JP2015027732A - Blank insert, insert using the same, and cutter - Google Patents

Blank insert, insert using the same, and cutter Download PDF

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Publication number
JP2015027732A
JP2015027732A JP2014208369A JP2014208369A JP2015027732A JP 2015027732 A JP2015027732 A JP 2015027732A JP 2014208369 A JP2014208369 A JP 2014208369A JP 2014208369 A JP2014208369 A JP 2014208369A JP 2015027732 A JP2015027732 A JP 2015027732A
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Prior art keywords
insert
central notch
cutter
opposing side
side surfaces
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ユンワ ヨン
Hyun-Hwa Jeong
ユンワ ヨン
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Taegutec Ltd
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Taegutec Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C3/00—Milling particular work; Special milling operations; Machines therefor
    • B23C3/002—Milling elongated workpieces
    • B23C3/005—Rails
    • 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
    • B23C5/12—Cutters specially designed for producing particular profiles
    • 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
    • B23C5/202—Plate-like cutting inserts with special form
    • 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
    • B23C2200/16—Supporting or bottom surfaces
    • B23C2200/164—Supporting or bottom surfaces discontinuous
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2200/00—Details of milling cutting inserts
    • B23C2200/16—Supporting or bottom surfaces
    • B23C2200/165—Supporting or bottom surfaces with one or more grooves
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C2210/00—Details of milling cutters
    • B23C2210/16—Fixation of inserts or cutting bits in the tool
    • B23C2210/168—Seats for cutting inserts, supports for replacable cutting bits

Abstract

PROBLEM TO BE SOLVED: To provide an insert that makes cutting processing of an insert which has cutting blades having various slopes easier, saves a material to be worn out, and whose durability is improved.SOLUTION: The insert according to the present invention has a top surface and a bottom surface connected by four side panels, and a through hole extended between the top surface and the bottom surface. Each of the top surface and the bottom surface includes both raised parts and a central notch part, the raised parts are continuously connected to two opposing side panels, extended along the entire length of the two opposing side panels, and their top surfaces include a concave or convex curved surface in which slope is created along the two opposing side panels, and the central notch part is formed as a flat surface between the raised parts. In the insert according to the present invention, volume removed during cutting is smaller than a conventional insert, so that a material is saved, a cutting work is significantly lightened, and use-life improves.

Description

本発明は、特別な形状を有するブランクインサート、これを用いて加工したインサート及びそのインサートを装着したカッタに関する。このようなインサートは特にレール加工用のカッタとして多く使用され、従来のインサートよりさらに多くの切削刃数を提供することで使用寿命を増加させ、インサートの生産コストを低減することができる。 The present invention relates to a blank insert having a special shape, an insert processed using the same, and a cutter equipped with the insert. Such inserts are often used particularly as cutters for rail machining, and by providing more cutting blades than conventional inserts, the service life can be increased and the production cost of the inserts can be reduced.

レール加工用のカッタは加工しようとするレール固有の形状に合わせて様々な形状を有し、また、そのため様々な形態のインサートが必要になる。図１及び図２は様々な種類のインサートが特定の配列で装着されたカッタによってレールの特定部位を加工する状況を示す。このようなカッタに装着されるインサートは様々な凸状又は凹状の勾配がつけられた切削刃が必要になるため、一般に正方形のネガティブブランクを用いて研削することで所望のインサートを形成するようになる。   The cutter for rail processing has various shapes according to the shape unique to the rail to be processed, and therefore, various types of inserts are required. 1 and 2 show a situation where a specific part of a rail is processed by a cutter in which various types of inserts are mounted in a specific arrangement. Inserts mounted on such cutters require cutting blades with various convex or concave slopes, so that the desired insert is generally formed by grinding with a square negative blank. Become.

しかし、カッタに形成された複数のインサートポケットに様々な形状に研削されたインサートが装着されても、カッタの互いに異なる各インサートポケットをインサートの研削された切削刃の曲面に合わせて異なるように形成することは非常に非経済的である。したがって、従来は図３に示すようにインサートの上面のみを研削して下面は平坦に維持し、インサートの下面を平坦面に形成して同じ形状を有するポケットの平坦な底壁と接触させていた。このように上面のみが研削される場合、一つのインサートに二つの切削刃しか提供できない。また、図１，図２，及び図３に示すような円周方向のインサート（ｔａｎｇｅｎｔｉａｌ ｉｎｓｅｒｔ）は半径方向のインサート（ｒａｄｉａｌ ｉｎｓｅｒｔ）に比べて研削時に除去される体積が大きいため多くの研削費用が多くかかる。   However, even if inserts ground in various shapes are attached to multiple insert pockets formed in the cutter, each insert pocket of the cutter is formed differently to match the curved surface of the ground cutting blade of the insert It is very uneconomical to do. Therefore, conventionally, as shown in FIG. 3, only the upper surface of the insert is ground and the lower surface is kept flat, and the lower surface of the insert is formed on the flat surface to be in contact with the flat bottom wall of the pocket having the same shape. . Thus, when only the upper surface is ground, only two cutting blades can be provided for one insert. In addition, circumferential inserts as shown in FIGS. 1, 2, and 3 have a larger volume to be removed at the time of grinding than radial inserts, resulting in a large grinding cost. It takes a lot.

本発明は、様々な勾配を有する切削刃を有するインサートの研削加工をより容易にし、消耗される材料を節約し、耐久性が向上したインサートを提供することを目的とする。また、本発明は、様々な勾配を有する切削刃を有するインサートに対して安定した装着を可能にするポケット構造を有するカッタを提供することを他の目的とする。   It is an object of the present invention to provide an insert with improved durability, which makes it easier to grind inserts having cutting blades with various gradients, saves consumable material. Another object of the present invention is to provide a cutter having a pocket structure that enables stable attachment to an insert having a cutting blade having various slopes.

本発明の実施例によるブランクインサートは、４つの側面によって連結される上面及び下面を有し、上面と下面の間に延長される貫通孔を有し、前記上面と下面のそれぞれは両隆起部と中央ノッチ部を含み、前記両隆起部は上面が平坦で、対向する二つの側面に連接し、前記二つの側面の全体の長さに沿って延長され、前記中央ノッチ部は前記両隆起部の間の平坦面として形成される。   A blank insert according to an embodiment of the present invention has an upper surface and a lower surface connected by four side surfaces, and has a through-hole extending between the upper surface and the lower surface, and each of the upper surface and the lower surface has both raised portions. A central notch, the ridges having a flat upper surface, connected to two opposing side surfaces, and extending along the entire length of the two side surfaces; It is formed as a flat surface between.

本発明の実施例によるインサートは、４つの側面によって連結される上面及び下面を有し、上面と下面の間に延長される貫通孔を有し、前記上面と下面のそれぞれは両隆起部と中央ノッチ部を含み、前記両隆起部は二つの対向側面に連接し、前記二つの対向側面の全体の長さに沿って延長され、その上面は前記二つの対向側面に沿って勾配がつけられた凹状または凸状の曲面を含み、前記中央ノッチ部は前記両隆起部の間の平坦面として形成される。
前記中央ノッチ部は前記隆起部から段差を有しつつ陥没するように形成され得る。
本発明の実施例によるインサートが装着されるカッタは、インサートポケットがインサートの側面が支持される二つの側壁とインサートの下面が支持される一つの底壁とを備え、前記底壁は前記インサートの下面の中央ノッチ部に対応する平坦な形状の突出接触部と前記インサートの両隆起部を収容する陥没された収容部とを有する。 An insert according to an embodiment of the present invention has an upper surface and a lower surface connected by four side surfaces, and has a through hole extending between the upper surface and the lower surface. Including both notches, the ridges being connected to two opposing sides, extending along the entire length of the two opposing sides, the top surface being beveled along the two opposing sides A concave or convex curved surface is included, and the central notch portion is formed as a flat surface between the raised portions.
The central notch part may be formed to be depressed with a step from the raised part.
A cutter to which an insert according to an embodiment of the present invention is mounted includes an insert pocket having two side walls on which a side surface of the insert is supported and a bottom wall on which a lower surface of the insert is supported. It has a flat protruding contact portion corresponding to the central notch portion of the lower surface and a recessed receiving portion for receiving both raised portions of the insert.

本発明によるインサートは、従来のインサートに比べて研削中に除去される体積が小さいので原料が節約され研削作業が著しく軽減される。また、本発明による前記インサートは下面も上面と同じ構造を有して４つの曲線切削刃が提供されるのでその分使用寿命が向上する。
本発明によるカッタポケットは、インサートとの面接触により十分な半径方向の支持力を提供するとともに、様々な勾配を有する切削刃を有するインサートを装着できる。 The insert according to the invention has a smaller volume removed during grinding than conventional inserts, thus saving raw materials and significantly reducing the grinding operation. In addition, the insert according to the present invention has the same structure as the upper surface on the lower surface, and four curved cutting blades are provided.
The cutter pocket according to the present invention provides sufficient radial support by surface contact with the insert and can be fitted with inserts having cutting blades with various slopes.

様々な種類のインサートが装着されたカッタによるレールの加工状況を示する斜視図である。It is a perspective view which shows the processing condition of the rail by the cutter with which various kinds of inserts were mounted. 様々な種類のインサートが装着されたカッタによるレールの加工状況を示する斜視図である。It is a perspective view which shows the processing condition of the rail by the cutter with which various kinds of inserts were mounted. 従来のブランクインサートとそれを研削したインサートを示す斜視図である。It is a perspective view which shows the conventional blank insert and the insert which ground it. 本発明の一実施例によるブランクインサートの斜視図である。It is a perspective view of the blank insert by one Example of this invention. 本発明の一実施例によるブランクインサートを研削したインサートの斜視図である。1 is a perspective view of an insert obtained by grinding a blank insert according to an embodiment of the present invention. 本発明の一実施例によるインサートの研削部位を示す斜視図である。It is a perspective view which shows the grinding site | part of the insert by one Example of this invention. 本発明の一実施例によるカッタのポケットに様々な形状のインサートが装着される状態を示す斜視図である。FIG. 5 is a perspective view illustrating a state where inserts of various shapes are mounted in a pocket of a cutter according to an embodiment of the present invention.

以下、本発明によるブランクインサート、これを用いて加工したインサート及びそのインサートを装着したカッタに対する具体的な実施例について説明する。本発明に添付された図面は説明の便宜のためのものであり、その形状と相対的な尺度は誇張または省略され得る。
図４は、本発明によるブランクインサートを示す。ブランクインサート１０は４つの側面３１０、３２０、３３０、３４０によって連結される上面１００及び下面２００を有し、上面と下面の間に延長される貫通孔４００を有する。前記上面と下面のそれぞれは両隆起部１１０、１３０と中央ノッチ部１２０を含む、前記両隆起部は上面が平坦で、対向する二つの側面３１０、３３０に連接して形成され、前記二つの側面の全体の長さに沿って延長される。前記中央ノッチ部１２０は前記両隆起部の間の平坦面であり、両隆起部から段差を有しつつ陥没されるようにアンダーカットに形成される。 Hereinafter, specific examples of the blank insert according to the present invention, an insert processed using the same, and a cutter equipped with the insert will be described. The drawings attached to the present invention are for convenience of description, and the shape and relative scale may be exaggerated or omitted.
FIG. 4 shows a blank insert according to the invention. The blank insert 10 has an upper surface 100 and a lower surface 200 connected by four side surfaces 310, 320, 330, and 340, and has a through hole 400 that extends between the upper surface and the lower surface. Each of the upper and lower surfaces includes both raised portions 110 and 130 and a central notch portion 120. The raised portions are flat on the upper surface and are formed to be connected to two opposing side surfaces 310 and 330, and the two side surfaces. Is extended along the entire length of the. The central notch 120 is a flat surface between the two raised portions, and is formed in an undercut so as to be recessed with a step from both raised portions.

図３に明確に図示してはいないが、下面の構造も上面と同一である。下面の中央ノッチ部の延長方向は上面の中央ノッチ部と平行する方向であっても、直交する方向であっても良い。
一般にこのようなブランクインサートはモールドプレス成型で製造され、以下で説明される様々な形状のインサートに研削加工するために提供される。図５は、研削前のブランクインサートとそれを研削加工して得られた（ａ）凸状インサート及び（ｂ）凹状インサートの例を示す。上記のように研削されたインサートは両隆起部の研削された部分（図６の濃い色で表示された部分）を除けば、残りの部分はブランクインサートと構造が同じである。 Although not clearly shown in FIG. 3, the structure of the lower surface is the same as that of the upper surface. The extending direction of the central notch portion on the lower surface may be a direction parallel to the central notch portion on the upper surface or a direction orthogonal thereto.
In general, such blank inserts are manufactured by mold pressing and are provided for grinding into various shaped inserts described below. FIG. 5 shows an example of a blank insert before grinding and (a) a convex insert and (b) a concave insert obtained by grinding the blank insert. The insert ground as described above has the same structure as that of the blank insert except for the ground portions (shown in dark color in FIG. 6) of both raised portions.

