CN111570993A - Manufacturing method of water-cooled shell of driving force system of electric automobile - Google Patents
Manufacturing method of water-cooled shell of driving force system of electric automobile Download PDFInfo
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- CN111570993A CN111570993A CN202010312255.7A CN202010312255A CN111570993A CN 111570993 A CN111570993 A CN 111570993A CN 202010312255 A CN202010312255 A CN 202010312255A CN 111570993 A CN111570993 A CN 111570993A
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- Prior art keywords
- shell
- main shaft
- driving force
- fixing mechanism
- manufacturing
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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
-
- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a method for manufacturing a water-cooled shell of a driving force system of an electric automobile, and relates to the technical field of manufacturing of the driving force system; the method comprises the following steps: step a: fixing the shell on the workbench by using a fixing mechanism; step b: embedding the inner shell into the outer shell; step c: fixing the lower end of the inner shell and the lower end of the outer shell by using a second fixing mechanism; step d: performing friction stir welding on the upper end gaps of the inner shell and the outer shell; step e: loosening the second fixing mechanism; step f: friction stir welding is carried out on the lower end gaps of the inner shell and the outer shell; step g: and releasing the fixing mechanism. The invention provides a manufacturing method of a water-cooled shell of a driving force system of an electric automobile, which has the advantage of environmental protection.
Description
Technical Field
The invention belongs to the technical field of manufacturing of driving force systems, and particularly relates to a method for manufacturing a water-cooled shell of a driving force system of an electric automobile.
Background
When the existing shell is manufactured, the shell is welded by utilizing various welding processes, such as gas welding, arc welding, electroslag welding and the like, and the manufacturing process of the shell causes pollution to the environment and is not environment-friendly.
Disclosure of Invention
The invention aims to overcome the defect that the prior art is not environment-friendly, and provides a manufacturing method of a water-cooling shell of a driving force system of an electric automobile, which has the advantage of environmental protection.
In order to achieve the purpose, the invention adopts the following technical scheme:
a manufacturing method of a water-cooled shell of an electric automobile driving force system comprises the following steps:
step a: fixing the shell on the workbench by using a fixing mechanism; step b: embedding the inner shell into the outer shell; step c: fixing the lower end of the inner shell and the lower end of the outer shell by using a second fixing mechanism; step d: performing friction stir welding on the upper end gaps of the inner shell and the outer shell; step e: loosening the second fixing mechanism; step f: friction stir welding is carried out on the lower end gaps of the inner shell and the outer shell; step g: and releasing the fixing mechanism. The friction stir welding technology is adopted, the friction stir welding belongs to low-temperature solid state welding, base materials in a welding area are not melted, and thermal stress generated by welding is low. The method has the advantages of low energy consumption, no pollution, high production efficiency, high yield, high welding consistency, very few welding defects, closer welding strength to a parent material and high welding fatigue strength. Meanwhile, when welding, the upper end gap is welded firstly, and when welding, the second fixing mechanism is used for fixing, so that the inner shell and the outer shell are prevented from moving in a staggered manner, and when the lower end gap is welded, the second fixing mechanism is withdrawn.
Preferably, the fixing mechanism in the step a comprises a rotating shaft penetrating through the workbench, a pressing plate fixedly connected to the upper end of the rotating shaft and used for pressing the outer edge of the shell onto the workbench, an air cylinder output shaft with the upper end rotatably connected to the lower end of the rotating shaft, and a sliding block fixedly connected to one side of the rotating shaft, wherein a spiral guide groove is formed in the workbench, and the sliding block is slidably connected in the guide groove. Utilize the clamp plate to fix the shell, when the pivot upward movement, the clamp plate is rotatory to the shell is taken off to the convenience from the workstation.
