Universal blade polishing jig

Abstract

The utility model relates to mechanical processing technical field discloses a general formula blade polishing fixture, including rotating subassembly and tool assembly, tool assembly includes tool connecting rod and blade clamp, tool connecting rod includes threaded rod, and blade clamp includes tool clamp block and blade, and tool clamp block is penetrated on threaded rod, and is through spring pressure tightly, passes through bolt axial locking simultaneously, the blade includes non -hole blade and hole blade, and the threaded hole and screw of tool clamp block are equipped with with tool connecting rod coaxial, when clamping non -hole blade, screw passes through along threaded hole opposite screwing, and the upper surface of non -hole blade is pressed down tightly, and then fixed clamping non -hole blade, when clamping hole blade, screw passes through threaded hole and the central hole of hole blade opposite screwing, and then fixed clamping hole blade, the utility model can solve the problem that the existing technology cannot be flexible clamping hole blade and non -hole blade and carries out polishing on the same equipment.

Description

Technical Field

[0001] This utility model relates to the field of machining technology, specifically to a universal blade polishing fixture. Background Technology

[0002] In the machinery manufacturing industry, cutting tools play a crucial role as the core tools for machining various materials. They not only undertake the cutting tasks of various materials but also serve as a significant driving force for technological advancements and industry development. The performance and quality of cutting tools directly impact product quality and a company's competitiveness.

[0003] Polishing is a key process to ensure the performance and quality stability of cutting tools. Polishing effectively removes burrs, scratches, and other defects from the tool surface, improves surface roughness, reduces friction and wear during cutting, and thus increases tool life and cutting stability.

[0004] Currently, the industry commonly uses automated sandblasting and polishing machines to polish the surface of cutting blades during the manufacturing process. However, there are pressing problems to be solved in the actual polishing process. The polishing fixtures currently used are highly specialized, typically only suitable for one type of blade: those with holes or those without. This prevents compatible installation of both types. For blades with holes, installation and fixation are generally achieved by locating pins or similar structures engaging with the holes in the blade; for blades without holes, a clamping method using left and right grips is employed. The fixture structures for different parts vary significantly. This necessitates frequent changes of fixtures when polishing different types of blades, increasing equipment adjustment time, reducing production efficiency, and potentially affecting polishing accuracy due to installation errors during fixture changes. Consequently, it is difficult to meet the production needs of enterprises for efficient and stable polishing of different types of blades. Utility Model Content

[0005] The present invention aims to provide a universal blade polishing fixture to solve the problem in the prior art that it is impossible to flexibly clamp perforated and non-perforated blades on the same equipment for polishing.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a universal blade polishing fixture, comprising a rotating assembly and a cutting tool assembly, wherein the cutting tool assembly is detachably connected to the rotating assembly; The tool assembly includes a tool link and a blade holder, the blade holder extending through the tool link. The tool link includes a threaded rod with external threads, and the blade holder includes a tool clamping block and a blade located in the middle of the tool clamping block. The tool clamping block extends through the threaded rod and is spring-loaded and axially locked by a bolt threaded to the threaded rod. The blades include non-perforated blades and perforated blades. The tool clamping block has a threaded hole coaxial with the tool link and a screw matching the threaded hole. When a non-perforated blade is clamped, the screw is tightened along the threaded hole in opposite directions, pressing down on the upper surface of the non-perforated blade to fix and hold it. When a perforated blade is clamped, the screw is tightened through the threaded hole and the center hole of the perforated blade in opposite directions to fix and hold the perforated blade. After the tool assembly is assembled, it is connected to the rotating assembly. When the rotating assembly is running, it drives the tool link to rotate and revolve simultaneously, thereby facilitating the polishing of the blades.

