CN113883154A - Fiber-wound composite material shaft end part connecting structure and manufacturing method thereof - Google Patents
Fiber-wound composite material shaft end part connecting structure and manufacturing method thereof Download PDFInfo
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- CN113883154A CN113883154A CN202111157334.6A CN202111157334A CN113883154A CN 113883154 A CN113883154 A CN 113883154A CN 202111157334 A CN202111157334 A CN 202111157334A CN 113883154 A CN113883154 A CN 113883154A
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- 239000002131 composite material Substances 0.000 title claims abstract description 119
- 238000004519 manufacturing process Methods 0.000 title claims description 13
- 238000004804 winding Methods 0.000 claims abstract description 114
- 239000002184 metal Substances 0.000 claims abstract description 89
- 239000000835 fiber Substances 0.000 claims abstract description 36
- 238000000034 method Methods 0.000 claims abstract description 17
- 230000008569 process Effects 0.000 claims abstract description 17
- 230000007704 transition Effects 0.000 claims description 21
- 239000000463 material Substances 0.000 claims description 13
- 238000005520 cutting process Methods 0.000 claims description 6
- 230000007547 defect Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 238000003754 machining Methods 0.000 claims description 3
- 238000000465 moulding Methods 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 210000000746 body region Anatomy 0.000 claims description 2
- 229910052755 nonmetal Inorganic materials 0.000 claims description 2
- 125000006850 spacer group Chemical group 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 abstract description 9
- 230000008859 change Effects 0.000 description 3
- 230000009467 reduction Effects 0.000 description 3
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 239000004519 grease Substances 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003822 epoxy resin Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000009730 filament winding Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920000647 polyepoxide Polymers 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
- F16C3/00—Shafts; Axles; Cranks; Eccentrics
- F16C3/02—Shafts; Axles
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C69/00—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore
- B29C69/001—Combinations of shaping techniques not provided for in a single one of main groups B29C39/00 - B29C67/00, e.g. associations of moulding and joining techniques; Apparatus therefore a shaping technique combined with cutting, e.g. in parts or slices combined with rearranging and joining the cut parts
- B29C69/002—Winding
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Ocean & Marine Engineering (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention relates to a fiber-wound composite material shaft end part connecting structure which comprises a composite material shaft body winding layer, a variable cross-section metal embedded part, a composite material winding fastening layer and an end part flange, wherein the composite material shaft body winding layer is fixedly connected with the end part flange; the variable cross-section metal embedded part is an annular metal component with a circular cross section and a polygonal cross section which are continuously changed, the whole variable cross-section metal embedded part is positioned on the inner side of the end part of the composite material shaft body winding layer, the composite material shaft body winding layer adopts a long fiber continuous winding process, and the mandrel and the surface of the metal embedded part are continuously wound and molded according to a design angle; the composite material winding and fastening layer is a high-tension fiber winding and fastening layer arranged outside the composite material shaft body winding layer and covers the whole variable cross-section metal embedded part area; the end flange is arranged at the end part of the variable cross-section metal embedded part. The invention not only can ensure the continuity of the composite material shaft body fiber, but also can realize the good transmission of torque, thrust and tension, and has good connection strength, various load transmission functions and higher process realizability.
Description
Technical Field
The invention relates to the technical field of composite material transmission shaft design, in particular to a connection structure of a long fiber wound composite material shaft end part and a metal flange and a manufacturing method thereof.
Background
In order to reduce the structural mass of the transmission shaft and improve the functional characteristics of the transmission shaft such as vibration reduction and vibration inhibition, the composite material shaft is applied more and more widely in the fields of ships, vehicles, wind power generation and the like. In general, a composite shaft is usually manufactured and molded by a filament winding process, and in order to realize connection with other shaft sections or power devices, a metal flange structure is often required to be arranged at the end part of the composite shaft, thereby causing a technical problem of connection between a composite shaft body and the metal flange.
At present, in order to realize the connection between the fiber winding composite material shaft and the metal flange, bolt mechanical connection or adhesive connection is often adopted. The bolt connection mode needs to open a hole in the composite material shaft body, and then adopts bolts for connection, so that long fibers of the shaft body are often cut off, a local high stress concentration area is caused, and the connection strength and reliability are influenced; the adhesive connection mode is mainly dependent on the interface bonding strength, and is difficult to bear larger torque, pushing force or pulling force load.