すなわち、前記両隆起部は二つの対向側面に連接し、前記二つの対向側面の全体の長さに沿って延長され、その上面は前記二つの対向側面に沿って勾配をつけられた凸状曲面５１０ａ、５２０ａ又は凹状曲面５１０ｂ、５２０ｂを含み、それによって凸状の勾配又は凹状の勾配を有する切削刃を有するインサートを提供する。
ブランクインサートと同じように、前記インサートの下面の構造も上面と同一である。ただし、下面の中央ノッチ部の延長方向は上面の中央ノッチ部と平行する方向場合であっても、直交する方向であっても良い。 That is, the raised portions are connected to two opposing side surfaces, extended along the entire length of the two opposing side surfaces, and an upper surface of the convex curved surface having a slope along the two opposing side surfaces. 510a, 520a or concave curved surfaces 510b, 520b, thereby providing an insert having a cutting blade with a convex or concave gradient.
Like the blank insert, the structure of the lower surface of the insert is the same as the upper surface. However, the extending direction of the central notch portion on the lower surface may be a direction parallel to the central notch portion on the upper surface or a direction orthogonal thereto.

本発明によるインサートは両隆起部のみで研削が行われるので、図３に示す従来のインサートに比べて研削中に除去される体積が減少するので原料が節約され研削作業が著しく軽減される。また、下面が平坦面であるので上面に二つの切削刃のみが提供される従来のインサートとは異なって、本発明による前記インサートは下面も上面と同じ構造を有して４つの切削刃が提供されるのでその分耐久性が二倍に増加する。   Since the insert according to the present invention is ground only at both raised portions, the volume removed during grinding is reduced as compared with the conventional insert shown in FIG. 3, so that raw materials are saved and the grinding operation is remarkably reduced. Also, unlike the conventional insert in which the lower surface is flat and only two cutting blades are provided on the upper surface, the insert according to the present invention has the same structure as the upper surface and the four cutting blades are provided. As a result, the durability is doubled accordingly.

一方、本発明によるインサートの下面が様々な曲率の曲面を含む隆起部を有することにもかかわらず、依然として平坦な中央ノッチ部を有するので、カッタのポケット６９０を図７に示すように形成することで様々な形状のインサートを装着することができる。すなわち、前記ポケットはインサートの側面が支持される二つの側壁６４０、６５０とインサートの下面が支持される一つの底壁６１０乃至６３０とを備え、前記底壁は中央ノッチ部に対応する平坦面上の突出接触部６３０と両隆起部を収容する陥没された収容部６１０、６２０とを有する。   On the other hand, the cutter pocket 690 is formed as shown in FIG. 7 because the lower surface of the insert according to the present invention still has a flat central notch despite the fact that it has a raised portion containing curved surfaces of various curvatures. It is possible to install inserts of various shapes. That is, the pocket includes two side walls 640 and 650 on which the side surface of the insert is supported and one bottom wall 610 to 630 on which the lower surface of the insert is supported, and the bottom wall is on a flat surface corresponding to the central notch. Projecting contact portion 630 and recessed housing portions 610 and 620 for housing both raised portions.

ここでインサートの中央ノッチ部とポケットの突出部は互いに平坦であるので面接触して半径方向の支持力を提供する。しかし、カッタポケットの収容部はインサートの両隆起部を収容するが、インサートの切削刃が接触されないように十分な空間を確保することで様々な形状の隆起部を収容することができる。   Here, the central notch portion of the insert and the protruding portion of the pocket are flat with each other so that they come into surface contact to provide a radial support force. However, the cutter pocket accommodating portion accommodates both raised portions of the insert, but it is possible to accommodate raised portions of various shapes by securing a sufficient space so that the cutting blade of the insert is not contacted.

以上開示されたブランクインサート、これを用いて加工したインサートとそのインサートを装着したカッタは、基本的な思想から逸脱しない範囲内で様々な変形例が可能である。したがって、開示された実施例はいずれも例示的なものとして解釈されるべきであり、限定的に解釈されてはならないものである。したがって、本発明の保護範囲は上述した一実施例でなく添付された特許請求の範囲によって決定されるべきである。添付された特許請求の範囲の均等物への置換は添付された特許請求の範囲の保護範囲に属するものである。   The blank insert disclosed above, the insert processed using the same, and the cutter equipped with the insert can be variously modified without departing from the basic concept. Accordingly, all disclosed embodiments are to be construed as illustrative and should not be construed as limiting. Accordingly, the protection scope of the present invention should be determined by the appended claims rather than by the embodiment described above. Replacement of the appended claims with their equivalents belongs to the protection scope of the attached claims.

