CN115654029B - Universal coupling end face tooth, manufacturing method thereof and universal coupling - Google Patents
Universal coupling end face tooth, manufacturing method thereof and universal coupling Download PDFInfo
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- CN115654029B CN115654029B CN202211343347.7A CN202211343347A CN115654029B CN 115654029 B CN115654029 B CN 115654029B CN 202211343347 A CN202211343347 A CN 202211343347A CN 115654029 B CN115654029 B CN 115654029B
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- 238000010168 coupling process Methods 0.000 title claims abstract description 57
- 238000005859 coupling reaction Methods 0.000 title claims abstract description 57
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 13
- 239000000843 powder Substances 0.000 claims abstract description 63
- 239000004677 Nylon Substances 0.000 claims abstract description 49
- 229920001778 nylon Polymers 0.000 claims abstract description 49
- 239000011159 matrix material Substances 0.000 claims abstract description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 49
- 238000005507 spraying Methods 0.000 claims description 22
- 238000005498 polishing Methods 0.000 claims description 20
- 239000007921 spray Substances 0.000 claims description 19
- 239000002253 acid Substances 0.000 claims description 12
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- 229910000420 cerium oxide Inorganic materials 0.000 claims description 9
- BMMGVYCKOGBVEV-UHFFFAOYSA-N oxo(oxoceriooxy)cerium Chemical compound [Ce]=O.O=[Ce]=O BMMGVYCKOGBVEV-UHFFFAOYSA-N 0.000 claims description 9
- 229920000642 polymer Polymers 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 9
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 8
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 8
- 229920002120 photoresistant polymer Polymers 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 238000010306 acid treatment Methods 0.000 claims description 6
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- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 4
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 229920000571 Nylon 11 Polymers 0.000 description 2
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
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- XHCLAFWTIXFWPH-UHFFFAOYSA-N [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[V+5].[V+5] XHCLAFWTIXFWPH-UHFFFAOYSA-N 0.000 description 1
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a universal coupling end face tooth, a manufacturing method thereof and a universal coupling, and belongs to the technical field of couplings. The end face teeth of the universal coupler comprise a plurality of teeth positioned in the same plane and a matrix for bearing the teeth, the distance between adjacent teeth is 3-5mm, a wear-resistant layer is formed at the root of each tooth, the thickness of the wear-resistant layer is 0.01-0.02mm, and the wear-resistant layer is made of nylon ultrafine powder. The invention forms a wear-resistant layer at the root of the tooth, wherein the thickness of the wear-resistant layer is 0.01-0.02mm, and the wear-resistant layer is made of nylon ultrafine powder; the impact resistance, abrasion resistance and corrosion resistance of the surface material of the end face teeth are improved, fatigue crack or fracture of the end face teeth is reduced, and the service life of the end face teeth is prolonged.
Description
Technical Field
The invention belongs to the technical field of couplings, and particularly relates to a universal coupling end face tooth, a manufacturing method thereof and a universal coupling.
Background
The end face tooth structure of the universal coupling is similar to the connection of the flange, but tooth shapes are added on the end face of the flange, in the torque transmission process, the stressed part is completely different from the flange, and the two parts connected by the end face tooth of the universal coupling are used for transmitting torque by the tooth shapes of the end face of the universal coupling instead of through the tension bolts. The connecting bolt is not subjected to shearing force under normal working conditions when the end face teeth of the universal coupler are connected, and is only subjected to axial tension, the transmitted torque is shared by a plurality of teeth, the stress is very uniform, and the stress concentration is avoided, so that the bolt is not easy to fail.
However, the problems of fatigue crack and fracture easily occur at the joint of the end face teeth due to the high ambient temperature of the rolling line in the metallurgical steel mill, large water vapor and large torque load of the universal coupling. In order to solve the above-mentioned problems, the following processing methods can be used for reference at present:
1) Improvement of the material of the tooth: for example, chinese patent CN201310604577.9 discloses a wear-resistant automotive transmission gear, which comprises the following components in mass percent: 0.17 to 0.20 percent of C, 3.2 to 4.0 percent of Mn, 0.045 to 0.055 percent of S, 0.04 to 0.05 percent of P and the balance of iron.
2) Tooth-shaped structure: chinese patent CN200880117893.0, for example, discloses a gear that uses gyro grinding to smooth the tooth surface.
