Title:
HOLE DRILLING AUXILIARY DEVICE FOR CORE DRILL
Document Type and Number:
Japanese Patent JP3782020
Kind Code:
B
Abstract:
PROBLEM TO BE SOLVED: To provide a hole drilling auxiliary device for a core drill capable of eliminating blurring of shaft axis of a core body and a center drill and performing deep hole drilling work efficiently and accurately without depending on the height of the core drill.
SOLUTION: This hole drilling auxiliary device is detachably mounted in the core body A of the core drill. A projection 2 abutting on an inner peripheral face a of the core body is provided at peripheral fringe of an auxiliary basic plate 1, and a bush 3 having a drill fitting and inserting hole 4 in which a center drill B is fitted and inserted and which supports the center drill B is mounted at the center of the auxiliary basic plate 1.
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Inventors:
Miyanaga, Masaaki
Application Number:
JP2002000039593
Publication Date:
March 17, 2006
Filing Date:
February 18, 2002
Export Citation:
Assignee:
MIYANAGA:KK
International Classes:
B23B51/04; B23B49/02; B28D1/14; B23B51/04; B23B49/00; B28D1/14; (IPC1-7): B23B51/04; B28D1/14