JPH0171012U - - Google Patents
Info
- Publication number
- JPH0171012U JPH0171012U JP1987167991U JP16799187U JPH0171012U JP H0171012 U JPH0171012 U JP H0171012U JP 1987167991 U JP1987167991 U JP 1987167991U JP 16799187 U JP16799187 U JP 16799187U JP H0171012 U JPH0171012 U JP H0171012U
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- rake face
- cutting blade
- blade
- cutting edge
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Drilling Tools (AREA)
Description
第１図は本考案に係る二枚刃ガンドリルの側面
図、第２図は第１図のＡ方向矢視図、第３図は切
削時に作用する力の方向を示した図、第４図は従
来のガンドリルに作用する力の方向を示した図で
ある。
尚、図面中、１はガンドリル、２は第１の切刃
、２ａ，３ａは外切刃、２ｂ，３ｂは内切刃、３
は第２の切刃、４，５はバニツシユ部、７，８は
すくい面、９はパツドである。
Fig. 1 is a side view of the two-flute gun drill according to the present invention, Fig. 2 is a view taken in the direction of arrow A in Fig. 1, Fig. 3 is a diagram showing the direction of the force acting during cutting, and Fig. 4 is a diagram showing the direction of the force acting during cutting. FIG. 2 is a diagram showing the direction of force acting on a conventional gun drill. In the drawings, 1 is a gun drill, 2 is a first cutting edge, 2a, 3a are outer cutting edges, 2b, 3b are inner cutting edges, 3
is the second cutting edge, 4 and 5 are burnishing parts, 7 and 8 are rake faces, and 9 is a pad.
Claims (1)
リルにおいて、前記第１の切刃はドリル中心軸を
越えて延び且つそのすくい面は中心軸を通る平面
内に位置し、また前記第２の切刃のすくい面は第
１の切刃のすくい面に対し所定角度変位し、更に
前記第１の切刃のバニツシユ部には第２の切刃を
変位させたことによつて生じる切削力のアンバラ
ンスを修正するパツドを設けたことを特徴とする
二枚刃ガンドリル。 In a two-blade gun drill having a first cutting edge and a second cutting edge, the first cutting edge extends beyond the center axis of the drill, and its rake face is located in a plane passing through the center axis, and The rake face of the second cutting blade is displaced by a predetermined angle with respect to the rake face of the first cutting blade, and furthermore, the burnishing portion of the first cutting blade is caused by displacing the second cutting blade. A two-flute gun drill featuring a pad that corrects the imbalance of cutting force.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987167991U JPH0171012U (en) | 1987-11-02 | 1987-11-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987167991U JPH0171012U (en) | 1987-11-02 | 1987-11-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0171012U true JPH0171012U (en) | 1989-05-11 |
Family
ID=31456780
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987167991U Pending JPH0171012U (en) | 1987-11-02 | 1987-11-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0171012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009184031A (en) * | 2008-02-04 | 2009-08-20 | Honda Motor Co Ltd | Boring tool and drilling method |
-
1987
- 1987-11-02 JP JP1987167991U patent/JPH0171012U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009184031A (en) * | 2008-02-04 | 2009-08-20 | Honda Motor Co Ltd | Boring tool and drilling method |