JP3201036B2 - Positive throwaway tip - Google Patents

Positive throwaway tip

Info

Publication number
JP3201036B2
JP3201036B2 JP00543193A JP543193A JP3201036B2 JP 3201036 B2 JP3201036 B2 JP 3201036B2 JP 00543193 A JP00543193 A JP 00543193A JP 543193 A JP543193 A JP 543193A JP 3201036 B2 JP3201036 B2 JP 3201036B2
Authority
JP
Japan
Prior art keywords
cutting edge
chip
positive
tip
flank
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 - Fee Related
Application number
JP00543193A
Other languages
Japanese (ja)
Other versions
JPH06210510A (en
Inventor
辰夫 新井
貴宣 斉藤
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.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP00543193A priority Critical patent/JP3201036B2/en
Publication of JPH06210510A publication Critical patent/JPH06210510A/en
Application granted granted Critical
Publication of JP3201036B2 publication Critical patent/JP3201036B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/02—Milling-cutters characterised by the shape of the cutter
    • B23C5/10—Shank-type cutters, i.e. with an integral shaft
    • B23C5/109—Shank-type cutters, i.e. with an integral shaft with removable cutting inserts
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C5/00—Milling-cutters
    • B23C5/16—Milling-cutters characterised by physical features other than shape
    • B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
    • B23C5/22—Securing arrangements for bits or teeth or cutting inserts
    • B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
    • B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts 
    • B23C5/2213—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts  having a special shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/08—Rake or top surfaces
    • B23C2200/083—Rake or top surfaces curved
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/08—Rake or top surfaces
    • B23C2200/085—Rake or top surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/20—Top or side views of the cutting edge
    • B23C2200/203—Curved cutting edges
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/20—Top or side views of the cutting edge
    • B23C2200/205—Discontinuous cutting edges

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Milling Processes (AREA)

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【０００１】[0001]

【産業上の利用分野】この発明は、エンドミル等のスロ
ーアウェイ式転削工具（以下「転削工具」という。）に
用いられるポジティブスローアウェイチップ（以下「チ
ップ」という。）に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a positive indexable insert (hereinafter referred to as "tip") used for a throw-away type milling tool (hereinafter referred to as "milling tool") such as an end mill.

【０００２】[0002]

【従来の技術及びその課題】図１７乃至図１９は、従来
のチップが装着された転削工具を示すものであり、図
中、符号２は工具本体を示している。この工具本体２
は、基端部がエンドミル等の駆動源に軸線Ｘ回りに回転
自在に保持される略円柱状のもので、その先端側外周部
には、その一部分が外周に向けて大きく取り除かれてな
るチップポケット４と、工具本体２の回転方向を向くチ
ップ取付面６とが形成されている。そして、チップ取付
面６にはチップ取付座８が形成され、このチップ取付座
８にチップ１０が着脱自在に取り付けられている。2. Description of the Related Art FIGS. 17 to 19 show a conventional milling tool on which a chip is mounted. In the drawings, reference numeral 2 denotes a tool body. This tool body 2
Is a substantially cylindrical shape whose base end is rotatably held around an axis X by a driving source such as an end mill, and a tip whose outer peripheral portion is largely removed toward the outer periphery. A pocket 4 and a chip mounting surface 6 facing the rotation direction of the tool body 2 are formed. A chip mounting seat 8 is formed on the chip mounting surface 6, and a chip 10 is detachably mounted on the chip mounting seat 8.

【０００３】上記チップ１０は、図２０乃至図２２に示
すように、外観が略菱形平板状に形成されたものであ
り、その下面（着座面）１２を平坦面とされ、また、そ
の上面１４をすくい面とされる。そして、上面１４と側
面１６との稜辺部には、凸曲線状の主切刃１８が形成さ
れている。このような従来のチップでは、上面１４を凸
曲面とすることによって刃先角が大きく確保されている
ため刃先強度に優れ、主として被削材が鋼の場合などの
重切削に好適とされている。[0003] As shown in FIGS. 20 to 22, the chip 10 has a substantially rhombic flat plate appearance, and its lower surface (seating surface) 12 has a flat surface and its upper surface 14 has a flat surface. Is a rake face. A convex curved main cutting edge 18 is formed on a ridge between the upper surface 14 and the side surface 16. In such a conventional tip, the upper surface 14 has a convex curved surface to secure a large edge angle, so that the edge is excellent in edge strength, and is suitable for heavy cutting mainly when the work material is steel.

