JPH01228711A - Ball end mill tool - Google Patents
Ball end mill toolInfo
- Publication number
- JPH01228711A JPH01228711A JP5365088A JP5365088A JPH01228711A JP H01228711 A JPH01228711 A JP H01228711A JP 5365088 A JP5365088 A JP 5365088A JP 5365088 A JP5365088 A JP 5365088A JP H01228711 A JPH01228711 A JP H01228711A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- end mill
- ball end
- machining
- cutting blade
- 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
- 238000003754 machining Methods 0.000 abstract description 16
- 230000003746 surface roughness Effects 0.000 abstract description 5
- 230000002708 enhancing effect Effects 0.000 abstract 1
- 230000000694 effects Effects 0.000 description 3
- 230000007547 defect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000007790 scraping Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/10—Shank-type cutters, i.e. with an integral shaft
- B23C5/1009—Ball nose end mills
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は金型加工など３次元加工を必要とする加工等に
多く使用される仕上がりの向上を目的としたボールエン
ドミル工具に関する。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a ball end mill tool aimed at improving the finish, which is often used in machining that requires three-dimensional machining, such as mold machining.
ボールエンドミル工具は、第３図に示すＤうにボールエ
ンドミル５０の主軸５２に取り付け、主軸５２によって
回転されながら、Ｘ軸、ｙ軸又はＺ軸方向に送られるこ
とにより加工を行なうものである。特に、金型など３次
元加工を必要とする加工には多く用いられている。ボー
ルエンドミル工具５４は全体が円柱状で、その先端は半
球状に形成してあり、切刃５６が側面から先端部までら
旋状、あるいは直線状に設けである。このボールエンド
ミル工具５４が回転しながら移動して上記切刃５６が加
工面５８に接することにより任意の形状に加工がなされ
るようになっている。第４図は従来工具の底面図である
。The ball end mill tool is attached to the main shaft 52 of the D-shaped ball end mill 50 shown in FIG. 3, and is rotated by the main shaft 52 while being fed in the X-axis, y-axis, or Z-axis direction to perform processing. In particular, it is widely used for processing that requires three-dimensional processing, such as molds. The ball end mill tool 54 has a cylindrical shape as a whole, and its tip is formed into a hemispherical shape, and the cutting edge 56 is provided in a spiral or linear shape from the side surface to the tip. The ball end mill tool 54 moves while rotating, and the cutting blade 56 comes into contact with the machining surface 58, thereby machining an arbitrary shape. FIG. 4 is a bottom view of the conventional tool.
ところで従来のボールエンドミル５０を用いた加工にお
いては、従来加工中に切刃５６とボールエンドミル工具
５４の進行方向が一致することによる切削不良が生ずる
ことがあった。これは第４図に示すようにボールエンド
ミル工具５４の先端の切刃が１枚であること、もしくは
２枚が直線状に設けられているためであって、このよう
に設けられた切刃５４が進行方向Ａに一致した瞬間その
方向Ａに沿って被切削面をその−！ま移動してしまうこ
とから加工面５８に削り残しが生ずる。この削り残し部
分は、例えば１枚刃工具の場合、工具がもう１回転した
ときに削られるが、この間に工具は１回転当９の送りだ
け移動しておシ切刃が球面上に配置されているために削
り残し部分の高い位置を削ることになる。従って周囲に
くらべてその高さが高くなり段差がつくので加工面５８
の面粗度が悪化し、仕上がりの悪いものとなっていた。By the way, in machining using the conventional ball end mill 50, cutting defects may occur due to the advancing directions of the cutting blade 56 and the ball end mill tool 54 coinciding during conventional machining. This is because the tip of the ball end mill tool 54 has only one cutting edge, or two cutting edges are provided in a straight line, as shown in FIG. At the moment when the direction A coincides with the direction A, the surface to be cut is moved along the direction A. This movement causes uncut edges on the machined surface 58. For example, in the case of a single-edged tool, this uncut portion will be removed when the tool makes one more revolution, but during this time the tool will move by a feed rate of 9 per revolution and the cutting edge will be placed on a spherical surface. Because of this, the high parts of the uncut parts have to be removed. Therefore, the height is higher than the surrounding area, creating a step, so the machined surface 58
The surface roughness deteriorated, resulting in a poor finish.
本発明は上記不具合点を解決しようとするものである。The present invention aims to solve the above-mentioned problems.
