Positioning and clamping elastic expansion sleeve combination for dynamic balance detection of circular saw blade

Abstract

The utility model discloses a positioning clamping elastic expansion sleeve combination for circular saw blade dynamic balance detection, including tray, leveling piece, threaded pull rod, rotary seat, inner conical shaft sleeve, elastic expansion sleeve and main shaft, the main shaft includes base, tray mounting seat and conical shaft, and the tray is installed on the tray mounting seat, and the inner conical shaft sleeve is sleeved in the outside of conical shaft, and the elastic expansion sleeve is sleeved in the outside of inner conical shaft sleeve, the one end of threaded pull rod is connected with the main shaft through rotary seat, inner conical shaft sleeve, the threaded pull rod is connected on the threaded pull rod, and one side of rotary seat is connected with inner conical shaft sleeve, and rotary seat pushes inner conical shaft sleeve axial movement, and inner conical shaft sleeve pushes elastic expansion sleeve radial expansion movement, the utility model discloses good adaptability can satisfy the need of more different aperture saw blade fixed, and the stress is balanced when saw blade is fixed, will not be deformed, and the centring precision is high, is favorable for the dynamic balance detection of saw blade subsequent.

Description

Technical Field

[0001] This utility model relates to a positioning clamping elastic expansion sleeve assembly for dynamic balance testing of circular saw blades. Background Technology

[0002] In the production and processing of saw blades, one step is to perform dynamic balancing tests on the saw blades. This process requires clamping and fixing the saw blades, rotating them after fixing, and then performing dynamic balancing tests using testing equipment. Currently, the fixing structure used for dynamic balancing of saw blades is an integral thin-walled sleeve-type elastic expansion sleeve. This sleeve has multiple axial cuts, causing uniform radial elastic deformation under axial force, thus tightening the inner hole of the workpiece. However, this type of expansion sleeve has the following inherent defects: 1. Overall deformation interference: While the expansion sleeve deforms as a whole with identical rigidity in all parts, when the inner hole of the workpiece has slight roundness errors or taper, the deformation of the expansion sleeve is "clamped" by the hole shape, failing to completely fill the gap and leading to decreased centering accuracy. 2. Stress concentration and fatigue: Significant stress concentration occurs at the root of the cuts. Under repeated tightening-untightening cycles, fatigue cracks are easily generated at the root of the cuts, affecting service life. 3. Limitations on saw blade hole diameter: A single integral thin-walled sleeve-type elastic expansion sleeve is suitable for a limited range of saw blades with different hole diameters, resulting in significant limitations in its use. Therefore, it is necessary to propose a positioning and clamping elastic expansion sleeve combination for dynamic balancing of circular saw blades to solve the fixing problem during dynamic balancing testing. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a positioning clamping elastic expansion sleeve combination for dynamic balance testing of circular saw blades that is easy to use, simple to operate, has a large tension radial range, uniform stress distribution after deformation, facilitates clamping of saw blades, has a high degree of fit with saw blades, can improve the centering accuracy of saw blades, and facilitates dynamic balance testing of saw blades; at the same time, it is easy to assemble and disassemble, and has practicality and wide applicability.

[0004] To solve the above problems, the present invention adopts the following technical solution: A positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of circular saw blades includes a tray, a leveling component, a threaded tie rod, a rotating seat, an inner conical bushing, an elastic expansion sleeve, and a main shaft. The main shaft includes a base, a tray mounting seat, and a conical shaft. The tray is mounted on the tray mounting seat, the inner conical bushing is sleeved on the outside of the conical shaft, and the elastic expansion sleeve is sleeved on the outside of the inner conical bushing. One end of the threaded tie rod passes through the rotating seat and the inner conical sleeve and is connected to the main shaft; the rotating seat is threadedly connected to the threaded tie rod, and one side of the rotating seat is connected to the inner conical sleeve. The rotating seat pushes the inner conical sleeve to move axially, and the inner conical sleeve pushes the elastic expansion sleeve to expand radially.

[0005] The rotating seat compresses the inner conical sleeve, causing it to move axially and radially. The expansion of the inner conical sleeve drives the expansion of the elastic sleeve, which in turn quickly fixes the saw blade. This method can accommodate saw blades with different hole diameters and is easy to replace, thus facilitating dynamic balance testing of the saw blade and improving testing efficiency and data accuracy.

