JP3116475B2 - Method of forming U-shaped guide hole in steel plate structure - Google Patents
Method of forming U-shaped guide hole in steel plate structureInfo
- Publication number
- JP3116475B2 JP3116475B2 JP03306888A JP30688891A JP3116475B2 JP 3116475 B2 JP3116475 B2 JP 3116475B2 JP 03306888 A JP03306888 A JP 03306888A JP 30688891 A JP30688891 A JP 30688891A JP 3116475 B2 JP3116475 B2 JP 3116475B2
- Authority
- JP
- Japan
- Prior art keywords
- hole
- forming
- fusing
- shaped hole
- 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.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/04—Steel or steel alloys
Landscapes
- Arc Welding In General (AREA)
- Laser Beam Processing (AREA)
- Drilling And Boring (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、建設機械，作業車両の
作業アタッチメントなどを構成する鋼板構造物における
案内用Ｕ字穴の成形法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method for forming a U-shaped guide hole in a steel plate structure constituting a work attachment of a construction machine or a work vehicle.
【０００２】[0002]
【従来の技術】図３は、超ロング作業アタッチメント１
を装備した油圧ショベルの側面図である。図において、
仮想線イは上記作業アタッチメント１を降下して折畳ん
だ状態を示す図である。２は作業アタッチメント１のメ
インブーム、３はメインブーム２のうちの基端側ブー
ム、４は先端側ブーム、５は中継ぎブーム、６はブーム
用油圧シリンダである。図４は、図３におけるメインブ
ーム２を降下した場合のＡ部の連結を分離せしめた状態
を示す図である。図において、６は基端部側ブーム３の
先端部上側ピン穴、７は先端部下側ピン穴、８は先端部
上側ピン穴６の付近に形成された左右一対の案内用Ｕ字
穴、９は中継ぎブーム５の後端部上側ピン穴、１０は後
端部下側ピン穴、１１は後端部上側ピン穴９の付近に左
右に突出して設けた案内ピンである。図５は、図４のＢ
より見た平面図である。図６は、図４のＣ部詳細図であ
る。図において、１２は案内用Ｕ字穴８（以下Ｕ字穴８
という）のピン受け面、１３はＵ字穴８の開口部、寸法
Ｐ１はピン穴７−６間，またピン穴１０−９間のそれぞ
れピッチ、寸法Ｐ２はピン穴７−ピン受け面１２の曲率
中心Ｏ１間、またピン穴１０−案内ピン１１の軸心Ｏ２
間のそれぞれピッチ、寸法Ｐ３はピン穴６−ピン受け面
１２の曲率中心Ｏ１間、またピン穴９−案内ピン１１の
軸心Ｏ２間のそれぞれピッチである。2. Description of the Related Art FIG.
It is a side view of the hydraulic shovel equipped with. In the figure,
A virtual line A is a diagram showing a state where the work attachment 1 is lowered and folded. Reference numeral 2 denotes a main boom of the work attachment 1, reference numeral 3 denotes a base end boom of the main boom 2, reference numeral 4 denotes a distal end boom, reference numeral 5 denotes a relay boom, and reference numeral 6 denotes a hydraulic cylinder for the boom. FIG. 4 is a view showing a state where the connection of the part A is separated when the main boom 2 in FIG. 3 is lowered. In the drawing, 6 is a distal upper pin hole of the proximal end boom 3, 7 is a lower distal pin hole, 8 is a pair of right and left guiding U-shaped holes formed near the distal upper pin hole 6, 9 Reference numeral 10 denotes a rear end upper pin hole at the rear end of the relay boom 5, 10 denotes a lower pin hole at the rear end, and 11 denotes a guide pin protruding left and right near the rear end upper pin hole 9. FIG. 5 shows B in FIG.
It is the top view which looked more. FIG. 6 is a detailed view of a portion C in FIG. In the drawing, 12 is a guide U-shaped hole 8 (hereinafter referred to as a U-shaped hole 8).
