JP2010105134A - Cutting edge exchange type chip and method for working the chip - Google Patents

Cutting edge exchange type chip and method for working the chip Download PDF

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JP2010105134A
JP2010105134A JP2008281187A JP2008281187A JP2010105134A JP 2010105134 A JP2010105134 A JP 2010105134A JP 2008281187 A JP2008281187 A JP 2008281187A JP 2008281187 A JP2008281187 A JP 2008281187A JP 2010105134 A JP2010105134 A JP 2010105134A
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tip
chip
cutting edge
polishing
blade
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Takashi Morimura
隆 森村
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Sumitomo Electric Hardmetal Corp
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Sumitomo Electric Hardmetal Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting edge exhcnage type chip and a method for working a chip, which can attain the improved productivity of the edge replacement-type chip utilizable in high-accuracy cutting to lower the cost. <P>SOLUTION: The cutting edge exchange type chip 1 is a sintered product for a cutting tool. The cutting edge exchange type chip comprises a main cutting edge 6 defined by a ridge line between an upper surface 2 and a side surface 4 and uses the upper surface 2 as a rake surface. A side-surface upper part 4a as a flank for the main cutting edge 6 is formed of a polished surface, and a side-surface lower part 4b as a supporting surface for positioning is formed of a non-polished surface with a sintered skin remaining unremoved, whereby the polishing area is reduced smaller than that in a whole circumference polished chip. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

この発明は、高精度切削とコスト削減を両立させる切削工具用の刃先交換式チップと、そのチップを高精度に加工するための加工方法に関する。   The present invention relates to a blade-tip replaceable tip for a cutting tool that achieves both high-precision cutting and cost reduction, and a processing method for processing the tip with high accuracy.

切削工具用の刃先交換式チップ（以下では単にチップと言う）は、焼結品が主流をなしている。その焼結品のチップで切れ刃を構成した切削工具を用いて精密加工を行う際は、精度を高めた研磨級チップが使用される。ところが、その研磨級チップは、加工コストが高い。そこで、安価な無研磨チップを高精度切削に適用するための様々な工夫がなされている（例えば、下記特許文献１）。   Sintered products are the mainstream of cutting edge replaceable tips for cutting tools (hereinafter simply referred to as “tips”). When precision machining is performed using a cutting tool having a cutting edge made of a sintered product chip, a polishing grade chip with higher accuracy is used. However, the polishing grade chip has a high processing cost. Therefore, various ideas have been made to apply an inexpensive non-polishing tip to high-precision cutting (for example, Patent Document 1 below).

下記特許文献２に開示されたチップも同様の工夫を必要とする。この特許文献２のチップは、側面の上側部分（この発明ではこれを側面上部という）を逃げ面として使用し、側面の下側部分（これを側面下部という）をカッタボディにチップを装着するときの径方向位置決め用の支持面として使用する。また、主切れ刃を構成する稜線（上面と側面が交差した位置の稜線）も湾曲しており、形状が複雑である。そのために、切れ刃の高位置精度が要求されるときには、全周研磨（側面の全域の研磨）を行なう必要があった。   The chip disclosed in Patent Document 2 below also requires the same device. The chip of Patent Document 2 uses the upper part of the side surface (in this invention, this is called the upper part of the side surface) as a flank, and the lower part of the side surface (referred to as the lower part of the side surface) is mounted on the cutter body. It is used as a support surface for positioning in the radial direction. Moreover, the ridgeline (the ridgeline at the position where the upper surface and the side surface intersect) constituting the main cutting edge is also curved, and the shape is complicated. Therefore, when high position accuracy of the cutting edge is required, it has been necessary to perform all-round polishing (polishing of the entire side surface).

特開２００４−２６１９３３号公報JP 2004-261933 A 特開２００７−４４７７９号公報JP 2007-44779 A

無研磨チップは、安価であるがこれを高精度切削に適用するときには様々な工夫が要求され、チップ形状も制限される。例えば、特許文献２が開示しているチップは、形状が複雑なため、位置決めブロックの支持面にチップの側面を確実に沿わせるのが難しくてセット姿勢が１°以上ばらつく。このばらつき（角度ずれ）が原因でチップの側面上部と側面下部の位相がずれると、チップをカッタボディに装着したときに刃先位置がばらついて高精度切削が望めない。   An unpolished tip is inexpensive, but when it is applied to high-precision cutting, various ideas are required, and the tip shape is also limited. For example, since the chip disclosed in Patent Document 2 has a complicated shape, it is difficult to ensure that the side surface of the chip is aligned with the support surface of the positioning block, and the set posture varies by 1 ° or more. If the phase between the upper part of the side surface and the lower part of the side surface is shifted due to this variation (angular deviation), the cutting edge position varies when the chip is mounted on the cutter body, and high precision cutting cannot be expected.

