JP2009050896A - Welding method and welding jig - Google Patents

Welding method and welding jig Download PDF

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JP2009050896A
JP2009050896A JP2007220745A JP2007220745A JP2009050896A JP 2009050896 A JP2009050896 A JP 2009050896A JP 2007220745 A JP2007220745 A JP 2007220745A JP 2007220745 A JP2007220745 A JP 2007220745A JP 2009050896 A JP2009050896 A JP 2009050896A
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jig
welding
diameter
end portion
cylindrical member
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JP5232423B2 (en
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Tetsuya Fujimoto
哲哉 藤本
Masami Matsubara
正己 松原
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JATCO Ltd
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JATCO Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a high precision welding method especially for welding a cylindrical member to a plate member, and welding jig therefor. <P>SOLUTION: When welding an internal gear 1 consisting of a plate section 3 and a gear section 2, welding work is carried out by placing a tapered collet 5 to a tapered seat 14, applying a force from the inside of the gear section 2 to outward in the radial direction, expanding the diameter of an edge section opposite to an edge section to be welded in the axial direction so as to become larger than that of the edge section to be welded. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は溶接方法および溶接治具に関するものであり、特に筒状部材と板状部材とを溶接するための溶接方法および溶接治具に関するものである。   The present invention relates to a welding method and a welding jig, and particularly to a welding method and a welding jig for welding a cylindrical member and a plate-like member.

従来、ダンパーとフランジとを溶接する場合には、溶接部においてフランジの内壁側から押さえ金具などの治具によってダンパーを押圧して、溶接を行うことで、ひずみを少なくして溶接を正確に行うものが特許文献１に開示されている。
特開昭６４−５６８８号公報 Conventionally, when welding a damper and a flange, welding is performed accurately by reducing the distortion by pressing the damper from the inner wall side of the flange with a jig such as a press fitting at the welded portion. This is disclosed in Patent Document 1.
Japanese Patent Application Laid-Open No. 64-5688

しかし、治具を外した後は、溶接を行った箇所と溶接を行っていない箇所においては、変形量（スプリングバック量）が異なり、上記発明においては、治具を外した後の変形によって、製品の精度が悪くなるといった問題点がある。   However, after removing the jig, the amount of deformation (spring back amount) differs between the place where welding was performed and the place where welding was not performed, and in the above invention, by deformation after removing the jig, There is a problem that the accuracy of the product deteriorates.

本発明はこのような問題点を解決するために発明されたもので、精度の良い製品を製造することを目的とする。   The present invention was invented to solve such problems, and an object of the present invention is to produce a highly accurate product.

本発明は、筒状部材の端部に板状部材を溶接する溶接方法において、筒状部材の径方向外側に向けて筒状部材に付勢力を与えて、筒状部材の板状部材が溶接される側の第１端部に対して、軸方向反対側の端部である第２端部の径を、第１端部の径よりも拡径させて、溶接する。   The present invention relates to a welding method in which a plate-like member is welded to an end portion of a cylindrical member. The diameter of the second end, which is the end portion on the opposite side in the axial direction, is increased with respect to the first end portion on the side to be welded so as to be larger than the diameter of the first end portion.

本発明によると、溶接後のスプリングバック量を考慮して、筒状部材と板状部材とを溶接する第１端部から、軸方向において第１端部とは反対側の第２端部側にかけて、筒状部材を拡径させて溶接を行うので、溶接後のスプリングバック量に差違による製品の精度悪化を抑制し、精度の良い製品を製造することができる。   According to the present invention, in consideration of the amount of spring back after welding, from the first end portion where the tubular member and the plate-like member are welded, the second end portion side opposite to the first end portion in the axial direction. Since the cylindrical member is expanded and welding is performed, the accuracy deterioration of the product due to the difference in the amount of spring back after welding is suppressed, and a product with high accuracy can be manufactured.

