JPS62218044A - Rotary tool - Google Patents
Rotary toolInfo
- Publication number
- JPS62218044A JPS62218044A JP6015086A JP6015086A JPS62218044A JP S62218044 A JPS62218044 A JP S62218044A JP 6015086 A JP6015086 A JP 6015086A JP 6015086 A JP6015086 A JP 6015086A JP S62218044 A JPS62218044 A JP S62218044A
- Authority
- JP
- Japan
- Prior art keywords
- rotary tool
- layer portion
- inner layer
- outer layer
- vibration damping
- 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
- 238000013016 damping Methods 0.000 claims abstract description 36
- 239000000463 material Substances 0.000 claims description 21
- 230000008878 coupling Effects 0.000 claims description 15
- 238000010168 coupling process Methods 0.000 claims description 15
- 238000005859 coupling reaction Methods 0.000 claims description 15
- 239000004593 Epoxy Substances 0.000 claims description 7
- 230000001070 adhesive effect Effects 0.000 claims description 6
- 239000000853 adhesive Substances 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 5
- 239000000956 alloy Substances 0.000 claims description 5
- 229910001018 Cast iron Inorganic materials 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 229910017709 Ni Co Inorganic materials 0.000 claims description 2
- 229910003267 Ni-Co Inorganic materials 0.000 claims description 2
- 229910003262 Ni‐Co Inorganic materials 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- 238000003754 machining Methods 0.000 abstract description 10
- 230000035939 shock Effects 0.000 abstract 1
- 238000003801 milling Methods 0.000 description 6
- 238000002474 experimental method Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003746 surface roughness Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 229910000632 Alusil Inorganic materials 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- 229910000881 Cu alloy Inorganic materials 0.000 description 1
- 229910000990 Ni alloy Inorganic materials 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 229910001297 Zn alloy Inorganic materials 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 239000010730 cutting oil Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 239000004615 ingredient Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- 229920006122 polyamide resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 230000002747 voluntary effect Effects 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
- B23Q11/0032—Arrangements for preventing or isolating vibrations in parts of the machine
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Drilling Tools (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
この発明は、工作機械に装着されて回転し、被加工物を
加工するフライス、ドリル、タップ。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a milling cutter, drill, or tap that is attached to a machine tool and rotates to process a workpiece.
リーマ、軸付砥石、砥石円盤等の回転工具に関する。Related to rotary tools such as reamers, whetstones with shafts, and whetstone discs.
一般に、工作機械の主軸に装着され１回転によって被加
工物を切削したり、穴あけするフライスやドリル等の回
転工具は、刃先部とベース部とから構成されている。こ
れらの回転工具については、その精度を損ねないで工具
寿命を延ばすために、工具の素材成分自体を検討したり
、あるいは個々の被加工材料に対応して工具の形状や切
削条件を定めるなどの工夫が行われている。すなわち、
素材については靭性、耐摩耗性。Generally, a rotary tool such as a milling cutter or a drill, which is attached to the main shaft of a machine tool and is used to cut or drill a hole in a workpiece in one rotation, is composed of a cutting edge portion and a base portion. For these rotating tools, in order to extend the tool life without sacrificing accuracy, it is necessary to consider the material composition of the tool itself, or to determine the shape and cutting conditions of the tool in accordance with each workpiece material. Efforts are being made. That is,
Regarding the material, it is tough and wear resistant.
耐熱性および耐振性等を付与する元素や成分量を定め、
さらにこのような素材によって製作された回転工具の刃
先部の形状として、被加工材料に対応してすくい角、に
げ角、切れ刃角、ノーズ半径、チゼルやウェブ幅、切れ
刃のねじれ角等が定められており、また同時に切削条件
として切削速度、送り速度、切り込み、切削油材種等を
最適化することによって、工具の長寿命化を図っている
。We determine the elements and amounts of ingredients that provide heat resistance and vibration resistance, etc.
Furthermore, the shape of the cutting edge of a rotary tool made from such materials includes the rake angle, rake angle, cutting edge angle, nose radius, chisel and web width, helix angle of the cutting edge, etc., depending on the workpiece material. At the same time, by optimizing cutting conditions such as cutting speed, feed rate, depth of cut, cutting oil type, etc., the tool life is extended.
