JP2664086B2 - Coated cemented carbide tool - Google Patents

Coated cemented carbide tool

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Publication number
JP2664086B2
JP2664086B2 JP3452289A JP3452289A JP2664086B2 JP 2664086 B2 JP2664086 B2 JP 2664086B2 JP 3452289 A JP3452289 A JP 3452289A JP 3452289 A JP3452289 A JP 3452289A JP 2664086 B2 JP2664086 B2 JP 2664086B2
Authority
JP
Japan
Prior art keywords
cutting edge
cemented carbide
tool
coating
cutting
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 - Lifetime
Application number
JP3452289A
Other languages
Japanese (ja)
Other versions
JPH02218522A (en
Inventor
正明 飛岡
益男 中堂
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Sumitomo Electric Industries Ltd
Original Assignee
Sumitomo Electric Industries Ltd
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Priority to JP3452289A priority Critical patent/JP2664086B2/en
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Description

【発明の詳細な説明】 [産業上の利用分野] 本発明は被覆超硬合金工具に関し、特にガソリンエン
ジン,ディーゼルエンジン等のクランクシャフトのピン
およびジャーナル部分を加工するためのピンミリングな
どに用いられる、高強度かつ長寿命の被覆超硬合金工具
の製造方法に関するものである。
Description: TECHNICAL FIELD The present invention relates to a coated cemented carbide tool, and is particularly used for pin milling for machining pins and journals of a crankshaft of a gasoline engine, a diesel engine, or the like. The present invention relates to a method of manufacturing a coated cemented carbide tool having high strength and long life.

[従来の技術] クランクシャフトのピンおよびジャーナル部分は最終
的には研削加工されることが多いが、その前加工とし
て、フライス盤的な加工を行なうピンミラーマシンもし
くは旋削を行なうピンレースで切削加工することが一般
的である。特にピンミリングは、機械当たりの生産性が
極めて高いため、クランクシャフトのピンおよびジャー
ナル部分の切削加工法としては主流を占めている。
[Prior Art] A pin and a journal portion of a crankshaft are often finally ground, but as a pre-process, a pin mirror machine for performing milling or a pin race for turning is used. That is common. In particular, pin milling occupies the mainstream as a method of cutting the pins and journals of a crankshaft because the productivity per machine is extremely high.

このピンミリングに用いる切削加工は、その加工が極
めて厳しい断続加工であることから、ISO規格における
P−30グレードの強靭な超硬合金が使われていた。とこ
ろが最近の工業界において加工能率の向上や工具寿命の
延長が強く求められるに及んで、超硬合金に表面TiC,Ti
(CN),TiN,Al2O3などのセラミックスの薄膜を1層もし
くは複数層、統計で2μmから4μm程度被覆した被覆
超硬合金工具が使用されるようになった。
Since the cutting used for this pin milling is an extremely severe interrupted cutting, a tough cemented carbide of P-30 grade in the ISO standard has been used. However, with the recent demand for improved machining efficiency and extended tool life in the industrial world, cemented carbide has surface TiC, Ti
Coated cemented carbide tools in which one or more layers of a ceramic thin film such as (CN), TiN, Al 2 O 3, etc. are statistically coated in a thickness of about 2 μm to 4 μm have come to be used.

被覆超硬合金工具はP−30グレードの超硬合金工具に
比較すると大幅な寿命延長が得られる。
The life of the coated cemented carbide tool can be greatly extended as compared with the P-30 grade cemented carbide tool.

