A high-precision circular saw blade numerical control grinding equipment

Abstract

This utility model relates to the field of saw blade grinding technology, and discloses a high-precision CNC grinding device for circular saw blades, including a base, a head, and a turntable. The head is mounted on the side of the base via an electric slide rail. A grinding machine mounted on the turntable is also provided on the inner side of the head. The turntable is rotatably mounted on the surface of the base on the side of the head via a rotating rod. The turntable is connected to a servo motor installed inside the base via the rotating rod. A screw is vertically arranged in the middle of the turntable surface. This utility model's technical solution uses an iron pressure plate pressed against the upper surface of the circular saw blade. A locking nut, in conjunction with a locking cylinder and a spring, presses down and locks the iron pressure plate, thus locking the circular saw blade. During the grinding process, if vibration causes the locking nut to loosen, an electromagnet can be used to stably hold the iron pressure plate, pressing it firmly against the upper surface of the saw blade and locking it in place, preventing the locking nut from loosening and affecting the grinding accuracy.

Description

Technical Field

[0001] This utility model relates to the field of saw blade grinding technology, specifically a high-precision CNC grinding device for circular saw blades. Background Technology

[0002] Circular saw blades are cutting tools commonly used in woodworking and metalworking. They come in different materials, diameters, and tooth shapes to suit different materials and cutting needs. Grinding is the process of sharpening the saw blade to restore the sharpness of the teeth, improve cutting efficiency and quality, and extend the life of the saw blade. A suitable circular saw blade combined with a precise grinding process can ensure that cutting operations are carried out efficiently and accurately. Using a CNC grinding machine can perform grinding processes efficiently and with high precision.

[0003] During the grinding process, the circular saw blade needs to be placed on the turntable surface, with the vertical rod of the turntable passing through the center hole of the saw blade. Then, a locking nut is tightened to secure the saw blade. However, during the grinding process, the vibration generated between the grinding machine and the saw blade can easily cause the locking nut to loosen, preventing the saw blade from being securely locked and affecting the grinding accuracy. Therefore, we propose a high-precision CNC grinding machine for circular saw blades. Summary of the Invention

[0004] The purpose of this invention is to provide a high-precision CNC grinding device for circular saw blades. By setting an iron pressure plate to press against the upper surface of the circular saw blade, and using a locking nut in conjunction with a locking cylinder and spring to press and lock the iron pressure plate, the circular saw blade is locked. During the grinding process, if vibration causes the locking nut to loosen, an electromagnet can be used to stably hold the iron pressure plate, pressing it firmly against the upper surface of the saw blade and locking it in place. This prevents the locking nut from loosening and causing the circular saw blade to loosen, thus affecting the grinding accuracy. This solves the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-precision CNC grinding device for circular saw blades, comprising a base, a head, and a turntable. The head is mounted on the side of the base via an electric slide rail. A grinding machine mounted on the turntable is also provided on the inner side of the head. The turntable is rotatably mounted on the base surface on the side of the head via a rotating rod. The turntable is connected to a servo motor installed inside the base via the rotating rod. A screw is vertically arranged in the middle of the turntable surface. The screw has threads on its outer ring except for the bottom area. Multiple electromagnets are embedded in the turntable inside the outer ring of the screw. An iron pressure plate is also provided. The iron pressure plate can be fitted onto the outer ring of the screw and placed on the turntable surface through a through-hole in its middle position. A locking cylinder with its bottom communicating with the outside is also provided. A spring is placed inside the locking cylinder, and a locking nut adapted to the screw is welded and fixed to the upper surface of the locking cylinder. The middle position of the locking nut communicates with the inside of the locking cylinder.

[0006] By adopting the above technical solution, a shim adapted to the center hole of the circular saw blade is locked below the screw. After the circular saw blade is positioned in the middle of the turntable surface by the shim, an iron pressure plate is placed on it. The locking nut, in conjunction with the locking cylinder and spring, presses down and locks the iron pressure plate. At the same time, an electromagnet is used to attract the iron pressure plate downwards. Even if the locking nut is loosened due to vibration, the iron pressure plate can still be attracted and pressed tightly on the upper surface of the circular saw blade to lock it, thus preventing the circular saw blade from loosening and affecting the grinding accuracy.

[0007] Optionally, a shim is fixed to the surface of the turntable below the screw, the shim is located at the center of the turntable surface, and the thickness of the shim is less than the thickness of the circular saw blade.

[0008] By adopting the above technical solution, the shim can be used to fit the center hole of the circular saw blade onto its outer ring, thereby positioning the circular saw blade in the middle position.

