A manufacturing process of a computerized flat knitting machine synchronous pulley

Abstract

The present application relates to the technical field of synchronous pulley manufacturing, and particularly relates to a computerized flat knitting machine synchronous pulley manufacturing process, which comprises the following steps: first, a mechanical interlocking structure is processed on a metal hub; second, after chemical cleaning and degreasing of the metal hub, a silane coupling agent is coated on the surface of the mechanical interlocking structure; third, the metal hub is preheated; fourth, a polymer composite material with polyether ether ketone as a base and containing 20% to 40% carbon fibers is selected and dried; fifth, the preheated metal hub is placed in an injection mold; the polymer composite material is heated to melt and injected into the injection mold to cover the mechanical interlocking structure; sixth, after pressure maintaining and cooling, a polymer composite material gear ring is formed on the metal hub; and then the computerized flat knitting machine synchronous pulley is slowly cooled to room temperature. The computerized flat knitting machine synchronous pulley prepared by the computerized flat knitting machine synchronous pulley manufacturing process can effectively absorb high-frequency vibration and impact.

Description

Technical Field

[0001] This invention relates to the field of synchronous belt pulley manufacturing technology, and in particular to a manufacturing process for synchronous belt pulleys on computerized flat knitting machines. Background Technology

[0002] Synchronous belt drives are widely used in various mechanical equipment with high requirements for precision and response speed, such as computerized flat knitting machines and CNC machine tools, due to their advantages of accurate transmission, high efficiency, compact structure and low noise. As the core component of this transmission system, the performance of the synchronous belt pulley directly determines the precision, life and reliability of the entire transmission system.

[0003] Existing all-metal synchronous belt pulleys suffer from significant limitations in applications requiring high-speed start-stop and rapid response due to their large moment of inertia. Furthermore, the rigid impact between the metal teeth and the synchronous belt during high-speed meshing generates noticeable noise and increases energy consumption. Plastic synchronous belt pulleys, on the other hand, utilize engineering plastics with relatively low strength, hardness, and elastic modulus. Therefore, this paper proposes a method for manufacturing synchronous belt pulleys that integrates the high strength and reliability of metal with the lightweight and high-performance properties of polymers. Summary of the Invention

[0004] Therefore, in view of the above problems, the present invention proposes a manufacturing process for synchronous belt pulleys of computerized flat knitting machines, which solves the above problems.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A manufacturing process for synchronous belt pulleys on a computerized flat knitting machine includes the following steps:

[0007] The first step is to heat-treat the metal hub and then remove it. Then, knurling and / or dovetail grooves are machined on the outer edge surface of the metal hub for bonding with the polymer composite material melt in the fifth step as a mechanical interlocking structure.

[0008] The second step is to chemically clean and degrease the metal wheel hub, and then coat the surface of the mechanical interlocking structure with a layer of silane coupling agent to form a chemical bonding interface.

[0009] The third step is to place the metal wheel hub described in the second step in an oven and preheat it to 180°C to 200°C.

[0010] The fourth step involves selecting a polymer composite material with polyetheretherketone as the matrix and containing 20% ​​to 40% carbon fiber, and drying it at a temperature of 150°C to 160°C for at least 4 hours to reduce the moisture content of the polymer composite material to below 0.02%.

[0011] Fifth step: Place the preheated metal wheel hub from the third step into the injection mold as an insert, and control the temperature of the injection mold at 180°C to 200°C.

[0012] The polymer composite material is heated to 370°C to 410°C to form a polymer composite material melt. The polymer composite material melt is injected into the cavity inside the injection mold, so that the polymer composite material melt covers the mechanical interlocking structure on the outer edge surface of the metal wheel hub.

[0013] The sixth step involves holding the molten polymer composite material injected into the injection mold under pressure and cooling at a temperature of 180°C to 200°C for 2 to 4 hours to form a polymer composite toothed ring on the outside of the metal hub. After that, it is slowly cooled to room temperature to obtain the synchronous belt pulley of the computer flat knitting machine, which is then removed from the injection mold.

