CN117967757A - Wear-resisting anti-fatigue face gear with composite bionic micro-texture - Google Patents
Wear-resisting anti-fatigue face gear with composite bionic micro-texture Download PDFInfo
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- CN117967757A CN117967757A CN202410192256.0A CN202410192256A CN117967757A CN 117967757 A CN117967757 A CN 117967757A CN 202410192256 A CN202410192256 A CN 202410192256A CN 117967757 A CN117967757 A CN 117967757A
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- face gear
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- 239000011664 nicotinic acid Substances 0.000 title claims abstract description 87
- 239000002131 composite material Substances 0.000 title claims abstract description 84
- 230000002929 anti-fatigue Effects 0.000 title claims abstract description 7
- 241000405070 Percophidae Species 0.000 claims abstract description 19
- 239000010687 lubricating oil Substances 0.000 claims abstract description 10
- 241000239226 Scorpiones Species 0.000 claims description 9
- 230000033001 locomotion Effects 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 230000003592 biomimetic effect Effects 0.000 claims 1
- 238000005461 lubrication Methods 0.000 abstract description 18
- 208000035874 Excoriation Diseases 0.000 abstract description 11
- 238000005299 abrasion Methods 0.000 abstract description 11
- 239000002245 particle Substances 0.000 abstract description 9
- 230000000694 effects Effects 0.000 abstract description 8
- 239000003921 oil Substances 0.000 abstract description 8
- 230000002035 prolonged effect Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 6
- 239000007788 liquid Substances 0.000 description 4
- 241000238631 Hexapoda Species 0.000 description 3
- 241000208720 Nepenthes Species 0.000 description 3
- 230000001050 lubricating effect Effects 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000009347 mechanical transmission Effects 0.000 description 1
- 235000001968 nicotinic acid Nutrition 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000016709 nutrition Nutrition 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 230000002195 synergetic effect Effects 0.000 description 1
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- Gears, Cams (AREA)
Abstract
The invention discloses a wear-resistant anti-fatigue face gear with a composite bionic micro-texture, which belongs to the technical field of machinery and comprises a face gear body, wherein the tooth surface of a face gear tooth is provided with a plurality of composite micro-textures, and the composite bionic micro-texture is provided with a nepenthes-like duckbill pit and a desert scorpion-like inclined wall surface. The duckbill-shaped pits provide convergence gaps for the tooth surfaces of the face gears, and in a rich oil state, the existence of each duckbill-shaped pit is equivalent to a tiny hydrodynamic lubrication bearing, so that an additional hydrodynamic lubrication effect can be generated, the tooth surfaces of the face gears are promoted to form hydrodynamic lubrication, and the overall lubrication performance of the tooth surfaces is further improved; in the oil-depleted state, the stored lubricating oil is squeezed out to form a stable oil film. The duckbill shaped concave pit can also contain the abrasion particles, so that the secondary abrasion of the abrasion particles to the tooth surface is avoided. The inclined wall surface can effectively reduce stress concentration and inhibit the generation and the expansion of cracks. The bearing capacity of the face gear is improved, and the service life of the gear is prolonged.
Description
Technical Field
The invention relates to the technical field of bionic mechanical transmission structures, in particular to a wear-resistant and fatigue-resistant face gear with a composite bionic micro-texture.
Background
Face gear transmission is a novel transmission mode. Compared with bevel gear transmission, the device has the characteristics of lighter weight, higher bearing capacity, higher reliability, longer service life and the like. In face gear meshing transmission, sliding friction is necessarily generated due to relative sliding on meshing surfaces, and the face gear bears periodic impact force, bending stress, contact stress and the like in the transmission process, so that various failure modes such as: gear tooth breakage, tooth surface wear, pitting, gluing, plastic deformation, and the like. Especially, under the extreme service conditions of high speed, heavy load and the like in the aerospace field, the face gear transmission has the advantages of aggravated tooth surface abrasion and sharply reduced fatigue life. Therefore, how to reduce the abrasion of the tooth surface of the face gear, improve the fatigue resistance of the tooth surface of the face gear and prolong the service life of the face gear is a problem which needs to be solved at present.
As an effective way to improve the interfacial properties of friction surfaces, surface texture has now become one of the research hotspots in the tribology and surface engineering fields. Through natural evolution, researches show that various microstructures with certain shapes, distributions and dimensions are optimized on the body surfaces of a plurality of organisms, so that the microstructures can be better adapted to the surrounding environment, and the microstructures have the functions of wear resistance, hydrophobicity, drag reduction, stain resistance and the like, thereby providing more possibility for researching the surface texture. Researches also find that the single bionic texture has limited performance, and the combined surfaces of multiple bionic textures have the performances of controlling the directional transportation of lubricating liquid, reducing stress concentration, storing abrasive dust, resisting impact, resisting scouring and the like, and the generated synergistic effect of the single bionic texture can improve the tribological performance of the friction surface to the greatest extent, so that the effect of 1+1 is more than 2 is generated.
