WO2019185059A1 - Welding process for differential assembly - Google Patents
Welding process for differential assembly Download PDFInfo
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- 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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- differential
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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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Abstract
Description
本发明属于汽车配件制造技术领域，具体公开了一种差速器总成的焊接工艺。The invention belongs to the technical field of automobile parts manufacturing, and specifically discloses a welding process of a differential assembly.
差速器总成是汽车里面一个实现汽车转弯、变向等重要且必不可少的部件，主要由差速器壳体和差速器齿轮组成。目前汽车上差速器壳体大多是球墨铸铁(如QT500、QT600)，差速器齿轮大多是低碳钢(如20CrMoH、20MnCr5)，通常情况下，差速器齿轮与差速器壳体的连接方式是将差速器齿轮用螺栓或者铆钉连接到差速器壳体上。传统的螺钉或者铆钉连接的差速器总成存在以下缺点：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. At present, 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). Usually, 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:
1.差速器壳体及差速器齿轮需要钻孔、攻螺纹及装配等繁琐的加工工艺，加工难度大、成本高。1. The differential housing and the differential gear require complicated machining processes such as drilling, tapping and assembly, which are difficult to process and costly.
2.传统差速器总成，由于存在螺栓、铆钉等结构，导致差速器总成的总体尺寸不能较小，不然会难以加工，这就导致差速器总成的质量重、体积大，很难适应目前新能源及高端车辆的零件结构小和轻量化的要求。2. The traditional differential assembly, due to the existence of bolts, rivets and other structures, the overall size of the differential assembly can not be small, otherwise it will be difficult to process, which results in the weight of the differential assembly, large volume, It is difficult to adapt to the current small and lightweight requirements for new energy and high-end vehicles.
3.传统的差速器总成是将差速器齿轮精加工(磨齿)后装配到差速器壳体上，由于装存在误差造成差速器齿轮精度的下降，影响汽车的使用。3. 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.
4、使用传统差速器总成的汽车，在汽车运行过程中，螺栓承受较大剪切力，属于易损件，更换费时费力，且更换成本高。4. In the automobile using the traditional differential assembly, the bolts are subjected to large shearing force during the running of the automobile, which is a wearing part, and the replacement is time-consuming and laborious, and the replacement cost is high.
发明内容Summary of the invention
本发明的目的在提供一种差速器总成的焊接工艺，以解决传统的差速器总成，加工难度大、成本高、精度低，较难轻量化的问题。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.
为了达到上述目的，本发明的基础方案为：一种差速器总成的焊接工艺，包括以下步骤：In order to achieve the above object, the basic solution of the present invention is: a welding process of a differential assembly, comprising the following steps:
(1)准备好可相互匹配的差速器壳体和差速器齿轮，差速器壳体外部为阶梯轴部；(1) Preparing a differential housing and a differential gear that are matched to each other, and the outside of the differential housing is a stepped shaft portion;
(2)去除差速器壳体和差速器齿轮上的油污和碳层，并进行激光清洗至差速器壳体和差速器齿轮的接触面无异物和杂质；(2) removing oil stains and carbon layers on the differential case and the differential gear, and performing laser cleaning until the contact faces of the differential case and the differential gear are free of foreign matter and impurities;
(3)将差速器齿轮的轴孔套置在差速器壳体直径较小的阶梯轴部上，并将差速器齿轮与阶梯轴部的台阶压紧；(3) arranging the shaft hole of the differential gear on the stepped shaft portion having a smaller diameter of the differential housing, and pressing the step of the differential gear and the stepped shaft portion;
(4)采用焊丝填充机构将0.6-1.5mm的铁镍合金焊丝填充到差速器壳体和差速器齿轮的接触面的缝隙中，再采用激光以点焊的方式将差速器壳体和差速器齿轮的接触面进行焊接；(4) 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;
(5)待点焊完成后，再采用圈焊的方式焊接差速器壳体和差速器齿轮的所有接触面；(5) After the spot welding is completed, all the contact faces of the differential case and the differential gear are welded by ring welding;
(6)清理焊缝，使用刷子刷洗焊缝，清除焊缝周围的焊渣；(6) Clean the weld, brush the weld with a brush, and remove the weld residue around the weld;
(7)超声波探伤，使用超声波发声器垂直于焊缝并经过所有焊缝，探查差速器齿轮和差速器壳体的焊缝质量；(7) Ultrasonic flaw detection, using an ultrasonic sounder perpendicular to the weld and passing through all welds to probe the weld quality of the differential gear and the differential housing;
(8)待圈焊完成后，对差速器齿轮进行磨齿处理，使差速器齿轮的达到GB/T 10095.1—2008/ISO 1328-1:1995中3-7级的精度标准。(8) After the ring welding is completed, the differential gear is ground to make the differential gear meet the accuracy standard of 3-7 in GB/T 10095.1-2008/ISO 1328-1:1995.
