Double-head and double-sided friction stir welding equipment with high efficiency, and welding method thereof

Abstract

The invention discloses double-head and double-sided friction stir welding equipment with high efficiency, and a welding method thereof. The equipment comprises a base, upright columns, an upper crossbeam, a lower cross beam, at least one working table, visual sensors and a CNC controller; the upper cross beam is provided with an upper head, and the lower cross beam is provided with a lower head;the upright columns, the upper cross beam and the lower cross beam form a portal frame of an integral structure, and the upper head and the lower head can be moved along an X axis, a Y axis and a Z axis, and rotated along the Z axis through a driving device and a transmission mechanism; the working table is connected with the horizontal plane of the base, and the working table is located betweenthe upper head and the lower head; the working table and the portal frame can be moved relatively for achieving welding, and the visual sensors are installed on the upper head and the lower head, andused for navigation and identification of weld joints; and the CNC controller is used for controlling the portal frame, the upper head, the lower head, the working table and the visual sensors to work.

Description

technical field

[0001] The invention belongs to the technical field of friction stir welding welding equipment, in particular to a double-head double-sided high-efficiency friction stir welding equipment and a welding method thereof. Background technique

[0002] Since the invention of friction stir welding, friction stir welding technology has received extensive attention and in-depth research, especially for aluminum alloy materials. Research institutions, schools and large companies around the world have carried out in-depth and detailed research and engineering application development. Especially in recent years, friction stir welding has been successfully applied in rail transit and shipping industry.

[0003] In the process of friction stir welding of aluminum alloy plates or profiles, the welding scheme adopts one side welding and then turns over the parts to complete the other side welding. This welding method will make it difficult to control the welding deformatio...

Examples

Embodiment 1

[0040] Embodiment 1: as figure 1 , 3 , 4, the friction stir welding equipment of this embodiment comprises: a base 1, a pair of columns 2 arranged on the base 1, an upper beam 3 connected to the top of the column 2, an upper head 5 is arranged on the upper beam 3, The lower crossbeam 4 connected between the lower ends of the columns 2 is provided with a lower head 6 corresponding up and down with the upper head 5 on the lower crossbeam 4 .

[0041] Among them, the column 2, the upper beam 3 and the lower beam 4 form a gantry frame with an integral structure, and the upper machine head 5 and the lower machine head 6 can move along the X axis, Y axis and Z axis through the driving device and the transmission mechanism, and move along the Z axis. Rotation, the movement of the upper head 5 and the lower head 6 on the X-axis and Y-axis is driven by a linear motor, and the screw guide rail or rack-and-pinion guide rail is driven. The upper head 5 and the lower head 6 can move on th...

Embodiment 2

[0049] Embodiment 2: as figure 2 , 3 As shown in . The lower crossbeam 4 connected between the lower ends of the columns 2 is provided with a lower head 6 corresponding up and down with the upper head 5 on the lower crossbeam 4 .

[0050] Among them, the column 2, the upper beam 3 and the lower beam 4 form a gantry frame with an integral structure, and the upper machine head 5 and the lower machine head 6 can move along the X axis, Y axis and Z axis through the driving device and the transmission mechanism, and move along the Z axis. Rotation, the movement of the upper head 5 and the lower head 6 on the X-axis and Y-axis is driven by a linear motor, and the screw guide rail or rack-and-pinion guide rail is driven. The upper head 5 and the lower head 6 can move on the Z-axis. Servo electric cylinder, hydraulic pressure, lead screw, size rack and other transmission methods are adopted. The upper head 5 and the lower head 6 can be rotated on the Z axis by electric spindle or m...