従って、刃先の高位置精度が要求されるときには、全周研磨（側面の全域の研磨）を行なう必要があり、研磨時間が長くなることによる生産性の低下とそれによるコストアップが避けられなかった。   Therefore, when high positional accuracy of the cutting edge is required, it is necessary to perform all-round polishing (polishing of the entire side surface), and it is inevitable that the productivity is lowered and the cost is increased due to the longer polishing time. .

この発明は、高精度切削が可能な刃先交換式チップの生産性を向上させてコスト低減を図ること、及び、そのチップの加工精度を高めることを課題としている。   This invention makes it the subject to improve the productivity of the blade-tip-exchange-type chip | tip which can perform high precision cutting, aiming at cost reduction, and raising the processing precision of the chip | tip.

上記の課題を解決するため、この発明においては、上面と側面との間の稜線で主切れ刃を構成し、上面をすくい面にして使用する切削工具用の焼結品の刃先交換式チップについて、主切れ刃の逃げ面となす側面上部を研磨面、チップ位置決め用の支持面となす側面下部を焼結肌（いわゆる黒皮）が残された無研磨面となした。   In order to solve the above-mentioned problem, in the present invention, a cutting edge replaceable tip of a sintered product for a cutting tool used by forming a main cutting edge with a ridge line between an upper surface and a side surface and scooping the upper surface The upper part of the side surface serving as the flank of the main cutting edge was a polished surface, and the lower part of the side surface serving as the support surface for chip positioning was a non-polished surface with a sintered skin (so-called black skin) left.

このチップは、好ましい形態として、無研磨面で構成される前記側面下部を、研磨面で構成される側面上部との間に段差を生じさせて研磨面の延長上にある仮想面よりも内側に入り込ませたものが考えられる。   As a preferable form, this chip has a side difference between the lower portion of the side surface constituted by the non-polished surface and the upper portion of the side surface constituted by the polished surface, and is located inside the virtual surface on the extension of the polished surface. It is possible that something has entered.

研磨面で構成される側面上部と無研磨面で構成される側面下部は、両者の位相のずれが小さいほど好ましく、下記するこの発明の加工方法で側面上部を研磨したチップは、その位相のずれを１５′以下に抑えることができる。   It is preferable that the phase difference between the upper side surface composed of the polished surface and the lower side surface composed of the non-polished surface is as small as possible. Can be suppressed to 15 'or less.

この発明の刃先交換式チップの加工方法は、この発明のチップの側面上部を研磨する際の加工方法であって、研磨する前のチップを位置決めブロックで位置決めした後、チャック治具で保持し、次いで、保持されたチップの研磨する前の側面上部の正常姿勢からの角度ずれ量を測定し、その測定結果から求めた補正値を取り込んで側面上部の研磨を行なう。ここで言う正常姿勢とは、測定の基準となす姿勢であり、砥石との関係が一定している。   The blade tip replaceable chip processing method of the present invention is a processing method when polishing the upper side surface of the chip of the present invention, and after positioning the chip before polishing with a positioning block, it is held by a chuck jig, Next, the angle deviation amount from the normal posture of the upper side surface before polishing of the held chip is measured, and the correction value obtained from the measurement result is taken in to polish the upper side surface. The normal posture mentioned here is a posture used as a reference for measurement, and the relationship with the grindstone is constant.

前記側面上部の角度ずれ量の測定は、チャック治具で保持したチップの研磨する前の側面上部と研磨用砥石との間のギャップを検出し、検出したギャップの基準ギャップからのずれ量を求めてそのずれ量を角度換算する方法で行なうことができる。   The amount of angular deviation of the upper side surface is measured by detecting the gap between the upper side surface of the chip held by the chuck jig before polishing and the grinding stone for polishing, and determining the amount of deviation of the detected gap from the reference gap. The amount of deviation can be converted into an angle.

この方法でのギャップの検出は、チャック治具で保持したチップを、そのチップの中心を支点にして定位置で左回り方向と右回り方向に回転させ、このときの、側面上部の一端と他端が研磨用砥石に接触するまでの回転角からチップ中心の座標を演算し、演算したその座標と前記側面上部の一端又は他端の回転角をチップ中心の正常位置での座標及び正常姿勢のときの回転角と照合して行なう。   In this method, the gap is detected by rotating the tip held by the chuck jig counterclockwise and clockwise at a fixed position with the center of the tip as a fulcrum. The coordinates of the tip center are calculated from the rotation angle until the end contacts the grinding wheel, and the calculated coordinates and the rotation angle of one end or the other end of the upper side of the side are the coordinates at the normal position of the tip center and the normal posture. Check against the current rotation angle.