[発明が解決しようとする課題] しかしながら、工具寿命を延長するためにセラミック
スの被覆層を形成すると、工具の切刃表面にその母材よ
りも硬くて脆い被覆をしたことになり、それによって切
刃の靭性が低下する。この靭性低下は被覆層の厚さが大
きいほど顕著になる。したがって、この被覆のために、
その厚さに応じて工具切刃にチッピングが生じやすくな
って工具が大欠損してしまうおそれがある。その結果被
削材であるクランクシャフトを不良にするだけでは済ま
ずピンミラーの破損、さらにはピンミラーマシンそのも
のの故障が生じることもあり、大きな事故につながるお
それがあるという問題がある。
[Problems to be Solved by the Invention] However, if a ceramic coating layer is formed in order to extend the life of the tool, the cutting edge surface of the tool is coated harder and more brittle than the base material, thereby cutting. The toughness of the blade decreases. This decrease in toughness becomes more pronounced as the thickness of the coating layer increases. Therefore, for this coating,
Depending on the thickness, chipping is likely to occur on the tool cutting edge, and the tool may be largely broken. As a result, it is not enough to simply make the crankshaft, which is a work material, defective. First, the pin mirror may be damaged, and furthermore, the pin mirror machine itself may be broken, which may lead to a serious accident.

本発明は上記問題点を解消するため、工具寿命を延長
するとともに工具の切刃強度を向上した被覆超硬合金工
具を提供することを目的とする。
SUMMARY OF THE INVENTION An object of the present invention is to provide a coated cemented carbide tool having an extended tool life and an improved cutting edge strength of the tool in order to solve the above problems.

[課題を解決するための手段] 本発明に係る被覆超硬合金工具は、超硬合金を母材と
し、その表面に1種以上のセラミックスの薄膜を1層以
上、総計で0.5μm以上4μm以下の膜厚で被覆したも
のである。またこの被覆超硬合金工具の切刃部分には、
刃先エッジからすくい面側の0.01mm以上0.12mm以下の部
分においてホーニングによる面取りが施されている。さ
らに面取り部分の被覆膜厚の最小値が他の部分の被覆膜
厚の60%以下であることを特徴とするものである。
[Means for Solving the Problems] The coated cemented carbide tool according to the present invention is based on a cemented carbide as a base material, and has at least one layer of one or more ceramic thin films on its surface, for a total of 0.5 μm or more and 4 μm or less. With a film thickness of Also, the cutting edge of this coated cemented carbide tool has
Chamfering by honing is performed on the portion of 0.01 mm or more and 0.12 mm or less on the rake face side from the cutting edge. Furthermore, the minimum value of the coating thickness of the chamfered portion is not more than 60% of the coating thickness of the other portions.

[作用] 被覆超硬合金工具の切刃を、刃先エッジからすくい面
側の0.01mm以上0.12mm以下の部分において丸ホーニング
またはチャンファホーニングまでのホーニングによって
面取りを施すことにより、刃先での応力集中が減少して
強度が向上する。面取りの大きさが刃先エッジからすく
い面側の0.01mm未満では、応力集中低減の効果が十分で
はなく、また0.12mmを越えると切れ味が劣化して被削材
との摩擦が大きくなり、耐摩耗性に悪影響が生じる。
[Action] The stress concentration at the cutting edge of the coated cemented carbide tool is reduced by chamfering the cutting edge from the cutting edge to the round horn or chamfer honing from 0.01mm to 0.12mm on the rake face side. Decreases the strength. If the chamfer size is less than 0.01 mm on the rake face from the cutting edge, the effect of reducing stress concentration is not sufficient, and if it exceeds 0.12 mm, sharpness deteriorates and friction with the work material increases, resulting in wear resistance. Adversely affect sex.