このだめ本発明のボールエンドミル工具は、工具の側面
及び底面に切刃を備えたボールエンドミル工具において
、前記底面の回転中心部近傍の切刃を回転軸に直交する
垂直な面内に配置したことを特徴としている。The ball end mill tool of the present invention has cutting edges on the side and bottom surfaces of the tool, and the cutting edges near the center of rotation on the bottom surface are arranged in a vertical plane perpendicular to the rotation axis. It is characterized by
上述の本発明のボールエンドミル工具は、従来ボールエ
ンドミルで最も面粗さが悪くなる工具回転中心に垂直な
面を加工する場合、本発明工具によれば切刃がこの平面
に平行に切削するため加工後の面として残る削シ残し部
分を削り取り面粗さを向上させるものである。The above-mentioned ball end mill tool of the present invention has the advantage that when machining a surface perpendicular to the center of rotation of the tool where conventional ball end mills have the worst surface roughness, the cutting edge cuts parallel to this plane according to the tool of the present invention. This improves the surface roughness by scraping away the uncut portion that remains on the surface after machining.
以下本発明のボールエンドミル工具の一実施例について
第１図及び第２図によシ説明する。An embodiment of the ball end mill tool of the present invention will be described below with reference to FIGS. 1 and 2.
第１図は工具１の側面を示しだもので第２図はその底面
を示したものである。工具１の側面外周から中心に向け
て切刃４が設けである。この切刃４は、工具１が回転し
て創成する仮想球面上に配置されている。切刃４につな
がる回転中心近傍の加工後の面として残る部分を削る切
刃３は回転軸２に対し垂直に工具の底面に配置されてい
る。ボールエンドミル工具１が被削材５の削り代６を削
るとき加工後の面として残される部分７が平面になるた
め削シ残しがなくなる。FIG. 1 shows the side surface of the tool 1, and FIG. 2 shows its bottom surface. A cutting edge 4 is provided from the outer periphery of the side surface of the tool 1 toward the center. This cutting edge 4 is arranged on a virtual spherical surface created by rotation of the tool 1. A cutting blade 3 that cuts a portion remaining as a surface after machining in the vicinity of the rotation center connected to the cutting blade 4 is arranged perpendicularly to the rotation axis 2 on the bottom surface of the tool. When the ball end mill tool 1 cuts the machining allowance 6 of the work material 5, the portion 7 left as the surface after machining becomes a flat surface, so that no machining remains are left.
具体的には工具先端半径Ｒが５園の２枚刃の工具で工具
１回転当たシの送り１．０間、１バス毎の送り量（ビッ
ク）０．５ｆｒｒ！ｎの加工条件の場合回転軸に垂直な
切刃３の径りは１．１ ｍｍである。Specifically, with a two-flute tool with a tool tip radius R of 5, the feed rate per tool rotation is 1.0, and the feed amount per bus (big) is 0.5 frr! In the case of machining conditions n, the diameter of the cutting edge 3 perpendicular to the rotation axis is 1.1 mm.
以上述べたように本発明のポールエンドミル工具具によ
れば次に示す効果が得られる。As described above, the pole end mill tool of the present invention provides the following effects.
（１）工具先端の回転中心付近の切刃が、回転軸に垂直
な平面内で切削するために従来のもののような削り残し
がなくなり面粗さを向上させることができる。(1) Since the cutting edge near the center of rotation at the tip of the tool cuts in a plane perpendicular to the rotation axis, there is no uncut material left as in conventional tools, and the surface roughness can be improved.
第１図は本発明にかかる工具の一実施例を示す側面図、
第２図は底面図、第３図はボールエンドミルの概略を示
す側面図、第４図は従来の工具の底面図である。
１・・・ボールエンドミル工具、
２・・・工具回転中心、３・・・回転軸に垂直な切刃、
４・・・側部切刃、 ５・・・被削材、 ６・・・削
り代、Ｒ・・・工具先端半径、 ５０・・・ボールエ
ンドミル加工装置、 ５２・・・主軸、 ５４・・
・ボールエンドミル工具、 ５６・・・切刃、 ５
８・・・被削材。
晃１図
第２匿FIG. 1 is a side view showing an embodiment of the tool according to the present invention;
FIG. 2 is a bottom view, FIG. 3 is a side view schematically showing a ball end mill, and FIG. 4 is a bottom view of a conventional tool. 1... Ball end mill tool, 2... Tool rotation center, 3... Cutting blade perpendicular to the rotation axis,
4... Side cutting edge, 5... Work material, 6... Cutting allowance, R... Tool tip radius, 50... Ball end mill processing device, 52... Main spindle, 54...
