JP2006181584A - Method and apparatus for manufacturing cylinder having special cross sectional shape - Google Patents

Method and apparatus for manufacturing cylinder having special cross sectional shape Download PDF

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JP2006181584A
JP2006181584A JP2004375611A JP2004375611A JP2006181584A JP 2006181584 A JP2006181584 A JP 2006181584A JP 2004375611 A JP2004375611 A JP 2004375611A JP 2004375611 A JP2004375611 A JP 2004375611A JP 2006181584 A JP2006181584 A JP 2006181584A
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section
cylindrical body
shaping
shaping rod
cylinder
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Daisuke Matsuzaka
大輔 松阪
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HAYASHI TEKKOSHO KK
SHINBA IRON WORKS Inc
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HAYASHI TEKKOSHO KK
SHINBA IRON WORKS Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a method and an apparatus for manufacturing a cylinder having a special cross sectional shape, such as an outer pipe of a muffler of a motor bicycle, by which method and apparatus, a product can be formed without causing flaws on the surface of the product, and further can be manufactured by few working processes. <P>SOLUTION: The method for manufacturing the cylinder having the special cross sectional shape uses the apparatus 100 comprising one forming rod 1 inserted into a cylindrical body 10 having a circular cross section, the other forming rods 3, 5 independently inserted into the cylindrical body having the circular cross section, and pulling means 30, 40 for relatively moving the one forming rod and the other forming rods so as to separate from each other by a required distance. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、自動二輪車用マフラーの外筒等に用いる異形断面筒体の製造方法と異形断面筒体の製造装置に係り、特に、筒体の異形断面への加工時に製品の表面に傷が付くことがないようにしたものに関する。   The present invention relates to a method for manufacturing a modified cross-section cylinder used for an outer cylinder of a muffler for a motorcycle, and a manufacturing apparatus for a modified cross-section cylinder, and in particular, the surface of a product is scratched when the cylinder is processed into a modified cross-section. It relates to things that have never happened.

従来から自動二輪車用のマフラーやその他の用途に使用される異形断面の筒体の製造方法及びその装置が多く提供されている。その代表的な構成を以下説明する。まず、テーパー三角管の製造方法は、平板を折り曲げて三角形に加工しそのエッヂを溶接し、この三ヶ所の角部を加圧ローラで加圧させて仕上げることによりテーパー三角管を製造するものである。（例えば、特許文献１参照。）。   2. Description of the Related Art Conventionally, many methods and apparatuses for manufacturing a cylindrical body with a modified cross section used for motorcycle mufflers and other applications have been provided. A typical configuration will be described below. First, a tapered triangular tube is manufactured by bending a flat plate into a triangle, welding its edges, and pressurizing these three corners with a pressure roller to finish the taper triangular tube. is there. (For example, refer to Patent Document 1).

また、フレア管の製造方法およびその装置は、管端部が拡管されたフレア管を製造する装置であって、管の中心にほぼ一致して回転する回転体と、該回転体に対称的に取り付けられて、その回転重心を管外側に有し、円錐台状のローラを備えた少なくとも２個の拡管冶具と、該拡管冶具を管内径に合わせて位置決めするストッパとから構成することにより、多くの冶具や加熱装置を必要とせずにフレア管を製造することを可能とするものである。（例えば、特許文献２参照。）。   A flare tube manufacturing method and apparatus therefor include a flare tube having an expanded tube end, a rotating body that rotates substantially coincident with the center of the tube, and a symmetric body with the rotating body. A large number of pipe expansion jigs that are attached and have a rotational center of gravity on the outside of the pipe and are provided with a truncated cone-shaped roller, and a stopper that positions the pipe expansion jig in accordance with the pipe inner diameter. This makes it possible to manufacture a flare tube without the need for a jig or a heating device. (For example, refer to Patent Document 2).

更に、オートバイ用チタン製一体型サイレンサーボディとその製造方法は、チタン金属板を一体成形加工により形成し、小径開口部と、該小径開口部に連続して形成され径が増大する肩部と、前記肩部に連続する大径筒部とを有する構造とし、一枚チタン円板をプレス加工とスピニング加工を組み合わせて最終的なオートバイ用のチタン製一体型サイレンサーボディを製造するものである。（例えば、特許文献３参照。）。   Furthermore, the titanium integrated silencer servodie for motorcycles and the manufacturing method thereof are formed by integrally forming a titanium metal plate, a small diameter opening, and a shoulder formed continuously from the small diameter opening and having an increased diameter, The structure has a large-diameter cylindrical portion that is continuous with the shoulder portion, and a single titanium disc is combined with pressing and spinning to produce a final titanium integrated siren servody for motorcycles. (For example, refer to Patent Document 3).

特公昭５１−３３０６９号公報Japanese Patent Publication No.51-33069 特開平８−１２５７号公報JP-A-8-1257 特開２００３−９７２４５号公報JP 2003-97245 A

上記従来の構成によると次のような問題があった。すなわち、従来の製造方法は、平板を折り曲げて三角形に加工しそのエッヂを溶接し、この三ヶ所の角部を加圧ローラで加圧させて仕上げるものであったり、円錐台状のローラを備えた少なくとも２個の拡管冶具により拡管加工するものであったり、一枚チタン円板をプレス絞り加工とスピニング加工で筒状に加工するものであるから、自動二輪車用のマフラーその他の用途に使用される異形断面の筒体には高いデザイン性と商品性と装飾性が要求されているにもかかわらず製品の表面に傷が付き易いという問題があった。また、この傷を取り除くために、バフ研磨等の二次加工が必要になり工程が増加してしまうという問題かあった。また、異形断面筒体の完成までに多工程を要するため製造コストが高くつくとともに、プレス機や専用金型が必要となり、インライン化が困難であるという問題があった。   The conventional configuration has the following problems. In other words, the conventional manufacturing method involves bending a flat plate into a triangle, welding its edges, and pressing these three corners with a pressure roller to finish, or having a truncated cone-shaped roller. In addition, it is used for pipe mufflers for motorcycles and other applications because it is used for pipe expansion processing with at least two pipe expansion jigs, or for processing a single titanium disk into a cylinder by press drawing and spinning. However, there is a problem in that the surface of the product is easily damaged even though the cylindrical body having an irregular cross section is required to have high designability, merchantability and decorativeness. In addition, in order to remove the scratch, secondary processing such as buffing is required, which increases the number of processes. In addition, since a multi-step process is required to complete the modified cross-section cylindrical body, the manufacturing cost is high, and a press machine and a dedicated die are required, making it difficult to inline.

