WO2019185059A1 - 一种差速器总成的焊接工艺 - Google Patents

一种差速器总成的焊接工艺 Download PDF

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Publication number
WO2019185059A1
WO2019185059A1 PCT/CN2019/080629 CN2019080629W WO2019185059A1 WO 2019185059 A1 WO2019185059 A1 WO 2019185059A1 CN 2019080629 W CN2019080629 W CN 2019080629W WO 2019185059 A1 WO2019185059 A1 WO 2019185059A1
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WO
WIPO (PCT)
Prior art keywords
differential
welding
weld
differential gear
gear
Prior art date
Application number
PCT/CN2019/080629
Other languages
English (en)
French (fr)
Chinese (zh)
Inventor
邱丽娜
Original Assignee
重庆联豪科技有限公司
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 重庆联豪科技有限公司 filed Critical 重庆联豪科技有限公司
Priority to DE112019000066.7T priority Critical patent/DE112019000066T5/de
Priority to JP2020519176A priority patent/JP2020523201A/ja
Publication of WO2019185059A1 publication Critical patent/WO2019185059A1/zh

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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
    • 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
    • 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
    • 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
    • B23K26/242—Fillet welding, i.e. involving a weld of substantially triangular cross section joining two parts
    • 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
    • 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
    • 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
    • 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
    • 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
    • B23K2101/04—Tubular or hollow articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K2103/00—Materials to be soldered, welded or cut
    • B23K2103/02—Iron or ferrous alloys
    • B23K2103/06—Cast-iron alloys
    • 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

Definitions

  • the invention belongs to the technical field of automobile parts manufacturing, and specifically discloses a welding process of a differential assembly.
  • the differential assembly is an important and indispensable component in the car to realize turning and changing of the car, and is mainly composed of a differential case and a differential gear.
  • the differential housings on automobiles are mostly ductile iron (such as QT500 and QT600), and the differential gears are mostly low carbon steel (such as 20CrMoH, 20MnCr5).
  • the differential gear and the differential housing are The connection is made by connecting the differential gear to the differential housing with bolts or rivets.
  • Conventional screw or rivet-connected differential assemblies have the following disadvantages:
  • the differential housing and the differential gear require complicated machining processes such as drilling, tapping and assembly, which are difficult to process and costly.
  • the conventional differential assembly is to assemble the differential gear after finishing (grinding) to the differential housing.
  • the accuracy of the differential gear is reduced due to the error of the installation, which affects the use of the automobile.
  • the object of the present invention is to provide a welding process for a differential assembly to solve the conventional differential assembly, which is difficult to process, high in cost, low in precision, and difficult to be lightweight.
  • the basic solution of the present invention is: a welding process of a differential assembly, comprising the following steps:
  • a 0.6-1.5 mm iron-nickel alloy welding wire is filled into the gap of the contact surface of the differential case and the differential gear by a wire filling mechanism, and the differential case is spot-welded by a laser. Welding with the contact surface of the differential gear;
  • the differential assembly is fixedly connected by the differential gear of the low carbon steel and the differential housing of the ductile iron, which reduces the drilling and threading of the differential housing and the differential gear.
  • the processing, as well as the assembly of the differential housing and the differential gear, further avoids the accuracy of the differential assembly due to machining and assembly, reduces production costs, and improves production efficiency and machining accuracy.
  • the differential assembly produced by welding reduces the bolt structure, which makes the differential assembly produced more compact and lighter in overall quality, and can be reduced according to the structural needs of the electric vehicle.
  • the size of the differential assembly allows the differential assembly to be used in a wide range.
  • the structure of the differential assembly produced by welding is relatively simple, easy to produce, and the joint strength of the casing and the gear is improved by welding, so that the differential assembly produced is more durable.
  • the differential housing of the different materials and the differential gear can be welded together, so that the welding strength of the differential housing and the differential gear can meet the required requirements.
  • the process is simple in operation, and the differential assembly produced can be simple in structure, low in processing cost, high in precision, and light in total.
  • step (4) after filling the welding wire, the contact faces of the differential case and the differential gear are evenly divided into 3-8 points for spot welding. Spot welding is more effective in preventing relative displacement of the differential housing and the differential gear during welding.
  • the differential case and the differential gear are clamped by a clamp, and a laser beam is used to wrap around the weld to dissolve the iron-nickel alloy wire.
  • the differential gear and the differential housing are welded and fixed. The welding process can be made more fast and stable, so that the differential gear and the differential housing have better welding quality and higher processing efficiency.
  • Preferred Embodiment 3 As a preferred embodiment 2, in the steps (5) and (6), the position of the welding is located at an axial contact surface of the differential gear and the differential case. When the differential gear and the differential housing are subjected to relative forces, the axial contact faces of the two are the points of force, where welding can make the differential gear and the differential housing more durable.
  • the differential housing and the differential gear weld are located at the end of the stepped shaft bore having a small diameter.
  • the differential housing and the differential gear are closely attached, which makes it easier to weld and also makes the connection between the two more secure.
  • Preferred Embodiment 5 As a preferred embodiment 4, the weld depth of the differential housing and the differential gear weld is 5 ⁇ 0.5 mm. The connection strength of the differential case and the differential gear is further satisfied.
  • Preferred Embodiment 6 As a preferred embodiment 2, in the steps (5) and (6), the position of the welding is located at a radial contact surface of the differential gear and the differential case.
  • the welding port can be made facing outward to facilitate the welding operation; and when the differential assembly is in use, the differential gear and the differential housing are relatively stressed, and the radial position of the contact surface is welded, which can effectively offset the relative Forced to make the differential assembly more durable.
  • the welded portion of the gear and the housing has a weld depth of 6 ⁇ 0.5 mm. It further ensures that the welded connection between the housing and the gear is relatively firm.
  • FIG. 1 is a schematic structural view of a differential assembly processed by the welding process of Embodiment 1;
  • Figure 2 is an enlarged view of the structure at A in Figure 1;
  • FIG. 3 is a schematic structural view of a differential assembly processed by the welding process of Embodiment 5;
  • Figure 4 is an enlarged view of the structure at B in Figure 1.
  • a welding process for a differential assembly includes the following steps:
  • the differential gear 1 and the differential case 2 are fixed by a jig, and a 1 mm iron-nickel alloy welding wire is filled into the axial contact surface of the differential case 2 and the differential gear 1 by a wire filling mechanism.
  • the contact faces of the differential case 2 and the differential gear 1 are evenly divided into 4 points for spot welding; the differential case 2 and the differential gear 1 are welded at the small diameter end of the stepped shaft hole. unit;
  • the machine tool is used to make the laser beam for welding go around the weld 3 of the differential assembly, and the iron-nickel alloy welding wire is completely dissolved at a high temperature, and the differential case is assembled. 2 and all the axial contact faces of the differential gear 1 are connected together, the effective weld 3 depth at the weld is 5 ⁇ 0.5 mm;
  • the present embodiment is different from the first embodiment in that, in the step (4), a 0.6 mm iron-nickel alloy welding wire is filled into the axial contact surface of the differential case 2 and the differential gear 1 by a wire filling mechanism. In the slit, the contact faces of the differential case 2 and the differential gear 1 are evenly divided into three points for spot welding.
  • the three points of the contact surface of the differential case 2 and the differential gear 1 are spot-welded, so that both are good.
  • the present embodiment is different from the first embodiment in that, in the step (4), a 1.3 mm iron-nickel alloy welding wire is filled into the axial contact surface of the differential case 2 and the differential gear 1 by a wire filling mechanism. In the slit, the contact faces of the differential case 2 and the differential gear 1 are evenly divided into 6 points for spot welding.
  • Spot welding the 6 points of the contact surface of the differential case 2 and the differential gear 1 can be applied to a plurality of differential assemblies, and a 1.3 mm iron-nickel alloy welding wire can be used to make the welding process more Firm.
  • the present embodiment is different from the first embodiment in that, in the step (4), a 1.5 mm iron-nickel alloy welding wire is filled into the axial contact surface of the differential case 2 and the differential gear 1 by a wire filling mechanism. In the slit, the contact faces of the differential case 2 and the differential gear 1 are evenly divided into 8 points for spot welding.
  • the present embodiment is different from Embodiment 1 in that, in the steps (5) and (6), the position of the welding is located at the radial contact surface of the differential gear 1 and the differential case 2;
  • the weld seam 3 at the weld of the casing has a depth of 6 ⁇ 0.5 mm.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Mechanical Engineering (AREA)
  • Plasma & Fusion (AREA)
  • Quality & Reliability (AREA)
  • Laser Beam Processing (AREA)
  • Retarders (AREA)
PCT/CN2019/080629 2018-03-30 2019-03-29 一种差速器总成的焊接工艺 WO2019185059A1 (zh)

