CN212239598U - Friction stir welding actuator capable of flexibly adjusting welding thickness - Google Patents
Friction stir welding actuator capable of flexibly adjusting welding thickness Download PDFInfo
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- CN212239598U CN212239598U CN202021074168.4U CN202021074168U CN212239598U CN 212239598 U CN212239598 U CN 212239598U CN 202021074168 U CN202021074168 U CN 202021074168U CN 212239598 U CN212239598 U CN 212239598U
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Abstract
The utility model discloses a can realize friction stir welding executor of welding thickness flexible regulation, including the main shaft, the handle of a knife is installed to the lower extreme of main shaft, and the stirring instrument is installed to the lower extreme of handle of a knife, and the upper end cover of main shaft is equipped with electromagnetic sleeve, and the last cover of electromagnetic sleeve is equipped with the reservoir, is equipped with closed ring, spring in the reservoir, and the reservoir lower extreme is connected with the pipeline, and electromagnetic sleeve's up end is equipped with force sensor. The utility model has the advantages that: through the mode of adding liquid, the weight of dynamic adjustment friction stir welding executor, the dead weight that utilizes friction stir welding executor provides the upset power that needs when the stirring instrument welds, need not equipment and provide the upset power, and need not change the structure of friction stir welding executor or even whole friction stir welding equipment structure, practice thrift manufacturing and purchasing cost, need improve mechanical structure's rigidity problem when having solved the welding simultaneously, this simple structure, easily manufacturing, simultaneously applicable in the welding operation that needs different rigidity requirements.
Description
Technical Field
The utility model relates to a friction stir welding technical field specifically is a friction stir welding executor that can realize welding thickness flexible regulation.
Background
Friction stir welding is a solid-state joining technique of the utility model of the british welding technical research institute (TWI) in 1991, which is moved from the utility model to industrial large-scale application in a short time and is known as "a revolutionary welding technique again after laser welding" in the industry.
At present, the technology is widely applied to the manufacturing fields of aerospace, rail trains, ships, automobiles and the like, plays an important role in the development of light weight and electrification of automobiles, and is certainly applied to more industrial fields in the future.
The characteristics of solid state welding of friction stir welding determine that the upsetting force applied to a welded material by a stirring head in the welding process is much larger than that of fusion welding, and the required upsetting force is remarkably increased along with the increase of the yield strength of the welding material (such as titanium alloy, steel and the like) and the increase of the welding depth of the same material (such as 2-20 mm of aluminum alloy welding). Taking welding of 5083 aluminum alloy as an example, when welding 2mm, the upset force required is about 200kg, and when welding 20mm, the upset force required may be 2000 kg. The increased upset force associated with the increased depth of the weld requires rigidity of the mechanical structure to provide, and the greater the depth of the weld, the more massive the structure of the friction stir welding actuator, and the structure supporting the actuator, is required to provide the upset force required for the weld, which also increases procurement costs. Particularly, the robot friction stir welding which is developed vigorously is good in flexibility and strong in accessibility, but poor in rigidity, so that the welding thickness is limited, and only aluminum alloy which is not more than 8mm can be welded, and the development of the robot friction stir welding is limited.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a can realize friction stir welding executor of welding thickness flexible regulation to solve the problem that proposes in the above-mentioned background art.
In order to achieve the above object, the utility model provides a following technical scheme: the utility model provides a can realize friction stir welding executor of flexible regulation of welding thickness, includes the main shaft, the handle of a knife is installed to the lower extreme of main shaft, the stirring instrument is installed to the lower extreme of handle of a knife, the upper end cover of main shaft is equipped with electromagnetic sleeve, the cover is equipped with the reservoir on the electromagnetic sleeve, be equipped with closed ring, spring in the reservoir, the spring sets up in closed ring upper end and links to each other with the upper end of reservoir, the reservoir lower extreme is connected with the pipeline, electromagnetic sleeve's up end is equipped with force sensor.
Further preferably, the reservoir is a closed double-layer ring structure with a combined inner wall and an outer wall.