本発明の実施形態の構成を図１、図２を用いて説明する。図１は、車両に変速機に使用されたインターナルギヤの一部を示す概略断面図である。図２は、溶接を行う前のインターナルギヤの断面図である。この実施形態では、車両の変速機に用いられるインターナルギヤについての製造方法について説明するが、これに限られることはない。   The configuration of the embodiment of the present invention will be described with reference to FIGS. FIG. 1 is a schematic cross-sectional view showing a part of an internal gear used for a transmission in a vehicle. FIG. 2 is a cross-sectional view of the internal gear before welding. In this embodiment, a manufacturing method for an internal gear used in a transmission of a vehicle will be described, but the present invention is not limited to this.

インターナルギヤ１は、内歯２ａを有するリング状のギヤ部（筒状部材）２と、プレート部（板状部材）３と、を備える。なお、プレート部３は突起部３ａを備え、ギヤ部２とプレート部３とは突起部３ａに大電流を流すことで溶接される。   The internal gear 1 includes a ring-shaped gear portion (cylindrical member) 2 having internal teeth 2 a and a plate portion (plate-shaped member) 3. In addition, the plate part 3 is provided with the projection part 3a, and the gear part 2 and the plate part 3 are welded by flowing a large current through the projection part 3a.

車両においては、クラッチ６の締結、開放状態を切り替えることで、エンジンなどによって発生するトルクが、サンギヤ４、ピニオンギヤ５、インターナルギヤ１の一部、または全部を介して車輪に伝達され、変速機における変速が実行される。   In the vehicle, the torque generated by the engine or the like is transmitted to the wheels via part or all of the sun gear 4, the pinion gear 5, and the internal gear 1 by switching the engagement and disengagement state of the clutch 6. Shifting in is performed.

次に、インターナルギヤ１を製造装置について、図３、図４を用いて説明する。図３はプロジェクション溶接機の構成図であり、図４は、プロジェクション溶接機で使用する溶接治具の構成図である。なお、図３、図４においては、プロジェクション溶接機の一部、インターナルギヤのついて断面図を示す。   Next, an internal gear 1 manufacturing apparatus will be described with reference to FIGS. FIG. 3 is a configuration diagram of a projection welder, and FIG. 4 is a configuration diagram of a welding jig used in the projection welder. 3 and 4 are sectional views of a part of the projection welder and the internal gear.

プロジェクション溶接機１０は、インターナルギヤ１を支持する下電極１１と、鉛直方向へ移動し、下電極１１との間でインターナルギヤ１に電流を流す上電極１２と、を備える。また、溶接を行う際に使用する溶接治具１３を備える。   The projection welder 10 includes a lower electrode 11 that supports the internal gear 1, and an upper electrode 12 that moves in the vertical direction and flows current to the internal gear 1 between the lower electrode 11. Moreover, the welding jig | tool 13 used when welding is provided.

溶接時には、下電極１１と上電極１２との間で、インターナルギヤ１のプレート部３とギヤ部２とを加圧して、大電流を流すことで、突起部３ａを介してプレート部３とギヤ部２とを溶接する。   At the time of welding, the plate portion 3 and the gear portion 2 of the internal gear 1 are pressurized between the lower electrode 11 and the upper electrode 12 to flow a large current, so that the plate portion 3 and the The gear part 2 is welded.

溶接治具１３は、下電極１１に連結する台座（第１治具）１４と、台座１４とインターナルギヤ１との間に設けるコレット（第２治具）１５と、コレット１５の上端の一部と当接し、コレット１５を上端から鉛直方向下向きに押さえる押さえ板１６と、押さえ板１６を貫通して台座１４に螺合し、押さえ板１６の鉛直方向の位置を調整する締め付けネジ１７と、を備える（押さえ板１６と締め付けネジ１７が押し圧治具を構成する）。   The welding jig 13 includes a pedestal (first jig) 14 connected to the lower electrode 11, a collet (second jig) 15 provided between the pedestal 14 and the internal gear 1, and an upper end of the collet 15. A pressing plate 16 that abuts the upper portion and presses the collet 15 downward in the vertical direction from the upper end; a tightening screw 17 that passes through the pressing plate 16 and is screwed to the pedestal 14 to adjust the vertical position of the pressing plate 16; (The pressing plate 16 and the fastening screw 17 constitute a pressing pressure jig).

