JPH0340705A - Semirigid cable machining apparatus - Google Patents

Abstract

PURPOSE:To prevent burr or warp by setting a semirigid cable between a cutter and a guide roller fixed to a guide means in a drum then rotating the drum and pressing the cutter centrifugally. CONSTITUTION:Weight members 33, 34 slidable along a pair of guide members 31, 32, as shown on the drawing, are arranged in a rotary drum. A releasable support member 51 comprising a circular cutter 37 and a pair of guide rollers 50 is fixed to a guide means 52 arranged between the members 33, 34 then a semirigid cable 10 is set therein. The cutter 37 and the releasable support member 51 are energized outward by means of springs 39, 40 and an endless wire 41 is entrained around a cutter shaft 37a, a releasable support member shaft 52a and the weight members 33, 34, where the tension of the wire 41 is regulated by means of screws 35, 36 and wired 42, 43. Upon rotation of the drum 30, the weight members 33, 34 are pulled centrifugally outward and the cutter 37 abuts against the cable 10 and cuts the sheath.

Description

[Detailed Description of the Invention] Overview Regarding a semi-rigid cable processing device, a small and easy-to-work semi-rigid cable that can process semi-rigid cables without causing cracks, curls, etc., and that can be used at semi-rigid cable assembly and wiring sites. The purpose of the present invention is to provide a processing device, which includes a drum rotatably driven by a driving means, a pair of guide members fixed to the inner circumferential surface of the drum at a distance from each other, and guided by the guide members in the radial direction of the drum. A pair of movable weight members, a circular cutter movably attached to the drum in a radial direction, a circular cutter driving means for rotationally driving the circular force lid, and a support attached to the drum so as to be movable in the radial direction. a guide means formed by rotatably supporting a pair of guide rollers on a member; a pair of urging means for urging the circular force lid and the guide means in the direction of the opposing guide members; the weight member and the circular cutter. , and wire means endlessly linking the guide means.

Industrial applications The present invention relates to a semi-rigid cable processing device.

A semi-rigid cable is a type of coaxial cable, consisting of a cylindrical outer conductor (sheath) and a central conductor (core wire) in the middle, and is used as a high-frequency coaxial cable for radar equipment and the like. FIG. 4 is an explanatory view of the semi-rigid cable, with FIG. 4 (A) showing a sectional view of the semi-rigid cable, and FIG. 4 (B) showing a partially cutaway front view.

That is, the semi-rigid cable IO has a core wire 11 covered with a dielectric material 12, and further covered with a copper vibrator 13 which acts as an external conductor. There are various outside diameters of semi-rigid cables, but generally they are 2.2mm.

A diameter of 3.5 mm is often used.

Also, semi-rigid cables are processed and used as part of connectors. Figure 5 shows an example of semi-rigid cable processing. That is, the semi-rigid cable 10 is processed as a part of the female connector 14 as shown in FIG. 5(A), or it is processed as a part of the male connector 15 as shown in FIG. Use or (
C) The semi-rigid cable 10 is soldered to the connector 17 and its direction is changed by 90°.

Figure 6 shows an example of how semi-rigid cables are used.
For example, equipment module 18.19.20 such as radar equipment
In order to connect between the two, a semi-rigid cable 10 is formed three-dimensionally and used. That is, a semi-rigid cable has a jacket made of a copper pipe, so it is rigid and can be formed into three-dimensional shapes. As shown in FIG. 5, when a semi-rigid cable is processed as part of a connector, it is necessary to remove the copper pipe and dielectric material to expose the core wire. During this processing, it is necessary to process the semi-rigid cable so that the copper pipe does not have any cracks or curls.

BACKGROUND ART FIG. 7 shows a conventional semi-rigid cable processing process diagram. First, cut the semi-IJ Conorad cable 10 as shown in ■, and then solder the shell 21 in step ■, or remove the copper pipe 13 and dielectric 12 as in step ■'' and connect the core wire. 11 about 2°3mmfE!
Let it come out. Next, in the case of (1), cut the copper vibrator 13 and the dielectric 12, and then proceed to (2).

In the case of (2), the shell 21 is soldered to obtain the state (2).

