An apparatus for preparing a grinding tool for a plane or a curved surface and a method for preparing a grinding tool

Abstract

The application discloses a kind of for plane or curved surface abrasive tool preparation device, it is related to abrasive tool advanced manufacturing technical field.The device includes workbench, abrasive arrangement mechanism, clamping mechanism and abrasive transfer mechanism, abrasive arrangement mechanism includes template and the material placing disc for carrying template, template is opened with multiple regularly arranged holes, each hole is used to accommodate abrasive, and satisfy when abrasive is placed in corresponding hole, the top of abrasive is higher than the top surface of template, clamping mechanism is used to clamp abrasive tool, the abrasive surface of abrasive tool is coated with first adhesive, abrasive transfer mechanism includes elastic rubber head, elastic rubber head is coated with second adhesive, and the viscosity of second adhesive is lower than first adhesive;The technical scheme of the application is that elastic rubber head adheres abrasive in template hole by abrasive transfer mechanism, and abrasive adhered by elastic rubber head is transferred and adhered to the abrasive surface of abrasive tool.The application can realize the ordered arrangement of abrasive on plane or curved surface abrasive tool.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of advanced manufacturing technology of abrasive tools, in particular to a device for preparing abrasive tools for flat or curved surfaces and a method for preparing abrasive tools. BACKGROUND

[0002] Grinding is a machining process that uses abrasive tools to remove material by high-speed rotation. It can be used for both flat surface machining and complex surface forming, and can perform rough grinding, rough grinding, heavy load grinding, and high-precision machining.

[0003] A grinding wheel is a commonly used tool for grinding. The distribution of abrasive particles on the surface of the grinding wheel has a great influence on the grinding performance of the grinding wheel and the surface quality of the ground material. The distribution of abrasive particles in traditional grinding wheels is usually random and irregular. In the grinding process, the number of dynamic effective abrasive particles is small, the additive effect of abrasive particles is not fully utilized, and problems such as small chip space, large grinding force, and high grinding temperature occur, which adversely affect the service life and processing efficiency of the grinding wheel, and the processing quality of the ground material surface. Therefore, the preparation of grinding wheels with ordered abrasive particles has become a hot topic in the field of abrasive tool manufacturing technology.

[0004] The invention patent with publication number CN101786263B discloses a new diamond abrasive ordered arrangement system and arrangement process. The ordered arrangement holes are arranged on the arrangement hole plate, and the abrasive particles are arranged by vacuum adsorption, thereby realizing the ordered arrangement of the abrasive particles. The invention patent with publication number CN105856088B provides a preparation device and method for abrasive particles with three-dimensional controllable arrangement. The abrasive particles are adsorbed into the conical holes of the arrangement disc to realize the single-layer ordered arrangement of the abrasive particles, and the required thickness of the grinding wheel is achieved by layer-by-layer solidification of the resin. In the above methods, the abrasive particles have a strong dependence on the arrangement hole plate or the arrangement disc, i.e., each type of abrasive wheel requires a corresponding arrangement hole plate or arrangement disc with a specific hole diameter, and the methods are mainly suitable for the preparation of flat grinding wheels (abrasive tools), which have weak universality and the precision of abrasive particle distribution depends on the precision machining of the arrangement hole plate or the arrangement disc.

[0005] The invention patent with the publication number CN104552044A discloses a device and method for ordered arrangement of single-layer abrasive grains of a special-shaped curved rotary abrasive tool. The device uses the principle of vacuum adsorption, forms negative pressure adsorption of diamond abrasive grains in micropores, and then controls the micropore device to move to a designated position and realize ordered arrangement of the abrasive grains in a certain way. The basic method is to adjust the height of the micropores so that the micropores are arranged in the shape of a special-shaped rotary body, thereby realizing ordered arrangement of the abrasive grains. Although the above method can meet the preparation of curved grinding wheels, the device for ordered arrangement of abrasive grains of a special-shaped curved rotary abrasive tool needs to arrange the micropores in the shape of a grinding wheel in advance, i.e., there are problems such as great operation difficulty and poor process repeatability, and the device of the negative pressure vacuum adsorption method is also too complex. SUMMARY

[0006] The present application aims to provide a device and method for preparing a flat or curved abrasive tool to solve the problems in the background art.

[0007] To achieve the above-mentioned purpose, the present application provides the following technical solution: a device for preparing a flat or curved abrasive tool, comprising a workbench, an abrasive arrangement mechanism, a clamping mechanism and an abrasive transfer mechanism. The abrasive arrangement mechanism comprises a template and a material placing disc for carrying the template. The template is provided with a plurality of regularly arranged holes. Each hole is used to accommodate abrasive material and satisfies that the top of the abrasive material is higher than the top surface of the template when the abrasive material is placed in the corresponding hole. The material placing disc is installed on the workbench. The clamping mechanism is installed on the workbench and is used to clamp and rotate an abrasive tool. The abrasive surface of the abrasive tool is coated with a first adhesive that can adhere to the abrasive material. The abrasive surface is formed by at least one combination of a flat surface or a curved surface. The abrasive transfer mechanism comprises an elastic rubber head. The elastic rubber head is coated with a second adhesive that can adhere to the abrasive material and has a lower viscosity than the first adhesive. The abrasive transfer mechanism can drive the elastic rubber head to adhere to the abrasive material in the hole of the template and transfer the adhesive abrasive material on the abrasive surface of the abrasive tool.

