JPS62241283A - Method and apparatus for scraping to finish molded insulating unit in cable joint - Google Patents
Method and apparatus for scraping to finish molded insulating unit in cable jointInfo
- Publication number
- JPS62241283A JPS62241283A JP8444686A JP8444686A JPS62241283A JP S62241283 A JPS62241283 A JP S62241283A JP 8444686 A JP8444686 A JP 8444686A JP 8444686 A JP8444686 A JP 8444686A JP S62241283 A JPS62241283 A JP S62241283A
- Authority
- JP
- Japan
- Prior art keywords
- insulator
- circumferential surface
- outer circumferential
- molded
- cutting
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 25
- 238000007790 scraping Methods 0.000 title 1
- 239000012212 insulator Substances 0.000 claims description 44
- 230000002093 peripheral effect Effects 0.000 claims description 10
- 239000004020 conductor Substances 0.000 claims description 9
- 238000005259 measurement Methods 0.000 claims description 4
- 238000003672 processing method Methods 0.000 description 9
- 238000003754 machining Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 238000000465 moulding Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229920003020 cross-linked polyethylene Polymers 0.000 description 1
- 239000004703 cross-linked polyethylene Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000009659 non-destructive testing Methods 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000002604 ultrasonography Methods 0.000 description 1
Landscapes
- Manufacturing Of Electrical Connectors (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、導体接続部上の補強絶縁層がモールド絶縁
体によって形成されるケーブル接続部において、モール
ド絶縁体を偏肉の無い状態に仕上げるための加工方法と
その方法に用いる仕上げ切削装置に関するものである。[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a method for finishing a molded insulator without uneven thickness in a cable connection portion where a reinforcing insulating layer on a conductor connection portion is formed of a molded insulator. The present invention relates to a processing method and a finishing cutting device used in the method.
絶縁層に架橋ポリエチレン等を用いた高電圧用ＣＶケー
ブルにおいては、導体接続部の外周に設ける補強絶縁層
を、信頼性確保のため、ゴムやプラスチックのモールド
絶縁体によって形成し、ケーブル絶縁層に一体化するこ
とが一般化している。In high-voltage CV cables that use cross-linked polyethylene, etc. for the insulating layer, the reinforcing insulating layer provided around the outer periphery of the conductor connection part is formed from a molded rubber or plastic insulator to ensure reliability. Integration is becoming more common.
このモールド絶縁体は、成形法の関係から偏肉が生じて
周方向に厚みが不均一になることを避けられないが、そ
の外面上には遮蔽用の外部半導電層を設けるので、偏肉
があると接続部の電気特性が不安定になり、従って、成
形後に外周面の削り加工を実施して、所定の厚みに仕上
げる必要がある。This molded insulator inevitably has uneven thickness due to the molding method, resulting in uneven thickness in the circumferential direction, but since an external semiconductive layer is provided on the outer surface for shielding, uneven thickness can be avoided. If this occurs, the electrical characteristics of the connecting portion will become unstable, and therefore, it is necessary to shave the outer circumferential surface after molding to finish it to a predetermined thickness.
その仕上げ加工法として周知なものには、（１） 後
述する本ｉ＠装置の削り工具とほぼ同一構成の削り工具
を金型で成形された絶縁体の外周面上で回転させて余肉
を取る方法、
（２） 特開昭５９−２２２０１１号にボされるよう
に、専用の工具を用いて先ずケーブルの外周面を基準に
した絶縁体の端部切削を行い、次に、その端部切削面を
基準にして中央部の外周面を削り、その後、端部と中央
部を基準にして残りの外周面を削る方法、
（３） 特開昭５９−１７７’ ８７７に示されるよ
うに、超音波探厚器でモールド絶縁体の厚みを測定しな
から偏肉を除去する方法等がある。Well-known finishing methods include (1) a cutting tool that has almost the same configuration as the cutting tool of this i@ device, which will be described later, is rotated on the outer peripheral surface of the insulator formed in a mold to remove the excess material; (2) As described in JP-A-59-222011, first cut the end of the insulator based on the outer peripheral surface of the cable using a special tool, and then cut the end. A method of cutting the outer circumferential surface of the center part based on the cutting surface, and then cutting the remaining outer circumferential surface with reference to the ends and the center part, (3) As shown in JP-A-59-177'877, There are methods such as measuring the thickness of the mold insulator with an ultrasonic thickness probe and then removing uneven thickness.