しかしながら、従来の回転工具は、そのベース部がソリ
ッド形式、すなわち単一体型の円盤状または中実丸軸状
に形成されており、このように構成された回転工具にお
いては、刃先部の形状や切削条件を改良しても、加工中
における振動をさらに制振するには限度があり、特に断
続的切削加工時に発生する振動を制振することは限界に
来ている。However, the base of conventional rotary tools is formed in a solid form, that is, in the shape of a single disc or solid round shaft, and in rotary tools configured in this way, the shape of the cutting edge and Even if the cutting conditions are improved, there is a limit to further suppressing vibrations during machining, and in particular, the ability to suppress vibrations that occur during intermittent cutting has reached its limit.
この発明は、前記事情に着目してなされたもので、その
目的とするところは、簡単な構成でありながら、加工中
における振動を減衰させて加工精度を向上させるととも
に、工具寿命の長い回転工具を提供することにある。The present invention was made in view of the above-mentioned circumstances, and its purpose is to improve machining accuracy by damping vibrations during machining, while having a simple structure, and to provide a rotary tool with a long tool life. Our goal is to provide the following.
（問題点を解決するための手段及び作用〕この発明は、
刃先部とベース部とを具備する回転工具のベース部を、
所定の半径で径方向に分割した内層部と外層部とにより
形成し、この内層部と外層部との間に制振結合層を介在
させて両者を結合することにより、ベース部で外力を吸
収して刃先部に加わる衝撃力を緩和することを特徴とす
る。(Means and effects for solving the problems) This invention has the following features:
A base part of a rotary tool comprising a cutting edge part and a base part,
It is formed by an inner layer and an outer layer divided in the radial direction at a predetermined radius, and a damping coupling layer is interposed between the inner layer and the outer layer to connect them, so that the base absorbs external force. It is characterized by reducing the impact force applied to the cutting edge.
以下、この発明の実施例を図面に基づいて説明する。 Embodiments of the present invention will be described below based on the drawings.
第１図及び第２図は第１の実施例を示すもので、回転工
具としてフライスカッタを示している。このフライスカ
ッタは、実質的に円筒状のベース部１とこのベース部１
の下端部に一体的に設けられた刃先部２・２とから構成
されている。上記ベース部１は所定の半径で径方向に分
割された外層部３と内層部４とにより形成されており、
かつ外層部３と内層部４とはいずれも実質的に円筒状に
形成されている。そして、この外層部３と内層部４との
間には制振結合層５が介在されていて、この制振結合層
５によって外層部３と内層部４とは一体的に結合されて
いる。また、上記ベース部１の上端側に位置する外層部
３の内壁および内層部４の外壁には互いに対向するキー
溝３ａ、４ａが刻設されているとともに、これらキー溝
３ａ、４ａには両者に係合状態にキー６が挿入されてお
り、キー溝３ａ、４ａとキー６とによって外層部３と内
層部４の回り止め部７を構成している。さらに、このキ
ー溝３ａ、４ａとキー６との間には上記制振結合層５が
充填されていて、外層部３および内層部４に対してキー
６が直接接触しない構造となっている。1 and 2 show a first embodiment, in which a milling cutter is shown as the rotary tool. This milling cutter comprises a substantially cylindrical base part 1 and a base part 1 having a substantially cylindrical shape.
It consists of a cutting edge part 2, which is integrally provided at the lower end of the blade. The base portion 1 is formed by an outer layer portion 3 and an inner layer portion 4 that are divided in the radial direction at a predetermined radius,
In addition, both the outer layer part 3 and the inner layer part 4 are formed into a substantially cylindrical shape. A damping coupling layer 5 is interposed between the outer layer section 3 and the inner layer section 4, and the outer layer section 3 and the inner layer section 4 are integrally coupled by the vibration damping coupling layer 5. In addition, key grooves 3a and 4a facing each other are carved in the inner wall of the outer layer part 3 and the outer wall of the inner layer part 4 located on the upper end side of the base part 1. A key 6 is inserted in an engaged state, and the key grooves 3a, 4a and the key 6 constitute a rotation preventing portion 7 of the outer layer portion 3 and the inner layer portion 4. Further, the vibration damping coupling layer 5 is filled between the key grooves 3a, 4a and the key 6, so that the key 6 does not come into direct contact with the outer layer 3 and the inner layer 4.
