A cutting tool grinding device

Abstract

This utility model relates to the field of grinding equipment technology, specifically disclosing a cutting tool grinding device, including a positioning and conveying mechanism. A grinding mechanism is arranged on one side of the positioning and conveying mechanism, and a dust collection mechanism is arranged above the grinding mechanism. The positioning and conveying mechanism includes a base, a first guide rail sub-guide rail, a first guide rail sub-slide, a second guide rail sub-guide rail, a second guide rail sub-slide, a clamp, and a tool to be processed. This solution achieves precise movement of the tool in the left-right and front-back directions by combining the double guide rail sub-guide rails and slides, ensuring that the contact position between the cutting edge and the grinding wheel is adjustable to adapt to the grinding needs of tools of different sizes. The clamp adopts a U-shaped structure with threaded knobs and extrusion plates to fix the tool, and uses a cylinder-driven limiting plate to assist in positioning, effectively preventing the tool from deviating during the grinding process and improving processing accuracy. In addition, the anti-detachment block design enhances the stability of the guide rail movement, further ensuring the grinding quality.

Description

Technical Field

[0001] This utility model relates to the field of grinding equipment technology, and specifically discloses a grinding equipment for cutting tools. Background Technology

[0002] Cutting tools are indispensable tools in modern industrial production and are widely used in metal processing, wood processing, stone processing, plastic processing and composite material processing.

[0003] Sharpening tools can restore their sharpness. Over time, the cutting edge of a cutting tool gradually dulls, leading to decreased cutting efficiency or even failure to complete the cutting task. Sharpening removes the worn layer on the cutting edge, restoring its sharpness and thus improving cutting efficiency and quality. For example, the utility model patent CN220481287U discloses a machine tool polishing device, including a base, a grinding component, a dust collection component, and a positioning frame. The base is a hollow trapezoid with an air intake on its inclined side. Slide grooves are provided on both sides of the inclined side, symmetrically arranged around the air intake. The grinding component is located on the upper part of the base, the dust collection component is located inside the base, and the positioning frame slides within the slide grooves. The positioning frame is n-shaped. The dust collection component includes a first baffle, a second baffle, a filter, an air pump, and a protective net. This utility model belongs to the technical field of tool polishing and grinding equipment. Specifically, it is a machine tool polishing device that polishes and grinds the cutting surface and tool handle of a tool during processing or after long-term use, reduces the need for grinding wheel replacement, and recovers the floating dust generated during grinding.

[0004] Currently, most cutting tools used for shearing are plate-shaped with sharp, strip-shaped cutting edges. After repeated use, the cutting edge area is prone to dulling. In addition, the hard contact during the shearing process can cause barbs to appear on the cutting edge. If these barbs are not sharpened, they can easily hinder the subsequent shearing process. Furthermore, the barbs can easily scratch the cut surface of the object being sheared. Therefore, it is necessary to periodically process the cutting edge of shearing tools to ensure their continued quality for use. Utility Model Content

[0005] In view of this, the purpose of this utility model is to provide a cutting tool grinding device to solve the problem that after repeated cutting, the blade of a plate-shaped cutting tool used for shearing becomes dull and develops barbs. If it is not ground, it will affect the subsequent processing quality of the cut object.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a cutting tool grinding device, including a positioning and conveying mechanism, a grinding mechanism is provided on one side of the positioning and conveying mechanism, and a dust collection mechanism is provided above the grinding mechanism;

[0007] The positioning and conveying mechanism includes a base, a guide rail sub-rail one, a guide rail sub-slide one, a guide rail sub-rail two, a guide rail sub-slide two, a clamping seat, and a workpiece tool;

[0008] The grinding mechanism includes a support frame, a second cylinder, a motor, a shaft, and a grinding wheel;

[0009] The dust collection mechanism includes a mounting plate, an air pump, and a dust collection cylinder.

[0010] Furthermore, a first guide rail is provided above the base, and the first guide rail is symmetrically distributed along both sides of the base. A first guide rail slide is slidably disposed on the surface of the first guide rail. An anti-detachment block is provided on both sides of the first guide rail. The same second guide rail is provided at the upper end of the two second guide rail slides distributed along both sides. A second guide rail slide is slidably disposed on the surface of the second guide rail. An anti-detachment block is provided at both ends of the second guide rail. A connecting plate is vertically disposed on the surface of the second guide rail slide.