Meanwhile, a connection mode of integrally forming a part of metal flanges and the composite material shaft is also provided, the purposes of continuous winding of long fibers of the shaft body and better bearing are achieved, but the construction process is relatively complex.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a connecting structure of the end part of a fiber winding composite material shaft and a manufacturing method thereof, aiming at the problems of stress concentration caused by local fiber cutting and the defects of complex construction process in the prior art, so that the continuity of the fiber of the composite material shaft body can be ensured, and the local strength reduction or stress concentration caused by fiber cutting is reduced; and through the shape fit between the embedded part and the fiber layer wound on the embedded part, the good transmission of torque, thrust and tension can be realized, and the embedded part has good connection strength, multiple load transmission functions and higher process realizability.
The technical scheme adopted by the invention for solving the technical problems is as follows:
a fiber-wound composite material shaft end part connecting structure comprises a composite material shaft body winding layer, a variable cross-section metal embedded part, a composite material winding fastening layer and an end part flange; the variable cross-section metal embedded part is integrally positioned on the inner side of the end part of the composite material shaft body winding layer and is coaxially arranged with a mandrel of the composite material shaft body winding layer, the composite material shaft body winding layer adopts a long fiber continuous winding process, and the mandrel and the surface of the metal embedded part are continuously wound and molded according to a design angle; the composite material winding and fastening layer is a high-tension fiber winding and fastening layer arranged outside the composite material shaft body winding layer, covers the whole variable cross-section metal embedded part area and extends towards the shaft body area; the end flange is arranged at the end part of the variable cross-section metal embedded part;
the variable cross-section metal embedded part sequentially comprises a front section, a middle section and a rear section along the axial direction, the front section is close to one side of the end flange and is of an annular cross-section structure, and the end part of the front section is fixedly connected with the end flange; the middle section is of a polygonal cross section annular structure, and a conical transition inclined plane is arranged between the middle section and the front section, so that smooth transition from the circular cross section of the front section to the polygonal cross section of the middle section is realized; the rear section is close to one side of the mandrel and is of a conical surface annular structure, and smooth transition from the polygonal cross section of the middle section to the circular cross section of the mandrel is achieved.
In the scheme, the front section of the variable cross-section metal embedded part is of an equal-diameter or variable-diameter circular ring structure.
In the above scheme, the polygonal section of the middle section is a pentagon, a hexagon or an octagon.
In the scheme, the slopes of the tapered transition inclined plane between the front section and the middle section of the variable cross-section metal embedded part and the transition conical plane at the rear section are designed according to specific structure sizes, so that the continuous winding of the winding fiber of the shaft body is ensured, and the defect of rich grease caused by the local fiber 'overhead' is avoided.
In the scheme, the composite material winding fastening layer adopts the same material system as the composite material shaft body winding layer, and the winding angle is 90 degrees, namely, the annular winding is realized.
In the above scheme, the part of the composite material winding fastening layer extending to the shaft body area is thickened so as to ensure the local strength of the composite material shaft when bearing thrust.
In the scheme, the variable cross-section metal embedded part and the end flange are machined and manufactured by high-strength forged steel.
In the scheme, the front section of the variable cross-section metal embedded part is mechanically connected with the end flange through a bolt or a spline.
In the scheme, a metal or nonmetal cushion block is arranged between the composite material winding and fastening layer and the composite material shaft body winding layer in the corresponding area of the variable cross-section metal embedded part, so that the composite material shaft body winding layer is in a regular shape, and the composite material winding and fastening layer is convenient to wind and mold.
Correspondingly, the invention also provides a manufacturing method of the fiber-wound composite material shaft end connecting structure, which comprises the following steps of:
s1, after the surface of the variable cross-section metal embedded part is processed, the variable cross-section metal embedded part is installed on a mandrel and is fixed by adopting a corresponding tool;
s2, winding the composite material shaft body and the end part structure on the variable cross-section metal embedded part and the mandrel according to the designed winding angle by adopting a long fiber winding process, and forming a composite material shaft body winding layer;
s3, manufacturing a composite material winding and fastening layer outside the composite material shaft body winding layer by adopting a 90-degree annular fiber high-tension winding process;
s4, after the composite material shaft to be wound and molded is cured, cutting and removing the redundant part of the shaft end in a machining mode;
and S5, mechanically connecting the variable-section metal embedded part with the end flange to complete the manufacturing and molding of the whole composite material shaft and the end structure thereof.