13) is the opening of the U-shaped hole 8, dimension P1 is the pitch between the pin holes 7-6 and 10-9, respectively, and dimension P2 is the pitch between the pin hole 7 and the pin receiving surface 12. Between the centers of curvature O1, and between the pin hole 10 and the axis O2 of the guide pin 11
The pitch P3 between the pin holes 6 and the center of curvature O1 of the pin receiving surface 12, and the pitch P3 between the pin holes 9 and the axis O2 of the guide pin 11, respectively.
【０００３】図３に示すように超ロング作業アタッチメ
ントのメインブーム２は、いわゆる継ぎブーム式に構成
されている。それで仮想線イで示すような状態にして、
基端側ブーム３の先端部に中継ぎブーム５の後端部を容
易に連結するために、基端側ブーム３側にＵ字穴８を、
また中継ぎブーム５側に案内ピン１１を設けている。し
たがって上記連結作業を行うときには、Ｕ字穴８に案内
ピン１１を嵌合した状態で、ピン穴７とピン穴１０のそ
れぞれ穴心を合致させることにより、同時にピン穴６と
ピン穴９のそれぞれ穴心を自動的に合致させることがで
きるので、上下２本の連結ピンの嵌挿を容易に行うこと
ができる。[0003] As shown in Fig. 3, the main boom 2 of the ultra-long work attachment is configured as a so-called joint boom type. So put it in the state shown by the virtual line a,
In order to easily connect the rear end of the relay boom 5 to the distal end of the proximal boom 3, a U-shaped hole 8 is provided on the proximal boom 3 side.
A guide pin 11 is provided on the relay boom 5 side. Therefore, when performing the above-mentioned connection work, the guide pins 11 are fitted into the U-shaped holes 8 and the pin centers of the pin holes 7 and 10 are matched with each other, so that the pin holes 6 and 9 are simultaneously formed. Since the hole centers can be automatically matched, the upper and lower two connection pins can be easily inserted.
【０００４】[0004]
【発明が解決しようとする課題】油圧ショベルの継ぎブ
ームに設けられている案内用Ｕ字穴では、基準となるピ
ン穴からのピッチ寸法と、ピン受け面の曲率半径寸法
（この寸法は案内ピンのピン径の１／２に相当する）の
加工精度をかなり精密に施工している。図７は、従来技
術である第１従来例案内用Ｕ字穴の成形法を示す図であ
る。粗材鋼板の板取り溶断加工時に案内用Ｕ字穴付近の
外側を図７に示す溶断面ロに形成し、後工程の機械加工
時に案内ピン１１（図６に示す）のピン径に相当する直
径φｄなる眞円の穴を穴心Ｏ１（図６における穴心Ｏ１
の位置）を中心として穴明加工を行う。それから案内用
Ｕ字穴の開口部を形成するために、直径φｄの眞円穴の
内周面に線ハ及び線ロに沿って溶断加工を行い、斜線の
部分を除去しさらにグラインダにて手入れを行う。上記
の第１従来例成形法では、直径φｄの眞円穴を穴明けす
る場合穴の変形がないように外側溶断面ロとの間の板長
さｌを有するので、開口部溶断の線ハの長さＬ１と線ニ
の長さＬ１がかなり長いので、その溶断面（ガス切断
面）の手入れ（グラインダによる手入れ仕上げ）に大な
る手間と時間を要していた。また図８は、従来技術であ
る第２従来例案内用Ｕ字穴の成形法を示す図である。粗
材鋼板の板取り溶断加工時に、案内用Ｕ字穴のピン受け
面に対して切削代ホ（斜線の部分）を予め設け、後工程
の機械加工においてフライス加工を行うようにしてい
る。この第２従来例成形法では、ピン受け面の加工長さ
が直径φｄなる眞円の半円以上の長さにわたるので、大
なる機械加工時間を要し、製作コストが高かった。本発
明は、上記の問題点を解決できる案内用Ｕ字穴の成形法
を提供することを目的とする。In a guide U-shaped hole provided in a joint boom of a hydraulic excavator, a pitch dimension from a reference pin hole and a radius of curvature of a pin receiving surface (this dimension is a guide pin) (Corresponding to 1/2 of the diameter of the pin). FIG. 7 is a diagram showing a method of forming a first conventional U-shaped guide hole according to the prior art. The outside of the vicinity of the guide U-shaped hole is formed in the molten section B shown in FIG. 7 at the time of cutting and fusing of the coarse steel plate, and corresponds to the pin diameter of the guide pin 11 (shown in FIG. 6) at the time of machining in the subsequent step. The hole O2 (the hole O1 in FIG. 6)
