A sprocket tooth pressing device

Abstract

This invention discloses a sprocket tooth pressing device, relating to the technical field of tooth pressing devices. A sprocket tooth pressing device includes a machine tool. A transmission motor can be installed on the outer side of one end of the machine tool, and the transmission motor is connected to a transmission mechanism installed inside the machine tool, thereby driving the transmission mechanism to rotate and transmit the sprocket, achieving automated processing. A bracket is provided on one side of the machine tool, allowing a fixing machine and a control box to be mounted on it. Activating the fixing machine allows one end to extend and retract, locking one side of the sprocket blank. Activating the control box starts the stamping motor. A frame is installed above the machine tool to fix a hydraulic box, on which multiple tooth pressing mechanisms are equidistantly arranged in a ring on the inner side. When sprocket tooth pressing is required, the tooth pressing mechanisms synchronously perform the tooth pressing work, making the sprocket tooth pressing more uniform and the operation between the sprocket and the chain smoother after tooth pressing.

Description

Technical Field

[0001] This invention relates to the field of tooth pressing devices, and more particularly to a tooth pressing device for a sprocket. Background Technology

[0002] Among the many mechanical devices in a factory, conveyor belts are quite common. The core component of a conveyor belt is the sprocket, which is connected to the electric motor. The rotation of the sprocket drives the chain on its outer side to rotate, thus achieving the purpose of the conveyor belt. During manufacturing, the sprocket is made by pressing a circular wheel blank with teeth arranged in a ring using a tooth pressing device. The quality of the sprocket tooth pressing process determines the transportation efficiency and service life of the conveyor belt.

[0003] The inventors of this application have found the following problems in practical use: 1. The current sprocket pressing device presses the teeth one by one during the pressing process, which cannot achieve the effect of synchronous pressing. This will result in uneven pressing distance or size of the sprocket teeth, making the transmission between the sprocket and the chain not smooth. In addition, the burr removal process after sprocket pressing is cumbersome and lacks automation, making burr removal time-consuming and laborious.

[0004] Therefore, it is necessary to provide a tooth pressing device for sprockets to solve the above-mentioned technical problems. Summary of the Invention

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a tooth pressing device for sprockets.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A sprocket tooth pressing device is constructed, including a machine tool, a worktable for pressing sprocket teeth, a transmission motor is provided on one side of the machine tool, a transmission mechanism is installed inside the machine tool, the transmission mechanism is in contact with one end of the transmission motor, a bracket one is provided above one side of the machine tool, and a bracket two is provided above the other side of the machine tool.

[0008] A fixing machine is installed at the top center of the first bracket. A control box is installed on one side of the top of the first bracket. A frame is fixedly connected to the top of the machine tool below the fixing machine. The top of the frame has multiple sliding grooves in a ring. A protective cover is provided on the top of the frame. A hydraulic box is provided on the inner side of the frame. Multiple pressing gear mechanisms are distributed in a ring at equal intervals on the inner side of the hydraulic box. A wheel blank is provided at the center of the inner side of the hydraulic box. A stamping motor is installed on both sides of the top of the frame. One end of the stamping motor passes through the inner side of the sliding groove and is connected to one end of the pressing gear mechanism. A clamping motor is installed at the top center of the second bracket. A tool box is provided on the top of the machine tool on one side of the inner side of the second bracket. One end of the clamping motor is clamped to the wheel blank.

[0009] In a sprocket pressing device provided by the present invention, a transmission motor is installed on the outer side of one end of the machine tool, and the transmission mechanism includes a main transmission belt and a secondary transmission belt. The outer side of one end of the transmission motor is rotatably connected to the inner side of one end of the main transmission belt and the secondary transmission belt. Multiple rollers are equidistantly arranged on the inner side of the machine tool. The outer side of the rollers is slidably connected to the inner side of the main transmission belt and the secondary transmission belt. The top of the machine tool is provided with symmetrical top grooves. The transmission mechanism is located above the top grooves. Symmetrical lifting mechanisms are installed on both sides of the bottom of the machine tool. Each lifting mechanism is provided with a lifting head at one end. The outer side of one lifting head is engaged with the bottom center of wheel blank one, and the outer side of the other lifting head is in contact with the bottom center of wheel blank two.

[0010] By adopting the above technical solution, it is possible to allow one end of the elevator to pass through without affecting the conveying capacity by symmetrically setting the main conveyor belt and the auxiliary conveyor belt, and the conveyor motor can drive the main conveyor belt and the auxiliary conveyor belt to rotate together for conveying.

[0011] In a sprocket pressing device provided by the present invention, one end of the fixing machine is provided with a fixing head, and the outer side of one end of the fixing head is engaged with the middle of one side of the wheel blank. One side of the control box is provided with multiple transmission lines, and one end of each transmission line is connected to the outer side of the stamping motor and the hydraulic box respectively.

[0012] By adopting the above technical solution, the extension and retraction of the fixing head can make contact with and engage the outer side of the wheel blank one, so that the wheel blank one is engaged and fixed in cooperation with the elevator.

[0013] In a sprocket pressing device provided by the present invention, the pressing mechanism includes a rotating shaft, one end of the rotating shaft is provided with a fixing hole, the fixing hole is connected to one end of a stamping motor by a bolt, a gear is fixedly sleeved on the outer side of one end of the rotating shaft, and a pressing ring is movably sleeved above the gear;

[0014] By adopting the above technical solution, the stamping motor can be disassembled through the fixing hole, and the gear can be removed from the outside of the shaft for replacement through the pressure ring.

[0015] In a sprocket pressing device provided by the present invention, one end of the rotating shaft is connected to a fixed frame, and a pressing roller is movably connected to the inner side of the fixed frame. One end of the pressing roller is connected to one end of the rotating shaft. A telescopic rod is provided on one side of the fixed frame, and one end of the telescopic rod is located inside the hydraulic box.

[0016] By adopting the above technical solution, the stamping roller can rotate at high speed and rub against the outside of the sprocket. The telescopic rod can extend and retract to push the stamping roller, thereby controlling the size or shape of the pressing teeth.

[0017] In a sprocket pressing device provided by the present invention, a plurality of clamping plates are arranged in a ring at one end of the clamping motor, and a clamping block is movably installed inside one end of the clamping plate. One end of the clamping block can be engaged with the outside of one side of the wheel blank.

[0018] By adopting the above technical solution, the second wheel blank can be fixed by the clamping blocks on multiple clamping plates.

[0019] In a sprocket tooth pressing device provided by the present invention, the tool box has symmetrical grooves on one side, a screw is installed through the inside of the groove, and a grinding blade is provided inside the groove. One end of the grinding blade is movably connected to the outside of the screw. Horizontal retainers are connected to both the upper and lower ends of one side of the tool box. One end of the horizontal retainer passes through the tool box and is connected to one end of the screw.

[0020] By adopting the above technical solution, the installation of the grinding tool allows it to come into contact with and rub against the burrs on the sprocket, thereby achieving the effect of removing burrs.

[0021] In a sprocket tooth pressing device provided by the present invention, one end of the grinding blade can contact both sides of the wheel blank.

[0022] Compared with related technologies, the sprocket tooth pressing device provided by the present invention has the following beneficial effects:

[0023] I. This invention features a conveyor mechanism installed inside the machine tool, symmetrically designed with a main conveyor belt and a secondary conveyor belt. This symmetrical design allows one end of a lifting mechanism to pass through the machine tool's interior and be positioned above it. When an unprocessed wheel blank is placed above the conveyor mechanism at one end, it is positioned directly below the hydraulic box via transmission. The lifting head lifts the bottom of the wheel blank to the inner center of the hydraulic box for gear pressing. After processing, the lifting head retracts, allowing the wheel blank to fall back above the conveyor mechanism. The conveyor mechanism then transports the wheel blank to directly below the support, where another lifting head lifts it again, facilitating the removal of burrs from the sprocket's surface by the tool box. Through the cooperation of the conveyor mechanism and the lifting mechanism, the sprocket gear pressing and burr removal processes are automated, improving the efficiency of sprocket gear pressing.

[0024] II. This invention employs a hydraulic box, through which multiple pressing tooth mechanisms can be installed in a ring, allowing the pressing tooth mechanisms to be evenly distributed around the wheel blank. The control box can control multiple telescopic rods to simultaneously push the stamping rollers close to the wheel blank, and by starting the stamping motor, one of the rotating shafts can be driven to rotate. Through the installation of gears, it can mesh with multiple other gears, so that the rotation of one rotating shaft causes multiple gears to rotate, thereby driving multiple stamping rollers to rotate at high speed simultaneously. Through the contact and friction between the outer side of the stamping roller and the outer side of the wheel blank, the pressing of the sprocket teeth can be achieved synchronously and evenly, making the operation between the sprocket and the chain smoother after the sprocket is manufactured.

