Spindle mechanism for friction stir welding

Abstract

The invention relates to the technical field of friction stir welding, in particular to a main shaft mechanism for friction stir welding, and relates to a friction stir welding equipment body and a driving motor mounted on the friction stir welding equipment body, the main shaft mechanism comprises a main shaft sleeve, an adjusting shell, a placing groove, a main shaft, a positioning groove, a positioning block, a clamping component and a limiting component; the device has the beneficial effects that a new main shaft is placed in the containing groove, the main shaft is positioned through cooperation of the positioning block and the positioning groove, it is guaranteed that the follow-up main shaft and the main shaft sleeve synchronously rotate, the clamping force on the main shaft is adjusted through the adjusting component, and the main shaft and the positioning block are limited through the limiting component; the main shaft can be installed only by inserting the main shaft, extra operation is not needed, operation is easy and convenient, installation can be completed without professional technicians and professional tools, installation efficiency is improved, non-production time is shortened, and overall efficiency of welding operation is improved.

Description

Technical Field

[0001] The invention relates to the technical field of friction stir welding, in particular to a main shaft mechanism for friction stir welding. Background Art

[0002] Friction stir welding is a solid phase welding technology that has developed rapidly in recent years. It uses friction heat and plastic deformation heat as welding heat sources to weld workpieces. The friction stir welding process is that a cylindrical or other shaped stirring needle is inserted into the joint of the workpiece. Through the high-speed rotation of the stirring head, it rubs against the welding workpiece material, thereby raising the temperature of the material at the connection part and softening it. At the same time, the material is stirred and rubbed to complete the welding.

[0003] The existing stirring welding spindles are mostly of an integrated structure, with the stirring needle and the shaft shoulder integrally formed. During the welding process, the stirring needle is in direct contact with the workpiece and is subjected to a large amount of friction and impact, which is prone to wear. Once the stirring needle is worn to the point where it can no longer be used, it must be replaced. However, the traditional integrated spindle design requires users to perform cumbersome disassembly and installation steps when replacing the stirring needle, and sometimes even requires professional technicians and special tools to complete, making the replacement operation complicated and time-consuming. This process not only increases non-productive time, but also greatly reduces the overall efficiency of the welding operation.

[0004] Therefore, it is necessary to provide a spindle mechanism for friction stir welding to solve the above problems.

[0005] It should be noted that the above information disclosed in this background technology section is only for understanding the background technology of the present application concept, and therefore, it may contain information that does not constitute the prior art. Summary of the invention

[0006] Based on the above problems existing in the prior art, the problem to be solved by the present application is: to provide a spindle mechanism for friction stir welding, which can achieve the effect of simple operation during replacement.

[0007] The technical solution adopted by the present application to solve the technical problem is: a main shaft mechanism of a friction stir welding, involving a friction stir welding device body and a driving motor installed on the friction stir welding device body, including:

[0008] A main shaft sleeve is rotatably arranged on the main body of the friction stir welding equipment, and its top end is connected to the output end of the driving motor;

[0009] An adjusting housing is arranged in the main shaft sleeve;

[0010] A placement groove is provided on the main shaft sleeve;

[0011] A main shaft is arranged in the placement groove;

[0012] A positioning groove is provided on a side of the adjusting housing close to the main shaft;

[0013] The positioning block is arranged at the position of the corresponding positioning groove of the main shaft, the positioning block is slidably arranged in the positioning groove, and both the positioning block and the positioning groove are "T"-shaped structures;

[0014] A clamping component is arranged in the main shaft sleeve and is used for clamping the main shaft sleeve;

[0015] The limiting component is arranged in the main shaft sleeve and is used for limiting the main shaft sleeve.

[0016] Preferably, the clamping component includes a rotating groove, which is provided on both sides of the adjusting housing, and a clamping plate is rotatably arranged in each rotating groove, and two groups of clamping plates cooperate to clamp the main shaft sleeve;

[0017] The clamping component also includes an adjusting member, which is used to adjust the rotational position of the clamping plate, thereby adjusting the tightness of the clamping plate on the main shaft sleeve.

[0018] Preferably, the adjusting member includes a fixing rod, which is fixed on the positioning block, an adjusting slot is opened in the positioning slot, an adjusting rod is slidably arranged in the adjusting slot, the adjusting rod is located on the movement trajectory of the fixing rod, a fifth spring is connected between the adjusting rod and the adjusting slot, and is used to push the end of the adjusting rod to extend out of the adjusting slot, a fourth spring is connected in the positioning slot, the fourth spring is sleeved on the fixing rod, and overlaps the positioning block.

