JP2019072748A - Manufacturing method of catalytic converter - Google Patents

Manufacturing method of catalytic converter Download PDF

Info

Publication number
JP2019072748A
JP2019072748A JP2017201561A JP2017201561A JP2019072748A JP 2019072748 A JP2019072748 A JP 2019072748A JP 2017201561 A JP2017201561 A JP 2017201561A JP 2017201561 A JP2017201561 A JP 2017201561A JP 2019072748 A JP2019072748 A JP 2019072748A
Authority
JP
Japan
Prior art keywords
cylindrical body
catalytic converter
held
clamp member
main body
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.)
Granted
Application number
JP2017201561A
Other languages
Japanese (ja)
Other versions
JP6748992B2 (en
Inventor
力 石野
Tsutomu Ishino
力 石野
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sango Co Ltd
Original Assignee
Sango Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Sango Co Ltd filed Critical Sango Co Ltd
Priority to JP2017201561A priority Critical patent/JP6748992B2/en
Publication of JP2019072748A publication Critical patent/JP2019072748A/en
Application granted granted Critical
Publication of JP6748992B2 publication Critical patent/JP6748992B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Exhaust Gas After Treatment (AREA)
  • Exhaust Gas Treatment By Means Of Catalyst (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)

Abstract

To form at least a tapered part on one end part while being appropriately retained in a cylindrical body without allowing an excessive load to be applied onto a catalytic carrier, in a manufacturing method of a catalytic converter which performs press-fitting of a buffer member and the catalytic carrier into the cylindrical body of a non-circular curve cross-section and performs spinning for at least one end part of the cylinder body.SOLUTION: A manufacturing method of a catalytic converter includes a first process (P1) of retaining a main body part (11) of a cylindrical body (W) of a non-circular curve cross-section by means of clamp members (40, 50), a second process (P2) of press-fitting a buffer member (30) and a catalytic carrier (20) into the main body and a third process (P3) of performing spinning for at least one end part of the cylinder body and forming at least a tapered part (12).SELECTED DRAWING: Figure 5

Description

本発明は、触媒コンバータの製造方法に関し、特に、非円形の曲線断面の筒状体内に緩衝部材及び触媒担体を圧入すると共に、筒状体の端部に対しスピニング加工を行う触媒コンバータの製造方法に係る。   The present invention relates to a method of manufacturing a catalytic converter, and in particular, a method of manufacturing a catalytic converter in which a buffer member and a catalyst carrier are pressed into a cylindrical body having a noncircular curved cross section and a spinning process is performed on the end of the cylindrical body. Pertain to.

内燃機関を搭載する自動車の排気ガス浄化装置である触媒コンバータの製造方法として、楕円形又はレーストラック形状といった非円形の曲線断面の筒状体内に緩衝部材及び触媒担体を圧入すると共に、筒状体の端部に対しスピニング加工を行ない、当該端部をテーパ状に縮径する方法が知られている。例えば、下記の特許文献1には、「ワークの断面形状が楕円またはレーストラック形状であっても、ワークの歩留まりが良くて製造コストが低減でき、形状の自由度が高く、スピニング加工により本体部の両端に所定形状のコーン部を形成できる触媒コンバータの製造方法を提供する」ことを目的とし(特許文献1の段落〔0006〕に記載)、「軸直角方向の断面形状が楕円又はレーストラック形状で管状のワークの少なくとも一端部を開放した状態で該ワークを保持装置により保持しつつ、外周側から該ワークの前記一端部と当接する状態でローラを該ワークに対して相対回転させつつ軸方向に相対移動させるとともにその回転半径を徐々に縮少させる触媒コンバータ容器の製造方法において、前記保持装置は前記ワークにおける前記ローラと当接しない範囲を支持する治具を有し、該治具は軸方向に突出し該ワークの不規則な変形を阻止する突出部を持ち、該治具の内面には軸直角方向の断面形状が楕円又はレーストラック形状をなす支持面が形成されている」製造方法が提案されている(同文献の請求項2に記載)。   As a method of manufacturing a catalytic converter that is an exhaust gas purification device for an automobile equipped with an internal combustion engine, a buffer member and a catalyst carrier are pressed into a cylindrical body having a noncircular curved cross section such as an oval or racetrack shape There is known a method of performing a spinning process on the end portion of the to reduce the diameter of the end portion in a tapered manner. For example, in Patent Document 1 below, "Even if the cross-sectional shape of the workpiece is an ellipse or a racetrack shape, the yield of the workpiece is high, the manufacturing cost can be reduced, the freedom of the shape is high, and the main portion by spinning processing To provide a method for producing a catalytic converter capable of forming a cone portion having a predetermined shape at both ends of the first axis (described in paragraph [0006] of Patent Document 1); In the state where at least one end of the tubular work is held open by the holding device in a state in which at least one end of the work is open, the roller is relatively rotated with respect to the work while in contact with the one end of the work from the outer peripheral side In the method of manufacturing a catalytic converter container, wherein the holding device is moved relative to the It has a jig for supporting the area not in contact with the roller, and the jig has a projection which projects in the axial direction to prevent irregular deformation of the work, and the inner surface of the jig has a cross section in the direction perpendicular to the axis A manufacturing method is proposed in which a support surface having an oval or racetrack shape is formed (described in claim 2 of the same document).

一方、下記の特許文献2には、「従来の触媒コンバータの製造方法では、プレス装置とスピニングマシンとをそれぞれ必要とする。このため、設備費が嵩む上、各装置の設置面積が必要になる。また、プレス装置とスピニングマシンとにおいてワークをそれぞれ取り付け、取外ししなければならない上、ワークをプレス装置からスピニングマシンまで搬送しなければならず、製造能率が低下するという問題があった」と記載され(特許文献2の段落〔0003〕に記載)、これを解決するため、「マシン本体と、このマシン本体に設けられ、触媒担体が保持材を介して圧入された金属性の保持筒を支持し、この保持筒をその軸線を中心として回転駆動する主軸と、上記マシン本体に設けられ、上記主軸によって回転される保持筒の端部外周に押し付けられることによって保持筒の端部を成形加工する成形ロールが取り付けられるロール取付台とを備えた触媒コンバータ用スピニングマシンにおいて、上記マシン本体に、上記主軸と対向し、かつ軸線を上記主軸の軸線とほぼ一致させた状態で配置され、上記主軸に支持された保持筒に、上記保持材が外周に取り付けられた上記触媒担体をその軸線方向に押して圧入する圧入手段を設けた」スピニングマシンが提案されている(同段落〔0004〕に記載)。   On the other hand, in Patent Document 2 below, "the conventional method of manufacturing a catalytic converter requires a pressing device and a spinning machine. Therefore, the equipment cost is increased and the installation area of each device is required. In addition, the work must be attached and removed separately from the press and the spinning machine, and the work must be transported from the press to the spinning machine, resulting in a problem of reduced manufacturing efficiency. " In order to solve this, “the machine main body and the metal holding cylinder provided on this machine main body and in which the catalyst carrier is press-fitted through the holding material are supported (see the paragraph [0003] of Patent Document 2) And a main shaft that rotationally drives the holding cylinder about its axis, and an outer periphery of an end portion of the holding cylinder provided on the machine main body and rotated by the main shaft. In a spinning machine for a catalytic converter comprising a roll mount on which a forming roll for forming and processing an end of a holding cylinder by being attached is attached to the machine main body, the machine main body faces the main spindle, and an axis is an axis of the main spindle. "The spinning machine is provided with a press-in means for pressing in the axial direction of the catalyst carrier with the holding material attached to the outer periphery thereof and press-fitting it in the holding cylinder supported substantially on the axis and supported by the main shaft" It has been proposed (described in the same paragraph [0004]).

