CN110802317B - Static shaft shoulder wire filling friction stir welding machine head system - Google Patents
Static shaft shoulder wire filling friction stir welding machine head system Download PDFInfo
- Publication number
- CN110802317B CN110802317B CN201911117300.7A CN201911117300A CN110802317B CN 110802317 B CN110802317 B CN 110802317B CN 201911117300 A CN201911117300 A CN 201911117300A CN 110802317 B CN110802317 B CN 110802317B
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- Prior art keywords
- wire
- shaft shoulder
- static shaft
- mounting seat
- static
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- 238000003466 welding Methods 0.000 title claims abstract description 51
- 238000003756 stirring Methods 0.000 title claims abstract description 49
- 230000003068 static effect Effects 0.000 title claims abstract description 48
- 239000000945 filler Substances 0.000 claims abstract description 24
- 239000000463 material Substances 0.000 claims abstract description 20
- 230000006835 compression Effects 0.000 claims abstract description 11
- 238000007906 compression Methods 0.000 claims abstract description 11
- 238000003825 pressing Methods 0.000 claims abstract description 11
- 238000005096 rolling process Methods 0.000 claims abstract description 7
- 230000001360 synchronised effect Effects 0.000 claims abstract description 7
- 230000003014 reinforcing effect Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 13
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001125 extrusion Methods 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
- B23K20/26—Auxiliary equipment
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
A static shaft shoulder wire filling friction stir welding machine head system comprises a stirring pin mounting handle, a main shaft cutter handle, a main shaft guard plate, a static shaft shoulder mounting seat, a static shaft shoulder, a stirring pin and an automatic wire feeder, and is characterized in that: one side of the static shaft shoulder mounting seat is provided with a compression roller mechanism and is provided with a wire feeder, and the compression roller mechanism has upper and lower degrees of freedom and is used for realizing elastic rolling of the filler wire sent out by the wire feeder and realizing synchronous wire filling. When the automatic wire feeding device is used for welding, the wire feeding material is pushed by the automatic wire feeding machine, and the wire feeding material is filled to the front end of the stirring pin through the wire feeding guide groove of the static shaft shoulder due to the action of the pressing wheel in the pressing roller system, so that automatic and effective wire feeding of the wire feeding material is realized. Meanwhile, the problem that the reaction of the added wire material to the pinch roller is large and small due to the change of the assembly gap of the workpiece in the rolling process is effectively solved, so that the effective downward pressure applied in the welding process is influenced, and the stability of the welding process quality is further ensured.
Description
Technical Field
The invention belongs to the technical field of friction stir welding of stationary shaft shoulders, and particularly relates to a friction stir welding machine head system for aluminum alloy product parts with different assembly gap sizes.
Background
Friction stir welding (Friction stir welding, FSW) has been invented in 1991 to date and has found a great deal of industrial applications in the fields of aviation, aerospace, automotive, shipbuilding, rail transit, etc. In general, in order to ensure a good FSW welding effect, the assembly gap of the workpiece to be welded needs to be controlled within a certain process allowable range, and the range is closely related to the thickness of the workpiece to be welded, the structural size of the stirring head selected and the matching process (at present, the assembly gap needs to be controlled within 10% of the thickness of the workpiece to be welded, and the maximum is not more than 1.0 mm). However, in practical engineering application, the problems of over-tolerance in precision and size of the workpiece, insufficient flatness or rigidity of the tool and the like often result in that the assembly gap of the workpiece to be welded exceeds the process allowable range in whole or in some parts, and particularly when the length of the workpiece to be welded is larger, the assembly gap of the workpiece is more difficult to control. As such, the friction stir welding technique is limited in its industrial application to some large and large components. The static shaft shoulder friction stir welding (Stationary shoulder friction stir welding, SSFSW) is developed on the basis of conventional friction stir welding, and the static shaft shoulder is formed by the fact that the shaft shoulder of the SSFSW machine head and the stirring pin are of a split structure, and the main shaft of the machine head directly drives the inner stirring pin to rotate during welding operation, and the outer shaft shoulder does not rotate but only translates along the welding advancing direction. Therefore, compared with the conventional FSW, the SSFSW has the characteristics of low torque and power requirements on the main shaft of the machine head, smooth surface forming of welding seams and the like. In addition, the shaft shoulder does not rotate in the SSFSW welding process, so that the introduction and addition of external materials are facilitated, and further, the filler wire friction stir welding is realized. However, the work related to the friction stir welding of the stationary shoulder filler wire is mainly carried out around the research work on the aspects of fillet welding, influence of different filler materials on the tissue performance of the welded joint and the like, and the related practical engineering application is not reported yet. The analysis reasons are mainly that the filler wires of the current static shaft shoulder friction stir welding are realized by arranging filler materials in a welding seam gap to be welded in advance under the condition of fixing a combination gap, and then performing SSFSW welding. In the specific engineering application, the actual situation is that the sizes of the gaps of the whole welding lines to be welded are different, so that the adding materials are difficult to be arranged in the gaps of the welding lines to be welded in advance, and the implementation difficulty is higher when the adding materials are arranged in the gaps of the welding lines to be welded with different sizes in advance, especially when the size of the workpiece to be welded is large and the welding lines to be welded are long. Therefore, aiming at the problems that the prior SSFSW wire filling method has poor adaptability to the size of a weld joint gap to be welded and cannot realize synchronous wire filling, the development of a static shaft shoulder wire filling friction stir welding machine head which is highly adaptive to the weld joint assembly gap and can realize synchronous automatic wire filling effect is urgent.