Drilling centering on the center position). Then, in order to form the opening of the guide U-shaped hole, the inner peripheral surface of the perfect circular hole having the diameter φd is subjected to fusing along the lines C and B, the hatched portions are removed, and furthermore the grit is treated with a grinder. I do. In the first conventional molding method described above, when a perfect circular hole having a diameter φd is drilled, the length of the plate is 1 between the outer fusion surface B and the hole so that the hole is not deformed. Since the length L1 of the wire and the length L1 of the wire D are considerably long, it takes a great deal of time and effort to care for the molten cross section (gas cut surface) (finishing with a grinder). FIG. 8 is a diagram showing a method of forming a U-shaped hole for guiding according to a second conventional example of the prior art. At the time of plate cutting and fusing of the coarse steel plate, a cutting allowance (shaded portion) is provided in advance on the pin receiving surface of the guide U-shaped hole, so that milling is performed in machining in a later process. In the second conventional molding method, since the processing length of the pin receiving surface extends over a half circle of a perfect circle having a diameter φd, a large machining time is required, and the manufacturing cost is high. An object of the present invention is to provide a method for forming a U-shaped hole for guidance that can solve the above problems.
【０００５】[0005]
【課題を解決するための手段】本発明では、案内用Ｕ字
穴を形成するための粗材鋼板に対して板取り溶断加工を
行うとき、案内用Ｕ字穴の開口部となる線に沿って溶断
ノッチ部を切込み、その溶断ノッチ部の最大切込み端位
置を、後工程で形成される予定の眞円の穴が穴明加工可
能な距離まで近付け、後工程にて半円状のピン受け面を
形成するために機械加工にて眞円の穴を穴明加工し、そ
の眞円の穴の内周面に接するように上記最大切込み端と
上記半円周端との間の最短限度の板部を切断するように
した。According to the present invention, when performing plate cutting and fusing processing on a rough steel plate for forming a U-shaped hole for guiding, the rough cutting is performed along a line serving as an opening of the U-shaped hole for guiding. Cut the fusing notch, and move the maximum cutting end position of the fusing notch close to the distance where a perfect hole to be formed in the subsequent process can be drilled. In order to form a surface, a perfect circle hole is drilled by machining, and the shortest limit between the maximum notch end and the semicircular end so as to be in contact with the inner peripheral surface of the perfect circle hole The plate was cut.
【０００６】[0006]
【実施例】以下、本発明の実施例を図面に基づいて詳細
に説明する。図１は、本発明の案内用Ｕ字穴の成形法を
示す図である。図において、従来技術と同一構成要素を
使用するものに対しては同符号を付す。８'は本発明の
成形法により形成される案内用Ｕ字穴、１４，１５はそ
れぞれ溶断ノッチ部である。寸法ｌａ，ｌｂは、本発明
の成形法において直径φｄの眞円穴を穴明機械加工する
場合に、穴の変形がないように保有している眞円穴と、
溶断ノッチ部（ｌａ，ｌｂ）の最大切込端位置（チ，
リ）との間のそれぞれ板長さである。Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a view showing a method of forming a U-shaped hole for guidance according to the present invention. In the figure, the same reference numerals are given to components using the same components as the conventional technology. 8 'is a guide U-shaped hole formed by the molding method of the present invention, and 14 and 15 are fusing notches. Dimensions la and lb are a perfect round hole held so that the hole is not deformed when a perfect circular hole having a diameter φd is machined in the forming method of the present invention;
Maximum notch end position of the fusing notch (la, lb)
Ii) is the plate length.
