PUNCH DIE AND METHOD OF SUPPLYING LUBRICATING OIL

Title:

PUNCH DIE AND METHOD OF SUPPLYING LUBRICATING OIL

Document Type and Number:

WIPO Patent Application WO/2010/119839

Kind Code:

A1

Abstract:

A punch die which is vertically movably mounted to a punch mounting hole (5) formed in a punch holder (3) of a punch press, wherein a punch body (41) which has a punch edge section (101) at the lower end thereof is vertically movably provided within a tubular punch guide (17) which is vertically movably mounted within 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 a lifter spring (7) provided to the punch holder (3) is provided to the outer peripheral surface of the punch guide (7), a lubricating oil path (93U) which communicates with a lubricating oil supply path (83) formed in the punch body (41) is provided to 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) which contains the lifter spring (7).

More Like This:

JPH0677923	[Name of device] Punching punch blades and punch dies
JPH02258120	BOTTOM PUNCHING DIE FOR BOTTOMED CYLINDRICAL WORK HAVING SIZING FUNCTION

Inventors:

NAKAI HIROSHI (JP)

Application Number:

PCT/JP2010/056527

Publication Date:

October 21, 2010

Filing Date:

April 12, 2010

Export Citation:

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Assignee:

AMADA CO LTD (JP)
NAKAI HIROSHI (JP)

International Classes:

B21D28/34; B21D37/18

Domestic Patent References:

WO2006054694A1

2006-05-26

Foreign References:

JP3051596U	1998-08-25
JP2002153922A	2002-05-28
JPH0324320A	1991-02-01
JPH0444260A	1992-02-14
JPS61172632A	1986-08-04
JP2009099247A	2009-05-07
JP2010002004A	2010-01-07

Other References: