CN113942248A - Manufacturing method of composite material transmission shaft and composite material transmission shaft - Google Patents
Manufacturing method of composite material transmission shaft and composite material transmission shaft Download PDFInfo
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- CN113942248A CN113942248A CN202111221874.6A CN202111221874A CN113942248A CN 113942248 A CN113942248 A CN 113942248A CN 202111221874 A CN202111221874 A CN 202111221874A CN 113942248 A CN113942248 A CN 113942248A
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- main body
- metal joint
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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
- B29C70/00—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts
- B29C70/04—Shaping composites, i.e. plastics material comprising reinforcements, fillers or preformed parts, e.g. inserts comprising reinforcements only, e.g. self-reinforcing plastics
- B29C70/28—Shaping operations therefor
- B29C70/30—Shaping by lay-up, i.e. applying fibres, tape or broadsheet on a mould, former or core; Shaping by spray-up, i.e. spraying of fibres on a mould, former or core
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/48—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor using adhesives, i.e. using supplementary joining material; solvent bonding
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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
- B29C65/00—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor
- B29C65/74—Joining or sealing of preformed parts, e.g. welding of plastics materials; Apparatus therefor by welding and severing, or by joining and severing, the severing being performed in the area to be joined, next to the area to be joined, in the joint area or next to the joint area
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/01—General aspects dealing with the joint area or with the area to be joined
- B29C66/02—Preparation of the material, in the area to be joined, prior to joining or welding
- B29C66/022—Mechanical pre-treatments, e.g. reshaping
- B29C66/0224—Mechanical pre-treatments, e.g. reshaping with removal of material
- B29C66/02241—Cutting, e.g. by using waterjets, or sawing
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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
- B29C66/00—General aspects of processes or apparatus for joining preformed parts
- B29C66/70—General aspects of processes or apparatus for joining preformed parts characterised by the composition, physical properties or the structure of the material of the parts to be joined; Joining with non-plastics material
- B29C66/74—Joining plastics material to non-plastics material
- B29C66/742—Joining plastics material to non-plastics material to metals or their alloys
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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
- F16C3/04—Crankshafts, eccentric-shafts; Cranks, eccentrics
- F16C3/06—Crankshafts
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ocean & Marine Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Composite Materials (AREA)
- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
Abstract
The invention discloses a manufacturing method of a composite material transmission shaft and the composite material transmission shaft, comprising the steps of manufacturing a transmission shaft main body on a winding mandrel in a fiber winding mode, and reserving a fiber back yarn section at the end part of the transmission shaft main body; curing the wound transmission shaft main body with resin; cutting off the reserved fiber yarn returning section, and processing a connecting part at the end part of the cut transmission shaft main body; a metal joint is bonded on the connecting part, and a metal inner sleeve is inserted and bonded between the connecting part and the metal joint; the invention is provided with the metal inner sleeve, the metal inner sleeve is respectively inserted and bonded on the inner diameter side of the transmission shaft main body and the inner diameter side of the metal joint, and the transmission shaft main body is bonded and connected with the metal joint, so that the metal inner sleeve is used as an intermediate structure to realize effective connection between the transmission shaft main body and the metal joint, and the interface shear strength bearing capacity between the transmission shaft main body and the metal joint can be improved.
Description
Technical Field
The invention relates to the technical field of fiber winding and machining, in particular to a manufacturing method of a composite material transmission shaft and the composite material transmission shaft.
Background
The transmission shaft structure is mainly used for transmitting torque generated by a power system to an actuating system in a long range, generating corresponding actuation and doing work, and generating an intermediate structure part with an artificially expected actuation result, and is widely applied to various fields of engineering machinery, automobiles, ship propulsion, aerospace and the like. The metal material transmission shaft is heavy in structure, and the structural design is too thick when large transmission torque is transmitted, so that the whole weight of the transmission shaft is large, and the process difficulty in processing, assembling and carrying is brought. With the increasing application of composite materials in the fields of aerospace, automobiles, ships, sports and the like, the technical maturity becomes clear day by day. Compared with the traditional metal transmission shaft, the composite material transmission shaft has the advantages of light weight, corrosion resistance, good fatigue performance and the like. However, compared with the traditional metal transmission shaft, the composite material transmission shaft has the advantages that the metal machining mode can be simply obtained, the difference is obtained, when the composite material transmission shaft is assembled with other parts, the direct connection between the composite material and the metal is considered, compared with a metal structure, the composite material has the defects of low interlayer shear strength, poor impact resistance and the like, and the characteristics of large assembly connection difficulty and high technical requirement of the structure are determined. The reasonable selection and application of the connection mode of the composite material are one of the important conditions for improving the strength of the composite material structural member, reducing the structural weight and giving full play to the excellent characteristics of the composite material. Therefore, in practical application of the composite material transmission shaft, how to realize the design of the connection structure between the main body structure of the composite material transmission shaft and the metal joint is very important.
