JPH01129705A - Termination device for coaxial cable - Google Patents

Abstract

PURPOSE:To obtain a small device for enabling accurate work without requiring skill, by providing a cable holder for holding a coaxial cable and a tool holder for holding and rotating a tool. CONSTITUTION:A tool holder 51 is positioned at right end side then a clamp lever 33 is raised and a clamp chip 32 is positioned above through a spring 34 so as to release cable clamping force. Then a cable 10 is inserted into a cable insertion hole 22 of a cable holder support 2 so as to contact the tip of the cable 10 through a cable receiving hole 31' of a cable holder 31 with edge section 61 of tool. Then the clamp lever 33 is tilted to press the clamp chip 32 so as to clamp the cable 10 with the cable holder 31. Upon rotation of a handle 70, the edge section 61 of tool bites into the end face of the cable 10 so as to cut an outer conductor 11 and a dielectric body 12. The edge section 61 self-advances rearward at this time and the flange section 53 at the front end of the tool holder 51 stops at a position contacting with the front face of the tool holder body 4, thus completing cutting work.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a coaxial cable terminal processing device. In particular, it relates to a terminal processing device for processing a coaxial cable having a tubular outer conductor made of a semi-hard metal material such as copper, that is, a semi-rigid cable, in order to connect the terminal to a coaxial connector, etc. be.

(Prior Art and Problems) Conventionally, this type of coaxial cable terminal processing device has performed terminal processing using a small metal cutting lathe device. However, terminal processing using such a lathe device has the following problems.

■ The operation of metal cutting lathe equipment itself required skill, and terminal processing was not easy.

■ The tubular outer conductor of a coaxial cable is made of a semi-hard metal material and has a dielectric part inside, so it has low rigidity, so machining it on a lathe is extremely difficult, resulting in poor processing accuracy and many defective products. was.

■ Metal cutting lathe equipment fixes the cutting tool and rotates the coaxial cable, which is the processing material, so it was not possible to process long coaxial cables.

■ Even a small metal cutting lathe device has a considerable weight and size, so it cannot be easily carried around and cannot be easily carried to a wiring site or the like.

(Means and effects for solving the problems) The present invention solves the problems of the conventional devices as described above, and provides a coaxial cable terminal processing device that is small, simple, and can be processed with high precision without requiring any skill. is intended to provide.

In order to achieve the above object, the present invention provides a cable holder having a cable receiving hole through which an end portion of a coaxial cable is inserted and guided and held, and a cutting process for the end portion of the coaxial cable guided and held in the cable holder. This is achieved by having a tool holder for holding a tool for rotating the tool and for rotating the tool.

According to the present invention, when the cutting tool holder is manually rotated, the cutting tool whose cutting edge is set at a predetermined depth position moves around the coaxial cable guided by the cable receiving hole and protruding by a predetermined length. Only a certain amount will be cut.

(Embodiment) Next, a first embodiment of the present invention will be described in detail based on FIGS. 1 to 3 of the accompanying drawings.

Fig. 1 is a partially sectional front view of an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ of Fig. 1, and Fig. 3 is an enlarged perspective view showing the main part of the coaxial cable terminal processing. It is a diagram.

1 and 2 show a coaxial cable terminal processing device as an embodiment of the present invention, in which a cable holder support 2 is fixed on a base 1.
A tool holder support 4 is attached to the tool.

The cable holder support 2 has a recess 21 in the upper right half that is approximately U-shaped in a plane perpendicular to the plane of the paper, and a guide that stands up above the bottom surface 23 of the recess 21 in the upper left half. A portion 22 is formed. The guide portion 22 is provided with a cable insertion hole 22A extending laterally, and the cable holder 3 has a cable receiving hole 31' formed in the recess 21 and communicating with the cable insertion hole 22.
1 is provided. As shown in the figure, the right side portion of the cable holder 31 has a small diameter cylindrical portion 318, and the left side portion has a large diameter semicircular portion 31B extending downward. The small diameter cylindrical portion 318 has the cable receiving hole 31''.
A semicircular groove continuous to the cable receiving hole 31' is formed on the upper surface of the large diameter semicircular portion 31B. This cable holder 31 is constructed such that the small diameter cylindrical portion 31A is centered by a bite holder 51, which will be described later, and the cable receiving hole 31' (and semicircular groove) is connected with the axis of the cable insertion hole 22A. It's starting to get through.

Inside the recess 21, there is a clamp piece 32 having a semicircular groove on the lower surface for clamping the cable lO inserted into the cable receiving hole 31'' of the cable holder 31 from above through the cable insertion hole 22A. A clamp lever 33 is disposed on the upper surface of the circular part 31B, and above the clamp lever 33 is a shaft 33' for pressing and moving the clamp piece 32 downward.
A clamp piece 3 is provided so as to be rotatable around the
2 is pressed upward by a spring 34 housed in a recess that opens upward in the large-diameter semicircular portion 31 of the cable holder 31. The clamp lever 33 has a cylindrical portion centered on the shaft 33', and its radius increases or decreases depending on the angle so that the outer periphery forms a spiral. The clamping piece 32 can be pressed downward under its increasing radius due to the movement.