The nepenthes grow in the moisture-poor soil, nutrition is obtained by predating insects, and the leaf cage lips have unique micro-textures, so that friction force and adhesion force between the surfaces of the nepenthes and the insect soles can be reduced, the insects cannot stay on the leaf cage lips and slide into consumed liquid in the inner pockets, and the predation function is realized. The bionics finding that nepenthes lips have duckbill pit texture, which can store liquid, help to form liquid film, and can improve hydrodynamic lubrication effect of fluid, with excellent lubrication performance and friction performance. The tooth surface of the face gear is modified by utilizing the biological natural characteristic, so that the wear resistance of the face gear can be improved.
The scorpions living in the desert area can still maintain the structural integrity of the scorpions after long-term impact of wind and sand, and show good cracking resistance. The bionic person finds that the back of the strip-shaped plaque scorpion is provided with a V-shaped groove texture, so that the strip-shaped plaque scorpion has a stress slow-release effect and can inhibit the generation and the expansion of fatigue cracks. The tooth surface of the face gear is modified by utilizing the biological natural characteristic, so that the fatigue resistance of the face gear can be improved.
Disclosure of Invention
The invention aims to improve the dynamic pressure lubrication effect of lubricating oil, reduce the secondary abrasion of abrasion particles to the tooth surface of a face gear, reduce the stress concentration of the texture edge, enable the face gear surface to have better wear resistance and fatigue resistance, improve the bearing capacity and the service life of the face gear, and provide the wear-resistant and fatigue-resistant face gear with the composite bionic micro-texture, which can be applied to the aerospace field.
The wear-resistant anti-fatigue face gear with the composite bionic micro-texture comprises a face gear body 1 and face gear teeth, wherein the tooth surfaces of the face gear teeth are provided with a plurality of composite bionic micro-textures 2, the composite bionic micro-textures 2 are provided with nepenthes-like duckbill pits 3, and pit walls of the nepenthes-like duckbill pits 3 are desert-like scorpion inclined wall surfaces 4;
The composite bionic micro-texture 2 is duckbill-shaped and consists of two sections of secondary curves and two sections of straight lines;
The two sections of curves are composite bionic micro-texture curves 31, expressed as And a composite bionic microtextured tail curve 32, represented as; The two straight lines are connecting lines 33 for connecting the bottoms of the composite bionic micro-texture curve 31 and the composite bionic micro-texture tail curve 32;
The graph shape is expressed by the following formula:
wherein x is the transverse coordinate of the top view of the composite bionic micro-texture, y is the longitudinal coordinate of the top view of the composite bionic micro-texture, Is the total length of the composite bionic micro-texture,Is the tail length of the composite bionic micro-texture,Is the total width of the composite bionic micro-texture,The tail width of the composite bionic micro-texture is;
the tip direction of the nepenthes-like duckbilled pit 3 is the same as the tooth tip direction of the face gear;
The total length of the composite bionic micro-texture 2 is Tail length=500 to 700 μm100-300 Μm, total widthTail width of 500-700 μm=20~100μm；
The inclination angle of the inclined wall surface 4 of the desert-like scorpion is theta=30-60 degrees, and the height is h=5-15 mu m;
the inclined wall surface 4 of the desert-like scorpion is inclined from bottom to top outwards;
The composite bionic micro-textures 2 are distributed in a rectangular array, and a plurality of composite bionic micro-textures 2 in each row are sequentially and equidistantly arranged;
The distance between every two adjacent composite bionic micro-textures 2 is 1mm;
the motion direction of the lubricating oil of the composite bionic micro-texture 2 is as follows: flowing from the opening of the nepenthes-imitating duckbill pit 3 to the tip of the nepenthes-imitating duckbill pit 3.
The invention discloses a wear-resistant anti-fatigue face gear with a composite bionic micro-texture, which comprises a face gear body, wherein the tooth surface of the face gear tooth is provided with a plurality of composite micro-textures, and the composite bionic micro-texture is provided with a nepenthes-like duckbill pit and a desert scorpion-like inclined wall surface.
