JP2013244583A - Replaceable turning head and head replacement type turning tool - Google Patents

Replaceable turning head and head replacement type turning tool Download PDF

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JP2013244583A
JP2013244583A JP2012121865A JP2012121865A JP2013244583A JP 2013244583 A JP2013244583 A JP 2013244583A JP 2012121865 A JP2012121865 A JP 2012121865A JP 2012121865 A JP2012121865 A JP 2012121865A JP 2013244583 A JP2013244583 A JP 2013244583A
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head
hole
turning
holder
mounting
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Kenji Ishizawa
賢司 石澤
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Abstract

PROBLEM TO BE SOLVED: To improve the rigidity of attachment to a holder while facilitating the attachment/detachment and replacement of a head body.SOLUTION: An insert attaching seat 7 is formed at the tip of a head body 1 detachably attached to the tip of a holder 11 of a turning tool with clamp screws 13, and an insert 21 for turning is further detachably attached to the insert attaching seat 7. In the head body 1, an attaching hole 6 which includes a through-hole part 6a having an inner diameter where the head 13a of a clamp screw 13 can pass through and a through-groove part 6b which is extended from the through-hole part 6a toward the tip side of the head body 1 and has a groove width so that the head 13a cannot pass through and the shaft 13b of the clamp screw 13 can pass through is formed. A fitted part which is fitted to a fitting part 17a provided at the tip of the holder 11 to be inserted and extracted in a direction in parallel with the direction in which the through-groove part 6b is extended from the through-hole part 6a of the attaching hole 6 is provided at the tip side rather than the attaching hole 6.

Description

本発明は、旋削工具のホルダ先端部に着脱可能に取り付けられ、特に突っ切り加工や溝入れ加工等の旋削加工に用いられる交換式旋削加工用ヘッド、および該交換式旋削加工用ヘッドを取り付けたヘッド交換式旋削工具に関するものである。   The present invention relates to an exchangeable turning head used for turning such as parting off and grooving, and a head to which the exchangeable turning head is attached. The present invention relates to an exchangeable turning tool.

このような交換式旋削加工用ヘッドおよびヘッド交換式旋削工具として、例えば特許文献１には、ホルダの先端部に、インサート取付座を備えたヘッド部材（交換式旋削加工用ヘッドのヘッド本体）が挿通穴に挿通されてホルダにねじ込まれる固定ネジ（クランプネジ）によって着脱可能に装着され、そのインサート取付座に切刃を有するインサート（旋削加工用インサート）が固定されることにより構成されるインサート着脱式切削工具（ヘッド交換式旋削工具）が記載されている。   As such an exchangeable turning head and a head exchangeable turning tool, for example, Patent Document 1 discloses a head member (head body of an exchangeable turning head) having an insert mounting seat at the tip of a holder. Insert insertion / removal that is configured to be detachably mounted by a fixing screw (clamp screw) that is inserted into the insertion hole and screwed into the holder, and an insert having a cutting edge (fixed for turning) is fixed to the insert mounting seat Type cutting tools (head interchangeable turning tools) are described.

また、特許文献２にも、交換式旋削加工用ヘッドのヘッド本体に形成された長穴状の貫通穴にクランプネジを挿通してホルダにねじ込むことにより、旋削加工用インサートが取り付けられる交換式旋削加工用ヘッドをホルダ先端部に着脱可能に取り付けてヘッド交換式旋削工具を構成したものが提案されている。   Patent Document 2 also describes an exchangeable turning in which a turning insert is attached by inserting a clamp screw into a holder through a long through hole formed in the head body of the exchangeable turning head. There has been proposed one in which a machining head is detachably attached to the tip of a holder to constitute a head exchangeable turning tool.

特許第４８６７６６１号公報Japanese Patent No. 4867661 ***国特許出願公開第１５５２２９２号明細書West German Patent Application No. 1552292

ところで、これら特許文献１、２に記載の交換式旋削加工用ヘッドおよびヘッド交換式旋削工具では、ヘッド本体に形成された挿通穴の内径や長穴状の貫通穴の幅がクランプネジの頭部の外径よりも小さくされているので、ヘッド本体をホルダから取り外して交換する際には、クランプネジを緩めてホルダのネジ穴から抜き外さなければならない。このため、特許文献１、２に記載のヘッド交換式旋削工具のようにクランプネジが複数であって、特に特許文献２の図１１および図１２に示されたヘッド交換式旋削工具のようにクランプネジが６本もあったりすると、交換式旋削加工用ヘッドのヘッド本体の着脱、交換に多くの時間を要することになり、また抜き外したクランプネジを紛失したりする可能性も高くなる。   By the way, in the exchangeable turning head and the head exchangeable turning tool described in Patent Documents 1 and 2, the inner diameter of the insertion hole formed in the head body and the width of the elongated through hole are the head of the clamp screw. Therefore, when the head body is removed from the holder for replacement, the clamp screw must be loosened and removed from the screw hole of the holder. For this reason, there are a plurality of clamp screws as in the head-exchangeable turning tools described in Patent Documents 1 and 2, and in particular, clamping as in the head-exchangeable turning tool shown in FIGS. 11 and 12 of Patent Document 2. If there are as many as six screws, it will take a lot of time to attach and detach and replace the head body of the exchangeable turning head, and the possibility of losing the clamp screw that has been removed increases.

さらに、特許文献２に記載のヘッド交換式旋削工具では、貫通穴を長穴状とすることによってヘッド本体を進退可能とすることにより、旋削加工用インサートの切刃の突き出し量を調整するようにしているが、ヘッド本体を前進させて突き出し量を大きくした状態でクランプネジによりヘッド本体を固定すると、ヘッド本体先端部の後端側を向く面とこれに対向するホルダの先端側を向く面との間に隙間が空くため、ヘッド本体の取付剛性が損なわれて旋削加工時にヘッド本体にがたつきが生じ、加工精度が低下してしまうおそれもある。   Furthermore, in the head exchange type turning tool described in Patent Document 2, the protrusion amount of the cutting blade of the turning insert is adjusted by making the head body advanceable and retreatable by making the through hole into a long hole shape. However, when the head main body is fixed with a clamp screw in a state where the head main body is advanced and the protrusion amount is increased, a surface facing the rear end side of the head main body front end portion and a surface facing the front end side of the holder opposite to the head main body Since there is a gap between them, the mounting rigidity of the head main body is impaired, and there is a possibility that the head main body becomes rattled during turning and the processing accuracy may be lowered.

本発明は、このような背景の下になされたもので、ホルダとのヘッド本体の着脱、交換を容易にすることができるとともに、ホルダへの取付剛性を向上させることが可能な交換式旋削加工用ヘッド、および該交換式旋削加工用ヘッドが取り付けられたヘッド交換式旋削工具を提供することを目的としている。   The present invention has been made under such a background, and it is possible to easily attach and detach the head main body to and from the holder, and to exchange it, and to improve the mounting rigidity to the holder. It is an object of the present invention to provide a head replacement type turning tool to which the head for use and the head for replacement type turning are attached.

上記課題を解決して、このような目的を達成するために、本発明の交換式旋削加工用ヘッドは、旋削工具のホルダ先端部にクランプネジによって着脱可能に取り付けられるヘッド本体の先端部にインサート取付座が形成され、このインサート取付座に旋削用インサートがさらに着脱可能に取り付けられる交換式旋削加工用ヘッドであって、上記ヘッド本体には、上記クランプネジの頭部が通り抜け可能な内径の貫通穴部と、この貫通穴部から上記ヘッド本体の先端側に向けて延設され、上記頭部が通り抜け不可能で上記クランプネジの軸部が通り抜け可能な溝幅の貫通溝部とを備えた取付穴が形成されるとともに、この取付穴よりも先端側には、上記ホルダ先端部に設けられた嵌合部に対して、上記取付穴の上記貫通穴部から上記貫通溝部が延設された方向に平行な方向に挿脱可能とされて嵌合させられる被嵌合部が設けられていることを特徴とする。   In order to solve the above-described problems and achieve such an object, the replaceable turning head of the present invention is inserted into the tip of the head body that is detachably attached to the tip of the holder of the turning tool by a clamp screw. An interchangeable turning head in which a mounting seat is formed and a turning insert is further detachably attached to the insert mounting seat. The head body has an inner diameter through which the head of the clamp screw can pass. Mounting provided with a hole and a through-groove having a groove width that extends from the through-hole toward the front end side of the head main body, the head cannot pass through, and the shaft of the clamp screw can pass through. A hole is formed, and the through-groove portion from the through-hole portion of the mounting hole to the fitting portion provided at the front-end portion of the holder is closer to the tip side than the mounting hole. Wherein the fitted portion to be fitted can be inserted and removed in a direction parallel to the setting has been direction.

また、本発明のヘッド交換式旋削工具は、このような交換式旋削加工用ヘッドがホルダ先端部に上記クランプネジによって着脱可能に取り付けられていることを特徴とする。   Further, the replaceable turning tool of the present invention is characterized in that such a replaceable turning head is detachably attached to the holder tip by the clamp screw.

このように構成された交換式旋削加工用ヘッドでは、クランプネジが挿通されてホルダにねじ込まれることによりヘッド本体をホルダ先端部に取り付ける取付穴が、このクランプネジの頭部が通り抜け可能な内径の貫通穴部と、この貫通穴部からヘッド本体の先端側に向けて延設され、頭部が通り抜け不可能でクランプネジの軸部が通り抜け可能な溝幅の貫通溝部とを備えた、いわゆるダルマ穴形状とされている。   In the replaceable turning head configured as described above, the mounting hole for attaching the head body to the tip of the holder when the clamp screw is inserted and screwed into the holder has an inner diameter that allows the head of the clamp screw to pass through. A so-called dharma provided with a through-hole part and a through-groove part extending from the through-hole part toward the front end side of the head body and having a groove width through which the head part cannot pass and the shaft part of the clamp screw can pass. It has a hole shape.

