Friction stir welding main shaft inclination angle adjusting structure and adjusting method thereof

Abstract

The invention provides a friction stir welding spindle inclination angle adjusting structure and an adjusting method thereof, and relates to the technical field of friction stir welding, the friction stir welding spindle inclination angle adjusting structure comprises a mounting frame and a mounting plate, a spindle motor is fixedly mounted at the top end of the mounting plate, a shaft sleeve is fixedly connected to the bottom end of the mounting plate, and a base is fixedly connected to the bottom end of the mounting frame; an adjusting assembly used for adjusting the angle of the main shaft is fixedly installed at the bottom end of the base, a limiting sleeve is fixedly connected to the bottom end of the base, a first rotating connecting block is fixedly connected to the output end of the main shaft motor, a two-way coupler is fixedly connected to the bottom end of the first rotating connecting block, and a second rotating connecting block is fixedly connected to the bottom end of the two-way coupler. A main shaft body is fixedly connected to the bottom end of the second rotating connecting block, a stabilizing block is fixedly connected to one side of the outer surface of the main shaft body, the angle of the main shaft body is adjusted through an adjusting assembly, automatic locking is achieved through a locking assembly after angle adjustment is completed, and stable rotation during inclination is guaranteed through an inclination angle sleeve and a limiting sleeve.

Description

Technical Field

[0001] The invention relates to the technical field of friction stir welding, and in particular to a friction stir welding spindle inclination adjustment structure and an adjustment method thereof. Background Art

[0002] Friction stir welding is a welding technology that is different from traditional welding. It is smoke-free, arc-free, and does not require shielding gas and welding wire during the welding process. The spindle of friction stir welding is the core component of the entire equipment. It is made of high-strength alloy steel or titanium alloy. It mainly bears various forces and torques during the working process. Its performance directly affects the stability of the welding process and the quality of the weld. It mainly drives the stirring needle to stir the material in the weld area by rotating the axis, causing it to produce plastic rheology and mixing, thereby realizing solid phase welding.

[0003] Deficiencies in the prior art: In the actual use of the spindle inclination adjustment in the prior art, due to the influence of factors such as mechanical wear and temperature changes, the adjustment angle is not accurate enough. Under high-speed rotation, the spindle rotation is not stable enough. In the welding process, the adjustment mechanism in the prior art is not reasonably designed and the adjusted spindle inclination angle cannot be locked, resulting in slight changes in the spindle inclination angle during the welding process, affecting the welding quality. Summary of the invention

[0004] The problem to be solved by the present invention is that the accuracy of the spindle inclination adjustment in the prior art is not high, the spindle is not stable enough when rotating at high speed, and the angle cannot be locked after the adjustment is completed, resulting in slight changes in the spindle inclination during the welding process.

[0005] In order to solve the above technical problems, the present invention provides a stir friction welding spindle inclination adjustment structure, comprising a mounting frame and a mounting plate fixedly installed in the middle of its inner cavity, the top of the mounting plate is fixedly installed with a spindle motor, the bottom end of the mounting plate is fixedly connected with a shaft sleeve, the bottom end of the mounting frame is fixedly connected with a base, one side of the bottom end of the base is fixedly installed with an adjustment component for adjusting the spindle angle, the bottom end of the base is fixedly connected with a limiting sleeve, the output end of the spindle motor is fixedly connected with a first rotating connection block, the bottom end of the first rotating connection block is fixedly connected with a two-way coupling, the bottom end of the two-way coupling is fixedly connected with a second rotating connection block, the bottom end of the second rotating connection block is fixedly connected with a spindle body, and one side of the outer surface of the spindle body is fixedly connected with a stabilizing block;

[0006] The adjustment assembly comprises a locking assembly fixedly connected to the right end of the base, connecting rods are rotatably connected to both sides of the inner cavity of the base, and an inclination sleeve is fixedly connected between the two connecting rods.

[0007] Preferably, the locking assembly includes a fixed plate fixedly connected to the right end of the base, a first support frame is fixedly installed on one side of the top end of the fixed plate, an adjusting gear is rotatably connected to the middle part of the inner cavity of the first support frame, a second support frame is fixedly installed on the other side of the top end of the fixed plate, a third rotatable connecting block is fixedly connected to the top end of the second support frame, and a locking block is rotatably connected to the outer surface of the third rotatable connecting block.

