Clamping tool for axial flow fan impeller machining

Abstract

The invention relates to the technical field of clamping, in particular to a clamping tool for axial flow fan impeller machining, which comprises an anti-collision shell, a rotating seat is fixedly connected to the outer surface of the anti-collision shell, and a stable clamping device for various blades is arranged on the rotating seat. According to the blade stable clamping device, the clamping blocks are replaced to achieve attachment of the edges of various blades, the driving assembly is used for precisely driving attachment clamping, the clamping assembly is used for elastically attaching clamping, the blade grooves are formed in the outer surfaces of the clamping blocks, the replaceable clamping blocks are arranged, and therefore the blade clamping efficiency is improved. According to the blade clamping tool, the edges of blades in different shapes can be tightly attached, the tool can adapt to various blade contours, the stability and precision in the machining process are ensured, a springback base and an elastic bead are arranged in a clamping block, when the blades are subjected to clamping force, the elastic bead is compressed to generate elastic force, elastic clamping of the blades is achieved, and the machining efficiency is improved. Deformation of the blade caused by direct stress is effectively avoided, and the integrity of the blade is protected.

Description

Technical Field

[0001] The invention relates to the field of clamping technology, in particular to a clamping tool for machining an axial flow fan impeller. Background Art

[0002] Axial flow fans are widely used in various fields, such as ventilation, dust removal and cooling in factories, mines, tunnels, cooling towers, ships and buildings. In these different application scenarios, axial flow fans need to adapt to different working environments and working requirements, which puts higher requirements on the processing quality and precision of the impeller. Its shape and quality directly affect the performance of the fan, such as air volume, air pressure, efficiency, etc. For example, in industrial ventilation systems, the shape and dimensional accuracy of the impeller determine whether the fan can meet the designed flow and pressure requirements, thereby ensuring the normal operation of the ventilation system. The installation angle of the impeller blades also has a vital impact on the performance of the fan. The accurate angle can make the airflow in the impeller flow smoother, reduce energy loss, and improve the efficiency of the fan. In the prior art, the blades on the impeller are mostly clamped by squeezing block workpieces, and the elastic deformation of block workpieces such as metal blocks, rubber blocks, etc. is used to squeeze the blades to fix them in the corresponding position. If the clamping force is too large or the clamping position is improper during the clamping process, the blades are easily bent or twisted. At the same time, when faced with blades of various shapes, the block workpiece needs to be manually replaced, which affects the processing efficiency. At the same time, the block workpiece needs to be reasonably matched according to the specific situation of the blade. If the block workpiece does not match, the blade will have problems such as loose clamping or excessive squeezing, which will cause the blade to easily bend or twist. Summary of the invention

[0003] In order to overcome the deficiencies of the prior art, the present invention provides a clamping tool for machining an axial flow fan impeller.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: As a preferred technical solution of the present invention, a clamping tool for processing an axial flow fan impeller includes an anti-collision shell and a rotating seat, the rotating seat is fixedly connected to the outer surface of the anti-collision shell, and a stable clamping device for various types of blades is provided on the rotating seat. The blade stable clamping device includes a plurality of clamping blocks, and a blade groove is opened on the outer surface of the clamping block for replacing the clamping block to achieve a variety of blade edge fitting. The center of the clamping block close to the pressing column is fixedly connected to an extrusion rod, and the extrusion rod is provided with a driving assembly for precise drive fitting clamping, and the driving assembly includes a plurality of semi-toothed wheels and auxiliary wheels, and the outer surfaces of the semi-toothed wheels and the auxiliary wheels are A tooth block is movably connected to drive the half-toothed wheel to make a semicircular motion after the extrusion rod is pressed backward. The semicircular motion of the half-toothed wheel drives the tooth block to make a linear motion. A connecting block is fixedly connected to the side of the tooth block close to the clamping block. The connecting block is provided with a clamping assembly for elastic fitting and clamping. The clamping assembly includes a plurality of clamp boxes. A rebound seat is movably connected to the inside of the clamp box. A plurality of elastic beads are provided on the top of the rebound seat. An adaptable clamp is movably connected to the side of the rebound seat close to the clamp box. When the adaptable clamp fits the blade, the adaptable clamp is squeezed backward by the curvature of the blade surface to squeeze the elastic beads. After being squeezed, the elastic beads tighten the gap to lock it, thereby fitting and clamping the blade.

[0005] As a preferred technical solution of the present invention, the blade stabilizing clamping device includes a plurality of clamping blocks, the outer surface of the clamping block is provided with a blade groove, both ends of the clamping block are fixedly connected with a pressing column, the side of the pressing column away from the clamp box is fixedly connected with the sliding seat, the bottom end of the sliding seat is fixedly connected with the extrusion spring, the outer side of the extrusion spring is movably connected with a pressing bin, the bottom end of the pressing bin is fixedly connected with the pressing base, and a clamping adjustment component is provided on the pressing base; the clamping adjustment component includes a wedge-surface hexagonal frame and a wedge-surface inverted hexagonal frame, the wedge-surface hexagonal frame and the wedge The inverted hexagonal frame is fixedly connected with a pressing base, the bottom end of the pressing base is fixedly connected with a wedge-surface hexagonal frame, the center of the wedge-surface hexagonal frame is fixedly connected with a switching rod, the end of the switching rod away from the wedge-surface hexagonal frame is fixedly connected with a switching gear, the outer surface of the switching rod is movably connected with a clamping arm, the bottom of the clamping arm is movably sleeved with a rotating screw, the center of the rotating screw is fixedly sleeved with a clamping gear, the clamping gear is provided with a rotating power component for driving the clamping movement of the clamping adjustment component, and both ends of the rotating screw are fixedly connected with a fixed seat.

