Flexible grinding equipment for complex curved surface welding seam

Abstract

The utility model discloses flexible grinding equipment for a complex curved surface welding seam, and relates to the technical field of grinding equipment. Comprising a rack, the outer wall of the rack is fixedly connected with a direct-current motor, the output end of the direct-current motor is fixedly connected with a transmission shaft, the outer wall of the transmission shaft is in rolling connection with a grinding belt, the outer wall of the rack is fixedly connected with a limiting device, the outer wall of the rack is rotationally connected with a tensioning shaft, and the outer wall of the rack is fixedly connected with a limiting strip; the inner wall of the limiting strip is fixedly connected with a fixed cylinder; the outer wall of the rotating device is rotationally connected with the inner wall of the fixing cylinder, and in the rotating device, a first fixing rod and a second fixing rod are rotationally connected through a positioning shaft and are in sliding fit with a grinding belt, so that when welding seams with different curvatures are ground, the grinding belt deforms to drive the fixing rods to rotate, the contact angle is adjusted, and a complex curved surface is attached; and the limiting block limits the rotating angle, safety and stability are guaranteed, the adaptability of equipment to complex curved surfaces is improved, and the grinding quality and efficiency are improved.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, specifically a flexible grinding equipment for complex curved surface welds. Background Technology

[0002] In modern manufacturing, the treatment of complex curved surface welds is crucial. From aircraft components in the aerospace field to engine blocks in automobile manufacturing, many key components have complex curved surface welds. The quality of these welds is related to product performance, safety, and service life. Currently, existing equipment for grinding complex curved surface welds has shortcomings. Traditional grinding equipment is mostly rigid in structure, lacking flexibility when facing complex curved surface welds with varying shapes and curvatures. For complex curved surface welds on mechanical blades, traditional equipment cannot adjust the grinding angle and position in real time according to the weld curvature. The contact angle between the grinding tool and the weld is fixed, making it difficult to conform to the curved surface and easily resulting in uneven grinding. At the same time, traditional equipment lacks the ability to adapt to changes in force during grinding. Uneven force on the grinding belt is common when grinding complex curved surface welds. Traditional equipment cannot automatically adjust the tension and operating status of the grinding belt according to the force, which not only affects the grinding effect but also easily causes equipment failure, ultimately reducing production efficiency and increasing maintenance costs. Summary of the Invention

[0003] (a) Technical problems to be solved

[0004] To address the shortcomings of existing technologies, this utility model provides a flexible grinding device for complex curved weld seams. By using a rotating device to flexibly adapt to different curved surfaces and by using a limiting device to stabilize the grinding process, it effectively solves the drawbacks of traditional equipment, improves the adaptability of the equipment to complex curved surfaces, ensures stable operation of the grinding process, and enhances the reliability of the grinding process.

[0005] To achieve the above objectives, this utility model provides the following technical solution: A flexible grinding device for complex curved weld seams, comprising a frame, a DC motor fixedly connected to the outer wall of the frame, a drive shaft fixedly connected to the output end of the DC motor, a grinding belt rotatably connected to the outer wall of the drive shaft, a limiting device fixedly connected to the outer wall of the frame, a tensioning shaft rotatably connected to the outer wall of the frame, a limiting strip fixedly connected to the outer wall of the frame, and a fixing cylinder fixedly connected to the inner wall of the limiting strip; a rotating device, the outer wall of which is rotatably connected to the inner wall of the fixing cylinder; the rotating device includes a first fixed rod, a first limiting block fixedly connected to the outer wall of the first fixed rod, a positioning shaft rotatably connected to the inner wall of the first fixed rod through a rotating hole, the rotating hole being formed in the wall of the first fixed rod, a second fixed rod fixedly connected to the outer wall of the top of the positioning shaft, a second limiting block fixedly connected to the outer wall of the second fixed rod, and limiting blocks slidably connected to the inner wall of the first fixed rod and the outer wall of the second fixed rod.

