JP2020523201A - Welding process of differential assembly - Google Patents
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/14—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass gear parts, e.g. gear wheels
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/22—Spot welding
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/211—Bonding by welding with interposition of special material to facilitate connection of the parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/242—Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/21—Bonding by welding
- B23K26/24—Seam welding
- B23K26/28—Seam welding of curved planar seams
- B23K26/282—Seam welding of curved planar seams of tube sections
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/20—Bonding
- B23K26/32—Bonding taking account of the properties of the material involved
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/12—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to investigating the properties, e.g. the weldability, of materials
- B23K31/125—Weld quality monitoring
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/006—Vehicles
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/04—Tubular or hollow articles
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2103/00—Materials to be soldered, welded or cut
- B23K2103/02—Iron or ferrous alloys
- B23K2103/06—Cast-iron alloys
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P2700/00—Indexing scheme relating to the articles being treated, e.g. manufactured, repaired, assembled, connected or other operations covered in the subgroups
- B23P2700/50—Other automobile vehicle parts, i.e. manufactured in assembly lines
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Abstract
本願の発明は、自動車の付属品の製造技術の分野に属し、具体的には、（１）相互に配合可能なデフケースとデフギアを準備するステップと、（２）レーザーでクリーニングするステップと、（３）圧入するステップと、（４）溶接ワイヤを充填し、レーザーでスポット溶接を行うステップと、（５）円形溶接するステップと、（６）溶接部をクリーニングするステップと、（７）超音波探傷を行うステップと、（８）ギアを研削するステップと、を含む差動アセンブリの溶接プロセスを開示する。従来技術と比較して、このプロセスは操作が簡単であり、製造された差動アセンブリの構造が単純になり、加工コストが低く、精度が高く、全体的に軽くなる。【選択図】図１The invention of the present application belongs to the field of manufacturing technology of automobile accessories, and specifically, (1) preparing a differential case and differential gear that can be mixed with each other, (2) cleaning with a laser, 3) press-fitting step, (4) filling welding wire and performing spot welding with laser, (5) circular welding step, (6) cleaning welded portion, (7) ultrasonic wave Disclosed is a welding process of a differential assembly including a flaw detection step and (8) a gear grinding step. Compared with the prior art, this process is simple to operate, the structure of the manufactured differential assembly is simple, the processing cost is low, the accuracy is high, and the overall weight is light. [Selection diagram] Figure 1
Description
本発明は、自動車の付属品の製造技術の分野に属し、具体的には、差動アセンブリの溶接プロセスを開示する。 The present invention is in the field of automotive accessory manufacturing technology and specifically discloses a welding process for differential assemblies.
差動アセンブリは、自動車のターニングや方向転換などを実現するために自動車において重要かつ不可欠な部品であり、主にデフケースとデフギアとで構成される。現在、自動車のデフケースはほとんどダクタイル鋳鉄（ＱＴ５００、ＱＴ６００など）であり、デフギアはほとんど低炭素鋼（２０ＣｒＭｏＨ、２０ＭｎＣｒ５など）であるため、一般的なデフギアとデフケースの接続方式では、デフギアをボルトまたはリベットによってデフケースに接続されている。従来のボルトまたはリベットによって差動アセンブリを接続する方式は、次のような欠点がある。
１．デフケースおよびデフギアには穴あけ、タッピングおよび組み立てなどの煩雑な加工プロセスを必要とし、加工し難しく、コストが高い。
２．従来の差動アセンブリには、ボルト、リベットなどの構造が存在するため、差動アセンブリ全体のサイズを小さくすることが困難であり加工し難しく、差動アセンブリの重量や体積が大きくなり、新エネルギーおよびハイエンド車両の小型軽量部品の要件を満たすことが困難である。
３．従来の差動アセンブリは、デフギアを精密加工（ギア研削）してデフケースに組み立てるものであるため、取付誤差によりデフギアの精度が低下し、自動車の使用に悪影響を及ぼす。
４．従来の差動アセンブリを使用する自動車では、自動車の運転中、ボルトは大きい剪断力にさらされる摩耗部分であり、交換に時間と労力がかかり、且つ交換コストも高い。
The differential assembly is an important and indispensable component in an automobile for realizing turning, turning, etc. of the automobile, and is mainly composed of a differential case and a differential gear. Currently, most diff cases of automobiles are ductile cast iron (QT500, QT600, etc.), and diff gears are mostly low carbon steel (20CrMoH, 20MnCr5, etc.). Is connected to the diff case by. The conventional method of connecting the differential assemblies with bolts or rivets has the following drawbacks.