従って、ヘッド本体をホルダ先端部に取り付ける際には、クランプネジをホルダにねじ込んだまま僅かに緩めておき、取付穴の貫通穴部にクランプネジの頭部を通り抜けさせてから、貫通溝部が延設された方向に沿ってヘッド本体をホルダに対し後端側にスライドさせることにより、クランプネジの軸部が取付穴の貫通溝部に入り込むので、この状態でクランプネジをねじ込むことによってクランプネジの頭部が貫通溝部の開溝部を押圧してヘッド本体がホルダ先端部に取り付けられる。   Therefore, when attaching the head body to the tip of the holder, the clamp screw is slightly loosened while being screwed into the holder, and the through groove is extended after the head of the clamp screw passes through the through hole of the attachment hole. By sliding the head body to the rear end side with respect to the holder along the set direction, the shaft part of the clamp screw enters the through groove part of the mounting hole. By screwing the clamp screw in this state, the head of the clamp screw The portion presses the open groove portion of the through groove portion, and the head main body is attached to the tip of the holder.

また、ヘッド本体を取り外すときは、これとは逆にクランプネジを緩めてヘッド本体をホルダ先端側にスライドさせることにより、クランプネジの頭部が取付穴の貫通穴部に位置したところで取付穴から抜き出し可能となるので、クランプネジをホルダから抜き外すことなくヘッド本体を取り外すことができる。このため、ヘッド本体の着脱、交換を短時間で容易に行うことができるとともに、クランプネジはホルダにねじ込んだままとしておくことができるので紛失するおそれもない。   Also, when removing the head body, on the contrary, loosen the clamp screw and slide the head body toward the tip of the holder so that the head of the clamp screw is positioned at the through hole of the mounting hole. Since it can be extracted, the head body can be removed without removing the clamp screw from the holder. For this reason, the head body can be easily attached and detached in a short time, and the clamp screw can be left screwed into the holder, so there is no risk of losing it.

さらに、ヘッド本体の取付穴よりも先端側には、ホルダ先端部に設けられた嵌合部に対して、取付穴の貫通穴部から貫通溝部が延設された方向に平行な方向に挿脱可能とされて嵌合させられる被嵌合部が設けられており、上述のようにホルダ先端部に取り付ける際にヘッド本体を貫通溝部が延設された方向に沿ってホルダの後端側にスライドさせたときには、この延設方向に平行な方向に被嵌合部が嵌合部に嵌め入れられて嵌合させられる。   Further, on the front end side of the mounting hole of the head body, with respect to the fitting portion provided at the tip of the holder, the insertion and removal is performed in a direction parallel to the direction in which the through groove portion extends from the through hole portion of the mounting hole. A fitting portion is provided that can be fitted, and when the head body is attached to the tip of the holder as described above, the head body is slid toward the rear end of the holder along the direction in which the through groove is extended. When this is done, the fitted portion is fitted into the fitting portion in a direction parallel to the extending direction and is fitted.

従って、この被嵌合部が設けられたヘッド本体の取付穴よりも先端側の部分は、上記延設方向に平行な方向以外の方向には拘束されることになって、ヘッド本体の取付剛性を向上させることができる。このため、このヘッド本体の先端部に形成されたインサート取付座に取り付けられた旋削用インサートに旋削加工時に負荷が作用しても、ヘッド本体にがたつきが生じるのを防いで高い加工精度を得ることができる。   Accordingly, the portion on the tip side of the mounting hole of the head body provided with the fitted portion is constrained in a direction other than the direction parallel to the extending direction, so that the mounting rigidity of the head body is reduced. Can be improved. For this reason, even if a load is applied to the turning insert attached to the insert mounting seat formed at the tip of the head body during turning, high heading accuracy is prevented by preventing the head body from rattling. Can be obtained.

また、ヘッド本体に、取付穴の貫通穴部が貫通する方向に突出してホルダの嵌合部が設けられた端面に後端面が当接させられるフランジ部を形成し、このフランジ部の後端側を向く壁面に被嵌合部を設けることにより、上述のように被嵌合部を嵌合部に嵌合させつつヘッド本体を後退させてホルダ先端部に取り付けた際に、上記フランジ部の後端側を向く壁面をホルダの上記端面に当接させることができるので、ヘッド本体の取付剛性を一層向上させてさらに高精度の可能を行うことができる。   Further, a flange portion is formed on the head body so that the rear end surface is brought into contact with the end surface provided with the fitting portion of the holder protruding in the direction in which the through hole portion of the mounting hole passes, and the rear end side of the flange portion By providing the mated part on the wall facing the rear side of the flange part when the head body is retracted and attached to the tip of the holder while the mated part is fitted to the mating part as described above. Since the wall surface facing the end side can be brought into contact with the end surface of the holder, the mounting rigidity of the head main body can be further improved and higher accuracy can be achieved.

さらに、ヘッド本体の先端部に、上記取付穴の貫通穴部が貫通する方向に厚さ方向を有する板状の上顎部と下顎部とを形成し、上記インサート取付座をこれら上顎部と下顎部との間に形成するようにして、上記旋削用インサートを、上記上顎部と下顎部の厚さよりも上記厚さ方向に大きな長さの切刃を有する突っ切り用または溝入れ用の旋削用インサートとすることにより、旋削加工時にヘッド本体には旋削加工用インサートの切刃が延びる方向に負荷が作用しないようにすることができるので、ヘッド本体のがたつきを一層確実に防止して加工精度の向上を図ることができる。   Furthermore, a plate-like upper jaw part and lower jaw part having a thickness direction in a direction in which the through hole part of the mounting hole passes through are formed at the distal end part of the head body, and the insert mounting seat is connected to the upper jaw part and the lower jaw part. A turning insert for parting or grooving having a cutting blade having a length longer in the thickness direction than the thickness of the upper jaw and the lower jaw. By doing so, it is possible to prevent a load from acting on the head body in the direction in which the cutting blade of the turning insert extends in the turning process. Improvements can be made.

以上説明したように、本発明によれば、クランプネジを完全に抜き外すことなくヘッド本体をホルダに着脱することが可能であり、ヘッド本体の交換を短時間で容易に行うことができるとともに、ホルダへのヘッド本体の取付剛性を向上させてがたつきを防ぎ、高精度の旋削加工を行うことができる。   As described above, according to the present invention, the head body can be attached to and detached from the holder without completely removing the clamp screw, and the head body can be easily replaced in a short time. The mounting rigidity of the head body to the holder can be improved to prevent rattling, and high-precision turning can be performed.

本発明のヘッド交換式旋削工具の一実施形態を示す斜視図である。It is a perspective view showing one embodiment of a head exchange type turning tool of the present invention. 図１に示す実施形態を前後反対側から見た斜視図である。It is the perspective view which looked at the embodiment shown in FIG. 1 from the front and back opposite side. 図１に示す実施形態の先端部の（ａ）平面図、（ｂ）右側面図、（ｃ）正面図である。It is (a) top view of the front-end | tip part of embodiment shown in FIG. 1, (b) Right view, (c) It is a front view. 図１に示す実施形態の分解斜視図である。It is a disassembled perspective view of embodiment shown in FIG. 図１に示す実施形態の図４とは前後反対側から見た分解斜視図である。It is the disassembled perspective view seen from FIG. 4 of the embodiment shown in FIG. 図１に示す実施形態のホルダに取り付けられる本発明の交換式旋削加工用ヘッドの一実施形態の（ａ）正面図、（ｂ）右側面図、（ｃ）背面図、（ｄ）左側面図である。(A) Front view, (b) Right side view, (c) Rear view, (d) Left side view of one embodiment of the exchangeable turning head of the present invention attached to the holder of the embodiment shown in FIG. It is.

図１ないし図５は、本発明のヘッド交換式旋削工具の一実施形態を示すものであり、図６は、この一実施形態のヘッド交換式旋削工具のホルダ先端部に取り付けられる本発明の交換式旋削加工用ヘッドの一実施形態を示すものである。本実施形態において、交換式旋削加工用ヘッドのヘッド本体１とヘッド交換式旋削工具のホルダ１１とは、ともに鋼材等の金属材料によってそれぞれ一体に形成され、ホルダ１１の先端部（図１、図４において左下側部分、図２、図５において右上側部分、図３（ａ）、（ｂ）において左側部分）に形成されたヘッド取付座１２にヘッド本体１がクランプネジ１３によって着脱可能に取り付けられる。   FIGS. 1 to 5 show an embodiment of the head replaceable turning tool of the present invention, and FIG. 6 shows an exchange of the present invention attached to the tip of the holder of the head replaceable turning tool of this embodiment. 1 shows an embodiment of a head for type turning. In the present embodiment, the head body 1 of the exchangeable turning head and the holder 11 of the head exchangeable turning tool are both integrally formed of a metal material such as a steel material, and the tip of the holder 11 (FIG. 1, FIG. The head main body 1 is detachably attached to the head mounting seat 12 formed on the lower left side portion 4, the upper right side portion in FIGS. 2 and 5, and the left side portion in FIGS. 3 (a) and 3 (b) with a clamp screw 13. It is done.