【０００４】しかしながら、上記チップを用いてアルミ
ニウムなどの軟質かつ低融点の材料を切削しようとする
場合、前述のような切刃強度についての要求はさほど大
きくなく、むしろ、刃先角が大きいために良好な切れ味
が得られないことや、アルミニウム等が連続切屑となり
やすく、切屑排出性が悪くなって溶着しやすいことなど
が問題となる。このような問題に対して、工具本体のチ
ップ取付座を傾斜させることによって軸方向すくい角を
大きくして切れ味を向上させることが考えられるが、工
具本体におけるチップ取付座の奥側の部分の肉厚が工具
本体の基端側へ向かって次第に薄くなるため、工具本体
の強度を犠牲にせざるを得ないという問題がある。However, in the case of cutting a soft and low melting point material such as aluminum using the above-mentioned tip, the demand for the cutting edge strength as described above is not so large, but rather, because the edge angle is large, it is favorable. There are problems in that sharpness cannot be obtained, and that aluminum and the like are liable to be turned into continuous chips, chip discharge is poor, and welding is easy. To solve such a problem, it is conceivable to increase the axial rake angle by inclining the tip mounting seat of the tool body to improve sharpness. Since the thickness gradually decreases toward the base end of the tool body, there is a problem that the strength of the tool body must be sacrificed.

【０００５】本発明は、上記の如き事情に鑑みてなされ
たもので、アルミニウムのような軟質材料に対しても良
好な切れ味及び切屑排出性を得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 circumstances, and has as its object to obtain good sharpness and chip dischargeability even for a soft material such as aluminum.

【０００６】[0006]

【課題を解決するための手段】本発明は、多角形平板状
をなすとともに、下面を平坦面とされ、この下面を工具
本体に形成されたチップ座に当接させて着脱可能に取り
付けられるチップにおいて、ブレーカが形成されるとと
もにすくい面とされる上面と逃げ面とされる側面との稜
辺部に主切刃が形成されており、前記逃げ面は、連続す
る複数の構成平面によって多段面状に形成され、前記主
切刃は、前記下面に向かって所定角度で傾斜する第１切
刃と、この第１切刃に連続する少なくとも一つ以上の直
線状の切刃とから構成されるとともに、この直線状の切
刃のうち、少なくとも一つは前記下面と平行に形成さ
れ、かつ、前記逃げ面を形成する複数の構成平面のうち
の一つは、前記下面の一辺の全長に接続されているとと
もに、前記上面との稜辺部に前記直線状の切刃が形成さ
れていることを特徴とする。前記主切刃は、前記下面の
法線方向視において、一直線状に形成されていてもよ
く、また、前記下面の法線方向視において、前記第１切
刃をこの第１切刃に連なる切刃に対してチップ内側に傾
斜させて形成された構成であってもよい。また、前記主
切刃の前記第１切刃の先端部には、前記逃げ面に対して
略直交する方向に延びる直線状の副切刃が形成されてい
てもよく、この副切刃を、前記下面に対して平行に形成
してもよい。また、前記主切刃の前記第１切刃の逃げ角
に対して、この第１切刃に連なる前記各切刃の逃げ角が
増加する構成としてもよい。According to the present invention, there is provided a chip which is formed in a polygonal flat plate shape, has a flat lower surface, and is detachably mounted by bringing the lower surface into contact with a chip seat formed on a tool body. A main cutting edge is formed at a ridge portion between an upper surface that is a rake surface and a side surface that is a flank, where the breaker is formed, and the flank is a multi-step surface formed by a plurality of continuous constituent planes. The main cutting edge is formed of a first cutting edge inclined at a predetermined angle toward the lower surface, and at least one or more linear cutting edges continuous with the first cutting edge. With this straight cut
At least one of the blades is formed parallel to the lower surface.
And among a plurality of constituent planes forming the flank,
Is connected to the entire length of one side of the lower surface.
In addition, the straight cutting edge is formed on a ridge portion with the upper surface.
It is characterized by having been done. The main cutting edge may be formed in a straight line when viewed in the normal direction of the lower surface, and may be formed by cutting the first cutting edge to the first cutting edge when viewed in the normal direction of the lower surface. A configuration in which the blade is formed to be inclined inward of the chip with respect to the blade may be used . Further, a linear sub-cutting edge extending in a direction substantially perpendicular to the flank may be formed at a tip end of the first cutting edge of the main cutting edge. It may be formed parallel to the lower surface. Further, the relief angle of each of the cutting edges connected to the first cutting edge may be increased with respect to the clearance angle of the first cutting edge of the main cutting edge.