[0006] Preferably, the tray is provided with multiple guide grooves, and the leveling component is installed in the guide grooves. The leveling component is axially distributed around the tapered shaft. The leveling component includes a positioning block, a leveling block and a locking screw. The positioning block is fixed in the guide groove by the locking screw, and the leveling block is threaded onto the positioning block.

[0007] This setup, through the action of the locking screws, facilitates the fixing of the positioning block in the guide groove; through the action of the leveling block, it completes the lifting of the saw blade and adjusts the levelness of the saw blade, thereby facilitating the dynamic balance detection of the saw blade.

[0008] Preferably, a limiting screw is threaded onto the tapered shaft, and an annular groove is provided on the side of the inner tapered shaft sleeve, with the limiting screw disposed in the annular groove.

[0009] The limiting screw and the annular groove are used to limit the movement of the inner tapered bushing, so that the inner tapered bushing can only move radially.

[0010] Preferably, the elastic expansion sleeve has a through hole in the middle, through which the inner conical bushing passes; multiple inner grooves are connected around the through hole, and multiple outer grooves are distributed circumferentially on the elastic expansion sleeve, the inner grooves and outer grooves dividing the elastic expansion sleeve into elastic units connected in sequence.

[0011] The design of the inner and outer grooves ensures uniform stress and good consistency during the expansion of the elastic sleeve, increases the fit with the saw blade, and makes the force at the saw blade connection point more even, resulting in better saw blade alignment and improved accuracy of saw blade dynamic balance test data.

[0012] Preferably, the interior of the inner tapered bushing has a tapered hole, and the shape of the tapered hole matches the outer shape of the tapered shaft.

[0013] By using a tapered hole and tapered shaft structure, the inner tapered bushing can expand radially during axial movement, thereby fixing the saw blade.

[0014] Preferably, the inner conical bushing is provided with tensioning groove one, tensioning groove two and tensioning groove three, and the inner conical bushing is provided with a central hole in the axial direction. Tensioning groove two and tensioning groove three are connected to the central hole; the lower end of the tensioning groove passes through the inner conical bushing.

[0015] By setting tension groove one, tension groove two, and tension groove three, the inner tapered bushing also has a radial expansion function, which, in conjunction with the elastic expansion sleeve, enables the saw blade to be quickly fixed.

[0016] Preferably, the threaded rod includes a rotating structure, an annular limiting step, and a threaded structure; the spindle has an axial hole at its center, and the threaded structure of the threaded rod is threadedly connected to the axial hole of the spindle.

[0017] By setting the threaded structure, the rotation adjustment function of the threaded tie rod is realized to meet the needs of different inner tapered bushings, and indirectly meet the needs of clamping and fixing saw blades with different hole diameters.

[0018] Preferably, the annular limiting step is disposed between the tapered shaft and the inner tapered bushing.

[0019] By controlling the axial movement distance of the inner conical bushing and the radial expansion dimension of the elastic expansion sleeve through the cooperation between the annular limiting step and the rotating seat, a rapid fixing operation of saw blades with the same hole diameter can be achieved.

[0020] The beneficial effects of this utility model are: 1. The dual design of the inner tapered bushing and the elastic expansion sleeve makes the positioning expansion sleeve clamping combination more versatile and can meet the clamping requirements of saw blades with different hole diameters. At the same time, the model of the elastic expansion sleeve can be selected according to the needs of the saw blade, without the need to replace them all, which helps to reduce the cost of use.

[0021] 2. By setting up the threaded tie rod and the rotating seat, the inner tapered bushing can move axially and radially. At the same time, the inner tapered bushing pushes the elastic expansion sleeve to expand radially, thereby achieving the purpose of fixing the saw blade.

[0022] 3. By setting tension groove one, tension groove two and tension groove three on the inner tapered bushing, and by setting inner groove and outer groove on the elastic expansion sleeve, the stress distribution of the inner tapered bushing and the elastic expansion sleeve is made uniform, the elastic units compensate each other when under force, reduce fatigue, and make the fixed saw blade be subjected to uniform force and will not deform.