ヘッド本体１は、その先端部（図６（ｂ）において左側部分、図６（ｄ）において右側部分）に形成された互いに等しい厚さの平板状の上顎部２および下顎部３と、後端部（図６（ｂ）において右側部分、図６（ｄ）において左側部分）に形成された上下顎部２、３よりも厚肉の平板状の取付部４と、取付部４の下顎部３との境界部から該取付部４がなす平板の厚さ方向（図３（ａ）において上下方向、図３（ｃ）、図６（ａ）および図６（ｃ）において左右方向）のうち一方の側（図３（ａ）において上側、図３（ｃ）および（図６（ａ）において左側、図６（ｃ）において右側）に取付部４に対して垂直に突出するように形成されたやはり平板状のフランジ部５とを備えている。上下顎部２、３と取付部４の上記厚さ方向の他方の側（図３（ａ）において下側、図３（ｃ）および図６（ａ）において右側、図６（ｃ）において左側）を向く他側面は面一とされており、従って取付部４の厚さ方向の一方の側を向く一側面は上下顎部２、３の同じ一方の側を向く一側面よりもこの一方の側に突出させられている。   The head main body 1 has a flat upper and lower jaws 2 and 3 having a thickness equal to each other formed at the front end thereof (the left part in FIG. 6B and the right part in FIG. 6D), and the rear end. A flat plate-like attachment portion 4 thicker than the upper and lower jaw portions 2 and 3 formed on the portion (the right portion in FIG. 6B and the left portion in FIG. 6D), and the lower jaw portion 3 of the attachment portion 4 One of the thickness directions of the flat plate formed by the mounting portion 4 from the boundary portion (vertical direction in FIG. 3A, left-right direction in FIGS. 3C, 6A, and 6C) 3a (upper side in FIG. 3 (a), FIG. 3 (c) and (left side in FIG. 6 (a), right side in FIG. 6 (c)). It is also provided with a flat flange portion 5. The other side in the thickness direction of the upper and lower jaw portions 2, 3 and the mounting portion 4 (see FIG. The other side faces (the lower side in (a), the right side in FIGS. 3 (c) and 6 (a), the left side in FIG. 6 (c)) are flush with each other. One side surface facing one side is protruded to this one side rather than one side surface facing the same one side of the upper and lower jaws 2 and 3.

そして、このヘッド本体１の取付部４には、上記クランプネジ１３の頭部１３ａが通り抜け可能な内径で、取付部４をその上記厚さ方向に貫通する貫通穴部６ａと、この貫通穴部６ａからヘッド本体１の先端側に向けて延設され、上記頭部１３ａが通り抜け不可能でクランプネジ１３の雄ネジが形成された軸部１３ｂが通り抜け可能な溝幅の貫通溝部６ｂとを備えた取付穴６が形成されている。すなわち、貫通穴部６ａの内径は頭部１３ａの外径よりも僅かに大きくされ、貫通溝部６ｂの溝幅は頭部１３ａの外径よりも小さく、従って貫通穴部６ａの内径（直径）よりも小さく、軸部１３ｂの外径よりは僅かに大きくされている。   The mounting portion 4 of the head body 1 has a through-hole portion 6a that penetrates the mounting portion 4 in the thickness direction with an inner diameter that allows the head portion 13a of the clamp screw 13 to pass through, and the through-hole portion. A through-groove portion 6b having a groove width extending from 6a toward the distal end side of the head main body 1 and through which the shaft portion 13b through which the head portion 13a cannot pass and the male screw of the clamp screw 13 is formed can be passed. A mounting hole 6 is formed. That is, the inner diameter of the through hole portion 6a is slightly larger than the outer diameter of the head portion 13a, and the groove width of the through groove portion 6b is smaller than the outer diameter of the head portion 13a. And is slightly larger than the outer diameter of the shaft portion 13b.

貫通溝部６ｂは溝幅が一定とされ、この溝幅の中心が貫通穴部６ａの中心線を通って先端側に延びる仮想平面上に位置するようにされている。また、貫通溝部６ｂの先端部は、この仮想平面上に中心線を有して直径が貫通溝部６ｂの溝幅と等しく、従って貫通穴部６ａの直径よりも小さくされた先端側に凸となる断面半円弧状とされており、すなわち、取付穴６は、ヘッド本体１の側面視において図６（ｂ）および図６（ｄ）に示すように、いわゆるダルマ穴形状とされている。   The through groove 6b has a constant groove width, and the center of the groove width is positioned on a virtual plane that extends to the front end side through the center line of the through hole 6a. The tip of the through groove 6b has a center line on this virtual plane and has a diameter equal to the groove width of the through groove 6b. Therefore, the tip of the through groove 6b is convex toward the tip which is smaller than the diameter of the through hole 6a. The mounting hole 6 has a so-called Dalma hole shape as shown in FIGS. 6B and 6D in a side view of the head body 1.

また、貫通穴部６ａは上下顎部２、３および取付部４の厚さ方向に貫通するように、取付部４の上記一側面と他側面との間に亙って一定の内径で形成されているのに対し、貫通溝部６ｂは取付部４の他側面側だけに形成されている。すなわち、取付穴６の他側面先端側の内周には、図６（ｂ）に示すようなＵ字状の取付壁部６ｃが取付部４の上記他側面から後退した位置に形成され、貫通溝部６ｂはこの取付壁部６ｃの内側に形成されることになる。   Further, the through-hole portion 6a is formed with a constant inner diameter between the one side surface and the other side surface of the attachment portion 4 so as to penetrate in the thickness direction of the upper and lower jaw portions 2, 3 and the attachment portion 4. On the other hand, the through groove 6b is formed only on the other side of the mounting portion 4. That is, a U-shaped mounting wall portion 6c as shown in FIG. 6B is formed at a position retracted from the other side surface of the mounting portion 4 on the inner periphery of the mounting hole 6 on the front side of the other side surface. The groove 6b is formed inside the mounting wall 6c.

なお、取付壁部６ｃの上記一方の側を向く端面は、図６（ｄ）に示すように取付部４の上記一側面と面一とされている。これに対して、貫通溝部６ｂの上記他方の側の開溝部となる取付壁部６ｃの該他方の側を向くＵ字状の端面は、先端側が、貫通溝部６ｂの断面がなす上記半円弧の中心線側に向かうに従い上記一方の側に向かうように凹む上記中心線を中心とした凹円錐面状とされるとともに、この凹円錐面と上記貫通穴部６ａとの間の部分は、該凹円錐面の上記中心線に沿った断面における傾斜と等しい傾斜で内側の貫通溝部６ｂ側に向かうに従い上記一方の側に向かう傾斜平面とされている。   Note that the end surface of the mounting wall portion 6c facing the one side is flush with the one side surface of the mounting portion 4 as shown in FIG. 6 (d). On the other hand, the U-shaped end surface facing the other side of the mounting wall portion 6c serving as the open groove portion on the other side of the through groove portion 6b has the semicircular arc formed on the tip side of the cross section of the through groove portion 6b. And a concave conical surface centered on the center line that is recessed toward the one side as it goes toward the center line side, and a portion between the concave conical surface and the through hole 6a is The inclined conical surface is an inclined plane that faces the one side as it goes toward the inner through-groove 6b side with an inclination equal to the inclination in the cross section along the center line.

さらに、この取付壁部６ｃよりも上記他方の側の取付部４の他側面における取付穴６の開口部は、先端部が、貫通溝部６ｂ先端部の断面がなす半円弧の中心線と同軸で、貫通穴部６ａと等しい内径で先端側に凸となる断面半円弧状とされるとともに、この半円弧と上記貫通穴部６ａとの間の部分は、貫通穴部６ａの内径（直径）と等しい一定の溝幅で延びる溝状とされている。取付部４の他側面から取付壁部６ｃの上記他方の側を向く端面までの、取付穴６の上記先端側開口部の深さは、クランプネジ１３の頭部１３ａの厚さよりも大きくされ、この先端側開口部に頭部１３ａが収容可能とされている。   Further, the opening of the mounting hole 6 on the other side surface of the mounting portion 4 on the other side of the mounting wall 6c is coaxial with the center line of the semicircular arc formed by the cross section of the tip of the through groove 6b. In addition, the inner diameter is equal to the through-hole portion 6a and the cross-section is a semicircular arc shape that protrudes toward the tip side. The portion between the semicircular arc and the through-hole portion 6a The groove shape extends with an equal constant groove width. The depth of the opening on the distal end side of the mounting hole 6 from the other side surface of the mounting portion 4 to the end surface facing the other side of the mounting wall portion 6c is made larger than the thickness of the head 13a of the clamp screw 13, The head 13a can be accommodated in the distal end side opening.

本実施形態では、このような取付穴６が取付部４に複数形成されている。具体的に、本実施形態のヘッド本体１には同径同大の３つの取付穴６が、その貫通穴部６ａの中心線が上記厚さ方向から見て図６（ｂ）および図６（ｄ）に示すように三角形（二等辺三角形）の頂点に位置するように形成されており、このうち２つの取付穴６は、貫通溝部６ｂの溝幅の中心が位置する上記仮想平面が一致するようにして前後に間隔をあけて形成され、残りの１つの取付穴６は、これら２つの取付穴６の間の部分の上側に位置して、その貫通溝部６ｂの溝幅の中心が位置する上記仮想平面が、２つの取付穴６の一致した上記仮想平面と平行となるように形成されている。   In the present embodiment, a plurality of such attachment holes 6 are formed in the attachment portion 4. Specifically, the head main body 1 of the present embodiment has three mounting holes 6 having the same diameter and the same size, and the center line of the through hole 6a is viewed from the thickness direction as shown in FIGS. As shown in d), it is formed so as to be located at the apex of a triangle (isosceles triangle), and two of these mounting holes 6 coincide with the virtual plane where the center of the groove width of the through groove 6b is located. Thus, the remaining one mounting hole 6 is positioned above the portion between the two mounting holes 6 and the center of the groove width of the through groove 6b is positioned. The virtual plane is formed so as to be parallel to the virtual plane where the two mounting holes 6 coincide.

