JPH0839321A - Rotary cutting tool and cutting method - Google Patents
Rotary cutting tool and cutting methodInfo
- Publication number
- JPH0839321A JPH0839321A JP6177086A JP17708694A JPH0839321A JP H0839321 A JPH0839321 A JP H0839321A JP 6177086 A JP6177086 A JP 6177086A JP 17708694 A JP17708694 A JP 17708694A JP H0839321 A JPH0839321 A JP H0839321A
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- tool
- tip
- rotary cutting
- 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.)
- Granted
Links
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
- B23C5/109—Shank-type cutters, i.e. with an integral shaft with removable cutting inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/045—Round
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2220/00—Details of milling processes
- B23C2220/56—Plunge milling
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、工具を回転させながら
軸方向に往復動させて切削加工を行う回転切削工具と、
それを用いた平面切削方法に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary cutting tool for cutting by reciprocating in the axial direction while rotating the tool.
The present invention relates to a plane cutting method using the method.
【０００２】[0002]
【従来の技術】従来、回転切削工具を軸方向に移動させ
てワークを平面加工するには、往復動の一方でワークを
加工し、他方ではワークを工具をワークから離して戻す
ことを繰り返す。切削能率を上げるために、平面加工で
はなく中ぐり加工ではあるが、実開昭５８−４７４０８
号公報に、工具の往動と復動の両方においてワークを加
工する技術が示されている。そこでは、ワークが回転さ
れ、工具は回転されずに軸方向に往復動され、工具本体
には荒加工用チップと仕上げ加工用チップがとりつけら
れていて、往動時には荒加工用チップで荒加工し、軸と
直角方向に工具本体を移動させた後復動させて仕上げ加
工用チップで仕上げ加工することにより、ワークの中ぐ
り切削加工が行われる。2. Description of the Related Art Conventionally, in order to move a rotary cutting tool in the axial direction to machine a workpiece in a plane, the workpiece is machined on one side of the reciprocating motion and the tool is separated from the workpiece and returned on the other side. In order to improve the cutting efficiency, it is not boring but boring, but it is actually opened in 58-47408.
The publication discloses a technique for machining a work in both forward and backward movements of a tool. There, the workpiece is rotated, the tool is reciprocated in the axial direction without rotating, and the tool body is equipped with roughing inserts and finishing inserts. Then, the tool main body is moved in the direction perpendicular to the axis, then moved back and finished with the finishing tip, thereby boring the workpiece.
【０００３】[0003]
【発明が解決しようとする課題】しかし、実開昭５８−
４７４０８号公報の技術ではワーク回転、工具非回転の
ため、平面切削を行えない。また、たとえワークを非回
転とし、工具を回転させて往動と復動間で工具を軸直角
方向に送っても、工具径の大きい仕上げチップ（復動チ
ップが切削するため、往動の加工チップと復動の加工チ
ップをつけても往動チップは切削しない。また、復動チ
ップが往復加工するため切削の向きが変わり、均一な加
工面が得られない。この場合、チップを往動と復動とで
同種のチップにすると、往動と復動とでチップにつけて
ある軸方向すくい角が逆になり、切削抵抗が変わって、
切削面の粗さが往動と復動で変わり、やはり均一加工面
が得られない（このため、従来は片道加工としてい
る）。本発明の目的は、工具の往動と復動との両方でワ
ークの平面切削加工ができて切削能率を向上でき、しか
も往動と復動とで切削条件を同じにできて均一な粗さの
加工面を得ることができる回転切削工具と、それを用い
た切削方法を提供することにある。[Problems to be Solved by the Invention]
According to the technique disclosed in Japanese Patent No. 47408, the work is rotated and the tool is not rotated, so that the plane cutting cannot be performed. Even if the workpiece is not rotated and the tool is rotated to feed the tool in the direction perpendicular to the axis between the forward and backward movements, a finishing tip with a large tool diameter (since the backward movement tip cuts Even if a tip and a return processing tip are attached, the forward movement tip does not cut, and since the return movement tip reciprocates, the cutting direction changes and a uniform processing surface cannot be obtained. If the same type of insert is used for the back and forth movement, the axial rake angle attached to the tip will be reversed between the forward and backward movements, and the cutting resistance will change.