本発明はこのような点に基づいてなされたものでその目的とするところは、自動二輪車用マフラーの外筒等に用いる異形断面筒体の加工時に製品の表面に傷が付くことなく加工でき、しかも、少ない加工工程で製造可能な異形断面筒体の製造方法とその製造装置を提供することにある。   The present invention has been made on the basis of such points, the purpose of which can be processed without scratching the surface of the product when processing a modified cross-section cylinder used for the outer cylinder of a muffler for motorcycles, And it is providing the manufacturing method and manufacturing apparatus of the irregular cross-section cylinder which can be manufactured with few process steps.

上記目的を達成するべく本発明の請求項１による異形断面筒体の製造方法は、円形断面の筒体内に一方の整形棒を挿通するとともに他方の整形棒を挿通し、上記一方の整形棒と他方の整形棒を離間する方向に所定量を相対的に移動させ、上記筒体を所定の異形断面に加工することを特徴とするものである。   In order to achieve the above object, a method of manufacturing a modified cross-section cylinder according to claim 1 of the present invention includes inserting one shaping rod into a circular cross-section cylinder and inserting the other shaping rod, A predetermined amount is relatively moved in a direction in which the other shaping rod is separated to process the cylindrical body into a predetermined irregular cross section.

また、請求項２による異形断面筒体の製造方法は、請求項１記載の異形断面筒体の製造方法において、上記一方の整形棒に対し、他方の整形棒を複数挿通し、それぞれ異なる方向に相対的に移動させることを特徴とするものである。   According to a second aspect of the present invention, there is provided a modified cross-section cylinder manufacturing method according to the first aspect, wherein a plurality of the other shaping rods are inserted into the one shaping rod in different directions. It is characterized by relatively moving.

また、請求項３による異形断面筒体の製造方法は、請求項１又は２記載の異形断面筒体の製造方法において、上記一方の整形棒を固定し、他方の整形棒を離間する方向に移動させるようにしたことを特徴とするものである。   According to a third aspect of the present invention, there is provided a modified cross-section cylindrical body manufacturing method according to the first or second aspect, in which the one shaping rod is fixed and the other shaping rod is moved in a separating direction. It is characterized by the fact that it has been allowed to.

また、請求項４による異形断面筒体の製造方法は、請求項１又は２又は３記載の異形断面筒体の製造方法において、上記筒体の中間膨出部を押圧することを特徴とするものである。   According to a fourth aspect of the present invention, there is provided a method for producing a modified cross-section cylindrical body according to the first, second or third aspect, wherein the intermediate bulging portion of the cylindrical body is pressed. It is.

また、請求項５による異形断面筒体の製造装置は、円形断面の筒体内に挿通される一方の整形棒と、円形断面の筒体内に別個に挿通される他方の整形棒と、上記他方の整形棒と一方の整形棒とを離間する方向へ所定量を相対的に移動させる牽引手段と、を具備したことを特徴とするものである。   According to a fifth aspect of the present invention, there is provided an apparatus for producing a modified cross-section cylinder, one shaping rod inserted into a circular cross-section cylinder, the other shaping rod inserted separately into a circular cross-section cylinder, and the other shaping rod. And a traction means for relatively moving a predetermined amount in a direction in which the shaping rod and one shaping rod are separated from each other.

また、請求項６による異形断面筒体の製造装置は、請求項５記載の異形断面筒体の製造装置において、上記牽引手段は、整形棒を油圧シリンダ機構で引っ張るようにしたものであることを特徴とするものである。   According to a sixth aspect of the present invention, there is provided an apparatus for manufacturing a modified cross-section cylindrical body according to the fifth aspect, wherein the traction means is configured to pull the shaping rod with a hydraulic cylinder mechanism. It is a feature.

また、請求項７による異形断面筒体の製造装置は、請求項５又は６記載の異形断面筒体の製造装置において、上記一方の整形棒と他方の整形棒との中間部に相対的に離間することにより形成される筒体の膨出部を押圧することにより修正する押圧手段を備えたことを特徴とするものである。   According to a seventh aspect of the present invention, there is provided a modified cross-section cylinder manufacturing apparatus according to the fifth or sixth aspect, wherein the modified cross-section cylinder manufacturing apparatus is relatively spaced apart from an intermediate portion between the one shaping rod and the other shaping rod. It has a pressing means for correcting by pressing the bulging portion of the cylindrical body formed by doing so.

上記本発明の異形断面筒体の製造方法によると、筒体を異形断面に加工する際、一方の整形棒と他方の整形棒を離間する方向に所定量を相対的に移動させることにより行なうものである。整形棒が筒体の内壁を引っ張って変形させる方法であるから、筒体の表面に傷が全く生じない。   According to the method for producing a modified cross-section cylindrical body of the present invention, when a cylindrical body is processed into a modified cross-section, it is performed by relatively moving a predetermined amount in the direction of separating one shaping rod and the other shaping rod. It is. Since the shaping rod is a method of pulling and deforming the inner wall of the cylindrical body, the surface of the cylindrical body is not damaged at all.