なお、取付部４とフランジ部５の上下面および下顎部３の下面は上記仮想平面に平行な平面状とされている。また、取付部４の後端面は、上側の取付穴６と下側の後端側の取付穴６の位置に合わせ、上下方向に延びる段差面と上記仮想平面に平行な階段面とが交互に形成されて下方に向かうに従い段階的に後端側に突出する本実施形態では３段の階段状とされている。   In addition, the upper and lower surfaces of the attachment portion 4 and the flange portion 5 and the lower surface of the lower jaw portion 3 are formed in a planar shape parallel to the virtual plane. In addition, the rear end surface of the mounting portion 4 is alternately provided with step surfaces extending in the vertical direction and step surfaces parallel to the virtual plane in accordance with the positions of the upper mounting holes 6 and the lower rear end mounting holes 6. In the present embodiment, which is formed and protrudes stepwise toward the rear end side as it goes downward, it has a three-step shape.

さらに、取付部４の上面と上記一側面との交差稜線部には段付きの切欠部４ａが形成されている。この切欠部４ａは、下方に向かうに従い取付部４の上記一方の側に向けて延びる中心線を取付部４の一側面よりもこの一方の側に有する、下方に向けて外径が一段縮径する２段の円筒面の一部をなすように形成されて、取付部４の上面から一側面に切れ上がっており、これらの円筒面の間にはその中心線に垂直な段差面が形成されている。   Further, a stepped notch 4a is formed at the intersecting ridge line portion between the upper surface of the mounting portion 4 and the one side surface. This notch portion 4a has a center line extending toward the one side of the mounting portion 4 on the one side rather than one side surface of the mounting portion 4 as it goes downward. Are formed so as to form a part of the two-stage cylindrical surface, and are cut off from the upper surface of the mounting portion 4 to one side surface, and a step surface perpendicular to the center line is formed between these cylindrical surfaces. ing.

ヘッド本体１の上記上顎部２は、取付部４の先端面上部から先端側に突出し、先端側に向かうに従い先端面が下方に傾斜する三角形平板状をなしている。また、上顎部２の下面は上記仮想平面に平行に前後方向（図６（ｂ）および図６（ｄ）において左右方向）に延びており、ただしこの前後方向に直交する断面においては、上顎部２の厚さ方向の中心に二等分線を有して下方に凸となるＶ字状をなしている。   The upper jaw portion 2 of the head body 1 has a triangular flat plate shape that protrudes from the upper end surface of the mounting portion 4 to the front end side, and the front end surface is inclined downward toward the front end side. Further, the lower surface of the upper jaw 2 extends in the front-rear direction (the left-right direction in FIGS. 6B and 6D) parallel to the virtual plane, but in the cross section orthogonal to the front-rear direction, the upper jaw 2 has a bisector at the center in the thickness direction and has a V-shape projecting downward.

一方、下顎部３は、上下の幅が上顎部２よりも大きくされて取付部４の先端面下部から先端側に上顎部２よりも大きく突出するようにされ形成され、この下顎部３の先端面は下方に向かうに従いヘッド本体１の後端側に向かう凸曲面状または多段傾斜面状とされている。また、この下顎部３の上面は、上顎部２の下面と間隔をあけて対向して、上顎部２下面と同じく上記仮想平面に平行に前後方向に延びており、この前後方向に直交する断面においては、上顎部２下面の凸Ｖ字がなす二等分線と一致する二等分線を有して上方に凸となるＶ字状をなしている。   On the other hand, the lower jaw portion 3 is formed so that the vertical width is larger than that of the upper jaw portion 2 and protrudes larger than the upper jaw portion 2 from the lower end surface of the mounting portion 4 to the distal end side. The surface has a convex curved surface shape or a multi-step inclined surface shape toward the rear end side of the head body 1 as it goes downward. Further, the upper surface of the lower jaw part 3 is opposed to the lower surface of the upper jaw part 2 with a space therebetween, and extends in the front-rear direction in parallel to the virtual plane like the lower surface of the upper jaw part 2, and is a cross section orthogonal to the front-rear direction. , The upper jaw 2 has a V-shape that has a bisector that coincides with the bisector formed by the convex V-shape of the lower surface of the upper jaw 2 and is convex upward.

このように互いに断面凸Ｖ字状に形成された上顎部２の下面と下顎部３の上面との間の部分は、下顎部３上面を着座面とするとともに上顎部２下面を押圧面とするインサート取付座７とされる。このインサート取付座７の後端部には、上顎部２の下面側に円弧状をなして凹む逃げ部７ａが、下顎部３の上面側には先端側に突出する当接部７ｂが形成されており、さらにこれら逃げ部７ａと当接部７ｂとの間から後端側にかけては、上記仮想平面に平行にスリット７ｃが取付部４の上側の取付穴６の手前まで延びている。   The portion between the lower surface of the upper jaw part 2 and the upper surface of the lower jaw part 3 formed in a V-shaped cross section in this way has the upper surface of the lower jaw part 3 as a seating surface and the lower surface of the upper jaw part 2 as a pressing surface. The insert mounting seat 7 is used. In the rear end portion of the insert mounting seat 7, a relief portion 7 a that is recessed in an arc shape on the lower surface side of the upper jaw portion 2 is formed, and on the upper surface side of the lower jaw portion 3, a contact portion 7 b that protrudes toward the distal end side is formed. In addition, a slit 7c extends in front of the mounting hole 6 on the upper side of the mounting portion 4 in parallel to the virtual plane from between the clearance 7a and the contact portion 7b to the rear end side.

また、上記フランジ部５は先端側から見て図６（ａ）に示すように上下方向に延びる略長方形の平板状をなして、上記前後方向に垂直に下顎部３と取付部４の境界部から上記一方の側に突出しており、ただし、この一方の側に突出した一側面と上下面との交差稜線部は鈍角に面取りされている。さらに、このフランジ部５の下面と下顎部３の下面とは図６（ｄ）に示すように取付部４の下面よりも一段下方に突出させられていて、フランジ部５の下面と取付部４の下面との間はフランジ部５の後端側を向く壁面によって上記前後方向に垂直にＬ字状に切り欠かれている。   The flange portion 5 has a substantially rectangular flat plate shape extending in the vertical direction as shown in FIG. 6A when viewed from the front end side, and is a boundary portion between the lower jaw portion 3 and the mounting portion 4 perpendicular to the front-rear direction. However, the intersecting ridge line portion between one side surface and the upper and lower surfaces protruding to one side is chamfered at an obtuse angle. Further, the lower surface of the flange portion 5 and the lower surface of the lower jaw portion 3 are projected one step lower than the lower surface of the mounting portion 4 as shown in FIG. Is cut out in an L shape perpendicular to the front-rear direction by a wall surface facing the rear end side of the flange portion 5.

そして、このフランジ部５の後端側を向く壁面には、ホルダ１１の先端部に設けられた後述する嵌合部に対して、上記取付穴６の貫通穴部６ａから貫通溝部６ｂが延設された方向に平行な方向（本実施形態では、上記仮想平面に平行な上記前後方向）に挿脱可能とされて嵌合させられる被嵌合部５ａが設けられている。ここで、本実施形態では、この被嵌合部５ａは、フランジ部５の後端側を向く上記壁面に形成された一定内径の止まり穴状の断面円形穴であり、同径同大のこのような円形穴が上下に並んで２つ形成されている。   A through-groove portion 6b extends from the through-hole portion 6a of the mounting hole 6 on the wall surface facing the rear end side of the flange portion 5 with respect to a fitting portion described later provided at the front end portion of the holder 11. A fitted portion 5a is provided that can be inserted and removed in a direction parallel to the formed direction (in the present embodiment, the front-rear direction parallel to the virtual plane). Here, in the present embodiment, the fitted portion 5a is a blind hole-shaped cross-sectional hole having a constant inner diameter formed on the wall surface facing the rear end side of the flange portion 5, and has the same diameter and the same size. Two such circular holes are formed side by side.

このような交換式旋削加工用ヘッドのヘッド本体１が先端部に取り付けられる上記ホルダ１１は、後端部が断面方形の四角柱状をなすシャンク部１４とされるとともに、先端部上面には突部１１ａが形成され、この突部１１ａからホルダ１１先端部の上記他方の側を向く側面にかけてとホルダ１１の先端面１１ｂとに亙って上記ヘッド取付座１２が形成されている。シャンク部１４の上面１４ａからの突部１１ａの突出高さは、ヘッド本体１の取付部４の後端面における上から１段目の階段面から取付部４上面までの段差面の高さと等しくされている。   The holder 11 to which the head main body 1 of such an exchangeable turning head is attached to the tip is a shank portion 14 having a square pillar shape with a square rear section, and a protrusion on the upper surface of the tip. 11 a is formed, and the head mounting seat 12 is formed from the protruding portion 11 a to the side surface facing the other side of the tip of the holder 11 and the tip surface 11 b of the holder 11. The protrusion height of the protrusion 11a from the upper surface 14a of the shank part 14 is made equal to the height of the step surface from the top step surface to the upper surface of the attachment part 4 on the rear end surface of the attachment part 4 of the head body 1. ing.