The roughness of the cutting surface changes between forward and backward movement, and it is not possible to obtain a uniform machined surface (for this reason, conventional one-way machining is used). An object of the present invention is to perform flat surface cutting of a work in both forward and backward movements of a tool to improve the cutting efficiency, and to make the cutting conditions the same in the forward and backward movements to obtain a uniform roughness. To provide a rotary cutting tool capable of obtaining a machined surface and a cutting method using the same.
【０００４】[0004]
【課題を解決するための手段】上記目的を達成する、本
発明の回転切削工具と、切削方法は次の通りである。 （１）回転される工具本体と、前記工具本体に軸方向の
すくい角が０°となるようにとり付けられた少なくとも
１個のチップと、を有する回転切削工具。 （２）回転される工具本体にチップを軸方向すくい角を
０°にしてとり付けた回転切削工具を、回転させながら
往動させてワークを切削加工し、往動終端で軸と直角方
向に送り、回転させながら復動させてワークを切削加工
する、工程からなる切削サイクルを、切削サイクル間に
回転切削工具を軸と直角方向に送って、複数回、繰り返
す切削方法。The rotary cutting tool and the cutting method of the present invention which achieve the above object are as follows. (1) A rotary cutting tool having a tool body to be rotated and at least one tip attached to the tool body so that the rake angle in the axial direction is 0 °. (2) A rotary cutting tool with a chip rake angle of 0 ° attached to the rotating tool body is moved forward while rotating to cut the workpiece, and at the end of the forward movement, the workpiece is cut in the direction perpendicular to the axis. A cutting method in which a rotating cutting tool is sent in the direction perpendicular to the axis during the cutting cycle, and the work is cut by reciprocating while feeding and rotating, and the work is repeated multiple times.
【０００５】[0005]
【作用】上記回転切削工具では、工具本体にとりつけら
れたチップの軸方向すくい角（アキシャルレーキ）を０
°としたため、加工条件が往動時と復動時とで同じにな
り、往動、復動の両方でチップをワークに当てて加工し
ても、均一粗さの切削平面が得られる。また、上記切削
方法では、往動と復動の両方でチップをワークに当てて
切削するので、従来の往復動の一方のみで切削を行って
いた平面加工に比べて、加工能率をほぼ２倍に改善でき
る。加工時間で言えば、ほぼ１／２にできる。In the above rotary cutting tool, the axial rake angle (axial rake) of the tip mounted on the tool body is set to 0.
Since the angle is set to 0, the machining conditions are the same in the forward and backward movements, and even if the tip is applied to the work piece in both the forward and backward movements, a cutting plane with uniform roughness can be obtained. Further, in the above-mentioned cutting method, the tip is applied to the work piece in both the forward and backward movements for cutting, so that the machining efficiency is almost doubled as compared with the conventional flat machining in which only one of the reciprocating motions is performed. Can be improved. In terms of processing time, it can be halved.
【０００６】[0006]
【実施例】図１〜図３は本発明の一実施例に係る回転切
削工具を示している。図１〜図３において、工具本体１
は、工作機の主軸（図示せず）に従来公知の方法で着脱
可能にとりつけられて、主軸とともに回転される。工具
本体１の、主軸にとりつけられる側と反対側の先端部に
は、チップ（工具刃）２が少なくとも１個ビス３等（図
３参照）によりとりつけられている。図１の例では、チ
ップ２の形状が円形で、チップ２のとりつけ個数が２の
場合を示している。チップ２の形状は、上下方向に軸対
称であれば円形以外の形状であってもよく、チップ個数
はとりつけスペースの範囲において任意である。1 to 3 show a rotary cutting tool according to an embodiment of the present invention. 1 to 3, the tool body 1
Is removably attached to a spindle (not shown) of a machine tool by a conventionally known method, and is rotated together with the spindle. At least one tip (tool blade) 2 is attached by a screw 3 or the like (see FIG. 3) to the tip of the tool body 1 on the side opposite to the side attached to the spindle. In the example of FIG. 1, the shape of the chip 2 is circular, and the number of chips 2 to be mounted is two. The shape of the chip 2 may be a shape other than a circular shape as long as it is axially symmetrical in the vertical direction, and the number of chips is arbitrary within the range of the mounting space.