Priority Applications (2)

Application Number Priority Date Filing Date Title
DE112019000066.7T DE112019000066T5 (de) 2018-03-30 2019-03-29 Schweißverfahren für eine Differentialbaugruppe
JP2020519176A JP2020523201A (ja) 2018-03-30 2019-03-29 差動アセンブリの溶接プロセス

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN201810295642.7A CN108500576A (zh) 2018-03-30 2018-03-30 一种差速器总成的焊接工艺
CN201810295642.7 2018-03-30

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Publication Number Publication Date
WO2019185059A1 true WO2019185059A1 (zh) 2019-10-03

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JP (1) JP2020523201A (de)
CN (1) CN108500576A (de)
DE (1) DE112019000066T5 (de)
WO (1) WO2019185059A1 (de)

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CN110939710A (zh) * 2019-12-30 2020-03-31 四川众友机械有限责任公司 一种差速器半轴齿轮的轴孔密封结构及加工工艺

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CN108500576A (zh) * 2018-03-30 2018-09-07 重庆联豪科技有限公司 一种差速器总成的焊接工艺
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
CN112570918A (zh) * 2020-12-04 2021-03-30 南京劲拓海洋工程装备有限公司 一种钻井平台齿轮和齿轴焊接方法
CN113732494A (zh) * 2021-08-31 2021-12-03 蜂巢传动科技河北有限公司 焊接方法
CN114770005B (zh) * 2022-05-17 2023-07-25 安徽双骏智能科技有限公司 一种差速器壳体的焊接平台及其使用方法

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110939710A (zh) * 2019-12-30 2020-03-31 四川众友机械有限责任公司 一种差速器半轴齿轮的轴孔密封结构及加工工艺

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JP2020523201A (ja) 2020-08-06
CN108500576A (zh) 2018-09-07

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