更に、下記の特許文献3には、「ワークの非加工部から、該非加工部の中心軸に対して少くとも偏心、傾斜及び捩れの何れか一つの関係にある中心軸を有する最終目標加工部に至るまでに複数の目標加工部を設定し、該複数の目標加工部に基づき複数の加工目標軸を設定し、該複数の加工目標軸のうちの一つと前記ワークの加工対象部の中心軸が略同軸となるように前記ワークを支持し、前記加工対象部の中心軸を前記複数の加工目標軸のうちの各加工目標軸と一致させると共に、各加工目標軸における前記加工対象部の径を変化させるようにスピニング加工を行なって前記加工対象部を成形し、前記最終目標加工部形状に形成することとした」ワークの異径部成形方法が提案されている(特許文献3の段落〔0006〕に記載)。   Furthermore, in the following Patent Document 3, “the final target machined portion having a central axis at least one of eccentricity, inclination and twist with respect to the central axis of the non-machined portion from the non-machined portion of the workpiece” A plurality of target processing parts are set up to the end, a plurality of processing target axes are set based on the plurality of target processing parts, and one of the plurality of processing target axes and the central axis of the processing target part of the workpiece The workpiece is supported such that the axis of the workpiece is substantially coaxial, and the central axis of the processing target portion is matched with each processing target axis among the plurality of processing target axes, and the diameter of the processing target portion in each processing target axis The spinning process is performed to change the shape to form the processing target portion, and the final target processing portion shape is formed. " 0006].

特許第3550647号公報Patent No. 3550647 gazette 特許第4554062号公報Patent No. 4554062 gazette 特許第3390725号公報Patent No. 3390725

上記特許文献1で提案された触媒コンバータの製造方法において、楕円形又はレーストラック形状の筒状体内に緩衝部材及び触媒担体が圧入されると、緩衝部材の反発力によって筒状体の断面短径側が膨らんだ状態となる。このため、当該筒状体を前述の治具に装着してクランプ(把持)する際に、筒状体の軸を中心とする回転方向の位置が定まらず、仮に回転方向の位置決めが不完全な状態のまま筒状体を把持すると、部分的に過大な負荷が付与され、筒状体内の触媒担体が破損するおそれがある。一方、特許文献2が対象とする触媒コンバータは円形断面であり、その軸を中心に触媒コンバータが回転駆動されるので、端部形状は保持筒(筒状体の本体部)と同軸のものに限られ、特許文献3に記載のような、本体部の中心軸に対し偏心、傾斜あるいは捩れの関係にある中心軸を有する端部を形成することはできない。   In the method of manufacturing a catalytic converter proposed in Patent Document 1 above, when the buffer member and the catalyst carrier are pressed into the oval or racetrack-shaped cylindrical body, the cross-sectional short diameter of the cylindrical body due to the repulsive force of the buffer member. It will be in the state where the side swelled. For this reason, when the cylindrical body is attached to the aforementioned jig and clamped (held), the position in the rotational direction about the axis of the cylindrical body is not determined, and the positioning in the rotational direction is temporarily incomplete. When the tubular body is gripped in the state, an excessive load is partially applied, and the catalyst carrier in the tubular body may be damaged. On the other hand, since the catalytic converter targeted by Patent Document 2 has a circular cross section and the catalytic converter is rotationally driven about its axis, the end shape is coaxial with the holding cylinder (the main body of the cylindrical body) It is not possible to form an end portion having a central axis which is eccentric, inclined or twisted with respect to the central axis of the main body as described in Patent Document 3.

そこで、本発明は、非円形の曲線断面の筒状体内に緩衝部材及び触媒担体を圧入すると共に、筒状体の少なくとも一端部に対しスピニング加工を行う触媒コンバータの製造方法において、当該圧入及びスピニング加工によって触媒担体に過大な負荷が付与されることなく適切に筒状体内に保持された状態で、一端部に少なくともテーパ部を形成し得る触媒コンバータの製造方法を提供することを課題とする。   Therefore, the present invention relates to a method of manufacturing a catalytic converter in which the buffer member and the catalyst carrier are pressed into the cylindrical body having a non-circular curved cross section, and at least one end of the cylindrical body is spun. It is an object of the present invention to provide a method of manufacturing a catalytic converter which can form at least a tapered portion at one end in a state where the catalyst carrier is appropriately held in a cylindrical body without being excessively loaded on the catalyst carrier.

上記の課題を達成するため、本発明は、非円形の曲線断面を有する筒状体の本体部内に、緩衝部材及び触媒担体を圧入すると共に、前記筒状体の少なくとも一端部に対しスピニング加工を行う触媒コンバータの製造方法において、前記筒状体の前記本体部をクランプ部材によって保持する第1の工程と、前記クランプ部材によって保持された状態の前記筒状体に対し、前記緩衝部材及び前記触媒担体を前記本体部内に圧入する第2の工程と、前記緩衝部材及び前記触媒担体を前記本体部内に有し、前記クランプ部材によって保持された状態の前記筒状体の少なくとも一端部に対しスピニング加工を行い、前記一端部に少なくともテーパ部を形成する第3の工程とを有するものである。尚、前記一端部に対し、前記テーパ部に連続して円形断面の小径部を形成することとしてもよい。   In order to achieve the above object, the present invention press-fits a buffer member and a catalyst carrier into a main body of a cylindrical body having a non-circular curved cross section, and spins at least one end of the cylindrical body. In the method for manufacturing a catalytic converter, the first step of holding the main body portion of the cylindrical body by a clamp member, and the buffer member and the catalyst with respect to the cylindrical body held by the clamp member. The second step of pressing the carrier into the main body, and the at least one end of the cylindrical body having the buffer member and the catalyst carrier in the main body and held by the clamp member And a third step of forming at least a tapered portion at the one end. The small diameter portion with a circular cross section may be formed continuously to the tapered portion at the one end portion.

更に、前記クランプ部材によって前記筒状体が保持された状態であって、前記スピニング加工によって少なくとも前記テーパ部が形成された状態の前記一端部に対し切断加工を行い、前記一端部の先端を所定形状に形成する第4の工程を有することとしてもよい。   Furthermore, in a state where the cylindrical body is held by the clamp member, cutting is performed on the one end in a state where at least the tapered portion is formed by the spinning, and a tip of the one end is specified. A fourth step of forming into a shape may be included.