The invention has the beneficial effects that:
1. according to the connecting structure for the end part of the fiber-wound composite material shaft, the variable-section metal embedded part with the continuously changed circular section and polygonal section is arranged at the end part of the composite material shaft body, long fibers are continuously wound onto the embedded part from the shaft body with the equal diameter and the circular section, the integrated molding and good connection of the composite material shaft body and the embedded part are realized, and the connection of the metal flange and the embedded part is further realized through a related metal connecting mode. By adopting the connecting structure form, holes do not need to be formed, the continuity of the composite material shaft body fiber can be ensured, and the local strength reduction or stress concentration caused by fiber cutting is reduced; meanwhile, through the shape matching between the embedded part and the fiber layer wound on the embedded part, the torque, the thrust and the tension can be well transmitted, and the purposes of structural connection and load transmission are achieved.
2. The connecting structure of the end part of the fiber winding composite material shaft can be used for connecting composite material shaft sections and composite material shafts and power devices, has good connecting strength and various load transfer functions, and has high process realizability.
Drawings
The invention will be further described with reference to the accompanying drawings and examples, in which:
FIG. 1 is a schematic perspective view of a first embodiment of a filament wound composite shaft end connection according to the present invention;
FIG. 2 is a perspective cross-sectional view of the filament wound composite shaft end connection shown in FIG. 1;
FIG. 3 is a schematic structural view of a variable cross-section metal embedment for the fiber-wound composite shaft end connection shown in FIG. 1;
FIG. 4 is a typical longitudinal cross-sectional view of the fiber-wound composite shaft end connection shown in FIG. 1;
FIG. 5 is a schematic perspective view of a variable cross-section embedment for a second embodiment of the fiber-wound composite shaft end connection structure of the present invention;
fig. 6 is a perspective view showing a fiber-wound composite material shaft end connecting structure according to a third embodiment of the present invention.
In the figure: 10. a composite shaft wrap layer;
20. a variable cross-section metal embedded part; 21. a front section; 22. a middle section; 23. a rear section; 24. a tapered transition ramp;
30. winding the composite material around the fastening layer;
40. an end flange; 41. a countersunk bolt;
50. and a cushion block.
Detailed Description
For a more clear understanding of the technical features, objects and effects of the present invention, embodiments of the present invention will now be described in detail with reference to the accompanying drawings.
The first embodiment:
as shown in fig. 1 to 4, a fiber-wound composite material shaft end connection structure according to a first embodiment of the present invention includes a composite material shaft body winding layer 10, a variable cross-section metal embedded part 20, a composite material winding fastening layer 30, and an end flange 40. The variable cross-section metal embedded part 20 is integrally positioned on the inner side of the end part of the composite material shaft body winding layer 10 and is coaxially arranged with the mandrel of the composite material shaft body winding layer 10, the composite material shaft body winding layer 10 is formed by adopting a long fiber continuous winding process, and the mandrel and the surface of the metal embedded part can be continuously wound according to a design angle. For the joint strength between the combined material axle body winding layer 10 and the variable cross section metal embedded part 20 of promotion tip region department, set up combined material winding fastening layer 30 in combined material axle body winding layer 10 outside, combined material winding fastening layer 30 is big tension fibre winding fastening layer, and it covers whole variable cross section metal embedded part 20 region to extend certain length to the axle body region, and suitably thicken in axle body one side, in order to guarantee the local intensity when the combined material axle bears thrust. The composite material shaft body winding layer 10, the variable cross-section metal embedded part 20 and the composite material winding fastening layer 30 are uniformly formed in a winding mode. The end flange 40 is arranged at the end of the variable cross-section metal embedded part 20 and can be fixedly connected with the variable cross-section metal embedded part 20 in a mechanical connection mode of bolts or splines, so that the composite material shaft body and the metal flange are reliably connected.
