Knife sharpener for machining medical electrotome and machining method of knife sharpener

Abstract

The tool sharpener comprises a workbench, a rack, a feeding device, a rotating mechanism, a clamping device and a grinding mechanism, the feeding device comprises an X-axis driving mechanism, a Y-axis driving mechanism and a Z-axis driving mechanism, the Y-axis driving mechanism is arranged at the upper end of the rack, the X-axis driving mechanism is arranged on the side wall of the rack, and the Z-axis driving mechanism is arranged on the side wall of the rack. The Y-axis driving mechanism drives the Z-axis driving mechanism to move up and down, the rotating mechanism is arranged at the driving end of the X-axis driving mechanism, the clamping mechanism is arranged at the rotating end of the rotating mechanism, the X-axis driving mechanism drives the rotating mechanism and the clamping device to horizontally move left and right, the clamping mechanism clamps materials, and the rotating mechanism drives the clamping mechanism and the materials to rotate. The grinding mechanism is located on one side of the clamping mechanism. Through three-axis linkage and adjustment of the rotating mechanism, accurate positioning and continuous machining of materials are achieved, manual intervention is reduced, double-blade-face synchronous grinding and cutting off can be completed after a single bar is clamped at a time, two finished tool bits are obtained, and the machining efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the field of medical electric knife processing technology equipment, and specifically to a grinding machine for processing medical electric knives and its processing method. Background Art

[0002] At present, the grinding equipment for medical electric knives is mainly divided into two categories: manual type and automated type. Manual grinding machines rely on operators to manually fix materials using clamping devices and make the surface of the materials to be ground contact the grinding wheel manually. Its working efficiency is low, the output is limited, and the labor cost is high. Some general-purpose grinding equipment is not designed for the special needs of medical electric knives, so there may be applicability problems when grinding electric knife blades. During the grinding process, the angle and sharpness of the electric knife blade must be precisely controlled within a very small tolerance range. However, most existing grinding machines use the hard friction method between the grinding wheel and the material, and the vibration generated during grinding will significantly affect the accuracy of the electric knife. It can be understood that the existing grinding equipment for medical electric knives mainly has the following problems: Low production efficiency: The automation level is insufficient, and the material positioning mainly relies on manual operation, resulting in unstable grinding wheel wear. It is necessary to manually adjust the grinding compensation amount frequently. Excessive human intervention greatly increases the production time. There are defects in the processing method. During the hard friction process between the material and the grinding wheel, a large amount of heat energy will be generated, which not only causes thermal damage to the material but also reduces the cutting force of the grinding wheel, thereby affecting the production efficiency.

[0003] Uncertainty of processing accuracy: Manual operation depends on the operator's skill level and experience, which may lead to inexperience and inaccuracy during the operation, thereby affecting the processing accuracy. In addition, the vibration generated during the grinding process by the hard friction method between the grinding wheel and the material will also significantly affect the processing accuracy of the electric knife. Summary of the Invention

[0004] The purpose of the present invention is to solve the above technical problems, and thus provide a grinding machine for processing medical electric knives and its processing method; To solve the above technical problems, the present invention provides the following technical solutions: An object of the present invention is to provide a grinding machine for processing medical electric knives, including a workbench, a frame, a feeding device, a rotating mechanism, a clamping device, and a grinding mechanism. The frame and the grinding mechanism are both arranged on the workbench; The feeding device includes an X-axis driving mechanism, a Y-axis driving mechanism, and a Z-axis driving mechanism. The Z-axis driving mechanism is arranged at the lower end of the frame. The Z-axis driving mechanism is used to drive the frame to move back and forth. The Y-axis driving mechanism is arranged at the upper end of the frame. The X-axis driving mechanism is arranged on the side wall of the frame. The Y-axis driving mechanism is used to drive the Z-axis driving mechanism to move up and down along the side wall of the frame. The rotating mechanism is on the driving end of the X-axis driving mechanism. The clamping mechanism is arranged on the rotating end of the rotating mechanism. The X-axis driving mechanism is used to drive the rotating mechanism and the clamping device to move left and right in the horizontal direction. The clamping mechanism is used to clamp the material. The rotating mechanism is used to drive the clamping mechanism to rotate, thereby driving the clamped material to rotate; The grinding mechanism is arranged on one side of the clamping mechanism. The grinding mechanism is used to grind the material on the clamping mechanism.