Disclosure of Invention
The invention aims to provide a welding head system suitable for static shoulder filler wire friction stir welding with larger length of a workpiece to be welded and different size of a welding seam assembly gap to be welded, and can realize synchronous automatic filler wire.
In order to achieve the aim of the invention, the invention provides a static shaft shoulder wire filling friction stir welding machine head system, which comprises a stirring pin mounting handle, a main shaft cutter handle, a main shaft guard plate, a static shaft shoulder mounting seat, a static shaft shoulder, a stirring pin and an automatic wire feeder, and is characterized in that: one side of the static shaft shoulder mounting seat is provided with a compression roller mechanism and is provided with a wire feeder, and the compression roller mechanism has upper and lower degrees of freedom and is used for realizing elastic rolling of the filler wire sent out by the wire feeder and realizing synchronous wire filling.
The compression roller mechanism comprises a mounting seat, a guide block mounting plate, an air cylinder, an air pressure station, a guide sliding rail and a pressing wheel, wherein the mounting seat is mounted on a static shaft shoulder mounting seat, the guide block is fixed on the guide block mounting plate, the guide block mounting plate is mounted on the mounting seat, the air cylinder is mounted on the guide block mounting plate and is connected with the air pressure station, the guide sliding rail is provided with three supporting feet, one supporting foot is connected with a piston of the air cylinder, the other supporting foot penetrates through the guide block to move freely up and down in the guide block, the pressing wheel is mounted at the front end of one supporting foot, and the pressing wheel is in contact fit with the added wire.
The surface of the static shaft shoulder is provided with a convex ring, and the convex ring is concentric with the stirring needle through hole and is used for controlling the surface size and the shape of the static shaft shoulder friction stir welding seam.
The surface of the static shaft shoulder is provided with a wire filling guide groove parallel to the advancing direction of the machine head, the wire filling guide groove extends to the raised ring all the time, so that the wire filling material is filled to the front end of the stirring pin, and the lower concave parts of the two ends of the static shaft shoulder are provided with mounting holes for connecting the static shaft shoulder mounting seats.
The filler wire guide groove penetrates through the protruding ring and penetrates through the upper surface of the whole static shaft shoulder, and is used for achieving welding with a welding seam with reinforcing requirements.
The pinch roller wheel surface is provided with a guide groove to realize the guide filling of the added wire.
The guide groove is a V-shaped groove.
When the automatic wire feeding device is used for welding, the wire feeding material is pushed by the automatic wire feeding machine, and the wire feeding material is filled to the front end of the stirring pin through the wire feeding guide groove of the static shaft shoulder due to the action of the pressing wheel in the pressing roller system, so that automatic and effective wire feeding of the wire feeding material is realized. Meanwhile, the problem that the reaction of the added wire material to the pinch roller is large and small due to the change of the assembly gap of the workpiece in the rolling process is effectively solved, so that the effective downward pressure applied in the welding process is influenced, and the stability of the welding process quality is further ensured.
Drawings
FIG. 1 is a schematic illustration of a work piece to be welded with an assembly gap;
FIG. 2 is a schematic diagram of a static shoulder filler wire friction stir welding head;
FIG. 3 is a schematic view of a stationary shoulder with a filler wire guide slot not open;
FIG. 4 is a schematic view of a stationary shoulder with a filler wire channel open;
figure 5 is a schematic diagram of a puck.