[0019] Preferably, the adjusting member also includes an adjusting cavity, which is opened in the adjusting shell, and the adjusting groove is set through the adjusting cavity. An adjusting gear is set at the position of the adjusting rod corresponding to the adjusting cavity, the adjusting rod passes through the adjusting gear and is slidably connected with the adjusting gear, the adjusting gear is rotatably connected with the adjusting cavity, and a second guide groove is opened on the adjusting rod, the second guide groove has a spiral structure, and a second guide rod is set at the position of the adjusting gear corresponding to the second guide groove, and the second guide rod is slidably set in the second guide groove.

[0020] Preferably, a transmission rod is rotatably arranged in the adjustment cavity, the transmission rod passes through the adjustment shell and penetrates the clamping plate and is connected to the clamping plate, the transmission rod is located on both sides of the adjustment gear, and an adjustment gear is sleeved at the position of the transmission rod corresponding to the adjustment cavity, the adjustment gear is a half gear, and a first transmission gear is meshed on one side of the adjustment gear, the first transmission gear is rotatably arranged in the adjustment cavity, and the first transmission gear is meshed with a group of adjustment gears, and a second transmission gear is meshed on the other side of the adjustment gear, and two groups of second transmission gears are arranged, and the second transmission gears are meshed with each other and with another group of adjustment gears.

[0021] Preferably, the limiting component includes a through slot, which is provided on the clamping plate and passes through the clamping plate, a rotating rod is rotatably arranged in the through slot, two sets of rotating rods on both sides of the adjusting housing are distributed in a circle, each rotating rod is sleeved with a limiting plate, a limiting slot is provided at the position of the main shaft corresponding to the limiting plate, and a torsion spring is provided between the limiting plate and the through slot for driving the limiting plate to rotate away from the limiting slot;

[0022] It also includes a pushing member, which is arranged in the main shaft sleeve and is used for pushing the limiting plate into the limiting groove.

[0023] Preferably, the pushing member includes a clamping and receiving groove, which is arranged at a position of the main shaft sleeve corresponding to the clamping plate, an annular groove is arranged in the main shaft sleeve, a swivel is rotatably arranged in the annular groove, a second connecting groove is arranged in the main shaft sleeve, the second connecting groove connects the clamping and receiving groove with the annular groove, a fixed block is arranged at a position of the clamping and receiving groove corresponding to the second connecting groove, the fixed block is slidably arranged in the second connecting groove, a slider is arranged at a position of the fixed block corresponding to the clamping and receiving groove, the slider is slidably arranged in the clamping and receiving groove, a top holding groove is arranged on a side of the slider close to the limiting plate, a holding block is slidably arranged in the top holding groove, a sixth spring is connected between the holding block and the top holding groove, and is used to push the holding block to extend out of the top holding groove.

[0024] Preferably, a pressing groove is provided on the main shaft sleeve, a pressing rod is slidably arranged in the pressing groove, a third spring is connected between the pressing rod and the pressing groove, and is used to push the pressing rod to extend out of the main shaft sleeve, a movable groove is provided in the main shaft sleeve, the movable groove connects the pressing groove and the annular groove, a first guide groove is provided on the rotating ring, a first guide rod is arranged at the position of the pressing rod corresponding to the first guide groove, the first guide rod passes through the movable groove and is slidably arranged in the first guide groove.

[0025] Preferably, a groove is provided in the main shaft sleeve, a first connecting groove is provided at a position of the adjusting shell corresponding to the groove, the first connecting groove penetrates the adjusting shell, a fixing groove is provided at a position of the positioning block corresponding to the first connecting groove, a limit block is slidably provided in the groove, a second spring is connected between the limit block and the groove for pulling the limit block into the groove, and the elastic force of the second spring is smaller than the elastic force of the third spring, and a limit inclined surface is provided on the limit block.

[0026] Preferably, a top groove is provided on one side of the pressing rod close to the pull groove, and the top groove is in a right-angled trapezoidal structure. A connecting plate is provided on one side of the limit block close to the top groove, and the end of the connecting plate passes through the adjustment housing and enters the top groove, and a connecting plate inclined surface is provided on the connecting plate;

[0027] A push plate is slidably arranged in the placement groove, and a first spring is connected between the push plate and the placement groove.