[0008] Preferably, an adjustment motor is fixedly mounted on one side of the bottom end of the base, and a driving gear is fixedly connected to the output end of the adjustment motor, and the driving gear is meshed with the surface of the adjustment gear.

[0009] Preferably, one end of the connecting rod passes through the base and is fixedly connected to the central axis of the adjusting gear, and one end of the locking block away from the third rotating connecting block is movably connected to the surface of the adjusting gear.

[0010] Preferably, the shaft sleeve, the inclination sleeve and the limiting sleeve are in corresponding positions and are interconnected, and the main shaft body passes through and is rotatably connected to the inner cavities of the inclination sleeve and the limiting sleeve.

[0011] Preferably, the second rotating connection block is fixedly connected to the inner cavity of the inclination sleeve, and the top end of the main shaft body passes through the inclination sleeve and is fixedly connected to the bottom end of the second rotating connection block.

[0012] Preferably, a spindle connecting block is fixedly connected to the top end of the spindle motor, and a stirring head is fixedly connected to the bottom end of the spindle body.

[0013] Preferably, when the main shaft body is tilted, the stabilizing block contacts the inner wall of the limiting sleeve.

[0014] The present invention also provides a method for adjusting the friction stir welding spindle inclination adjustment structure, comprising the following steps:

[0015] Step 1: First, install the whole structure on the friction stir welding equipment through the mounting frame. When welding, start the spindle motor, which makes the two-way coupling rotate, drives the spindle body, and makes the stirring head rotate at high speed to weld the welding material;

[0016] Step 2: When the inclination angle of the main shaft needs to be adjusted, the adjustment motor is started, and the adjustment motor causes the driving gear to rotate, driving the adjustment gear to rotate. The angle of the inclination sleeve is adjusted by rotating the adjustment gear. When the inclination sleeve rotates, the second rotating connection block in its inner cavity adjusts the angle through one end of the two-way coupling, and at the same time drives the main shaft body to complete the angle adjustment;

[0017] Step 3: When the adjusting gear rotates clockwise, the locking block also rotates on the surface of the adjusting gear through the third rotating connecting block. After the angle adjustment is completed, the locking block automatically inserts into the corresponding tooth groove on the surface of the adjusting gear to lock its position;

[0018] Step 4: When the main shaft body is adjusted to be tilted, the stabilizing block is tilted to contact the inner wall of the limiting sleeve, so that when the main shaft body rotates at a high speed, the stability is ensured by the stabilizing block and the limiting sleeve.

[0019] Technical effects and advantages of the present invention:

[0020] 1. The present invention ensures the stability of the two-way coupling during rotation by providing a shaft sleeve, adopts the two-way coupling as the connecting component between the spindle body and the spindle motor, and efficiently transmits the rotational motion of the spindle motor to the spindle body, so that the spindle body can rotate at high speed. At the same time, the two-way coupling can adapt to the change of the spindle inclination angle and effectively transmit power, ensuring that the stable rotation of the spindle can be maintained under complex conditions, thereby improving the welding quality and efficiency. When the spindle body is tilted, the stability during rotation is increased by the stabilizing block and the limit sleeve.

[0021] 2. The present invention adjusts the angle of the main shaft body by providing an adjustment component, and the driving gear is rotated by adjusting the motor, and the driving gear drives the adjusting gear to rotate, and the angle of the inclination sleeve is adjusted by adjusting the gear. The angle is adjusted by adjusting the gear, and the stability during rotation is ensured by the surface meshing method, so as to achieve precise control of the adjustment angle. At the same time, the gear is subjected to less impact during operation, which helps to reduce the wear of the structure, thereby extending the service life of the adjustment structure.