Further preferably, the liquid storage tank is axially provided with a bulge, and a liquid level sensor is arranged in the liquid storage tank.
Further preferably, the closed ring is designed to be an annular structure, and the size of the closed ring is the same as the annular size of the liquid storage tank.
Further preferably, the springs are multiple and uniformly arranged on the closed ring.
Further preferably, the spindle and the tool holder are provided with key grooves.
Further preferably, the electromagnetic sleeve is designed to be a cylindrical structure, a circular step is arranged at the upper end of the electromagnetic sleeve, and the liquid storage tank is installed on the circular step.
Further preferably, the pipeline is connected with a liquid storage device and a pressure pump.
Further preferably, the main shaft, the cutter handle, the liquid storage tank, the sealing ring and the electromagnetic sleeve are designed in a coaxiality mode.
Advantageous effects
The utility model discloses a can realize friction stir welding executor of welding thickness flexible regulation, through adding on the main shaft and establishing the reservoir, and add the mode of liquid, the weight of dynamic adjustment friction stir welding executor, the dead weight that utilizes the friction stir welding executor provides the upset forging power that needs when the stirring tool welds, need not equipment and provide the upset forging power, and need not change the structure of friction stir welding executor whole friction stir welding equipment structure even, practice thrift and make and purchasing cost, need improve mechanical structure's rigidity problem when having solved the welding simultaneously, the steam generator is simple in structure, easily manufacturing, simultaneously applicable in the welding operation that needs different rigidity requirements.
Drawings
Fig. 1 is a cross-sectional view of a friction stir welding actuator capable of flexibly adjusting a welding thickness according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a friction stir welding actuator capable of flexibly adjusting a welding thickness according to an embodiment of the present invention;
fig. 3 is a schematic view of a liquid storage tank structure disclosed in the embodiment of the present invention.
Reference numerals
The device comprises a main shaft 1, a cutter handle 2, a stirring tool 3, a liquid storage tank 4, a closed ring 5, a spring 6, a liquid level sensor 7, an electromagnetic sleeve 8, a force sensor 9 and a pipeline 10.
Detailed Description
The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.
As shown in fig. 1-3, a friction stir welding executor that can realize flexible regulation of welding thickness, includes main shaft 1, handle of a knife 2 is installed to main shaft 1's lower extreme, stirring instrument 3 is installed to handle of a knife 2's lower extreme, the upper end cover of main shaft 1 is equipped with electromagnetic sleeve 8, the cover is equipped with reservoir 4 on the electromagnetic sleeve 8, be equipped with closed ring 5, spring 6 in the reservoir 4, spring 6 sets up in closed ring 5 upper end and links to each other with reservoir 4's upper end, reservoir 4 lower extreme is connected with pipeline 10, electromagnetic sleeve 8's up end is equipped with force sensor 9.
Preferably, the liquid storage tank 4 is a closed double-layer ring structure with combined inner and outer walls and is used for storing liquid substances for changing the weight of the friction stir welding actuator.
Preferably, the liquid storage tank 4 is provided with a protrusion in the axial direction, the liquid level sensor 7 is arranged in the liquid storage tank, the liquid level sensor 7 can detect liquid level position information of liquid in the liquid storage tank 4 in real time and output the information in real time, the volume of the added liquid can be obtained according to a liquid level line, the weight of the liquid can be calculated according to a mass formula through the density of the liquid, and the weight is the weight of the additionally added friction stir welding actuator.
Preferably, the closed ring 5 is designed to be of an annular structure, the size of the closed ring is the same as the annular size of the liquid storage tank 4, the closed ring is used for sealing liquid substances in the liquid storage tank 4, the upper portion of the closed ring is connected with the spring 6, the volume of the input liquid is adjusted through the size relation between the elastic force provided by the contracted spring 6 and the pressure intensity of the input liquid, and further the weight of the friction stir welding actuator is changed.
