JPH0750099Y2 - Rotary cutting tool - Google Patents
Rotary cutting toolInfo
- Publication number
- JPH0750099Y2 JPH0750099Y2 JP1988116667U JP11666788U JPH0750099Y2 JP H0750099 Y2 JPH0750099 Y2 JP H0750099Y2 JP 1988116667 U JP1988116667 U JP 1988116667U JP 11666788 U JP11666788 U JP 11666788U JP H0750099 Y2 JPH0750099 Y2 JP H0750099Y2
- Authority
- JP
- Japan
- Prior art keywords
- outer peripheral
- cutting edge
- blade
- cutting
- cutting tool
- 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
Links
Landscapes
- Drilling Tools (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Description
【考案の詳細な説明】 （産業上の利用分野） この考案は、例えば穴加工に用いられるドリルやリーマ
或いは溝加工に用いられるエンドミル等の回転切削工具
に関する。DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rotary cutting tool such as a drill or reamer used for drilling or an end mill used for drilling.
（従来技術） 従来、この種のドリルやリーマ或いはエンドミル等の回
転切削工具は超硬合金から構成されたものが主流である
が、時代の要求により硬い被加工部材を加工する頻度が
多々有り、この場合には前記の切削工具では対摩耗性等
からその要求に対して満足に対応することができなかっ
た。そこで、特開昭第59-187421号に示されたように、
切削工具の最も摩耗し易い刃先の食付き部に焼結ダイヤ
モンドからなる刃先部を形成した構成が提案されてい
る。(Prior Art) Conventionally, rotary cutting tools such as drills, reamers, and end mills are mainly made of cemented carbide, but due to the demands of the times, hard work members are often processed, In this case, the above-mentioned cutting tool could not satisfactorily meet the requirement due to wear resistance and the like. Therefore, as shown in JP-A-59-187421,
A configuration has been proposed in which a cutting edge portion made of sintered diamond is formed on a biting portion of the cutting edge of a cutting tool that is most likely to be worn.
（考案が解決しようとする課題） しかしながらこのような従来技術の構成は食付き部のみ
に焼結ダイヤモンドからなる刃先部を形成したものであ
るため、継続使用により食付き部以外の部分の刃部が摩
耗すると、加工時にこのような摩耗した刃部と非切削物
の加工穴との間に隙間が生じ、これが切削時の振動の一
要因となって刃部に不規則な応力が作用し、チッピング
を誘発していた。このためさらに刃部が摩耗して工具寿
命が短くなる欠点を有していた。(Problems to be solved by the invention) However, since such a configuration of the prior art is formed by forming the cutting edge portion made of sintered diamond only in the bite portion, the blade portion other than the bite portion is continuously used. When is worn, a gap is generated between the worn blade portion and the processing hole of the non-cutting object at the time of machining, which becomes a factor of vibration during cutting and irregular stress acts on the blade portion, It was triggering chipping. Therefore, there is a drawback that the blade portion is further worn and the tool life is shortened.
（課題を解決するための手段） 上記従来技術の欠点に鑑み、本願考案の回転切削工具
は、穴加工あるいは溝加工等に用いる回転切削工具であ
って、切削回転方向側及びその反対方向側に外周切刃部
及び外周パット部をそれぞれ備えた刃部を有し、前記外
周切刃部には当該刃部先端の食付き部を起端とする適宜
範囲において焼結ダイヤモンドからなる第１の刃先部を
設け、一方前記外周パット部には前記刃部先端から所定
の間隔をおいた位置を基端とする適宜範囲において焼結
ダイヤモンドからなる第２の刃先部を設けたことを特徴
とする。(Means for Solving the Problem) In view of the above-mentioned drawbacks of the prior art, the rotary cutting tool of the present invention is a rotary cutting tool used for hole machining, groove machining, or the like, and is provided on the cutting rotation direction side and the opposite direction side. A first cutting edge made of sintered diamond in an appropriate range having an edge portion provided with an outer peripheral cutting edge portion and an outer peripheral pad portion respectively, and the outer peripheral cutting edge portion starting from the bite portion of the blade portion. On the other hand, the outer peripheral pad portion is provided with a second cutting edge portion made of sintered diamond in an appropriate range having a base end at a position spaced from the tip end of the blade portion.