[0022] 3. The present invention locks the adjusted angle by providing a locking assembly. When the adjusting gear rotates, the locking block also rotates with the adjusting gear through the third rotating connecting block. When the adjusting gear stops rotating, the locking block is automatically inserted into the corresponding tooth groove to lock the position of the adjusting gear, ensuring that the spindle body is in the process of rotating, avoiding the problem of slight changes in the spindle inclination angle during welding, which affects the welding quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0024] Figure 2 It is a schematic diagram of the overall cross-sectional structure of the present invention.

[0025] Figure 3 It is a schematic diagram of the structure of the adjustment component of the present invention.

[0026] Figure 4 For the present invention Figure 3 A schematic diagram of the enlarged structure in the middle.

[0027] Figure 5 For the present invention Figure 2 Enlarged schematic diagram of the structure at point B in the middle.

[0028] Figure 6 Another perspective structural diagram of the entire cross section of the present invention Figure 1 .

[0029] Figure 7 Another perspective structural diagram of the entire cross section of the present invention Figure 2 .

[0030] The accompanying drawings are marked as follows: 1. mounting frame; 2. spindle connecting block; 3. mounting plate; 4. spindle motor; 5. bushing; 6. base; 7. adjustment assembly; 71. adjustment motor; 72. driving gear; 73. locking assembly; 731. fixing plate; 732. first support frame; 733. adjusting gear; 734. second support frame; 735. third rotating connecting block; 736. locking block; 74. connecting rod; 75. inclination sleeve; 8. limiting sleeve; 9. first rotating connecting block; 10. two-way coupling; 11. second rotating connecting block; 12. spindle body; 13. stirring head; 14. stabilizing block. DETAILED DESCRIPTION

[0031] The present invention provides a friction stir welding spindle inclination adjustment structure and an adjustment method thereof, such as Figure 1 - Figure 7 As shown, it includes a mounting frame 1 and a mounting plate 3 fixedly installed in the middle of its inner cavity, a spindle motor 4 is fixedly installed on the top of the mounting plate 3, a shaft sleeve 5 is fixedly connected to the bottom end of the mounting plate 3, a base 6 is fixedly connected to the bottom end of the mounting frame 1, an adjustment component 7 for adjusting the spindle angle is fixedly installed on one side of the bottom end of the base 6, a limiting sleeve 8 is fixedly connected to the bottom end of the base 6, a first rotating connecting block 9 is fixedly connected to the output end of the spindle motor 4, a bidirectional coupling 10 is fixedly connected to the bottom end of the first rotating connecting block 9, a second rotating connecting block 11 is fixedly connected to the bottom end of the bidirectional coupling 10, a spindle body 12 is fixedly connected to the bottom end of the second rotating connecting block 11, and a stabilizing block 14 is fixedly connected to one side of the outer surface of the spindle body 12.

[0032] Further, such as Figure 3 As shown, the adjustment assembly 7 includes a locking assembly 73 fixedly connected to the right end of the base 6, and connecting rods 74 are rotatably connected to both sides of the inner cavity of the base 6. An inclination sleeve 75 is fixedly connected between the two connecting rods 74. The inclination sleeve 75 ensures that after the angle is adjusted, the main shaft body 12 can also rotate stably when tilted.

[0033] Further, such as Figure 4As shown, the locking assembly 73 includes a fixing plate 731 fixedly connected to the right end of the base 6, a first supporting frame 732 is fixedly installed on one side of the top end of the fixing plate 731, an adjusting gear 733 is rotatably connected to the middle part of the inner cavity of the first supporting frame 732, and the inclination angle is adjusted by adjusting the gear 733, a second supporting frame 734 is fixedly installed on the other side of the top end of the fixing plate 731, a third rotating connecting block 735 is fixedly connected to the top end of the second supporting frame 734, and a locking block 736 is rotatably connected to the outer surface of the third rotating connecting block 735.

[0034] Further, such as Figure 4 As shown, an adjustment motor 71 is fixedly installed on one side of the bottom end of the base 6, and a driving gear 72 is fixedly connected to the output end of the adjustment motor 71. The driving gear 72 is surface-engaged with the adjusting gear 733. The driving gear 72 is rotated by the adjustment motor 71, and no manual debugging is required, which increases the accuracy and work efficiency of angle adjustment. The driving gear 72 rotates the adjusting gear 733, and the adjusting gear 733 is used to adjust the angle. The surface engagement method ensures the stability during rotation, and the precise control of the adjustment angle is achieved. At the same time, the gear is subjected to less impact during operation, which helps to reduce the wear of the structure, thereby extending the service life of the adjustment structure.

