A reel rotation tool

Abstract

The utility model discloses a kind of reel rotation tool, relate to manufacturing auxiliary tool technical field.It includes tool base, and coaxial opposite top positioning mechanism is equipped in the both sides of base, and the space for positioning reel workpiece is formed between two sides mechanism. The opposite top positioning mechanism contains tailstock part, rotating handle and telescopic shaft, telescopic shaft end portion is equipped with thimble structure, thimble structure is connected cone cap by bearing, and cone cap has conical surface and is equipped with variable-diameter adjusting structure, and can be formed by radial adjusting block Expansion conical surface. Two sides thimble structure inserts workpiece positioning hole portion and realizes positioning, and workpiece can be flexibly rotated, suitable for reel workpiece welding quality inspection etc. Scene, expand tool application range, improve positioning stability and operation convenience.

Description

Technical Field

[0001] This utility model relates to the field of manufacturing auxiliary tooling technology, specifically to a drum rotation tooling. Background Technology

[0002] In the field of mechanical manufacturing, rolled workpieces (such as cylindrical components used in transmission and conveying systems) are widely used. These workpieces often require the welding of auxiliary structures such as ring sections to the cylindrical part to meet functional requirements. However, due to uneven heat input during the welding process, the ring section is prone to deformation problems such as warping and displacement. If these problems are not detected and corrected in time, they will directly affect the subsequent assembly accuracy and the service life of the workpiece. Therefore, post-weld quality inspection is a critical link in the production process.

[0003] Traditional inspection methods lack specialized rotary positioning fixtures for roll workpieces, often relying on simple supports or general-purpose clamps. Simple supports only allow for initial workpiece placement, failing to guarantee precise workpiece axis positioning. During inspection, it's difficult to fully observe deformation by rotating the workpiece, leading to blind spots. While general-purpose clamps offer some positioning capability, they have significant drawbacks: First, the fixed dimensions of positioning components (such as ejector pins and chucks) prevent adaptation to the positioning holes of different sizes of roll workpieces—when the workpiece's positioning hole diameter exceeds the clamp's tolerance, it either fails to hold securely or causes excessive pressure, resulting in secondary damage. Second, most general-purpose clamps lack optimized rotation functionality. While some clamps can rotate the workpiece, positioning loosening during rotation can affect inspection accuracy (e.g., errors when measuring the warping of a ring with calipers) and may cause safety hazards due to workpiece misalignment. Third, the operation process is complex, requiring multiple disassemblies and replacements of components to adjust the clamp to fit the workpiece, consuming time and effort, severely reducing inspection efficiency, and failing to meet the rapid quality inspection needs of mass production.

[0004] Furthermore, while some specialized tooling designed for rolled workpieces solves the basic positioning problem, it still falls short of the limitation of "fixed-size adaptation." Multiple sets of tooling are required for rolled workpieces with different batches and positioning hole diameters, increasing production costs and inventory pressure. Simultaneously, the rotational structure design of these toolings is flawed, easily transmitting torque to the positioning components during rotation, leading to positioning failure and further limiting their application in actual production. Therefore, developing a rolled workpiece rotation tooling with precise positioning, flexible rotation, and wide-range adaptability has become an urgent need to address current production pain points.

[0005] For the reasons mentioned above, it is necessary to propose a rotating drum fixture to solve the above problems. Utility Model Content

[0006] The purpose of this invention is to overcome the defects in the existing technology and provide a rotating drum tool.

[0007] To achieve the above objectives, the technical solution of this utility model is as follows: A rotating drum fixture includes a fixture base with symmetrically arranged top positioning mechanisms on opposite sides of the fixture base. A receiving space for positioning the drum workpiece is provided between the two top positioning mechanisms. Each top positioning mechanism is provided with a pin structure. The drum workpiece has positioning holes at both ends along its axis that mate with the pin structures. The pin structures of the two top positioning mechanisms move towards each other and insert into the positioning holes to position the drum workpiece. The two top positioning mechanisms are coaxially arranged, and the position of the pin structures is adjusted along the axis by the top positioning mechanisms.

