JPH09109601A - Idler rim manufacturing method - Google Patents
Idler rim manufacturing methodInfo
- Publication number
- JPH09109601A JPH09109601A JP29347895A JP29347895A JPH09109601A JP H09109601 A JPH09109601 A JP H09109601A JP 29347895 A JP29347895 A JP 29347895A JP 29347895 A JP29347895 A JP 29347895A JP H09109601 A JPH09109601 A JP H09109601A
- Authority
- JP
- Japan
- Prior art keywords
- rim
- steel sheet
- idler
- drawn steel
- manufacturing
- 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
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- Butt Welding And Welding Of Specific Article (AREA)
Abstract
(57)【要約】
【課題】 従来技術の一実施例アイドラでは、リムを左
右の分割形のリングに形成し、そのリングを溶接して一
体形に製造している。また他実施例アイドラでは、リム
をローリング鍛造加工によってリング状に形成して、製
造している。そのためにアイドラの製造加工費が高く
て、具合が悪かった。本発明は、引抜鋼板をロール曲げ
加工することによって安価に製造できるアイドラリムの
製造方法を提供することを目的とする。
【解決手段】 本発明の製造方法では、中央突出部と踏
面部をそなえた平板状の鋼板を引抜成形手段によって形
成し、その引抜鋼板の長さをリムの外周長さに切断す
る。その場合に、引抜鋼板の長手方向の中央突出部の全
長を踏面部の全長より大寸に設定し、かつ長手方向の両
端面を溶接用の開先傾斜面に形成し、上記引抜鋼板をロ
ール曲げ加工手段によってリング状に形成し、そのリン
グ状の引抜鋼板の相対接する両端縁部を溶接して、リム
とする。
(57) Abstract: In an idler of an embodiment of the prior art, a rim is formed into left and right split rings, and the rings are welded to be integrally manufactured. In the idler of another embodiment, the rim is manufactured by rolling forging into a ring shape. Therefore, the cost of manufacturing and processing the idler was high, and the condition was bad. An object of the present invention is to provide a method for manufacturing an idler rim that can be manufactured at low cost by roll-bending a drawn steel sheet. According to the manufacturing method of the present invention, a flat plate-shaped steel plate having a central protruding portion and a tread surface portion is formed by a pultrusion molding means, and the pultruded steel plate is cut to the outer peripheral length of the rim. In that case, the total length of the central protruding portion in the longitudinal direction of the drawn steel sheet is set to be larger than the total length of the tread portion, and both end surfaces in the longitudinal direction are formed into groove slopes for welding, and the drawn steel sheet is rolled. It is formed into a ring shape by a bending means, and both end edges of the ring-shaped drawn steel sheet that are in contact with each other are welded to form a rim.
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、建設機械，作業車
両などのクローラ式走行体のトラックフレーム前部に装
備されているアイドラのリムの製造方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for manufacturing an rim of an idler mounted on a front portion of a track frame of a crawler type traveling body such as a construction machine and a work vehicle.
【０００２】[0002]
【従来の技術】図５は、特公昭５６−１１８１号公報に
記載されているアイドラの要部断面図である。図５に示
すように、踏板３の両端内周に一対の鏡板２，２の外周
側をそれぞれ両面隈肉溶接４，５した後に一対の鏡板
２，２の内周側をそれぞれボス１の両側段部６，６にそ
れぞれ嵌合し、その後に外側からのみそれぞれ片面隈面
溶接７してアイドラを製造している。また図示していな
いが他実施例アイドラでは、リム（図５における踏板３
に相当する）をローリング鍛造加工によってリング状に
形成して、製造している。2. Description of the Related Art FIG. 5 is a sectional view of an essential part of an idler described in Japanese Patent Publication No. 56-1181. As shown in FIG. 5, the outer peripheral sides of the pair of end plates 2 and 2 are welded to both ends of the tread plate 3 on both sides, and then the inner peripheral sides of the pair of end plates 2 and 2 are attached to both sides of the boss 1, respectively. Idler is manufactured by fitting into the step portions 6 and 6, respectively, and then performing single-sided and one-sided welding 7 only from the outside. Although not shown, the idler of another embodiment has a rim (the step plate 3 in FIG. 5).
(Corresponding to) is formed into a ring shape by rolling forging and is manufactured.
