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Special-shaped composite material shaft, preparation method thereof, and connecting method of special-shaped composite material shaft and metal couplings

A composite material and special-shaped technology, which is applied in the field of its preparation and special-shaped composite material shaft, can solve the problems of destroying fiber continuity, affecting product performance, and weak torsion resistance.

Active Publication Date: 2017-11-28
BEIJING AUTOMOTIVE IND CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The main disadvantages of the two connection methods: through bolts and other connection methods, holes need to be drilled on the surface of the carbon fiber, which destroys the continuity of the fiber, and there is stress concentration at the connection point, which affects product performance; The space is mainly connected and fixed by resin, and the torsion resistance is weak

Method used

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  • Special-shaped composite material shaft, preparation method thereof, and connecting method of special-shaped composite material shaft and metal couplings
  • Special-shaped composite material shaft, preparation method thereof, and connecting method of special-shaped composite material shaft and metal couplings
  • Special-shaped composite material shaft, preparation method thereof, and connecting method of special-shaped composite material shaft and metal couplings

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preparation example Construction

[0036] In the preparation method according to the present disclosure, the prepreg tape (or prepreg) is conventional in the art, and may contain reinforcing fibers and thermosetting resins, which means impregnating continuous fibers or fabrics with a resin matrix under strictly controlled conditions ( Especially tape-shaped reinforced fiber fabric), made of resin matrix and reinforcement composition. Wherein, the type of reinforcing fiber has no special requirements, and it can be the type of reinforcing fiber commonly used in the field of composite materials. For example, the reinforcing fiber can be selected from carbon fiber, ultra-high molecular weight polyethylene fiber, aramid fiber, basalt fiber and glass fiber. one or several. The aforementioned types of reinforcing fibers have high strength, good weavability, and good compatibility with thermosetting resins.

[0037] In the method according to the present disclosure, the thermosetting resin can be a thermosetting resi...

Embodiment 1

[0044] This embodiment is used to illustrate the preparation method of the special-shaped composite material shaft and the connection method between the metal flange and the composite material shaft of the present disclosure. The shape of the special-shaped composite material shaft is as follows figure 1 As shown, it includes a hollow shaft body section 1 and end connection sections 2 at both ends, the number of fixing protrusions 3 on each end connection section 2 is four, and the first inflatable mandrel 5 and the second inflatable mandrel 6 The shape of the assembled mandrel body is as follows figure 2 shown.

[0045] Respectively process the first inflatable mandrel 5 and eight second inflatable mandrels 6 of the illustrated shape and assemble them into figure 2 As shown in the mandrel body, a prepreg tape (purchased from SGL, brand name SIGRAFIL CT50-4.0 / 240-E100) was wound on the surface of the mandrel body, and 4 layers were wound to obtain a preform.

[0046] Put t...

Embodiment 2

[0050] This example is used to illustrate the preparation method of the special-shaped composite material shaft and the connection method between the metal flange and the composite material shaft of the present disclosure. The number of protrusions is 6, and the special-shaped composite material shaft of this embodiment is obtained.

[0051] The end connecting portion of the special-shaped composite material shaft was inserted into the metal flange matching the connecting hole, and the maximum torque of the connecting structure was measured to be 643N·m.

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Abstract

The invention relates to a special-shaped composite material shaft, a preparation method thereof, and a connecting method of the special-shaped composite material shaft and metal couplings. According to the preparation method, a method including winding inflatable and deflatable central spindles with a prepreg tape and curing molding is adopted, a first inflating central spindle and a second inflating central spindle are formed and arranged, the prepreg tape is used for winding the central spindles in an inflating state, then the second inflating central spindle is squeezed to tension the prepreg tape and enable the prepreg tape to be adhered to the surface of the first inflating central spindle. According to the method, the special-shaped composite material shaft provided with bulges can be prepared; bulge parts and a shaft body are enhanced by continuously winding the prepreg tape; and the prepared composite material shaft is high in strength and good in performance, and can be connected with the metal couplings. According to the connecting method of the metal couplings and the composite material shaft, the bulges at two ends of the composite material shaft are inserted into connecting holes of the metal couplings, the defect that bolts and other connection manners influence product performance is avoided, and the method has the advantages of high connecting strength, stable structure and strong torsion resistance.

Description

technical field [0001] The present disclosure relates to the technical field of composite material shaft preparation, and in particular, relates to a special-shaped composite material shaft, a preparation method thereof, and a connection method with a metal flange. Background technique [0002] The carbon fiber composite material shaft is mainly manufactured by winding process. In order to realize the connection with the metal parts, a metal flange needs to be installed at the end. There are two main ways to install metal flanges, one is to drill holes on the carbon fiber shaft and then use bolts or rivets to connect, the other is to pre-embed the flange in the carbon fiber preform before the carbon fiber shaft is solidified, and the resin is cured later form a whole. [0003] The main disadvantages of the two connection methods: through bolts and other connection methods, it is necessary to drill holes on the surface of the carbon fiber, destroying the continuity of the fi...

Claims

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Application Information

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IPC IPC(8): B29C70/30B29C70/54F16C3/02F16D1/06
CPCF16C3/02F16D1/06B29C70/30B29C70/54
Inventor 李文博
Owner BEIJING AUTOMOTIVE IND CORP
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