[0008] Furthermore, the top positioning mechanism includes a tailstock, a rotating handle, and a telescopic shaft. The tailstock is provided with a telescopic shaft that moves along the axial direction. The rotating handle drives the telescopic shaft to move and adjust on the tailstock. The end of the telescopic shaft is provided with a pin structure.

[0009] Furthermore, the ejector pin structure includes an ejector rod, a conical cap, and a bearing. The end of the ejector rod is connected to the conical cap via the bearing. The conical cap is rotatably disposed relative to the ejector rod, and the sidewall of the conical cap forms a conical surface.

[0010] Furthermore, the cone cap is provided with a diameter adjustment structure, which includes a plurality of radial adjustment blocks evenly distributed circumferentially on the conical surface of the cone cap. The radial adjustment blocks are synchronously and controlled to deform radially, so that the cone cap forms an enlarged conical surface on the outside of the original conical surface.

[0011] Furthermore, the variable diameter adjustment structure includes a fixed part and a rotating part. The fixed part is axially connected to the end of the top rod and forms a conical surface on one side. The rotating part is coaxially rotatably connected to the large end of the fixed part and has a ring-shaped structure. The variable diameter adjustment structure also includes a plurality of support arm adjustment parts evenly distributed circumferentially. Each support arm adjustment part is connected to a radial adjustment block. The rotating part rotates relative to the fixed part and simultaneously drives each support arm adjustment part to move, controlling the extension and contraction deformation of each radial adjustment block.

[0012] Furthermore, the support arm adjustment part includes a swing arm and a sliding arm. A radial track is provided on the fixed part along the radial direction. The radial track is located on the outside of the rotating part. The sliding arm is slidably disposed in the radial track. One end of the swing arm is hinged to the rotating part, and the other end is hinged to one end of the sliding arm. The multiple swing arms hinged on the rotating part are configured to have the same rotation direction, and the included angle between each swing arm and the rotating part is the same.

[0013] Furthermore, the fixing part is provided with an axial guide rail on one side of the conical surface, the first end of the radial adjustment block is slidably connected to the axial guide rail, and the second end of the radial adjustment block is hinged to the sliding arm; an elastic element is provided between the radial adjustment block and the fixing part, and the elastic element is configured to make the first end of the radial adjustment block always have a tendency to move closer to the rotating part.

[0014] Furthermore, the variable diameter adjustment structure also includes a rotary drive unit, which includes worm gear teeth arranged on the outer periphery of the rotary part, and a worm rotatably arranged on the fixed part, the worm meshing with the worm gear teeth.

[0015] The advantages and beneficial effects of this utility model are as follows: 1. Precise and stable positioning: The two-sided top positioning mechanisms are coaxially arranged, and the conical surface of the ejector pin structure can achieve workpiece centering and clamping. Combined with the variable diameter adjustment structure, it can adapt to positioning holes of different diameters, resulting in more precise positioning. At the same time, the worm gear driven variable diameter structure can achieve self-locking, preventing loosening during rotation and improving positioning stability.

[0016] 2. Convenient and efficient operation: The ejector pin structure achieves rotation via bearings. When the workpiece rotates on the drum, the torque is not transmitted to the telescopic shaft, allowing for easy rotation of the workpiece for comprehensive inspection. The telescopic shaft is adjusted by rotating the handle, simplifying operation and reducing manual labor intensity.