[0005] Optionally, the Y-axis driving mechanism includes a first driving motor, a screw rod, and a fixing frame. The first driving motor is arranged at the upper end of the frame. The upper end of the screw rod is connected to the output shaft of the driving motor. The fixing frame is arranged on the screw rod. When the first driving motor rotates, it drives the screw rod to rotate, and further drives the fixing frame to move up and down along the side wall of the screw rod. The X-axis driving mechanism is arranged on the side wall of the fixing frame; The X-axis driving mechanism includes a second driving motor, a mounting frame, and a fixing plate. The mounting frame is fixedly arranged on the fixing frame. The second driving motor is arranged on one side wall of the mounting frame. The fixing plate is connected to the output shaft of the second driving motor. The second driving motor drives the fixing plate to move left and right in the horizontal direction. The rotating mechanism and the clamping device are both arranged on the fixing plate; The rotating mechanism includes a rotating motor. The clamping device is connected to the output shaft of the rotating motor. The rotating mechanism is used to drive the clamping mechanism to rotate at any angle; The clamping mechanism includes a clamping cylinder, a clamping arm, and a clamping frame. The clamping frame is connected to the output shaft of the rotating motor. The clamping cylinder is arranged on the side wall of the clamping frame. The output shaft of the clamping cylinder is connected to the clamping arm. The clamping cylinder is used to control the opening and closing of the clamping arm, so as to clamp and release the material; The Z-axis driving mechanism includes a third driving motor. The third driving motor is connected to the side wall of the frame. The third driving motor is used to drive the whole frame to move back and forth.

[0006] Optionally, a material positioning fixture is provided on the fixed plate. Positioning blocks are provided on both the left and right sides of the upper end of the material positioning fixture. Through holes for the ends of the material to pass through are formed in the positioning blocks. The material is clamped and fixed by the clamping arms through the through holes in the positioning blocks. A limiting surface is formed between the two positioning blocks. The limiting surface is used to limit the placement position of the material and provide necessary support functions to prevent the material from bending and deforming during the processing.

[0007] Optionally, a cooling system is further provided on the fixed plate. The cooling system includes a cooling pipe and a nozzle. The cooling pipe is fixed to the clamping frame by magnetic adsorption. The water outlet of the cooling pipe is connected to the nozzle. A water storage tank is provided on the workbench. The cooling pipe is connected to the pump in the water storage tank through a quick connector. It is ensured that during the operation of the machine, the cooling water in the water storage tank is continuously transported to the processing area by the pump, effectively absorbing the heat generated during the processing, preventing the material from being overheated and burned, and preventing the grinding wheel from reducing its cutting efficiency due to excessive temperature. At the same time, the cooling water will flow back into the water storage tank to form a closed circulating cooling system.

[0008] Optionally, a spring assembly is provided on the side wall of the fixed frame. The lower end of the spring assembly is connected to the side wall of the fixed frame, and the upper end of the spring assembly is connected to the side wall of the mounting frame. The spring assembly is used to drive the X-axis drive mechanism to achieve flexible contact between the material and the grinding wheel during the up and down movement, reduce the frictional impact force, promote the uniform distribution of the frictional force, help obtain a smoother surface quality, reduce the dimensional and shape deviations caused by vibration, and thus improve the processing accuracy. A PLC system and a displacement sensing device are provided on the workbench. The PLC system is electrically connected to the displacement sensing device. The displacement sensing device is used to monitor the grinding depth of the material in real time and feedback this data to the PLC system, so as to automatically adjust the processing depth to achieve precise control. The PLC system includes counter A and counter B. Counter A is used to record the current number of processed surfaces, which is incremented by 1 after each surface is ground. When it reaches 6, it indicates that the processing of two surfaces and four edges is all completed. Counter B is used to record the number of rotations of the self-rotating shaft, which is incremented by 1 after each 180° rotation of the self-rotating shaft to assist in judging whether it is necessary to switch the processed surface.

[0009] Optionally, a water baffle is provided on the fixed plate. The water baffle is used to block the cooling water from splashing onto the clamping cylinder during the spraying process of the cooling pipe to ensure that its normal operation is not affected.

[0010] Another object of the present invention is to provide a processing method for a grinding machine for processing medical scalpels, including the following steps: S1. Material clamping: Place the bar stock to be processed between the positioning blocks of the material positioning fixture, and control the clamping arm to close through the clamping cylinder to clamp and fix the bar stock; S2. Grinding process: Start the X-axis drive mechanism, Y-axis drive mechanism, and Z-axis drive mechanism to make the bar stock contact the grinding wheel of the grinding mechanism for grinding. Among them, the X-axis drive mechanism performs reciprocating motion in the horizontal direction, and the displacement is determined by the edge length. The Y-axis drive mechanism performs reciprocating motion from one end to the other according to the width of the grinding wheel, and the Z-axis drive mechanism moves back and forth according to the processing requirements; the X-axis drive mechanism performs reciprocating motion within the edge width range, uses the arc surface of the grinding machine to grind the arc surface of the edge, and cuts from the middle of the arc surface after processing to obtain two tool tips; the reciprocating direction of the Y-axis drive mechanism, and the displacement distance is an integer multiple of the width of the grinding wheel. Such movement can make the grinding wheel consume evenly each time; S3. Processing inspection and counting: When the preset number of grinding surface movements is reached, the feeding system transfers the bar stock to the displacement sensing device to inspect the processed parts. If it is not within the inspection range, adjust the processing depth for rework. If it is within the inspection range, increment counter A and counter B by 1; S4. Self-rotating shaft rotation determination and operation: Determine counter B. If the value of counter B is 1, rotate the self-rotating shaft by 180°, and perform the processing program again; S5. Processing cycle determination and operation: After processing is completed, determine counter A again. If it is not within the inspection range, perform rework. If it is within the range, increment counter A and counter B by 1, and then determine counter B. If the value of counter B is 2, jump to the step of determining the value of counter A. If the value of counter A is 2, the self-rotating shaft performs the corresponding operation. Thereafter, continuously determine counter A and run the corresponding program; S6. Processing completion and reset: Until the value of counter A reaches 6, that is, after the two surfaces and four edges of the material are ground, the cooling system stops operating, the grinding wheel stops rotating, and each axis returns to the mechanical origin set by the limit switch; S7. Counter reset and material removal: After reaching the origin, reset counter A and counter B, release the clamping cylinder, and the operator removes the processed bar stock and prepares to process the next bar stock.

