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Title:
ELECTRIC RECIPROCATING TOOL
Document Type and Number:
WIPO Patent Application WO/2001/074522
Kind Code:
A1
Abstract:
An electric reciprocating tool, wherein, when the electric reciprocating tool is applied to a cutting machine, a movable blade (13) is provided reciprocably on a tool main body, a support plate (20) supporting a section steel (30) to be cut is supported on the tool main body at the front of the movable blade (13), the movable blade is fixed to the tip of a bar-shaped shuttle screw (12), shuttle screw (12) is axially moved forward and backward inside a tube-like screw shaft (11), the screw shaft (11) is rotated by a joint spindle (9) having a female screw part (11d) formed therein and allowing the speed of rotation transmitted from a motor (5) to be rotatingly reduced through a speed reduction means (8), the shuttle screw (12) comprises a male screw part (12b) threaded with the female screw part (11d), and, when the screw shaft (11) is rotated, the shuttle screw (12) is moved forward and backward by the engagement of the female screw part (11d) with the male screw part (12b) to move forward and backward the movable blade (13) relative to the receive plate (20) so as to cut off the section steel (30), whereby the electric reciprocating tool simple in entire structure and large in forward and backward moving forces can be provided at a low cost.

Inventors:
YOSHIMIZU CHIKAI (JP)
KIKUMOTO MASAO (JP)
SHIMADA TAKAHIKO (JP)
Application Number:
PCT/JP2001/000757
Publication Date:
October 11, 2001
Filing Date:
February 02, 2001
Export Citation:
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Assignee:
HITACHI KOKI KK (JP)
YOSHIMIZU CHIKAI (JP)
KIKUMOTO MASAO (JP)
SHIMADA TAKAHIKO (JP)
International Classes:
B23D15/04; B23D15/12; B23D29/00; B25B27/10; B25B27/14; (IPC1-7): B23D29/00
Foreign References:
JPH06315730A1994-11-15
JPH11347831A1999-12-21
DE19526070A11997-01-23
JPH06198574A1994-07-19
JPS61130555A1986-06-18
JPS58500470A1983-03-31
JPH0169474U1989-05-09
JPH07223113A1995-08-22
Attorney, Agent or Firm:
Kitazawa, Kazuhiro (Yushima 3-chome Bunkyo-ku Tokyo, Yushima 3-chome Bunkyo-ku Tokyo, JP)
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