Automobile transmission shaft with thin walled tube and manufacturing method thereof

• Main Authors: ZHANG YIHE, WANG LI, LIU KEJUN, ZOU DEZHI, ZHOU MINGWEN, DUAN CHAOHUI, YUAN LIGUO, CHEN XIAOMEI, LI PENG, LI QINGCHEN, WANG LIJUN, ZHENG SHUDONG, ZHAO WEI, ZHANG JIANZHEN, CHEN CHENGKUI
• Format: Patent
• Language: Chinese; English
• Published: 11.05.2011
• Subjects: BEARINGS; BLASTING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; ELEMENTS OR CRANKSHAFT MECHANISMS; ENGINEERING ELEMENTS AND UNITS; FLEXIBLE SHAFTS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS; HEATING; LIGHTING; MACHINE TOOLS; MECHANICAL ENGINEERING; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; SHAFTS; SOLDERING OR UNSOLDERING; THERMAL INSULATION IN GENERAL; TRANSPORTING; WEAPONS; WELDING; WORKING BY LASER BEAM

The invention discloses an automobile transmission shaft with a thin walled tube and a manufacturing method thereof. The automobile transmission shaft with the thin walled tube is characterized in that one end of the shaft tube of the thin walled transmission shaft is sleeved on a spline housing, and the other end of the shaft tube is connected with a welding fork, and the wall thickness of the shaft tube of the transmission shaft is 3.5-4.0mm. The mechanical properties of a welding wire are as follows: the tensile strength Rm is 500-700MPa, the yield strength Rp 0.2 is 420-550MPa, the elongation percentage A5 is 22-35 percent and the compact power Akv under -29 DEG C is 30-120J; the mechanical properties of the material of the transmission shaft are as follows: the Rp 0.2 is not smaller than 600MPa, the Rm is not smaller than 700MPa, and A5 is not smaller than 13 percent; and the weight of an automobile transmission shaft assembly with thin walled tube is reduced by 4.4-9.3 percent.