WO2020006806A1 - 电机壳体冷却水道密封焊接方法 - Google Patents

电机壳体冷却水道密封焊接方法 Download PDF

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Publication number
WO2020006806A1
WO2020006806A1 PCT/CN2018/099210 CN2018099210W WO2020006806A1 WO 2020006806 A1 WO2020006806 A1 WO 2020006806A1 CN 2018099210 W CN2018099210 W CN 2018099210W WO 2020006806 A1 WO2020006806 A1 WO 2020006806A1
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Prior art keywords
welding
water channel
sealing
cooling water
channel
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PCT/CN2018/099210
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English (en)
French (fr)
Inventor
余平
靳海涛
凌新亮
余志明
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Jing Jin Electric Technologies Beijing Co Ltd
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Jing Jin Electric Technologies Beijing Co Ltd
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Priority to JP2021520257A priority Critical patent/JP7228687B2/ja
Priority to US17/252,987 priority patent/US20210114135A1/en
Priority to EP18925574.8A priority patent/EP3789155B1/en
Publication of WO2020006806A1 publication Critical patent/WO2020006806A1/zh
Anticipated expiration legal-status Critical
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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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/122—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding
    • B23K20/1245—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding using a non-consumable tool, e.g. friction stir welding characterised by the apparatus
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/12—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding
    • B23K20/129—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating the heat being generated by friction; Friction welding specially adapted for particular articles or work
    • 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
    • B23K20/00—Non-electric welding by applying impact or other pressure, with or without the application of heat, e.g. cladding or plating
    • B23K20/26—Auxiliary equipment
    • 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
    • B23K2101/06—Tubes
    • 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
    • B23K2101/14—Heat exchangers