[0011] In summary, the present invention has the following beneficial effects: Through the coordinated control of the X, Y, and Z-axis drive mechanisms and combined with the arbitrary angle adjustment of the rotating mechanism, the precise positioning and continuous processing of materials in three-dimensional space are achieved. The X-axis reciprocates horizontally to complete the cutting edge length processing, the Y-axis moves uniformly in coordination with the width of the grinding wheel, and the Z-axis adapts to different processing requirements, significantly reducing manual intervention and achieving efficient continuous operation. By optimizing the material positioning fixture and the processing path, a single bar stock can complete the synchronous grinding of both cutting edges after one clamping. Finally, after cutting from the middle arc surface, two finished tool heads can be obtained simultaneously, doubling the output per single processing and significantly reducing the time for repeated clamping and material replacement. Description of the Drawings

[0012] Figure 1 This is the front view of the structure of the present invention.

[0013] Figure 2 This is the side view of the structure of the present invention.

[0014] Figure 3 This is the enlarged view of the structure at the fixing plate of the present invention.

[0015] Figure 4 This is the enlarged front view of the structure at the material positioning fixture of the present invention.

[0016] Figure 5 This is the enlarged side view of the structure at the material positioning fixture of the present invention.

[0017] Figure 6 This is the material processing forming diagram of the present invention.

[0018] Figure 7 This is the product processing forming diagram of the present invention.

[0019] Explanation of the reference numerals in the drawings: 1 - workbench, 2 - frame, 3 - first drive motor, 4 - screw rod, 5 - fixing frame, 6 - second drive motor, 7 - mounting frame, 8 - fixing plate, 9 - rotating motor, 10 - clamping cylinder, 11 - clamping arm, 12 - clamping frame, 13 - third drive motor, 14 - material positioning fixture, 15 - positioning block, 16 - through hole, 17 - limiting surface, 18 - cooling pipe, 19 - nozzle, 20 - water storage tank, 21 - spring assembly, 22 - displacement sensing device, 23 - water baffle, 24 - grinding wheel. Detailed Embodiments

[0020] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0021] Embodiment: As Figures 1-7 shown, an object of the present invention is to provide a grinding machine for processing medical electrocautery knives, including a workbench 1, a frame 2, a feeding device, a rotating mechanism, a clamping device, and a grinding mechanism. The frame 2 and the grinding mechanism are both arranged on the workbench 1; The feeding device includes an X-axis driving mechanism, a Y-axis driving mechanism, and a Z-axis driving mechanism. The Z-axis driving mechanism is arranged at the lower end of the frame 2, and the Z-axis driving mechanism is used to drive the frame 2 to move back and forth. The Y-axis driving mechanism is arranged at the upper end of the frame 2, and the X-axis driving mechanism is arranged on the side wall of the frame 2. The Y-axis driving mechanism is used to drive the Z-axis driving mechanism to move up and down along the side wall of the frame 2. The rotating mechanism is on the driving end of the X-axis driving mechanism, and the clamping mechanism is arranged on the rotating end of the rotating mechanism. The X-axis driving mechanism is used to drive the rotating mechanism and the clamping device to move left and right in the horizontal direction. The clamping mechanism is used to clamp the material, and the rotating mechanism is used to drive the clamping mechanism to rotate, thereby driving the clamped material to rotate; The grinding mechanism is arranged on one side of the clamping mechanism, and the grinding mechanism is used to grind the material on the clamping mechanism.

[0022] In this application, the grinding mechanism uses a grinding wheel 24.

[0023] With the above settings, this application integrates the workbench 1, the frame 2, the feeding device, the rotating mechanism, the clamping device, and the grinding mechanism. Each mechanism works together to realize the automated process of medical electrocautery knife processing, reduce manual intervention, and improve production efficiency.

[0024] Through the X-axis driving mechanism, the Y-axis driving mechanism, and the Z-axis driving mechanism, precise positioning and movement of the material in three-dimensional space are achieved. Combined with the rotating mechanism driving the clamping mechanism to rotate, the material can cooperate with the grinding mechanism at different angles and positions to meet the processing requirements of the complex shape and precision of medical electrocautery knives.