[0017] 3. Wide range of applications: The variable diameter adjustment structure forms an enlarged conical surface through radial adjustment blocks, breaking through the size limitations of traditional fixed cone caps. It can be adapted to more specifications of drum workpieces, improving the versatility and practicality of tooling. Attached Figure Description

[0018] Figure 1 This is a schematic diagram illustrating the use of a rotating drum tool according to this utility model; Figure 2 This is one of the structural schematic diagrams of a drum rotating tool according to this utility model; Figure 3 This is the second schematic diagram of the structure of a rotating drum tool according to this utility model; Figure 4 This is a schematic diagram of the ejector pin structure in Embodiment 1 of this utility model; Figure 5 This is a schematic diagram of the ejector pin structure in Embodiment 2 of this utility model; Figure 6 This is a schematic diagram showing the variation of the ejector pin structure in Embodiment 2 of this utility model; Figure 7 This is an exploded view of the ejector pin structure in Embodiment 2 of this utility model; Figure 8 This is a schematic diagram of the elastic element in this utility model; In the diagram: 1. Tooling base; 2. Top positioning mechanism; 3. Accommodation space; 4. Ejector pin structure; 5. Rolled workpiece; 6. Positioning hole; 7. Tailstock; 8. Rotating handle; 9. Telescopic shaft; 10. Ejector rod; 11. Conical cap; 12. Bearing; 13. Conical surface; 14. Variable diameter adjustment structure; 15. Radial adjusting block; 16. Fixed part; 17. Rotating part; 18. Swing arm; 19. Sliding arm; 20. Radial rail; 21. Axial guide rail; 22. Elastic element; 23. Worm gear tooth; 24. Worm; 25. Base frame; 26. Trapezoidal column; 27. Circular ring; 28. Nut part; 29. ​​Short shaft. Detailed Implementation

[0019] The specific embodiments of this utility model will be further described below with reference to examples. These examples are only used to more clearly illustrate the technical solution of this utility model and should not be construed as limiting the scope of protection of this utility model.

[0020] Example 1: A rotating drum fixture is used to inspect the welding quality of drum workpiece 5, such as... Figure 1-4 As shown, this roll winding fixture includes a fixture base 1, which includes a base frame 25. Two trapezoidal columns 26 are provided on both sides of the base frame 25. A top positioning mechanism 2 is symmetrically provided on opposite sides of the fixture base 1. Specifically, the top positioning mechanism is set on the top of the two trapezoidal columns 26. The height of the two trapezoidal columns 26 provides sufficient support height and width for the roll workpiece 5, so that a accommodating space 3 for positioning the roll workpiece 5 is formed between the two top positioning mechanisms 2. The top positioning mechanism 2 is provided with a pin structure 4. The roll workpiece 5 has positioning holes 6 at both ends along the axis that cooperate with the pin structure 4. The pin structures 4 of the two top positioning mechanisms 2 move towards each other and insert into the positioning holes 6 to position the roll workpiece 5. The two top positioning mechanisms 2 are coaxially arranged, and the position of the pin structure 4 is adjusted along the axis by the top positioning mechanism 2. The roll workpiece 5 includes a cylindrical part, and multiple ring parts 27 are welded on the cylindrical part. After welding, the ring parts 27 will deform to a certain extent under the influence of welding. The roll workpiece 5 is clamped and positioned between two ejector pin structures 4 by this fixture, and the roll workpiece 5 can be rotated easily. During its rotation, the warping deformation of the ring parts 27 can be directly observed with the naked eye by using tools such as calipers. If its deformation exceeds the standard, the roll workpiece 5 can be further corrected by heat treatment.

[0021] Furthermore, the top positioning mechanism 2 includes a tailstock 7, a rotating handle 8, and a telescopic shaft 9. The tailstock 7 contains a telescopic shaft 9 that moves along the axial direction. The rotating handle 8 drives the telescopic shaft 9 to move and adjust on the tailstock 7. The end of the telescopic shaft 9 is provided with a pin structure 4. For example... Figure 2, 3 As shown, the tailstock 7 is fixed to the top of the trapezoidal column 26 by the base bolts at its bottom, and the two tailstocks 7 are located on the same axis. The two tailstocks 7 are provided with telescopic shafts 9. The telescopic shafts 9 slide along the shaft cavity of the tailstock 7 to restrict rotation. When the rotating handle 8 is rotated, it drives the screw to rotate. The screw is screwed into the telescopic shaft 9 along the axis. The screw is restricted from axial movement and can be rotatably set in the tailstock 7. The rotation of the screw is controlled by the rotating handle 8. The rotation of the screw can drive the telescopic shaft 9 to move axially, thereby pushing out or pulling back the ejector pin structure 4.