しかしながら、それ等の方法には、いずれも下記の欠点
が見られる。即ち、上記（１）の方法は、押出しモール
ド時に、導体接続部に対して成型用金型が扇心していた
場合、偏心した面を基準にして切削を行うことになるた
め、偏肉の除去ができない。However, all of these methods have the following drawbacks. In other words, in method (1) above, if the molding die is fan-centered with respect to the conductor connection part during extrusion molding, cutting is performed based on the eccentric surface, making it difficult to remove uneven thickness. Can not.
また、（２）の方法は、ケーブル外周面が、切削の正で
きず、は）の方法と同様に偏肉が残される確率が高い。In addition, in method (2), the outer peripheral surface of the cable cannot be cut properly, and there is a high probability that uneven thickness will be left as in method (a).
一方、（３）の方法は、超音波探厚器に削り工具を連動
させる必要があるため、偏肉除去率は高まる反面、装置
が大がかりなものになると云う欠点がある。On the other hand, method (3) requires the cutting tool to be linked to the ultrasonic thickness probe, so although the rate of uneven thickness removal increases, it has the disadvantage that the device becomes large-scale.
この発明は、これ等の問題対策として開発された加工方
法と切削装置である。The present invention is a processing method and a cutting device developed as a solution to these problems.
この発明は、上記の問題点を解決するため、センター位
置の調整可能なセンター出し治具を採用し、その治具を
、モールド絶縁体の偏心量が吸収された位置にセットし
てその外周面を基準にモールド絶縁体の少なくとも一部
の加工を行うようにしたところに特徴を有する。In order to solve the above problems, this invention employs a centering jig whose center position can be adjusted, and sets the jig at a position where the amount of eccentricity of the molded insulator is absorbed, and then The feature is that at least a part of the molded insulator is processed based on the above.
即ち、この発明の第１の加工方法は、第１図に示すよう
に、ケーブル１の導体接続部２と、その上に押出し等で
設けたモールド絶縁体３の偏心量１、−１２を予め測定
する。この測定は、Ｘ線や超音波を利用した既存の非破
壊検査技術によって可能である。That is, in the first processing method of the present invention, as shown in FIG. Measure. This measurement is possible using existing non-destructive testing techniques using X-rays and ultrasound.
次に、外周面が真円のセンター出し治具１ｏを、絶縁体
３の外周面を位置の計測基準にして絶縁体３の軸心から
その絶縁体の偏心方向と逆方向に偏心量相当分、つまり
ｄ、 −ｄ、、−ｔｌ−ｔ２となるように偏心させて絶
縁体近傍のケーブル上（図はコア４上）にセットし、こ
の後、治具１０の外周面を基準にして回転する削り工具
２０の刃物２１で絶縁体３の外周面を所定の外径に切削
することから成る。Next, the centering jig 1o whose outer peripheral surface is a perfect circle is moved from the axis of the insulator 3 by an amount equivalent to the eccentricity in the opposite direction to the eccentric direction of the insulator, using the outer peripheral surface of the insulator 3 as a position measurement reference. , that is, d, -d,, -tl-t2, and set it on the cable near the insulator (on the core 4 in the figure), and then rotate it with reference to the outer peripheral surface of the jig 10. The process consists of cutting the outer circumferential surface of the insulator 3 to a predetermined outer diameter using the blade 21 of the cutting tool 20.
また、この発明の第２の加工方法は、まず、第１の方法
に基いて絶縁体３の端部外周面のみを図の鎖線で小すよ
うに切削し、次に、工具２０をこの切削面３３上に移し
替え、切削面を基準にして回転する工具２０の刃物で残
りの外周面を切削することから成る。In addition, in the second processing method of the present invention, first, based on the first method, only the outer circumferential surface of the end of the insulator 3 is cut to be smaller as shown by the chain line in the figure, and then the tool 20 is The process consists of transferring the cutting surface onto the surface 33 and cutting the remaining outer circumferential surface with the blade of the tool 20 that rotates with the cutting surface as a reference.