Chinese patent application publication No. CN 110131323 a discloses a carbon fiber composite material drive shaft tube joint structure, in which a plurality of first rectangular teeth are uniformly arranged along the circumference at both ends of a hollow shaft tube; the two shaft tube joints are respectively fixed at two ends of the hollow shaft tube in a matching way, and the inner wall of the shaft tube joint is smoothly connected with the inner wall of the hollow shaft tube; universal joint one end is the tubulose, is provided with a plurality of second rectangle teeth along the circumference, and the universal joint matches the cover and establishes the central siphon and connects the outer wall, second rectangle tooth and the meshing of first rectangle tooth, that is to say, this scheme utilizes the mode of first rectangle tooth and the meshing of second rectangle tooth to realize the moment of torsion transmission, though can strengthen the intensity of moment of torsion transmission, but does not have effectual reinforcing to interface shear strength, consequently, the joint design of this scheme has certain limitation.
Chinese patent application publication No. CN 108799315 a discloses a composite material transmission shaft for a vehicle and a preparation method thereof, wherein a plurality of through holes are uniformly distributed in the tube wall at two ends of a fiber reinforced composite material tube in the circumferential direction; the metal connecting piece has the external diameter the same with the internal diameter of the tip of fibre reinforced composite pipe, and the hoop is equipped with a plurality of shrinkage pools that correspond with the quantity and the position of through-hole, two metal connecting pieces are connected in the both ends of fibre reinforced composite pipe with the axle center respectively, and wear to establish through-hole and shrinkage pool through the round pin axle, that is to say, this scheme realizes the connection of composite pipe and metal connecting piece through the round pin axle, though can the transmission moment of torsion, but produce great stress concentration phenomenon easily at the through-hole periphery on the composite pipe, cause the damage of composite inefficacy to destroy, finally lead to the transmission shaft transmission to become invalid.
Disclosure of Invention
The invention aims to provide a manufacturing method of a composite material transmission shaft and the composite material transmission shaft thereof, which are used for solving the problems in the prior art.
In order to achieve the purpose, the invention provides the following scheme:
the invention also provides a manufacturing method of the composite material transmission shaft, which comprises the following steps:
manufacturing a transmission shaft main body on a winding mandrel in a fiber winding mode, and reserving a fiber back yarn section at the end part of the transmission shaft main body;
curing the wound transmission shaft main body with resin;
cutting off the reserved fiber yarn returning section, and processing a connecting part at the end part of the cut transmission shaft main body;
and a metal joint is bonded on the connecting part, and a metal inner sleeve is inserted and bonded between the connecting part and the metal joint.
Preferably, the winding mandrel is sized according to the design size of the drive shaft body, the length of the winding mandrel being longer than the length of the drive shaft body.
Preferably, a first toothed end surface is processed on the connecting portion, the first toothed end surface is engaged with a second toothed end surface of the metal joint, a polygonal inserting portion is processed on the inner diameter side of the first toothed end surface, and the polygonal inserting portion is attached to and connected with an inner polygonal receiving portion of the metal joint.
The invention also provides a composite material transmission shaft which comprises a transmission shaft main body made of composite materials, wherein the transmission shaft main body is provided with a connecting part used for connecting a metal joint, the inner diameter side of the connecting part and the inner diameter side of the metal joint are sleeved with the same metal inner sleeve, the connecting part is connected with the metal joint in an adhesive mode, and the connecting part and the metal joint are connected with the metal inner sleeve in an adhesive mode.