また、一方の整形棒に対し、他方の整形棒を複数本以上用意し、これらを任意な方向へ離間させることで任意形状の異形断面筒体が製造できる。この時、整形棒の一方を固定し、他方の整形棒だけを移動させる構成とすれば機構が簡単になる。更に、筒体の中間膨出部を中心側に押圧する工程を付加することにより、膨出部の整形が可能となる。   In addition, a plurality of other shaping rods are prepared for one shaping rod, and an irregularly shaped cross-section cylinder having an arbitrary shape can be manufactured by separating them in an arbitrary direction. At this time, if one of the shaping rods is fixed and only the other shaping rod is moved, the mechanism becomes simple. Furthermore, the bulging portion can be shaped by adding a step of pressing the intermediate bulging portion of the cylindrical body toward the center side.

また、整形棒の牽引手段としては、油圧シリンダ機構で引っ張るようにしたから、大きな力で整形棒が移動できる。更に、上記押圧手段は、一方の整形棒と他方の整形棒との中間部に相対的に離間することにより形成される筒体の膨出部を押圧して修正する。   Further, the shaping rod is pulled by the hydraulic cylinder mechanism as the shaping means, so that the shaping rod can be moved with a large force. Further, the pressing means presses and corrects the bulging portion of the cylindrical body formed by being relatively separated from an intermediate portion between one shaping rod and the other shaping rod.

本発明の異形断面筒体の製造方法と製造装置によると、表面に傷がなく正確な形状を備えた高いデザイン性と商品性と装飾性を有する異形断面筒体を少ない工程で一挙に製造することができ、該製品を安価に提供することができる。また、筒体の中間膨出部を押圧手段で強制的に押圧することにより、より正確な形状の製品を製造することができる。   According to the method and apparatus for producing a modified cross-section cylindrical body of the present invention, a modified cross-section cylindrical body having high design, merchantability, and decorativeness with an accurate shape without any scratches on the surface is manufactured at a time in a few steps. And the product can be provided at low cost. Moreover, a product with a more accurate shape can be manufactured by forcibly pressing the intermediate bulging portion of the cylindrical body with the pressing means.

以下、図１乃至図９を参照して本発明の第１の実施の形態を説明する。図１は自動二輪車用マフラーに使用される異形断面筒体の製造方法を示す斜視図、図２は各種異形断面筒体の端面図、図３は整形棒の変形例の端面図、図４は異形断面筒体製造装置の正面図、図５は側面図、図６は側面図、図７は筒体の装着・離脱の作用図、図８は三角形断面筒体の加工工程図、図９は端面図である。   Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a perspective view showing a method of manufacturing a modified cross-section cylinder used in a motorcycle muffler, FIG. 2 is an end view of various modified cross-section cylinders, FIG. 3 is an end view of a modification of a shaping rod, and FIG. FIG. 5 is a side view, FIG. 6 is a side view, FIG. 7 is an operation view of mounting and detaching a cylinder, FIG. 8 is a process diagram of a triangular section cylinder, and FIG. It is an end view.

まず、略三角形状の異形断面筒体１０Ａの製造方法を説明する。図１（ａ）において、円形断面筒体１０内に、一方の整形棒１を挿通するとともに、他方の整形棒３，５を挿通する。そして、図１（ｂ）において、上記一方の整形棒１と他方の整形棒３，５を離間する方向に所定量相対的に移動させ、上記筒体１０を所定の三角形の異形断面筒体１０Ａに加工する。上記整形棒１、３、５は円形又は円弧形に形成され、その曲率半径は製造する異形断面筒体１０Ａの曲面形状の曲率半径と同一とする。また、この整形棒１、３、５の相対的な移動量によって異形断面筒体１０Ａの所定の形状に整形する。ストレート状の異形断面筒体の場合は、ストレート状円筒体にストレート状整形棒を挿入配置し、ストレート状整形棒を平行移動して加工を行い、テーパー状の異形断面筒体の場合は、テーパー状円筒体にテーパー状整形棒を使用し、テーパー状整形棒を平行移動して加工を行う。   First, the manufacturing method of the substantially triangular shaped modified cross-section cylinder 10A will be described. In FIG. 1A, one shaping rod 1 is inserted into the circular cross-section cylindrical body 10 and the other shaping rods 3 and 5 are inserted. Then, in FIG. 1B, the one shaping rod 1 and the other shaping rods 3 and 5 are moved relative to each other by a predetermined amount, and the cylindrical body 10A has a predetermined triangular modified cross-section cylindrical body 10A. To process. The shaping rods 1, 3, and 5 are formed in a circular shape or an arc shape, and the curvature radius thereof is the same as the curvature radius of the curved surface shape of the modified cross-section cylindrical body 10A. Further, the shaped rod 1, 3, 5 is shaped into a predetermined shape of the modified cross-section cylindrical body 10 </ b> A by the relative movement amount. In the case of straight irregular cross-section cylinders, straight shaping rods are inserted and arranged in the straight cylindrical bodies, and the straight shaping rods are moved in parallel for processing. In the case of tapered irregular cross-section cylinders, taper A tapered shaped rod is used for the cylindrical body, and the tapered shaped rod is moved in parallel for processing.