本基础方案的有益效果在于：The beneficial effects of this basic program are:
1、差速器总成采用焊接的方式将低碳钢的差速器齿轮和球铁的差速器壳体固定连接，减少了对差速器壳体和差速器齿轮的钻孔、螺纹等的加工，以及差速器壳体和差速器齿轮的装配，进一步避免了因加工和装配对差速器总成的精度影响，降低了生产成本，提高了生产效率和加工精度。1. 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.
2、采用焊接的方式生产的差速器总成，减少了螺栓结构，可使所生产的差速器总成结构更为紧凑、总质量较轻，且可根据电动车的结构需要，缩小整个差速器总成的尺寸，使得差速器总成的使用范围较广。2. 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.
3、通过焊接所生产的差速器总成结构较为简单，便于生产，且通过焊接提高了壳体和齿轮的连接强度，从而使所生产的差速器总成更为耐用。3. 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.
4、通过镍铁合金高温溶解后，可将不同材质的差速器壳体和差速器齿轮融合焊接到一起，可使得差速器壳体和差速器齿轮的焊接强度达到所需要求。4. After the high-temperature dissolution of the nickel-iron alloy, 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.
5、先对差速器齿轮和差速器壳体的接触面进行点焊，再进行圈焊，可避免焊接过程中差速器齿轮和差速器壳体发生相对位移，导致焊接后的差速器总成变形，精度达不到所需要求；同时还可使差速器齿轮和差速器壳体更为牢固的被焊接固定在一起。5. Spot welding the contact surface of the differential gear and the differential case first, and then performing ring welding to avoid relative displacement of the differential gear and the differential case during the welding process, resulting in poor welding. The speed changer assembly is deformed and the accuracy is not up to the required requirements. At the same time, the differential gear and the differential case can be welded and fixed together more firmly.
与现有技术相比，本工艺操作简单，可使得所生产的差速器总成结构简单、加工成本低、 精度较高、总量更轻。Compared with the prior art, 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.
优选方案一：作为基础方案的优选，步骤(4)中在填充焊丝后，对差速器壳体和差速器齿轮的接触面均匀分成3-8个点进行点焊。点焊更为有效的防止了差速器壳体和差速器齿轮在焊接过程中发生相对位移。Preferably, as a basis of the basic solution, in 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.
优选方案二：作为优选方案一的优选，步骤(5)中通过夹具将差速器壳体和差速器齿轮夹持，使用激光束围绕焊缝走一圈，溶解铁镍合金的焊丝，将差速器齿轮和差速器壳体焊接固定。可使焊接过程更为快速稳定，从而使差速器齿轮和差速器壳体焊接质量更加，加工效率更高。Preferably, in a second embodiment, in the step (5), 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.
优选方案三：作为优选方案二的优选，步骤(5)和步骤(6)中，焊接的位置位于差速器齿轮和差速器壳体的轴向接触面。在差速器齿轮和差速器壳体两者受到相对作用力时，两者的轴向接触面为受力点，在此处进行焊接可使差速器齿轮和差速器壳体更为耐用。Preferred Embodiment 3: As a
优选方案四：作为优选方案三的优选，所述差速器壳体和差速器齿轮焊接处位于阶梯轴孔小直径的端部。此处差速器壳体和差速器齿轮贴合较为紧密，更方便进行焊接，也可使两者连接更为牢固。Preferably, in a
优选方案五：作为优选方案四的优选，所述差速器壳体和差速器齿轮焊接处的焊缝深度为5±0.5mm。进一步满足差速器壳体和差速器齿轮的连接强度。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.
优选方案六：作为优选方案二的优选，步骤(5)和步骤(6)中，焊接的位置位于差速器齿轮和差速器壳体的径向接触面。可使得焊接口朝外，便于焊接操作；且由于差速器总成在使用时，差速器齿轮和差速器壳体相对受力，其接触面的径向位置进行焊接，可有效抵消相对受力，使差速器总成较为耐用。Preferred Embodiment 6: As a
优选方案七：作为优选方案六的优选，所述齿轮与壳体焊接处的焊缝深度为6±0.5mm。进一步保证壳体和齿轮焊接连接较为牢固。Preferred Solution 7: As a preferred embodiment 6, 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.
