Grinding forming system for blade

Abstract

The utility model belongs to the technical field of grinding machining, and particularly relates to a blade grinding forming system which comprises a grinding mechanism, a feeding mechanism and a control mechanism. The grinding mechanism comprises a grinding wheel and a first power mechanism, and the grinding wheel is assembled at the output end of the first power mechanism; the feeding mechanism comprises a grinding platform, a sliding platform and a second power mechanism, the grinding platform is used for arranging a blade to be ground, the grinding platform is assembled at the output end of the second power mechanism, and the grinding platform is in sliding fit with the sliding platform; the control mechanism comprises a displacement sensor, a force sensor and a controller. Compared with the prior art, the defect that the grinding forming effect of the blade cannot be obtained in time in the prior art is overcome; according to the scheme, key parameters in the grinding forming process are obtained by reasonably arranging a small number of sensors, and then an operator can rapidly and properly adjust the grinding forming process.

Description

Technical Field

[0001] This utility model belongs to the field of grinding technology, and specifically relates to a grinding and shaping system for cutting blades. Background Technology

[0002] The performance of a blade depends primarily on the material used. Typically, the blade portion of medical devices is made of medical-grade stainless steel, which offers high hardness, good wear resistance, and biocompatibility, such as the commonly used 316L stainless steel. This type of stainless steel can withstand complex environments, is not prone to rust or corrosion, and maintains sharp cutting performance, ensuring effective cutting during use.

[0003] First, starting with the selected stainless steel raw material, high-precision cutting equipment, such as a laser cutter, is used to cut the blade according to the pre-designed dimensions and shape. Laser cutting has the advantages of high precision, smooth cut edges, and a small heat-affected zone, ensuring that the blade edges are sharp and the shape is accurate, meeting the requirements of subsequent installation and use. For example, for blades with complex shapes and precise dimensional requirements, laser cutting can accurately complete the contour cutting, avoiding defects such as burrs and deformation.

[0004] After cutting, the blade surface needs to be ground and polished. By using abrasive paper of different grits and polishing wheels, minor imperfections and scratches on the blade surface are gradually removed, achieving an extremely high level of smoothness. This not only further enhances the blade's sharpness but also reduces burrs and other defects and problems during use, ensuring smooth and safe cutting. The grinding and polishing process requires strict control of process parameters, such as grinding pressure, rotation speed, and polishing time, to ensure that the surface quality of each blade meets a consistently high standard.

[0005] Therefore, a system capable of measuring and controlling the grinding and shaping effect of cutting tools is needed. Utility Model Content

[0006] The purpose of this utility model is to provide a blade grinding and forming system to solve at least one of the above problems, so as to overcome the shortcomings of the prior art in that it is impossible to obtain the blade grinding and forming effect in a timely manner. This solution achieves the acquisition of key parameters in the grinding and forming process by reasonably setting a small number of sensors, so that the operator can quickly make appropriate adjustments to the grinding and forming process.

[0007] The objective of this utility model is achieved through the following technical solution:

[0008] A blade grinding and shaping system includes a grinding mechanism, a feeding mechanism, and a control mechanism;

[0009] The grinding mechanism includes a grinding wheel and a first power mechanism, wherein the grinding wheel is assembled at the output end of the first power mechanism;

[0010] The feeding mechanism includes a grinding platform, a sliding platform, and a second power mechanism. The grinding platform is used to set the cutting tool to be ground. The grinding platform is mounted on the output end of the second power mechanism, and the grinding platform and the sliding platform are in sliding cooperation.

[0011] The control mechanism includes a displacement sensor, a force sensor, and a controller. The displacement sensor is mounted on the second power mechanism, and the force sensor is mounted on the grinding wheel. The displacement sensor and the force sensor are electrically connected to the controller.

[0012] Preferably, the first power mechanism is a drive motor.

[0013] Preferably, the control mechanism further includes a vibration sensor, which is a relative electric sensor or an eddy current sensor, used to measure the vibration condition of the output shaft of the first power mechanism.

[0014] Preferably, the second power mechanism is a drive motor or a cylinder.

[0015] Preferably, the sliding platform has a sliding groove, and the grinding platform is provided with a slider that slides in cooperation with the sliding groove.

[0016] Preferably, the displacement sensor is an encoder.

[0017] Preferably, the force sensor is a piezoelectric sensor or a strain gauge sensor.