[0008] Based on the above technical features, the abrasive is placed in the template hole with regular arrangement by the abrasive arrangement mechanism, the elastic rubber head in the abrasive transfer mechanism adheres the abrasive in the template hole, and the abrasive of the elastic rubber head is transferred to the abrasive surface of the abrasive tool, in the process, the elastic rubber head in the present application will deform on the surface of the abrasive tool when adhering to the force, and the surface of the abrasive tool to be arranged with abrasive is profiled, which can realize the ordered arrangement of abrasive on the plane abrasive tool, and also can realize the ordered arrangement of abrasive on the curved surface of the abrasive tool by rotating the abrasive tool, so that the abrasive adhered to the surface of the elastic rubber head can be accurately positioned on the surface of the abrasive tool with different shapes, and the universality is good, and the universal range is wide. Meanwhile, compared with the scheme of the prior art, the technical scheme of the present application avoids complex and delicate operation, reduces the operation difficulty in the production process, and has strong process repeatability and facilitates process production.

[0009] Preferably in the technical scheme, the abrasive arrangement mechanism further comprises a material falling assembly and a material scraping assembly, the material falling assembly is arranged above the template and is used for scattering the abrasive on the top surface of the template, and the material scraping assembly is used for scraping the abrasive scattered on the top surface of the template into the hole of the template and scraping the excessive abrasive on the top surface of the template.

[0010] Based on the above technical features, the abrasive is placed in the template hole with regular arrangement by the abrasive arrangement mechanism, the elastic rubber head in the abrasive transfer mechanism adheres the abrasive in the template hole, and the abrasive of the elastic rubber head is transferred to the abrasive surface of the abrasive tool, in the process, the elastic rubber head in the present application will deform on the surface of the abrasive tool when adhering to the force, and the surface of the abrasive tool to be arranged with abrasive is profiled, which can realize the ordered arrangement of abrasive on the plane abrasive tool, and also can realize the ordered arrangement of abrasive on the curved surface of the abrasive tool by rotating the abrasive tool, so that the abrasive adhered to the surface of the elastic rubber head can be accurately positioned on the surface of the abrasive tool with different shapes, and the universality is good, and the universal range is wide. Meanwhile, compared with the scheme of the prior art, the technical scheme of the present application avoids complex and delicate operation, reduces the operation difficulty in the production process, and has strong process repeatability and facilitates process production.

[0011] Preferably in the technical scheme, the abrasive arrangement mechanism further comprises a first movement assembly and a second movement assembly, wherein the material falling assembly is in transmission connection with the first movement assembly, the first movement assembly can drive the material falling assembly to move relative to the template along a first direction when the first movement assembly acts, the material placing disc is installed on the workbench through the second movement assembly, and the second movement assembly can drive the material placing disc and the template to move relative to the material falling assembly along a second direction when the second movement assembly acts; the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the scattering direction of the abrasive.

[0012] Based on the above technical features, the abrasive is placed in the template hole with regular arrangement by the abrasive arrangement mechanism, the elastic rubber head in the abrasive transfer mechanism adheres the abrasive in the template hole, and the abrasive of the elastic rubber head is transferred to the abrasive surface of the abrasive tool, in the process, the elastic rubber head in the present application will deform on the surface of the abrasive tool when adhering to the force, and the surface of the abrasive tool to be arranged with abrasive is profiled, which can realize the ordered arrangement of abrasive on the plane abrasive tool, and also can realize the ordered arrangement of abrasive on the curved surface of the abrasive tool by rotating the abrasive tool, so that the abrasive adhered to the surface of the elastic rubber head can be accurately positioned on the surface of the abrasive tool with different shapes, and the universality is good, and the universal range is wide. Meanwhile, compared with the scheme of the prior art, the technical scheme of the present application avoids complex and delicate operation, reduces the operation difficulty in the production process, and has strong process repeatability and facilitates process production.

[0013] Preferably in the technical scheme, the four peripheral sidewalls of the material placing disc are provided with material blocking rings for blocking the movement of the abrasive materials out of the material placing disc; one side of the material placing disc is provided with a recovery groove, the opening of the recovery groove faces upward, and the groove bottom is lower than the disc surface of the material placing disc, the recovery groove is used for collecting the excessive abrasive materials scraped by the material scraping assembly.

[0014] Preferably in the technical scheme, the thickness of the template is 1 / 2-3 / 4 of the average particle size of the abrasive materials.

[0015] Based on the above technical features and the limitation of the thickness of the template, on the one hand, the material scraping assembly can not scrape the abrasive materials in the holes when scraping the materials above the template, and on the other hand, the elastic rubber head can be fully contacted and adhered during the abrasive material adhering and transferring step.