【０００７】回転される工具本体にとりつけられるチッ
プには、切削しやすくするために、従来は、軸方向すく
い角（アキシャルレーキ）と半径方向すくい角（ラジア
ルレーキ）の両方がつけられていた。ここで、軸方向す
くい角とは、チップ２の回転方向前面のうち軸送り方向
前端部分が軸（工具本体）送り方向となす角度で、図３
にαで示されている角度を言い、従来は正の角度が付与
されていた。また、半径方向すくい角とは、チップ２の
回転方向前面のうち軸（工具本体）に対して半径方向外
側端部分が軸に対して半径方向となす角度で、図２のβ
で示されている角度を言い、従来正の角度が付与されて
いた。しかし、本発明では、チップ２の軸方向すくい角
αは０°としてある。すなわち、チップ２の回転方向前
面を工具本体１の軸芯と平行にしてチップ２を工具本体
１にとりつけてある。半径方向すくい角βに関しては、
従来と同じように、正または負のすくい角が付与してあ
る。Conventionally, both an axial rake angle (axial rake) and a radial rake angle (radial rake) are attached to a tip attached to a rotating tool body in order to facilitate cutting. Here, the axial rake angle is an angle formed by a front end portion of the tip 2 in the rotational direction of the rotational direction of the tip 2 with respect to the axial (tool body) feeding direction.
Is an angle indicated by α, and in the past, a positive angle was given. Further, the radial rake angle is an angle formed by a radially outer end portion of the front surface of the tip 2 in the rotational direction with respect to the shaft (tool body) and the radial direction with respect to the shaft.
The positive angle is conventionally given. However, in the present invention, the axial rake angle α of the tip 2 is set to 0 °. That is, the tip 2 is attached to the tool body 1 with the front surface in the rotation direction of the tip 2 parallel to the axis of the tool body 1. For the radial rake angle β,
As in the conventional case, a positive or negative rake angle is provided.
【０００８】図１は、また、チップ２の削り代（取代）
ｔと切削幅ｌa （往動時）、ｌb （復動時）の関係を示
している。ワーク４の加工後の面４ａと加工前の面４ｂ
との幅が取代ｔである。丸チップの場合、チップ中心
と、チップ外周円と面４ａとの交点との、軸方向（工具
本体の軸方向）距離が切削幅ｌa 、ｌb となる。往動の
切削幅ｌa と復動の切削幅ｌb は、チップがチップ中心
に対して軸方向（工具本体の軸方向）に対称であれば、
互いに等しくなる。丸チップの半径Ｒは、立壁面４ａの
加工の場合は、取代ｔより大であればよい。加工面が、
図５に示すように、立壁面４ａと底面４ｃの組み合わせ
からなる場合（直交２平面の加工の場合）は、コーナ部
の取り残し幅ｌを小さくする必要があり、直角を出すに
はｌ＝Ｒとなる。Ｒについては、立壁面４ａと底面４ｃ
を加工する時、取代ｔを加工する場合にチップ２が重複
して加工しないように、 Ｒ＝ｔ／（１−ｃｏｓ４５°） から求まる値が最小Ｒとなる。上記よりチップ２のＲを
決めておけば、立壁面４ａと底面４ｂの加工が１種の工
具で対応できる。FIG. 1 also shows the cutting allowance of the chip 2.
