JPH0428909U - - Google Patents
Info
- Publication number
- JPH0428909U JPH0428909U JP6703690U JP6703690U JPH0428909U JP H0428909 U JPH0428909 U JP H0428909U JP 6703690 U JP6703690 U JP 6703690U JP 6703690 U JP6703690 U JP 6703690U JP H0428909 U JPH0428909 U JP H0428909U
- Authority
- JP
- Japan
- Prior art keywords
- coating layer
- center drill
- groove
- tapered
- straight
- 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
- 239000011247 coating layer Substances 0.000 claims description 11
- 229910003460 diamond Inorganic materials 0.000 claims description 6
- 239000010432 diamond Substances 0.000 claims description 6
- 239000010410 layer Substances 0.000 claims 2
- 229910000997 High-speed steel Inorganic materials 0.000 claims 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims 1
- 239000002131 composite material Substances 0.000 claims 1
- 238000005240 physical vapour deposition Methods 0.000 claims 1
- 239000002356 single layer Substances 0.000 claims 1
- 238000001308 synthesis method Methods 0.000 claims 1
- UONOETXJSWQNOL-UHFFFAOYSA-N tungsten carbide Chemical compound [W+]#[C-] UONOETXJSWQNOL-UHFFFAOYSA-N 0.000 claims 1
- 239000012808 vapor phase Substances 0.000 claims 1
Landscapes
- Drilling Tools (AREA)
Description
第１図は、この考案のセンタードリルの側面図
、第２図は、従来のセンタードリルの側面図、第
３図は、センター穴を明けた予焼体の断面図であ
る。
１……先端ランド部、２……ストレート部、３
……テーパー部、４……シヤンク部、５……溝、
６……電着ダイヤモンド被覆層、７……予焼体、
８……センター穴、９……テーパー面、１０……
コーテイング層、１１……***。
FIG. 1 is a side view of the center drill of this invention, FIG. 2 is a side view of a conventional center drill, and FIG. 3 is a sectional view of a prefired body with a center hole drilled therein. 1...Tip land part, 2...Straight part, 3
...Tapered part, 4...Shank part, 5...Groove,
6...Electrodeposited diamond coating layer, 7...Prefired body,
8...Center hole, 9...Tapered surface, 10...
Coating layer, 11...small hole.
Claims (1)
パー部および大径のシヤンク部からなり、上記先
端ランド部、ストレート部、テーパー部およびシ
ヤンク部にかけて溝を設けてなる高速度鋼製また
は炭化タングステン基超硬合金製センタードリル
基体の表面に電着ダイヤモンド被覆層を形成して
なるセンタードリルにおいて、 上記センタードリル基体のストレート部から先
端ランド部に向つて溝を含めた表面に電着ダイヤ
モンド被覆層を形成し、かつ上記テーパー部およ
びテーパー部に設けられた溝に、ＴｉＮ，ＴｉＣ
Ｎ，ＴｉＣのうちのいずれかの単層または２層以
上の複合層からなる物理蒸着コーテイング層およ
び気相合成法によるダイヤモンドコーテイング層
（以下、コーテイング層という）を形成してなる
ことを特徴とするセンタードリル。 (2) 上記センタードリル基体のストレート部か
ら先端ランド部に向つて溝を含めた全面に電着ダ
イヤモンド被覆層を形成し、かつ上記テーパー部
およびテーパー部に設けられた溝の全面に上記コ
ーテイング層を形成してなることを特徴とする請
求項１記載のセンタードリル。 (3) 上記センタードリル基体のストレート部の
一部から先端ランド部に向つて溝を含めた全面に
電着ダイヤモンド被覆層を形成し、かつ上記スト
レート部の残部およびその部分の溝、並びに上記
テーパー部およびテーパー部に設けられた溝の全
面に上記コーテイング層を形成してなることを特
徴とする請求項１記載のセンタードリル。[Claims for Utility Model Registration] (1) Consisting of a tip land portion, a small-diameter straight portion, a tapered portion, and a large-diameter shank portion, and a groove is provided across the tip land portion, straight portion, tapered portion, and shank portion. In a center drill formed by forming an electrodeposited diamond coating layer on the surface of a center drill base made of high-speed steel or tungsten carbide-based cemented carbide, a groove is included from the straight part of the center drill base to the tip land part. An electrodeposited diamond coating layer is formed on the surface, and TiN, TiC is applied to the tapered part and the groove provided in the tapered part.
It is characterized by forming a physical vapor deposition coating layer consisting of a single layer or a composite layer of two or more layers of N or TiC, and a diamond coating layer (hereinafter referred to as a coating layer) formed by a vapor phase synthesis method. center drill. (2) An electrodeposited diamond coating layer is formed on the entire surface of the center drill base including the groove from the straight part to the tip land part, and the coating layer is applied on the entire surface of the tapered part and the groove provided in the tapered part. 2. The center drill according to claim 1, wherein the center drill is formed by forming a center drill. (3) An electrodeposited diamond coating layer is formed on the entire surface of the center drill base including the groove from a part of the straight part toward the tip land part, and the rest of the straight part and the groove in that part, as well as the taper. 2. The center drill according to claim 1, wherein the coating layer is formed on the entire surface of the groove provided in the part and the tapered part.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6703690U JPH0428909U (en) | 1990-06-25 | 1990-06-25 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6703690U JPH0428909U (en) | 1990-06-25 | 1990-06-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0428909U true JPH0428909U (en) | 1992-03-09 |
Family
ID=31600261
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6703690U Pending JPH0428909U (en) | 1990-06-25 | 1990-06-25 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0428909U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009202302A (en) * | 2008-02-28 | 2009-09-10 | Yamawa Seisakusho:Kk | Center hole drill |
-
1990
- 1990-06-25 JP JP6703690U patent/JPH0428909U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2009202302A (en) * | 2008-02-28 | 2009-09-10 | Yamawa Seisakusho:Kk | Center hole drill |
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