JPS61148514U - - Google Patents

Description

【図面の簡単な説明】[Brief explanation of the drawing]

第１図はこの考案の一実施例に係るガンリーマ
ドリルの全体図、第２は第１図に示したガンリー
マドリルの先端部の拡大図である。 １……本体、４……チツプ部、５ａ〜５ｆ……
第１の切刃部、６ａ〜６ｆ……第２の切刃部、７
……溝、８ａ〜８ｃ……油供給口。 FIG. 1 is an overall view of a gan reamer drill according to an embodiment of the invention, and FIG. 2 is an enlarged view of the tip of the gan reamer drill shown in FIG. 1. 1... Main body, 4... Chip part, 5a to 5f...
First cutting edge portion, 6a to 6f...Second cutting edge portion, 7
...Groove, 8a to 8c...Oil supply port.

補正 昭６１．４．８ 図面の簡単な説明を次のように補正する。 明細書第８頁第１８行目に「第２は」とあるの
を「第２図は」に補正します。Amendment April 8, 1981 The brief description of the drawing is amended as follows. On page 8, line 18 of the specification, the phrase "2nd wa" will be corrected to ``Figure 2 wa''.

Claims (1)

【実用新案登録請求の範囲】 棒状本体の外周に略軸方向に沿つて第１の切刃
部と切屑排出用の溝を備えるとともに、前記第１
の切刃部と連結し、本体半径方向外周に向けて延
びる第２の切刃部を備え、かつ本体内部を軸方向
に貫通して少なくとも本体先端で開口する油供給
孔が形成されたガンリーマドリルにおいて、 前記第２の切刃部の本体半径方向外周のきり角
を本体中心側のきり角よりも大きく設定したこと
を特徴とするガンリーマドリル。[Claims for Utility Model Registration] A first cutting edge portion and a groove for discharging chips are provided on the outer periphery of the rod-shaped main body along the substantially axial direction, and
A gun reamer comprising a second cutting edge connected to the cutting edge of the main body and extending toward the outer periphery in the radial direction of the main body, and an oil supply hole that penetrates the inside of the main body in the axial direction and opens at least at the tip of the main body. A gun reamer drill, characterized in that a cut angle on the outer periphery of the second cutting edge in the radial direction of the main body is set larger than a cut angle on the center side of the main body.