JPH06114629A - Electrodeposition reamer tool - Google Patents
Electrodeposition reamer toolInfo
- Publication number
- JPH06114629A JPH06114629A JP4263911A JP26391192A JPH06114629A JP H06114629 A JPH06114629 A JP H06114629A JP 4263911 A JP4263911 A JP 4263911A JP 26391192 A JP26391192 A JP 26391192A JP H06114629 A JPH06114629 A JP H06114629A
- Authority
- JP
- Japan
- Prior art keywords
- electrodeposition
- reamer tool
- tool
- abrasive grains
- electrodeposition reamer
- 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
Landscapes
- Milling, Broaching, Filing, Reaming, And Others (AREA)
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、特に鋼材の高精度穴加
工に使用する電着リーマ工具に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electrodeposition reamer tool used especially for high-precision drilling of steel materials.
【０００２】[0002]
【従来の技術】従来、精密内径穴加工に使用する電着リ
ーマ工具として、例えば特開平２−１３９１１５号公報
に開示されているように、先端部に設けられる荒加工用
のテーパ形状部（もしくはＲ形状部）と、このテーパ形
状部（もしくはＲ形状部）に連設される仕上加工用のス
トレート形状部とよりなるワーク加工部を有する構造の
ものが知られている。2. Description of the Related Art Conventionally, as an electrodeposition reamer tool used for precision inner diameter hole machining, as disclosed in, for example, Japanese Patent Application Laid-Open No. 2-139115, a taper-shaped portion for rough machining (or There is known a structure having a work processing portion including an R-shaped portion) and a straight-shaped portion for finishing, which is continuously provided to the taper-shaped portion (or the R-shaped portion).
【０００３】図８はこの種従来の電着リーマ工具の一例
を示すものである。この従来の電着リーマ工具は、鋳鉄
材の高精度穴の仕上加工に用いられるものであって、図
示のように、先端部に設けられる荒加工用のテーパ形状
部１０１と、このテーパ形状部１０１に連設される仕上
加工用のストレート形状部１０２とよりなるワーク加工
部を備えている。ここで、このワーク加工部は工具の軸
方向に延びる切刃部１０３と隣接する切刃部１０３，１
０３間に形成される刃溝部１０４により構成されてい
る。また、切刃部１０３の表面にはダイヤモンドやＣＢ
Ｎ（Cubic BoronNitride ）などの超砥粒が電着され、
このうちストレート形状部１０２の砥粒にはツルーイン
グが施されている。また、この電着リーマ工具の中心部
には基端部からテーパ形状部１０１とストレート形状部
１０２との境界近くまで延設されるオイル供給穴１０５
が設けられ、このオイル供給穴１０５からテーパ形状部
１０１とストレート形状部１０２との境界部に位置する
刃溝部１０４の底面へ向けてクーラント穴１０６が形成
されている。ここで、刃溝部１０４の形状は図８（ｂ）
に示すように断面略コの字状とされ、前記クーラント穴
１０６はこの刃溝部１０４の底面の略中央部に開口する
よう設けられている。FIG. 8 shows an example of a conventional electrodeposition reamer tool of this type. This conventional electrodeposition reamer tool is used for finishing a high-precision hole in a cast iron material, and as shown in the drawing, a taper-shaped portion 101 for roughing provided at the tip and this taper-shaped portion. A work processing section is provided, which is composed of a straight-shaped section 102 for finishing processing, which is connected to 101. Here, the workpiece machining portion is a cutting edge portion 103, 1 adjacent to a cutting edge portion 103 extending in the axial direction of the tool.
It is comprised by the blade groove part 104 formed between 03. Moreover, diamond or CB is formed on the surface of the cutting edge portion 103.
Super abrasive grains such as N (Cubic BoronNitride) are electrodeposited,
Of these, the abrasive grains of the straight-shaped portion 102 are trued. Further, an oil supply hole 105 extending from the base end portion to the vicinity of the boundary between the tapered shape portion 101 and the straight shape portion 102 is provided at the center of the electrodeposition reamer tool.
A coolant hole 106 is formed from the oil supply hole 105 toward the bottom surface of the blade groove portion 104 located at the boundary between the tapered shape portion 101 and the straight shape portion 102. Here, the shape of the blade groove portion 104 is shown in FIG.
As shown in FIG. 3, the coolant hole 106 is provided so as to open at a substantially central portion of the bottom surface of the blade groove portion 104.
【０００４】前記構成からなる電着リーマ工具において
超砥粒の電着に際しては、超砥粒の分布をコントロール
するために、台金表面にマスキングを施した後その上か
らめっき層を形成するようにする。その場合、マスキン
グ部１０７は、図９に示すように刃溝部１０４の底面と
工具端面に形成されているセンタ穴１０８を覆う位置に
設定される。In the electrodeposition reamer tool having the above structure, when electrodepositing the superabrasive grains, in order to control the distribution of the superabrasive grains, the surface of the base metal is masked and then the plating layer is formed thereon. To In that case, the masking portion 107 is set to a position that covers the bottom surface of the blade groove portion 104 and the center hole 108 formed in the tool end surface as shown in FIG.
