The present invention relates to a CFRP drive shaft manufacturing method for a vehicle. The present invention comprises: a joint part molding process (S10) of forming a stub shaft (110) by integrally molding a joint part (113) formed of a polygonal inner shape on the inner circumferential surface of an insertion part (112) while casting-molding the stub shaft (110); a tube sheet forming process (S20) of forming a tube sheet by stacking prepreg formed by impregnating carbon fibers in resin to a predetermined thickness; a tube body forming process (S30) of winding the tube sheet into a cylindrical shape to seal an edge part and form a tube body; a preliminary tube forming process (S40) of cutting the tube body to correspond to the length of the shaft tube to form a preliminary tube; a joint tube forming process (S50) of forming a shaft tube (120) by putting both ends of the preliminary tube into a hot press and integrally molding a joint tube (121), which is formed with the appearance and interior of a polygonal shape corresponding to the joint unit (113), at the both ends of the preliminary tube; and a bonding step (S60) of applying an adhesive means to the outer circumferential surface of the joint tube (121) of the shaft tube (120), and inserting and fixating the same into the joint part (113) of the stub shaft (110) to fix. The present invention is able to conveniently manufacture a drive shaft which has a solid coupling structure between a stub shaft and a shaft tube made of different materials.
본 발명은 자동차용 CFRP 드라이브샤프트 제조방법에 관한 발명으로, 스텁샤프트(110)를 주조 성형하되 삽입부(112)의 내주면에 다각형상의 내형으로 이루어진 접합부(113)를 일체로 성형하여 스텁샤프트(110)를 형성하는 접합부성형공정(S10); 탄소섬유를 수지에 함침하여 형성하는 프리프레그를 일정 두께로 적층하여 튜브시트를 형성하는 튜브시트형성공정(S20); 튜브시트를 원통체 형상으로 권취하여 엣지부를 봉합하고 튜브체를 형성하는 튜브체형성공정(S30); 튜브체를 샤프트튜브 길이에 상응하도록 절단하여 예비튜브를 형성하는 예비튜브형성공정(S40); 예비튜브의 양단을 핫 프레스에 투입하고, 상기 접합부(113)에 상응하는 다각형상의 외형 및 내형으로 이루어진 접합튜브(121)를 양단에 일체로 성형하여 샤프트튜브(120)를 형성하는 접합튜브성형공정(S50); 및 샤프트튜브(120)의 접합튜브(121) 외주면에 접착수단을 도포하고 스텁샤프트(110)의 접합부(113)에 삽입하여 고정하는 결합공정(S60);를 포함하여 이루어짐에 따라 이종 재질로 이루어진 샤프트튜브와 스텁샤프트 간에 견고한 결합구조를 구현하는 드라이브샤프트를 간편하게 제조하도록 하는 것이 특징이다.
CFRP MANUFACTURING METHOD OF CARBON FIBER REINFORCED PLASTIC DRIVE SHAFT FOR VEHICLE
자동차용 CFRP 드라이브샤프트 제조방법
2020-03-04
Patent
Electronic Resource
Korean
IPC: | B29C Formen oder Verbinden von Kunststoffen , SHAPING OR JOINING OF PLASTICS / B22D CASTING OF METALS , Gießen von Metallen / B29L INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES , Index-Schema für besondere Gegenstände in Verbindung mit Unterklasse B29C / B60K Anordnung oder Einbau von Antriebseinheiten oder von Kraft- bzw. Drehmomentübertragungen in Fahrzeugen , ARRANGEMENT OR MOUNTING OF PROPULSION UNITS OR OF TRANSMISSIONS IN VEHICLES |
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