A structure for automatically removing burrs after friction stir welding

Abstract

The utility model belongs to the technical field of friction stir welding, and in particular, is a structure for automatically removing burrs after friction stir welding. The utility model includes a milling cutter for removing weld burrs and a driving device connected to a welding spindle box of a friction stir welding machine, the driving device including a first driving member that enables the milling cutter to move along the Z-axis direction and a second driving member that drives the milling cutter to rotate; the milling cutter and the stirring needle of the friction stir welding machine are located on the same straight line. The utility model adds a burr removal structure to the welding spindle box of the friction stir welding machine, which is convenient for replacing manual burr removal and greatly improves work efficiency.

Description

Technical Field

[0001] The utility model belongs to the technical field of friction stir welding, and in particular relates to a structure for automatically removing burrs after friction stir welding. Background Art

[0002] The stirring pins applicable to the existing friction stir welding process are divided into integrated dynamic shoulder stirring pins and dynamic shoulder stirring pins. After the stirring pin completes the welding, flash, commonly known as burrs, will be left on the surface of the workpiece being stir friction welded.

[0003] Although the existing integrated dynamic shoulder stirring needle has an automatic deburring structure, that is, the needle head of the dynamic shoulder stirring needle is designed as a bevel structure, which can deburr while welding, but due to the error of the workpiece, there will be height fluctuations during welding, and the bevel structure is designed on the stirring needle, which is consistent with the height of the stirring needle and cannot change with the change of the workpiece height, which can easily lead to incomplete burr removal and require manual secondary removal; and the existing stationary shoulder stirring needle has a structure in which the stirring needle is inserted into the stationary shoulder, and the stationary shoulder will contact the workpiece during operation. Therefore, it cannot be designed as a bevel structure with self-deburring, and manual removal is required, which not only consumes labor time but also increases the process. Utility Model Content

[0004] In order to overcome the defects in the prior art, the utility model provides a structure for automatically removing burrs after friction stir welding. The utility model is convenient for quickly and automatically removing burrs after friction stir welding.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A structure for automatically removing burrs after friction stir welding comprises a milling cutter for removing weld burrs and a driving device connected to a welding spindle box of a friction stir welding machine, wherein the driving device comprises a first driving member that enables the milling cutter to move along a Z-axis direction and a second driving member that drives the milling cutter to rotate; the milling cutter and a stirring needle of the friction stir welding machine are located on the same straight line.

[0007] Preferably, the first driving member is fixedly connected to the welding spindle housing via a first mounting plate, the second driving member is transmission-connected to the driving end of the first driving member via a second mounting plate, and the milling cutter is mounted on the driving end of the second driving member.

[0008] Preferably, the second driving member is composed of a motor and a rotating shaft, the motor is mounted on the second mounting plate, one end of the rotating shaft is fixedly connected to the driving end of the motor, and the other end of the rotating shaft is detachably connected to the milling cutter.

[0009] Preferably, the milling cutter and the stirring needle are arranged in sequence along the length direction of the weld.

[0010] Preferably, the second drive member is a milling spindle.

[0011] Preferably, the first driving member is one of an electric cylinder and a pneumatic cylinder.

[0012] Preferably, the first driving member and the second driving member are both connected to a numerical control system of the friction stir welding machine.

[0013] Preferably, the axis of the milling cutter is parallel to the axis of the stirring needle.

[0014] The advantages of the utility model are:

[0015] The utility model adds a burr removal structure on the welding spindle box of the friction stir welding machine, which replaces manual burr removal and greatly improves work efficiency. In addition, the present application is not only applicable to one-piece dynamic shoulder stirring needles, but also to one-piece static shoulder stirring needles, which greatly expands the scope of application. Compared with the existing welding and milling equipment that requires an automatic tool changing system, the present device only needs manual milling cutter changing, which not only simplifies the process but also reduces the cost of use. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the structure of the utility model.

[0017] Figure 2 It is a schematic diagram of the side structure of the utility model.

[0018] Figure 3 It is a partially enlarged structural schematic diagram of the friction stir welding machine of the utility model.

[0019] The meanings of the symbols in the figure are as follows:

[0020] 1-friction stir welding machine, 2-welding spindle box, 3-first driving member, 4-second driving member, 5-milling cutter, 6-stirring needle. DETAILED DESCRIPTION

[0021] like Figure 1-3 As shown, a structure for automatically removing burrs after friction stir welding is shown, which is composed of a driving device and a milling cutter 5. The milling cutter 5 is detachably mounted on the driving device to facilitate the replacement of the milling cutter 5. The driving device is mounted on the welding spindle box 2 of the friction stir welding machine 1.