[0028] The beneficial effects of the present application are as follows: a spindle mechanism for friction stir welding provided by the present application, by pressing the pressing rod, the pressing rod moves toward the third spring, at this time the inclined surface position of the top groove is away from the connecting plate, then the second spring pulls the limit block into the drawing groove, so that the limit block is disengaged from the fixed groove, thereby canceling the limit on the positioning block, and the pressing rod moves in the first guide groove through the first guide rod when moving to drive the swivel to rotate, so that the swivel can drive the slider to rotate in the clamping storage groove through the fixed block, at this time the slider is away from the limit plate, canceling the top holding limit of the limit plate, and then the torsion spring drives the limit plate to rotate to disengage the limit plate from the limit groove, thereby canceling the limit on the spindle, and then the first spring supports the push plate to push the spindle out of the spindle sleeve, the disassembly of the spindle can be completed by pressing only, the operation is simple and convenient, and the disassembly can be completed without professional technicians and professional tools, thereby improving the disassembly efficiency.

[0029] By placing the new spindle into the placement groove, the positioning block and the positioning groove cooperate to position the spindle, and ensure that the subsequent spindle and spindle sleeve rotate synchronously, the clamping force on the spindle is adjusted by the adjusting component, and the limiting component limits the spindle and the positioning block. The installation of the spindle can be completed by simply inserting the spindle. No additional operation is required. The operation is simple and convenient. It can be installed without professional technicians and professional tools, which improves the installation efficiency. It not only reduces non-production time, but also improves the overall efficiency of the welding operation.

[0030] In addition to the above-described purposes, features and advantages, the present application also has other purposes, features and advantages. The present application will be further described in detail with reference to the drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0032] Figure 2 It is a three-dimensional structural schematic diagram of the main shaft sleeve and the main shaft of the present invention;

[0033] Figure 3 It is a schematic cross-sectional structural diagram of the main shaft sleeve and the main shaft of the present invention;

[0034] Figure 4 for Figure 3 A magnified schematic diagram of the structure at position A;

[0035] Figure 5 for Figure 4 A magnified schematic diagram of the structure at D;

[0036] Figure 6 for Figure 3 A magnified schematic diagram of the structure at B;

[0037] Figure 7 for Figure 3A magnified schematic diagram of the structure at C;

[0038] Figure 8 It is a partial cross-sectional structural schematic diagram of the main shaft sleeve of the present invention;

[0039] Fig. 9 for Figure 8 A magnified schematic diagram of the structure at E;

[0040] Fig.10 It is a schematic cross-sectional structural diagram of the regulating chamber of the present invention;

[0041] Fig.11 It is a schematic diagram of the three-dimensional structure of the adjusting housing and the main shaft of the present invention;

[0042] Fig.12 It is a three-dimensional structural schematic diagram of the main shaft of the present invention;

[0043] Fig.13 It is a three-dimensional structural schematic diagram of the rotating ring and the clamping plate of the present invention;

[0044] Fig.14 This is a schematic diagram of the three-dimensional structure of the adjusting shell of the present invention;

[0045] Fig.15 It is a schematic diagram of the three-dimensional structure of the adjusting gear of the present invention.

[0046] In the figure: 1, the friction stir welding equipment body; 2, the main shaft sleeve; 3, the driving motor; 4, the main shaft; 401, the limit groove; 5, the positioning block; 501, the fixed groove; 6, the positioning groove; 7, the adjustment shell; 701, the first connecting groove; 702, the rotating groove; 8, the pressing rod; 801, the top groove; 9, the placement groove; 10, the first spring; 11, the push plate; 12, the pressing groove; 13, the ring groove; 14, the rotating ring; 15, the movable groove; 16, the first guide rod; 17, the limit block; 1701, the limit inclined surface; 18, the pull groove; 19, the second spring; 20, the connecting plate; 2001, the connecting plate inclined surface; 2 1. Clamping plate; 22. Clamping storage groove; 23. Third spring; 24. Fixed rod; 25. Fourth spring; 26. Adjusting chamber; 27. Adjusting gear; 28. Adjusting groove; 29. ​​Adjusting rod; 2901. Second guide groove; 30. Fifth spring; 31. Through groove; 32. Limiting plate; 33. Transmission rod; 34. Rotating rod; 35. Second connecting groove; 36. Slider; 37. Supporting groove; 38. Sixth spring; 39. Supporting block; 41. Fixed block; 42. First transmission gear; 43. Adjusting gear; 44. Second transmission gear; 45. First guide groove; 46. Second guide rod. DETAILED DESCRIPTION