Detailed Description
The invention is described in further detail below with reference to the accompanying drawings.
Referring to fig. 1 and 2, the concrete embodiment of the invention comprises a stirring pin mounting handle 4, a main shaft handle 5, a main shaft guard plate 6, a static shaft shoulder mounting seat 7, a static shaft shoulder 8, a stirring pin 9, a compression roller mechanism 10 and a wire feeder 11, wherein the stirring pin 9 is screwed on the stirring pin mounting handle 4, and the stirring pin mounting handle 4 is fixed on the main shaft handle 5 through bolts. The static shaft shoulder mounting seat 7 is fixed on the main shaft guard plate 6 through bolts, and the static shaft shoulder 8 is mounted on the static shaft shoulder mounting seat 7 through bolts.
The compression roller mechanism 10 consists of a mounting seat 10-1, a guide block 10-2, a guide block mounting plate 10-3, an air cylinder 10-4, a guide sliding rail 10-5, an air pressure station 10-6 and a compression roller 10-7. The mounting seat 10-1 is mounted on the stationary shoulder mounting seat 7 through bolts, the guide block 10-2 is fixed on the guide block mounting plate 10-3 through bolts, and the guide block mounting plate 10-3 is mounted on the mounting seat 10-1 through bolts. The cylinder 10-4 is mounted to the guide block mounting plate 10-3 by bolts and is connected to the air pressure station 10-6. The guide slide rail 10-5 is provided with three support legs, one support leg is connected with a piston of an air cylinder, the other support leg passes through the guide block 10-2 to move up and down freely in the guide block, the front end of the other support leg is provided with a pinch roller 10-7, and the wheel surface of the pinch roller is provided with a V-shaped groove to realize guide filling of the filler wire. The pinch roller and the wire filling material contact and match, and the pinch roller transmits the effort of wire filling material to the guide slide rail, and the guide slide rail drives the cylinder piston along the free motion about the guide block, realizes the elasticity roll extrusion to wire filling material to the effective down force that exerts in the welding process is not influenced, and then guaranteed the stability of welding process quality, realizes simultaneously that the wire filling is synchronous.
Referring to fig. 3, a stirring pin passing hole 8-1 is formed in the center of a static shaft shoulder 8, a protruding ring 8-2 is arranged at the position of the stirring pin passing hole, the stirring pin passing hole and the protruding ring are concentric, the protruding ring is an acting contact surface of the static shaft shoulder and a workpiece to be welded, the size and shape of the protruding ring directly control the surface size and shape of a static shaft shoulder friction stir welding seam, a wire filling guide groove 8-3 is arranged on the surface of the static shaft shoulder in parallel with the travelling direction of a machine head and is used as a guide path of a wire filling material, the wire filling guide groove 8-3 is ensured to be effectively filled to the front end position of the stirring pin, the wire filling guide groove 8-3 extends to the protruding ring, so that materials can be filled to the front end of the stirring pin, and mounting holes 8-4 are formed in the lower concave parts of two ends of the static shaft shoulder and are used for connecting a static shaft shoulder mounting seat 7.
Referring to fig. 4, filler wire guide slots 8-3 extend through the raised ring across the entire upper surface of the stationary shoulder for achieving a weld with enhanced high requirements.
Referring to fig. 5, V-grooves are formed on the wheel surface of the pressing wheel 10-7, and the V-grooves are beneficial to the gripping control of the filler wires, ensure the control of the filler wires and realize the guiding filling of the filler wires.
The working process comprises the following steps:
the filling wire 12 is pushed by the automatic wire feeder 11 and is filled to the front end of the stirring pin through the filling wire guide groove of the static shaft shoulder under the rolling action of the pressing wheel, so that the automatic and effective filling of the filling wire is realized. When the gap between the pair of welding lines 3 is reduced, the filler wires are more floated on the surface of the welding line 3 to be welded, and the pressing wheel is integrally upwards under the reaction force of the filler wires, so that the effective downward pressure of the main shaft on the stirring pin is not influenced, and meanwhile, the position of the filler wires can be effectively restrained and controlled under the condition of keeping the preset rolling pressure unchanged, and the filler wires are ensured to be filled according to the track of the welding line to be welded between the workpieces 1 and 2.
