JPH0329044Y2 - - Google Patents

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Publication number
JPH0329044Y2
JPH0329044Y2 JP1984103967U JP10396784U JPH0329044Y2 JP H0329044 Y2 JPH0329044 Y2 JP H0329044Y2 JP 1984103967 U JP1984103967 U JP 1984103967U JP 10396784 U JP10396784 U JP 10396784U JP H0329044 Y2 JPH0329044 Y2 JP H0329044Y2
Authority
JP
Japan
Prior art keywords
slope
chip
cutting
cutting edge
land
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.)
Expired
Application number
JP1984103967U
Other languages
Japanese (ja)
Other versions
JPS6120204U (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP10396784U priority Critical patent/JPS6120204U/en
Publication of JPS6120204U publication Critical patent/JPS6120204U/en
Application granted granted Critical
Publication of JPH0329044Y2 publication Critical patent/JPH0329044Y2/ja
Granted legal-status Critical Current

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  • Cutting Tools, Boring Holders, And Turrets (AREA)

Description

【考案の詳細な説明】 [産業上の利用分野] 本考案は、旋削工具本体に着脱自在に固着して
金属などを切削するスローアウエイチツプに係
り、さらに詳細には、浅切込みで低速送りから、
深切込みで高速送り、あるいは面削りなどの切削
において効果的な切屑処理ができるように該チツ
プを改良したものである。
[Detailed description of the invention] [Industrial application field] The present invention relates to a throw-away tip that is removably fixed to the main body of a turning tool and is used to cut metal, etc. ,
This chip has been improved so that it can effectively dispose of chips when cutting at deep depths of cut, at high speed, or when facing.

[従来の技術] 従来、金属の切削において、切屑を強制的に曲
げ、または小さく折りながら生成させ、切屑の排
出性を高めて安全性と作業性とを向上させる手段
として、多くのチツプにはブレーカ溝が設けら
れ、このブレーカ溝の幅または曲率半径を変える
ことによつて各種の切削条件に適合させて切屑処
理をおこなわせるようにしている。
[Prior Art] Conventionally, in metal cutting, many chips have been used as a means of forcibly bending or folding chips into small pieces to improve chip evacuation and improve safety and workability. A breaker groove is provided, and by changing the width or radius of curvature of the breaker groove, chip disposal can be performed in accordance with various cutting conditions.

また、生成切屑のブレーカ効果をより高めるた
めに、チツプのノーズ近傍のブレーカ溝内に窪み
を設けたものや、イボ状の突起を設けて、切込み
が浅く低速送りの軽切削のときは前記窪み部やイ
ボ状部で切屑を破砕し、切込みが大きく高速送り
の重切削の場合はブレーカ溝によつて切屑を破砕
させるようにしたものである。
In addition, in order to further enhance the breaker effect of generated chips, a recess is provided in the breaker groove near the nose of the chip, or a wart-like protrusion is provided. In the case of heavy cutting with a large depth of cut and high speed feed, the chips are broken up by the breaker groove.

[考案が解決しようとする課題] しかしながら、前々記したブレーカ溝の幅およ
び曲率半径を小さく設定したものにおいては、切
込みが浅く、低送りの場合には適合するが、切込
みが深く、高送りのときには適さないというよう
に、一方を満足させれば他方に問題が生じて汎用
性を高めることができない。
[Problem to be solved by the invention] However, in the case where the width and radius of curvature of the breaker groove described above are set small, the depth of cut is shallow and it is suitable for low feeds, but the depth of cut is deep and it is suitable for high feeds. If one is satisfied, problems will arise in the other, making it impossible to increase versatility.

そして、前記したノーズ近傍のブレーカ溝内に
窪み、またはイボ状の突起を設けたものにおいて
は、切削中に窪み部内にスケールが溜まつたり、
イボ状部が摩耗したりして所期の切屑破砕処理を
長期にわたつておこなうことができない。
In the case where the breaker groove near the nose is provided with a depression or a wart-like protrusion, scale may accumulate in the depression during cutting.
The wart-like portion may wear out, making it impossible to perform the intended chip crushing process over a long period of time.