[0047] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0048] Example 1: Please refer to Figure 1-Figure 15 The present invention provides a technical solution: a spindle mechanism for friction stir welding, involving a friction stir welding device body 1 and a driving motor 3 installed on the friction stir welding device body 1, including: a spindle sleeve 2, rotatably arranged on the friction stir welding device body 1, and its top end is connected to the output end of the driving motor 3; an adjusting shell 7, arranged in the spindle sleeve 2; a placement groove 9, opened on the spindle sleeve 2; a spindle 4, arranged in the placement groove 9; a positioning groove 6, opened on a side of the adjusting shell 7 close to the spindle 4; a positioning block 5, arranged at a position corresponding to the positioning groove 6 of the spindle 4, the positioning block 5 is slidably arranged in the positioning groove 6, and the positioning block 5 and the positioning groove 6 are both "T"-shaped structures; a clamping component, arranged in the spindle sleeve 2, used to clamp the spindle sleeve 2; a limiting component, arranged in the spindle sleeve 2, used to limit the spindle sleeve 2.

[0049] Embodiment 2: Figure 6-Figure 15 As shown, a spindle mechanism for stir friction welding disclosed in Example 2 of the present invention has a structure that is basically the same as that in Example 1, except that the clamping component includes a rotating groove 702, and the rotating groove 702 is opened on both sides of the adjusting shell 7, and a clamping plate 21 is rotatably arranged in each rotating groove 702, and the two groups of clamping plates 21 cooperate to clamp the spindle sleeve 2; the clamping component also includes an adjusting member, and the adjusting member is used to adjust the rotation position of the clamping plate 21, thereby adjusting the tightness of the clamping plate 21 on the spindle sleeve 2.

[0050] The adjusting member includes a fixing rod 24, the fixing rod 24 is fixed on the positioning block 5, an adjusting groove 28 is provided in the positioning groove 6, an adjusting rod 29 is slidably provided in the adjusting groove 28, the adjusting rod 29 is located on the movement track of the fixing rod 24, a fifth spring 30 is connected between the adjusting rod 29 and the adjusting groove 28, and is used to push the end of the adjusting rod 29 out of the adjusting groove 28, a fourth spring 25 is connected in the positioning groove 6, the fourth spring 25 is sleeved on the fixing rod 24, and overlaps with the positioning block 5; the adjusting member also includes an adjusting cavity 26, the adjusting cavity 26 is provided In the adjustment shell 7, the adjustment groove 28 is set through the adjustment cavity 26, and the adjustment gear 27 is set at the position of the adjustment rod 29 corresponding to the adjustment cavity 26. The adjustment rod 29 penetrates the adjustment gear 27 and is slidably connected with the adjustment gear 27. The adjustment gear 27 is rotatably connected with the adjustment cavity 26. A second guide groove 2901 is opened on the adjustment rod 29, and the second guide groove 2901 is a spiral structure. A second guide rod 46 is set at the position of the adjustment gear 27 corresponding to the second guide groove 2901, and the second guide rod 46 is slidably set in the second guide groove 2901.

[0051] A transmission rod 33 is rotatably arranged in the adjustment cavity 26, and the transmission rod 33 passes through the adjustment housing 7 and penetrates the clamping plate 21 and is connected to the clamping plate 21. The transmission rod 33 is located on both sides of the adjustment gear 27, and an adjustment gear 43 is sleeved on the position of the transmission rod 33 corresponding to the adjustment cavity 26. The adjustment gear 43 is a half gear, and a first transmission gear 42 is meshed on one side of the adjustment gear 27. The first transmission gear 42 is rotatably arranged in the adjustment cavity 26, and the first transmission gear 42 is meshed with a group of adjustment gears 43. A second transmission gear 44 is meshed on the other side of the adjustment gear 27. Two groups of second transmission gears 44 are arranged, and the second transmission gears 44 are meshed with each other and with another group of adjustment gears 43.

