JP2657271B2 - Cutting tools - Google Patents
Cutting toolsInfo
- Publication number
- JP2657271B2 JP2657271B2 JP4311291A JP31129192A JP2657271B2 JP 2657271 B2 JP2657271 B2 JP 2657271B2 JP 4311291 A JP4311291 A JP 4311291A JP 31129192 A JP31129192 A JP 31129192A JP 2657271 B2 JP2657271 B2 JP 2657271B2
- Authority
- JP
- Japan
- Prior art keywords
- chip
- cutting
- holder
- groove
- mounting
- 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
- Cutting Tools, Boring Holders, And Turrets (AREA)
Description
【０００１】[0001]
【産業上の利用分野】本発明は、金属、セラミック、プ
ラスチックなどの切削加工に用いられる切削工具に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool used for cutting metals, ceramics, plastics and the like.
【０００２】[0002]
【従来の技術】セラミック、非鉄金属などの精密切削加
工に好適なダイヤモンドバイトとしては、図５に示すよ
うに、ホルダ５に直接人造ダイヤモンド乃至天然ダイヤ
モンドのブランク２をろう付け固着したものが知られて
いる。又、図４に示すように、ブランク２を鋼又は超硬
合金製の平板状チップの端面に植え込んでチップ８を形
成しておき、このチップ８を予めチップ取り付け部を設
けたホルダに機械的に保持したチップの交換可能型のも
のも知られている、2. Description of the Related Art As a diamond cutting tool suitable for precision cutting of ceramics, non-ferrous metals, etc., there is known a diamond tool in which a blank 2 of artificial diamond or natural diamond is directly brazed to a holder 5 as shown in FIG. ing. As shown in FIG. 4, the blank 2 is implanted in the end face of a flat chip made of steel or cemented carbide to form a chip 8, and the chip 8 is mechanically mounted on a holder provided with a chip mounting portion in advance. There are also known interchangeable types of chips held in
【０００３】[0003]
【発明が解決しようとする課題】しかしながら、前記固
着型のものは、切刃の再研磨は可能であるが、ブランク
の交換は不能で効果が悪く、交換可能型のものにおいて
はチップ形成に手数、費用を要し、ホルダへの取り付け
構造上からも形状、寸法の制約があり十分でない。However, in the above-mentioned fixed type, although the cutting blade can be reground, the exchange of the blank is not possible and the effect is poor. It is costly, and the shape and dimensions are limited from the viewpoint of the mounting structure to the holder, which is not sufficient.
【０００４】本発明は、これら従来型の短所を解消した
交換型の切削工具を提供しようとするものである。[0004] The present invention seeks to provide an exchangeable cutting tool that overcomes these disadvantages of the conventional type.
【０００５】[0005]
【課題を解決するための手段】上記の課題を解決するた
めに、本発明は、切刃を半円筒状チップの端部に設け、
該チップを底部が半円状の取付溝を有するホルダに取り
付けるよう形成されている。In order to solve the above problems, the present invention provides a cutting blade at an end of a semi-cylindrical tip,
The tip is formed to be mounted on a holder having a mounting groove having a semicircular bottom.
【０００６】即ち、鋼棒などの丸棒を切断して円筒と
し、これを縦割り加工して図１の半円筒状のチップ３′
を作成し、更に、貫通孔１′を設ける。次いでその平面
側端部に人造ダイヤモンドよりなるブランク２をろう付
けなどにより固着し、図２（イ），（ロ），（ハ）乃至
は（ニ），（ホ），（ヘ）に示すような所要の切刃形状
を備えたチップに研削加工する。９は、切粉の流れを規
制するストッパで、省略してもよい。尚、このブランク
は、ダイヤモンドのほか、ＣＢＮ（立方晶形窒化硼
素）、ダイヤモンド状炭素、又はこれら一つ以上との混
合物、或はこれらを主成分とするか、切刃面に被覆した
超硬部材で構成してもよい。[0006] That is, a round bar such as a steel bar is cut into a cylinder, and this is vertically cut to form a semi-cylindrical chip 3 'in FIG.
Is formed, and a through hole 1 'is further provided. Next, a blank 2 made of artificial diamond is fixed to the flat side end by brazing or the like, as shown in FIGS. 2 (a), (b), (c) or (d), (e), (f). Grind into chips with the required cutting edge shape. Reference numeral 9 denotes a stopper for restricting the flow of chips, which may be omitted. The blank may be diamond, CBN (cubic boron nitride), diamond-like carbon, or a mixture with one or more of these, or a cemented carbide member containing these as a main component or coated on the cutting edge surface. May be configured.
【０００７】このチップ３を、図３に示すように、端部
に底部が半円状の取付溝４を有するホルダ５の取付溝に
嵌入し、ボルト６により固着する。[0007] As shown in FIG. 3, the chip 3 is fitted into a mounting groove of a holder 5 having a mounting groove 4 having a semicircular bottom at the end, and is fixed by a bolt 6.