【０００３】[0003]
【発明が解決しようとする課題】図５に示す従来技術の
一実施例アイドラでは、リム（踏板３のこと）を左右の
分割形のリングａとｂに形成し、そのリングａとｂを溶
接（溶接部が符号イである）して一体形に製造してい
る。また図示していない他実施例アイドラでは、リム
（図５における踏板３に相当する）をローリング鍛造加
工によってリング状に形成している。そのために従来技
術のアイドラの製造加工費が高く、コストの面で具合が
悪かった。本発明は、引抜鋼板をロール曲げ加工するこ
とによって安価に製造できるアイドラリムの製造方法を
提供することを目的とする。In the prior art idler shown in FIG. 5, the rim (the tread plate 3) is formed into left and right split rings a and b, and the rings a and b are welded. (The welded part is number a) and is manufactured in one piece. Further, in an idler of another embodiment not shown, the rim (corresponding to the step plate 3 in FIG. 5) is formed into a ring shape by rolling forging. Therefore, the manufacturing cost of the conventional idler is high, and the cost is not good. An object of the present invention is to provide a method for manufacturing an idler rim that can be manufactured at low cost by roll-bending a drawn steel sheet.
【０００４】[0004]
【課題を解決するための手段】本発明では、中心部に軸
穴を有するボスと、外周面に中央突出部と踏面部をそな
えたリムとをそれぞれ別体に形成し、上記両者の間にデ
ィスクを介在させて溶接したアイドラにおいて、上記中
央突出部と踏面部をそなえた平板状の鋼板を引抜成形手
段によって形成し、その引抜鋼板の長さをリムの外周長
さに切断し、その所定の長さの引抜鋼板をロール曲げ加
工手段によってリング状に形成し、そのリング状の引抜
鋼板の相対接する両端縁部を溶接してリムとする。そし
て本発明では上記の場合に、上記引抜鋼板の平板状の状
態時に、引抜鋼板の長手方向の中央突出部の全長を踏面
部の全長より大寸に設定し、かつ長手方向の両端面を溶
接用の開先傾斜面に形成している。上記のように本発明
のリムは、中央突出部と踏面部をそなえた平板状の鋼板
を引抜成形手段によって形成し、その引抜鋼板の長さを
所定の長さに切断し、ロール曲げ加工手段によってリン
グ状に形成するようにしているので、リムを安価に製造
することができる。また平板状の引抜鋼板を所定の長さ
に切断するとき引抜鋼板の長手方向の中央突出部の全長
を踏面部の全長より大寸に設定し、かつ長手方向の両端
面を溶接用の開先傾斜面に形成しているので、所定の長
さの引抜鋼板をリング状にロール曲げ加工したとき、中
央突出部と踏面部のそれぞれ相対する両端縁部の底の部
分を互いに当接させることができる。そして上記相対す
る両端縁部の間は溶接用の開先に形成されるので、その
開先の部分に対し、確実かつ容易に溶接を行うことがで
きる。According to the present invention, a boss having a shaft hole in the central portion and a rim having a central protruding portion and a tread portion on the outer peripheral surface are separately formed, and between the both. In an idler welded with a disc interposed, a flat plate-shaped steel sheet having the central protruding portion and the tread surface portion is formed by a pultrusion molding means, and the pultruded steel plate is cut to the outer peripheral length of the rim, and the predetermined A drawn steel plate having a length of 1 is formed into a ring shape by a roll bending means, and both edge portions of the ring-shaped drawn steel sheet that are in contact with each other are welded to form a rim. In the present invention, in the above case, when the drawn steel plate is in the flat plate state, the total length of the central protruding portion in the longitudinal direction of the drawn steel plate is set to be larger than the total length of the tread portion, and both end faces in the longitudinal direction are welded. It is formed on the groove slope for use. As described above, the rim of the present invention is a flat plate-shaped steel sheet having a central protruding portion and a tread portion formed by a drawing forming means, and the drawn steel sheet is cut to a predetermined length, and a roll bending means is formed. The rim can be manufactured at a low cost because the rim is formed in a ring shape. When cutting a flat drawn steel sheet into a predetermined length, set the total length of the central protruding portion in the longitudinal direction of the drawn steel sheet to be larger than the total length of the tread portion, and make sure that both end surfaces in the longitudinal direction are grooved for welding. Since it is formed on the inclined surface, when the drawn steel sheet of a predetermined length is roll-bent into a ring shape, the bottom portions of the opposite end edges of the central protruding portion and the tread surface portion can be brought into contact with each other. it can. Since a groove for welding is formed between the opposite end edges, welding can be reliably and easily performed on the groove.