【０００７】次に、本発明の案内用Ｕ字穴８'（以下Ｕ
字穴８'という）の成形法を図１について述べる。本発
明では、Ｕ字穴８'を形成するための粗材鋼板に対して
板取り溶断加工を行うとき、Ｕ字穴８'の開口部となる
線ヘ，トに沿ってそれぞれ溶断ノッチ部１４，１５を切
込み、その溶断ノッチ部１４，１５のそれぞれ最大切込
み端位置チ，リを、後工程の機械加工（ドリル，リーマ
などの切削工具を使用して行う機械加工）によって形成
される予定の半円状のピン受け面１２のそれぞれ半円周
端位置ヌ，ルまで近付け、後工程にて半円状のピン受け
面１２を形成するために機械加工にてφｄなる眞円の穴
明加工し、そのφｄなる眞円の穴の内周面に接するよう
に上記最大切込み端（チ位置とリ位置をいう）と上記半
円周端（位置ヌと位置ルをいう）との間の最短限度の板
長さＳ１，Ｓ２を有するそれぞれ板部を切断するように
した。なお、上記最短限度の板部を切断する手段として
は、ガスカット，レーザカット，プラズマカットなどに
よる切断方法がある。またその切断後には、図１におけ
る斜線の部分が除去される。したがって線へ，トに沿っ
てできた切断面は、それぞれグラインダによって手入れ
して、仕上げる。Next, a guide U-shaped hole 8 '(hereinafter referred to as U
FIG. 1 shows a method of forming the hole 8 ′). According to the present invention, when performing plate cutting and fusing processing on a coarse steel plate for forming the U-shaped hole 8 ′, the fusing notch portions 14 are respectively formed along lines F and G that become openings of the U-shaped hole 8 ′. , 15 are cut, and the maximum cutting end positions H, R of the fusing notches 14, 15 are to be formed by machining in the subsequent process (machining using a cutting tool such as a drill or a reamer). The semicircular pin receiving surface 12 is approached to the semicircular end position null and lu, respectively, and in order to form the semicircular pin receiving surface 12 in a post-process, a perfect circular hole of φd is formed by machining. The shortest distance between the maximum cutting edge (referred to as the position H and the position R) and the semicircular end (referred to as the position N and position L) so as to be in contact with the inner peripheral surface of the hole of a perfect circle of φd. Each plate portion having the limit plate lengths S1 and S2 was cut. As a means for cutting the shortest plate portion, there is a cutting method such as gas cut, laser cut, plasma cut and the like. After the cutting, the hatched portions in FIG. 1 are removed. Therefore, the cut surfaces formed along the line and along the line are each trimmed and finished by a grinder.
【０００８】次に、本発明のＵ字穴８'の成形法がもた
らす作用について述べる。本発明では、粗材鋼板に対し
て板取り溶断加工を行うとき、Ｕ字穴８'の開口部とな
る線ヘ，トに沿ってそれぞれ溶断ノッチ部１４，１５を
切込み、その溶断ノッチ部１４，１５のそれぞれ最大切
込み端位置チ，リを後工程の機械加工によって形成され
る予定の半円状のピン受け面１２のそれぞれ半円周端位
置ヌ，ルまで近付けた。それにより後工程の機械加工に
てφｄなる眞円の穴を穴明加工を完了したときには、Ｕ
字穴８'の開口部を形成するために切断する板長さを最
短限度の寸法Ｓ１，Ｓ２にすることができる。上記切断
長さを非常に短くしたので、切断後の手入れの手間と時
間を大巾に低減し、またその切断後の開口面精度を向上
させることができる。Next, the operation brought about by the method of forming the U-shaped hole 8 'of the present invention will be described. According to the present invention, when performing the plate cutting and fusing processing on the coarse steel sheet, the fusing notches 14 and 15 are cut along the lines to be the openings of the U-shaped holes 8 ′, respectively, and the fusing notches 14 and 15 are cut. , And 15 are brought close to the semicircular end positions of the semicircular pin receiving surface 12 to be formed by machining in a later step. As a result, when the drilling of a perfect circular hole of φd is completed in the subsequent machining,
The length of the plate cut to form the opening of the character hole 8 'can be set to the shortest dimensions S1 and S2. Since the cutting length is very short, the labor and time for care after cutting can be greatly reduced, and the opening surface accuracy after cutting can be improved.