[0022] Furthermore, the ejector structure 4 includes an ejector rod 10, a conical cap 11, and a bearing 12. The end of the ejector rod 10 is connected to the conical cap 11 via the bearing 12. The conical cap 11 is rotatably disposed relative to the ejector rod 10, and the sidewall of the conical cap 11 forms a conical surface 13. To facilitate rotation of the positioning drum workpiece 5 after clamping and positioning, in this embodiment, the ejector structure 4 is configured to be rotatable. Specifically, as shown... Figure 3 , 4 As shown, the push rod 10 is fixedly installed at the ends of the telescopic shafts 9 on opposite sides. The push rod 10 and the cone cap 11 are connected by a bearing 12. This allows the push rod 10 to be set to restrict rotation without affecting the rotation of the cone cap 11. In this embodiment, the cone cap 11 has a certain taper, with the end away from the push rod 10 being the small end and the end closer to the push rod 10 being the large end. This facilitates the insertion of the conical surface 13 of the side wall of the cone cap 11 into the positioning hole 6. The conical surface 13 facilitates the fixing of the positioning hole 6 within a certain diameter range and makes it easy to center and clamp the drum workpiece 5. It can be understood that when the drum workpiece 5 rotates, due to the bearing 12, the rotational torque will not be transmitted to the telescopic shaft 9. Therefore, the positioning of the telescopic shaft 9 driven by the rotating handle 8 and the screw has the characteristic of unidirectional force transmission. That is, after the push pin structure 4 is positioned, it forms a self-locking mechanism and will not loosen when the drum workpiece 5 rotates.

[0023] Example 2: In the aforementioned implementation, the structure of the cone cap 11 is fixed, and the slope of its conical surface 13 is fixed. If the diameter of the positioning hole 6 of the drum workpiece 5 is slightly larger than the diameter of the large end of the cone cap 11, the drum workpiece 5 cannot be fixed, resulting in a limitation on the applicability of the tooling.

[0024] As an improvement, the cone cap 11 in this embodiment is provided with a variable diameter adjustment structure 14, such as... Figure 5-8As shown, the variable diameter adjustment structure 14 includes a plurality of radial adjustment blocks 15 evenly distributed circumferentially on the conical surface 13 of the cone cap 11. In this embodiment, only three radial adjustment blocks 15 are used as an example, but the number is not limited. In actual use, the number can be increased, and three is the minimum number. Specifically, the radial adjustment blocks 15 are synchronously and controlled to deform radially, so that the cone cap 11 forms an enlarged cone surface on the outside of the original conical surface 13. It can be understood that the enlarged cone surface is not a continuous cone surface, but rather multiple radial adjustment blocks are simultaneously deformed and are all on the same virtual cone surface 13. When the radial adjustment blocks 15 are adjusted by the variable diameter adjustment structure 14, the diameter of the virtual cone surface 13 on which each radial adjustment block 15 is located increases at least on the side of the larger end. This allows the workpiece to still be positioned at the positioning hole 6 when facing the larger positioning hole 6 of the rolled workpiece 5, thereby expanding the applicability of this tooling.

[0025] Furthermore, the variable diameter adjustment structure 14 includes a fixed part 16 and a rotating part 17. It can be understood that in this embodiment, the fixed part 16 and the rotating part 17 form a cone cap 11. Similar to Embodiment 1, the push rod 10 is still connected to the cone cap 11 through the bearing 12. In this embodiment, the push rod 10 is connected to the fixed part 16 through the bearing 12. The fixed part 16 can still rotate relative to the push rod 10, while the rotation of the rotating part 17 is relative to whether or not the fixed part 16 rotates.