上記外層部３および内層部４の各素材は必ずしも同一ま
たは同種の素材である必要はなく、一般的に例えばＦＣ
ＩＯ，Ｆｅ１２、オーステナイト系Ｎ ｉ ７ Ｃｏ合
金鋳鉄、ＦＣＤ４５．ＳＫ５、ＡＩ−（５〜５５）％Ｚ
ｎ、ＡＡ規格４０３２． Ａ３９０、Ｎｉ合金、Ｃｕ合
金、Ａ１合金等の振動減衰材料を任意に選択して使用す
ることができるが、実験によれば、特にＣ： ０．８〜
３．０％、Ｓｉ；１．０〜３．０％、Ｎｉ；２５〜４０
％、Ｃｏ ： ４．０〜６．０％、Ｍｎ；Ｏ〜２．０％
、Ｓ：０−１．０％、ｐｒｏ〜１．５％、残不純物を含
むＦｅよりなるオーステティ１〜系Ｎ１−Ｇｏ合金鋳鉄
を使用するのが好ましく、さらに熱膨張係数（０〜２０
℃）→（２〜３）ＸＩＯ−’／℃。The materials of the outer layer portion 3 and the inner layer portion 4 do not necessarily have to be the same or the same kind of material, and generally, for example, FC
IO, Fe12, austenitic Ni7Co alloy cast iron, FCD45. SK5, AI-(5-55)%Z
n, AA standard 4032. Vibration damping materials such as A390, Ni alloy, Cu alloy, A1 alloy, etc. can be arbitrarily selected and used, but according to experiments, C: 0.8~
3.0%, Si; 1.0-3.0%, Ni; 25-40
%, Co: 4.0-6.0%, Mn; O-2.0%
, S: 0-1.0%, pro-1.5%, it is preferable to use Austety 1-based N1-Go alloy cast iron consisting of Fe containing residual impurities, and further has a coefficient of thermal expansion (0-20
°C)→(2-3)XIO-'/°C.
エネルギー損失率→２５〜３０％の物理的性質を有する
ものが特に好ましい。Particularly preferred are those having physical properties with an energy loss rate of 25 to 30%.
また、上記制振結合ＭＳは、一般的に接着性を有する高
分子材料を使用することができるが、特にエポキシを主
成分とするエボキシボリアミド系樹脂で、つぎの物理的
性質を示すものが好ましい。In addition, for the above-mentioned vibration damping coupling MS, generally a polymeric material having adhesive properties can be used, but in particular, an epoxyboryamide resin whose main component is epoxy, and which exhibits the following physical properties. preferable.
引張せん断強さ’ｉｔ＋ １０〜２０Ｍ Ｐａ硬化前の
粘度（常温）→３０〜４０Ｐａ−８硬化時の体積収縮率
→約２．４％
硬化物の横弾性率→Ｇ ＝０．０５〜０．２Ｇ Ｐａ減
衰係数→ Ｃ＝３〜５ＭＰａ−８
接着剤部分のばね定数→に＝７０〜１３０ＧＮ１ｍそし
て、この制振結合層５の厚さは、好ましくは３０ｍ〜０
．５ｍの範囲であり、特に好ましくは１．０ｍ〜０．５
ｆｆｌである。Tensile shear strength 'it+ 10-20 M Pa Viscosity before curing (room temperature) → 30-40 Pa-8 Volume shrinkage rate upon curing → about 2.4% Transverse elastic modulus of cured product → G = 0.05-0. 2G Pa damping coefficient → C = 3 to 5 MPa-8 Spring constant of adhesive part → to = 70 to 130 GN1 m And the thickness of this damping coupling layer 5 is preferably 30 m to 0
．． The range is 5 m, particularly preferably 1.0 m to 0.5 m.
ffl.
つぎに、上述のように構成された回転工具の特性を、実
験の結果にもとづいて説明する。すなわち、つぎに示す
範囲の材料を用いて第１図および第２図に示した構造の
ベース部を有するフライスカッタ（以下Ｄｏ−Ｈという
）をｌθ個製作し、実際に被加工物（ＳＫ−３）を切削
し、そのフランク摩耗を測定してみた。Next, the characteristics of the rotary tool configured as described above will be explained based on the results of experiments. That is, lθ milling cutters (hereinafter referred to as Do-H) having base portions having the structure shown in FIGS. 3) was cut and its flank wear was measured.