【０００９】なお図２は、フックブラケット１６の製作
時に本発明の成形法を用いた他実施例板取り溶断形状を
示す図である。１７はフックブラケット１６に形成され
る案内用Ｕ字穴、１８，１９はそれぞれ溶断ノッチ部で
ある。寸法ｌａ'，ｌｂ'は、本発明の他実施例成形法に
おいて直径φｄ'の眞円穴を穴明機械加工する場合に、
穴の変形がないように保有している眞円穴と、溶断ノッ
チ部（ｌａ'，ｌｂ'）の最大切込端位置（ヨ，タ）との
間のそれぞれ板長さである。FIG. 2 is a view showing a plate cutting and fusing shape in another embodiment using the molding method of the present invention when the hook bracket 16 is manufactured. Reference numeral 17 denotes a guide U-shaped hole formed in the hook bracket 16, and reference numerals 18 and 19 denote fusing notches. The dimensions la ′ and lb ′ are determined when a true circular hole having a diameter φd ′ is machined by drilling in the molding method according to another embodiment of the present invention.
This is the length of the plate between the round hole held so that the hole is not deformed and the maximum cut end position (Y, T) of the fusing notch (la ', lb').
【００１０】次に、本発明他実施例の案内用Ｕ字穴１７
（以下、Ｕ字穴１７という）の成形法を図２について述
べる。本発明の他実施例では、Ｕ字穴１７を形成するた
めの粗材鋼板に対して板取り溶断加工を行うとき、Ｕ字
穴１７の開口部となる線オ，ワに沿ってそれぞれ溶断ノ
ッチ部１８，１９を切込み、その溶断ノッチ部１８，１
９のそれぞれ最大切込み端位置ヨ，タを、後工程の機械
加工（ドリル，リーマなどの切削工具を使用して行う機
械加工）によって形成される予定の半円状のピン受け面
１２'のそれぞれ半円周端位置レ，ソまで近づけ、後工
程にて半円状のピン受け面１２'を形成するために機械
加工にてφｄ'なる眞円の穴明加工し、そのφｄ'なる眞
円の穴の内周面に接するように上記最大切込み端（ヨ位
置とタ位置をいう）と上記半円周端（位置レと位置ソを
いう）との間の最短限度の板長さＳ１'，Ｓ２'を有する
それぞれ板部を切断するようにした。なお、上記最短限
度の板部を切断する手段としては、上述した実施例と同
様にガスカット，レーザカット，プラズマカットなどに
よる切断方法がある。またその切断後には、図２におけ
る斜線の部分が除去される。従って、線オ，ワに沿って
できた切断面は、それぞれグラインダによって手入れし
て仕上げる。Next, a guide U-shaped hole 17 according to another embodiment of the present invention will be described.
A method of forming a U-shaped hole 17 (hereinafter referred to as a U-shaped hole 17) will be described with reference to FIG. In another embodiment of the present invention, when performing the plate cutting and fusing processing on the coarse steel plate for forming the U-shaped hole 17, the fusing notches are respectively formed along the lines O and W which are the openings of the U-shaped hole 17. Notches 18 and 19 are cut into the notches 18 and 1
The respective maximum cutting end positions 9 and 9 of the semi-circular pin receiving surfaces 12 ′ to be formed by post-machining machining (machining using a cutting tool such as a drill or reamer) Close to the semicircular end position ソ and ソ, and in the subsequent process, to form a semicircular pin receiving surface 12 ′, drill a perfect circle of φd ′ by machining, and then create a perfect circle of φd ′. The shortest limit plate length S1 'between the maximum cut end (referred to the yaw position and the ta position) and the semicircular end (referred to the position and position) so as to be in contact with the inner peripheral surface of the hole. , S2 '. As a means for cutting the shortest plate portion, there is a cutting method such as gas cut, laser cut, or plasma cut as in the above-described embodiment. After the cutting, the hatched portions in FIG. 2 are removed. Therefore, the cut surfaces formed along the lines e and w are each trimmed and finished with a grinder.