【０００５】一方、鋼材の内径穴加工を行うに際して
は、ボーリングバーやガンリーマなどの単刃もしくは多
刃の切刃を有する工具を用いたり、あるいは普通砥石に
よる内面研削加工を行うのが最も一般的である。また、
この出願に関連する技術として、超砥粒の表面を被膜で
被覆するようにしたものが例えば特開昭６３−１６９７
５号公報，特開昭６３−１３４１７３号公報などに開示
されている。On the other hand, when machining an inner diameter hole in a steel material, it is most common to use a tool having a single or multiple cutting edge such as a boring bar or a gun reamer, or to perform inner surface grinding with an ordinary grindstone. Is. Also,
As a technique related to this application, a technique in which the surface of superabrasive grains is coated with a film is disclosed in, for example, JP-A-63-1697.
No. 5, JP-A-63-134173, and the like.
【０００６】[0006]
【発明が解決しようとする課題】鋳鉄材の加工に用いら
れている図８に示されるような電着リーマ工具により鋼
材の加工を行った場合には、加工時に発生する切屑が砥
粒間あるいは刃溝内に堆積して加工面が悪化するため、
高精度の穴加工が行えないという問題点があった。この
ような問題点に対しては、粒径の大きな多結晶型のＣＢ
Ｎ砥粒を用いてチップポケットの拡大を図り切屑の排出
性を向上させることも考えられるが、単に多結晶型のＣ
ＢＮ砥粒を用いただけでは、砥粒表面へのめっきの付着
によって工具の加工性が悪化してしまうという問題点が
発生する。When a steel material is processed by an electrodeposition reamer tool as shown in FIG. 8 which is used for processing a cast iron material, the chips generated during the processing are produced between the abrasive grains or As it accumulates in the blade groove and the machined surface deteriorates,
There was a problem that high-precision drilling could not be performed. For such problems, a polycrystalline CB having a large grain size is used.
It is possible to increase the chip pocket by using N abrasive grains to improve the chip discharge property, but it is simply a polycrystalline C type.
If only BN abrasive grains are used, there arises a problem that workability of the tool is deteriorated due to adhesion of plating on the surface of the abrasive grains.
【０００７】一方、鋼材の高精度穴の仕上加工に用いら
れているボーリングバーやガンリーマなどの工具では、
十分なチップポケットを確保することは可能であるが、
材料欠陥が存在する場合に切刃が突如欠損するという不
具合が生じたり、摩耗の進行が速いために工具寿命が短
く加工時に作業者の関与頻度が多く、自動化，無人化を
進める上でのネックになるという問題点があった。ま
た、普通砥石を用いた内面研削加工では加工時間が長
く、部品の着脱を考慮するとやはり自動化，無人化が困
難であるという問題点があった。On the other hand, in tools such as boring bars and gun reamers used for finishing high-precision holes in steel materials,
It is possible to secure enough chip pockets,
If there is a material defect, the cutting edge suddenly breaks down, or the wear progresses quickly, resulting in a short tool life and frequent involvement of workers during machining, which is a bottleneck in promoting automation and unmanned operation. There was a problem that became. Further, there is a problem in that the internal grinding process using the ordinary grindstone takes a long processing time, and it is difficult to automate and unmanned in consideration of attachment / detachment of parts.
【０００８】なお、関連する技術として示した前記各公
報に開示のものは、砥粒を電着してなる工具の表面をチ
タン系のセラミック化合物や窒化硼素の被膜で覆うこと
によって、耐溶着性を向上させたり電着層の耐摩耗性を
向上させることを目的とするものであって、前述のよう
な問題点を解消するための手段について開示するもので
はない。It should be noted that the one disclosed in each of the above-mentioned publications, which is shown as a related technique, has a welding resistance by coating the surface of a tool formed by electrodeposition of abrasive grains with a coating film of a titanium-based ceramic compound or boron nitride. It is intended to improve the wear resistance of the electrodeposition layer and to improve the wear resistance of the electrodeposition layer, and does not disclose means for solving the above-mentioned problems.
【０００９】本発明は、前記問題点に鑑みてなされたも
のであって、高精度で高能率の加工が可能であり、特に
鋼材の穴加工に使用して好適な電着リーマ工具を提供す
ることを目的とするものである。The present invention has been made in view of the above problems, and provides an electrodeposition reamer tool that is capable of high-precision and high-efficiency machining and is particularly suitable for use in drilling holes in steel. That is the purpose.
【００１０】[0010]
【課題を解決するための手段】前記目的を達成するため
に、本発明に係る電着リーマ工具は、第１に、台金表面
に電着により固定され、表面に絶縁性被膜が形成されて
なる多結晶型のＣＢＮ砥粒を備えることを特徴とするも
のである。前記ＣＢＮ砥粒はＮｉ−Ｐ系めっきにより電
着し、このＮｉ−Ｐ系めっきを熱処理により硬化するの
がよい。In order to achieve the above object, the electrodeposition reamer tool according to the present invention is firstly fixed on the surface of the base metal by electrodeposition, and an insulating coating is formed on the surface. It is characterized by comprising the following polycrystalline CBN abrasive grains. It is preferable that the CBN abrasive grains are electrodeposited by Ni-P system plating, and the Ni-P system plating is cured by heat treatment.