Definitions

  • the invention belongs to the technical field of welding, and particularly relates to a sealing welding method for a cooling channel of a motor casing.
  • a water channel structure of a motor casing As shown in Figure 1-2, the water channel structure is a coolant moving along the axial direction of the motor casing 1, folded back at the end, in the form of an S-shape (according to FIG. 1 of the specification. (OK) Flow through the motor casing 1 for a week.
  • This water channel structure uses a welded extruded casing, and the water channel turning channel 32 is machined at the end, and the two ends of the motor casing 1 are respectively
  • the sealing end ring (filling member 2) is used to ensure the sealing of the water channel by welding.
  • an object of the present invention is to provide a sealing welding method for a cooling channel of a motor casing, so as to solve the problems of low working efficiency, poor stability, and long welding time in the existing welding methods.
  • a method for sealing and welding a cooling channel of a motor casing includes the following steps:
  • a sealing groove is processed in the circumferential direction at the end of the motor casing, the sealing groove is located outside the turning passage, and the packing member is placed in the sealing groove.
  • the bottom of the sealing groove is provided with a support surface for supporting the filler.
  • the sealing groove is an annular groove
  • a packing member placed in the annular groove is a packing ring, and each of the turning channels is sealed by the packing ring.
  • the sealing grooves are a plurality of arc-shaped grooves located on the same circumference and corresponding to the turning channels, respectively, and the packing pieces placed in the arc-shaped grooves are packing pieces of arc-shaped structure.
  • the present invention uses a large diameter stirring head to fully stir the filler and the surrounding solder at one time, that is, the single welding method is used for welding, so that one circle can complete the welding, which is more than the original double Welding form has high efficiency and good stability, and the welding time is reduced by 1/2 to 1/3.
  • FIG. 1 is a structural schematic diagram of a water channel structure of a motor housing
  • Figure 2 is a sectional view of a motor housing
  • FIG. 3 is a schematic view of a welding manner of an existing water channel structure
  • FIG. 5 is a schematic view of a sealing welding manner of a cooling water passage of a motor casing according to the present invention
  • FIG. 6 is an enlarged view at II in FIG. 5; FIG.
  • FIG. 7 is a schematic structural diagram of a motor housing end sealed by a packing ring in the present invention.
  • FIG. 8 is a schematic structural diagram of a motor housing end sealed by a packing block in the present invention.
  • 1 is the motor casing
  • 2 is the packing
  • 3 is the cooling water channel
  • 31 is the axial water channel
  • 32 is the turning channel
  • 4 is the water inlet
  • 5 is the water outlet
  • 6 is the packing block
  • 7 is the packing ring.
  • 8 is a friction stir welding head
  • 9 is a weld seam I
  • 10 is a weld seam II.
  • the water channel structure of the motor casing is that the coolant moves in the axial direction, is folded back at the end, and flows through the motor casing in a circle in an S shape.
  • the two ends of the motor casing are respectively welded with two sealed end rings. Way to ensure the sealing of the watercourse.
  • the traditional welding method is to sequentially weld the welds on both sides of the sealed end ring, and adopt the double-weld welding method. This welding method has the problems of low work efficiency, poor stability and long welding time.
  • the friction stir welding adopted by the present invention can also be used for sealing water channel welding in the form of fillers, and the fillers can be filled at once by using a larger stirring head
  • the parts and the surrounding solder are fully stirred, that is, single-weld welding is used, so that the circumference can be completed with only one weld, which is more efficient than the original two-weld welding form (welding along the contour of the sealed end ring).
  • a method for sealing and cooling a cooling channel of a motor casing includes the following steps:
  • the stirrer 8 is used to stir the filler 2 and the surrounding motor casing solder sufficiently to perform single-weld welding.
  • step 1) a sealing groove is first processed in an end portion of the motor housing 1 in a circumferential direction, the sealing groove is located outside the turning channel 32 of the cooling water channel, and the packing member 2 is placed in the sealing groove.
  • a supporting surface for supporting the packing member 2 is provided at the bottom of the sealing groove, the purpose of which is to limit the position of the welding packing member 2 and provide support for the packing member 2 during welding, thereby satisfying the welding process.
  • the sealing groove is an annular groove
  • the packing member 2 placed in the annular groove is a packing ring 7, as shown in FIG. 7.
  • Each of the turning channels 32 is sealed by a packing ring 7 so that the cooling water channel forms a complete S-shaped sealed channel.
  • the packing ring 7 is fully stirred with the surrounding motor housing, and single-weld welding is performed to ensure the tightness of the cooling water channel and avoid leakage of the cooling liquid.
  • the sealing groove is a plurality of arc-shaped grooves located on the same circumference and corresponding to each of the turning channels 32, and the packing member 2 placed in each arc-shaped groove is a packing block of an arc structure. 6.
  • Such different welding shapes can be better applied to shells with different cross-sectional shapes, as shown in FIG. 8.
  • Each turning channel 32 is sealed by a plurality of packing blocks 6 so that the cooling water channel forms a complete S-shaped sealed channel.
  • the friction stir welding stirrer 8 stirs each filler block 6 and the surrounding motor casing solder sufficiently, and performs single-weld welding to ensure the tightness of the cooling water channel and avoid leakage of the cooling liquid.
  • Two holes are machined on the outer surface of the motor casing 1 to communicate with the inlet and outlet of the cooling water channel, respectively, to form the water inlet 4 and the water outlet 5, so that the coolant can circulate and circulate to achieve the purpose of cooling the motor casing.
  • the purpose of the present invention is to weld packing rings or packing blocks at both ends of the motor casing in order to seal the open turning channel at the end of the cooling water channel, form a complete S-shaped water channel, and prevent the coolant from overflowing.
  • the invention uses a large diameter stirring head to fully stir the filler ring and surrounding solder at one time, that is, welding using a single welding method, so that one circle can complete welding, which is more efficient and stable than the original double welding method.
  • the welding time is reduced by 1/2 to 1/3.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)
  • Manufacture Of Motors, Generators (AREA)
  • Motor Or Generator Frames (AREA)
  • Pressure Welding/Diffusion-Bonding (AREA)

Abstract

一种电机壳体冷却水道密封焊接方法，包括以下步骤：1)在电机壳体（1）端部通过填料件（2）密封冷却水道（3）的敞开式的转折通道（32），使冷却水道（3）形成的S字形密封通道；2)通过搅拌摩擦焊搅拌头（8）将所述填料件（2）与周边的电机壳体（1）焊料充分搅拌，进行单焊缝方式焊接。该焊接方法利用直径较大的搅拌头一次性将填料件与周边焊料充分搅拌，采用单焊缝方式焊接，一个圆周完成焊接，效率高，稳定性好，焊接时间减少1/2至1/3。