上記の触媒コンバータの製造方法において、前記クランプ部材は、前記筒状体の軸芯を含む平面に平行な対向面を有する少なくとも二つの割型を備えたものとし、該二つの割型の前記対向面間に所定の微小間隙を維持した状態で前記筒状体の前記本体部を保持するように構成するとよい。また、前記クランプ部材は、前記二つの割型を相互に近接する方向に付勢する付勢部材を備えたものとし、該付勢部材の付勢力によって前記対向面間に前記微小間隙を維持した状態で前記筒状体の前記本体部を保持することとするとよい。更に、前記二つの割型を前記付勢部材の付勢力に抗して密着させた状態とした後に、前記筒状体の少なくとも一端部に対し前記スピニング加工を行うこととするとよい。   In the method of manufacturing a catalytic converter described above, the clamp member includes at least two split molds having opposing faces parallel to a plane including the axial core of the cylindrical body, and the two split molds are opposed to each other. The main body portion of the cylindrical body may be held while maintaining a predetermined minute gap between the surfaces. Further, the clamp member is provided with a biasing member for biasing the two split molds in a direction in which the two split molds approach each other, and the minute gap is maintained between the opposing surfaces by the biasing force of the biasing member. The main body portion of the tubular body may be held in a state. Furthermore, it is preferable that the spinning process is performed on at least one end portion of the cylindrical body after the two split molds are brought into close contact with each other against the biasing force of the biasing member.

本発明は上述のように構成されているので以下の効果を奏する。即ち、本発明の触媒コンバータの製造方法においては、筒状体の本体部をクランプ部材によって保持する第1の工程と、クランプ部材によって保持された状態の筒状体に対し、緩衝部材及び触媒担体を本体部内に圧入する第2の工程と、緩衝部材及び触媒担体を本体部内に有し、クランプ部材によって保持された状態の筒状体の少なくとも一端部に対しスピニング加工を行い、一端部に少なくともテーパ部を形成する第3の工程とを有するものであるので、非円形の曲線断面の筒状体内に緩衝部材及び触媒担体を適切に圧入して保持することができ、続いて、筒状体の少なくとも一端部に対しスピニング加工を行うことにより、触媒担体に過大な負荷が付与されることなく、容易に触媒コンバータを製造することができる。更に、クランプ部材によって筒状体が保持された状態であって、スピニング加工によって少なくともテーパ部が形成された状態の一端部に対し切断加工を行い、一端部の先端を所定形状に形成する第4の工程を有するものとすれば、筒状体の一端部に対する切断加工を円滑且つ確実に行うことができる。   Since the present invention is configured as described above, the following effects can be obtained. That is, in the method of manufacturing the catalytic converter of the present invention, the buffer member and the catalyst carrier for the first step of holding the main body of the cylindrical body by the clamp member, and the cylindrical body in the state of being held by the clamp member. A second step of press-fitting the main body into the main body, the buffer member and the catalyst carrier in the main body, and spinning at least one end of the cylindrical body held by the clamp member; Since the third step of forming the tapered portion is included, the buffer member and the catalyst carrier can be appropriately press-fitted and held in the cylindrical body having a non-circular curved cross section, and subsequently, the cylindrical body By performing the spinning process on at least one end of the catalyst carrier, the catalyst converter can be easily manufactured without applying an excessive load to the catalyst carrier. Furthermore, in a state in which the cylindrical body is held by the clamp member, cutting is performed on one end in a state in which at least the tapered portion is formed by spinning, and the tip of the one end is formed into a predetermined shape If one of the above processes is included, cutting at one end of the cylindrical body can be performed smoothly and reliably.

上記の触媒コンバータの製造方法において、前記クランプ部材は、筒状体の軸芯を含む平面に平行な対向面を有する少なくとも二つの割型を備えたものとし、該二つの割型の対向面間に所定の微小間隙を維持した状態で筒状体の本体部を保持するように構成すれば、触媒担体に過大な負荷が付与されることなく、非円形の曲線断面の筒状体内に緩衝部材及び触媒担体を適切に圧入することができる。また、二つの割型を相互に近接する方向に付勢する付勢部材を備えたものとし、該付勢部材の付勢力によって対向面間に微小間隙を維持した状態で筒状体の本体部を保持するように構成すれば、筒状体内に圧入された緩衝部材及び触媒担体を適切に保持することができ、筒状体内の触媒担体が破損することはない。更に、二つの割型を付勢部材の付勢力に抗して密着させた状態とした後に、筒状体の少なくとも一端部に対しスピニング加工を行うこととすれば、スピニング加工に耐え得る保持力をもって確実に筒状体を保持することができるので、円滑且つ容易に触媒コンバータを製造することができる。   In the method of manufacturing a catalytic converter as described above, the clamp member is provided with at least two split molds having opposing faces parallel to a plane including the axial center of the cylindrical body, and between the two split molds facing each other. If the main body portion of the cylindrical body is held while maintaining the predetermined minute gap, the buffer member in the non-circular curved cross-section cylindrical body without applying an excessive load to the catalyst carrier And the catalyst support can be injected properly. Further, a biasing member for biasing the two split molds in a direction toward each other is provided, and the main body portion of the cylindrical body is maintained in a state where a minute gap is maintained between the opposing surfaces by the biasing force of the biasing member. If the buffer member and the catalyst carrier pressed into the cylindrical body can be properly held, the catalyst carrier in the cylindrical body will not be broken. Furthermore, if two split molds are brought into close contact against the biasing force of the biasing member, then at least one end of the cylindrical body may be subjected to spinning to achieve a holding power that can withstand spinning. Thus, the cylindrical body can be held reliably, so that the catalytic converter can be manufactured smoothly and easily.