[0006] Preferably, the inner wall of the fixed cylinder is rotatably connected to the outer wall of the limiting block, the outer wall of the tensioning shaft is rollingly connected to the inner side wall of the grinding belt, and the outer walls of the first and second fixed rods are slidably connected to the inner side wall of the grinding belt. In the rotating device, the first and second fixed rods are rotatably connected through the positioning shaft and slidably cooperate with the grinding belt. When grinding welds with different curvatures, the deformation of the grinding belt drives the fixed rods to rotate, adjust the contact angle, fit the complex curved surface, and the limiting block restricts the rotation angle to ensure safety and stability and improve the adaptability of the equipment to complex curved surfaces.

[0007] Preferably, the limiting device includes a fixed plate, a cylinder is fixedly connected to the outer wall of the fixed plate, a connecting plate is fixedly connected to the end of the cylinder away from the fixed plate, rotating rods are symmetrically rotatably connected to both ends of the connecting plate, a positioning frame is rotatably connected to the end of the rotating rod away from the connecting plate, a positioning frame is fixedly connected to the outer wall of the rotating rod, a telescopic rod is fixedly connected to the outer wall of the connecting plate, a compression spring is sleeved on the outside of the telescopic rod, and a pushing block is fixedly connected to the end of the telescopic rod away from the connecting plate.

[0008] Preferably, one end of the compression spring is fixedly connected to the outer wall of the connecting plate, and the other end of the compression spring is fixedly connected to the outer wall of the pushing block. Both ends of the fixed plate are fixedly connected to the inner side wall of the frame. The outer wall of the positioning frame is fixedly connected to the inner side wall of the frame. The outer wall of the pushing block contacts the outer walls of the first and second fixed rods respectively. Through the limiting device, the cylinder pushes the connecting plate, which drives the rotating rod. Because the positioning frame is fixed, the pushing block contacts the fixed rod. With the cooperation of the limiting block, the connecting plate squeezes the spring and the telescopic rod, which can adjust the pressure on the fixed rod. Depending on the force of the grinding belt, a suitable tension can be maintained to ensure its stable operation.

[0009] This invention provides a flexible grinding device for complex curved surface welds. It has the following beneficial effects:

[0010] (i) In this flexible grinding equipment, the first fixed rod and the second fixed rod are rotatably connected by the positioning shaft in the rotating device and slide with the grinding belt. When grinding welds with different curvatures, the deformation of the grinding belt drives the fixed rod to rotate, adjusts the contact angle, fits the complex curved surface, and the limit block restricts the rotation angle to ensure safety and stability, improves the adaptability of the equipment to complex curved surfaces, and improves the grinding quality and efficiency.

[0011] (ii) The flexible grinding equipment, through the limiting device, the cylinder pushes the connecting plate, which drives the rotating rod. Because the positioning frame is fixed, the pushing block contacts the fixed rod. With the cooperation of the limiting block, the connecting plate squeezes the spring and the telescopic rod, which can adjust the pressure on the fixed rod. According to the force of the grinding belt, it maintains a suitable tension, ensures stable operation, and enhances the reliability of grinding. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0013] Figure 2 This is a schematic diagram of the overall internal structure of this utility model;

[0014] Figure 3 This is a partial structural diagram of the base of this utility model;

[0015] Figure 4 This is an exploded view of the rotating device of this utility model;

[0016] Figure 5 This is a schematic diagram of the structure of the limiting block of this utility model;

[0017] Figure 6 This is a schematic diagram of the limiting device of this utility model.