また、切刃の面取り部の被覆膜厚の最小値を他の部分
の被覆膜厚の60%以下とするとにより、切刃全体の耐摩
耗性を低下させることなく、切刃の面取り部分の強度を
高くすることができる。切刃全体の耐摩耗性の低下がな
いのは、切刃の面取り部が被削材との衝突時に大きな衝
撃力を受けるものの、切削中は被削材と接触しないため
に、切削中に切粉と接触するすくい面等と比べて、面取
り部の摩耗量が比較的少ないからである。さらに、被覆
膜厚を小さくした部分の強度が高くなるのは、工具の母
材よりも硬くて脆い材料で被覆したことによる切刃の靭
性の劣化は、その被覆層の厚さが大きいほど顕著にな
り、被覆層を薄くすることによってこの靭性劣化が抑制
されるためである。
In addition, by setting the minimum value of the coating thickness of the chamfered portion of the cutting edge to 60% or less of the coating thickness of the other portions, the chamfered portion of the cutting edge can be reduced without reducing the wear resistance of the entire cutting edge. Can be increased in strength. The reason that the wear resistance of the entire cutting edge does not decrease is that the chamfered portion of the cutting edge receives a large impact force at the time of collision with the work material, but does not contact the work material during cutting. This is because the amount of wear of the chamfered portion is relatively small as compared with a rake face or the like that comes into contact with the powder. Furthermore, the strength of the part where the coating film thickness is reduced is increased because the toughness of the cutting edge due to coating with a harder and more brittle material than the base material of the tool decreases as the thickness of the coating layer increases. This is because the deterioration of toughness is suppressed by making the coating layer thinner.

[実施例] 以下本発明の一実施例を第1図を参照しながら説明す
る。
Embodiment An embodiment of the present invention will be described below with reference to FIG.

TiC,TaCおよびWCが結合した複炭化物が10vol%,Coが1
2vol%,残りWCからなる超硬合金を用いてピンミリング
用のフォームドバイトである超硬合金母材4を作製し、
その切刃に第1図に示すような曲率半径rが0.08mmの丸
ホーニングを行なって刃先の面取り部分3を形成した。
その後にCVD法にてTiCを0.5μm,Ti(CN)を0.5μm,Al2O
3を0.8μm,TiNを0.2μmを順次被覆し、総計2μmの被
覆層5を形成した。この被覆超硬合金工具をインターナ
ルタイプのピンミラー(工具取付部の直径250mm,刃数48
枚,実際に切削に関与する有効刃数24枚)に受け、S48C
からなるクランクシャフトのピン部を切削速度135m/mi
n,取り代片側3〜4mm,送り0.12から0.31mm/刃で切削し
たところ、1切刃当たり平均で2000ピン加工できた。
TiC, TaC and WC combined carbide are 10vol%, Co is 1
Using a cemented carbide consisting of 2vol% and the remaining WC, a cemented carbide base material 4 that is a formed bite for pin milling is prepared.
The cutting edge was subjected to round honing with a radius of curvature r of 0.08 mm as shown in FIG. 1 to form a chamfered portion 3 of the cutting edge.
After that, 0.5 μm of TiC, 0.5 μm of Ti (CN), Al 2 O
3 was sequentially coated with 0.8 μm and TiN with 0.2 μm to form a coating layer 5 having a total thickness of 2 μm. Use this coated cemented carbide tool as an internal type pin mirror (250 mm in diameter of the tool mounting part, 48 blades)
Sheet, the actual number of effective blades involved in cutting is 24), S48C
Cutting speed of 135m / mi
When cutting at a cutting edge of 3 to 4 mm on one side and a feed of 0.12 to 0.31 mm / blade, 2,000 pins could be processed on average per cutting edge.

この工具チップと同じく切刃の面取り部3の被覆膜厚
の最小値δが0.8μmになるまで種々被覆膜厚を変え
て全く同じ条件においてピンの加工を行なった結果を表
に示す。なお表には被覆膜厚の最小値δとそれに対応
する加工できたピンの本数を示す。
Showing the results of processing of the pins in the same conditions by changing the various coating thickness to a minimum [delta] 1 of the coating thickness of the chamfer 3 of the same cutting edge and the tool tip is 0.8μm Table . Note indicating the number of pins that can be processed and the corresponding minimum value [delta] 1 of the coating film thickness in the table.

