A double-sided grinding device for an ultra-precision ophthalmic surgical cutter

Abstract

The application belongs to the technical field of tool machining, and particularly relates to a double-face grinding device for super-precision ophthalmic surgical tools, which comprises a clamping assembly and a grinding assembly. The clamping assembly comprises a first push rod and a chuck, and the chuck is used for clamping a tool to be machined. The grinding assembly comprises a bottom plate, and side plates are arranged on both sides of the bottom plate. Sliding rails are arranged on the two side plates. A grinding seat is slidably arranged on the sliding rails. A linear guide rail is arranged in the grinding seat. A fixed grinding wheel is fixedly arranged at one end of the linear guide rail. A movable grinding wheel is slidably arranged on the other end of the linear guide rail. The movable grinding wheel can be driven to slide on the linear guide rail by a second push rod. The application improves the sharpness and symmetry of the tool by double-face grinding wheel grinding, solves the problem of unevenness in traditional single-face grinding, and adjusts the grinding angle and pressure by controlling the distance between the grinding seat position on the sliding rail and the grinding wheel, so that the size and angle of each tool meet strict medical standards.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of tool processing, and particularly relates to a double-sided grinding device for super-precision ophthalmic surgical knives. BACKGROUND

[0002] As one of the most critical tools in surgical operations, the sharpness, durability and precision of surgical knives directly affect the success rate of operations and the postoperative recovery of patients. With the development of medical technology, the processing technology of surgical knives is also constantly improving. Existing surgical knife manufacturing usually adopts high-precision CNC (Computer Numerical Control) grinding, laser cutting and polishing technology. Through these advanced processes, the cutting edge of the surgical knife can be processed to a sharpness of microns. In particular, in minimally invasive surgery, the precision of the surgical knife is particularly important. However, despite the fact that existing technologies have greatly improved the manufacturing quality of surgical knives, there are still several technical bottlenecks that need to be further addressed.

[0003] Firstly, existing grinding processing technology is prone to local heat accumulation when dealing with high-hardness materials such as stainless steel, titanium alloy, etc., resulting in thermal damage to the cutting edge. This damage can change the microstructure of the cutting edge material, causing it to anneal or become brittle, thereby affecting the sharpness and durability of the cutting edge. Although the use of cooling liquid during processing can alleviate this problem to some extent, in high-strength, multiple grinding processing scenarios, thermal damage cannot be ignored, especially when the knife is used for a long time during surgery, the cutting tool is prone to dullness.

[0004] Secondly, although existing polishing processes can improve the surface finish of the cutting edge, micro cracks may still occur on the surface of the cutting edge during fine grinding and polishing. These cracks gradually expand during frequent use and disinfection, increasing the risk of tool breakage. Once a surgical knife has a small crack, not only will it affect its cutting performance, but it may also cause additional damage to the patient's tissue during the operation. In addition, cracks are prone to become a breeding ground for bacteria, increasing the risk of infection.

[0005] In addition, the precision and consistency of the cutting edge processing still face challenges, especially when processing complex shapes or asymmetric cutting edges, the thickness, angle and sharpness of the cutting tool may not be completely consistent. This consistency problem affects the quality of the surgical knife, causing different cutting tools to perform differently during the operation, adding additional difficulty to the surgeon's operation, and also putting higher requirements on quality control.

[0006] In addition, in order to ensure the high sharpness and surface smoothness of the cutting tool, the existing surgical knife processing technology usually requires multiple grinding and polishing. These multiple processing steps not only take a long time and have low production efficiency, but also significantly increase the manufacturing cost. For hospitals or clinics with high demand for medical equipment, the high cost and inefficient manufacturing process makes the supply of surgical knives a big challenge.

[0007] More importantly, the surgical knife is prone to blunt after multiple uses, especially during sterilization and reuse, the wear of the blade is accelerated, resulting in reduced cutting effect in surgery. Therefore, medical institutions need to frequently replace the knife or regrind, which greatly increases the maintenance cost of the hospital and also poses a hidden danger to the safety of surgery.