このヘッド取付座１２は、ホルダ１１先端部において略ヘッド本体１の取付部４の厚さ分だけシャンク部１４の上記他方の側を向く側面１４ｂから平行に上記一方の側に凹んだ壁面１２ａと、略フランジ部５の上記前後方向の厚さ分だけホルダ１１の先端面１１ｂからシャンク部１４の長手方向後端側に凹んで先端側を向く該長手方向に垂直な壁面１２ｂと、取付部４の下面から取付部４後端面の下から２段目の階段面までの深さ分だけ、シャンク部１４の上面１４ａから平行に下方に凹んだ底面１２ｃと、この底面１２ｃと上記壁面１２ａの後端側に位置する後端凹部１２ｄとを備えている。   The head mounting seat 12 has a wall surface 12a that is recessed in the one side in parallel from the side surface 14b facing the other side of the shank portion 14 by the thickness of the mounting portion 4 of the head body 1 at the tip of the holder 11. A wall surface 12b perpendicular to the longitudinal direction that is recessed from the front end surface 11b of the holder 11 toward the rear end side in the longitudinal direction of the shank portion 14 by the thickness of the flange portion 5 in the front-rear direction, and the mounting portion 4 A bottom surface 12c recessed downward in parallel from the upper surface 14a of the shank portion 14 by a depth from the lower surface of the mounting portion 4 to the second stepped surface from the rear end surface of the mounting portion 4, and the rear surface of the bottom surface 12c and the wall surface 12a. And a rear end recess 12d located on the end side.

従って、壁面１２ａおよび底面１２ｃと壁面１２ｂとは直交し、また壁面１２ａと底面１２ｃも直交する方向に延びている。また、後端凹部１２ｄは壁面１２ａに対向する側面視において図３（ｂ）に示すように先端側に向けて開口した「コ」字状をなしており、壁面１２ｂからの後退量が、ヘッド本体１のフランジ部５の後端側を向く壁面から取付部４の後端面がなす下から２段の段差面までの長さよりも大きくなるようにされるとともに、底面１２ｃからの幅が取付部４の下面から取付部４後端面の下から１段目の階段面までの幅よりも大きくなるようにされている。   Therefore, the wall surface 12a, the bottom surface 12c, and the wall surface 12b are orthogonal to each other, and the wall surface 12a and the bottom surface 12c also extend in the orthogonal direction. Further, the rear end concave portion 12d has a “U” shape opened toward the front end side as shown in FIG. 3B in a side view facing the wall surface 12a. The length from the wall surface facing the rear end side of the flange portion 5 of the main body 1 to the lower step surface formed by the rear end surface of the attachment portion 4 is made larger than the length from the bottom surface 12c. The width from the lower surface of 4 to the first step surface from the bottom of the rear end surface of the mounting portion 4 is made larger.

さらに、底面１２ｃとホルダ１１の下面との間隔は、ヘッド本体１の下顎部３の下面と取付部４の下面との間隔と略等しくされている。また、壁面１２ｂはホルダ１１の下面に達するように形成されてホルダ１１の先端側から見てＬ字状をなしており、この壁面１２ｂとホルダ１１の先端面１１ｂとの間には、底面１２ｃと平行とされて下方を向く壁面１２ｅと、壁面１２ａと平行に上記他方の側を向いて上下方向に延びる壁面１２ｆとが形成されている。壁面１２ａと壁面１２ｆとの間隔および壁面１２ｅとホルダ１１の下面との間隔は、フランジ部５を先端側から見たときの上記長方形の短辺および長辺の長さよりも各々僅かに大きくされている。   Further, the distance between the bottom surface 12 c and the lower surface of the holder 11 is substantially equal to the distance between the lower surface of the lower jaw portion 3 of the head body 1 and the lower surface of the mounting portion 4. The wall surface 12 b is formed so as to reach the lower surface of the holder 11 and has an L shape when viewed from the front end side of the holder 11. A bottom surface 12 c is formed between the wall surface 12 b and the front end surface 11 b of the holder 11. A wall surface 12e that is parallel to the wall and faces downward, and a wall surface 12f that extends in the vertical direction facing the other side in parallel with the wall surface 12a are formed. The distance between the wall surface 12a and the wall surface 12f and the distance between the wall surface 12e and the lower surface of the holder 11 are slightly larger than the lengths of the short side and the long side of the rectangle when the flange portion 5 is viewed from the front end side. Yes.

ヘッド取付座１２の壁面１２ａには、ヘッド本体１の取付穴６と同数（本実施形態では３つ）のネジ穴１５が該壁面１２ａに垂直に穿設されている。これらのネジ穴１５は、その中心が、ヘッド本体１の取付部４の上記一側面を壁面１２ａに密着させるとともに取付部４の下面を底面１２ｃに密着させ、さらにフランジ部５の後端側を向く壁面を壁面１２ｂに密着させてヘッド本体１をヘッド取付座１２に着座させた着座状態において、各取付穴６の貫通溝部６ｂの先端内周部の断面がなす半円弧の中心とそれぞれ一致するように配置されている。   The same number (three in this embodiment) of screw holes 15 as the mounting holes 6 of the head body 1 are formed in the wall surface 12a of the head mounting seat 12 perpendicularly to the wall surface 12a. The center of these screw holes 15 is such that the one side surface of the mounting portion 4 of the head body 1 is in close contact with the wall surface 12a, the lower surface of the mounting portion 4 is in close contact with the bottom surface 12c, and the rear end side of the flange portion 5 is In the seated state where the head wall 1 is seated on the head mounting seat 12 with the facing wall surface in close contact with the wall surface 12b, the center of the semicircular arc formed by the cross section of the tip inner peripheral portion of the through groove 6b of each mounting hole 6 is coincident with each other. Are arranged as follows.

また、ヘッド取付座１２の壁面１２ｂにも、ヘッド本体１のフランジ部５の後端側を向く壁面に形成された被嵌合部５ａとしての円形穴と同数のネジ穴１６が、上記着座状態において該円形穴とそれぞれ同軸となるように、該壁面１２ｂに垂直に穿設されている。そして、これらのネジ穴１６には嵌合ネジ１７が、その頭部を壁面１２ｂから突出させてねじ込まれており、この嵌合ネジ１７の頭部がホルダ１１の嵌合部１７ａとされる。   Further, the wall surface 12b of the head mounting seat 12 also has the same number of screw holes 16 as the circular holes as the fitted portions 5a formed on the wall surface facing the rear end side of the flange portion 5 of the head main body 1 in the seating state. In FIG. 2, the wall surface 12b is formed so as to be coaxial with the circular hole. Then, fitting screws 17 are screwed into these screw holes 16 with their heads protruding from the wall surface 12 b, and the heads of the fitting screws 17 serve as fitting portions 17 a of the holder 11.

ここで、この嵌合部１７ａとされる嵌合ネジ１７の頭部は、被嵌合部５ａとされる円形穴に嵌合可能な外径を有するとともに、壁面１２ｂからの突出量が、取付穴６の貫通穴部６ａの中心線から貫通溝部６ｂの先端内周部の断面がなす半円弧の中心線までの間隔よりも小さく、またフランジ部５の後端側を向く壁面から被嵌合部５ａとされる円形穴の穴底までの深さよりも小さくなるようにされている。   Here, the head of the fitting screw 17 that is the fitting portion 17a has an outer diameter that can be fitted into the circular hole that is the fitting portion 5a, and the amount of protrusion from the wall surface 12b is the mounting amount. Fits from the wall surface facing the rear end side of the flange portion 5 which is smaller than the distance from the center line of the through hole portion 6a of the hole 6 to the center line of the semicircular arc formed by the cross section of the inner peripheral portion of the through groove portion 6b. It is made to become smaller than the depth to the hole bottom of the circular hole made into the part 5a.

また、ホルダ１１先端部の上記突部１１ａの上面には座繰り部１８が形成されるとともに、この座繰り部１８の底面から下方に向けてはインサートクランプネジ穴１９が穿設され、このインサートクランプネジ穴１９にインサートクランプネジ２０がねじ込まれる。これら座繰り部１８とインサートクランプネジ穴１９は、上記着座状態においてヘッド本体１に形成された切欠部４ａの上記中心線を中心とするように形成されており、座繰り部１８の底面は同着座状態において切欠部４ａの上記段差面よりもこの中心線方向に後退するようにされている。   Further, a countersink portion 18 is formed on the upper surface of the protrusion 11a at the tip of the holder 11, and an insert clamp screw hole 19 is drilled downward from the bottom surface of the countersink portion 18. An insert clamp screw 20 is screwed into the clamp screw hole 19. The countersink 18 and the insert clamp screw hole 19 are formed so as to be centered on the center line of the notch 4a formed in the head body 1 in the seated state, and the bottom of the countersink 18 is the same. In the seated state, it is set back in the direction of the center line from the stepped surface of the notch 4a.

このようなホルダ１１の上記ヘッド取付座１２に交換式旋削加工用ヘッドのヘッド本体１を取り付けるには、まずネジ穴１５、１６およびインサートクランプネジ穴１９にクランプネジ１３、嵌合ネジ１７、およびインサートクランプネジ２０をねじ込む。ただし、嵌合ネジ１７は嵌合部１７ａとされるその頭部が壁面１２ｂに当接するまでねじ込む一方で、クランプネジ１３は頭部１３ａと壁面１２ａとの間に取付穴６の上記取付壁部６ｃの厚さよりも大きな間隔があけられるように、またインサートクランプネジ２０はその頭部と突部１１ａの上面との間に間隔があけられるように、緩くねじ込んでおく。   In order to attach the head body 1 of the replaceable turning head to the head mounting seat 12 of the holder 11, first, the clamp screw 13, the fitting screw 17, and the screw holes 15, 16 and the insert clamp screw hole 19, and Screw in the insert clamp screw 20. However, the fitting screw 17 is screwed in until the head portion of the fitting portion 17a comes into contact with the wall surface 12b, while the clamp screw 13 is mounted on the attachment wall portion of the attachment hole 6 between the head portion 13a and the wall surface 12a. The insert clamp screw 20 is screwed loosely so that a gap larger than the thickness of 6c is provided, and so that a gap is provided between the head of the insert clamp screw 20 and the upper surface of the protrusion 11a.