[0022] Specifically, the driving device includes a first driving member 3 and a second driving member 4. The first driving member 3 is fixedly connected to the welding spindle housing 2 through a first mounting plate, moves along the Z-axis direction with the welding spindle housing 2, and the first driving member 3 can drive the second driving member 4 to move along the Z-axis direction; a second mounting plate is mounted on the driving end of the first driving member 3, and the second driving member 4 is mounted on the second mounting plate, moves up and down with the first driving member 3, and the milling cutter 5 is mounted on the driving end of the second driving member 4, and the rotation of the milling cutter 5 is realized by the second driving member 4. In the utility model, the up and down movement of the milling cutter 5 and the rotation of the milling cutter 5 can be realized respectively by the first driving member 3 and the second driving member 4.

[0023] Furthermore, the second driving member 4 can be a milling spindle; the second driving member 4 can also be a rotating structure composed of a motor and a rotating shaft, the motor is mounted on the second mounting plate, one end of the rotating shaft is fixedly connected to the driving end of the motor, and the other end of the rotating shaft is detachably connected to the milling cutter 5. The first driving member 3 is one of an electric cylinder and a pneumatic cylinder. The first driving member 3 and the second driving member 4 are both connected to the numerical control system of the friction stir welding machine 1, and the numerical control system controls the operation of the first driving member 3 and the second driving member 4. The control of the first driving member 3 and the second driving member 4 can be achieved through code. During welding, the first driving member 3 drives the second driving member 4 to lift up, and the second driving member 4 stops working. When welding is completed, the first driving member 3 works after the welding spindle is lifted, and the first driving member 3 drives the second driving member 4 to move down, and the second driving member 4 starts working, so as to achieve the purpose of removing burrs.

[0024] Furthermore, the milling cutter 5 and the stirring pin 6 of the friction stir welding machine 1 are located on the same straight line and are arranged in sequence along the length direction of the weld. The axis of the milling cutter 5 is parallel to the axis of the stirring pin 6. When the stirring pin 6 completes the welding, the CNC system re-controls the friction stir welding machine 1 to work again along the welding route of the stirring pin 6, and the stirring pin 6 does not work. At this time, the milling cutter 5 works, and the rotating milling cutter 5 can remove the burrs in sequence. After experiments, the theoretical state can be reached, the burrs can be effectively removed and time can be saved.

[0025] In one embodiment, the automatic burr removal structure after friction stir welding in the present application is installed on a gantry-type friction stir welding device for welding standardized workpieces.

[0026] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A structure for automatically removing burrs after friction stir welding, characterized in that: The invention comprises a milling cutter (5) for removing weld burrs and a driving device connected to a welding spindle housing (2) of a friction stir welding machine (1), wherein the driving device comprises a first driving member (3) for moving the milling cutter (5) along a Z-axis direction and a second driving member (4) for driving the milling cutter (5) to rotate; the milling cutter (5) and a stirring needle (6) of the friction stir welding machine (1) are located on the same straight line.

2. The automatic burr removal structure after friction stir welding according to claim 1 is characterized in that: The first driving member (3) is fixedly connected to the welding spindle housing (2) via a first mounting plate, the second driving member (4) is transmission-connected to the driving end of the first driving member (3) via a second mounting plate, and the milling cutter (5) is mounted on the driving end of the second driving member (4).

3. The automatic burr removal structure after friction stir welding according to claim 2 is characterized in that: The second driving member (4) is composed of a motor and a rotating shaft. The motor is mounted on the second mounting plate. One end of the rotating shaft is fixedly connected to the driving end of the motor, and the other end of the rotating shaft is detachably connected to the milling cutter (5).

4. The automatic burr removal structure after friction stir welding according to claim 1 is characterized in that: The milling cutter (5) and the stirring needle (6) are arranged in sequence along the length direction of the weld.

5. The automatic burr removal structure after friction stir welding according to claim 1, characterized in that: The second driving member (4) is a milling spindle.

6. The automatic burr removal structure after friction stir welding according to claim 1, characterized in that: The first driving member (3) is one of an electric cylinder and a pneumatic cylinder.

7. The automatic burr removal structure after friction stir welding according to claim 1 is characterized in that: The first driving member (3) and the second driving member (4) are both connected to the numerical control system of the friction stir welding machine (1).

8. The automatic burr removal structure after friction stir welding according to claim 1, characterized in that: The axis of the milling cutter (5) is parallel to the axis of the stirring needle (6).

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