この発明の、刃先交換式チップは、側面上部を研磨し、側面下部は焼結肌を残したままにしている。従って、全周研磨に比べると側面の研磨面積が減少し、研磨加工の時間短縮による生産性の向上、それによるコスト低減が図れる。   In the blade tip replaceable tip of this invention, the upper part of the side surface is polished and the lower part of the side surface is left with a sintered skin. Therefore, compared with the all-round polishing, the side polishing area is reduced, and the productivity can be improved by reducing the polishing time, thereby reducing the cost.

なお、無研磨面を研磨面の延長上にある仮想面よりも内側に入り込ませたものは、側面上部が例えば曲面で構成されるときにもチップ座の座側面で支える側面下部は平面で構成することができ、カッタボディに設けるチップ座の加工を容易化し、併せて、チップの側面下部の着座安定性を高めることが可能になる。   In addition, when the non-polished surface is inserted inside the virtual surface on the extension of the polished surface, the lower side surface supported by the seat side of the chip seat is a flat surface even when the upper side surface is configured with a curved surface, for example It is possible to facilitate the processing of the chip seat provided in the cutter body, and at the same time, it is possible to improve the seating stability of the lower portion of the side surface of the chip.

また、側面上部（研磨面）と側面下部（無研磨面）の位相のずれが１５′以下のチップは、チップをカッタボディに装着したときの刃先精度のばらつきが小さくて工具の加工精度が向上する。   In addition, inserts with a phase shift of 15 'or less between the upper side (polished surface) and lower side (non-polished surface) have less variation in cutting edge accuracy when the tip is mounted on the cutter body, improving the tool machining accuracy. To do.

次に、この発明のチップの加工方法は、側面上部を研磨する前に、その側面上部の正常姿勢からの角度ずれ量を測定し、その角度ずれ量を補正して側面上部の研磨を行なう。この角度ずれ量の補正により、研磨が正確になされて研磨後の側面上部の位置精度が高まる。   Next, according to the chip processing method of the present invention, before the upper side surface is polished, the angle deviation amount from the normal posture of the upper side surface is measured, and the upper side surface is polished by correcting the angular deviation amount. By correcting the angle deviation amount, the polishing is performed accurately, and the positional accuracy of the upper side surface after polishing is increased.

また、チップをカッタボディに装着するときのチップの位置決めは側面下部を用いてなされるので、刃先位置をばらつかせるチップの側面上部と側面下部の位相のずれは小さいほどよい。この発明の方法によれば、研磨時のチップの姿勢が安定してチップの側面上部の位置精度の低下が抑えられるので、チップの側面上部と側面下部の位相のずれも小さくなり、チップをカッタボディに装着したときの刃先位置のばらつきが抑えられて工具の加工精度が向上する。   Further, since the positioning of the tip when the tip is mounted on the cutter body is performed using the lower portion of the side surface, it is better that the phase shift between the upper portion of the side surface and the lower portion of the side surface that causes the cutting edge position to vary is smaller. According to the method of the present invention, since the posture of the chip during polishing is stabilized and a decrease in the positional accuracy of the upper part of the side surface of the chip is suppressed, the phase shift between the upper part of the side surface of the chip and the lower part of the side surface is reduced. The variation of the cutting edge position when mounted on the body is suppressed, and the machining accuracy of the tool is improved.

以下、添付図面の図１〜図１０に基づいてこの発明の実施の形態を説明する。図１〜図５は、この発明の焼結品のチップ（刃先交換式チップ）の実施の形態を示している。図示のチップ１（刃先交換式チップ）は、基本構成が前掲の特許文献２で提案しているチップと共通するものであって、湾曲した上面２と、４つのコーナを有する略長方形の平坦な底面３と、その底面３の平行な２辺に連なる２つの側面４，４と、底面３の他の平行な２辺に連なる２つの端面５，５と、縦長の２つの主切れ刃６，６と、対角コーナ部に配置される２つの副切れ刃７，７と、上面２のコーナに形成される４つのノーズ部８−１〜８−４と、チップ中心に設けるクランプ用の取り付け穴９と、カッタボディのチップ座で支える支持面１０，１１を備えている。 Hereinafter, embodiments of the present invention will be described with reference to FIGS. 1 to 10 of the accompanying drawings. 1 to 5 show an embodiment of a sintered article chip (blade tip replaceable chip) according to the present invention. The illustrated tip 1 (blade replaceable tip) has a basic configuration in common with the tip proposed in the above-mentioned Patent Document 2, and is a substantially rectangular flat surface having a curved upper surface 2 and four corners. A bottom surface 3, two side surfaces 4, 4 connected to two parallel sides of the bottom surface 3, two end surfaces 5, 5 connected to the other two parallel sides of the bottom surface 3, and two vertically long main cutting edges 6, 6. 6, two sub-cutting blades 7, 7 arranged at the diagonal corner portion, four nose portions 8 −1 to 8 −4 formed at the corner of the upper surface 2, and attachment for clamping provided at the center of the chip The support surface 10 and 11 supported by the hole 9 and the chip seat of a cutter body is provided.

