精密フライスカッター,あらゆる材料を加工するCNC用の切削工具
Bull Nose End Mill Specification Options
A bull nose end mill has a flat cutting bottom with a defined corner radius at the outside cutting edge. Tooling catalogs also commonly list this geometry as a コーナーラジアスエンドミル.
General Dimensions
Use the following dimensions to specify the tool:
| Symbol | Dimension |
|---|---|
| D | カッター径 |
| R | コーナー半径 |
| LOC | カットの長さ |
| d | シャンク径 |
| OAL | 全長 |
| Z | 刃数 |
Check these dimensions together when selecting a standard tool or confirming a non-standard design.
For non-standard tools, send a drawing when available.
3-Flute Aluminum Series
OMIST offers a standard 3-flute series for aluminum and aluminum-alloy machining.
The confirmed series covers cutter diameters of approximately Ø1–Ø20 mm, with corner radii from R0.2 to R4 across the series. LOC, シャンク径, and OAL vary by cutter diameter and tool design.
しかし, not every diameter is available with every radius or length combination. OMIST confirms flute finish, surface treatment, and cutting geometry according to the actual machining requirement.
4-Flute Standard Series
The confirmed 4-flute series covers cutter diameters of approximately Ø1–Ø20 mm.
Corner radii represented across the series include:
R0.2 / R0.3 / R0.5 / R1 / R2
Not every radius is available with every cutter diameter. The table below shows representative confirmed configurations rather than a complete model list.
| D (ミリメートル) | R (ミリメートル) | LOC (ミリメートル) | Shank d (ミリメートル) | OAL (ミリメートル) | フルート |
|---|---|---|---|---|---|
| 1 | 0.2 | 3 | 4 | 50 | 4F |
| 4 | 0.5 | 10 | 4 | 50 | 4F |
| 6 | 1 | 18 | 6 | 75 | 4F |
| 8 | 1 | 24 | 8 | 75 | 4F |
| 10 | 1 | 30 | 10 | 100 | 4F |
| 12 | 1 | 36 | 12 | 100 | 4F |
| 14 | 2 | 35 | 14 | 100 | 4F |
| 16 | 1 | 40 | 16 | 100 | 4F |
| 20 | 1 | 40 | 20 | 100 | 4F |
Other D, R, LOC, シャンク, and OAL combinations depend on the required tool geometry and machining application.
Standard and Custom Options
OMIST offers standard 3F and 4F シリーズ.
For applications outside the standard range, we can manufacture non-standard sizes and geometries. 2F, 5F, 6F, extended-length tools, and other flute configurations are available for custom requirements.
Custom options may include diameter, コーナー半径, LOC, OAL, シャンクサイズ, フルート数, helix, coating or surface treatment, 切断形状, center-cutting design, および公差要件.
加えて, selected 150 mm OAL configurations are available according to cutter diameter, 到着, と幾何学.
We confirm final manufacturability after reviewing the required dimensions and application.
Applications and Selection
The 3-flute standard series is mainly intended for aluminum and aluminum-alloy machining.
The 4-flute series provides the main standard range for other machining requirements. 鋼用, ステンレス鋼, 金型鋼, or hardened-steel applications, OMIST reviews material hardness, 工具の寸法, 機械加工作業, 到着, and cutting conditions before confirming the final configuration.
We also select coating or surface treatment according to the actual application rather than using one fixed specification for the whole product family.
代表的なアプリケーションには次のものがあります。:
- Contour milling
- プロファイルフライス加工
- 中仕上げ
- 仕上げ
- 金型および金型加工
- Cavity machining
- Pocket machining where a corner radius is acceptable
For applications that require a sharp cutting corner, 見る ブルノーズ vs フラットエンドミル.
For the difference between a flat-bottom radiused cutter and a fully rounded cutting end, 見る Bull Nose vs Ball Nose End Mill.
Corner rounding form cutters are a different tool type used to produce an external workpiece radius. See コーナー半径とコーナーラウンディングエンドミルの比較.
主な機能
- Flat Bottom with Corner Radius: Combines a flat cutting end with a defined corner radius.
- Standard 3F and 4F Series: Covers multiple metric diameter, 半径, and length combinations.
- Application-Matched Configuration: Tool geometry and surface treatment depend on the workpiece and machining conditions.
- カスタム製造: 標準外の寸法, フルートの構成, and cutting geometry can be produced from customer requirements or drawings.
Custom Bull Nose End Mill Manufacturing
OMIST supports standard and custom solid carbide bull nose end mills for machining companies, 販売代理店, および OEM 要件.
For non-standard tools, we review the required dimensions, 幾何学, center-cutting requirement, and dimensional or radius tolerance against the drawing and machining application.
If a standard size does not fit the part, send the required dimensions, 描画, サンプル, or reference image for manufacturability review.
For quotation, please provide the main tool dimensions, ワーク材質, 機械加工作業, そして量. A drawing is preferred for non-standard requirements, but we can also make an initial review from the available dimensions and machining information.
We confirm MOQ, achievable tolerance, and lead time after reviewing the specification and quantity.
FAQ
ブルノーズエンドミルはコーナーラジアスエンドミルと同じです?
For the flat-bottom, radiused-corner geometry covered on this page, “bull nose end mill” is a common market name, while tooling catalogs often use “corner radius end mill.” Confirm the exact tool by its dimensions and geometry.
What flute counts are available?
The standard ranges include a 3-flute aluminum series and a 4-flute series. OMIST can also produce 2F, 5F, 6F, and other flute configurations for custom requirements.
What standard sizes and corner radii are available?
The 3-flute aluminum series covers approximately Ø1–Ø20 mm, で R0.2–R4 across the series.
The confirmed 4-flute range also covers approximately Ø1–Ø20 mm, で R0.2, R0.3, R0.5, R1, and R2 represented across the series.
Actual diameter, 半径, and length combinations vary by tool size and design.
Can custom bull nose end mills be manufactured from a drawing?
はい. OMIST can review non-standard dimensions and geometry from a drawing, 必要な寸法, サンプル, or machining information.
How should I request a quotation?
Send the main tool dimensions, ワーク材質, 機械加工作業, そして量. For a non-standard tool, include a drawing or reference image when available.
Request a Quote
Looking for a standard or custom bull nose end mill?
Send your drawing or required dimensions by 電子メール or contact us on ワッツアップ for specification confirmation and quotation.