An abrasive grain arrangement system, a preparation device and a method for optimizing an abrasive tool

Abstract

The application provides a preparation device for optimizing an abrasive tool by arranging abrasive particles, wherein working liquid pumped from a liquid storage tank is injected into the center of a disc through a nozzle with an inner diameter ranging from 2 mm to 10 mm, the height of the liquid film is controlled by adjusting the vertical distance between the nozzle and the surface of the disc, adjusting the rotating speed of the liquid pump and the rotating speed of the disc, the ordered arrangement of the abrasive particles on the substrate is realized, then a resin layer with a proper thickness is coated by a coater, and the resin layer is solidified. The application has the advantages of simple structure, convenient use, fast and controllable abrasive particle arrangement process, accurate control of the position of the abrasive particles and improved service life of the abrasive tool. The arrangement effect of the abrasive particles is evaluated and optimized by changing different experimental variables and parameters such as the rotating speed of the disc, the fluid medium, the fluid flow rate, the fluid injection height, the size of the nozzle, the structure of the nozzle and auxiliary mechanical structures. The application further provides a preparation method of the preparation device.

Description

Technical Field

[0001] The present invention relates to the field of mechanical processing, in particular to grinding processing. Background Art

[0002] Grinding is the process of cutting using abrasive grains bonded to a grinding tool. During the grinding process, the quality of the workpiece is determined by the combined action of the abrasive grains in different positions. Grinding tools are generally made by pressing and sintering abrasive grains and a binder. This method results in a randomly distributed abrasive grain, which can easily lead to uneven distribution and unreasonable spacing between grains, causing the grains to break or fall out prematurely. Therefore, properly controlling the arrangement of the abrasive grains on the surface of the grinding tool ensures uniform force and proper wear, increases the chip space on the working surface of the grinding tool, and thus comprehensively improves the grinding performance and service life of the grinding tool.

[0003] Abrasive tools with ordered abrasive arrangement are a new type of abrasive tool that has emerged in recent years. They can effectively solve the problems of uneven abrasive distribution and low utilization, and scholars at home and abroad have conducted extensive research on this topic. However, due to the many factors that affect the manufacturing of ordered abrasive tools, existing abrasive arrangement methods still have many shortcomings. For example, in terms of arrangement technology, there are generally problems such as low arrangement efficiency, poor abrasive positioning accuracy, and the susceptibility to missing abrasive particles. In terms of manufacturing technology, there is also a lack of unified standards for the impact of arrangement methods on abrasive tool performance, and the abrasive tool manufacturing process is complex. These issues affect the manufacturing accuracy of ordered abrasive tools and hinder the development of ordered abrasive tools in the field of application. Therefore, seeking new methods to manufacture precision ordered abrasive tools is of great significance to improving the manufacturing level and application development of ordered abrasive tools.

[0004] In summary, it is necessary to design and develop a new type of abrasive arrangement device, which uses the liquid film flow on the surface of the rotating disc as the driving and control means for the uniform dispersion and position arrangement of the abrasive particles, overcoming the shortcomings of the existing technology. Summary of the Invention

[0005] The first technical problem to be solved by the present invention is to provide an abrasive arrangement system to optimize the grinding tool, so as to achieve efficient, rapid, multi-layer and orderly arrangement of abrasives in the working layer.

[0006] The second technical problem to be solved by the present invention is to provide a method for optimizing the abrasive arrangement system, which can not only improve the abrasive positioning accuracy and reduce the loss of abrasive particles, but also realize the orderly arrangement of multiple particles and small particles in multiple layers.