[0035] Further, such as Figure 4 and Figure 5 As shown, one end of the connecting rod 74 passes through the base 6 and is fixedly connected to the central axis of the adjusting gear 733. The end of the locking block 736 away from the third rotating connecting block 735 is movably connected to the surface of the adjusting gear 733. During the process of adjusting the angle of rotation of the adjusting gear 733, the locking block 736 also rotates with the rotation of the adjusting gear 733 through the third rotating connecting block 735. When the adjusting gear 733 stops rotating, the locking block 736 is automatically inserted into the corresponding tooth groove to lock the position of the adjusting gear 733, thereby ensuring that the spindle body 12 is in the process of rotating, avoiding the problem of slight changes in the spindle inclination angle during welding, which affects the welding quality.

[0036] Further, such as Figure 6 As shown, the positions of the shaft sleeve 5, the inclination sleeve 75 and the limit sleeve 8 correspond and are connected to each other, and the main shaft body 12 passes through and is rotatably connected to the inner cavity of the inclination sleeve 75 and the limit sleeve 8. The stability of the main shaft body 12 during rotation is ensured by the inclination sleeve 75 and the limit sleeve 8, and the smooth adjustment of the inclination angle is ensured.

[0037] Further, such as Figure 6As shown, the second rotating connecting block 11 is fixedly connected to the inner cavity of the inclination sleeve 75, the top end of the main shaft body 12 passes through the inclination sleeve 75 and is fixedly connected to the bottom end of the second rotating connecting block 11. When the main shaft body 12 adjusts its angle, the second rotating connecting block 11 rotates, and the two-way coupling 10 ensures a stable connection state when the inclination angle of the main shaft body 12 changes.

[0038] Further, such as Figure 2 As shown, the top end of the spindle motor 4 is fixedly connected to the spindle connecting block 2, and the bottom end of the spindle body 12 is fixedly connected to the stirring head 13. The driving force of the spindle motor 4 causes the stirring head 13 to rotate at a high speed to weld the welding material.

[0039] Further, such as Figure 7 As shown, when the main shaft body 12 is tilted, the stabilizing block 14 contacts the inner wall of the limiting sleeve 8, and the stabilizing block 14 enables the main shaft body 12 to maintain stable rotation in the inner cavity of the limiting sleeve 8, thereby improving welding quality and efficiency.

[0040] The present invention also provides a method for adjusting the friction stir welding spindle inclination adjustment structure, such as Figure 1 - Figure 7 As shown, the following steps are included:

[0041] Step 1: First, the overall structure is installed on the friction stir welding equipment through the mounting frame 1. The mounting frame 1 makes the installation of the structure more convenient. When welding, the spindle motor 4 is started, and the spindle motor 4 causes the two-way coupling 10 to rotate. The two-way coupling 10, as a connecting component between the spindle body 12 and the spindle motor 4, efficiently transmits the rotational motion of the spindle motor 4 to the spindle body 12, drives the spindle body 12, and makes the stirring head 13 rotate at a high speed to weld the welding material. At the same time, the two-way coupling 10 can adapt to the change of the spindle inclination angle and effectively transmit power, ensuring that the spindle body 12 can maintain stable rotation even in complex situations, thereby improving welding quality and efficiency;

[0042] Step 2: When the inclination angle of the main shaft needs to be adjusted, the adjustment motor 71 is started. The adjustment motor 71 causes the driving gear 72 to rotate, driving the adjusting gear 733 to rotate. No manual debugging is required, which increases the accuracy and work efficiency of angle adjustment. The angle of the inclination sleeve 75 is adjusted by rotating the adjusting gear 733. The adjusting gear 733 is used to adjust the angle. The surface engagement method ensures the stability during rotation, and the precise control of the adjustment angle is achieved. At the same time, the gear is less impacted during operation, which helps to reduce the wear of the structure, thereby extending the service life of the adjustment structure. When the inclination sleeve 75 rotates, the second rotating connecting block 11 in its inner cavity adjusts the angle through one end of the two-way coupling 10, and at the same time drives the main shaft body 12 to complete the angle adjustment, and ensures that the main shaft body 12 in the inclined state can rotate stably through the inclination sleeve 75;