この状態において、ヘッド本体１の取付部４の上記一側面をヘッド取付座１２の壁面１２ａに対向させ、各取付穴６の貫通穴部６ａをネジ穴１５にねじ込まれた各クランプネジ１３の頭部１３ａと一致させるようにした上で、頭部１３ａを貫通穴部６ａに通すようにしてヘッド本体１を上記一方の側に移動させ、取付部４の一側面を壁面１２ａに密着させるとともに取付部４の下面を底面１２ｃに密着させる。   In this state, the one side of the mounting portion 4 of the head main body 1 faces the wall surface 12 a of the head mounting seat 12, and the head of each clamp screw 13 screwed in the through hole portion 6 a of each mounting hole 6 into the screw hole 15. The head body 1 is moved to the one side so that the head portion 13a passes through the through hole 6a, and the side surface of the mounting portion 4 is brought into close contact with the wall surface 12a. The lower surface of the portion 4 is brought into close contact with the bottom surface 12c.

このとき、ヘッド本体１のフランジ部５の後端側を向く壁面とヘッド取付座１２の壁面１２ｂとの間には、取付穴６の貫通穴部６ａの中心線から貫通溝部６ｂの先端内周部の断面がなす半円弧の中心線までの間隔と等しい間隔があけられ、嵌合ネジ１７の嵌合部１７ａとされる頭部は、壁面１２ｂからの突出量がこの間隔よりも小さくされているので、ヘッド本体１の移動に嵌合部１７ａが干渉することはない。   At this time, between the wall surface facing the rear end side of the flange portion 5 of the head main body 1 and the wall surface 12b of the head mounting seat 12, from the center line of the through hole portion 6a of the mounting hole 6 to the inner periphery of the tip of the through groove portion 6b. An interval equal to the interval to the center line of the semicircular arc formed by the cross section of the portion is provided, and the head portion that is the fitting portion 17a of the fitting screw 17 has a protruding amount from the wall surface 12b smaller than this interval. Therefore, the fitting portion 17a does not interfere with the movement of the head body 1.

そこで、こうしてヘッド本体１を移動させてから、取付部４の一側面と下面をヘッド取付座１２の壁面１２ａと底面１２ｃ密着させたまま、ヘッド本体１を後端側にスライドさせてフランジ部５の後端側を向く壁面を壁面１２ｂに当接させて密着させる。このとき、クランプネジ１３の軸部１３ｂは取付穴６の貫通溝部６ｂに通り抜けて入り込み、また嵌合部１７ａはフランジ部５の被嵌合部５ａとされた円形穴に収容されて嵌合し、ヘッド本体１は上記着座状態となる。   Therefore, after the head main body 1 is moved in this way, the head main body 1 is slid to the rear end side while the one side surface and the lower surface of the mounting portion 4 are in close contact with the wall surface 12a and the bottom surface 12c of the head mounting seat 12, and the flange portion 5 is moved. The wall surface facing the rear end side is brought into contact with the wall surface 12b and brought into close contact therewith. At this time, the shaft portion 13b of the clamp screw 13 passes through and enters the through groove portion 6b of the mounting hole 6, and the fitting portion 17a is received and fitted in the circular hole that is the fitting portion 5a of the flange portion 5. The head body 1 is in the seated state.

従って、この着座状態からクランプネジ１３をねじ込んで、取付穴６の貫通溝部６ｂの開溝部である取付壁部６ｃの上記他方の側を向く端面を上記一方の側に押圧することにより、ヘッド本体１はホルダ１１のヘッド取付座１２に固定されて本実施形態のヘッド交換式旋削工具が構成される。なお、クランプネジ１３の頭部１３ａの裏面は、ヘッド本体１の取付穴６における取付壁部６ｃの上記他方の側を向く端面の先端側がなす凹円錐面と等しいテーパ角で内周側に向かうに従い凸となる凸円錐面状とされている。   Accordingly, the clamp screw 13 is screwed from this seated state, and the end surface facing the other side of the mounting wall portion 6c, which is an open groove portion of the through groove portion 6b of the mounting hole 6, is pressed to the one side, thereby The main body 1 is fixed to the head mounting seat 12 of the holder 11 to constitute the head exchangeable turning tool of this embodiment. The back surface of the head portion 13a of the clamp screw 13 is directed toward the inner peripheral side with a taper angle equal to the concave conical surface formed by the distal end side of the end surface facing the other side of the mounting wall portion 6c in the mounting hole 6 of the head body 1. The convex conical surface is convex according to the above.

こうしてヘッド本体１がホルダ１１に取り付けられたなら、ヘッド本体１のインサート取付座７に切削インサート２１を取り付ける。この切削インサート２１は、本実施形態では被削材を切断する突っ切り用または被削材に溝入れ加工を施す溝入れ用の旋削用インサートであって、超硬合金等の硬質材料により形成されて概略四角柱状をなしており、その長手方向中央において該長手方向に直交する平面に対して対称形状とされている。また、この切削インサート２１の上面の長手方向中央部と下面は、長手方向に直交する断面において互いの二等分線が一致する凹Ｖ字状に形成されており、これらの凹Ｖ字の挟角は、上顎部２の下面と下顎部３の上面の断面がなす凸Ｖ字の挟角と略等しくされている。   When the head body 1 is thus attached to the holder 11, the cutting insert 21 is attached to the insert mounting seat 7 of the head body 1. In this embodiment, the cutting insert 21 is a cutting insert for cutting off a work material or a grooving insert for grooving a work material, and is formed of a hard material such as cemented carbide. It has a substantially quadrangular prism shape, and is symmetrical with respect to a plane perpendicular to the longitudinal direction at the center in the longitudinal direction. Further, the longitudinal center portion and the lower surface of the upper surface of the cutting insert 21 are formed in a concave V shape in which the bisectors coincide with each other in a cross section orthogonal to the longitudinal direction. The angle is substantially equal to the convex V-shaped included angle formed by the cross section of the lower surface of the upper jaw 2 and the upper surface of the lower jaw 3.

さらに、切削インサート２１の上面の両端部にはすくい面が形成され、このすくい面の長手方向両端縁には切刃２２が形成されている。上記すくい面は、図３（ａ）に示すように切刃２２側に向かうに従い僅かに幅広となる等脚台形状に形成されており、切刃２２はこの等脚台形の幅広となる下底部分に形成されていて、この切刃２２の長さはヘッド本体１の上下顎部２、３の厚さよりも僅かに大きくされている。また、切刃２２から切削インサート２１の下面にかけては順に、逃げ角が与えられた逃げ面とすくい面に垂直な当接面とが形成されている。   Furthermore, a rake face is formed at both ends of the upper surface of the cutting insert 21, and cutting edges 22 are formed at both longitudinal edges of the rake face. The rake face is formed in an isosceles trapezoidal shape that becomes slightly wider toward the cutting edge 22 as shown in FIG. 3 (a), and the cutting edge 22 is a lower bottom that becomes the width of the isosceles trapezoid. The length of the cutting blade 22 is slightly larger than the thickness of the upper and lower jaws 2 and 3 of the head body 1. Further, from the cutting edge 22 to the lower surface of the cutting insert 21, a flank surface provided with a clearance angle and a contact surface perpendicular to the rake surface are formed in order.

このような切削インサート２１は、その長手方向を上記前後方向に向けて断面凹Ｖ字状の上下面をヘッド本体１の断面凸Ｖ字状をなす上下顎部２、３の上下面に摺接させるようにインサート取付座７に先端側から挿入され、後端側に向けられた上記当接面がインサート取付座７の当接部７ｂに当接して着座させられる。さらに、こうして着座されたところで、インサートクランプネジ２０をねじ込むことにより、このインサートクランプネジ２０の頭部が上顎部２の切欠部４ａの段差面に当接し、さらにスリット７ｃが狭められるように取付部４が弾性変形することにより上顎部２が切削インサート２１を押圧して上下顎部２、３によって切削インサート２１が挟み込まれて固定される。   The cutting insert 21 is slidably contacted with the upper and lower surfaces of the upper and lower jaws 2 and 3 having a V-shaped cross section of the head body 1 with the longitudinal direction of the cutting insert 21 facing the longitudinal direction. The abutment surface is inserted into the insert mounting seat 7 from the front end side and directed toward the rear end side so as to abut against the abutting portion 7b of the insert mounting seat 7 and is seated. Further, when the seat is seated in this manner, the insert clamp screw 20 is screwed in so that the head of the insert clamp screw 20 comes into contact with the stepped surface of the cutout portion 4a of the upper jaw 2 and the slit 7c is further narrowed. The upper jaw 2 presses the cutting insert 21 due to the elastic deformation of 4, and the cutting insert 21 is sandwiched and fixed by the upper and lower jaws 2, 3.

