Double-sided friction stir welding device for aluminum alloy plate

Abstract

The invention discloses an aluminum alloy plate double-sided friction stir welding device, and relates to the technical field of welding, the aluminum alloy plate double-sided friction stir welding device comprises a control mechanism, a welding mechanism is mounted on the control mechanism, the control mechanism comprises a clamping assembly and a control support, a lifting frame is slidably mounted on the control support, and a welding platform is slidably mounted on the lifting frame; a chassis is rotatably mounted on the welding platform, a rotating welding head is mounted on the chassis, the welding head is connected with the linkage assembly, a sliding plate is slidably mounted on the chassis, a welding support is slidably mounted on the sliding plate, the welding support is connected with the chassis through a reset spring, and a polishing assembly and a deburring assembly are mounted on the welding support; the surface of a workpiece is deburred and polished through the welding mechanism during welding, and the working efficiency is high.

Description

Technical Field

[0001] The invention relates to the technical field of welding, and in particular to a double-sided friction stir welding device for an aluminum alloy plate. Background Art

[0002] Friction stir welding, also known as FSW welding, refers to the use of a cylindrical stirring needle inserted into the joint of the workpiece and rotating at high speed. The welding head rotates at high speed and moves relative to the workpiece along the joint of the workpiece, so that the material temperature of the welding workpiece connection part rises and softens. During the welding process, the shoulder of the welding head contacts the surface of the workpiece and generates heat by friction, which can prevent the overflow of plastic material.

[0003] In the friction stir welding process of the prior art, even if the shoulder of the welding head blocks the overflow of material, there are still a small amount of burrs on the surface of the aluminum alloy plate, which affects the quality of the workpiece. Usually, the next step of deburring and grinding and polishing is required before the workpiece can be produced, which affects production efficiency. Therefore, a double-sided friction stir welding device for aluminum alloy plates is provided to address this technical problem. Summary of the invention

[0004] In view of the defects in the prior art, the present invention provides a double-sided friction stir welding device for an aluminum alloy plate to overcome the problems in the prior art.

[0005] The technical solution adopted by the present invention is: a double-sided stir friction welding device for aluminum alloy plates, including a control mechanism, a welding mechanism is installed on the control mechanism, the control mechanism includes a clamping assembly and a control bracket, a lifting frame is slidably installed on the control bracket, a welding platform is slidably installed on the lifting frame, a chassis is rotatably installed on the welding platform, a rotating welding head is installed on the chassis, the welding head is connected to a linkage assembly, a sliding plate is slidably installed on the chassis, a welding bracket is slidably installed on the sliding plate, the welding bracket is connected to the chassis through a reset spring, and a grinding assembly and a deburring assembly are installed on the welding bracket.

[0006] Furthermore, the linkage assembly includes a turntable that rotates synchronously with the welding head, a vertical pole is fixedly installed at an eccentric position of the turntable, a first end of a connecting rod is slidably installed on the vertical pole, and a second end of the connecting rod is rotatably installed on the welding bracket.

[0007] Furthermore, a spline shaft is rotatably mounted on the welding bracket, the spline shaft is spline-connected to a matching gear, the matching gear is rotatably mounted on a connecting plate, the connecting plate is fixedly connected to a welding rack, the welding rack is fixedly mounted on a chassis, and the welding rack and the matching gear are meshed with each other.

[0008] Furthermore, the sliding plate is connected to the chassis via an adjusting spring.

[0009] Furthermore, the spline shaft is coaxially fixedly connected with the bevel gear, bevel gear one and bevel gear two are meshed with each other, the gear shaft of bevel gear two is connected to the grinding assembly through belt one, the grinding assembly is a grinding roller, the grinding roller is rotatably installed on the grinding frame, and the grinding frame is fixedly connected to the welding bracket.

[0010] Furthermore, the spline shaft is connected to a deburring assembly via a second belt, and the deburring assembly is a deburring knife, which is rotatably mounted on a welding bracket.

[0011] Furthermore, a gear ring is fixedly installed on the welding platform, the gear ring and the welding gear are meshed with each other, the welding gear is connected to the output shaft of the adjustment motor, and the adjustment motor is installed on the chassis.

[0012] Furthermore, a second lead screw is rotatably mounted on the lifting frame, the second lead screw is threadedly connected to the welding platform, and the second lead screw is connected to the output shaft of the second control motor.