[0007] The principle of this solution is as follows: Based on actual machining requirements, select the type of cutting tool (perforated or non-perforated) to be polished, and assemble the cutting tool fixture. When clamping a non-perforated cutting tool, place it in the center of the tool holder, screw it into the threaded hole, and apply downward force to press the upper surface of the cutting tool firmly, achieving stable clamping. When clamping a perforated cutting tool, place it in the center of the tool holder, and screw through the threaded hole and the center hole of the perforated cutting tool in sequence, tightening it to securely clamp the perforated cutting tool. After assembling the cutting tool fixture, insert the fixture onto the threaded rod of the tool connecting rod. During assembly, a spring is installed between the fixture and the connecting rod for compression. Simultaneously, the bolt is tightened into the external thread of the threaded rod to prevent spring rebound, completing the tool assembly assembly. Finally, install the assembled tool assembly onto the rotating assembly. During operation, the rotating assembly drives the tool connecting rod to rotate and revolve, thus polishing the cutting tool.

[0008] The advantages of this solution are: (1) This solution breaks the technical prejudice that the same equipment cannot be compatible with both perforated and non-perforated inserts. Through the setting of the tool fixture, this solution can simultaneously meet the needs of clamping two different structures, perforated and non-perforated inserts, without the need to change the fixture or make complex adjustments to the equipment, which significantly improves the versatility and applicability of the equipment, and has the advantages of strong compatibility and wide applicability.

[0009] (2) The tool clamping block in this solution is used to fasten the blade. The blade is fastened to the tool clamping plate by screws, which has the advantages of stable and reliable clamping and simple and quick operation.

[0010] (3) In this scheme, a spring is set between the blade clamp and the tool connecting rod, and the spring is pre-compressed by tightening the bolt. The elastic pre-compression force of the spring is used to continuously apply clamping pressure to ensure that the blade remains stable throughout the polishing process, thereby improving the machining accuracy and surface quality.

[0011] Preferably, as an improvement, the tool clamping block includes an integrally formed upper pressure plate, a lower pressure plate, and a sleeve; the sleeve has a hollow structure and is sleeved on the threaded rod; the upper pressure plate and the lower pressure plate are respectively located at the upper and lower ends of the sleeve to form a clamping space; the threaded hole is located on the upper pressure plate.

[0012] Beneficial effects: The tool holder is made with a one-piece molding process, which makes the overall structure more robust and can effectively withstand the vibration and cutting force during the polishing process, reduce the machining error caused by the deformation of the fixture, and improve the stability and service life of the clamping. The hollow structure of the sleeve and the threaded rod of the tool connecting rod can realize the accurate centering and axial positioning of the tool holder on the tool connecting rod. The clamping space formed by the upper and lower pressure plates facilitates the quick installation and positioning of the cutting tool, improving assembly efficiency.

[0013] Preferably, as an improvement, the distance between the upper pressure plate and the lower pressure plate is 6-10mm.

[0014] Beneficial effects: The reasonable spacing setting can accommodate blades of various shapes and sizes. Under the premise of ensuring effective clamping, it can adapt to various specifications of workpieces without changing the fixture, which enhances the versatility and flexibility of the equipment. At the same time, the reasonable spacing provides sufficient installation space for the blades, and the clamping force applied by the upper pressure plate firmly restricts the blades between the upper and lower pressure plates.

[0015] Preferably, as an improvement, both the upper pressure plate and the lower pressure plate are tri-wing structures.

[0016] Beneficial effects: The three-wing structure creates a uniform open space around the sleeve, which is beneficial for the layout and interference avoidance of polishing tools or multiple sets of blades. It also makes the distribution of clamping force and centrifugal force during rotation more uniform, reduces eccentric vibration, improves dynamic balance performance under high-speed operation, ensures stable clamping of the blades during polishing, and improves the quality of the machined surface.

[0017] Preferably, as an improvement, the tool connecting rod further includes a base located at one end of the threaded rod; the end of the base away from the threaded rod is provided with a connecting rod threaded hole and a connecting rod groove extending longitudinally, for positioning and fastening connection with the rotating assembly.

[0018] Beneficial effects: The base serves as a transitional connector between the threaded rod and the rotating assembly; the design of the connecting rod threaded hole and connecting rod groove on the base facilitates easy installation and disassembly of the threaded rod and the rotating assembly, requiring no complex tools and enabling quick maintenance and replacement.

