| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a punch die which includes a function of supplying oil mist to a lifter spring provided on a punching press. <P>SOLUTION: In the punch die which is vertically movably mounted in a punch mounting hole 5 formed on a punch holder 3 of the punch press, a punch body 41 having a punch edge section 101 at the lower end thereof is vertically movably provided in a tubular punch guide 17 which is vertically movably mounted in the punch mounting hole 5, an elastic member 35 is provided between the punch guide 17 and a punch head 33 at the upper end of a punch driver 31 provided to the upper part of the punch body 41, a supported section 19 which is supported by the lifter spring 7 provided on the punch holder 3 is provided on the outer peripheral surface of the punch guide 17, a lubricating oil path 93U which communicates with a lubricating oil supply path 83 formed on the punch body 41 is provided on the outer peripheral surface of the punch guide 17, and the lubricating oil path 93U can be communicated with and interrupted from a lifter spring containing hole 9 in which the lifter spring 7 is housed. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