[0025] Third, this invention utilizes a clamping motor installed above the second bracket. The clamping plate and clamping block can clamp and fix the second wheel blank after the gear pressing process. By setting the tool box and adjusting the distance between the two symmetrical grinding tools, one end of the grinding tool can be located on the upper and lower sides of the tooth opening of the second wheel blank. Then, by starting the clamping motor, one end of the second wheel blank is driven to rotate at high speed. When the second wheel blank rotates at high speed, the burrs on its outer side will rub against one end of the grinding tool, thereby quickly removing the burrs on the outer side of the sprocket, making the burr removal process time-saving and labor-saving.

[0026] In summary, this invention places the unprocessed wheel blank 1 above the conveying mechanism, which then positions it directly below the hydraulic box. Activating the lifting mechanism lifts it to the center of the hydraulic box. Starting the stamping motor causes the shaft to rotate, driving the stamping rollers to rotate at high speed. Simultaneously, gears also rotate, engaging with multiple gears to synchronize their rotation and drive multiple stamping rollers to rotate at high speed. The extension rod pushes the stamping rollers to simultaneously contact the outer side of the wheel blank 1 for friction and tooth pressing, achieving a uniform tooth pressing effect. After tooth pressing, the retracting lifting mechanism lowers the blank 1 above the conveying mechanism, automatically conveying it to the bottom of the support bracket 2. Another lifting mechanism lifts the processed wheel blank 2, which is then fixed by a clamping motor and rotated at high speed, causing the burrs on the outer side of the wheel blank 2 to rub against one end of the grinding tool. This achieves the goal of efficiently removing sprocket burrs in a time-saving and labor-saving manner. Attached Figure Description

[0027] Figure 1 A schematic diagram of a preferred embodiment of a sprocket tooth pressing device provided by the present invention;

[0028] Figure 2 This is a cross-sectional view of the internal structure of the machine tool of the present invention;

[0029] Figure 3 This is a schematic diagram of the machine tool mechanism of the present invention;

[0030] Figure 4This is a schematic diagram of the structure of the fixed machine and control cabinet of the present invention;

[0031] Figure 5 This is a cross-sectional view of the internal structure of the framework of the present invention;

[0032] Figure 6 This is a schematic diagram of the tooth pressing mechanism of the present invention;

[0033] Figure 7 This is a schematic diagram of the clamp motor structure of the present invention;

[0034] Figure 8 This is a schematic diagram of the tool box structure of the present invention.

[0035] Numbered in the diagram: 1. Machine tool; 101. Roller; 102. Top groove; 103. Elevator; 1031. Lifting head; 2. Conveyor motor; 3. Conveying mechanism; 301. Main conveyor belt; 302. Secondary conveyor belt; 4. Support frame one; 5. Fixing machine; 501. Fixing head; 6. Control box; 601. Transmission line; 7. Frame; 701. Slide groove; 702. Protective cover; 8. Hydraulic box; 9. Gear pressing mechanism; 901. Rotary... Shaft; 9011, Fixing hole; 902, Gear; 9021, Pressure ring; 903, Fixing frame; 9031, Stamping roller; 9032, Telescopic rod; 10, Wheel blank one; 11, Stamping motor; 12, Support two; 13, Clamping motor; 1301, Clamping plate; 1302, Clamping block; 14, Tool box; 1401, Box groove; 1402, Screw; 1403, Grinding tool; 1404, Horizontal fixing device; 15, Wheel blank two. Detailed Implementation

[0036] To facilitate understanding of the present invention, a more comprehensive description will be given below with reference to the accompanying drawings. Typical embodiments of the present invention are shown in the drawings. Example 1:

[0037] Reference Figure 1As shown, a sprocket pressing device of the present invention includes a machine tool 1. A transmission motor 2 can be installed on the outer side of one end of the machine tool 1, and the transmission motor 2 is connected to a transmission mechanism 3 installed inside the machine tool 1, thereby driving the transmission mechanism 3 to rotate and transmit the sprocket to achieve automated processing. A bracket 4 is provided on one side of the machine tool 1, allowing a fixing machine 5 and a control housing 6 to be installed above it. Activating the fixing machine 5 allows one end to extend and retract, locking one side of the wheel blank 10. Activating the control housing 6 starts the stamping motor 11. A frame 7 is installed above the machine tool 1 for fixing the liquid... The pressure box 8 has multiple tooth pressing mechanisms 9 installed in a ring at equal intervals on its inner side. When tooth pressing of the sprocket is required, the tooth pressing mechanism 9 can be used to synchronously press the sprocket teeth, making the tooth pressing of the sprocket more uniform. A bracket 12 is also installed above the machine tool 1 to fix the clamping motor 13. One end of the clamping motor 13 can fix the tooth-pressed wheel blank 15, thereby driving the wheel blank 15 to rotate at high speed. At this time, the tool box 14 installed on the top of the machine tool 1 can extend and retract one end to rub against the outer side of the wheel blank 15, thereby eliminating the burr phenomenon in the production and processing of the wheel blank 15 and improving the processing efficiency after tooth pressing of the sprocket.

[0038] Reference Figure 2 As shown, the main conveyor belt 301 and the auxiliary conveyor belt 302 are connected to one end of the conveyor motor 2, so that they can be rotated to reach the sprocket above them and be conveyed and moved. The setting of the roller 101 can make the rotation and conveying of the main conveyor belt 301 and the auxiliary conveyor belt 302 smoother.

[0039] Reference Figure 3 As shown, the top groove 102 allows the conveying mechanism 3 to be positioned above it for the transmission and transport of the sprocket. The installation of the lifting platform 103 allows the lifting head 1031 to extend and retract, thereby engaging with the hole of the sprocket and lifting the sprocket. Example 2:

[0040] Reference Figure 4 and Figure 5 As shown, based on Embodiment 1, the present invention provides a technical solution: the installation of the fixing machine 5 allows the fixing head 501 to extend and retract, and the extension and retraction of the fixing head 501 can fix the upper position of the wheel blank 10 for alignment and snapping. The setting of the control box 6 allows the transmission line 601 to be connected and controlled with the stamping motor 11 and the hydraulic box 8. The installation of the hydraulic box 8 allows the pressing tooth mechanism 9 to be distributed in a ring on its inner side. The pressing tooth mechanism 9 can perform friction pressing on the outer side of the wheel blank 10. The frame 7 can fix the hydraulic box 8, and the slide groove 701 can limit the movement distance of the pressing tooth mechanism 9. The protective cover 702 can protect the end of the pressing tooth mechanism 9 located above the frame 7.

[0041] Reference Figure 6 As shown, the rotating shaft 901 can rotate to drive the gear 902 mounted on its exterior to rotate at high speed, thereby causing multiple gears 902 meshing with the gear 902 to rotate together and causing multiple rotating shafts 901 to rotate together. The stamping motor 11 can be installed or removed through the fixing hole 9011, which facilitates the removal of the pressure ring 9021. The gear 902 can be replaced according to the size of the sprocket and the tooth pressing distance. The fixing bracket 903 has a stamping roller 9031 rotatably connected to one side of it. The connection between the stamping roller 9031 and the rotating shaft 901 causes the stamping roller 9031 to rotate at high speed. The installation of the telescopic rod 9032 on the other side of the fixing bracket 903 pushes the fixing bracket 903 to move, so that the stamping roller 9031 can gradually contact the outer side of the wheel blank 10 for alignment and tooth pressing friction without affecting its rotation. Example 3:

[0042] Reference Figure 7 As shown, based on Embodiment 2, the present invention provides a technical solution: the clamp motor 13 can be installed on the top of the bracket 2 12, and multiple clamping plates 1301 are installed on one end of the clamp motor 13. A clamping block 1302 is installed inside one end of the clamping plate 1301. By moving the clamping block 1302, one end of it can be locked onto the outside of one side of the fixed wheel blank 2 15, thereby driving the wheel blank 2 15 to rotate.

[0043] Reference Figure 8 As shown, a slot 1401 is provided on one side of the tool box 14, which allows the screw 1402 to be installed inside it and the sharpening tool 1403 to be connected to the screw 1402. When the screw 1402 is rotated, the sharpening tool 1403 can move vertically up and down, so that one end of the sharpening tool 1403 is in contact with the outside of the wheel blank 15. The horizontal fixing device 1404 can move the screw 1402 to slide horizontally and rotate and fix it after movement, so that one end of the sharpening tool 1403 is close to or away from the outside of the wheel blank 15, adapting to different sprocket sizes.