[0043] Step 3: When the adjusting gear 733 rotates clockwise, the locking block 736 also rotates on the surface of the adjusting gear 733 through the third rotating connecting block 735. After the angle adjustment is completed, the locking block 736 automatically inserts into the corresponding tooth groove on the surface of the adjusting gear 733 to lock its position, ensuring that the spindle body 12 is rotating, avoiding the problem that the spindle inclination angle changes slightly during the welding process, which affects the welding quality;

[0044] Step 4: When the main shaft body 12 is adjusted to be tilted, the stabilizing block 14 is tilted to contact the inner wall of the limiting sleeve 8, so that when the main shaft body 12 rotates at a high speed, the stability is ensured by the stabilizing block 14 and the limiting sleeve 8.

[0045] The working principle of the present invention is as follows: first, the overall structure is installed on the stir friction welding equipment through the mounting frame 1. The mounting frame 1 makes the installation of the structure more convenient. When welding, the spindle motor 4 is started. The spindle motor 4 rotates the two-way coupling 10, drives the spindle body 12, and makes the stirring head 13 rotate at high speed to weld the welding material. When the inclination angle of the spindle needs to be adjusted, the adjustment motor 71 is started. The adjustment motor 71 rotates the driving gear 72, drives the adjusting gear 733 to rotate, and adjusts the angle of the inclination sleeve 75 by rotating the adjusting gear 733. The adjusting gear 733 is used to adjust the angle. The surface meshing method ensures the stability during rotation and realizes the precise control of the adjustment angle. At the same time, the gear is subjected to less impact during operation, which helps to reduce the wear of the structure, thereby extending the service life of the adjustment structure. When the inclination sleeve 75 rotates, its inner cavity The second rotating connecting block 11 can adjust the angle through one end of the two-way coupling 10, and at the same time drive the main shaft body 12 to complete the angle adjustment. The two-way coupling 10 ensures a stable connection state when the inclination angle of the main shaft body 12 changes, ensuring the smooth adjustment of the inclination angle. When the adjusting gear 733 rotates clockwise, the locking block 736 also rotates on the surface of the adjusting gear 733 through the third rotating connecting block 735. After the angle adjustment is completed, the locking block 736 is automatically inserted into the corresponding tooth groove on the surface of the adjusting gear 733 to lock its position, ensuring that the main shaft body 12 is in the process of rotating, avoiding the problem of slight changes in the main shaft inclination during the welding process, which affects the welding quality. When the main shaft body 12 is adjusted to be tilted, the stabilizing block 14 is tilted to contact the inner wall of the limiting sleeve 8, so that when the main shaft body 12 rotates at high speed, the stability is ensured by the stabilizing block 14 and the limiting sleeve 8.

[0046] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A friction stir welding spindle inclination adjustment structure, comprising a mounting frame (1) and a mounting plate (3) fixedly mounted in the middle of the inner cavity thereof, characterized in that: A spindle motor (4) is fixedly mounted on the top of the mounting plate (3), a shaft sleeve (5) is fixedly connected to the bottom of the mounting plate (3), a base (6) is fixedly connected to the bottom of the mounting frame (1), an adjustment component (7) for adjusting the spindle angle is fixedly mounted on one side of the bottom of the base (6), a limiting sleeve (8) is fixedly connected to the bottom of the base (6), a first rotating connection block (9) is fixedly connected to the output end of the spindle motor (4), a bidirectional coupling (10) is fixedly connected to the bottom of the first rotating connection block (9), a second rotating connection block (11) is fixedly connected to the bottom of the bidirectional coupling (10), a spindle body (12) is fixedly connected to the bottom of the second rotating connection block (11), and a stabilizing block (14) is fixedly connected to one side of the outer surface of the spindle body (12); The adjustment assembly (7) comprises a locking assembly (73) fixedly connected to the right end of the base (6); connecting rods (74) are rotatably connected to both sides of the inner cavity of the base (6); and a tilt sleeve (75) is fixedly connected between the two connecting rods (74).