Preferably, the metal inner sleeve includes a flange, and a first insertion portion and a second insertion portion provided at both sides of the flange, the first insertion portion and the second insertion portion are respectively inserted into the metal joint and the connection portion, and both surfaces of the flange abut against the metal joint and the connection portion, respectively.
Preferably, the end of the first and/or second insert portion is tapered.
Preferably, the transmission shaft main body is a hollow structure.
Preferably, the transmission shaft main body is manufactured in a fiber winding mode.
Preferably, the connecting portion includes a first toothed end surface, and the metal joint includes a second toothed end surface, and the first toothed end surface is in meshing connection with the second toothed end surface.
Preferably, a polygonal inserting part is arranged on the inner diameter side of the first toothed end face, an inner polygonal receiving part is arranged on the inner diameter side of the metal joint, and each side face of the polygonal inserting part is in fit connection with each side face of the inner polygonal receiving part.
Compared with the prior art, the invention has the following technical effects:
(1) according to the invention, the metal inner sleeve is arranged between the transmission shaft main body made of the composite material and the metal joint, the metal inner sleeve is respectively inserted and bonded on the inner diameter side of the transmission shaft main body and the inner diameter side of the metal joint, and the transmission shaft main body and the metal joint are bonded and connected simultaneously, so that the metal inner sleeve is used as an intermediate structure to realize effective connection between the transmission shaft main body and the metal joint, and the interface shear strength bearing capacity between the transmission shaft main body and the metal joint can be improved;
(2) according to the invention, the first tooth-shaped end face of the connecting part of the transmission shaft main body is meshed with the second tooth-shaped end face of the metal joint, and the tooth-shaped structure or the lug plate structure on the first tooth-shaped end face and the second tooth-shaped end face is utilized to bear certain shearing force, so that the torque bearing capacity of the composite material transmission shaft is enhanced;
(3) the polygonal inserting part arranged on the inner diameter side of the first tooth-shaped end face of the transmission shaft main body is in fit connection with the inner polygonal bearing part arranged on the inner diameter side of the metal joint, the transmission of torque is realized by adopting a non-circular section, and the torque bearing capacity of the composite material transmission shaft can be further enhanced;
(4) the length of the winding mandrel is longer than that of the transmission shaft main body, so that the effective reserved length of the winding structure after machining is ensured, the reserved yarn returning section is cut off after solidification is completed, and the change of the structure stress form caused by yarn returning accumulation and linear disorder at two ends of a fiber winding process can be avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the exploded structure of FIG. 1;
FIG. 3 is a sectional view of a portion of the structure of FIG. 1;
FIG. 4 is a schematic view of a metal joint structure according to the present invention;
FIG. 5 is a schematic view of the structure of the metal liner of the present invention;
FIG. 6 is a schematic view of a main structure of a transmission shaft according to the present invention;
wherein, 1, metal joint; 11. a second toothed end surface; 12. an inner polygonal receiving portion; 2. a metal inner sleeve; 21. a flange; 22. a first insertion portion; 23. a second insertion portion; 3. a drive shaft body; 31. a first toothed end surface; 32. a polygonal insertion part; 33. a shaft body portion.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The invention aims to provide a manufacturing method of a composite material transmission shaft and the composite material transmission shaft thereof, which are used for solving the problems in the prior art.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.