[0018] Preferably, the controller is a PLC controller or a development board.

[0019] Preferably, the grinding forming system further includes a cooling mechanism;

[0020] The cooling mechanism includes coolant nozzles, a coolant recovery tray, circulation piping, and a heat exchanger;

[0021] The coolant nozzle is positioned facing the grinding wheel, the coolant recovery tray is positioned below the grinding wheel, the coolant recovery tray is connected to the heat exchanger via a circulation pipeline, and the heat exchanger is connected to the coolant nozzle via a circulation pipeline.

[0022] Preferably, the grinding forming system further includes a sampling inspection mechanism;

[0023] The sampling inspection mechanism includes a transfer robotic arm, a blade sharpness tester, and a coordinate measuring machine;

[0024] The cutting edge sharpness tester and the coordinate measuring machine are respectively located downstream of the grinding mechanism, and the transfer robotic arm is located between the cutting edge sharpness tester, the coordinate measuring machine and the grinding mechanism.

[0025] The working principle of this utility model is as follows:

[0026] The grinding platform is positioned and adjusted by sliding on a sliding platform via a second power mechanism; the grinding wheel is driven to rotate by a first power mechanism to grind the cutting insert to be ground on the grinding platform. During the grinding process, the displacement change of the grinding platform (cutting insert to be ground) is obtained by a displacement sensor, and the force condition of the grinding wheel is obtained by a force sensor.

[0027] Compared with the prior art, the present invention has the following beneficial effects:

[0028] In the past, the evaluation of the operating status of grinding equipment and the grinding process and effect of cutting edges was relatively lagging. Problems were usually only discovered through testing after grinding was completed. If equipment failure or grinding abnormalities occurred, a batch of cutting edges may be found to be of substandard quality, resulting in significant losses.

[0029] The grinding forming system provided in this solution is first equipped with multiple sensors to acquire several key parameters and indicators affecting the grinding effect during the grinding forming process, including feed rate (acquired through displacement sensors), force condition of the cutting tool to be ground (acquired through force sensors), and vibration condition of the output shaft of the motor driving the grinding wheel (acquired through vibration sensors). This allows for timely feedback of changes during the grinding forming process to the operator, who can then make rapid adjustments based on the actual situation. Simultaneously, a downstream sampling inspection mechanism can quickly inspect the grinding effect of the semi-finished product after grinding forming, promptly identifying defective products. This enables the operator to adjust parameters during the grinding forming process of subsequent cutting tools in the same batch to reduce the scrap rate, ensure smooth grinding operations, and improve overall production efficiency. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the grinding forming system.

[0031] Figure 2 This is a side view schematic diagram of the grinding forming system.

[0032] In the figure: 1-grinding mechanism; 2-feeding mechanism; 11-grinding wheel; 12-first power mechanism; 21-grinding platform; 22-sliding platform; 23-second power mechanism. Detailed Implementation

[0033] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0034] For any matters not covered below, existing technologies may be used.

[0035] Example

[0036] A blade grinding and shaping system, such as Figure 1 , 2 As shown, it includes a grinding mechanism 1, a feeding mechanism 2, and a control mechanism;

[0037] The grinding mechanism 1 includes a grinding wheel 11 and a first power mechanism 12, wherein the grinding wheel 11 is assembled at the output end of the first power mechanism 12;

[0038] The feed mechanism 2 includes a grinding platform 21, a sliding platform 22, and a second power mechanism 23. The grinding platform 21 is used to set the cutting tool to be ground. The grinding platform 21 is mounted on the output end of the second power mechanism 23. The grinding platform 21 and the sliding platform 22 are in sliding cooperation.

[0039] The control mechanism includes a displacement sensor, a force sensor, and a controller. The displacement sensor is mounted on the second power mechanism 23, and the force sensor is mounted on the grinding wheel 11. The displacement sensor and the force sensor are electrically connected to the controller.

[0040] More specifically, in this embodiment:

[0041] The grinding forming system specifically includes a grinding mechanism 1, a feeding mechanism 2, a control mechanism, a cooling mechanism, and a sampling mechanism.

[0042] Grinding mechanism 1, such as Figure 1 , 2 As shown, the device includes a grinding wheel 11 and a first power mechanism 12; wherein, the first power mechanism 12 is a drive motor, and the grinding wheel 11 is mounted on the output shaft of the first power mechanism 12 and is driven to rotate by the first power mechanism 12. The grinding wheel 11 can be made of conventional materials, preferably cubic boron nitride; in addition, the grit size of the grinding wheel 11 is determined according to the actual grinding effect requirements.