[0023] 4. The inner tapered bushing and the elastic expansion sleeve move around the tapered shaft and compensate for each other, which makes the centering accuracy high when the saw blade is clamped, realizing the "gap-free" installation of the saw blade, thus facilitating the subsequent dynamic balancing test of the saw blade. Attached Figure Description

[0024] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below, but this is not a limitation on the protection scope of this utility model.

[0025] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the main shaft structure of this utility model; Figure 3This is a schematic diagram showing the connection between the leveling component and the threaded tie rod of this utility model; Figure 4 This is a schematic diagram of the inner tapered bushing structure of this utility model; Figure 5 This is a schematic diagram of the threaded tie rod structure of this utility model; Figure 6 This is a schematic diagram of the elastic expansion sleeve structure of this utility model; Figure 7 This is a cross-sectional schematic diagram of the present invention.

[0026] Among them, 1. tray, 2. leveling component, 3. threaded tie rod, 4. rotating seat, 5. inner tapered bushing, 6. guide groove, 7. elastic expansion sleeve, 8. base, 9. tray mounting seat, 10. tapered shaft, 11. limit screw, 12. mounting hole one, 13. mounting hole two, 14. positioning block, 15. leveling block, 16. locking screw, 17. tension groove one, 18. tension groove two, 19. tension groove three, 20. center hole, 21. rotating structure, 22. annular limit step, 23. threaded structure, 24. axial hole, 25. annular groove, 26. through hole, 27. inner groove, 28. outer groove, 29. insertion hole. Detailed Implementation

[0027] See Figures 1 to 7 The diagram shows a positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade, comprising a tray 1, a leveling component 2, a threaded tie rod 3, a rotating seat 4, an inner conical bushing 5, an elastic expansion sleeve 7, and a main shaft. The main shaft includes a base 8, a tray mounting seat 9, and a conical shaft 10. The tray 1 is mounted on the tray mounting seat 9, the inner conical bushing 5 is sleeved on the outside of the conical shaft 10, and the elastic expansion sleeve 7 is sleeved on the outside of the inner conical bushing 5. One end of the threaded tie rod 3 passes through the rotating seat 4 and the inner conical sleeve 5 and is connected to the main shaft; the rotating seat 4 is threadedly connected to the threaded tie rod 3, and one side of the rotating seat 4 is connected to the inner conical sleeve 5. The rotating seat 4 pushes the inner conical sleeve 5 to move axially, and the inner conical sleeve 5 pushes the elastic expansion sleeve 7 to expand radially.

[0028] Furthermore, the tray 1 is provided with a plurality of guide grooves 6, and the leveling component 2 is installed in the guide grooves 6. The leveling component 2 is axially distributed around the tapered shaft 10. The leveling component 2 includes a positioning block 14, a leveling block 15 and a locking screw 16. The positioning block 14 is fixed in the guide groove by the locking screw 16, and the leveling block 15 is threadedly connected to the positioning block 14.

[0029] Furthermore, a limiting screw 11 is threaded onto the tapered shaft 10, and an annular groove 25 is provided on the side of the inner tapered sleeve 5, with the limiting screw 11 disposed in the annular groove 25.

[0030] Furthermore, the elastic expansion sleeve 7 has a through hole 26 in the middle, through which the inner conical bushing 5 passes; the through hole 26 is surrounded by multiple inner grooves 27, and the elastic expansion sleeve is circumferentially distributed with multiple outer grooves 28, which divide the elastic expansion sleeve into elastic units connected in sequence.

[0031] Furthermore, the interior of the inner conical bushing 5 is a conical hole, the shape of which matches the outer shape of the conical shaft 10.

[0032] Furthermore, the inner conical bushing 5 is provided with tensioning groove 17, tensioning groove 28 and tensioning groove 39, and the inner conical bushing 5 is provided with a central hole 20 in the axial direction. Tensioning groove 28 and tensioning groove 319 are connected to the central hole 20; the lower end of the tensioning groove passes through the inner conical bushing.

[0033] Furthermore, the threaded tie rod 3 includes a rotating structure 21, an annular limiting step 22, and a threaded structure 23.

[0034] Furthermore, the rotation of the threaded tie rod can control the radial movement distance of the inner tapered bushing through the annular limiting step.

[0035] Furthermore, the spindle has an axial hole 24 at its center, and the threaded structure of the threaded rod is threadedly connected to the axial hole of the spindle.

[0036] Furthermore, the annular limiting step 22 is disposed between the tapered shaft 10 and the inner tapered sleeve 5.

