Novel friction stir welding stirring head

Abstract

The utility model discloses a novel friction stir welding stirring head. A quick-change stirring needle square positioning hole and a quick-change stirring needle circular positioning hole are sequentially formed in a stirring head body from top to bottom. The quick-change stirring needle sequentially comprises a quick-change stirring needle square positioning surface, a quick-change stirring needle circular positioning surface and a quick-change stirring needle end part from top to bottom, a quick-change stirring needle locking bolt threaded hole is formed in the quick-change stirring needle square positioning surface, the quick-change stirring needle end part is of a conical structure with a wide upper part and a narrow lower part, and three cutting surfaces are arranged on the outer wall of the conical structure. The quick-change stirring needle square positioning surface and the quick-change stirring needle circular positioning surface are inserted into the stirring head body and are fastened through the quick-change stirring needle locking bolt. The friction stir welding device can effectively solve the problem of investment cost of welding consumables of friction stir welding, save enterprise operation cost and personnel health, improve production efficiency, improve working environment and further facilitate improvement of enterprise production competitiveness.

Description

Technical Field

[0001] The utility model relates to the technical field of friction stir welding, in particular to a new type of friction stir welding tool head. Background Art

[0002] At present, the consumables of the friction stir welding tool head adopt an integral structural design, which has defects such as high procurement and manufacturing costs, short welding life of the tool head, and faster wear of the stirring pin than the shoulder through comparison of service life replacement data during the production process, resulting in an increase in the cost of the friction stir welding tool head and a decrease in production efficiency. In order to reduce costs from the process and increase benefits, a tool head with a replaceable stirring pin is urgently needed to be studied. Summary of the Utility Model

[0003] The utility model provides a new type of friction stir welding tool head to solve the above problems.

[0004] To solve the above technical problems, the technical solution of the utility model is: a new type of friction stir welding tool head, including a tool head body. On the top of the tool head body, there are successively a tool connection circular installation limit and a tool connection square installation limit. A quick-change stirring pin locking bolt hole is opened in the tool connection circular installation limit. Inside the tool head body, there are successively opened a quick-change stirring pin square positioning hole and a quick-change stirring pin circular positioning hole from top to bottom; the quick-change stirring pin successively includes a quick-change stirring pin square positioning surface, a quick-change stirring pin circular positioning surface, and a quick-change stirring pin end. A quick-change stirring pin locking bolt threaded hole is opened in the quick-change stirring pin square positioning surface. The quick-change stirring pin end is a cone structure with a wider top and a narrower bottom. Three cutting surfaces are provided on the outer wall of the cone, and a positive and negative spiral stirring groove is opened. The quick-change stirring pin square positioning surface and the quick-change stirring pin circular positioning surface are inserted into the tool head body and fastened by a quick-change stirring pin locking bolt.

[0005] Further, a tool connection thread is opened in the tool connection square installation limit.

[0006] Further, the tool head body is a cone structure with a wider top and a narrower bottom.

[0007] Further, the tool connection square installation limit, the tool connection circular installation limit, and the tool head body are in a stepped structure with gradually increasing external dimensions.

[0008] Further, the quick-change stirring pin square positioning surface and the quick-change stirring pin circular positioning surface are in a stepped structure, and the external dimension of the quick-change stirring pin square positioning surface is smaller than that of the quick-change stirring pin circular positioning surface.

[0009] Further, the positive and negative spiral stirring grooves of the positive and negative spiral stirring grooves are crossed and arranged in a threaded manner.

[0010] The utility model can effectively solve the input cost of consumables for friction stir welding, save the operation cost of enterprises, ensure personnel health, improve productivity, improve the working environment, and further help to enhance the production competitiveness of enterprises. Description of the Drawings

[0011] Figure 1 is a schematic structural view of the utility model;

[0012] Figure 2 is the front view of the quick-change stirring pin;

[0013] Figure 3 is the bottom view of the quick-change stirring pin.

[0014] Wherein: 1. Stirring head body; 2. Tool connection thread; 3. Square installation limit for tool connection; 4. Circular installation limit for tool connection; 5. Locking bolt for quick-change stirring pin; 6. Quick-change stirring pin; 7. Square positioning surface of quick-change stirring pin; 8. End of quick-change stirring pin; 9. Threaded hole for locking bolt of quick-change stirring pin; 10. Circular positioning surface of quick-change stirring pin; 11. Positive and negative spiral stirring grooves. Specific Embodiments

[0015] The following further describes the specific embodiments of the utility model in conjunction with the attached Figures 1-3 drawings.