また、上記製造方法を応用すれば、図２（ａ）のように、２本の整形棒１，３を筒体１０内に挿通し、一方整形棒１と他方の整形棒３を離間する方向に所定量を相対的に移動させ、上記筒体１０を所定の楕円形の異形断面筒体１０Ｂに加工することができる。また、図２（ｂ）のように、４本の整形棒１，３，５，７を筒体１０内に挿通し、４本の整形棒１，３，５，７をそれぞれ離間する方向に所定量相対的に移動させ、上記筒体１０を所定の四角形の異形断面筒体１０Ｃに加工することができる。更に、図２（ｃ）のように、５本の整形棒１，３，５，７，９を筒体１０内に挿通し、５本の整形棒１，３，５，７，９を離間する方向に所定量相対的に移動させ、上記筒体１０を所定の五角形の異形断面筒体１０Ｄに加工することができる。   Further, if the above manufacturing method is applied, as shown in FIG. 2A, the two shaping rods 1 and 3 are inserted into the cylindrical body 10, and the one shaping rod 1 and the other shaping rod 3 are separated from each other. The cylindrical body 10 can be processed into a predetermined elliptical modified cross-section cylindrical body 10B by relatively moving a predetermined amount. Further, as shown in FIG. 2B, the four shaping rods 1, 3, 5, and 7 are inserted into the cylindrical body 10, and the four shaping rods 1, 3, 5, and 7 are separated from each other. The cylinder 10 can be processed into a predetermined quadrangular modified cross-section cylinder 10C by relatively moving a predetermined amount. Further, as shown in FIG. 2 (c), the five shaping rods 1, 3, 5, 7, 9 are inserted into the cylindrical body 10, and the five shaping rods 1, 3, 5, 7, 9 are separated from each other. The cylinder 10 can be processed into a predetermined pentagonal modified cross-section cylinder 10D.

尚、上記円形断面の筒体１０内に別個に挿通される一方の整形棒１と他方の整形棒３，５，７，９とを離間する方向へ所定量相対的に移動させる引っ張り力は、双方の整形棒に付与しても良いし、一方の整形棒を固定し、他方の整形棒だけに付与してもよい。更に、図３に示すように、整形棒１，３，５等の断面形状は円形（円弧形）に限定されず、筒体１０の２カ所の曲面形状１Ａ、１Ｂに対応した蒲鉾形状や３カ所の曲面形状１Ｃ、１Ｄ、１Ｅに対応したおむすび形状等種々の形状とし得るものである。   In addition, the pulling force that relatively moves the one shaping rod 1 and the other shaping rods 3, 5, 7, and 9 that are separately inserted into the cylindrical body 10 having a circular cross section in a direction away from each other, It may be applied to both shaping rods, or one shaping rod may be fixed and applied only to the other shaping rod. Further, as shown in FIG. 3, the cross-sectional shapes of the shaping rods 1, 3, 5, etc. are not limited to a circular shape (arc shape), and the ridge shapes corresponding to the two curved surface shapes 1 A, 1 B of the cylindrical body 10 Various shapes such as rice ball shapes corresponding to the three curved surface shapes 1C, 1D, and 1E can be used.

次に、図４乃至図７を参照してテーパー三角形状筒体１０Ａを形成する異形断面筒体製造装置１００と異形断面筒体製造方法について説明する。まず、フレーム体Ｆの上部に、円形断面筒体１０内に挿通される一方の整形棒１が配置されている。また、フレーム体Ｆの中間位置には円形断面筒体１０内に別個に挿通される他方の整形棒３，５が配置されている。そして、上記他方の整形棒３，５を一方の整形棒１から離間する方向へ所定量相対的に移動させる牽引手段３０，４０が配置されている。上記整形棒１は、テーパー状を呈していて、テーパー筒体を異形に整形するものである。更に、フレーム体Ｆの円形断面筒体１０の外周に三角形状の異形断面筒体１０Ａにおける各辺の膨出部ａ，ｂ，ｃを押圧する３組の押圧手段５０，６０，７０が配置されている。   Next, the modified cross-section cylinder manufacturing apparatus 100 and the modified cross-section cylinder manufacturing method for forming the tapered triangular cylinder 10A will be described with reference to FIGS. First, on the upper part of the frame body F, one shaping rod 1 inserted into the circular cross-section cylindrical body 10 is arranged. Further, at the intermediate position of the frame body F, the other shaping rods 3 and 5 that are separately inserted into the circular cross-section cylindrical body 10 are arranged. In addition, traction means 30 and 40 for moving the other shaping rods 3 and 5 relative to each other in a direction away from the one shaping rod 1 are disposed. The shaping rod 1 has a tapered shape, and shapes the tapered cylinder into an irregular shape. Further, three sets of pressing means 50, 60, 70 for pressing the bulging portions a, b, c on each side of the triangular cross-section cylindrical body 10A are arranged on the outer periphery of the circular cross-section cylinder 10 of the frame body F. ing.

上記整形棒１はフレーム体Ｆの前後枠Ｆ１，Ｆ２に付設した支持枠Ｆ３，Ｆ４間に水平姿勢に配置され、その一方端１Ａは支持枠Ｆ３に固着されている。また、整形棒１の他方端１Ｂは、支持枠Ｆ４との間に可動片１１と接続片１３とをボルトＢにより着脱可能に連結される。尚、ボルトＢに代えてピンにより着脱可能に連結しても良い。整形棒１に円形断面筒体１０を挿通させるには、図７に示すように、接続片１３から可動片１１を外した状態とし、この状態で整形棒１に円形断面筒体１０を挿通させた後、接続片１３に可動片１１を係合してボルトＢで連結させる。成形後の筒体１０Ａは、接続片１３から可動片１１を外した状態で取り外される。   The shaping rod 1 is disposed in a horizontal posture between the support frames F3 and F4 attached to the front and rear frames F1 and F2 of the frame body F, and one end 1A thereof is fixed to the support frame F3. In addition, the other end 1B of the shaping rod 1 is detachably connected to the movable piece 11 and the connecting piece 13 by a bolt B between the support frame F4. In addition, it may replace with the volt | bolt B and may be connected so that attachment or detachment is possible with a pin. In order to insert the circular cross-section cylindrical body 10 into the shaping rod 1, as shown in FIG. 7, the movable piece 11 is removed from the connection piece 13, and in this state, the circular cross-section cylindrical body 10 is inserted into the shaping rod 1. After that, the movable piece 11 is engaged with the connecting piece 13 and coupled with the bolt B. The molded cylinder 10 </ b> A is removed with the movable piece 11 removed from the connection piece 13.