[0025] The grinding mechanism is arranged on one side of the clamping mechanism, which can quickly grind the material on the clamping mechanism and ensure the continuity and high efficiency of processing.

[0026] Optionally, the Y-axis driving mechanism includes a first driving motor 3, a screw rod 4, and a fixing frame 5. The first driving motor 3 is arranged at the upper end of the frame 2. The upper end of the screw rod 4 is connected to the output shaft of the driving motor. The fixing frame 5 is arranged on the screw rod 4. The first driving motor 3 rotates, driving the screw rod 4 to rotate, and further driving the fixing frame 5 to move up and down along the side wall of the screw rod 4. The X-axis driving mechanism is arranged on the side wall of the fixing frame 5; The X-axis driving mechanism includes a second driving motor 6, a mounting frame 7, and a fixing plate 8. The mounting frame 7 is fixedly arranged on the fixing frame 5. The second driving motor 6 is arranged on one side wall of the mounting frame 7. The fixing plate 8 is connected to the output shaft of the second driving motor 6. The second driving motor 6 drives the fixing plate 8 to move left and right in the horizontal direction. The rotating mechanism and the clamping device are both arranged on the fixing plate 8; The rotating mechanism includes a rotating motor 9. The clamping device is connected to the output shaft of the rotating motor 9. The rotating mechanism is used to drive the clamping mechanism to rotate at any angle; The clamping mechanism includes a clamping cylinder 10, clamping arms 11, and a clamping frame 12. The clamping frame 12 is connected to the output shaft of the rotating motor 9. The clamping cylinder 10 is arranged on the side wall of the clamping frame 12. The output shaft of the clamping cylinder 10 is connected to the clamping arms 11. The clamping cylinder 10 is used to control the opening and closing of the clamping arms 11, so as to clamp and release the material; The Z-axis driving mechanism includes a third driving motor 13. The third driving motor 13 is connected to the side wall of the machine frame 2. The third driving motor 13 is used to drive the whole machine frame 2 to move back and forth.

[0027] The first driving motor 3 drives the screw rod 4 to rotate, so that the fixing frame 5 moves up and down along the side wall of the screw rod 4, realizing the precise movement of the clamping mechanism and the rotating mechanism in the Y-axis direction. Cooperating with the X-axis driving mechanism and the Z-axis driving mechanism, the position of the material can be flexibly adjusted to ensure the precise contact between the material and the grinding wheel 24, improving the processing accuracy.

[0028] The second driving motor 6 drives the fixing plate 8 to move left and right in the horizontal direction, realizing the reciprocating movement of the material in the X-axis direction. Cooperating with the Y-axis driving mechanism and the Z-axis driving mechanism, complex-shaped grinding processing can be completed. At the same time, it provides a stable installation foundation for the rotating mechanism and the clamping device.

[0029] The rotating motor 9 drives the clamping mechanism to rotate at any angle, meeting the processing requirements of different angles of medical electrocautery knives, and improving the flexibility and adaptability of processing.

[0030] The clamping cylinder 10 controls the opening and closing of the clamping arms 11, realizing the rapid clamping and releasing of the material. The operation is simple, the clamping is stable and reliable, ensuring that the material will not loosen during the processing, and guaranteeing the processing quality.

[0031] The third driving motor 13 drives the whole machine frame 2 to move back and forth, which can adjust the distance between the material and the grinding wheel 24, meet the requirements of different processing stages, and improve the versatility of the equipment.

[0032] Optionally, a material positioning fixture 14 is provided on the fixed plate 8. Positioning blocks 15 are provided on both the left and right sides of the upper end of the material positioning fixture 14. Through holes 16 for the ends of the material to pass through are formed in the positioning blocks 15. The material is clamped and fixed by the clamping arms 11 through the through holes 16 in the positioning blocks 15. A limiting surface 17 is formed between the two groups of positioning blocks 15. The limiting surface 17 is used to limit the placement position of the material and provide necessary support functions to prevent the material from bending and deforming during the processing.

[0033] Through holes 16 are formed in the positioning blocks 15 on the material positioning fixture 14. The material is clamped and fixed by the clamping arms 11 through the through holes 16. A limiting surface 17 is formed between the two groups of positioning blocks 15, which can accurately limit the placement position of the material, provide necessary support functions, prevent the material from bending and deforming during the processing, and ensure the processing accuracy.

[0034] Optionally, a cooling system is also provided on the fixed plate 8. The cooling system includes a cooling pipe 18 and a nozzle 19. The cooling pipe 18 is fixed on the clamping frame 12 by magnetic adsorption. The water outlet of the cooling pipe 18 is connected to the nozzle 19. A water storage tank 20 is provided on the workbench 1. The cooling pipe 18 is connected to the pump in the water storage tank 20 through a quick connector, ensuring that during the operation of the machine, the cooling water in the water storage tank 20 is continuously transported to the processing area by the pump, effectively absorbing the heat generated during the processing, preventing the material from being overheated and burned and the grinding wheel 24 from reducing its cutting efficiency due to excessive temperature. At the same time, the cooling water will flow back into the water storage tank 20 to form a closed circulating cooling system.