側面４，４は、側面上部４ａと側面下部４ｂの２領域からなる。側面上部４ａは上面２との間に主切れ刃６となる稜線を作り出す面であってこの発明ではこの側面上部４ａを研磨面で構成している。   The side surfaces 4 and 4 are composed of two regions, a side surface upper portion 4a and a side surface lower portion 4b. The side surface upper portion 4a is a surface that creates a ridge line that becomes the main cutting edge 6 between the upper surface 2 and in the present invention, the side surface upper portion 4a is constituted by a polished surface.

側面下部４ｂは、底面３と交差する面であり、側面上部４ａの下側に配置されている。この側面下部４ｂは、側面上部４ａに対して段差をもって連ならせており、側面上部４ａの延長上にある仮想面Ｖｆよりも内側に入り込んだ面になっている。側面上部４ａに対して段差なしで単に角度をもって連なる側面下部も考えられるが、側面上部４ａに対して段差をもって連なる側面下部は、側面上部を研磨することによる面積変化が起こらなくて好ましい。   The lower side surface 4b is a surface that intersects the bottom surface 3, and is disposed below the upper side surface 4a. The side surface lower portion 4b is connected to the side surface upper portion 4a with a step, and is a surface that enters the inner side of the virtual surface Vf on the extension of the side surface upper portion 4a. A lower side surface that is connected to the side surface upper portion 4a with a step without any step is also conceivable. However, the lower side surface connected to the side surface upper portion 4a with a step is preferable because the area change due to polishing of the upper side surface does not occur.

主切れ刃６は緩やかに湾曲した刃になっている。その主切れ刃６を上面２との間に作り出す側面上部４ａは曲面の含まれた面になっている。これに対し、側面下部４ｂは平面で構成されており、この側面下部４ｂを前記支持面１０として利用してカッタボディに装着したチップの径方向位置決めがなされる。   The main cutting edge 6 is a gently curved blade. The side surface upper part 4a that creates the main cutting edge 6 with the upper surface 2 is a curved surface. On the other hand, the lower side surface 4b is a flat surface, and the side surface lower portion 4b is used as the support surface 10 to position the chip mounted on the cutter body in the radial direction.

その側面下部４ｂについては焼結肌が残された無研磨面にしており、そのために、図示のチップの場合、側面の研磨領域が全周研磨を行なうときに比べてほぼ半減する。   The side surface lower portion 4b is a non-polished surface with a sintered skin left. Therefore, in the case of the illustrated chip, the side surface polishing region is almost halved compared to the case where the entire circumference is polished.

端面５は、対角コーナに偏った部分が他の部分よりも突出しており、その突出した部分の端面Ｅｆが上面２と交差した位置の稜線が副切れ刃７となっている。また、突出していない部分の端面は平面で構成され、前記支持面１１としてカッタボディ上でチップを軸方向に位置決めするのに利用される。例示のチップは、副切れ刃７の逃げ面となる部分、すなわち、上述した突出した部分の端面Ｅｆについても研磨を行っている。 In the end surface 5, a portion biased to the diagonal corner protrudes from the other portions, and a ridge line at a position where the end surface E f of the protruding portion intersects the upper surface 2 is a sub-cutting edge 7. Further, the end surface of the non-projecting portion is a flat surface, and is used as the support surface 11 to position the chip in the axial direction on the cutter body. Exemplary chip flank to become part of the secondary cutting 7, that is, was polished also end face E f of the protruding portion described above.

上述した通り、チップの研磨領域を側面の上側のみとすることができ、研磨に要する時間が短縮されてチップの生産性向上、コスト低減の効果がさらに高まっている。   As described above, the polishing region of the chip can be set only on the upper side, and the time required for polishing is shortened, and the effects of improving the productivity and reducing the cost are further increased.

このチップ１は、側面下部４ｂと端面５を無研磨面で構成した点が前掲の特許文献２のチップと異なる。側面上部４ａと側面下部４ｂの位相のずれは１５′以下であり、従来の全周研磨品と置き換えて高精度加工用として使用することができる。   This chip 1 is different from the chip of Patent Document 2 described above in that the side surface lower portion 4b and the end surface 5 are formed of a non-polished surface. The phase shift between the upper side surface 4a and the lower side surface 4b is 15 'or less, and can be used for high-precision machining in place of a conventional all-round polished product.