[0006] As a preferred technical solution of the present invention, a rotating power component includes a first gear, an outer surface of the first gear is meshedly connected to the second gear, a first rotating rod is fixedly connected at the center of the second gear, a switching component for switching different clamping blocks is provided on the first rotating rod, an end of the first rotating rod away from the first gear is fixedly connected to a rotating box, an outer surface of the first rotating rod is movably sleeved with a first supporting base, a bottom end of the first supporting base is fixedly connected to the anti-collision shell, an outer surface of the first rotating rod is movably sleeved with a threaded sleeve rod, a clamping drive component is provided on the threaded sleeve rod, an outer surface of the threaded sleeve rod is meshedly connected to a third gear, the center of the third gear is fixedly connected to the second rotating rod, both ends of the second rotating rod are movably connected to the second supporting base, the bottom end of the second supporting base is fixedly connected to the anti-collision shell, and the outer surface of the second rotating rod away from the anti-collision shell is fixedly sleeved with a fourth gear; the clamping drive component includes a third gear, and the outer surface of the third gear is sleeved with the threaded sleeve rod The gear train is meshed with a third gear, and the third gear is meshed with a fourth gear at two ends thereof. The gear train is meshed with a third gear, and the third gear is meshed with a fourth gear at two ends thereof.

[0007] As an optimal technical scheme of the present invention, the clamping assembly also includes a plurality of reset blocks, a side of the reset block close to the pressing base is movably connected in the clamp box, the top of the reset block is fixedly connected with a pressing rod seat, and the side of the pressing rod seat away from the reset block is fixedly connected to the wedge-surface hexagonal frame, both ends of the clamp box away from the adaptive clamp are fixedly connected with sliding support blocks, the outer surface of the wedge-surface hexagonal frame is provided with a rectangular slide groove, and the end of the sliding support block away from the clamp box is slidably connected to the rectangular slide groove; the driving assembly also includes a plurality of extrusion blocks, the side of the extrusion block close to the clamp box is fixedly connected to the extrusion rod, the two ends of the extrusion block are fixedly connected to the first connecting rod, the two ends of the first connecting rod are movably connected with the first connecting arm, the first connecting arm is fixedly connected to the second connecting rod on the side away from the first connecting rod, the two ends of the second connecting rod are movably connected to the second connecting arm, the second connecting arm is movably connected to the fixed movable rod on the side away from the second connecting rod, the two ends of the fixed movable rod are fixedly connected with mounting blocks, and the two ends of the fixed movable rod are respectively fixedly connected to the semi-toothed rotating wheel and the auxiliary rotating wheel. A rectangular slide groove is provided on the mounting block, and a sliding block is slidably connected to the rectangular slide groove. The side of the sliding block away from the mounting block is fixedly connected to the tooth block, the side of the tooth block close to the fixture box is fixedly connected to the connecting block, and the side of the connecting block away from the tooth block is fixedly connected to the fixture box.

[0008] Compared with the prior art, the present invention can achieve the following beneficial effects: By opening a blade groove on the outer surface of the clamping block, providing a replaceable clamping block, and forming a wedge-shaped structure between the replaceable clamping blocks, when facing different common blades, they can be simply and quickly replaced by switching components. At the same time, after replacement, the wedge-shaped structure can tightly and adaptively fit the edges of blades of different shapes, and then the blades are adaptively clamped by the clamping component, which can make the blades less likely to bend or twist during the stable clamping process. The tooling can adapt to a variety of blade contours, ensuring the stability and precision of the blades during the processing process, while improving work efficiency.

[0009] A rebound seat and elastic beads are arranged inside the clamping block. When the blade is subjected to clamping force, the elastic beads are compressed to generate elastic force, thereby achieving elastic clamping of the blade. This design effectively avoids deformation of the blade caused by direct force and protects the integrity of the blade.

[0010] Through the cooperation of the half-toothed wheel and the auxiliary wheel, precise linear motion control of the fixture box is achieved. This design not only improves the clamping accuracy, but also ensures the stability of the blade during the clamping process.

[0011] Through the coordinated work of the first gear, the second gear and other rotating power components, precise control of the rotating screw and the clamping arm is achieved, which enables the tooling to be flexibly adjusted according to the shape of the blade and processing requirements, thereby improving processing efficiency.

[0012] The design of the wedge-face hexagonal frame and the wedge-face inverted hexagonal frame, as well as the coordinated use of components such as the switching lever and the clamping arm, enable the tooling to adaptively adjust the extrusion force when extruding the blade, thereby avoiding deformation of the blade when the clamping force is too large.

[0013] Through the ingenious design of adjusting the shift block, sliding frame, sliding rack and other components, fast switching of different clamping devices is achieved. This design improves the flexibility and adaptability of the tooling, allowing workers to quickly change clamping devices according to different processing requirements.

[0014] Through the coordinated use of the reset block and the elastic bead, the tooling can automatically reset after completing one clamping and prepare for the next clamping. This design improves the working efficiency and reliability of the tooling. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the main body of the present invention; Figure 2 This is a schematic diagram of the structure of the adjusting block of the present invention; Figure 3 It is a schematic diagram of the structure of the threaded sleeve rod of the present invention; Figure 4 It is a schematic diagram of the structure of the rotating seat of the present invention; Figure 5 This is a schematic diagram of the structure of the clamping block of the present invention; Figure 6 This is a schematic diagram of the pressing chamber structure of the present invention; Figure 7 This is a schematic diagram of the structure of the first connecting rod of the present invention; Figure 8 Schematic diagram of the pressing rod seat structure of the present invention Fig. 9 This is a schematic diagram of the structure of the clamping block of the present invention; Fig.10 This is a schematic diagram of the structure of the sliding seat of the present invention; Fig.11 This is a schematic diagram of the elastic bead structure of the present invention; Fig.12 This is a schematic diagram of the connection block structure of the present invention; Fig.13 This is a schematic diagram of the rectangular chute structure of the present invention; Fig.14 This is a schematic diagram of the second connecting arm structure of the present invention.

[0016] Among them: 1. anti-collision shell; 2. rotating seat; 3. adjusting block; 4. rack; 5. sliding frame; 6. sliding frame; 7. fixed frame; 8. rotating box; 9. wedge surface hexagonal frame; 10. wedge surface inverted hexagonal frame; 11. first gear; 12. second gear; 13. first rotating rod; 14. first supporting base; 15. threaded sleeve rod; 16. third gear; 17. second rotating rod; 18. second supporting base; 19. third rotating rod; 20. threaded rod; 21. third supporting base; 22. fourth gear; 23. switching gear; 24. switching rotating rod; 25. clamping gear; 26. rotating screw; 27. clamping arm; 28. fixed seat; 2 9. Press base; 30. Press bin; 31. Extrusion spring; 32. Sliding seat; 33. Press column; 34. Clamping block; 35. Fixture box; 36. Reset block; 37. Rebound seat; 38. Elastic bead; 39. Adaptive clamp; 40. Press rod seat; 41. Sliding support block; 42. Rectangular slide groove; 43. Mounting block; 44. Extrusion rod; 45. Extrusion block; 46. First connecting rod; 47. First connecting arm; 48. Second connecting rod; 49. Second connecting arm; 50. Fixed movable rod; 51. Half-toothed wheel; 52. Auxiliary wheel; 53. Rectangular slide groove; 54. Sliding block; 55. Tooth block; 56. Connecting block; 57. Blade groove. DETAILED DESCRIPTION

[0017] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific embodiments, but the following embodiments are only preferred embodiments of the present invention, not all. Based on the embodiments in the implementation mode, other embodiments obtained by those skilled in the art without creative work all belong to the protection scope of the present invention. The experimental methods in the following embodiments, unless otherwise specified, are conventional methods, and the materials, reagents, etc. used in the following embodiments, unless otherwise specified, can all be obtained from commercial channels.

[0018] Embodiment: Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7The clamping tool for machining an axial flow fan impeller shown in the figure comprises an anti-collision shell 1 and a rotating seat 2, the rotating seat 2 is fixedly connected to the outer surface of the anti-collision shell 1, and a stable clamping device for various types of blades is provided on the rotating seat 2. The stable clamping device for the blades comprises a plurality of clamping blocks 34, and a blade groove 57 is provided on the outer surface of the clamping block 34, which is used to replace the clamping block 34 to achieve the edge fitting of various blades. The clamping block 34 is fixedly connected to the center of one side of the pressing column 33, and the extrusion rod 44 is provided with a driving component for precise driving fitting clamping. The driving component comprises a plurality of semi-toothed wheels 51 and an auxiliary wheel 52, and the outer surfaces of the semi-toothed wheels 51 and the auxiliary wheel 52 are movably connected with tooth blocks 55 for following the extrusion. After the pressure rod 44 is pressed backward, it drives the semi-toothed rotating wheel 51 to make a semi-circular motion. The semi-circular motion of the semi-toothed rotating wheel 51 drives the tooth block 55 to make a linear motion. The tooth block 55 is fixedly connected to a connecting block 56 on the side close to the clamping block 34. The connecting block 56 is provided with a clamping assembly for elastic fitting and clamping. The clamping assembly includes a plurality of clamp boxes 35. The inside of the clamp box 35 is movably connected with a rebound seat 37. The top of the rebound seat 37 is provided with a plurality of elastic beads 38. The side of the rebound seat 37 close to the clamp box 35 is movably connected with an adapting clamp 39. When the adapting clamp 39 fits the blade, the adapting clamp 39 is squeezed backward by the curvature of the blade surface to squeeze the elastic beads 38. After being squeezed, the elastic beads 38 tighten the gap to lock it, thereby fitting and clamping the blade. The equipment is installed on the machine tool. Workers can place different clamping blocks 34 on the wedge-surface hexagonal frame 9 according to blades of different shapes to clamp blades of different shapes. At the same time, the switching component can be manually operated on the assembled equipment to replace different clamping blocks 34. The worker places the edge of the blade in the blade groove 57, and the clamping adjustment component drives the wedge-surface hexagonal frame 9 and the wedge-surface inverted hexagonal frame 10 to clamp. After the blade is clamped, it squeezes the clamping block 34, and the squeezing rod 44 on the clamping block 34 squeezes the squeezing block 4 5 is extruded, the extrusion block 45 drives the first connecting arm 47 to move backward in a left semicircular motion, the first connecting arm 47 drives the second connecting arm 49 to make a semicircular motion, the second connecting arm 49 drives the half-toothed rotating wheel 51 and the auxiliary rotating wheel 52 to make a semicircular motion, the semicircular motion of the half-toothed rotating wheel 51 and the auxiliary rotating wheel 52 drives the tooth block 55 to move up and down, the up and down motion of the tooth block 55 drives the clamp box 35 to move downward, the adapting clamp 39 is moved downward by the clamp box 35 to contact the blade, and the blade is pressed and fitted to the adapting clamp 39 after being subjected to force.

