METHOD FOR CALKING AND JOINING SHAFT AND THIN-WALL TUBE

摘要

PURPOSE:To improve adhesion between both a thin-wall tube and a shaft by cold-forging peripheral grooves and axial grooves on the outer periphery of the joint of the shaft when the thin-wall pipe is joined to the shaft. CONSTITUTION:The axial groove parts 4 and the peripheral groove parts 6 are cold-forged for calking on the outer periphery of the joint between the shaft 1 and the thin-wall tube 2. The thin-wall tube 2 engages with the shaft 1 to be calked at two calked parts 3, 5. Consequently, formability between the shaft and the tube is good, strong adhesion is obtained, visual check is enough for the product inspection after working, torque check is not required, high-quality joining can be obtained.