Preferably, the springs 6 are uniformly arranged on the closed ring 5 in a plurality, the diameter of each spring 6 is smaller than the ring width of the closed ring 5, the elastic force generated by the contracted distance of each spring 6 is known, when liquid needs to be added into the liquid storage tank 4 so as to increase the weight of the friction stir welding actuator, the pressure applied by the external pressure pump to the liquid is larger than the elastic force of the spring 6, the contraction amount of the spring 6 is increased along with the increase of the liquid in the liquid storage tank 4, until the set elastic force generated by the contraction of the springs 6 is the same as the pressure of the liquid, the compression of the springs 6 is stopped, and the liquid is not input into the liquid storage tank 4 any more.
The spring 6 can also be one, and the diameter size of the spring 6 is larger than the inner diameter size of the closed ring 5 and smaller than the outer diameter size of the closed ring 5, and is sleeved in the liquid storage tank 4.
Preferably, key grooves are formed in the spindle 1 and the tool holder 2, and the spindle 1 and the tool holder 2 can transmit torque generated by the spindle 1 to the tool holder 2 and further transmit the torque to the stirring tool 3 through key connection, so that the stirring tool 3 can rotate.
Preferably, the electromagnetic sleeve 8 is designed to be a cylindrical structure, a circular step is arranged at the upper end of the electromagnetic sleeve, and the liquid storage tank 4 is installed on the circular step.
Preferably, the upper end face of the force sensor 9 is mounted on a head of the friction stir welding device or a flange of a robot arm, and the force sensor 9 can measure the reaction force of the welding material received by the whole mechanism during welding, so as to determine the weight and volume of the liquid to be added.
Preferably, the pipe 10 is connected with a liquid storage device and a pressure pump for providing required liquid and pressure of input liquid.
When the welding is finished, the pressure applied to the liquid is reduced to zero, the compressed spring 6 drives the closed ring to move downwards under the action of elastic force, the liquid in the liquid storage tank 4 is pressed out and flows back into the liquid storage device through the pipeline 10, and the liquid is recycled after being used next time, so that resources can be saved.
Preferably, the main shaft 1, the tool shank 2, the liquid storage tank 4, the closed ring 5 and the electromagnetic sleeve 8 adopt a coaxial design, so that the whole gravity center of the friction stir welding actuator is on the same axis, namely, the gravity center and the upsetting force are on the same axis, and the gravity can be used as the upsetting force for welding.
In this embodiment, the weight of the friction stir welding actuator is increased by inputting liquid into the liquid storage tank 4 and increasing the weight of the liquid storage tank 4, so that the weight of the whole friction stir welding actuator is increased. During the whole welding process, the gravity of the friction stir welding actuator added with liquid is ensured to be exactly equal to the upsetting force required by a stirring tool for welding, the mechanism for supporting the friction stir welding actuator does not need to provide the upsetting force for welding, but only provides the advancing resistance and the lateral force which need to be overcome when the friction stir welding actuator advances, and the two forces are smaller than the upsetting force and do not exceed 20% of the upsetting force.
In this embodiment, the welding method of the friction stir welding actuator capable of flexibly adjusting the welding thickness includes the following steps:
1) after the material and the thickness of the welding part are determined, according to a pressure value given by expert data of a welding process, determining the upsetting force required by the stirring tool 3 in the welding process, wherein the original weight of the friction stir welding actuator is reduced by the upsetting force, namely the weight of the liquid required to be added, converting the weight of the liquid into a volume according to the weight of the liquid, and converting the volume into the height of the liquid by dividing the sectional area;
2) the friction stir welding actuator moves to the position above a welding part, the main shaft 1 drives the tool holder 2 and the stirring tool 3 arranged on the tool holder 2 to rotate according to a set rotating speed, the stirring tool 3 starts to prick the welding part, at the moment, additional liquid is pressed into the liquid storage tank 4 through the pipeline 10 under the action of the pressure pump, the liquid drives the closed ring 5 to move upwards, and at the moment, the spring 6 is compressed;
3) the liquid level sensor 7 measures the liquid level position of the added liquid in real time, and when the liquid level of the liquid added into the liquid storage tank 4 under the action of the pressure pump reaches the set height, no new liquid is injected into the liquid storage tank 4;
4) in the process, the stirring tool 3 is continuously inserted into the welding part and reaches a set depth value, the force sensor 9 measures the reaction force of the welding material to the stirring tool 3 in real time, namely the upsetting force required to be applied by the stirring tool 3, after the welding material stays at the initial position for 3-5 s, the friction stir welding actuator operates according to a set welding track, and in the process, the volume of the added liquid is adjusted in real time according to the comparison between the force measured by the force sensor 9 in real time and the set pressure value;
5) when welding is finished, when the stirring tool 3 is gradually pulled away from a welding part, the applied pressure disappears, the elastic deformation of the spring 6 is released, the closed ring 5 is driven to move downwards, the liquid in the liquid storage tank 4 is pressed out through the pipeline 10, and finally the initial weight is recovered and the stirring tool moves to a safe position under the action of equipment, so that the welding is finished.