しかも、上記した形状のいずれのチツプも、切
刃の全体を切削に関与させる、例えば、面削りの
場合の切屑破砕処理の対応策がなされておらず、
このため生成切屑によつて切削性ならびに加工精
度が低下するという問題点も有している。
Furthermore, none of the above-mentioned shapes involve the entire cutting edge in cutting, for example, there is no countermeasure for chip crushing in the case of face milling.
For this reason, there is also the problem that machinability and machining accuracy are degraded by the generated chips.

[考案の目的] 本考案は、上記したような問題点に鑑みなした
もので、軽切削または重切削あるいは面切削など
に用いても的確な切屑破砕作用を発揮し、切屑の
排出効果を高め作業性と安全性とを向上させるス
ローアウエイチツプを提供することを目的とする
ものである。
[Purpose of the invention] The present invention was developed in view of the above-mentioned problems, and exhibits an accurate chip crushing effect even when used for light cutting, heavy cutting, surface cutting, etc., and improves the chip discharge effect. The object of the present invention is to provide a throw-away tip that improves workability and safety.

[課題を解決するための手段] 本考案は、前々記した課題を下記する手段によ
つて解決したものである。
[Means for Solving the Problems] The present invention solves the aforementioned problems by the means described below.

つまり、板状の多角形をなすチツプの上下面ま
たは一方の面に、中央部には平坦部を形成し、外
周部には前記平坦部とほゞ面一か、もしくは芯下
りに切刃稜を有したランドを該チツプの中央部に
向つて下がる傾斜を有せしめて形成し、かつ、こ
のランドと前記切刃稜とに複数の直線状または曲
線状からなる波状の凹凸を形成し、前記ランドに
連続して形成する溝の形状は、チツプ中央部に向
つて下がる第1斜面と、チツプ中央部に向つて上
がる第2斜面および後端斜面とを有し、この第1
斜面と第2斜面とは第1底面で連続させ、第2斜
面と後端斜面は第2底面で連続し、かつ前記平坦
部からノーズの切刃稜に向う突出部と、直像状の
切刃稜に向う複数の突起部を後端斜面に形成させ
たものである。
In other words, a flat part is formed in the center on the upper and lower surfaces or one side of a polygonal chip, and a cutting edge is formed on the outer periphery that is approximately flush with the flat part or downward from the center. A land having a slope downward toward the center of the chip is formed, and a plurality of linear or curved wavy irregularities are formed on the land and the cutting edge ridge, The shape of the groove formed continuously on the land has a first slope that goes down toward the center of the chip, a second slope that goes up toward the center of the chip, and a rear end slope.
The slope and the second slope are continuous on the first bottom surface, the second slope and the rear end slope are continuous on the second bottom surface, and a protrusion from the flat part toward the cutting edge of the nose and a rectangular cutting edge are formed. A plurality of protrusions are formed on the rear end slope toward the edge of the blade.

[考案の作用] 本考案は、以上に述べたように、チツプに設け
る切刃稜ならびにランドをポジテイブに形成した
ので切削抵抗は著しく低減して切削性を大きく向
上させる。しかも切刃稜およびランドは、ノーズ
部分を除いて波状に形成させたから深切込み、ま
たは切刃の全体を切削に関与させる面削りにおい
ても切屑は、きわめて折れ易いものが生成され
る。
[Operation of the invention] As described above, in the present invention, the cutting edge and land provided on the chip are formed positively, so cutting resistance is significantly reduced and machinability is greatly improved. Moreover, since the cutting edge ridge and land are formed in a wavy shape except for the nose portion, chips that are extremely easily broken are generated even in deep cutting or face milling in which the entire cutting edge is involved in cutting.

以上のような折れ易い切屑は、第1斜面と第1
底面および第2斜面と第2底面へと各面に摩過し
ていくことで大部分の切屑は波砕されていく、さ
らに破砕が不完全な切屑は後端斜面に設けた突起
部に衝突することによつて完全に破砕される。
The chips that break easily as described above are located on the first slope and the first slope.
Most of the chips are broken by waves as they are rubbed against the bottom surface, the second slope, and the second bottom surface, and the chips that are not completely crushed collide with the protrusion provided on the rear end slope. It is completely crushed by doing this.