[0016] Preferably in the technical scheme, the elastic rubber head is a silicon rubber head integrally injection molded by nanoscale antistatic silicon rubber.

[0017] Based on the above technical features, the elastic rubber head has good resilience, so that the elastic rubber head can be deformed on the surface of the abrasive tool when adhering to force, and the surface of the abrasive tool to be arranged with abrasive materials can be profiled, the process repeatability is met, and the problem of low production efficiency caused by static electricity between the abrasive particles and the elastic rubber head can be avoided.

[0018] Preferably in the technical scheme, the surface of the elastic rubber head coated with the second adhesive is in a convex curved surface shape.

[0019] Based on the above technical features, the applicability of the elastic rubber head to different shaped abrasive tools can be further improved, the elastic rubber head can better disperse the pressure when extruding and pressing, the strength and stability of the entire elastic rubber head can be improved, and the service life of the elastic rubber head can be prolonged.

[0020] Preferably in the technical scheme, the clamping mechanism includes a base, a clamping assembly and a rotating assembly, the base is installed on the workbench, the clamping assembly is installed on the base and used for clamping the abrasive tool, and the rotating assembly is used for uniformly rotating the clamped abrasive tool around the axis of the clamping assembly.

[0021] Based on the above technical features, the clamping assembly clamps the abrasive tool, and the abrasive tool is uniformly rotated by the rotating assembly, so that the abrasive materials of the curved abrasive tool can be orderly arranged on the surface of the abrasive tool.

[0022] A preparation method of a planar or curved abrasive tool by using the above abrasive tool preparation device, including the following steps:

[0023] Step S1, uniformly coating a first adhesive on the abrasive surface of the abrasive tool, and uniformly coating a second adhesive on the surface of the elastic rubber head;

[0024] Step S2, place the template (322) horizontally on the material placing tray (321), and place the abrasive (9) in the regularly arranged holes of the template (322);

[0025] Step S3, move the elastic rubber head above the template placed in the material placing tray by the abrasive transferring mechanism, press the elastic rubber head on the top surface of the template, and adhere the abrasive in the holes of the template by the second adhesive on the elastic rubber head;

[0026] Step S4, move the elastic rubber head to the clamping mechanism by the abrasive transferring mechanism, and press the elastic rubber head on the abrasive surface of the abrasive tool, so that the first adhesive coated on the abrasive surface of the abrasive tool adheres the abrasive, thereby transferring the abrasive on the elastic rubber head to the abrasive surface of the abrasive tool, realizing the ordered arrangement of the abrasive on the surface of the abrasive tool.

[0027] Step S5, perform surface treatment process on the obtained abrasive tool (6) to obtain the superhard abrasive tool. BRIEF DESCRIPTION OF DRAWINGS

[0028] Figure 1 It is a structure schematic view of the abrasive tool preparation device in the embodiment of the application.

[0029] Figure 2 It is a preparation step schematic view of the planar abrasive tool in the embodiment of the application.

[0030] Figure 3 It is a preparation step schematic view of the curved surface abrasive tool in the embodiment of the application.

[0031] Figure 4 It is a structure schematic view of the elastic rubber head pressed on the curved surface abrasive tool in the embodiment of the application.

[0032] In the figure: 1, first adhesive coating mechanism; 2, second adhesive coating mechanism; 3, abrasive arrangement mechanism; 31, material falling assembly; 32, material placing table; 321, material placing tray; 322, template; 323, material scraping assembly; 324, recycling groove; 33, first movement assembly; 34, second movement assembly; 4, abrasive transferring mechanism; 41, rubber head assembly; 411, elastic rubber head; 412, fixed plate; 42, third movement assembly; 5, clamping mechanism; 51, base; 52, clamping assembly; 6, abrasive tool; 7, first adhesive; 8, second adhesive; 9, abrasive. DETAILED DESCRIPTION

[0033] With reference to the accompanying drawings, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by a person of ordinary skill in the art without creative effort belong to the scope of protection of the present application.

[0034] It should be noted that, in the description of the present application, the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0035] In addition, it should be understood that, for the convenience of description, the sizes of the various components shown in the drawings are not drawn in accordance with the actual proportional relationship.

[0036] It should be noted that similar reference numbers and letters represent similar items in the following drawings, and therefore, once an item is defined or described in one drawing, it will not need to be further specifically discussed and described in the description of the subsequent drawings.