【００１１】また、本発明に係る電着リーマ工具は、第
２に、先端部に設けられる荒加工部と、この荒加工部に
連設される仕上加工部とを有し、表面に超砥粒を電着し
てなる電着リーマ工具において、刃溝部を丸みをもった
形状に形成するとともに、超砥粒の電着部を切刃部の表
面およびその切刃部に連続する当該電着リーマ工具の端
面部分のみに設定することを特徴とするものである。Secondly, the electrodeposition reamer tool according to the present invention has a rough processing portion provided at the tip and a finishing processing portion connected to the rough processing portion, and has a superabrasive surface. In an electrodeposition reamer tool formed by electrodepositing grains, the electrode groove portion is formed in a rounded shape, and the electrodeposited portion of the superabrasive grains is continuously formed on the surface of the cutting edge portion and the cutting edge portion. It is characterized in that it is set only on the end face portion of the reamer tool.
【００１２】前記構成に加えて、クーラント穴を、荒加
工部および仕上加工部の双方の刃溝部の底面であって当
該電着リーマ工具の反回転方向寄りの位置に開口するよ
う設けるのが好適である。In addition to the above configuration, it is preferable that the coolant hole is provided so as to be opened at the bottom surface of the blade groove portion of both the rough machining portion and the finish machining portion, which is closer to the counter rotation direction of the electrodeposition reamer tool. Is.
【００１３】[0013]
【作用】前記第１の特徴を有する電着リーマ工具におい
ては、粒径の大きな多結晶型のＣＢＮ砥粒が用いられて
いることによって、チップポケットの拡大が図れ切屑の
排出性を向上させることができる。その場合、ＣＢＮ砥
粒の表面が絶縁性被膜により覆われていることによっ
て、電着時に砥粒表面へのめっきの付着を防げて加工性
の悪化が回避される。In the electrodeposition reamer tool having the first feature, the polycrystalline CBN abrasive grains having a large grain size are used, so that the chip pocket can be enlarged and the chip discharging property can be improved. You can In that case, since the surface of the CBN abrasive grains is covered with an insulating coating, it is possible to prevent the plating from adhering to the surface of the abrasive grains during electrodeposition and prevent the deterioration of workability.
【００１４】また、ＣＢＮ砥粒をＮｉ−Ｐ系めっきを用
いて台金表面に電着し、このＮｉ−Ｐ系めっきを熱処理
により硬化させると、チップポケットの拡大を図るため
にめっき層の厚みを小さくしても砥粒の固定力を十分に
確保することができる。また、前記第２の特徴を有する
電着リーマ工具においては、刃溝部が丸みをもった形状
とされているので、この刃溝部に堆積した切屑を効果的
に排出することができ、また、超砥粒の電着部が切刃部
の表面および該切刃部に連続する当該電着リーマ工具の
端面部分のみに設定されていることによって、超砥粒の
十分な保持力を確保しつつ超砥粒が不要な部分に付着し
ていることによる切屑の引っ掛かりを防ぐことが可能と
なる。When CBN abrasive grains are electrodeposited on the surface of the base metal using Ni-P system plating and the Ni-P system plating is cured by heat treatment, the thickness of the plating layer is increased in order to enlarge the chip pocket. Even if it is made small, the fixing force of the abrasive grains can be sufficiently secured. Further, in the electrodeposition reamer tool having the second feature, since the blade groove portion has a rounded shape, the chips accumulated in the blade groove portion can be effectively discharged, and The electrodeposition portion of the abrasive grains is set only on the surface of the cutting edge portion and the end face portion of the electrodeposition reamer tool that is continuous with the cutting edge portion, so that a sufficient holding force for the superabrasive grains is ensured It is possible to prevent chips from being caught due to the abrasive grains adhering to unnecessary portions.
【００１５】さらに、前記構成に加えて、クーラント穴
を、荒加工部および仕上加工部の双方の刃溝部の底面で
あって当該電着リーマ工具の反回転方向寄りの位置に開
口するよう設けると、切屑の堆積し易い箇所に向けてク
ーラント穴を介して液体が噴出されるため切屑の排出が
より効果的に行え、加工能率をより向上させることが可
能となる。Further, in addition to the above structure, a coolant hole may be provided so as to be opened at a position on the bottom surface of the blade groove portion of both the rough machining portion and the finish machining portion, which is closer to the counter rotation direction of the electrodeposition reamer tool. Since the liquid is ejected through the coolant hole toward the portion where the chips are likely to accumulate, the chips can be discharged more effectively and the machining efficiency can be further improved.
【００１６】[0016]
【実施例】次に、本発明による電着リーマ工具の具体的
実施例につき、図面を参照しつつ説明する。図１には、
本発明の第一実施例に係る電着リーマ工具の部分断面正
面図が示されている。EXAMPLES Specific examples of the electrodeposition reamer tool according to the present invention will be described with reference to the drawings. In Figure 1,
The partial cross section front view of the electrodeposition reamer tool which concerns on the 1st Example of this invention is shown.
【００１７】本実施例の電着リーマ工具は、先端部に設
けられる荒加工用のテーパ形状部１と、このテーパ形状
部１の基端部側に連設される仕上加工用のストレート形
状部２とよりなるワーク加工部を備えている。ここで、
このワーク加工部は、工具の先端に向かうにしたがって
左方に向けてねじれた形状の複数の切刃部３と、互いに
隣接する切刃部３，３間に形成される刃溝部４を有する
ものとされている。The electrodeposition reamer tool of the present embodiment is provided with a taper-shaped portion 1 for roughing provided at the tip and a straight-shaped portion for finishing, which is continuously provided on the base end side of the taper-shaped portion 1. 2 is provided with a work processing part. here,
This work processing part has a plurality of cutting edge parts 3 that are twisted leftward as they approach the tip of the tool, and a blade groove part 4 formed between adjacent cutting edge parts 3 and 3. It is said that.