（内層部及び外層部の材料）
組成： Ｃ２，０〜３．０％、 Ｓｉ ２．０〜３．０
％、Ｎｉ２５〜４０％、Ｃｏ ５．０〜６．０％、Ｍ
ｎ ＜ ２ 、０％、Ｓ＜１．０％、Ｐ＜１．５％物
理的性質：
熱膨張係数（０〜２０℃）
→（２Ｘ ３）ＸＩＯ−’／’Ｃ
エネルギー損失率→２７％
引張強さ→１０〜２０ｋｇｆ／ａｎ”
ブリネル硬さ）（Ｂ−４１５０〜１７０縦弾性係数→８
０００〜９０００
伸び →８％以下
比重 →７．８
（制振結合層の材料）
組成： エポキシを主成分としたエポキシポリアミド系
樹脂
物理的性質：
引張せん断強さ′じｔ １０〜１５ＭＰａ硬化時の
体積収縮率 ３０〜４０Ｐａ−８硬化物の横弾性率Ｇ
Ｏ，ＩＧＰａ
減衰係数ｃ ４．５ＭＰａ−８接着剤部分の
ばね定数 １０００ Ｎ１ｍ
比較のため、下記フライスカッタＡ（以下ＤＯという）
およびＢ（以下５Ｋ−５という）を用意し、同じように
同一の被加工物（ＳＫ−３）を切削し、同様にフランク
摩耗を測定してみた。(Material of inner layer and outer layer) Composition: C2, 0-3.0%, Si 2.0-3.0
%, Ni 25-40%, Co 5.0-6.0%, M
n < 2, 0%, S < 1.0%, P < 1.5% Physical properties: Coefficient of thermal expansion (0-20°C) → (2X 3)XIO-'/'C Energy loss rate → 27% Tensile strength → 10 to 20 kgf/an” Brinell hardness) (B-4150 to 170 longitudinal elastic modulus → 8
000-9000 Elongation → 8% or less Specific gravity → 7.8 (Material of vibration-damping bonding layer) Composition: Epoxy polyamide resin whose main component is epoxy Physical properties: Tensile shear strength 't 10-15 MPa when cured Volume shrinkage rate 30-40 Pa-8 Transverse elastic modulus G of cured product
O, IGPa Damping coefficient c 4.5MPa-8 Spring constant of adhesive part 1000 N1m For comparison, the following milling cutter A (hereinafter referred to as DO)
and B (hereinafter referred to as 5K-5) were prepared, the same workpiece (SK-3) was cut in the same manner, and flank wear was measured in the same manner.
カッタＡ （Ｄｏ）
Ｄｏ−Ｈの内層部および外層部の材料
と同一の材料を用いて製作したものであるが、内層部と
外層部とに分割しないで従来の単一体型に形成したベー
ス部を有するもの。Cutter A (Do) It is manufactured using the same material as the inner and outer layer parts of Do-H, but the base part is formed into a conventional single body without being divided into an inner layer part and an outer layer part. Those with
カッタＢ （ＳＫ−５）
ＪＩＳ規格５Ｋ−５（Ｇ Ｏ，８０〜０．９０％を含む
炭素工具鋼）で示されている材料を用いて、ＤＯと同様
に従来の単一体型に形成したベース部を有するもの。Cutter B (SK-5) Made of a material specified by JIS standard 5K-5 (carbon tool steel containing 80% to 0.90% GO), it is formed into a conventional single-piece structure in the same way as DO. Something with a base.
第７図は、その測定の結果（Ｄｏ−Ｈは平均値）を示し
たものである。この切削実験は、各カッ３１ Ｄ Ｏ−
ＨｌＤｏ、５Ｋ−５について、切削時間に対して工具欠
損（チッピング）が発生するところまでフランク摩耗を
追跡したものである。FIG. 7 shows the results of the measurement (Do-H is the average value). In this cutting experiment, each cutter 31D O-
For HlDo, 5K-5, flank wear was traced to the point where tool chipping occurred with respect to cutting time.
Ｄｏ−Ｈは約４０ ｗｉｎであるのに対し５Ｋ−５が約
２０ｍ１ｎであるから、Ｄ Ｏ−Ｈの工具寿命は５Ｋ−
５のそれに比較して約２倍に伸びていることがわかる。Do-H is about 40 win, while 5K-5 is about 20 m1n, so the tool life of DO-H is 5K-
It can be seen that it has grown approximately twice as much as that of 5.