[0007] In order to solve the above technical problems, the present invention provides a device for preparing abrasive tools with an optimized abrasive arrangement system, comprising a rotating disc mechanism and an outer frame;

[0008] The rotating disc mechanism includes a liquid supply system, a control system and a measurement system;

[0009] The liquid supply system includes a liquid pump, a liquid storage tank, an agitator, a liquid collecting tank, and a pipeline; the agitator is placed in the liquid storage tank; the liquid inlet of the liquid pump is connected to the liquid storage tank via a pipeline, and the liquid outlet is connected to a nozzle via a pipeline, and the nozzle is arranged above the liquid collecting tank; a disk is arranged in the liquid collecting tank, a substrate is arranged on the upper surface of the disk, and a motor is arranged on the lower surface of the disk;

[0010] In the control system, the microcontroller provides signals to the motor drive module to drive the motor to rotate, and the speed is adjusted through the encoder feedback on the motor;

[0011] In the measurement system, the light source is fixed above the liquid collecting tank, a high-speed camera is used to take pictures of the abrasive arrangement, and the abrasive dispersion is analyzed by image analysis technology;

[0012] The working liquid flowing out of the liquid storage tank is injected into the center of the disc through a nozzle with an inner diameter range of 2-10mm. The height of the liquid film is controlled by adjusting the vertical distance between the nozzle and the disc surface, adjusting the speed of the liquid pump and the speed of the disc to achieve orderly arrangement of the abrasive particles on the substrate. Then a layer of resin of appropriate thickness is applied by a coater and solidified.

[0013] In a preferred embodiment, the disc is provided with a plurality of regularly arranged through-holes for connecting a plurality of electromagnets, and the abrasive particles are adsorbed on the substrate by controlling the on and off of the electromagnets.

[0014] In a preferred embodiment, the nozzle is fixed on the outer frame, and the screw rod is driven up and down by a stepping motor to control the vertical distance between the nozzle and the surface of the disk.

[0015] In a preferred embodiment, the nozzle is a double-layer nested structure.

[0016] In a preferred embodiment, the light source and the high-speed camera are adjusted in height by a screw lifting mechanism.

[0017] The present invention also provides a method for preparing the above-mentioned preparation device, comprising the following steps:

[0018] 1) Adjust the vertical distance between the nozzle and the disc surface, mix the abrasive and the working liquid evenly by stirring with a stirrer, and use a liquid pump to deliver the working liquid to the nozzle at a certain volume flow rate for spraying;

[0019] 2) Adjust the disk speed to control the liquid film height so that the abrasive particles are evenly distributed on the substrate along with the working liquid. Turn on the electromagnet to adsorb the abrasive particles on the substrate, forming an orderly arrangement of the abrasive particles.

[0020] 3) applying a resin layer of appropriate thickness on the substrate by a coater;

[0021] 4) curing the resin monolayer with the orderly arranged abrasive particles to form a cured monolayer;

[0022] 5) Repeat steps 1) to 4) on the above solidified single layer until the desired thickness is reached.

[0023] In a preferred embodiment, the abrasive particles are selected from one of diamond, cubic boron nitride, aluminum oxide, silicon carbide, or a combination thereof.

[0024] In a preferred embodiment, the abrasive grains are coated with ferroferric oxide to make them magnetic.

[0025] In a preferred embodiment, the resin is a light-curing resin or an epoxy resin.

[0026] Compared with the prior art, the technical solution of the present invention has the following beneficial effects:

[0027] The present invention provides a preparation device for optimizing abrasive tools through an abrasive arrangement system. The device has a simple structure and is easy to use. The abrasive arrangement process is fast and controllable, and precise control of the abrasive position can be achieved, thereby improving the life of the abrasive tool. The present invention evaluates and optimizes the abrasive arrangement effect by changing different experimental variables and parameters such as the disc rotation speed, fluid medium, fluid flow rate, fluid ejection height, nozzle size, nozzle structure, and auxiliary mechanical structure, and has strong controllability. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0029] Figure 2 Schematic diagram of the disc of the present invention, wherein a is a main view and b is a cross-sectional view;

[0030] Figure 3 It is a partial schematic diagram of the rotating disc mechanism of the present invention.