[0011] Furthermore, a clamping seat is provided on one side of the connecting plate. The clamping seat has a U-shaped structure. A threaded sleeve is provided through the upper end of the clamping seat. A threaded knob is installed on the inner side of the clamping seat. An extrusion plate is provided at the lower end of the threaded knob. A work-in-process tool is provided on the inner side of the clamping seat. The upper end face of the work-in-process tool is in close contact with the lower end face of the extrusion plate.

[0012] Furthermore, a cylinder is provided at the lower end of the clamping seat. The cylinders are symmetrically distributed along both sides of the clamping seat. A piston rod for extension and retraction is provided inside the cylinder. A limit plate is provided at the end of the piston rod. One end of the limit plate is fitted to the side of the tool being processed.

[0013] Furthermore, cylinders 2 are provided at both the upper and lower ends of the support frame. Piston rods 2 for telescopic extension are provided inside cylinders 2. A motor is provided at the end of piston rod 2. A drive shaft is provided inside the motor. One end of the drive shaft extends outward through the interior of the motor. A grinding wheel is provided at the end of the drive shaft away from the motor.

[0014] Furthermore, a positioning disc is provided through the surface of the machine shaft. The positioning disc is closely attached to the surface of the grinding wheel. A central hole is provided at the center of the grinding wheel. The inner wall of the central hole is slidably sleeved with the surface of the machine shaft. Several positioning posts are distributed at one end of the positioning disc near the grinding wheel. Several positioning grooves corresponding to the positions of the positioning posts are provided on one side of the grinding wheel near the positioning disc. The surface of the positioning post slides into and engages with the inside of the positioning groove.

[0015] Furthermore, the end of the machine shaft away from the motor is provided with an external thread, and a threaded cap is fitted on the side of the grinding wheel away from the positioning plate. The end face of the threaded cap is tightly fitted with the surface of the grinding wheel, and the inside of the threaded cap is threadedly connected to the external thread.

[0016] Furthermore, the mounting plate is located at the upper end of the support frame. A dust suction pipe is installed through the end of the mounting plate away from the support frame. An air pump is installed on the upper part of the mounting plate near the support frame. A dust collection cylinder is installed at the port of the air pump. One end of the dust collection cylinder is connected to the air inlet flange of the air pump, and the end of the dust collection cylinder away from the air pump is connected to the upper flange of the dust suction pipe. A dust collection bag is installed inside the dust collection cylinder. Connecting rods are distributed on the surface of the dust collection bag. The two ends of the connecting rods are respectively bonded to the inside of the dust collection cylinder and the inner wall of the dust collection bag with resin adhesive.

[0017] The working principle and beneficial effects of this solution are as follows: 1. This solution achieves precise movement of the workpiece in the left and right and front and back directions by combining the dual guide rails and the slide, ensuring that the contact position between the cutting edge and the grinding wheel is adjustable to meet the grinding needs of tools of different sizes. The clamp adopts a U-shaped structure with threaded knobs and extrusion plates to fix the tool, and uses a cylinder-driven limit plate to assist in positioning, effectively avoiding tool deviation during the grinding process and improving processing accuracy. In addition, the anti-detachment block design enhances the stability of the guide rail movement and further ensures the grinding quality.

[0018] 2. As described in 1, the grinding mechanism uses a symmetrical cylinder-driven motor and grinding wheel, which can quickly adjust the height of the grinding wheel to match the cutting edge angle of the tool. The conical grinding wheel surface has a high degree of fit with the cutting edge, resulting in a uniform grinding effect. The grinding wheel is locked by the insertion and engagement of the positioning pin and the positioning groove and the threaded cap, making installation and disassembly simple and facilitating the replacement of worn parts.

[0019] 3. As described in 1, the dust collection mechanism generates negative pressure through an air pump, which draws the dust generated during the grinding process into the dust collection cylinder through the dust collection pipe, and is then filtered and collected by a non-woven fabric dust collection bag, effectively preventing dust from escaping and polluting the environment. The dust collection bag has built-in connecting rod support to maintain smooth ventilation and prevent it from collapsing.

[0020] Other advantages, objectives, and features of this invention will be set forth in part in the description which follows, and in part will be apparent to those skilled in the art from the following examination and study, or may be learned from practice of this invention. The objectives and other advantages of this invention can be realized and obtained through the following description. Attached Figure Description

[0021] Figure 1 This is a schematic diagram showing the distribution of the various mechanisms in the embodiment;

[0022] Figure 2 This is a front view of the overall structure of the embodiment;

[0023] Figure 3 This is a side view of the overall structure of the embodiment;

[0024] Figure 4 This is a schematic diagram of the clamp position structure in an embodiment;

[0025] Figure 5 A front view of the disassembled machine shaft and grinding wheel in an embodiment;

[0026] Figure 6 This is a side view of the disassembled machine shaft and grinding wheel in an embodiment.