Embodiment 3

[0058] Embodiment 3: This embodiment is basically the same as Embodiment 1, the difference is:

[0059] (1) The end of the friction stirring head 16 of the present embodiment is provided with an anti-wear gasket 17, and the preparation method of the anti-wear gasket 17 is: 80% tungsten carbide powder, 6% alumina fiber, 7% titanium dioxide powder, 3% Vanadium oxide powder and 4% graphite powder are mixed and smelted into a liquid alloy at 3000°C. The femtosecond laser is used to irradiate disorderly. The repetition frequency of the femtosecond laser is 95MHz, and the frequency of the chopper is adjusted to 4000Hz. The number of femtosecond pulses in the cycle is about 18776, and the irradiation time is 6 minutes. Then the liquid alloy is gradually cooled to a solid state, and then remelted. The above operation is repeated for a total of 6 times, followed by casting and forging to obtain an anti-wear bar after internal remodeling. ; Weld the anti-wear bar and the end of the fric...

technical field

[0001] The invention belongs to the technical field of friction stir welding welding equipment, in particular to a double-head double-sided high-efficiency friction stir welding equipment and a welding method thereof. Background technique

[0002] Since the invention of friction stir welding, friction stir welding technology has received extensive attention and in-depth research, especially for aluminum alloy materials. Research institutions, schools and large companies around the world have carried out in-depth and detailed research and engineering application development. Especially in recent years, friction stir welding has been successfully applied in rail transit and shipping industry.

[0003] In the process of friction stir welding of aluminum alloy plates or profiles, the welding scheme adopts one side welding and then turns over the parts to complete the other side welding. This welding method will make it difficult to control the welding deformatio...

Examples

Embodiment 1

[0040] Embodiment 1: as figure 1 , 3 , 4, the friction stir welding equipment of this embodiment comprises: a base 1, a pair of columns 2 arranged on the base 1, an upper beam 3 connected to the top of the column 2, an upper head 5 is arranged on the upper beam 3, The lower crossbeam 4 connected between the lower ends of the columns 2 is provided with a lower head 6 corresponding up and down with the upper head 5 on the lower crossbeam 4 .

[0041] Among them, the column 2, the upper beam 3 and the lower beam 4 form a gantry frame with an integral structure, and the upper machine head 5 and the lower machine head 6 can move along the X axis, Y axis and Z axis through the driving device and the transmission mechanism, and move along the Z axis. Rotation, the movement of the upper head 5 and the lower head 6 on the X-axis and Y-axis is driven by a linear motor, and the screw guide rail or rack-and-pinion guide rail is driven. The upper head 5 and the lower head 6 can move on th...

Embodiment 2

[0049] Embodiment 2: as figure 2 , 3 As shown in . The lower crossbeam 4 connected between the lower ends of the columns 2 is provided with a lower head 6 corresponding up and down with the upper head 5 on the lower crossbeam 4 .

[0050] Among them, the column 2, the upper beam 3 and the lower beam 4 form a gantry frame with an integral structure, and the upper machine head 5 and the lower machine head 6 can move along the X axis, Y axis and Z axis through the driving device and the transmission mechanism, and move along the Z axis. Rotation, the movement of the upper head 5 and the lower head 6 on the X-axis and Y-axis is driven by a linear motor, and the screw guide rail or rack-and-pinion guide rail is driven. The upper head 5 and the lower head 6 can move on the Z-axis. Servo electric cylinder, hydraulic pressure, lead screw, size rack and other transmission methods are adopted. The upper head 5 and the lower head 6 can be rotated on the Z axis by electric spindle or m...

Embodiment 3

[0058] Embodiment 3: This embodiment is basically the same as Embodiment 1, the difference is:

[0059] (1) The end of the friction stirring head 16 of the present embodiment is provided with an anti-wear gasket 17, and the preparation method of the anti-wear gasket 17 is: 80% tungsten carbide powder, 6% alumina fiber, 7% titanium dioxide powder, 3% Vanadium oxide powder and 4% graphite powder are mixed and smelted into a liquid alloy at 3000°C. The femtosecond laser is used to irradiate disorderly. The repetition frequency of the femtosecond laser is 95MHz, and the frequency of the chopper is adjusted to 4000Hz. The number of femtosecond pulses in the cycle is about 18776, and the irradiation time is 6 minutes. Then the liquid alloy is gradually cooled to a solid state, and then remelted. The above operation is repeated for a total of 6 times, followed by casting and forging to obtain an anti-wear bar after internal remodeling. ; Weld the anti-wear bar and the end of the fric...

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