なお、図示のチップはあくまでも一例にすぎない。この発明は、側面の上側部分が逃げ面、下側部分が位置決めのための支持面として使用されるチップのすべてに適用される。   Note that the illustrated chip is merely an example. The present invention is applicable to all chips in which the upper portion of the side surface is used as a relief surface and the lower portion is used as a support surface for positioning.

図１のチップ１を装着した切削工具の一例を図６に示す。図に示すようにカッタボディ２１の先端外周にチップ座２２が周方向に間隔をあけて複数設けられており、そのチップ座２２に、上記チップ１がクランプねじ２３でクランプして装着されている。   An example of a cutting tool equipped with the chip 1 of FIG. 1 is shown in FIG. As shown in the figure, a plurality of tip seats 22 are provided on the outer periphery of the tip of the cutter body 21 at intervals in the circumferential direction, and the tip 1 is clamped and attached to the tip seat 22 with a clamp screw 23. .

その装着は、副切れ刃７が工具の最先端に、主切れ刃６が最外周にそれぞれ位置し、主切れ刃６のアキシャルレーキが正、副切れ刃７のラジアルレーキが負となり、主切れ刃によって加工されるコーナの壁面が工具の軸心と平行、副切れ刃７によって加工されるコーナの底面が工具の軸心とほぼ直角になるように行われる。   The secondary cutting edge 7 is positioned at the cutting edge of the tool, the main cutting edge 6 is positioned at the outermost periphery, the axial rake of the main cutting edge 6 is positive, and the radial rake of the secondary cutting edge 7 is negative. The corner wall processed by the blade is parallel to the tool axis, and the bottom surface of the corner processed by the secondary cutting edge 7 is substantially perpendicular to the tool axis.

このときのチップの工具径方向の位置決めは、チップの切削に関与しない側の側面下部４ｂをチップ座２２の座側面に当接させることによってなされる。また、軸方向の位置決めは、切削に関与しない側の端面５（支持面１１となす部分）をチップ座２２の座側面に当接させることによってなされる。   The positioning of the tip in the tool radial direction at this time is performed by bringing the lower side surface 4b on the side not involved in the cutting of the tip into contact with the seating side of the tip seat 22. Further, the positioning in the axial direction is performed by bringing the end surface 5 (the portion formed with the support surface 11) on the side not involved in cutting into contact with the seat side surface of the chip seat 22.

次に、上記チップ１の側面上部４ａを研磨加工するための方法を、図７〜図１０を参照して説明する。側面上部４ａの研磨は、チップ１を位置決めした後に実施されるが、チップの位置決めは、図７に示すように、曲面の含まれた側面上部４ａを位置決めブロック３０の支持面３１上にセットすることによって行なわれるので、セット過程において不可避の位置決め誤差が発生する。その状態で側面上部４ａを研磨すると、位置決め誤差の影響が現われて側面上部４ａと側面下部４ｂとの間に１°以上の角度ずれが発生する。その角度ずれは、チップをカッタボディに装着したときに刃先位置をばらつかせる。   Next, a method for polishing the side surface upper portion 4a of the chip 1 will be described with reference to FIGS. The polishing of the side surface upper portion 4a is performed after positioning the chip 1. The chip positioning is performed by setting the side surface upper portion 4a including the curved surface on the support surface 31 of the positioning block 30, as shown in FIG. Therefore, an inevitable positioning error occurs in the setting process. When the side surface upper portion 4a is polished in this state, an influence of positioning error appears and an angle shift of 1 ° or more occurs between the side surface upper portion 4a and the side surface lower portion 4b. The angular deviation causes the cutting edge position to vary when the chip is mounted on the cutter body.

この発明の加工方法は、その問題の解決策として開発されたものであって、研磨する前のチップ１を図７に示すように位置決めブロック３０で位置決めし、その後、図８に示すようにチャック治具（アンビルチャックなど）３２で保持する。   The processing method of the present invention has been developed as a solution to the problem, and the chip 1 before polishing is positioned by the positioning block 30 as shown in FIG. 7, and then the chuck as shown in FIG. Hold by a jig (anvil chuck or the like) 32.