このように切削インサート２１が取り付けられたヘッド交換式旋削工具は、回転する被削材の外周側から被削材の回転軸線に垂直に送り出されて切り込まされ、先端側に突き出された上記切刃２２によって被削材外周面に溝入れ加工を施したり、あるいは切刃２２を上記回転軸線まで突っ切って切り込ませることにより被削材の切断加工を行ったりする。すなわち、本実施形態のヘッド交換式旋削工具では、ホルダ１１が被削材の回転軸線方向に送り出されることはない。   The head-exchangeable turning tool to which the cutting insert 21 is attached in this way is fed from the outer peripheral side of the rotating work material perpendicularly to the rotation axis of the work material, cut, and protruded to the tip side. A grooving process is performed on the outer peripheral surface of the work material by the blade 22, or the work material is cut by cutting the cutting blade 22 to the rotation axis. That is, in the head exchange type turning tool of the present embodiment, the holder 11 is not sent out in the direction of the rotation axis of the work material.

また、このように旋削加工を行ううちに、切屑の擦過等による摩耗などによってヘッド本体１が損傷したときにヘッド本体１の交換を行う場合には、インサートクランプネジ２０を緩めて切削インサート２１を取り外した後、クランプネジ１３をネジ穴１５から抜けきらない程度に緩める。そして、ヘッド本体１を取り付けるときとは逆に、ヘッド本体１を先端側にスライドさせることにより、クランプネジ１３の頭部１３ａを取付穴６の貫通穴部６ａに位置させるとともに、を嵌合部１７ａとしての嵌合ネジ１７の頭部から被嵌合部５ａ抜き外して嵌合を解き、次いでヘッド本体１を上記他方の側に移動させることにより、クランプネジ１３の頭部１３ａを貫通穴部６ａから通り抜けさせてホルダ１１からヘッド本体１を取り外すことができる。   In addition, when the head body 1 is to be replaced when the head body 1 is damaged during the turning process as described above due to wear due to scraping or the like, the insert clamp screw 20 is loosened and the cutting insert 21 is removed. After the removal, the clamp screw 13 is loosened to the extent that it cannot be removed from the screw hole 15. Contrary to when the head main body 1 is attached, the head main body 1 is slid to the distal end side so that the head portion 13a of the clamp screw 13 is positioned in the through hole portion 6a of the attachment hole 6, and the fitting portion The portion to be fitted 5a is removed from the head of the fitting screw 17 as 17a to release the fitting, and then the head body 1 is moved to the other side, so that the head 13a of the clamp screw 13 is inserted into the through hole portion. The head main body 1 can be removed from the holder 11 by passing through 6a.

このように、上記構成の交換式旋削加工用ヘッドおよびヘッド交換式旋削工具では、ヘッド本体１の取り外しの際にクランプネジ１３をホルダ１１から抜き外すことなく、ヘッド本体１をホルダ１１から取り外すことができる。また、ヘッド本体１を取り付ける際にも、取り外されたクランプネジ１３をねじ込む場合と比べて少ない回転量でヘッド本体１を固定可能で、しかもねじ込みの初めにクランプネジ１３の雄ネジをネジ穴１４の雌ネジに合わせる煩わしさもない。このため、交換の際のヘッド本体１の着脱に要する時間を短縮するとともに交換作業を容易とすることができ、さらには抜き外されたクランプネジ１３を紛失してしまうおそれもなくなって、経済的かつ効率的である。   As described above, in the replaceable turning head and the head replaceable turning tool configured as described above, the head body 1 is removed from the holder 11 without removing the clamp screw 13 from the holder 11 when the head body 1 is removed. Can do. Further, when the head body 1 is attached, the head body 1 can be fixed with a smaller amount of rotation than when the removed clamp screw 13 is screwed, and the male screw of the clamp screw 13 is screwed into the screw hole 14 at the beginning of screwing. There is no hassle to match the female screw. For this reason, it is possible to shorten the time required for attaching and detaching the head main body 1 at the time of replacement, and to facilitate the replacement work. Further, there is no risk of losing the removed clamp screw 13, which is economical. And efficient.

さらに、上記構成の交換式旋削加工用ヘッドおよびヘッド交換式旋削工具においては、ヘッド本体１の取付穴６よりも先端側に被嵌合部５ａとして円形穴が設けられており、この被嵌合部５ａが、ホルダ１１の先端部に設けられた嵌合部１７ａとしての嵌合ネジ１７の頭部に嵌合させられてヘッド本体１が取り付けられる。このため、これら嵌合部１７ａと被嵌合部５ａとが嵌合する方向以外の方向、すなわち取付穴６の貫通穴部６ａから貫通溝部６ｂが延設された上記前後方向以外の方向にはヘッド本体１の移動が拘束されることになるので、ヘッド本体１のインサート取付座７が形成される特に先端部の取付剛性の向上を図ることができ、このインサート取付座７に取り付けられた切削インサート２１の切刃２２に旋削加工時に作用する負荷によってヘッド本体１にがたつきが生じるのを防いで高精度の加工を行うことができる。   Furthermore, in the replaceable turning head and the replaceable turning tool configured as described above, a circular hole is provided as the fitted portion 5a on the tip side of the mounting hole 6 of the head body 1, and this fitted The head body 1 is attached by fitting the portion 5 a to the head of the fitting screw 17 as the fitting portion 17 a provided at the tip of the holder 11. For this reason, in directions other than the direction in which these fitting parts 17a and the to-be-fitted parts 5a are fitted, that is, directions other than the said front-back direction in which the through-groove part 6b was extended from the through-hole part 6a of the attachment hole 6 Since the movement of the head main body 1 is restricted, it is possible to improve the mounting rigidity of the tip mounting portion of the head main body 1 in particular, and the cutting attached to the insert mounting seat 7. High precision machining can be performed by preventing the head body 1 from rattling due to the load acting on the cutting edge 22 of the insert 21 during turning.

また、本実施形態では、このような嵌合部１７ａと被嵌合部５ａとが複数（２つ）、さらに上記取付穴６とクランプネジ１３も複数（３つ）設けられているので、ヘッド本体１の取付剛性をさらに向上させることができる。なお、本実施形態では、ヘッド本体１側の被嵌合部５ａが断面円形の穴とされるとともに、ホルダ１１側の嵌合部１７ａが、このホルダ１１のネジ穴１６にねじ込まれた嵌合ネジ１７の頭部のような突部とされているが、逆にヘッド本体１側の被嵌合部５ａを突部として、ホルダ１１側に設けられた嵌合部としての穴に嵌合させるようにしてもよい。また、突部は嵌合ネジ１７の頭部ではなく、ホルダ１１またはヘッド本体１に一体に形成されていてもよい。   Further, in the present embodiment, a plurality (two) of such fitting portions 17a and mated portions 5a, and a plurality (three) of the mounting holes 6 and clamp screws 13 are provided. The mounting rigidity of the main body 1 can be further improved. In the present embodiment, the fitted portion 5a on the head body 1 side is a hole having a circular cross section, and the fitting portion 17a on the holder 11 side is screwed into the screw hole 16 of the holder 11 Although it is a protrusion like the head of the screw 17, conversely, the fitted part 5a on the head body 1 side is used as a protrusion and is fitted into a hole as a fitting part provided on the holder 11 side. You may do it. Further, the protrusion may be formed integrally with the holder 11 or the head body 1 instead of the head of the fitting screw 17.

さらに、本実施形態では、上記前後方向に垂直に取付部４の厚さ方向の上記一方の側に突出するように、すなわち取付穴６の貫通穴部６ａが貫通する方向に突出するように、ヘッド本体１にフランジ部５が形成されていて、このフランジ部５の後端側を向く壁面がホルダ１１先端のヘッド取付座１２の壁面１２ｂに当接させられるようにされており、ヘッド本体１の上記被嵌合部５ａはこのフランジ部５の後端側を向く壁面に設けられて、上記壁面１２ｂに設けられた嵌合部１７ａに嵌合可能とされている。従って、こうしてフランジ部５の後端側を向く壁面をホルダ１１の壁面１２ｂに当接させることによっても、ヘッド本体１の特に先端部における取付剛性を向上させることができ、高い加工精度を得ることができる。   Furthermore, in the present embodiment, so as to protrude to the one side in the thickness direction of the mounting portion 4 perpendicular to the front-rear direction, that is, to protrude in the direction in which the through hole portion 6a of the mounting hole 6 passes through. A flange portion 5 is formed on the head body 1, and a wall surface facing the rear end side of the flange portion 5 is brought into contact with the wall surface 12 b of the head mounting seat 12 at the tip of the holder 11. The fitted portion 5a is provided on a wall surface facing the rear end side of the flange portion 5, and can be fitted to a fitting portion 17a provided on the wall surface 12b. Therefore, the mounting rigidity of the head main body 1 especially at the front end portion can be improved by bringing the wall surface facing the rear end side of the flange portion 5 into contact with the wall surface 12b of the holder 11 in this way, and high processing accuracy can be obtained. Can do.

さらにまた、本実施形態では、切削インサート２１は、その切刃２２がインサート取付座７を形成するヘッド本体１の上下顎部２、３の厚さよりも大きな切刃長とされていて、切刃２２によって被削材に形成される溝内に上下顎部２、３を挿入しつつ被削材の溝入れ加工や切断を行う突っ切り用または溝入れ用の旋削用インサートとされている。そして、このような突っ切り用または溝入れ用の切削インサート２１による旋削では、ホルダ１１を被削材の回転軸線方向に送り出す場合のように切刃２２が延びる方向、すなわち上下顎部２、３の厚さ方向や貫通穴部６ａが貫通する方向には切削時の負荷が作用することがないので、ヘッド本体１の取付剛性を一層確実に確保することができ、加工精度のさらなる向上を図ることができる。   Furthermore, in this embodiment, the cutting insert 21 has a cutting edge length that is larger than the thickness of the upper and lower jaw portions 2 and 3 of the head body 1 that forms the insert mounting seat 7. A turning insert for parting or grooving that inserts the upper and lower jaws 2 and 3 into a groove formed in the work material by 22 and performs grooving or cutting of the work material. And in such turning by the cutting insert 21 for parting off or grooving, the direction in which the cutting edge 22 extends, that is, the upper and lower jaw parts 2, 3, as in the case where the holder 11 is fed in the rotation axis direction of the work material. Since the load at the time of cutting does not act in the thickness direction or the direction through which the through hole portion 6a penetrates, the mounting rigidity of the head body 1 can be ensured more reliably, and the processing accuracy can be further improved. Can do.