[0037] As shown in Figures 1 to 4 The embodiments of the present application provide a grinding tool preparation device for a plane or a curved surface and a grinding tool preparation method thereof. The present application adheres abrasive grains 9 in the holes of a template 322 by using an elastic rubber head 411, and transfers the abrasive grains 9 adhered by the elastic rubber head 411 to the grinding surface of a grinding tool 6. According to the present application, the elastic rubber head 411 will deform according to the grinding surface of the grinding tool 6 when adhering to the force, and then the grinding surface of the grinding tool 6 is profiled, so as to realize the accurate positioning of the abrasive grains 9 on the grinding surface of the grinding tool 6. The present application can realize the ordered arrangement of the abrasive grains 9 on the plane grinding tool 6, and also can realize the ordered arrangement of the abrasive grains 9 on the curved surface grinding tool 6. The abrasive grains 9 adhered on the surface of the elastic rubber head 411 can be accurately positioned on the surface of the grinding tool 6 with different shapes. Therefore, the technical solution provided by the present application has wide application range and good universality, and compared with the negative pressure adsorption device, the present application has low manufacturing cost, simple and reliable operation, strong process repeatability, and is easy to realize large-scale preparation.

[0038] As shown in Figure 1 The present application provides a grinding tool preparation device for a plane or a curved surface, which comprises a first adhesive coating mechanism 1, a second adhesive coating mechanism 2, a workbench, an abrasive grain arrangement mechanism 3, a clamping mechanism 5 and an abrasive grain transfer mechanism 4.

[0039] Specifically, the abrasive arrangement mechanism 3 comprises a material dropping assembly 31 and a material placing table 32, the material placing table 32 comprises a material placing disc 321, a template 322 and a material scraping assembly 323, wherein the material dropping assembly 31 is arranged above the template 322, used for scattering the abrasive 9 on the top surface of the template 322, the template 322 is placed in the material placing disc 321, the material placing disc 321 is installed on the workbench, and the material placing disc 321 is used for carrying the template 322 and containing the abrasive 9 scattered by the material dropping assembly 31. A plurality of holes arranged in a regular manner are formed on the template 322, each hole is used for containing the abrasive 9, and the top of the abrasive 9 is higher than the top surface of the template 322 when the abrasive 9 is placed in the corresponding hole. The material scraping assembly 323 is arranged above the template 322, used for scraping the abrasive 9 scattered on the top surface of the template 322 into the holes of the template 322, and scraping the excessive abrasive 9 on the top surface of the template 322.

[0040] Further, the thickness of the template 322 is 1 / 2-3 / 4 of the average particle size of the abrasive 9. On the one hand, the thickness of the template 322 is not less than 1 / 2 of the average particle size of the abrasive 9, so that the material scraping assembly will not scrape the abrasive in the hole when scraping the material above the template. On the other hand, the thickness of the template 322 is less than 3 / 4 of the average particle size of the abrasive 9, so that the template 322 can be fully contacted and adhered by the elastic rubber head 411 during the abrasive 9 adhering and transferring step. In two existing patent technologies with publication numbers CN101786263B and CN105856088B, the abrasive particles are highly dependent on the arrangement hole plate or arrangement disc, that is, each particle size abrasive wheel needs an arrangement hole plate or arrangement disc corresponding to the hole diameter. The arrangement hole plate or arrangement disc needs to be precisely machined to the same hole diameter of each hole to ensure the ordered arrangement of the abrasive on the abrasive wheel. In the present application, the template 322 does not need to be precisely machined to the same hole diameter of each hole, thus avoiding complex fine operation and reducing the operation difficulty in the production process. The distribution accuracy of the abrasive 9 on the abrasive tool 6 depends on the distribution of the abrasive 9 on the template 322 (i.e. the uniform distribution of the abrasive in the holes of the template) and whether the adhesive is uniformly coated on the elastic rubber head 411 or the abrasive surface of the abrasive tool 6. Therefore, compared with the prior art, the present application has stronger applicability, can select abrasive particles in different particle size ranges, improves the utilization rate of abrasive particles and reduces the manufacturing cost.

[0041] In the present application, the abrasive 9 can be selected from simple abrasive particles, pre-brazed abrasive particles or pre-particle wrapped abrasive particle composite balls, and the abrasive particles can be selected from a group consisting of artificial diamond, natural diamond, polycrystalline diamond, cubic boron nitride, polycrystalline cubic boron nitride or a combination of the above materials.

[0042] Further, the abrasive arrangement mechanism 3 further comprises a first movement assembly 33 and a second movement assembly 34, the first movement assembly 33 is in transmission connection with the material dropping assembly 31, and the first movement assembly 33 can drive the material dropping assembly 31 to move along a first direction relative to the template 322 when the first movement assembly 33 is actuated, the material placing disc 321 is installed on the workbench through the second movement assembly 34, and the second movement assembly 34 can drive the material placing disc 321 and the template 322 to move along a second direction relative to the material dropping assembly 31 when the second movement assembly 34 is actuated, wherein the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the scattering direction of the abrasive 9. Through the first movement assembly 33 driving the material dropping assembly 31 to move along the first direction, and the second movement assembly 34 driving the material placing disc 321 to move along the second direction, the abrasive 9 is uniformly scattered on the template 322, and the rapid material dropping of the abrasive 9 is realized. Preferably, in an embodiment of the present application, the first movement assembly 33 is also installed on the workbench.

