CN219852598U

CN219852598U - Combined stirring head

Info

Publication number: CN219852598U
Application number: CN202321156223.8U
Authority: CN
Inventors: 丁正大
Original assignee: Jiangsu Haizhuang Metal Molding Technology Co ltd
Current assignee: Jiangsu Haizhuang Metal Molding Technology Co ltd
Priority date: 2023-05-11
Filing date: 2023-05-11
Publication date: 2023-10-20
Anticipated expiration: 2033-05-11

Abstract

The utility model relates to the field of friction stir welding, and discloses a combined stirring head which comprises a shaft rod, wherein a threaded cylinder is fixed at the lower end of the shaft rod, a limit groove is formed in the lower end of the shaft rod, the limit groove penetrates through the threaded cylinder, a stirring needle is adaptively placed in the threaded cylinder, limiting blocks matched with the limit groove are fixed at two sides of one end, close to the shaft rod, of the stirring needle, and a shaft shoulder is connected to the outer side wall of the threaded cylinder in a threaded manner; this kind of novel be applied to combined type stirring head, through setting up shaft shoulder and stirring needle, stirring needle and shaft shoulder are the split setting, support the stirring needle with the axostylus axostyle tightly fixed through the threaded connection of shaft shoulder and screw thread section of thick bamboo, when stirring needle and shaft shoulder receive wearing and tearing need change, dismantle the shaft shoulder earlier can dismantle the stirring needle, change convenient operation swift like this.

Description

Combined stirring head

Technical Field

The utility model relates to the field of friction stir welding, in particular to a combined stirring head.

Background

Friction stir welding is a novel solid state welding technology, and the welding method has the advantages of low heat input, energy conservation, environmental protection, small residual stress and difficult deformation of a welding joint; the stirring head is used for stirring rapidly during welding, the weld joint grain size is relatively small, and the joint performance is good; and can realize mechanization, automation, safety and reliability. The stirring head is required to have high strength, hardness, toughness and thermal stability under welding conditions because of high heat load, force load and frictional wear in the welding process.

In the prior art, as in patent number CN215145643U, a combined stirring head for friction stir welding is provided, which comprises a hard alloy inner core and a polycrystalline cubic boron nitride coating layer sintered and fixed outside the hard alloy inner core, wherein the polycrystalline cubic boron nitride coating layer is in a step shape and comprises a large-diameter section and a small-diameter section, the small-diameter section forms a stirring pin, the large-diameter section forms a clamping handle, and one side end face of the large-diameter section forms a shaft shoulder. The novel structure increases the contact area between the hard alloy and the polycrystalline cubic boron nitride, is favorable for forming BCo compound at the interface between Co element and CBN in the alloy, and has higher bonding strength, so that the polycrystalline cubic boron nitride is firmly coated outside the hard alloy, and brittle fracture or deformation of the stirring head in the high-speed rotation process is avoided. The utility model not only utilizes the excellent physical and mechanical properties of the hard alloy, but also utilizes the good chemical inertia of the polycrystalline cubic boron nitride to form the combined stirring head with wear resistance on the outside and toughness on the inside, thereby reducing the use cost and prolonging the service life of the stirring head.

However, the stirring pin and the shaft shoulder are integrally formed after the current stirring pin and the shaft shoulder are searched, the stirring pin and the shaft shoulder are rubbed in operation and need to be replaced, and according to the prior art, as in the patent number CN214769645U, the stirring pin and the shaft shoulder are detached and installed, but the stirring pin is required to be stamped out for replacement through a metal rod inserted into a hole at the end part after the whole is taken down, and the operation is troublesome; thus, there is a need for a composable stirring head.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides a combined stirring head which at least solves one of the problems of the background art.

In order to achieve the above purpose, the present utility model provides the following technical solutions: the utility model provides a combinable stirring head, includes the axostylus axostyle, the lower extreme of axostylus axostyle is fixed with the screw thread section of thick bamboo, the spacing groove has been seted up to the lower extreme of axostylus axostyle, the spacing groove runs through the screw thread section of thick bamboo setting, the pin has been placed in the screw thread section of thick bamboo adaptation, the pin is close to the one end both sides of axostylus axostyle and is fixed with the stopper that matches with the spacing groove, threaded connection has the shaft shoulder on the lateral wall of screw thread section of thick bamboo.

The stirring pin is characterized in that a supporting ring is fixed on the outer wall of the stirring pin, and the supporting ring is in a wedge-shaped arrangement.

A further technical improvement of the utility model is that the support ring is positioned near the lower end of the screw barrel.

The utility model is further technically improved in that the outer wall of the shaft shoulder is fixedly connected with a disassembly and assembly block.

The utility model further provides a technical improvement that the dismounting block is arranged in a hexagonal mode.

The utility model further technically improves that the dismounting block is arranged at the upper part of the shaft shoulder.

The embodiment of the utility model provides a combined stirring head, which has the following beneficial effects:

this kind of novel be applied to combined type stirring head, through setting up shaft shoulder and stirring needle, stirring needle and shaft shoulder are the split setting, support the stirring needle with the axostylus axostyle tightly fixed through the threaded connection of shaft shoulder and screw thread section of thick bamboo, when stirring needle and shaft shoulder receive wearing and tearing need change, dismantle the shaft shoulder earlier can dismantle the stirring needle, change convenient operation swift like this.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model.

FIG. 1 is a schematic view of an overall structure of the present utility model;

FIG. 2 is a schematic view of the overall deployment structure of the present utility model;

FIG. 3 is a schematic view of the whole cross-sectional structure of the present utility model.