[0027] Figure 7 This is a schematic diagram of the internal structure of the dust collection cylinder and dust collection bag in an embodiment.

[0028] The attached diagram is labeled as follows: 1. Positioning and conveying mechanism; 2. Grinding mechanism; 3. Dust collection mechanism; 10. Base; 11. Guide rail pair guide rail one; 12. Guide rail pair slide one; 13. Guide rail pair guide rail two; 14. Guide rail pair slide two; 15. Connecting plate; 16. Anti-detachment block one; 17. Anti-detachment block two; 1001. Clamp; 1002. Threaded sleeve; 1003. Threaded knob; 1004. Extrusion plate; 1005. Workpiece tool; 1006. Cylinder one; 1007. Limiting plate; 20. Support frame; 21. Cylinder two; 22. Motor; 23. Machine shaft; 24. Grinding wheel; 25. Positioning plate; 26. External thread; 27. Threaded cap; 28. Positioning post; 29. ​​Positioning groove; 30. Mounting plate; 31. Air pump; 32. Dust collection cylinder; 33. Dust collection pipe; 34. Dust collection bag. Detailed Implementation

[0029] The following detailed description illustrates the specific implementation methods:

[0030] Example

[0031] like Figures 1 to 7 As shown, a cutting tool grinding device is disclosed, including a positioning and conveying mechanism 1, a grinding mechanism 2 is provided on one side of the positioning and conveying mechanism 1, and a dust collection mechanism 3 is provided above the grinding mechanism 2.

[0032] The positioning and conveying mechanism 1 includes a base 10, a first guide rail 11, a first guide rail slide 12, a second guide rail 13, a second guide rail slide 14, a clamping seat 1001, and a workpiece tool 1005.

[0033] The grinding mechanism 2 includes a support frame 20, a second cylinder 21, a motor 22, a shaft 23, and a grinding wheel 24;

[0034] The dust collection mechanism 3 includes a mounting plate 30, an air pump 31, and a dust collection cylinder 32.

[0035] A guide rail sub-rail 11 is provided above the base 10. The lower end of the guide rail sub-rail 11 is fixed to the surface of the base 10 with screws. The guide rail sub-rail 11 is symmetrically distributed along both sides of the base 10. A guide rail sub-slide 12 is slidably mounted on the surface of the guide rail sub-rail 11. Anti-detachment blocks 16 are provided on both sides of the guide rail sub-rail 11. The connection between the anti-detachment blocks 16 and the guide rail sub-rail 11 is fixed with screws. The upper end of the two guide rail sub-slides 12 distributed along both sides is provided with the same guide rail sub-rail 13. The lower end of the guide rail sub-rail 13 is fixed to the surface of any one of the guide rail sub-slides 12 with screws. A guide rail sub-slide 14 is slidably mounted on the surface of the guide rail sub-rail 13. Both ends of 13 are provided with anti-detachment blocks 17. The connection position of the anti-detachment blocks 17 and the guide rail 13 is fixed by screws. The surface of the guide rail slide 14 is provided with a vertically arranged connecting plate 15. The lower end of the connecting plate 15 is fixedly installed to the surface of the guide rail slide 14 by screws. When the workpiece tool 1005 needs to be ground and transported, the workpiece tool 1005 can be moved left and right by sliding the guide rail slide 12 on the guide rail 11, so that its cutting edge can be closer to the grinding wheel 24. The workpiece tool 1005 can be moved back and forth by sliding the guide rail slide 14 on the guide rail 13, so that when it contacts the grinding edge of the grinding wheel 24, it can achieve horizontal moving contact grinding.