[0052] The main shaft 4 drives the positioning block 5 to move, and the fixed rod 24 on the positioning block 5 contacts the adjusting rod 29 and presses the adjusting rod 29 into the adjusting groove 28. At this time, the adjusting rod 29 moves, and the adjusting gear 27 is driven to rotate through the cooperation of the second guide groove 2901 and the second guide rod 46. The adjusting gear 27 cooperates with the first transmission gear 42 and the second transmission gear 44 to drive the two sets of adjusting gears 43 to rotate in opposite directions, thereby driving the transmission rod 33 and the clamping plate 21 to rotate in opposite directions to clamp the main shaft 4.

[0053] Embodiment 3: Figure 3-Figure 5 , Figure 11-Figure 12 As shown, a spindle mechanism for stir friction welding disclosed in Example 3 of the present invention has a structure that is basically the same as that in Example 2, except that the limiting component includes a through slot 31, which is provided on the clamping plate 21 and passes through the clamping plate 21, and a rotating rod 34 is rotatably arranged in the through slot 31, and two groups of rotating rods 34 on both sides of the adjustment shell 7 are distributed in a circle, and each rotating rod 34 is sleeved with a limiting plate 32, and a limiting slot 401 is provided at the position of the limiting plate 32 of the spindle 4, and a torsion spring is provided between the limiting plate 32 and the through slot 31, which is used to drive the limiting plate 32 to rotate away from the limiting slot 401; it also includes a pushing member, which is provided in the spindle sleeve 2, and is used to push the limiting plate 32 into the limiting slot 401.

[0054] The pusher includes a clamping receiving groove 22, which is provided at a position of the main shaft sleeve 2 corresponding to the clamping plate 21, an annular groove 13 is provided in the main shaft sleeve 2, a swivel 14 is rotatably provided in the annular groove 13, a second connecting groove 35 is provided in the main shaft sleeve 2, the second connecting groove 35 connects the clamping receiving groove 22 with the annular groove 13, a fixed block 41 is provided at a position of the clamping receiving groove 22 corresponding to the second connecting groove 35, the fixed block 41 is slidably provided in the second connecting groove 35, a slider 36 is provided at a position of the fixed block 41 corresponding to the clamping receiving groove 22, the slider 36 is slidably provided in the clamping receiving groove 22, a top holding groove 37 is provided on a side of the slider 36 close to the limit plate 32, and a top holding groove 37 is provided in the top holding groove 37 A supporting block 39 is slidably arranged, and a sixth spring 38 is connected between the supporting block 39 and the supporting groove 37 for pushing the supporting block 39 out of the supporting groove 37; a pressing groove 12 is provided on the main shaft sleeve 2, and a pressing rod 8 is slidably arranged in the pressing groove 12, and a third spring 23 is connected between the pressing rod 8 and the pressing groove 12 for pushing the pressing rod 8 out of the main shaft sleeve 2, and a movable groove 15 is provided in the main shaft sleeve 2, and the movable groove 15 connects the pressing groove 12 and the annular groove 13, and a first guide groove 45 is provided on the rotating ring 14, and a first guide rod 16 is provided at the position of the pressing rod 8 corresponding to the first guide groove 45, and the first guide rod 16 passes through the movable groove 15 and is slidably arranged in the first guide groove 45.

[0055] A groove 18 is provided in the main shaft sleeve 2, and a first connecting groove 701 is provided at a position corresponding to the groove 18 of the adjusting housing 7, and the first connecting groove 701 penetrates the adjusting housing 7, and a fixing groove 501 is provided at a position corresponding to the first connecting groove 701 of the positioning block 5, and a limit block 17 is slidably provided in the groove 18, and a second spring 19 is connected between the limit block 17 and the groove 18, and is used to pull the limit block 17 into the groove 18, and the elastic force of the second spring 19 is less than that of the third spring 23. The limit block 17 is provided with a limit inclined surface 1701; a top groove 801 is provided on the side of the pressing rod 8 close to the pull groove 18, and the top groove 801 is in a right-angled trapezoidal structure; a connecting plate 20 is provided on the side of the limit block 17 close to the top groove 801, and the end of the connecting plate 20 passes through the adjustment shell 7 and enters the top groove 801, and a connecting plate inclined surface 2001 is provided on the connecting plate 20; a push plate 11 is slidably provided in the placement groove 9, and a first spring 10 is connected between the push plate 11 and the placement groove 9.