[0043] Further, a material blocking ring is arranged on the circumferential side wall of the material placing disc 321, the material blocking ring is used to block the abrasive 9 from moving out of the material placing disc 321, one side of the material placing disc 321 is provided with a recovery groove 324, the slot of the recovery groove 324 is upward, and the groove bottom is lower than the disc surface of the material placing disc 321, and the recovery groove 324 is used to collect the excessive abrasive 9 scraped by the material scraping assembly 323.

[0044] The clamping mechanism 5 comprises a base 51 and a clamping assembly 52, the base 51 is installed on the workbench, and the clamping assembly 52 is installed on the base 51 and is used to clamp the grinding tool 6, and the first adhesive coating mechanism 1 coats the first adhesive 7 which can glue the abrasive 9 on the grinding surface of the grinding tool 6, wherein the grinding surface is formed by a plane or a curved surface.

[0045] Further, the clamping mechanism 5 further comprises a rotating assembly matched with the rotation of the grinding tool 6, when the grinding tool is a rotary body grinding tool (the rotary body grinding tool is a tool specially used for machining rotary body parts, and such parts usually have a circular or nearly circular surface, and common rotary body parts include shafts, sleeves or discs, etc.), the clamping assembly 52 is used to clamp and fix the rotary body grinding tool, and the rotating assembly is used to make the clamped rotary body grinding tool rotate uniformly around the axis of the clamping assembly 52.

[0046] The abrasive transferring mechanism 4 comprises a rubber head assembly 41 and a third moving assembly 42, the rubber head assembly 41 comprises an elastic rubber head 411 and a fixing plate 412, the elastic rubber head 411 is arranged on the fixing plate 412 and is installed on the third moving assembly 42 through the fixing plate 412, the second adhesive coating mechanism 2 coats the second adhesive 8 which can adhere the abrasive 9 on the elastic rubber head 411, the viscosity of the second adhesive 8 is lower than that of the first adhesive 7, the third moving assembly 42 can drive the elastic rubber head 411 to move above the material placing table 32, and the elastic rubber head 411 is pressed on the top surface of the template 322 to adhere the abrasive 9 in the hole of the template 322, then the elastic rubber head 411 is moved to the clamping mechanism 5, the elastic rubber head 411 is pressed on the abrasive surface of the abrasive tool 6, and the adhered abrasive 9 is transferred and adhered to the abrasive surface of the abrasive tool 6.

[0047] In the present application, the elastic rubber head 411 is a silicon rubber head integrally injection molded by nano-level antistatic silicon rubber, so as to improve the resilience of the elastic rubber head 411, ensure that the elastic rubber head 411 deforms on the surface of the abrasive tool 6 when adhering to force, profile the surface of the abrasive tool 6 to be arranged with abrasive 9, meet the process repeatability, and avoid the problem of low production efficiency caused by static electricity between the abrasive and the elastic rubber head. In addition, the surface of the elastic rubber head 411 coated with the second adhesive 8 is in a convex curved shape, the Shore hardness of the elastic rubber head 411 is 25°-44°, so as to improve the applicability of the elastic rubber head 411 when used with different shaped abrasive tools 6, better disperse the pressure when extruding and pressing, improve the strength and stability of the entire elastic rubber head 411, and prolong the service life. The first adhesive 7 and the second adhesive 8 are both acrylate pressure-sensitive adhesives, the first adhesive 7 is prepared by mixing acrylate pressure-sensitive adhesive and organic solvent (acetone, ethyl acetate, etc.) in a volume ratio of 1:2-1:4, and the second adhesive 8 is prepared by mixing acrylate pressure-sensitive adhesive and organic solvent in a volume ratio of 1:4-1:15.

[0048] In the present application, the first moving assembly 33, the second moving assembly 34, the third moving assembly 42, the material falling assembly 31, the material scraping assembly 323, the clamping assembly 52, the rotating assembly and the like are connected to the control unit system, and the coordinated actions of the mechanical parts are controlled by the control unit system, so as to realize automatic control.

[0049] On the other hand, the present application also provides a method for preparing an abrasive tool for a plane or a curved surface, comprising the following steps:

[0050] Step S1, uniformly coating the first adhesive 7 on the abrasive surface of the abrasive tool 6, and uniformly coating the second adhesive 8 on the surface of the elastic rubber head 411;

[0051] Step S2, the template 322 is horizontally placed on the material placing tray 321, and the abrasive 9 is placed in the regularly arranged holes of the template 322;

[0052] Step S3, the elastic rubber head 411 is moved to the upper side of the template 322 placed in the material placing tray 321 by the abrasive transferring mechanism 4, the elastic rubber head 411 is pressed on the top surface of the template 322, and the abrasive 9 in the holes of the template 322 is adhered by the second adhesive 8 on the elastic rubber head 411;

[0053] Step S4, the elastic rubber head 411 is moved to the clamping mechanism 5 by the abrasive transferring mechanism 4, and the elastic rubber head 411 is pressed on the abrasive surface of the abrasive tool 6, so that the first adhesive 7 coated on the abrasive surface of the abrasive tool 6 adheres the abrasive 9, thereby transferring the abrasive 9 on the elastic rubber head 411 to the abrasive surface of the abrasive tool 6, and realizing the ordered arrangement of the abrasive 9 on the surface of the abrasive tool 6;

[0054] Step S5, the obtained abrasive tool 6 is subjected to a surface treatment process to obtain a superhard abrasive tool.