これ等の方法によれば、絶縁体３が導体接続部２やケー
ブル絶縁体５に対して偏心していても、刃物２１の回転
中心が、治具１０によって導体接続部の軸心上にほぼ一
致せしめられているので、切削後の絶縁体厚みが１．＝
１２となる。According to these methods, even if the insulator 3 is eccentric with respect to the conductor connection part 2 or the cable insulator 5, the rotation center of the cutter 21 can be almost aligned with the axis of the conductor connection part by the jig 10. The thickness of the insulator after cutting is 1. =
It becomes 12.
ここで、第１の加工方法においては、絶縁体３の長さが
長い場合、図のように、削り工具２０を片持ちすると、
治具１０の長さが規制されるときに刃物が絶縁体３の他
端側迄届かなかったり、刃物の位置保持が不安定になっ
て加工精度が落ちたりするケースが考えられ、従って、
その防止のためには、第２図にホすように、静、縁体３
の両側にセンター出し治具１０をセットし、２つの治具
１ｔＪ、１０の外周面を基準にしてケーブル軸方向に移
動可能な刃物２１を回転させる削り工具２０を必要とし
、工具構造が複雑化する恐れがある。Here, in the first processing method, when the length of the insulator 3 is long, if the cutting tool 20 is cantilevered as shown in the figure,
When the length of the jig 10 is regulated, there may be cases where the cutter does not reach the other end of the insulator 3, or the position of the cutter becomes unstable and machining accuracy deteriorates.
To prevent this, as shown in Figure 2, it is necessary to
The centering jig 10 is set on both sides of the centering jig 10, and a cutting tool 20 that rotates a cutter 21 movable in the cable axis direction with reference to the outer peripheral surface of the two jigs 1tJ and 10 is required, making the tool structure complicated. There is a risk that
これに対し、第２の加工方法は、切削面８ａをガイドと
して工具２０を回転させながら徐々にケーブル軸方向に
移動させて絶縁体３の残りの部分の切削を行うので、前
述の心配はない。この第２の加工方法においても、治具
１０をつけ替えて絶縁体８の両端部のみを予め切削し、
次に、その両端部を基準にして特開昭５９−２２０１１
号に示されるような切削機で残部の表面を加工すること
が可能である。On the other hand, in the second machining method, the remaining portion of the insulator 3 is cut by rotating the tool 20 using the cutting surface 8a as a guide and gradually moving the tool 20 in the cable axis direction, so there is no need to worry about the above-mentioned problem. . Also in this second processing method, the jig 10 is replaced and only both ends of the insulator 8 are cut in advance,
Next, with reference to both ends, JP-A-59-22011
It is possible to machine the remaining surface with a cutting machine such as that shown in the issue.
次に、第３図は、上記センター出し治具１０の第１図の
Ａ−Ａ線に沿った断面を、一方、第４図及び第５図は、
削り工具２０の一例の正面と側面を示す図であって、こ
の発明の切削装置は、それ等の組合せから成る。Next, FIG. 3 shows a cross section of the centering jig 10 taken along line A-A in FIG. 1, while FIGS.
FIG. 2 is a front view and a side view of an example of a cutting tool 20, and the cutting device of the present invention is composed of a combination thereof.