[0008] Therefore, the main deficiencies in the prior art include thermal damage in blade processing, micro-crack problems, poor processing consistency, low production efficiency and high cost. In the face of these problems, it is urgent to develop a new processing method or technology that can improve the durability of the knife, improve the processing efficiency, and significantly reduce the production cost, thereby improving the quality and service life of the surgical knife. SUMMARY

[0009] To solve the problems existing in the prior art, the main purpose of the present application is to provide a double-sided grinding device for ultra-precision ophthalmic surgical knives, which can solve the problems of low precision, low processing efficiency, poor blade consistency and difficult to control surface quality of existing surgical knives during processing.

[0010] According to one aspect of the present application, the present application provides the following technical scheme:

[0011] A double-sided grinding device for ultra-precision ophthalmic surgical knives, the device comprises a clamping assembly, the clamping assembly comprises a first push rod and a chuck connected, the first push rod is connected with a first push rod motor, the chuck is used for clamping the knife to be processed, the device further comprises a grinding assembly, the grinding assembly comprises a bottom plate, both sides of the bottom plate are provided with side plates, both side plates are provided with sliding rails driven by a sliding rail motor, the grinding seat is slidably arranged on the sliding rail, the linear guide is arranged in the grinding seat, the fixed grinding wheel is fixedly arranged at one end of the linear guide, the movable grinding wheel is slidably arranged on the other end of the linear guide, the movable grinding wheel can be driven to slide on the linear guide by the second push rod, the second push rod is connected with a second push rod motor, the fixed grinding wheel and the movable grinding wheel are used for processing the blade of the knife to be processed.

[0012] The device can realize accurate adjustment of the fixed grinding wheel and the movable grinding wheel in the horizontal and vertical directions of the blade through the cooperation of the sliding rail and the linear guide. On the one hand, the position of the grinding seat on the sliding rail of the side plate can be changed to grind different positions of the blade of the knife. On the other hand, the distance between the fixed grinding wheel and the movable grinding wheel arranged on the grinding seat can be adjusted to process the edge slope of the blade.

[0013] As a kind of double-sided grinding device of the ultra-precision ophthalmic surgical cutter of the application, the preferred scheme is as follows: the fixed grinding wheel is driven by the first grinding wheel motor, the movable grinding wheel is driven by the second grinding wheel motor, the first grinding wheel motor is fixedly connected with the linear guide rail through the fixed seat, the lower end of the second grinding wheel motor is fixedly connected with the sliding seat, the lower end of the sliding seat is slidably connected with the linear guide rail, and the sliding seat is fixedly connected with the second push rod on one side.

[0014] As a kind of double-sided grinding device of the ultra-precision ophthalmic surgical cutter of the application, the preferred scheme is as follows: the linear guide rail is arranged perpendicularly to the sliding rail.

[0015] As a kind of double-sided grinding device of the ultra-precision ophthalmic surgical cutter of the application, the preferred scheme is as follows: the sliding rail is provided with a sliding block, and the sliding block is fixedly connected with the grinding seat.

[0016] As a kind of double-sided grinding device of the ultra-precision ophthalmic surgical cutter of the application, the preferred scheme is as follows: the two side plates are connected by a protective cover, and the top plate is arranged at the upper end of the two side plates.

[0017] As a kind of double-sided grinding device of the ultra-precision ophthalmic surgical cutter of the application, the preferred scheme is as follows: the device further comprises a control module, and the control module is electrically connected with the sliding rail motor, the first push rod motor, the second push rod motor, the first grinding wheel motor and the second grinding wheel motor.

[0018] As a kind of double-sided grinding device of the ultra-precision ophthalmic surgical cutter of the application, the preferred scheme is as follows: the middle part of the bottom plate is provided with a jet cleaning device, the jet cleaning device is provided with a micro fan, and the micro fan is electrically connected with the control module.

