JPS63201009U - - Google Patents
Info
- Publication number
- JPS63201009U JPS63201009U JP9324587U JP9324587U JPS63201009U JP S63201009 U JPS63201009 U JP S63201009U JP 9324587 U JP9324587 U JP 9324587U JP 9324587 U JP9324587 U JP 9324587U JP S63201009 U JPS63201009 U JP S63201009U
- Authority
- JP
- Japan
- Prior art keywords
- drill
- guide
- land
- pair
- drill diameter
- 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.)
- Granted
Links
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
第１図は２枚刃ドリルの全体図、第２図は工具
本体の正面図、第３図はドリルで穴加工している
状態の説明図、第４図は従来形の２枚刃ドリルを
示す図である。
尚図面中、１はドリル、３は工具本体、４はラ
ンド、７は第１ガイド部、８は第２ガイド部、１
１はすくい面、Ｄ１は刃部のドリル径、Ｄ２は第
１ガイド部のドリル径、Ｄ３は第２ガイド部のド
リル径、Ｏはドリル中心軸である。
Figure 1 is an overall view of the two-blade drill, Figure 2 is a front view of the tool body, Figure 3 is an explanatory diagram of the state in which a hole is being drilled, and Figure 4 is a conventional two-blade drill. FIG. In the drawings, 1 is a drill, 3 is a tool body, 4 is a land, 7 is a first guide part, 8 is a second guide part, 1
1 is the rake face, D1 is the drill diameter of the blade part, D2 is the drill diameter of the first guide part, D3 is the drill diameter of the second guide part, and O is the drill center axis.
Claims (1)
称に形成されたドリルにおいて、 前記ランドの回転方向側端部に径方向向きにす
くい面を有する刃部を対称に設け、このランドの
回転方向逆側の端部に第１ガイド部を対称に設け
て、該一対の第１ガイド部におけるドリル径と前
記刃部におけるドリル径とを等しくすると共に、
前記ランドの刃部と第１ガイド部の略中間位置に
第２ガイド部を突出させて対称に設け、該一対の
第２ガイド部におけるドリル径を前記刃部におけ
るドリル径より所定寸法だけ小さくしたことを特
徴とする２枚刃ドリル。[Claims for Utility Model Registration] A drill in which a pair of lands are formed symmetrically around the axis of the tool body, a cutting edge having a rake face in the radial direction at the end of the land in the rotational direction. , and a first guide portion is symmetrically provided at the end of the land on the opposite side in the rotational direction to make the drill diameter in the pair of first guide portions equal to the drill diameter in the blade portion,
A second guide part is protruded and symmetrically provided at a position approximately midway between the blade part of the land and the first guide part, and the drill diameter in the pair of second guide parts is smaller than the drill diameter in the blade part by a predetermined dimension. A two-flute drill with the following characteristics.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987093245U JPH0540887Y2 (en) | 1987-06-17 | 1987-06-17 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987093245U JPH0540887Y2 (en) | 1987-06-17 | 1987-06-17 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63201009U true JPS63201009U (en) | 1988-12-26 |
| JPH0540887Y2 JPH0540887Y2 (en) | 1993-10-18 |
Family
ID=30955666
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987093245U Expired - Lifetime JPH0540887Y2 (en) | 1987-06-17 | 1987-06-17 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0540887Y2 (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117768U (en) * | 1984-07-05 | 1986-02-01 | アルプス電気株式会社 | Electronic component mounting equipment |
| JPH0325856U (en) * | 1988-11-07 | 1991-03-18 |
-
1987
- 1987-06-17 JP JP1987093245U patent/JPH0540887Y2/ja not_active Expired - Lifetime
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6117768U (en) * | 1984-07-05 | 1986-02-01 | アルプス電気株式会社 | Electronic component mounting equipment |
| JPH0325856U (en) * | 1988-11-07 | 1991-03-18 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0540887Y2 (en) | 1993-10-18 |