t the cutting width l a (forward scan), shows the relationship of l b (Fukudoji). Surface 4a after processing of work 4 and surface 4b before processing
The width of and is the allowance t. For round inserts, and chip center, the intersection of the chip peripheral circle and the surface 4a, the distance (the axial direction of the tool body) axis direction is the cutting width l a, l b. Cutting width l a and backward cutting width l b of the forward movement, if the chip is symmetrical in the axial direction (the axial direction of the tool body) to the chip center,
Become equal to each other. The radius R of the round tip may be larger than the machining allowance t in the case of processing the vertical wall surface 4a. The processed surface is
As shown in FIG. 5, when the vertical wall surface 4a and the bottom surface 4c are combined (in the case of machining two orthogonal planes), it is necessary to reduce the residual width l of the corner portion, and to obtain a right angle, l = R Becomes As for R, the vertical wall surface 4a and the bottom surface 4c
When machining the machining allowance t, the value obtained from R = t / (1-cos 45 °) is the minimum R so that the chips 2 are not machined redundantly when machining the machining allowance t. If the radius R of the tip 2 is determined from the above, machining of the vertical wall surface 4a and the bottom surface 4b can be performed with one type of tool.
【０００９】つぎに、上記の、工具本体１に軸方向すく
い角（アキシャルレーキ）が０°のチップ２を少なくと
も１つとりつけた回転切削工具を用いての切削方法につ
いて説明する。図４に示すように、立壁面の加工サイク
ルは、回転切削工具を、回転させながら、工具本体１の
軸方向に移動させながらチップ２でワーク立壁面４ｂを
切削加工して仕上面４ａとし、往きの終端で回転切削工
具を工具本体１の軸方向と直角方向にかつ立壁面４ｂに
平行に１ピッチ分送り、ついで回転切削工具を復動させ
てチップ２でワーク立壁面４ｂを切削加工する。上記を
１切削サイクルとした場合、１つのサイクルの復動の終
端から次のサイクルの往動の始端との間で、回転切削工
具を工具本体１の軸方向と直角方向にかつ立壁面４ｂに
平行に１ピッチ分送って、上記サイクルを複数回繰り返
すことにより、立壁面４ｂを平面切削加工する。図４に
は従来法も併せて示してある。従来は、往動で加工し、
往動終端で工具を立壁面から離れる方向に移動させた
後、離れたまま加工をすることなく復動させる。このサ
イクルを、１ピッチづつずらしながら複数回繰り返す。
本発明方法では、往動と復動の両方において加工を行う
が、従来法では往動と復動の何れか一方のみにおいてし
か加工を行わない。Next, a cutting method using the rotary cutting tool in which at least one tip 2 having an axial rake angle (axial rake) of 0 ° is attached to the tool body 1 will be described. As shown in FIG. 4, in the machining cycle of the standing wall surface, the rotary cutting tool is rotated and moved in the axial direction of the tool body 1 to cut the workpiece standing wall surface 4b with the tip 2 to form the finished surface 4a, At the end of the forward movement, the rotary cutting tool is fed by one pitch in a direction perpendicular to the axial direction of the tool body 1 and parallel to the vertical wall surface 4b, and then the rotary cutting tool is moved back to cut the vertical wall surface 4b of the workpiece with the tip 2. . When the above is defined as one cutting cycle, the rotary cutting tool is provided on the vertical wall surface 4b in the direction perpendicular to the axial direction of the tool body 1 between the end of the backward movement of one cycle and the start of the forward movement of the next cycle. By feeding one pitch in parallel and repeating the above cycle a plurality of times, the vertical wall surface 4b is subjected to planar cutting. FIG. 4 also shows the conventional method. Conventionally, it is processed in the forward motion,
At the end of the forward movement, move the tool away from the vertical wall surface, and then move it back away without machining. This cycle is repeated multiple times while shifting by one pitch.
In the method of the present invention, machining is performed in both forward and backward movements, but in the conventional method, machining is performed only in either forward or backward movements.