The tool holder support 4 is fixed to the cable holder support 2 by screws 42, and above the tool holder support 4 is a tool holder 51 that receives the small diameter cylindrical portion 31A of the cable holder 31. A rotatably supported opening 41 is provided.

The bite holder 51 has a receiving opening 5 in its center shaft portion for guiding and receiving the small diameter cylindrical portion 31A of the cable holder 31.
2 has a flange portion 53.2 at the front right end and rear left end of its outer periphery for restricting the movement of the tool holder 51 in the front and back direction.
54 is formed. A cutting tool holding groove 55 extending in the radial direction from the outer periphery of the cutting tool holder toward the receiving opening 52 is formed at a rear position of the collar portion 53 at the front end, into which a cutting tool 60 is inserted and held. The tool holding groove 55
A set screw hole 56 is provided in which a set screw 65 communicating in the axial direction is screwed, and the set screw 65 is used to fix the tool 60 to the tool holder.

Further, the cutting tool holder 51 is provided with through holes 57A and 57B at upper and lower positions that extend radially inward from the outer periphery and penetrate into the receiving opening 52. This through hole 57 serves as a confirmation window for checking the position of the tip of the cable 10 or the state of the cutting tool 60, and especially the lower through hole 57
B also serves as a window through which chips from cutting the outer conductor and dielectric material of the coaxial cable fall.

A crank-shaped handle 70 is attached to the front end of the tool holder 51 with a screw 73.

This handle 70 is formed by an arm part 71 and a grip part 72, and when the handle 70 is manually rotated, the tool holder 51 and the tool 6 connected to it are rotated.
0 rotates.

Next, the cutting tool 60 held by the cutting tool holder 51
The details will be explained using FIG. This cutting tool 60 is formed of a blade part 61 and a base part 62, and the blade part 61 is
It has a cutting edge that extends in the radial direction, and a cutting surface 61' including the cutting edge is inclined toward the cutting edge in the cutting tool feeding direction (to the left) with respect to a plane perpendicular to the axis. As described above, its cross section has a substantially triangular shape. Therefore, while the cutting tool 60 is in contact with the end surface of the cable, the blade portion 61
(Blade edge) cuts into the end face of the cable to spirally cut the outer conductor 1) which is a metal material and the dielectric material 12 which is an insulating material inside it, and the blade part 61 is the axis of the reaction force received by the cutting surface 61'. It will naturally move in the direction of arrow A due to the directional component.

Note that the cutting tool 60 is set in advance so that its radial tip is at a slightly larger radius position than the radius of the center conductor of the cable.

The terminal processing procedure of the coaxial cable terminal processing apparatus of this embodiment configured as described above will be explained.

■ First, position the tool holder 51 on the right (front) end side, set the clamp lever 33 vertically, and position the clamp piece 32 upward by the force of the spring 34 to release the cable clamping force. The lO is inserted through the cable insertion hole 22 of the cable holder support 2, and the tip of the cable passes through the large cable receiving hole 31' of the cable holder 31 and comes into contact with the blade part 61 of the cutting tool. In this state, the clamp lever 33 is turned sideways and the clamp piece 32 is pushed downward to clamp the cable 10 with the cable holder 31.

(2) Next, rotate the handle 70 in a predetermined direction. Then, the blade part 61 of the cutting tool that is in contact with the end face of the cable bites into the end face of the cable 10, and the external sensing element 1) and the dielectric body 1
2 will be cut. At this time, the blade 61 automatically cuts backward as described above, and the cutting tool holder 5
The flange 53 at the front end of the cutting tool 1 stops at the position where it comes into contact with the front surface of the cutting tool holder holder 4, and cutting is completed. After that,
Stand the clamp lever 33 vertically, release the cable clamp, and take out the cable 10.

■ At the end of the taken-out cable 10, a portion of the dielectric 12 remains in the form of fjIFi on the center conductor, so it is necessary to remove this with a very simple tool (not shown) and damage the center conductor. It becomes possible to connect to the center contact of a coaxial connector, etc. without exposing it.

Next, a second embodiment of the present invention will be described based on FIGS. 4 and 5. In this embodiment, cables 10 of various thicknesses are used.
It is characterized by being compatible with Semi-rigid cables come in various thicknesses, so it is necessary to accommodate them. The one shown in Figure 4 is a replacement holder °39A that can be attached to and removed from the cable holder 31゜.
It is. Cable receiving hole 39 of the replacement holder 39A
A plurality of 8° diameters are prepared corresponding to the diameters of various cables 10. Thus, if the replacement holder 39A is replaced as shown in FIG. 5 according to the diameter of the cable, usability will be greatly improved.

Next, in the third embodiment shown in FIG. 6, the cutting length 6 of the cable (cutting amount in the axial direction) and the feeding amount of the cutting tool (cutting amount in the radial direction) can be made variable. can.