[0019] The application has the following beneficial effects:

[0020] 1. The application can grind the two edges of the surgical knife at the same time, greatly shortening the processing time, and through accurate automatic control and multi-level protection design, the grinding precision and the cleanliness of the operating environment are significantly improved, the sharpness and symmetry of the cutter are improved through double-sided grinding, the uneven problem of traditional single-sided grinding is solved, and the grinding angle and pressure can be adjusted by controlling the position of the grinding seat on the sliding rail and the position of the movable grinding wheel, so that the size and angle of each cutter can meet the strict medical standards.

[0021] 2. The application is provided with a jet cleaning device, which can clean the dust on the surface of the cutter in time during the grinding process, to prevent pollutants from affecting the quality of the cutter. DRAWINGS

[0022] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only aim to some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on the drawings shown.

[0023] Figure 1 It is a top view of the overall structure of the present application.

[0024] Figure 2 It is a structural schematic diagram of the grinding seat of the present application (part of the structure is not shown).

[0025] Figure 3 It is a top view of the grinding process of the present application.

[0026] Figure 4 It is a side view of the grinding process of the present application.

[0027] In the figure: 1-bottom plate; 2-sliding rail; 3-grinding seat; 4-jet cleaning device; 5-linear guide rail; 6-fixed grinding wheel; 7-movable grinding wheel; 8-fixed seat; 9-sliding seat; 10-first grinding wheel motor; 11-second grinding wheel motor; 12-second push rod; 13-sliding rail motor; 14-sliding block; 15-protective cover; 16-top plate; 17-chuck; 18-first push rod; 19-side plate; 20-knife edge; 21-first push rod motor; 22-second push rod motor.

[0028] The implementation, functional features and advantages of the present application will be further described with reference to the embodiments and the accompanying drawings. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments will be described clearly and completely below. Obviously, the described embodiments are only some of the embodiments of the present application, but not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative effort belong to the scope of protection of the present application.

[0030] According to one aspect of the present application, the present application provides the following technical solutions:

[0031] Referring to Figure 1 , 24. A double-sided grinding device for ultra-precision ophthalmic surgical tools, comprising a clamping assembly and a grinding assembly, wherein the clamping assembly comprises a first push rod 18 and a chuck 17 connected to each other, the first push rod 18 being connected to a first push rod motor 21, the chuck 17 being used to clamp the tool to be processed, the grinding assembly comprising a base plate 1, side plates 19 being provided on both sides of the base plate 1, slide rails 2 driven by a slide rail motor 13 being provided on both side plates 19, a grinding seat 3 being slidably provided on the slide rail 2, a linear guide rail 5 being provided in the grinding seat 3, a fixed grinding wheel 6 being fixed at one end of the linear guide rail 5, a movable grinding wheel 7 being slidably provided on the other end of the linear guide rail 5, the movable grinding wheel 7 being driven to slide on the linear guide rail 5 by a second push rod 12, the second push rod 12 being connected to the second push rod motor 22, the fixed grinding wheel 6 and the movable grinding wheel 7 being used to process the blade of the tool to be processed.

[0032] Preferably, the fixed grinding wheel 6 is driven by a first grinding wheel motor 10, and the movable grinding wheel 7 is driven by a second grinding wheel motor 11. The first grinding wheel motor 10 is fixedly connected to the linear guide rail 5 through a fixed seat 8. The lower end of the second grinding wheel motor 11 is fixedly connected to a sliding seat 9. The lower end of the sliding seat 9 is slidably connected to the linear guide rail 5, and one side of the sliding seat 9 is fixedly connected to the second push rod 12.

[0033] Preferably, the linear guide rail 5 is arranged perpendicular to the slide rail 2 .

[0034] Preferably, a slider 14 is provided in the slide rail 2 , and the slider 14 is fixedly connected to the grinding seat 3 .