【０００７】[0007]

【作用】上記構成によれば、主切刃に連なる逃げ面が多
段面に形成され、チップの刃先角を工具本体の先端側か
ら基端側へ段階的に適宜変化させることができるで、主
切刃の各部分に必要な刃先強度を確保しつつ切れ味の向
上を図ることができ、また、切屑の排出性を向上させて
切削抵抗を減少させることができる。According to the above construction, the flank connected to the main cutting edge is formed in a multi-stepped surface, and the bevel angle of the tip can be appropriately changed stepwise from the distal end side to the proximal end side of the tool body. The sharpness can be improved while securing the required cutting edge strength for each part of the cutting blade, and the cutting resistance can be reduced by improving the chip dischargeability.

【０００８】[0008]

【実施例】以下、添付図面を参照して本発明の実施例を
説明する。まず図７及び図８を参照して、一実施例に係
るチップを転削工具へ装着した状態について説明する。
これらの図において、符号２０は一実施例に係るチッ
プ、符号２２はエンドミルの工具本体である。但し、工
具本体２２については図示を簡略化している。Embodiments of the present invention will be described below with reference to the accompanying drawings. First, a state in which a tip according to one embodiment is mounted on a milling tool will be described with reference to FIGS. 7 and 8.
In these figures, reference numeral 20 denotes a chip according to one embodiment, and reference numeral 22 denotes a tool body of an end mill. However, the illustration of the tool body 22 is simplified.

【０００９】チップ２０は、その下面（着座面を）２４
を平坦面とされており、該下面２４を工具本体２２に形
成されたチップ取付座２６に密着させた状態で、図示し
ない取付ねじによって着脱可能に取付られている。この
状態において、工具本体２２の軸線Ｘは、下面２４と平
行な状態にある。また、チップ２０に形成された後述す
る主切刃は、その先端部を工具本体２２の径方向外側及
び軸線Ｘ方向先端側に突出させており、ｋ1の心上がり
量が付与されている（図８）。The chip 20 has a lower surface (seating surface) 24
Are flat surfaces, and the lower surface 24 is detachably mounted by a mounting screw (not shown) in a state where the lower surface 24 is in close contact with a chip mounting seat 26 formed on the tool body 22. In this state, the axis X of the tool main body 22 is parallel to the lower surface 24. A main cutting edge, which will be described later, formed on the tip 20 has its tip protruding radially outward of the tool main body 22 and tipping side in the axial line X direction, and is provided with a center rise amount of k1 (FIG. 8).

【００１０】次に、図１乃至図６を参照してチップ２０
の形状について説明する。チップ２０は、外観菱形平板
状を呈し、下面２４と、上面２８と、これらに対して傾
斜した側面３０，３２とから構成された基本形状をなし
ている。また、チップ２０のの中心部にはチップ取付穴
３４が形成されている。Next, referring to FIG. 1 to FIG.
Will be described. The chip 20 has a rhombic flat plate appearance, and has a basic shape including a lower surface 24, an upper surface 28, and side surfaces 30, 32 inclined with respect to these surfaces. A chip mounting hole 34 is formed in the center of the chip 20.

【００１１】上面２８は、稜線３６を境にして、下面２
４に平行な平坦面３８と、この両側に接続し、上方に向
けて傾斜する平坦面４０（図３参照）とから構成されて
おり、前記稜線３６を境に形成された角付部４２をブレ
ーカとしている。そして、上面２８はすくい面とされる
とともに、この上面２８と側面３０との稜辺部に主切刃
４４が形成されている。The upper surface 28 is separated from the lower surface 2 by a ridge 36.
4 and a flat surface 40 connected to both sides of the flat surface 38 and inclined upward (see FIG. 3). Has a breaker. The upper surface 28 is a rake face, and a main cutting edge 44 is formed on a ridge between the upper surface 28 and the side surface 30.

