Abrasive particle ordered arrangement device of curved surface brazing tool

Abstract

The utility model discloses a device for orderly arranging abrasive particles of a curved surface brazing tool, which relates to the technical field of brazing and comprises at least one curved surface template, the longitudinal section of each curved surface template is arc-shaped, the surface of one side of each curved surface template can be matched with at least part of the surface to be processed of a base body, each curved surface template is provided with a plurality of through holes, and the through holes are communicated with the curved surface template. The symmetric surface, perpendicular to the longitudinal section of each curved surface template, of each curved surface template is a first symmetric surface, the center line of each through hole is parallel to the first symmetric surface or coplanar with the first symmetric surface, each through hole can allow abrasive particles to pass through, and the surface, used for being matched with a base body, of each curved surface template is a working surface; the working surface of each curved surface template can be adhered to the to-be-processed surface, and the working surface of each curved surface template can be separated from the to-be-processed surface. The utility model has the advantages of simple structure, simple processing procedure, high production efficiency, low manufacturing cost and good processing quality.

Description

Technical Field

[0001] The utility model relates to the technical field of brazing, in particular to an abrasive grain orderly arrangement device for a curved surface brazing tool. Background Art

[0002] The ordered arrangement technology of super-hard abrasive grains refers to the orderly arrangement of abrasive grains on the tool surface through certain technical means. Compared with the random distribution of abrasive grains, the ordered arrangement can effectively reduce the working temperature of the processing area and improve the chip removal effect, thereby improving the service life of the tool, processing efficiency and the surface quality of the processed product. At the same time, it can also effectively reduce the amount of abrasive grains, thereby reducing production costs.

[0003] At present, the methods for orderly arrangement of abrasive grains mainly include dispensing method, negative pressure method, template method, magnetic absorption method, laser rapid prototyping method, etc. However, the current methods are generally only applicable to the orderly arrangement of superhard abrasive grains of flat brazing tools, and the orderly arrangement of superhard abrasive grains of curved brazing tools is still in the early exploration stage. For example, the Chinese patent with application number CN201410857328.5 discloses an orderly arrangement device for single-layer abrasive grains of special-shaped curved rotating body grinding tools, which includes multiple needle-type adsorption heads, and uses the axial movement of the needle-type adsorption heads to imitate the surface shape of the substrate, and adsorbs superhard abrasive grains under vacuum negative pressure through the needle-type adsorption heads, and then adheres the superhard abrasive grains to the surface of the substrate, thereby realizing the orderly arrangement of superhard abrasive grains on the curved surface tool. However, the equipment of this method is relatively complex and the cost is relatively high. Another example is a Chinese patent application numbered CN202110317664, which discloses a brazing method for orderly arranged single-layer and multi-layer diamond grinding wheels, the method comprising the following steps: (1) making an alloy sheet: making an alloy sheet using an alloy material, and processing a plurality of evenly distributed pits on the alloy sheet that are recessed toward the bottom surface of the alloy sheet; (2) spreading abrasive grains: spreading diamond abrasive grains on the top surface of the alloy sheet, scraping off the abrasive grains on the top surface and leaving the abrasive grains in the pits; (3) coating the grinding wheel substrate with glue: coating the outer cylindrical surface of the grinding wheel substrate with glue solution; (4) bonding the alloy sheet: bonding the top surface of the alloy sheet after the abrasive grains are spread in step (2) to the outer cylindrical surface of the grinding wheel substrate; (5) welding: brazing the pits of the alloy sheet bonded in step (4) point by point, so that the alloy sheet material at the pits is sintered and accumulated around the abrasive grains, and the abrasive grains are fixed to the grinding wheel substrate after cooling. This method is complex and inefficient; each processing requires consumption of alloy sheets, which is costly. Utility Model Content

[0004] The utility model aims to provide an abrasive orderly arrangement device for curved surface brazing tools to solve the problems existing in the above-mentioned prior art, with simple structure, simple processing steps, high production efficiency, low manufacturing cost and high processing quality.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides an orderly arrangement device of abrasive particles for a curved surface brazing tool, comprising at least one curved surface template, the longitudinal section of each curved surface template is arc-shaped, one side surface of each curved surface template can match at least part of the surface to be processed of a substrate, each curved surface template is provided with a plurality of through holes, the symmetry plane of each curved surface template perpendicular to the longitudinal section of each curved surface template is a first symmetry plane, the center line of each through hole is parallel to the first symmetry plane or coplanar with the first symmetry plane, each through hole can allow abrasive particles to pass through, the surface of each curved surface template used to match the substrate is a working surface, the working surface of each curved surface template can be bonded to the surface to be processed, and the working surface of the curved surface template can be separated from the surface to be processed.