本発明の一実施形態に係る触媒コンバータの製造方法に供されるクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す正面図である。It is a front view which shows the clamp member with which the manufacturing method of the catalyst converter which concerns on one Embodiment of this invention is provided, and the catalyst converter of the state hold | maintained by this clamp member. 本発明の一実施形態に係る触媒コンバータの製造方法に供されるクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す側面図である。It is a side view showing the clamp member with which the manufacturing method of the catalyst converter concerning one embodiment of the present invention is provided, and the catalyst converter of the state where it was held by the clamp member. 本発明の一実施形態に係る触媒コンバータの製造方法に供されるクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す平面図である。It is a top view which shows the clamp member with which the manufacturing method of the catalyst converter concerning one Embodiment of this invention is provided, and the catalyst converter of the state hold | maintained by this clamp member. 本発明の一実施形態に係る触媒コンバータの製造方法に供されるクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す断面図である。It is sectional drawing which shows the clamp member with which the manufacturing method of the catalytic converter which concerns on one Embodiment of this invention is provided, and the catalytic converter of the state hold | maintained by this clamp member. 本発明の一実施形態に係る触媒コンバータの製造方法の工程図である。It is process drawing of the manufacturing method of the catalytic converter which concerns on one Embodiment of this invention. 本発明の一実施形態に係る触媒コンバータの製造方法に供されるクランプ装置及びスピンニング装置を示す正面及び側面図である。It is a front view and a side view showing a clamp device and a spinning device provided in a method of manufacturing a catalytic converter according to an embodiment of the present invention. 本発明の一実施形態に係る触媒コンバータの製造方法におけるワークのクランプ状態を示す正面及び側面図である。It is a front view and a side view showing the clamp state of the work in the manufacturing method of the catalytic converter concerning one embodiment of the present invention. 本発明の一実施形態に係る触媒コンバータの製造方法におけるワークの一端部に対するスピンニング加工を示す正面及び側面図である。It is a front view and a side view showing the spinning processing to the end part of the work in the manufacturing method of the catalytic converter concerning one embodiment of the present invention. 本発明の一実施形態に係る触媒コンバータの製造方法におけるワークの反転作動を示す正面及び側面図である。It is a front and a side view showing the reversal operation of the work in the manufacturing method of the catalytic converter concerning one embodiment of the present invention. 本発明の一実施形態に係る触媒コンバータの製造方法におけるクランプ装置の回転作動を示す正面及び側面図である。It is a front view and a side view showing rotation operation of a clamp device in a manufacturing method of a catalytic converter concerning one embodiment of the present invention. 本発明の一実施形態に係る触媒コンバータの製造方法におけるワークの他端部に対するスピンニング加工を示す正面及び側面図である。It is a front and a side view showing the spinning processing to the other end part of the work in the manufacturing method of the catalytic converter concerning one embodiment of the present invention. 本発明の他の実施形態に係る触媒コンバータの製造方法に供されるクランプ装置及びスピンニング装置を示す正面及び側面図である。It is a front view and a side view showing a clamp device and a spinning device provided in a method of manufacturing a catalytic converter according to another embodiment of the present invention. 本発明の他の実施形態に係る触媒コンバータの製造方法におけるワークのクランプ状態を示す正面及び側面図である。It is a front view and a side view showing a clamped state of a work in a method of manufacturing a catalytic converter according to another embodiment of the present invention. 本発明に供される他の態様のクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す正面図である。It is a front view showing a clamp member of another mode given to the present invention, and a catalytic converter in a state where it is held by the clamp member. 本発明に供される他の態様のクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す側面図である。It is a side view showing a clamp member of another mode given to the present invention, and a catalytic converter in a state where it is held by the clamp member. 本発明に供される更に他の態様のクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す正面図である。FIG. 10 is a front view showing a clamp member according to yet another aspect of the present invention and a catalytic converter in a state of being held by the clamp member. 本発明に供される更に他の態様のクランプ部材、及び該クランプ部材によって保持された状態の触媒コンバータを示す側面図である。FIG. 10 is a side view showing a clamp member according to still another aspect of the present invention, and a catalytic converter in a state of being held by the clamp member.

以下、本発明の望ましい実施形態について図面を参照して説明する。本発明の一実施形態に係る触媒コンバータの製造方法によって製造される最終製品の一例として、触媒コンバータ10を図5の最下段(P5)に示している。この触媒コンバータ10は、非円形の曲線断面を有する筒状体の本体部11と、この両端に一体的に形成されたテーパ部12及び13並びに小径部14及び15を備えており、図4に縦断面を示すように、触媒担体20に緩衝部材たる緩衝マット30が巻回された状態で、本体部11内に圧入されている。尚、図5において、左側の(A)は触媒コンバータ10の正面を示し、右側の(B)はその右側面を示す。   Hereinafter, preferred embodiments of the present invention will be described with reference to the drawings. The catalytic converter 10 is shown in the lowermost stage (P5) of FIG. 5 as an example of the final product produced by the method of producing a catalytic converter according to one embodiment of the present invention. The catalytic converter 10 includes a cylindrical main body 11 having a non-circular curved cross section, tapered portions 12 and 13 integrally formed at both ends, and small diameter portions 14 and 15, as shown in FIG. As shown in the vertical cross section, the buffer mat 30 serving as a buffer member is press-fitted into the main body 11 in a state of being wound around the catalyst carrier 20. In FIG. 5, the left side (A) shows the front of the catalytic converter 10, and the right side (B) shows its right side.

本実施形態において加工対象とするワークWは、図5の最上段(P0)に示すように、楕円形断面のステンレススティール製の筒状体であるが、非円形の曲線断面として、レーストラック形状の断面としてもよい。また、ワークWとしてステンレススティール管に代えて、他の金属管を用いることとしてもよい。尚、筒状体は、素材のワークW、最終製品の触媒コンバータ10、及びその中間加工品における外側ケースを意味し、それらの胴部は楕円形断面を有する同一形状で、各図において本体部11で示す。   The workpiece W to be machined in this embodiment is a stainless steel cylindrical body having an elliptical cross section as shown in the top row (P0) of FIG. 5, but the racetrack shape is a non-circular curved cross section. It may be a cross section of Further, instead of the stainless steel pipe as the work W, another metal pipe may be used. In addition, a cylindrical body means an outer case in a workpiece W as a material, a catalytic converter 10 as a final product, and an intermediately processed product thereof, and their body has the same shape having an elliptical cross section, and a main body in each figure It shows by 11.

本実施形態においては、上記の触媒コンバータを製造するため、図1乃至図4に示すクランプ部材(40、50)が用いられている。このクランプ部材(40、50)は、ワークW(筒状体)の本体部11の軸芯を含む平面に平行な対向面を有する二つの割型、即ち上側クランプ部材40及び下側クランプ部材50を備え、両クランプ部材(40、50)の対向面間に所定の微小間隙(CL)を維持した状態でワークWの本体部11が保持される。図1に示すように、上側クランプ部材40及び下側クランプ部材50を相互に近接する方向に付勢する付勢部材として計8個の圧縮スプリング(代表してSで示す)を備え、各圧縮スプリングSの付勢力によって両クランプ部材(40、50)の対向面間に微小間隙(CL)を維持した状態で本体部11を保持するように構成されている。   In the present embodiment, clamp members (40, 50) shown in FIGS. 1 to 4 are used to manufacture the above-described catalytic converter. The clamp members (40, 50) are two split molds having opposing surfaces parallel to a plane including the axial center of the main body 11 of the work W (cylindrical body), that is, the upper clamp member 40 and the lower clamp member 50. The main body portion 11 of the work W is held in a state in which a predetermined minute gap (CL) is maintained between the facing surfaces of both clamp members (40, 50). As shown in FIG. 1, a total of eight compression springs (representatively indicated by S) are provided as biasing members for biasing the upper clamp member 40 and the lower clamp member 50 in the direction toward each other, each compression The main body portion 11 is configured to be held in a state in which a minute gap (CL) is maintained between the facing surfaces of both clamp members (40, 50) by the biasing force of the spring S.