Referring to fig. 1 to 6, the present invention provides a method for manufacturing a composite material transmission shaft, including the steps of:
before fiber winding, according to key design index requirements such as transmission torsion load bearing and transmission shaft critical rotating speed, corresponding structural design optimization work is carried out, a corresponding winding angle is designed, and the relevant size of the fiber winding transmission shaft main body 3 is determined according to requirements such as use space; manufacturing a transmission shaft main body 3 on a winding mandrel in a fiber winding mode according to related design sizes, and reserving a fiber back yarn section at the end part of the transmission shaft main body 3;
curing the wound transmission shaft main body 3 by using resin, feeding the wound transmission shaft main body 3 into a curing furnace during curing, and performing curing operation according to the curing process requirement of the used resin;
cutting off a reserved fiber yarn returning section, and processing a connecting part at the end part of the cut transmission shaft main body 3, wherein the connecting part can comprise a first tooth-shaped end surface 31, a polygonal inserting part 32 and other structures so as to be better connected with the metal joint 1;
determining the type and type of an adhesive according to the conditions such as bearing connection strength requirements and use conditions, determining the structural size of the metal joint 1 according to the design condition of winding fibers, optimizing the polygonal size of a polygonal inserting part 32 of a connecting part during machining of a composite material layer according to the connection strength requirements of two ends by combining parameters such as the material and the adhesive bonding strength of the metal joint 1, and optimizing and designing the angles and the related structural sizes of a first tooth-shaped end face 31 and a second tooth-shaped end face 11 of a composite material and a metal material in order to enhance the connection tightness of the transmission shaft main body 3 and the metal joint 1; according to the designed structure and size, a metal joint 1 is bonded and connected on the connecting part, and a metal inner sleeve 2 is inserted and bonded between the connecting part and the metal joint 1; in order to enhance the bonding strength between the metal joint 1 and the composite material layer, the inner side and the outer side of the composite material layer are pasted, and the bonding length of the metal inner sleeve 2 is optimized.
According to the size of the fiber winding transmission shaft main body 3 which is optimally designed, the size of a proper winding mandrel is determined, namely the length of the winding mandrel is longer than that of the transmission shaft main body 3, the mandrel deflection caused by the whole weight of a wound part is not large, the transmission shaft can bear large torque and impact load due to excessive deflection during working, high-speed rotation is carried out, along with continuous vibration, the lubricating condition is poor, abrasion, deformation and damage are easy to generate, and faults such as torsional vibration and shaking can occur. The length of the winding mandrel is longer than that of the transmission shaft main body 3, so that the effective reserved length of the winding structure after machining is ensured, the reserved yarn returning section is cut off after solidification is completed, and the change of the structure stress form caused by yarn returning accumulation and linear disorder at two ends of a fiber winding process can be avoided.
A first tooth-shaped end face 31 is processed at the connecting part of the transmission shaft main body 3, the first tooth-shaped end face 31 is meshed with the second tooth-shaped end face 11 of the metal joint 1, a polygonal inserting part 32 is processed at the inner diameter side of the first tooth-shaped end face 31, and the polygonal inserting part 32 is attached and connected with the inner polygonal receiving part 12 of the metal joint 1. After the structure is processed, the metal inner sleeve 2 can be used as an intermediate structure to realize effective connection between the transmission shaft main body 3 and the metal joint 1, and the interface shear strength bearing capacity between the transmission shaft main body 3 and the metal joint 1 can be improved; the tooth-shaped structures or lug plate structures on the first tooth-shaped end surface 31 and the second tooth-shaped end surface 11 bear certain shearing force, so that the bearing capacity of the torque of the composite material transmission shaft is enhanced; the polygonal inserting part 32 of the transmission shaft main body 3 is attached and connected with the inner polygonal bearing part 12 arranged on the inner diameter side of the metal joint 1, the transmission of torque is realized by adopting a non-circular section, and the torque bearing capacity of the composite material transmission shaft can be further enhanced.
As shown in fig. 1 to 3, the present invention further provides a composite material transmission shaft, which can be manufactured by the manufacturing method described above, and includes a transmission shaft main body 3 made of a composite material, wherein the transmission shaft main body 3 has the advantages of light weight, corrosion resistance, good fatigue performance, etc., and the length and diameter thereof are reasonably set according to actual working conditions. One end or both ends of the transmission shaft main body 3 are provided with connecting parts for connecting the metal joint 1, the transmission shaft main body 3 comprises a shaft body part 33 and a connecting part connected with the shaft body part 33, the connection refers to the integral forming of the shaft body part 33 and the connecting part, namely, the integral manufacturing is carried out at the manufacturing stage of fiber winding of the transmission shaft main body 3, and the mechanical processing can be carried out subsequently, but the connection is not carried out by adopting other connecting modes such as bonding and the like. Connecting portion internal diameter side and metal joint 1 internal diameter side cover are equipped with same metal endotheca 2, the external diameter size of metal endotheca 2 is the same with connecting portion internal diameter size and metal joint 1 internal diameter size rather than being connected respectively, and insert the certain degree of depth of internal diameter side respectively, metal endotheca 2 can closely laminate with metal joint 1 and connecting portion respectively, and be provided with the gluing agent between connecting the face, make connecting portion and metal joint 1 all with metal endotheca 2 adhesive connection, in addition, set up the gluing agent between connecting portion and metal joint 1, realize connecting portion and metal joint 1 adhesive connection. According to the invention, the metal inner sleeve 2 is arranged between the transmission shaft main body 3 made of the composite material and the metal joint 1, the metal inner sleeve 2 is respectively inserted and bonded on the inner diameter side of the transmission shaft main body 3 and the inner diameter side of the metal joint 1, and the transmission shaft main body 3 and the metal joint 1 are bonded and connected, so that the metal inner sleeve 2 is used as an intermediate structure to realize effective connection between the transmission shaft main body 3 and the metal joint 1, and the interface shear strength bearing capacity between the transmission shaft main body 3 and the metal joint 1 can be improved.