[0055] The method for preparing the abrasive tool for a plane or a curved surface will be described in detail through specific embodiments. Embodiment 1

[0056] As Figure 2 shown in the preparation steps of the plane-shaped abrasive tool, specifically, in this embodiment, a diamond dresser is taken as an example for preparation, the outer diameter of the selected diamond dresser is 108 mm, the height is 10 mm, the base body of the dresser (the base body is the basic part of the abrasive tool, which provides structural support) is prepared by machining 304 stainless steel, and the specific steps include the following steps:

[0057] Step S1, the first adhesive 7 is uniformly coated on the abrasive surface of the diamond dresser, the first adhesive 7 is prepared by mixing acrylate pressure-sensitive adhesive and ethyl acetate at a volume ratio of 1:2.5, and the second adhesive 8 is uniformly coated on the surface of the elastic rubber head 411, the second adhesive 8 is prepared by mixing acrylate pressure-sensitive adhesive and ethyl acetate at a volume ratio of 1:14;

[0058] Step S2, the template 322 is horizontally placed on the material placing tray 321, and the abrasive 9 is placed in the regularly arranged holes of the template 322;

[0059] Step S3, the elastic rubber head 411 is moved to the top of the template 322 placed in the material placing disc 321 by the abrasive transferring mechanism 4, the elastic rubber head 411 is pressed on the top surface of the template 322, and the abrasive 9 in the hole of the template 322 is adhered by the second adhesive 8 on the elastic rubber head 411; wherein the abrasive 9 is selected as diamond composite balls formed by uniformly wrapping nickel-based alloy solder on the periphery of diamond single crystal particles, the average particle size of the diamond composite ball is 850 μm, the average particle size of the diamond is 400 μm, the thickness of the nickel-based alloy solder layer is 450 μm, the particle size of the nickel-based alloy solder is 300 meshes, and the hole in the template 322 is a circular hole 3221 and arranged in an array.

[0060] Step S4, the elastic rubber head 411 is moved to the clamping mechanism 5 by the abrasive transferring mechanism 4, and the elastic rubber head 411 is pressed on the grinding surface of the diamond dresser, so that the first adhesive 7 coated on the grinding surface of the diamond dresser adheres the abrasive 9, thereby transferring the abrasive 9 on the elastic rubber head 411 to the grinding surface of the diamond dresser, and obtaining the diamond dresser with array-arranged diamond composite balls adhered.

[0061] Step S5, the diamond dresser is subjected to brazing treatment under vacuum condition at a temperature of 1010 ℃ for 5 min, and finally a brazed diamond dresser is obtained.

[0062] Figure 1 is a schematic diagram of the preparation steps of the curved surface-shaped tool, Figure 2 Figure 2 is a schematic diagram of the preparation steps of the curved surface-shaped tool, Figure 2 a is a sectional view of the base of the diamond dresser, Figure 2 b is a schematic diagram of the base surface of the diamond dresser coated with the first adhesive, Figure 2 c is a schematic diagram of the surface of the elastic rubber head coated with the second adhesive, Figure 2 d is a schematic diagram of the template after the diamond composite balls are arranged in an array, Figure 2 e is a schematic diagram of the elastic rubber head pressed on the top surface of the template to adhere the diamond composite balls in the circular hole, Figure 2 f is a schematic diagram of the elastic rubber head after adhering the diamond composite balls, Figure 2 g is a schematic diagram of the elastic rubber head transferring and adhering the diamond composite balls to the surface of the diamond dresser, Figure 2 h is a schematic diagram of the diamond composite balls arranged in an array on the surface of the diamond dresser. Example 2

[0063] As shown in Figure 1, the preparation steps of the curved surface-shaped tool include the following steps: Figure 3 In this embodiment, a diamond edge wheel is taken as an example for preparation, the outer diameter of the selected edge wheel is 125 mm, the height is 25 mm, the base of the edge wheel is machined from 45 steel, and the preparation steps include the following steps:

[0064] Step S1, evenly coat the first adhesive 7 on the grinding surface of the grinding wheel, the first adhesive 7 is prepared by acrylate pressure sensitive adhesive and ethyl acetate in a volume ratio of 1:3.5, and evenly coat the second adhesive 8 on the surface of the elastic rubber head 411, the second adhesive 8 is prepared by acrylate pressure sensitive adhesive and ethyl acetate in a volume ratio of 1:13;

[0065] Step S2, place the template 322 horizontally on the material placing disc 321, and place the abrasive 9 in the regularly arranged holes of the template 322;