[0016] The novel friction stir welding stirring head includes a stirring head body 1, the stirring head body 1 is a conical structure with a wider top and a narrower bottom, the top of the stirring head body 1 is successively provided with a circular installation limit 4 for tool connection and a square installation limit 3 for tool connection. The square installation limit 3 for tool connection, the circular installation limit 4 for tool connection, and the stirring head body 1 are of a stepped structure with gradually increasing external dimensions. A tool connection thread 2 is provided in the square installation limit 3 for tool connection, and a locking bolt hole for the quick-change stirring pin is provided in the circular installation limit 4 for tool connection. A square positioning hole for the quick-change stirring pin and a circular positioning hole for the quick-change stirring pin are successively provided in the stirring head body 1 from top to bottom; the quick-change stirring pin 6 successively includes a square positioning surface 7 of the quick-change stirring pin, a circular positioning surface 10 of the quick-change stirring pin, and an end 8 of the quick-change stirring pin. The square positioning surface 7 of the quick-change stirring pin and the circular positioning surface 10 of the quick-change stirring pin are of a stepped structure, the external dimension of the square positioning surface 7 of the quick-change stirring pin is smaller than the external dimension of the circular positioning surface 10 of the quick-change stirring pin, a threaded hole 9 for the locking bolt of the quick-change stirring pin is provided in the square positioning surface 7 of the quick-change stirring pin, the end 8 of the quick-change stirring pin is a conical structure with a wider top and a narrower bottom, three cutting surfaces are provided on the outer wall of the cone, and positive and negative spiral stirring grooves 11 are provided. The positive and negative stirring grooves of the positive and negative spiral stirring grooves 11 cross and are arranged in a threaded manner. The square positioning surface 7 of the quick-change stirring pin and the circular positioning surface 10 of the quick-change stirring pin are inserted into the stirring head body 1 and fastened by a locking bolt 5 for the quick-change stirring pin.

[0017] Operation instructions: Take out the stirring head body 1 and the quick-change stirring needle 6, and manually install the quick-change stirring needle 6. After replacing the quick-change stirring needle 6 with different specifications according to the welding product process, tighten the locking bolt 5 of the quick-change stirring needle to ensure that the quick-change stirring needle 6 does not loosen. After the stirring head body 1 is installed on the stirring tool bar, welding operations can be carried out.

[0018] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent replacements or changes, and should be covered by the protection scope of the present invention.

Claims

1. A new type of friction stir welding stirring head, characterized in that: The invention comprises a stirring head body (1), wherein a tool connection circular installation limiter (4) and a tool connection square installation limiter (3) are sequentially arranged on the top of the stirring head body (1), a quick-change stirring needle locking bolt hole is provided in the tool connection circular installation limiter (4), and a quick-change stirring needle square positioning hole and a quick-change stirring needle circular positioning hole are sequentially provided in the stirring head body (1) from top to bottom; the quick-change stirring needle (6) comprises a quick-change stirring needle square positioning surface (7), a quick-change stirring needle circular positioning surface (10), and a quick-change stirring needle end (8) from top to bottom, a quick-change stirring needle square positioning surface (7) is provided in the quick-change stirring needle square positioning surface (7) and a quick-change stirring needle locking bolt threaded hole (9), the quick-change stirring needle end (8) is a cone structure which is wide at the top and narrow at the bottom, the outer wall of the cone is provided with three cutting surfaces, and a positive and negative spiral stirring groove (11) is provided, the quick-change stirring needle square positioning surface (7) and the quick-change stirring needle circular positioning surface (10) are inserted into the stirring head body (1) and fastened by the quick-change stirring needle locking bolt (5).

2. The novel friction stir welding stirring head according to claim 1 is characterized in that: A tool connection thread (2) is provided in the tool connection square installation limiter (3).

3. The novel friction stir welding stirring head according to claim 1 is characterized in that: The stirring head body (1) is a conical structure that is wide at the top and narrow at the bottom.

4. The novel friction stir welding stirring head according to claim 1 is characterized in that: The tool connection square installation limiter (3), the tool connection circular installation limiter (4), and the stirring head body (1) are stepped structures with outer dimensions increasing in sequence.

5. The novel friction stir welding stirring head according to claim 1 is characterized in that: The square positioning surface (7) of the quick-change stirring needle and the circular positioning surface (10) of the quick-change stirring needle are of stepped structures, and the outer dimensions of the square positioning surface (7) of the quick-change stirring needle are smaller than the outer dimensions of the circular positioning surface (10) of the quick-change stirring needle.

6. The novel friction stir welding stirring head according to claim 1 is characterized in that: The forward and reverse stirring tanks of the forward and reverse spiral stirring tank (11) are arranged in a cross-shaped and spiral manner.

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