【０００５】[0005]
【発明の実施の形態】以下、本発明の実施例を図面に基
いて詳細に説明する。図１は、本発明の製造方法による
リム８をそなえたアイドラ９の断面図である。図におい
て、１０はアイドラ９の中心部のボス、１１はボス１０
の軸穴、１２はリム８の中央突出部、１３は中央突出部
１２の両側の踏面部、１４は一対のディスク、寸法ΦＤ
は中央突出部１２の外径寸法、寸法Φｄは踏面部１３の
外径寸法である。図２は、図１のＡ−Ａより見た側面図
である。図３は、図２におけるリム８を外周面側の方向
（矢印Ｂの方向）から見た図であるがリム８を図２のよ
うにリング状にする前の平板状の状態を示す平面図であ
る。図において、１５，１６はリム８の両端縁部の溶接
用のそれぞれ開先傾斜面、寸法Ｌは中央突出部１２の外
周面の全長寸法、寸法ｌは踏面部１３の外周面の全長寸
法である。図４は、図２のＣ−Ｃより見たリム８の一方
端縁部を示す斜視図である。BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view of an idler 9 having a rim 8 manufactured by the manufacturing method of the present invention. In the figure, 10 is a boss at the center of the idler 9, and 11 is a boss 10.
Shaft hole, 12 is a central protruding portion of the rim 8, 13 is a tread surface portion on both sides of the central protruding portion 12, 14 is a pair of discs, and the dimension is ΦD.
Is the outer diameter of the central protruding portion 12, and dimension Φd is the outer diameter of the tread 13. FIG. 2 is a side view seen from AA in FIG. 3 is a view of the rim 8 in FIG. 2 seen from the direction of the outer peripheral surface side (direction of arrow B), but is a plan view showing a flat plate-like state before the rim 8 is formed into a ring shape as shown in FIG. Is. In the figure, reference numerals 15 and 16 are groove inclined surfaces for welding both end portions of the rim 8, respectively, dimension L is the total length of the outer peripheral surface of the central protruding portion 12, and dimension 1 is the total length of the outer peripheral surface of the tread portion 13. is there. FIG. 4 is a perspective view showing one end edge portion of the rim 8 as seen from CC in FIG.
【０００６】次に、本発明のリム８の製造方法を図１〜
図４について述べる。本発明では、中央突出部１２と踏
面部１３をそなえた平板状の鋼板を引抜成形手段（引抜
成形装置であるが図示していない）によって形成し、そ
の引抜鋼板の長さをリム８の外周長さに切断し、その所
定の長さに設定した引抜鋼板（平板状のリム８）をロー
ル曲げ加工手段（一般にロールベンダと呼ばれているロ
ール曲げ加工機であるが図示していない）によってリン
グ状に形成し、そのリング状の引抜鋼板の相対接する両
端縁部を溶接して、リム８とする。そして本発明では上
記の場合に、図３に示すように引抜鋼板（平板状のリム
８）の長手方向の中央突出部１２の全長（外周面側の全
長であるが寸法Ｌ）を踏面部１３の全長（外周面側の全
長であるが寸法ｌ）より大寸に設定し、かつ長手方向の
両端面を溶接用の開先傾斜面１５，１６に形成してい
る。Next, the manufacturing method of the rim 8 of the present invention will be described with reference to FIGS.
Referring to FIG. In the present invention, a flat plate-shaped steel plate having the central protruding portion 12 and the tread surface portion 13 is formed by a pultrusion molding means (a pultrusion molding device (not shown)), and the length of the pultruded steel plate is the outer circumference of the rim 8. The drawn steel plate (flat plate-shaped rim 8) cut into a predetermined length is set by a roll bending means (a roll bending machine generally called a roll bender, which is not shown). The rim 8 is formed by forming it into a ring shape, and welding the opposite edge portions of the ring-shaped drawn steel sheet that are in contact with each other. In the present invention, in the above case, as shown in FIG. 3, the total length of the central protruding portion 12 in the longitudinal direction of the drawn steel plate (the flat plate-shaped rim 8) (the total length on the outer peripheral surface side, but the dimension L) is set to the tread portion 13. Is set to be larger than the entire length (the total length on the outer peripheral surface side, but the dimension 1), and both end surfaces in the longitudinal direction are formed as grooved inclined surfaces 15 and 16 for welding.