また、ＤＯは約３０＋ｓｉｎであるから、Ｄｏ−Ｈの工
具寿命はＤｏのそれと比較しても約２５％伸びたことに
なる。なお、第７図中２本の同じマークの曲線は、同一
カッタを上限と下限の寿命曲線をプロットしたものであ
る。 ・第８図はＤｏ−Ｈ，５Ｋ−５，ＤＯと、 さ
らにＤＯに用いた材料にＳｉを添加して素材の剛性を高
くした材料でＤＯ同様に単一体型に形成したベースを有
するカッタ（以下Ｄｏ （ＳＬ）という） 、Ａｌ−５
５％Ｚｎ合金でＤＯ同様に単一体型に形成したベースを
有するカッタ（以下Ａｌ−５５％Ｚｎという）およびＤ
Ｏ−Ｈに用いた材料にｇｉを添加して素材の剛性を高く
した材料でＤ Ｏ−Ｈ同様の構造に形成したベース部を
有するカッタ（以下Ｄ Ｏ−Ｈ（Ｓ ｉ ）という）に
ついて、これら各カッタを使用して被加工物（Ｓに−３
）を切削したときの仕上面粗さの変化を切削時間に対し
て示したものである。仕上面粗さは、５Ｋ−５が最も粗
面を呈し、つぎにり。Further, since DO is about 30+sin, the tool life of Do-H is increased by about 25% compared to that of Do. Note that the two curves with the same mark in FIG. 7 are the upper and lower limit life curves of the same cutter plotted.・Figure 8 shows Do-H, 5K-5, DO, and a cutter with a base formed into a single body like DO, which is made of a material made by adding Si to the material used for DO to increase the rigidity of the material ( (hereinafter referred to as Do (SL)), Al-5
A cutter (hereinafter referred to as Al-55%Zn) having a base made of 5% Zn alloy and formed into a single body like DO and D
Regarding a cutter (hereinafter referred to as D O-H (S i )) that has a base portion formed in a structure similar to D O-H using a material whose rigidity is increased by adding gi to the material used for O-H, Using each of these cutters, the workpiece (-3
) shows the change in finished surface roughness versus cutting time. Regarding the finished surface roughness, 5K-5 has the roughest surface, followed by 5K-5.
−Ｈ，ＤＯ（Ｓｉ） 、 Ａ １−５５％Ｚｎの順に良
くなり、ＤＯが最も細密面を生成する。しかし、これに
よってもＤｏ−Ｈは現在一般的に実用されている５Ｋ−
５と比較すれば、それ以上に改善向上されるものである
ことがわかる。-H, DO(Si), and A 1-55% Zn are better in this order, and DO produces the most dense surface. However, even with this, Do-H is now commonly used in 5K-
When compared with 5, it can be seen that the improvement is even greater.
第９図は第８図の実験と同一のカッタを用いて切削した
ときの単位時間当りの除去体積を切削時間に対して示し
たものである。除去速度は約２０＋ｍ３／ｗｉｎ辺りで
変化し、Ｄｏ−Ｈは５Ｋ−５に比較してほとんど変化が
認められない。FIG. 9 shows the volume removed per unit time versus the cutting time when cutting was performed using the same cutter as in the experiment shown in FIG. The removal rate changes around 20+m3/win, and almost no change is observed in Do-H compared to 5K-5.
なお、実験によれば、他に工具材種を超硬工具、Ｐ２Ｏ
、ＫＩＯ，ＭＩＯ，Ｍ２Ｏおよびサーメットと変えても
前述したこの発明のＤｏ−Ｈの効果は高く認められ、５
Ｋ−３以外の材料を切削した場合にも有効なことが判明
している。According to experiments, other tool materials include carbide tools and P2O.
, KIO, MIO, M2O and cermet, the above-mentioned Do-H effect of this invention is highly recognized, and 5
It has been found that this method is also effective when cutting materials other than K-3.
このように１本実施例によれば、回転工具のベース部１
に制振減衰材料を使用し、さらに制振結合層５として高
減衰性を持つ高分子材料の接着剤を介在させることによ
って、加工抵抗を確実に吸収減衰させる。これによって
、工具に作用する加工抵抗は小さく抑えることができ。Thus, according to one embodiment, the base portion 1 of the rotary tool
By using a vibration damping material in the vibration damping bonding layer 5 and interposing an adhesive made of a polymeric material having high damping properties as the vibration damping bonding layer 5, processing resistance can be reliably absorbed and damped. This allows the machining resistance acting on the tool to be kept low.
精度と除去能率を一定に維持した状態で工具寿命を大幅
に延ばすことができる。Tool life can be significantly extended while maintaining constant accuracy and removal efficiency.