[0019] like Figure 2 , Figure 3 and Figure 4The clamping adjustment assembly shown in the figure comprises a wedge-surface hexagonal frame 9 and a wedge-surface inverted hexagonal frame 10, and a pressing base 29 is fixedly connected to the wedge-surface hexagonal frame 9 and the wedge-surface inverted hexagonal frame 10, and the bottom end of the pressing base 29 is fixedly connected to the wedge-surface hexagonal frame 9, and a switching rotating rod 24 is fixedly connected to the center of the wedge-surface hexagonal frame 9, and the end of the switching rotating rod 24 away from the wedge-surface hexagonal frame 9 is fixedly connected to a switching gear 23, and the outer surface of the switching rotating rod 24 is movably connected to a clamping arm 27, and a rotating screw 26 is movably sleeved on the bottom of the clamping arm 27, and a clamping gear 25 is fixedly sleeved at the center of the rotating screw 26, and a rotating power assembly for driving the clamping movement of the clamping adjustment assembly is provided on the clamping gear 25, and both ends of the rotating screw 26 are fixedly connected to a fixing seat 28.

[0020] When the equipment is running, the clamping gear 25 rotates to drive the rotating screw 26 to rotate, and the rotating screw 26 rotates to drive the clamping arm 27 to move left and right, and the clamping arm 27 drives the switching rod 24 to move left and right. A wedge-shaped structure is formed between the wedge-surface hexagonal frame 9 and the wedge-surface inverted hexagonal frame 10. When squeezing the blades, the squeezing force can be adaptively adjusted to avoid deformation of the blades when the clamping force is too large.

[0021] like Figure 2 , Figure 3 and Figure 4 The rotating power assembly shown includes a first gear 11, the outer surface of the first gear 11 is meshedly connected with the second gear 12, the center of the second gear 12 is fixedly connected with a first rotating rod 13, the first rotating rod 13 is provided with a switching assembly for switching different clamping blocks 34, the end of the first rotating rod 13 away from the first gear 11 is fixedly connected with a rotating box 8, the outer surface of the first rotating rod 13 is movably sleeved with a first supporting base 14, the bottom end of the first supporting base 14 is fixedly connected to the anti-collision shell 1, the outer surface of the first rotating rod 13 is movably sleeved with a threaded sleeve 15, the threaded sleeve 15 is provided with a clamping drive assembly, the outer surface of the threaded sleeve 15 is meshedly connected with a third gear 16, the center of the third gear 16 is fixedly connected with a second rotating rod 17, both ends of the second rotating rod 17 are movably connected with a second supporting base 18, the bottom end of the second supporting base 18 is fixedly connected to the anti-collision shell 1, and the outer surface of the second rotating rod 17 away from the anti-collision shell 1 is fixedly sleeved with a fourth gear 22; When the equipment is running, when the clamped blade needs to be flipped, the first gear 11 is driven to rotate by the rotating motor, the first gear 11 drives the first rotating rod 13 to rotate, the second gear 12 drives the first rotating rod 13 to rotate, the first supporting base 14 is used to support the first rotating rod 13, the first rotating rod 13 rotates to drive the rotating box 8 to rotate, so as to adapt to the switching of different surfaces of the blades that need to be clamped during the processing.

[0022] like Figure 2 , Figure 3 and Figure 4 The clamping drive assembly shown includes a third gear 16, the outer surface of the third gear 16 is meshed with the threaded sleeve 15, the center of the third gear 16 is fixedly connected with a second rotating rod 17, both ends of the second rotating rod 17 are movably connected with a second support base 18, the bottom end of the second support base 18 is fixedly connected to the anti-collision shell 1, the outer surface of the second rotating rod 17 away from the anti-collision shell 1 is fixedly sleeved with a fourth gear 22, the outer surface of the threaded rod 20 is meshed with the fourth gear 22, the center of the threaded rod 20 is fixedly connected with a third rotating rod 19, the outer surface of the third rotating rod 19 close to the second gear 12 is movably sleeved with a third support base 21, the bottom end of the third support base 21 is fixedly connected to the anti-collision shell 1, and is used to drive the threaded sleeve 15 to move forward and backward; When the equipment is running, the servo motor drives the third rotating rod 19 to rotate, and the rotation of the third rotating rod 19 drives the threaded rod 20 to rotate. The third supporting base 21 is used to support the third rotating rod 19. The rotation of the threaded rod 20 drives the fourth gear 22 to rotate. The rotation of the fourth gear 22 drives the second rotating rod 17 to rotate. The second supporting base 18 is used to support the second rotating rod 17. The rotation of the second rotating rod 17 drives the third gear 16 to rotate. The rotation of the third gear 16 drives the threaded sleeve 15 to move back and forth, thereby improving the clamping accuracy and avoiding blade deformation caused by excessive transmission during the clamping process.