Preferably, the second fixing mechanism in the step c comprises a main shaft, a plurality of support legs, foot plates, a pull rod and a cylinder, wherein the upper end of the main shaft penetrates through the workbench and then is positioned in the inner shell, the upper ends of the support legs are hinged to the main shaft, the foot plates are positioned at the lower ends of the support legs and used for extruding the lower ends of the inner shell and the outer shell, the pull rod is used for supporting the support legs; one end of the pull rod is connected to the support leg, and the other end of the pull rod is connected to the main shaft in a sliding mode; the second fixing mechanism further comprises a second cylinder for connecting the sliding pull rod to one end of the main shaft so as to realize opening and closing of the support legs. The structure is simple.
Preferably, a sliding groove coaxial with the main shaft is formed in the main shaft, the output shaft of the second air cylinder is inserted into the sliding groove, a plurality of guide grooves are formed in the main shaft, connecting blocks are connected in the guide grooves in a sliding mode, one end, close to the main shaft, of the pull rod is hinged to the connecting blocks, the connecting blocks are fixedly connected to the output shaft of the second air cylinder, and a plurality of accommodating grooves used for accommodating the supporting legs and the foot plates are formed in the main shaft. The structure is simple.
Preferably, the lower end of the foot plate is located above the lower end gap, the middle of the foot plate is rotatably connected with the support legs, a coil spring which enables the foot plate to be horizontal when the support legs are opened is arranged between the foot plate and the support legs, and one end, close to the main shaft, of the foot plate is rotatably connected with a roller which reduces friction force between the main shaft and the foot plate when the foot plate is stored into the storage groove. The structure is simple.
Preferably, the main shaft is fitted to the rotating shaft hole of the housing. When the lower end gap is welded, the spindle has a certain limiting effect on the shell.
Preferably, the legs are arranged in an annular array centered on the axis of the main shaft, the number of legs being equal to or greater than three.
The fixing effect is good.
The invention has the beneficial effects that: the invention provides a manufacturing method of a water-cooled shell of a driving force system of an electric automobile, which has the advantage of environmental protection; adopt fixed establishment and second fixed establishment to fix shell and inner shell simultaneously, it is effectual to weld.
Drawings
FIG. 1 is a schematic illustration of an outer shell and an inner shell;
FIG. 2 is a schematic view of the inner shell after being placed in the outer shell;
FIG. 3 is a schematic view of the fixing mechanism and a second fixing mechanism fixing the housing;
FIG. 4 is a schematic view of the stand bar when folded;
FIG. 5 is a schematic view of the securing mechanism when released;
FIG. 6 is a schematic view of a welding path of an upper end gap;
fig. 7 is a schematic view of a welding path of the lower end slit.
In the figure:
the device comprises an inner shell 1, an outer shell 2, an upper end gap 3, a workbench 4, a lower end gap 5, a rotating shaft 6, a pressing plate 7, a cylinder output shaft 8, a sliding block 9, a guide groove 10, a main shaft 11, a supporting leg 12, a foot plate 13, a pull rod 14, a cylinder 15, a second cylinder 16, a sliding groove 17, a guide groove 19, a containing groove 20, a connecting block 21, a rotating shaft hole 22, a roller 23, a side wall 24, a flanging 25 and a protrusion 26.
Detailed Description
The invention is explained in further detail below with reference to the figures and the detailed description:
example (b):
referring to fig. 1 to 5, a method for manufacturing a water-cooled housing of a driving force system of an electric vehicle includes the following steps:
step a: the shell 2 is fixed on the workbench 4 by a fixing mechanism;
step b: embedding the inner shell 1 into the outer shell 2;
step c: fixing the lower end of the inner shell 1 and the lower end of the outer shell 2 by using a second fixing mechanism, so that a circle of upper end gap 3 is formed between the upper end of the inner shell 1 and the upper end of the outer shell 2, and a circle of lower end gap 5 is formed between the lower end of the inner shell 1 and the lower end of the outer shell 2;
step d: carrying out friction stir welding on the upper end gaps 3 of the inner shell 1 and the outer shell 2;
step e: loosening the second fixing mechanism;
step f: friction stir welding is carried out on a lower end gap 5 of the inner shell 1 and the outer shell 2;
step g: and releasing the fixing mechanism.