第３図および第４図は第２の実施例を示すもので１回転
工具としてドリルを示したものである。このドリルはベ
ース部８と刃先部９とからなり、ベース部８は第１の実
施例と同様に径方向に分割した外層部３と内層部４とか
ら形成され、この外層部３と内層部４との間に制振結合
層５が介在されている。さらに、内層部４の下端部には
係合穴１０が設けられ、この係合穴１０には上記刃先部
９の上端部に突設された係合突起１１が係合されている
。また、係合穴１０と係合突起１１との間には上記制振
結合層５が充填されており、ベース部８に対して刃先部
９が一体的に結合されている。なお、第３図および第４
図において、第１の実施例と同一構成部分は同一番号を
付して説明を省略する。3 and 4 show a second embodiment, in which a drill is shown as a one-rotation tool. This drill consists of a base part 8 and a cutting edge part 9, and the base part 8 is formed from an outer layer part 3 and an inner layer part 4 which are divided in the radial direction as in the first embodiment. A vibration damping coupling layer 5 is interposed between the vibration damping layer 4 and the vibration damping coupling layer 5. Further, an engagement hole 10 is provided at the lower end of the inner layer portion 4, and an engagement protrusion 11 protruding from the upper end of the cutting edge portion 9 is engaged with this engagement hole 10. Further, the space between the engagement hole 10 and the engagement protrusion 11 is filled with the vibration damping coupling layer 5, and the cutting edge portion 9 is integrally connected to the base portion 8. In addition, Figures 3 and 4
In the figures, the same components as those in the first embodiment are given the same numbers and the explanation will be omitted.
また、第５図は回転工具として回転砥石を、第６図はリ
ーマをそれぞれ示したもので、第２の実施例と同様にベ
ース部８と刃先部９とからなり、そのベース部８は外層
部３と内層部４および制振結合層５によって構成されて
いる。Furthermore, FIG. 5 shows a rotary grindstone as a rotary tool, and FIG. 6 shows a reamer, respectively, which are composed of a base part 8 and a cutting edge part 9 as in the second embodiment, and the base part 8 is made of an outer layer. It is composed of a portion 3, an inner layer portion 4, and a damping coupling layer 5.
そして、この発明は上記実施例に限定されず、他の回転
工具にも採用することができる。The present invention is not limited to the above-mentioned embodiments, and can be applied to other rotary tools.
以上説明したように、この発明によれば、切削時に生じ
る振動および断続切削時に生じる衝撃力を制振すること
ができ、加工精度、加工速度を向上させることができる
。しかも、ベース部を外層部と内層部およびこの両者間
に介在結合した制振結合層とから構成したから、ＷＭ単
な構造であり、廉価に提供できるとともに、加工騒音も
低減できるという効果もある。As described above, according to the present invention, it is possible to suppress the vibrations generated during cutting and the impact force generated during intermittent cutting, and it is possible to improve machining accuracy and machining speed. Moreover, since the base part is composed of an outer layer part, an inner layer part, and a vibration-damping coupling layer interposed between the two, it has a simple WM structure, can be provided at a low price, and has the effect of reducing processing noise. .
第１図はこの発明の第１の実施例を示す斜視図、第２図
は第１図の横断平面図、第３図はこの発明の第２の実施
例を示す縦断側面図、第４図は第３図の横断平面図、第
５図および第６図はこの発明のそれぞれ異なる実施例を
示す側面図、第７図は切削時間と工具のフランク摩耗と
の関係を示す特性線図、第８図は切削時間と各種工具の
仕上面粗さＲａとの関係を示す特性線図、第９図は切削
時間に対して各種工具の除去速度を示す特性線図である
。
１・・・ベース部 ２・・・刃先部
３・・・外層部 ４・・・内層部
５・・・制振結合層
第３ しＪ
第５図 第６図
第７図
Ｃｕ１ｌｌｎ９ ＋＋ｒｎｅ ｍｉｎ第Ｓ因
ＣＩＪＨｉｎｇ ｌｉｍｅ ｒｎｉｎ第９図
刊［１界
手続補正書
昭和６１年４月１６日
ｌパ
特許庁長官 宇 賀 道 部 殿が１１、事件
の表示
昭和６１年特許願第６０１５０ 号
２、発明の名称 回 転 工 具
４、代理人
住 所 東京都中央区銀座６丁目７番１６号岩月ビル吻
■雫シ
５、補正命令の日付 自発
６、補正により増加する発明の数 ０７、補正の
対象 明細書の特許請求の範囲の欄及び発明の詳細
な説明の欄
７・−７
８、補正の内容 ／って形成
した振動減衰材料からなることを特徴と１、明細書の「
特許請求の範囲」の欄の記載を下記のとおり訂正する。
（訂正部分は４項）
記
（１）刃先部とベース部とを具備する回転工具において
、上記ベース部を所定の半径で径方向に分割した内層部
と外層部とにより形成し、この内層部と外層部との間に
両者を結合する制振結合層を介在させたことを特徴とす
る回転工具。
（２）内層部と外層部とは、キー溝とこのキー溝に挿入
されるキーとによって回り止めされ、かつ上記キー溝と
キーとの間に制振結合層が介在されていることを特徴と
する特許請求の範囲第１項記載の回転工具。
（３）内層部および外層部は、 Ｃ： ０．８〜３．０
％、Ｓｉ：１．０〜３．０％、 Ｎｉ ； ２５〜４０
％、 Ｃｏ ； ４．Ｏ〜６．０％１Ｍｎ；０〜２．０
％、Ｓ；Ｏ〜１．０％、Ｐ；Ｏ〜１．５％、残Ｆａを成
分とするオーステナイト系Ｎｉ−Ｃｏ合金鋳鉄によする