1. The diff case and diff gear require complicated processing processes such as drilling, tapping and assembly, are difficult to process, and are expensive.
2. Since the conventional differential assembly has structures such as bolts and rivets, it is difficult to reduce the size of the entire differential assembly and it is difficult to process it. And it is difficult to meet the requirements of small and lightweight parts for high-end vehicles.
3. In the conventional differential assembly, since the differential gear is precision machined (gear grinding) to be assembled in the differential case, the accuracy of the differential gear is lowered due to a mounting error, which adversely affects the use of the vehicle.
4. In vehicles that use conventional differential assemblies, the bolts are wear parts that are subject to high shear forces during vehicle operation, which is time consuming, labor intensive, and expensive to replace.
本発明の目的は、従来の差動アセンブリにおける加工し難しく、コストが高く、精度が低く、軽量化が難しい問題を解決するための差動アセンブリの溶接プロセスを提供する。 An object of the present invention is to provide a welding process of a differential assembly which is difficult to process, costly, low in accuracy, and difficult to reduce in weight in the conventional differential assembly.
上記の目的を達成するために、本発明の基本的な技術手段は、
（１）相互に配合可能な外側が段付き軸部であるデフケースとデフギアを準備するステップと、
（２）デフケースとデフギア上のオイルやカーボン層を取り除き、デフケースとデフギアの接触面に異物や不純物がなくなるまでレーザーでクリーニングするステップと、
（３）デフケースの小径の段付き軸部にデフギアの軸穴を嵌め込み、デフギアを段付き軸部の段差に押し付けるステップと、
（４）０．６〜１．５ｍｍの鉄ニッケル合金溶接ワイヤを溶接ワイヤ充填機構によりデフケースとデフギアの接触面の隙間に充填し、レーザーによるスポット溶接でデフケースとデフギアの接触面を溶接するステップと、
（５）スポット溶接が完了した後、デフケースとデフギアのすべての接触面を円形溶接によって溶接するステップと、
（６）溶接部をクリーニングし、ブラシを使用して溶接部を清掃し、溶接部周辺の溶接スラグを除去するステップと、
（７）超音波探傷を行い、超音波発生器を溶接部に垂直にさせ、すべての溶接部をスキャンしてデフギアとデフケースの溶接品質を検査するステップと、
（８）円形溶接が完了した後、デフギアがＧＢ/Ｔ １００９５．１―２００８/ＩＳＯ １３２８-１:１９９５の３-７級の精度基準に達するまでデフギアに対してギア研削処理を行うステップと、を含む差動アセンブリの溶接プロセスである。
In order to achieve the above object, the basic technical means of the present invention are:
(1) Preparing a diff case and a diff gear whose outer part is a stepped shaft part that can be mixed with each other,
(2) A step of removing the oil and carbon layer on the differential case and the differential gear and cleaning with a laser until the contact surface between the differential case and the differential gear is free of foreign matter and impurities.
(3) The step of fitting the shaft hole of the differential gear into the small diameter stepped shaft portion of the differential case, and pressing the differential gear to the step of the stepped shaft portion,
(4) Filling a gap between the contact surfaces of the differential case and the differential gear with a welding wire filling mechanism with an iron-nickel alloy welding wire of 0.6 to 1.5 mm, and welding the contact surfaces of the differential case and the differential gear by laser spot welding. ,
(5) After the spot welding is completed, a step of welding all contact surfaces of the differential case and the differential gear by circular welding,
(6) cleaning the weld, cleaning the weld with a brush, and removing the weld slag around the weld;
(7) Performing ultrasonic flaw detection, making the ultrasonic generator perpendicular to the weld, scanning all welds, and inspecting the welding quality of the differential gear and differential case;
(8) After the circular welding is completed, a step of performing a gear grinding process on the differential gear until the differential gear reaches the accuracy standard of class 3-7 of GB/T 100951-208/ISO 1328-1:1995, Is a welding process of the differential assembly including.