[0035] The cooling system continuously transports the cooling water to the processing area through the cooling pipe 18 and the nozzle 19, effectively absorbing the heat generated during the processing, preventing the material from being overheated and burned and the grinding wheel 24 from reducing its cutting efficiency due to excessive temperature. At the same time, the cooling water flows back into the water storage tank 20 to form a closed circulating cooling system, saving water resources and reducing production costs.

[0036] Optionally, a spring assembly 21 is provided on the side wall of the fixed frame 5. The lower end of the spring assembly 21 is connected to the side wall of the fixed frame 5, and the upper end of the spring assembly 21 is connected to the side wall of the mounting frame 7. The spring assembly 21 is used to drive the X-axis drive mechanism to achieve flexible contact between the material and the grinding wheel 24 during the up and down movement, reduce the frictional impact force, promote the uniform distribution of the frictional force, help obtain a smoother surface quality, reduce the dimensional and shape deviations caused by vibration, and thus improve the processing accuracy; A PLC system and a displacement sensing device 22 are provided on the workbench 1. The PLC system is electrically connected to the displacement sensing device 22. The displacement sensing device 22 is used to monitor the grinding depth of the material in real time and feedback the data to the PLC system, so as to automatically adjust the processing depth to achieve precise control. The PLC system includes a counter A and a counter B. The counter A is used to record the current number of processed surfaces, which is incremented by 1 after each surface is ground. When it reaches 6, it means that the processing of two surfaces and four cutting edges is completed. The counter B is used to record the number of rotations of the rotating shaft. It is incremented by 1 after each 180° rotation of the rotating shaft to assist in judging whether it is necessary to switch the processed surface.

[0037] The spring assembly 21 drives the X-axis drive mechanism to achieve flexible contact between the material and the grinding wheel 24 during the up and down movement, reducing the frictional impact force, promoting the uniform distribution of the frictional force, helping to obtain a smoother surface quality, and reducing the dimensional and shape deviations caused by vibration, thereby improving the processing accuracy.

[0038] The PLC system is electrically connected to the displacement sensing device 22. The displacement sensing device 22 monitors the grinding depth of the material in real time and feeds it back to the PLC system to automatically adjust the processing depth to achieve precise control. The counter A and the counter B respectively record the current number of processed surfaces and the number of rotations of the rotating shaft to assist in judging whether it is necessary to switch the processed surface, ensuring the accuracy and stability of the processing process.

[0039] Specifically, by way of example, the following takes the grinding process of a tool with two processed surfaces and four cutting edges as an example to explain in detail the working process of the workbench 1 and how the PLC system and the displacement sensing device 22 cooperate to achieve precise control and processing flow management: First, fix the tool to be processed on the workbench 1 to ensure that its rotating shaft can rotate stably, and the relative position between the material and the grinding device has been preliminarily calibrated through mechanical adjustment or a preset program.

[0040] Input the following parameters into the PLC system: The target grinding depth is 0.1 mm, the number of processing times for each surface is 3 times, and the rotation angle of the rotating shaft is fixed at 180°; Initialize the counters. Counter A = 0 (current number of processed surfaces), Counter B = 0 (number of rotations of the rotating shaft) First, process the first surface. Step 1: Start grinding The displacement sensing device 22 monitors the contact depth between the tool and the grinding device in real time and feeds the data back to the PLC system. The PLC system dynamically adjusts the feed rate of the grinding device according to the feedback data to ensure that the actual grinding depth is always equal to the target value of 0.1 mm.

[0041] Step 2: Complete a single grinding When the PLC system determines that the current grinding depth reaches the target value and remains stable, it records the completion of this grinding. The counter A remains unchanged at 0, indicating that the current surface has not been switched. The counter B is triggered to increment by 1, and B = 1, indicating that the rotating shaft has rotated once.

[0042] Step 3: Repeat grinding until the set number of times Repeat Step 1 and Step 2 until the counter B reaches 3, indicating that the current surface has been ground 3 times.

[0043] Secondly, switch to the processing of the second surface Step 1: Rotate the tool After the counter B reaches 3, the PLC system triggers the rotating shaft to rotate 180°, so that the tool switches to the second processing surface. The counter A increments by 1, A = 1, and the counter B is cleared, B = 0, preparing to start the processing of the new surface.

[0044] Step 2: Repeat the processing flow of the first surface According to the processing steps of the first surface, complete 3 grindings of the second surface. After each grinding, the counter B increments by 1 until B = 3, triggering the second rotation of the rotating shaft.

[0045] Secondly, judgment of processing completion When the counter A reaches 2, it indicates that the processing of all four cutting edges of the two processing surfaces has been completed. The PLC system sends a processing completion signal, stops the grinding device, and locks the rotating shaft.

[0046] Furthermore, handling of special situations If the machine stops due to a fault, the PLC system can save the current counter status, such as A = 1, B = 2. After resuming production, continue processing from the breakpoint. If it is necessary to change the target depth or the number of processing times, the parameters can be directly modified in the PLC system, and the system will automatically execute according to the new parameters.