3) Surface heat treatment of teeth: for example, chinese patent No. cn202011086127. X discloses a method of manufacturing a wear-resistant gear comprising the steps of: s1, preparing raw materials: the high carbon steel is used as a gear raw material main body, and the outer side of the gear raw material main body is permeated with carbon element by a vapor deposition method.
4) The tooth surface is equipped with one deck wearing layer: for example, chinese patent CN201410134999.9 discloses a wear-resistant cast gear, which is composed of a gear body, teeth and a shaft hole, wherein the surface of the teeth is provided with a wear-resistant layer; cn201711090668.X discloses a corrosion resistant coating for gear part surfaces comprising the following materials in parts by weight: 50 to 53 parts by mass of titanium carbonitride, 10 to 12 parts by mass of silicon dioxide, 4 to 6 parts by mass of cobalt oxide, 2 to 4 parts by mass of vanadium oxide and 2 to 4 parts by mass of zinc oxide; CN201710010830.6 discloses a metal surface nylon powder spraying process, which comprises the following steps: s1: selecting metal with melting point higher than 250 ℃ as a matrix, and S2: vulcanizing nylon powder, S3: conveying the substrate in the step S1 to a position of a powder spraying device by using a conveying belt, spraying the vulcanized nylon powder in the step S2 onto the outer surface of the substrate in the step S1 by using a spray gun on the powder spraying device, wherein the gun cleaning pressure of the spray gun is 0.6-0.8MPa, and S4: and (3) conveying the matrix in the step (S3) to the inside of a curing chamber by using a conveying belt, wherein the temperature of the inside of the curing chamber is set to be 200-240 ℃, the heating time of the matrix in the step (S3) in the curing chamber is 9min30S to 10min30S, and then stopping heating, so that the nylon powder on the matrix is cooled and cured, and a nylon powder layer is obtained.
The technology disclosed in the above patent can better solve the problem of crack generation caused by gear fatigue, but related processing technology is not disclosed at present for end face teeth of a universal coupling.
Disclosure of Invention
1. Problems to be solved
Aiming at the problem that the end face teeth of the universal coupler are easy to generate fatigue cracks to cause fracture in the prior art, the invention provides the end face teeth of the universal coupler and a manufacturing method thereof, which improve the performance of the end face teeth of the universal coupler and prolong the service life.
It is another object of the present invention to provide a universal joint having the above end teeth.
2. Technical proposal
In order to solve the problems, the technical scheme adopted by the invention is as follows:
the end face teeth of the universal coupler comprise a plurality of teeth positioned in the same plane and a matrix for bearing the teeth, the distance between adjacent teeth is 3-5mm, a wear-resistant layer is formed on the teeth and the roots of the teeth, the thickness of the wear-resistant layer is 0.01-0.02mm, and the wear-resistant layer is made of nylon ultrafine powder.
In one possible embodiment of the present invention, the nylon ultra-fine powder is RILSAN fine powder or nylon 11 ultra-fine powder.
In one possible embodiment of the present invention, the nylon micropowder is added with silica powder in an amount of 0.015 to 0.05% by weight. In the process, the inventor obtains through a large number of experimental analyses, and on one hand, the silicon dioxide powder can play a good role in supporting a framework during spraying; on the other hand, through the microstructure of the tooth end face, the silicon dioxide powder is found to be easy to fill in a network structure formed by a high polymer in nylon (Si and H form hydrogen bonds), even if teeth are meshed and rotate at a high speed, the impact resistance and the anti-grinding capability of the wear-resistant layer are improved.
In one possible embodiment of the present invention, the nylon micropowder is subjected to an activation and incubation pretreatment at a treatment temperature of 50-70 ℃. The pretreated and activated silicon dioxide powder has stronger activity, is easier to be filled in a network formed by a high molecular polymer in nylon, so that the wear-resistant layer is more compact, the impact resistance and the scouring resistance of the wear-resistant layer are improved, and the corrosion resistance (the corrosion of water vapor) is improved.
The invention also provides a manufacturing method of the end face tooth of the universal coupler, which comprises the following steps:
s101, carrying out acid treatment on end face teeth of a universal coupling for 5-10min, and then washing and drying;
step S102, carrying out activation heat preservation pretreatment on nylon ultrafine powder, wherein the treatment temperature is 50-70 ℃, and the nylon ultrafine powder is added with silicon dioxide powder, and the addition amount is 0.015-0.05% of the weight;
step S103, spraying the nylon powder processed in the step S102 onto the outer surface of the end face teeth of the universal coupling in the step S101, wherein the pressure of a spray gun is 0.5-0.7MPa;
and step S104, curing and heat-preserving the sprayed end face teeth of the universal coupling, wherein the heat-preserving temperature is 200-250 ℃.
The acid in the step S101 is sulfuric acid, hydrochloric acid or nitric acid, and the mass fraction of the acid is 0.5-0.8%, so that oil stains on the surface can be removed, and the roughness of the surface can be improved.
And step S103, the plane of the end face teeth of the universal coupling and the horizontal plane form a certain inclined angle, the plane is paved by adopting photoresist, the teeth and the tooth roots are exposed by adopting corrosive agents, and then spraying is carried out by adopting a spray gun and the plane of the end face teeth of the universal coupling.
In one possible embodiment of the invention, the corrosion inhibitor consists of an organic amine compound, an anticorrosive agent and an organic solvent.
In one possible embodiment of the invention, the angle of inclination is 30-60 °, preferably 45 °.
The invention also provides a universal coupling with the end face teeth of the universal coupling.
3. Advantageous effects
Compared with the prior art, the invention has the beneficial effects that:
the invention forms a wear-resistant layer at the root of the tooth, wherein the thickness of the wear-resistant layer is 0.01-0.02mm, and the wear-resistant layer is made of nylon ultrafine powder; the impact resistance, abrasion resistance and corrosion resistance of the surface material of the end face teeth are improved, fatigue crack or fracture of the end face teeth is reduced, and the service life of the end face teeth is prolonged.
Drawings
The technical solution of the present invention will be described in further detail below with reference to the accompanying drawings and examples, but it should be understood that these drawings are designed for the purpose of illustration only and thus are not limiting the scope of the present invention. Moreover, unless specifically indicated otherwise, the drawings are intended to conceptually illustrate the structural configurations described herein and are not necessarily drawn to scale.
Fig. 1 is a schematic view of the structure of end face teeth of the universal joint of the present invention.
Reference numerals illustrate:
10. end face teeth; 11. teeth; 12. a base; 13. and a wear-resistant layer.
Detailed Description
The following detailed description of exemplary embodiments of the invention refers to the accompanying drawings, which form a part hereof, and in which are shown by way of illustration exemplary embodiments in which the invention may be practiced. While these exemplary embodiments are described in sufficient detail to enable those skilled in the art to practice the invention, it is to be understood that other embodiments may be realized and that various changes to the invention may be made without departing from the spirit and scope of the invention. The following more detailed description of the embodiments of the invention is not intended to limit the scope of the invention, as claimed, but is merely illustrative and not limiting of the invention's features and characteristics in order to set forth the best mode of carrying out the invention and to sufficiently enable those skilled in the art to practice the invention. Accordingly, the scope of the invention is limited only by the attached claims.
The following detailed description and example embodiments of the invention may be better understood when read in conjunction with the accompanying drawings, in which elements and features of the invention are identified by reference numerals.
As shown in fig. 1, the end face tooth 10 of the universal coupling in this embodiment includes a plurality of teeth 11 located in the same plane and a base 12 for carrying the teeth 11, the spacing between adjacent teeth 11 is 3-5mm, preferably 3mm, a wear-resistant layer 13 is formed on the teeth 11 and the root thereof, the thickness of the wear-resistant layer 13 is 0.01-0.02mm, preferably 0.01mm, and the material of the wear-resistant layer 13 is nylon ultrafine powder. The nylon superfine powder is RILSAN fine powder or nylon 11 superfine powder. RILSAN powder is a product of ARKEMA (original ATOFINA) in france and is commercially available.
In this embodiment, in order to increase the abrasion resistance of the abrasion resistant layer 13, a silica powder having a particle diameter of about 100 mesh is added to the nylon ultrafine powder in an amount of 0.015 to 0.05%, preferably 0.02% of the total weight of the nylon ultrafine powder. In the process, the inventor obtains through a large number of experimental analyses, and on one hand, the silicon dioxide powder can play a good role in supporting a framework during spraying; on the other hand, it was found that the silica powder was easily filled in the network structure formed by the polymer in nylon (Si and H form hydrogen bonds) by the microstructure of the tooth end face, even if the teeth 11 were engaged and rotated at high speed, the impact resistance and the anti-chipping ability of the wear-resistant layer 13 were improved.
