CN107309541B - Stirring cooling device and stirring friction welding machine - Google Patents
Stirring cooling device and stirring friction welding machine Download PDFInfo
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- CN107309541B CN107309541B CN201710611504.0A CN201710611504A CN107309541B CN 107309541 B CN107309541 B CN 107309541B CN 201710611504 A CN201710611504 A CN 201710611504A CN 107309541 B CN107309541 B CN 107309541B
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- stirring
- water
- fog
- cooling device
- cover
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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
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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
- 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
- B23K37/00—Auxiliary devices or processes, not specially adapted to a procedure covered by only one of the preceding main groups
- B23K37/003—Cooling means
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Pressure Welding/Diffusion-Bonding (AREA)
Abstract
The invention discloses a stirring and cooling device and a friction stir welding machine, wherein the stirring and cooling device is used for cooling a stirring head of the welding machine and comprises a fixed frame, a bell-shaped fog cover arranged on the fixed frame, an aerial fog nozzle positioned at the side part of the fog cover and used for spraying water fog to the inner cavity of the fog cover, a water tank positioned at the lower edge of the fog cover and used for collecting cooling water, and a water suction pipe of which the water inlet end extends into the water tank. The invention also discloses a friction stir welding machine comprising the stirring cooling device. According to the stirring cooling device, the stirring head and the welding area can be cooled simultaneously without influencing the workbench, cooling water can be recycled, and the spray head is not influenced by the stirring head rotating at a high speed.
Description
Technical Field
The invention relates to welding equipment, in particular to a stirring and cooling device and a stirring friction welding machine.
Background
The friction stir welding method has the advantages of small welding deformation, small residual stress, capability of eliminating welding defects such as air holes, impurities, cracks and the like, and is widely applied to various fields. However, in practical application, the method often causes the welding thin plate to warp and deform due to too high friction heat generation of the stirring head, damages the internal tissue structure of the welding line and accelerates the loss of the stirring pin, so that the welding quality and efficiency are greatly reduced. In addition, the high rotational speed of the stirrer head is disadvantageous for internal cooling.
The existing cooling device for friction stir welding only can locally cool the stirring head rotating at high speed, and cooling water can only circulate in the water tank, so that the use efficiency is low. The first prior art provides a retractable double-shaft-shoulder stirring head, but does not provide a specific method for retracting a stirring pin rotating at a high speed; the second prior art provides a friction stir welding cooling method, which mainly achieves the purpose of cooling a stirring head by the way that cooling water enters the stirring head through a main shaft and holes are formed in the stirring head, but cannot be realized under the condition of ultrahigh rotating speed (the rotating speed of the main shaft is higher than 10000 revolutions per minute), an internal water inlet pipe and the stirring head rotating at high speed can be rubbed or even collided by vibration generated by high-speed rotation, and the water inlet pipe can be instantaneously brittle and thrown away by huge centrifugal force caused by ultrahigh speed, so that great potential safety hazards are caused, the cost is high, and the interchangeability is poor; and the water flow thrown out by the small side holes is easy to flow back upwards along the upper end surface and the cylindrical surface in the cooling process, the internal insulation of the motor is influenced, and the cooling effect is greatly weakened. It is therefore an urgent task to design a cooling device that simultaneously cools the pin and the welding area, does not affect the work table, allows the recycling of the cooling water, and allows the spray head to be unaffected by the high-speed rotating pin.
Disclosure of Invention
The purpose of the invention is as follows: the invention provides a stirring cooling device applied to a high-speed stirring head, which can simultaneously cool the stirring head and a welding area without influencing a workbench, high-speed rotation of the stirring head and the rotation speed of the stirring head. In addition, the invention also provides a friction stir welding machine comprising the stirring cooling device.
The technical scheme is as follows: the stirring and cooling device is used for cooling a stirring head of a welding machine and comprises a fixed frame, a bell-shaped fog cover arranged on the fixed frame, an aerial fog nozzle which is positioned at the side part of the fog cover and used for spraying water fog to an inner cavity of the fog cover, a water tank which is positioned at the lower edge of the fog cover and used for collecting cooling water, and a water suction pipe of which the water inlet end extends into the water tank.
In a further embodiment, the fixing frame is a two-point fixing frame, threaded hole structures are formed in two ends of the fixing frame and used for being connected with the spindle frame, and the fog cover is fixed and connected with the fixing frame in an interference fit mode.
The stirring head is provided with a plurality of water limiting grooves, and the diameters of the water limiting grooves are larger than the diameters of the stirring heads positioned on two sides of the water limiting grooves. The water mist entering the mist cover can be thrown away from the stirring head under the action of the water limiting groove on the stirring head; the diameter of water limit tank is greater than the stirring head diameter that is located water limit tank both sides, thereby can avoid attached to the water droplet on the stirring head to trace to the flight under the effect of centrifugal force and spill and reduce the cooling effect.