本実施形態では、上側クランプ部材40及び下側クランプ部材50の側壁部の四箇所に、夫々外方に突出し外側面が開口する有底溝形状の支持部41乃至44並びに支持部51乃至54が一体的に形成されており、それらの間に半円筒外周面40c及び50cが形成されている。支持部41乃至44並びに支持部51乃至54の各溝内に圧縮スプリングSが収容された状態で、各底面を挿通するようにボルト(代表してBで表す)が配設され、各ボルトBにナット(代表してNで表す)が螺合されて、相互に対向する支持部41、51等が締結される。このとき、上側クランプ部材40及び下側クランプ部材50は両者の対向面間に微小間隙(CL)を維持した状態で保持される。例えば、支持部41、51間では、両支持部の底面が対向する状態で、夫々に圧縮スプリングSが収容され、これらを挿通するボルトBにナットNが螺合されて所定位置で保持される。   In the present embodiment, bottomed groove-shaped support portions 41 to 44 and support portions 51 to 54 are respectively projected outward at the four positions of the side wall portions of the upper clamp member 40 and the lower clamp member 50 and open outward. Semi-cylindrical outer peripheral surfaces 40c and 50c are formed between them. With the compression spring S accommodated in the grooves of the support portions 41 to 44 and the support portions 51 to 54, bolts (representatively represented by B) are disposed to insert the bottom surfaces, and each bolt B A nut (representatively represented by N) is screwed to each other to fasten the mutually opposing support portions 41, 51 and the like. At this time, the upper clamp member 40 and the lower clamp member 50 are held in a state in which a minute gap (CL) is maintained between the opposing surfaces of the both. For example, the compression spring S is accommodated between the support portions 41 and 51 in a state where the bottom surfaces of both support portions face each other, and the nut N is screwed into a bolt B passing through them and held at a predetermined position. .

本発明の製造方法においては、図5に示す(P1)乃至(P3)の三工程を基本構成としている。即ち、先ず第1の工程(P1)において、ワークW(筒状体)の本体部11がクランプ部材(40、50)によって、両者の対向面間に所定の微小間隙(CL)が維持された状態で、保持される。次に、第2の工程(P2)において、クランプ部材(40、50)によって保持された状態のワークW(筒状体)に対し、緩衝マット30が巻回された状態の触媒担体20が本体部11内に圧入される。そして、第3の工程(P3)において、緩衝マット30が巻回された状態の触媒担体20を本体部11内に有し、クランプ部材(40、50)によって保持された状態のワークW(筒状体)が、後述のクランプ装置2に装着され、両クランプ部材(40、50)の対向面が密着された状態(CL=0)で保持される。この状態で、ワークW(筒状体)の両端部に対し、後述するようにスピニング加工が行われ、当該両端部にテーパ部12及び13並びに小径部14及び15が形成される。   In the manufacturing method of the present invention, the three steps (P1) to (P3) shown in FIG. That is, first, in the first step (P1), the predetermined minute gap (CL) is maintained between the opposing surfaces of the main body portion 11 of the work W (cylindrical body) by the clamp members (40, 50) In the state, it is held. Next, in the second step (P2), the catalyst carrier 20 in a state in which the buffer mat 30 is wound around the work W (tubular body) in a state of being held by the clamp members (40, 50) It is pressed into the portion 11. Then, in the third step (P3), the catalyst carrier 20 in a state in which the buffer mat 30 is wound is provided in the main body portion 11, and the work W in a state held by the clamp members (40, 50) Is attached to the clamp device 2 described later, and is held in a state where the opposing surfaces of both clamp members (40, 50) are in close contact (CL = 0). In this state, spinning is performed on both ends of the workpiece W (cylindrical body) as described later, and tapered portions 12 and 13 and small diameter portions 14 and 15 are formed on the both ends.

而して、本実施形態によれば、楕円形断面を有する本体部11に触媒担体20及び緩衝マット30が圧入された状態の触媒コンバータ10の両端部に対しスピニング加工が行われ、テーパ部12及び13並びに小径部14及び15が一体的に形成される(図5の(P3)では、各々の先端部は切断前の状態を示している)。尚、テーパ部12及び13並びに小径部14及び15の軸芯は、本体部11(中央部)の軸芯に対して同軸でも非同軸(偏芯、傾斜、捩じれ)でもスピニング加工可能である。   Thus, according to the present embodiment, the spinning process is performed on both ends of the catalytic converter 10 in a state in which the catalyst carrier 20 and the buffer mat 30 are pressed into the main body 11 having an elliptical cross section. And 13 and the small diameter parts 14 and 15 are integrally formed (in FIG. 5 (P3), the tip of each is shown the state before cutting). The axial centers of the tapered portions 12 and 13 and the small diameter portions 14 and 15 can be spun either coaxially or non-coaxially (eccentric, inclined, twisted) with respect to the axial center of the main body portion 11 (central portion).

本実施形態においては、更に、図5の第4の工程(P4)に示すように、クランプ部材(40、50)によってワークW(筒状体)が保持された状態であって、スピニング加工によってテーパ部12及び13並びに小径部14及び15が形成された状態の各先端部に対し、切断加工が行われ(図5の(P3)に切断箇所を破線で示す)、当該各先端部が所定形状に形成される。而して、図5の最下段(P5)に示す触媒コンバータ10が形成され、最終製品となる。   In the present embodiment, as shown in the fourth step (P4) of FIG. 5, the work W (cylindrical body) is held by the clamp members (40, 50), and the process is performed by spinning. A cutting process is performed on each of the tip portions in a state in which the tapered portions 12 and 13 and the small diameter portions 14 and 15 are formed (indicated by a broken line in (P3 of FIG. 5) with broken lines) It is formed in shape. Thus, the catalytic converter 10 shown in the lowermost stage (P5) of FIG. 5 is formed to be a final product.

上記第3の工程(P3)におけるスピニング加工を図6乃至図10を参照して以下に説明する。図6乃至図10の各図において、左側の(A)はスピニング加工装置の正面を示し、右側の(B)はその右側面を示す。本実施形態で用いられるスピニング加工装置は、図6に示すように、加工対象のワークWの一方の端部に対しスピニング加工を行うスピンニング装置1と、クランプ部材(40、50)を把持するクランプ装置2と、ワークWの他方の端部側に配置し、クランプ装置2に対しワークWを着脱するチャック装置(図示せず)が並設されている。そして、駆動制御手段たるコントローラ(図示せず)による制御に応じて、クランプ装置2に対しスピンニング装置1を相対的に変位させてワークWの端部にスピニング加工を行い、テーパ部12及び13並びに小径部14及び15を形成するように構成されている。尚、スピンニング装置1は、X軸(図6の左右方向)に沿って移動可能とされ、例えば三個のローラ(代表してRLで表す)によってワークWの端部にテーパ部12及び13並びに小径部14及び15が形成されるように構成されており、その構造は前掲の特許文献3に記載された装置と同様であるので説明は省略する。   The spinning process in the third step (P3) will be described below with reference to FIGS. In each of FIGS. 6 to 10, (A) on the left shows the front of the spinning apparatus, and (B) on the right shows its right side. As shown in FIG. 6, the spinning apparatus used in the present embodiment grips the spinning apparatus 1 which performs the spinning process on one end of the workpiece W to be processed, and the clamp members (40, 50). A clamp device 2 and a chuck device (not shown) which is disposed on the other end side of the workpiece W and which detaches the workpiece W from the clamp device 2 are juxtaposed. Then, in accordance with control by a controller (not shown) serving as drive control means, the spinning device 1 is displaced relative to the clamp device 2 to perform spinning on the end of the workpiece W, and taper portions 12 and 13 And small diameter portions 14 and 15 are formed. The spinning device 1 is movable along the X axis (the left and right direction in FIG. 6), and for example, the tapered portions 12 and 13 at the end of the work W by three rollers (representatively represented by RL) And the small diameter portions 14 and 15 are formed, and the structure is the same as the device described in the above-mentioned Patent Document 3, and therefore the description thereof is omitted.