[0066] Step S3, move the elastic rubber head 411 above the template 322 placed in the material placing disc 321 by the abrasive transferring mechanism 4, press the elastic rubber head 411 on the top surface of the template 322, and adhere the abrasive 9 in the holes of the template 322 by the second adhesive 8 on the elastic rubber head 411; wherein the abrasive 9 is selected from diamond single crystal particles, the average particle size of the diamond is 550 μm, and the holes in the template 322 are circular holes 3221 arranged in a circular pattern;

[0067] Step S4, move the elastic rubber head 411 to the clamping mechanism 5 by the abrasive transferring mechanism 4, and press the elastic rubber head 411 on the grinding surface of the grinding wheel, rotate the grinding wheel by the rotating assembly, and rotate the grinding wheel at a constant speed based on the center axis, so that the first adhesive 7 coated on the grinding surface of the grinding wheel adheres to the abrasive 9, thereby transferring the abrasive 9 on the elastic rubber head 411 to the grinding surface of the grinding wheel, and obtaining the grinding wheel with the circularly arranged diamond adhered thereon;

[0068] Step S5, evenly sprinkle a layer of nickel-based alloy solder with an average particle size of 450 μm on the surface of the steel base of the grinding wheel, and then perform brazing treatment under vacuum conditions at a temperature of 1010 ℃ for 5 min, to finally obtain the brazed grinding wheel.

[0069] Figure 1 is a schematic diagram of the structure of the abrasive transferring device according to the present application, Figure 3 Figure 2 is a schematic diagram of the structure of the abrasive transferring device according to the present application, Figure 3 a is a sectional view of the base of the grinding wheel, Figure 3 b is a schematic diagram of the structure of the base of the grinding wheel coated with the first adhesive, Figure 3 c is a schematic diagram of the structure of the surface of the elastic rubber head coated with the second adhesive, Figure 3 d is a schematic diagram of the structure of the template with regularly arranged diamond, Figure 3 e is a schematic diagram of the structure of the elastic rubber head pressed on the top surface of the template to adhere the diamond in the circular hole, Figure 3 f is a schematic diagram of the structure of the elastic rubber head after adhering the diamond, Figure 3 g is a schematic diagram of the structure of the elastic rubber head transferring and adhering the diamond to the surface of the base of the grinding wheel, Figure 4 h is a schematic diagram of the structure of the diamond arranged in order on the surface of the grinding wheel. Example 3

[0070] As ​ The structure schematic diagram of the elastic rubber head is pressed on the curved mold is shown, specifically, in the embodiment, the diamond grinding bowl is taken as an example for preparation, the outer diameter of the grinding bowl is 115 mm, the base body part of the grinding bowl is machined and prepared by using 45 steel, and specifically includes the following steps.

[0071] In step S1, the first adhesive 7 is uniformly coated on the grinding surface of the grinding bowl, the first adhesive 7 is prepared by using the volume ratio of 1:3 of the acrylate pressure sensitive adhesive and ethyl acetate, the second adhesive 8 is uniformly coated on the surface of the elastic rubber head 411, the second adhesive 8 is prepared by using the volume ratio of 1:12 of the acrylate pressure sensitive adhesive and ethyl acetate;

[0072] In step S2, the template 322 is horizontally placed on the material placing disc 321, and the abrasive 9 is placed in the regularly arranged holes of the template 322;

[0073] In step S3, the elastic rubber head 411 is moved to the upper side of the template 322 placed in the material placing disc 321 by the abrasive transferring mechanism 4, the elastic rubber head 411 is pressed on the top surface of the template 322, and the abrasive 9 in the holes of the template 322 is adhered by the second adhesive 8 on the elastic rubber head 411; wherein the abrasive 9 is selected as the diamond single crystal particle, the average particle size of the diamond is 550 μm, the holes in the template 322 are the circular holes 3221, and the circular arrangement pattern is adopted;

[0074] In step S4, the elastic rubber head 411 is moved to the clamping mechanism 5 by the abrasive transferring mechanism 4, and the elastic rubber head 411 is pressed on the grinding surface of the grinding bowl, so that the first adhesive 7 coated on the grinding surface of the grinding bowl is bonded to the abrasive 9, so as to transfer the abrasive 9 on the elastic rubber head 411 to the grinding surface of the grinding bowl, and the grinding bowl with the circumferentially arranged diamond is obtained.

[0075] In step S5, a layer of nickel-based alloy solder with an average particle size of 450 μm is uniformly scattered on the surface of the grinding wheel steel base body, and then the brazing treatment is carried out under the vacuum condition, the temperature is 1010 ℃, and the holding time is 5 min, and finally the brazing type grinding bowl is obtained.