[0023] like Figure 2 , Figure 3 and Figure 4 The switching assembly shown includes an adjusting block 3, a side of the adjusting block 3 close to the pressing base 29 is fixedly connected to a rack 4, an outer surface of the adjusting block 3 is slidably connected to a sliding frame 5, a side of the rack 4 away from the sliding frame 5 is slidably connected to a sliding frame 6, a bottom end of the sliding frame 6 is fixedly connected to a fixing frame 7, a bottom end of the fixing frame 7 is fixedly connected to a rotating box 8, a rotating assembly is provided on the rotating box 8, and is used to adapt to different blades to facilitate faster replacement of the clamping block 34; When different clamping devices need to be switched during operation of the equipment, the worker pushes the adjusting block 3 to move forward and backward through the opening and closing movement of the switching gear 23 to switch between different clamping devices. The forward and backward movement of the adjusting block 3 drives the rack 4 to move forward and backward along the slide grooves on the sliding frame 5 and the sliding frame 6. When adjustment is required, the worker moves the rack 4 to the switching lever 24 to form an engaged transmission. The switching lever 24 rotates on the rack 4, and the rack 4 drives the wedge-shaped hexagonal frame 9 to rotate and adjust, thereby switching between different clamping devices.

[0024] like Figure 5 , Figure 6 , Figure 8 , Fig. 9 and Fig.10The blade stabilizing clamping device shown includes a plurality of clamping blocks 34, the outer surface of which is provided with a blade groove 57, and both ends of the clamping block 34 are fixedly connected with a pressing column 33, and the side of the pressing column 33 away from the clamp box 35 is fixedly connected with the sliding seat 32, and the bottom end of the sliding seat 32 is fixedly connected with the extrusion spring 31, and the outer side of the extrusion spring 31 is movably connected with a pressing bin 30, and the bottom end of the pressing bin 30 is fixedly connected with the pressing base 29, and the pressing base 29 is provided with a clamping adjustment component; When the equipment is running, the clamping block 34 is squeezed backward by force, and the clamping block 34 squeezes the sliding seat 32. A sliding groove is provided behind the sliding seat 32. After the sliding seat 32 is squeezed, it squeezes the squeezing spring 31 along the sliding groove. The bottom end of the squeezing spring 31 is fixedly connected to the pressing base 29, and the pressing base 29 is fixedly connected to the wedge-surface hexagonal frame 9, so as to solve the problem of the blade being subjected to direct clamping force, elastically clamp the blade, and protect the blade from deformation caused by direct squeezing force.

[0025] like Figure 6 , Figure 7 , Figure 8 , Fig. 9 , Fig.11 and Fig.12 The clamping assembly shown also includes a plurality of reset blocks 36, one side of the reset block 36 close to the pressing base 29 is movably connected in the clamp box 35, the top of the reset block 36 is fixedly connected to a pressing rod seat 40, the side of the pressing rod seat 40 away from the reset block 36 is fixedly connected to the wedge-face hexagonal frame 9, and both ends of the side of the clamp box 35 away from the adapting clamp 39 are fixedly connected to sliding support blocks 41, and the outer surface of the wedge-face hexagonal frame 9 is provided with a rectangular slide groove 42, and the end of the sliding support block 41 away from the clamp box 35 is slidably connected to the rectangular slide groove 42; When the equipment is running, the blade has been horizontally clamped by the clamping block 34. During the horizontal clamping process of the clamping block 34, the clamping block 34 is squeezed and drives the driving component to open and close. The opening and closing movement of the driving component drives the clamp box 35 to open and close. The clamp box 35 moves downward and drives the adaptive clamp 39 to fit and clamp the blade surface. After the adaptive clamp 39 contacts the blade surface, it generates an extrusion force on the elastic bead 38. After the elastic bead 38 is squeezed, the gap is reduced to lock the adaptive clamp 39. When the clamping block 34 rebounds, it drives the clamp box 35 to move upward, and the reset block 36 squeezes and resets the elastic bead 38 to facilitate the next clamping.