本基本的な技術手段の有益な効果は以下のとおりである。
１、差動アセンブリは、溶接方式を採用して低炭素鋼のデフギアとダクタイル鋳鉄のデフケースを固定的に接続し、デフケースとデフギアに対する穴あけ、タッピングなどの加工、およびデフケースとデフギアの組み立てを省略し、さらに差動アセンブリの精度に対する加工および組み立ての影響を回避し、生産コストを低減し、生産効率および加工精度を向上させる。
２、溶接方式により製造された差動アセンブリは、ボルト構造を省略し、製造された差動アセンブリをよりコンパクトかつ軽量にして、全体的に軽くなり、電気自動車の構造要件に応じて、差動アセンブリ全体のサイズを小さくすることができ、差動アセンブリの用途が広くなる。
３、溶接により製造された差動アセンブリは、構造が簡単であり、生産しやすく、且つ溶接によりケーシングとギアの接続強度が向上し、製造された差動アセンブリの耐久性が高い。
４、ニッケル鉄合金を高温で溶解した後、異なる材質のデフケースとデフギアを融合および溶接することができ、その結果、デフケースとデフギアの溶接強度が所期の要求を満たす。
５、デフギアとデフケースの接触面をスポット溶接し、その後円形溶接するため、溶接中のデフギアとデフケースの相対的な変位により溶接後の差動アセンブリが変形し、所期の精度が得られないことを回避することができるとともに、デフギアとデフケースをより強固に溶接することができる。
The beneficial effects of this basic technical means are as follows.
1. The differential assembly adopts a welding method to fixedly connect the low carbon steel differential gear and the ductile cast iron differential case, omitting the drilling and tapping of the differential case and the differential gear, and the assembly of the differential case and the differential gear. Furthermore, it avoids the influence of machining and assembly on the accuracy of the differential assembly, reduces production cost, and improves production efficiency and machining accuracy.
2, the differential assembly manufactured by welding method omits the bolt structure, makes the manufactured differential assembly more compact and lightweight, and makes it lighter overall, and the differential assembly can be manufactured according to the structural requirements of the electric vehicle. The overall size of the assembly can be reduced, which makes the differential assembly more versatile.
3. The differential assembly manufactured by welding has a simple structure and is easy to produce, and the connection strength between the casing and the gear is improved by welding, and the manufactured differential assembly has high durability.
4. After melting the nickel-iron alloy at high temperature, the differential case and the differential gear of different materials can be fused and welded, and as a result, the welding strength of the differential case and the differential gear satisfies the desired requirement.
5. Spot welding the contact surface of the differential gear and the differential case, and then circular welding, the relative displacement of the differential gear and the differential case during welding deforms the differential assembly after welding, and the desired accuracy cannot be obtained. It is possible to avoid the above, and it is possible to weld the differential gear and the differential case more firmly.
従来技術と比較して、本プロセスは操作が簡単であり、製造された差動アセンブリは構造が簡単で、加工コストが低く、精度が高く、全体的に軽くなる。 Compared with the prior art, the process is simple to operate, and the manufactured differential assembly is simple in structure, low in machining cost, high in precision and overall light in weight.
好ましい技術手段１：基本的な技術手段として、ステップ（４）において溶接ワイヤを充填した後、デフケースとデフギアの接触面を均等に３〜８のポイントに分割してスポット溶接を行うことが好ましい。スポット溶接により、溶接中のデフケースとデフギアの相対的な変位をより効果的に防止する。 Preferred Technical Means 1: As a basic technical means, it is preferable to fill the welding wire in step (4) and then divide the contact surface between the differential case and the differential gear into 3 to 8 points to perform spot welding. Spot welding more effectively prevents relative displacement of the differential case and the differential gear during welding.
好ましい技術手段２：技術手段１のさらなる改良として、ステップ（５）においてデフケースとデフギアを治具でクランプし、レーザービームを使用して溶接部の周りに円を描いて鉄ニッケル合金溶接ワイヤを熔解し、デフギアとデフケースを溶接して固定する。より速く、より安定的に加工することができ、デフギアとデフケースの溶接品質がより向上し、加工効率がより高くなる。 Preferred technical means 2: As a further improvement of technical means 1, in step (5), the differential case and the differential gear are clamped with a jig, and a laser beam is used to draw a circle around the welded portion to melt the iron-nickel alloy welding wire. Then, the diff gear and the diff case are welded and fixed. It can be processed more quickly and more stably, the welding quality of the differential gear and the differential case is further improved, and the processing efficiency is higher.