[0019] Preferably, as an improvement, the rotating assembly includes a worktable with a plurality of tool holders that match the base; each tool holder has a boss that matches the connecting rod groove, and a tool holder threaded hole and a connecting rod screw that match the connecting rod threaded hole; when the tool connecting rod is connected to the rotating assembly, the base is sleeved on the tool holder, and the tool connecting rod is fixed on the tool holder by the snap-fit ​​engagement between the connecting rod groove and the boss, and the threaded connection between the connecting rod screw and the connecting rod threaded hole and the tool holder threaded hole.

[0020] Beneficial effects: The connecting rod groove and the boss on the tool holder cooperate to form a reliable keyway positioning structure, effectively limiting the radial and circumferential movement of the tool connecting rod during rotation, ensuring accurate tool assembly installation, high repeatability, and consistent polishing process; the connecting rod screw forms a stable threaded connection with the connecting rod threaded hole and the tool holder threaded hole, firmly fixing the base to the tool holder; several tool holders are set on the worktable, allowing multiple tool assemblies to be installed simultaneously, enabling synchronous polishing of multiple inserts, significantly improving processing efficiency. Preferably, as an improvement, the tool holders are evenly distributed along the circumference of the worktable, and the number of tool holders is 15-20.

[0021] Beneficial effects: The circumferential distribution of the tool holders ensures symmetrical mass distribution and balanced center of gravity for the tool assemblies mounted on them. This effectively reduces vibration and eccentric impact of rotating components during high-speed operation, improving the stability and safety of equipment operation and extending equipment lifespan. The number of tool holders can be flexibly configured according to actual needs, accommodating both small-batch, multi-variety production and large-batch, single-product production requirements, thus enhancing the adaptability and economy of the equipment.

[0022] Preferably, as an improvement, the longitudinal length of the connecting rod groove is one-quarter to one-third of the longitudinal length of the base.

[0023] Beneficial effects: The size and proportion design is reasonable. While ensuring that the base has sufficient structural strength, it provides appropriate clearance space for the connecting rod slot. This not only meets the requirements for stable assembly and transmission with the rotating components, but also avoids weakening the load-bearing capacity of the base due to excessive length of the slot, thus balancing structural strength and connection stability.

[0024] Preferably, as an improvement, the length of the threaded rod is 150 mm.

[0025] Beneficial effects: The appropriate length of the threaded rod provides sufficient axial adjustment margin for the pre-compression of the spring, the tightening of the bolt, and the assembly of the tool holder, ensuring that the clamping force is adjustable and stable, and avoiding assembly difficulties due to the length being too short or structural loosening due to the length being too long.

[0026] Preferably, as an improvement, the spring is a cylindrical helical compression spring, the effective number of coils of the spring is 6-8, and the length of the bolt is 12-15mm.

[0027] Beneficial effects: Cylindrical helical compression springs feature good linearity and stable stiffness, enabling them to continuously output uniform elastic preload during compression. The effective number of spring coils provides sufficient compression stroke to accommodate the stacking requirements of different numbers of tool holders, achieving flexible clamping. The bolt length design avoids both bolts that are too short to lock properly and bolts that are too long to cause interference or operational inconvenience, achieving a safe and reliable locking function.

[0028] In summary, the beneficial effects of this solution are as follows: (1) This fixture can be used for clamping both perforated and non-perforated inserts, and can be adapted to inserts of various shapes and sizes. Through a unified clamping structure design, the fixture body can be replaced without changing it, which can flexibly meet the processing needs of different types of inserts, significantly improve the equipment's versatility and production adaptability, and effectively reduce the time cost and operational complexity caused by fixture replacement.

[0029] (2) In this scheme, by using springs and bolts in tandem, operators can freely choose the number of tool clamps to be installed (such as single or multiple blocks) according to actual processing needs, and can also flexibly adjust the installation height of the tool clamp.

[0030] (3) The polishing fixture in this scheme is composed of multiple parts and has the advantages of being detachable and having strong component replaceability. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the structure of a universal blade polishing fixture provided in an embodiment of the present invention.

[0032] Figure 2 This is a schematic diagram of the tool assembly in a universal blade polishing fixture provided in an embodiment of the present invention.