[0056] When the fixing rod 24 completely presses the adjusting rod 29 into the adjusting groove 28, the fixing groove 501 is aligned with the first connecting groove 701. Since the elastic force of the third spring 23 is greater than the elastic force of the second spring 19, the third spring 23 pushes the pressing rod 8 to reset. At this time, the pressing rod 8 pushes the connecting plate 20 to move through the top groove 801, thereby driving the limit block 17 to enter the fixing groove 501 to limit the positioning block 5. When resetting, the pressing rod 8 drives the first guide rod 16 to move in the first guide groove 45 in the opposite direction, thereby driving the rotating ring 14 to rotate in the opposite direction, and then driving the slider 36 to rotate in the opposite direction. At this time, the slider 36 moves toward the limit plate 32. The supporting block 39 on the slider 36 can push the limit plate 32 toward the main shaft 4 through the sixth spring 38, thereby making the limit plate 32 enter the limit groove 401 to limit the main shaft 4.

[0057] The specific solution is as follows: when replacement is required, by pressing the pressing rod 8, the pressing rod 8 moves toward the third spring 23. At this time, the inclined surface of the top groove 801 is away from the connecting plate 20, and the second spring 19 pulls the limit block 17 into the pull groove 18, so that the limit block 17 is separated from the fixed groove 501, thereby canceling the limit of the positioning block 5, and the pressing rod 8 moves in the first guide groove 45 through the first guide rod 16 to drive the rotating ring 14 to rotate, so that the rotating ring 14 can drive the sliding ring 14 through the fixed block 41. The block 36 rotates in the clamping storage groove 22. At this time, the slider 36 is away from the limit plate 32, and the top limit of the limit plate 32 is cancelled. Then the torsion spring drives the limit plate 32 to rotate to disengage the limit plate 32 from the limit groove 401, thereby canceling the limit on the main shaft 4. Then, the first spring 10 supports the push plate 11 to push the main shaft 4 out of the main shaft sleeve 2. The disassembly of the main shaft 4 can be completed by pressing only. The operation is simple and convenient. It can be completed without professional technicians and professional tools, thereby improving the disassembly efficiency.

[0058] By placing the new spindle 4 into the placement groove 9, the positioning block 5 and the positioning groove 6 cooperate to position the spindle 4, and ensure that the subsequent spindle 4 and the spindle sleeve 2 rotate synchronously, the positioning block 5 first contacts the limit block 17 through the limit inclined surface 1701 and presses the limit block 17 into the drawing groove 18. At this time, the limit block 17 drives the top groove 801 to move toward the third spring 23 through the connecting plate 20, so that the pressing rod 8 moves in the first guide groove 45 through the first guide rod 16 to drive the rotating ring 14 to rotate, so that the rotating ring 14 can drive the slider 36 through the fixed block 41. The slider 36 is then moved away from the spindle 4 to facilitate the insertion of the spindle 4. The spindle 4 then continues to drive the positioning block 5 to move. The fixed rod 24 on the positioning block 5 contacts the adjusting rod 29 and presses the adjusting rod 29 into the adjusting groove 28. At this time, the adjusting rod 29 moves, and the adjusting gear 27 is driven to rotate through the cooperation of the second guide groove 2901 and the second guide rod 46. The cooperation of the adjusting gear 27 with the first transmission gear 42 and the second transmission gear 44 can drive the two sets of adjusting gears 43 to rotate toward each other, thereby driving the transmission rod 33 and the clamping plate 21 to rotate toward each other. The first guide rod 16 moves in the first guide groove 45 to move in the opposite direction, and the swivel 14 rotates to clamp the main shaft 4. When the fixing rod 24 completely presses the adjusting rod 29 into the adjusting groove 28, the fixing groove 501 is aligned with the first connecting groove 701. Since the elastic force of the third spring 23 is greater than the elastic force of the second spring 19, the third spring 23 pushes the pressing rod 8 to reset. At this time, the pressing rod 8 pushes the connecting plate 20 to move through the top groove 801, thereby driving the limiting block 17 to enter the fixing groove 501 to limit the positioning block 5. When resetting, the pressing rod 8 drives the first guide rod 16 to move in the first guide groove 45 in the opposite direction, thereby driving the swivel 14 to rotate in the opposite direction. This will drive the slider 36 to rotate in the opposite direction. At this time, the slider 36 moves toward the limit plate 32. The abutment block 39 on the slider 36 can push the limit plate 32 toward the main shaft 4 through the sixth spring 38, so that the limit plate 32 enters the limit groove 401 to limit the main shaft 4, completing the installation of the main shaft 4. The installation of the main shaft 4 can be completed by simply inserting the main shaft 4. No additional operation is required. The operation is simple and convenient. The installation can be completed without professional technicians and professional tools, thereby improving the installation efficiency. It not only reduces non-production time, but also improves the overall efficiency of the welding operation.

