CN115464248B - Double-drive differential backfill type friction stir spot welding main shaft - Google Patents
Double-drive differential backfill type friction stir spot welding main shaft Download PDFInfo
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- CN115464248B CN115464248B CN202211118184.2A CN202211118184A CN115464248B CN 115464248 B CN115464248 B CN 115464248B CN 202211118184 A CN202211118184 A CN 202211118184A CN 115464248 B CN115464248 B CN 115464248B
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- main shaft
- stirring pin
- spindle
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- 238000003756 stirring Methods 0.000 title claims abstract description 152
- 238000003466 welding Methods 0.000 title claims abstract description 46
- 230000002093 peripheral effect Effects 0.000 claims abstract description 12
- 238000003825 pressing Methods 0.000 claims description 8
- 230000001360 synchronised effect Effects 0.000 claims description 8
- 230000009977 dual effect Effects 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 description 9
- 229910052751 metal Inorganic materials 0.000 description 5
- 239000002184 metal Substances 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000033001 locomotion Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000012636 effector Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 229910000679 solder Inorganic materials 0.000 description 1
- 229920001169 thermoplastic Polymers 0.000 description 1
- 239000004416 thermosoftening plastic Substances 0.000 description 1
Classifications
-
- 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
- B23K20/122—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
- B23K20/125—Rotary tool drive mechanism
Abstract
The invention relates to a double-drive differential backfill type friction stir spot welding main shaft, which comprises: the stirring needle comprises a first main shaft shell, a second main shaft shell, a shaft shoulder mandrel and a stirring needle mandrel, wherein the shaft shoulder mandrel is arranged at one end of the first main shaft shell in the length direction, the stirring needle mandrel is rotatably sleeved in a central through hole of the first main shaft shell and the shaft shoulder mandrel, and the shaft shoulder mandrel is rotatably sleeved in a central through hole of the second main shaft shell; the outer peripheral ring of the shaft shoulder mandrel is connected with the inner peripheral ring of the second main shaft shell through a bearing, and the outer peripheral ring of the stirring needle mandrel is connected with the inner peripheral ring of the first main shaft shell through a bearing. The invention can realize the purpose of respectively driving the shoulder mandrel and the stirring needle mandrel to rotate by utilizing the two driving devices, and realizing the difference of the rotation speeds of the shoulder mandrel and the stirring needle mandrel.
Description
Technical Field
The invention relates to the technical field of material welding, in particular to a double-drive differential backfill type friction stir spot welding spindle.
Background
Backfill friction stir spot welding realizes the connection of the spot welding joint through the friction extrusion of a spot welding end effector to the welding metal and the plastic deformation heat production of the welding metal. The backfill type friction stir spot welding has the advantages of high welding quality, smooth welding spot surface, small deformation of the welded parts and the like.
Conventional backfill friction stir spot welding spindles typically consist of a three-layer structure: the pressing sleeve fixing layer, the shaft shoulder driving layer and the stirring pin driving layer. The compaction sleeve is positioned on the outermost layer, and has no rotation and no axial movement. The shaft shoulder drive is located the intermediate level, and the stirring needle drive is located the inlayer. The rotation motion of the shaft shoulder drive and the stirring pin drive is the same group of drive, and the shaft shoulder and the stirring pin drive axially move while rotating at high speed.
The conventional backfill type friction stir welding shaft shoulder and the stirring pin are driven by the same main shaft in rotation, and differential rotation of the shaft shoulder and the stirring pin cannot be realized.
Disclosure of Invention
(1) Technical problem to be solved
The embodiment of the invention provides a double-drive differential backfill type friction stir spot welding main shaft, which comprises the following components: the invention can realize the purpose of respectively driving the shaft shoulder mandrel and the stirring needle mandrel to rotate by utilizing two driving devices and realizing the difference of the rotation speeds of the shaft shoulder mandrel and the stirring needle mandrel.