[0033] Figure 3 This is a schematic diagram of the tool connecting rod in a general-purpose blade polishing fixture provided in an embodiment of the present invention.

[0034] Figure 4 for Figure 3 A magnified view of the middle connecting rod groove.

[0035] Figure 5This is a schematic diagram of the tool holder in a general-purpose blade polishing fixture provided in this embodiment of the utility model.

[0036] Figure 6 This is a schematic diagram of the tool clamping block in a general-purpose blade polishing fixture provided in an embodiment of the present utility model.

[0037] Figure 7 This is a schematic diagram of the structure of a spring in a universal blade polishing fixture provided for an embodiment of this utility model.

[0038] Figure 8 This is a schematic diagram of the bolt structure in a universal blade polishing fixture provided for an embodiment of the present utility model.

[0039] Figure 9 This is a schematic diagram of the tool holder in a universal blade polishing fixture provided in an embodiment of the present invention.

[0040] The reference numerals in the accompanying drawings include: tool connecting rod 1, threaded rod 110, base 120, connecting rod groove 121, connecting rod threaded hole 122, spring 2, blade clamp 3, tool clamping block 310, upper pressure plate 311, sleeve 312, lower pressure plate 313, blade 320, screw 330, threaded hole 340, bolt 4, tool holder 5, and worktable 6. Detailed Implementation

[0041] The following detailed description illustrates the specific implementation method: Example Basic as Figure 1 , Figure 2 As shown: A universal blade polishing fixture includes a rotating assembly and a tool assembly, the tool assembly being detachably connected to the rotating assembly; The tool assembly includes a tool link 1 and a cutting insert holder 3, with the cutting insert holder 3 extending through the tool link 1. The tool link 1 includes a threaded rod 110 with external threads. The cutting insert holder 3 includes a cutting insert block 310 and a cutting insert 320 located in the middle of the cutting insert block 310. The cutting insert block 310 extends through the threaded rod 110 and is pressed by a spring 2. A bolt 4 threaded to the threaded rod 110 prevents the spring 2 from rebounding. The cutting insert 320 includes both non-perforated and perforated cutting inserts. The cutting insert block 310 has a threaded hole coaxial with the tool link 1. 340 and screw 330 that match the threaded hole 340; when clamping a non-perforated insert, screw 330 is tightened in opposite directions along the threaded hole 340, pressing down on the upper surface of the non-perforated insert, thereby fixing and clamping the non-perforated insert; when clamping a perforated insert, screw 330 is tightened in opposite directions through the threaded hole 340 and the center hole of the perforated insert, bolt 4 presses the perforated insert, thereby fixing and clamping the perforated insert; after the insert 320 is assembled, the rotating assembly drives the tool connecting rod 1 to rotate and revolve, thereby facilitating the polishing of the insert 320.

[0042] Specifically, The tool assembly includes a tool link 1 and an insert holder 3, with the insert holder 3 extending through the tool link 1. For example... Figure 3 , Figure 4 As shown, the tool connecting rod 1 includes a threaded rod 110 with external threads and a base 120 located at one end of the threaded rod 110. The threaded rod 110 and the base 120 are integrally formed to ensure overall strength and connection reliability. The lower end of the base 120 is provided with a connecting rod threaded hole 122 and a connecting rod groove 121 extending longitudinally, for positioning and fastening connection with the rotating assembly.

[0043] In this embodiment, the threaded rod 110 is 150mm long, providing sufficient axial adjustment margin for the pre-compression of the spring 2, the locking of the bolt 4, and the assembly of the tool fixture, ensuring that the clamping force is adjustable and stable, and avoiding assembly difficulties due to excessive length or structural loosening due to excessive length.

[0044] In this embodiment, the longitudinal length of the connecting rod groove 121 is one-quarter to one-third of the longitudinal length of the base 120. This size ratio is reasonably designed, which ensures that the base 120 has sufficient structural strength while providing appropriate clearance space for the connecting rod groove 121. This satisfies the stable assembly and transmission requirements with the rotating components, while avoiding weakening the load-bearing capacity of the base 120 due to excessive groove length, thus balancing structural strength and connection stability.

