JP2008100330A - Cutting tool - Google Patents

Cutting tool Download PDF

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JP2008100330A
JP2008100330A JP2006286180A JP2006286180A JP2008100330A JP 2008100330 A JP2008100330 A JP 2008100330A JP 2006286180 A JP2006286180 A JP 2006286180A JP 2006286180 A JP2006286180 A JP 2006286180A JP 2008100330 A JP2008100330 A JP 2008100330A
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tool
tool body
insert
cutting
support plate
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JP4967597B2 (en
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Masaharu Takiguchi
正治 滝口
Kunihiro Endo
邦博 遠藤
Hiroyuki Matsuda
宏之 松田
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Mitsubishi Materials Corp
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Mitsubishi Materials Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a cutting tool which can suppress the wear and deformation of a tool body caused by a cutting force and the use for a long time period, and can keep the accuracy of the tool body high for a long time period, and can elongate the life of the tool body by reducing the cutting force to be applied to each of the inserts in cutting. <P>SOLUTION: In the cutting tool 1, the tool body 2 is turned about an axis O. First recessed portions are formed on outer periphery side of both side surfaces of the tool body 2. First attaching seats are provided in the first recessed portions. First inserts 40 are attached on the first attaching seats. First supporting plates 5 are detachably attached to the rear side of the first inserts 40 in the turning direction T of the tool in the first recessed portions so as to support the rear side of the first inserts 40 in the turning direction T. The first supporting plates 5 have an L shape in the side view of the tool body 2, wherein the L shape is formed such that a base portion and an elongated portion are integratedly formed, which elongated portion has the width narrower than that of one side of the square formed by the base portion, and elongates from the one side toward the outer periphery side of the tool body. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、円板状の工具本体の側面及び外周部に形成された凹部に設けられた取付座にインサートが着脱自在とされる切削工具に関するものである。   The present invention relates to a cutting tool in which an insert can be freely attached to and detached from a mounting seat provided in a concave portion formed on a side surface and an outer peripheral portion of a disk-shaped tool body.

従来、例えば、ディスクブレーキにおいてブレーキパッドを支持するキャリパーは、ブレーキパッドに対向する面が互いに平行に加工されていることが必要であるために、円板状の工具本体の両側面及び外周部に設けられた凹部にインサートを取付け、その両側面に設けられたインサートにより、キャリパーの内側に形成されるディスクのパッドに対向する内側両側面を切削すると同時に、外周部に設けられたインサートによりディスクの外周部と対向する底面を切削し、上記内側両側面相互の平行度と、上記内側両側面の上記底面に対する直角度を精度高く切削加工している。   Conventionally, for example, a caliper that supports a brake pad in a disc brake requires that the surfaces facing the brake pad be processed in parallel with each other. Inserts are installed in the provided recesses, and the inner side surfaces facing the pad of the disc formed inside the caliper are cut by the inserts provided on both side surfaces thereof, and at the same time, the inserts provided on the outer peripheral portion are used to insert the disc. The bottom surface facing the outer peripheral portion is cut, and the parallelism between the inner side surfaces and the perpendicularity of the inner side surfaces to the bottom surface are cut with high accuracy.

このような、切削工具（例えば、サイドカッタ）では、軸線回りに回転される円板状の工具本体の外周部及び両側面に複数の凹部が工具本体の外周部に周方向に間隔をあけて複数形成され、これら凹部の工具回転方向後方側に延びる取付座に対してインサートが、例えば、特許文献１に記載されるように直接的に取付けられ、又は例えばスポット溶接等の接合手段によって固定されたプレートを介して着脱可能に取り付けられている。
特開２００１−３８５１７号公報 In such a cutting tool (for example, a side cutter), a plurality of concave portions are provided on the outer peripheral portion of the disk-shaped tool body that is rotated around the axis and on both side surfaces, and are spaced apart in the circumferential direction on the outer peripheral portion of the tool body. An insert is directly attached to a mounting seat formed in plural and extending rearward in the tool rotation direction of these recesses, for example, as described in Patent Document 1, or fixed by joining means such as spot welding. It is detachably attached via a plate.
JP 2001-38517 A

ところで、このような切削工具においては、切削時に大きな切削力がインサートに作用した場合や、長期間の使用にともない取付座又は取付座に固定されたプレートが摩耗又は変形すると、インサート取付け時の静的精度や切削時のビビリ等の動的精度の確保が困難となって製品精度が低下する。そのため、インサートが工具本体の取付座に対して正確に配置、維持されることが重要であり、切削加工時のバランスと高い加工精度が要求される両側面においては特に重要である。   By the way, in such a cutting tool, when a large cutting force is applied to the insert during cutting, or when the mounting seat or the plate fixed to the mounting seat is worn or deformed with long-term use, the static force at the time of mounting the insert is reduced. As a result, it becomes difficult to ensure dynamic accuracy such as mechanical accuracy and chatter during cutting, and the product accuracy is reduced. For this reason, it is important that the insert is accurately arranged and maintained with respect to the mounting seat of the tool body, and particularly important on both side surfaces where a balance during cutting and high machining accuracy are required.