台座１４は、インターナルギヤ１のギヤ部２の内径よりも小さい略円形形状をしており、ギヤ部２と向かい合う外周壁１４ａは鉛直方向下向きに拡径するテーパ形状である。   The pedestal 14 has a substantially circular shape smaller than the inner diameter of the gear portion 2 of the internal gear 1, and the outer peripheral wall 14 a facing the gear portion 2 has a tapered shape that expands downward in the vertical direction.

ここで、コレット１５について図５、図６をさらに用いて説明する。図５はコレット１５の上方斜視図である。図６はコレット１５の概略断面図である。   Here, the collet 15 will be described with further reference to FIGS. FIG. 5 is an upper perspective view of the collet 15. FIG. 6 is a schematic sectional view of the collet 15.

コレット１５は、略円環形状をしており、外周壁１５ａ、および内周壁１５ｂが鉛直方向の上側の端部（第３端部）から下側の端部（第４端部）にかけて、つまり鉛直方向下向きに拡径するテーパ形状である。コレット１５の内周壁１５ｂは、台座１４の外周壁１４ａと摺接し、コレット１５の外周壁１５ａは、ギヤ部２の内歯２ａの先端部と摺接する。また、コレット１５は、全周において、上下方向から交互に等間隔で設けられるスリット１８を備える。スリット１８を複数設けることで、押さえ板１６によって鉛直方向下向きに加圧された場合に、台座１４の外周壁１４ａに沿って、コレット１５は変形し、径方向に広がる。これによって、外周壁１５ａと当接するギヤ部２の径が広がる。   The collet 15 has a substantially annular shape, and the outer peripheral wall 15a and the inner peripheral wall 15b extend from the upper end (third end) in the vertical direction to the lower end (fourth end), that is, The taper shape expands in the vertical direction downward. The inner peripheral wall 15 b of the collet 15 is in sliding contact with the outer peripheral wall 14 a of the pedestal 14, and the outer peripheral wall 15 a of the collet 15 is in sliding contact with the distal end portion of the inner teeth 2 a of the gear portion 2. Further, the collet 15 includes slits 18 provided alternately at equal intervals from the top and bottom directions on the entire circumference. By providing a plurality of slits 18, the collet 15 is deformed and spreads in the radial direction along the outer peripheral wall 14 a of the pedestal 14 when pressed vertically by the pressing plate 16. Thereby, the diameter of the gear part 2 contact | abutted with the outer peripheral wall 15a spreads.

押さえ板１６は、略円形形状であり、インターナルギヤ１のプレート部３の内周壁と当接する箇所に押さえ板１６の外周に沿って設けられる絶縁部１９を備える。押さえ板１６は、締め付けネジ１７によって鉛直方向の位置を調整可能であり、締め付けネジ１７によって押さえ板１６の鉛直方向の位置が変化すると、それに伴ってコレット１５の鉛直方向の位置は台座１４に対して変化する。つまり、締め付けネジ１７によって押さえ板１６が鉛直方向下向きに移動すると、それに伴ってコレット１５も鉛直方向下向きに移動し、コレット１５は台座１４の外周壁１４ａに沿って、径方向に広がり、外周壁１５ａと摺接するギヤ部２を広げる。   The pressing plate 16 has a substantially circular shape, and includes an insulating portion 19 provided along the outer periphery of the pressing plate 16 at a location where the pressing plate 16 contacts the inner peripheral wall of the plate portion 3 of the internal gear 1. The vertical position of the pressing plate 16 can be adjusted by a tightening screw 17, and when the vertical position of the pressing plate 16 is changed by the tightening screw 17, the vertical position of the collet 15 is accordingly relative to the base 14. Change. That is, when the holding plate 16 is moved downward in the vertical direction by the tightening screw 17, the collet 15 is also moved downward in the vertical direction, and the collet 15 extends in the radial direction along the outer peripheral wall 14a of the base 14, and the outer peripheral wall The gear part 2 in sliding contact with 15a is expanded.