In contrast, in the actual production and use process, the inventors conducted the test under the same conditions for the abrasion-resistant layer 13 to which no silica powder was added, and the service life was shortened by about 10%.
Furthermore, the inventors have surprisingly found that the above-mentioned nylon micropowder is subjected to an activation and heat-preservation pretreatment at a treatment temperature of 50-70 c, preferably at 60 c, resulting in a flatter and glossy surface of the wear-resistant layer 13. Analysis shows that the activated silica powder has stronger activity, is easier to fill in a network formed by high molecular polymers in nylon, so that the wear-resistant layer is more compact, is beneficial to improving the impact resistance and the scouring resistance of the wear-resistant layer 13, and improves the corrosion resistance (the corrosion of water vapor).
The invention also provides a manufacturing method of the end face tooth 10 of the universal coupling, which comprises the following steps:
step S101, firstly adopting a polyurethane polishing pad for treatment, and spraying polishing liquid (the main component is cerium oxide powder) while polishing, and fully utilizing the grinding action between the cerium oxide powder and the teeth 11 to ensure that the surface flatness reaches the micron level; then carrying out acid treatment on the end face teeth 10 of the universal coupling, wherein the acid is sulfuric acid, hydrochloric acid or nitric acid, the mass fraction of the acid is 0.5-0.8%, the treatment time is 5-10min by adopting a brushing and soaking mode, and then washing and drying are carried out;
specifically, the softness of the polyurethane polishing pad is fully utilized, and grooves can be formed on the surface of the polyurethane polishing pad in advance, so that a plurality of grooves are formed on the surface of the polyurethane polishing pad, the width of the grooves is consistent with or even smaller than the distance between adjacent teeth 11, and the polyurethane polishing pad can polish the surfaces of the teeth 11 to the design requirement.
Step S102, carrying out activation heat preservation pretreatment on nylon ultrafine powder, wherein the treatment temperature is 50-70 ℃, and the nylon ultrafine powder is added with silicon dioxide powder, and the addition amount is 0.015-0.05% of the weight; preferably 0.02%, the silica powder can play a good role in framework support; in addition, through the microstructure of the tooth end surfaces, it is found that the silica powder is easily filled in the high polymer forming network structure in nylon, even if the teeth 11 are engaged and rotated at a high speed, the impact resistance and the anti-grinding ability of the wear-resistant layer 13 are improved.
Step S103, spraying the nylon powder processed in the step S102 onto the outer surface of the end face teeth 10 of the universal coupling in the step S101, wherein the pressure of a spray gun is 0.5-0.7MPa; the pressure of the spray gun is preferably 0.6MPa, and the spray gun is a commercially available product, and will not be described here again.
In this embodiment, the plane of the end face tooth 10 of the universal coupling forms a certain inclination angle with the horizontal plane, the inclination angle is 30-60 degrees, the preferred angle is 45 degrees, the photoresist is used for laying, the tooth 11 and the tooth root are exposed by using an etchant (composed of an organic amine compound, an anticorrosive agent and an organic solvent, for example CN103513523 a), and then spraying is performed by using a spray gun perpendicular to the plane of the end face tooth 10 of the universal coupling.
Step S104, curing and heat-preserving the sprayed end face teeth 10 of the universal coupling, wherein the heat-preserving temperature is 200-250 ℃, the preferable temperature is 220 ℃, the adopted heat-preserving equipment is a curing oven, and the photoresist can be eliminated at the temperature.
The end face tooth 10 of the universal coupling, which is obtained by the method, is applied to the universal coupling, and the thickness of the wear-resistant layer is 0.01-0.02mm, so that the universal coupling has better wear resistance.
Example 1
The manufacturing method of the universal coupling end face tooth 10 of the embodiment comprises the following steps:
step S101, firstly adopting a polyurethane polishing pad for treatment, and spraying polishing liquid (the main component is cerium oxide powder) while polishing, and fully utilizing the grinding action between the cerium oxide powder and the teeth 11 to ensure that the surface flatness reaches the micron level; then carrying out acid treatment on the end face teeth 10 of the universal coupling, wherein the acid is sulfuric acid, the mass fraction of the acid is 0.5%, the treatment time is 5min by adopting a brushing and soaking mode, and then washing and drying are carried out;
step S102, performing activation heat preservation pretreatment on nylon ultrafine powder, wherein the treatment temperature is 70 ℃, the nylon ultrafine powder is added with silicon dioxide powder, the addition amount is 0.015% of the weight, and the silicon dioxide powder can play a good role in supporting a framework; in addition, by the microstructure of the tooth end face, it was found that the silica powder and the polymer in nylon form a network structure even if the teeth 11 are engaged and rotated at a high speed, the impact resistance and the anti-chipping ability of the wear-resistant layer 13 are improved.