[0044] The working principle of the sprocket tooth pressing device provided by the present invention is as follows:

[0045] Implementation steps for the first innovation point:

[0046] Step 1: When performing sprocket tooth pressing, simply place the unprocessed wheel blank 10 at one end above the main conveyor belt 301 and the auxiliary conveyor belt 302. By starting the transmission motor 2 and making one end rotate, the main conveyor belt 301 and the auxiliary conveyor belt 302 can be driven to rotate together to achieve the transmission effect.

[0047] Step 2: When the main conveyor belt 301 and the auxiliary conveyor belt 302 rotate and transmit, the upper wheel blank 10 can be moved. The wheel blank 10 can be moved to the bottom of the hydraulic box 8 and stop. By starting one of the lifting machines 103, the lifting head 1031 at one end is raised to lift the wheel blank 10, so that the wheel blank 10 is located in the inner center of the hydraulic box 8, so as to facilitate the gear pressing process.

[0048] Step 3: After the tooth pressing process, the lifting head 1031 retracts and lowers it above the main conveyor belt 301 and the auxiliary conveyor belt 302. The main conveyor belt 301 and the auxiliary conveyor belt 302 continue to move and transmit by the transmission motor 2, so that the wheel blank 10 is driven to be transmitted to the bottom of the support 2 12. The processed wheel blank 2 15 is lifted by the extension and retraction of another lifting head 1031 to remove burrs, thus achieving the effect of automated tooth pressing and burr removal of the sprocket and improving the efficiency of sprocket tooth pressing process.

[0049] Implementation steps for the second innovation point:

[0050] Step 1: By starting the fixing machine 5, the fixing head 501 is extended and retracted and engages with the inner hole on one side of the blank 10, thus fixing the blank 10. At this time, the control box 6 is started and the stamping motor 11 and the hydraulic box 8 are started to work through the transmission line 601.

[0051] Step 2: When the stamping motor 11 is running, one end of it will rotate at high speed and drive the rotating shaft 901 to rotate. At the same time, it will drive the gear 902 and the stamping roller 9031 to rotate at high speed. Through the meshing transmission of the gear 902, multiple gears 902 will rotate and drive multiple rotating shafts 901 and stamping rollers 9031 to rotate at high speed.

[0052] Step 3: At this time, the hydraulic box 8 can make the telescopic rod 9032 push the fixed frame 903 to move, so that one end of the rotating shaft 901 is located inside the slide groove 701 and moves. Through the movement, multiple stamping rollers 9031 synchronously contact the outer side of the wheel blank 10. The high-speed rotation of the stamping rollers 9031 can rub the outer surface of the wheel blank 10, and synchronously press the teeth of the wheel blank 10. Due to the synchronous pressing of the teeth, the wheel blank 10 is pressed more evenly, so that the sprocket can run smoothly with the chain after processing.

[0053] The third innovation point implementation steps:

[0054] Step 1: After the gear blank 15 after the gear pressing is transferred to the bottom of the bracket 12, one end of the moving clamp 1302 can be fixed to the outside of one side of the gear blank 15. Multiple clamping plates 1301 are used to clamp multiple clamping blocks 1302 on the outside of the gear blank 15.

[0055] Step 2: Start the clamp motor 13 to make one end rotate at high speed. The operation of the clamp motor 13 causes one end to drive the clamp plate 1301 to rotate, thereby making the wheel blank 15 fixed by the clamp block 1302 rotate.

[0056] Step 3: Adjust the horizontal fixing device 1404 to move the grinding blade 1403 closer to the outside of the wheel blank 15. Then, rotate the screw 1402 to move the grinding blade 1403 vertically up and down inside the box groove 1401 and bring them closer together. By bringing them closer together, one end of the grinding blade 1403 is attached to the outside of the wheel blank 15. At this time, the burrs on the outside of the wheel blank 15 will come into contact with the grinding blade 1403 and be quickly rubbed away under high-speed rotation, making the burr removal process time-saving and labor-saving.