好ましい技術手段３：技術手段２のさらなる改良として、ステップ（５）およびステップ（６）において、溶接位置はデフギアとデフケースの軸方向の接触面に位置する。デフギアとデフケースの両者に相対的な力が作用された場合、両者の軸方向の接触面が力点になり、ここでの溶接によりデフギアとデフケースの耐久性が高くなる。
Preferred technical means 3: As a further refinement of
好ましい技術手段４：技術手段３のさらなる改良として、前記デフケースとデフギアの溶接箇所は段付き軸穴の小径の端部に位置する。ここで、デフケースとデフギアとが密着し、溶接に便利であり、両者がより強固に接続される。
Preferred technical means 4: As a further improvement of the
好ましい技術手段５：技術手段４のさらなる改良として、前記デフケースとデフギアの溶接箇所の溶接部の深さは５±０．５ｍｍである。デフケースとデフギアの接続強度の要件を一層満たす。 Preferable technical means 5: As a further improvement of the technical means 4, the depth of the welding portion at the welding portion of the differential case and the differential gear is 5±0.5 mm. Further meet the connection strength requirements of differential case and differential gear.
好ましい技術手段６：技術手段２のさらなる改良として、ステップ（５）およびステップ（６）において、溶接位置はデフギアとデフケースの径方向の接触面に位置する。外側に向う溶接口により、溶接作業に便利であり、且つ差動アセンブリを使用する場合、デフギアとデフケースに相対的な力が作用され、それらの接触面の径方向の位置で溶接され、相対的な力を効果的に相殺することができるので、差動アセンブリの耐久性が高くなる。
Preferred technical means 6: As a further refinement of
好ましい技術手段７：技術手段６のさらなる改良として、前記ギアとケーシングの溶接箇所の溶接部の深さは６±０．５ｍｍである。ケーシングとギアの強固な溶接接続を一層確保する。 Preferred technical means 7: As a further refinement of technical means 6, the depth of the weld at the welding point of the gear and the casing is 6±0.5 mm. Further secure a strong welded connection between the casing and the gear.
以下、具体的な実施形態を通じて本発明をさらに詳細に説明する。 Hereinafter, the present invention will be described in more detail through specific embodiments.
（１）相互に配合可能な外側が段付き軸部であるデフケース２とデフギア１を準備するステップと、
（２）デフケース２とデフギア１上のオイルやカーボン層を取り除き、デフケース２とデフギア１の接触面に異物や不純物がなくなるまでレーザーでクリーニングするステップと、
（３）デフケース２の小径の段付き軸部にデフギア１の軸穴を嵌め込み、デフギア１を段付き軸部の段差に押し付けるステップと、
（４）デフギア１とデフケース２を治具により固定し、１ｍｍの鉄ニッケル合金溶接ワイヤを溶接ワイヤ充填機構によりデフケース２とデフギア１の軸方向の接触面の隙間に充填し、デフケース２とデフギア１の接触面を均等に４つのポイントに分割してスポット溶接を行い、デフケース２とデフギア１の溶接箇所は段付き軸穴の小径の端部に位置するステップと、
（５）スポット溶接が完了した後、工作機械のプログラムにより、溶接用のレーザービームを差動アセンブリの溶接部３の周りに円を描いて鉄ニッケル合金溶接ワイヤをすべて高温で溶解し、デフケース２とデフギア１の軸方向の接触面全体を接続し、溶接箇所の有効溶接部３の深さは５±０．５ｍｍであるステップと、
（６）溶接部３をクリーニングし、差動アセンブリを治具でクランプして回転させ、ブラシを使用して溶接部３に接触させ、差動アセンブリの回転中、ブラシにより溶接部３を清掃し、溶接部３周りの溶接スラグを除去するステップと、
（７）超音波探傷を行い、差動アセンブリを治具でクランプして回転させ、超音波発生器を溶接部３に垂直にさせ、差動アセンブリの回転中、超音波にてすべての溶接部３をスキャンさせ、デフギア１とデフケース２の溶接部３の品質を検出し、溶接部３に亀裂、気孔があり、溶接部３が所期の有効深さの要件を満たしていない場合、廃棄してリサイクル可能とし、溶接部３には亀裂、気孔がなく、溶接部３が所期の有効深さの要件を満たしている場合、所期の溶接が得られると証明可能とするステップと、
（８）円形溶接が完了した後、デフギア１がＧＢ/Ｔ １００９５．１―２００８/ＩＳＯ １３２８-１:１９９５中３-７級の精度基準に達するまでデフギア１に対してギア研削処理を行い、溶接された差動アセンブリにショットブラスト処理を行うステップと、を含む差動アセンブリの溶接プロセスである。
(1) a step of preparing a
(2) A step of removing oil and carbon layers on the
(3) Step of fitting the shaft hole of the differential gear 1 into the stepped shaft portion having a small diameter of the
(4) The diff gear 1 and the
(5) After the spot welding is completed, according to the program of the machine tool, a laser beam for welding is drawn in a circle around the
(6) Cleaning the welded
(7) Ultrasonic flaw detection is performed, the differential assembly is clamped and rotated by a jig to make the ultrasonic generator perpendicular to the welded
(8) After the circular welding is completed, the differential gear 1 is subjected to gear grinding processing until the differential gear 1 reaches the accuracy standard of 3-7 grade in GB/T 100951-208/ISO 1328-1:1995, Performing a shot blasting process on the welded differential assembly, the welding process of the differential assembly.