[0014] Furthermore, in the third step, the metal wheel hub is placed in an oven for preheating for no less than 30 minutes.

[0015] Furthermore, in the fifth step, the injection pressure of the injection mold for injecting the polymer composite melt is between 80 MPa and 150 MPa.

[0016] Furthermore, in the sixth step, the removed computer flat knitting machine synchronous pulley is then polished by a grinding device.

[0017] The grinding device includes a machine base, an external gear located in the middle of the machine base, a central hole located in the middle of the external gear, a first adjusting shaft located on the top surface of the machine base, a first rotating rod fixed to the top of the first adjusting shaft, a grinding gear located on the side of the first rotating rod away from the first adjusting shaft, and a first driving device for driving the grinding gear to rotate.

[0018] Furthermore, the first driving device includes a first driving gear rotatably disposed in the middle of the first adjusting shaft, a driving gear shaft disposed at the bottom of the grinding gear, a second driving gear disposed above the machine base and meshing with the first driving gear, and a first motor disposed on the top surface of the machine base and used to drive the second driving gear to rotate.

[0019] By adopting the aforementioned technical solution, the beneficial effects of the present invention are:

[0020] The synchronous belt pulleys for computerized flat knitting machines manufactured using this process integrate the high strength, high rigidity, and reliable connection of metal hubs with the low density, good shock absorption and noise reduction, ultra-high wear resistance, high temperature resistance, and excellent chemical stability of polymer composite materials (based on polyetheretherketone and containing 20% ​​to 40% carbon fiber). Compared with all-steel pulleys of the same specifications, they can effectively reduce weight, and the low moment of inertia allows the equipment to achieve higher acceleration and faster response speed, while reducing drive energy consumption, significantly reducing operating noise, and improving the working environment of the equipment. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the planar structure of the synchronous belt pulley of the present invention;

[0022] Figure 2 This is the present invention. Figure 1 A schematic diagram of the AA structure in the diagram;

[0023] Figure 3 This is a schematic diagram of the planar structure of the polishing device of the present invention;

[0024] Figure 4 This is a schematic diagram of the grinding gear structure in use according to the present invention;

[0025] Figure 5 This is a schematic diagram of the first wheel and cleaning sponge ring in use according to the present invention;

[0026] Figure 6 This is the present invention. Figure 3 Enlarged structural diagram at point A in the diagram;

[0027] Figure 7 This is a front view schematic diagram of the fourth rotating rod structure of the present invention;

[0028] Figure 8 This is a schematic diagram of the first V-shaped rod, the second V-shaped rod, the first connecting rod, the second connecting rod, and the linkage rod in use according to the present invention;

[0029] Figure 9 This is a front view schematic diagram of the external gear structure in use according to the present invention.

[0030] Numbering on the map:

[0031] 1. Metal wheel hub; 2. Polymer composite material gear ring; 21. Knurled pattern; 22. Dovetail groove;

[0032] 301. Machine base; 302. Central hole; 303. External gear; 304. First adjusting shaft; 305. First rotating rod; 306. Grinding gear; 307. First drive device; 308. Second adjusting shaft; 309. Third adjusting shaft; 310. First synchronizing gear; 311. Second rotating rod; 312. Third drive device; 313. First gear shaft; 314. First wheel; 315. Cleaning sponge ring; 316. Second synchronizing gear; 317. Third rotating rod; 318. Second gear shaft; 319. Fourth rotating rod; 320. Adjusting nut; 321. First synchronizing gear 322. Second synchronous pulley; 323. Slider; 324. Third synchronous pulley; 325. Fourth synchronous pulley; 326. Grinding wheel; 327. Spring; 328. Belt; 329. First drive gear; 330. Drive gear shaft; 331. Second drive gear; 332. First motor; 333. Drive helical gear; 334. First V-bar; 335. Second V-bar; 336. Fifth rotating rod; 337. Sixth rotating rod; 338. Seventh rotating rod; 339. Eighth rotating rod; 340. First connecting rod; 341. Second connecting rod; 342. Linkage rod. Detailed Implementation

[0033] The present invention will now be further described in conjunction with the accompanying drawings and specific embodiments.