(2) Technical proposal
The embodiment of the invention provides a double-drive differential backfill type friction stir spot welding spindle, which comprises the following components: the stirring needle comprises a first main shaft shell, a second main shaft shell, a shaft shoulder mandrel and a stirring needle mandrel, wherein the shaft shoulder mandrel is arranged at one end of the first main shaft shell in the length direction, the stirring needle mandrel is rotatably sleeved in a central through hole of the first main shaft shell and the shaft shoulder mandrel, and the shaft shoulder mandrel is rotatably sleeved in a central through hole of the second main shaft shell; the outer peripheral ring of the shaft shoulder mandrel is connected with the inner peripheral ring of the second main shaft shell through a bearing, and the outer peripheral ring of the stirring needle mandrel is connected with the inner peripheral ring of the first main shaft shell through a bearing.
Further, one end of the shaft shoulder mandrel, which is far away from the first main shaft shell, is connected with a shaft shoulder, and one end of the stirring needle mandrel, which is far away from the first main shaft shell, is connected with a stirring needle.
Further, the shaft shoulder is rotatably sleeved on the periphery of the stirring needle, and the periphery of the shaft shoulder is sleeved with a pressing sleeve.
Further, the stirring pin mandrel comprises an upper mandrel and a lower mandrel, at least a part of the upper mandrel is arranged in the first main shaft shell, and at least a part of the lower mandrel is arranged in the shoulder mandrel.
Further, the upper core shaft and the lower core shaft are coaxially arranged.
Further, the shoulder mandrel and the stirring pin mandrel are in clearance fit.
Further, the tail end of the shaft shoulder mandrel far away from the shaft shoulder is connected with a first synchronous belt.
Further, the tail end of the stirring pin mandrel far away from the stirring pin is connected with a second synchronous belt.
Further, the stirring pin comprises a shaft shoulder oil cylinder and a stirring pin oil cylinder, wherein the shaft shoulder oil cylinder is connected with the shaft shoulder mandrel and used for driving the shaft shoulder mandrel to axially move, and the stirring pin oil cylinder is connected with the stirring pin mandrel and used for driving the stirring pin mandrel to axially move.
Further, one end of the shaft shoulder mandrel, which is far away from the first main shaft shell, is connected with the second main shaft shell through a first angular contact bearing, and one end of the shaft shoulder mandrel, which is near to the first main shaft shell, is connected with the second main shaft shell through a first deep groove ball bearing; one end of the stirring needle mandrel, which is far away from the second main shaft shell, is connected with the first main shaft shell through a second deep groove ball bearing, and one end of the stirring needle mandrel, which is close to the second main shaft shell, is connected with the first main shaft shell through a second angular contact bearing.
(3) Advantageous effects
The invention can realize the purpose of respectively driving the shoulder mandrel and the stirring needle mandrel to rotate by utilizing the two driving devices, and realizing the difference of the rotation speeds of the shoulder mandrel and the stirring needle mandrel.
According to the embodiment of the invention, the double-drive differential backfill type friction stir spot welding spindle adopts a mounting mode of nesting a driving shaft shoulder mandrel and a stirring needle mandrel, and the driving shaft shoulder mandrel and the stirring needle mandrel are respectively driven, so that the double-drive differential rotation of the backfill type friction stir spot welding stirring needle and the shaft shoulder is realized, and an equipment foundation is laid for developing a new welding process of the backfill type friction stir spot welding.
Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the embodiments of the present invention will be briefly described below, and it is obvious that the drawings described below are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort to a person of ordinary skill in the art.
FIG. 1 is a schematic structural view of a dual drive differential backfill friction stir spot welding spindle in accordance with an embodiment of the present invention.
Fig. 2 is a schematic structural view of a dual drive differential backfill friction stir spot welding spindle in accordance with an embodiment of the present invention.
Fig. 3 is a schematic structural view of a dual drive differential backfill friction stir spot welding spindle in accordance with an embodiment of the present invention.
In the figure: the novel spindle comprises a first spindle shell 1, a second spindle shell 2, a shaft shoulder mandrel 3, a stirring needle mandrel 4, a shaft shoulder 5, a stirring needle 6, a shaft shoulder oil cylinder 7, a stirring needle oil cylinder 8, a first angular contact bearing 9, a first deep groove ball bearing 10, a second deep groove ball bearing 11, a second angular contact bearing 12, a pressing sleeve 13, a first synchronous belt 14 and a second synchronous belt 15.