なお、図４においては、押さえ板１６が台座１４に当接している状態を示すが、押さえ板１６が台座１４に当接しない位置で固定され、溶接を行ってもよい。   Although FIG. 4 shows a state where the pressing plate 16 is in contact with the pedestal 14, the pressing plate 16 may be fixed at a position where it does not contact the pedestal 14 and welding may be performed.

台座１４とコレット１５のテーパ形状（テーパ角）は、予め実験などによって設定され、溶接後にインターナルギヤ１が所望する形状となるように設定される。テーパ角は、インターナルギヤ１の剛性が小さいほど大きくする。ここで、剛性が小さいとは、例えば、インターナルギヤ１の径が大きい、厚みが小さい、インターナルギヤ１の材料の弾性率が小さい、などである。   The taper shape (taper angle) of the base 14 and the collet 15 is set in advance by experiments or the like, and is set so that the internal gear 1 has a desired shape after welding. The taper angle is increased as the rigidity of the internal gear 1 is decreased. Here, the low rigidity means that the diameter of the internal gear 1 is large, the thickness is small, the elastic modulus of the material of the internal gear 1 is small, and the like.

次にこの実施形態におけるインターナルギヤ１の製造方法について、図７の製造フローチャートを用いて説明する。   Next, the manufacturing method of the internal gear 1 in this embodiment is demonstrated using the manufacturing flowchart of FIG.

ステップＳ１００では、ギヤ部２とプレート部３を溶接治具１３に配置する。   In step S <b> 100, the gear portion 2 and the plate portion 3 are disposed on the welding jig 13.

ステップＳ１０１では、締め付けネジ１７によって、コレット１５を鉛直方向下向き（ギヤ部２の軸方向下向き）に押し下げて、コレット１５の鉛直方向の位置を調整する。これによって、コレット１５が台座１４の外周壁１４ａに沿って拡径し、ギヤ部２には、コレット１５によって径方向外向きの力がかかり、ギヤ部２の平面度と真円度が矯正され、プレート部３と溶接を行う端部（第１端部）から、軸方向における反対側の端部（第２端部）にかけて、径方向外側に拡径する。   In step S <b> 101, the collet 15 is pushed down vertically (downward in the axial direction of the gear portion 2) by the tightening screw 17 to adjust the position of the collet 15 in the vertical direction. As a result, the collet 15 expands in diameter along the outer peripheral wall 14a of the pedestal 14, and a radial outward force is applied to the gear portion 2 by the collet 15, and the flatness and roundness of the gear portion 2 are corrected. From the end portion (first end portion) where the plate portion 3 is welded to the opposite end portion (second end portion) in the axial direction, the diameter is increased radially outward.

ステップＳ１０２では、上電極１２を下降させて、上電極１２をプレート部３に当接させて、さらに所定の圧力によってプレート部３とギヤ部２とを加圧する。   In step S102, the upper electrode 12 is lowered, the upper electrode 12 is brought into contact with the plate portion 3, and the plate portion 3 and the gear portion 2 are further pressurized with a predetermined pressure.

ステップＳ１０３では、上電極１２と下電極１１との間で所定の電流を流し、ギヤ部２と当接するプレート部３の突起部３ａに電流を集中して流して、溶接を行う。   In step S103, welding is performed by flowing a predetermined current between the upper electrode 12 and the lower electrode 11 and concentrating the current on the protrusion 3a of the plate portion 3 in contact with the gear portion 2.