次いで、保持されたチップ１の研磨する前の側面上部４ａの正常姿勢からの角度ずれ量を測定する。その測定は、研磨する前の側面上部４ａと研磨を行なう砥石３３との間のギャップｇ（図９）を検出し、検出したギャップの基準ギャップからのずれ量を求めてそのずれ量を角度換算する方法で行なわれる。   Next, the amount of angular deviation from the normal posture of the upper side surface 4a before polishing the held chip 1 is measured. The measurement is performed by detecting a gap g (FIG. 9) between the upper side surface 4a before polishing and the grindstone 33 to be polished, obtaining a deviation amount of the detected gap from the reference gap, and converting the deviation amount into an angle. Is done in a way that

ギャップｇの検出は、図９（ａ）、（ｂ）に示す方法で行える。この図９の方法は、チップ１を保持したチャック治具３２を予め定められたギャップ測定位置（定位置）に移動させ、その位置で中心を支点にしてチップ１を左回り方向と右回り方向に回転させ、このときの、側面上部４ａの一端と他端が砥石３３に接触するまでの回転角を求める。そしてその回転角からチップ中心Ｏの座標を演算し、演算したその座標と前記回転角をチップ中心の正常位置での座標及び正常姿勢のときの回転角と照合する。   The gap g can be detected by the method shown in FIGS. In the method of FIG. 9, the chuck jig 32 holding the chip 1 is moved to a predetermined gap measurement position (fixed position), and the chip 1 is moved counterclockwise and clockwise with the center as a fulcrum at that position. The rotation angle until the one end and the other end of the side surface upper portion 4a are in contact with the grindstone 33 is obtained. Then, the coordinates of the chip center O are calculated from the rotation angle, and the calculated coordinates and the rotation angle are collated with the coordinates at the normal position of the chip center and the rotation angle at the normal posture.

例えば、正常姿勢での右回りの回転角がθに設定されているとして実際の回転角が（θ＋Δθ）であった場合（チップ中心Ｏは正常位置からずれていないと仮定する）、チップの角度は本来の角度からΔθずれていることになる。そこで、チャック治具の姿勢を制御してそのずれ角Δθを補正し（図１０参照）、補正後に砥石３３を切り込ませて側面上部４ａの研磨を行なう。   For example, when the clockwise rotation angle in the normal posture is set to θ and the actual rotation angle is (θ + Δθ) (assuming that the chip center O is not deviated from the normal position), the chip angle Is deviated from the original angle by Δθ. Therefore, the posture of the chuck jig is controlled to correct the deviation angle Δθ (see FIG. 10), and after the correction, the grindstone 33 is cut to polish the upper side surface 4a.

これにより、研磨後の側面上部４ａと研磨されていない側面下部４ｂの位相のずれが極めて小さくなる。実際に、従来最大で６３′あった位相のずれがこの方法で１５′以下に縮小された。標準偏差も従来が１７．４′に対し、この発明の方法では５．８′と極めて小さくなった。   As a result, the phase shift between the polished side surface upper portion 4a and the unpolished side surface lower portion 4b becomes extremely small. Actually, the phase shift of 63 'at the maximum in the past was reduced to 15' or less by this method. The standard deviation is extremely small at 5.8 'in the method of the present invention as compared with the conventional 17.4'.

なお、ギャップ測定位置で回転させたチップ１が砥石３３に接触したことは、接触音を検出する方法で確認することができる。   In addition, it can confirm that the chip | tip 1 rotated in the gap measurement position contacted the grindstone 33 by the method of detecting a contact sound.

このように、この発明の加工方法を用いれば、側面下部４ｂとの間に大きな位相差（角度ずれ）を生じさせずにチップの側面上部４ａを研磨することができ、全周研磨品と比較して遜色のない性能を得ながら側面下部４ｂに無研磨面を残すことで研磨面積の削減を図ることが可能になり、高精度加工用チップの生産性の向上、コスト削減を図ることが可能になる。   Thus, if the processing method of this invention is used, the side surface upper part 4a of a chip | tip can be grind | polished without producing a big phase difference (angle shift | offset | difference) between the side surface lower parts 4b. It is possible to reduce the polishing area by leaving an unpolished surface in the lower side surface 4b while obtaining inferior performance, and it is possible to improve the productivity of high-precision machining chips and reduce costs. become.

図１に示したチップの場合、全周研磨は、１個当たりにほぼ３００秒の時間を費やす。これに対し、側面上部のみの研磨は約１００秒で可能であり、研磨時間がほぼ１／３に短縮された。これによる生産性の向上とコスト削減の効果は極めて大きい。   In the case of the chip shown in FIG. 1, the entire circumference polishing takes approximately 300 seconds. On the other hand, the polishing of only the upper part of the side surface was possible in about 100 seconds, and the polishing time was reduced to almost 1/3. The effect of improving productivity and reducing costs is extremely great.