【００１８】前記電着リーマ工具の中心部には、基端部
からテーパ形状部１とストレート形状部２との境界近く
まで延設されるオイル供給穴５が設けられ、このオイル
供給穴５には、先端側へ向けて斜めに穿設されるととも
に先端が刃溝部４の底面に開口する複数のクーラント穴
６が連通されている。ここで、これらクーラント穴６の
刃溝部４の底面への開口位置は、テーパ形状部１とスト
レート形状部２との境界部近傍およびストレート形状部
２の長手方向の略中央部にそれぞれ設定されている。ま
た、前記電着リーマ工具においては、切刃部３の表面に
図２，図３に示すようにＮｉ−Ｐ系めっき７を用いてＣ
ＢＮ砥粒８が電着される。その際、ＣＢＮ砥粒８として
は極力大きな粒径とするため例えば粒度＃３０／４０程
度の多結晶タイプのもの（粒径８００μｍ程度）が選定
され、また、電着前にそのＣＢＮ砥粒８の表面に絶縁性
被膜９がコーティングされる。この絶縁性被膜９は、電
着時にＣＢＮ砥粒８表面へのめっきの付着を防止するた
めに設けられるものであって、ＣＢＮ，ダイヤモンド，
Ａｌ2 Ｏ 3，ＳｉＯ2 などのコーティング材をＰＶＤ
（物理蒸着）法などを用いて厚み２〜３μｍ程度にコー
ティングすることにより形成される。また、Ｎｉ−Ｐ系
めっき７はそのめっき厚みを出来るだけ薄く（例えば３
００μｍ程度）することによりチップポケットの拡大が
図られ、このＮｉ−Ｐ系めっき７を電着後に例えば３０
０℃×２時間程度の熱処理にて硬化させることによりＣ
ＢＮ砥粒８の固定力の確保がなされる。At the center of the electrodeposition reamer tool, there is provided an oil supply hole 5 extending from the base end to near the boundary between the tapered shape portion 1 and the straight shape portion 2. Has a plurality of coolant holes 6 which are formed obliquely toward the tip side and whose tip opens on the bottom surface of the blade groove portion 4. Here, the opening positions of these coolant holes 6 to the bottom surface of the blade groove portion 4 are set in the vicinity of the boundary between the tapered shape portion 1 and the straight shape portion 2 and in the substantially central portion of the straight shape portion 2 in the longitudinal direction, respectively. There is. Further, in the electrodeposition reamer tool, the surface of the cutting edge portion 3 is coated with Ni—P based plating 7 as shown in FIGS.
The BN abrasive grains 8 are electrodeposited. At this time, as the CBN abrasive grains 8 have a grain size as large as possible, for example, a polycrystalline type of grain size # 30/40 (grain size of about 800 μm) is selected, and the CBN abrasive grains 8 before electrodeposition An insulating film 9 is coated on the surface of the. The insulating coating 9 is provided to prevent the plating from adhering to the surface of the CBN abrasive grains 8 during electrodeposition, and is made of CBN, diamond,
PVD coating materials such as Al 2 O 3 and SiO 2
It is formed by coating to a thickness of about 2 to 3 μm using a (physical vapor deposition) method or the like. In addition, the Ni-P system plating 7 is as thin as possible (for example, 3
The diameter of the chip pocket can be increased by about 100 μm).
C by curing by heat treatment at 0 ° C for 2 hours
The fixing force of the BN abrasive grains 8 is secured.
【００１９】また、電着・熱処理後において、ストレー
ト形状部２のＣＢＮ砥粒８にはツルーイングが施され、
それによって砥粒先端が面一に揃えられる。なお、図２
において二点鎖線はツルーイングを施した部分を示し、
図３においてｓはツルーイング量を示す。本実施例の電
着リーマ工具によれば、切刃部３の表面に電着するＣＢ
Ｎ砥粒８として粒径の大きな多結晶タイプのものが用い
られるので、チップポケットの拡大を図ることができ、
それによって切屑の排出性を向上させることができる。
また、ＣＢＮ砥粒８をＮｉ−Ｐ系めっき７によって電着
し、このＮｉ−Ｐ系めっき７を熱処理により硬化させる
ようにしているので、チップポケットの拡大を図るため
にめっき層の厚みを小さくしてもＣＢＮ砥粒８の固定力
を十分に確保することが可能となる。また、切刃部３の
表面に電着されるＣＢＮ砥粒８は、その表面が絶縁性被
膜９により覆われているので、電着時に砥粒表面にめっ
きが付着することがない。したがって、加工性の悪化を
防止することができる。After electrodeposition and heat treatment, the CBN abrasive grains 8 of the straight shaped portion 2 are trued,
Thereby, the tips of the abrasive grains are flush with each other. Note that FIG.