【００１１】次に本発明他実施例のＵ字穴１７の成形法
がもたらす作用について述べる。本発明他実施例では、
粗材鋼板に対して板取り溶断加工を行うとき、Ｕ字穴１
７の開口部となる線オ，ワに沿ってそれぞれ溶断ノッチ
部１８，１９を切込み、その溶断ノッチ部１４，１５の
それぞれ最大切込み端位置チ，リを後工程の機械加工に
よって形成される予定の半円状のピン受け面１２'のそ
れぞれ半円周端位置ヌ，ルまで近づけた。それにより後
工程の機械加工にてφｄ'なる眞円の穴を穴明加工を完
了したときには、Ｕ字穴１７の開口部を形成するために
切断する板長さを最短限度の寸法Ｓ１'，Ｓ２'にするこ
とができる。この場合においても、上述した本発明実施
形態と同様に切断後の手入れの手間と時間を大幅に低減
し、またその切断後の開口面精度を向上させることがで
きる。Next, the operation brought about by the method of forming the U-shaped hole 17 according to another embodiment of the present invention will be described. In other embodiments of the present invention,
U-shaped hole 1
The fusing notches 18 and 19 are cut along the lines e and w, respectively, which will be the openings of 7, and the maximum cutting end positions h and r of the fusing notches 14 and 15 will be formed by machining in a later step. Of the semicircular pin receiving surfaces 12 ′ of the above-mentioned semicircular pin end surfaces, respectively. Accordingly, when the drilling of a perfect circular hole of φd ′ is completed by machining in the post-process, the length of the plate cut to form the opening of the U-shaped hole 17 is reduced to the shortest dimension S1 ′, S2 '. Also in this case, as in the above-described embodiment of the present invention, it is possible to greatly reduce the labor and time for maintenance after cutting, and to improve the opening surface accuracy after cutting.
【００１２】[0012]
【発明の効果】従来技術の案内用Ｕ字穴の成形法では、
粗材鋼板の板取り溶断加工時に、後工程の穴明機械加工
後に形成する案内用Ｕ字穴の開口部分の外側を直線状に
溶断していた。そのために案内用Ｕ字穴のピン受け面を
形成するための眞円穴を穴明加工するとき穴の変形は防
止できるが、開口部分の溶断時にその溶断長さがかなり
長く、溶断後の溶断面のグラインダ仕上げに大なる手間
と時間を要していたので、製作コストが高かった。しか
し本発明の成形法では、粗材鋼板に対して板取り溶接加
工を行うとき、案内用Ｕ字穴の開口部となる線に沿って
溶断ノッチ部を切込み、その溶断ノッチ部の最大切込み
端位置を、後工程の機械加工によって形成される予定の
半円状のピン受け面のそれぞれ半円周端位置まで近付け
た。それにより後工程のピン受け面を形成するための穴
明機械加工を完了したときには、案内用Ｕ字穴の開口部
を切断する板長さを最短限度の寸法にすることができ
る。上記切断長さを非常に短くしたので、切断後の手入
れの手間と時間を大巾に低減し、製作費のコストダウン
が可能になる。また上記切断後の開口面精度を向上させ
ることがでる。According to the conventional method of forming a U-shaped guide hole,
At the time of cutting and fusing of the coarse steel sheet, the outside of the opening of the guiding U-shaped hole formed after the drilling machining in the subsequent process is fusing linearly. Therefore, when drilling a perfect circular hole for forming the pin receiving surface of the guide U-shaped hole, deformation of the hole can be prevented, but the fusing length is considerably long when fusing the opening, and fusing after fusing. The production cost was high because it took a lot of trouble and time to grind the surface. However, in the forming method of the present invention, when performing plate-cut welding on a coarse steel plate, the fusing notch is cut along a line that becomes the opening of the guide U-shaped hole, and the maximum cutting end of the fusing notch is formed. The positions were brought close to the semicircular end positions of the semicircular pin receiving surfaces to be formed by machining in a post-process. Thereby, when the drilling machining for forming the pin receiving surface in the subsequent process is completed, the length of the plate for cutting the opening of the guide U-shaped hole can be reduced to the shortest dimension. Since the cutting length is very short, the labor and time for maintenance after cutting can be greatly reduced, and the production cost can be reduced. In addition, the precision of the opening surface after the cutting can be improved.