[0045] like Figure 5 , Figure 6As shown, the blade holder 3 includes a tool clamping block 310, a blade 320, and a screw 330. The tool clamping block 310 includes an integrally formed upper pressure plate 311, a lower pressure plate 313, and a sleeve 312. The sleeve 312 has a hollow structure and is fitted onto the threaded rod 110 of the tool connecting rod 1. The upper pressure plate 311 and the lower pressure plate 313 are located at the upper and lower ends of the sleeve 312, respectively, forming a clamping space. The upper pressure plate 311 is provided with a threaded hole 340 coaxial with the tool connecting rod 1. The screw 330 is tightened through the threaded hole 340, thereby clamping and fixing the blade 320. The blade 320 includes non-perforated blades and perforated blades.

[0046] The distance between the upper pressure plate 311 and the lower pressure plate 313 is 6-10mm. The distance between the upper pressure plate 311 and the lower pressure plate 313 is larger than that of the blade 320 with the largest required machining thickness. This reasonable setting of the distance can accommodate blades 320 of various shapes and sizes. Specifically, in this embodiment, the distance between the upper pressure plate 311 and the lower pressure plate 313 is 8mm.

[0047] When clamping a non-perforated insert, the non-perforated insert is placed between the upper pressure plate 311 and the lower pressure plate 313. The screw 330 is screwed into the threaded hole 340 until the screw 330 contacts and presses against the upper surface of the non-perforated insert. The downward clamping force generated by the screw 330 is used to fix and clamp the non-perforated insert. When clamping a perforated insert, the perforated insert is placed between the upper pressure plate 311 and the lower pressure plate 313. The screw 330 passes through the threaded hole 340 and the center hole of the perforated insert in sequence and is screwed in opposite directions. The circumferential fastening of the screw 330 is used to fix and clamp the perforated insert.

[0048] In this embodiment, both the upper pressure plate 311 and the lower pressure plate 313 adopt a three-wing structure, with the three wings evenly distributed and arranged symmetrically around the center at 120°. This ensures a balanced overall weight distribution, good dynamic balance performance during high-speed rotation, reduces vibration, and improves polishing accuracy and equipment operational stability. Furthermore, the tool holder 310 can simultaneously mount three blades 320, symmetrically distributed along the three wings, making full use of space, significantly increasing the number of processes per polishing cycle, and improving production efficiency.

[0049] like Figure 7 , Figure 8 As shown, when the tool clamping block 310 passes through the threaded rod 110, springs 2 are sleeved between the base 120 and the tool clamping block 310, as well as between adjacent tool clamping blocks 310. The springs 2 apply a preload force to press the tool clamping block. Then, the bolts 4 are tightened by engaging the external thread on the threaded rod 110 to axially lock the entire tool assembly. This effectively limits the compression and rebound of the springs 2, preventing the clamps from loosening due to vibration or centrifugal force during equipment operation, thereby ensuring the firmness and safety of the tool clamping block 310 during the polishing process.

[0050] In this embodiment, the inner diameter of spring 2 is adapted to the outer diameter of threaded rod 110. Spring 2 is a cylindrical helical compression spring 2, which has relatively stable elastic force performance. The effective number of coils of spring 2 is 6-8, which can provide sufficient compression stroke to adapt to the stacking requirements of different numbers of tool holders 310 and achieve flexible clamping. Specifically, in this embodiment, the effective number of coils of spring 2 is 6.

[0051] In this embodiment, the length of bolt 4 is 12-15mm. Specifically, the length of bolt 4 is 15mm, which avoids the problem of bolt 4 being too short and unable to be locked, and also avoids the problem of bolt 4 being too long and causing interference or inconvenience in operation, thus achieving a safe and reliable locking function.