In, the chain double-dashed line shows the truing part,
In FIG. 3, s indicates the truing amount. According to the electrodeposition reamer tool of this embodiment, CB electrodeposited on the surface of the cutting edge portion 3
Since a polycrystalline type having a large grain size is used as the N abrasive grain 8, the chip pocket can be enlarged,
As a result, the chip discharging property can be improved.
Further, since the CBN abrasive grains 8 are electrodeposited by the Ni-P system plating 7 and the Ni-P system plating 7 is hardened by heat treatment, the thickness of the plating layer is made small in order to enlarge the chip pocket. Even then, it becomes possible to sufficiently secure the fixing force of the CBN abrasive grains 8. Further, since the surface of the CBN abrasive grains 8 electrodeposited on the surface of the cutting edge portion 3 is covered with the insulating coating 9, plating does not adhere to the surface of the abrasive grains during electrodeposition. Therefore, deterioration of workability can be prevented.
【００２０】本実施例の電着リーマ工具とボーリングバ
ー等の従来工具を使用して同じ被削材（鋼材）を加工す
ることによりそれぞれの工具寿命を測定したところ、従
来工具では１０ｍであったのに対し本実施例のものでは
２００ｍであり、本実施例のものにおいて工具寿命が格
段に向上することが確認された。図４には本発明の第二
実施例に係る電着リーマ工具の部分断面図が示されてお
り、図５には本実施例の電着リーマ工具の部分拡大正面
図が示されている。When the same work material (steel material) was machined using the electrodeposition reamer tool of this embodiment and a conventional tool such as a boring bar, the respective tool lives were measured and found to be 10 m for the conventional tool. On the other hand, in the case of this example, the length was 200 m, and it was confirmed that the tool life was remarkably improved in the case of this example. FIG. 4 is a partial sectional view of an electrodeposition reamer tool according to the second embodiment of the present invention, and FIG. 5 is a partially enlarged front view of the electrodeposition reamer tool of this embodiment.
【００２１】本実施例において、先の実施例と共通する
構成および作用については図に同一符号を付すに留めて
その詳細な説明を省略し、次に、本実施例に特有の点に
ついてのみ説明する。本実施例の電着リーマ工具におい
ては、刃溝部４’の断面形状が、底面の角部に丸みをも
った略Ｕ字形状に形成され、オイル供給穴５に連通する
クーラント穴６’が、オイル供給穴５の直径方向に対し
工具回転方向（図中矢印で示す。）と逆方向にθだけ傾
斜する位置に穿設されている。また、前記クーラント穴
６’の刃溝部４’底面への開口位置は、工具回転方向と
反対寄りの隅部に設定されている。また、工具表面にＣ
ＢＮ砥粒を電着するに際しては、切刃部３の表面に砥粒
を適正に分布させるため、台金表面にマスキングを施し
た後その上からめっき層を形成するようにする。その場
合、マスキング部１０は、図６に示すように断面略Ｕ字
状の刃溝部４’の全表面と切刃部３に連続する工具端面
の三角形部分を除く工具の全端面部分とに設定される。In this embodiment, configurations and operations common to those of the previous embodiment are given the same reference numerals in the drawings and detailed description thereof will be omitted. Next, only points unique to this embodiment will be described. To do. In the electrodeposition reamer tool of the present embodiment, the cross-sectional shape of the blade groove portion 4'is formed into a substantially U shape having rounded corners on the bottom surface, and the coolant hole 6'communicating with the oil supply hole 5 is It is provided at a position inclined by θ in the direction opposite to the tool rotation direction (shown by the arrow in the figure) with respect to the diameter direction of the oil supply hole 5. Further, the opening position of the coolant hole 6'to the bottom surface of the blade groove portion 4'is set to a corner portion opposite to the tool rotating direction. Also, C on the tool surface
When electrodepositing the BN abrasive grains, in order to properly distribute the abrasive grains on the surface of the cutting edge portion 3, the surface of the base metal is masked and then the plating layer is formed thereon. In that case, as shown in FIG. 6, the masking portion 10 is set on the entire surface of the blade groove portion 4 ′ having a substantially U-shaped cross section and the entire end surface portion of the tool except the triangular portion of the tool end surface continuous with the cutting edge portion 3. To be done.
【００２２】本実施例の電着リーマ工具によれば、刃溝
部４’が丸みをもった形状とされており、まためっき層
を形成する際のマスキング部１０が刃溝部４’の全表面
と切刃部３に連続する工具端面の三角形部分を除く工具
の全端面部分に設定されているので、ＣＢＮ砥粒が刃溝
部４’の不要部分に付着するのを避けることができ、そ
れによって切屑の引っ掛かりを防止することができ、刃
溝部４’に堆積した切屑を効果的に排出することができ
る。また、めっき層が切刃部３に連続する工具端面にも
形成されていることにより切刃部３表面のＣＢＮ砥粒の
保持力を高めることができる。According to the electrodeposition reamer tool of this embodiment, the blade groove portion 4'has a rounded shape, and the masking portion 10 for forming the plating layer forms the entire surface of the blade groove portion 4 '. Since it is set to the entire end face part of the tool except the triangular part of the end face of the tool which is continuous with the cutting edge part 3, it is possible to avoid the CBN abrasive grains from adhering to the unnecessary part of the edge groove part 4 ′, and thereby the chips. Can be prevented, and the chips accumulated in the blade groove portion 4'can be effectively discharged. Further, since the plating layer is also formed on the tool end surface that is continuous with the cutting edge portion 3, the holding force of the CBN abrasive grains on the surface of the cutting edge portion 3 can be increased.