The fixing mechanism in the step a comprises a rotating shaft 6 penetrating through the workbench 4, a pressing plate 7 fixedly connected to the upper end of the rotating shaft 6 and used for extruding the outer edge of the shell 2 onto the workbench 4, a cylinder output shaft 8 with the upper end rotatably connected with the lower end of the rotating shaft 6, and a sliding block 9 fixedly connected to one side of the rotating shaft 6, wherein a spiral guide groove 10 is formed in the workbench 4, and the sliding block 9 is slidably connected into the guide groove 10.
The second fixing mechanism in the step c comprises a main shaft 11, the upper end of which penetrates through the workbench 4 and is positioned in the inner shell 1, a plurality of support legs 12, foot plates 13, a pull rod 14 and a cylinder 15, wherein the upper ends of the support legs are hinged on the main shaft 11, the foot plates 13 are positioned at the lower ends of the support legs 12 and are used for extruding the lower ends of the inner shell 1 and the outer shell 2, the pull rod 14 is used for supporting the support legs 12; one end of the pull rod 14 is connected to the support leg 12, and the other end of the pull rod 14 is slidably connected to the main shaft 11; the supporting feet 12 are arranged in an annular array by taking the axis of the main shaft 11 as the center, and the number of the supporting feet 12 is more than or equal to three; the second fixing mechanism also comprises a second air cylinder 16 which is used for connecting one end of the sliding pull rod 14 on the main shaft 11 so as to realize the opening and closing of the supporting leg 12; a sliding groove 17 coaxial with the main shaft 11 is formed in the main shaft 11, an output shaft of the second air cylinder 16 is inserted into the sliding groove 17, a plurality of guide grooves 19 are formed in the main shaft 11, connecting blocks 21 are connected in the guide grooves 19 in a sliding mode, one end, close to the main shaft 11, of the pull rod 14 is hinged to the connecting blocks, the connecting blocks are fixedly connected to the output shaft of the second air cylinder 16, and a plurality of accommodating grooves 20 used for accommodating the support legs 12 and the foot plates 13 are formed in the main shaft 11; the main shaft 11 is matched with the rotating shaft hole 22 of the shell 2; the lower end of the foot plate 13 is positioned above the lower end gap 5, the middle part of the foot plate 13 is rotatably connected with the supporting leg 12, a coil spring which enables the foot plate 13 to keep horizontal when the supporting leg 12 is opened is arranged between the foot plate 13 and the supporting leg 12, and one end of the foot plate 13 close to the main shaft 11 is rotatably connected with a roller 23 which reduces the friction force between the main shaft 11 and the foot plate 13 when the foot plate 13 is stored into the storage groove 20.
Principle of embodiment:
the existing shell is provided with a rotating shaft hole 22.
The inner shell 1 comprises a side wall 24 and an inwardly turned flange 25 at the lower end of the side wall 24, the flange 25 cooperating with a protrusion 26 on the inner lower side of the outer shell 2 to form a lower end gap 5.
When the leg plate 13 fixes the inner case 1 and the outer case 2, the leg plate 13 abuts against the upper sides of the burring 25 and the projection 26.
In this embodiment, the inner shell 1 and the outer shell 2 are welded by a friction stir welding process, and the production efficiency is high.
Firstly, welding an upper end gap 3, fixing the outer shell 2 by using a fixing mechanism during welding, and fixing the inner shell 1 and the outer shell 2 by using a second fixing mechanism simultaneously so as to prevent the inner shell 1 and the outer shell 2 from rotating relatively during welding the upper end; the upper end gap 3 is then welded.
After the upper end gap 3 is welded, the inner shell 1 and the outer shell 2 cannot rotate relatively, and at the moment, only the fixing mechanism needs to be fixed; at this time, the main shaft 11 rises, the foot plate 13 is disengaged from the flanging 25 and the protrusion 26, then the connecting block 21 moves upwards, the pull rod 14 rotates, the pull rod 14 drives the foot 12 to rotate, the foot 12 finally rotates towards the main shaft 11, when the roller 23 abuts against the main shaft 11, one end of the foot plate 13 facing the main shaft 11 can rotate upwards under the action of the roller 23, and finally, the foot plate 13, the foot 12 and the pull rod 14 are all located in the accommodating groove 20. The lower end slit 5 is then welded. It should be noted that the spindle 11 plays a certain limiting role for the housing 2.
