JPS62188313U - - Google Patents
Info
- Publication number
- JPS62188313U JPS62188313U JP7625786U JP7625786U JPS62188313U JP S62188313 U JPS62188313 U JP S62188313U JP 7625786 U JP7625786 U JP 7625786U JP 7625786 U JP7625786 U JP 7625786U JP S62188313 U JPS62188313 U JP S62188313U
- Authority
- JP
- Japan
- Prior art keywords
- drill
- groove
- tip
- utility
- model registration
- 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
- 230000007423 decrease Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 1
Landscapes
- Drilling Tools (AREA)
Description
第１〜３図はこの考案の１実施例の説明図であ
り、第１図は全体概略側面図、第２，３図は第１
図―，―断面図、第４図以下は在来態様
のドリルの１態様であり、第４図はその概略側面
図、第５，６図は第４図―，―断面図で
ある。
５…切刃部、７…刃先、４…シヤンク、８…溝
、１′…ドリル。
Figures 1 to 3 are explanatory diagrams of one embodiment of this invention, with Figure 1 being an overall schematic side view, and Figures 2 and 3 being the first embodiment.
Figures 4 and 4 below show one embodiment of a conventional drill, with Figure 4 being a schematic side view thereof, and Figures 5 and 6 being sectional views of Figures 4 and 4. 5... Cutting edge portion, 7... Cutting edge, 4... Shank, 8... Groove, 1'... Drill.
Claims (1)
ヤンク側部にスパイラル状の切屑排出用の溝を形
成されているドリル構造において、軸心に対し溝
のリード角がドリル先端部から溝終端部の０°に
かけて漸減する角度に形成され、溝幅比がドリル
先端部分から溝終端部にかけて大きくなるよう変
化され、且つ芯厚がドリル先端部から溝終端部に
かけて漸増するように形成されていることを特徴
とするドリル構造。 (2) 上記切屑排出用の溝の軸心に対するリード
角がドリル先端部から溝終端部の０°に漸減する
角度が２０°〜３０°から０°になるよう減少角
度にされていることを特徴とする上記実用新案登
録請求の範囲第１項記載のドリル構造。 (3) 上記溝幅比がドリル先端部から後部にかけ
て０．４〜１．０：１から０．８〜１．５：１に
変化するようにされていることを特徴とする上記
実用新案登録請求の範囲第１項記載のドリル構造
。 (4) 上記芯厚のドリル先端部から溝終端部への
変化がドリル直径の０．３倍から０．３５倍に亘
るようにされていることを特徴とする上記実用新
案登録請求の範囲第１項記載のドリル構造。[Scope of Claim for Utility Model Registration] (1) In a drill structure in which the tip of the cutting edge is made of cemented carbide and a spiral chip discharge groove is formed on the side of the shank, the shaft center On the other hand, the lead angle of the groove is formed at an angle that gradually decreases from the drill tip to 0° at the groove end, the groove width ratio is changed to increase from the drill tip to the groove end, and the core thickness is changed from the drill tip to the groove end. A drill structure characterized by being formed so as to gradually increase from the end to the end of the groove. (2) Make sure that the lead angle of the chip evacuation groove with respect to the axis gradually decreases from 20° to 30° to 0° from the tip of the drill to 0° at the end of the groove. A drill structure according to claim 1 of the above-mentioned utility model registration. (3) Registration of the above utility model characterized in that the groove width ratio changes from 0.4 to 1.0:1 to 0.8 to 1.5:1 from the tip to the rear of the drill. A drill structure according to claim 1. (4) The utility model registration claim 1 is characterized in that the change in core thickness from the tip of the drill to the end of the groove ranges from 0.3 to 0.35 times the diameter of the drill. The drill structure described in item 1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7625786U JPS62188313U (en) | 1986-05-22 | 1986-05-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7625786U JPS62188313U (en) | 1986-05-22 | 1986-05-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62188313U true JPS62188313U (en) | 1987-11-30 |
Family
ID=30923164
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7625786U Pending JPS62188313U (en) | 1986-05-22 | 1986-05-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62188313U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010234461A (en) * | 2009-03-30 | 2010-10-21 | Mitsubishi Materials Corp | Insert-type drill |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62213911A (en) * | 1986-03-14 | 1987-09-19 | Mitsubishi Metal Corp | Drilling tool |
-
1986
- 1986-05-22 JP JP7625786U patent/JPS62188313U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS62213911A (en) * | 1986-03-14 | 1987-09-19 | Mitsubishi Metal Corp | Drilling tool |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2010234461A (en) * | 2009-03-30 | 2010-10-21 | Mitsubishi Materials Corp | Insert-type drill |
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