本実施形態のクランプ装置2は、図6に示すようにコ字状の保持具6、7を有し、保持具6には上側クランプ部材40が保持され、保持具7には下側クランプ部材50が保持される。両保持具6、7の相互に対向する内周面(図6の(B)に6c、7cで示す)は、クランプ部材(40、50)の半円筒外周面40c、50cに密着する半円筒状に形成されている。保持具6には、例えば油圧駆動のシリンダ9が固定されており、このシリンダ9によって、ロッド8を介して保持具6(ひいては上側クランプ部材40)が昇降駆動されるように構成されており、ワークW等の装着及び取り外し時には、上側クランプ部材40が上昇駆動される(図9に上昇した状態を示す)。更に、図9に示すように、チャック装置(図示せず)によってワークWがその軸芯回りに回転可能に支持されると共に、図10に示すように、回転駆動装置(図示せず)によってクランプ装置2がロッド8の軸芯に垂直な軸回りを回転可能に支持されている。   The clamp device 2 of this embodiment has U-shaped holders 6, 7 as shown in FIG. 6, the upper clamp member 40 is held by the holder 6, and the lower clamp member is held by the holder 7. 50 is held. The mutually opposing inner circumferential surfaces (shown by 6c and 7c in FIG. 6B of the two holders 6 and 7) are in close contact with the semicylindrical outer circumferential surfaces 40c and 50c of the clamp members (40 and 50). It is formed in the shape of a circle. A cylinder 9 driven hydraulically, for example, is fixed to the holder 6, and this cylinder 9 is configured to drive the holder 6 (and thus the upper clamp member 40) up and down via the rod 8, At the time of attachment and detachment of the work W and the like, the upper clamp member 40 is driven to ascend (shown in a raised state in FIG. 9). Further, as shown in FIG. 9, the work W is rotatably supported about its axis by a chuck device (not shown), and is clamped by a rotational drive device (not shown) as shown in FIG. The device 2 is rotatably supported around an axis perpendicular to the axis of the rod 8.

而して、図6に示す状態から保持具6が下降駆動され、圧縮スプリングSの付勢力に抗して上側クランプ部材40が下側クランプ部材50に密着するように駆動されると、図7に示すように、ワークWの本体部11は、上側クランプ部材40と下側クランプ部材50の微小間隙(CL)が消失した状態で強固に保持され、スピニング加工に耐え得る保持力をもって確実に保持される。続いて、図8に示すように、ワークWに対し、各サイクル毎に個々の目標加工部形状を設定し、漸次、所望の形状に近づけていく逐次スピニング加工により一端部を縮径しつつ、本体部11と一体的に、本体部11に対して傾斜したテーパ部12が形成されると共に円形断面の小径部14が形成され、図8の(A)に示す状態となる。そして、クランプ部材(40、50)によって保持された状態のワークWが鉛直軸(図9の紙面に垂直な軸)を中心に略180°回転駆動されると、ワークWは図10に示すように反転した状態となる。そして、図11に示すようにクランプ部材(40、50)によって保持された状態のワークWの他端部(図11の(A)に示す左側端部)にスピニング加工が行なわれ、本体部11に対して傾斜したテーパ部13が形成されると共に円形断面の小径部15が形成される。   When the holder 6 is driven downward from the state shown in FIG. 6 and the upper clamp member 40 is brought into close contact with the lower clamp member 50 against the biasing force of the compression spring S, as shown in FIG. As shown in FIG. 4, the main body 11 of the work W is firmly held in a state where the minute gap (CL) between the upper clamp member 40 and the lower clamp member 50 disappears, and held securely with a holding force that can withstand spinning. Be done. Subsequently, as shown in FIG. 8, with respect to the workpiece W, an individual target machined shape is set for each cycle, and while gradually reducing the diameter of one end by successive spinning closer to the desired shape, While forming the taper part 12 inclined with respect to the main-body part 11 integrally with the main-body part 11, the small diameter part 14 of a circular cross section is formed, and it will be in the state shown to (A) of FIG. Then, when the workpiece W held by the clamp members (40, 50) is driven to rotate approximately 180 ° about the vertical axis (axis perpendicular to the sheet of FIG. 9), the workpiece W is shown in FIG. It is in the inverted state. Then, as shown in FIG. 11, a spinning process is performed on the other end (the left end shown in FIG. 11A) of the work W held by the clamp members (40, 50). The tapered portion 13 is formed to be inclined with respect to, and the small diameter portion 15 having a circular cross section is formed.

更に、上記スピニング加工後の端部に対し、レーザ加工等の任意の切除手段(図示せず)によってトリム処理が行なわれ、小径部14及び15の先端部が切除されると、図1及び図3に示すように、小径部14及び15は夫々軸芯に垂直な開口端面を有する最終形状となる。この後、クランプ部材(40、50)による本体部11の保持状態が解除され、図5の最下段(P5)に示す加工後の触媒コンバータ10(製品)が取り出される。尚、各端部に対するスピニング加工後に、個々に上記トリム処理を行なうこととしてもよいが、本実施形態においては、ワークW(筒状体)がクランプ部材(40、50)によって保持された状態に維持されているので、両端部のスピニング加工後にトリム処理を行なうこととしても、小径部14及び15の先端部を正確且つ容易に形成することができる。   Furthermore, the end after the above-mentioned spinning is trimmed by an optional cutting means (not shown) such as laser processing, and when the tip of the small diameter parts 14 and 15 is cut off, FIGS. As shown in FIG. 3, each of the small diameter portions 14 and 15 has a final shape having an open end face perpendicular to the axis. Thereafter, the holding state of the main body portion 11 by the clamp members (40, 50) is released, and the processed catalytic converter 10 (product) shown in the lowermost stage (P5) of FIG. 5 is taken out. The above trimming process may be individually performed after the spinning process for each end, but in the present embodiment, the workpiece W (cylindrical body) is held by the clamp members (40, 50). Since it is maintained, the tips of the small diameter parts 14 and 15 can be formed accurately and easily even if the trimming process is performed after the spinning process of the both ends.