【００２３】また、クーラント穴６’が切屑の堆積し易
い工具回転方向と反対寄りの刃溝部４’の底面の隅部に
設けられているので、このクーラント穴６’から噴出さ
れるオイルによって切屑をより効果的に排出することが
できる。したがって、比較的大きくて長い切屑生成を伴
う鋼材の高精度穴加工に好適な電着リーマ工具を得るこ
とができる。Further, since the coolant hole 6'is provided at the corner portion of the bottom surface of the blade groove portion 4'opposite to the tool rotating direction where chips are easily accumulated, the chips are generated by the oil jetted from the coolant hole 6 '. Can be discharged more effectively. Therefore, it is possible to obtain an electrodeposition reamer tool suitable for high-precision drilling of a steel material with relatively large and long chip formation.
【００２４】図７に本実施例の電着リーマ工具と図８，
図９に示す従来の電着リーマ工具とにより同一の被削材
を加工した結果得られた加工面粗さおよび加工能率の比
較データが示されている。図７（ａ）に示す加工面粗さ
試験では、粒度＃３０のＣＢＮ砥粒を電着してなる直径
２２ｍｍの工具により鋼材の被削材ＳＣＳｉＭｎ２Ｈ
（ＨＢ２５０）の加工を行った。そのときの工具の周速
は２０ｍ／ｍｉｎ，送りは０．２ｍｍ／ｒｅｖであり、
被削材の取代は５０μｍである。一方、図７（ｂ）に示
す加工能率試験では、前記面粗さ試験と同じ工具により
鋳鉄材の被削材ＦＣＤ４５（ＨＢ２００）の加工を行っ
た。そのときの工具の周速は２０ｍ／ｍｉｎであり、被
削材の取代は５０μｍである。なお、図７（ｂ）におい
て、ｆは工具一回転当たりの軸方向の送り量，Ｖは工具
の周速をそれぞれ示す。これらのグラフにて明らかなよ
うに、本実施例の工具を用いると鋼材の高精度穴加工が
実現でき、また鋳鉄材に用いても高能率加工が可能とな
る。FIG. 7 shows the electrodeposition reamer tool of this embodiment and FIG.
FIG. 9 shows comparative data of machined surface roughness and machining efficiency obtained as a result of machining the same work material with the conventional electrodeposition reamer tool. In the machined surface roughness test shown in FIG. 7 (a), a steel work material SCSiMn2H was prepared using a tool with a diameter of 22 mm formed by electrodeposition of CBN abrasive grains of grain size # 30.
(HB250) was processed. At that time, the peripheral speed of the tool was 20 m / min, the feed was 0.2 mm / rev,
The machining allowance is 50 μm. On the other hand, in the machining efficiency test shown in FIG. 7B, the work material FCD45 (HB200), which is a cast iron material, was machined using the same tool as in the surface roughness test. The peripheral speed of the tool at that time is 20 m / min, and the stock removal of the work material is 50 μm. In FIG. 7B, f indicates the feed amount in the axial direction per one rotation of the tool, and V indicates the peripheral speed of the tool. As is clear from these graphs, the tool of the present embodiment can realize high-precision drilling of steel material and high-efficiency drilling even when used for cast iron material.
【００２５】なお、本実施例の電着リーマ工具を鋳鉄材
の加工に使用する場合には、電着する超砥粒として前記
ＣＢＮ以外にダイヤモンドを用いることができる。When the electrodeposition reamer tool of this embodiment is used for processing a cast iron material, diamond can be used as the superabrasive grains for electrodeposition, in addition to the CBN.
【００２６】[0026]
【発明の効果】以上のように本発明の電着リーマ工具に
よれば、第１に、表面に絶縁性被膜が形成された多結晶
型のＣＢＮ砥粒を備えているので、砥粒表面へのめっき
の付着を防ぐことができるとともにチップポケットの拡
大を図ることができ、切屑の排出性を向上させることが
できる。したがって、鋼材の高精度穴加工を実現するこ
とができる。As described above, according to the electrodeposition reamer tool of the present invention, firstly, since it is provided with the polycrystalline CBN abrasive grains having the insulating coating formed on the surface thereof, It is possible to prevent the plating from adhering to the chip pocket, to enlarge the chip pocket, and to improve the chip discharge property. Therefore, it is possible to realize high-precision drilling of a steel material.