The beneficial effects are that:
the duckbill-shaped pits provide convergence gaps for the tooth surfaces of the face gears, and in a rich oil state, the existence of each duckbill-shaped pit is equivalent to a tiny hydrodynamic lubrication bearing, so that an additional hydrodynamic lubrication effect can be generated, the tooth surfaces of the face gears are promoted to form hydrodynamic lubrication, and the overall lubrication performance of the tooth surfaces is further improved; in the oil-depleted state, the stored lubricating oil is squeezed out to form a stable oil film. The duckbill shaped concave pit can also contain the abrasion particles, so that the secondary abrasion of the abrasion particles to the tooth surface is avoided. The inclined wall surface can effectively reduce stress concentration and inhibit the generation and the expansion of cracks. When the face gears are meshed, the existence of the inclined wall surfaces enables lubricating oil to flow more easily on the tooth surfaces, so that the lubricating performance is improved; when the face gear is not engaged, the existence of the inclined wall surface makes abrasion particles more easily thrown out. The design of the composite bionic micro-texture effectively improves the lubrication performance of the tooth surface of the face gear, reduces stress concentration, enables the face gear to obtain good wear resistance and fatigue resistance, improves the bearing capacity of the face gear, and prolongs the service life of the gear.
Drawings
FIG. 1 is a schematic three-dimensional schematic diagram of an embodiment of a wear-resistant fatigue-resistant face gear with a composite bionic micro-texture;
FIG. 2 is an enlarged view of the portion I of FIG. 1;
FIG. 3 is a schematic diagram of a composite bionic micro-texture distribution of a wear-resistant and fatigue-resistant face gear with a composite bionic micro-texture;
FIG. 4 is a schematic top view of a single composite bionic micro-texture of a wear resistant fatigue resistant face gear with a composite bionic micro-texture;
Fig. 5 is a cross-sectional view A-A of fig. 3.
In the figure: 1. face gear body, 2, composite bionic micro-texture, 3, duckbill-shaped pits, 31, composite bionic micro-texture curves, 32, composite bionic micro-texture tail curves, 33, connecting lines and 4, inclined wall surfaces.
Detailed Description
In order to make the technical problems, technical schemes and beneficial effects solved by the invention clearer, the invention is further described in detail below with reference to the accompanying drawings and embodiments.
Example 1A wear-resistant fatigue-resistant face Gear with Compound bionic micro-texture
As shown in fig. 1 to 5, the wear-resistant anti-fatigue face gear with the composite bionic micro-texture comprises a face gear body 1, wherein the tooth surface of the face gear tooth is provided with a plurality of composite bionic micro-textures 2, and the composite bionic micro-textures 2 are provided with nepenthes-like duckbill pits 3 and desert scorpion-like inclined wall surfaces 4.
The top view shape of the composite bionic micro-texture is duckbill-shaped and consists of two sections of secondary curves and two sections of straight lines, wherein the two sections of curves are composite bionic micro-texture curves (31) which are expressed asAnd a composite bionic microtextured tail curve (32), expressed as; The two straight lines are connecting lines (33) for connecting the bottoms of the composite bionic micro-texture curve (31) and the composite bionic micro-texture tail curve (32);
the graphic shape is represented by the following formula:
wherein x is the transverse coordinate of the top view of the composite bionic micro-texture, y is the longitudinal coordinate of the top view of the composite bionic micro-texture, Is the total length of the composite bionic micro-texture,Is the tail length of the composite bionic micro-texture,Is the total width of the composite bionic micro-texture,The width of the tail part of the composite bionic micro-texture is the width of the tail part of the composite bionic micro-texture.
The duckbill-shaped pits 3 provide convergence gaps for the tooth surfaces of the face gears 1, and in a rich oil state, the existence of each duckbill-shaped pit 3 is equivalent to a tiny hydrodynamic lubrication bearing, so that an additional hydrodynamic lubrication effect can be generated, the tooth surfaces of the face gears 1 are promoted to form hydrodynamic lubrication, and the overall lubrication performance of the tooth surfaces is further improved; in the oil-starved state, when the face gear 1 is meshed, lubricating oil stored in the duckbill-shaped pit 3 is forced to be extruded, a stable oil film is formed, and the tooth surface is prevented from entering a dry friction state. The duckbill shaped recess 3 can also accommodate wear particles, avoiding secondary wear of the tooth surface by the wear particles. The design of the duckbill pit 3 effectively improves the lubrication performance of the tooth surface of the face gear 1, so that the face gear 1 has better wear resistance, the bearing capacity of the face gear 1 is improved, and the service life of the face gear 1 is prolonged.
The duckbill shaped recess 3 is an axisymmetric pattern with the y-axis as the symmetry axis. The duckbilled pit 3 is convergent along the movement direction of the lubricating oil, can generate larger dynamic pressure and has obvious dynamic pressure lubrication effect.