【図１】本発明の案内用Ｕ字穴の成形法を示す図であ
る。FIG. 1 is a diagram showing a method for forming a U-shaped hole for guidance according to the present invention.
【図２】本発明の成形法を用いた他実施例板取り溶断形
状を示す図である。FIG. 2 is a view showing a plate cutting and fusing shape in another example using the molding method of the present invention.
【図３】超ロング作業アタッチメントを装備した油圧シ
ョベルの側面図である。FIG. 3 is a side view of a hydraulic shovel equipped with a very long work attachment.
【図４】図３のＡ部における連結部を分離せしめた状態
を示す図である。FIG. 4 is a view showing a state where a connecting portion in a portion A of FIG. 3 is separated.
【図５】図４のＢより見た平面図である。FIG. 5 is a plan view seen from B in FIG. 4;
【図６】図４のＣ部詳細図である。FIG. 6 is a detailed view of a portion C in FIG. 4;
【図７】第１従来例案内用Ｕ字穴の成形法を示す図であ
る。FIG. 7 is a diagram showing a method of forming a U-shaped hole for guiding the first conventional example.
【図８】第２従来例案内用Ｕ字穴の成形法を示す図であ
る。FIG. 8 is a view showing a method of forming a U-shaped hole for guidance according to a second conventional example.
１ 超ロング作業アタッチメント ３ 基端側ブーム ５ 中継ぎブーム ８，８'，１７ 案内用Ｕ字穴 １１ ガイドピン １２，１２' ピン受け面 １３ 開口部 １４，１５，１８，１９ 溶断ノッチ部 １６ フックブラケット DESCRIPTION OF SYMBOLS 1 Ultra long work attachment 3 Base end boom 5 Intermediate boom 8, 8 ', 17 U-shaped guide hole 11 Guide pin 12, 12' Pin receiving surface 13 Opening 14, 15, 18, 19 Fusing notch 16 Hook bracket
───────────────────────────────────────────────────── フロントページの続き (51)Int.Cl.7 識別記号 ＦＩ Ｂ２３Ｋ 26/00 ３２０ Ｂ２３Ｋ 26/00 ３２０Ａ Ｅ０２Ｆ 9/00 Ｅ０２Ｆ 9/00 Ｚ (58)調査した分野(Int.Cl.7，ＤＢ名) B23P 13/00 B23B 35/00 B23B 41/00 B23K 7/00 508 B23K 10/00 501 B23K 26/00 320 E02F 9/00 ──────────────────────────────────────────────────続 き Continuation of front page (51) Int.Cl. 7 identification code FI B23K 26/00 320 B23K 26/00 320A E02F 9/00 E02F 9/00 Z (58) Fields investigated (Int.Cl. 7 , DB name) B23P 13/00 B23B 35/00 B23B 41/00 B23K 7/00 508 B23K 10/00 501 B23K 26/00 320 E02F 9/00
Claims (1)
トなどを構成する鋼板構造物に、所定の曲率半径を有す
る半円状のピン受け面と、そのピン受け面を外部側に開
口する開口部を有する案内用Ｕ字穴を形成するとき、少
なくとも上記半円状のピン受け面は機械加工により形成
するようにした案内用Ｕ字穴の成形法であって、案内用
Ｕ字穴を形成するための粗材鋼板に対して板取り溶断加
工を行うとき、案内用Ｕ字穴の開口部となる線に沿って
溶断ノッチ部を切込み、その溶断ノッチ部の最大切込み
端位置を、後工程で形成される予定の眞円の穴が穴明加
工可能な距離まで近付け、後工程にて半円状のピン受け
面を形成するために機械加工にて眞円の穴を穴明加工
し、その眞円の穴の内周面に接するように上記最大切込
み端と上記半円周端との間の最短限度の板部を切断する
ようにしたことを特徴とする鋼板構造物における案内用
Ｕ字穴の成形法。1. A steel plate structure forming a work attachment of a construction machine, a work vehicle, or the like, includes a semicircular pin receiving surface having a predetermined radius of curvature, and an opening for opening the pin receiving surface to the outside. When forming the guiding U-shaped hole having at least the semicircular pin receiving surface is a forming method of the guiding U-shaped hole formed by machining, and is used for forming the guiding U-shaped hole. When performing plate cutting and fusing processing on coarse steel sheet, cut the fusing notch along the line that will be the opening of the U-shaped guide hole, and form the maximum cutting end position of the fusing notch in the post-process The hole of the perfect circle that is going to be