[0034] refer to Figures 1 to 9 This embodiment provides a manufacturing process for synchronous belt pulleys on computerized flat knitting machines, including the following steps:

[0035] The first step is to heat-treat the metal hub 1 and then remove it. Then, a knurled pattern 21 and / or a dovetail groove 22 are machined on the outer edge surface of the metal hub 1 for bonding with the polymer composite material melt in the fifth step as a mechanical interlocking structure.

[0036] like Figure 2 As shown, in this specific embodiment, a knurled pattern 21 is provided on the outer side of the metal hub 1. The knurled pattern 21 is a diamond-shaped knurled pattern, and a dovetail groove 22 is added to the middle of the outer side of the metal hub 1.

[0037] The second step involves chemically cleaning and degreasing the metal hub 1, and then coating the surface of the mechanical interlocking structure with a layer of silane coupling agent to form a chemical bonding interface.

[0038] The chemical cleaning and degreasing described is a conventional technique in this field and will not be elaborated upon here.

[0039] A silane coupling agent is coated onto the metal hub 1 to form stable chemical bonds on the surface of the metal hub 1. This can eliminate thermal stress, prevent the polymer composite melt from generating huge internal stress due to sudden cooling when it comes into contact with the surface of the metal hub 1, prevent cracking, improve the flowability of the polymer composite melt around the surface of the metal hub 1, and prevent weld line defects.

[0040] The third step is to place the metal hub 1 described in the second step in an oven (not shown in the figure) and preheat it to 180°C to 200°C.

[0041] Preferably, the metal hub 1 is placed in an oven for preheating for no less than 30 minutes to ensure that the temperature inside and outside the entire metal hub 1 is uniform.

[0042] The fourth step involves selecting a polymer composite material with polyetheretherketone as the matrix and containing 20% ​​to 40% carbon fiber, and drying it at a temperature of 150°C to 160°C for at least 4 hours to reduce the moisture content of the polymer composite material to less than 0.02%.

[0043] In this specific embodiment, the carbon fiber content in the polymer composite material is preferably 25%.

[0044] Polyetheretherketone (PEEK) is a crystalline polymer with low density, good shock absorption and noise reduction properties, ultra-high wear resistance, high temperature resistance, and excellent chemical stability.

[0045] The fifth step is to place the preheated metal hub 1 from the third step into the injection mold (not shown in the figure) as an insert, and control the temperature of the injection mold at 180°C to 200°C.

[0046] The polymer composite material is heated to 370°C to 410°C to form a polymer composite material melt. The polymer composite material melt is injected into the cavity inside the injection mold, so that the polymer composite material melt covers the mechanical interlocking structure on the outer edge surface of the metal hub 1.

[0047] In a preferred embodiment of this invention, the polymer composite material is heated to 390°C until it melts to form a polymer composite material melt.

[0048] The injection pressure of the injection mold for injecting polymer composite material melt is between 80MPa and 150MPa, which can provide sufficient power to ensure that the polymer composite material melt can overcome the high viscosity brought by carbon fiber and quickly fill every corner of the cavity inside the injection mold.

[0049] Injection molds are existing equipment in this field, and the methods of using injection molds are conventional technical means in this field, which will not be described in detail here.

[0050] Step 6: The polymer composite material melt injected into the injection mold is held under pressure and cooled at a temperature of 180°C to 200°C for 2 to 4 hours to form a polymer composite material toothed ring 2 on the outside of the metal hub 1; then it is slowly cooled to room temperature to obtain the computer flat knitting machine synchronous belt pulley, which is then removed from the injection mold.

[0051] Through a dual mechanism of mechanical interlocking and chemical bonding with silane coupling agents, a strong bond is ensured between the metal hub 1 and the polymer composite gear ring 2, enabling the transmission of enormous torque without relative slippage or detachment. The mechanical interlocking structure, a combination of cross-knurled 21 and annular dovetail groove 22, provides the polymer composite gear ring 2 with excellent axial and radial resistance to disengagement.