（作用） 本考案の回転切削工具では、被加工物の穴加工もしくは
溝加工に際し、まず被加工物に刃部先端の食付き部が食
付いて、後続の外周切刃部及び外周パット部により穴も
しくは溝をあけ進みかつならしていくわけであるが、こ
こで、該食付き部に連続する外周切刃部には焼結ダイヤ
モンドからなる第１の刃先部が設けられているので、穴
もしくは溝をこの第１の刃先部によりあけ進むことがで
きかつこの第１の刃先部を設けた部位の外周切刃部さら
にはこれに対応する部位の外周パット部の磨耗を抑制す
ることができる。切削がさらに進行すると、今度は外周
パット部に設けられた第２の刃先部が穴もしくは溝をな
らしていき、この第１の刃先部を設けた部位の外周パッ
ト部さらにはこれに対応する部位の外周切刃部の磨耗を
抑制することができる。このため、外周切刃部及び外周
パット部を含む刃部の磨耗が全体として抑制される。(Operation) With the rotary cutting tool of the present invention, when drilling or grooving a work piece, the bite part at the tip of the blade bites first on the work piece, and the outer peripheral cutting edge part and outer peripheral pad part The hole or groove is advanced and smoothed. Here, since the outer peripheral cutting edge portion continuing to the bite portion is provided with the first cutting edge portion made of sintered diamond, Alternatively, it is possible to advance the groove by the first cutting edge portion, and it is possible to suppress wear of the outer circumferential cutting edge portion of the portion where the first cutting edge portion is provided and the outer circumferential pad portion of the corresponding portion. . As the cutting further progresses, the second blade tip portion provided on the outer peripheral pad portion will level out the hole or the groove, and the outer peripheral pad portion of the portion where the first blade tip portion is provided, and further correspond to this. It is possible to suppress wear of the outer peripheral cutting edge portion of the portion. Therefore, wear of the blade portion including the outer peripheral cutting edge portion and the outer peripheral pad portion is suppressed as a whole.
（実施例） 次にこの考案の一実施例を、回転切削工具として穴加工
に用いられるリーマを例にとり、以下添附の図面を参照
して説明する。(Embodiment) Next, one embodiment of the present invention will be described below with reference to the accompanying drawings by taking a reamer used as a rotary cutting tool for hole drilling as an example.
第１図において１はリーマの本体を示し、相対する２条
の刃部2,2を備えた超合金材料からなる切削部３とシャ
ンク部４とを一体で備えている。In FIG. 1, reference numeral 1 denotes a body of a reamer, which is integrally provided with a cutting portion 3 and a shank portion 4 made of a superalloy material having opposing two blades 2, 2.
各刃部２は先端の切刃11と両側縁の外周切刃部5a及び外
周パット部5bを有しており、第１図に矢印で示した切削
回転方向側の外周切刃部5aには、同方向側の面に食付き
部６を起端とする適宜範囲で第２図及び第３図に示すよ
うに溝部７が形成されており、この溝部７には補強チッ
プ部８が装着されている。補強チップ部８はリーマ本体
１の材質と同様に超合金から形成された基部8aと、同基
部8a上に一体に焼結形成された焼結ダイヤモンドからな
る刃先部8bとから構成されており、対応する溝部７に対
して基部8aを嵌着するとともにその刃先部8bを刃部２の
外周切刃部5aと連続するように位置させてろう付け等の
手段により一体状に埋設固定されている。Each blade part 2 has a cutting edge 11 at the tip, outer peripheral cutting edge parts 5a and outer peripheral pad parts 5b on both side edges, and the outer peripheral cutting edge part 5a on the cutting rotation direction side shown by the arrow in FIG. As shown in FIG. 2 and FIG. 3, a groove portion 7 is formed on the surface of the same direction side with the biting portion 6 as a starting end, and a reinforcing tip portion 8 is attached to the groove portion 7. ing. The reinforcing tip portion 8 is composed of a base portion 8a made of a superalloy similar to the material of the reamer body 1, and a cutting edge portion 8b made of sintered diamond integrally sintered on the base portion 8a, The base portion 8a is fitted into the corresponding groove portion 7, the blade edge portion 8b is positioned so as to be continuous with the outer peripheral cutting edge portion 5a of the blade portion 2, and is embedded and fixed integrally by means such as brazing. .