センター出し治具１０は、半円筒部材１１ａの２個を対
向させ、ボルト１２やその他の着脱式クランプで互いに
固定した基体１１と、これに螺合した半径方向位置調整
ねじ１３ａの内端に、円弧状支え板１３ｂがフリー回転
状態に取付けられた構造の把持子１３の複数個から成る
。図の把持子は、ケーブル軸方向の２個所において、そ
れぞれ２個を対向配置しであるので、治具１０のセット
時にｔ、−Ｌ２の値が最大となる位置に把持子を配置し
てセンター調整を行うことができ、作業性に優れるが、
１個所にそれぞれ３個以上を周方向に所定のピッチ（例
えば等ピッチ）で配置してもよい。The centering jig 10 includes a base body 11 in which two semi-cylindrical members 11a are opposed to each other and fixed to each other with bolts 12 or other removable clamps, and an inner end of a radial position adjustment screw 13a screwed into the base body 11. It consists of a plurality of grippers 13 having a structure in which an arc-shaped support plate 13b is attached in a freely rotating state. The grippers shown in the figure are arranged in two positions facing each other in the cable axis direction, so when setting the jig 10, the grippers are placed at the position where the values of t and -L2 are maximum, and the center It can be adjusted and has excellent workability, but
Three or more pieces may be arranged at a predetermined pitch (eg, equal pitch) in the circumferential direction at one location.
この治具の基体１１を図のように２つ割りしておくこと
は必須ではないが、治具１０のケーブルに対する着脱性
を考えれば、２つ割りが望ましい。Although it is not essential to divide the base 11 of this jig into two as shown in the figure, it is desirable to divide the jig into two when considering the ease of attachment and detachment of the jig 10 to the cable.
削り工具２０は、周知の削り工具と同じものである。即
ち、第４図に示、すように、回転軸がほぼケーブル軸と
平行な３個以上（図は４個）のローラ２２を真円上に配
置したローラ群と、ローラ２２が転動するほぼ真円のガ
イド面を取巻くローラ群の支持フレーム２３と、刃先２
１ａを内端にしてそのフレームに半径方向にスライド自
在に取付けた刃物２１と、フレーム２３を回転させるた
めに、そのフレームにほぼ中心軸対称に取付けたハンド
ル２４から成る。図のフレーム２３は、半環状部材２３
ａの２個を、一端側で、ねじ軸２３ｂを通す長孔のつい
たスライド板２３Ｃ及び一方の部材とスライド板との間
に配した蝶番２３ｄを介して連結し、他端側はスプリン
グ２８ｅの力を緩み止めに使うポル）２３ｆでとめて、
接近、離反可能に、かつ、半開き可能に接続してあり、
ローラ群を内接円の径の変化した位置に変位させ得る。The cutting tool 20 is the same as a known cutting tool. That is, as shown in FIG. 4, there is a roller group in which three or more rollers 22 (four in the figure) are arranged in a perfect circle, and the rollers 22 roll, the rotational axes of which are approximately parallel to the cable axis. A support frame 23 for a group of rollers surrounding a nearly perfect circular guide surface and a cutting edge 2
It consists of a cutter 21 attached to the frame so as to be slidable in the radial direction with 1a as the inner end, and a handle 24 attached to the frame almost symmetrically about the central axis in order to rotate the frame 23. The frame 23 in the figure is a semicircular member 23
The two pieces a are connected at one end via a slide plate 23C with a long hole through which the screw shaft 23b passes and a hinge 23d arranged between one member and the slide plate, and the other end is connected by a spring 28e. Use the force to prevent loosening)) Stop with 23f,
It is connected so that it can be approached and separated, and can be opened half-way.
The roller group can be displaced to a position where the diameter of the inscribed circle is changed.
従って、ローラ転動用のガイド面が治具１０の基体の外
周面、切削後の絶縁体３の外周面のいずれであっても１
台の工具を移し替えて使用することができるが、第１の
加工方法に使う工具は、ローラ２２の位置が固定された
ものでよい。Therefore, regardless of whether the guide surface for rolling the roller is the outer peripheral surface of the base of the jig 10 or the outer peripheral surface of the insulator 3 after cutting, 1
Although the tool on the table can be transferred and used, the tool used in the first processing method may be one in which the position of the roller 22 is fixed.