また、軽切削で、主にノーズ部分から切屑が生
成される場合、従来はカールした細くて長い処理
性の困難な切屑であつたが、これも上記したのと
同様に第1斜面と第1底面および第2斜面と第2
底面へと摩過させ、さらに後端傾斜に設けた突出
部に衝突させることによつて完全に破砕された処
理性の良好な切屑となつて切屑による弊害を極め
て少なくするものである。
In addition, when chips are generated mainly from the nose part during light cutting, conventionally they were curled thin and long chips that were difficult to process, but this is also the case with the first slope and the first slope. The bottom surface and the second slope and the second
By abrading it to the bottom surface and colliding it with a protrusion provided on the slope of the rear end, the chips are completely crushed and easily disposed of, thereby minimizing the harmful effects of the chips.

[実施例] 以下、本考案の実施例を添付して図面にもとづ
いて説明する。
[Embodiments] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

図は、いずれも本考案になるスローアウエイチ
ツプを示したもので、第1図は全体的平面図、第
2図は第1図の底面図、第3図は第1図の要部の
縦断面図で、そのaはA−A断面図、同bはB−
B断面図、同cC−C断面図、第4図は第1図の
要部を拡大した説明図などである。
The figures show the throw-away tip according to the present invention. Figure 1 is an overall plan view, Figure 2 is a bottom view of Figure 1, and Figure 3 is a vertical cross-section of the main parts of Figure 1. In the top view, a is a sectional view taken along the line A-A, and b is a cross-sectional view taken along the line A-A.
B sectional view, cC-C sectional view, and FIG. 4 are explanatory diagrams in which the main parts of FIG. 1 are enlarged.

切削工具本体(図示省略)のチツプ座へ着脱自
在に固定する硬物質からなる板状で多角形(実施
例は三角)のチツプ1は、その中央にボルトまた
はピンが挿通する貫通孔10が設けられ、該チツ
プの中央部の上下面には平坦部11,11aが形
成され、この平坦部11,11aとほゞ平行か、
やゝ芯下りで、逃げ面12とランド13,13a
が交差することによつて構成される切刃稜14,
14aがチツプの外周に設けられている。
A plate-shaped, polygonal (triangular in this example) chip 1 made of a hard material and removably fixed to the chip seat of a cutting tool main body (not shown) has a through hole 10 in the center through which a bolt or pin is inserted. Flat parts 11, 11a are formed on the upper and lower surfaces of the central part of the chip, and the flat parts 11, 11a are approximately parallel to or
The flank 12 and the lands 13, 13a are located downward from the core.
A cutting edge 14 formed by intersecting
14a is provided on the outer periphery of the chip.

上記したランド13,13aはチツプの中央部
に向つて下がる傾斜角θ、すなわち1〜25゜の範
囲(好ましくは3〜20゜、実施例は10゜)から切削
条件等によつて選択して形成する傾斜ランドとな
つている。しかも該切刃稜と該ランドは第2図に
示すように、該チツプのノーズ部分を除いて直線
状または曲線状の凹凸で波形に形成されている。
The above lands 13, 13a are selected depending on the cutting conditions, etc., from the angle of inclination θ, which is downward toward the center of the chip, in the range of 1 to 25 degrees (preferably 3 to 20 degrees, 10 degrees in the example). It forms a sloped land. Moreover, as shown in FIG. 2, the cutting edge and the land are formed in a wavy shape with linear or curved irregularities, except for the nose portion of the chip.

上記のランド13,13aに続いて形成する溝
Aの第1図A−A断面における形状は、該ランド
の傾斜角と同方向に12〜40゜(好ましくは15〜35゜、
実施例は25゜)の角度θaで形成する第1斜面15
と、チツプ中央部に向つて上がる10〜35゜(好まし
くは15〜30゜、実施例は20゜)の角度θbを有する第
2斜面15aと、該第2斜面と同方向で10〜60゜
(好ましくは20〜50゜、実施例は45゜)の角度θcか
ら形成する後端斜面15bが設けられている。
The shape of the groove A formed following the lands 13, 13a in the cross section of FIG. 1 is 12 to 40 degrees (preferably 15 to 35 degrees, preferably 15 to 35 degrees,
The first slope 15 is formed at an angle θa of 25° in the embodiment.
and a second slope 15a having an angle θb of 10 to 35 degrees (preferably 15 to 30 degrees, 20 degrees in the embodiment) rising toward the center of the chip, and a second slope 15a having an angle θb of 10 to 60 degrees in the same direction as the second slope. A rear end slope 15b is provided which forms an angle θc of (preferably 20 to 50°, 45° in the embodiment).