[0047] Through the counters A and B of the PLC system, combined with the real-time feedback of the displacement sensing device 22, the system realizes automatic depth control, ensuring that the grinding depth is accurate to 0.1 mm each time, and management of the number of surfaces and cutting edges. Through the logical relationship between the counters A and B, it accurately judges when to switch the processing surface and whether all processing is completed. Fault tolerance and flexibility support resuming processing from the breakpoint and dynamic adjustment of parameters, improving production efficiency and reliability.

[0048] Optionally, a water baffle 23 is provided on the fixing plate 8. The water baffle 23 is used to prevent the cooling water from splashing onto the clamping cylinder 10 during the spraying process from the cooling pipe 18, so as to ensure that its normal operation is not affected.

[0049] The water baffle 23 blocks the cooling water from splashing onto the clamping cylinder 10 during the spraying process, ensuring the normal operation of the clamping cylinder 10 without being affected, extending the service life of the equipment, and reducing the equipment maintenance cost.

[0050] Another object of the present invention is to provide a processing method for a grinding machine for processing medical electrocautery knives, comprising the following steps: S1. Material clamping: Place the workpiece bar to be processed between the positioning blocks 15 of the material positioning fixture 14, and control the clamping arm 11 to close through the clamping cylinder 10 to clamp and fix the bar. S2. Grinding processing: Start the X-axis drive mechanism, Y-axis drive mechanism, and Z-axis drive mechanism to make the bar contact the grinding wheel 24 of the grinding mechanism for grinding processing. Among them, the X-axis drive mechanism performs reciprocating motion in the horizontal direction, and the displacement amount is determined by the edge length. The Y-axis drive mechanism performs reciprocating motion from one end to the other end according to the width of the grinding wheel 24, and the Z-axis drive mechanism moves back and forth according to the processing requirements; the X-axis drive mechanism performs reciprocating motion within the edge width range, and uses the arc surface of the grinding machine to grind the arc surface of the edge. After processing, cut it off from the middle of the arc surface to obtain two knife heads; the reciprocating direction of the Y-axis drive mechanism, and the displacement distance is an integer multiple of the width of the grinding wheel 24. Such movement can make the grinding wheel 24 be evenly consumed each time. S3. Processing detection and counting: When the preset number of grinding surface movement times is reached, the feeding system transfers the bar to the displacement sensing device 22 to detect the processed parts. If it is not within the detection range, adjust the processing depth for rework. If it is within the detection range, the counter A and counter B are incremented by 1. S4. Self-rotating shaft rotation determination and operation: Determine the counter B. If the value of the counter B is 1, the self-rotating shaft rotates 180°, and the processing program is performed again. S5. Processing cycle determination and operation: After processing is completed, determine the counter A again. If it is not within the detection range, perform rework. If it is within the range, the counter A and counter B are incremented by 1. Then determine the counter B. If the value of the counter B is 2, jump to the step of determining the value of the counter A. If the value of the counter A is 2, the self-rotating shaft performs the corresponding operation. After that, continuously determine the counter A and run the corresponding program. S6. Processing completion and reset: Until the value of the counter A is 6, that is, after the two surfaces and four edges of the material are ground, the cooling system stops operating, the grinding wheel 24 stops rotating, and each axis returns to the mechanical origin set by the limit switch. S7. Counter clearing and material removal: After reaching the origin, the counter A and counter B are cleared, the clamping cylinder 10 is loosened, the operator takes out the processed bar, and prepares to process the next bar.

[0051] The processing method details the complete automated processing flow from material clamping, grinding, processing inspection and counting, self-rotating shaft rotation determination and operation, processing cycle determination and operation, processing completion and reset to counter clearing and material removal, reducing manual intervention and improving production efficiency and processing accuracy.

[0052] During the grinding process, with the specific movement modes of the X-axis drive mechanism and the Y-axis drive mechanism, the X-axis reciprocates within the edge width range to grind the arc surface of the edge, and the displacement distance of the Y-axis in the reciprocating direction is an integer multiple of the width of the grinding wheel 24, enabling the grinding wheel 24 to be evenly consumed in each processing, ensuring the consistency of processing quality. At the same time, through the cooperation of the displacement sensing device 22 and the counter, the processing process is monitored in real time and precisely controlled to ensure that the processing accuracy meets the requirements.

[0053] When the processed part is not within the detection range, the processing depth can be automatically adjusted for rework, avoiding product scrapping caused by processing accuracy problems and reducing production risks and costs.

[0054] This application realizes the precise positioning and continuous processing of materials in three-dimensional space through the coordinated control of the X, Y, and Z-axis drive mechanisms and the arbitrary angle adjustment of the rotating mechanism. The X-axis performs horizontal reciprocating motion to complete the edge length processing, the Y-axis makes uniform displacement in coordination with the width of the grinding wheel 24, and the Z-axis adapts to different processing requirements, significantly reducing manual intervention and achieving efficient continuous operation. By optimizing the material positioning fixture 14 and the processing path, a single bar stock can complete the synchronous grinding of both blade surfaces after one clamping. Finally, after cutting from the middle arc surface, two finished tool heads can be obtained simultaneously, doubling the output per single processing and greatly reducing the time for repeated clamping and material replacement.