The total length of the duckbill-shaped concave pit 3 isTail length=500 to 700 μm100-300 Μm, total widthTail width of 500-700 μm =20~100μm。
The movement direction of the lubricating oil in the duckbill pit 3 is as follows: flows from the opening of the duckbill shaped recess 3 to the tip of the duckbill shaped recess 3.
The wall surface of the duckbill pit 3 is an inclined wall surface 4 which is inclined from bottom to top. The inclined wall surface 4 can effectively reduce stress concentration and inhibit the generation and the extension of cracks. When the face gear 1 is meshed, the existence of the inclined wall surface 4 enables lubricating oil to flow more easily on the tooth surface, so that the lubricating performance is improved; the presence of the inclined wall surface 4 makes it easier to throw away wear particles when the face gear 1 is not engaged. The design of the inclined wall surface 4 effectively improves the fatigue resistance of the face gear 1 and prolongs the service life of the face gear 1.
The inclination angle of the inclined wall surface 4 is θ=30 to 60 °, and the height is h=5 to 15 μm.
The composite bionic micro-textures 2 are distributed in a rectangular array, and the distances between every two adjacent composite bionic micro-textures 2 are equal.
The distance between every two adjacent composite bionic micro-textures is a=1mm.
Claims (10)
1. The utility model provides a wear-resisting antifatigue face gear with compound bionical micro-texture, includes face gear body (1), face gear teeth, its characterized in that: the tooth surface of the face gear tooth is provided with a plurality of composite bionic micro-textures (2), the composite bionic micro-textures (2) are provided with nepenthes-like duckbilled pits (3), and the pit wall of each nepenthes-like duckbilled pit (3) is a desert scorpion-like inclined wall surface (4).
2. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 1, wherein: the composite bionic micro-texture (2) is duckbill-shaped and consists of two sections of secondary curves and two sections of straight lines;
the two sections of curves are composite bionic micro-texture curves (31) expressed as And a composite biomimetic microtextured tail curve (32), expressed as/>; The two straight lines are connecting lines (33) connecting the bottoms of the composite bionic micro-texture curve (31) and the composite bionic micro-texture tail curve (32).
3. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 2, wherein:
The graph shape is expressed by the following formula:
；
；
wherein x is the transverse coordinate of the top view of the composite bionic micro-texture, y is the longitudinal coordinate of the top view of the composite bionic micro-texture, Is the total length of the composite bionic micro-texture,/>Is the tail length of the composite bionic micro-textureIs the total width of the composite bionic micro-texture,/>The width of the tail part of the composite bionic micro-texture is the width of the tail part of the composite bionic micro-texture.
4. A wear-resistant and fatigue-resistant face gear with composite bionic micro-texture according to claim 1,2 or 3, characterized in that: the tip direction of the nepenthes-like duckbilled pit (3) is the same as the tooth tip direction of the face gear.
5. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 4, wherein: the total length of the composite bionic micro-texture (2) is=500 To 700 μm, tail length/>=100 To 300 μm, total width/>=500 To 700 μm, tail width/>=20~100μm。
6. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 5, wherein: the inclination angle of the inclined wall surface (4) of the desert-like scorpion is theta=30-60 degrees, and the height is h=5-15 mu m.
7. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 6, wherein: the inclined wall surface (4) of the desert-like scorpion is inclined from bottom to top.
8. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 7, wherein: the composite bionic micro-textures (2) are distributed in a rectangular array, and the composite bionic micro-textures (2) in each row are sequentially and equidistantly arranged.
9. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 8, wherein: the distance between every two adjacent composite bionic micro-textures (2) is 1mm.
10. The wear-resistant and fatigue-resistant face gear with composite bionic micro-texture of claim 9, wherein: the motion direction of the lubricating oil of the composite bionic micro-texture (2) is as follows: the tip of the nepenthes-imitating duckbill pit (3) flows from the opening of the nepenthes-imitating duckbill pit (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410192256.0A CN117967757A (en) | 2024-02-21 | 2024-02-21 | Wear-resisting anti-fatigue face gear with composite bionic micro-texture |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410192256.0A CN117967757A (en) | 2024-02-21 | 2024-02-21 | Wear-resisting anti-fatigue face gear with composite bionic micro-texture |
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| CN117967757A true CN117967757A (en) | 2024-05-03 |
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| CN202410192256.0A Pending CN117967757A (en) | 2024-02-21 | 2024-02-21 | Wear-resisting anti-fatigue face gear with composite bionic micro-texture |
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| CN (1) | CN117967757A (en) |
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- 2024-02-21 CN CN202410192256.0A patent/CN117967757A/en active Pending
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