【０００７】次に、本発明のリム８の製造方法の作用に
ついて述べる。本発明では、中央突出部１２と踏面部１
３をそなえた平板状の鋼板を引抜成形手段によって形成
し、その引抜鋼板の長さを所定の長さに切断し、ロール
曲げ加工手段によってリング状に形成するようにしてい
るので、リム８を安価に製造することができる。また平
板状の引抜鋼板を所定の長さに切断するとき引抜鋼板の
長手方向の中央突出部１２の全長を踏面部１３の全長よ
り大寸に設定し、かつ長手方向の両端面を溶接用の開先
傾斜面１５，１６に形成しているので、所定の長さの引
抜鋼板をリング状にロール曲げ加工したとき、中央突出
部１２と踏面部１３のそれぞれ相対する両端縁部の底の
部分（図３に示す開先傾斜面１５の符号Ｃで示す部分
と、図３及び図４に示す開先傾斜面１６の符号ｄの部分
をいう）を互いに当接させることができる。そして上記
相対する両端縁部の開先傾斜面１５と１６の間は溶接用
の開先に形成されるので、その開先の部分に対し、確実
かつ容易に溶接（図２に示す符号ｅの部分が溶接部であ
る）を行うことができる。Next, the operation of the method of manufacturing the rim 8 of the present invention will be described. In the present invention, the central protruding portion 12 and the tread portion 1
Since a flat plate-shaped steel sheet having No. 3 is formed by a drawing method, the drawn steel sheet is cut into a predetermined length and formed into a ring shape by a roll bending processing method, the rim 8 is formed. It can be manufactured at low cost. When the flat drawn steel sheet is cut into a predetermined length, the total length of the central protruding portion 12 in the longitudinal direction of the drawn steel sheet is set to be larger than the total length of the tread portion 13 and both longitudinal end surfaces are used for welding. Since the groove slopes 15 and 16 are formed, when the drawn steel plate of a predetermined length is roll-bent into a ring shape, the central protrusion 12 and the tread 13 are opposite to each other at the bottom edge portions of both edges. (A portion of the groove inclined surface 15 shown in FIG. 3 indicated by reference numeral C and a portion of the groove inclined surface 16 indicated by reference numeral d shown in FIGS. 3 and 4) can be brought into contact with each other. Since a groove for welding is formed between the groove inclined surfaces 15 and 16 at the opposite edge portions, the welding is performed reliably and easily with respect to the groove portion (reference numeral e in FIG. 2). Part is a weld).
【０００８】[0008]
【発明の効果】本発明のリムの製造方法では、中央突出
部と踏面部をそなえた平板状の鋼板を引抜成形手段によ
って形成し、その引抜鋼板の長さを所定の長さに切断
し、鋼板の長手方向の中央突出部の全長を踏面部の全長
より大寸に設定し、かつ長手方向の両端面を溶接用の開
先傾斜面に形成しているので、所定の長さの引抜鋼板を
リング状にロール曲げ加工したとき、中央突出部と踏面
部のそれぞれ相対する両端縁部の底の部分を互いに当接
させることができる。そして上記相対する両端縁部の間
は溶接用の開先に形成されるので、その開先の部分に対
し、確実かつ容易に溶接を行うことができる。したがっ
て本発明のリムの製造方法を用いたアイドラでは、その
強度を十分に保有し、かつアイドラの製作費のコストダ
ウンをはかることができる。According to the method of manufacturing a rim of the present invention, a flat steel plate having a central protruding portion and a tread portion is formed by a pultrusion molding means, and the pultruded steel plate is cut into a predetermined length. The total length of the central protruding portion in the longitudinal direction of the steel plate is set to be larger than the total length of the tread surface portion, and both end faces in the longitudinal direction are formed into beveled inclined surfaces for welding, so a drawn steel sheet of a predetermined length When the roll is rolled into a ring shape, it is possible to bring the bottom portions of the opposite end edges of the central protruding portion and the tread surface portion into contact with each other. Since a groove for welding is formed between the opposite end edges, welding can be reliably and easily performed on the groove. Therefore, the idler using the rim manufacturing method of the present invention can sufficiently retain its strength and reduce the cost of manufacturing the idler.
【図１】本発明の製造方法によるリムをそなえたアイド
ラの断面図である。FIG. 1 is a cross-sectional view of an idler provided with a rim according to the manufacturing method of the present invention.