[0013] Furthermore, the clamping assembly includes a workbench, which corresponds to the position of the lifting frame and a clamping plate that moves toward or away from the lifting frame.

[0014] Compared with the prior art, the present invention has the following beneficial effects: (1) The present invention places the workpiece to be welded on a workbench, starts the clamping motor to drive the clamping gear to rotate, drives the two clamping racks to move relative to each other, and drives the two clamping plates to move relative to each other to clamp the workpiece; (2) The present invention adjusts the position of the welding head to correspond to the welding position, drives the lifting frame to move down to a preset position through a lead screw, so that the welding head is inserted into the connection between the two workpieces to be welded, and the two workpieces are welded together under the high-speed rotation of the welding head; (3) When the welding head of the present invention moves downward so that the welding head continues to be inserted into the connection between the workpieces, the reset spring is stretched, the deburring knife and the grinding roller are pressed against the surface of the workpiece, and the rotating welding head drives the deburring knife to rotate through the linkage assembly, and the burrs on the welded weld are deburred by the rotating deburring knife, and the deburred weld is polished by the rotating grinding roller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0016] Figure 2 It is a partial cross-sectional structural schematic diagram of the control mechanism of the present invention.

[0017] Figure 3 The local structure of the welding mechanism of the present invention is shown in FIG. Figure 1 .

[0018] Figure 4 for Figure 3 Schematic diagram of the local enlarged structure at point A in the middle.

[0019] Figure 5It is a schematic diagram of the partial cross-sectional structure of the welding mechanism of the present invention.

[0020] Figure 6 The local structure of the welding mechanism of the present invention is shown in FIG. Figure 2 .

[0021] Reference numerals: 1-control mechanism; 2-welding mechanism; 101-control bracket; 102-screw 1; 103-control motor 1; 104-lifting frame; 105-control motor 2; 106-screw 2; 107-workbench; 108-clamping plate; 109-clamping gear; 110-clamping rack; 201-welding platform; 202-gear ring; 203-welding rack; 204-welding gear; 205-connecting rod; 206-turntable; 207-vertical pole; 208-matching gear; 209-spline shaft; 210-adjusting spring; 211-welding bracket; 212-sliding plate; 213-reset spring; 214-bevel gear one; 215-bevel gear two; 216-grinding frame; 217-chassis; 218-belt one; 219-deburring bayonet; 220-belt two; 221-welding head; 222-grinding roller; 223-connecting plate. DETAILED DESCRIPTION

[0022] The present invention is further described below in conjunction with the accompanying drawings and exemplary embodiments.

[0023] Example: Reference Figure 1-Figure 6The double-sided friction stir welding device of an aluminum alloy plate shown in the figure comprises a control mechanism 1, on which a welding mechanism 2 is installed, the control mechanism 1 comprises a clamping assembly, a control bracket 101, a lead screw 102, a control motor 103, a lifting frame 104, a control motor 2 105, and a lead screw 2 106; the welding mechanism 2 comprises a welding platform 201, a gear ring 202, a welding gear 204, a spline shaft 209, an adjustment spring 210, a welding bracket 211, a sliding plate 212, a reset spring 213, a bevel gear 1 214, a bevel gear 215, a chassis 217, a belt 1 218, a belt 220, a welding head 221, a linkage assembly, a grinding assembly, and a deburring assembly; the lifting frame 104 is slidably installed on the control bracket 101, The lifting frame 104 is threadedly connected to the lead screw 102, the lead screw 102 is rotatably installed on the control bracket 101, the lead screw 102 is connected to the output shaft of the control motor 103, the control motor 103 is installed on the control bracket 101, a welding platform 201 is slidably installed on the lifting frame 104, a chassis 217 is rotatably installed on the welding platform 201, a rotating welding head 221 is installed on the chassis 217, the welding head 221 is connected to the welding motor, and the welding head 221 is connected to the linkage component, a sliding plate 212 is slidably installed on the chassis 217, a welding bracket 211 is slidably installed on the sliding plate 212, the welding bracket 211 is connected to the chassis 217 through a reset spring 213, and a grinding component and a deburring component are installed on the welding bracket 211.