[0052] The metal hub 1 is heated and coated with a silane coupling agent to form stable chemical bonds on the metal surface. This can eliminate thermal stress, prevent the polymer composite molten material from generating huge internal stress due to sudden cooling when it comes into contact with the metal hub 1, prevent cracking, improve the flowability of the polymer composite molten material around the metal hub 1, and prevent weld line defects.

[0053] Furthermore, in the sixth step, the removed computer flat knitting machine synchronous pulley is then polished using a grinding device.

[0054] The grinding device includes a machine base 301, an external gear 303 located in the middle of the machine base 301, a central hole 302 rotatably located in the middle of the external gear 303, a first adjusting shaft 304 rotatably located on the top surface of the machine base 301, a first rotating rod 305 fixed to the top of the first adjusting shaft 304, a grinding gear 306 rotatably located on the side of the first rotating rod 305 away from the first adjusting shaft 304, a first driving device 307 for driving the grinding gear 306 to rotate, a second adjusting shaft 308 and a third adjusting shaft 307 located on the top surface of the machine base 301. Shaft 309, first synchronizing gear 310 rotatably disposed outside the second adjusting shaft 308 and meshing with external gear 303, second rotating rod 311 fixedly disposed on the top of the second adjusting shaft 308, first gear shaft 313 rotatably disposed on the side of the second rotating rod 311 away from the second adjusting shaft 308, first wheel 314 disposed outside the top of the first gear shaft 313, cleaning sponge ring 315 disposed outside the first wheel 314, second synchronizing gear 316 disposed outside the third adjusting shaft 309 and meshing with external gear 303, fixedly disposed on the... The third rotating rod 317 at the top of the third adjusting shaft 309, the second gear shaft 318 rotatably disposed on the side of the third rotating rod 317 away from the third adjusting shaft 309, the fourth rotating rod 319 fixedly disposed at the top of the third rotating rod 317, the adjusting nut 320 screwed onto the third rotating rod 317, the first synchronous pulley 321 disposed on the fourth rotating rod 319 and connected to the second gear shaft 318, the second synchronous pulley 322 disposed on the fourth rotating rod 319 and located opposite to the first synchronous pulley 321, and the slidably disposed on the fourth rotating rod 319. The slide block 323, the third synchronous wheel 324 rotatably disposed on both sides of the end of the slide block 323, the fourth synchronous wheel 325 disposed in the middle of the slide block 323, the grinding wheel 326 disposed in the middle of the fourth synchronous wheel 325, the spring 327 disposed between the slide block 323 and the fourth rotating rod 319, and the second driving device (not marked in the figure) for driving the external gear 303 to rotate. The first synchronous wheel 321, the second synchronous wheel 322, the third synchronous wheel 324, and the fourth synchronous wheel 325 are connected to the outer side of the belt 328.

[0055] The first gear shaft 313 meshes with the first synchronous gear 310, and the second gear shaft 318 meshes with the second synchronous gear 316. The first drive device 307 includes a first drive gear 329 rotatably disposed in the middle of the first adjusting shaft 304, a drive gear shaft 330 disposed at the bottom of the grinding gear 306, a second drive gear 331 disposed above the machine base 301 and meshing with the first drive gear 329, and a first motor 332 disposed on the top surface of the machine base 301 and used to drive the second drive gear 331 to rotate. The first drive gear 329 and the second drive gear 331 mesh with each other.

[0056] The first adjusting shaft 304 has a linkage rod 342 at its bottom, which is parallel to the first rotating rod 305. The first adjusting shaft 304 has a drive helical gear 333 fixed at its bottom. The second adjusting shaft 308 has a first V-shaped rod 334 fixed at its bottom. The third adjusting shaft 309 has a second V-shaped rod 335 fixed at its bottom. The first V-shaped rod 334 includes a fifth rotating rod 336 parallel to the second rotating rod 311 and a sixth rotating rod 337 at a 120° angle to the fifth rotating rod 336. The second V-shaped rod 335 includes a seventh rotating rod 338 parallel to the third rotating rod 317 and an eighth rotating rod 339 at a 120° angle to the seventh rotating rod 338. A first connecting rod 340 is rotatably connected between the sixth rotating rod 337 and the linkage rod 342. A second connecting rod 341 is provided between the fifth rotating rod 336 and the eighth rotating rod 339.