Next, in step (2), the tip of the core wire 11 is polished at 60°, and in step (2), the sleeve 2 is attached to the shell 21.
2 to complete the female connector 14 shown in FIG. 5(A). An important point in processing a semi-rigid cable as described above is that when cutting the outer sheath (copper pipe) 13, it is necessary to process the semi-rigid cable so that no cracks or burrs appear on the inside.

There are three conventional processing methods for removing the jacket and dielectric of a semi-rigid cable to expose the core wire, as shown in FIG. That is, as shown in FIG. 8 (8), the semi-rigid cable 10 is inserted into the jig 23 having the groove 23a,
A method of cutting by inserting the jig saw 24 into the mechanism 23a, or (B
) As shown in the figure, a small lathe 25 and a cutting tool 26 are used to
There is a method of machining as shown in Figure 1, or a method of machining as shown in Figure 2 with a vibrator cutter 27 as shown in (C).

Problems to be Solved by the Invention However, the conventional processing method as shown in FIG. 8 has the following problems.

First, as shown in Fig. 8(A), in the case of the method of machining with a jig saw, (a) the cut surface of the jig saw is rough, resulting in a decrease in performance.

) There is a high possibility that the copper vibrator 13, as shown in FIG. 9, will come out inside the semi-rigid cable.

(C) Workability is poor and variations occur depending on the operator.

In the case of the lathe processing method shown in Figure 8(B), (a) both ends of the semi-rigid cable must be processed in a straight line, so cash processing cannot be performed at the assembly site.

(b) Working at an electronic equipment assembly site is undesirable in terms of efficiency and safety.

In the case of the method of machining using a pipe cutter as shown in FIG. 8(C), (a) workability is poor and variations occur depending on the operator.

(w) There is a high possibility that a crack or a warp 28 of the copper pipe as shown in Fig. 9 will occur inside the semi-rigid cable.

The present invention has been made in view of these points, and its purpose is to be able to process semi-rigid cables without causing any breakage or curling, and to be able to process semi-rigid cables at assembly and distribution sites for semi-rigid cables. To provide a semi-rigid cable processing device that is small in size and has good workability.

Means for Solving the Problems A drum rotatably driven by a driving means, a pair of guide members fixed to the inner peripheral surface of the drum at a distance from each other, and guided by the guide members to move in the radial direction of the drum. A possible pair of weight members is provided.

Furthermore, a circular cutter movably mounted in the radial direction of the drum, a circular power lid driving means for rotationally driving the circular power lid, and a pair of guide rollers mounted on a support member movably mounted in the radial direction of the drum. a pair of urging means for urging the circular cutter and the guide means toward opposing guide members, respectively; and wire means linking to the.

Operation: When the semi-rigid cable to be processed is set between the pair of guide rollers of the circular cutter and the guide means and the drum is driven to rotate, the difference in centrifugal force between the circular cutter and the guide means and the weight member causes the circular cutter and the guide to be cut. The means is pressed against the semi-rigid cable and a cutting force is generated by rotationally driving the circular cutter. The circular cutter and guide means rotate around the semi-rigid cable at high speed, and the circular force cap cuts the semi-rigid cable to a predetermined depth. During cutting, a force corresponding to the force applied to the semi-rigid cable by the circular force cover is applied from the pair of guide rollers of the guide means, thereby preventing the semi-rigid cable from being misaligned.

The cutting force can be controlled by the rotational speed of the drum, the mass of the weight member, and the distance from the center. In other words, by using centrifugal force and changing the mass of the weight member, the distance from the center, and the rotation speed of the drum, the cutting force (pressing force) of the circular cutter is controlled, and the outer cover ( It is possible to reduce cracking, warping, etc. of the copper vibrator (copper vibrator) and improve accuracy and workability.

Incidentally, the present inventor has already proposed an arrangement in which the guide means in the present invention is replaced with a circular cutter, and the cutting is performed by a pair of circular cutters (Japanese Patent Application No. 1983).
3-166792), it was discovered that in this configuration, it was difficult to adjust the trajectories of the pair of circular cutters to be the same, and that if misalignment occurred, the cut surface would become unsightly.The present invention aims to improve this. It was added.