[0024] The linkage assembly includes a welding rack 203, a connecting rod 205, a turntable 206, a vertical rod 207, a matching gear 208, and a connecting plate 223; the turntable 206 is connected to the welding head 221 and rotates synchronously, the vertical rod 207 is fixedly installed at the eccentric position of the turntable 206, the first end of the connecting rod 205 is slidably installed on the vertical rod 207, and the second end of the connecting rod 205 is rotatably installed on the welding bracket 211.

[0025] A spline shaft 209 is rotatably mounted on the welding bracket 211, and the spline shaft 209 is spline-connected with the mating gear 208. The mating gear 208 is rotatably mounted on the connecting plate 223, and the connecting plate 223 is fixedly connected with the welding rack 203. The welding rack 203 is fixedly mounted on the chassis 217, and the welding rack 203 and the mating gear 208 are meshed with each other.

[0026] The sliding plate 212 is connected to the chassis 217 via the adjusting spring 210 .

[0027] The spline shaft 209 is coaxially fixedly connected with the bevel gear 1 214, the bevel gear 1 214 and the bevel gear 2 215 are meshed with each other, the gear shaft of the bevel gear 215 is connected with the grinding assembly through the belt 1 218, the bevel gear 215 is rotatably mounted on the welding bracket 211, the grinding assembly is a grinding frame 216 and a grinding roller 222, the grinding roller 222 is rotatably mounted on the grinding frame 216, and the grinding frame 216 is fixedly connected to the welding bracket 211.

[0028] The spline shaft 209 is connected to a deburring assembly via a belt 220 . The deburring assembly is a deburring knife 219 , and the deburring knife 219 is rotatably mounted on a welding bracket 211 .

[0029] A gear ring 202 is fixedly mounted on the welding platform 201 . The gear ring 202 and the welding gear 204 are meshed with each other. The welding gear 204 is connected to the output shaft of the adjustment motor. The adjustment motor is mounted on the chassis 217 .

[0030] A second lead screw 106 is rotatably mounted on the lifting frame 104 . The second lead screw 106 is threadedly connected to the welding platform 201 . The second lead screw 106 is connected to the output shaft of the second control motor 105 . The second control motor 105 is mounted on the lifting frame 104 .

[0031] The clamping assembly includes a workbench 107, a clamping plate 108, a clamping gear 109, and a clamping rack 110; two clamping plates 108 that can move relative to or back to each other are slidably installed on the workbench 107, the workbench 107 corresponds to the position of the lifting frame 104, each clamping plate 108 is fixedly connected to a clamping rack 110, the two clamping racks 110 are meshed with the clamping gear 109, the clamping gear 109 is connected to the output shaft of the clamping motor, the clamping motor is installed on the control bracket 101, and the workbench 107 is installed on the control bracket 101.

[0032] The working principle of the present invention is as follows: the workpiece to be welded is placed on the workbench 107, and the clamping motor is started to drive the clamping gear 109 to rotate, which drives the two clamping racks 110 to move relative to each other, and drives the two clamping plates 108 to move relative to each other to clamp the workpiece.

[0033] The adjustment motor is started to drive the welding gear 204 to rotate, and the welding gear 204 drives the chassis 217 to rotate relative to the gear ring 202, and the position of the welding head 221 is adjusted to correspond to the welding position. The control motor 103 is started to drive the lead screw 102 to rotate and drive the lifting frame 104 to move down, so that the welding head 221 contacts the welding position, and the welding motor is started to drive the welding head 221 to rotate, and then the lead screw 102 drives the lifting frame 104 to move down to a preset position, so that the welding head 221 is inserted into the joint of the two workpieces to be welded, and the two workpieces are welded together under the high-speed rotation of the welding head 221.

[0034] When the welding head 221 rotates, the control motor 2 105 starts to drive the lead screw 2 106 to rotate, driving the welding platform 201 to move, and driving the welding head 221 to move for welding. When the welding head 221 contacts the surface of the workpiece, the grinding roller 222 and the deburring knife 219 contact the surface of the workpiece; when the lifting frame 104, the welding platform 201, the chassis 217, and the welding head 221 move downward to allow the welding head 221 to continue to be inserted into the connection of the workpiece, the reset spring 213 is stretched, the deburring knife 219 and the grinding roller 222 are pressed against the surface of the workpiece, and the gear 208 and the spline shaft 209 slide relative to each other; the rotating welding head 221 rotates synchronously with the turntable 206, driving the vertical rod 207 to rotate, driving the connecting rod 205 to swing, driving the sliding plate 212 to slide back and forth on the chassis 217, and driving the welding bracket 21 1. The spline shaft 209 and the matching gear 208 move back and forth. When the matching gear 208 moves, it contacts the welding rack 203, and the matching gear 208 rotates. The matching gear 208 drives the spline shaft 209 to rotate. The spline shaft 209 drives the bevel gear 1 214 and the bevel gear 215 to rotate. The spline shaft 209 drives the deburring knife 219 to rotate through the belt 220. The burrs on the welded weld are deburred by the rotating deburring knife 219. The bevel gear 215 drives the grinding roller 222 to rotate through the belt 1 218. The deburred weld is polished by the rotating grinding roller 222.