The variable cross-section metal embedded part 20 sequentially comprises a front section 21, a middle section 22 and a rear section 23 along the axial direction. The front section 21 is close to one side of the end flange 40 and is of a circular ring-shaped cross section annular structure, the radial thickness of a circular ring can meet the requirements of bearing of a composite material shaft and connection between the composite material shaft and the end flange 40, the section can adopt equal diameter or variable diameter according to actual requirements, and a mechanism connected with the end flange 40 is arranged at the end part of the front section 21. The middle section 22 is a polygonal section ring structure, can be set to be pentagonal, hexagonal, octagonal and the like according to the diameter of the shaft body and the requirement of connection strength, and is a circumscribed polygon of the original section from the front section 21 to the position so as to ensure good transition of structural profile. Meanwhile, a conical transition inclined surface 24 is arranged between the middle section 22 and the front section 21, so that smooth transition from the circular cross section of the front section 21 to the polygonal cross section of the middle section 22 is realized. The rear section 23 is a conical annular structure near the mandrel, and smooth transition from the polygonal section of the middle section 22 to the circular section of the mandrel is realized. The slopes of the tapered transition bevel 24 between the front section 21 and the middle section 22 of the variable cross-section metal embedded part 20 and the transition bevel of the rear section 23 are designed according to specific structural dimensions, so that the continuous winding of the winding fiber on the shaft body is ensured, and the defect of rich grease caused by local fiber 'overhead' is avoided. The lengths of the front section 21 and the middle section 22 can be flexibly designed according to the requirements of bearing and connecting strength.
The variable cross-section metal embedded part 20 is an annular metal component with a circular cross section and a polygonal cross section which are continuously changed, and can realize continuous change from the circular cross section to the polygonal cross section and then from the polygonal cross section to the circular cross section. The composite material shaft body winding layer 10 is manufactured by adopting a long fiber continuous winding process, can be continuously wound between an original mandrel and the variable cross-section metal embedded part 20 according to a design angle, at the variable cross-section metal embedded part 20, because the embedded part plays a role of a mold, the cross section shape of the composite material shaft body winding layer 10 can realize continuous change of 'round → polygon → round' in an end part connecting area, form a shape characteristic closely matched with the variable cross-section metal embedded part 20, and can realize the transmission of thrust, tension and torque. The winding layer of the composite material shaft winding layer 10 at the position of the front section 21 of the variable cross-section metal embedded part 20 can be used for transmitting tensile load, the winding layer at the position of the middle section 22 of the variable cross-section metal embedded part 20 can be used for transmitting torque load, and the winding layer at the position of the rear section 23 of the variable cross-section metal embedded part 20 can be used for transmitting thrust load.
Specifically, in this embodiment, the variable cross-section metal embedded part 20 and the end flange 40 are machined from high-strength forged steel; the composite material shaft body winding layer 10 is made of a T700/epoxy resin composite material, the winding angle is +/-45 degrees, the inner diameter of the shaft body is 200mm, and the winding thickness is 20 mm; the composite material winding fastening layer 30 is made of the same material system as the composite material shaft body winding layer 10, and the winding angle is 90 degrees (circumferential winding).
The front section 21 of the variable cross-section metal embedded part 20 is a circular ring-shaped cross section with the same diameter, the length is 50mm, the thickness is 20mm, and an M8 multiplied by 16 threaded blind hole with the depth of 20mm is formed in the front section and is used for being connected with the end flange 40. The section of the middle section 22 of the variable cross-section metal embedded part 20 is an octagon with the length of 100mm, the octagon is an circumscribed polygon of a circle of the front section 21, a conical transition inclined plane 24 is arranged between the front section 21 and the middle section 22, and the gradient is 0.2 through calculation so as to realize good transition of the two sections of the front section 21 and the middle section 22 and continuous winding of the +/-45-degree composite material shaft body winding layer 10. The rear section 23 of the variable cross-section metal embedded part 20 is of a conical surface annular structure, smooth transition from the polygonal cross section of the embedded part middle section 22 to the circular cross section of the mandrel is realized, and the gradient of the variable cross-section metal embedded part is 0.4 in order to realize continuous winding of the +/-45-degree composite material shaft body winding layer 10.
The composite material shaft body winding layer 10 is continuously wound at an angle of +/-45 degrees on a die consisting of a mandrel and the variable-section metal embedded part 20, the winding thickness is 20mm, and finally the shape closely matched with the variable-section metal embedded part 20 is formed outside the variable-section metal embedded part 20, so that the continuous change of the cross section from circular → polygonal → circular is realized.