各刃部２の外周パット部5bには切刃11より遠ざかる方向
に所定の間隔をおいた位置を起端とする適宜範囲におい
て切削回転方向と逆方向の面側に第４図及び第５図に示
すように溝部９が形成されている。この溝部９には上記
溝部７と同様に、超合金から形成された基部10aと、同
基部10a上に一体に焼結形成された焼結ダイヤモンドか
らなる刃先部10bとから構成された補強チップ10が装着
され、補強チップ10は対応する溝部10に対して基部10a
を嵌着するとともにその刃先部10bを外周パット部5bと
連続するように位置させてろう付け等の手段により一体
状に埋設固定されている。The outer peripheral pad portion 5b of each blade portion 2 is shown in FIGS. 4 and 5 on the surface side opposite to the cutting rotation direction in an appropriate range starting from a position spaced apart from the cutting edge 11 by a predetermined distance. The groove 9 is formed as shown in FIG. Similar to the groove portion 7, the groove portion 9 has a reinforcing tip 10 including a base portion 10a made of a superalloy and a cutting edge portion 10b made of sintered diamond integrally sintered on the base portion 10a. Is mounted, and the reinforcing tip 10 is attached to the base portion 10a with respect to the corresponding groove portion 10.
And the blade edge portion 10b is positioned so as to be continuous with the outer peripheral pad portion 5b, and is integrally embedded and fixed by means such as brazing.
なお、本実施例は特にリーマを例として説明したが、穴
あけに用いられるドリル、溝加工に用いられるエンドミ
ル等にも同様な構成を採用できる。さらに、焼結金属に
よる刃先部は上記のような溝への装着以外にも刃部の上
に直接被膜を形成する構成としてもよい。Although the present embodiment has been described by taking a reamer as an example, a similar configuration can be adopted for a drill used for drilling, an end mill used for grooving, and the like. Further, the blade tip portion made of sintered metal may have a structure in which a coating is directly formed on the blade portion in addition to the attachment to the groove as described above.
本実施例のリーマは被加工物の穴加工に際し、まず被加
工物に切刃11の食付き部６が食付いて下穴をあけ進み、
さらに後続の外周切刃部5a及び外周パット部5bにより穴
の周面をならして所定の加工を行うものであり、穴のあ
け進みの際には食付き部６を起端とする焼結ダイヤモン
ドからなる切刃部8bが、また後続の外周切刃部5a及び外
周パット部5bによる穴の周面のならしの際には切刃11か
ら遠ざかる方向に離間して位置する焼結ダイヤモンドか
らなる切刃部10bにより外周切刃部5a及び外周パット部5
bの摩耗が全体として抑制されて被加工物の加工内面と
の間の隙間のないダイヤモンド工具特有の加工面が得ら
れることとなる。The reamer of the present embodiment, when drilling a hole in a workpiece, first bites the biting portion 6 of the cutting edge 11 into the workpiece to advance a prepared hole,
Further, the peripheral surface of the hole is smoothed by the subsequent outer peripheral cutting edge portion 5a and the outer peripheral pad portion 5b to perform a predetermined process. Cutting blade portion 8b made of diamond, also from the sintered diamond located away from the cutting edge 11 when smoothing the peripheral surface of the hole by the subsequent outer peripheral cutting edge portion 5a and the outer peripheral pad portion 5b. The outer peripheral cutting edge portion 5a and the outer peripheral pad portion 5 are
The wear of b is suppressed as a whole, and a machined surface peculiar to a diamond tool having no gap between the machined inner surface of the workpiece and the machined surface can be obtained.