Embodiments The present invention will be explained in detail below based on embodiments shown in the drawings.

FIGS. 1A and 1B are views of an embodiment of the drum in a stopped state, in which FIG. 1A is a plan view and FIG. 1B is a partial sectional view of the main part. FIG. 2 is a plan view of the embodiment in a rotating state of the drum. 30 is a cylindrical drum, which is rotatably driven by a driving means (not shown). drum 3
A pair of guide members 31, 32 spaced apart from each other are fixed to the 0, and a pair of weight members (weights) '33, 34 are movable in the radial direction guided by these guide members 31, 32. It is provided. Although not particularly shown, it is desirable that a linear bearing or the like be provided on the sliding surfaces of the guide members 31, 32 and the weight members 33, 34. A notch 3 is provided approximately at the center of the outer periphery of the weight member 33.
3a is provided, and a rod screw 35 is screwed through the weight member 33 in the radial direction from this notch 33a. Similarly, a rod screw 36 is provided in the weight member 34 so as to penetrate therethrough in the radial direction.

'37 is a circular cutter supported by a fixed shaft 37a;
The circular cutter 37 is rotatably driven by a drive means (not shown) and is attached so as to be movable in the radial direction of the drum 30 along the elongated hole 45. A bearing mechanism such as a linear bearing is provided in the elongated hole 45.

52 is a guide means, and the guide means 52 is a fixed shaft 52
A pair of guide rollers 50 .
50 is rotatably supported on the bottom of the tank. The guide means 52 is mounted so as to be movable in the radial direction along the elongated hole 46.

A bearing mechanism such as a linear bearing is provided in the elongated hole 46.

The circular cutter 37 is biased toward the guide member 31 by a tension spring 39, and the guide means 52 is biased toward the guide member 32 by a nine tension spring 40. Circular cutter 37
A wire 41 is hung in an endless manner across the fixed shaft 37a of the guide means 52 and the fixed shaft 52a of the guide means 52, and the endless wire 41 is connected to the rod screw 35 by a wire 42, and connected to the rod screw 36 by a wire 43. has been done. This arrangement links the movements of the circular cutter 37, the guide means 52, and the weight members 33,34. The mass of the weight members 33 and 34 is larger than that of the circular cutter 37 and the guide means 52, and
0, the space formed by the circular cutter 37 and the pair of guide rollers 50, 50 of the guide means 52 is set to be larger than the outer diameter of the semi-rigid cable 10 to be processed.

However, when the drum 30 is rotated in the direction of the arrow in FIG. 2 by a driving means (not shown), the circular cutter 37, the guide means 52, and the weight members 33, 34 all try to spread outward due to centrifugal force, but the weight member Since the centrifugal force of the circular cutter 37 and the guide means 52 is larger than that of the circular cutter 37 and the guide means 52, the circular cutter 37 and the guide means 52 are pulled inwardly by the endless wire 41, and the distance between them is reduced toward the center, and the machining process is performed. is pressed against the semi-rigid cable 10. By rotationally driving the circular cutter 37 in the direction of the arrow shown in the figure by a circular cutter driving means (not shown), cutting is performed by the clamping pressure between the circular cutter 37 and the pair of guide rollers 50, 50 of the guide means 52 and the rotational force of the circular cutter 37. Force is generated, semi-rigid cable 10
disconnection will begin.

The cutting principle is similar to that of the pipe cutter shown in FIG.
．． Since the cutting force can be controlled by the mass of the cable 34 and the distance from the center, it is possible to minimize the occurrence of cracks or curls inside the jacket when cutting the semi-rigid cable 10. During cutting, a force corresponding to the force acting on the semi-rigid cable from the circular cutter 37 is applied to the guide means 5.
Since the pair of guide rollers 50, 50 of 2 act in the axial direction of the semi-rigid cable, bending etc. do not occur during processing, and highly accurate processing can be achieved.Furthermore, the circular cutter 37 and the guide Since the means 52 rotates around the semi-rigid cable 10 and the semi-rigid cable 10 can be processed while being fixed, the semi-rigid cable 10 can be processed in a state where it has been formed into a predetermined shape in advance, and this is a small processing device with good workability. can be provided.