次に、上記他方の整形棒３，５とこの牽引手段３０，４０の構成を説明する。まず、フレーム体Ｆの前後枠Ｆ１，Ｆ２の中間位置に支持体１５，１７が水平に設置される。上記支持体１５，１７には、各々の前後位置に垂直姿勢のガイド筒１５Ａ，１５Ｂおよび１７Ａ，１７Ｂが取り付けられている。上記ガイド筒内に昇降棒１５Ｃ，１５Ｄおよび１７Ｃ，１７Ｄが挿通されている。上記昇降棒１５Ｃ，１５Ｄおよび１７Ｃ，１７Ｄの上部には、テーパー状の整形棒３及び５が水平姿勢に取り付けられている。整形棒３及び５の一方端３Ａ及び５Ａは昇降棒１５Ｃ及び１７Ｃに枢支されている。また、整形棒３，５の他方端３Ｂ及び５Ｂは、昇降棒１５Ｄ及び１７Ｄに可動片１８及び１９と接続片１８Ａ及び１９ＡとをボルトＢ１及びＢ２を介して連結している。尚、ボルトＢに代えてピンにより着脱可能に連結しても良い。   Next, the configuration of the other shaping rods 3 and 5 and the pulling means 30 and 40 will be described. First, the support bodies 15 and 17 are horizontally installed in the middle position between the front and rear frames F1 and F2 of the frame body F. The support bodies 15 and 17 are provided with guide cylinders 15A and 15B and 17A and 17B in a vertical posture at respective front and rear positions. Elevating bars 15C, 15D and 17C, 17D are inserted through the guide cylinder. Tapered shaping rods 3 and 5 are mounted in a horizontal posture on the upper portions of the lifting rods 15C and 15D and 17C and 17D. One ends 3A and 5A of the shaping rods 3 and 5 are pivotally supported by the lifting rods 15C and 17C. The other ends 3B and 5B of the shaping rods 3 and 5 connect the movable pieces 18 and 19 and the connecting pieces 18A and 19A to the lifting rods 15D and 17D via bolts B1 and B2. In addition, it may replace with the volt | bolt B and may be connected so that attachment or detachment is possible with a pin.

また、上記昇降棒１５Ｃ，１５Ｄおよび１７Ｃ，１７Ｄの下部間に連接体２１及び２３が取付けられていて、この連接体２１及び２３の中腹部と支持体１５及び１７の中腹部間に油圧シリンダ機構ＯＣ１及びＯＣ２が接続されている。上記油圧シリンダ機構ＯＣ１及びＯＣ２のピストンロッドＰ１，Ｐ２を伸長することにより、上記昇降棒１５Ｃ，１５Ｄ及び１７Ｃ，１７Ｄが下降し、上部に設置した整形棒３，５に引っ張り力が付与される。   Further, connecting members 21 and 23 are attached between the lower portions of the lifting rods 15C, 15D and 17C, 17D, and a hydraulic cylinder mechanism is provided between the middle portions of the connecting members 21 and 23 and the middle portions of the support members 15 and 17. OC1 and OC2 are connected. When the piston rods P1, P2 of the hydraulic cylinder mechanisms OC1 and OC2 are extended, the lifting rods 15C, 15D and 17C, 17D are lowered, and a pulling force is applied to the shaping rods 3, 5 installed on the top.

上記整形棒３，５に筒体１０を挿嵌させるには、図７に示すように、接続片１８Ａ及び１９Ａから可動片１８及び１９を外した状態とし、この状態で整形棒３，５に筒体１０を挿通させた後、可動片１８及び１９と接続片１８Ａ及び１９Ａを係合してボルトＢ１及びＢ２で連結させる。   In order to insert the cylindrical body 10 into the shaping rods 3 and 5, as shown in FIG. 7, the movable pieces 18 and 19 are removed from the connecting pieces 18A and 19A. After the cylindrical body 10 is inserted, the movable pieces 18 and 19 and the connecting pieces 18A and 19A are engaged and connected by bolts B1 and B2.