[0055] The material positioning fixture 14 ensures the strict alignment of the material axis with the plane of the grinding wheel 24 through the through-hole 16, positioning block 15, and limiting surface 17 structures, avoiding bending deformation. The spring assembly 21 provides a flexible contact mechanism, reducing the processing impact force, promoting uniform distribution of the frictional force, and improving the surface processing quality. Through the design of the symmetric positioning block 15 and the limiting surface 17, the symmetry and dimensional consistency of the two tool heads during synchronous processing are ensured, avoiding individual differences caused by separate processing and improving the product qualification rate.

[0056] The magnetic adsorption cooling system accurately delivers cooling water to the processing area through a closed cycle, quickly absorbing the grinding heat, avoiding material burning and performance degradation of the grinding wheel 24, and ensuring the stability of the processing process. The layout of the nozzles 19 adapts to the processing area of the double tool heads, and the cooling water evenly covers the grinding contact surfaces of the two tool heads, avoiding local overheating and ensuring that the processing quality of the double tool heads meets the standards synchronously.

[0057] By rotating 180° around the axis of rotation and using counter logic, continuous multi-sided processing of materials is achieved, adapting to the complex blade surface structure of medical electrosurgical knives, improving processing integrity. During a single processing cycle, by optimizing the path of the grinding wheel 24 and the cutting-off timing, seamless connection of the blade surface grinding and separation actions of the two tool heads is ensured, reducing the idle travel time, improving equipment utilization rate, fully automated processing reduces reliance on manpower, the synchronous forming setting of the two tool heads doubles the single-machine production capacity, and at the same time reduces material cutting losses, and the comprehensive operating cost is significantly optimized.

[0058] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A sharpening machine for processing medical electrocautery knives, characterized in that it includes a workbench, a frame, a feeding device, a rotating mechanism, a clamping device, and a grinding mechanism. The frame and the grinding mechanism are both arranged on the workbench; The feeding device includes an X-axis driving mechanism, a Y-axis driving mechanism, and a Z-axis driving mechanism. The Z-axis driving mechanism is arranged at the lower end of the frame. The Z-axis driving mechanism is used to drive the frame to move back and forth. The Y-axis driving mechanism is arranged at the upper end of the frame. The X-axis driving mechanism is arranged on the side wall of the frame. The Y-axis driving mechanism is used to drive the Z-axis driving mechanism to move up and down along the side wall of the frame. The rotating mechanism is on the driving end of the X-axis driving mechanism. The clamping mechanism is arranged on the rotating end of the rotating mechanism. The X-axis driving mechanism is used to drive the rotating mechanism and the clamping device to move left and right in the horizontal direction. The clamping mechanism is used to clamp the material. The rotating mechanism is used to drive the clamping mechanism to rotate, thereby driving the clamped material to rotate; The grinding mechanism is arranged on one side of the clamping mechanism. The grinding mechanism is used to grind the material on the clamping mechanism.

2. The sharpening machine for processing medical electrocautery knives according to claim 1, characterized in that the Y-axis driving mechanism includes a first driving motor, a screw rod, and a fixing frame. The first driving motor is arranged at the upper end of the frame. The upper end of the screw rod is connected to the output shaft of the driving motor. The fixing frame is arranged on the screw rod. When the first driving motor rotates, it drives the screw rod to rotate, and then drives the fixing frame to move up and down along the side wall of the screw rod. The X-axis driving mechanism is arranged on the side wall of the fixing frame; the X-axis driving mechanism includes a second driving motor, a mounting frame, and a fixing plate. The mounting frame is fixedly arranged on the fixing frame. The second driving motor is arranged on one side wall of the mounting frame. The fixing plate is connected to the output shaft of the second driving motor. The second driving motor drives the fixing plate to move left and right in the horizontal direction. The rotating mechanism and the clamping device are both arranged on the fixing plate; the rotating mechanism includes a rotating motor. The clamping device is connected to the output shaft of the rotating motor. The rotating mechanism is used to drive the clamping mechanism to rotate at any angle; the clamping mechanism includes a clamping cylinder, a clamping arm, and a clamping frame. The clamping frame is connected to the output shaft of the rotating motor. The clamping cylinder is arranged on the side wall of the clamping frame. The output shaft of the clamping cylinder is connected to the clamping arm. The clamping cylinder is used to control the opening and closing of the clamping arm, so as to clamp and release the material; the Z-axis driving mechanism includes a third driving motor. The third driving motor is connected to the side wall of the frame. The third driving motor is used to drive the whole frame to move back and forth.