特許請求の範囲第１項記載の回転工具。
（４）制振結合層は、引張せん断強さτｔ＝１０〜２０
ＭＰａ、硬化前の粘度ηが常温でη＝３０〜４０Ｐａ−
３，硬化物の横弾性率Ｇ ＝０．０５〜０．２ＧＰａ、
減衰係数ｃ＝３〜５ＭＰａ・Ｓ、接合層部分のばね定数
７Ｏ−１３０ＧＮ／ｍで構成されていることを特徴とす
る特許請求の範囲第１項記載の回転工具。
（５）制振結合層は、エポキシを主成分とするエポキシ
ポリアミド系接着剤であることを特徴とする特許請求の
範囲第１項記載の回転工具。
２、明細書の８頁、１７行目の「硬化時の体積収縮率３
０〜４０ＰａａＳｊを、
「硬化前の粘度 ３０〜４０Ｐａ−８硬
化時の体積収縮率 約２．４％ Ｊと訂正す
る。
以上FIG. 1 is a perspective view showing a first embodiment of the invention, FIG. 2 is a cross-sectional plan view of FIG. 1, FIG. 3 is a vertical cross-sectional side view showing a second embodiment of the invention, and FIG. is a cross-sectional plan view of FIG. 3, FIGS. 5 and 6 are side views showing different embodiments of the present invention, FIG. 7 is a characteristic diagram showing the relationship between cutting time and tool flank wear, and FIG. FIG. 8 is a characteristic diagram showing the relationship between cutting time and finished surface roughness Ra of various tools, and FIG. 9 is a characteristic diagram showing the removal speed of various tools with respect to cutting time. 1... Base part 2... Cutting edge part 3... Outer layer part 4... Inner layer part 5... Vibration damping coupling layer 3rd ShiJ Figure 5 Figure 6 Figure 7 Cu1lln9 ++rne min S CIJ Hing lime rnin 9th edition [1st World Proceedings Amendment Paper April 16, 1986 l Patent Office Commissioner Uga Michibu 11, Indication of the Case Patent Application No. 60150 No. 2 of 1988, Title of the Invention Rotary tool 4, Agent address: Iwatsuki Building, 6-7-16, Ginza, Chuo-ku, Tokyo 5, Date of amendment order: Voluntary 6, Number of inventions increased by amendment 07, Subject of amendment Details Claims column and Detailed description of the invention column 7-7 8. Contents of amendment
The description in the "Scope of Claims" column is corrected as follows. (Corrections are in Section 4) Note (1) In a rotary tool comprising a cutting edge portion and a base portion, the base portion is formed by dividing the base portion in the radial direction at a predetermined radius into an inner layer portion and an outer layer portion, and the inner layer portion A rotary tool characterized in that a vibration-damping coupling layer is interposed between the outer layer and the outer layer to couple the two. (2) The inner layer portion and the outer layer portion are prevented from rotating by a key groove and a key inserted into the key groove, and a vibration damping coupling layer is interposed between the key groove and the key. A rotary tool according to claim 1. (3) The inner layer part and the outer layer part have a C: 0.8 to 3.0.
%, Si: 1.0-3.0%, Ni; 25-40
%, Co; 4. O~6.0%1Mn; 0~2.0
%, S: O~1.0%, P: O~1.5%, and the rotating tool according to claim 1, which is made of an austenitic Ni-Co alloy cast iron containing residual Fa. (4) The vibration damping bonding layer has a tensile shear strength τt=10 to 20
MPa, viscosity η before curing is η = 30 to 40 Pa- at room temperature
3. Transverse elastic modulus G of cured product = 0.05 to 0.2 GPa,
The rotary tool according to claim 1, characterized in that the rotary tool has a damping coefficient c of 3 to 5 MPa·S and a spring constant of 70 to 130 GN/m in the bonding layer portion. (5) The rotary tool according to claim 1, wherein the vibration damping bonding layer is an epoxy polyamide adhesive containing epoxy as a main component. 2. "Volume shrinkage rate during curing 3" on page 8, line 17 of the specification
Correct 0 to 40 PaaSj to ``Viscosity before curing 30 to 40 Pa-8 Volume shrinkage rate during curing approximately 2.4% J.