・Ball end mill tool, 56...cutting blade, 5
8...Work material. Ko 1 Figure 2 Anonymous
Claims (1)
ミル工具において前記底面の回転中心部近傍の切刃を回
転軸に垂直な面内に配置することを特徴とするボールエ
ンドミル工具。(1) A ball end mill tool having cutting edges on the side and bottom surfaces of the tool, characterized in that the cutting edges near the center of rotation on the bottom surface are arranged in a plane perpendicular to the axis of rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5365088A JPH01228711A (en) | 1988-03-09 | 1988-03-09 | Ball end mill tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5365088A JPH01228711A (en) | 1988-03-09 | 1988-03-09 | Ball end mill tool |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01228711A true JPH01228711A (en) | 1989-09-12 |
Family
ID=12948756
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5365088A Pending JPH01228711A (en) | 1988-03-09 | 1988-03-09 | Ball end mill tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01228711A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05309513A (en) * | 1992-05-12 | 1993-11-22 | Shibaura Eng Works Co Ltd | Structure of blade of cutting tool and processing method therefor |
| KR100309968B1 (en) * | 1998-02-05 | 2001-10-29 | 니시무로 타이죠 | End mill and cutting method using the same |
| EP2422907A1 (en) * | 2010-08-27 | 2012-02-29 | Sandvik Intellectual Property AB | A milling insert, a tool and a device for milling |
-
1988
- 1988-03-09 JP JP5365088A patent/JPH01228711A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05309513A (en) * | 1992-05-12 | 1993-11-22 | Shibaura Eng Works Co Ltd | Structure of blade of cutting tool and processing method therefor |
| KR100309968B1 (en) * | 1998-02-05 | 2001-10-29 | 니시무로 타이죠 | End mill and cutting method using the same |
| EP2422907A1 (en) * | 2010-08-27 | 2012-02-29 | Sandvik Intellectual Property AB | A milling insert, a tool and a device for milling |
| JP2012045705A (en) * | 2010-08-27 | 2012-03-08 | Sandvik Intellectual Property Ab | Milling insert, tool and device for milling |
| KR20120026446A (en) * | 2010-08-27 | 2012-03-19 | 산드빅 인터렉츄얼 프로퍼티 에이비 | A milling insert, a tool and a device for milling |
| CN102407370A (en) * | 2010-08-27 | 2012-04-11 | 山特维克知识产权股份有限公司 | Milling insert and tool and device for milling |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3884884B2 (en) | In-corner cutting method and cutting tool | |
| JP2007229849A (en) | Endmill, and machining method using the same | |
| JPS63312012A (en) | Fly milling machine | |
| JPH01228711A (en) | Ball end mill tool | |
| JP2003220514A (en) | Cutting tool and cutting method using the same | |
| JP4094856B2 (en) | Machining method of arc groove | |
| JP2002224902A (en) | Spherical processing method of workpiece for lathe | |
| JPH02303707A (en) | Ball end mill | |
| JPH11239909A (en) | Deburring method and device thereof | |
| JPH11207514A (en) | Machining method and finishing machine | |
| JPH031138Y2 (en) | ||
| JPS6149053B2 (en) | ||
| JP2003053616A (en) | Machining device and machining method | |
| JPH09117845A (en) | Square hole machining method in numerically controlled machine tool | |
| JPH0121700Y2 (en) | ||
| RU2133656C1 (en) | Method for turning spherical surfaces of openings | |
| JPS6052903B2 (en) | How to grind the cutting edge of a ball end mill | |
| JP2983050B2 (en) | Processing long workpieces | |
| JPS6212504Y2 (en) | ||
| JPH09290304A (en) | Throwaway tip for poking cutter | |
| JP2006043805A (en) | Cutting tool, a method of forming two or more cylindrical projection using the cutting tool and support having the cylindrical projections | |
| JPH04300107A (en) | Method and tool for machining tip mounting surface | |
| JPH06320320A (en) | Cutting work method | |
| JPH11347803A (en) | Throwaway tip and ram machining cutter | |
| JPH0639610A (en) | Throwaway tip and cutting tool |