この第1斜面15と第2斜面15aとは第1底
面16によつて接続させるのと共に、第2斜面1
5aと後端斜面15bとは第2底面16aによつ
て接続されている。
The first slope 15 and the second slope 15a are connected by a first bottom surface 16, and the second slope 15a is connected by a first bottom surface 16.
5a and the rear end slope 15b are connected by a second bottom surface 16a.

また、第3図のbに示したものは、第1図のB
−B断面図であるが、前記したように切刃稜1
4,14aとランド13,13aとは凹凸状の波
形に形成されているため、その位置関係は前記し
た第1図A−A断面の箇所に比べて深くなり、後
端斜面15aは大きく形成されるようになる。
Also, what is shown in b in Figure 3 is B in Figure 1.
-B sectional view, as mentioned above, the cutting edge 1
4, 14a and the lands 13, 13a are formed in an uneven wave shape, so their positional relationship is deeper than that of the section AA in FIG. 1 described above, and the rear end slope 15a is formed large. Become so.

すなわち、平坦部から切刃14側に向つて突起
部17が所定数設けられており、この突起部が前
記した波形の凸部相当位置に形成され、波形の凹
部に相当する位置には突起部がないためである。
That is, a predetermined number of protrusions 17 are provided from the flat part toward the cutting blade 14 side, and these protrusions are formed at positions corresponding to the convex parts of the waveform described above, and protrusions are formed at positions corresponding to the concave parts of the waveform. This is because there is no

また、第3図のcに示した第1図のC−C断面
の形状は、平坦面11からノーズB方向へ形成す
る突出部18を前記した突起部17よりやゝ切刃
側へ接近させて第2底面16aを長く形成して軽
切削時の切屑破砕性を高めるようにしてある。
In addition, the shape of the CC cross section in FIG. 1 shown in FIG. The second bottom surface 16a is formed long to improve chip crushability during light cutting.

なお、以上に述べたチツプ断面の稜線形状は、
直線的なものとなつているが、これを直線と曲線
であつてもよいし、すべてを曲線状に形成させて
もよい。
The ridgeline shape of the chip cross section described above is
Although it is shown as a straight line, it may be a straight line and a curved line, or it may be formed entirely in a curved line.

そして、上記の実施例は、チツプの両側面に前
記した形状を形成させたものについて述べたが、
これをチツプの片側面のみに形成させてもよい
し、このチツプの所望箇所または全面にチタンの
炭化物や窒化物あるいは酸化アルミニウムの薄膜
を単層または複層のものを形成させて用いてもよ
いし、三角形以外の多角形、すなわち、四角形や
菱形のチツプに前々記した構成を形成させて用い
てもよい。
In the above embodiment, the above-mentioned shape was formed on both sides of the chip.
This may be formed only on one side of the chip, or a thin film of titanium carbide, nitride, or aluminum oxide may be formed in a single layer or in multiple layers on a desired location or on the entire surface of the chip. However, the above-mentioned structure may be formed on a polygonal chip other than a triangular shape, that is, a quadrangular or rhombic chip.

[考案の効果] 本考案になるチツプを用いて以下の条件によつ
て切削試験をおこなつた。
[Effect of the invention] A cutting test was conducted using the chip of the invention under the following conditions.

1 外丸削り 試験の目的:外径削りによる切屑のブレーキング
作用の確認 工具:チツプ(型番DNMG150408 BP4) ホルダー(型番MDJNL2525 M15) 試験機:大隈鉄工所製 CNC旋盤 被削材:S45C 周速:150m/min 送り:0.05〜0.5mm/rev 切込み:0.25〜6.0mm 以上の試験の結果、切屑のブレーキング効果は
良好であつた。
1 Purpose of outer round cutting test: Checking the breaking effect of chips by outer diameter cutting Tools: Chip (model number DNMG150408 BP4) Holder (model number MDJNL2525 M15) Testing machine: CNC lathe manufactured by Okuma Iron Works Work material: S45C Peripheral speed: 150 m /min Feed: 0.05 to 0.5 mm/rev Depth of cut: 0.25 to 6.0 mm The results of tests showed that the chip breaking effect was good.