[0052] The synergistic action of spring 2 and bolt 4 ensures reliable fastening of the tool holder 310. Spring 2, in its pre-compressed state during assembly, provides a continuous and uniform flexible clamping force, ensuring tight contact and even force distribution among the tool holders 310. Bolt 4, when tightened in conjunction with the threaded rod 110, applies an axial locking force to the entire stacked assembly, suppressing the elastic rebound of spring 2. The combination of spring 2 and bolt 4 achieves universal and stable clamping of different types of cutting tools 320, while also ensuring reliable connection under high-speed and vibration conditions, thus improving the overall safety and durability of the fixture.

[0053] like Figure 1 and Figure 9 As shown, the rotating assembly includes a worktable 6 and multiple tool holders 5, which are evenly distributed along the circumference of the worktable 6. Each tool holder 5 has a boss that matches the connecting rod groove 121, and a tool holder threaded hole 340 and a connecting rod screw 330 that match the connecting rod threaded hole 122. When the tool connecting rod 1 is connected to the rotating assembly, the base 120 of the tool connecting rod 1 is fitted onto the tool holder 5. Then, circumferential positioning is achieved through the snap-fit ​​between the connecting rod groove 121 and the boss. Finally, the connecting rod screw 330 passes through the connecting rod threaded hole 122 and the tool holder threaded hole 340 to firmly lock the tool connecting rod 1 onto the tool holder 5, ensuring a stable and secure connection during high-speed rotation.

[0054] The number of tool holders 5 is 15-20. Specifically, in this embodiment, the number of tool holders 5 is 18. The number of tool holders 5 is set so that it can be flexibly configured according to actual needs, taking into account both small-batch, multi-variety and large-batch, single-product production needs.

[0055] Specific implementation process: Assembly of the cutting tool holder 3: Based on actual machining requirements, select the type of cutting tool 320 (with or without holes) that needs polishing and perform the fixture assembly operation. When clamping a non-hole cutting tool, place it between the upper pressure plate 311 and the lower pressure plate 313 of the tool holder 310. Screw the screw 330 into the threaded hole 340 of the upper pressure plate 311 and press it downwards against the upper surface of the non-hole cutting tool to achieve a secure fixation. When clamping a hole cutting tool, place it between the upper pressure plate 311 and the lower pressure plate 313 of the tool holder 310, aligning the center hole of the hole cutting tool with the threaded hole 340. Then, screw the screw 330 through the threaded hole 340 and screw it into the center hole of the hole cutting tool. The screw head or tightening force presses the hole cutting tool to complete the clamping. The above steps can be repeated as needed to assemble multiple tool holders 310.

[0056] Tool assembly assembly: The tool holder 310 with the pre-installed insert 320 is sequentially fitted onto the threaded rod 110 of the tool connecting rod 1. During assembly, springs 2 are installed between the base 120 and the first tool holder 310, as well as between adjacent tool holders 310. The pre-compression of the springs 2 generates a continuous flexible clamping force, ensuring that each tool holder 310 fits tightly. Finally, the bolts 4 are tightened into the external threads on the threaded rod 110 to axially lock the entire tool assembly, preventing the springs 2 from rebounding and ensuring the overall stability of the assembly.

[0057] Connecting the rotating assembly: Install the assembled tool assembly onto the rotating assembly. That is, fit the base 120 of the tool connecting rod 1 onto the tool holder 5, and align the connecting rod groove 121 on the base 120 with the boss on the tool holder 5 in the rotating assembly to achieve circumferential positioning; then, securely lock the tool connecting rod 1 onto the tool holder 5 by passing the connecting rod screw 330 through the connecting rod threaded hole 122 and the tool holder threaded hole 340 in sequence.

[0058] Polishing Process: Before starting the polishing operation, align the nozzle of the automated sandblasting and polishing machine with the surface of the blade 320 to be processed. Start the equipment; the tool holder 5 rotates around its own axis, driving the tool connecting rod 1 and the blade 320 to rotate. Simultaneously, the worktable 6 rotates, causing the tool holder 5 to revolve around its central axis, thus causing the blade 320 to rotate and revolve in space. During this process, the nozzle moves up and down vertically, uniformly and comprehensively sandblasting and polishing the selected blade 320 surface, effectively improving surface quality and processing consistency.

