CN211219147U - Stirring pin rotating profile outward convex type stirring head - Google Patents
Stirring pin rotating profile outward convex type stirring head Download PDFInfo
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- CN211219147U CN211219147U CN201921868215.XU CN201921868215U CN211219147U CN 211219147 U CN211219147 U CN 211219147U CN 201921868215 U CN201921868215 U CN 201921868215U CN 211219147 U CN211219147 U CN 211219147U
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Abstract
The utility model discloses a stirring needle rotating profile protruding type stirring head outward, including clamping part, shaft shoulder and the stirring needle that connects gradually, the week side of stirring needle is equipped with the convex part that is used for the increase and weldment friction area of gaining in strength. The stirring head has the advantages of simple and reliable structure, capability of improving the strength, increasing the friction area and improving the welding speed.
Description
Technical Field
The utility model relates to a friction stir welding technique especially relates to a stirring pin rotating profile evagination type stirring head.
Background
In the process of friction stir welding, the mutual action between the stirring head and the workpiece material generates heat, the workpiece material around the stirring head is heated to a plasticized state to form a welding line, and the heat mainly comprises the friction heat generated between the shaft shoulder, the stirring needle and the base material and the plastic deformation heat generated by stirring and extruding the workpiece material. In the process of friction stir welding, the temperature field of the workpiece is not uniformly distributed, and the rule that the temperature at the shaft shoulder of the stirring head is highest and is sequentially decreased towards the end face of the stirring pin is presented.
The stirring head is the core of the stirring friction welding technology. It interacts with the welded workpiece to realize the connection of the welded material.
The size design of the stirring head has no mature theory, the stirring head is designed mostly according to experience, the stirring head mainly comprises a stirring pin, a shaft shoulder, a clamping area and the like, and the stirring pin is positioned at the top of the stirring head and has different shapes. The stirring pin generates partial heat energy through rotary friction, the main function of the stirring pin is similar to the function of a pump, the stirring pin can enable metal in a high plasticizing state to flow from front to back along the stirring pin while keeping up-and-down movement, and the metal is forged and cooled through a shaft shoulder of the stirring head to form a joint. The size of the stirring pin determines the size and the welding speed of the welding seam welding nuclear area structure; the shape of the stirring pin determines the heating mode and the mode of upsetting the plastic material in the welding process, and directly influences the flowing form of the softened material in the welding seam area, thereby playing an important role in forming the joint. The pin shape and size and related welding process parameters together determine the heat generation and material flow during welding, and ultimately the quality of the friction stir weld joint.
During the welding process of the common stirring head, the friction heat production is small because the surface area of the stirring pin is small, so that the material flow is small, the welding speed is small, and the improvement of the production benefit is not facilitated.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is to overcome the not enough of prior art, provide a simple structure reliable, can improve intensity and increase friction area, can improve the outer protruding type stirring head of stirring pin rotation profile of welding speed.
In order to solve the technical problem, the utility model discloses a following technical scheme:
the utility model provides a stirring needle rotating profile is protruding type stirring head outward, includes clamping part, shaft shoulder and the stirring needle that connects gradually, the week side of stirring needle is equipped with the convex part that is used for the increase intensity and increases with weldment friction area.
As a further improvement of the above technical solution:
the axial line of the stirring pin is defined as a rotation central line, the peripheral side outer contour line of the convex part is defined as a rotation generatrix, and the convex part is formed by rotating the rotation generatrix around the rotation central line in a circle.
The diameter of the tip portion of the pin is defined as L1, the diameter of the root portion of the pin is defined as L2, and the diameter of the circumferential outer contour of the projection is larger than L1 and L2.
The diameter L1 of the needle tip is smaller than the diameter L2 of the needle root.
The peripheral side outer contour line of the convex part is a section of smoothly-transitional outer convex arc line.
The peripheral side outer contour line of the convex part is formed by connecting a plurality of sections of convex circular arc lines.
The peripheral side outer contour line of the convex part is formed by connecting an outward convex arc line and an oblique line.
The circular arc line is close to the root part of the needle, and the oblique line is close to the tip part of the needle.
The circular arc line is close to the needle tip part, and the oblique line is close to the needle root part.
The peripheral side outer contour line of the convex part is formed by alternately connecting a plurality of sections of convex arc lines and a plurality of sections of straight lines, and the adjacent arc lines and the straight lines are connected to form the outer boss.
The peripheral side outer contour line of the convex part is formed by alternately connecting a plurality of straight lines, and adjacent straight lines are connected to form an outer boss.
Compared with the prior art, the utility model has the advantages of:
the utility model discloses protruding type stirring head outside stirring needle rotating profile, including clamping part, shaft shoulder and the stirring needle that connects gradually, the week side of stirring needle is equipped with the convex part that is used for the increase of high strength and weldment friction area. During welding, the clamping part is used for clamping, the stirring pin generates heat energy through rotary friction, and the shaft shoulder part is used for forming forging and pressing. Compared with the traditional structure, the stirring head is provided with the convex parts on the peripheral side of the stirring pin, namely the peripheral side outline of the stirring pin is convex, so that the strength of the stirring pin is improved correspondingly, and the welding speed is improved; meanwhile, the surface area of the stirring pin is increased by the convex part, so that the friction area with a welding piece is increased, the flowing of materials is facilitated, the welding speed is also facilitated to be improved, and the production benefit is improved; the structure is simple and reliable.