As shown in fig. 5 in conjunction with fig. 3, the metal inner sleeve 2 includes a flange 21 and a first insertion portion 22 and a second insertion portion 23 disposed on both sides of the flange 21, and the metal inner sleeve 2 may be obtained by machining a thick-walled tube or welding the flange 21 to the first insertion portion 22 and the second insertion portion 23 by welding. The first insertion portion 22 and the second insertion portion 23 may be hollow structures and have a certain length, the length is designed according to the length of the metal joint 1 and the length of the connecting portion and according to the load bearing condition, the first insertion portion 22 and the second insertion portion 23 are respectively inserted into the connecting portion of the metal joint 1 and the transmission shaft main body 3, two surfaces of the flange 21 respectively abut against the metal joint 1 and the connecting portion, and the depth of the flange 21 respectively inserted into the metal joint 1 and the depth of the connecting portion are limited, so that the installation result meets the design requirement.
As shown in fig. 5, the end of the first insertion portion 22 and/or the second insertion portion 23 has a taper, the first insertion portion 22 can be conveniently inserted into the metal joint 1 through the taper, the second insertion portion 23 can be conveniently inserted into the connection portion of the transmission shaft main body 3, so that the outer diameter of the first insertion portion 22 and/or the second insertion portion 23 can be more fit to the inner diameter of the inserted position, the tight fit of the insertion connection can be realized, the effective fixed connection among the metal joint 1, the metal inner sleeve 2 and the transmission shaft main body 3 can be realized by combining the function of the adhesive, and therefore, the interface shear strength bearing capacity between the transmission shaft main body 3 and the metal joint 1 can be improved, and the bearing capacity of the torque can be improved.
As shown in fig. 3, the transmission shaft main body 3 may be a hollow structure, that is, the transmission shaft main body 3 is a pipe structure with a certain wall thickness, and the whole transmission shaft main body is a hollow structure in the axial direction, and the hollow structure can further reduce the weight of the transmission shaft main body 3.
Further, the transmission shaft body 3 may be manufactured by filament winding, that is, after filament winding, the resin is cured to complete the integral molding.
As shown in fig. 4 and 6 in combination with fig. 1 to 2, the connecting portion of the transmission shaft main body 3 includes a first tooth-shaped end surface 31, the first tooth-shaped end surface 31 includes a tooth-shaped structure or a lug plate structure, the metal joint 1 includes a second tooth-shaped end surface 11, the second tooth-shaped end surface 11 includes another tooth-shaped structure or a lug plate structure, the first tooth-shaped end surface 31 is meshed with the second tooth-shaped end surface 11 to form a tooth-shaped meshing or a cross-lug meshing, and connection between the transmission shaft main body 3 and the metal joint 1 is achieved. The tooth-shaped structure or the ear plate type structure on the first tooth-shaped end surface 31 and the second tooth-shaped end surface 11 can bear certain shearing force, and the bearing capacity of the torque of the transmission shaft main body 3 made of the composite material is enhanced.