Step S103, spraying the nylon powder processed in step S102 on the outer surface of the end face teeth 10 of the universal coupling in step S101, wherein the pressure of a spray gun is 0.5MPa, and the spray gun is a commercial product and is not repeated here.
In this embodiment, the plane of the end face tooth 10 of the universal coupling forms a certain inclination angle with the horizontal plane, the inclination angle is 30 °, the photoresist is used for laying, the tooth 11 and the tooth root are exposed by using an etchant (composed of an organic amine compound, an anticorrosive agent and an organic solvent, for example CN103513523 a), and then spraying is performed perpendicular to the plane of the end face tooth 10 of the universal coupling by using a spray gun.
And step S104, curing and heat-preserving the sprayed end face teeth 10 of the universal coupling, wherein the heat-preserving temperature is 220 ℃, and the adopted heat-preserving equipment is a curing oven.
Example 2
The manufacturing method of the universal coupling end face tooth 10 of the embodiment comprises the following steps:
step S101, firstly adopting a polyurethane polishing pad for treatment, and spraying polishing liquid (the main component is cerium oxide powder) while polishing, and fully utilizing the grinding action between the cerium oxide powder and the teeth 11 to ensure that the surface flatness reaches the micron level; then carrying out acid treatment on the end face teeth 10 of the universal coupling, wherein the acid is hydrochloric acid, the mass fraction of the acid is 0.8%, the treatment time is 10min by adopting a brushing and soaking mode, and then washing and drying are carried out;
step S102, carrying out activation heat preservation pretreatment on nylon ultrafine powder, wherein the treatment temperature is 50 ℃, and the nylon ultrafine powder is added with silicon dioxide powder, and the addition amount is 0.05% of the weight; the silicon dioxide powder can play a good role in supporting a framework; in addition, by the microstructure of the tooth end face, it was found that the silica powder and the polymer in nylon form a network structure even if the teeth 11 are engaged and rotated at a high speed, the impact resistance and the anti-chipping ability of the wear-resistant layer 13 are improved.
Step S103, spraying the nylon powder processed in the step S102 onto the outer surface of the end face tooth 10 of the universal coupling in the step S101, wherein the pressure of a spray gun is 0.7MPa;
in this embodiment, the plane of the end face tooth 10 of the universal coupling forms a certain inclination angle with the horizontal plane, the inclination angle is 60 °, the photoresist is used for laying, the tooth 11 and the tooth root are exposed by using an etchant (composed of an organic amine compound, an anticorrosive agent and an organic solvent, for example CN103513523 a), and then spraying is performed perpendicular to the plane of the end face tooth 10 of the universal coupling by using a spray gun.
And step S104, curing and heat-preserving the sprayed end face teeth 10 of the universal coupling, wherein the heat-preserving temperature is 250 ℃, and the adopted heat-preserving equipment is a curing oven.
Example 3
The manufacturing method of the universal coupling end face tooth 10 of the embodiment comprises the following steps:
step S101, firstly adopting a polyurethane polishing pad for treatment, and spraying polishing liquid (the main component is cerium oxide powder) while polishing, and fully utilizing the grinding action between the cerium oxide powder and the teeth 11 to ensure that the surface flatness reaches the micron level; then carrying out acid treatment on the end face teeth 10 of the universal coupling, wherein the acid is nitric acid, the mass fraction of the acid is 0.7%, the treatment time is 7min by adopting a brushing and soaking mode, and then washing and drying are carried out;
step S102, carrying out activation heat preservation pretreatment on nylon ultrafine powder, wherein the treatment temperature is 60 ℃, and the nylon ultrafine powder is added with silicon dioxide powder, and the addition amount is 0.03% of the weight; the silicon dioxide powder can play a good role in supporting a framework; in addition, by the microstructure of the tooth end face, it was found that the silica powder and the polymer in nylon form a network structure even if the teeth 11 are engaged and rotated at a high speed, the impact resistance and the anti-chipping ability of the wear-resistant layer 13 are improved.