[0026] Specifically, the fixing part 16 is axially connected to the end of the top rod 10 and forms a conical surface 13 on one side, which is the same as in the previous embodiment. The rotating part 17 is coaxially rotatably connected to the plane on one side of the large end of the fixing part 16, and the rotating part 17 has a ring-shaped structure. The variable diameter adjustment structure 14 also includes a plurality of support arm adjustment parts evenly distributed circumferentially. Each support arm adjustment part is connected to a radial adjustment block 15. The rotating part 17 rotates relative to the fixing part 16 and simultaneously drives the movement of each support arm adjustment part, controlling the extension and contraction deformation of each radial adjustment block 15. In actual use, the rotating part 17 is the driving component that drives the synchronous adjustment of each support arm adjustment part. When the rotating part 17 rotates relative to the fixing part 16, it can control the radial adjustment block 15 to be adjusted.

[0027] Furthermore, the support arm adjustment part includes a swing arm 18 and a sliding arm 19. A radial track 20 is provided on the fixed part 16. In this embodiment, the radial track 20 is located on the side of the large end of the fixed part 16, and three radial tracks are provided, allowing the sliding part to slide within the radial track 20. The radial track 20 is located outside the rotating part 17, meaning it begins to extend radially from the outer ring of the rotating part 17, facilitating the driving of the sliding arm 19 to extend radially outward. The sliding arm 19 slides within the radial track 20. One end of the swing arm 18 is hinged to the rotating part 17, and the other end is hinged to one end of the sliding arm 19. The multiple swing arms 18 hinged to the rotating part 17 are configured with the same rotation direction, and each swing arm 18 forms the same external angle with the rotating part 17. Thus, when the rotating part 17 rotates, the three swing arms 18 can be controlled to swing simultaneously, thereby driving the sliding arm 19 to extend and retract.

[0028] Furthermore, in actual use, a receiving groove for the sliding arm 19 is provided on the conical surface 13 of the fixing part 16. When the sliding arm 19 retracts, the sliding arm 19 sinks into the receiving groove, and the outer wall of the sliding arm 19 and the outer wall of the fixing part 16 form a complete conical surface 13. When the sliding arm 19 is adjusted radially, it protrudes from the surface of the conical surface 13 of the fixing part 16, and the outer surfaces of each sliding arm 19 are simultaneously on the same virtual conical surface 13. It can be understood that the taper of this virtual conical surface 13 is greater than the taper of the original conical surface 13. Specifically, the fixing part 16 is provided with an axial guide rail 21 on one side of the conical surface 13. In this embodiment, the axial guide rail 21 is arranged on both sides of the receiving groove. The first end of the radial adjustment block 15 is slidably connected to the axial guide rail 21. Short shafts 29 for inserting into the axial guide rail 21 are provided on both sides of the first end of the radial adjustment block 15, so that the first end moves in the receiving groove through the short shafts 29 and the groove of the axial guide rail 21. The second end of the radial adjustment block 15 is hinged to the sliding arm 19. When the sliding arm 19 extends radially, it pushes the second end to lift up, thereby causing the first end to slide towards the rotating part 17, thereby forming deformation control. An elastic element 22 is provided between the radial adjustment block 15 and the fixing part 16. The elastic element 22 is configured to make the first end of the radial adjustment block 15 always have a tendency to move closer to the rotating part 17. Specifically, the elastic element 22 can be a spring, which is set inside the axial guide rail 21. One end of the spring is connected to the short shaft 29, and the other end is connected to the end of the axial guide rail 21 near the rotating part 17, so that the adjustment can be made more smoothly.

[0029] Furthermore, the variable diameter adjustment structure 14 also includes a rotary drive unit. The rotary drive unit includes a worm gear tooth 23 disposed on the outer periphery of the rotating part 17, and a worm 24 rotatably disposed on the fixed part 16. The worm 24 meshes with the worm gear tooth 23. The rotation of the rotating part 17 can be controlled by unidirectional transmission through the cooperation of the worm gear 24, thereby maintaining the adjustment position of the radial adjustment block 15. A nut part 28 for tightening is provided at one end of the worm 24, thereby facilitating tightening adjustment.