上記実施例の結果からわかるように、切刃の面取り部
分の被覆膜厚の最小値δが1.2μm以下すなわち他の
部分の被覆膜厚(2.0μm)の60%以下において加工で
きたピンの本数が急激に延びており、3000本を越えてい
る。
As can be seen from the results of the above Examples, was processed at 60% or less of the coating thickness of the coating film minimum [delta] 1 is 1.2μm or less i.e. other portions of the thickness of the chamfer of the cutting edge (2.0 .mu.m) The number of pins has increased rapidly, exceeding 3,000.

切刃に面取りを施し、その部分の被覆膜厚を調整する
ことによって本実施例のような効果が得られる理由を以
下に説明する。
The reason why the effect as in the present embodiment can be obtained by chamfering the cutting edge and adjusting the coating film thickness at that portion will be described below.

超硬合金をを母材とし、その表面に数μmのセラミッ
クスの薄膜を被覆すると、その強度が被覆をしない母材
の約60〜80%に低下する。これは、工具の切刃にその母
材よりも硬くて脆い被覆をしたことになり、それによっ
て切刃の靭性が低下するからである。この靭性低下は被
覆層の厚さが大きいほど顕著になる。そのため特に鋭い
形状を有する工具の切刃部分は切削時に応力が集中し、
その被覆の厚さに応じてチッピングなどの欠損を生じや
すくなる。それを防止するために、被覆超硬合金工具で
は、切刃にいわゆる面取りを行ない、切刃への応力集中
を緩和させる。この面取りは大きければ大きいほど、応
力集中の低下も大きくなるために切刃の強度は強くなる
が、耐摩耗性が著しく低下する。これは面取りによって
刃先の鋭敏さが失われ、切れ味が劣化して被削材との摩
擦が大きくなるからである。したがって耐摩耗性を損な
うことなく強度を増すためには、適切な大きさの面取り
施す必要がある。通常は第1図に示す曲率半径rが0.03
〜0.10mm程度の丸ホーニングもしくは第2図に示すaが
0.08mm〜0.20mm,βが10゜〜20゜のチャンファーホーニ
ングが一般的である。しかしながらそれらの形状の面取
りに限ることはなく、少なくとも刃先のエッジからすく
い面6側の0.01mm以上0.12mm以下の部分においてホーニ
ングによる面取りが施されていれば、通常のミリング加
工などにおいて要求される耐摩耗性と強度を得られるこ
とが実験的に確認されている。
When a cemented carbide is used as a base material and its surface is coated with a thin film of ceramics of several micrometers, its strength is reduced to about 60 to 80% of that of an uncoated base material. This is because the cutting edge of the tool has a harder and more brittle coating than its base material, thereby reducing the toughness of the cutting edge. This decrease in toughness becomes more pronounced as the thickness of the coating layer increases. For this reason, stress is concentrated on the cutting edge part of a tool with a particularly sharp shape during cutting,
Defects such as chipping are likely to occur depending on the thickness of the coating. In order to prevent this, in a coated cemented carbide tool, so-called chamfering is performed on the cutting edge to reduce stress concentration on the cutting edge. The greater the chamfer, the greater the reduction in stress concentration and the higher the strength of the cutting edge, but the wear resistance is significantly reduced. This is because the sharpness of the cutting edge is lost by chamfering, the sharpness is deteriorated, and the friction with the work material is increased. Therefore, in order to increase the strength without deteriorating the wear resistance, it is necessary to perform chamfering of an appropriate size. Normally, the radius of curvature r shown in FIG.
Round honing of ~ 0.10mm or a shown in Fig. 2
Chamber honing with 0.08 mm to 0.20 mm and β of 10 to 20 mm is common. However, the present invention is not limited to the chamfering of those shapes, and is required in ordinary milling or the like if at least a portion of 0.01 mm or more and 0.12 mm or less on the rake face 6 side from the edge of the cutting edge is subjected to honing. It has been experimentally confirmed that abrasion resistance and strength can be obtained.

