JPS6017U - Drill - Google Patents
DrillInfo
- Publication number
- JPS6017U JPS6017U JP9142283U JP9142283U JPS6017U JP S6017 U JPS6017 U JP S6017U JP 9142283 U JP9142283 U JP 9142283U JP 9142283 U JP9142283 U JP 9142283U JP S6017 U JPS6017 U JP S6017U
- Authority
- JP
- Japan
- Prior art keywords
- drill
- angle
- blade
- tip
- rake face
- 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、本考案ドリルの一例を示す斜視図、第２図は
その正面図、第３図は側面図、第４図は切屑ポケット先
端の断面図、第５図は同じポケットの中央部の断面図、
第６図は外周直線刃の側面図、第７図は従来ドリルとの
ねじれ剛性の比較計算結果を示すグラフ、第８図は破断
強度の比較実験値を示すグラフ、第９図はスラスト力の
比較値を示すグラフ、第１０図は一般的ドリルの正面図
、第１１図は被覆付ドリルと被覆なしドリルの耐摩特性
を表わすグラフである。
１・・・本体、２・・・ねじれ溝、３・・・ヒール部、
４・・・前切刃、４ａ・・・外周直線刃、４ｂ・・・チ
ゼル刃、４Ｃ・・−第２の直線刃、５、・・・切屑ポケ
ット、５ａ、 ５ａ′・・・すくい面、５ｂ、 ５
ｂ’・・・側面壁、６・・・チャンファ−１７・・・外
周マージン部。
第７図
第８図Fig. 1 is a perspective view showing an example of the drill of the present invention, Fig. 2 is a front view thereof, Fig. 3 is a side view, Fig. 4 is a sectional view of the tip of the chip pocket, and Fig. 5 is a central part of the same pocket. A cross-sectional view of
Figure 6 is a side view of the straight edge on the outer periphery, Figure 7 is a graph showing the calculation results of comparison of torsional rigidity with a conventional drill, Figure 8 is a graph showing comparative experimental values of breaking strength, and Figure 9 is a graph of thrust force. Graphs showing comparative values, FIG. 10 is a front view of a general drill, and FIG. 11 is a graph showing wear resistance characteristics of a coated drill and an uncoated drill. 1...Body, 2...Twisted groove, 3...Heel part,
4... Front cutting edge, 4a... Outer circumference linear blade, 4b... Chisel blade, 4C...-second straight blade, 5... Chip pocket, 5a, 5a'... Rake face , 5b, 5
b'...Side wall, 6...Chamfer-17...Outer peripheral margin part. Figure 7 Figure 8
Claims (1)
イストドリルにおいて、切刃部の一部又は全体がＴｉＭ
、 ＴｉＣ，Ｔ１ＣＮもしくはＡＩ。０３の被覆層をも
つ超硬合金によって形成され、 芯厚はドリル直径の５０〜６０％、ヒール部はドリル直
径の４０〜５０％を半径とする円弧面又はそれに近い丸
味をもち、 先端角は１３０〜１５０°で、ねじれ溝先端部には前切
刃の外周直線刃に対するす（い角かはＳ゛−５〜＋１０
°のすくい面と、この面となす角が９０゜〜１２０°の
側面壁によって構成される切屑ポケットを有し、 ドリル中心部には、巾０．４ＴｒｒＩｎ以下のチゼル刃
より直線状に延びて前記外周直線刃に３０〜５０°の角
度で交差しその交点が小半径の円弧でつながれる第２の
直線刃を形成し、かつこの刃のすくい面と回転軸に対し
て１５〜４０°ねじれ溝方向に傾む−けた切屑ポケット
先端の側面壁とのなす角は９０〜１２０°にし、 さらに、チゼル刃を、除く前切刃には、半径０゜０３〜
０．２Ｍの丸味をもつか又は０．０５〜０．２ｍｍ巾で
すくい面よりの傾斜角がＯ〜３０６のチャンファ−ホー
ニングを施して成るドリル。[Claims for Utility Model Registration] A twist drill having a helical groove inclined from 20 to 406 degrees with respect to the rotation axis, in which part or all of the cutting edge is made of TiM.
, TiC, T1CN or AI. It is made of cemented carbide with a No. 03 coating layer, the core thickness is 50-60% of the drill diameter, the heel has a circular arc surface with a radius of 40-50% of the drill diameter, or a roundness close to it, and the tip angle is 130 to 150 degrees, and the tip of the helical groove has an angle of S゛-5 to +10
The drill has a chip pocket formed by a rake face of A second linear blade is formed that intersects the outer circumferential straight blade at an angle of 30 to 50° and the intersection point is connected by an arc with a small radius, and is twisted by 15 to 40° with respect to the rake face of this blade and the rotation axis. The angle between the tip of the chip pocket and the side wall that is inclined toward the groove should be 90 to 120°, and the front cutting edge, excluding the chisel blade, should have a radius of 0° to 120°.
A drill with a roundness of 0.2M or chamfer honing with a width of 0.05 to 0.2 mm and an angle of inclination from the rake face of 0 to 306 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9142283U JPS6017U (en) | 1983-06-15 | 1983-06-15 | Drill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9142283U JPS6017U (en) | 1983-06-15 | 1983-06-15 | Drill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6017U true JPS6017U (en) | 1985-01-05 |
Family
ID=30221407
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9142283U Pending JPS6017U (en) | 1983-06-15 | 1983-06-15 | Drill |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6017U (en) |
-
1983
- 1983-06-15 JP JP9142283U patent/JPS6017U/en active Pending
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