以上のように、本実施形態によればワークWの両端部に対するスピニング加工によるテーパ部12、13及び小径部14、15の形成を一工程中で連続して行なうことができるので、両端部に対する個別加工に比べ、加工時間を大幅に短縮することができる。更に、図5の(P4)に示すように、クランプ部材(40、50)に保持された状態で、スピニング加工後の端部に対しトリム処理を行ない、最終形状の小径部14、15を形成することとすれば、切除時間を短縮することができるだけでなく、正確且つ円滑に切除加工を行うことができる。   As described above, according to the present embodiment, the tapered portions 12 and 13 and the small diameter portions 14 and 15 can be continuously formed in the one process by spinning on both ends of the work W. Processing time can be significantly reduced compared to individual processing. Furthermore, as shown in (P4) of FIG. 5, while being held by the clamp members (40, 50), the end after spinning is trimmed to form the small-diameter portions 14, 15 of the final shape. If this is done, not only the ablation time can be shortened, but also ablation can be performed accurately and smoothly.

図12及び図13は本発明の他の実施形態に係る製造方法を示すもので、図9に示すようにワークWを回転させる必要がない場合、例えば、小径部14(及びテーパ部12)と小径部15(及びテーパ部13)の軸芯が同一面上にある場合には、クランプ部材(40x、50x)のように簡略化すると共に、クランプ装置2の保持具(6x、7x)を図12に示す共通形状とすれば、安価に構成することができる。尚、その他の構成については、前述の実施形態と実質的に同じ部材には同じ符号を付して説明を省略する。   12 and 13 show a manufacturing method according to another embodiment of the present invention, and when there is no need to rotate the work W as shown in FIG. 9, for example, with the small diameter portion 14 (and the taper portion 12) When the axis of the small diameter part 15 (and the taper part 13) is on the same plane, it is simplified as a clamp member (40x, 50x) and the holder (6x, 7x) of the clamp device 2 is shown. The common shape shown in 12 can be configured inexpensively. In addition, about another structure, the same code | symbol is attached | subjected to the member substantially the same as above-mentioned embodiment, and description is abbreviate | omitted.

また、図14及び図15はクランプ部材の他の態様を示すもので、ワークWの本体部11を適切に保持し得る形状であれば、クランプ部材(40y、50y)のように形成することとしてもよい。更に、図16及び図17はクランプ部材の更に他の態様を示すもので、クランプ部材(40z、50z)のように形成し、これらをボルトBの手動操作(ボルトBをその先端部を中心に傾動操作)による着脱可能な構成とすることもできる。尚、図14乃至図17におけるその他の構成については、前述の実施形態と実質的に同じ部材には同じ符号を付して説明を省略する。   FIGS. 14 and 15 show other embodiments of the clamp member, which can be formed as clamp members (40y, 50y) as long as the main body portion 11 of the workpiece W can be properly held. It is also good. Furthermore, FIGS. 16 and 17 show still another aspect of the clamp member, which is formed like the clamp members (40z, 50z), and these are manually operated of the bolt B (the bolt B is centered on its tip) It is also possible to have a removable configuration by tilting operation). In addition, about the other structure in FIG. 14 thru | or FIG. 17, the same code | symbol is attached | subjected to the substantially same member as above-mentioned embodiment, and description is abbreviate | omitted.

上記何れの実施形態においても、適宜自動化技術を組み合わせることが可能である。例えば、クランプ部材の脱着や、クランプ部材を把持した状態での工程間搬送等に、ロボット装置を利用することができる。その際には、クランプ部材に圧力センサや加速度センサ等の各種センサを装着しておけば、それらの検出値を自動化技術に用いることができ、加工工程にフィードバックすることもできる。尚、本体部の軸芯に対して偏芯・傾斜・捩れの軸芯を有する小径部及びテーパ部を形成するスピニング加工工法として、特許第5495496号に記載の方法を用いることとしてもよい。   In any of the above embodiments, it is possible to appropriately combine automation techniques. For example, the robot apparatus can be used for attaching / detaching the clamp member, transporting between processes in a state in which the clamp member is held, and the like. At that time, if various sensors such as a pressure sensor and an acceleration sensor are attached to the clamp member, detected values thereof can be used for automation technology, and can be fed back to the processing process. The method described in Japanese Patent No. 5495496 may be used as a spinning process for forming a small diameter portion having an eccentric, inclined, and twisted axis with respect to the axis of the main body portion and a tapered portion.

1 スピンニング装置
2 クランプ装置
6、6x 保持具
7、7x 保持具
8 ロッド
9 シリンダ
10 触媒コンバータ
11 本体部
12、13 テーパ部
14、15 小径部
20 触媒担体
30 緩衝マット(緩衝部材)
40、40x、40y、40z 上側クランプ部材(クランプ部材)
41、42、43、44 支持部
50、50x、50y、50z 下側クランプ部材(クランプ部材)
51、52、53、54 支持部
B ボルト
N ナット
S 圧縮スプリング(付勢部材)
W ワーク(筒状体)
DESCRIPTION OF SYMBOLS 1 Spinning apparatus 2 Clamp apparatus 6, 6x Holder 7, 7x Holder 8 Rod 9 Cylinder 10 Catalytic converter 11 Body part 12, 13 Tapered part 14, 15 Small diameter part 20 Catalyst carrier 30 Buffer mat (buffer member)
40, 40x, 40y, 40z Upper clamp member (clamp member)
41, 42, 43, 44 Support portion 50, 50x, 50y, 50z Lower clamp member (clamp member)
51, 52, 53, 54 Support part B Bolt N Nut S Compression spring (biasing member)
W work (cylindrical body)

Claims (5)