ステップＳ１０４では、上電極１２を上昇させ、インターナルギヤ１を取り出す。   In step S104, the upper electrode 12 is raised and the internal gear 1 is taken out.

インターナルギヤ１を取り出した場合に、溶接を行った箇所と、溶接を行っていない箇所、つまり溶接箇所とは反対側の端部と、のスプリングバック量が異なるが、この実施形態では、コレット１５によって、溶接箇所とは反対側の端部、つまりギヤ部２の鉛直方向下側となる箇所に比較的大きな力をかけて、ギヤ部２の下側を上側よりも拡径させて、溶接を行うので、インターナルギヤ１を取り出した際のスプリングバック量の差違によるインターナルギヤ１の精度悪化を抑制し、精度の良い製品を製造することができる。   When the internal gear 1 is taken out, the amount of spring back is different between a place where welding is performed and a place where welding is not performed, that is, the end opposite to the welding place. 15, a relatively large force is applied to the end opposite to the welding location, that is, the location on the lower side in the vertical direction of the gear portion 2, and the lower side of the gear portion 2 is expanded in diameter relative to the upper side, and welding is performed. Therefore, it is possible to suppress deterioration in accuracy of the internal gear 1 due to a difference in the amount of spring back when the internal gear 1 is taken out, and to manufacture a product with high accuracy.

なお、この実施形態では、プロジェクション溶接について説明を行ったが、これに限られることはなく、その他の溶接方法において溶接を行う際にも使用することができる。   In addition, although this embodiment demonstrated projection welding, it is not restricted to this, It can use also when welding in another welding method.

また、コレット５の径を押さえ板１６と締め付けネジ１７とによって調整して固定し、リングギヤ２とプレート３とを配置して、上電極１２と下電極１１とで加圧して溶接を行っても良い。   Further, the diameter of the collet 5 may be adjusted and fixed by the pressing plate 16 and the fastening screw 17, the ring gear 2 and the plate 3 may be disposed, and the upper electrode 12 and the lower electrode 11 may be pressurized and welded. good.

また、コレットを設けずに、インターナルギヤを鉛直方向に加圧して、テーパ形状の台座に直接摺接させて、インターナルギヤのプレート部とギヤ部とを溶接する箇所とは反対側の端部を拡径させて、溶接を行っても良い。   Also, without providing a collet, press the internal gear in the vertical direction and directly contact the taper-shaped pedestal so that the end opposite to the place where the plate portion and gear portion of the internal gear are welded The part may be enlarged in diameter and welding may be performed.

本発明の実施形態の効果について説明する。   The effect of the embodiment of the present invention will be described.

例えばインターナルギヤ１のギヤ部２とプレート部３とを溶接した場合に、溶接を行う端部側と、溶接を行う端部側とは反対側の端部側と、では溶接後のスプリングバック量が異なるために、インターナルギヤ１が変形してインターナルギヤ１の精度が悪くなる場合がある。この実施形態では、インターナルギヤ１のギヤ部２とプレート部３とを溶接する際に、溶接後のスプリングバック量による変形を考慮して、テーパ形状の台座１４、コレット１５を用い、溶接箇所とは反対側のギヤ部２の端部側を、溶接箇所の端部側よりも拡径させて溶接する。これによって、溶接後にスプリングバック量の差違によるインターナルギヤ１が変形を考慮し、精度の良いインターナルギヤ１を製造することができる。   For example, when the gear portion 2 of the internal gear 1 and the plate portion 3 are welded, the spring back after the welding is performed on the end portion side to be welded and the end portion side opposite to the end portion side to be welded. Since the amount is different, the internal gear 1 may be deformed and the accuracy of the internal gear 1 may be deteriorated. In this embodiment, when welding the gear portion 2 and the plate portion 3 of the internal gear 1, in consideration of deformation due to the amount of springback after welding, a taper base 14 and a collet 15 are used, The end portion side of the gear portion 2 on the opposite side is welded with a diameter larger than the end portion side of the welded portion. As a result, the internal gear 1 can be manufactured with high accuracy in consideration of deformation of the internal gear 1 due to the difference in the springback amount after welding.