[0026] like Figure 7 , Fig.13 and Fig.14The driving assembly shown also includes a plurality of extrusion blocks 45, and the side of the extrusion block 45 close to the clamp box 35 is fixedly connected to the extrusion rod 44, and the two ends of the extrusion block 45 are fixedly connected to the first connecting rod 46, and the two ends of the first connecting rod 46 are movably connected to the first connecting arm 47, and the first connecting arm 47 is fixedly connected to the second connecting rod 48 on the side away from the first connecting rod 46, and the two ends of the second connecting rod 48 are movably connected to the second connecting arm 49, and the second connecting arm 49 is movably connected to the fixed movable rod 50 on the side away from the second connecting rod 48, and the two ends of the fixed movable rod 50 are fixedly connected to the mounting blocks 43, and the two ends of the fixed movable rod 50 are respectively fixedly connected to the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52. The mounting block 43 is provided with a rectangular slide groove 53, and the rectangular slide groove 53 is slidably connected with a sliding block 54, and the side of the sliding block 54 away from the mounting block 43 is fixedly connected to a tooth block 55, and the side of the tooth block 55 close to the fixture box 35 is fixedly connected to a connecting block 56, and the side of the connecting block 56 away from the tooth block 55 is fixedly connected to the fixture box 35; When the equipment is running, the extrusion rod 44 is subjected to the extrusion force of the clamping block 34, and the extrusion rod 44 moves backward in a straight line, and the extrusion rod 44 drives the extrusion block 45 to pull backward, and the extrusion block 45 is movably connected with the first connecting arm 47 through the first connecting rod 46, and the extrusion block 45 drives the first connecting arm 47 to move in a semicircular manner, and the first connecting arm 47 is movably connected with the second connecting arm 49 through the second connecting rod 48. The semicircular movement of the first connecting arm 47 drives the second connecting arm 49 to move in a semicircular manner, and the second connecting arm 49 is fixedly connected with the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52 through the fixed movable rod 50, and the semicircular movement of the second connecting arm 49 drives the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52 to move in a semicircular manner, and both ends of the fixed movable rod 50 are movably connected to the mounting block 43, and the semicircular movement of the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52 drives the tooth block 55 to move up and down, and the up and down movement of the tooth block 55 drives the sliding block 54 to slide up and down along the rectangular slide groove 53.

[0027] Working principle: The first step: the equipment is installed on the machine tool. When the equipment is running, the worker can place different clamping blocks 34 on the wedge surface hexagonal frame 9 according to blades of different shapes. When the equipment is running, the servo motor drives the third rotating rod 19 to rotate, and the rotation of the third rotating rod 19 drives the threaded rod 20 to rotate. The third supporting base 21 is used to support the third rotating rod 19. The rotation of the threaded rod 20 drives the fourth gear 22 to rotate. The rotation of the fourth gear 22 drives the second rotating rod 17 to rotate. The second supporting base 18 is used to support the second rotating rod 17. The rotation of the second rotating rod 17 drives the third gear 16 to rotate. The rotation of the third gear 16 drives the threaded sleeve 15 to move back and forth, thereby improving the clamping accuracy and avoiding blade deformation caused by excessive transmission during the clamping process.

[0028] Step 2: The threaded sleeve 15 moves back and forth to drive the clamping gear 25, the rotation of the clamping gear 25 drives the rotating screw 26 to rotate, the rotation of the rotating screw 26 drives the clamping arm 27 to move left and right, the clamping arm 27 drives the switching rod 24 to move left and right, and a wedge-shaped structure is formed between the wedge-surface hexagonal frame 9 and the wedge-surface inverted hexagonal frame 10. When squeezing the blade, the squeezing force can be adaptively adjusted to avoid deformation of the blade when the clamping force is too large.

[0029] The third step: after the blade is subjected to the clamping force, it squeezes the clamping block 34, and the clamping block 34 is squeezed backward by the force, and the clamping block 34 squeezes the sliding seat 32. A slide groove is provided behind the sliding seat 32. After the sliding seat 32 is squeezed, it squeezes the extrusion spring 31 along the slide groove. The bottom end of the extrusion spring 31 is fixedly connected to the pressing base 29, and the pressing base 29 is fixedly connected to the wedge surface hexagonal frame 9, so as to solve the problem of the blade being subjected to direct clamping force, elastically clamp the blade, and protect the blade from deformation caused by direct extrusion force. The extrusion rod 44 is subjected to the extrusion force of the clamping block 34.

[0030] Step 4: the extrusion rod 44 moves backward in a straight line, and the extrusion rod 44 drives the extrusion block 45 to pull backward. The extrusion block 45 is movably connected to the first connecting arm 47 through the first connecting rod 46. The extrusion block 45 drives the first connecting arm 47 to move in a semicircular manner. The first connecting arm 47 is movably connected to the second connecting arm 49 through the second connecting rod 48. The semicircular movement of the first connecting arm 47 drives the second connecting arm 49 to move in a semicircular manner. The second connecting arm 49 is fixedly connected to the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52 through the fixed movable rod 50. The semicircular movement of the second connecting arm 49 drives the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52 to move in a semicircular manner. Both ends of the fixed movable rod 50 are movably connected to the mounting block 43. The semicircular movement of the semi-toothed rotating wheel 51 and the auxiliary rotating wheel 52 drives the tooth block 55 to move up and down. The up and down movement of the tooth block 55 drives the sliding block 54 to slide up and down along the rectangular slide groove 53.