Description

电机壳体冷却水道密封焊接方法 技术领域
本发明属于焊接技术领域，特别涉及一种电机壳体冷却水道密封焊接方法。
发明背景
电机在使用时会产生大量的热量，若不及时排出电机壳体外部，集聚的热量而会造成电机烧坏。一种电机壳体的水道结构，如图1-2所示，水道结构是冷却液沿电机壳体1的轴向移动，在端部折回，以S字形形式(依据说明书附图1可以确定)流经电机壳体1一周，这种水道结构采用焊接用挤压式壳体，在端部用机加工的方式加工出水道转折通道32，在电机壳体1的两端部分别用密封端环(填料件2)通过焊接的方式保证水道的密封。
传统的搅拌摩擦焊多用于拼缝焊接，对密封端环(填料件2)两侧的焊缝依次进行焊接，即采用双焊缝焊接形式，沿密封端环(填料件2)轮廓进行焊接，如图3-4所示。这种焊接方式，存在工作效率低，稳定性差，焊接时间较长的问题。
发明内容
针对上述问题，本发明的目的在于提供一种电机壳体冷却水道密封焊接方法，以解决现有焊接方式存在工作效率低，稳定性差，焊接时间较长的问题。
为了实现上述目的，本发明采用以下技术方案：
一种电机壳体冷却水道密封焊接方法，所述方法包括以下几个步骤：
1)在电机壳体端部通过填料件密封冷却水道的敞开式的转折通道，使冷却水道形成的S字形密封通道；
2)通过搅拌摩擦焊搅拌头将所述填料件与周边的电机壳体焊料充分搅拌，进行单焊缝方式焊接。
优选地，在所述步骤1)中，在电机壳体端部沿周向加工密封槽，所述密封槽位于所述转折通道的外侧，所述填料件放置于所述密封槽内。
优选地，所述密封槽的底部设有用于支撑所述填料件的支撑面。
优选地，所述密封槽为环形槽，放置于所述环形槽内的填料件为填料环，通过所述填料环密封各所述转折通道。
优选地，所述密封槽为位于同一圆周上且分别与各所述转折通道相对应的多个 弧形槽，放置于所述弧形槽内的填料件为弧形结构的填料块。
本发明的优点及有益效果是：本发明利用直径较大的搅拌头一次性将填料件与周边焊料充分搅拌，即采用单焊缝方式焊接，这样一个圆周即可完成焊接，较原有的双焊缝焊接形式效率高，稳定性好，焊接时间减少1/2至1/3。
附图简要说明
图1为电机壳体的水道结构的结构示意图；
图2为电机壳体的的剖视图；
图3为现有水道结构焊接方式示意图；
图4为图3中I处放大图；
图5为本发明电机壳体冷却水道的密封焊接方式示意图；
图6为图5中II处放大图；
图7为本发明中电机壳体端部通过填料环密封的结构示意图；
图8为本发明中电机壳体端部通过填料块密封的结构示意图。
图中：1为电机壳体，2为填料件，3为冷却水道，31为轴向水道，32为转折通道，4为进水口，5为出水口，6为填料块，7为填料环，8为搅拌摩擦焊搅拌头，9为焊缝Ⅰ，10为焊缝Ⅱ。
实施本发明的方式
电机壳体的水道结构是冷却液沿轴向移动，在端部折回，以S字形形式流经电机壳体的一周，电机壳体的两端部分别用两个密封端环通过焊接的方式保证水道的密封。传统焊接方式是对密封端环两侧的焊缝依次进行焊接，采用双焊缝焊接形式，这种焊接方式，存在工作效率低，稳定性差，焊接时间较长的问题。
针对现有双焊缝焊接形式存在工作效率低，稳定性差，焊接时间较长的问题，本发明采用的搅拌摩擦焊也可用于填料形式的密封水道焊接，利用更大的搅拌头一次性将填料件与周边焊料充分搅拌，即采用单焊缝方式焊接，这样一个圆周即可完成焊接，只有一个焊缝，较原有的双焊缝焊接形式(沿密封端环轮廓进行焊接)，效率高，稳定性好，焊接时间减少1/2至1/3。
为了使本发明的目的、技术方案和优点更加清楚，下面结合附图和具体实施例对本发明进行详细描述。
如图5-6所示，一种电机壳体冷却水道密封焊接方法，所述方法包括以下几个 步骤：
1)在电机壳体1的端部通过填料件2密封冷却水道端部的敞开式的各转折通道32部分，使冷却水道形成的S字形密封通道；
2)通过搅拌摩擦焊搅拌头8将填料件2与周边的电机壳体焊料充分搅拌，进行单焊缝方式焊接。
进一步地，在步骤1)中，首先在电机壳体1的端部沿周向加工密封槽，密封槽位于冷却水道的转折通道32的外侧，填料件2放置于密封槽内。
进一步地，所述密封槽的底部设有用于支撑填料件2的支撑面，目的是限制焊接填料件2的位置，并提供焊接时对填料件2的支撑，从而满足焊接工艺。
本发明的一实施例中，密封槽为环形槽，放置于所述环形槽内的填料件2为一填料环7，如图7所示。通过一个填料环7密封各转折通道32，使冷却水道形成完整的S字形密封通道。通过搅拌摩擦焊搅拌头8将填料环7与周边的电机壳体充分搅拌，进行单焊缝方式焊接，保证冷却水道的密封性避免冷却液外漏。
本发明的另一实施例中，密封槽为位于同一圆周上且分别与各转折通道32相对应的多个弧形槽，放置于各弧形槽内的填料件2为弧形结构的填料块6，这样不同的焊接形状，可以更好的适用于不同截面形状的壳体，如图8所示。通过多个填料块6将各转折通道32密封，使冷却水道形成完整的S字形密封通道。通过搅拌摩擦焊搅拌头8将各填料块6与周边的电机壳体焊料充分搅拌，进行单焊缝方式焊接，保证冷却水道的密封性避免冷却液外漏。
在电机壳体1的外表面加工两个孔，分别与冷却水道的入口和出口相通，形成进水口4和出水口5，使冷却液能够进行循环流通，达到冷却电机壳体的目的。
本发明在电机壳体的两端焊接填料环或填料块的目的是为了密封冷却水道端部的敞开式的转折通道，形成完整的S形水道，防止冷却液外溢。
本发明利用直径较大的搅拌头一次性将填料环与周边焊料充分搅拌，即采用单焊缝方式焊接，这样一个圆周即可完成焊接，较原有的双焊缝焊接形式效率高，稳定性好，焊接时间减少1/2至1/3。
以上所述仅为本发明的实施方式，并非用于限定本发明的保护范围。凡在本发明的精神和原则之内所作的任何修改、等同替换、改进、扩展等，均包含在本发明的保护范围内。

