发明名称 |
DISK BRAKE AND METHOD OF MANUFACTURING IT |
摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a disk brake capable of preventing a cylinder strength from being lowered and enabling an improvement in the appearance quality without increasing product cost and deteriorating products with time by dissipating dents produced at the end position of a friction-stirring welding without filling another member therein and a method of manufacturing the disk brake. <P>SOLUTION: An opening is formed at the bottom of the bore 26 of a caliper body 46. A thick wall part 52 projecting to the axial outer side of the bore 26 is formed at the peripheral edge part of the opening. A tapered surface 53 tilting from the top of the thick wall part on the radial outer side toward the opening side is formed at the thick wall part 52. A cover member 43 is joined to the opening by friction-stirring welding. The end position of the friction-stirring welding is extended onto the tapered surface 53 of the thick wall part 52. The dents 57 of a tool is removed by cutting off the thick wall part 52. <P>COPYRIGHT: (C)2008,JPO&INPIT</p> |
申请公布号 |
JP2007285344(A) |
申请公布日期 |
2007.11.01 |
申请号 |
JP20060110836 |
申请日期 |
2006.04.13 |
申请人 |
HITACHI LTD |
发明人 |
NANRI KEISUKE;IWAHASHI YOSHIKI;SATO TOMOJI |
分类号 |
F16D65/02;B23K20/12;B23K103/10;F16D55/224 |
主分类号 |
F16D65/02 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|