The welding parts can be made of aluminum alloy, magnesium alloy, copper alloy, steel and the like, and the preferred welding material is aluminum alloy. The friction stir welding actuator has the welding thickness of 0.3-80 mm for aluminum alloy, and the preferable welding thickness is 0.3-50 mm. Meanwhile, the rotating speed of the main shaft 1 of the friction stir welding actuator can be between 0 and 12000rpm, and the rotating speed of the main shaft 1 is preferably 200 and 12000 rpm.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that modifications may be made to the embodiments described in the foregoing embodiments, or equivalents may be substituted for elements thereof. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the content of the present invention within the protection scope of the present invention.
Claims (9)
1. The utility model provides a can realize friction stir welding executor of welding thickness flexible regulation, includes main shaft (1), handle of a knife (2) are installed to the lower extreme of main shaft (1), stirring instrument (3), its characterized in that are installed to the lower extreme of handle of a knife (2): the upper end cover of main shaft (1) is equipped with electromagnetic sleeve (8), the cover is equipped with reservoir (4) on electromagnetic sleeve (8), be equipped with closed ring (5), spring (6) in reservoir (4), spring (6) set up in closed ring (5) upper end and link to each other with the upper end of reservoir (4), reservoir (4) lower extreme is connected with pipeline (10), force sensor (9) are equipped with to the up end of electromagnetic sleeve (8).
2. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the liquid storage tank (4) is a closed double-layer annular structure with a combined inner wall and an outer wall.
3. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the liquid storage tank (4) is axially provided with a bulge, and a liquid level sensor (7) is arranged in the bulge.
4. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the closed ring (5) is designed by adopting an annular structure, and the size of the closed ring is the same as the annular size of the liquid storage tank (4).
5. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the springs (6) are uniformly arranged on the closed ring (5).
6. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: key grooves are processed on the main shaft (1) and the cutter handle (2).
7. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the electromagnetic sleeve (8) is designed in a cylindrical structure, a circular step is arranged at the upper end of the electromagnetic sleeve, and the liquid storage tank (4) is installed on the circular step.
8. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the pipeline (10) is connected with a liquid storage device and a pressure pump.
9. The friction stir welding actuator capable of realizing flexible adjustment of the welding thickness according to claim 1, wherein: the main shaft (1), the cutter handle (2), the liquid storage tank (4), the closed ring (5) and the electromagnetic sleeve (8) are coaxially designed.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202021074168.4U CN212239598U (en) | 2020-06-11 | 2020-06-11 | Friction stir welding actuator capable of flexibly adjusting welding thickness |
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| CN202021074168.4U CN212239598U (en) | 2020-06-11 | 2020-06-11 | Friction stir welding actuator capable of flexibly adjusting welding thickness |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643407A (en) * | 2022-05-19 | 2022-06-21 | 青云工业(辽宁)有限公司 | Pressure control method for welding seam of space cylinder structure by stirring friction welding of movable machine head |
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2020
- 2020-06-11 CN CN202021074168.4U patent/CN212239598U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114643407A (en) * | 2022-05-19 | 2022-06-21 | 青云工业(辽宁)有限公司 | Pressure control method for welding seam of space cylinder structure by stirring friction welding of movable machine head |
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