Claims (5)

  1. 一种电机壳体冷却水道密封焊接方法，其特征在于，所述方法包括以下几个步骤：
    1)在电机壳体端部通过填料件密封冷却水道的敞开式的转折通道，使冷却水道形成的S字形密封通道；
    2)通过搅拌摩擦焊搅拌头将所述填料件与周边的电机壳体焊料充分搅拌，进行单焊缝方式焊接。
  2. 根据权利要求1所述的焊接方法，其特征在于，
    在所述步骤1)中，在电机壳体端部沿周向加工密封槽，所述密封槽位于所述转折通道的外侧，所述填料件放置于所述密封槽内。
  3. 根据权利要求2所述的焊接方法，其特征在于，所述密封槽的底部设有用于支撑所述填料件的支撑面。
  4. 根据权利要求2所述的焊接方法，其特征在于，所述密封槽为环形槽，放置于所述环形槽内的填料件为填料环，通过所述填料环密封各所述转折通道。
  5. 根据权利要求2所述的焊接方法，其特征在于，所述密封槽为位于同一圆周上且分别与各所述转折通道相对应的多个弧形槽，放置于所述弧形槽内的填料件为弧形结构的填料块。
PCT/CN2018/099210 2018-07-02 2018-08-07 电机壳体冷却水道密封焊接方法 Ceased WO2020006806A1 (zh)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP2021520257A JP7228687B2 (ja) 2018-07-02 2018-08-07 モータハウジングの冷却水路の密封溶接方法
US17/252,987 US20210114135A1 (en) 2018-07-02 2018-08-07 Welding method for sealing cooling-water channel of electric-machine housing
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