[0035] Preferably, a protective cover 15 is connected between the two side panels 19, and a top plate 16 is provided on the upper ends of the two side panels 19. The protective cover 15 is made of a highly transparent material and forms an enclosed workspace around the entire grinding area, making it easy to observe the tool grinding process and preventing the operator from directly contacting the processing area. The enclosed area enclosed by the side panels 19, the top, and the protective cover 15 also prevents dust and metal debris from flying out.

[0036] Preferably, the device further comprises a control module (not shown in the figure, which can be an existing control module capable of achieving basic control functions, and the position of the control module does not need to be particularly limited, which can be conveniently electrically connected with other components), which is electrically connected with the slide rail motor 13, the first push rod motor 21, the second push rod motor 22, the first grinding wheel motor 10 and the second grinding wheel motor 11. Specifically, the control module controls the operation of the slide rail motor 13 according to the operation requirements, adjusts the accurate movement of the grinding seat in the horizontal direction, controls the second push rod motor 22 to adjust the distance between the fixed grinding wheel 6 and the movable grinding wheel 7, adjusts the position of the grinding wheel in the vertical direction, and the control module can adjust the rotating speed of different grinding wheels through the first grinding wheel motor 10 and the second grinding wheel motor 11. The control system can ensure the accurate adjustment of the cutting edge processing position through the cooperative control of different motors, and adjust the rotating speed and distance of the grinding wheel to ensure the accuracy of the grinding operation and the processing quality.

[0037] Preferably, the middle part of the bottom plate 1 is provided with a jet cleaning device 4, which is provided with a micro fan, and the micro fan is electrically connected with the control module. The micro fan can adjust the air flow intensity through the control module, automatically adjust according to the amount of dust generated during grinding, and blow the dust and debris on the surface of the tool and the grinding wheel directly. When the tool is grinding, the jet cleaning device 4 will automatically start to continuously blow off the dust on the surface of the tool, avoiding the accumulation and pollution of the tool edge. This design effectively prevents the problem of dust pollution during grinding, ensuring the processing quality of the surgical tool and the cleanliness of the working environment.

[0038] Embodiment 1

[0039] The specific implementation process of the device in tool processing is as follows:

[0040] Referring to Figure 3 、 4 , before tool grinding processing, check whether each motor is running normally to ensure that each motor is running normally. When the tool is processed, the tool to be processed is clamped on the chuck 17, the first push rod 18 (MPT-8T series standard type electric push rod) is installed behind the chuck 17, and the tool to be processed is stretched forward at a speed of 50-700 mm / s under the action of the first push rod 18, the cutting edge 20 enters the processing position, and the two side grinding seats 3 are respectively at the front end and the rear end, and the grinding wheel power is provided by the first grinding wheel motor 10 and the second grinding wheel motor 11. The rotating speed of the grinding wheel can be adjusted between 90~1300r / min, which is specifically adjusted according to the model of the surgical knife.

[0041] Through the input of processing instructions by the control module, the grinding seat 3 moves as a whole along the edge of the blade 20 under the drive of the slide rail motor 13, and grinding is performed. The two side grinding wheels move forward and backward staggeredly along the edge of the blade 20, and the two sides of the blade 20 are ground without collision. In the process of grinding, the air blowing and cleaning device 4 continuously blows air to clean the surface of the blade 20, preventing small particles generated during grinding from causing abrasive wear to the blade 20. During processing, under the control of the control module, the blade 20 will slowly move backward under the action of the first push rod 18. At this time, the side grinding wheel moves downward along the trajectory, and the parallel distance between the two becomes larger, so the processing trace will shift outward. At this time, the second push rod 12 (FD3-D electric push rod) in the grinding seat 3 pushes the movable grinding wheel 7 upward (at a speed of 45 mm / s), and the gap between the two grinding wheels decreases to realize the processing of the slope of the edge of the blade 20. The other grinding seat 3 processes the edge of the blade 20 staggeredly with the grinding seat 3, ensuring the force balance of the blade 20. After processing is completed, the second push rod 12 in the grinding seat 3 controls the grinding wheel to increase the gap between the two, and the tool also exits the processing position backward under the action of the rear electric push rod, and the processing is completed. The tool is taken out and inspected to ensure that the flatness, smoothness and sharpness of the grinding meet the requirements. If it is found that it does not meet the expectations, the operator can adjust and finely grind again.