[0009] Optionally, the screw is detachably mounted on the upper surface of the turntable by screwing its bottom stud into the screw groove on the turntable surface. The stud passes through the washer and is screwed into the screw groove to lock the washer, so that the washer is detachably locked to the turntable surface.

[0010] By adopting the above technical solution, the screw and washer can be removed, allowing for the replacement of washers with different diameters to adapt them to circular saw blades with different center hole inner diameters.

[0011] Optionally, the top surface of the screw is integrally provided with a hexagonal block, the size of which is smaller than the diameter of the screw.

[0012] By adopting the above technical solution, the screw can be easily loosened and removed using a wrench and a hexagonal block.

[0013] Optionally, rubber pads are provided on the outer surface of the turntable and the bottom outer surface of the iron pressure plate, and the rubber pads are fixed to the surfaces of the turntable and the iron pressure plate by an adhesive method.

[0014] By adopting the above technical solution, the rubber pads pressed against the upper and lower surfaces of the circular saw blade can provide a better and more slip-resistant pressing and locking effect on the circular saw blade.

[0015] Optionally, a conductive slip ring is installed on the lower outer ring of the rotating rod, so that the electromagnet is connected to the industrial control host of the machine head through the conductive slip ring.

[0016] By adopting the above technical solution, it is ensured that the electromagnet can be successfully connected to the industrial control host when the turntable is rotating.

[0017] Compared with the prior art, the beneficial effects of the technical solution of this application are as follows:

[0018] 1. The technical solution of this application sets an iron pressure plate to press on the upper surface of the circular saw blade, and uses a locking nut in conjunction with a locking cylinder and a spring to press down and lock the iron pressure plate, thereby locking the circular saw blade. During the grinding process, if there is vibration and the locking nut loosens, it can be ensured that an electromagnet can be used to stably attract and tighten the iron pressure plate to press it against the upper surface of the saw blade and lock it, thus preventing the circular saw blade from loosening due to the loosening of the locking nut and affecting the grinding accuracy.

[0019] 2. The technical solution of this application locks a replaceable shim under the screw and ensures that the thickness of the shim is less than the thickness of the circular saw blade. A shim that is adapted to the center hole of the circular saw blade can be used to center and position the circular saw blade.

[0020] 3. The technical solution of this application has rubber pads attached and fixed to both the upper surface of the turntable and the lower surface of the iron pressure plate, which can provide a better and more slip-resistant clamping and locking effect for the circular saw blade. Attached Figure Description

[0021] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings.

[0022] Figure 1 This is a schematic diagram of the overall structure of the high-precision CNC grinding equipment for circular saw blades according to this utility model.

[0023] Figure 2 This utility model relates to a high-precision CNC gear grinding device for circular saw blades. Figure 1 Detailed structural diagram of point A in the diagram.

[0024] Figure 3 This is a schematic diagram of the high-precision circular saw blade CNC gear grinding equipment after the screw has been removed.

[0025] Figure 4 This is a schematic diagram of the bottom structure of the iron pressure plate of the high-precision circular saw blade CNC gear grinding equipment of this utility model.

[0026] In the diagram: 1. Base; 2. Machine head; 3. Turntable; 31. Electromagnet; 32. Screw groove; 4. Rotating rod; 41. Conductive slip ring; 5. Iron pressure plate; 51. Through hole; 6. Locking cylinder; 61. Spring; 62. Locking nut; 7. Screw; 71. Washer; 72. Stud; 73. Hexagonal block; 8. Rubber pad. Detailed Implementation

[0027] Please see Figure 1-4This utility model provides a technical solution: a high-precision CNC grinding device for circular saw blades, including a base 1, a head 2, and a turntable 3. The head 2 is mounted on the side of the surface of the base 1 via an electric slide rail. The head 2 can be adjusted left and right by the electric slide rail. A grinding machine mounted on the turntable is also provided on the inner side (i.e., the left side) of the head 2. The angle of the grinding machine can be adjusted, thereby adjusting the tilt angle of the grinding machine blade. This enables the grinding of different angles of the fixed circular saw blade. The detailed structure and specific working principle of the head 2 are existing known technologies, so they will not be described in further detail.

[0028] The main innovation of this application lies in the turntable 3 and its supporting structure. The turntable 3 is rotatably mounted on the surface of the base 1 on the side of the machine head 2 via the rotating rod 4. The turntable 3 is connected to the servo motor installed inside the base 1 via the rotating rod 4. The servo motor is connected to the industrial control host. The industrial control host can precisely control the servo motor to drive the turntable 3 to rotate at the required precise angle. When the circular saw blade is fixed on the upper surface of the turntable 3, precise control of the saw blade rotation angle can also be achieved.