[0007] Preferably, the working surfaces of a plurality of the curved templates can be spliced ​​together to form a combined surface, and the combined surface can match the surface to be processed of the substrate.

[0008] Preferably, the abrasive grain with the largest diameter among the abrasive grains is the largest abrasive grain, the abrasive grain with the smallest diameter among the abrasive grains is the smallest abrasive grain, the diameter of each through hole is larger than the diameter of the largest abrasive grain, and the diameter of each through hole is smaller than 2 times the diameter of the smallest abrasive grain.

[0009] Preferably, the thickness of each curved template is greater than or equal to the diameter of the largest abrasive particle.

[0010] Preferably, the longitudinal section of each of the curved templates is arc-shaped, and the curvature of each of the curved templates is less than or equal to 60°.

[0011] Compared with the prior art, the utility model has achieved the following technical effects:

[0012] The utility model provides an abrasive grain orderly arrangement device for curved surface brazing tools, comprising at least one curved surface template, one side surface of each curved surface template can match at least part of the surface to be processed of the substrate, each curved surface template is provided with a plurality of through holes, the symmetry plane of each curved surface template perpendicular to the longitudinal section of each curved surface template is the first symmetry plane, the center line of each through hole is parallel to the first symmetry plane or coplanar with the first symmetry plane, each through hole can allow abrasive grains to pass through, the working surface of each curved surface template can be bonded to the surface to be processed, and the working surface of the curved surface template can be separated from the surface to be processed. When the abrasive grains are orderly arranged, an adhesive layer is applied on the surface to be processed, and the surface of each curved surface template that can match the surface to be processed is attached to the adhesive layer; the abrasive grains pass through the through holes of each curved surface template and bond to the adhesive layer, and then each curved surface template is removed, so that the abrasive grains can be orderly arranged according to the setting mode of the through holes on the curved surface template. Since the orderly arrangement of abrasive particles can be achieved only by using the curved template, the structure is simple, the processing steps are simple, the production efficiency is high, and it is conducive to reducing the processing cost; and each curved template can be reused, which further reduces the cost. At the same time, since the center line of each through hole is parallel to the first symmetry plane, or the center line of each through hole is coplanar with the first symmetry plane, by removing the curved template along the first symmetry plane of the curved template in the direction away from the surface to be processed, it can be ensured that the inner wall of each through hole does not collide with or collide too much with the corresponding abrasive particles, thereby reducing or avoiding the abrasive particles from falling off the bonding layer, and ensuring the arrangement quality of the abrasive particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0014] Figure 1 A schematic diagram of the structure of the abrasive orderly arrangement device for the curved surface brazing tool provided in Example 1;

[0015] Figure 2 A schematic diagram of the overall process of the method for orderly arranging abrasive particles of a curved surface brazing tool provided in Example 2;

[0016] Figure 3 A schematic structural diagram of a curved surface brazing tool provided in Example 3;

[0017] Figure 4 A schematic structural diagram of a circular brazing tool provided in Example 4;

[0018] In the figure: 100, abrasive orderly arrangement device for curved surface brazing tool; 1, substrate; 101, surface to be processed; 2, bonding layer; 3, curved surface template; 301, working surface; 4, abrasive; 5, busbar; 6, brazing paste; 7, brazing alloy; 8, through hole. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] The utility model aims to provide an abrasive orderly arrangement device for curved surface brazing tools to solve the problems existing in the above-mentioned prior art, with simple structure, simple processing steps, high production efficiency, low manufacturing cost and good processing quality.