2 端面引上げ切削 試験の目的:端面引上げ切削時の切屑処理性の確
認 工具:チツプ(型番DNMG150408×BP4) ホルダー(型番DDQNL 164C) 試験機:大隈鉄工製 CNC旋盤 被削材:S50C 周速:100m/min 切込み:0.1〜1mm 以上の試験の結果、端面引上げ切削時の切屑処
理性は良好なものであつた。
2 Purpose of end face lifting cutting test: Confirmation of chip disposability during end face pulling cutting Tool: Chip (model number DNMG150408×BP4) Holder (model number DDQNL 164C) Testing machine: CNC lathe manufactured by Okuma Iron Works Work material: S50C Peripheral speed: 100 m /min Depth of cut: 0.1 to 1 mm or more As a result of the test, the chip disposability during end face lifting cutting was good.

以上の試験から本考案になるチツプを考察する
と、浅い切込みで、低速送りの軽切削において、
ノーズ近傍に設けた突出部ならびに第2底面によ
つて好果的に切屑破砕作用がなされ、深い切込み
で、高速送りの重切削の場合には上記したノーズ
近傍に設けた突出部と、第2底面の作用と共に、
切刃およびランド形成した波状部が生成切屑を縦
方向に分割し、該切屑が突起部に衝突することに
より切屑は適当に折れた。
Considering the chip devised from the above tests, it can be seen that in light cutting with shallow depth of cut and low speed feed,
The protrusion provided near the nose and the second bottom surface effectively perform the chip crushing action, and in the case of deep cutting and heavy cutting with high speed feed, the protrusion provided near the nose and the second bottom surface are used. With the action of the bottom,
The cutting edge and the wavy portion formed by the land divided the produced chips in the longitudinal direction, and the chips were appropriately broken by colliding with the protrusion.

また、フランジなどの面切削すなわち端面引き
上げ切削においては切刃全体から生成される切屑
は、まず波状部によつて縦方向に分断され、これ
が第1底面および第2斜面と第2底面を通過して
突起部を有する後端斜面に衝突して容易に破砕し
た。
In addition, in surface cutting of a flange or the like, that is, end face lifting cutting, the chips generated from the entire cutting edge are first divided vertically by the wavy portion, and then the chips pass through the first bottom surface, the second slope, and the second bottom surface. It collided with the rear end slope having a protrusion and was easily crushed.

そして、ブレーカ溝の形状は、それぞれの箇所
が適宜変化しているのと同時に、突出部ならびに
突起部の切屑衝突面は有効斜面が長く形成される
ので長期の切屑ブレーキング作用に耐え得るな
ど、本考案によれば軽切削から重切削あるいは面
切削においても生成切屑を効果的に破砕して安全
性ならびに作業性またはチツプの汎用性を高める
ものである。
The shape of the breaker groove changes appropriately at each location, and the protrusion and the chip collision surface of the protrusion have long effective slopes, so they can withstand long-term chip breaking action. According to the present invention, chips are effectively crushed in light to heavy cutting or surface cutting, thereby increasing safety, workability, and versatility of the chip.

【図面の簡単な説明】[Brief explanation of the drawing]