Drawings
Fig. 1 is a schematic perspective view of embodiment 1 of the present invention.
Fig. 2 is a schematic front view of embodiment 1 of the present invention.
Fig. 3 is a schematic diagram of a partially enlarged structure of embodiment 1 of the present invention.
Fig. 4 is a schematic structural view of a stirring pin in embodiment 1 of the present invention.
Fig. 5 is a schematic structural view of a stirring pin in embodiment 2 of the present invention.
Fig. 6 is a schematic structural view of a stirring pin in embodiment 3 of the present invention.
Fig. 7 is a schematic structural view of a stirring pin in embodiment 4 of the present invention.
Fig. 8 is a schematic structural view of a stirring pin in embodiment 5 of the present invention.
Fig. 9 is a schematic structural view of a stirring pin in embodiment 6 of the present invention.
The reference numerals in the figures denote:
1. a clamping portion; 2. a shaft shoulder; 3. a stirring pin; 31. a convex portion; 311. rotating the bus; 32. a center line of rotation; 33. a needle tip portion; 34. a needle root; 35. an outer boss.
Detailed Description
The invention will be described in further detail with reference to the drawings and specific examples.
Example 1:
fig. 1 to 4 show a first embodiment of the stirring pin rotating contour male type stirring head of the present invention, which comprises a clamping part 1, a shaft shoulder part 2 and a stirring pin 3 connected in sequence, wherein a convex part 31 for improving strength and increasing friction area with a weldment is arranged on the periphery side of the stirring pin 3. During welding, the clamping part 1 is used for clamping, the stirring pin 3 generates heat energy through rotary friction, and the shaft shoulder part 2 is used for forging. Compared with the traditional structure, the stirring head is provided with the convex part 31 on the peripheral side of the stirring pin 3, namely, the peripheral side outer contour line of the stirring pin 3 is convex, so that the strength of the stirring pin 3 is improved correspondingly, and the welding speed is improved; meanwhile, the convex part 31 increases the surface area of the stirring pin 3, thereby increasing the friction area with a weldment, being beneficial to the flowing of materials, being beneficial to improving the welding speed and improving the production benefit; the structure is simple and reliable, and the device is suitable for structural products with poor hard plasticizing performance and high heat production requirement of metals, thick plates and materials with high melting points such as titanium, copper and steel.
In the present embodiment, the axis of the probe 3 is defined as the rotation center line 32, the circumferential outer contour of the convex portion 31 is defined as the rotation generatrix 311, and the convex portion 31 is formed by rotating the rotation generatrix 311 once around the rotation center line 32. The projection 31 is integrally formed by rotating the rotation bus 311 around the rotation center line 32, and the overall strength is improved.
In the present embodiment, the diameter of the needle tip portion 33 of the probe 3 is defined as L1, the diameter of the needle root portion 34 of the probe 3 is defined as L2, and the circumferential outer contour diameter of the convex portion 31 is larger than L1 and L2. That is, the circumferential outer contour of the convex portion 31 is always located outside the connecting line between the outer contour of the needle tip portion 33 and the outer contour of the needle root portion 34, thereby enhancing the strength of the agitating needle 3.
In this embodiment, the diameter L1 of the needle tip 33 is smaller than the diameter L2 of the needle root 34. The whole stirring needle 3 is in a conical structure due to the arrangement, and the forging pressure is improved.
In this embodiment, the peripheral side outer contour of the convex portion 31 is a smoothly transitional convex arc line. In this structure, the circumferential outer contour of the convex portion 31 is formed of a single curve, and the structure is simple and easy to mold.
Example 2:
as shown in fig. 5, the second embodiment of the pin tumbler rotating profile male pin tumbler of the present invention is substantially the same as embodiment 1 except that: in this embodiment, the peripheral side outer contour of the convex portion 31 is formed by connecting a plurality of convex circular arcs. In this configuration, the circumferential outer contour of the convex portion 31 is formed of a plurality of curves, and the structure is simple and reliable.
Example 3:
as shown in fig. 6, the third embodiment of the pin tumbler rotating profile male pin tumbler of the present invention is substantially the same as embodiment 1 except that: in the present embodiment, the peripheral side outer contour of the convex portion 31 is formed by connecting a convex arc line and a slant line. In this configuration, the circumferential outer contour of the convex portion 31 is formed by a combination of curved oblique lines, and the configuration is simple and reliable.
In this embodiment, the circular arc line is close to the needle root 34, and the oblique line is close to the needle tip 33. The structure is simple and easy.