Detailed Description
Embodiments of the present invention are described in further detail below with reference to the accompanying drawings and examples. The following detailed description of the embodiments and the accompanying drawings are provided to illustrate the principles of the invention and are not intended to limit the scope of the invention, i.e., the invention is not limited to the embodiments described, but covers any modifications, substitutions and improvements in parts, components and connections without departing from the spirit of the invention.
It should be noted that, in the case of no conflict, the embodiments and features in the embodiments may be combined with each other.
The present application will be described in detail with reference to fig. 1 to 3 in conjunction with examples.
Referring to fig. 1-3, a dual-drive differential backfill type friction stir spot welding spindle according to an embodiment of the present invention includes: the stirring pin comprises a first main shaft shell 1, a second main shaft shell 2, a shaft shoulder mandrel 3 and a stirring pin mandrel 4, wherein the shaft shoulder mandrel 3 is arranged at one end of the first main shaft shell 1 in the length direction, the stirring pin mandrel 4 is rotatably sleeved in a central through hole of the first main shaft shell 1 and the shaft shoulder mandrel 3, and the shaft shoulder mandrel 3 is rotatably sleeved in a central through hole of the second main shaft shell 2; the outer circumference of the shoulder mandrel 3 is connected with the inner circumference of the second main shaft shell 2 through a bearing, and the outer circumference of the stirring pin mandrel 4 is connected with the inner circumference of the first main shaft shell 1 through a bearing.
In the embodiment of the present invention, as shown in fig. 1 to 3, the shoulder spindle 3 is provided on the right side in the longitudinal direction of the first spindle housing 1. The stirring pin mandrel 4 is horizontally arranged, rotatably sleeved in the central through holes of the first main shaft shell 1 and the shoulder mandrel 3, the shoulder mandrel 3 is horizontally arranged, and rotatably sleeved in the central through hole of the second main shaft shell 2; the outer circumference of the shoulder mandrel 3 is connected with the inner circumference of the second main shaft shell 2 through a bearing, the outer circumference of the stirring needle mandrel 4 is connected with the inner circumference of the first main shaft shell 1 through a bearing, and after the arrangement, the shoulder mandrel 3 and the stirring needle mandrel 4 can rotate at different speeds under external driving, that is, the rotation of the shoulder mandrel 3 and the stirring needle mandrel 4 is not affected. Therefore, the embodiment of the invention can realize the purpose of respectively driving the rotation of the shoulder mandrel 3 and the stirring needle mandrel 4 by using two driving devices and realizing the difference of the rotation speeds of the shoulder mandrel 3 and the stirring needle mandrel 4, and the dual-drive differential backfill type stirring friction spot welding spindle adopts a nested installation mode of the driving shoulder mandrel 3 and the stirring needle mandrel 4, and realizes the dual-drive differential rotation of the backfill type stirring friction spot welding stirring needle 6 (the stirring needle mandrel 4 drives the stirring needle 6) and the shoulder 5 (the shoulder mandrel 3 drives the shoulder 5) by respectively driving the driving shoulder mandrel 3 and the stirring needle mandrel 4, thereby laying a device foundation for developing a new welding process for backfill type stirring friction spot welding.
According to another embodiment of the present invention, referring to fig. 3, a shoulder 5 is connected to an end of the shoulder spindle 3 away from the first spindle housing 1, and a stirring pin 6 is connected to an end of the stirring pin spindle 4 away from the first spindle housing 1. The shoulder mandrel 3 is connected with the shoulder 5, the stirring needle mandrel 4 is connected with the stirring needle 6, so that the rotation and axial movement speeds of the shoulder mandrel 3 and the stirring needle mandrel 4 can be respectively transmitted to the shoulder 5 and the stirring needle 6, and the shoulder 5 and the stirring needle 6 perform spot welding operation by utilizing the transmitted double-drive differential backfill type stirring friction.