Close up Engineering possible distance, the holes in the truth yen at machined to form a semi-circular pin receiving surface at a later step to AnaAkira processing, so as to contact the inner circumferential surface of the hole of the true ¥ A method of forming a U-shaped hole for guiding in a steel plate structure, wherein a shortest limit plate portion between the maximum cut end and the semicircular end is cut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03306888A JP3116475B2 (en) | 1991-10-24 | 1991-10-24 | Method of forming U-shaped guide hole in steel plate structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP03306888A JP3116475B2 (en) | 1991-10-24 | 1991-10-24 | Method of forming U-shaped guide hole in steel plate structure |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH05116010A JPH05116010A (en) | 1993-05-14 |
| JP3116475B2 true JP3116475B2 (en) | 2000-12-11 |
Family
ID=17962465
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP03306888A Expired - Lifetime JP3116475B2 (en) | 1991-10-24 | 1991-10-24 | Method of forming U-shaped guide hole in steel plate structure |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3116475B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5865753B2 (en) | 2012-03-28 | 2016-02-17 | コマツ産機株式会社 | Combined processing method and combined processing apparatus |
-
1991
- 1991-10-24 JP JP03306888A patent/JP3116475B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH05116010A (en) | 1993-05-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US6832818B2 (en) | Milling drum for road working machine | |
| EP0773375B1 (en) | Processing method for connecting rod | |
| JP3116475B2 (en) | Method of forming U-shaped guide hole in steel plate structure | |
| EP0348798B1 (en) | Method of making a valve sleeve | |
| CN108115354A (en) | A kind of process for controlling thin-walled semicircular ring machining deformation | |
| JP2000288813A (en) | Double chamfering drill | |
| JP3755404B2 (en) | Mold correction method | |
| US5977509A (en) | Method for full penetration electron beam weld for downhold tools | |
| CN109848344A (en) | Knuckle ear end face and pan portion near-net-shape forging technology | |
| JPH0377740A (en) | Forging punch | |
| CN114871710B (en) | Slender shaft-shaped centering structural part machining method | |
| JPS6250245B2 (en) | ||
| JPS62102302A (en) | Setting method for tool path | |
| JP2606264B2 (en) | Manufacturing method of steering yoke | |
| JPH05200634A (en) | Manufacturing of steering main shaft | |
| JPH01289611A (en) | Rounding machining method for bend portion in bent hole | |
| JP7278258B2 (en) | Chuck mechanism and its manufacturing method | |
| JPH077050Y2 (en) | Hole processing equipment | |
| CN116275888A (en) | Processing method of torsion Liang Zhougeng bracket | |
| JPS588875A (en) | Method of working valve sleeve of spool valve | |
| JPH02180518A (en) | Soldering type drilling tool | |
| JPS5933065B2 (en) | Groove formation method for thick-walled pipe welds | |
| JPH042747Y2 (en) | ||
| CN118106709A (en) | Method and system for machining rotary sleeve parts | |
| JPS62140723A (en) | Manufacture of trimming mold |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081006 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20081006 Year of fee payment: 8 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20091006 Year of fee payment: 9 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101006 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20101006 Year of fee payment: 10 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20111006 Year of fee payment: 11 |
|
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121006 Year of fee payment: 12 |
|
| EXPY | Cancellation because of completion of term | ||
| FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20121006 Year of fee payment: 12 |