2. A friction stir welding spindle inclination adjustment structure according to claim 1, characterized in that: The locking assembly (73) includes a fixing plate (731) fixedly connected to the right end of the base (6), a first support frame (732) is fixedly installed on one side of the top end of the fixing plate (731), an adjusting gear (733) is rotatably connected to the middle part of the inner cavity of the first support frame (732), a second support frame (734) is fixedly installed on the other side of the top end of the fixing plate (731), a third rotatable connecting block (735) is fixedly connected to the top end of the second support frame (734), and a locking block (736) is rotatably connected to the outer surface of the third rotatable connecting block (735).

3. A friction stir welding spindle inclination adjustment structure according to claim 2, characterized in that: An adjustment motor (71) is fixedly mounted on one side of the bottom end of the base (6); an output end of the adjustment motor (71) is fixedly connected to a driving gear (72); and the driving gear (72) is meshed with a surface of an adjustment gear (733).

4. The friction stir welding spindle inclination adjustment structure according to claim 2, characterized in that: One end of the connecting rod (74) passes through the base (6) and is fixedly connected to the central axis of the adjusting gear (733), and one end of the locking block (736) away from the third rotating connecting block (735) is movably connected to the surface of the adjusting gear (733).

5. The friction stir welding spindle inclination adjustment structure according to claim 1, characterized in that: The shaft sleeve (5), the inclination sleeve (75) and the limiting sleeve (8) are positioned correspondingly and are interconnected, and the main shaft body (12) passes through and is rotatably connected to the inner cavities of the inclination sleeve (75) and the limiting sleeve (8).

6. The friction stir welding spindle inclination adjustment structure according to claim 1, characterized in that: The second rotating connection block (11) is fixedly connected to the inner cavity of the inclination sleeve (75), and the top end of the main shaft body (12) passes through the inclination sleeve (75) and is fixedly connected to the bottom end of the second rotating connection block (11).

7. The friction stir welding spindle inclination adjustment structure according to claim 1, characterized in that: The top end of the spindle motor (4) is fixedly connected to a spindle connection block (2), and the bottom end of the spindle body (12) is fixedly connected to a stirring head (13).

8. The friction stir welding spindle inclination adjustment structure according to claim 1, characterized in that: When the main shaft body (12) is tilted, the stabilizing block (14) contacts the inner wall of the limiting sleeve (8).

9. A method for adjusting the spindle inclination angle of friction stir welding, characterized in that: The following steps are involved: Step 1: First, the whole structure is mounted on the friction stir welding equipment through the mounting frame (1), and the spindle motor (4) is started during welding. The spindle motor (4) causes the bidirectional coupling (10) to rotate, driving the spindle body (12), causing the stirring head (13) to rotate at a high speed, and welding the welding material; Step 2: When the inclination angle of the main shaft needs to be adjusted, the adjustment motor (71) is started, and the adjustment motor (71) causes the driving gear (72) to rotate, thereby driving the adjustment gear (733) to rotate. The angle of the inclination sleeve (75) is adjusted by the rotation of the adjustment gear (733). When the inclination sleeve (75) rotates, the second rotating connecting block (11) in its inner cavity adjusts the angle through one end of the two-way coupling (10), and at the same time drives the main shaft body (12) to complete the angle adjustment. Step 3: When the adjusting gear (733) rotates clockwise, the locking block (736) also rotates on the surface of the adjusting gear (733) through the third rotating connecting block (735). After the angle adjustment is completed, the locking block (736) automatically inserts into the corresponding tooth groove on the surface of the adjusting gear (733) to lock its position; Step 4: When the main shaft body (12) is adjusted to be tilted, the stabilizing block (14) is tilted to contact the inner wall of the limiting sleeve (8), so that when the main shaft body (12) rotates at a high speed, the stability is ensured by the stabilizing block (14) and the limiting sleeve (8).

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