[0036] A clamping seat 1001 is provided on one side of the connecting plate 15. The clamping seat 1001 has a U-shaped structure. The back of the clamping seat 1001 is fixedly installed on the surface of the connecting plate 15 through a bracket. A threaded sleeve 1002 is provided through the upper end of the clamping seat 1001. The connection position between the threaded sleeve 1002 and the clamping seat 1001 is fixed by welding. A threaded knob 1003 is installed on the inner side of the clamping seat 1001. A pressing plate 1004 is provided at the lower end of the threaded knob 1003. The connection position between the pressing plate 1004 and the threaded knob 1003 is fixed by screws. A work-processing tool 1005 is provided on the inner side of the clamping seat 1001. The work-processing tool 1005 is a plate-shaped tool with a strip-shaped structure at the sharp end of its cutting edge. The back end face and the lower end face of the work-processing tool 1005 are fitted against the inner wall of the clamping seat 1001. The upper end face of the work-processing tool 1005 is in close contact with the lower end face of the pressing plate 1004.

[0037] A cylinder 1006 is provided at the lower end of the clamp 1001. The surface of the cylinder 1006 is fixedly installed on the surface of the clamp 1001 through a bracket. The cylinder 1006 is symmetrically distributed on both sides of the clamp 1001. A piston rod 1 for telescopic extension is provided inside the cylinder 1006. A limit plate 1007 is provided at the end of the piston rod 1. One end of the limit plate 1007 is fitted to the side of the workpiece tool 1005. When the workpiece tool 1005 is initially placed inside the clamp 1001, before it is locked by the pressing plate 1004, it can contact the workpiece tool 1005 through the limit plates 1007 that move on both sides. In conjunction with the inner wall of the clamp 1001, multiple position limits can be achieved except for the cutting edge area to ensure its stable placement. Also, during the cutting edge grinding process, it can face the grinding wheel 24.

[0038] The support frame 20 has cylinders 21 installed at both its upper and lower ends. The cylinders 21 are fixed to the support frame 20 with screws. Each cylinder 21 contains a piston rod for extension and retraction. A motor 22 is installed at the end of the piston rod. The outer ring of the motor 22 is fixedly mounted to the end of the piston rod via a bracket. The motor 22 contains a drive shaft 23. One end of the shaft 23 extends outwards through the motor 22. A grinding wheel 24 is installed at the end of the shaft 23 furthest from the motor 22. The edge of the grinding wheel 24 is tapered, allowing for better contact with the cutting edge. The inclination is the same as the inclination of the cutting edge, ensuring the stability of the cutting edge grinding process. When the cutting edge of the workpiece 1005 needs to be processed, when the workpiece 1005 moves between the two grinding wheels 24, the piston rod of cylinder 21 extends and retracts, which enables the motor 22 to move up and down. Thus, the machine shaft 23 can bring the grinding wheel 24 into position with the cutting edge of the workpiece 1005. Then, the power supply of the motor 22 is turned on, so that the motor 22 makes the machine shaft 23 rotate, thereby enabling the grinding wheel 24 to connect and thus processing the cutting edge of the workpiece 1005.

[0039] A positioning disc 25 is provided through the surface of the machine shaft 23. The positioning disc 25 is fixed to the machine shaft 23 by screws. The positioning disc 25 is in close contact with the surface of the grinding wheel 24. A central hole is opened at the center of the grinding wheel 24. The inner wall of the central hole is slidably sleeved with the surface of the machine shaft 23. Several positioning posts 28 are distributed near the end of the positioning disc 25 close to the grinding wheel 24. One end of the positioning posts 28 is welded and fixed to the surface of the positioning disc 25. The positioning posts 28 are equidistantly distributed in a ring along the surface of the positioning disc 25. Several positioning grooves 29 corresponding to the positions of the positioning posts 28 are opened on the side of the grinding wheel 24 close to the positioning disc 25. The surface of the positioning posts 28 slides into and engages with the inside of the positioning grooves 29. The end of shaft 23 away from motor 22 is provided with external thread 26. The side of grinding wheel 24 away from positioning plate 25 is fitted with threaded cap 27. The end face of threaded cap 27 is tightly fitted with the surface of grinding wheel 24. The inside of threaded cap 27 is threadedly connected to external thread 26. When grinding wheel 24 needs to be installed, grinding wheel 24 is first slidably sleeved with shaft 23 so that it can fit in contact with positioning plate 25. At this time, positioning pin 28 and positioning groove 29 are inserted into each other to ensure that grinding wheel 24 can be stably linked when shaft 23 rotates. Then, by threading cap 27 and external thread 26 at the end of shaft 23, the position of grinding wheel 24 on shaft 23 can be locked and fixed.