【００１２】工具本体２２の径方向外方に露出する側の
側面（逃げ面）３０は、下面２４に接続する平面４６
と、この平面４６に連続する平面４８とから構成されて
おり、平面４８と平面４０との稜辺部（ＡＢ間部分）が
第１切刃４４ａとされ、平面４６と平面３８との稜辺部
（ＢＣ間部分）が第２切刃４４ｂとされている。これら
第１切刃４４ａ及び第２切刃４４ｂは、下面２４の法線
方向視において、図１に示すように一直線をなし、ま
た、側面３０側から視て、図２に示すように第１切刃４
４ａが上方に向けて傾斜した形状とされている。A side surface (flank surface) 30 of the tool body 22 on a side exposed to the outside in the radial direction is a flat surface 46 connected to the lower surface 24.
And a plane 48 that is continuous with the plane 46. A ridge (a section between AB) between the plane 48 and the plane 40 is a first cutting edge 44a, and a ridge between the plane 46 and the plane 38. The portion (the portion between BC) is the second cutting edge 44b. The first cutting edge 44a and the second cutting edge 44b form a straight line as shown in FIG. 1 when viewed in the normal direction of the lower surface 24. Further, as shown in FIG. Cutting blade 4
4a has a shape inclined upward.

【００１３】また、第１切刃４４ａに連なる逃げ面４８
のなす第１逃げ角α1（図４参照）は、第２切刃４４ｂ
に連なる逃げ面４６のなす第２逃げ角α2（図３参照）
より小さく形成されている。そして、上記形状をなすチ
ップ２０の主切刃４４の刃先角は、第２切刃側に比べて
第１切刃側がよりポジとなる。A flank 48 connected to the first cutting edge 44a is provided.
The first clearance angle α1 (see FIG. 4) is determined by the second cutting edge 44b.
The second clearance angle α2 formed by the flank surface 46 which is continuous with (see FIG. 3)
It is formed smaller. The tip angle of the main cutting edge 44 of the tip 20 having the above shape is more positive on the first cutting edge side than on the second cutting edge side.

【００１４】以上のように構成されたチップ２０は、図
７及び図８に示すように工具本体２２に取り付けられて
エンドミルとして使用される。このエンドミルによって
被削材Ｗを切削加工してゆくと、被削材Ｗの切削形状
は、図９に示すようになる。即ち、工具軸線Ｘに平行と
された第２切刃４４ｂによる切削面Ｓ1は、長さＬ1の区
間に渡って断面直線状となり、第１切刃４４ａによる切
削面Ｓ2は、切削面Ｓ1より径方向外側に窪んだ凸曲面と
なる。このように、逃げ面３０を多段面状とし、チップ
２０の主切刃４４の形状を種々に変更することにより、
被削材Ｗの切削面形状を変更し、立壁精度を向上させる
ことができる。例えば、主切刃を三分割すれば、切削面
形状も三段となり、各区間の形状を種々に設定できる。
また、逃げ面の形状に応じて刃先角度を変えることもで
きるから、主切刃の各部分に必要な刃先強度を確保して
切れ味を向上させることができる。The tip 20 configured as described above is mounted on a tool body 22 as shown in FIGS. 7 and 8, and is used as an end mill. When the work material W is cut by the end mill, the cut shape of the work material W is as shown in FIG. That is, the cutting surface S1 formed by the second cutting edge 44b parallel to the tool axis X is linear in cross section over the section of the length L1, and the cutting surface S2 formed by the first cutting edge 44a is larger in diameter than the cutting surface S1. It becomes a convex curved surface depressed outward in the direction. As described above, by making the flank 30 a multi-step surface and changing the shape of the main cutting edge 44 of the tip 20 in various ways,
By changing the shape of the cut surface of the work material W, it is possible to improve the standing wall accuracy. For example, if the main cutting edge is divided into three, the cutting surface shape will also be three steps, and the shape of each section can be set variously.
Further, since the cutting edge angle can be changed according to the shape of the flank, the cutting edge strength required for each part of the main cutting edge can be secured and the sharpness can be improved.

