Invention Grant
- Patent Title: Punch tool device and method of supplying lubricating oil
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Application No.: US13264028Application Date: 2010-04-12
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Publication No.: US09669450B2Publication Date: 2017-06-06
- Inventor: Hiroshi Nakai
- Applicant: Hiroshi Nakai
- Applicant Address: JP Kanagawa
- Assignee: AMADA COMPANY, LIMITED
- Current Assignee: AMADA COMPANY, LIMITED
- Current Assignee Address: JP Kanagawa
- Agency: Greenblum & Bernstein, P.L.C.
- Priority: JP2009-099247 20090415; JP2010-002004 20100107
- International Application: PCT/JP2010/056527 WO 20100412
- International Announcement: WO2010/119839 WO 20101021
- Main IPC: B21D28/02
- IPC: B21D28/02 ; B21D37/18 ; B21D28/34

Abstract:
A punch tool device vertically that is movably mounted in a punch mounting hole formed in a punch holder of a punch press includes: a punch body vertically movably provided inside a tubular punch guide vertically movably mounted in a punch mounting hole and, the punch body includes a punch edge section in its lower end portion. An elastic member is provided between the punch guide and a punch head provided on an upper end portion of a punch driver provided above the punch body. A supported section is supported by a lifter spring provided to the punch holder, is provided on an outer peripheral surface of the punch guide; and a lubricating oil path is provided in the outer peripheral surface of the punch guide so as to communicate with a lubricating oil supply path formed in the punch body, the lubricating oil path provided to be capable of coming into and out of communication with a lifter spring containing hole which contains the lifter spring.
Public/Granted literature
- US20120031245A1 PUNCH TOOL DEVICE AND METHOD OF SUPPLYING LUBRICATING OIL Public/Granted day:2012-02-09
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