次に、図４及び図５を参照して押圧手段５０，６０，７０について説明する。まず、フレーム体Ｆの左右上部と中央部には支持体２５，２６，２７が設置され、この前後位置にガイド筒２５Ａ，２５Ｂおよび２６Ａ，２６Ｂおよび２７Ａ，２７Ｂが取り付けられている。上記ガイド筒内に昇降棒２５Ｃ，２５Ｄおよび２６Ｃ，２６Ｄおよび２７Ｃ，２７Ｄが挿通されている。上記昇降棒２５Ｃ，２５Ｄおよび２６Ｃ，２６Ｄおよび２７Ｃ，２７Ｄの先端部には、半円断面の押圧体３１，３３，３５が水平姿勢に取り付けられている。上記支持体２５，２６，２７の下側及び左右外側に油圧シリンダ機構ＯＣ３，ＯＣ４が設置され、このピストンロッドＰ４，Ｐ５，Ｐ６が上記押圧体３１，３３，３５の裏面中央部に接続されている。しかして、油圧シリンダ機構ＯＣ３，ＯＣ４，ＯＣ５のピストンロッドＰ４，Ｐ５，Ｐ６を伸長させることにより、押圧体３１，３３，３５が図４に示すように、三角形への整形時に膨出部として残る筒体１０の外周面ａ，ｂ，ｃに左右上方及び下方の三方から押圧力が付与される。   Next, the pressing means 50, 60, 70 will be described with reference to FIGS. First, support bodies 25, 26, and 27 are installed on the left and right upper and center portions of the frame body F, and guide tubes 25A, 25B and 26A, 26B, and 27A and 27B are attached to the front and rear positions. Elevating rods 25C, 25D and 26C, 26D and 27C, 27D are inserted into the guide cylinder. Press bodies 31, 33, and 35 having a semicircular cross section are attached in a horizontal posture to the tip ends of the lifting rods 25C, 25D and 26C, 26D, 27C, and 27D. The hydraulic cylinder mechanisms OC3, OC4 are installed below the support bodies 25, 26, 27 and on the left and right sides, and the piston rods P4, P5, P6 are connected to the center of the back surface of the pressing bodies 31, 33, 35. Yes. Thus, by extending the piston rods P4, P5, P6 of the hydraulic cylinder mechanisms OC3, OC4, OC5, the pressing bodies 31, 33, 35 remain as bulging portions when being shaped into a triangle as shown in FIG. A pressing force is applied to the outer peripheral surfaces a, b, and c of the cylindrical body 10 from the left and right upper and lower sides.

次に、図８及び図９を参照して上記異形断面筒体の製造装置１００による三角形のテーパー状の異形断面筒体８０Ｂの製造方法を説明する。まず、鉄製の薄板８０を図８（イ）に示す形状に切断する。この薄板８０の両縁を接合して円筒体８０Ａとする。この円筒体８０Ａを製造装置１００における３本の整形棒１，３，５に装着する。その方法は、図７（ａ）に示すように、各整形棒１，３，５の位置を接近し合った状態でその片端を解放する。上記３本の整形棒１，３，５の片側から円筒体８０Ａを挿入する。この後、図７（ｂ）に示すように、整形棒１，３，５の解放端を図７（ｂ）に示すように、閉塞して円筒体８０Ａを整形棒１に固定する。続いて、図４に示すように、牽引手段３０，４０の油圧シリンダ機構ＯＣ１及びＯＣ２を作動させて、整形棒１に対して整形棒３，５を離間する下外側方向に所定量相対的に移動させる。この時、上記円筒体８０Ａが所定の異形断面形状に加工されるように、筒体８０Ａのスプリングバック量を考慮した所定の移動量に制御される。   Next, with reference to FIGS. 8 and 9, a method of manufacturing the triangular tapered tubular cross-section 80 </ b> B using the irregular cross-section tubular manufacturing apparatus 100 will be described. First, the iron thin plate 80 is cut into the shape shown in FIG. Both edges of the thin plate 80 are joined to form a cylindrical body 80A. The cylindrical body 80A is attached to the three shaping rods 1, 3, and 5 in the manufacturing apparatus 100. In this method, as shown in FIG. 7 (a), one end of the shaping rods 1, 3, and 5 is released with the positions thereof approaching each other. The cylindrical body 80A is inserted from one side of the three shaping rods 1, 3, and 5. Thereafter, as shown in FIG. 7B, the open ends of the shaping rods 1, 3 and 5 are closed as shown in FIG. 7B to fix the cylindrical body 80A to the shaping rod 1. Subsequently, as shown in FIG. 4, the hydraulic cylinder mechanisms OC1 and OC2 of the traction means 30 and 40 are operated to relatively move the predetermined amount in the lower outer direction separating the shaping rods 3 and 5 from the shaping rod 1. Move. At this time, the cylinder body 80A is controlled to a predetermined movement amount in consideration of the spring back amount of the cylinder body 80A so that the cylindrical body 80A is processed into a predetermined irregular cross-sectional shape.

更に、図４に示すように、筒体１０の外周３ヶ所に配置した押圧手段５０，６０，７０は、この油圧シリンダ機構ＯＣ３，ＯＣ４，ＯＣ５でピストンロッドＰ４，Ｐ５，Ｐ６を作動させて、押圧体３１，３３，３５を三角形への整形時に膨出部として残る筒体１０の外周面ａ，ｂ，ｃに左右上方及び下方の三方から押圧する。この場合も筒体８０Ａのスプリングバックを見込んで余分に押し込み、所望の三角形に形状を整える。テーパー状の三角形断面筒体８０Ｂの形状寸法は、例えば、図８（ロ）に示すように、大孔端の三角曲面はＲ３１．２となり、小孔端の三角曲面もＲ３１．２とする。尚、図９に示すように、円筒体８０Ａから三角筒体８０Ｂへの加工は、固定した整形棒１に対して、可動する整形棒３，５を実線位置から一点鎖線で示す離間側への移動により行うものであり、円筒体８０Ａの外周３ヶ所に配置する押圧手段５０，６０，７０は不要であれば取り外しても良い。   Further, as shown in FIG. 4, the pressing means 50, 60, 70 arranged at three locations on the outer periphery of the cylinder 10 actuate the piston rods P 4, P 5, P 6 with the hydraulic cylinder mechanisms OC 3, OC 4, OC 5, The pressing bodies 31, 33, and 35 are pressed against the outer peripheral surfaces a, b, and c of the cylindrical body 10 that remains as the bulging portion during shaping into a triangle from the left, right, upper and lower sides. Also in this case, in anticipation of the spring back of the cylindrical body 80A, it is pushed in excessively, and the shape is adjusted to a desired triangle. For example, as shown in FIG. 8 (b), the shape of the tapered triangular cross-section cylinder 80B is such that the triangular curved surface at the large hole end is R31.2 and the triangular curved surface at the small hole end is also R31.2. As shown in FIG. 9, the processing from the cylindrical body 80A to the triangular cylindrical body 80B is performed by moving the movable shaping rods 3 and 5 from the solid line position to the separated side indicated by the one-dot chain line with respect to the fixed shaping rod 1. The pressing means 50, 60, 70 arranged at three locations on the outer periphery of the cylindrical body 80A may be removed if unnecessary.