Claims

1. A double-sided friction stir welding device for aluminum alloy plates, comprising a control mechanism (1), a welding mechanism (2) being mounted on the control mechanism (1), characterized in that: The control mechanism (1) comprises a clamping component and a control bracket (101); a lifting frame (104) is slidably mounted on the control bracket (101); a welding platform (201) is slidably mounted on the lifting frame (104); a chassis (217) is rotatably mounted on the welding platform (201); a rotatable welding head (221) is mounted on the chassis (217); the welding head (221) is connected to a linkage component; a sliding plate (212) is slidably mounted on the chassis (217); a welding bracket (211) is slidably mounted on the sliding plate (212); the welding bracket (211) is connected to the chassis (217) via a return spring (213); and a grinding component and a deburring component are mounted on the welding bracket (211).

2. The double-sided friction stir welding device for aluminum alloy sheet according to claim 1, characterized in that: The linkage assembly comprises a turntable (206) that rotates synchronously with the welding head (221); a vertical rod (207) is fixedly mounted at an eccentric position of the turntable (206); a first end of a connecting rod (205) is slidably mounted on the vertical rod (207); and a second end of the connecting rod (205) is rotatably mounted on a welding bracket (211).

3. The double-sided friction stir welding device for aluminum alloy sheet according to claim 2, characterized in that: A spline shaft (209) is rotatably mounted on the welding bracket (211); the spline shaft (209) is spline-connected to a matching gear (208); the matching gear (208) is rotatably mounted on a connecting plate (223); the connecting plate (223) is fixedly connected to a welding rack (203); the welding rack (203) is fixedly mounted on a chassis (217); and the welding rack (203) and the matching gear (208) are meshed with each other.

4. The double-sided friction stir welding device for aluminum alloy sheet according to claim 3, characterized in that: The sliding plate (212) is connected to the chassis (217) via an adjusting spring (210).

5. The double-sided friction stir welding device for aluminum alloy sheet according to claim 4, characterized in that: The spline shaft (209) is coaxially fixedly connected to the bevel gear 1 (214); the bevel gear 1 (214) and the bevel gear 2 (215) are meshed with each other; the gear shaft of the bevel gear 2 (215) is connected to a grinding assembly via a belt 1 (218); the grinding assembly is a grinding roller (222); the grinding roller (222) is rotatably mounted on a grinding frame (216); and the grinding frame (216) is fixedly connected to a welding bracket (211).

6. The double-sided friction stir welding device for aluminum alloy sheet according to claim 5, characterized in that: The spline shaft (209) is connected to a deburring component via a second belt (220); the deburring component is a deburring knife (219); and the deburring knife (219) is rotatably mounted on a welding bracket (211).

7. The double-sided friction stir welding device for aluminum alloy sheet according to claim 6, characterized in that: A gear ring (202) is fixedly mounted on the welding platform (201); the gear ring (202) and the welding gear (204) are meshed with each other; the welding gear (204) is connected to the output shaft of the adjustment motor; and the adjustment motor is mounted on the chassis (217).

8. The double-sided friction stir welding device for aluminum alloy sheet material according to claim 7, characterized in that: A second lead screw (106) is rotatably mounted on the lifting frame (104); the second lead screw (106) is threadedly connected to the welding platform (201); and the second lead screw (106) is connected to the output shaft of the second control motor (105).

9. The double-sided friction stir welding device for aluminum alloy sheet according to claim 8, characterized in that: The clamping assembly comprises a workbench (107), the workbench (107) corresponds to the position of the lifting frame (104), and a clamping plate (108) that moves towards or away from the workbench.

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