図は、いずれも本考案になるスローアウエイチ
ツプを示したもので、第1図は全体的平面図、第
2図は第1図の底面図、第3図は第1図の要部の
縦断面図で、そのaはA−A断面図、同bはB−
B断面図、同cはC−C断面図、第4は第1図の
要部を拡大した説明図などである。 1……スローアウエイチツプ、10……貫通
孔、11,11a……平坦部、12……逃げ面、
13,13a……ランド、14,14a……切刃
稜、15……第1斜面、15a……第2斜面、1
5b……後端斜面、16……第1底面、16a…
…第2底面、A……溝、B……ノーズ。
The figures show the throw-away tip according to the present invention. Figure 1 is an overall plan view, Figure 2 is a bottom view of Figure 1, and Figure 3 is a vertical cross-section of the main parts of Figure 1. In the top view, a is a sectional view taken along the line A-A, and b is a cross-sectional view taken along the line A-A.
4 is an enlarged explanatory view of the main part of FIG. 1. FIG. 1... Throwaway chip, 10... Through hole, 11, 11a... Flat part, 12... Flank surface,
13, 13a... Land, 14, 14a... Cutting edge ridge, 15... First slope, 15a... Second slope, 1
5b... Rear end slope, 16... First bottom surface, 16a...
...second bottom surface, A...groove, B...nose.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 板状で多角形をなすチツプの上下面または一方
の面に、中央部には平坦部を形成し、外周部には
前記平坦部とほゞ面一か、もしくは、芯下りに切
刃稜を有したランドを該チツプの中央部に向つて
下がる傾斜を有し、しかも、このランドと前記切
刃稜とに複数の直線状または曲線状からなる波状
の凹凸を形成し、前記ランドに連続して形成する
溝の形状は、チツプ中央部に向かつて下がる第1
斜面と、チツプ中央部に向かつて上がる第2斜面
および後端斜面とを有し、この第1斜面と第2斜
面とは第1底面で連続させ、第2斜面と後端斜面
は第2底面で連続し、かつ前記平坦部からノーズ
方向の切刃稜に向う突出部と、直線状の切刃稜に
向う複数の突起部を後端斜面に形成させたことを
特徴とするスローアウエイチツプ。
A flat part is formed in the center on the upper and lower surfaces or one side of a plate-shaped polygonal chip, and a cutting edge is formed on the outer periphery approximately flush with the flat part or downward from the core. The land has a slope downward toward the center of the chip, and a plurality of linear or curved wavy irregularities are formed between the land and the ridge of the cutting edge, and the land is continuous with the land. The shape of the groove formed by
It has a slope, a second slope and a rear end slope that rise toward the center of the chip, the first slope and the second slope are continuous at the first bottom surface, and the second slope and the rear end slope are connected to the second bottom surface. 1. A throw-away tip, characterized in that a protruding part that is continuous with the flat part and extends from the flat part toward the cutting edge ridge in the nose direction, and a plurality of linear protrusions that extend toward the cutting edge ridge are formed on the rear end slope.
JP10396784U 1984-07-09 1984-07-09 Throwaway tip Granted JPS6120204U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10396784U JPS6120204U (en) 1984-07-09 1984-07-09 Throwaway tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10396784U JPS6120204U (en) 1984-07-09 1984-07-09 Throwaway tip

Publications (2)

Publication Number Publication Date
JPS6120204U JPS6120204U (en) 1986-02-05
JPH0329044Y2 true JPH0329044Y2 (en) 1991-06-21

Family

ID=30663334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10396784U Granted JPS6120204U (en) 1984-07-09 1984-07-09 Throwaway tip

Country Status (1)

Country Link
JP (1) JPS6120204U (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63164799U (en) * 1987-04-14 1988-10-27
JP2505355Y2 (en) * 1988-11-09 1996-07-31 日本特殊陶業株式会社 Slow away tip
DE202006018992U1 (en) * 2006-12-16 2007-04-05 Kennametal Inc. Cutting insert for processing one-sided cover surface, has chip-shaped units formed at wall sections and arranged at same distance to one another, where chip-shaped units have roof area and flanks that are inclined to chip-shaped base
KR20120050483A (en) * 2009-09-25 2012-05-18 가부시키가이샤 탕가로이 Cutting insert and cutting tool
DE112017000671B4 (en) 2016-02-05 2024-01-04 Kyocera Corporation Use, cutting tool and method of producing a machined product
JP7168655B2 (en) * 2018-03-27 2022-11-09 京セラ株式会社 Manufacturing method of cutting insert, cutting tool and cutting work

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58191906U (en) * 1982-06-11 1983-12-20 東芝タンガロイ株式会社 Throwaway tip
JPS5966509U (en) * 1982-10-27 1984-05-04 東芝タンガロイ株式会社 Throwaway tip

Also Published As

Publication number Publication date
JPS6120204U (en) 1986-02-05

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