The intensity and the shape holding degree of combined material axle body winding layer 10 at the tip are the key of guaranteeing joint strength, for cooperation degree and joint strength between lifting connection structure variable cross section metal built-in fitting 20 and combined material axle body winding layer 10, combined material winding fastening layer 30 that thickness is 5mm has been set up in combined material axle body winding layer 10 outside, it adopts T700/epoxy hoop (90) big tension winding, whole built-in fitting region has been covered, and to the inside 30mm that extends of axle body, and increase thickness to 10mm by 5mm in extended position department, with enough local strength has here when guaranteeing combined material axle body winding layer 10 to bear thrust load.
In order to realize the connection between the composite material shaft and an external structure, an end flange 40 is arranged, the whole body of the end flange is a double-faced flange, an M8 multiplied by 16 thread through hole is formed in an inner ring, and the end flange can be mechanically connected with the variable cross-section metal embedded part 20 through a countersunk head bolt 41. The threaded through hole is reserved in the outer ring of the end flange 40 and can be used for mechanical connection with other external structures. Meanwhile, in order to ensure good matching between the end flange 40 and the variable cross-section metal embedded part 20, a cylindrical flange with the height of 30mm is arranged on the inner ring of the end flange 40 and is precisely matched and assembled with the inner side wall of the variable cross-section metal embedded part 20.
Second embodiment:
as shown in fig. 5, the present embodiment is different from the first embodiment in that: the section of the middle section 22 of the variable-section metal embedded part 20 is still octagonal, but the diameter of an inscribed circle of the octagonal middle section 22 is 10mm larger than that of the front section 21 of the variable-section metal embedded part 20, and transition conical surfaces on two sides of the middle section 22 are calculated and adjusted. By adopting the scheme of the embodiment, the size of the octagonal flange of the middle section 22 can be larger, and a deeper groove is formed in the front section 21, so that the bearing of the tension and torque load is more favorable compared with the first embodiment.
The embodiment is intended to illustrate that the metal embedded part in the invention has good designability, and can be flexibly and optimally designed according to the actual load and the size of the structure.
The third embodiment:
as shown in fig. 6, the present embodiment is different from the first embodiment in that: after the composite material shaft body winding layer 10 is wound and formed, the metal cushion block 50 is arranged outside the composite material shaft body winding layer 10 corresponding to the middle section 22 of the variable cross-section metal embedded part 20, the outer surface of the composite material shaft body winding layer 10 at the position is changed into a regular circular cross section, and then the composite material is wound outside the composite material winding and fastening layer 30, so that the fastening and reinforcing effects can be better realized.
Correspondingly, the invention also provides a manufacturing method of the fiber-wound composite material shaft end connecting structure, which comprises the following steps of:
s1, after the surface of the variable cross-section metal embedded part 20 is processed, the variable cross-section metal embedded part is installed on a mandrel and is fixed by adopting a corresponding tool;
s2, winding the composite material shaft body and the end part structure on the variable cross-section metal embedded part and the mandrel according to the designed winding angle by adopting a long fiber winding process, and forming the composite material shaft body winding layer 10;
s3, manufacturing a composite material winding and fastening layer 30 outside the composite material shaft body winding layer 10 by adopting a 90-degree annular fiber high-tension winding process;
s4, after the composite material shaft to be wound and molded is cured, cutting and removing the redundant part of the shaft end in a machining mode;
and S5, mechanically connecting the variable-section metal embedded part 20 with the end flange 40 to complete the manufacturing and forming of the whole composite material shaft and the end structure thereof.
While the present invention has been described with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, which are illustrative and not restrictive, and it will be apparent to those skilled in the art that various changes and modifications can be made therein without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A fiber-wound composite material shaft end part connecting structure comprises a composite material shaft body winding layer, and is characterized by further comprising a variable cross-section metal embedded part, a composite material winding fastening layer and an end part flange; the variable cross-section metal embedded part is integrally positioned on the inner side of the end part of the composite material shaft body winding layer and is coaxially arranged with a mandrel of the composite material shaft body winding layer, the composite material shaft body winding layer adopts a long fiber continuous winding process, and the mandrel and the surface of the metal embedded part are continuously wound and molded according to a design angle; the composite material winding and fastening layer is a high-tension fiber winding and fastening layer arranged outside the composite material shaft body winding layer, covers the whole variable cross-section metal embedded part area and extends towards the shaft body area; the end flange is arranged at the end part of the variable cross-section metal embedded part;
the variable cross-section metal embedded part sequentially comprises a front section, a middle section and a rear section along the axial direction, the front section is close to one side of the end flange and is of an annular cross-section structure, and the end part of the front section is fixedly connected with the end flange; the middle section is of a polygonal cross section annular structure, and a conical transition inclined plane is arranged between the middle section and the front section, so that smooth transition from the circular cross section of the front section to the polygonal cross section of the middle section is realized; the rear section is close to one side of the mandrel and is of a conical surface annular structure, and smooth transition from the polygonal cross section of the middle section to the circular cross section of the mandrel is achieved.