The amount of biting of the circular cutter 37 into the semi-rigid cable 10 during cutting can be adjusted by rotating the rod screw 35.36, and the weight member 33.34
It is preferable to finish cutting the semi-rigid cable 10 leaving only the core wire at a position where the outer circumferential surface of the semi-rigid cable 10 contacts the inner circumference of the drum 30. That is, by appropriately adjusting the bar screws 35, 36, the weight members 33, 34 and the drum 3
The contact with 0 can be used as a stopper.

Next, with reference to FIG. 3, a calculation formula for the cutting force of the above-mentioned embodiment will be determined. Note that the circular cutter 37 and the guide means 52
center-of-gravity distance, mass, and tension spring for the drum 39.
It is assumed that the tensile forces of 40 are equal.

The distance of the center of gravity of the weight member with respect to the drum is r1 The distance of the center of gravity of the circular cutter with respect to the drum is r2 The speed of the weight member is Vl, where N is the number of rotations of the drum, =2πr, N Also, the speed V of the circular cutter is, V2 =2πrzN.

Also, the mass of the weight member is mI, and the mass of the circular cutter is m
2. The centrifugal force of the weight member is f'1%, the centrifugal force of the circular cutter is f2, and the tensile force of the tension spring is f'.

Then, the centrifugal force fl of the weight member is f + = mI V l' / r 1 The centrifugal force f2 of the circular cutter is f 2 = mx v2 '' / r 2. Therefore, the semi-rigid cable cutting force (the pressing force is Force〉F becomes F=(f+ −fx −f+)/lanθ.

From the Kono calculation formula, N Xm, , m2 , r, , r
The cutting force of the circular force lid can be arbitrarily determined by each of the parameters.

Effects of the Invention Since the semi-rigid cable processing apparatus of the present invention is constructed as described in detail above, it has the effect of being able to process a semi-rigid cable without causing any curls or curls. Moreover, since it is portable, it can be used at semi-rigid cable assembly and wiring sites, which has the effect of improving work efficiency.

[Brief explanation of drawings]

FIGS. 1(8) and 1(B) are views of an embodiment of the present invention with the drum stopped, where (^) is a plan view and (B) is a partially sectional view showing the main part. Figure 2 is a plan view of the embodiment in a drum rotating state, Figure 3 is a schematic diagram for calculating cutting force, Figure 4 is an explanatory diagram of a semi-rigid cable, (A) is a cross-sectional view, (B)
is a partially cutaway front view. Figure 5 is an explanatory diagram showing an example of processing a semi-rigid cable, (^) is a configuration used as a female connector, (B)
(C) is a configuration used as a male connector, 90°
Each configuration to be converted is shown. Figure 6 is a schematic diagram showing an example of the use of semi-rigid cables, Figure 7 is a process diagram of semi-rigid cable processing, and Figure 8 is a schematic diagram showing a conventional processing method. (A) uses a jig and a scroll saw. (B) shows a configuration using a small lathe, and (C) shows a configuration using a pipe cutter. FIG. 9 is a diagram illustrating the problems of the prior art. 0... Semi-rigid cable, 0... Drum, ゛ 31, 32 334... Weight member, 7... Circular cutter, 1... Endless wire, 0... Guide roller, 2... Guide means. guide member,

Claims (1)

[Scope of Claims] A drum (30) rotationally driven by a driving means, a pair of guide members (31, 32) fixed to the inner peripheral surface of the drum (30) at a distance from each other, and the guide members. Drum (30) guided by (31, 32)
A pair of weight members (33, 3) movable in the radial direction of
4); a circular cutter (37) mounted movably in the radial direction of the drum (30); a circular cutter driving means for rotationally driving the circular cutter (37); a pair of guide rollers (50, 50) on a support member (51) that is removably mounted;
a pair of urging means (52) for urging the circular cutter (37) and the guide means (52) toward the opposing guide members (31, 32), respectively; 39, 40), the weight members (33, 34), and a circular cutter (37).
, and wire means (41) endlessly linking the guide means (52).