图1是利用实施例1的焊接工艺加工的差速器总成的结构示意图；1 is a schematic structural view of a differential assembly processed by the welding process of
图2是图1中A处的结构放大图；Figure 2 is an enlarged view of the structure at A in Figure 1;
图3是利用实施例5的焊接工艺加工的差速器总成的结构示意图；3 is a schematic structural view of a differential assembly processed by the welding process of Embodiment 5;
图4是图1中B处的结构放大图。Figure 4 is an enlarged view of the structure at B in Figure 1.
下面通过具体实施方式对本发明作进一步详细的说明：The present invention will be further described in detail below by way of specific embodiments:
说明书附图中的附图标记包括：差速器齿轮1、差速器壳体2、焊缝3。Reference numerals in the drawings of the specification include: a
实施例1Example 1
一种差速器总成的焊接工艺，包括以下步骤：A welding process for a differential assembly includes the following steps:
(1)准备好可相互匹配的差速器壳体2和差速器齿轮1，差速器壳体2外部为阶梯轴部；(1) Preparing the
(2)去除差速器壳体2和差速器齿轮1上的油污和碳层，并进行激光清洗至差速器壳体2和差速器齿轮1的接触面无异物和杂质；(2) removing the oil stain and carbon layer on the
(3)将差速器齿轮1的轴孔套置在差速器壳体2直径较小的阶梯轴部上，并将差速器齿轮1与阶梯轴部的台阶压紧；(3) arranging the shaft hole of the
(4)采用夹具将差速器齿轮1和差速器壳体2固定，采用焊丝填充机构将1mm的铁镍合金焊丝填充到差速器壳体2和差速器齿轮1的轴向接触面缝隙中，对差速器壳体2和差速器齿轮1的接触面均匀分成4个点进行点焊；差速器壳体2和差速器齿轮1焊接处位于阶梯轴孔小直径的端部；(4) The
(5)待点焊完成后，再依靠机床的程序，使焊接用的激光束围绕差速器总成的焊缝3走一圈，将铁镍合金焊丝全部高温溶解，将差速器壳体2和差速器齿轮1的所有轴向接触面连接到一起，焊接处的有效焊缝3深度为5±0.5mm；(5) After the spot welding is completed, the machine tool is used to make the laser beam for welding go around the
(6)清理焊缝3，使用夹具抓取差速器总成并旋转，使用刷子接触焊缝3，在差速器总成旋转的过程中，刷子将刷洗焊缝3，清除焊缝3周围的焊渣；(6) Clean the
(7)超声波探伤，使用夹具抓取差速器总成并旋转，使用超声波发声器垂直于焊缝3，在差速器总成旋转的过程中，超声波将扫过所有焊缝3，探查差速器齿轮1和差速器壳体2的焊缝3质量；若焊缝3存在裂纹、气孔，以及焊缝3达不到所需有效深度的要求，可将其报废回收；若焊缝3不存在裂纹、气孔，以及焊缝3达到所需有效深度的要求，即可证明焊接达到所需要求；(7) Ultrasonic flaw detection, using the clamp to grab the differential assembly and rotating, using the ultrasonic sounder perpendicular to the
(8)待圈焊完成后，对差速器齿轮1进行磨齿处理，再对焊接好的差速器总成进行抛丸处理，使差速器齿轮1的达到GB/T 10095.1—2008/ISO 1328-1:1995中3-7级的精度标准。(8) After the ring welding is completed, the
实施例2Example 2
本实施例与实施例1的不同之处在于，步骤(4)中，采用焊丝填充机构将0.6mm的铁镍合金焊丝填充到差速器壳体2和差速器齿轮1的轴向接触面缝隙中，对差速器壳体2和差速器齿轮1的接触面均匀分成3个点进行点焊。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
根据目前的差速器壳体2和差速器齿轮1所常用的尺寸，对差速器壳体2和差速器齿轮1的接触面的3个点进行点焊，即可将两者良好的初步固定；使用0.6mm的铁镍合金焊丝，可使焊接过程更加快速。According to the current common dimensions of the
实施例3Example 3
本实施例与实施例1的不同之处在于，步骤(4)中，采用焊丝填充机构将1.3mm的铁镍合金焊丝填充到差速器壳体2和差速器齿轮1的轴向接触面缝隙中，对差速器壳体2和差速器齿轮1的接触面均匀分成6个点进行点焊。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
对差速器壳体2和差速器齿轮1的接触面的6个点进行点焊，可适用于较多差速器总成上，使用1.3mm的铁镍合金焊丝，可使焊接过程更加牢固。Spot welding the 6 points of the contact surface of the
实施例4Example 4
本实施例与实施例1的不同之处在于，步骤(4)中，采用焊丝填充机构将1.5mm的铁镍合金焊丝填充到差速器壳体2和差速器齿轮1的轴向接触面缝隙中，对差速器壳体2和差速器齿轮1的接触面均匀分成8个点进行点焊。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
对差速器壳体2和差速器齿轮1的接触面的8个点进行点焊，满足尺寸较大的差速器总成，使用1.5mm的铁镍合金焊丝，可将尺寸较大的差速器总成更加牢固的焊接。Spot welding of 8 points of the contact surface of the
实施例5Example 5
本实施例与实施例1的不同之处在于，步骤(5)和步骤(6)中，焊接的位置位于差速器齿轮1和差速器壳体2的径向接触面；所述齿轮与壳体焊接处的焊缝3深度为6±0.5mm。The present embodiment is different from
利用本实施例的焊接工艺所制造的差速器总成如图3、图4所示。The differential assembly manufactured by the welding process of this embodiment is shown in FIGS. 3 and 4.