[0057] In use, first place the timing pulley of the computerized flat knitting machine into the central hole 302 in the middle of the external gear 303, and then fix the timing pulley. The first motor 332 in the first drive device 307 drives the drive gear shaft 330 to rotate through the second drive gear 331 and the first drive gear 329. The drive gear shaft 330 drives the top grinding gear 306 to rotate. The second drive device drives the external gear 303 to rotate. The second drive device can be referenced. Figure 9 The motor and synchronous belt pulley mechanism at the bottom of the external gear 303 have the same rotational speed as the grinding gear 306. The external gear 303 meshes with the polymer composite material gear ring 2 of the synchronous belt pulley of the computer flat knitting machine. Since the hardness of the grinding gear 306 is greater than that of the polymer composite material gear ring 2, the rough surface or convex part of the newly made polymer composite material gear ring 2 will shrink or be ground off by the grinding gear 306 after contacting it, thereby improving the accuracy of the polymer composite material gear ring 2 during use.

[0058] Then, the external gear 303 will drive the second synchronous gear 316 to rotate. The second synchronous gear 316 drives the top first synchronous pulley 321 to rotate via the second gear shaft 318. Through the belt 328, the belt will synchronously drive the second synchronous pulley 322, the third synchronous pulley 324, and the fourth synchronous pulley 325 to rotate. The rotation of the fourth synchronous pulley 325 will drive the bottom grinding wheel 326 to rotate. The grinding wheel 326 will contact the polymer composite material tooth ring 2 of the computer flat knitting machine's synchronous belt pulley, polishing and grinding the polymer composite material tooth ring 2 of the computer flat knitting machine's synchronous belt pulley. Since the polymer composite material tooth ring 2 has concave and convex tooth surfaces, the grinding wheel 326 and the convex tooth surface... When in contact, slider 323 will move outward. When in contact with the concave tooth surface, slider 323 and grinding wheel 326 will move and remain in contact with the outer side of polymer composite tooth ring 2 due to the influence of spring 327. The first synchronous wheel 321, the second synchronous wheel 322 and the third synchronous wheel 324 are parallel wheels. When the third synchronous wheel 324 and the fourth synchronous wheel 325 move, the tension of belt 328 remains unchanged, which will keep the first synchronous wheel 321, the second synchronous wheel 322, the third synchronous wheel 324 and the fourth synchronous wheel 325 rotating synchronously. The grinding wheel 326 can be driven to rotate in contact with the polymer composite tooth ring 2 through the external gear 303.

[0059] At the same time, the external gear 303 drives the first gear shaft 313 to rotate through the first synchronous gear 310. The first gear shaft 313 drives the first wheel 314 and the cleaning sponge ring 315 at the top to rotate. Due to the speed change through the first gear shaft 313, the cleaning sponge ring 315 rubs against the polymer composite material tooth ring 2 of the computer flat knitting machine synchronous belt pulley during rotation, which can remove the shavings generated by the grinding gear 306 contacting the polymer composite material tooth ring 2 and the iron powder from the grinding wheel 326.

[0060] The top surface of the machine base 301 is provided with a third driving device 312 for driving the active helical gear 333 to rotate. The third driving device 312 drives the active helical gear 333 to rotate, and the active helical gear 333 drives the top first rotating rod 305 and the linkage rod 342 to rotate. The grinding gear 306 rotates away from the position of the central hole 302.