[0031] Step 5: The blade has been horizontally clamped by the clamping block 34. During the horizontal clamping process of the clamping block 34, the clamping block 34 is squeezed to drive the driving component to open and close, and the opening and closing movement of the driving component drives the clamp box 35 to open and close. The clamp box 35 moves downward to drive the adaptive clamp 39 to adaptively clamp the blade surface. After the adaptive clamp 39 contacts the blade surface, it generates an extrusion force on the elastic bead 38. After being squeezed, the elastic bead 38 reduces the gap to lock the adaptive clamp 39. When the clamping block 34 rebounds, it drives the clamp box 35 to move upward, and the reset block 36 squeezes and resets the elastic bead 38 to facilitate the next clamping.

[0032] When the clamped blade needs to be flipped: the first gear 11 is driven to rotate by a rotating motor, the first gear 11 drives the first rotating rod 13 to rotate, the second gear 12 drives the first rotating rod 13 to rotate, the first supporting base 14 is used to support the first rotating rod 13, the first rotating rod 13 rotates and drives the rotating box 8 to rotate, so as to adapt to the switching of different surfaces of the blades that need to be clamped during the processing.

[0033] When different clamping devices need to be switched during operation of the equipment: by switching the gear 23 to open and close, the worker pushes the adjusting block 3 to move forward and backward to switch between different clamping devices. The forward and backward movement of the adjusting block 3 drives the rack 4 to move forward and backward along the slide grooves on the sliding frame 5 and the sliding frame 6. When adjustment is required, the worker moves the rack 4 to the switching lever 24 to form an engaged transmission. The switching lever 24 rotates on the rack 4, and the rack 4 drives the wedge-shaped hexagonal frame 9 to rotate and adjust, thereby switching between different clamping devices.

[0034] The embodiments of the present invention are described in detail above with reference to the accompanying drawings, but the present invention is not limited thereto, and various changes can be made within the knowledge scope of technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A clamping tool for machining an axial flow fan impeller, comprising an anti-collision shell (1) and a rotating seat (2), wherein the rotating seat (2) is fixedly connected to the outer surface of the anti-collision shell (1), and a stable clamping device for multiple types of blades is provided on the rotating seat (2), characterized in that: The blade stabilizing clamping device comprises a plurality of clamping blocks (34), the outer surface of the clamping block (34) is provided with a blade groove (57) for replacing the clamping block (34) to achieve a plurality of blade edge laminations, a squeeze rod (44) is fixedly connected to the center of one side of the clamping block (34) close to the pressing column (33), and a driving component for precisely driving the lamination clamping is provided on the squeeze rod (44); The driving assembly comprises a plurality of semi-toothed rotating wheels (51) and an auxiliary rotating wheel (52). The outer surfaces of the semi-toothed rotating wheels (51) and the auxiliary rotating wheels (52) are both movably connected with tooth blocks (55) for driving the semi-toothed rotating wheels (51) to perform semi-circular motion when the extrusion rod (44) is pressed backward. The semi-circular motion of the semi-toothed rotating wheels (51) drives the tooth blocks (55) to perform linear motion. A connecting block (56) is fixedly connected to one side of the tooth blocks (55) close to the clamping block (34). A clamping assembly for elastically fitting and clamping is provided on the connecting block (56); The clamping assembly comprises a plurality of clamp boxes (35), wherein a rebound seat (37) is movably connected inside the clamp box (35), a plurality of elastic beads (38) are arranged at the top of the rebound seat (37), and an adaptable clamp (39) is movably connected on one side of the rebound seat (37) close to the clamp box (35), and when the adaptable clamp (39) fits the blade, the adaptable clamp (39) is pressed backward by the curvature of the blade surface to squeeze the elastic beads (38), and the elastic beads (38) are squeezed to tighten the gap to achieve locking, thereby fitting and clamping the blade.

2. The clamping tool for machining an axial flow fan impeller according to claim 1, characterized in that: The blade stabilizing clamping device comprises a plurality of clamping blocks (34), the outer surface of the clamping block (34) is provided with a blade groove (57), both ends of the clamping block (34) are fixedly connected with a pressing column (33), the side of the pressing column (33) away from the clamp box (35) is fixedly connected to the sliding seat (32), the bottom end of the sliding seat (32) is fixedly connected to the extrusion spring (31), the outer side of the extrusion spring (31) is movably connected with a pressing bin (30), the bottom end of the pressing bin (30) is fixedly connected to the pressing base (29), and the pressing base (29) is provided with a clamping adjustment component.

3. The clamping tool for machining an axial flow fan impeller according to claim 2, characterized in that: The clamping adjustment component comprises a wedge-surface hexagonal frame (9) and a wedge-surface inverted hexagonal frame (10), the wedge-surface hexagonal frame (9) and the wedge-surface inverted hexagonal frame (10) are both fixedly connected to a pressing base (29), the bottom end of the pressing base (29) is fixedly connected to the wedge-surface hexagonal frame (9), the center of the wedge-surface hexagonal frame (9) is fixedly connected to a switching rotating rod (24), one end of the switching rotating rod (24) away from the wedge-surface hexagonal frame (9) is fixedly connected to a switching gear (23), the outer surface of the switching rotating rod (24) is movably connected to a clamping arm (27), the bottom of the clamping arm (27) is movably sleeved with a rotating screw (26), the center of the rotating screw (26) is fixedly sleeved with a clamping gear (25), a rotating power component for driving the clamping adjustment component to clamp is provided on the clamping gear (25), and both ends of the rotating screw (26) are fixedly connected to a fixing seat (28).