Step S103, spraying the nylon powder processed in step S102 on the outer surface of the end face teeth 10 of the universal coupling in step S101, wherein the pressure of a spray gun is 0.6MPa, and the spray gun is a commercial product and is not repeated here.
In this embodiment, the plane of the end face tooth 10 of the universal coupling forms a certain inclination angle with the horizontal plane, the inclination angle is 45 °, the photoresist is used for laying, the tooth 11 and the tooth root are exposed by using an etchant (composed of an organic amine compound, an anticorrosive agent and an organic solvent, for example CN103513523 a), and then spraying is performed perpendicular to the plane of the end face tooth 10 of the universal coupling by using a spray gun.
And step S104, curing and heat-preserving the sprayed end face teeth 10 of the universal coupling, wherein the heat-preserving temperature is 200 ℃, and the adopted heat-preserving equipment is a curing oven.
The invention and its embodiments have been described above by way of illustration and not limitation, and the invention is illustrated in the accompanying drawings and described in the drawings in which the actual structure is not limited thereto. Therefore, if one of ordinary skill in the art is informed by this disclosure, the structural mode and the embodiments similar to the technical scheme are not creatively designed without departing from the gist of the present invention.
Claims (1)
1. The manufacturing method of the end face tooth (10) of the universal coupling comprises the steps that the end face tooth (10) of the universal coupling comprises a plurality of teeth (11) positioned in the same plane and a matrix (12) for bearing the teeth (11), the distance between the adjacent teeth (11) is 3-5mm, a wear-resistant layer (13) is formed on the teeth (11) and the root parts of the teeth, the thickness of the wear-resistant layer (13) is 0.01-0.02mm, and the wear-resistant layer (13) is made of nylon ultrafine powder; the nylon ultrafine powder is added with silicon dioxide powder, the addition amount of the silicon dioxide powder is 0.015-0.05% of the total weight of the nylon ultrafine powder, and the silicon dioxide powder is filled in a reticular structure formed by a high polymer in nylon; the nylon superfine powder is subjected to activation heat preservation pretreatment, and the treatment temperature is 50-70 ℃;
characterized in that the method comprises the following steps:
step S101, firstly adopting a polyurethane polishing pad for treatment, and spraying polishing liquid with the main component of cerium oxide powder during polishing; forming a plurality of grooves on the surface of the polyurethane polishing pad in advance, wherein the width of each groove is consistent with the spacing between adjacent teeth (11); then carrying out acid treatment on the end face teeth (10) of the universal coupling, wherein the acid is sulfuric acid, hydrochloric acid or nitric acid, the mass fraction of the acid is 0.5-0.8%, the treatment time is 5-10min by adopting a brushing and soaking mode, and then washing and drying are carried out;
step S102, carrying out activation heat preservation pretreatment on the nylon superfine powder, wherein the treatment temperature is 50-70 ℃, and the nylon superfine powder is added with silicon dioxide powder, and the addition amount is 0.015-0.05% of the total weight of the nylon superfine powder;
step S103, spraying the nylon powder processed in the step S102 onto the outer surface of the end face teeth (10) of the universal coupling in the step S101, wherein the pressure of a spray gun is 0.5-0.7MPa;
the plane where the end face teeth (10) of the universal coupling are positioned and the horizontal plane form a certain inclined angle, and the inclined angle is 30-60 degrees; adopting photoresist to lay, exposing the tooth (11) and the tooth root by using corrosive agent, and then adopting a spray gun to spray the tooth vertically to the plane of the end face tooth (10) of the universal coupling; the corrosive agent consists of an organic amine compound, an anticorrosive agent and an organic solvent;
step S104, curing and heat-preserving treatment is carried out on the sprayed end face teeth (10) of the universal coupling, wherein the heat-preserving temperature is 200-250 ℃; the heat preservation equipment is a curing oven, and the photoresist is eliminated at the temperature.
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| CN202211343347.7A CN115654029B (en) | 2022-10-31 | 2022-10-31 | Universal coupling end face tooth, manufacturing method thereof and universal coupling |
| PCT/CN2023/112457 WO2024093424A1 (en) | 2022-10-31 | 2023-08-11 | Universal coupling flange fork and manufacturing method therefor, and universal coupling |
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| CN202211343347.7A CN115654029B (en) | 2022-10-31 | 2022-10-31 | Universal coupling end face tooth, manufacturing method thereof and universal coupling |
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