JPS59143613U - Drill - Google Patents
DrillInfo
- Publication number
- JPS59143613U JPS59143613U JP3599883U JP3599883U JPS59143613U JP S59143613 U JPS59143613 U JP S59143613U JP 3599883 U JP3599883 U JP 3599883U JP 3599883 U JP3599883 U JP 3599883U JP S59143613 U JPS59143613 U JP S59143613U
- Authority
- JP
- Japan
- Prior art keywords
- shank
- rotation
- cutting edge
- drill
- cutting
- 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
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図は本考案の一実施例の縦断面図、第２図はその■
−■断面要部図、第３図、第５図は各々第２図の要部図
、第４図、第６図は第１図の要部図、第７図はドリルの
他の実施例の第２図は相当する断面図、第８図はドリル
先部の拡大側面図、第９図はその底面図である。
Ｃ・・・・・・チャック、１１・・・・・・本体、１２
・・・・・・爪間隔調整部、１３・・・・・・爪、１４
・・・・・・ばね、ＩＩＣ・・・・・・凹部、Ｎｄ・・
・・・・回転伝達面、Ｄ・・・・・・ドリル、１・・・
・・・シャンク、１ｄ・・・・・・凸部、１ｂ・・・・
・・回転伝達面、２・・・・・・ねじれ溝、３・・・・
・・第１の切刃、５・・・・・・第２の切刃、６・・・
・・・第３の切刃。
、 （１）
→
Ｄ／−正〜７
６０＋、、、＃ −
：図
？Figure 1 is a vertical sectional view of one embodiment of the present invention, and Figure 2 is its
-■ Cross-sectional view of the main parts, Figures 3 and 5 are the main parts of Figure 2, Figures 4 and 6 are the main parts of Figure 1, and Figure 7 is another example of the drill. 2 is a corresponding sectional view, FIG. 8 is an enlarged side view of the drill tip, and FIG. 9 is a bottom view thereof. C...Chuck, 11...Body, 12
......Claw spacing adjustment section, 13...Claw, 14
...Spring, IIC...Concavity, Nd...
...Rotation transmission surface, D...Drill, 1...
...Shank, 1d...Protrusion, 1b...
...Rotation transmission surface, 2...Twisted groove, 3...
...First cutting blade, 5...Second cutting blade, 6...
...Third cutting edge. , (1) → D/- Positive ~ 7 60+,,, #-: Figure?
Claims (1)
ねじれ溝底面間の芯厚はシャンクの直径の１／４以上に
設定され、シャンクの軸中心付近には底面視で回転方向
に凸曲線を抽く第１の切刃が互いに点対称に形成され、
ねじ溝の延長面とシャンク頂面の逃げ面との交差部によ
って外周部に第２の切刃が形成され、第１の切刃と第２
の切刃との間にほぼ直線の第３の切刃が形成され、第２
の切刃と第３の切刃との側面形状はほぼ直線に形成され
、第１の切刃の回転軌跡円はシャンクの直径の１１５〜
１１１５になるように形成され、かつ、前記シャンクの
末端に回転伝達面を持つ凹部又は凸部が設けられ、該伝
達面は回転方向に向く回転円周接線に対し交叉している
ことを特徴とするドリル。In a drill with a pair of helical grooves and a conical top surface,
The core thickness between the bottom surfaces of the helical groove is set to 1/4 or more of the diameter of the shank, and near the axial center of the shank, first cutting edges that draw convex curves in the direction of rotation when viewed from the bottom are formed point-symmetrical to each other. ,
A second cutting edge is formed on the outer periphery by the intersection of the extension surface of the thread groove and the flank surface of the top surface of the shank.
A substantially straight third cutting edge is formed between the second cutting edge and the second cutting edge.
The side shapes of the cutting blade and the third cutting blade are formed into almost straight lines, and the rotation locus circle of the first cutting blade is 115 to 115 times the diameter of the shank.
1115, and a concave or convex portion having a rotation transmission surface is provided at the end of the shank, and the transmission surface intersects with a tangent to the rotation circumference facing in the rotation direction. Drill to do.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3599883U JPS59143613U (en) | 1983-03-11 | 1983-03-11 | Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP3599883U JPS59143613U (en) | 1983-03-11 | 1983-03-11 | Drill |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS59143613U true JPS59143613U (en) | 1984-09-26 |
| JPH0321852Y2 JPH0321852Y2 (en) | 1991-05-13 |
Family
ID=30166669
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP3599883U Granted JPS59143613U (en) | 1983-03-11 | 1983-03-11 | Drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS59143613U (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4853679U (en) * | 1971-10-18 | 1973-07-11 | ||
| JPS54100192U (en) * | 1977-11-01 | 1979-07-14 | ||
| JPS5589514U (en) * | 1978-12-16 | 1980-06-20 | ||
| JPS55120415U (en) * | 1979-02-14 | 1980-08-26 | ||
| JPS5676309U (en) * | 1979-11-15 | 1981-06-22 |
-
1983
- 1983-03-11 JP JP3599883U patent/JPS59143613U/en active Granted
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4853679U (en) * | 1971-10-18 | 1973-07-11 | ||
| JPS54100192U (en) * | 1977-11-01 | 1979-07-14 | ||
| JPS5589514U (en) * | 1978-12-16 | 1980-06-20 | ||
| JPS55120415U (en) * | 1979-02-14 | 1980-08-26 | ||
| JPS5676309U (en) * | 1979-11-15 | 1981-06-22 |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0321852Y2 (en) | 1991-05-13 |
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