[0021] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0022] Example 1

[0023] like Figure 1-4As shown, this embodiment provides an abrasive grain orderly arrangement device 100 for a curved surface brazing tool, comprising at least one curved surface template 3, the longitudinal section of each curved surface template 3 is arc-shaped, and one side surface of each curved surface template 3 can match at least a portion of the surface to be processed 101 of the substrate 1, and each curved surface template 3 is provided with a plurality of through holes 8, and the symmetry plane of each curved surface template 3 perpendicular to the longitudinal section of each curved surface template 3 is the first symmetry plane, and the center line of each through hole 8 is parallel to the first symmetry plane or coplanar with the first symmetry plane, and each through hole 8 can allow abrasive grains 4 to pass through, and the surface of each curved surface template 3 used to match with the substrate 1 is the working surface 301, and the working surface 301 of each curved surface template 3 can be bonded to the surface to be processed 101, and the working surface 301 of the curved surface template 3 can be detached from the surface to be processed 101. When the abrasive particles 4 are arranged in an orderly manner, the adhesive layer 2 is applied on the surface 101 to be processed, and the surface of each curved template 3 that can match the surface 101 to be processed is attached to the adhesive layer 2; the abrasive particles 4 pass through the through holes 8 of each curved template 3 and adhere to the adhesive layer 2, and then each curved template 3 is removed, so that the abrasive particles 4 can be arranged in an orderly manner according to the setting of the through holes 8 on the curved template 3. Since the orderly arrangement of the abrasive particles 4 can be achieved only by the curved template 3, the structure is simple, the processing process is simple, the production efficiency is high, and it is conducive to reducing the processing cost; and each curved template 3 can be reused, which further reduces the processing cost. At the same time, since the center lines of each through hole 8 are parallel to the first symmetry plane, or the center lines of each through hole 8 are coplanar with the first symmetry plane, by removing the curved template 3 along the first symmetry plane of the curved template 3 in a direction away from the surface to be processed 101, it can be ensured that the inner wall of each through hole 8 does not collide or collide excessively with the corresponding abrasive particles 4, thereby reducing or avoiding the abrasive particles 4 from falling off the adhesive layer 2, thereby ensuring the arrangement quality of the abrasive particles 4.

[0024] It should be noted that when a through hole 8 is set at the middle position in the length direction of the curved template 3, the center lines of all the through holes 8 at this position are coplanar with the first symmetry plane; the center lines of the through holes 8 set at other positions of the curved template 3 are parallel to the first symmetry plane.

[0025] As a preferred embodiment, the cross section of each curved template 3 is rectangular.

[0026] In this embodiment, the working surfaces 301 of the plurality of curved templates 3 can be spliced ​​together to form a combined surface, and the combined surface can match the surface to be processed 101 of the substrate 1. The number of curved templates 3 can be set according to the curvature of the curved surface of the substrate 1 and the size of the abrasive particles 4; the diameter, position and number of each through hole 8 can be designed and processed according to actual needs.

[0027] In this embodiment, the abrasive grain 4 with the largest diameter among the abrasive grains 4 is the largest abrasive grain 4, the abrasive grain 4 with the smallest diameter among the abrasive grains 4 is the smallest abrasive grain 4, the diameter of each through hole 8 is larger than the diameter of the largest abrasive grain 4, and the diameter of each through hole 8 is smaller than twice the diameter of the smallest abrasive grain 4. The size of the through hole 8 is set so that each through hole 8 can only allow one abrasive grain 4 to enter through its inlet at a time, ensuring that only one abrasive grain 4 in each through hole 8 can be bonded to the bonding layer 2.

[0028] In this embodiment, the thickness of each curved template 3 is greater than or equal to the diameter of the largest abrasive 4, so as to prevent the abrasive 4 from being exposed on the outer wall of the corresponding curved template 3 and to prevent the operation or other external factors from interfering with the displacement of the bonded abrasive 4, thereby ensuring the processing quality.

[0029] In this embodiment, the longitudinal section of each curved template 3 is in an arc shape, and the curvature of each curved template 3 is less than or equal to 60°.