【００１０】次に、作用について説明する。本実施例の
回転切削工具ではチップ２の軸方向すくい角αを０°と
したので、往動時と復動時で軸方向すくい角は同じ（０
°）となって切削条件、切削抵抗は同じである。したが
って、往動の切削面の粗さと復動の切削面の粗さは同じ
で、均一な粗さの切削平面が得られる。図６は、チップ
に軸方向すくい角（α≠０）をつけた仮想の場合を本発
明との比較のためにつけてある。その場合は、往動の場
合に正の軸方向すくい角をつけると、復動の場合には負
の軸方向すくい角となって、正、負が逆になる。したが
って、往動時に切削抵抗が小さくても、復動時の切削抵
抗は大となり、往動の切削面と復動の切削面とで粗さが
変わってしまい、均一な粗さの加工面が得られない。こ
のような状態を避けるために、従来は復動では加工を行
えない。また、本実施例の切削方法では、図４に示すよ
うに、往動と復動の両方において切削加工を行うので、
従来のように往動と復動の何れか一方のみで切削加工を
行う場合に比べて、同一面積の平面を加工するに要する
加工時間が、本発明は従来の約１／２となる。Next, the operation will be described. In the rotary cutting tool of this embodiment, since the axial rake angle α of the tip 2 is set to 0 °, the axial rake angle is the same in the forward and backward movements (0
The cutting conditions and cutting resistance are the same. Therefore, the roughness of the forward cutting surface and the roughness of the backward cutting surface are the same, and a cutting plane having a uniform roughness can be obtained. FIG. 6 shows a hypothetical case in which a chip is provided with an axial rake angle (α ≠ 0) for comparison with the present invention. In that case, if a positive axial rake angle is given in the case of forward movement, a negative axial rake angle will be obtained in the case of backward movement, and positive and negative will be reversed. Therefore, even if the cutting resistance at the time of forward movement is small, the cutting resistance at the time of returning movement becomes large, and the roughness changes between the cutting surface of the forward movement and the cutting surface of the backward movement, resulting in a machined surface of uniform roughness. I can't get it. In order to avoid such a state, conventionally, machining cannot be performed by the backward movement. Further, in the cutting method of the present embodiment, as shown in FIG. 4, the cutting process is performed in both the forward movement and the backward movement.
Compared with the case where the cutting is performed only by one of the forward movement and the backward movement as in the related art, the processing time required for processing the flat surface of the same area is about 1/2 of that in the related art.
【００１１】[0011]
【発明の効果】請求項１の本発明の回転切削工具によれ
ば、往動と復動とで切削面粗さが同じになる。その結
果、往動と復動とで切削加工を行うことができ、しかも
均一の粗さの加工面が得られる。また、往動と復動の両
方で加工を行えるために、加工サイクルが簡単になり、
加工のためのデータ量が５０％削減できる。請求項２の
本発明の切削方法によれば、往動と復動の両方で切削加
工を行うので、同一面積の被加工面を切削加工するに要
する時間が、従来の往復動の一方のみで加工を行う場合
に比べて、約１／２となる。According to the rotary cutting tool of the first aspect of the present invention, the forward and backward movements have the same cutting surface roughness. As a result, the cutting process can be performed by the forward movement and the backward movement, and a processed surface having a uniform roughness can be obtained. Also, since machining can be performed both forward and backward, the machining cycle becomes simpler,
The amount of data for processing can be reduced by 50%. According to the cutting method of the present invention of claim 2, since the cutting is performed in both the forward and backward movements, the time required for cutting the work surface having the same area is only one of the conventional reciprocating movements. Compared with the case where processing is performed, it is about 1/2.
【図１】本発明の一実施例に係る回転切削工具の正面図
である。FIG. 1 is a front view of a rotary cutting tool according to an embodiment of the present invention.
【図２】図１の工具のＡ方向矢視図である。2 is a view of the tool of FIG. 1 as viewed in the direction of arrow A. FIG.
【図３】図１の工具の底面図である。3 is a bottom view of the tool of FIG. 1. FIG.
【図４】本発明の一実施例に係る切削方法の、回転切削
工具の移動軌跡図である。FIG. 4 is a movement trajectory diagram of a rotary cutting tool in a cutting method according to an embodiment of the present invention.
【図５】立壁面と底面とを丸チップで加工する場合の諸
寸法の関係を示す概略図である。FIG. 5 is a schematic view showing a relationship between various dimensions when a vertical wall is machined on a vertical wall surface and a bottom surface.