本発明は上記した実施形態に限定されるものではなく、その技術的思想の範囲内でなしうるさまざまな変更、改良が含まれることは言うまでもない。   It goes without saying that the present invention is not limited to the above-described embodiments, and includes various modifications and improvements that can be made within the scope of the technical idea.

本発明の実施形態のインターナルギヤを設けた変速機の一部を示す断面図である。It is sectional drawing which shows a part of transmission which provided the internal gear of embodiment of this invention. 本発明の実施形態のインターナルギヤの断面図である。It is sectional drawing of the internal gear of embodiment of this invention. 本発明の実施形態のプロジェクション溶接機の構成図である。It is a block diagram of the projection welder of embodiment of this invention. 本発明の実施形態の溶接治具の構成図である。It is a block diagram of the welding jig of embodiment of this invention. 本発明の実施形態のコレットの上方斜視図である。It is an upper perspective view of the collet of the embodiment of the present invention. 本発明の実施形態のコレットの概略断面図である。It is a schematic sectional drawing of the collet of embodiment of this invention. 本発明の実施形態の製造方法を示すフローチャートである。It is a flowchart which shows the manufacturing method of embodiment of this invention.

符号の説明Explanation of symbols

１ インターナルギヤ
２ ギヤ部（筒状部材）
３ プレート部（板状部材）
１０ プロジェクション溶接機
１１ 下電極
１２ 上電極
１３ 溶接治具
１４ 台座（第１治具）
１５ コレット（第２治具）
１６ 押さえ板
１７ 締め付けネジ 1 Internal gear 2 Gear part (tubular member)
3 Plate part (plate-like member)
DESCRIPTION OF SYMBOLS 10 Projection welding machine 11 Lower electrode 12 Upper electrode 13 Welding jig 14 Base (1st jig)
15 Collet (second jig)
16 Presser plate 17 Tightening screw

Claims (5)