【００２７】また、ＣＢＮ砥粒をＮｉ−Ｐ系めっきを用
いて台金表面に電着し、このＮｉ−Ｐ系めっきを熱処理
により硬化させるようにすると、チップポケットの拡大
を図るためにめっき層の厚みを小さくしてもＣＢＮ砥粒
の固定力を十分に確保することができる。前記電着リー
マ工具は、第２に、刃溝部が丸みをもった形状に形成す
るとともに、超砥粒の電着部を切刃部の表面および該切
刃部に連続する当該電着リーマ工具の端面部分のみに設
定するようにしているので、刃溝部に堆積した切屑を効
果的に排出することができ、また超砥粒が不要な部分に
付着していることによる切屑の引っ掛かりを防ぐことが
でき、しかも超砥粒の保持力を十分に確保することがで
きる。したがって、比較的大きくて長い切屑の生成を伴
う鋼材の高精度穴加工を実現することができ、また鋳鉄
材に対しても高能率加工を実現することができる。If CBN abrasive grains are electrodeposited on the surface of the base metal using Ni-P system plating and the Ni-P system plating is cured by heat treatment, the plating layer is expanded in order to enlarge the chip pocket. The fixing force of the CBN abrasive grains can be sufficiently secured even if the thickness of the CBN is reduced. Secondly, in the electrodeposition reamer tool, the blade groove portion is formed in a rounded shape, and the electrodeposited portion of superabrasive grains is continuous with the surface of the cutting blade portion and the cutting blade portion. Since it is set only on the end face part, the chips accumulated in the blade groove can be effectively discharged, and the chips are not caught due to the superabrasive particles adhering to unnecessary parts. It is possible to secure a sufficient holding force for the superabrasive grains. Therefore, it is possible to realize highly accurate drilling of a steel material accompanied by the generation of relatively large and long chips, and also it is possible to realize highly efficient drilling of a cast iron material.
【００２８】さらに、前記構成に加えて、クーラント穴
を、荒加工部および仕上加工部の双方の刃溝部の底面で
あって当該電着リーマ工具の反回転方向寄りの位置に開
口するよう設けると、切屑の堆積部に向けてクーラント
穴を介して液体が噴出されるため切屑の排出がより効果
的に行え、加工能率をより向上させることが可能とな
る。Further, in addition to the above-mentioned structure, a coolant hole may be provided so as to be opened at a position on the bottom surface of the blade groove portion of both the rough machining portion and the finishing machining portion, which is closer to the counter rotation direction of the electrodeposition reamer tool. Since the liquid is jetted toward the chip accumulation portion through the coolant hole, the chips can be discharged more effectively and the machining efficiency can be further improved.
【図１】本発明の第一実施例に係る電着リーマ工具の部
分断面正面図FIG. 1 is a partial sectional front view of an electrodeposition reamer tool according to a first embodiment of the present invention.
【図２】本発明の第一実施例に係る電着リーマ工具の部
分拡大断面図FIG. 2 is a partially enlarged sectional view of an electrodeposition reamer tool according to the first embodiment of the present invention.
【図３】図４のＡ部拡大図FIG. 3 is an enlarged view of part A of FIG.
【図４】本発明の第二実施例に係る電着リーマ工具の断
面図FIG. 4 is a sectional view of an electrodeposition reamer tool according to a second embodiment of the present invention.
【図５】本発明の第二実施例に係る電着リーマ工具の部
分拡大正面図FIG. 5 is a partially enlarged front view of an electrodeposition reamer tool according to a second embodiment of the present invention.
【図６】本発明の第二実施例に係る電着リーマ工具にお
けるマスキング部を示す説明図FIG. 6 is an explanatory view showing a masking portion in the electrodeposition reamer tool according to the second embodiment of the present invention.
【図７】本発明の第二実施例に係る電着リーマ工具によ
る加工面粗さ試験および加工能率試験の結果を従来工具
との対比で示すグラフFIG. 7 is a graph showing the results of a machined surface roughness test and a machining efficiency test with the electrodeposition reamer tool according to the second embodiment of the present invention, in comparison with a conventional tool.
【図８】従来の電着リーマ工具の部分断面正面図および
端面図FIG. 8 is a partial sectional front view and end view of a conventional electrodeposition reamer tool.
【図９】従来の電着リーマ工具におけるマスキング部を
示す説明図FIG. 9 is an explanatory view showing a masking portion in a conventional electrodeposition reamer tool.
１ テーパ形状部 ２ ストレート形状部 ３ 切刃部 ４，４’ 刃溝部 ５ オイル供給穴 ６，６’ クーラント穴 ７ Ｎｉ−Ｐ系めっき ８ ＣＢＮ砥粒 ９ 絶縁性被膜 １０ マスキング部 1 taper shape part 2 straight shape part 3 cutting edge part 4, 4'blade groove part 5 oil supply hole 6, 6'coolant hole 7 Ni-P system plating 8 CBN abrasive grain 9 insulating film 10 masking part
Claims (4)
絶縁性被膜を形成してなる多結晶型のＣＢＮ砥粒を備え
ることを特徴とする電着リーマ工具。1. An electrodeposition reamer tool characterized by comprising polycrystalline CBN abrasive grains fixed to the surface of a base metal by electrodeposition and having an insulating coating formed on the surface.
り電着され、このＮｉ−Ｐ系めっきが熱処理により硬化
されることを特徴とする請求項１に記載の電着リーマ工
具。2. The electrodeposition reamer tool according to claim 1, wherein the CBN abrasive grains are electrodeposited by Ni—P system plating, and the Ni—P system plating is hardened by heat treatment.
加工部に連設される仕上加工部とを有し、表面に超砥粒
を電着してなる電着リーマ工具において、刃溝部を丸み
をもった形状に形成するとともに、前記超砥粒の電着部
を切刃部の表面およびその切刃部に連続する当該電着リ
ーマ工具の端面部分のみに設定することを特徴とする電
着リーマ工具。3. An electrodeposition reamer tool having a rough processing portion provided at a tip portion and a finishing processing portion continuously provided to the rough processing portion, wherein the surface is electro-deposited with superabrasive grains. While forming the groove portion in a rounded shape, the electrodeposition portion of the superabrasive grains is set only on the surface of the cutting edge portion and the end face portion of the electrodeposition reamer tool continuous to the cutting edge portion, An electrodeposition reamer tool to do.