[0043] Feed mechanism 2, such as Figure 1 , 2 As shown, it includes a grinding platform 21, a sliding platform 22, and a second power mechanism 23; wherein, the second power mechanism 23 can be a drive motor or a cylinder. In this embodiment, a drive motor is used as an example for description. The sliding platform 22 is provided with a sliding groove, and the grinding platform 21 is provided with a slider that slides in cooperation with the sliding groove. Therefore, the grinding platform 21 can slide along the sliding groove of the sliding platform 22. Furthermore, the grinding platform 21 is used to set the cutting tool to be ground.

[0044] The control mechanism, not shown in the figure, includes a displacement sensor, a force sensor, a vibration sensor, and a controller, with each sensor electrically connected to the controller. The displacement sensor, an encoder, is mounted on the second power mechanism 23 and acquires the movement distance of the grinding platform 21 (the cutting insert to be ground), which corresponds to the feed rate. The force sensor, which can be a piezoelectric or strain gauge sensor, is mounted on the grinding wheel 11 to acquire the force condition of the grinding wheel 11, reflecting the grinding force experienced by the cutting insert during the grinding process. (For example, when a sudden increase in grinding force is detected, the operator can control the grinding platform 21 to move away from the grinding wheel to reduce the feed rate, avoiding surface damage or dimensional deviation of the cutting insert due to excessive grinding force, thereby effectively improving grinding accuracy and consistency and enhancing product quality.) The vibration sensor, which can be a relative electric sensor or an eddy current sensor, is mounted on or towards the output shaft of the first power mechanism 12, depending on the specific type of sensor, to collect the vibration of the output shaft of the first power mechanism 12. The controller uses a PLC controller, or a development board such as a microcontroller. All the sensors and controllers mentioned above can be purchased directly from commercially available products of suitable models; there are no particular limitations or restrictions. Their specific structure and selection are not improvements made in this solution.

[0045] The cooling mechanism, not shown in the figure, specifically includes coolant nozzles, a coolant recovery tray, circulation piping, and a heat exchanger. The coolant nozzles are positioned towards the grinding wheel 11, spraying coolant onto it to cool the grinding process. The coolant recovery tray is located below the grinding wheel 11 to collect the coolant. The coolant recovery tray is connected to the heat exchanger via circulation piping to cool the absorbed coolant for reuse. The heat exchanger is then connected to the coolant nozzles via circulation piping to circulate the cooled coolant. A replenishment branch for adding coolant is also provided on the circulation piping, equipped with a switch valve. Furthermore, a pressure pump can be installed on the circulation piping between the heat exchanger and the coolant nozzles to achieve high-pressure coolant injection. Furthermore, to better control the cooling effect of the coolant, an infrared temperature sensor can be installed facing the grinding wheel 1 (preferably positioned on both sides of the grinding wheel 11 along with the coolant nozzle to minimize the direct impact of the coolant on temperature detection). This allows the operator to adjust the coolant flow rate based on the temperature of the grinding wheel 11, preventing overheating during continuous grinding. Even further, to prevent the coolant from carrying grinding debris and particles into the circulation system, a coolant filter or screen can be installed at the inlet of the circulation pipe (where it connects to the coolant recovery tray).

[0046] In some embodiments, the grinding wheel 11 can be an internally cooled grinding wheel for heat dissipation, in which case the cooling mechanism can be omitted.

[0047] The sampling inspection mechanism, not shown in the diagram, consists at least of a transfer robotic arm, a cutting edge sharpness tester, and a coordinate measuring machine (CMM). The cutting edge sharpness tester and CMM are respectively positioned downstream of the grinding mechanism 1 (they can be arranged sequentially according to the testing order). The transfer robotic arm is positioned between the grinding mechanism 1, the cutting edge sharpness tester, and the CMM to transfer the ground blade semi-finished products between these mechanisms for sampling inspection. Furthermore, depending on the sampling inspection needs, optical microscopes and electron microscopes can be added to observe whether there are defects such as scratches, cracks, or burn marks on the blade surface. If the sampling inspection mechanism finds that the sampled blade semi-finished products do not meet the product performance requirements, the operator can combine the grinding process data of that batch obtained from various sensors to adjust the grinding parameters in a timely manner during the grinding process of subsequent batches for optimization. If the batch can meet the performance requirements through reprocessing, it can be processed and corrected again; if it cannot be reprocessed, it is scrapped. Therefore, only a single batch of semi-finished products needs to be scrapped to obtain products that meet quality requirements, avoiding the need to scrap the entire batch after grinding, thus reducing the scrap rate and improving overall production efficiency. The cutting edge sharpness tester, coordinate measuring machine, optical microscope, and electron microscope used above can all be commercially available products that meet testing standards.