[0059] In summary, this solution is applicable to both perforated and non-perforated inserts 320, and can accommodate inserts 320 of various shapes and sizes. Through a unified clamping structure design, the machining needs of different types of inserts 320 can be flexibly met without changing the fixture body, significantly improving the equipment's versatility and production adaptability, and effectively reducing time costs and operational complexity caused by fixture replacement.

[0060] The above descriptions are merely embodiments of this utility model. Commonly known technical solutions and / or characteristics are not described in detail here. It should be noted that those skilled in the art can make various modifications and improvements without departing from the technical solution of this utility model. These modifications and improvements should also be considered within the scope of protection of this utility model, and will not affect the effectiveness of the implementation of this utility model or the practicality of the patent. The scope of protection claimed in this application should be determined by the content of its claims, and the specific embodiments described in the specification can be used to interpret the content of the claims.

Claims

1. A universal blade polishing fixture, characterized in that: It includes a rotating assembly and a cutting tool assembly, the cutting tool assembly being detachably connected to the rotating assembly; The tool assembly includes a tool connecting rod and several blade clamps, with the blade clamps extending through the tool connecting rod. The tool connecting rod includes a threaded rod with external threads, and each blade clamp includes a tool clamping block and a blade located in the center of the tool clamping block. The tool clamping block extends through the threaded rod and is spring-loaded and axially locked by a bolt threaded to the threaded rod. The blades include non-perforated blades and perforated blades. The tool clamping block has a threaded hole coaxial with the tool connecting rod and a screw matching the threaded hole. When a non-perforated blade is clamped, the screw is tightened along the threaded hole in opposite directions, pressing down on the upper surface of the non-perforated blade to secure it. When a perforated blade is clamped, the screw is tightened through the threaded hole and the center hole of the perforated blade in opposite directions to secure it. After the tool assembly is assembled, it is connected to the rotating assembly. When the rotating assembly operates, it drives the tool connecting rod to rotate and revolve simultaneously, facilitating the polishing of the blades.

2. The universal blade polishing fixture according to claim 1, characterized in that: The tool clamping block includes an integrally formed upper pressure plate, a lower pressure plate, and a sleeve; the sleeve has a hollow structure and is sleeved on the threaded rod; the upper pressure plate and the lower pressure plate are located at the upper and lower ends of the sleeve, respectively, forming a clamping space; the threaded hole is located on the upper pressure plate.

3. A universal blade polishing fixture according to claim 2, characterized in that: The distance between the upper pressure plate and the lower pressure plate is 6-10mm.

4. A universal blade polishing fixture according to claim 2, characterized in that: Both the upper pressure plate and the lower pressure plate have a three-wing structure.

5. A universal blade polishing fixture according to claim 1, characterized in that: The tool connecting rod also includes a base located at one end of the threaded rod; the end of the base away from the threaded rod is provided with a connecting rod threaded hole and a connecting rod groove extending longitudinally, for positioning and fastening connection with the rotating assembly.

6. A universal blade polishing fixture according to claim 5, characterized in that: The rotating assembly includes a worktable with a plurality of tool holders that match the base. Each tool holder has a boss that matches the connecting rod groove, and a tool holder threaded hole and a connecting rod screw that match the connecting rod threaded hole. When the tool connecting rod is connected to the rotating assembly, the base is sleeved on the tool holder, and the tool connecting rod is fixed to the tool holder by the snap-fit ​​engagement between the connecting rod groove and the boss, and the threaded connection between the connecting rod screw and the connecting rod threaded hole and the tool holder threaded hole.

7. A universal blade polishing fixture according to claim 6, characterized in that: The tool holders are evenly distributed along the circumference of the worktable, and the number of tool holders is 15-20.

8. A universal blade polishing fixture according to claim 5, characterized in that: The longitudinal length of the connecting rod groove is one-quarter to one-third of the longitudinal length of the base.

9. A universal blade polishing fixture according to claim 1, characterized in that: The length of the threaded rod is 150mm.

10. A universal blade polishing fixture according to claim 1, characterized in that: The spring is a cylindrical helical compression spring with an effective number of 6-8 turns, and the bolt is 12-15mm long.

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