ただし、本実施形態ではこのように切削インサート２１が突っ切り用または溝入れ用の旋削用インサートとされているが、上述のように上記被嵌合部５ａの嵌合部１７ａへの嵌合によってヘッド本体１の取付剛性が確保されているので、溝入れ加工でもホルダ１１を被削材の回転軸線に垂直な方向と回転軸線方向に交互に送り出して溝幅を広げるような加工に本発明の交換式旋削加工用ヘッドおよびヘッド交換式旋削工具を用いてもよく、また被削材の回転軸線に垂直な方向に切刃を切り込ませつつ該回転軸線方向に送りを与える通常の旋削加工を行う交換式旋削加工用ヘッドおよびヘッド交換式旋削工具に本発明を適用してもよい。   However, in this embodiment, the cutting insert 21 is used as a turning insert for parting off or grooving as described above. However, as described above, the head is formed by fitting the fitting portion 5a to the fitting portion 17a. Since the mounting rigidity of the main body 1 is ensured, even in grooving, the holder 11 is alternately fed in the direction perpendicular to the rotation axis of the work material and in the direction of the rotation axis to increase the groove width. Ordinary lathes may be used, and heads for head turning and head-replaceable lathe tools may be used, and a normal turning process that feeds in the direction of the rotation axis while cutting the cutting blade in a direction perpendicular to the rotation axis of the work material is performed. The present invention may be applied to an exchangeable turning head and a head exchangeable turning tool.

さらに、本実施形態では、取付穴６の貫通溝部６ｂにおける上記他方の側の開溝部となる取付壁部６ｃの該他方の側を向くＵ字状の端面先端側が、貫通溝部６ｂ先端部の断面がなす半円弧の中心線側に向かうに従い一方の側に向かうように凹む上記中心線を中心とした凹円錐面状とされるとともに、この端面先端側に当接するクランプネジ１３の頭部１３ａの裏面は、上記凹円錐面と等しいテーパ角で内周側に向かうに従い凸となる凸円錐面状とされている。このため、突っ切り加工や溝入れ加工の際の送り分力によって切削インサート２１を介してヘッド本体１が後端側に押し付けられると、取付壁部６ｃの上記端面先端側がクランプネジ１３の頭部１３ａの裏面に案内されるようにしてヘッド本体１がヘッド取付座１２の上記壁面１２ａに押し付けられることになるので、さらにヘッド本体１の取付剛性を向上させることができる。   Furthermore, in this embodiment, the U-shaped end surface front end side facing the other side of the mounting wall portion 6c serving as the open groove portion on the other side of the through groove portion 6b of the mounting hole 6 is the front end portion of the through groove portion 6b. The head portion 13a of the clamp screw 13 is a concave conical surface centered on the center line that is recessed toward the one side as it goes toward the center line side of the semicircular arc formed by the cross section, and is in contact with the tip end side of the end surface. The back surface has a convex conical surface shape that becomes convex toward the inner peripheral side at a taper angle equal to that of the concave conical surface. For this reason, when the head body 1 is pressed against the rear end side through the cutting insert 21 by the feed force in the parting-off process or the grooving process, the tip end side of the end face of the mounting wall 6c is the head 13a of the clamp screw 13. Since the head main body 1 is pressed against the wall surface 12a of the head mounting seat 12 as guided by the back surface of the head, the mounting rigidity of the head main body 1 can be further improved.

１ ヘッド本体
２ 上顎部
３ 下顎部
４ 取付部
５ フランジ部
５ａ 被嵌合部
６ 取付穴
６ａ 貫通穴部
６ｂ 貫通溝部
６ｃ 取付壁部
７ インサート取付座
１１ ホルダ
１２ ヘッド取付座
１３ クランプネジ
１３ａ クランプネジ１３の頭部
１３ｂ クランプネジ１３の軸部
１７ 嵌合ネジ
１７ａ 嵌合部
２０ インサートクランプネジ
２１ 切削インサート
２２ 切刃 DESCRIPTION OF SYMBOLS 1 Head main body 2 Upper jaw part 3 Lower jaw part 4 Mounting part 5 Flange part 5a Mated part 6 Mounting hole 6a Through hole part 6b Through groove part 6c Mounting wall part 7 Insert mounting seat 11 Holder 12 Head mounting seat 13 Clamp screw 13a Clamp screw 13 head 13 b shaft portion of clamp screw 13 17 fitting screw 17 a fitting portion 20 insert clamp screw 21 cutting insert 22 cutting blade

Claims (4)

旋削工具のホルダ先端部にクランプネジによって着脱可能に取り付けられるヘッド本体の先端部にインサート取付座が形成され、このインサート取付座に旋削用インサートがさらに着脱可能に取り付けられる交換式旋削加工用ヘッドであって、上記ヘッド本体には、上記クランプネジの頭部が通り抜け可能な内径の貫通穴部と、この貫通穴部から上記ヘッド本体の先端側に向けて延設され、上記頭部が通り抜け不可能で上記クランプネジの軸部が通り抜け可能な溝幅の貫通溝部とを備えた取付穴が形成されるとともに、この取付穴よりも先端側には、上記ホルダ先端部に設けられた嵌合部に対して、上記取付穴の上記貫通穴部から上記貫通溝部が延設された方向に平行な方向に挿脱可能とされて嵌合させられる被嵌合部が設けられていることを特徴とする交換式旋削加工用ヘッド。   An interchangeable turning head in which an insert mounting seat is formed at the tip of the head body that is detachably attached to the tip of the holder of the turning tool by a clamp screw, and a turning insert is further detachably attached to the insert mounting seat. The head body has a through hole having an inner diameter through which the head of the clamp screw can pass, and extends from the through hole toward the distal end side of the head body, so that the head cannot pass through. A mounting hole having a groove width through which the shaft portion of the clamp screw can pass is formed, and a fitting portion provided at the tip of the holder is located on the tip side of the mounting hole. On the other hand, a fitted portion is provided that can be inserted and removed in a direction parallel to a direction in which the through groove portion extends from the through hole portion of the mounting hole. Replaceable turning head according to claim. 上記ヘッド本体には、上記取付穴の上記貫通穴部が貫通する方向に突出して上記ホルダの上記嵌合部が設けられた端面に後端面が当接させられるフランジ部が形成されていて、このフランジ部の後端側を向く壁面に上記被嵌合部が設けられていることを特徴とする請求項１に記載の交換式旋削加工用ヘッド。   The head main body is formed with a flange portion that protrudes in a direction in which the through hole portion of the mounting hole penetrates, and a rear end surface is brought into contact with an end surface provided with the fitting portion of the holder. 2. The interchangeable turning head according to claim 1, wherein the fitted portion is provided on a wall surface facing the rear end side of the flange portion. 上記ヘッド本体の先端部には、上記取付穴の上記貫通穴部が貫通する方向に厚さ方向を有する板状の上顎部と下顎部とが形成されて、上記インサート取付座はこれら上顎部と下顎部との間に形成され、上記旋削用インサートは、上記上顎部と下顎部の厚さよりも上記厚さ方向に大きな長さの切刃を有する突っ切り用または溝入れ用の旋削用インサートであることを特徴とする請求項１に記載の交換式旋削加工用ヘッド。   A plate-like upper jaw portion and lower jaw portion having a thickness direction in a direction through which the through hole portion of the attachment hole passes are formed at the distal end portion of the head main body, and the insert attachment seat is connected to these upper jaw portions. The turning insert is formed between the lower jaw and the turning insert for parting or grooving having a cutting blade whose length is larger in the thickness direction than the thickness of the upper jaw and the lower jaw. The replaceable turning head according to claim 1. 請求項１から請求項３のいずれか一項に記載の交換式旋削加工用ヘッドがホルダ先端部に上記クランプネジによって着脱可能に取り付けられていることを特徴とするヘッド交換式旋削工具。   4. A head replaceable turning tool, wherein the replaceable turning head according to any one of claims 1 to 3 is detachably attached to a holder tip by the clamp screw.
JP2012121865A 2012-05-29 2012-05-29 Replaceable turning head and head replacement type turning tool Pending JP2013244583A (en)

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CN114310487A (en) * 2020-09-09 2022-04-12 硬质金属工具厂保罗霍恩有限公司 Tool holder and tool system with such a tool holder
JP7417562B2 (en) 2020-09-09 2024-01-18 ハルトメタル－ウェルクゾーグファブリック ポール ホーン ゲゼルシャフト ミット ベシュレンクテル ハフツング Tool holder and tool system equipped with the tool holder
JP7004107B1 (en) 2021-07-02 2022-01-21 株式会社タンガロイ Holders and cutting tools
JP2023007689A (en) * 2021-07-02 2023-01-19 株式会社タンガロイ Holder and cutting tool
JP2023015482A (en) * 2021-07-20 2023-02-01 株式会社タンガロイ Shank and cutting tool equipped therewith
JP7223298B2 (en) 2021-07-20 2023-02-16 株式会社タンガロイ Shank and cutting tool with same
WO2024048256A1 (en) * 2022-08-29 2024-03-07 京セラ株式会社 Cutting unit, cutting tool, and cutting tool rest, and method for manufacturing cut article

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