The two aerosol nozzles are symmetrically arranged along the axis of the aerosol cover. The aerosol nozzle is in clearance fit with the aerosol cover, the direction of the nozzle can be adjusted, and the cooled part can be controlled.
The lower end of the fog cover is connected with the water tank in an interference fit manner. The diameter of a port formed by the upper part of the fog cover and the connecting part of the fixing frame is smaller than that of the port at the lower part of the fog cover. The design that the upper part of the fog cover is narrow and the lower part of the fog cover is wide enables a part of water drops thrown away by centrifugal force to be rebounded by the inner wall of the fog cover and a part of water drops flow down along the inner wall of the fog cover to enter the water tank. Along the direction from the upper port to the lower port of the fog cover, the diameter of the fog cover is gradually increased, and the inner wall of the fog cover forms a curved surface.
The end surface of the bottom of the water tank is connected with the fog cover, one side of the end surface of the bottom of the water tank is higher than the end surface of the bottom of the other side of the end surface of the bottom of the fog cover, and the design that the inner side of the bottom of the water tank is higher than the outer side enables water gathered on the inner side of the fog cover to naturally flow to.
The water inlet end of the water suction pipe is arranged below the upper end surface of the water tank, the depth of the water suction pipe can be 1-2 mm, the water suction pipe can suck overflowed water drops back to the hydraulic cylinder in real time to be recycled, the cost is reduced, and the environment is protected.
A friction stir welding machine comprises the stirring cooling device.
The stirring cooling device adjusts the angle of the aerosol nozzle before welding, and opens the aerosol nozzle after the stirring head is preheated, so that cooling aerosol enters the aerosol cover; after the water mist is sprayed into the mist cover, a part of the micro water drops reaching the stirring head is rebounded, after the mist cover compresses and guides the water mist in the cavity of the mist cover, a part of the water mist is sprayed out of the mist cover, and the other part of the water mist flows down along the inner wall of the mist cover and enters the circulating water tank for secondary utilization. Thereby reach the cooling stirring head to reduce or avoid the sheet metal in welding process to take place the mesh of deformation, reduce then the tissue too big, improve the welding seam performance.
Has the advantages that: the invention solves the problem of insufficient cooling caused by the fact that cooling water of the existing cooling device flows back along the rotating shaft, and the stirring head can be fully cooled in the welding process; the cooling water can be repeatedly circulated and cooled for many times, and the overflowed cooling water can not splash and has small influence on the surrounding environment; the aerosol nozzle has good interchangeability, and solves the problems that the self-cooling stirring head needs to be machined in a customized manner and the time consumption and the cost are high due to the fact that a cooling water outlet hole is blocked when the self-cooling stirring head works for a long time; the cooling device has the advantages of fewer parts, simple structure, low cost, simple installation, simple and convenient operation and strong practicability.
Drawings
FIG. 1 is a schematic view of a stirring and cooling apparatus according to the present invention;
FIG. 2 is a schematic view of the mist cover, which is the main part of the stirring cooling device of the present invention;
FIG. 3 is a schematic view of the water tank as the main part of the stirring and cooling device of the present invention.
Detailed Description
As shown in fig. 1, the stirring and cooling device comprises a fixing frame 1, a bell-shaped fog cover 2 installed on the fixing frame, two fog nozzles 3 located on the side portion of the fog cover and used for spraying water fog to an inner cavity of the fog cover, the fog nozzles 3 are symmetrically arranged along the central axis of the fog cover, a water tank 4 located on the lower edge of the fog cover 2 and used for collecting cooling water, the lower end of the fog cover 2 is connected with the water tank 4 in an interference fit manner, one side of the end face of the bottom of the water tank, which is connected with the fog cover, is higher than the end face of the bottom of the other side of the water tank, a water inlet end extends to a water suction pipe 5 in the water tank, a stirring head 6 is provided with a.
The installation method of the stirring cooling device comprises the following steps:
(1) connecting the other end of the aerosol nozzle 3 to a liquid cylinder filled with cooling water;
(2) adjusting the flow valve on the aerosol nozzle 3 according to the requirement;
(3) the angle of the aerosol nozzle 3 is adjusted;
(4) placing the tail end of the water suction pipe 5 at a position one to two millimeters below the upper end surface of the circulating water tank 4 and starting a water suction pump;
(5) starting a welding spindle motor, setting a tool, determining a program and executing the program;
(6) after the preheating program is executed, a water suction pump is started before welding advances;
(7) after the moving process is finished, the water suction pump is closed when the stirring pin is drawn out;
(8) the welding process is ended.