【０００８】尚、貫通孔１は、切刃の再研磨に応じてボ
ルト６を嵌入して締付け固定する、固定箇所を移動可能
にしておくために、図２に示す楕円形のように、円筒軸
方向において長径としておく必要がある。図３の７は、
この嵌入したボルト６を受け入れら合する取付孔４の底
に設けたねじ孔である。[0008] The through-holes 1 are formed in accordance with the re-polishing of the cutting blade.
The bolt 6 can be inserted and tightened and fixed.
In order to keep the
It is necessary to keep the major axis in the direction. 3 in FIG.
It is a screw hole provided at the bottom of the mounting hole 4 for receiving the inserted bolt 6 .
【０００９】[0009]
【実施例】丸棒としては、非焼入れ鋼棒７ｍｍφ、１２
ｍｍφのものをそれぞれ１３ｍｍ、１８ｍｍに切断し、
更にＴ、３ｍｍ、６ｍｍ厚の平面加工し、図２に示すチ
ップ３を作製した。これを、１０ｍｍ角、並びに２０ｍ
ｍ角で長さ１００ｍｍの鋼製ホルダ５にそれぞれ取り付
けて、アルミニウム、銅を切削したところ、図５の固着
型のダイヤモンドバイトと同様な加工精度を得た。EXAMPLE As a round bar, a non-hardened steel bar 7 mmφ, 12 mm
mmφ is cut into 13mm and 18mm respectively.
Further, T, 3 mm, and 6 mm thick were flat-processed to produce a chip 3 shown in FIG. This is 10mm square, 20m
The aluminum and copper were attached to steel holders 5 each having an m square and a length of 100 mm, and aluminum and copper were cut. As a result, processing accuracy similar to that of the fixed diamond tool shown in FIG. 5 was obtained.
【００１０】[0010]
【発明の効果】本発明は、切刃の交換が可能で、図５の
ような不可能型の問題が解消されることはいうまでもな
いが、可能型において更に次のような効果を奏する。図
４のような平板状チップにおいては、その加工は６面よ
り切削加工が必要であるが、本発明のチップは丸棒より
の切断と半割り方向の切削加工で済み、加工費用が節減
される。According to the present invention, it is needless to say that the cutting blade can be replaced and the problem of the impossible type as shown in FIG. 5 can be solved. . In the case of a flat chip as shown in FIG. 4, the processing requires cutting from six surfaces, but the chip of the present invention requires only cutting from a round bar and cutting in a half-split direction, thereby reducing the processing cost. You.
【００１１】平板状チップにおいては、ホルダ取り付け
部の構造上も形状が限定され、寸法的にも微小なものは
困難であるが、本発明における形状、寸法の制約は極め
て少なく、再研磨も可能である。[0011] In the case of a flat chip, the shape of the holder mounting portion is limited in terms of the structure, and it is difficult to make it minute in size, but the shape and size in the present invention are extremely limited, and re-polishing is possible. It is.
【００１２】平板状チップでは、厚みＴが限定され、切
削抵抗主分力ｆに対して十分な剛性を得にくいが、本発
明においては、チップのＴが厚く、又ホルダの厚みt2も
大きく、取付溝底面が半円形状で、十分な剛性を備えて
いる。In the case of a flat chip, the thickness T is limited, and it is difficult to obtain sufficient rigidity with respect to the main component f of the cutting resistance. However, in the present invention, the T of the chip is large and the thickness t 2 of the holder is also large. The bottom surface of the mounting groove is semicircular and has sufficient rigidity.
【００１３】又、本発明においては、チップとホルダが
円筒面で接するため、互いに密着し易く、加工時の誤差
が吸収され刃先角度の再現性も向上する。Further, in the present invention, since the tip and the holder are in contact with each other on the cylindrical surface, they are easily brought into close contact with each other, errors in machining are absorbed, and the reproducibility of the cutting edge angle is improved.
【００１４】ホルダの取付溝は、エンドミル外周切刃を
用いて半円筒状に座ぐり加工を行い、タップ孔を開ける
ことにより容易に完成することができ、又、その取り付
け方向も限定されることはないので、同一形状のチップ
を持って、それぞれのホルダの取付溝の形成方向を選択
し、それに合した端部形状のものを作製することによ
り、外径端面切削用、内径加工用バイト、フライス用工
具と多種切削加工用工具として使用できる特徴を有す
る。The mounting groove of the holder can be easily completed by forming a semi-cylindrical counterbore using an end mill outer peripheral cutting edge and forming a tapped hole, and the mounting direction thereof is also limited. There is no, so by holding the same shape of the chip, selecting the mounting groove forming direction of each holder, and manufacturing the end shape that matches it, for cutting the outer diameter end face, cutting tool for the inner diameter, It has the feature that it can be used as a milling tool and various kinds of cutting tools.