Example 4:
as shown in fig. 7, the fourth embodiment of the pin tumbler rotating profile male pin tumbler of the present invention is substantially the same as embodiment 3 except that: in this embodiment, the circular arc line is close to the needle tip portion 33, and the oblique line is close to the needle root portion 34. The structure is simple and easy.
Example 5:
as shown in fig. 8, the fifth embodiment of the pin tumbler rotating contour male pin tumbler of the present invention is substantially the same as embodiment 1 except that: in this embodiment, the peripheral side outer contour of the convex portion 31 is formed by alternately connecting a plurality of convex circular arcs and a plurality of straight lines, and the adjacent circular arcs and straight lines are connected to form the outer boss 35. In the structure, the peripheral side outer contour line of the convex part 31 is alternately connected with a plurality of straight lines through a plurality of sections of convex circular arcs to form a stepped structure with the outer boss 35, so that the forging pressure is further improved while the strength is improved.
Example 6:
as shown in fig. 9, the sixth embodiment of the pin tumbler rotating profile male pin tumbler of the present invention is substantially the same as embodiment 5 except that: in this embodiment, the peripheral outer contour of the convex portion 31 is formed by alternately connecting a plurality of straight lines, and the outer boss 35 is formed by connecting adjacent straight lines. In this structure, the circumferential outer contour of the convex portion 31 is alternately connected by a plurality of straight lines to form a stepped structure with the outer boss 35, thereby improving the strength and further improving the forging pressure.
Although the present invention has been described with reference to the preferred embodiments, it is not intended to limit the present invention. The technical solution of the present invention can be used by anyone skilled in the art to make many possible variations and modifications, or to modify equivalent embodiments, without departing from the scope of the technical solution of the present invention, using the technical content disclosed above. Therefore, any simple modification, equivalent change and modification made to the above embodiments by the technical entity of the present invention should fall within the protection scope of the technical solution of the present invention.
Claims (11)
1. The utility model provides a protruding type stirring head outside stirring needle rotating profile, includes clamping part (1), shaft shoulder (2) and stirring needle (3) that connect gradually, its characterized in that: the periphery of the stirring pin (3) is provided with a convex part (31) for improving the strength and increasing the friction area with a weldment.
2. The pin rotating profile male pin mixer head of claim 1 wherein: the axis of the stirring pin (3) is defined as a rotation center line (32), the peripheral side outer contour line of the convex part (31) is defined as a rotation bus (311), and the convex part (31) is formed by rotating the rotation bus (311) around the rotation center line (32).
3. The pin rotating profile male pin mixer head of claim 2 wherein: the diameter of the tip part (33) of the stirring pin (3) is defined as L1, the diameter of the root part (34) of the stirring pin (3) is defined as L2, and the peripheral side outer contour diameter of the convex part (31) is larger than L1 and L2.
4. The pin rotating profile male pin mixer head of claim 3 wherein: the diameter L1 of the needle tip (33) is smaller than the diameter L2 of the needle root (34).
5. The pin rotating profile male mixing head according to any one of claims 1 to 4, wherein: the peripheral side outer contour line of the convex part (31) is a section of smoothly-transitional convex arc line.
6. The pin rotating profile male mixing head according to any one of claims 1 to 4, wherein: the peripheral side outer contour line of the convex part (31) is formed by connecting a plurality of sections of convex circular arc lines.
7. A pin rotating profile male pin tumbler according to claim 3 or 4, wherein: the peripheral side outer contour line of the convex part (31) is formed by connecting an outward convex arc line and an oblique line.
8. The pin rotating profile male pin tumbler according to claim 7, wherein: the circular arc line is close to the needle root part (34), and the oblique line is close to the needle tip part (33).
9. The pin rotating profile male pin tumbler according to claim 7, wherein: the circular arc line is close to the needle tip part (33), and the oblique line is close to the needle root part (34).
10. The pin rotating profile male mixing head according to any one of claims 1 to 4, wherein: the peripheral side outer contour line of the convex part (31) is formed by alternately connecting a plurality of sections of convex circular arc lines and a plurality of sections of straight lines, and the adjacent circular arc lines and the straight lines are connected to form an outer boss (35).
11. The pin rotating profile male mixing head according to any one of claims 1 to 4, wherein: the peripheral side outer contour line of the convex part (31) is formed by alternately connecting a plurality of straight lines, and adjacent straight lines are connected to form an outer boss (35).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868215.XU CN211219147U (en) | 2019-10-31 | 2019-10-31 | Stirring pin rotating profile outward convex type stirring head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921868215.XU CN211219147U (en) | 2019-10-31 | 2019-10-31 | Stirring pin rotating profile outward convex type stirring head |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211219147U true CN211219147U (en) | 2020-08-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921868215.XU Active CN211219147U (en) | 2019-10-31 | 2019-10-31 | Stirring pin rotating profile outward convex type stirring head |
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| CN (1) | CN211219147U (en) |
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2019
- 2019-10-31 CN CN201921868215.XU patent/CN211219147U/en active Active
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