しかしながらピンミリングなどの極めて厳しい切削条
件下では、母材表面に数μmのセラミックスの薄膜を形
成した被覆超硬合金工具の場合は、このような切刃の面
取りのみでは切刃強度は不十分なため、切刃のチッピン
グが多発する。
However, under extremely severe cutting conditions such as pin milling, in the case of coated cemented carbide tools with a ceramic thin film of several μm formed on the base material surface, such chamfering of the cutting edge alone is not sufficient for the cutting edge strength. , Chipping of the cutting edge occurs frequently.

よって、切刃の面取りに加えて、さらに切刃強度を増
すための対策が必要となる。その対策として考え出され
たのが、本発明の特徴点である切刃の面取り部の被覆厚
さのみを小さくすることである。この対策により、ピン
ミリングなどにも耐え得る耐摩耗性および強度を有する
被覆超硬合金工具が得られる理由は、切削現象の考察な
どから次のように説明される。
Therefore, in addition to the chamfering of the cutting edge, a measure for further increasing the cutting edge strength is required. As a countermeasure, the only feature of the present invention is to reduce only the coating thickness of the chamfer of the cutting blade. The reason why a coated cemented carbide tool having abrasion resistance and strength that can withstand pin milling and the like can be obtained by this measure will be explained as follows from consideration of the cutting phenomenon.

通常切削加工においては、第4図に示すように切削中
はすくい面2が切粉12と接触するため切刃の面取り部3
は被削材11や切粉12と接触しない。すなわち切刃の面取
り部3は被覆超硬合金工具1が空転から被削材11に接触
するいわゆる食い付き時に被削材11と衝突し、このとき
に大きな衝撃力を受けるが、切削中は被削材11とは接触
しない。よって切刃の面取り部分3は他の部分に比べて
摩耗が少ない。しかしながらピンミリングに代表される
ミリング加工においては、工具の回転に対応して常時断
続的に切刃の食い付きが生じる。したがって被覆によっ
て強度の低下した切刃の面取り部分3は疲労破壊を生じ
やすく、さらにはチッピングや大欠損につながることに
なる。そこで本実施例においては、被覆の全体としての
厚さを減少させることなく、切刃の面取り部分3の被覆
のみをホーニング加工等によって調整加工し、その部分
の被覆膜厚の最小値δを他の部分の被覆膜厚60%以下
になるようにする。それよって被覆による切刃の面取り
部の靭性劣化が抑制され、耐摩耗性を維持しつつ強度低
下のない長寿命の被覆超硬合金工具を得ることができ
る。
In normal cutting, the rake face 2 comes into contact with the chips 12 during cutting as shown in FIG.
Does not come into contact with the work material 11 or the chips 12. That is, the chamfered portion 3 of the cutting blade collides with the work material 11 when the coated cemented carbide tool 1 comes into contact with the work material 11 from idling, and receives a large impact force at this time. It does not contact with the cutting material 11. Therefore, the chamfered portion 3 of the cutting blade has less wear than other portions. However, in milling represented by pin milling, the cutting edge bites constantly and intermittently in response to the rotation of the tool. Therefore, the chamfered portion 3 of the cutting edge, whose strength has been reduced by the coating, is liable to cause fatigue fracture, and furthermore, leads to chipping and large loss. Therefore, in this embodiment, only the coating of the chamfered portion 3 of the cutting edge is adjusted by honing or the like without reducing the overall thickness of the coating, and the minimum value δ 1 of the coating thickness of that portion is obtained. Is set to be 60% or less of the coating thickness of other portions. As a result, the deterioration of the toughness of the chamfered portion of the cutting edge due to the coating is suppressed, and a coated cemented carbide tool having a long life without deterioration in strength while maintaining wear resistance can be obtained.