[0040] Mounting plate 30 is positioned on the upper end of support frame 20. The mounting plate 30 is fixed to the support frame 20 with screws. Mounting plate 30 has a Z-shaped structure. A suction pipe 33 is threaded through the end of mounting plate 30 furthest from support frame 20. The suction pipe 33 is fixed to mounting plate 30 with screws. An air pump 31 is positioned above mounting plate 30 near support frame 20. The lower end of air pump 31 is fixed to the surface of mounting plate 30 via a bracket. A dust collection cylinder 32 is positioned at the port of air pump 31. One end of dust collection cylinder 32 connects to the air inlet flange of air pump 31, and the end of dust collection cylinder 32 furthest from air pump 31 connects to the upper flange of suction pipe 33. A dust collection bag 34, made of non-woven fabric, is installed inside dust collection cylinder 32. The opening of the bag 4 is glued to the inner wall of the dust collection cylinder 32 with resin adhesive and faces the suction pipe 33. The surface of the dust collection bag 34 is distributed with connecting rods 35. The two ends of the connecting rods 35 are glued to the inside of the dust collection cylinder 32 and the inner wall of the dust collection bag 34 with resin adhesive. The connecting rods 35 can ensure the stability of the dust collection bag 34 when it is built into the dust collection cylinder 32 and do not affect the airflow. When the grinding wheel 24 is processing the cutting edge of the workpiece tool 1005, the power of the air pump 31 is turned on. The air pump 31 can generate a suction effect, so that the dust generated during the grinding process of the grinding wheel 24 can be sucked into the dust collection cylinder 32 through the suction pipe 33 and sent into the dust collection bag 34 for collection. After collecting the dust, the dust collection bag 34 can simultaneously allow normal airflow.

[0041] In practice

[0042] The core function of the positioning and conveying mechanism 1 in this solution is to achieve precise positioning and conveying of the workpiece tool 1005 through multi-directional movement. This mechanism adopts a double-layer guide rail pair design, including a horizontal guide rail pair guide rail one 11 and a vertical guide rail pair guide rail two 13. When the guide rail pair slide one 12 slides on the guide rail pair guide rail one 11, it can drive the workpiece tool 1005 to move left and right, adjusting its horizontal distance with the grinding wheel 24. When the guide rail pair slide two 14 slides on the guide rail pair guide rail two 13, it realizes the forward and backward movement of the tool, ensuring that the contact surface between the tool edge and the grinding wheel 24 is evenly ground. Anti-detachment block one 16 and anti-detachment block two 17 are fixed at both ends of the guide rail to prevent the slide from detaching from the rail. The clamp 1001 fixes the tool through the threaded knob 1003 and the pressing plate 1004. The limit plate 1007 driven by the cylinder one 1006 further assists in positioning, ensuring that the tool does not deviate during the grinding process. This adjustment design can improve the grinding accuracy and efficiency.

[0043] The grinding mechanism 2 completes the precision grinding of the cutting edge of the tool through the coordinated action of cylinder 21 and motor 22. Cylinder 21 in the support frame 20 drives piston rod 2 to move up and down, driving motor 22 and grinding wheel 24 to adjust the height so that its conical surface matches the inclination of the cutting edge of the tool 1005 being processed. After the motor 22 is started, the machine shaft 23 drives the grinding wheel 24 to rotate at high speed. The positioning plate 25 and positioning pin 28 are inserted into the positioning groove 29 of the grinding wheel 24 to ensure stable power transmission. The locking structure of threaded cap 27 and external thread 26 further fixes the grinding wheel 24 to prevent loosening. During the grinding process, the tool is pushed between the grinding wheels 24 by the positioning and conveying mechanism 1. The uniform grinding of the cutting edge is achieved by moving back and forth and left and right. The design of the conical grinding wheel can fit the cutting edge of the tool, reduce material loss and improve surface finish.

[0044] The dust collection mechanism 3 is used to collect metal dust generated during the grinding process, keeping the working environment clean. The mounting plate 30 is fixed above the support frame 20. The dust collection pipe 33 is aligned with the contact area between the grinding wheel 24 and the cutting tool. After the air pump 31 is started, it generates negative pressure, which draws the dust into the dust collection cylinder 32 through the dust collection pipe 33. The dust collection bag 34 is made of non-woven fabric and is supported by the connecting rod 35 to keep it in an unfolded state, ensuring that the dust is efficiently filtered and retained in the bag. The purified air is discharged through the air pump 31. The resin glued bag opening design prevents dust leakage. The flanged pipe connection method facilitates disassembly and cleaning. This mechanism not only reduces the wear of dust on the equipment, but also prevents operators from inhaling harmful particles.