In the figure: 1. a shaft lever; 2. a thread cylinder; 3. a limit groove; 4. a shaft shoulder; 5. disassembling and assembling the block; 6. a stirring pin; 7. a limiting block; 8. and a support ring.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-3, a combinable stirring head comprises a shaft lever 1, a threaded cylinder 2 is fixed at the lower end of the shaft lever 1, a limit groove 3 is formed in the lower end of the shaft lever 1, the limit groove 3 penetrates through the threaded cylinder 2, a stirring needle 6 is adaptively placed in the threaded cylinder 2, limit blocks 7 matched with the limit groove 3 are fixed at two sides of one end, close to the shaft lever 1, of the stirring needle 6, and a shaft shoulder 4 is connected to the outer side wall of the threaded cylinder 2 in a threaded manner.

Specific working principle and implementation mode: compare prior art, in patent number CN215145643U and CN214769645U, the scheme of this design is mainly with axostylus axostyle 1, shaft shoulder 4 and stirring needle 6 split setting, wherein be fixed with screw thread section of thick bamboo 2 at the lower extreme of axostylus axostyle 1, limit groove 3 has been seted up on axostylus axostyle 1, limit groove 3 is the rectangle setting, and limit groove 3 runs through screw thread section of thick bamboo 2, the inner wall of stirring needle 6 and screw thread section of thick bamboo 2 is the adaptation setting, be fixed with the stopper 7 that matches with limit groove 3 in the one end both sides that stirring needle 6 is close to axostylus axostyle 1, pass screw thread section of thick bamboo 2 earlier, put into limit groove 3 in place spacing again, then with shaft shoulder 4 and screw thread section of thick bamboo 2 threaded connection, restrict stirring needle 6 and be fixed on axostylus axostyle 1, just so can be changed respectively when stirring needle 6 and shaft shoulder 4 receive wearing and tearing respectively, and compare the technical scheme in patent number CN214769645U need not dismantle the axostylus axostyle 1 and take out, and operate more convenient and fast, need not to help of other tools.

As shown in fig. 2, the outer wall of the stirring pin 6 is fixed with a supporting ring 8, the supporting ring 8 is in a wedge shape, the stirring pin 6 is firstly inserted into the threaded cylinder 2, and after the limiting block 7 is contacted with the limiting groove 3, the shaft shoulder 4 is in threaded connection with the threaded cylinder 2, the supporting ring 8 is extruded into the threaded cylinder 2 in the continuous rotation process of the shaft shoulder 4, the threaded cylinder 2 is slightly expanded outwards, so that the shaft shoulder 4 is connected with the threaded cylinder 2 more stably, and the shaft shoulder is not easy to loosen and fall off.

As shown in fig. 2, the support ring 8 is disposed near the lower end of the screw cylinder 2, so that the stirring pin 6 can be more easily inserted into the screw cylinder 2, and the support ring 8 is disposed near the lower end of the screw cylinder 2, so that the screw cylinder 2 can be expanded at the position where the expansion is most easily generated.

As shown in fig. 2 and 3, the outer wall of the shaft shoulder 4 is fixedly connected with a dismounting block 5, and since the outer wall of the shaft shoulder 4 is cylindrical, the dismounting block 5 is mounted on the shaft shoulder 4 to facilitate the dismounting and mounting of the shaft shoulder 4.

As shown in fig. 2, the disassembly and assembly block 5 is arranged in a hexagonal manner, the disassembly and assembly block 5 is in welded connection with the shaft shoulder 4, and the disassembly and assembly block 5 is arranged in a hexagonal manner and can be adapted to tools such as a wrench, so that the practicability is relatively strong, and the disassembly and assembly are more convenient.

As shown in FIG. 2, the dismounting block 5 is arranged at the upper part of the shaft shoulder 4, and because the lower end of the shaft shoulder 4 is worn during rotation, the dismounting block 5 is arranged at the upper part of the shaft shoulder 4, so that the wear of the outer wall of the dismounting block 5 during rotation can be avoided, and the trouble of dismounting is avoided.

The present utility model is not limited to the above embodiments, but is capable of modification and variation in all aspects, including those of ordinary skill in the art, without departing from the spirit and scope of the present utility model.

Claims

1. The utility model provides a combined stirring head, includes axostylus axostyle (1), its characterized in that, the lower extreme of axostylus axostyle (1) is fixed with screw thread section of thick bamboo (2), spacing groove (3) have been seted up to the lower extreme of axostylus axostyle (1), spacing groove (3) run through screw thread section of thick bamboo (2) and set up, pin (6) have been placed in the screw thread section of thick bamboo (2) adaptation, pin (6) are close to the one end both sides of axostylus axostyle (1) and are fixed with stopper (7) that match with spacing groove (3), threaded connection has shoulder (4) on the lateral wall of screw thread section of thick bamboo (2).

2. A combined stirring head according to claim 1, characterized in that the outer wall of the stirring pin (6) is fixed with a support ring (8), and the support ring (8) is wedge-shaped.

3. A combined stirring head according to claim 2, characterized in that the support ring (8) is arranged near the lower end of the screw barrel (2).

4. The combined stirring head according to claim 1, wherein the outer wall of the shaft shoulder (4) is fixedly connected with a disassembly and assembly block (5).

5. A combined stirring head according to claim 4, characterized in that the dismounting block (5) is arranged in a hexagonal shape.

6. A combined stirring head according to claim 5, characterized in that the dismounting block (5) is arranged in the upper part of the shaft shoulder (4).