3. The sharpening machine for processing medical electrocautery knives according to claim 2, characterized in that A material positioning fixture is provided on the fixed plate. Positioning blocks are provided on the left and right sides of the upper end of the material positioning fixture. Through holes for the ends of the material to pass through are provided in the positioning blocks. The material is clamped and fixed by the clamping arms through the through holes in the positioning blocks. A limiting surface is formed between the two groups of positioning blocks. The limiting surface is used to limit the placement position of the material and provide necessary support functions to prevent the material from bending and deforming during the processing.

4. The grinding machine for processing medical electric scalpels according to claim 1, wherein A cooling system is further provided on the fixed plate. The cooling system includes a cooling pipe and a nozzle. The cooling pipe is fixed on the clamping frame by a magnetic adsorption method. The water outlet of the cooling pipe is connected with the nozzle. A water storage tank is arranged on the workbench. The cooling pipe is connected with the pump in the water storage tank through a quick connector, ensuring that during the operation of the machine, the cooling water in the water storage tank is continuously transported to the processing area by the pump, effectively absorbing the heat generated during the processing, preventing the material from being overheated and burned and the grinding wheel from reducing its cutting efficiency due to excessive temperature. At the same time, the cooling water will flow back into the water storage tank to form a closed circulating cooling system.

5. The grinding machine for processing medical electric scalpels according to claim 1, wherein A spring assembly is arranged on the side wall of the fixed frame. The lower end of the spring assembly is connected with the side wall of the fixed frame, and the upper end of the spring assembly is connected with the side wall of the mounting frame. The spring assembly is used to drive the X-axis driving mechanism to achieve flexible contact between the material and the grinding wheel during the up and down movement, reduce the friction impact force, promote the uniform distribution of the friction force, help to obtain a smoother surface quality, reduce the dimensional and shape deviations caused by vibration, and thus improve the processing accuracy. A PLC system and a displacement sensing device are arranged on the workbench. The PLC system is electrically connected with the displacement sensing device. The displacement sensing device is used to monitor the grinding depth of the material in real time and feed back the data to the PLC system, so as to automatically adjust the processing depth to achieve precise control. The PLC system includes a counter A and a counter B. The counter A is used to record the current number of processed surfaces, adding 1 after each surface is ground. When it reaches 6, it means that the processing of two surfaces and four edges is completed. The counter B is used to record the rotation times of the rotating shaft, adding 1 after each 180° rotation of the rotating shaft to assist in judging whether it is necessary to switch the processed surface.

6. The grinding machine for processing medical electric scalpels according to claim 4, wherein A water baffle is arranged on the fixed plate. The water baffle is used to block the cooling water from splashing onto the clamping cylinder during the spraying process of the cooling pipe to ensure the normal operation of the clamping cylinder is not affected.

7. A processing method for a grinding machine for processing medical electrosurgical knives according to any one of claims 1 to 6, characterized in that, Including the following steps: S1. Material clamping: Place the bar stock to be processed between the positioning blocks of the material positioning fixture, and control the clamping arms to close through the clamping cylinder to clamp and fix the bar stock. S2. Grinding process: Start the X-axis drive mechanism, Y-axis drive mechanism, and Z-axis drive mechanism to make the bar stock contact the grinding wheel of the grinding mechanism for grinding. Among them, the X-axis drive mechanism performs reciprocating motion in the horizontal direction, and the displacement is determined by the edge length. The Y-axis drive mechanism performs reciprocating motion from one end to the other according to the width of the grinding wheel, and the Z-axis drive mechanism moves back and forth according to the processing requirements. The X-axis drive mechanism performs reciprocating motion within the edge width range, and uses the arc surface of the knife grinder to grind the arc surface of the edge. After processing, cut from the middle of the arc surface to obtain two knife heads. The reciprocating direction of the Y-axis drive mechanism has a displacement distance that is an integer multiple of the width of the grinding wheel, so that each processing can evenly consume the grinding wheel. S3. Processing inspection and counting: When the preset number of grinding surface movements is reached, the feeding system transfers the bar stock to the displacement sensing device to inspect the processed parts. If it is not within the inspection range, adjust the processing depth for rework. If it is within the inspection range, increment counter A and counter B by 1. S4. Self-rotating shaft rotation determination and operation: Determine counter B. If the value of counter B is 1, rotate the self-rotating shaft by 180° and perform the processing program again. S5. Processing cycle determination and operation: After processing is completed, determine counter A again. If it is not within the inspection range, perform rework. If it is within the range, increment counter A and counter B by 1. Then determine counter B. If the value of counter B is 2, jump to the step of determining the value of counter A. If the value of counter A is 2, perform the corresponding operation on the self-rotating shaft. After that, continuously determine counter A and run the corresponding program. S6. Processing completion and reset: When the value of counter A reaches 6, that is, after the two surfaces and four edges of the material are ground, the cooling system stops operating, the grinding wheel stops rotating, and each axis returns to the mechanical origin set by the limit switch. S7. Counter reset and material removal: After reaching the origin, reset counter A and counter B, release the clamping cylinder, and the operator removes the processed bar stock and prepares to process the next bar stock.

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