[0048] This system can be used in conjunction with existing CNC grinding machines, providing a precise adjustable range and amplitude to achieve high-precision, high-quality grinding. Specifically, when using this grinding forming system, the thickness of the processed product (insert) is between 0.08 and 0.3 mm. Depending on the specific processing requirements, the insert can be double-edged or single-edged, with the cutting angle adjustable between 15 and 45°.

[0049] In summary, compared with existing technologies, this system demonstrates significant advantages in improving blade grinding quality, increasing production efficiency, reducing production costs, and achieving green manufacturing, which will strongly promote the better application and development of blades as medical devices in the medical field.

[0050] The above description of the embodiments is provided to enable those skilled in the art to understand and use the utility model. It will be apparent to those skilled in the art that various modifications can be easily made to these embodiments, and the general principles described herein can be applied to other embodiments without inventive effort. Therefore, the present utility model is not limited to the above embodiments, and any improvements and modifications made by those skilled in the art based on the disclosure of the present utility model without departing from its scope should be within the protection scope of the present utility model.

Claims

1. A blade grinding and shaping system, characterized in that, It includes a grinding mechanism (1), a feeding mechanism (2), and a control mechanism; The grinding mechanism (1) includes a grinding wheel (11) and a first power mechanism (12), wherein the grinding wheel (11) is assembled at the output end of the first power mechanism (12); The feed mechanism (2) includes a grinding platform (21), a sliding platform (22), and a second power mechanism (23). The grinding platform (21) is used to set the cutting tool to be ground. The grinding platform (21) is mounted on the output end of the second power mechanism (23). The grinding platform (21) and the sliding platform (22) are in sliding cooperation. The control mechanism includes a displacement sensor, a force sensor and a controller. The displacement sensor is mounted on the second power mechanism (23) and the force sensor is mounted on the grinding wheel (11). The displacement sensor and the force sensor are electrically connected to the controller.

2. The blade grinding and shaping system according to claim 1, characterized in that, The first power mechanism (12) is a drive motor.

3. The blade grinding and shaping system according to claim 2, characterized in that, The control mechanism also includes a vibration sensor, which is a relative electric sensor or an eddy current sensor, used to measure the vibration status of the output shaft of the first power mechanism (12).

4. The blade grinding and shaping system according to claim 1, characterized in that, The second power mechanism (23) is a drive motor or a cylinder.

5. The blade grinding and shaping system according to claim 1, characterized in that, The sliding platform (22) is provided with a sliding groove, and the grinding platform (21) is provided with a slider that slides in cooperation with the sliding groove.

6. The blade grinding and shaping system according to claim 1, characterized in that, The displacement sensor mentioned is an encoder.

7. The blade grinding and shaping system according to claim 1, characterized in that, The force sensor is either a piezoelectric sensor or a strain gauge sensor.

8. The blade grinding and shaping system according to claim 1, characterized in that, The controller is a PLC controller or a development board.

9. The blade grinding and shaping system according to claim 1, characterized in that, The grinding and forming system also includes a cooling mechanism; The cooling mechanism includes coolant nozzles, a coolant recovery tray, circulation piping, and a heat exchanger; The coolant nozzle is positioned facing the grinding wheel (11), the coolant recovery tray is positioned below the grinding wheel (11), the coolant recovery tray is connected to the heat exchanger via a circulation pipeline, and the heat exchanger is connected to the coolant nozzle via a circulation pipeline.

10. The blade grinding and shaping system according to claim 1, characterized in that, The grinding and forming system also includes a sampling inspection mechanism; The sampling inspection mechanism includes a transfer robotic arm, a blade sharpness tester, and a coordinate measuring machine; The cutting edge sharpness tester and the coordinate measuring machine are respectively located downstream of the grinding mechanism (1), and the transfer robotic arm is located between the cutting edge sharpness tester, the coordinate measuring machine and the grinding mechanism (1).

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