（効果） 本考案の回転切削工具では、第１の刃先部及び第２の刃
先部を設けたことにより、刃部全体の磨耗が抑制され、
これらの刃先部により被加工物の内面との間の隙間のな
いダイヤモンド工具特有の加工面が得られる。また、こ
のため振動に伴うチッピングが防止され、工具寿命が延
びるとともに、工具の継続使用によっても精度のよい加
工面を長く得ることができる利点を有する。(Effect) In the rotary cutting tool of the present invention, the wear of the entire blade portion is suppressed by providing the first blade edge portion and the second blade edge portion,
With these cutting edges, it is possible to obtain a machined surface peculiar to a diamond tool with no gap between the inner surface of the workpiece and the inner surface of the workpiece. Therefore, there is an advantage that chipping due to vibration is prevented, the tool life is extended, and a highly accurate machined surface can be obtained for a long time even if the tool is continuously used.
図はこの考案の一実施例を示すもので、第１図は回転切
削工具の全体を示す斜視図、第２図は第１図のＡ−Ａ線
拡大断面図、第３図は第２図中のＣ部詳細図、第４図は
第１図のＢ−Ｂ線拡大断面図、第５図は第４図中のＤ部
詳細図である。 １……リーマ本体 ２……刃部 5a……外周切刃部 5b……外周パット部 ６……食付き部 8b,10b……刃先部FIG. 1 shows an embodiment of the present invention. FIG. 1 is a perspective view showing the entire rotary cutting tool, FIG. 2 is an enlarged sectional view taken along the line AA of FIG. 1, and FIG. 3 is FIG. FIG. 4 is a detailed view of section C in FIG. 4, FIG. 4 is an enlarged sectional view taken along line BB of FIG. 1, and FIG. 5 is a detailed view of section D in FIG. 1 ...... Reamer body 2 ...... Blade 5a ...... Outer peripheral cutting edge 5b ...... Outer peripheral pad 6 ...... Bited part 8b, 10b ...... Blade tip
Claims (1)
工具であって、切削回転方向側及びその反対方向側に外
周切刃部及び外周パット部をそれぞれ備えた刃部を有
し、前記外周切刃部には当該刃部先端の食付き部を起端
とする適宜範囲において焼結ダイヤモンドからなる第１
の刃先部を設け、一方前記外周パット部には前記刃部先
端から所定の間隔をおいた位置を基端とする適宜範囲に
おいて焼結ダイヤモンドからなる第２の刃先部を設けた
ことを特徴とする回転切削工具。1. A rotary cutting tool used for drilling, grooving, or the like, which has a blade portion provided with an outer peripheral cutting edge portion and an outer peripheral pad portion on the cutting rotation direction side and the opposite direction side, respectively. The cutting blade has a first portion made of sintered diamond in an appropriate range starting from the chamfered portion at the tip of the blade.
And a second cutting edge portion made of sintered diamond is provided on the outer peripheral pad portion in an appropriate range with the base end at a position spaced from the tip of the cutting edge by a predetermined distance. A rotary cutting tool.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988116667U JPH0750099Y2 (en) | 1988-09-05 | 1988-09-05 | Rotary cutting tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1988116667U JPH0750099Y2 (en) | 1988-09-05 | 1988-09-05 | Rotary cutting tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0239820U JPH0239820U (en) | 1990-03-16 |
| JPH0750099Y2 true JPH0750099Y2 (en) | 1995-11-15 |
Family
ID=31359410
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1988116667U Expired - Lifetime JPH0750099Y2 (en) | 1988-09-05 | 1988-09-05 | Rotary cutting tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0750099Y2 (en) |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS598492B2 (en) * | 1981-07-13 | 1984-02-24 | 日本油脂株式会社 | High hardness sintered body reamer |
| JPS5955624U (en) * | 1982-10-05 | 1984-04-11 | 住友電気工業株式会社 | drilling tool |
| JPS6139525U (en) * | 1984-08-16 | 1986-03-12 | 留吉 今 | Circular band for knee stand |
-
1988
- 1988-09-05 JP JP1988116667U patent/JPH0750099Y2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0239820U (en) | 1990-03-16 |
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