First, regarding the cutting length, for example, screw an adjustment screw 80B as a tool movement distance adjusting means into the front end flange 53B of the tool holder, and then set the tip of the adjustment screw 80B on the front surface of the tool holder support 4B. If you lock it with 81B, the amount of axial movement of the cutting tool, that is, when the cable is inserted into the cable pull insertion hole, the tip of the cable comes into contact with the cutting tool, so that it automatically changes. The defined cutting length of the cable can be set arbitrarily.

On the other hand, as for the amount of feed of the cutting tool, for example, as the cutting depth adjusting means, it is possible to use adjustment/measuring means 90B such as a micrometer, which is capable of moving the cutting tool while finely adjusting it in the radial direction. In the same figure, a set screw 91B fixes the cutting tool 60B from the side.
60B can be moved, and the pie)
A compression spring 92B is provided to compress 60B radially outward,
The adjusting/measuring means 90B may be set to push 60B radially inward against the force of the compression spring 92B. As a result, the feeding amount of the pi) 60B can be set to a predetermined value while being measured by the adjusting and measuring means.

Thereafter, at the set position, the set screw is loosened to fix the cutting tool at the set position.

According to this embodiment, even if the cable diameter changes, the dielectric can be left as a predetermined thin layer during cutting, and the thin layer can be reliably and easily removed to a predetermined thickness without damaging the central conductor. becomes possible.

Next, in the fourth embodiment shown in FIG. 7, without using the specially shaped bit used in the first embodiment,
Ordinary bytes can be used.

That is, the cutting tool in the first embodiment was designed to automatically move in the axial direction by the force acting on the inclined cutting surface during cutting, but in this embodiment, the cutting tool holder 51
C is guided and supported by the threaded surface 91C of the tool holder support 4C, and the tool holder 5IC moves in the axial direction along the threaded surface 91C by being rotated. Therefore, the cutting tool itself does not need to be formed so as to generate a particular forward force.

In each of the above-described embodiments, the rotation of the tool holder was performed using a manually rotated handle, but the present invention is not limited thereto, and electric power, air power, or other power may be used.

(Effects of the Invention) According to the coaxial cable terminal processing device of the present invention as described above, the following effects can be obtained.

■ The handling and processing of the device is very simple, anyone can easily do it without requiring any skill, and the accuracy is improved, eliminating the occurrence of defective products.

■ Even if the tubular outer conductor of a coaxial cable is made of a semi-hard metal material that is difficult to cut, the rotating cutting tool makes it possible to easily cut the cable without deforming it.

■ Since the cutting tool rotates and the cable is fixed, it is possible to easily cut any length of cable.

■ Since it can be made small and lightweight, it can be easily carried and carried to wiring sites, etc.

[Brief explanation of the drawing]

FIG. 1 is a partially sectional front view of the device according to the first embodiment of the present invention, FIG. 2 is a cross-sectional view taken along the line ■-■ in FIG. 1, and FIG. FIG. 4 is a perspective view of a replacement holder in the second embodiment, FIG. 5 is a partially sectional front view of the device of the second embodiment, and FIG. 6 is a perspective view of the third embodiment. FIG. 7 is a partially sectional plan view of the apparatus of the embodiment, and FIG. 7 is a partially sectional front view of the apparatus of the fourth embodiment. ■・・・・・・・・・Base 31・・・・・・Cable holder 31”...
...Cable receiving hole 398...Replacement holder 4...Bite holder support 51...
......Bite holder 60...Bite 80B...Bite moving path M adjustment means 90B...
...Patent applicant for tool cutting depth adjustment means
Representative of Hirose Electric Co., Ltd. Patent attorney
Toru Iooka Figure 3 Figure 4 Figure 5

Claims (6)

[Claims] (1) A cable holder having a cable receiving hole through which the end of the coaxial cable is guided and held, and a cutting tool for cutting the end of the coaxial cable guided and held by the cable holder; A coaxial cable terminal processing device comprising: a cutting tool holder for rotating the cutting tool. (2) The cutting tool has a cutting edge that extends in the radial direction, and the cutting surface including the cutting edge is inclined in the feeding direction of the cutting tool toward the cutting edge with respect to a plane perpendicular to the axis. A coaxial cable terminal processing device according to claim (1). (3) The cable holder is capable of incorporating various types of exchangeable holders having cable receiving holes corresponding to the cable diameter by replacing them.
1) The coaxial cable terminal processing device described in item 1). (4) The tool holder is provided with a tool moving distance adjusting means that has a locking means and whose tip abuts against the tool holder support.
1) The coaxial cable terminal processing device described in item 1). (5) The tool holder is provided with a tool cutting depth adjusting means that can feed the tool in the radial direction and measure the amount of feed, and has means for fixing the tool position. A coaxial cable terminal processing device according to scope item (1) or item (4). (6) One of claims (1), (4) and (5), characterized in that the tool holder is guided and supported by a threaded surface of the tool holder support. The coaxial cable terminal processing device described in .