[0018] In the diagram: 1. Frame; 2. DC motor; 3. Drive shaft; 4. Rotating device; 5. Limiting device; 6. Grinding belt; 11. Limiting strip; 12. Fixing cylinder; 13. Tensioning shaft; 41. First fixing rod; 42. Rotating hole; 43. First limiting block; 44. Second fixing rod; 45. Positioning shaft; 46. Second limiting block; 47. Limiting block; 51. Fixing plate; 52. Cylinder; 53. Connecting plate; 54. Rotating rod; 55. Positioning frame; 56. Telescopic rod; 57. Compression spring; 58. Pushing block. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-6This utility model provides a technical solution: a flexible grinding device for complex curved surface welds, including a frame 1, a DC motor 2 fixedly connected to the outer wall of the frame 1, a transmission shaft 3 fixedly connected to the output end of the DC motor 2, a grinding belt 6 rolledly connected to the outer wall of the transmission shaft 3, a limit device 5 fixedly connected to the outer wall of the frame 1, a tensioning shaft 13 rotatably connected to the outer wall of the frame 1, a limit strip 11 fixedly connected to the outer wall of the frame 1, and a fixed cylinder 12 fixedly connected to the inner wall of the limit strip 11; a rotating device 4, the outer wall of the rotating device 4 rotatably connected to the inner wall of the fixed cylinder 12; the DC motor 2 fixed to the outer wall of the frame 1 is the power source of the device, after starting, its output end drives the transmission shaft 3 to rotate, and the grinding belt 6 rolledly connected to the outer wall of the transmission shaft 3 operates under the drive of the transmission shaft 3 and the tension of the tensioning shaft 13, performing grinding operations on the complex curved surface welds; the rotating device 4 is installed inside the fixed cylinder 12, and through structural design, it provides flexible guidance and support for the operation of the grinding belt 6;

[0021] The rotating device 4 includes a first fixed rod 41, a first limiting block 43 fixedly connected to the outer wall of the first fixed rod 41, a positioning shaft 45 rotatably connected to the inner wall of the first fixed rod 41 through a rotating hole 42, and the rotating hole 42 is opened in the wall of the first fixed rod 41. A second fixed rod 44 is fixedly connected to the outer wall of the top of the positioning shaft 45, a second limiting block 46 is fixedly connected to the outer wall of the second fixed rod 44, and limiting blocks 47 are slidably connected to the inner wall of the first fixed rod 41 and the outer wall of the second fixed rod 44.

[0022] The inner wall of the fixed cylinder 12 is rotatably connected to the outer wall of the limiting block 47, the outer wall of the tensioning shaft 13 is rotatably connected to the inner side wall of the grinding belt 6, the outer walls of the first fixed rod 41 and the second fixed rod 44 are slidably connected to the inner side wall of the grinding belt 6, the first fixed rod 41 and the second fixed rod 44 are rotatably connected through the positioning shaft 45 in the rotating hole 42, and the outer walls of both are slidably connected to the inner side wall of the grinding belt 6. When the equipment grinds complex curved surface welds of different shapes, the weld contacts the grinding belt 6 and pushes the central axis of the grinding belt 6 to deform it. At this time, the deformation force rotates the first fixed rod 41 and the second fixed rod 44, causing the limiting block 47 to rotate and slide out from the limiting block 47, thereby cooperating with the change of the contact angle of the grinding belt 6, so that the grinding belt 6 can fit the curved surface with different curvatures.

[0023] The limiting device 5 includes a fixed plate 51, a cylinder 52 is fixedly connected to the outer wall of the fixed plate 51, a connecting plate 53 is fixedly connected to the end of the cylinder 52 away from the fixed plate 51, a rotating rod 54 is symmetrically rotatably connected to both ends of the connecting plate 53, a positioning frame 55 is rotatably connected to the end of the rotating rod 54 away from the connecting plate 53, the positioning frame 55 is fixedly connected to the outer wall of the rotating rod 54, a telescopic rod 56 is fixedly connected to the outer wall of the connecting plate 53, a compression spring 57 is sleeved on the outside of the telescopic rod 56, and a push block 58 is fixedly connected to the end of the telescopic rod 56 away from the connecting plate 53.