なお、被覆膜としてはTiC,TiN,Al2O3からなる群より
選んだ1種以上のセラミックスの薄膜の1層以上が一般
的であるが、HfN,ZrNなどの膜を用いても効果に変わり
がないことは言うまでもない。この被覆膜の厚さは総計
で0.5μm以下では被覆の効果すなわち耐摩耗性向上の
効果が認められず、4μm以上では被覆による強度低下
のため、ピンミリング用などとしては不適当である。
Incidentally, TiC as the coating film, TiN, although more than one layer of a thin film of one or more ceramics selected from the group consisting of Al 2 O 3 is generally, HfN, even using a membrane such as ZrN effect Needless to say, there is no change. When the total thickness of the coating film is 0.5 μm or less, the effect of coating, that is, the effect of improving abrasion resistance is not recognized, and when the thickness is 4 μm or more, the strength is reduced by the coating, so that it is not suitable for pin milling.

また切刃の面取りが第1図のような丸ホーニングでは
なく、第2図のようなチャンファーホーニングの場合
は、特に面取り部の逃げ面側6部分の被覆膜厚の最小値
δが他の部分60%以下であれば同様の効果が認められ
ることか実験的に確認されている。
In the case where the chamfer of the cutting edge is not round honing as shown in FIG. 1 but chamfer honing as shown in FIG. 2, the minimum value δ 2 of the coating film thickness of the flank side 6 portion of the chamfered portion is particularly small. It has been experimentally confirmed that the same effect can be obtained if the other portion is 60% or less.

切刃の面取り部3の被覆膜厚の調整方法としては、セ
ラミックスの薄膜を被覆処理後にバレルなどで切刃の面
取り部3のみをホーニング加工するかあるいはブラシ砥
石によるホーニング加工が一般的である。
As a method of adjusting the coating film thickness of the chamfered portion 3 of the cutting blade, after coating the ceramic thin film, honing only the chamfered portion 3 of the cutting blade with a barrel or the like, or honing with a brush grindstone is common. .

なお本発明の効果はピンミリング用の工具に留まら
ず、同様の極めて厳しい環境にさらされる転削加工、た
とえばエッジミリングなどにも有効であることは言うま
でもない。
It is needless to say that the effect of the present invention is not limited to the tool for pin milling, but is also effective for the milling process exposed to the same extremely severe environment, for example, edge milling.

[発明の効果] 以上説明したように本発明によれば、切刃に所定の面
取りを施し、その面取り部分の被覆膜厚の最小値を他の
部分の被覆膜厚の60%以下にすることにより、耐摩耗性
を低下させることなく、繰返し作用する衝撃荷重にも耐
え得る高い強度が実現する。その結果ピンミリングなど
の苛酷な条件下における切削加工にも長寿命で使用可能
な被覆超硬合金工具を得ることができる。
[Effects of the Invention] As described above, according to the present invention, a predetermined bevel is applied to the cutting edge, and the minimum value of the coating thickness of the chamfered portion is set to 60% or less of the coating thickness of the other portions. By doing so, a high strength that can withstand repeated impact loads is realized without reducing the wear resistance. As a result, it is possible to obtain a coated cemented carbide tool that can be used for a long life even in cutting under severe conditions such as pin milling.

【図面の簡単な説明】[Brief description of the drawings]