[0059] A person skilled in the art should understand that the discussion of any of the above embodiments is only exemplary, and within the spirit of the present invention, the technical features in the above embodiments or in different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0060] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A spindle mechanism for friction stir welding, involving a friction stir welding device body (1) and a drive motor (3) mounted on the friction stir welding device body (1), characterized in that: include: A main shaft sleeve (2) is rotatably mounted on the friction stir welding device body (1), and a top end thereof is connected to an output end of the driving motor (3); An adjusting housing (7) is arranged inside the main shaft sleeve (2); A placement groove (9) is provided on the main shaft sleeve (2); A main shaft (4) is arranged in the placement groove (9); A positioning groove (6) is provided on a side of the adjusting housing (7) close to the main shaft (4); A positioning block (5) is arranged at a position of the main shaft (4) corresponding to the positioning groove (6), the positioning block (5) is slidably arranged in the positioning groove (6), and the positioning block (5) and the positioning groove (6) are both "T"-shaped structures; A clamping component, arranged in the main shaft sleeve (2) and used for clamping the main shaft sleeve (2); A limiting component is arranged in the main shaft sleeve (2) and is used to limit the position of the main shaft sleeve (2).

2. A spindle mechanism for friction stir welding according to claim 1, characterized in that: The clamping component comprises a rotating groove (702), the rotating groove (702) being arranged on both sides of the adjusting housing (7), a clamping plate (21) being rotatably arranged in each rotating groove (702), and two groups of the clamping plates (21) cooperate to clamp the main shaft sleeve (2); The clamping component also includes an adjusting member, which is used to adjust the rotational position of the clamping plate (21), thereby adjusting the tightness of the clamping plate (21) clamping the main shaft sleeve (2).

3. A spindle mechanism for friction stir welding according to claim 2, characterized in that: The adjusting member comprises a fixing rod (24), wherein the fixing rod (24) is fixed on the positioning block (5); an adjusting groove (28) is provided in the positioning groove (6); an adjusting rod (29) is slidably provided in the adjusting groove (28); the adjusting rod (29) is located on a movement track of the fixing rod (24); a fifth spring (30) is connected between the adjusting rod (29) and the adjusting groove (28) and is used for pushing an end of the adjusting rod (29) to extend out of the adjusting groove (28); a fourth spring (25) is connected in the positioning groove (6); the fourth spring (25) is sleeved on the fixing rod (24) and overlaps the positioning block (5).

4. A spindle mechanism for friction stir welding according to claim 3, characterized in that: The adjusting member further comprises an adjusting cavity (26), wherein the adjusting cavity (26) is arranged in the adjusting housing (7), the adjusting groove (28) penetrates the adjusting cavity (26), an adjusting gear (27) is arranged at a position of the adjusting rod (29) corresponding to the adjusting cavity (26), the adjusting rod (29) penetrates the adjusting gear (27) and is slidably connected thereto, the adjusting gear (27) is rotatably connected to the adjusting cavity (26), a second guide groove (2901) is arranged on the adjusting rod (29), the second guide groove (2901) is in a spiral structure, a second guide rod (46) is arranged at a position of the adjusting gear (27) corresponding to the second guide groove (2901), and the second guide rod (46) is slidably arranged in the second guide groove (2901).

5. A spindle mechanism for friction stir welding according to claim 4, characterized in that: A transmission rod (33) is rotatably arranged in the adjustment cavity (26), the transmission rod (33) passes through the adjustment housing (7) and the clamping plate (21) and is connected to the clamping plate (21), the transmission rod (33) is located on both sides of the adjustment gear (27), and an adjustment gear (43) is sleeved on the transmission rod (33) at a position corresponding to the adjustment cavity (26), the adjustment gear (43) is a half gear, one side of the adjustment gear (27) is meshed with a first transmission gear (42), the first transmission gear (42) is rotatably arranged in the adjustment cavity (26), and the first transmission gear (42) is meshed with a group of adjustment gears (43), and the other side of the adjustment gear (27) is meshed with a second transmission gear (44), two groups of the second transmission gears (44) are arranged, and the second transmission gears (44) are meshed with each other and with another group of adjustment gears (43).