After the lower end gap 5 is welded, the air cylinder 15 operates, the main shaft 11 descends, the main shaft 11 leaves from the shell 2, then the air cylinder output shaft 8 moves upwards, the sliding block 9 moves along the guide groove 10, and the guide groove 10 is spiral, so that the rotating shaft 6 rotates and moves upwards at the same time, the pressing plate 7 rotates to one side of the rotating shaft 6, which is far away from the shell 2, and meanwhile, the pressing plate 7 is separated from the shell 2, so that the welded shell can be taken away from the workbench 4 conveniently.
Referring to fig. 6, when the friction stir welding tool bit is used for welding an upper end gap, the tool bit is withdrawn outwards at a bolt hole (a bolt hole is used for fixedly connecting an end cover, which is mature in the prior art) when a circle of welding is finished.
Referring to fig. 7, when the friction stir welding tool bit is used for welding a lower end gap, the tool bit is retracted inwards after one circle of welding.
Claims (7)
1. A manufacturing method of a water-cooled shell of a driving force system of an electric automobile is characterized by comprising the following steps:
step a: fixing the shell on the workbench by using a fixing mechanism;
step b: embedding the inner shell into the outer shell;
step c: fixing the lower end of the inner shell and the lower end of the outer shell by using a second fixing mechanism;
step d: performing friction stir welding on the upper end gaps of the inner shell and the outer shell;
step e: loosening the second fixing mechanism;
step f: friction stir welding is carried out on the lower end gaps of the inner shell and the outer shell;
step g: and releasing the fixing mechanism.
2. The method for manufacturing the water-cooled casing of the driving force system of the electric automobile according to claim 1, wherein the fixing mechanism in the step a comprises a rotating shaft penetrating through the workbench, a pressing plate fixedly connected to the upper end of the rotating shaft and used for pressing the outer edge of the casing onto the workbench, an air cylinder output shaft with the upper end rotatably connected with the lower end of the rotating shaft, and a sliding block fixedly connected to one side of the rotating shaft, a spiral guide groove is formed in the workbench, and the sliding block is slidably connected in the guide groove.
3. The manufacturing method of the water-cooled machine shell of the driving force system of the electric automobile according to claim 1, wherein the second fixing mechanism in the step c comprises a main shaft, a plurality of support legs, foot plates, a pull rod and a cylinder, wherein the main shaft is positioned in the inner shell after the upper end of the main shaft penetrates through the workbench, the upper ends of the support legs are hinged to the main shaft, the foot plates are positioned at the lower ends of the support legs and used for extruding the lower ends of the inner shell and the outer shell, the pull rod;
one end of the pull rod is connected to the support leg, and the other end of the pull rod is connected to the main shaft in a sliding mode;
the second fixing mechanism further comprises a second cylinder for connecting the sliding pull rod to one end of the main shaft so as to realize opening and closing of the support legs.
4. The manufacturing method of the water-cooled casing of the driving force system of the electric automobile according to claim 3, wherein a sliding groove coaxial with the main shaft is formed in the main shaft, the output shaft of the second cylinder is inserted into the sliding groove, a plurality of guide grooves are formed in the main shaft, a connecting block is connected in the guide grooves in a sliding mode, one end, close to the main shaft, of the pull rod is hinged to the connecting block, the connecting block is fixedly connected to the output shaft of the second cylinder, and a plurality of accommodating grooves for accommodating the supporting legs and the foot plates are formed in the main shaft.