[0029] To secure the circular saw blade, a screw 7 is vertically positioned at the center of the turntable 3. The screw 7, except for its bottom area, has threads on its outer ring. In use, the central hole of the circular saw blade is fitted onto the outer ring of the screw 7 and placed on the surface of the turntable 3. An iron pressure plate 5 is also provided. The iron pressure plate 5, through a through-hole 51 in its center, is fitted onto the outer ring of the screw 7 and rests against the upper surface of the circular saw blade placed on the turntable 3. Additionally, a locking cylinder 6, with its bottom open to the outside, is provided. A spring 61 is placed inside the locking cylinder 6. The spring 61 and the locking cylinder 6 are both fitted onto the outer ring of the screw 7. A locking nut 62 adapted to the screw 7 is welded and fixed to the upper surface of the locking cylinder 6. The middle position of the locking nut 62 is connected to the inside of the locking cylinder 6. The locking nut 62 is tightened downwards and pushes the locking cylinder 6 and the spring 61 downwards. The length of the spring 61 after compression is greater than the depth of the inside of the locking cylinder 6, thereby pressing the spring 61 against the upper surface of the iron pressure plate 5. This allows the circular saw blade to be pressed down and locked onto the surface of the turntable 3. The rotation angle of the circular saw blade can be precisely driven by the turntable 3.

[0030] To ensure that the circular saw blade is centered on the surface of the turntable 3, a shim 71 is fixed on the surface of the turntable 3 below the screw 7. The shim 71 is located at the center of the surface of the turntable 3. The thickness of the shim 71 is less than the thickness of the circular saw blade, and the diameter of the shim 71 is adapted to the inner diameter of the central hole of the circular saw blade. When placing the circular saw blade, the shim 71 is placed in the central hole of the circular saw blade, so that the circular saw blade is positioned in the center.

[0031] In order to accommodate circular saw blades with different diameter center holes, in this application, the screw 7 is detachably installed on the upper surface of the turntable 3 by screwing its bottom stud 72 into the screw groove 32 on the surface of the turntable 3. The stud 72 passes through the washer 71 and is screwed into the screw groove 32 to lock the washer 71, so that the washer 71 is detachably locked to the surface of the turntable 3. When using circular saw blades with different diameter center holes, the screw 7 can be removed to replace the washer 71.

[0032] In addition, a hexagonal block 73 is provided on the top surface of the screw 7. The size of the hexagonal block 73 is smaller than the diameter of the screw 7. A wrench can be used to rotate the screw 7 through the hexagonal block 73, which makes it easy to loosen the screw 7 and remove it.

[0033] Furthermore, rubber pads 8 are provided on the outer surface of the turntable 3 and the bottom outer surface of the iron pressure plate 5. The rubber pads 8 are fixed to the surfaces of the turntable 3 and the iron pressure plate 5 by means of adhesion, so as to achieve a stable and non-slip condition when locking the circular saw blade.

[0034] To prevent the locking nut 62 and other structures from loosening due to vibration during the grinding of the circular saw blade, multiple electromagnets 31 are embedded inside the turntable 3 on the outer ring of the screw 7. To ensure the connection between the electromagnets 31 and the industrial control host when the turntable 3 rotates, a conductive slip ring 41 is installed on the lower outer ring of the rotating rod 4, so that the electromagnets 31 are connected to the industrial control host of the machine head 2 through the conductive slip ring 41. When in use, the electromagnets 31 need to be energized to firmly attract the iron pressure plate 5 downwards. Since the iron pressure plate 5 and the locking cylinder 6 are not directly connected and fixed, the iron pressure plate 5 is pressed down and locked by magnetic attraction, which can ensure the firm locking effect on the circular saw blade and ensure that the circular saw blade will not loosen and affect the grinding accuracy.