6. A spindle mechanism for friction stir welding according to claim 5, characterized in that: The limiting component comprises a through slot (31), the through slot (31) being provided on the clamping plate (21) and penetrating the clamping plate (21), a rotating rod (34) being rotatably arranged in the through slot (31), two groups of rotating rods (34) on both sides of the adjusting housing (7) being distributed in a circle, each rotating rod (34) being sleeved with a limiting plate (32), a limiting slot (401) being provided on the main shaft (4) at a position corresponding to the limiting plate (32), a torsion spring being provided between the limiting plate (32) and the through slot (31) for driving the limiting plate (32) to rotate away from the limiting slot (401); It also includes a pushing member, which is arranged in the main shaft sleeve (2) and is used to push the limiting plate (32) into the limiting groove (401).

7. A spindle mechanism for friction stir welding according to claim 6, characterized in that: The pushing member comprises a clamping receiving groove (22), the clamping receiving groove (22) being arranged at a position of the main shaft sleeve (2) corresponding to the clamping plate (21), an annular groove (13) being arranged in the main shaft sleeve (2), a rotating ring (14) being rotatably arranged in the annular groove (13), a second connecting groove (35) being arranged in the main shaft sleeve (2), the second connecting groove (35) connecting the clamping receiving groove (22) with the annular groove (13), a fixing block (41) being arranged at a position of the clamping receiving groove (22) corresponding to the second connecting groove (35), the fixing block (41) is slidably arranged in the second connecting groove (35), a sliding block (36) is arranged at a position of the fixed block (41) corresponding to the clamping and receiving groove (22), the sliding block (36) is slidably arranged in the clamping and receiving groove (22), a supporting groove (37) is provided on a side of the sliding block (36) close to the limiting plate (32), a supporting block (39) is slidably arranged in the supporting groove (37), a sixth spring (38) is connected between the supporting block (39) and the supporting groove (37) for pushing the supporting block (39) out of the supporting groove (37).

8. The spindle mechanism for friction stir welding according to claim 7, characterized in that: The main shaft sleeve (2) is provided with a pressing groove (12), a pressing rod (8) is slidably arranged in the pressing groove (12), a third spring (23) is connected between the pressing rod (8) and the pressing groove (12) for pushing the pressing rod (8) to extend out of the main shaft sleeve (2), a movable groove (15) is provided in the main shaft sleeve (2), the movable groove (15) connects the pressing groove (12) and the annular groove (13), a first guide groove (45) is provided on the rotating ring (14), a first guide rod (16) is arranged at a position of the pressing rod (8) corresponding to the first guide groove (45), the first guide rod (16) passes through the movable groove (15) and is slidably arranged in the first guide groove (45).

9. A spindle mechanism for friction stir welding according to claim 8, characterized in that: A drawing groove (18) is provided in the main shaft sleeve (2), a first connecting groove (701) is provided at a position corresponding to the drawing groove (18) of the adjusting shell (7), the first connecting groove (701) runs through the adjusting shell (7), a fixing groove (501) is provided at a position corresponding to the first connecting groove (701) of the positioning block (5), a limiting block (17) is slidably provided in the drawing groove (18), a second spring (19) is connected between the limiting block (17) and the drawing groove (18) for pulling the limiting block (17) into the drawing groove (18), and the elastic force of the second spring (19) is smaller than the elastic force of the third spring (23), and a limiting inclined surface (1701) is provided on the limiting block (17).

10. A main axis mechanism for friction stir welding according to claim 9, characterized in that: A top groove (801) is provided on a side of the pressing rod (8) close to the pull groove (18), and the top groove (801) is in a right-angled trapezoidal structure; a connecting plate (20) is provided on a side of the limiting block (17) close to the top groove (801), and an end of the connecting plate (20) passes through the adjusting shell (7) and enters the top groove (801); a connecting plate inclined surface (2001) is provided on the connecting plate (20); A push plate (11) is slidably arranged in the placement groove (9), and a first spring (10) is connected between the push plate (11) and the placement groove (9).

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