CN216607610U - Constant upsetting force dip-free friction stir welding tool - Google Patents
Constant upsetting force dip-free friction stir welding tool Download PDFInfo
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- CN216607610U CN216607610U CN202122599837.0U CN202122599837U CN216607610U CN 216607610 U CN216607610 U CN 216607610U CN 202122599837 U CN202122599837 U CN 202122599837U CN 216607610 U CN216607610 U CN 216607610U
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- 238000003466 welding Methods 0.000 title claims abstract description 68
- 238000003756 stirring Methods 0.000 title claims abstract description 56
- 238000007906 compression Methods 0.000 claims abstract description 23
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- 230000005540 biological transmission Effects 0.000 claims abstract description 16
- 238000006073 displacement reaction Methods 0.000 claims 1
- 125000006850 spacer group Chemical group 0.000 claims 1
- 238000000034 method Methods 0.000 abstract description 20
- 230000008569 process Effects 0.000 abstract description 18
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000003801 milling Methods 0.000 description 10
- 239000000463 material Substances 0.000 description 5
- 230000007547 defect Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 239000011777 magnesium Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 239000007790 solid phase Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
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Abstract
The utility model discloses a constant upsetting force dip-free friction stir welding tool, which comprises a replaceable stirring head, a screw, a floating sleeve, a clamping ring, a compression spring, a fixed sleeve, a tool handle and a transmission key, wherein the replaceable stirring head is fixed on the tool handle; the replaceable stirring head is connected with the floating sleeve through a screw, the floating sleeve can axially slide in the knife handle, and a key groove is formed in the floating sleeve and connected with the knife handle through a transmission key; the compression spring is arranged in the floating sleeve, and the fixed sleeve is arranged on the knife handle; the retainer ring is arranged in the clamp groove of the tool handle; the tool holder is used for installing the fixed sleeve, the compression spring, the floating sleeve and the clamping ring, and the tail end of the tool holder is in taper connection with a main shaft of the machine tool. The utility model improves the welding quality, stabilizes the quality of the welding process and reduces the maintenance cost of equipment.
Description
Technical Field
The utility model relates to the technical field of friction stir welding, in particular to a constant upsetting force non-inclination friction stir welding tool.
Background
The friction stir welding is a novel solid phase connection technology, has the advantages of low cost, high efficiency, green, high weld quality and the like, and is particularly suitable for welding various light alloy materials such as aluminum, magnesium, titanium and the like. At present, friction stir welding is widely applied to the manufacturing process of light structural members in the industries of aerospace, shipbuilding, automobiles and the like so as to meet increasingly rigorous lightweight requirements.
The traditional friction stir welding process is realized in a mode of having an inclination angle, a stirring tool constantly keeps an inclination angle of 2-5 degrees with the normal direction of the surface of a workpiece and follows along the tangential direction of a welding line, as shown in fig. 1 and fig. 2, a stirring head 11, a workpiece 12 to be welded and the welding line 13 are arranged, a represents axial pressure, b represents the rotation direction of the stirring head, c represents the moving direction of the stirring head, e represents the press-in amount, and f represents the inclination angle of the stirring head. In addition to the machine tool itself X, Y, Z having three axes, the apparatus also requires angular and circumferential follower axis movements. The presence of the angle of inclination allows material ahead of the tool to enter under the shoulder of the tool and be restrained, enabling the friction stir welding process to be carried out. The constant control of the upsetting force is realized by a sensor and a servo mechanism which are arranged on the main shaft.
By adopting a non-inclination angle mode, an inclination angle shaft and a circumferential follow-up C shaft are not needed, the friction stir welding process can be realized only on a numerical control milling machine based on a three-shaft linkage system, and special expensive five-shaft friction stir welding equipment is not needed, as shown in fig. 3. At present, the three-axis numerical control milling machine is widely applied to various manufacturing enterprises, so that the dip-free friction stir welding can be widely applied at low cost.