【００１５】又、前記のように、剛性の高い構成なの
で、チップ底部端からの切刃先の突出量Ｓを大きくとる
ことができ、再研磨修正後、切刃が後退（通常０．５〜
１ｍｍ）しても、ホルダより切刃先端が突出しており、
繰り返し再研磨使用することができる。又、再研磨修正
後の切刃後退量が大きい場合は、図３の調整ねじ10を用
いて切刃先端の突出量を調整することで適切な突出量と
することができる。Further, as described above, since the configuration is high in rigidity, the amount of protrusion S of the cutting edge from the bottom end of the chip can be increased, and after the re-polishing correction, the cutting edge retreats (usually 0.5 to 0.5).
1 mm), the tip of the cutting blade protrudes from the holder,
It can be used repeatedly for re-polishing. When the retreat amount of the cutting blade after the re-polishing correction is large, an appropriate protrusion amount can be obtained by adjusting the protrusion amount of the tip of the cutting blade using the adjusting screw 10 of FIG.
【図１】チップ部分の半加工状態を示す斜視図。FIG. 1 is a perspective view showing a semi-processed state of a chip portion.
【図２】（イ）、（ニ）はチップの平面図、（ロ）、
（ホ）はチップの左側面図、（ハ）、（へ）はチップの
正面図。FIGS. 2A and 2D are plan views of a chip, FIGS.
(E) is a left side view of the chip, (c) and (f) are front views of the chip.
【図３】（イ）はホルダの平面図、（ロ）はホルダのチ
ップ取付側正面図。3A is a plan view of a holder, and FIG. 3B is a front view of the holder on a chip mounting side.
【図４】従来の平板状チップの斜視図。FIG. 4 is a perspective view of a conventional flat chip.
【図５】（イ）は従来の固着型バイト平面図、（ロ）は
従来の固着型バイト正面図。5A is a plan view of a conventional fixed-type cutting tool, and FIG. 5B is a front view of a conventional fixed-type cutting tool.
１、１′ 貫通孔 ２ ブランク ３、３′ チップ ４ 取付溝 ５ ホルダ ６ ボルト ７ ねじ孔 ８ 平板状チップ ９ ストッパ 10 調整ねじ ｆ 切削抵抗の主分力 Ｔ、t2 厚み Ｓ チップ底部端からの切刃先の突出量1, 1 'through hole 2 blank 3, 3' chip 4 mounting groove 5 holder 6 bolt 7 screw hole 8 flat chip 9 stopper 10 adjusting screw f main component of cutting resistance T, t 2 thickness S from tip bottom end Projection amount of cutting edge
Claims (2)
る円筒軸方向に長径の取付孔１を有し、平面側端部にダ
イヤモンド、ＣＢＮ、ダイヤモンド状炭素の１つ、また
は２つ以上を主成分とする超硬質材料で切刃面が形成さ
れたブランク２を固着してなる半円筒状のチップ３と、
端部に該チップ３を受け入れる底部の断面が半円状の取
付溝４を有し、かつ該取付溝４中央部には取付孔１に嵌
入したボルト６とら合するねじ孔７を設けてなるホルダ
５とを具備してなることを特徴とする切削工具。[Claim 1 further comprising a cylindrical axis which penetrates the cylindrical side central portion than the plane side central portion of the mounting hole 1 of the major axis, da to the planar end
One of diamonds, CBN, diamond-like carbon,
Is a super hard material with two or more main components and a cutting surface
A semi-cylindrical chip 3 having the blank 2 fixed thereto,
The cross section of the bottom for receiving the chip 3 have a semicircular fitting groove 4 in the end portion, and the groove 4 the central portion with said mounting fitting to the mounting hole 1
Cutting tool, characterized by comprising; and a holder 5 ing to the screw hole 7 provided for the bolt 6 taken if the entrance.
刃先端側への突出量を調整する調整ねじ１０を設けたこ
とを特徴とする請求項１記載の切削工具。 The cutting groove of the chip is inserted into the mounting groove of the holder.
An adjustment screw 10 for adjusting the amount of protrusion to the blade tip side is provided.
The cutting tool according to claim 1, wherein:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311291A JP2657271B2 (en) | 1992-10-26 | 1992-10-26 | Cutting tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4311291A JP2657271B2 (en) | 1992-10-26 | 1992-10-26 | Cutting tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH06134606A JPH06134606A (en) | 1994-05-17 |
| JP2657271B2 true JP2657271B2 (en) | 1997-09-24 |
Family
ID=18015368
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4311291A Expired - Lifetime JP2657271B2 (en) | 1992-10-26 | 1992-10-26 | Cutting tools |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2657271B2 (en) |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6017641B2 (en) * | 1976-05-26 | 1985-05-04 | 三菱マテリアル株式会社 | Throwaway tip fixing device |
| JPS5444293A (en) * | 1977-09-13 | 1979-04-07 | Sumitomo Electric Ind Ltd | Composite cutting tool and method of regenerating the same |
-
1992
- 1992-10-26 JP JP4311291A patent/JP2657271B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPH06134606A (en) | 1994-05-17 |
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