JPS6239910U - - Google Patents
Info
- Publication number
- JPS6239910U JPS6239910U JP13176285U JP13176285U JPS6239910U JP S6239910 U JPS6239910 U JP S6239910U JP 13176285 U JP13176285 U JP 13176285U JP 13176285 U JP13176285 U JP 13176285U JP S6239910 U JPS6239910 U JP S6239910U
- Authority
- JP
- Japan
- Prior art keywords
- cutting edge
- rotation
- center
- shaped protrusion
- tool body
- 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
- 238000005553 drilling Methods 0.000 claims description 3
- 239000002131 composite material Substances 0.000 claims description 2
- 229910052582 BN Inorganic materials 0.000 claims 1
- PZNSFCLAULLKQX-UHFFFAOYSA-N Boron nitride Chemical compound N#B PZNSFCLAULLKQX-UHFFFAOYSA-N 0.000 claims 1
- 229910003460 diamond Inorganic materials 0.000 claims 1
- 239000010432 diamond Substances 0.000 claims 1
- 239000000463 material Substances 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
Landscapes
- Drilling Tools (AREA)
Description
第１図は、本考案穴あけ工具の一実施例を示す
正面図、第２図は、その拡大底面図である。
２……工具本体、４，５……フルート溝、６，
７……複合切刃チツプ、９……切刃層、１０……
主切刃稜、１１……副切刃稜、１２……ガイドパ
ツト。
FIG. 1 is a front view showing an embodiment of the drilling tool of the present invention, and FIG. 2 is an enlarged bottom view thereof. 2... Tool body, 4, 5... Flute groove, 6,
7... Composite cutting edge chip, 9... Cutting edge layer, 10...
Main cutting edge ridge, 11...Sub-cutting edge ridge, 12...Guide part.
Claims (1)
，５内には、ダイヤモンド、立方晶窒化硼素など
の多結晶焼結体からなる切刃層９を備えた複合切
刃チツプ６，７が取付けられ、また工具本体２の
外周縁部分には、ガイドパツド１２が備えられる
ようにした穴あけ工具において、 前記切刃チツプ６，７は、外周側および回転中
心側にそれぞれ向かう主切刃稜１０および副切刃
稜１１によつてＶ字突起が構成され、このＶ字突
起の頂点が刃先直径の略１／２円上に位置すると
ともに、主切刃稜１０が回転方向で対称となるの
に対し、副切刃稜１１の１つが回転中心を越えて
延び、他の副切刃稜１１が回転中心に至らずに回
転方向で非対称になつていることを特徴とする穴
あけ工具。[Claims for Utility Model Registration] Flute groove 4 provided in the axial direction of the tool body 2
, 5 are fitted with composite cutting chips 6, 7 having a cutting edge layer 9 made of polycrystalline sintered material such as diamond or cubic boron nitride, and on the outer peripheral edge of the tool body 2, In the drilling tool equipped with a guide pad 12, the cutting blade tips 6 and 7 have a V-shaped protrusion formed by a main cutting edge 10 and a minor cutting edge 11 facing toward the outer circumference and the rotation center, respectively. , the apex of this V-shaped protrusion is located approximately 1/2 circle above the diameter of the cutting edge, and while the main cutting edge ridge 10 is symmetrical in the rotational direction, one of the minor cutting edge ridges 11 crosses the center of rotation. A drilling tool characterized in that the other auxiliary cutting edge ridge 11 does not reach the center of rotation and is asymmetrical in the direction of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13176285U JPS6239910U (en) | 1985-08-29 | 1985-08-29 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13176285U JPS6239910U (en) | 1985-08-29 | 1985-08-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6239910U true JPS6239910U (en) | 1987-03-10 |
Family
ID=31030512
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13176285U Pending JPS6239910U (en) | 1985-08-29 | 1985-08-29 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6239910U (en) |
-
1985
- 1985-08-29 JP JP13176285U patent/JPS6239910U/ja active Pending
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