このほか、フレーム２３がケーブル軸方向に長くなる場
合には、ローラ２２の群を第５図のように軸方向に数個
所設けて回転時の安定性を高めるのが望ましい。フレー
ム２３が短かくて済むときに、例えば、第２の加工方法
を採る場合や第１の加工方法において第２図の如き工具
を用いる場合には、１つのフレームに対してローラ群を
軸方向に１個所膜ければ足りる。In addition, when the frame 23 becomes long in the axial direction of the cable, it is desirable to provide groups of rollers 22 at several locations in the axial direction as shown in FIG. 5 to improve stability during rotation. When the frame 23 only needs to be short, for example, when using the second machining method or when using a tool as shown in FIG. 2 in the first machining method, the roller group is axially It is sufficient to apply a membrane at one location.
また、ハンドル２４は、工具２０をモータ等で回転させ
る場合には不要である。Furthermore, the handle 24 is not necessary when the tool 20 is rotated by a motor or the like.
以上述べたように、この発明の方法によれば、モールド
絶縁体の制心量を予め測定しておいてセンター出し治具
で削り工具の回転中心を導体接続部上の軸心上にほぼ一
致させ、上記治具の真円の外周面を基準に回転する工具
の刃物でモールド絶縁体の外周を加工するので、超音波
深厚器に切削機を連動させる場合に必要な連動のための
特殊な設備を使わずに、絶縁体の偏肉を確実に除去でき
ると云う効果が得られる。As described above, according to the method of the present invention, the centering amount of the molded insulator is measured in advance, and the centering jig is used to align the rotation center of the cutting tool almost on the axis on the conductor connection part. Since the outer periphery of the mold insulator is machined using the cutting edge of the tool that rotates based on the perfectly circular outer circumferential surface of the jig, special interlocking tools are required when interlocking the cutting machine with the ultrasonic depth machine. The effect is that uneven thickness of the insulator can be reliably removed without using any equipment.
また、この発明の装置は、簡単な構成のセンター出し治
具を既存の削り工具と組合せるだけで、上記の方法の作
業能率の良い実施を可能にすると云う効果が得られる。Further, the apparatus of the present invention has the effect of enabling the above-mentioned method to be carried out with high efficiency simply by combining a centering jig with a simple structure with an existing cutting tool.
第１図は、この発明の加工方法をボす側面線図、第２図
は第１の加工方法における削り工具の変形例を下す側面
線図、第３図はセンター出し治具の断面図、第４図は削
り工具の一例を示す正面図、第５図はその側面図である
。
１・・・ケーブル、２・・・導体接続部、３・・・モー
ルド絶縁体、１０・・・センター出し治具、１１・・・
基体、１３・・・把持子、２０・・・削り工具、２１・
・・刃物、２２・・・ローラ、２３・・・ローラ群の支
持フレーム。FIG. 1 is a side view showing the processing method of the present invention, FIG. 2 is a side view showing a modification of the cutting tool in the first processing method, and FIG. 3 is a sectional view of the centering jig. FIG. 4 is a front view showing an example of a cutting tool, and FIG. 5 is a side view thereof. DESCRIPTION OF SYMBOLS 1... Cable, 2... Conductor connection part, 3... Mold insulator, 10... Centering jig, 11...
Base body, 13...Gripper, 20...Cutting tool, 21.
...Knife, 22...Roller, 23...Support frame for roller group.
Claims (4)
心量を予め測定し、外周面が真円のセンター出し治具を
、上記モールド絶縁体の外周面を位置の計測基準にして
モールド絶縁体の軸心からその絶縁体の偏心方向と逆方
向に偏心量相当分偏心させてモールド絶縁体近傍のケー
ブル上にセットした後、このセンター出し治具の外周面
を基準にして回転する刃物でモールド絶縁体の外周面を
所定の外径に切削することを特徴とするケーブル接続部
におけるモールド絶縁体の仕上げ加工方法。(1) Measure the eccentricity of the conductor connection part and the molded insulator provided on it in advance, and use a centering jig with a perfect circle on the outer circumference to place the mold using the outer circumferential surface of the molded insulator as a position measurement reference. A cutter that rotates based on the outer circumferential surface of the centering jig after setting the center of the insulator on the cable near the molded insulator with an amount of eccentricity in the opposite direction to the eccentric direction of the insulator. A method for finishing a molded insulator at a cable connection portion, the method comprising: cutting the outer peripheral surface of the molded insulator to a predetermined outer diameter.