[0031] Reference numerals: liquid storage tank 1 , stirrer 2 , liquid collecting tank 3 , motor 4 , electromagnet 5 , disc 6 , substrate 7 , nozzle 8 , light source 9 , high-speed camera 10 , stepping motor 11 , screw 12 , pipeline 13 , liquid pump 14 . DETAILED DESCRIPTION

[0032] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only 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 ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0033] In the description of the present invention, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0034] In the description of the present invention, it should be noted that, unless otherwise clearly stipulated and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0035] refer to Figure 1-Figure 3 , this embodiment provides a device for preparing abrasive tools with an optimized abrasive arrangement system, comprising a rotating disc mechanism and an outer frame;

[0036] The rotating disc mechanism includes a liquid supply system, a control system and a measurement system;

[0037] The liquid supply system includes a liquid pump 14, a liquid storage tank 1, an agitator 2, a liquid collecting tank 3, and a pipeline 13; the agitator 2 is placed in the liquid storage tank 1; the liquid inlet of the liquid pump 14 is connected to the liquid storage tank 1 via a pipeline 13, and the liquid outlet is connected to a nozzle 8 via a pipeline 13, and the nozzle 8 is arranged above the liquid collecting tank 3; a disk 6 is arranged in the liquid collecting tank 3, a substrate 7 is arranged on the upper surface of the disk 6, and a motor 4 is arranged on the lower surface of the disk 6;

[0038] In the control system, the single chip microcomputer provides a signal to the motor drive module to drive the motor 4 to rotate, and the speed is adjusted through the encoder feedback on the motor 4;

[0039] In the measurement system, the light source is fixed above the liquid collecting tank 3, a high-speed camera 10 is used to take pictures of the abrasive arrangement, and MATLAB image analysis technology is used to analyze the abrasive dispersion;

[0040] The working liquid flowing out of the liquid storage tank 1 is injected into the center of the disk 6 through the nozzle 8 with an inner diameter range of 2-10mm. The height of the liquid film is controlled by adjusting the vertical distance between the nozzle 8 and the surface of the disk 6, adjusting the rotation speed of the liquid pump 14 and the rotation speed of the disk 6, so as to achieve the orderly arrangement of the abrasive particles on the substrate 7, and then a resin layer of appropriate thickness is applied by the coater and solidified.

[0041] The disk 6 is provided with a number of regularly spaced through-holes for connecting a number of electromagnets 5. By controlling the on and off power of the electromagnets 5, the abrasive particles are adsorbed on the substrate 7. The nozzle 8 is fixed to the outer frame, and the stepper motor 4 drives the screw to rise and fall to control the vertical distance between the nozzle 8 and the surface of the disk 6.

[0042] The nozzle 8 is a double-layer nested structure. The light source and high-speed camera 10 are adjusted in height by a screw lifting mechanism. The screw lifting mechanism includes a stepping motor 11 and a screw 12.

[0043] The present invention also provides a method for preparing the above-mentioned preparation device, comprising the following steps:

[0044] 1) Adjust the vertical distance between the nozzle 8 and the surface of the disc 6, mix the abrasive and the working liquid evenly by stirring with the stirrer 2, and use the liquid pump 14 to deliver the working liquid to the nozzle 8 at a certain volume flow rate for spraying;

[0045] 2) Adjust the rotation speed of the disk 6 to control the height of the liquid film so that the abrasive particles are evenly distributed on the substrate 7 along with the working liquid. Turn on the electromagnet 5 to adsorb the abrasive particles on the substrate 7, forming an orderly arrangement of the abrasive particles.

[0046] 3) coating a resin layer of appropriate thickness on the substrate 7 by a coater;

[0047] 4) curing the resin monolayer with the orderly arranged abrasive particles to form a cured monolayer;

[0048] 5) Repeat steps 1) to 4) on the above solidified single layer until the desired thickness is reached.

[0049] In this embodiment, the abrasive particles are selected from one of diamond, cubic boron nitride, aluminum oxide, and silicon carbide, or a combination thereof. The abrasive particles are coated with ferroferric oxide to impart magnetic properties. The resin is a light-curing resin or an epoxy resin.