[0076] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. An apparatus for the preparation of a grinding tool for a plane or curved surface, characterized in that, The abrasive tool preparation device comprises a workbench, an abrasive arrangement mechanism (3), a clamping mechanism (5) and an abrasive transferring mechanism (4), wherein, The abrasive arrangement mechanism (3) comprises a template (322) and a material placing disc (321) for bearing the template (322), the template (322) is provided with a plurality of regularly arranged holes, each of the holes is used for accommodating abrasive (9), and the top of the abrasive (9) is higher than the top surface of the template (322) when the abrasive (9) is placed in the corresponding hole; the material placing disc (321) is installed on the workbench; The clamping mechanism (5) is installed on the workbench and used for clamping and rotating an abrasive tool (6), the abrasive surface of the abrasive tool (6) is coated with a first adhesive (7) capable of gluing the abrasive (9), and the abrasive surface is formed by a plane or a curved surface; The abrasive transferring mechanism (4) comprises an elastic rubber head (411), the elastic rubber head (411) is coated with a second adhesive (8) capable of gluing the abrasive (9), and the viscosity of the second adhesive (8) is lower than that of the first adhesive (7); the abrasive transferring mechanism (4) can drive the elastic rubber head (411) to adhere to the abrasive (9) in the hole of the template (322), and transfer the abrasive (9) adhered by the elastic rubber head (411) to the abrasive surface of the abrasive tool (6).

2. The abrasive article manufacturing apparatus of claim 1, wherein, The abrasive arrangement mechanism (3) further comprises: A material falling assembly (31) is arranged above the template (322) and used for scattering the abrasive (9) on the top surface of the template (322); A material scraping assembly (323) is used for scraping the abrasive (9) scattered on the top surface of the template (322) into the hole of the template (322), and scraping the excessive abrasive (9) on the top surface of the template (322).

3. The abrasive article manufacturing apparatus of claim 2, wherein, The abrasive arrangement mechanism (3) further comprises a first movement assembly (33) and a second movement assembly (34), wherein, The material falling assembly (31) is in transmission connection with the first movement assembly (33), and the first movement assembly (33) can drive the material falling assembly (31) to move relative to the template (322) along a first direction when the first movement assembly (33) is actuated; The material placing disc (321) is installed on the workbench through the second movement assembly (34), and the second movement assembly (34) can drive the material placing disc (321) and the template (322) to move relative to the material falling assembly (31) along a second direction when the second movement assembly (34) is actuated; the first direction is perpendicular to the second direction, and both the first direction and the second direction are perpendicular to the scattering direction of the abrasive (9).

4. The abrasive article manufacturing apparatus of claim 3, wherein The material falling assembly (31) is installed on the workbench through the first movement assembly (33).

5. The apparatus of claim 2, wherein A material blocking ring is arranged on the circumferential sidewall of the material placing disc (321), and the material blocking ring is used for blocking the movement of the abrasive (9) to the outside of the material placing disc (321); One side of the material placing disc (321) is provided with a recovery groove (324), the groove opening of the recovery groove (324) faces upward, and the groove bottom is lower than the disc surface of the material placing disc (321); the recovery groove (324) is used for collecting the excessive abrasive (9) scraped by the material scraping assembly (323).

6. The abrasive article manufacturing apparatus of claim 2, wherein The thickness of the template (322) is 1 / 2-3 / 4 of the average particle size of the abrasive (9).

7. The abrasive article manufacturing apparatus of claim 1, wherein The elastic rubber head (411) is integrally injection molded by nano anti-static silica gel.

8. The abrasive article manufacturing apparatus of claim 7, wherein, The surface of the elastic rubber head (411) coated with the second adhesive (8) is convex and curved.

9. The abrasive article manufacturing apparatus of claim 1, wherein, The clamping mechanism (5) comprises a base (51), a clamping assembly (52) and a rotating assembly, The base (51) is installed on the workbench; The clamping assembly (52) is installed on the base (51) and used for clamping the grinding tool (6); The rotating assembly is used for rotating the clamped grinding tool (6) at a uniform speed around the axis of the clamping assembly (52).

10. A method for making a flat or curved abrasive tool using the tool making apparatus of any one of claims 1 to 9, characterized in that, The method comprises the following steps: Step S1, uniformly coating the first adhesive (7) on the grinding surface of the grinding tool (6) and uniformly coating the second adhesive (8) on the surface of the elastic rubber head (411); Step S2, placing the template (322) horizontally on the material placing disc (321) and placing the abrasive (9) in the regularly arranged holes of the template (322); Step S3, moving the elastic rubber head (411) above the template (322) placed in the material placing disc (321) by the abrasive transferring mechanism (4), pressing the elastic rubber head (411) on the top surface of the template (322), and adhering the abrasive (9) in the holes of the template (322) by the second adhesive (8) on the elastic rubber head (411); Step S4, moving the elastic rubber head (411) to the clamping mechanism (5) by the abrasive transferring mechanism (4) and pressing the elastic rubber head (411) on the grinding surface of the grinding tool (6), so that the first adhesive (7) coated on the grinding surface of the grinding tool (6) adheres to the abrasive (9), thereby transferring the abrasive (9) on the elastic rubber head (411) to the grinding surface of the grinding tool (6) and realizing the ordered arrangement of the abrasive (9) on the surface of the grinding tool (6); Step S5, performing surface treatment process on the obtained grinding tool (6) to obtain the superhard abrasive grinding tool.

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