When friction stir welding is performed on a numerically controlled milling machine based on a three-axis linkage system, a stirring head is directly clamped on a tool shank, and welding is performed at a constant rotating speed and a constant feeding amount in a welding process, as shown in fig. 4, the friction stir welding tool comprises a milling machine workbench 21, a stirring head 22, a workpiece 23 to be welded, a welding seam 24, a tool shank 25 and a milling machine spindle 26.
The friction stir welding performed on the numerically controlled milling machine based on the three-axis linkage system has a problem in that the press-in amount during actual welding is a dynamic change process due to the influence of the thickness deviation of the plate and the clamping error, and the dynamic change of the press-in amount causes the change of the upsetting force, as shown in fig. 5.
If the axial press-in amount is insufficient, the upsetting force is insufficient, the upsetting and compacting effect of the welding seam material is poor, and the welding defect is easily generated. Therefore, the weld material must be upset and compacted with a sufficient amount of penetration.
If the axial pressing amount is too large, the upsetting force is too large, a large reverse acting force is generated on the main shaft of the equipment, and the main shaft of the three-shaft numerical control milling machine is not provided with an upsetting force constant control mechanism, so that the equipment is easily damaged.
SUMMERY OF THE UTILITY MODEL
The utility model aims to overcome the defects of the prior art, provides a constant upsetting force non-inclination friction stir welding tool, improves the welding quality, stabilizes the quality of the welding process, reduces the equipment maintenance cost and the like.
The purpose of the utility model is realized by the following scheme:
a constant upsetting force dip-free friction stir welding tool comprises a replaceable stirring head, a screw, a floating sleeve, a clamping ring, a compression spring, a fixed sleeve, a tool handle and a transmission key; the replaceable stirring head is connected with the floating sleeve through a screw, the floating sleeve can axially slide in the knife handle, and a key groove is formed in the floating sleeve and connected with the knife handle through a transmission key; the compression spring is arranged in the floating sleeve, and the fixed sleeve is arranged on the knife handle; the clamping ring is arranged in the clamping groove of the tool handle; the tool holder is used for installing a fixed sleeve, a compression spring, a floating sleeve and a clamping ring, and the tail end of the tool holder is in taper connection with a main shaft of a machine tool.
Further, the floating sleeve is used for fixing the replaceable stirring head.
Furthermore, three equally-divided key grooves are formed in the floating sleeve, three key grooves are formed in the cutter handle, the three key grooves in the floating sleeve are aligned with the three key grooves in the cutter handle, and transmission keys are mounted on the three key grooves to transmit welding torque.
Further, the collar is used for preventing the fixing sleeve from axially displacing.
Furthermore, the fixed sleeve is arranged on the outer cylinder of the knife handle, and the transmission key is prevented from falling off.
Further, a shim is included; and an adjusting gasket with corresponding thickness is arranged in the sleeve of the tool holder according to the calculated compression amount, so that the magnitude of the upsetting force can be set.
The utility model has the beneficial effects that:
according to the utility model, the automatic feedback and adjustment of the upsetting force in the non-inclination angle friction stir welding process are carried out on the numerical control milling machine based on the three-axis linkage system, so that the welding upsetting force is kept constant, the welding defect caused by insufficient upsetting force when the press-in amount is too small is avoided, and the welding quality is improved. Meanwhile, the defects of large flash and damage to equipment caused by excessive upsetting force when the pressing amount is too large are avoided, the quality of the welding process is stable, and the maintenance cost of the equipment is reduced.
Drawings
The drawings in the following description are only some embodiments of the utility model, and other drawings can be derived by those skilled in the art without inventive exercise.
FIG. 1 is a first schematic view of a welding process employing a conventional friction stir weld configuration;
FIG. 2 is a second schematic illustration of a welding process using a conventional friction stir welding configuration;
FIG. 3 is a schematic view of a welding process using a conventional non-inclined friction stir welding configuration;
FIG. 4 is a schematic structural view of friction stir welding performed on a numerically controlled milling machine of a three-axis linkage system;
FIG. 5 is a schematic view showing a variation in press-in amount during actual welding of friction stir welding on a numerically controlled milling machine using a shaft linkage system;
FIG. 6 is a schematic block diagram of the present invention for achieving automatic constancy of upset force during welding;
FIG. 7 is a schematic structural view of the present invention;
in the figure, 1-replaceable stirring head, 2-screw, 3-floating sleeve, 4-retainer ring, 5-compression spring, 6-fixed sleeve, 7-knife handle, 8-transmission key and 9-adjusting gasket.
