guide cylinder. A first blade portion cuts the outer sheath in a helical manner by rotation of the holder member around an axis, and a second blade portion. An L-shaped distal cutting blade for separating the outer sheath from the outer conductor to the outer diameter side, and a predetermined distance from the holder member and closer to the axially proximal end than the distal cutting blade. Due to the rotation of the holder member around the axis, An L-shaped base-side cut in which a first blade portion spirally cuts the outer conductor and the insulator and a second blade portion separates the outer conductor and the insulator from the inner conductor to an outer diameter side. A blade, an inner conductor guide shaft which is provided at an axial position of the holder member and is inserted into the inner conductor to align the axis of the coaxial cable, and a base end in the holder member and which is more axial than the base side cutting blade. A stopper member that is provided at a predetermined distance on the side and abuts the end surface of the internal conductor,
A coaxial cable terminal processing apparatus comprising: 2. A coaxial cable comprising: a cylindrical inner conductor; an insulator covering the inner conductor; an outer conductor comprising a ring-shaped corrugated tube covering the insulator; and an outer sheath covering the outer conductor. A terminal processing apparatus for performing terminal processing for attaching a connector to a guide cylinder, wherein an end of a coaxial cable is inserted and an outer peripheral surface of the outer sheath slides on the guide cylinder, and a proximal end in the axial direction of the guide cylinder. A first blade portion cuts the outer sheath in a helical manner by rotation of the holder member around an axis, and a second blade portion. An L-shaped distal cutting blade for separating the outer sheath from the outer conductor to the outer diameter side, and a predetermined distance from the holder member and closer to the axially proximal end than the distal cutting blade. Due to the rotation of the holder member around the axis, An L-shaped base-side cut in which a first blade portion spirally cuts the outer conductor and the insulator and a second blade portion separates the outer conductor and the insulator from the inner conductor to an outer diameter side. A blade, a surface provided on the holder member at a predetermined distance axially closer to the base end than the cutting blade on the base end side, and slidably in contact with the end surface of the internal conductor when the holder member is rotated about the axis, and chamfers the surface. A cutting blade, an inner conductor guide shaft provided at an axial center of the holder member and inserted into the inner conductor to align the axis of the coaxial cable; A coaxial cable terminal processing device, comprising: a stopper member provided on an end side with a predetermined distance therebetween to stop a chamfered end surface of an internal conductor. 3. An arc-shaped tip-side cutting blade holder for holding a distal-side cutting blade and a circular-disk-shaped base-side cutting blade holder for holding a proximal-side cutting blade. 3. The coaxial cable end processing device according to claim 1, wherein the coaxial cable terminal processing device is attached to a holder member at a symmetric position. 4. The coaxial cable end processing apparatus according to claim 1, wherein the inner conductor guide shaft is rotatable with respect to the holder member.