[0057] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sprocket tooth pressing device, comprising a machine tool (1) and a worktable for pressing sprocket teeth, characterized in that: A transmission motor (2) is provided on one side of the machine tool (1), and a transmission mechanism (3) is installed inside the machine tool (1). The transmission mechanism (3) is in contact with one end of the transmission motor (2). A bracket (4) is provided above one side of the machine tool (1); a bracket (12) is provided above the other side of the machine tool (1); a fixing machine (5) is installed at the top center of the bracket (4), and a control box (6) is installed on one side of the top of the bracket (4). A frame (7) is fixedly connected to the top of the machine tool (1) below the fixing machine (5). The top of the frame (7) has multiple sliding grooves (701) in a ring shape. The top of the frame (7) is provided with a retaining device. The protective cover (702) has a hydraulic box (8) on the inner side of the frame (7). Multiple pressing tooth mechanisms (9) are distributed in a ring at equal intervals on the inner side of the hydraulic box (8). A wheel blank (10) is provided at the center of the inner side of the hydraulic box (8). A stamping motor (11) is installed on both sides of the top of the frame (7). One end of the stamping motor (11) passes through the inner side of the slide (701) and is connected to one end of the pressing tooth mechanism (9). A clamping motor (13) is installed at the center of the top of the bracket (12). A tool box (14) is provided on the top of the machine tool (1) on one side of the inner side of the bracket (12). A wheel blank (15) is clamped at one end of the clamping motor (13). A transmission motor (2) is mounted on the outer side of one end of the machine tool (1). The transmission mechanism (3) includes a main transmission belt (301) and a secondary transmission belt (302). The outer side of one end of the transmission motor (2) is rotatably connected to the inner side of one end of the main transmission belt (301) and the secondary transmission belt (302). A plurality of rollers (101) are equidistantly arranged on the inner side of the machine tool (1). The outer side of the rollers (101) is slidably connected to the inner side of the main transmission belt (301) and the secondary transmission belt (302). The top of the machine tool (1) is provided with a symmetrical top groove (102), and the transmission mechanism (3) is located above the top groove (102). The bottom of the machine tool (1) is equipped with symmetrical elevators (103) on both sides. One end of each elevator (103) is provided with a lifting head (1031). The outer side of one of the lifting heads (1031) is in contact with the bottom center of the first wheel blank (10), and the outer side of the other lifting head (1031) is in contact with the bottom center of the second wheel blank (15). The pressing mechanism (9) includes a rotating shaft (901), one end of which is provided with a fixing hole (9011). The fixing hole (9011) is connected to one end of the stamping motor (11) by bolts. A gear (902) is fixedly sleeved on the outer side of one end of the rotating shaft (901), and a pressure ring (9021) is movably sleeved above the gear (902). One end of the rotating shaft (901) is connected to a fixed frame (903), and a stamping roller (9031) is movably connected to the inner side of the fixed frame (903). One end of the stamping roller (9031) is connected to one end of the rotating shaft (901). A telescopic rod (9032) is provided on one side of the fixed frame (903), and one end of the telescopic rod (9032) is located inside the hydraulic box (8).

2. The sprocket tooth pressing device according to claim 1, characterized in that, One end of the fixing machine (5) is provided with a fixing head (501), and the outer side of one end of the fixing head (501) is engaged with the middle of one side of the blank (10). The control box (6) is provided with multiple transmission lines (601) on one side, and one end of the transmission line (601) is connected to the outer side of the stamping motor (11) and the hydraulic box (8) respectively.

3. The sprocket tooth pressing device according to claim 2, characterized in that, The clamp motor (13) has multiple clamping plates (1301) arranged in a ring at one end. A clamping block (1302) is movably installed inside one end of the clamping plate (1301). One end of the clamping block (1302) can be engaged with the outside of one side of the wheel blank (15).

4. The sprocket tooth pressing device according to claim 3, characterized in that, The tool box (14) has symmetrical grooves (1401) on one side. A screw (1402) is installed through the inside of the groove (1401). A sharpening tool (1403) is installed inside the groove (1401). One end of the sharpening tool (1403) is movably connected to the outside of the screw (1402). A horizontal fixing device (1404) is connected to both the upper and lower ends of one side of the tool box (14). One end of the horizontal fixing device (1404) passes through the tool box (14) and is connected to one end of the screw (1402).

5. The sprocket tooth pressing device according to claim 4, characterized in that, One end of the grinding tool (1403) can contact both sides of the wheel blank (15).

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