[0037] Furthermore, the base is provided with mounting hole 12, and the spindle is mounted on the rotating mechanism (not shown) through mounting hole 2 and screws, and the rotating mechanism drives the spindle to rotate.

[0038] Furthermore, the tray mounting base 9 is provided with mounting hole 2 13, and the tray and the tray mounting base are connected by screws and mounting hole 2.

[0039] Furthermore, the guide grooves 6 are distributed in a scattering pattern.

[0040] Furthermore, the rotating seat is provided with a socket 29, which is connected to the socket by a detachable columnar rod, thereby facilitating the rotation of the rotating seat and the movement of the inner conical bushing by the rotation of the rotating seat.

[0041] In use, this invention involves selecting appropriate inner conical bushings and elastic expansion sleeves based on the required center hole diameter of the saw blade. The saw blade is then fitted onto the outer side of the elastic expansion sleeve, with the lower surface of the saw blade in contact with the leveling block. The leveling block adjusts the flatness of the saw blade, ensuring good balance during rotation and facilitating dynamic balancing tests. After the saw blade is positioned, the rotating seat is rotated. The rotating seat, in conjunction with the conical shaft, compresses the inner conical bushing, causing it to move axially and expand radially. Subsequently, the inner conical bushing pushes the elastic expansion sleeve to expand radially, ensuring a tight fit and connection between the elastic expansion sleeve and the center hole of the saw blade, thus securing the saw blade. The saw blade is then dynamically balanced using a dynamic balancing testing device. After the test is completed, the rotating seat is loosened, and the inner conical bushing and elastic expansion sleeve return to their initial state under their own properties, allowing the saw blade to be removed.

[0042] The above are merely specific embodiments of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of circular saw blades, characterized in that: The device includes a tray, a leveling component, a threaded tie rod, a rotating seat, an inner conical bushing, an elastic expansion sleeve, and a main shaft. The main shaft includes a base, a tray mounting seat, and a conical shaft. The tray is mounted on the tray mounting seat, the inner conical bushing is sleeved on the outside of the conical shaft, and the elastic expansion sleeve is sleeved on the outside of the inner conical bushing. One end of the threaded tie rod passes through the rotating seat and the inner conical sleeve and is connected to the main shaft; the rotating seat is threadedly connected to the threaded tie rod, and one side of the rotating seat is connected to the inner conical sleeve. The rotating seat pushes the inner conical sleeve to move axially, and the inner conical sleeve pushes the elastic expansion sleeve to expand radially.

2. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 1, characterized in that: The tray is provided with multiple guide grooves, and leveling components are installed in the guide grooves. The leveling components are axially distributed around the tapered shaft. The leveling components include positioning blocks, leveling blocks and locking screws. The positioning blocks are fixed in the guide grooves by locking screws, and the leveling blocks are threaded onto the positioning blocks.

3. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 1, characterized in that: A limiting screw is threaded onto the tapered shaft, and an annular groove is provided on the side of the inner tapered sleeve, with the limiting screw disposed in the annular groove.

4. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 1, characterized in that: The elastic expansion sleeve has a through hole in the middle, through which the inner conical bushing passes; multiple inner grooves are connected around the through hole, and multiple outer grooves are distributed circumferentially on the elastic expansion sleeve. The inner and outer grooves divide the elastic expansion sleeve into elastic units connected in sequence.

5. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 1, characterized in that: The inner conical bushing has a conical hole inside, and the shape of the conical hole matches the shape of the conical shaft.

6. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 1, characterized in that: The inner conical bushing is provided with tensioning groove one, tensioning groove two and tensioning groove three. The inner conical bushing is provided with a central hole in the axial direction. Tensioning groove two and tensioning groove three are connected to the central hole. The lower end of the tensioning groove passes through the inner conical bushing.

7. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 1, characterized in that: The threaded tie rod includes a rotating structure, an annular limiting step, and a threaded structure; the spindle has an axial hole at its center, and the threaded structure of the threaded tie rod is threadedly connected to the axial hole of the spindle.

8. The positioning clamping elastic expansion sleeve assembly for dynamic balancing testing of a circular saw blade according to claim 7, characterized in that: The annular limiting step is positioned between the tapered shaft and the inner tapered sleeve.

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