5. The manufacturing method of the water-cooled machine shell of the driving force system of the electric automobile according to claim 4, characterized in that the lower end of the foot plate is located above the lower end gap, the middle part of the foot plate is rotatably connected with the support leg, a coil spring for keeping the foot plate horizontal when the support leg is opened is arranged between the foot plate and the support leg, and one end of the foot plate close to the main shaft is rotatably connected with a roller for reducing friction force between the main shaft and the foot plate when the foot plate is received in the receiving groove.
6. The manufacturing method of the water-cooled machine shell of the driving force system of the electric automobile according to claim 4, characterized in that the spindle is matched with a spindle hole of the shell.
7. The manufacturing method of the water-cooled machine shell of the driving force system of the electric automobile according to claim 1, wherein the supporting legs are arranged in an annular array by taking the shaft of the main shaft as a center, and the number of the supporting legs is more than or equal to three.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312255.7A CN111570993B (en) | 2020-04-20 | 2020-04-20 | Manufacturing method of water-cooled shell of driving force system of electric automobile |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010312255.7A CN111570993B (en) | 2020-04-20 | 2020-04-20 | Manufacturing method of water-cooled shell of driving force system of electric automobile |
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| Publication Number | Publication Date |
|---|---|
| CN111570993A true CN111570993A (en) | 2020-08-25 |
| CN111570993B CN111570993B (en) | 2021-04-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010312255.7A Active CN111570993B (en) | 2020-04-20 | 2020-04-20 | Manufacturing method of water-cooled shell of driving force system of electric automobile |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033501A (en) * | 1976-06-09 | 1977-07-05 | United Technologies Corporation | Friction welding machine |
| CN202910492U (en) * | 2012-08-07 | 2013-05-01 | 首都航天机械公司 | Positioning and supporting device for stirring, rubbing and welding |
| CN206898581U (en) * | 2017-05-09 | 2018-01-19 | 天津市庚信达铝业有限公司 | A kind of fixture for water cooling motor housing water channel agitating friction welding annular |
| CN108462319A (en) * | 2018-03-14 | 2018-08-28 | 深圳派赛科技有限公司 | A kind of water cooling casing |
| CN110497132A (en) * | 2019-09-04 | 2019-11-26 | 中国航发南方工业有限公司 | Cydariform thin-wall part welding method and its device |
| CN209709831U (en) * | 2019-04-04 | 2019-11-29 | 常州市江南三翔电机有限公司 | A kind of water-cooled jacketed muffle motor case |
| CN110846491A (en) * | 2019-11-06 | 2020-02-28 | 中国石油大学(华东) | Self-adaptive hydraulic supporting device for restraining deformation of shell |
-
2020
- 2020-04-20 CN CN202010312255.7A patent/CN111570993B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4033501A (en) * | 1976-06-09 | 1977-07-05 | United Technologies Corporation | Friction welding machine |
| CN202910492U (en) * | 2012-08-07 | 2013-05-01 | 首都航天机械公司 | Positioning and supporting device for stirring, rubbing and welding |
| CN206898581U (en) * | 2017-05-09 | 2018-01-19 | 天津市庚信达铝业有限公司 | A kind of fixture for water cooling motor housing water channel agitating friction welding annular |
| CN108462319A (en) * | 2018-03-14 | 2018-08-28 | 深圳派赛科技有限公司 | A kind of water cooling casing |
| CN209709831U (en) * | 2019-04-04 | 2019-11-29 | 常州市江南三翔电机有限公司 | A kind of water-cooled jacketed muffle motor case |
| CN110497132A (en) * | 2019-09-04 | 2019-11-26 | 中国航发南方工业有限公司 | Cydariform thin-wall part welding method and its device |
| CN110846491A (en) * | 2019-11-06 | 2020-02-28 | 中国石油大学(华东) | Self-adaptive hydraulic supporting device for restraining deformation of shell |
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| CN111570993B (en) | 2021-04-06 |
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Address after: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee after: Zhejiang Zero run Technology Co.,Ltd. Address before: 310051 1st and 6th floors, no.451 Internet of things street, Binjiang District, Hangzhou City, Zhejiang Province Patentee before: ZHEJIANG LEAPMOTOR TECHNOLOGY Co.,Ltd. |