[0030] Example 2

[0031] This embodiment provides a method for orderly arranging abrasive particles of a curved surface brazing tool based on the device 100 for orderly arranging abrasive particles of a curved surface brazing tool in Embodiment 1, comprising the following steps:

[0032] S1, applying an adhesive layer 2 on the surface 101 to be processed of the substrate 1;

[0033] S2, attaching the working surface 301 of each curved template 3 to the surface of the adhesive layer 2 away from the surface to be processed 101;

[0034] S3, make the abrasive 4 enter the corresponding through hole 8 from one end of each through hole 8 of each curved surface template 3 away from the bonding layer 2, and make one abrasive 4 entering each through hole 8 bond with the surface of the bonding layer 2 on one side away from the surface to be processed 101, remove each curved surface template 3 from the bonding layer 2, preferably remove the curved surface template 3 along the busbar 5 of each curved surface template 3, and the busbar 5 is coplanar with the first symmetry plane.

[0035] In this embodiment, the following steps are also included:

[0036] S4, drying and curing the substrate 1 bonded with the abrasive grains 4; the drying and curing is preferably carried out in an oven;

[0037] S5, applying solder paste 6 on the exposed surface of the dried and solidified abrasive grains 4, and drying the substrate 1 coated with the solder paste 6 and bonded with the abrasive grains 4; the drying process is preferably carried out in an oven;

[0038] S6, brazing the substrate 1 bonded with the abrasive grains 4. The brazing process is preferably carried out in a vacuum brazing furnace, so that the brazing paste 6 forms a brazing alloy 7 to connect the abrasive grains 4 and the substrate 1, and obtain a finished brazing tool.

[0039] In this embodiment, S1 also includes: before applying the adhesive layer 2 to the surface to be processed 101, cleaning and drying the substrate 1. As a preferred embodiment, the substrate 1 is placed in a container containing alcohol, ultrasonically cleaned in an ultrasonic device, and the cleaned substrate 1 is completely dried in an oven.

[0040] In this embodiment, S3 includes: the method of making the abrasive grains 4 enter each through hole 8 and adhere to the bonding layer 2 includes: spreading abrasive grains 4 to one end of each curved template 3 away from the bonding layer 2, so that at least one abrasive grain 4 enters each through hole 8; rotating the base 1 and causing the abrasive grains 4 on each curved template 3 that are not adhered to the bonding layer 2 to fall off. As a preferred embodiment, when the abrasive grains 4 are spread on each curved template 3, the inlet end of the through hole 8 is facing upward, and the abrasive grains 4 are spread from the top of the corresponding curved template 3; thereafter, the base 1 is rotated and the unadhered abrasive grains 4 are shaken off.

[0041] In this embodiment, the adhesive layer 2 is a pressure-sensitive adhesive, which has the property of leaving no adhesive residue after the adhesive is peeled off, thereby reducing the difficulty of cleaning the curved template 3; the abrasive 4 is a superhard abrasive 4, preferably at least one of natural diamond, artificial diamond, cubic boron nitride, polycrystalline diamond, polycrystalline cubic boron nitride, cemented carbide, silicon carbide, and aluminum oxide, and the particle size range of the abrasive 4 is 0.1 mm to 1.0 mm.

[0042] In this embodiment, the curved surface template 3 is made of stainless steel and is formed by opening a through hole 8 on the curved surface metal.

[0043] In this embodiment, the solder paste 6 is a mixture of solder and epoxy resin, and the solder is one of silver-based, copper-based, and nickel-based solder.

[0044] Example 3

[0045] This embodiment provides a method for orderly arranging abrasive particles of a curved surface brazing tool based on the device 100 for orderly arranging abrasive particles of a curved surface brazing tool in Embodiment 1, comprising the following steps:

[0046] The substrate 1 is placed in a container containing alcohol, and is ultrasonically cleaned in an ultrasonic device. The cleaned substrate 1 is completely dried in an oven, and then a pressure-sensitive adhesive is applied to the surface of the dried substrate 1.