Claims (6)
1. A stirring cooling device is used for cooling a stirring head of a welding machine and is characterized by comprising a fixed frame (1), a bell-shaped fog cover (2) arranged on the fixed frame (1), an aerial fog nozzle (3) which is positioned at the side part of the fog cover (2) and used for spraying water fog to the inner cavity of the fog cover (2), a water tank (4) which is positioned at the lower edge of the fog cover (2) and used for collecting cooling water, and a water suction pipe (5) of which the water inlet end extends into the water tank (4); the stirring head (6) is provided with a plurality of water limiting grooves (7), and the diameters of the water limiting grooves (7) are larger than the diameters of the stirring heads (6) positioned at two sides of the water limiting grooves (7); the two aerosol nozzles are symmetrically arranged along the axis of the aerosol cover.
2. The blending cooling device of claim 1, wherein the aerosol nozzle is in a clearance fit with the mist shroud, and the nozzle orientation is adjustable.
3. The stirring and cooling device of claim 1, wherein the lower end of the fog cover is connected with the water tank in an interference fit manner.
4. The stirring cooling device of claim 1, wherein the port diameter formed by the connection part of the upper part of the fog cover and the fixing frame is smaller than that of the lower part of the fog cover.
5. The stirring cooling device of claim 4, wherein the fog cover is formed in a way that the diameter of the fog cover is gradually increased along the direction from the upper port to the lower port of the fog cover, and the inner wall of the fog cover forms a curved surface.
6. A friction stir welding machine comprising the stirring cooling device of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710611504.0A CN107309541B (en) | 2017-07-25 | 2017-07-25 | Stirring cooling device and stirring friction welding machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710611504.0A CN107309541B (en) | 2017-07-25 | 2017-07-25 | Stirring cooling device and stirring friction welding machine |
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| Publication Number | Publication Date |
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| CN107309541A CN107309541A (en) | 2017-11-03 |
| CN107309541B true CN107309541B (en) | 2020-06-16 |
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| CN201710611504.0A Active CN107309541B (en) | 2017-07-25 | 2017-07-25 | Stirring cooling device and stirring friction welding machine |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110102873A (en) * | 2019-06-11 | 2019-08-09 | 南京航空航天大学 | A kind of stirring friction welding agitator head cooling device |
| CN113172332B (en) * | 2021-05-25 | 2022-08-09 | 孚斯威焊接科技(上海)有限公司 | Installation method, working method and system of liquid cooling friction stir welding tool clamping system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| KR100954190B1 (en) * | 2002-12-24 | 2010-04-21 | 재단법인 포항산업과학연구원 | Welding apparatus having a gas cooling means |
| CN102658420A (en) * | 2012-04-28 | 2012-09-12 | 沈阳航空航天大学 | Friction stir welding process method for ensuring small deformation and high mechanical properties in the assistance of cold control environment |
| CN104070287B (en) * | 2014-04-30 | 2016-05-18 | 燕山大学 | A kind of softening method of high strength alumin ium alloy friction stir welding and device of suppressing |
| EP3069812B1 (en) * | 2015-03-18 | 2017-11-29 | Helmholtz-Zentrum Geesthacht Zentrum für Material- und Küstenforschung GmbH | Apparatus for friction stir welding with a shoulder comprising first and second through holes |
| CN105328332B (en) * | 2015-12-05 | 2017-06-13 | 重庆镭宝激光智能机器人制造有限公司 | It is cut by laser the air exhaust cooling device of machine people |
| CN105689885B (en) * | 2016-04-14 | 2017-11-17 | 江苏科技大学 | Double-shaft shoulder agitating friction head water-cooling heat radiating device, agitating friction welder and method |
| CN106181017A (en) * | 2016-07-11 | 2016-12-07 | 中国船舶重工集团公司第七二五研究所 | A kind of friction stir welding method of corronil |
| CN106735856A (en) * | 2017-02-23 | 2017-05-31 | 江苏科技大学 | A kind of agitating friction head water cooling plant and method |
| CN106808083B (en) * | 2017-02-23 | 2022-08-26 | 江苏科技大学 | Double-shaft-shoulder friction stir head water cooling device and cooling method |
| CN106583917B (en) * | 2017-02-23 | 2022-07-19 | 江苏科技大学 | Gas-liquid combined cooling device and cooling method for double-shaft-shoulder stirring friction head |
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2017
- 2017-07-25 CN CN201710611504.0A patent/CN107309541B/en active Active
Non-Patent Citations (1)
| Title |
|---|
| 冷却方式对铝合金薄板搅拌摩擦焊接头性能的影响;李剑等;《有色金属工程》;20161231;第6卷(第6期);第6-8页 * |
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| CN107309541A (en) | 2017-11-03 |
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Application publication date: 20171103 Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Denomination of invention: Stirring cooling device and friction stir welding machine Granted publication date: 20200616 License type: Common License Record date: 20210714 |
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| EC01 | Cancellation of recordation of patent licensing contract | ||
| EC01 | Cancellation of recordation of patent licensing contract |
Assignee: Center for technology transfer Jiangsu University of Science and Technology Assignor: JIANGSU University OF SCIENCE AND TECHNOLOGY Contract record no.: X2021980006173 Date of cancellation: 20210826 |