筒状部材の端部に板状部材を溶接する溶接方法において、
前記筒状部材の径方向外側に向けて前記筒状部材に付勢力を与えて、前記筒状部材の前記板状部材が溶接される側の第１端部に対して、軸方向反対側の端部である第２端部の径を、前記第１端部の径よりも拡径させて、溶接することを特徴とする溶接方法。 In the welding method of welding the plate-like member to the end of the tubular member,
An urging force is applied to the tubular member toward the radially outer side of the tubular member, and the first end of the tubular member on the side where the plate-like member is welded is opposite to the axial direction. A welding method, wherein a diameter of a second end portion which is an end portion is made larger than a diameter of the first end portion and welding is performed. 前記筒状部材の剛性が小さいほど、前記第２端部の径を、前記第１端部の径よりも大きくすることを特徴とする請求項２に記載の溶接方法。   The welding method according to claim 2, wherein the diameter of the second end portion is larger than the diameter of the first end portion as the rigidity of the cylindrical member is smaller. 請求項１または２の溶接方法で使用する溶接治具において、
前記筒状部材の内側に位置し、前記筒状部材の径方向外側に向けて前記筒状部材に付勢力を与える治具を備え、
前記治具は、前記治具の第３端部および第４端部にて前記第１端部および前記第２端部とそれぞれ当接し、
前記治具の外周壁は、前記第３端部から前記第４端部にかけて拡径するテーパ形状であることを特徴とする溶接治具。 In the welding jig used with the welding method of Claim 1 or 2,
A jig that is positioned inside the cylindrical member and that applies a biasing force to the cylindrical member toward the radially outer side of the cylindrical member;
The jig is in contact with the first end and the second end at the third end and the fourth end of the jig, respectively.
The outer periphery wall of the said jig | tool is a taper shape which expands from the said 3rd end part to the said 4th end part, The welding jig | tool characterized by the above-mentioned. 前記治具は、
前記筒状部材の内側に設けられ、前記筒状部材と同軸方向に所定のテーパ形状の外周壁を有する第１治具と、
前記第１治具と前記筒状部材の内周壁との間に配設され、前記第１治具の前記外周壁と摺接して径が変化して前記筒状部材と当接する第２治具と、
前記第２治具を前記筒状部材の軸方向へ移動させて、前記第２治具を前記第１治具の前記外周壁に沿って押圧して、前記第２治具の径を大きくする押し圧治具と、を備え、
前記第２治具の外周壁が、前記第３端部から前記第４端部にかけて拡径するテーパ形状であることを特徴とする請求項３に記載の溶接治具。 The jig is
A first jig provided on the inner side of the cylindrical member and having an outer peripheral wall having a predetermined taper shape coaxially with the cylindrical member;
A second jig that is disposed between the first jig and the inner peripheral wall of the cylindrical member and is in sliding contact with the outer peripheral wall of the first jig to change its diameter and contact the cylindrical member. When,
The diameter of the second jig is increased by moving the second jig in the axial direction of the cylindrical member and pressing the second jig along the outer peripheral wall of the first jig. A pressing jig, and
4. The welding jig according to claim 3, wherein an outer peripheral wall of the second jig has a tapered shape whose diameter increases from the third end portion to the fourth end portion. 前記筒状部材の剛性が小さいほど、前記第４端部の径を、前記第３端部の径よりも大きくすることを特徴とする請求項３または４に記載の溶接治具。   The welding jig according to claim 3 or 4, wherein the smaller the rigidity of the tubular member, the larger the diameter of the fourth end portion than the diameter of the third end portion.
JP2007220745A 2007-08-28 2007-08-28 Welding method and welding jig Expired - Fee Related JP5232423B2 (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013122265A (en) * 2011-12-09 2013-06-20 Aisin Kiko Co Ltd Welding method for vehicle drive plate and welding device
JP2015009245A (en) * 2013-06-27 2015-01-19 マツダ株式会社 Manufacturing method for geared member and geared member
CN107639338A (en) * 2016-07-21 2018-01-30 加特可株式会社 Convex welding device
CN109202251A (en) * 2018-10-17 2019-01-15 上海兰盈智能科技有限公司 Projection welding of screws chuck structure

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JPH08197241A (en) * 1995-01-23 1996-08-06 Hitachi Ltd Manufacture of tubular vessel and tubular vessel
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JP2005088048A (en) * 2003-09-17 2005-04-07 Toshiba Plant Systems & Services Corp Flange for absorbing welding deformation for piping joint, and piping joint using the same

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JPS536242A (en) * 1976-07-07 1978-01-20 Hitachi Ltd Joint structure of flanges
JPH04200887A (en) * 1990-11-30 1992-07-21 Hitachi Ltd Manufacture of tubular container
JPH08197241A (en) * 1995-01-23 1996-08-06 Hitachi Ltd Manufacture of tubular vessel and tubular vessel
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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013122265A (en) * 2011-12-09 2013-06-20 Aisin Kiko Co Ltd Welding method for vehicle drive plate and welding device
JP2015009245A (en) * 2013-06-27 2015-01-19 マツダ株式会社 Manufacturing method for geared member and geared member
CN107639338A (en) * 2016-07-21 2018-01-30 加特可株式会社 Convex welding device
CN107639338B (en) * 2016-07-21 2020-02-14 加特可株式会社 Projection welding device
CN109202251A (en) * 2018-10-17 2019-01-15 上海兰盈智能科技有限公司 Projection welding of screws chuck structure

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