[0047] Two curved templates 3 with a thickness of 1 mm and an arc of 30° are attached to the surface of a substrate 1 with a pressure-sensitive adhesive, and diamond single crystals with a diameter of 710 to 840 μm are sprinkled on the curved template 3. The diamond single crystals are a kind of abrasive 4, and then the substrate 1 is rotated to shake off the unbonded diamond single crystals. The curved template 3 is then removed along the direction of the busbar 5, and the sample is placed in an oven at 60°C for 20 minutes for drying and curing.

[0048] The Cu-Sn-Ti solder paste 6 is brushed on the surface of the solidified diamond single crystal, and then placed in an oven at 50° C. for 30 minutes for drying.

[0049] The sample was placed in a vacuum brazing furnace with a vacuum degree of ≤1×10 -3 MPa conditions, 960 ° C for 10 min, and brazing. The diamond single crystal and the substrate 1 are connected by forming a brazing alloy 7 to obtain a curved brazing tool. Figure 3 shown.

[0050] Example 4

[0051] This embodiment provides a method for orderly arranging abrasive particles of a curved surface brazing tool based on the device 100 for orderly arranging abrasive particles of a curved surface brazing tool in Embodiment 1, comprising the following steps:

[0052] The annular substrate 1 is placed in a container containing alcohol, and is ultrasonically cleaned in an ultrasonic device. The cleaned substrate 1 is completely dried in an oven, and then a pressure-sensitive adhesive is applied to the surface of the dried substrate 1.

[0053] Six curved templates 3 with a thickness of 0.8 mm and an arc of 60° are attached to the surface of a circular base 1 with a pressure-sensitive adhesive, and diamond single crystals with a diameter of 500 to 600 μm are sprinkled on the curved template 3. Then, the circular base 1 is rotated to shake off the unbonded diamond single crystals, and then the curved template 3 is removed along the direction of the busbar 5. The sample is placed in an oven and kept at 60°C for 20 minutes for drying and curing.

[0054] The Cu-Sn-Ti solder paste 6 is brushed on the surface of the solidified diamond single crystal, and then placed in an oven at 50° C. for 30 minutes for drying.

[0055] The sample was placed in a vacuum brazing furnace with a vacuum degree of ≤1×10 -3 MPa conditions, 960 ° C for 10 min, and brazing. The diamond single crystal and the substrate 1 are connected by forming a brazing alloy 7 to obtain a circular brazing tool. Figure 4 shown.

[0056] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. An abrasive grain orderly arrangement device for curved surface brazing tools, characterized in that: It comprises at least one curved template, the longitudinal section of each curved template is arc-shaped, one side surface of each curved template can match with at least part of the surface to be processed of the substrate, each curved template is provided with a plurality of through holes, the symmetry plane of each curved template perpendicular to the longitudinal section of each curved template is the first symmetry plane, the center line of each through hole is parallel to the first symmetry plane or coplanar with the first symmetry plane, each through hole can allow abrasive particles to pass through, the surface of each curved template used to match with the substrate is the working surface, the working surface of each curved template can be bonded to the surface to be processed, and the working surface of the curved template can be detached from the surface to be processed.

2. The abrasive grain orderly arrangement device for curved surface brazing tools according to claim 1, characterized in that: The working surfaces of the plurality of curved templates can be joined together to form a combined surface, and the combined surface can match the surface to be processed of the substrate.

3. The abrasive grain orderly arrangement device for curved surface brazing tools according to claim 1, characterized in that: The abrasive grain with the largest diameter among the abrasive grains is the largest abrasive grain, the abrasive grain with the smallest diameter among the abrasive grains is the smallest abrasive grain, the diameter of each through hole is larger than the diameter of the largest abrasive grain, and the diameter of each through hole is smaller than 2 times the diameter of the smallest abrasive grain.

4. The abrasive grain orderly arrangement device for curved surface brazing tools according to claim 3, characterized in that: The thickness of each curved surface template is greater than or equal to the diameter of the largest abrasive particle.

5. The abrasive grain orderly arrangement device for curved surface brazing tools according to claim 1, characterized in that: The longitudinal section of each curved template is in an arc shape, and the curvature of each curved template is less than or equal to 60°.

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