以上本実施の形態によると次のような効果を奏することができる。まず、上記異形断面筒体の製造装置１００と異形断面筒体の製造方法によると、表面に傷がなく正確な形状を備えた高いデザイン性と商品性と装飾性を有する異形断面筒体を少ない工程で一挙に製造することができ、該製品を安価に提供することができる。これは、筒体の内部に配置した整形棒１，３，５を離間させるだけで加工できるからである。勿論、複数の整形棒を任意な外径方向へ移動して離間させることで任意形状の異形断面筒体８０Ｂに加工できる。   As described above, according to the present embodiment, the following effects can be obtained. First, according to the modified cross-section cylinder manufacturing apparatus 100 and the modified cross-section cylinder manufacturing method, there are few irregular cross-section cylinders having high design properties, merchantability, and decorativeness with no flaws on the surface. It can be manufactured in one step, and the product can be provided at a low cost. This is because the processing can be performed only by separating the shaping rods 1, 3, 5 arranged inside the cylinder. Of course, the irregular shaped cylindrical body 80B having an arbitrary shape can be processed by moving a plurality of shaping rods in an arbitrary outer diameter direction and separating them.

また、筒体の中間膨出部を押圧手段で強制的に押圧することにより、より正確な形状の製品を製造することができる。   Moreover, a product with a more accurate shape can be manufactured by forcibly pressing the intermediate bulging portion of the cylindrical body with the pressing means.

尚、本発明は、上記実施の形態に限定されるものではない。例えば、円形断面の筒体１０内に別個に挿通される一方の整形棒１と他方の整形棒３，５とを離間する方向へ所定量を相対的に移動させる牽引手段３０，４０は、全ての整形棒１，３，５に配置しても良い。この実施の形態によるときも、同様の作用・効果が発揮される。更に、異形断面筒体は、テーパー筒体ではなくストレートの筒体であっても良い。また、筒体の材質も、鉄板、ステンレス板、アルミ板、チタン板等の各種の材質のものに適用できる。   The present invention is not limited to the above embodiment. For example, all of the traction means 30 and 40 for relatively moving a predetermined amount in the direction of separating one shaping rod 1 and the other shaping rods 3 and 5 that are separately inserted into the cylindrical body 10 having a circular cross section, You may arrange | position to the shaping rod 1,3,5. Even in this embodiment, similar actions and effects are exhibited. Furthermore, the irregular cross-section cylinder may be a straight cylinder instead of a tapered cylinder. Moreover, the material of the cylinder can also be applied to various materials such as an iron plate, a stainless steel plate, an aluminum plate, and a titanium plate.

本発明は、自動二輪車用マフラーに用いる異形断面筒体の製造方法を例に挙げて説明したが、それに限定されるものではなく、様々な製品の筒体に適用可能である。   Although the present invention has been described by taking as an example the method for manufacturing a modified cross-section cylinder used for a muffler for a motorcycle, the present invention is not limited to this and can be applied to cylinders of various products.

本発明の製造方法により加工される異形断面筒体の斜視図である。It is a perspective view of the irregular cross-section cylinder processed by the manufacturing method of the present invention. 本発明の製造方法により加工される各種異形断面筒体の斜視図である。It is a perspective view of various irregular cross-section cylinders processed by the manufacturing method of the present invention. 本発明の製造方法により加工される整形棒の変形例の正面図である。It is a front view of the modification of the shaping stick processed by the manufacturing method of this invention. 本発明の異形断面筒体の製造装置の正面図である。It is a front view of the manufacturing apparatus of the irregular cross-section cylinder of the present invention. 本発明の異形断面筒体の製造装置の側面図である。It is a side view of the manufacturing apparatus of the irregular cross-section cylinder of the present invention. 本発明の異形断面筒体の製造装置の側面図で、図４を左側から見た図である。It is the side view of the manufacturing apparatus of the irregular cross-section cylinder of this invention, and is the figure which looked at FIG. 4 from the left side. 本発明の異形断面筒体の製造装置の要部作用図である。It is a principal part operation | movement figure of the manufacturing apparatus of the irregular cross-section cylinder of this invention. 筒体の加工工程を示す工程図である。It is process drawing which shows the manufacturing process of a cylinder. 異形断面筒体の作用正面図である。It is an effect | action front view of a modified cross-section cylinder.