4. The clamping tool for machining an axial flow fan impeller according to claim 3, characterized in that: The rotary power assembly comprises a first gear (11), the outer surface of the first gear (11) is meshingly connected to the second gear (12), the center of the second gear (12) is fixedly connected to a first rotating rod (13), the first rotating rod (13) is provided with a switching assembly for switching different clamping blocks (34), one end of the first rotating rod (13) away from the first gear (11) is fixedly connected to a rotating box (8), the outer surface of the first rotating rod (13) is movably sleeved with a first supporting base (14), the bottom end of the first supporting base (14) is fixedly connected to the anti-collision shell (1 ), a threaded sleeve rod (15) is movably sleeved on the outer surface of the first rotating rod (13), a clamping drive assembly is provided on the threaded sleeve rod (15), a third gear (16) is meshingly connected to the outer surface of the threaded sleeve rod (15), a second rotating rod (17) is fixedly connected to the center of the third gear (16), both ends of the second rotating rod (17) are movably connected to a second support base (18), the bottom end of the second support base (18) is fixedly connected to the anti-collision shell (1), and a fourth gear (22) is fixedly sleeved on the outer surface of the second rotating rod (17) away from the anti-collision shell (1).

5. The clamping tool for machining an axial flow fan impeller according to claim 4, characterized in that: The clamping drive assembly comprises a third gear (16), the outer surface of the third gear (16) is meshingly connected with the threaded sleeve rod (15), the center of the third gear (16) is fixedly connected with a second rotating rod (17), both ends of the second rotating rod (17) are movably connected with a second support base (18), the bottom end of the second support base (18) is fixedly connected to the anti-collision shell (1), the outer surface of the second rotating rod (17) away from the anti-collision shell (1) is fixedly sleeved with a fourth gear (22), the outer surface of the threaded rod (20) is meshingly connected with the fourth gear (22), the center of the threaded rod (20) is fixedly connected with a third rotating rod (19), the outer surface of the third rotating rod (19) close to the second gear (12) is movably sleeved with a third support base (21), the bottom end of the third support base (21) is fixedly connected to the anti-collision shell (1) and is used to drive the threaded sleeve rod (15) to move forward and backward.

6. The clamping tool for machining an axial flow fan impeller according to claim 5, characterized in that: The switching assembly comprises an adjusting block (3), a side of the adjusting block (3) close to the pressing base (29) is fixedly connected to a rack (4), an outer surface of the adjusting block (3) is slidably connected to a sliding frame (5), a side of the rack (4) away from the sliding frame (5) is slidably connected to a sliding frame (6), a bottom end of the sliding frame (6) is fixedly connected to a fixing frame (7), a bottom end of the fixing frame (7) is fixedly connected to a rotating box (8), and a rotating assembly is provided on the rotating box (8) for adapting to different blades to facilitate faster replacement of the clamping block (34).

7. The clamping tool for machining an axial flow fan impeller according to claim 1, characterized in that: The clamping assembly further comprises a plurality of reset blocks (36), wherein a side of the reset block (36) close to the pressing base (29) is movably connected to the fixture box (35), a top end of the reset block (36) is fixedly connected to a pressing rod seat (40), a side of the pressing rod seat (40) away from the reset block (36) is fixedly connected to a wedge-surface hexagonal frame (9), and both ends of a side of the fixture box (35) away from the adapting clamp (39) are fixedly connected to sliding support blocks (41), a rectangular slide groove (42) is provided on the outer surface of the wedge-surface hexagonal frame (9), and an end of the sliding support block (41) away from the fixture box (35) is slidably connected to the rectangular slide groove (42).

8. The clamping tool for machining an axial flow fan impeller according to claim 1, characterized in that: The driving assembly further comprises a plurality of extrusion blocks (45), wherein a side of the extrusion block (45) close to the fixture box (35) is fixedly connected to the extrusion rod (44), both ends of the extrusion block (45) are fixedly connected to a first connecting rod (46), both ends of the first connecting rod (46) are movably connected to a first connecting arm (47), a side of the first connecting arm (47) away from the first connecting rod (46) is fixedly connected to a second connecting rod (48), both ends of the second connecting rod (48) are movably connected to a second connecting arm (49), and a side of the second connecting arm (49) away from the second connecting rod (48) is movably connected to a fixed movable rod (50), both ends of the fixed movable rod (50) are fixedly connected to the mounting blocks (43), and the two ends of the fixed movable rod (50) are respectively fixedly connected to the semi-toothed rotating wheel (51) and the auxiliary rotating wheel (52), and a rectangular sliding groove (53) is provided on the mounting block (43), and a sliding block (54) is slidably connected to the rectangular sliding groove (53), and a side of the sliding block (54) away from the mounting block (43) is fixedly connected to the tooth block (55), and a side of the tooth block (55) close to the fixture box (35) is fixedly connected to the connecting block (56), and a side of the connecting block (56) away from the tooth block (55) is fixedly connected to the fixture box (35).

Images