According to a further embodiment of the present invention, referring to fig. 3, the shaft shoulder 5 is rotatably sleeved on the periphery of the stirring pin 6, and a pressing sleeve 13 is sleeved on the periphery of the shaft shoulder 5. The pressing sleeve 13 is used for fixing the shaft shoulder 5 and the stirring pin 6 when the double-drive differential backfill type friction stir spot welding is implemented, limiting the moving range of the shaft shoulder 5 and the stirring pin 6 and limiting the flow of molten solder.
According to one embodiment of the present invention, referring to fig. 1 and 2, the stirring pin mandrel 4 includes an upper mandrel and a lower mandrel, at least a portion of the upper mandrel is disposed in the first spindle housing 1, and at least a portion of the lower mandrel is disposed in the shoulder mandrel 3. In the embodiment of the invention, since the length of the stirring pin mandrel 4 is generally relatively long, a part of the upper mandrel is arranged in the first main shaft shell 1, a part of the lower mandrel is arranged in the shoulder mandrel 3, and the stirring pin mandrel 4 is formed by interconnecting the upper mandrel and the lower mandrel, so that the upper mandrel and the lower mandrel can be conveniently installed and detached, and further, the stirring pin mandrel 4 is convenient to replace and maintain.
Specifically, referring to fig. 1 and 2, the upper mandrel and the lower mandrel are coaxially disposed. The upper mandrel and the lower mandrel are coaxially arranged, so that coaxial rotation of the stirring needle mandrel 4 can be ensured, further coaxial rotation of the stirring needle mandrel 4 and the shaft shoulder mandrel 3 is realized, and further the shaft shoulder 5 and the stirring needle 6 can accurately implement double-drive differential backfill type friction stir spot welding operation.
According to a further embodiment of the invention, referring to fig. 1 and 2, the shoulder spindle 3 and the stirring pin spindle 4 are in clearance fit. The clearance fit between the shaft shoulder mandrel 3 and the stirring pin mandrel 4 can ensure free rotation between the shaft shoulder mandrel 3 and the stirring pin mandrel 4, so that the shaft shoulder 5 and the stirring pin 6 can accurately and freely implement double-drive differential backfill type friction stir spot welding operation.
According to another embodiment of the invention, referring to fig. 2, the shoulder spindle 3 is connected to a first synchronization belt 14 at a tail end remote from the shoulder 5. Compared with the existing gear transmission mode, the transmission mode through the synchronous belt has the advantages of high transmission precision, small error, convenience in speed control, simple implementation mode, long service life and the like.
According to one embodiment of the present invention, referring to fig. 2, the end of the pin mandrel 4 away from the pin 6 is connected to a second timing belt 15. Compared with the existing gear transmission mode, the transmission mode through the synchronous belt has the advantages of high transmission precision, small error, convenience in speed control, simple implementation mode, long service life and the like.
According to another embodiment of the present invention, referring to fig. 2, the stirring pin device further comprises a shoulder oil cylinder 7 and a stirring pin oil cylinder 8, wherein the shoulder oil cylinder 7 is connected with the shoulder mandrel 3 and is used for driving the shoulder mandrel 3 to axially move, and the stirring pin oil cylinder 8 is connected with the stirring pin mandrel 4 and is used for driving the stirring pin mandrel 4 to axially move. When the double-drive differential backfill type friction stir spot welding is carried out, the shaft shoulder 5 and the stirring pin 6 need to carry out feeding, backfilling and other operations according to the processing progress, so that the shaft shoulder 5 and the stirring pin 6 are driven to carry out feeding, backfilling and other operations by the shaft shoulder mandrel 3 and the stirring pin mandrel 4 respectively, and meanwhile, the operation mode of the oil cylinder has the advantages of high transmission precision, small error, convenience in speed control, simple implementation mode, long service life and the like compared with the existing other modes.
