| 摘要 |
The invention relates to a stabilizer bar and a method and an apparatus for manufacturing the same. The stabilizer bar, which is manufactured from a metallic tube (1) by bending, comprises a central portion (2) and at least two bent portions forming legs (3), each of which forms an angle with the central portion of the tube. According to the invention the tube is a thick-walled metallic tube having a ratio between the wall thickness and the tube diameter of at least 1/10. The outer wall of the tube has a thinning ranging from about 5 to 15 % at the bent portion, the average bending radius being from about 1.4 to 2.1 times the tube diameter. The tube is bent by means of induction heating technique, the bending movement being attenuated by a force sufficient to move the flexure plane in radial direction away from the bending centre and causing a thinning of from about 5 to 15 %, preferably about 10 % of the outside wall of the metallic wall at the bent portion. Stabilizer bars in accordance with invention have a good roll stiffness and are suitable for use on heavy vehicles, like trucks. |