Claims (5)
、上記ベース部を所定の半径で径方向に分割した内層部
と外層部とにより形成し、この内層部と外層部との間に
両者を結合する制振結合層を介在させたことを特徴とす
る回転工具。(1) In a rotary tool comprising a cutting edge portion and a base portion, the base portion is divided into an inner layer portion and an outer layer portion in the radial direction at a predetermined radius, and both the inner layer portion and the outer layer portion are separated. A rotary tool characterized in that a vibration-damping bonding layer is interposed between the two.
されるキーとによって回り止めされ、かつ上記キー溝と
キーとの間に制振結合層が介在されていることを特徴と
する特許請求の範囲第１項記載の回転工具。(2) The inner layer portion and the outer layer portion are prevented from rotating by a key groove and a key inserted into the key groove, and a vibration damping coupling layer is interposed between the key groove and the key. A rotary tool according to claim 1.
Ｓｉ；１．０〜３．０％、Ｎｉ；２５〜４０％、Ｃｏ；
４．０〜６．０％、Ｍｎ；０〜２．０％、Ｓ；０〜１．
０％、Ｐ；０〜１．５％、残Ｆｅを成分とするオーステ
ナイト系Ｎｉ−Ｃｏ合金鋳鉄によって形成した振動減衰
材料からなることを特徴とする特許請求の範囲第１項記
載の回転工具。(3) The inner layer part and the outer layer part are C; 0.8 to 3.0%,
Si; 1.0-3.0%, Ni; 25-40%, Co;
4.0-6.0%, Mn; 0-2.0%, S; 0-1.
The rotary tool according to claim 1, characterized in that the rotary tool is made of a vibration damping material made of austenitic Ni-Co alloy cast iron containing 0%, P: 0 to 1.5%, and residual Fe.
ＭＰａ、硬化前の粘度ηが常温でη＝３０〜４０Ｐａ・
Ｓ、硬化物の横弾性率Ｇ＝０．０５〜０．２ＧＰａ、減
衰係数ｃ＝３〜５ＭＰａ・Ｓ、接合層部分のばね定数７
０〜１３０ＧＮ／ｍで構成されていることを特徴とする
特許請求の範囲第１項記載の回転工具。(4) The vibration damping bonding layer has a tensile shear strength τtH10 to 20
MPa, viscosity η before curing is η = 30 to 40 Pa at room temperature
S, transverse elastic modulus of cured product G = 0.05 to 0.2 GPa, damping coefficient c = 3 to 5 MPa・S, spring constant of bonding layer portion 7
The rotary tool according to claim 1, characterized in that the rotary tool has a power of 0 to 130 GN/m.
ポリアミド系接着剤であることを特徴とする特許請求の
範囲第１項記載の回転工具。(5) The rotary tool according to claim 1, wherein the vibration damping bonding layer is an epoxy polyamide adhesive containing epoxy as a main component.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6015086A JPS62218044A (en) | 1986-03-18 | 1986-03-18 | Rotary tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6015086A JPS62218044A (en) | 1986-03-18 | 1986-03-18 | Rotary tool |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS62218044A true JPS62218044A (en) | 1987-09-25 |
| JPH0445291B2 JPH0445291B2 (en) | 1992-07-24 |
Family
ID=13133836
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6015086A Granted JPS62218044A (en) | 1986-03-18 | 1986-03-18 | Rotary tool |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62218044A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001505133A (en) * | 1996-07-08 | 2001-04-17 | サンドビック アクティエボラーグ（プブル） | Boring bar |
| US6929431B2 (en) * | 2000-12-06 | 2005-08-16 | Sandvik Ab | Vibration-dampened tool for working in metallic material |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110509084B (en) * | 2019-09-02 | 2020-06-09 | 中北大学 | Constant-strength cantilever beam type composite dynamic vibration reduction cutter bar |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023164U (en) * | 1973-06-27 | 1975-03-15 |
-
1986
- 1986-03-18 JP JP6015086A patent/JPS62218044A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5023164U (en) * | 1973-06-27 | 1975-03-15 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001505133A (en) * | 1996-07-08 | 2001-04-17 | サンドビック アクティエボラーグ（プブル） | Boring bar |
| US6929431B2 (en) * | 2000-12-06 | 2005-08-16 | Sandvik Ab | Vibration-dampened tool for working in metallic material |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0445291B2 (en) | 1992-07-24 |
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