[0042] The device automatically adjusts the position of the grinding seat 3 and the distance between the grinding wheels according to different types of working tools based on preset tool specification parameters. The control module calculates and automatically adjusts the operation of the motor according to the input tool specification parameters to realize the accurate movement of the grinding wheel in the horizontal and vertical directions. At the same time, according to the tool type and processing requirements, the control module can adjust the speed and distance of the grinding wheel to ensure the accuracy and processing quality of the grinding operation.

[0043] The above only describes the preferred embodiments of the present application, and does not limit the patent scope of the present application. Any equivalent structural transformation based on the inventive concept of the present application, or direct / indirect application in other related technical fields is included in the patent protection scope of the present application.

Claims

1. A double-sided grinding device for ultra-precision ophthalmic surgical cutters, the device comprising a clamping assembly, the clamping assembly comprising a first push rod connected to a first push rod motor and a chuck, the chuck being configured to clamp a cutter to be machined, characterised in that, The device further comprises a grinding assembly, the grinding assembly comprises a bottom plate, both sides of the bottom plate are provided with side plates, sliding rails driven by a sliding rail motor are arranged on the two side plates, a grinding seat is slidably arranged on the sliding rails, a linear guide rail is arranged in the grinding seat, a fixed grinding wheel is fixedly arranged at one end of the linear guide rail, a movable grinding wheel is slidably arranged on the other end of the linear guide rail, the movable grinding wheel can be driven to slide on the linear guide rail by a second push rod, the second push rod is connected with a second push rod motor, the fixed grinding wheel and the movable grinding wheel are located on the same side of the tool to be machined and are used for machining the same side of the tool to be machined; the fixed grinding wheel is driven by a first grinding wheel motor, the movable grinding wheel is driven by a second grinding wheel motor, the first grinding wheel motor is fixedly connected with the linear guide rail through a fixed seat, the second grinding wheel motor is fixedly connected with a sliding seat at the lower end, the sliding seat is slidably connected with the linear guide rail at the lower end, and the sliding seat is fixedly connected with the second push rod on one side. During the machining process, the cutting edge enters the machining position under the action of the first push rod, the grinding seat moves along the edge of the cutting edge as a whole under the driving of the sliding rail motor, and polishing is performed, the two side grinding wheels move forward and backward staggered along the cutting edge, and the two sides of the cutting edge are ground without collision, and during the machining process, the second push rod in the grinding seat on one side pushes the movable grinding wheel upward, so that the gap between the movable grinding wheel and the fixed grinding wheel in the grinding seat on one side is reduced, so as to realize the machining of the side edge slope of the cutting edge.

2. The double-side grinding apparatus of the ultra-precision ophthalmic surgical cutter according to claim 1, wherein, The linear guide rail is arranged perpendicularly to the sliding rail.

3. The double-side grinding apparatus of the ultra-precision ophthalmic surgical cutter according to claim 1, wherein, The sliding rail is provided with a sliding block, and the sliding block is fixedly connected with the grinding seat.

4. The double-side grinding apparatus of the ultra-precision ophthalmic surgical cutter according to claim 1, wherein, A protective cover is connected between the two side plates, and top plates are arranged at the upper ends of the two side plates.

5. The double-side grinding apparatus of the ultra-precision ophthalmic surgical cutter according to claim 1, wherein, The device further comprises a control module, and the control module is electrically connected with the sliding rail motor, the first push rod motor, the second push rod motor, the first grinding wheel motor and the second grinding wheel motor.

6. The double-side grinding apparatus of the ultra-precision ophthalmic surgical cutter according to claim 5, wherein, A jet cleaning device is arranged in the middle of the bottom plate, a micro fan is arranged in the jet cleaning device, and the micro fan is electrically connected with the control module.

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