【００１５】また、チップ形状を図１０乃至図１４に示
すような形状としてもよい。同図に示すチップは、前述
の図１乃至図６に示すチップ形状に変更を加えたもので
あり、同一の構成要素には同一の符号を付してその説明
を省略する。これらの図に示すチップが前述の図１乃至
図６に示すチップと異なる点は、主切刃４４の先端部に
形成された副切刃５０及び主切刃４４の形状である。Further, the tip may be shaped as shown in FIGS. The chip shown in the figure is a modification of the chip shape shown in FIGS. 1 to 6 described above, and the same components are denoted by the same reference numerals and description thereof will be omitted. The difference between the tips shown in these figures and the tips shown in FIGS. 1 to 6 is the shape of the sub-cutting edge 50 and the main cutting edge 44 formed at the tip of the main cutting edge 44.

【００１６】副切刃５０は、第１切刃４４ａに対して略
直交する方向に直線状に延び、且つ下面２４に対して平
行に形成されている。また、主切刃４４は、図１０に示
すように、下面２４の法線方向視において、第１切刃４
４ａが第２切刃４４ｂに対して角度θだけチップ内側に
傾斜して形成されている。The sub cutting edge 50 extends linearly in a direction substantially perpendicular to the first cutting edge 44a, and is formed parallel to the lower surface 24. Further, as shown in FIG. 10, the main cutting edge 44 has the first cutting edge 4
4a is formed to be inclined inward of the chip by an angle θ with respect to the second cutting edge 44b.

【００１７】上記のようなチップを図１５及び図１６に
示すように取り付けて切削する場合、第１切刃４４ａに
よる被削材Ｗの切削面は、図９に仮想線で示すＳ3とな
る。従って、切削用途に応じて前記角度θを種々の値に
変更することにより、切削面Ｓ3の径方向の突き出し
量、ぬすみ量を所望の状態とすることができる。また、
副切刃５０によって底面の仕上げ精度を向上させること
ができる。When the above-described chip is mounted and cut as shown in FIGS. 15 and 16, the cut surface of the work material W by the first cutting edge 44a is S3 shown by a virtual line in FIG. Therefore, by changing the angle θ to various values in accordance with the cutting application, it is possible to set the radially protruding amount and the slack amount of the cutting surface S3 to desired states. Also,
The sub cutting edge 50 can improve the finishing accuracy of the bottom surface.

【００１８】[0018]

【発明の効果】以上説明したように、本発明は、多角形
平板状をなすとともに、下面を平坦面とされ、この下面
を工具本体に形成されたチップ座に当接させて着脱可能
に取り付けられるチップにおいて、ブレーカが形成され
るとともにすくい面とされる上面と逃げ面とされる側面
との稜辺部に主切刃が形成されており、前記逃げ面は、
連続する複数の構成平面によって多段面状に形成され、
前記主切刃は、前記下面に向かって所定角度で傾斜する
第１切刃と、この第１切刃に連続する少なくとも一つ以
上の直線状の切刃とから構成されるものであるので、主
切刃の各部分に必要な刃先強度を確保しつつ切れ味の向
上を図ることができ、また、切屑の排出性を向上させて
切削抵抗を減少させることができる。As described above, the present invention has the shape of a polygonal flat plate, the lower surface of which is flat, and the lower surface of which is detachably attached to the tip seat formed on the tool body. In the chip to be formed, a main cutting edge is formed at a ridge portion of an upper surface to be a rake surface and a side surface to be a flank with a breaker formed, and the flank is
It is formed in a multi-stage shape by a plurality of continuous constituent planes,
Since the main cutting edge is configured by a first cutting edge inclined at a predetermined angle toward the lower surface, and at least one or more linear cutting edges continuous with the first cutting edge, The sharpness can be improved while ensuring the required edge strength of each part of the main cutting edge, and the cutting resistance can be reduced by improving the chip dischargeability.

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

【図１】本発明の一実施例に係るチップを示す平面図で
ある。FIG. 1 is a plan view showing a chip according to one embodiment of the present invention.

【図２】図１のチップのII方向からの矢視図である。FIG. 2 is a view of the chip of FIG. 1 as viewed from an arrow II.

【図３】図１のチップのIII方向からの矢視図である。FIG. 3 is a view of the chip of FIG.