Detailed Description
All of the features disclosed in all of the embodiments in this specification, or all of the steps in all of the methods or processes implicitly disclosed, may be combined or substituted in any way, except where mutually exclusive features and/or steps are present.
Examples
As shown in fig. 6 and 7, the constant upsetting force non-inclination friction stir welding tool comprises a replaceable stirring head 1, a screw 2, a floating sleeve 3, a retainer ring 4, a compression spring 5, a fixed sleeve 6, a tool shank 7 and a transmission key 8; the replaceable stirring head 1 is connected with the floating sleeve 3 through a screw 2, the floating sleeve 3 can axially slide in the knife handle 7, and the floating sleeve 3 is provided with a key groove and is connected with the knife handle 7 through a transmission key 8; the compression spring 5 is arranged in the floating sleeve 3, and the fixed sleeve 6 is arranged on the knife handle 7; the retainer ring 4 is arranged in a clamping groove of the tool shank 7; the tool shank 7 is used for installing the fixed sleeve 6, the compression spring 5, the floating sleeve 3 and the clamping ring 4, and the tail end of the tool shank 7 is connected to a main shaft of a machine tool in a taper mode.
In another embodiment of the present invention, it should be noted that the floating sleeve 3 is used to fix the replaceable agitator head 1.
In another embodiment of the present invention, three equal-dividing key grooves are formed in the floating sleeve 3, three key grooves are formed in the tool shank 7, the three key grooves in the floating sleeve 3 are aligned with the three key grooves in the tool shank 7, and the transmission key 8 is mounted on the three key grooves to transmit the welding torque.
In other embodiments of the present invention, it should be noted that the collar 4 is used to prevent the fixing sleeve 6 from being axially displaced.
In another embodiment of the present invention, it should be noted that the fixing sleeve 6 is mounted on the outer cylinder of the tool holder 7 to prevent the transmission key 8 from falling off.
In other embodiments of the present invention, the adjustment pad 9; adjusting gaskets 9 with corresponding thickness are arranged in the sleeve of the tool shank 7 according to the calculated compression amount, and the magnitude of the upsetting force is set
The working principle of the utility model is as follows: the structure of the utility model is shown in figure 7, and comprises a replaceable stirring head 1 which is used for friction stir welding and is connected with a floating sleeve 3 through a screw 2; the floating sleeve 3 is used for fixing the stirring head, can axially slide in the tool shank, is provided with three equally-divided key grooves, is connected with the tool shank 7 through a transmission key 8 and transmits welding torque; the compression spring 5 is used for automatically adjusting the axial position of the replaceable stirring head 1 according to the upsetting force and is arranged in the floating sleeve 3; the adjusting shim 9 is used for adjusting the pre-compression amount of the spring to reach a set upsetting force; the fixed sleeve 6 is arranged on the outer cylinder of the knife handle 7 and prevents the transmission key 8 from falling off; the clamping ring 4 is used for preventing the fixing sleeve 6 from axially moving and is arranged in the clamping groove of the tool shank 7; and the tool shank 7 is used for installing the fixed sleeve 6, the compression spring 5, the floating sleeve 3 and the clamping ring 4, and the tail end of the tool shank is in taper connection with a main shaft of a machine tool.
