| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a manufacturing method for a disc brake, capable of reducing the possibility of a frictional stirring part to influence the installed condition of a piston. <P>SOLUTION: A plane part 17c is formed on the annular bottom wall 50 side of the piston 17, and a supporting member 80 having an abutting outside diameter to the annular bottom wall 50 greater than the outside diameter of the piston plane part is inserted into a bore 26 and abutted on the annular bottom wall 50 from inside the bore 26, and a lid member 43 whose annular bottom wall 50 side has the same wall thickness as the annular bottom wall 50 and which has an outside diameter approximately the same as the inside diameter of an opening 45, is inserted into the opening 45 and abutted on the supporting member 80, and the lid member 43 and the annular bottom wall 50 are joined together through frictional stirring joining. <P>COPYRIGHT: (C)2010,JPO&INPIT</p> |