本実施例は、実施例１との違いは、ステップ（４）において、０．６ｍｍの鉄ニッケル合金溶接ワイヤを溶接ワイヤ充填機構によりデフケース２とデフギア１の軸方向の接触面の隙間に充填し、デフケース２とデフギア１の接触面を均等に３つのポイントに分割してスポット溶接を行うことである。
デフケース２とデフギア１の現在のサイズに応じて、デフケース２とデフギア１の接触面の３つのポイントでスポット溶接を行い、両者を良好に初期固定することができ、０．６ｍｍの鉄ニッケル合金溶接ワイヤを使用すると、溶接過程がより速い。
This example is different from Example 1 in that in step (4), a 0.6 mm iron-nickel alloy welding wire is filled in a gap between axial contact surfaces of the
According to the current sizes of the
本実施例は、実施例１との違いは、ステップ（４）において、１．３ｍｍの鉄ニッケル合金溶接ワイヤを溶接ワイヤ充填機構によりデフケース２とデフギア１の軸方向の接触面の隙間に充填し、デフケース２とデフギア１の接触面を均等に６つのポイントに分割してスポット溶接を行うことである。
デフケース２とデフギア１の接触面の６つのポイントでスポット溶接を行い、多くの差動アセンブリに適用することができ、１．３ｍｍの鉄ニッケル合金溶接ワイヤを使用すると、溶接過程がより強固になる。
This example is different from Example 1 in that in step (4), a 1.3 mm iron-nickel alloy welding wire is filled in a gap between axial contact surfaces of the
Spot welding can be performed at 6 points on the contact surface between the
本実施例は、実施例１との違いは、ステップ（４）において、１．５ｍｍの鉄ニッケル合金溶接ワイヤを溶接ワイヤ充填機構によりデフケース２とデフギア１の軸方向の接触面の隙間に充填し、デフケース２とデフギア１の接触面を均等に８つのポイントに分割してスポット溶接を行うことである。
デフケース２とデフギア１の接触面の８つのポイントでスポット溶接を行い、サイズが大きい差動アセンブリに対応し、１．５ｍｍの鉄ニッケル合金溶接ワイヤを使用すると、サイズが大きい差動アセンブリをより強固に溶接することができる。
This example is different from Example 1 in that in step (4), a 1.5 mm iron-nickel alloy welding wire is filled in a gap between axial contact surfaces of the
Spot welding is performed at eight points on the contact surface between the
本実施例は、実施例１との違いは、ステップ（５）およびステップ（６）において、溶接位置はデフギア１とデフケース２の径方向の接触面に位置し、前記ギアとケーシングの溶接箇所の溶接部３の深さは６±０．５ｍｍであることである。
本実施例の溶接プロセスにより製造された差動アセンブリは図３および図４に示される。
The present embodiment is different from the first embodiment in that in steps (5) and (6), the welding position is located on the radial contact surface between the differential gear 1 and the
The differential assembly produced by the welding process of this example is shown in FIGS.