According to another embodiment of the present invention, referring to fig. 1, an end of the shoulder spindle 3 away from the first spindle housing 1 is connected to the second spindle housing 2 through a first angular contact bearing 9, and an end of the shoulder spindle 3 near the first spindle housing 1 is connected to the second spindle housing 2 through a first deep groove ball bearing 10; the stirring pin core shaft 4 is far away from one end of the second main shaft shell 2 and is connected with the first main shaft shell 1 through a second deep groove ball bearing 11, and one end of the stirring pin core shaft 4, which is close to the second main shaft shell 2, is connected with the first main shaft shell 1 through a second angular contact bearing 12. The shoulder mandrel 3 and the stirring needle mandrel 4 are respectively positioned at the two ends of the second main shaft shell 2 and the first main shaft shell 1, and the angular contact bearing deep groove ball bearings are arranged at the two ends of the shoulder mandrel 3 and the stirring needle mandrel 4 so as to realize the transmission connection of the shoulder mandrel 3 and the second main shaft shell 2 and the transmission connection of the stirring needle mandrel 4 and the first main shaft shell 1, and the bearing distribution mode ensures the structural stability when the shoulder mandrel 3 and the stirring needle mandrel 4 can bear larger welding upsetting force.
Besides, the inner ring of the bearing can be fixedly locked by adopting a boss and a locking nut, and the outer ring of the bearing is locked by adopting a boss, an adjusting pad and an end cover; meanwhile, a certain pre-compression force can be adopted for the diagonal contact ball bearing.
The following describes a dual drive differential backfill friction stir spot welding spindle according to an embodiment of the present invention with a specific example. Referring to fig. 1-3, in the dual-drive differential backfill type friction stir spot welding spindle in the embodiment of the invention, a spring expansion sleeve is adopted to connect a stirring pin 6 to the front end of a stirring pin mandrel 4, a shaft shoulder 5 is adopted to connect a spring expansion sleeve to the front end of a shaft shoulder mandrel 3, and the front ends of a first spindle housing 1 and a second spindle housing 2 are respectively connected with a compression sleeve. The end surfaces of the adjusting stirring pin 6, the shaft shoulder 5 and the pressing sleeve 13 are positioned on the same plane, and the connecting structure of other components is as described above and is not described in detail herein.
The welded workpiece is made of 2219 aluminum alloy, the plate thickness is 2mm, and the welding mode is lap joint. The rotational speed of the shoulder 5 was set to 1600RPM, the rotational speed of the pin 6 was 2000RPM, and the depth of weld was 2.5mm.
The starting equipment is shown in the figure 3, the main shaft rotating speed of the shaft shoulder 5 is 1600RPM, and the main shaft rotating speed of the stirring pin 6 is 2000RPM. After the machine head is pricked downwards and the compacting sleeve 13 contacts the surface of the part, the stirring pin 6 and the shaft shoulder 5 quickly rub the surface of a welding spot, and the metal in the welding spot area is in a thermoplastic state; the stirring pin 6 moves upwards while the shaft shoulder 5 is pricked downwards, and plastic metal extruded by the shaft shoulder 5 is pricked downwards to move towards a cavity area below the stirring pin 6; then, the shaft shoulder 5 moves upwards, the stirring pin 6 moves downwards, and the molding metal below the stirring pin 6 flows back to the lower part of the shaft shoulder; the end surfaces of the stirring pin 6, the shaft shoulder 5 and the pressing sleeve 13 are flush again, the machine head is lifted up, and the equipment is stopped. And finishing a double-drive differential backfill type friction stir spot welding cycle.
According to the embodiment of the invention, the two driving devices are utilized to respectively drive the shoulder mandrel 3 and the stirring pin mandrel 4 to rotate, so that the aim of different rotation speeds of the shoulder mandrel 3 and the stirring pin mandrel 4 is fulfilled.
It should be understood that, in the present specification, each embodiment is described in an incremental manner, and the same or similar parts between the embodiments are all referred to each other, and each embodiment is mainly described in a different point from other embodiments. For embodiments of the method, reference may be made to the description of parts of embodiments of the apparatus. The invention is not limited to the specific steps and structures described above and shown in the drawings. Also, a detailed description of known method techniques is omitted here for the sake of brevity.