2. The filament-wound composite shaft end connection according to claim 1, wherein the variable cross-section metal embedment has a forward section in the form of a constant diameter or variable diameter circular ring.
3. The filament wound composite shaft end connection according to claim 1, wherein the mid-section polygonal cross section is pentagonal, hexagonal or octagonal.
4. The structure of claim 1, wherein the slopes of the tapered transition slopes between the front and middle sections and the transition slopes of the rear section of the variable cross-section metal embedment are designed according to specific structural dimensions to ensure continuous winding of the fiber around the shaft body without the occurrence of fat-rich defects caused by local fiber "overhead".
5. The filament wound composite shaft end connection according to claim 1, wherein the composite wound fastening layer is of the same material system as the composite wound shaft layer, wound at an angle of 90 °, i.e. hoop wound.
6. The filament wound composite shaft end connection according to claim 1, wherein the portion of the composite wound fastening layer extending to the shaft body region is thickened to ensure local strength of the composite shaft when subjected to thrust forces.
7. The filament wound composite shaft end connection according to claim 1, wherein the variable cross-section metal embedment and the end flanges are machined from high strength forged steel.
8. The filament wound composite shaft end connection according to claim 1, wherein the front sections of the variable cross-section metal embedments are mechanically connected to the end flanges by bolts or splines.
9. The structure of claim 1, wherein a metal or non-metal spacer is disposed between the fastening layer and the winding layer, in the area corresponding to the metal embedded part with variable cross-section, to make the winding layer have regular shape for facilitating the winding of the fastening layer.
10. The method of manufacturing a filament wound composite shaft end connection according to claim 1, comprising the steps of:
s1, after the surface of the variable cross-section metal embedded part is processed, the variable cross-section metal embedded part is installed on a mandrel and is fixed by adopting a corresponding tool;
s2, winding the composite material shaft body and the end part structure on the variable cross-section metal embedded part and the mandrel according to the designed winding angle by adopting a long fiber winding process, and forming a composite material shaft body winding layer;
s3, manufacturing a composite material winding and fastening layer outside the composite material shaft body winding layer by adopting a 90-degree annular fiber high-tension winding process;
s4, after the composite material shaft to be wound and molded is cured, cutting and removing the redundant part of the shaft end in a machining mode;
and S5, mechanically connecting the variable-section metal embedded part with the end flange to complete the manufacturing and molding of the whole composite material shaft and the end structure thereof.
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| CN202111157334.6A CN113883154A (en) | 2021-09-30 | 2021-09-30 | Fiber-wound composite material shaft end part connecting structure and manufacturing method thereof |
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| CN202111157334.6A CN113883154A (en) | 2021-09-30 | 2021-09-30 | Fiber-wound composite material shaft end part connecting structure and manufacturing method thereof |
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| CN201221653Y (en) * | 2006-09-13 | 2009-04-15 | 艾默生动力传动制造有限合伙 | Flange design of composite axle winding with fiber |
| CN103775515A (en) * | 2014-01-24 | 2014-05-07 | 常州神鹰碳塑复合材料有限公司 | Structure for connecting carbon fiber composite shaft and metal shaft |
| CN105782603A (en) * | 2016-04-05 | 2016-07-20 | 中国船舶重工集团公司第七〇二研究所 | Composite material structural part with metal flanges and preparing method of composite material structural part |
| CN110315774A (en) * | 2019-07-05 | 2019-10-11 | 北华航天工业学院 | The forming method and composite material pull rod of composite material pull rod |
| CN111319283A (en) * | 2020-03-06 | 2020-06-23 | 中国电子科技集团公司第五十四研究所 | Composite material and metal joint forming process |
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