The assembly process of the tool of the utility model: the replaceable stirring head 1 and the floating sleeve 3 are positioned by a hole shaft, an end face key and a key groove and are connected by a screw 2. And an adjusting gasket 9 with corresponding thickness is arranged in the sleeve of the tool shank 7 according to the calculated compression amount, and the magnitude of the upsetting force is set. And a compression spring 5 is arranged in a hole at the tail part of the floating sleeve 3, is arranged in a sleeve of the knife handle 7 together with the floating sleeve 3, and is used for adjusting the radial position of the floating sleeve 3 to align three key slots on the floating sleeve 3 with three key slots on the knife handle 7 and installing a transmission key 8 on the three key slots. A fixed sleeve 6 is sleeved on the knife handle, and a clamping ring 4 is installed to limit the axial movement of the fixed sleeve. When the welding tool is used, the assembled welding tool is arranged on the main shaft, the part to be welded is arranged on the fixture, the welding rotating speed, the feeding amount and the welding pressing-in amount are set, and welding is started. In the welding process, when the pressing-in amount is reduced, the welding upsetting force is smaller than a set value, the compression spring extends, the friction stir welding head is pressed into the welded material, the pressing-in amount is increased, and the upsetting force is increased to reach the set value. In the welding process, when the press-in amount is increased, the welding upsetting force is larger than a set value, the compression spring is shortened, the friction stir welding head is pulled out of the welded material, the press-in amount is reduced, the upsetting force is increased and reduced, and the set value is reached. Through the feedback and regulation processes, the automatic constancy of the upsetting force in the welding process is realized.
Other embodiments than the above examples may be devised by those skilled in the art based on the foregoing disclosure, or by adapting and using knowledge or techniques of the relevant art, and features of various embodiments may be interchanged or substituted and such modifications and variations that may be made by those skilled in the art without departing from the spirit and scope of the present invention are intended to be within the scope of the following claims.
Claims (6)
1. A constant upsetting force dip-free friction stir welding tool is characterized by comprising a replaceable stirring head (1), a screw (2), a floating sleeve (3), a clamping ring (4), a compression spring (5), a fixed sleeve (6), a tool handle (7) and a transmission key (8); the replaceable stirring head (1) is connected with a floating sleeve (3) through a screw (2), the floating sleeve (3) can axially slide in a cutter handle (7), a key groove is formed in the floating sleeve (3), and the floating sleeve is connected with the cutter handle (7) through a transmission key (8); the compression spring (5) is arranged in the floating sleeve (3), and the fixed sleeve (6) is arranged on the knife handle (7); the clamping ring (4) is arranged in a clamping groove of the tool handle (7); the tool handle (7) is used for installing the fixed sleeve (6), the compression spring (5), the floating sleeve (3) and the clamping ring (4), and the tail end of the tool handle (7) is in taper connection with a main shaft of a machine tool.
2. A constant upset force, tilt angle free friction stir welding tool according to claim 1 wherein the floating sleeve (3) is used to secure the replaceable stir head (1).
3. The constant upset force non-inclination friction stir welding tool according to claim 1, characterized in that three equally divided key slots are arranged on the floating sleeve (3), three key slots are arranged on the shank (7), the three key slots on the floating sleeve (3) are aligned with the three key slots on the shank (7), and a transmission key (8) is arranged on the three key slots to transmit welding torque.
4. A constant upset force, non-rake friction stir welding tool according to claim 1 wherein the collar (4) is adapted to prevent axial displacement of the retaining sleeve (6).
5. The constant upset force non-tilt angle friction stir welding tool according to claim 1, wherein the fixing sleeve (6) is mounted on the outer cylinder of the shank (7) to prevent the drive key (8) from falling off.
6. A constant upset force, inclination free friction stir welding tool according to any one of claims 1 to 5 including a spacer (9); and an adjusting gasket (9) with corresponding thickness is arranged in the sleeve of the tool shank (7) according to the calculated compression amount, so that the magnitude of the upsetting force can be set.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122599837.0U CN216607610U (en) | 2021-10-27 | 2021-10-27 | Constant upsetting force dip-free friction stir welding tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122599837.0U CN216607610U (en) | 2021-10-27 | 2021-10-27 | Constant upsetting force dip-free friction stir welding tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216607610U true CN216607610U (en) | 2022-05-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122599837.0U Active CN216607610U (en) | 2021-10-27 | 2021-10-27 | Constant upsetting force dip-free friction stir welding tool |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216607610U (en) |
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2021
- 2021-10-27 CN CN202122599837.0U patent/CN216607610U/en active Active
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