[0061] The rotation of the linkage rod 342 drives the sixth rotating rod 337 to rotate via the first connecting rod 340. The sixth rotating rod 337 drives the second rotating rod 311 and the fifth rotating rod 336 at the top of the second adjusting shaft 308 to rotate. The cleaning sponge ring 315 will move away from the position of the central hole 302. Then, the fifth rotating rod 336 drives the eighth rotating rod 339 to rotate via the second connecting rod 341. The eighth rotating rod 339 drives the third rotating rod 317 and the sixth rotating rod 337 at the top via the third adjusting shaft 309 to rotate. The grinding wheel 326 at the top of the third rotating rod 317 will move away from the position of the central hole 302. The tightness of the first wheel 314, the grinding wheel 326, the grinding gear 306 and the synchronous belt pulley of the computer flat knitting machine can be adjusted. After processing, the synchronous belt pulley of the computer flat knitting machine can be easily removed.

[0062] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0063] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0064] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0065] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0066] Although the invention has been specifically shown and described in conjunction with preferred embodiments, those skilled in the art should understand that various changes in form and detail may be made to the invention without departing from the spirit and scope of the invention as defined in the appended claims, all of which shall be within the scope of protection of the invention.

Claims

1. A manufacturing process for synchronous belt pulleys on a computerized flat knitting machine, characterized in that, Includes the following steps: The first step is to heat-treat the metal hub and then remove it. Then, knurling and / or dovetail grooves are machined on the outer edge surface of the metal hub for bonding with the polymer composite material melt in the fifth step as a mechanical interlocking structure. The second step is to chemically clean and degrease the metal wheel hub, and then coat the surface of the mechanical interlocking structure with a layer of silane coupling agent to form a chemical bonding interface. The third step is to place the metal wheel hub described in the second step in an oven and preheat it to 180°C to 200°C. The fourth step involves selecting a polymer composite material with polyetheretherketone as the matrix and containing 20% ​​to 40% carbon fiber, and drying it at a temperature of 150°C to 160°C for at least 4 hours to reduce the moisture content of the polymer composite material to below 0.02%. Fifth step: Place the preheated metal wheel hub from the third step into the injection mold as an insert, and control the temperature of the injection mold at 180°C to 200°C. The polymer composite material is heated to 370°C to 410°C to form a polymer composite material melt. The polymer composite material melt is injected into the cavity inside the injection mold, so that the polymer composite material melt covers the mechanical interlocking structure on the outer edge surface of the metal wheel hub. The sixth step involves holding the molten polymer composite material injected into the injection mold under pressure and cooling at a temperature of 180°C to 200°C for 2 to 4 hours to form a polymer composite toothed ring on the outside of the metal hub. After that, it is slowly cooled to room temperature to obtain the synchronous belt pulley of the computer flat knitting machine, which is then removed from the injection mold.

2. The manufacturing process for a synchronous belt pulley on a computerized flat knitting machine according to claim 1, characterized in that: In the third step, the metal wheel hub is placed in an oven for preheating for no less than 30 minutes.

3. The manufacturing process for a synchronous belt pulley on a computerized flat knitting machine according to claim 1, characterized in that: In the fifth step, the injection pressure of the polymer composite melt injected into the injection mold is between 80 MPa and 150 MPa.

4. The manufacturing process for a synchronous belt pulley on a computerized flat knitting machine according to claim 1, characterized in that: In the sixth step, the removed computer flat knitting machine synchronous pulley is then polished by a grinding device; The grinding device includes a machine base (301), an external gear (303) located in the middle of the machine base (301), a central hole (302) located in the middle of the external gear (303), a first adjusting shaft (304) located on the top surface of the machine base (301), a first rotating rod (305) fixed on the top of the first adjusting shaft (304), a grinding gear (306) located on the side of the first rotating rod (305) away from the first adjusting shaft (304), and a first driving device (307) for driving the grinding gear (306) to rotate.

5. The manufacturing process for a synchronous belt pulley on a computerized flat knitting machine according to claim 4, characterized in that: The first drive device (307) includes a first drive gear (329) rotatably disposed in the middle of the first adjustment shaft (304), a drive gear shaft (330) disposed at the bottom of the grinding gear (306), a second drive gear (331) disposed above the machine base (301) and meshing with the first drive gear (329), and a first motor (332) disposed on the top surface of the machine base (301) and used to drive the second drive gear (331) to rotate.

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