[0024] One end of the compression spring 57 is fixedly connected to the outer wall of the connecting plate 53, and the other end of the compression spring 57 is fixedly connected to the outer wall of the push block 58. Both ends of the fixed plate 51 are fixedly connected to the inner side wall of the frame 1. The outer wall of the positioning frame 55 is fixedly connected to the inner side wall of the frame 1. The outer wall of the push block 58 is in contact with the outer walls of the first fixed rod 41 and the second fixed rod 44 respectively. When the cylinder 52 is started, the piston rod extends and pushes the connecting plate 53 to move. The rotating rods 54, which are symmetrically rotated at both ends of the connecting plate 53, move when the connecting plate 53 moves. Because the positioning frame 55 is fixed, and the end of the push block 58 is in contact with the outer walls of the first fixed rod 41 and the second fixed rod 44, the piston rod extends and pushes the connecting plate 53 to move. Contact, in conjunction with the first limiting block 43 and the second limiting block 46, ensures that the first fixed rod 41 and the second fixed rod 44 remain on the same axis under the push of the push block 58. At this time, the moving connecting plate 53 will cooperate with the hard-to-move push block 58 to compress the spring 57 and the telescopic rod 56, thereby adjusting the minimum force on the relative rotation of the first fixed rod 41 and the second fixed rod 44. During the operation of the equipment, the push block 58 can automatically adjust the pressure on the first fixed rod 41 and the second fixed rod 44 according to the force on the grinding belt 6 through the elastic deformation of the compression spring 57, ensuring that the grinding belt 6 always maintains a suitable tension and operational stability.

[0025] In use, the frame 1 serves as the main support structure for the entire equipment. The DC motor 2, fixed to the outer wall of the frame 1, is the power source for the equipment. After startup, its output drives the transmission shaft 3 to rotate. The grinding belt 6, which is rolled to the outer wall of the transmission shaft 3, operates under the drive of the transmission shaft 3 and the tension of the tension shaft 13, performing grinding operations on complex curved surface welds. The rotating device 4 is installed inside the fixed cylinder 12. Through its structural design, it provides flexible guidance and support for the operation of the grinding belt 6. The first fixed rod 41 and the second fixed rod 44 are rotatably connected through the positioning shaft 45 in the rotating hole 42, and the outer walls of both are slidably connected to the inner side wall of the grinding belt 6. When the equipment grinds complex curved surface welds of different shapes, the weld contacts the grinding belt 6 and pushes the central axis of the grinding belt 6. The deformation causes the first fixed rod 41 and the second fixed rod 44 to rotate, causing the limiting block 47 to rotate and slide off the limiting block 47. This, in conjunction with the change in the contact angle of the grinding belt 6, allows the grinding belt 6 to conform to surfaces with different curvatures. The fixed cylinder 12 on the limiting strip 11 ensures the stability of the rotation of the limiting block 47. The first limiting block 43 and the second limiting block 46 are respectively fixed on the first fixed rod 41 and the second fixed rod 44, which limit the rotation angle. This ensures the safety and stability of the rotation process. This rotatable design improves the equipment's adaptability to complex curved surfaces, enabling the grinding of complex-shaped welds and improving grinding quality and efficiency.

[0026] The limiting device 5 plays a role in adjustment and stabilization during equipment operation. The fixing plate 51 is fixed to the inner side wall of the frame 1, and the cylinder 52 is installed on the fixing plate 51. When the cylinder 52 is started, the piston rod extends and pushes the connecting plate 53 to move. The rotating rods 54 are symmetrically connected at both ends of the connecting plate 53. When the connecting plate 53 moves, because the positioning frame 55 is fixed and the end of the pushing block 58 is in contact with the first fixing rod 41 and the second fixing rod 44, the first limiting block 43 and the second limiting block 46 jointly restrict the movement, so that the first fixing rod 41 and the second fixing rod 44 remain on the same axis under the push of the pushing block 58. At this time, the moving connecting plate 53 will cooperate with the difficult-to-move pushing block 54. The moving block 58 compresses the spring 57 and the telescopic rod 56, thereby adjusting the minimum force on the relative rotation of the first fixed rod 41 and the second fixed rod 44. During the operation of the equipment, the moving block 58 can automatically adjust the pressure on the first fixed rod 41 and the second fixed rod 44 according to the force on the grinding belt 6 through the elastic deformation of the spring 57, ensuring that the grinding belt 6 always maintains a suitable tension and running stability. Even when facing complex curved surfaces that cause uneven force on the grinding belt 6, it can ensure the stable operation of the grinding belt 6, effectively avoiding excessive tension of the grinding belt 6 and affecting the grinding effect, thereby improving the reliability and stability of the equipment for grinding complex curved surface welds.