符号の説明Explanation of symbols

１，３，５，７ 整形棒
１０ 筒体
１０Ａ 三角形の異形断面筒体
１０Ｂ 楕円の異形断面筒体
１０Ｃ 四角形の異形断面筒体
１０Ｄ 五角形の異形断面筒体
１１ 可動片
１３ 接続片
１５，１７ 支持体
１５Ａ，１５Ｂ，１７Ａ，１７Ｂ ガイド筒
１５Ｃ，１５Ｄ，１７Ｃ，１７Ｄ 昇降棒
１８，１９ 可動片
１８Ａ，１９Ａ 接続片
２１，２３ 連接体
２５，２６，２７ 支持体
２５Ａ，２５Ｂ，２６Ａ，２６Ｂ，２７Ａ，２７ ガイド筒
２５Ｃ，２５Ｄ，２６Ｃ，２６Ｄ，２７Ｃ，２ 昇降棒
３１，３３，３５ 押圧体
３０，４０ 牽引手段
５０，６０，７０ 押圧手段
８０ 薄板
８０Ａ 円筒体
８０Ｂ 三角形の異形断面筒体
１００ 異形断面筒体の製造装置
ａ，ｂ，ｃ 膨出部
Ｂ，Ｂ１，Ｂ２ ボルト
Ｆ フレーム体
Ｆ１，Ｆ２ 前後枠
Ｆ３，Ｆ４ 支持枠
ＯＣ１，ＯＣ２，ＯＣ３，ＯＣ４，ＯＣ５ 油圧シリンダ機構
Ｐ１，Ｐ２，Ｐ３ ピストンロッド
Ｐ４，Ｐ５，Ｐ６ ピストンロッド
1, 3, 5, 7 Shaping rod 10 Cylinder 10A Triangular irregular cross-section cylinder 10B Elliptical irregular cross-section cylinder 10C Quadrilateral irregular cross-section cylinder 10D Pentagonal irregular cross-section cylinder 11 Movable piece 13 Connection pieces 15, 17 Support Body 15A, 15B, 17A, 17B Guide cylinder 15C, 15D, 17C, 17D Elevating rod 18, 19 Movable piece 18A, 19A Connection piece 21, 23 Connecting body 25, 26, 27 Support body 25A, 25B, 26A, 26B, 27A , 27 Guide cylinder 25C, 25D, 26C, 26D, 27C, 2 Lifting bar 31, 33, 35 Pressing body 30, 40 Pulling means 50, 60, 70 Pressing means 80 Thin plate 80A Cylindrical body 80B Triangular irregular cross-section cylindrical body 100 Variant Manufacturing equipment for cross-sectional cylinders a, b, c bulging parts B, B1, B2 bolts F frame bodies F1, F2 front and rear frames F3, F4 support Frame OC1, OC2, OC3, OC4, OC5 hydraulic cylinder mechanisms P1, P2, P3 piston rod P4, P5, P6 piston rod

Claims (7)

円形断面の筒体内に一方の整形棒を挿通するとともに他方の整形棒を挿通し、上記一方の整形棒と他方の整形棒を離間する方向に所定量を相対的に移動させ、上記筒体を所定の異形断面に加工することを特徴とする異形断面筒体の製造方法。   Insert one shaping rod into the cylindrical body of the circular cross section and the other shaping rod, move the predetermined shaping rod relatively in the direction separating the one shaping rod and the other shaping rod, A method for producing a modified cross-section cylindrical body characterized by processing into a predetermined irregular cross-section. 上記一方の整形棒に対し、他方の整形棒を複数挿通し、それぞれ異なる方向に相対的に移動させることを特徴とする請求項１記載の異形断面筒体の製造方法。   2. The method of manufacturing a modified cross-section cylindrical body according to claim 1, wherein a plurality of the other shaping rods are inserted into the one shaping rod and relatively moved in different directions. 上記一方の整形棒を固定し、他方の整形棒を離間する方向に移動させるようにしたことを特徴とする請求項１又は２記載の異形断面筒体の製造方法。   3. The method of manufacturing a modified cross-section cylindrical body according to claim 1 or 2, wherein the one shaping rod is fixed and the other shaping rod is moved in a separating direction. 上記筒体の中間膨出部を押圧することを特徴とする請求項１又は２又は３記載の異形断面筒体の製造方法。   4. The method of manufacturing a modified cross-section cylindrical body according to claim 1, wherein an intermediate bulging portion of the cylindrical body is pressed. 円形断面の筒体内に挿通される一方の整形棒と、円形断面の筒体内に別個に挿通される他方の整形棒と、上記他方の整形棒と一方の整形棒とを離間する方向へ所定量を相対的に移動させる牽引手段と、を具備したことを特徴とする異形断面筒体の製造装置。   One shaping rod inserted into the circular cross-section cylinder, the other shaping rod inserted separately into the circular cross-section cylinder, and a predetermined amount in the direction of separating the other shaping rod and one shaping rod An apparatus for manufacturing a modified cross-section cylindrical body, characterized by comprising traction means for relatively moving the cylinder. 上記牽引手段は、整形棒を油圧シリンダ機構で引っ張るようにしたものであることを特徴とする請求項５記載の異形断面筒体の製造装置。   6. The modified cross-section cylinder manufacturing apparatus according to claim 5, wherein the pulling means is configured to pull the shaping rod with a hydraulic cylinder mechanism. 上記一方の整形棒と他方の整形棒との中間部に相対的に離間することにより形成される筒体の膨出部を押圧することにより修正する押圧手段を備えたことを特徴とする請求項５又は６記載の異形断面筒体の製造装置。
The pressure means for correcting by pressing the bulging part of the cylindrical body formed by being relatively spaced apart from the intermediate part of said one shaping rod and the other shaping rod is provided. The manufacturing apparatus of the irregular cross-section cylinder of 5 or 6.
JP2004375611A 2004-12-27 2004-12-27 Method and apparatus for manufacturing cylinder having special cross sectional shape Pending JP2006181584A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112170695A (en) * 2019-07-02 2021-01-05 大众汽车股份公司 Method for producing a frame and/or a housing

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63290618A (en) * 1987-05-21 1988-11-28 Honda Motor Co Ltd Method for forming collecting pipe
JPH11333538A (en) * 1998-05-25 1999-12-07 Ikuno Kinzoku Kk Manufacture of square can

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63290618A (en) * 1987-05-21 1988-11-28 Honda Motor Co Ltd Method for forming collecting pipe
JPH11333538A (en) * 1998-05-25 1999-12-07 Ikuno Kinzoku Kk Manufacture of square can

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112170695A (en) * 2019-07-02 2021-01-05 大众汽车股份公司 Method for producing a frame and/or a housing

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