[0045] The above description is merely an embodiment of this utility model, and common knowledge such as specific structures and characteristics in the solution is not described in detail here. It should be noted that those skilled in the art can make several modifications and improvements without departing from the structure of this utility model, and these should also be considered within the protection scope of this utility model. These modifications and improvements will not affect the effectiveness of the implementation of this utility model or its practicality.

Claims

1. A cutting tool grinding device, characterized in that: It includes a positioning and conveying mechanism, a grinding mechanism is provided on one side of the positioning and conveying mechanism, and a dust collection mechanism is provided above the grinding mechanism; The positioning and conveying mechanism includes a base, a guide rail sub-rail one, a guide rail sub-slide one, a guide rail sub-rail two, a guide rail sub-slide two, a clamping seat, and a workpiece tool; The grinding mechanism includes a support frame, a second cylinder, a motor, a shaft, and a grinding wheel; The dust collection mechanism includes a mounting plate, an air pump, and a dust collection cylinder.

2. The cutting tool grinding equipment according to claim 1, characterized in that: A guide rail sub-guide 1 is provided above the base. The guide rail sub-guide 1 is symmetrically distributed along both sides of the base. A guide rail sub-slide 1 is slidably mounted on the surface of the guide rail sub-guide 1. Anti-detachment block 1 is provided on both sides of the guide rail sub-guide 1. The same guide rail sub-guide 2 is provided at the upper end of the two guide rail sub-slide 1 distributed along both sides. A guide rail sub-slide 2 is slidably mounted on the surface of the guide rail sub-guide 2. Anti-detachment block 2 is provided at both ends of the guide rail sub-guide 2. A connecting plate is vertically mounted on the surface of the guide rail sub-slide 2.

3. The cutting tool grinding equipment according to claim 2, characterized in that: A clamp is provided on one side of the connecting plate. The clamp has a U-shaped structure. A threaded sleeve is provided through the upper end of the clamp. A threaded knob is installed on the inner side of the clamp. An extrusion plate is provided at the lower end of the threaded knob. A workpiece is provided on the inner side of the clamp. The upper end face of the workpiece is in close contact with the lower end face of the extrusion plate.

4. The cutting tool grinding equipment according to claim 3, characterized in that: A cylinder is provided at the lower end of the clamping seat. The cylinders are symmetrically distributed on both sides of the clamping seat. A piston rod for extension and retraction is provided inside the cylinder. A limit plate is provided at the end of the piston rod. One end of the limit plate is fitted to the side of the tool being processed.

5. The cutting tool grinding equipment according to claim 4, characterized in that: The support frame has cylinders at both the top and bottom. Cylinders have piston rods for telescopic movement inside cylinders. A motor is located at the end of piston rod. A drive shaft is located inside the motor. One end of the drive shaft extends outward through the motor. A grinding wheel is located at the end of the drive shaft away from the motor.

6. The cutting tool grinding equipment according to claim 5, characterized in that: A positioning plate is provided through the surface of the machine shaft. The positioning plate is closely attached to the surface of the grinding wheel. A central hole is opened at the center of the grinding wheel. The inner wall of the central hole is slidably sleeved with the surface of the machine shaft. Several positioning pins are distributed at one end of the positioning plate near the grinding wheel. Several positioning grooves corresponding to the positions of the positioning pins are opened on the side of the grinding wheel near the positioning plate. The surface of the positioning pin slides into and connects with the inside of the positioning groove.

7. A cutting tool grinding device according to claim 6, characterized in that: The end of the machine shaft away from the motor is provided with an external thread, and a threaded cap is fitted on the side of the grinding wheel away from the positioning plate. The end face of the threaded cap is tightly fitted with the surface of the grinding wheel, and the inside of the threaded cap is threadedly connected to the external thread.

8. A cutting tool grinding device according to claim 7, characterized in that: The mounting plate is located at the top of the support frame. A dust suction pipe is installed through the end of the mounting plate away from the support frame. An air pump is installed on the upper part of the mounting plate near the support frame. A dust collection cylinder is installed at the port of the air pump. One end of the dust collection cylinder is connected to the air inlet flange of the air pump, and the end of the dust collection cylinder away from the air pump is connected to the upper flange of the dust suction pipe. A dust collection bag is installed inside the dust collection cylinder. Connecting rods are distributed on the surface of the dust collection bag. The two ends of the connecting rods are respectively bonded to the inside of the dust collection cylinder and the inner wall of the dust collection bag with resin adhesive.

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