以上所述的仅是本发明的实施例，方案中公知的具体结构及特性等常识在此未作过多描述。应当指出，对于本领域的技术人员来说，在不脱离本发明方案的前提下，还可以作出若干变形和改进，这些也应该视为本发明的保护范围，这些都不会影响本发明实施的效果和专利的实用性。The above description is only the embodiments of the present invention, and common knowledge of specific structures and characteristics well known in the schemes is not described herein. It should be noted that a number of variations and modifications may be made by those skilled in the art without departing from the scope of the invention, and these should also be regarded as the scope of the invention, which does not affect the practice of the invention. The effectiveness of the effect and patents.
Claims (8)
如权利要求2所述的一种差速器总成的焊接工艺，其特征在于，步骤(5)中通过夹具将差速器壳体和差速器齿轮夹持，使用激光束围绕焊缝走一圈，溶解铁镍合金的焊丝，将差速器齿轮和差速器壳体焊接固定。 [Correct according to Rule 91 19.04.2019]
A welding process for a differential assembly according to claim 2, wherein in step (5), the differential housing and the differential gear are clamped by a clamp, and the laser beam is used to surround the weld. In one turn, the iron-nickel alloy wire is dissolved, and the differential gear and the differential case are welded and fixed.
如权利要求3所述的一种差速器总成的焊接工艺，其特征在于，步骤(5)和步骤(6)中，焊接的位置位于差速器齿轮和差速器壳体的轴向接触面。[Correct according to Rule 91 19.04.2019]
A welding process for a differential assembly according to claim 3, wherein in the steps (5) and (6), the position of the welding is in the axial direction of the differential gear and the differential case Contact surfaces.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
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| DE112019000066.7T DE112019000066T5 (en) | 2018-03-30 | 2019-03-29 | Welding process for a differential assembly |
| JP2020519176A JP2020523201A (en) | 2018-03-30 | 2019-03-29 | Welding process of differential assembly |
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| CN201810295642.7A CN108500576A (en) | 2018-03-30 | 2018-03-30 | A kind of welding procedure of differential assembly |
| CN201810295642.7 | 2018-03-30 |
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| WO2019185059A1 true WO2019185059A1 (en) | 2019-10-03 |
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| PCT/CN2019/080629 Ceased WO2019185059A1 (en) | 2018-03-30 | 2019-03-29 | Welding process for differential assembly |
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| CN110939710A (en) * | 2019-12-30 | 2020-03-31 | 四川众友机械有限责任公司 | A shaft hole sealing structure and processing technology of a differential gear side gear |
| CN118934930A (en) * | 2024-08-21 | 2024-11-12 | 东实精工齿轮(武汉)有限公司 | A differential assembly and its production process |
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| CN108500576A (en) * | 2018-03-30 | 2018-09-07 | 重庆联豪科技有限公司 | A kind of welding procedure of differential assembly |
| 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 (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 |
| CN115971652A (en) * | 2022-12-16 | 2023-04-18 | 平高集团有限公司 | A kind of aluminum alloy busbar conductor and its manufacturing method |
| CN115945786A (en) * | 2022-12-16 | 2023-04-11 | 平高集团有限公司 | A switchgear aluminum alloy shell and its manufacturing method |
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| JP2020523201A (en) | 2020-08-06 |
| CN108500576A (en) | 2018-09-07 |
| DE112019000066T5 (en) | 2020-02-27 |
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