[0027] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0028] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A flexible grinding device for complex curved surface welds, comprising a frame (1), characterized in that: A DC motor (2) is fixedly connected to the outer wall of the frame (1), and a drive shaft (3) is fixedly connected to the output end of the DC motor (2). A grinding belt (6) is rolledly connected to the outer wall of the drive shaft (3). A limit device (5) is fixedly connected to the outer wall of the frame (1). A tensioning shaft (13) is rotatably connected to the outer wall of the frame (1). A limit strip (11) is fixedly connected to the outer wall of the frame (1), and a fixing cylinder (12) is fixedly connected to the inner wall of the limit strip (11). Rotating device (4), the outer wall of the rotating device (4) is rotatably connected to the inner wall of the fixed cylinder (12); The rotating device (4) includes a first fixed rod (41), a first limiting block (43) is fixedly connected to the outer wall of the first fixed rod (41), a positioning shaft (45) is rotatably connected to the inner wall of the first fixed rod (41) through a rotating hole (42), and the rotating hole (42) is opened in the wall of the first fixed rod (41). A second fixed rod (44) is fixedly connected to the outer wall of the top of the positioning shaft (45), a second limiting block (46) is fixedly connected to the outer wall of the second fixed rod (44), and a limiting block (47) is slidably connected to the inner wall of the first fixed rod (41) and the outer wall of the second fixed rod (44).

2. The flexible grinding equipment for complex curved surface welds according to claim 1, characterized in that: The inner wall of the fixed cylinder (12) is rotatably connected to the outer wall of the limiting block (47).

3. The flexible grinding equipment for complex curved surface welds according to claim 1, characterized in that: The outer wall of the tensioning shaft (13) is rolledly connected to the inner side wall of the grinding belt (6), and the outer walls of the first fixing rod (41) and the second fixing rod (44) are slidably connected to the inner side wall of the grinding belt (6).

4. The flexible grinding equipment for complex curved surface welds according to claim 1, characterized in that: The limiting device (5) includes a fixed plate (51), a cylinder (52) is fixedly connected to the outer wall of the fixed plate (51), a connecting plate (53) is fixedly connected to the end of the cylinder (52) away from the fixed plate (51), a rotating rod (54) is symmetrically rotatably connected to both ends of the connecting plate (53), a positioning frame (55) is rotatably connected to the end of the rotating rod (54) away from the connecting plate (53), a positioning frame (55) is fixedly connected to the outer wall of the rotating rod (54), a telescopic rod (56) is fixedly connected to the outer wall of the connecting plate (53), a compression spring (57) is sleeved on the outside of the telescopic rod (56), and a push block (58) is fixedly connected to the end of the telescopic rod (56) away from the connecting plate (53).

5. The flexible grinding equipment for complex curved surface welds according to claim 4, characterized in that: One end of the compression spring (57) is fixedly connected to the outer wall of the connecting plate (53), and the other end of the compression spring (57) is fixedly connected to the outer wall of the push block (58).

6. The flexible grinding equipment for complex curved surface welds according to claim 4, characterized in that: The two ends of the fixing plate (51) are fixedly connected to the side wall inside the frame (1), the outer wall of the positioning frame (55) is fixedly connected to the side wall inside the frame (1), and the outer wall of the pushing block (58) is in contact with the outer wall of the first fixing rod (41) and the outer wall of the second fixing rod (44) respectively.

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