The foregoing is merely exemplary of the present application and is not limited thereto. Various modifications and alterations of this application will become apparent to those skilled in the art without departing from the scope of this invention. Any modifications, equivalent substitutions, improvements, etc. which are within the spirit and principles of the present application are intended to be included within the scope of the claims of the present application.
Claims (5)
1. The utility model provides a two differential backfill formula friction stir spot welding main shaft that drive which characterized in that includes: the stirring pin comprises a first main shaft shell (1), a second main shaft shell (2), a shoulder mandrel (3) and a stirring pin mandrel (4), wherein the shoulder mandrel (3) is arranged at one end of the first main shaft shell (1) in the length direction, the stirring pin mandrel (4) is rotatably sleeved in a central through hole of the first main shaft shell (1) and the shoulder mandrel (3), and the shoulder mandrel (3) is rotatably sleeved in a central through hole of the second main shaft shell (2); the outer peripheral ring of the shaft shoulder mandrel (3) is connected with the inner peripheral ring of the second main shaft shell (2) through a bearing, and the outer peripheral ring of the stirring needle mandrel (4) is connected with the inner peripheral ring of the first main shaft shell (1) through a bearing; one end of the shaft shoulder mandrel (3) far away from the first main shaft shell (1) is connected with a shaft shoulder (5), and one end of the stirring needle mandrel (4) far away from the first main shaft shell (1) is connected with a stirring needle (6); the stirring pin mandrel (4) comprises an upper mandrel and a lower mandrel, at least one part of the upper mandrel is arranged in the first main shaft shell (1), and at least one part of the lower mandrel is arranged in the shoulder mandrel (3); the tail end of the shaft shoulder mandrel (3) far away from the shaft shoulder (5) is connected with a first synchronous belt (14); the tail end of the stirring pin mandrel (4) far away from the stirring pin (6) is connected with a second synchronous belt (15); the stirring pin device is characterized by further comprising a shaft shoulder oil cylinder (7) and a stirring pin oil cylinder (8), wherein the shaft shoulder oil cylinder (7) is connected with the shaft shoulder mandrel (3) and used for driving the shaft shoulder mandrel (3) to axially move, and the stirring pin oil cylinder (8) is connected with the stirring pin mandrel (4) and used for driving the stirring pin mandrel (4) to axially move.
2. The double-drive differential backfill type friction stir spot welding spindle as claimed in claim 1, wherein the shaft shoulder (5) is rotatably sleeved on the periphery of the stirring pin (6), and a pressing sleeve (13) is sleeved on the periphery of the shaft shoulder (5).
3. The dual drive differential backfill friction stir spot welding spindle as recited in claim 1 wherein said upper spindle and said lower spindle are coaxially disposed.
4. A dual drive differential backfill friction stir spot welding spindle as claimed in claim 1 wherein said shoulder spindle (3) and said pin spindle (4) are in clearance fit.
5. The double-drive differential backfill type friction stir spot welding spindle according to claim 1, wherein one end of the shoulder spindle (3) far away from the first spindle housing (1) is connected with the second spindle housing (2) through a first angular contact bearing (9), and one end of the shoulder spindle (3) near the first spindle housing (1) is connected with the second spindle housing (2) through a first deep groove ball bearing (10); one end of the stirring pin mandrel (4) far away from the second main shaft shell (2) is connected with the first main shaft shell (1) through a second deep groove ball bearing (11), and one end of the stirring pin mandrel (4) close to the second main shaft shell (2) is connected with the first main shaft shell (1) through a second angular contact bearing (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211118184.2A CN115464248B (en) | 2022-09-15 | 2022-09-15 | Double-drive differential backfill type friction stir spot welding main shaft |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211118184.2A CN115464248B (en) | 2022-09-15 | 2022-09-15 | Double-drive differential backfill type friction stir spot welding main shaft |
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| Publication Number | Publication Date |
|---|---|
| CN115464248A CN115464248A (en) | 2022-12-13 |
| CN115464248B true CN115464248B (en) | 2023-12-29 |
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| JP2005081351A (en) * | 2003-09-04 | 2005-03-31 | Aisin Aw Co Ltd | Friction pressure welding member and differential gear equipped with member |
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