Claims (3)

４つの側面によって連結される上面及び下面を有し、上面と下面の間に延長される貫通孔を有するインサートであり、
前記上面と下面のそれぞれは両隆起部と中央ノッチ部を含み、
前記両隆起部は、二つの対向側面に連接し、前記二つの対向側面の全体の長さに沿って延長され、その上面が前記二つの対向側面に沿って勾配をつけられた凹状または凸状の曲面を含むことで、凹状または凸状の勾配を有する切削刃を提供し、
前記中央ノッチ部は、前記両隆起部の間の平坦面として形成され、前記二つの対向側面の全体の長さに沿って延長されており、
前記下面の前記中央ノッチ部は、前記上面の前記中央ノッチ部と直交する方向に延在しており、
前記切削刃の延長方向と前記中央ノッチ部の延長方向は実質的に平行であり、
前記中央ノッチ部と前記中央ノッチ部に連接する前記側面の間の稜線は、切削刃として機能しない
インサート。 An insert having a top surface and a bottom surface connected by four side surfaces and having a through hole extending between the top surface and the bottom surface;
Each of the top and bottom surfaces includes both ridges and a central notch,
The raised portions are connected to two opposing side surfaces, extended along the entire length of the two opposing side surfaces, and a concave or convex shape whose upper surface is sloped along the two opposing side surfaces. A cutting blade having a concave or convex gradient is provided.
The central notch is formed as a flat surface between the ridges and extends along the entire length of the two opposing sides;
The central notch portion of the lower surface extends in a direction orthogonal to the central notch portion of the upper surface,
The extension direction of the cutting blade and the extension direction of the central notch are substantially parallel,
An edge line between the central notch portion and the side surface connected to the central notch portion does not function as a cutting blade. 前記中央ノッチ部は前記隆起部から段差を有しつつ陥没されるように形成された
請求項１に記載のインサート。 The insert according to claim 1, wherein the central notch portion is formed to be depressed with a step from the raised portion. 請求項１又は２に記載のインサートが装着されるカッタにおいて、
前記カッタのインサートポケットはインサートの側面が支持される二つの側壁とインサートの下面が支持される一つの底壁とを備え、前記底壁は前記インサートの下面の中央ノッチ部と対応する平坦面上の突出接触部と前記インサートの両隆起部を収容する陥没された収容部とを有する
カッタ。 In the cutter to which the insert according to claim 1 or 2 is mounted,
The insert pocket of the cutter includes two side walls on which the side surface of the insert is supported and a bottom wall on which the lower surface of the insert is supported, and the bottom wall is on a flat surface corresponding to a central notch on the lower surface of the insert. A cutter having a protruding contact portion and a recessed receiving portion for receiving both raised portions of the insert.
JP2014208369A 2008-11-17 2014-10-09 Blank insert, insert using the same, and cutter Pending JP2015027732A (en)

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KR1020080114226A KR101017105B1 (en) 2008-11-17 2008-11-17 Insert and Cutter Utilizing the Same
KR10-2008-0114226 2008-11-17

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JP2011534409A Division JP2012506780A (en) 2008-11-17 2009-11-10 Blank insert and insert and cutter using the same

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JP2015027732A true JP2015027732A (en) 2015-02-12

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JP2011534409A Pending JP2012506780A (en) 2008-11-17 2009-11-10 Blank insert and insert and cutter using the same
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JP (2) JP2012506780A (en)
KR (1) KR101017105B1 (en)
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WO2014174555A1 (en) * 2013-04-26 2014-10-30 Sumitomo Electric Hardmetal Corp. Indexable cutting insert, cutting insert holder, cutting tool, turning device and turning method
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EP2358493A4 (en) 2012-08-22
WO2010056021A2 (en) 2010-05-20
WO2010056021A3 (en) 2010-08-05
ZA201103257B (en) 2012-01-25
KR101017105B1 (en) 2011-02-25
BRPI0921012A2 (en) 2018-10-16
KR20100055246A (en) 2010-05-26
JP2012506780A (en) 2012-03-22
CN102209601A (en) 2011-10-05
EP2358493A2 (en) 2011-08-24

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