記仕上加工部の双方の刃溝部の底面であって当該電着リ
ーマ工具の反回転方向寄りの位置に開口するよう設けら
れることを特徴とする請求項３に記載の電着リーマ工
具。4. A coolant hole is provided so as to open at a bottom surface of the blade groove portions of both the rough machining portion and the finish machining portion, and at a position closer to the counter rotation direction of the electrodeposition reamer tool. The electrodeposition reamer tool according to claim 3.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26391192A JP3236083B2 (en) | 1992-10-01 | 1992-10-01 | Electroplated reamer tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP26391192A JP3236083B2 (en) | 1992-10-01 | 1992-10-01 | Electroplated reamer tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06114629A true JPH06114629A (en) | 1994-04-26 |
| JP3236083B2 JP3236083B2 (en) | 2001-12-04 |
Family
ID=17395981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP26391192A Expired - Lifetime JP3236083B2 (en) | 1992-10-01 | 1992-10-01 | Electroplated reamer tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3236083B2 (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007054941A (en) * | 2005-07-25 | 2007-03-08 | Mitsubishi Materials Kobe Tools Corp | Tool for fine machining and fine machining method for brittle material |
| WO2007039949A1 (en) * | 2005-10-03 | 2007-04-12 | Mitsubishi Materials Corporation | Boring tool and method of boring pilot hole |
| JP2007098517A (en) * | 2005-10-05 | 2007-04-19 | Mitsubishi Materials Corp | Prepared hole machining method and boring tool |
| JP2007098497A (en) * | 2005-10-03 | 2007-04-19 | Mitsubishi Materials Corp | Boring tool |
| WO2015098195A1 (en) * | 2013-12-25 | 2015-07-02 | 三菱重工業株式会社 | Grinding wheel tool |
| WO2016093186A1 (en) * | 2014-12-12 | 2016-06-16 | 三菱重工工作機械株式会社 | Grinding tool and manufacturing method therefor |
| WO2019194317A3 (en) * | 2018-04-05 | 2019-11-28 | 学校法人静岡理工科大学 | Processing device, and processing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6420221U (en) * | 1987-07-23 | 1989-02-01 | ||
| JPH0247121U (en) * | 1988-09-27 | 1990-03-30 | ||
| JPH04223820A (en) * | 1990-12-25 | 1992-08-13 | Toyota Motor Corp | Abrasive grain reamer |
-
1992
- 1992-10-01 JP JP26391192A patent/JP3236083B2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6420221U (en) * | 1987-07-23 | 1989-02-01 | ||
| JPH0247121U (en) * | 1988-09-27 | 1990-03-30 | ||
| JPH04223820A (en) * | 1990-12-25 | 1992-08-13 | Toyota Motor Corp | Abrasive grain reamer |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007054941A (en) * | 2005-07-25 | 2007-03-08 | Mitsubishi Materials Kobe Tools Corp | Tool for fine machining and fine machining method for brittle material |
| US8272815B2 (en) | 2005-10-03 | 2012-09-25 | Mitsubishi Materials Corporation | Boring tool and method of boring pilot hole |
| JP2007098497A (en) * | 2005-10-03 | 2007-04-19 | Mitsubishi Materials Corp | Boring tool |
| EP1932609A1 (en) * | 2005-10-03 | 2008-06-18 | Mitsubishi Materials Corporation | Boring tool and method of boring pilot hole |
| EP1932609A4 (en) * | 2005-10-03 | 2011-05-04 | Mitsubishi Materials Corp | Boring tool and method of boring pilot hole |
| WO2007039949A1 (en) * | 2005-10-03 | 2007-04-12 | Mitsubishi Materials Corporation | Boring tool and method of boring pilot hole |
| JP2007098517A (en) * | 2005-10-05 | 2007-04-19 | Mitsubishi Materials Corp | Prepared hole machining method and boring tool |
| WO2015098195A1 (en) * | 2013-12-25 | 2015-07-02 | 三菱重工業株式会社 | Grinding wheel tool |
| WO2016093186A1 (en) * | 2014-12-12 | 2016-06-16 | 三菱重工工作機械株式会社 | Grinding tool and manufacturing method therefor |
| JPWO2016093186A1 (en) * | 2014-12-12 | 2017-11-30 | 三菱重工工作機械株式会社 | Grinding wheel tool and manufacturing method thereof |
| US10543583B2 (en) | 2014-12-12 | 2020-01-28 | Mitsubishi Heavy Industries Machine Tool Co., Ltd. | Grinding tool and manufacturing method therefor |
| WO2019194317A3 (en) * | 2018-04-05 | 2019-11-28 | 学校法人静岡理工科大学 | Processing device, and processing method |
| JPWO2019194317A1 (en) * | 2018-04-05 | 2021-04-01 | 学校法人静岡理工科大学 | Processing equipment and processing method |
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| Publication number | Publication date |
|---|---|
| JP3236083B2 (en) | 2001-12-04 |
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