上記したことは本発明の実施例に過ぎず、技術手段で周知の具体的な構造および特性などの常識は、ここではあまり説明しない。当業者は、本発明の技術手段から逸脱することなく、いくつかの変形や改良を加えることができることに留意すべき、これらの変形や改良も本発明の保護範囲と見なされるべきであり、これらは本発明の実施効果および特許の実用性に何の影響を与えない。 The above is merely an example of the present invention, and common sense such as specific structures and characteristics well known in the technical means will not be described here. It should be noted that those skilled in the art can make some modifications and improvements without departing from the technical means of the present invention, and these modifications and improvements should be considered as the protection scope of the present invention. Has no effect on the implementation effect of the present invention and the utility of the patent.
１ デフギア
２ デフケース
３ 溶接部
1
Claims (8)
（２）デフケースとデフギア上のオイルやカーボン層を取り除き、デフケースとデフギアの接触面に異物や不純物がなくなるまでレーザーでクリーニングするステップと、
（３）デフケースの小径の段付き軸部にデフギアの軸穴を嵌め込み、デフギアを段付き軸部の段差に押し付けるステップと、
（４）０．６〜１．５ｍｍの鉄ニッケル合金溶接ワイヤを溶接ワイヤ充填機構によりデフケースとデフギアの接触面の隙間に充填し、レーザーによるスポット溶接でデフケースとデフギアの接触面を溶接するステップと、
（５）スポット溶接が完了した後、デフケースとデフギアのすべての接触面を円形溶接によって溶接するステップと、
（６）溶接部をクリーニングし、ブラシを使用して溶接部を清掃し、溶接部周辺の溶接スラグを除去するステップと、
（７）超音波探傷を行い、超音波発生器を溶接部に垂直にさせ、すべての溶接部をスキャンしてデフギアとデフケースの溶接品質を検査するステップと、
（８）円形溶接が完了した後、デフギアがＧＢ/Ｔ １００９５．１―２００８/ＩＳＯ １３２８-１:１９９５の３-７級の精度基準に達するまでデフギアに対してギア研削処理を行うステップと、を含むことを特徴とする差動アセンブリの溶接プロセス。 (1) Preparing a diff case and a diff gear whose outer part is a stepped shaft part that can be mixed with each other,
(2) A step of removing the oil and carbon layer on the differential case and the differential gear and cleaning with a laser until the contact surface between the differential case and the differential gear is free of foreign matter and impurities.
(3) The step of fitting the shaft hole of the differential gear into the small diameter stepped shaft portion of the differential case, and pressing the differential gear to the step of the stepped shaft portion,
(4) Filling a gap between the contact surfaces of the differential case and the differential gear with a welding wire filling mechanism with an iron-nickel alloy welding wire of 0.6 to 1.5 mm, and welding the contact surfaces of the differential case and the differential gear by laser spot welding. ,
(5) After the spot welding is completed, a step of welding all contact surfaces of the differential case and the differential gear by circular welding,
(6) cleaning the weld, cleaning the weld with a brush, and removing the weld slag around the weld;
(7) Performing ultrasonic flaw detection, making the ultrasonic generator perpendicular to the weld, scanning all welds, and inspecting the welding quality of the differential gear and differential case;
(8) After the circular welding is completed, a step of performing a gear grinding process on the differential gear until the differential gear reaches the accuracy standard of class 3-7 of GB/T 100951-208/ISO 1328-1:1995, A welding process of the differential assembly, which comprises:
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| PCT/CN2019/080629 WO2019185059A1 (en) | 2018-03-30 | 2019-03-29 | Welding process for differential assembly |
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| US11213917B2 (en) * | 2018-11-13 | 2022-01-04 | GM Global Technology Operations LLC | Fusion welding of ferrous alloy component parts using low carbon steel band |
| CN110939710A (en) * | 2019-12-30 | 2020-03-31 | 四川众友机械有限责任公司 | Shaft hole sealing structure of differential half shaft gear and machining process |
| CN112570918A (en) * | 2020-12-04 | 2021-03-30 | 南京劲拓海洋工程装备有限公司 | Method for welding gear and gear shaft of drilling platform |
| CN113732494A (en) * | 2021-08-31 | 2021-12-03 | 蜂巢传动科技河北有限公司 | Welding method |
| CN114770005B (en) * | 2022-05-17 | 2023-07-25 | 安徽双骏智能科技有限公司 | Welding platform of differential mechanism shell and application method thereof |
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