この発明の刃先交換式チップの一例を示す平面図Plan view showing an example of the blade tip replaceable tip of the present invention 図１のチップの底面図Bottom view of the chip of FIG. 図１のチップの側面図Side view of the chip of FIG. 図１のチップの端面図End view of the chip of FIG. 図１のＸ−Ｘ線に沿った断面図Sectional view along line XX in FIG. 図１のチップを使用した切削工具の一例を示す側面図Side view showing an example of a cutting tool using the tip of FIG. 位置決めブロックによる研磨加工前のチップの位置決め方法を示す図The figure which shows the positioning method of the chip | tip before the grinding process by a positioning block 位置決め後のチップのチャック治具による保持の概要を示す斜視図A perspective view showing an outline of holding a chip after positioning by a chuck jig チャック治具で保持したチップの角度ずれの検出方法を示す図The figure which shows the detection method of the angle shift of the chip hold | maintained with the chuck jig チャック治具で保持したチップの角度ずれの補正方法を示す図The figure which shows the correction method of the angle shift of the tip which is held with the chuck jig

符号の説明Explanation of symbols

１ 刃先交換式チップ
２ 上面
３ 底面
４ 側面
４ａ 側面上部
４ｂ 側面下部
５ 端面
６ 主切れ刃
７ 副切れ刃
８−１〜８−４ ノーズ部
９ 取り付け穴
１０、１１ 支持面
２１ カッタボディ
２２ チップ座
２３ クランプねじ
３０ 位置決めブロック
３１ 支持面
３２ チャック治具
３３ 砥石
Ｖｆ 仮想面
θ 回転角 DESCRIPTION OF SYMBOLS 1 Blade-tip-replaceable tip 2 Upper surface 3 Bottom surface 4 Side surface 4a Side surface upper portion 4b Side surface lower portion 5 End surface 6 Main cutting edge 7 Sub cutting edge 8-1 to 8-4 Nose portion 9 Mounting hole 10, 11 Support surface 21 Cutter body 22 Tip seat 23 Clamp screw 30 Positioning block 31 Support surface 32 Chuck jig 33 Grinding wheel Vf Virtual surface θ Rotation angle

Claims (6)

上面（２）と側面（４）との間の稜線で主切れ刃（６）を構成し、上面（２）をすくい面、前記主切れ刃（６）に沿う側面上部（４ａ）を逃げ面、その側面上部（４ａ）と底面（３）との間に配置される側面下部（４ｂ）をチップ座の座側面に支えられる支持面にして使用する切削工具用の焼結品の刃先交換式チップであって、前記主切れ刃（６）に沿う側面上部（４ａ）を研磨面、側面下部（４ｂ）を焼結肌が残された無研磨面となした刃先交換式チップ。   The ridgeline between the upper surface (2) and the side surface (4) constitutes the main cutting edge (6), the upper surface (2) is the rake face, and the upper side surface (4a) along the main cutting edge (6) is the flank The cutting edge replacement type of a sintered product for a cutting tool that uses the lower side surface (4b) disposed between the upper side surface (4a) and the bottom surface (3) as a support surface supported by the seat side surface of the chip seat. A tip-replaceable tip which is a tip and has an upper side surface (4a) along the main cutting edge (6) as a polished surface and a lower side surface (4b) as a non-polished surface with a sintered skin left. 無研磨面で構成される前記側面下部（４ｂ）を、研磨面で構成される前記側面上部（４ａ）の延長上にある仮想面（Ｖｆ）よりも内側に入り込ませた請求項１に記載の刃先交換式チップ。   The said side surface lower part (4b) comprised with a non-polishing surface was made to enter inside the virtual surface (Vf) on the extension of the said side surface upper part (4a) comprised with a grinding | polishing surface. Replaceable blade tip. 前記研磨面で構成される側面上部（４ａ）と無研磨面で構成される側面下部（４ｂ）の位相のずれが１５′以下である請求項１又は２に記載の刃先交換式チップ。   The blade tip replaceable tip according to claim 1 or 2, wherein a phase shift between the upper side surface (4a) constituted by the polished surface and the lower side surface (4b) constituted by the non-polished surface is 15 'or less. 請求項１〜３のいずれかに記載の刃先交換式チップの前記側面上部（４ａ）を研磨するときの加工方法であって、
研磨する前の刃先交換式チップ（１）を位置決めブロック（３０）で位置決めした後、チャック治具（３２）で保持し、次いで、保持された刃先交換式チップ（１）の研磨する前の側面上部（４ａ）の正常姿勢からの角度ずれ量を測定し、その測定結果から求めた補正値を取り込んで側面上部（４ａ）の研磨を行なう刃先交換式チップの加工方法。 It is a processing method when grind | polishing the said side surface upper part (4a) of the blade-tip-exchange-type chip | tip in any one of Claims 1-3,
After the blade tip replaceable tip (1) before polishing is positioned by the positioning block (30), it is held by the chuck jig (32), and then the side surface before polishing of the held blade tip replaceable tip (1) A processing method for a blade-tip-exchangeable chip, in which the amount of angular deviation from the normal posture of the upper part (4a) is measured, and the correction value obtained from the measurement result is taken in to polish the side surface upper part (4a). 前記側面上部（４ａ）の角度ずれ量の測定を、チャック治具で保持した刃先交換式チップ（１）の研磨する前の側面上部（４ａ）と研磨用の砥石（３３）との間のギャップ（ｇ）を検出し、検出したギャップ（ｇ）の基準ギャップからのずれ量を求めてそのずれ量を角度換算する方法で行なう請求項４に記載の刃先交換式チップの加工方法。   The gap between the upper side surface (4a) before polishing the cutting edge replaceable tip (1) held by the chuck jig and the grinding stone (33) for polishing is measured for the amount of angular deviation of the upper side surface (4a). The method of processing a blade-tip replaceable tip according to claim 4, wherein (g) is detected, and the amount of deviation of the detected gap (g) from the reference gap is obtained and the amount of deviation is converted into an angle. 前記ギャップの検出を、チャック治具で保持した刃先交換式チップ（１）を、チップ中心を支点にして定位置で左回り方向と右回り方向に回転させ、このときの、側面上部（４ａ）の一端と他端が研磨用の砥石（３３）に接触するまでの回転角からチップ中心の座標を演算し、演算したその座標と前記側面上部（４ａ）の一端又は他端の回転角をチップ中心の正常位置での座標及び正常姿勢のときの回転角と照合して行なう請求項５に記載の刃先交換式チップの加工方法。   The detection of the gap is performed by rotating the blade tip replaceable tip (1) held by the chuck jig in a counterclockwise direction and a clockwise direction at a fixed position with the tip center as a fulcrum. At this time, the upper side surface (4a) The coordinates of the tip center are calculated from the rotation angle until one end and the other end of the tip come into contact with the grinding wheel (33) for polishing, and the calculated coordinates and the rotation angle of one end or the other end of the upper side surface (4a) are calculated. The cutting edge-replaceable tip machining method according to claim 5, wherein the machining is performed by checking the coordinates at the center normal position and the rotation angle at the normal posture.
JP2008281187A 2008-10-31 2008-10-31 Cutting edge exchange type chip and method for working the chip Pending JP2010105134A (en)