非円形の曲線断面を有する筒状体の本体部内に、緩衝部材及び触媒担体を圧入すると共に、前記筒状体の少なくとも一端部に対しスピニング加工を行う触媒コンバータの製造方法であって、
前記筒状体の前記本体部をクランプ部材によって保持する第1の工程と、
前記クランプ部材によって保持された状態の前記筒状体に対し、前記緩衝部材及び前記触媒担体を前記本体部内に圧入する第2の工程と、
前記緩衝部材及び前記触媒担体を前記本体部内に有し、前記クランプ部材によって保持された状態の前記筒状体の少なくとも一端部に対しスピニング加工を行い、前記一端部に少なくともテーパ部を形成する第3の工程とを有することを特徴とする触媒コンバータの製造方法。
A method of manufacturing a catalytic converter, wherein a buffer member and a catalyst carrier are pressed into a body portion of a cylindrical body having a non-circular curved cross section, and at least one end of the cylindrical body is spun.
A first step of holding the main body portion of the cylindrical body by a clamp member;
A second step of pressing the buffer member and the catalyst carrier into the main body with respect to the tubular body held by the clamp member;
The buffer member and the catalyst carrier are contained in the main body portion, and at least one end of the cylindrical body held by the clamp member is subjected to a spinning process to form at least a tapered portion at the one end. A method of manufacturing a catalytic converter, comprising the steps of:
前記クランプ部材によって前記筒状体が保持された状態であって、前記スピニング加工によって少なくとも前記テーパ部が形成された状態の前記一端部に対し切断加工を行い、前記一端部の先端を所定形状に形成する第4の工程を有することを特徴とする請求項1記載の触媒コンバータの製造方法。 The one end portion in a state in which the cylindrical body is held by the clamp member and at least the tapered portion is formed by the spinning process is cut and the tip of the one end portion has a predetermined shape A method according to claim 1, comprising the fourth step of forming. 前記クランプ部材は、
前記筒状体の軸芯を含む平面に平行な対向面を有する少なくとも二つの割型を備え、
該二つの割型の前記対向面間に所定の微小間隙を維持した状態で前記筒状体の前記本体部を保持することを特徴とする請求項1又は2記載の触媒コンバータの製造方法。
The clamp member is
At least two split molds having opposing surfaces parallel to a plane including the axis of the cylindrical body,
The method according to claim 1 or 2, wherein the main body of the cylindrical body is held in a state where a predetermined minute gap is maintained between the facing surfaces of the two split molds.
前記クランプ部材は、
前記二つの割型を相互に近接する方向に付勢する付勢部材を備え、
該付勢部材の付勢力によって前記対向面間に前記微小間隙を維持した状態で前記筒状体の前記本体部を保持することを特徴とする請求項3記載の触媒コンバータの製造方法。
The clamp member is
And a biasing member for biasing the two molds in a direction toward each other,
The method according to claim 3, wherein the main body portion of the cylindrical body is held in a state where the minute gap is maintained between the facing surfaces by the biasing force of the biasing member.
前記二つの割型を前記付勢部材の付勢力に抗して密着させた状態とした後に、前記筒状体の少なくとも一端部に対し前記スピニング加工を行うことを特徴とする請求項4記載の触媒コンバータの製造方法。 5. The spinning process according to claim 4, wherein at least one end of the cylindrical body is subjected to the spinning process after the two split molds are brought into close contact with each other against the biasing force of the biasing member. Method of manufacturing a catalytic converter.
JP2017201561A 2017-10-18 2017-10-18 Method of manufacturing catalytic converter Active JP6748992B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2017201561A JP6748992B2 (en) 2017-10-18 2017-10-18 Method of manufacturing catalytic converter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2017201561A JP6748992B2 (en) 2017-10-18 2017-10-18 Method of manufacturing catalytic converter

Publications (2)

Publication Number Publication Date
JP2019072748A true JP2019072748A (en) 2019-05-16
JP6748992B2 JP6748992B2 (en) 2020-09-02

Family

ID=66544603

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2017201561A Active JP6748992B2 (en) 2017-10-18 2017-10-18 Method of manufacturing catalytic converter

Country Status (1)

Country Link
JP (1) JP6748992B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115488638A (en) * 2022-09-14 2022-12-20 陕西飞机工业有限责任公司 Processing method and processing device for waist-shaped deep-tube part
KR102572131B1 (en) * 2022-12-16 2023-08-29 주식회사 유한이엔지 Spinning processing device for catalytic converter manufacturing

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2022244449A1 (en) * 2021-05-19 2022-11-24 株式会社三五 Spinning method

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000317533A (en) * 1999-03-09 2000-11-21 Toyota Motor Corp Catalyst converter container, and its manufacture
JP2001286955A (en) * 2000-04-11 2001-10-16 Sakamoto Industry Co Ltd Method and apparatus for forming tube
JP2002178045A (en) * 2000-12-19 2002-06-25 Sakamoto Industry Co Ltd Spinning machine for catalyst converter
JP3390725B2 (en) * 1999-05-10 2003-03-31 株式会社三五 Method and apparatus for forming work of different diameter
JP2003326426A (en) * 2002-05-07 2003-11-18 Sakamoto Industry Co Ltd Machining device for pipe end

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2000317533A (en) * 1999-03-09 2000-11-21 Toyota Motor Corp Catalyst converter container, and its manufacture
JP3390725B2 (en) * 1999-05-10 2003-03-31 株式会社三五 Method and apparatus for forming work of different diameter
JP2001286955A (en) * 2000-04-11 2001-10-16 Sakamoto Industry Co Ltd Method and apparatus for forming tube
JP2002178045A (en) * 2000-12-19 2002-06-25 Sakamoto Industry Co Ltd Spinning machine for catalyst converter
JP2003326426A (en) * 2002-05-07 2003-11-18 Sakamoto Industry Co Ltd Machining device for pipe end

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115488638A (en) * 2022-09-14 2022-12-20 陕西飞机工业有限责任公司 Processing method and processing device for waist-shaped deep-tube part
KR102572131B1 (en) * 2022-12-16 2023-08-29 주식회사 유한이엔지 Spinning processing device for catalytic converter manufacturing

Also Published As

Publication number Publication date
JP6748992B2 (en) 2020-09-02

Similar Documents

Publication Publication Date Title
JP2019072748A (en) Manufacturing method of catalytic converter
CN110312579B (en) Method and apparatus for spin forming
KR100973178B1 (en) Method and forming machine for manufacturing a product having various diameters
CN106141706B (en) The elongated irregular pipe fitting processing clamp device of one kind and its processing method
JP2005525937A5 (en)
US9745855B2 (en) Linear friction welding apparatus and method
JP2008213080A (en) Thin-walled cylinder retaining tool and machining method for thin-walled cylinder
EP2700472A1 (en) Method for processing both end faces of round bar
KR101195384B1 (en) Method and device for producing tubular workpieces out of a punched hollow block
CN109822123A (en) A kind of thin-walled cylindrical workpiece turning clamping method, fixture and processing unit (plant)
JP5577166B2 (en) Machine Tools
JPH08229613A (en) Method for correcting roundness of pipe and device therefor
JP2000263161A (en) Method and device for spinning
CN102357825A (en) Clamping device for processing slender axle top hole
JP4370089B2 (en) Diameter expansion method and apparatus for expanding pipe member
JP3550647B2 (en) Catalytic converter container and method of manufacturing the same
CN210703417U (en) Camshaft static pressure combined system
JP4656533B2 (en) Manufacturing method of fluid processing apparatus with built-in honeycomb structure
CN211614355U (en) Auxiliary clamp and lathe with same
JP2002239657A (en) Spinning method for tube
CN109500453B (en) Cycloidal gear machining clamp
JP4554062B2 (en) Spinning machine for catalytic converter
JP5604139B2 (en) Manufacturing method of purification equipment for automobile
JP2004202531A (en) Spinning device
CN217122459U (en) Thin-wall part machining clamping and positioning tool

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20190717

A977 Report on retrieval

Free format text: JAPANESE INTERMEDIATE CODE: A971007

Effective date: 20200421

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20200511

A521 Request for written amendment filed

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20200609

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20200730

RD04 Notification of resignation of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7424

Effective date: 20200730

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20200730

R150 Certificate of patent or registration of utility model

Ref document number: 6748992

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R150

R250 Receipt of annual fees

Free format text: JAPANESE INTERMEDIATE CODE: R250