JPS5836017U - drilling tool - Google Patents
drilling toolInfo
- Publication number
- JPS5836017U JPS5836017U JP13137581U JP13137581U JPS5836017U JP S5836017 U JPS5836017 U JP S5836017U JP 13137581 U JP13137581 U JP 13137581U JP 13137581 U JP13137581 U JP 13137581U JP S5836017 U JPS5836017 U JP S5836017U
- Authority
- JP
- Japan
- Prior art keywords
- center
- tool
- tip
- angle
- 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
Landscapes
- Drilling Tools (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は、本考案の孔明は工具を示す側面図、第2図は
同上の正面図、第3図は第1図に示す工具を90°回転
して見た側面図、第4図は斜視図、第5図はチップの他
の実施例を示す正面図である。
1・・・工具本体、2・・・ねじれ溝、3・・・座面、
4・・・チップ、5・・・切刃、7・・・すくい面、8
・・・平取部、9・・・にげ面、10.10’・・・凹
所、11・・・凸部。Figure 1 is a side view showing the tool of the present invention, Figure 2 is a front view of the same as above, Figure 3 is a side view of the tool shown in Figure 1 rotated by 90 degrees, and Figure 4 is a side view of the tool shown in Figure 1. The perspective view and FIG. 5 are front views showing another embodiment of the chip. 1... Tool body, 2... Twisted groove, 3... Seat surface,
4... Chip, 5... Cutting edge, 7... Rake face, 8
...Flat portion, 9...Ripped surface, 10.10'...Concave portion, 11...Convex portion.
Claims (4)
端部を回転中心近傍に位置して互いに点対称に配設し、
上記各チップは、回転中心寄りのすくい面に回転方向に
対して凸形状となる数段の平取部を軸線方向に形成して
前にげ面との交線を中心刃とし、さらにすくい面の中心
部に軸線方向の凹所を設けて前記中心刃と外周切刃を結
ぶ中央切刃を形成すると共に、外周切刃部の半径方向す
(い角が正となり、かつ軸方向のすくい角も工具本体ね
じれ溝のねじれ角に近い正の角度をなすようにしたこと
を特徴とする孔明は工具。(1) At the tip of the tool body, a pair of tips are arranged point-symmetrically with each other with the starting end of each cutting edge located near the center of rotation,
Each of the above-mentioned inserts has several steps of flattened parts in the axial direction that are convex in the direction of rotation on the rake face near the center of rotation, with the intersection line with the front curved surface serving as the center edge. An axial recess is provided in the center to form a central cutting edge that connects the center edge and the outer cutting edge, and the outer cutting edge has a positive radial rake angle and an axial rake angle. Komei is a tool that is characterized by forming a positive angle close to the helix angle of the helix groove of the tool body.
じれ溝のねじれ角とほぼ等しく設定したことを特徴とす
る実用新案登録請求の範囲第(1)項記載の孔明は工具
。(2) The tool according to claim 1, wherein the axial helix angle of each tip is set to be approximately equal to the helix angle of the helix groove of the tool body.
−となる凸部を有することを特徴とする実用新案登録請
求の範囲第(1)項又は第(2)項記載の孔明は工具。(3) The tool according to claim 1 or 2, wherein the tip has a convex portion that serves as a chip breaker at the rear of the rake face.
は1コーナ使用型として工具本体に着脱自在に取付けた
ことを特徴とする実用新案登録請求の範囲第(1)項乃
至第3項のうちいずれかに記載の孔明は工具。(4) The tip is removably attached to the tool body as a two-corner type or a single-corner type that is symmetrical in the front and back. The Komei mentioned in any of these is a tool.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13137581U JPS5836017U (en) | 1981-08-31 | 1981-08-31 | drilling tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP13137581U JPS5836017U (en) | 1981-08-31 | 1981-08-31 | drilling tool |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5836017U true JPS5836017U (en) | 1983-03-09 |
Family
ID=29924958
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP13137581U Pending JPS5836017U (en) | 1981-08-31 | 1981-08-31 | drilling tool |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5836017U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6352908A (en) * | 1986-08-22 | 1988-03-07 | Toshiba Tungaloy Co Ltd | Twist drill |
-
1981
- 1981-08-31 JP JP13137581U patent/JPS5836017U/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS6352908A (en) * | 1986-08-22 | 1988-03-07 | Toshiba Tungaloy Co Ltd | Twist drill |
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