[0050] The above-mentioned abrasive arrangement system optimizes the preparation device of the grinding tool, has a simple structure, is easy to use, and the abrasive arrangement process is fast and controllable, which can achieve precise control of the abrasive position and improve the life of the grinding tool; the present invention can evaluate and optimize the arrangement effect of the abrasive by changing different experimental variables and parameters such as the rotation speed of the disc 6, the fluid medium, the fluid flow rate, the fluid ejection height, the nozzle 8 size, the nozzle 8 structure, and the auxiliary mechanical structure, and has strong controllability.

[0051] The above is only a preferred specific embodiment of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with this technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the scope of protection of the present invention.

Claims

1. A method for preparing a grinding tool with an optimized abrasive arrangement system, characterized in that The abrasive arrangement system used to optimize the preparation of the abrasive tool includes: a rotating disc mechanism and an outer frame; The rotating disc mechanism includes a liquid supply system, a control system and a measurement system; The liquid supply system includes a liquid pump, a liquid storage tank, an agitator, a liquid collecting tank, and a pipeline; the agitator is placed in the liquid storage tank; the liquid inlet of the liquid pump is connected to the liquid storage tank via a pipeline, and the liquid outlet is connected to a nozzle via a pipeline, and the nozzle is arranged above the liquid collecting tank; a disk is arranged in the liquid collecting tank, a substrate is arranged on the upper surface of the disk, and a motor is arranged on the lower surface of the disk; In the control system, the microcontroller provides signals to the motor drive module to drive the motor to rotate, and the speed is adjusted through the encoder feedback on the motor; In the measurement system, the light source is fixed above the liquid collecting tank, a high-speed camera is used to take pictures of the abrasive arrangement, and the abrasive dispersion is analyzed by image analysis technology; The working liquid flowing out of the liquid storage tank is injected into the center of the disc through a nozzle with an inner diameter range of 2-10mm. The height of the liquid film is controlled by adjusting the vertical distance between the nozzle and the disc surface, the speed of the liquid pump and the speed of the disc to achieve orderly arrangement of the abrasive particles on the substrate. Then a layer of resin of appropriate thickness is applied by a coater and solidified. The disc is provided with a number of regularly arranged through-holes for connecting a number of electromagnets. The abrasive particles are adsorbed on the substrate by controlling the on and off power of the electromagnets. The nozzle is fixed to the outer frame, and the stepper motor drives the screw to rise and fall to control the vertical distance between the nozzle and the disc surface. The nozzle can be replaced with different types according to actual needs. The light source and high-speed camera are adjusted in height by the screw lifting mechanism. The preparation method comprises the following steps: 1) Adjust the vertical distance between the nozzle and the disc surface, use the stirrer to mix the abrasive and the working liquid evenly, and use the liquid pump to deliver the working liquid to the nozzle at a certain volume flow rate for spraying; 2) Adjust the disk speed to control the liquid film height so that the abrasive particles are evenly distributed on the substrate along with the working fluid. Turn on the electromagnet to adsorb the abrasive particles on the substrate, forming an orderly arrangement of the abrasive particles. 3) Apply a resin layer of appropriate thickness on the substrate through a coater; 4) curing the resin monolayer with the orderly arranged abrasive particles to form a cured monolayer; 5) Repeat steps 1) to 4) on the above solidified single layer until the desired thickness is reached.

2. The method for preparing a grinding tool with an optimized abrasive arrangement system according to claim 1, characterized in that: The abrasive particles are selected from one or more of diamond, cubic boron nitride, aluminum oxide, and silicon carbide.

3. The method for preparing a grinding tool with an optimized abrasive arrangement system according to claim 1, characterized in that: The abrasive grains are coated with ferroferric oxide, which makes them magnetic.

4. The method for preparing a grinding tool with an optimized abrasive arrangement system according to claim 1, characterized in that: The resin is a light-curing resin.

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