[0030] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A rotary drum tooling, characterized in that, The tooling base (1) includes a tooling base (1) on which symmetrical top positioning mechanisms (2) are provided on opposite sides. A accommodating space (3) for positioning a roll workpiece (5) is provided between the two top positioning mechanisms (2). The top positioning mechanism (2) is provided with a pin structure (4). The roll workpiece (5) is provided with positioning holes (6) that cooperate with the pin structure (4) at both ends along the axis. The pin structures (4) of the two top positioning mechanisms (2) move towards each other and insert into the positioning holes (6) to position the roll workpiece (5). The two top positioning mechanisms (2) are coaxially arranged. The top positioning mechanism (2) adjusts the position of the pin structure (4) along the axis.

2. The rotary drum tooling according to claim 1, characterized in that, The top positioning mechanism (2) includes a tailstock (7), a rotating handle (8), and a telescopic shaft (9). The tailstock (7) is provided with a telescopic shaft (9) that moves along the axial direction. The rotating handle (8) drives the telescopic shaft (9) to move and adjust on the tailstock (7). The end of the telescopic shaft (9) is provided with a pin structure (4).

3. A drum rotating tooling according to claim 1 or 2, characterized in that, The ejector pin structure (4) includes an ejector rod (10), a cone cap (11), and a bearing (12). The end of the ejector rod (10) is connected to the cone cap (11) via the bearing (12). The cone cap (11) is rotatably disposed relative to the ejector rod (10), and the side wall of the cone cap (11) forms a conical surface (13).

4. The rotary drum tooling according to claim 3, characterized in that, The cone cap (11) is provided with a diameter adjustment structure (14), which includes a plurality of radial adjustment blocks (15) evenly distributed around the conical surface (13) of the cone cap (11). The radial adjustment blocks (15) are synchronously controlled to deform radially, so that the cone cap (11) forms an enlarged cone surface on the outside of the original conical surface (13).

5. A drum rotating fixture according to claim 4, characterized in that, The variable diameter adjustment structure (14) includes a fixed part (16) and a rotating part (17). The fixed part (16) is axially connected to the end of the top rod (10) and forms a conical surface (13) on one side. The rotating part (17) is coaxially rotatably connected to the large end of the fixed part (16). The rotating part (17) has a ring-shaped structure. The variable diameter adjustment structure (14) also includes a plurality of support arm adjustment parts evenly distributed along the circumference. Each support arm adjustment part is connected to a radial adjustment block (15). The rotating part (17) rotates relative to the fixed part (16) and simultaneously drives the movement of each support arm adjustment part to control the extension and contraction deformation of each radial adjustment block (15).

6. A drum rotating fixture according to claim 5, characterized in that, The arm adjustment part includes a swing arm (18) and a sliding arm (19). A radial track (20) is provided on the fixed part (16) along the radial direction. The radial track (20) is located on the outside of the rotating part (17). The sliding arm (19) is slidably located in the radial track (20). One end of the swing arm (18) is hinged to the rotating part (17), and the other end is hinged to one end of the sliding arm (19). The multiple swing arms (18) hinged on the rotating part (17) are set to the same rotation direction, and the included angle between each swing arm (18) and the rotating part (17) is the same.

7. A drum rotating fixture according to claim 6, characterized in that, The fixed part (16) is provided with an axial guide rail (21) on one side of the conical surface (13). The first end of the radial adjustment block (15) is slidably connected to the axial guide rail (21), and the second end of the radial adjustment block (15) is hinged to the sliding arm (19). An elastic element (22) is provided between the radial adjustment block (15) and the fixed part (16). The elastic element (22) is configured to make the first end of the radial adjustment block (15) always tend to move closer to the rotating part (17).

8. A drum rotating fixture according to claim 5, characterized in that, The variable diameter adjustment structure (14) further includes a rotary drive unit, which includes a worm gear tooth (23) disposed on the outer periphery of the rotating part (17), and a worm (24) rotatably disposed on the fixed part (16), the worm (24) meshing with the worm gear tooth (23).

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