第1図は本発明の一実施例における被覆超硬合金工具の
切刃近傍断面(第3図のA−A断面に相当)を示す図、
第2図は本発明の他の実施例における被覆超硬合金工具
の切刃近傍断面(第3図のA−A断面に相当)を示す図
である。 また第3図は被覆超硬合金工具の切刃近傍の外観の概略
を示す斜視図、第4図は被覆超硬合金工具で被削材を切
削中の切刃近傍の様子を模式的に示す説明図である。 図において、1は被覆超硬合金工具、2はすくい面、3
は切刃の面取り部、4は超硬合金母材、5は被覆層であ
る。 なお、各図において同一の番号は、同一または相当の要
素を示す。
FIG. 1 is a view showing a section (corresponding to an AA section in FIG. 3) near a cutting edge of a coated cemented carbide tool in one embodiment of the present invention;
FIG. 2 is a view showing a section (corresponding to an AA section in FIG. 3) of a coated cemented carbide tool according to another embodiment of the present invention in the vicinity of a cutting edge. FIG. 3 is a perspective view schematically showing the appearance of the vicinity of the cutting edge of the coated cemented carbide tool, and FIG. 4 is a schematic view showing the state of the vicinity of the cutting edge while cutting a work material with the coated cemented carbide tool. FIG. In the figure, 1 is a coated cemented carbide tool, 2 is a rake face, 3
Is a chamfered portion of the cutting blade, 4 is a cemented carbide base material, and 5 is a coating layer. In each drawing, the same numbers indicate the same or corresponding elements.

Claims (1)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】超硬合金を母材とし、その表面にセラミッ
クスの薄膜を総計で0.5μm以上4μm以下の膜厚で被
覆した被覆超硬合金工具において、 この被覆超硬合金工具の切刃部分には、刃先エッジから
すくい面側の0.01mm以上0.12mm以下の部分においてホー
ニングによる面取りが施されており、 かつこの面取り部分の被覆膜厚の最小値が他の部分の被
覆膜厚の60%以下であることを特徴とする 被覆超硬合金工具。
1. A coated cemented carbide tool in which a cemented carbide is used as a base material and a surface of which is coated with a ceramic thin film in a total thickness of 0.5 μm or more and 4 μm or less, a cutting edge portion of the coated cemented carbide tool The part of the rake face from the edge of the cutting edge that is 0.01 mm or more and 0.12 mm or less is chamfered by honing, and the minimum value of the coating thickness of this chamfered part is Coated cemented carbide tool characterized by not more than 60%.
JP3452289A 1989-02-14 1989-02-14 Coated cemented carbide tool Expired - Lifetime JP2664086B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3452289A JP2664086B2 (en) 1989-02-14 1989-02-14 Coated cemented carbide tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3452289A JP2664086B2 (en) 1989-02-14 1989-02-14 Coated cemented carbide tool

Publications (2)

Publication Number Publication Date
JPH02218522A JPH02218522A (en) 1990-08-31
JP2664086B2 true JP2664086B2 (en) 1997-10-15

Family

ID=12416604

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3452289A Expired - Lifetime JP2664086B2 (en) 1989-02-14 1989-02-14 Coated cemented carbide tool

Country Status (1)

Country Link
JP (1) JP2664086B2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE509201C2 (en) 1994-07-20 1998-12-14 Sandvik Ab Aluminum oxide coated tool
US6082936A (en) * 1996-06-12 2000-07-04 Sumitomo Electric Industries, Ltd. Coated hard metal tool
JP2001347403A (en) * 2000-06-09 2001-12-18 Sumitomo Electric Ind Ltd Coated cutting tool
JP2004074397A (en) * 2002-06-18 2004-03-11 Toyota Industries Corp Finishing radius end mill
JP2008142890A (en) * 2007-12-25 2008-06-26 Kyocera Corp Precision working method using cutting tool
JP2010274334A (en) * 2009-05-26 2010-12-09 Sumitomo Electric Hardmetal Corp Surface-coated cutting tool and method for manufacturing the same
JP2011093053A (en) * 2009-10-30 2011-05-12 Mitsubishi Materials Corp Cutting tool and method for manufacturing the same
JP5857395B2 (en) * 2010-10-18 2016-02-10 トヨタ自動車株式会社 Gravure coating equipment
EP3106250B1 (en) * 2014-03-25 2019-07-24 Kanefusa Kabushiki Kaisha Cutting tool

Also Published As

Publication number Publication date
JPH02218522A (en) 1990-08-31

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