[0035] In use, select a washer 71 of appropriate diameter and place it below the screw 7, so that the stud 72 of the screw 7 passes through the washer 71 and is screwed into the threaded groove 32. Using the hexagonal block 73 and a wrench, the stud 72 can be tightened into the threaded groove 32, so that the diameter of the washer 71 can be exactly matched with the inner diameter of the center hole of the saw blade to be sharpened. Then, place the saw blade to be sharpened above the turntable 3, so that the screw 7 passes through the center hole of the saw blade and the saw blade is supported on the surface of the turntable 3, with the washer 71 placed exactly in the center hole of the saw blade. The saw blade is centered on the turntable 3, with its outer ring protruding to the outside of the turntable 3. First, the through-hole 51 of the iron pressure plate 5 is fitted onto the outer ring of the screw 7 and pressed against the upper surface of the saw blade. The spring 61 is fitted onto the outer ring of the screw 7 above the iron pressure plate, and the locking cylinder 6 is fitted onto the outer ring of the screw 7, causing the locking nut 62 on its upper surface to be screwed downwards. Finally, the locking cylinder 6 presses down on the spring 61, which then presses against the upper surface of the iron pressure plate 5, locking the iron pressure plate 5. The control end of the electromagnet 31 is electrically connected... The slip ring 41 is connected to the industrial control host of the gear grinding machine. Before the gear grinding process, the electromagnet 31 is energized and becomes magnetic, which can pull the saw blade and the iron pressure plate 5 downwards. Then, the machine head 2 is controlled to move closer to the saw blade, and the turntable on the side of the machine head 2 drives the gear grinding machine to rotate and change the angle. The saw blade can be driven and drilled by the servo motor in the machine base 1 along with the turntable 3. The gear grinding machine is used to grind the saw blade. During the gear grinding process, even if the locking nut 62 loosens due to vibration, the iron pressure plate 5 will still... Under magnetic attraction, it will be pressed against the upper surface of the saw blade, locking it firmly to prevent the saw blade from loosening and affecting the grinding accuracy. After grinding, the machine head 2 moves to the right. After loosening the locking nut 62 with a wrench and removing it, the spring 61 and the iron pressure plate 5 are also removed, so that the electromagnet 31 is de-energized and loses its magnetism, thus allowing the saw blade to be removed. When grinding saw blades with different center hole sizes, the shim 71 can be replaced to make its diameter suitable for other saw blades with center holes of different sizes.

Claims

1. A high-precision CNC grinding machine for circular saw blades, comprising a base (1), a head (2), and a turntable (3), wherein the head (2) is mounted on the side surface of the base (1) via an electric slide rail, and a grinding machine mounted on the turntable is also provided on the inner side of the head (2), characterized in that: The turntable (3) is rotatably mounted on the surface of the base (1) on the side of the machine head (2) via the rotating rod (4). The turntable (3) is connected to the servo motor installed inside the base (1) via the rotating rod (4). A screw (7) is vertically arranged in the middle of the surface of the turntable (3). The screw (7) is threaded on the outer ring except for the bottom area. Multiple electromagnets (31) are embedded in the turntable (3) on the outer ring of the screw (7). An iron pressure plate (5) is also provided. The iron pressure plate (5) can be fitted onto the outer ring of the screw (7) and placed on the surface of the turntable (3) through the through hole (51) opened in the middle position. A locking cylinder (6) with the bottom communicating with the outside is also provided. A spring (61) is placed inside the locking cylinder (6). A locking nut (62) adapted to the screw (7) is welded and fixed on the upper surface of the locking cylinder (6). The middle position of the locking nut (62) is connected to the inside of the locking cylinder (6).

2. The high-precision CNC grinding equipment for circular saw blades according to claim 1, characterized in that: A shim (71) is fixed on the surface of the turntable (3) below the screw (7). The shim (71) is located at the center of the surface of the turntable (3), and the thickness of the shim (71) is less than the thickness of the circular saw blade.

3. The high-precision CNC grinding equipment for circular saw blades according to claim 2, characterized in that: The screw (7) is detachably mounted on the upper surface of the turntable (3) by screwing its bottom stud (72) into the screw groove (32) on the surface of the turntable (3). The stud (72) passes through the washer (71) and is screwed into the screw groove (32) to lock the washer (71), so that the washer (71) is detachably locked to the surface of the turntable (3).

4. The high-precision CNC grinding equipment for circular saw blades according to claim 3, characterized in that: The top surface of the screw (7) is provided with a hexagonal block (73), the size of which is smaller than the diameter of the screw (7).

5. The high-precision CNC grinding equipment for circular saw blades according to claim 1, characterized in that: Rubber pads (8) are provided on the outer surface of the turntable (3) and the bottom outer surface of the iron pressure plate (5). The rubber pads (8) are fixed to the surfaces of the turntable (3) and the iron pressure plate (5) by means of bonding.

6. The high-precision CNC grinding equipment for circular saw blades according to claim 1, characterized in that: A conductive slip ring (41) is installed on the lower outer ring of the rotating rod (4), so that the electromagnet (31) is connected to the industrial control host of the machine head (2) through the conductive slip ring (41).

7. The high-precision CNC grinding equipment for circular saw blades according to claim 1, characterized in that: The length of the compressed spring (61) is greater than the depth inside the locking cylinder (6).

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