【図６】チップに軸方向すくい角をつけた場合、往動と
復動とで軸方向すくい角が逆になることを示す概略図で
ある。FIG. 6 is a schematic view showing that when the chip is provided with an axial rake angle, the forward rake and the backward rake have opposite axial rake angles.
１ 工具本体 ２ チップ ３ ビス ４ａ 立壁面（加工後） ４ｂ 立壁面（加工前） 1 Tool body 2 Tip 3 Screw 4a Standing wall surface (after processing) 4b Standing wall surface (before processing)
Claims (2)
り付けられた少なくとも１個のチップと、を有すること
を特徴とする回転切削工具。1. A rotary cutting tool comprising: a tool body to be rotated; and at least one tip attached to the tool body so that an axial rake angle is 0 °.
くい角を０°にしてとり付けた回転切削工具を、回転さ
せながら往動させてワークを切削加工し、往動終端で軸
と直角方向に送り、回転させながら復動させてワークを
切削加工する、工程からなる切削サイクルを、切削サイ
クル間に回転切削工具を軸と直角方向に送って、複数
回、繰り返すことを特徴とする切削方法。2. A rotary cutting tool, in which a chip is mounted on a rotating tool body with an axial rake angle of 0 °, is moved forward while rotating to cut a workpiece, and the work is cut at a right angle to the axis. The cutting cycle consists of the steps of feeding in the direction, rotating and returning to cut the work, and cutting the workpiece.The cutting cycle is repeated multiple times by sending the rotary cutting tool in the direction perpendicular to the axis during the cutting cycle. Method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17708694A JP3331759B2 (en) | 1994-07-28 | 1994-07-28 | Cutting method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP17708694A JP3331759B2 (en) | 1994-07-28 | 1994-07-28 | Cutting method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0839321A true JPH0839321A (en) | 1996-02-13 |
| JP3331759B2 JP3331759B2 (en) | 2002-10-07 |
Family
ID=16024888
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP17708694A Expired - Fee Related JP3331759B2 (en) | 1994-07-28 | 1994-07-28 | Cutting method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3331759B2 (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105121A (en) * | 2006-10-24 | 2008-05-08 | Hitachi Tool Engineering Ltd | Longitudinal feed cutting tool for forward and backward feed cutting |
| JP2009255182A (en) * | 2008-04-11 | 2009-11-05 | Mitsubishi Materials Corp | Tool body of cutter for plunge cutting, cutter for plunge cutting, and plunge cutting method |
| WO2011052682A1 (en) | 2009-11-02 | 2011-05-05 | 住友電工ハードメタル株式会社 | Method for processing difficult-to-cut cast iron |
| WO2022084984A1 (en) * | 2020-10-19 | 2022-04-28 | Iscar Ltd. | High-feed plunge milling tool |
-
1994
- 1994-07-28 JP JP17708694A patent/JP3331759B2/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008105121A (en) * | 2006-10-24 | 2008-05-08 | Hitachi Tool Engineering Ltd | Longitudinal feed cutting tool for forward and backward feed cutting |
| JP2009255182A (en) * | 2008-04-11 | 2009-11-05 | Mitsubishi Materials Corp | Tool body of cutter for plunge cutting, cutter for plunge cutting, and plunge cutting method |
| WO2011052682A1 (en) | 2009-11-02 | 2011-05-05 | 住友電工ハードメタル株式会社 | Method for processing difficult-to-cut cast iron |
| US9016987B2 (en) | 2009-11-02 | 2015-04-28 | Sumitomo Electric Hardmetal Corp. | Method for processing difficult-to-cut cast iron |
| WO2022084984A1 (en) * | 2020-10-19 | 2022-04-28 | Iscar Ltd. | High-feed plunge milling tool |
| US11731204B2 (en) | 2020-10-19 | 2023-08-22 | Iscar, Ltd. | High-feed milling tool |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3331759B2 (en) | 2002-10-07 |
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