【図２】図１のＡ−Ａより見た側面図である。FIG. 2 is a side view seen from AA in FIG.
【図３】図２におけるリムをリング状にする前の平板状
の状態を示す平面図である。FIG. 3 is a plan view showing a flat plate-like state before forming the rim in FIG. 2 into a ring shape.
【図４】図２のＣ−Ｃより見たリムの一方端縁部を示す
斜視図である。FIG. 4 is a perspective view showing one end edge portion of the rim seen from CC of FIG.
【図５】従来技術の一実施例アイドラの要部断面図であ
る。FIG. 5 is a cross-sectional view of a main part of an idler according to an embodiment of the related art.
１，１０ ボス ８ リム ９ アイドラ １１ 軸穴 １２ 中央突出部 １３ 踏面部 １４ ディスク １５，１６ 開先傾斜面 1,10 Boss 8 Rim 9 Idler 11 Shaft hole 12 Central protrusion 13 Tread 14 Disk 15 and 16 Beveled surface
Claims (2)
中央突出部と踏面部をそなえたリムとをそれぞれ別体に
形成し、上記両者の間にディスクを介在させて溶接した
アイドラにおいて、上記中央突出部と踏面部をそなえた
平板状の鋼板を引抜成形手段によって形成する工程と、
その引抜鋼板の長さをリムの外周長さに切断する工程
と、その所定の長さの引抜鋼板をロール曲げ加工手段に
よってリング状に形成する工程と、そのリング状の引抜
鋼板の相対接する両端縁部を溶接する工程とを有するこ
とを特徴とするアイドラリムの製造方法。1. An idler in which a boss having a shaft hole at the center and a rim having a central protrusion and a tread on the outer peripheral surface are separately formed and welded with a disc interposed therebetween. In the step of forming a flat plate-shaped steel sheet having the central protruding portion and the tread portion by a pultrusion molding means,
A step of cutting the length of the drawn steel sheet into the outer peripheral length of the rim, a step of forming the drawn steel sheet of the predetermined length into a ring shape by means of roll bending, and both ends of the ring-shaped drawn steel sheet which are in contact with each other. A method for manufacturing an idler rim, which comprises a step of welding an edge portion.
リムの製造方法において、前記引抜鋼板の平板状の状態
時に、引抜鋼板の長手方向の中央突出部の全長を踏面部
の全長より大寸に設定し、かつ長手方向の両端面を溶接
用の開先傾斜面に形成してリムを製造することを特徴と
するアイドラリムの製造方法。2. The method for manufacturing an idler rim according to claim 1, wherein when the drawn steel sheet is in a flat plate state, the total length of the central protruding portion in the longitudinal direction of the drawn steel sheet is made larger than the total length of the tread portion. A method for manufacturing an idler rim, which comprises setting and forming both end surfaces in the longitudinal direction into groove slopes for welding to manufacture a rim.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29347895A JPH09109601A (en) | 1995-10-16 | 1995-10-16 | Idler rim manufacturing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP29347895A JPH09109601A (en) | 1995-10-16 | 1995-10-16 | Idler rim manufacturing method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09109601A true JPH09109601A (en) | 1997-04-28 |
Family
ID=17795265
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP29347895A Pending JPH09109601A (en) | 1995-10-16 | 1995-10-16 | Idler rim manufacturing method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09109601A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020001316A (en) * | 2000-06-28 | 2002-01-09 | 신중만 | front idler |
| WO2020160843A1 (en) | 2019-02-05 | 2020-08-13 | Caterpillar Sarl | Crawler-type traveling device and idler thereof |
| US11572113B2 (en) | 2020-01-28 | 2023-02-07 | Caterpillar Inc. | Fabricated track roller rim assembly |
-
1995
- 1995-10-16 JP JP29347895A patent/JPH09109601A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020001316A (en) * | 2000-06-28 | 2002-01-09 | 신중만 | front idler |
| WO2020160843A1 (en) | 2019-02-05 | 2020-08-13 | Caterpillar Sarl | Crawler-type traveling device and idler thereof |
| DE112020000374T5 (en) | 2019-02-05 | 2021-10-07 | Caterpillar Sarl | TRACKED UNDERCARRIAGE AND CASTLER OF IT |
| US11572113B2 (en) | 2020-01-28 | 2023-02-07 | Caterpillar Inc. | Fabricated track roller rim assembly |
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