心量を予め測定し、外周面が真円のセンター出し治具を
、上記モールド絶縁体の外周面を位置の計測基準にして
モールド絶縁体の軸心からその絶縁体の偏心方向と逆方
向に偏心量相当分偏心させてモールド絶縁体近傍のケー
ブル上にセットした後、このセンター出し治具の外周面
を基準にして回転する刃物でモールド絶縁体の端部外周
面を所定の外径に切削し、次に、切削後の絶縁体外周面
を基準にして回転する刃物で残りの絶縁体外周面を所定
の外径に切削することを特徴とするケーブル接続部にお
けるモールド絶縁体の仕上げ加工方法。(2) Measure the eccentricity of the conductor connection part and the molded insulator provided on it in advance, and use a centering jig with a perfect circle on the outer circumference to place the mold using the outer circumference of the molded insulator as a position measurement reference. A cutter that rotates based on the outer circumferential surface of the centering jig after setting the center of the insulator on the cable near the molded insulator with an amount of eccentricity in the opposite direction to the eccentric direction of the insulator. Cut the outer circumferential surface of the end of the molded insulator to a predetermined outer diameter, and then cut the remaining outer circumferential surface of the insulator to a predetermined outer diameter using a rotating blade based on the cut outer circumferential surface of the insulator. A method for finishing a molded insulator at a cable connection portion, characterized in that:
びその基体で半径方向に変位可能に支持して基体の内面
側に周方向に所定のピッチで配置した複数の把持子から
成るセンター出し治具と、真円上に点在してほぼ真円の
ガイド面上をほぼ周方向に転動するローラ群、上記ガイ
ド面の外周を取巻くローラ群の支持フレーム、刃先を内
端側に位置させて支持フレームに半径方向にスライド自
在に取付けられた刃物を主たる構成要素とする削り工具
とを組合せ、少なくとも上記センター出し治具の外周面
を上記ローラ群の転動するガイド面として使用するよう
にしたケーブル接続部におけるモールド絶縁体の仕上げ
切削装置。(3) Centering consisting of a base whose outer circumferential surface is a nearly perfect circle surrounding the cable core, and a plurality of grippers supported so as to be displaceable in the radial direction on the base and arranged at a predetermined pitch in the circumferential direction on the inner surface of the base. A jig, a group of rollers that are scattered on a perfect circle and roll approximately circumferentially on a nearly perfect circular guide surface, a support frame for the roller group that surrounds the outer periphery of the guide surface, and a cutting edge positioned on the inner end side. and a cutting tool whose main component is a blade attached to a support frame so as to be freely slidable in the radial direction, and at least the outer circumferential surface of the centering jig is used as a guide surface on which the roller group rolls. Finish cutting equipment for molded insulators in cable connections.
反可能に接続して構成されたものであることを特徴とす
る特許請求の範囲第（３）項記載の仕上げ切削装置。(4) The finishing cutting device according to claim (3), wherein the support frame is constructed by connecting two semi-annular members so that they can approach and separate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8444686A JPS62241283A (en) | 1986-04-10 | 1986-04-10 | Method and apparatus for scraping to finish molded insulating unit in cable joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8444686A JPS62241283A (en) | 1986-04-10 | 1986-04-10 | Method and apparatus for scraping to finish molded insulating unit in cable joint |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62241283A true JPS62241283A (en) | 1987-10-21 |
Family
ID=13830830
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8444686A Pending JPS62241283A (en) | 1986-04-10 | 1986-04-10 | Method and apparatus for scraping to finish molded insulating unit in cable joint |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62241283A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5355807A (en) * | 1991-08-07 | 1994-10-18 | Osaka Gas Co., Ltd. | Vehicle adapted to freely travel three-dimensionally by magnetic force and wheel for the vehicle |
-
1986
- 1986-04-10 JP JP8444686A patent/JPS62241283A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5355807A (en) * | 1991-08-07 | 1994-10-18 | Osaka Gas Co., Ltd. | Vehicle adapted to freely travel three-dimensionally by magnetic force and wheel for the vehicle |
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