【図４】図２のIV方向からの矢視図である。FIG. 4 is a view as viewed from an arrow IV in FIG. 2;

【図５】図１のチップのＶ方向からの矢視図である。FIG. 5 is a view of the chip of FIG.

【図６】図１のチップのVI方向からの矢視図である。FIG. 6 is a view of the chip of FIG. 1 as seen from the direction of arrow VI.

【図７】図１乃至図６に示すチップの転削工具への装着
状態を示す側面図である。FIG. 7 is a side view showing a state where the insert shown in FIGS. 1 to 6 is mounted on a milling tool.

【図８】図７のVIII方向からの矢視図である。8 is a view as seen from the direction of arrow VIII in FIG. 7;

【図９】被削材の切削状態を示す図である。FIG. 9 is a diagram showing a cutting state of a work material.

【図１０】本発明の他の実施例に係るチップを示す平面
図である。FIG. 10 is a plan view showing a chip according to another embodiment of the present invention.

【図１１】図１０のチップのＸＩ方向からの矢視図であ
る。FIG. 11 is a view of the chip of FIG.

【図１２】図１０のチップのＸII方向からの矢視図であ
る。12 is a view of the chip of FIG. 10 as seen from the direction of the arrow XII.

【図１３】図１０のチップのＸIII方向からの矢視図で
ある。13 is a view of the chip of FIG. 10 as viewed from the direction of the arrow XIII.

【図１４】図１０のチップのＸIV方向からの矢視図であ
る。14 is a view of the chip of FIG. 10 as viewed from the direction of the arrow XIV.

【図１５】図１０乃至図１４に示すチップの転削工具へ
の装着状態を示す図である。FIG. 15 is a diagram showing a state in which the insert shown in FIGS. 10 to 14 is mounted on a milling tool.

【図１６】図１５のＸVI方向からの矢視図である。16 is a view as seen from the direction of the arrow XVI in FIG. 15;

【図１７】従来のチップが装着された転削工具を示す側
面図である。FIG. 17 is a side view showing a conventional milling tool on which a chip is mounted.

【図１８】同転削工具の側面図である。FIG. 18 is a side view of the milling tool.

【図１９】同転削工具の正面図である。FIG. 19 is a front view of the milling tool.

【図２０】従来のチップを示す平面図である。FIG. 20 is a plan view showing a conventional chip.

【図２１】図２０のチップのＸＸＩ方向からの矢視図で
ある。FIG. 21 is a view of the chip of FIG. 20 as seen from the XXI direction.

【図２２】図２０のチップのＸＸII方向からの矢視図で
ある。FIG. 22 is a view of the chip of FIG. 20 as viewed from the direction XXII.

【符号の説明】[Explanation of symbols]

２４ 下面 ２８ 上面（すくい面） ３０ 側面（逃げ面） ４２ ブレーカ ４４ 主切刃 ４４ａ 第１切刃 ５０ 副切刃 24 Lower surface 28 Upper surface (rake face) 30 Side face (flank face) 42 Breaker 44 Main cutting edge 44a First cutting edge 50 Secondary cutting edge

───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 昭63−260715（ＪＰ，Ａ) 特開 平２−298415（ＪＰ，Ａ) 実開 昭62−7318（ＪＰ，Ｕ) (58)調査した分野(Int.Cl.7，ＤＢ名) B23C 5/20 B23C 5/10 B23C 5/06 ──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-63-260715 (JP, A) JP-A-2-298415 (JP, A) JP-A 62-7318 (JP, U) (58) Field (Int.Cl. 7 , DB name) B23C 5/20 B23C 5/10 B23C 5/06

Claims (6)