As shown in fig. 6, the inner diameter side of the first tooth-shaped end surface 31 is provided with a polygonal socket portion 32 having a cross section of a pentagonal shape, a hexagonal shape or other polygonal shapes, as shown in fig. 4, the inner diameter side of the metal joint 1 is provided with an inner polygonal socket portion 12 having a cross section corresponding to the polygonal shape of the polygonal socket portion 32, and after the polygonal socket portion 32 is socket-connected to the inner polygonal socket portion 12, each side surface of the polygonal socket portion 32 is in contact connection with each side surface of the inner polygonal socket portion 12, so that torque transmission can be achieved with a non-circular cross section, and the torque capacity of the composite material transmission shaft can be further enhanced.
The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.
Claims (10)
1. The manufacturing method of the composite material transmission shaft is characterized by comprising the following steps of:
manufacturing a transmission shaft main body on a winding mandrel in a fiber winding mode, and reserving a fiber back yarn section at the end part of the transmission shaft main body;
curing the wound transmission shaft main body with resin;
cutting off the reserved fiber yarn returning section, and processing a connecting part at the end part of the cut transmission shaft main body;
and a metal joint is bonded on the connecting part, and a metal inner sleeve is inserted and bonded between the connecting part and the metal joint.
2. The method of making a composite drive shaft of claim 1, wherein: the method comprises the steps of determining the size of a winding mandrel according to the design size of a transmission shaft main body, wherein the length of the winding mandrel is longer than that of the transmission shaft main body.
3. The method of manufacturing a composite material drive shaft according to claim 1 or 2, characterized in that: and processing a first toothed end face on the connecting part, wherein the first toothed end face is meshed with the second toothed end face of the metal joint, processing a polygonal inserting part on the inner diameter side of the first toothed end face, and the polygonal inserting part is attached and connected with the inner polygonal bearing part of the metal joint.
4. A composite material drive shaft characterized by: the transmission shaft comprises a transmission shaft main body made of composite materials, wherein the transmission shaft main body is provided with a connecting part used for connecting a metal joint, the inner diameter side of the connecting part is sleeved with the inner diameter side of the metal joint and is provided with the same metal inner sleeve, the connecting part is connected with the metal joint in a bonding mode, and the connecting part is connected with the metal joint in a bonding mode.
5. The composite drive shaft of claim 4, wherein: the metal inner sleeve comprises a flange, a first insertion part and a second insertion part, the first insertion part and the second insertion part are arranged on two sides of the flange, the first insertion part and the second insertion part are respectively inserted into the metal joint and the connecting part, and two surfaces of the flange are respectively abutted against the metal joint and the connecting part.
6. The composite drive shaft of claim 5, wherein: the end of the first and/or second insert portion has a taper.
7. The composite drive shaft of claim 4, wherein: the transmission shaft main body is of a hollow structure.
8. The composite drive shaft of claim 4, wherein: the transmission shaft main body is manufactured in a fiber winding mode.
9. The composite drive shaft according to any one of claims 4 to 8, characterized in that: the connecting part comprises a first tooth-shaped end face, the metal joint comprises a second tooth-shaped end face, and the first tooth-shaped end face is meshed with the second tooth-shaped end face.
10. The composite drive shaft of claim 9, wherein: the inner diameter side of the first tooth-shaped end face is provided with a polygonal inserting portion, the inner diameter side of the metal joint is provided with an inner polygonal bearing portion, and each side face of the polygonal inserting portion is connected with each side face of the inner polygonal bearing portion in an attaching mode.
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| CN202111221874.6A CN113942248B (en) | 2021-10-20 | 2021-10-20 | Manufacturing method of composite material transmission shaft and composite material transmission shaft |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111221874.6A CN113942248B (en) | 2021-10-20 | 2021-10-20 | Manufacturing method of composite material transmission shaft and composite material transmission shaft |
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| CN113942248A true CN113942248A (en) | 2022-01-18 |
| CN113942248B CN113942248B (en) | 2022-06-21 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113006585A (en) * | 2021-04-30 | 2021-06-22 | 华北电力大学（保定） | Composite cross arm structure |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113006585A (en) * | 2021-04-30 | 2021-06-22 | 华北电力大学（保定） | Composite cross arm structure |
| CN113006585B (en) * | 2021-04-30 | 2022-05-06 | 华北电力大学（保定） | Composite cross arm structure |
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