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WO2012020784A1 (en) * 2010-08-11 2012-02-16 京セラ株式会社 Cutting insert, cutting tool, and method for producing cut article using cutting insert and cutting tool
JP2013121638A (en) * 2011-12-12 2013-06-20 Sumitomo Electric Hardmetal Corp Vertical indexable cutting insert and milling cutter
JP2014501628A (en) * 2010-12-01 2014-01-23 セラムテック ゲゼルシャフト ミット ベシュレンクテル ハフツング Full surface finishing press processing / full surface finishing sintered cutting insert and method of manufacturing the cutting insert
WO2014196573A1 (en) * 2013-06-05 2014-12-11 株式会社タンガロイ Cutting insert and tip replacement-type cutting tool
JPWO2019022016A1 (en) * 2017-07-26 2020-06-18 京セラ株式会社 Manufacturing method of cutting insert, cutting tool, and machined product

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Cited By (9)

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Publication number Priority date Publication date Assignee Title
WO2012020784A1 (en) * 2010-08-11 2012-02-16 京セラ株式会社 Cutting insert, cutting tool, and method for producing cut article using cutting insert and cutting tool
CN103025462A (en) * 2010-08-11 2013-04-03 京瓷株式会社 Cutting insert, cutting tool, and method for producing cut article using cutting insert and cutting tool
CN103025462B (en) * 2010-08-11 2015-03-18 京瓷株式会社 Cutting insert, cutting tool, and method for producing cut article using cutting insert and cutting tool
US8998542B2 (en) 2010-08-11 2015-04-07 Kyocera Corporation Cutting insert, cutting tool, and method of manufacturing machined product using them
JP2014501628A (en) * 2010-12-01 2014-01-23 セラムテック ゲゼルシャフト ミット ベシュレンクテル ハフツング Full surface finishing press processing / full surface finishing sintered cutting insert and method of manufacturing the cutting insert
JP2013121638A (en) * 2011-12-12 2013-06-20 Sumitomo Electric Hardmetal Corp Vertical indexable cutting insert and milling cutter
WO2014196573A1 (en) * 2013-06-05 2014-12-11 株式会社タンガロイ Cutting insert and tip replacement-type cutting tool
JPWO2019022016A1 (en) * 2017-07-26 2020-06-18 京セラ株式会社 Manufacturing method of cutting insert, cutting tool, and machined product
JP6994035B2 (en) 2017-07-26 2022-01-14 京セラ株式会社 Manufacturing method of cutting inserts, cutting tools and cutting materials

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