(57)【特許請求の範囲】(57) [Claims] 【請求項１】多角形平板状をなすとともに、下面を平坦
面とされ、この下面を工具本体に形成されたチップ座に
当接させて着脱可能に取り付けられるポジティブスロー
アウェイチップにおいて、 ブレーカが形成されるとともにすくい面とされる上面と
逃げ面とされる側面との稜辺部に主切刃が形成されてお
り、 前記逃げ面は、連続する複数の構成平面によって多段面
状に形成され、 前記主切刃は、前記下面に向かって所定角度で傾斜する
第１切刃と、この第１切刃に連続する少なくとも一つ以
上の直線状の切刃とから構成されるとともに、この直線
状の切刃のうち、少なくとも一つは前記下面と平行に形
成され、 かつ、前記逃げ面を形成する複数の構成平面のうちの一
つは、前記下面の一辺の全長に接続されているととも
に、前記上面との稜辺部に前記直線状の切刃が形成され
ている ことを特徴とするポジティブスローアウェイチッ
プ。1. A positive indexable insert having a polygonal flat plate shape, a lower surface being a flat surface, and a lower surface abutting against a chip seat formed on a tool body and being detachably mounted to form a breaker. A main cutting edge is formed at a ridge portion between the upper surface which is a rake surface and a side surface which is a flank, and the flank is formed in a multi-step shape by a plurality of continuous constituent planes, It said main cutting edge, a first cutting edge that is inclined at a predetermined angle toward the bottom surface, with consists of the at least one straight cutting edge continuous to the first cutting edge, the straight line
At least one of the cutting edges is shaped parallel to the lower surface.
And one of a plurality of constituent planes forming the flank surface.
Is connected to the entire length of one side of the lower surface.
Wherein the straight cutting edge is formed at a ridge portion with the upper surface.
Positive throw-away tip, characterized in that is. 【請求項２】前記主切刃は、前記下面の法線方向視にお
いて、一直線状に形成されたことを特徴とする請求項１
記載のポジティブスローアウェイチップ。2. The apparatus according to claim 1, wherein the main cutting edge is formed in a straight line when viewed from a normal direction of the lower surface.
Positive throwaway tip as described. 【請求項３】前記主切刃は、前記下面の法線方向視にお
いて、前記第１切刃をこの第１切刃に連なる切刃に対し
てチップ内側に傾斜させて形成されたことを特徴とする
請求項１記載のポジティブスローアウェイチップ。3. The main cutting edge is formed by inclining the first cutting edge to the inside of a chip with respect to a cutting edge connected to the first cutting edge when viewed in a normal direction of the lower surface. The positive throwaway tip according to claim 1, wherein 【請求項４】前記主切刃の前記第１切刃の先端部には、
前記逃げ面に対して略直交する方向に延びる直線状の副
切刃が形成されていることを特徴とする請求項１、２又
は３記載のポジティブスローアウェイチップ。4. The tip of the first cutting edge of the main cutting edge,
According to claim 1, characterized in that the straight sub-cutting edge extending in a direction substantially perpendicular to the relief surface is formed also
Is a positive throwaway tip described in 3 . 【請求項５】前記副切刃は、前記下面に対して平行に形
成されていることを特徴とする請求項４記載のポジティ
ブスローアウェイチップ。5. The positive indexable insert according to claim 4 , wherein said secondary cutting edge is formed parallel to said lower surface. 【請求項６】前記主切刃の前記第１切刃の逃げ角に対し
て、この第１切刃に連なる前記各切刃の逃げ角が増加す
ることを特徴とする請求項１、２、３、４又は５記載の
ポジティブスローアウェイチップ。6. The relief angle of each of the cutting edges connected to the first cutting edge increases with respect to the clearance angle of the first cutting edge of the main cutting edge . The positive throwaway tip according to 3, 4 or 5 .
JP00543193A 1993-01-14 1993-01-14 Positive throwaway tip Expired - Fee Related JP3201036B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP00543193A JP3201036B2 (en) 1993-01-14 1993-01-14 Positive throwaway tip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP00543193A JP3201036B2 (en) 1993-01-14 1993-01-14 Positive throwaway tip

Publications (2)

Publication Number Publication Date
JPH06210510A JPH06210510A (en) 1994-08-02
JP3201036B2 true JP3201036B2 (en) 2001-08-20

Family

ID=11611007

Family Applications (1)

Application Number Title Priority Date Filing Date
JP00543193A Expired - Fee Related JP3201036B2 (en) 1993-01-14 1993-01-14 Positive throwaway tip

Country Status (1)

Country Link
JP (1) JP3201036B2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2003019617A (en) * 2001-07-09 2003-01-21 Daishowa Seiki Co Ltd Insert for cutting tool, and cutting tool
DE102012104082A1 (en) * 2012-05-09 2013-11-14 Walter Ag Indexable insert for shoulder cutters

Also Published As

Publication number Publication date
JPH06210510A (en) 1994-08-02

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