Claims (1)
1. A static shaft shoulder wire filling friction stir welding machine head system comprises a stirring pin mounting handle, a main shaft cutter handle, a main shaft guard plate, a static shaft shoulder mounting seat, a static shaft shoulder, a stirring pin and an automatic wire feeder, and is characterized in that: a compression roller mechanism is arranged on one side of the static shaft shoulder mounting seat and is provided with a wire feeder, and the compression roller mechanism has upper and lower degrees of freedom and is used for realizing elastic rolling of the filler wire sent by the wire feeder and realizing synchronous wire filling;
the compression roller mechanism comprises a mounting seat, a guide block mounting plate, an air cylinder, an air pressure station, a guide sliding rail and a pressing wheel, wherein the mounting seat is mounted on a static shaft shoulder mounting seat;
the surface of the static shaft shoulder is provided with a convex ring, and the convex ring is concentric with the stirring needle through hole and is used for controlling the surface size and the shape of the static shaft shoulder friction stir welding seam;
the surface of the static shaft shoulder is provided with a wire filling guide groove in parallel with the travelling direction of the machine head, the wire filling guide groove extends to the raised ring all the way, so that the wire filling material is filled to the front end of the stirring pin, and the lower concave parts of the two ends of the static shaft shoulder are provided with mounting holes for connecting the static shaft shoulder mounting seats;
the filler wire guide groove penetrates through the protruding ring and penetrates through the upper surface of the whole static shaft shoulder, and is used for realizing welding with a welding seam with a reinforcing requirement;
the pinch roller wheel surface is provided with a guide groove to realize guide filling of the added wire;
the guide groove is a V-shaped groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911117300.7A CN110802317B (en) | 2019-11-15 | 2019-11-15 | Static shaft shoulder wire filling friction stir welding machine head system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911117300.7A CN110802317B (en) | 2019-11-15 | 2019-11-15 | Static shaft shoulder wire filling friction stir welding machine head system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110802317A CN110802317A (en) | 2020-02-18 |
| CN110802317B true CN110802317B (en) | 2024-03-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911117300.7A Active CN110802317B (en) | 2019-11-15 | 2019-11-15 | Static shaft shoulder wire filling friction stir welding machine head system |
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| CN111331246A (en) * | 2020-04-17 | 2020-06-26 | 哈尔滨万洲焊接技术有限公司 | Method and device for friction stir welding of dissimilar metals |
| CN111843173A (en) * | 2020-07-09 | 2020-10-30 | 中车青岛四方机车车辆股份有限公司 | Composite welding method and device for friction stir welding |
| TWI732676B (en) * | 2020-09-14 | 2021-07-01 | 喬崴進科技股份有限公司 | Friction stir welding adapter and tool holder having an air valve switch system |
| TWI738507B (en) * | 2020-09-14 | 2021-09-01 | 喬崴進科技股份有限公司 | Friction stir welding adapter having a static shaft shoulder system |
| CN112658460A (en) * | 2020-12-09 | 2021-04-16 | 昆山哈工万洲焊接研究院有限公司 | Device and method for performing FSW (free space wall) additive manufacturing by utilizing static shaft shoulder cavity |
| CN112496522B (en) * | 2021-02-01 | 2021-05-25 | 昆山哈工万洲焊接研究院有限公司 | Stirring friction material increase device and material increase manufacturing method |
| CN112958902A (en) * | 2021-02-05 | 2021-06-15 | 山东大学 | Wire-filling static shaft shoulder friction stir welding and material increase manufacturing device and method |
| CN113351954B (en) * | 2021-07-06 | 2023-05-26 | 河北华通重工机械制造有限公司 | Sealing steel ring surface welding seam brazing filling device |
| CN114012245A (en) * | 2021-11-23 | 2022-02-08 | 湖南坤鼎数控科技有限公司 | A pinch roller leveling device for friction stir welding |
| CN114473178A (en) * | 2022-03-08 | 2022-05-13 | 大连理工大学 | Automatic wire-feeding friction stir material additive manufacturing machine |
| CN115647569B (en) * | 2022-11-15 | 2023-04-14 | 哈尔滨工业大学 | Robot continuous wire feeding friction stir material increasing device and curved surface material increasing method |
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| JPH07290247A (en) * | 1994-04-22 | 1995-11-07 | Daihen Corp | Arc welding contact tip and production thereof |
| JPH11254154A (en) * | 1998-03-13 | 1999-09-21 | Daido Steel Co Ltd | Method and apparatus for cladding by welding, and material therefor |
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