そこで、インサートが工具本体の取付座に対して正確に配置、維持するために、工具本体に配置されるインサートの数を増やすことによる各インサートの切削負荷の削減や、凹部に形成された取付座の修正や、凹部に接合手段によって固定されたプレートを凹部から取り外して新たなプレートを取付けることなどが挙げられる。しかしながら、インサートの数の増加は、取付スペースに関しての制約があり、また、取付座の修正やプレートの取替えには多くの工数が必要とされるうえコスト面で採算が合わないという問題があった。   Therefore, in order to accurately place and maintain the insert with respect to the mounting seat of the tool body, the cutting load of each insert can be reduced by increasing the number of inserts placed on the tool body, and the mounting seat formed in the recess. Correction, or removing the plate fixed to the concave portion by the joining means from the concave portion and attaching a new plate. However, the increase in the number of inserts has a limitation on the installation space, and there is a problem that a lot of man-hours are required for correcting the mounting seat and replacing the plate, and the cost is not profitable. .

本発明は、このような事情を鑑みてなされたもので、工具本体の両側面外周部に形成された凹部に設けられた取付座にインサートが装着される切削工具において、切削時に各インサートに作用する切削力を低下させることにより、切削力や長期間にわたる使用による工具本体の摩耗や変形を抑制し、工具本体を長期間にわたって精度高く維持し、工具本体の寿命が延長可能な切削工具を提供することを目的とする。   The present invention has been made in view of such circumstances, and in a cutting tool in which an insert is mounted on a mounting seat provided in a recess formed in the outer peripheral portion of both side surfaces of a tool body, the cutting tool acts on each insert during cutting. By reducing the cutting force to be used, the cutting force and the tool body wear and deformation due to long-term use can be suppressed, the tool body can be maintained with high accuracy over a long period of time, and the cutting tool that can extend the life of the tool body is provided The purpose is to do.

上記の目的を達するために、この発明は以下の手段を提供している。
請求項１に記載の発明は、軸線回りに回転される円板状の工具本体の両側面外周側に形成された第１の凹部に第1の取付座が設けられ、前記第1の取付座に切刃を有する第１のインサートが着脱自在に装着されるとともに、前記工具本体の外周部に形成された第２の凹部に第２の取付座が設けられ、前記第２の取付座に切刃を有する第２のインサートが着脱自在に装着される切削工具であって、前記第１の凹部の、前記第１のインサートの工具回転方向の後方側には、前記第１のインサートの前記回転方向後方側を支持する第１の支持プレートが着脱自在に取付けられ、前記第１の支持プレートは、前記第１の凹部に嵌合可能とされるとともに、前記工具本体の側面視に、略正方形状の基部とこの基部がなす正方形の一辺よりも幅狭で該一辺から真直に工具本体外周側に延びる延出部とが一体に形成されたＬ字形状とされ、かつ前記基部が前記工具本体に取付けられていることを特徴とする。 In order to achieve the above object, the present invention provides the following means.
According to the first aspect of the present invention, a first mounting seat is provided in a first recess formed on the outer peripheral side of both side surfaces of a disk-shaped tool body rotated about an axis, and the first mounting seat A first insert having a cutting edge is detachably mounted, and a second mounting seat is provided in a second recess formed in the outer peripheral portion of the tool body, and the second mounting seat has a cutting edge. A cutting tool in which a second insert having a blade is detachably mounted, and the rotation of the first insert is behind the first recess in the tool rotation direction of the first insert. A first support plate that supports the rear side in the direction is detachably attached. The first support plate can be fitted into the first recess and is substantially square in a side view of the tool body. If the width of the base is narrower than one side of the square Is a extended portion extending straight in the tool body outer peripheral side an L-shape formed integrally, and said base is characterized in that mounted on the tool body.

この発明に係る切削工具によれば、工具本体の両側面外周部に形成された第１の凹部の第１の取付座に第１のインサートを取付ける場合、第１のインサートの工具回転方向後方側に工具本体と着脱自在とされた第１の支持プレートを介して第１のインサートを取付けるので、切削時に大きな切削力が作用する場合や長期間にわたって使用される場合であっても、工具本体の第１の凹部に対する摩耗や変形が抑制される。また、第１の支持プレートが摩耗又は変形した場合、第１の支持プレートのみを交換することにより、工具本体が新しいときと同じ状態で第１のインサートを第１の取付座に取付けることが可能となる。
その結果、工具本体の精度を長期間にわたって維持し工具本体の寿命を延長することが可能となり、切削加工に関する加工コストを削減することができる。
また、第１の支持プレートの基部が工具本体に取付けられているので、第１の支持プレートの取付けに際して充分な取付け力を確保することができ、また、第１の支持プレートの外周側の周方向の幅が内周側より小さくされることにより、第１の取付座に充分なスペースを確保して装着可能な第１のインサートの数を増加させることができる。 According to the cutting tool according to the present invention, when the first insert is attached to the first mounting seat of the first recess formed on the outer peripheral portion of the both side surfaces of the tool body, the tool insert rotates rearward in the tool insertion direction. Since the first insert is attached to the tool body through a first support plate that is detachable from the tool body, even when a large cutting force is applied during cutting or when the tool body is used for a long time, Wear and deformation of the first recess are suppressed. In addition, when the first support plate is worn or deformed, the first insert can be attached to the first mounting seat in the same state as when the tool body is new by replacing only the first support plate. It becomes.
As a result, the accuracy of the tool body can be maintained over a long period of time, and the life of the tool body can be extended, thereby reducing the processing cost related to cutting.
In addition, since the base portion of the first support plate is attached to the tool main body, a sufficient attachment force can be ensured when attaching the first support plate, and the outer periphery side of the first support plate can be secured. By making the width in the direction smaller than the inner peripheral side, it is possible to increase the number of first inserts that can be mounted while securing a sufficient space in the first mounting seat.

請求項２に記載の発明は、請求項１記載の切削工具であって、前記第１の支持プレートは、前記基部が取付ボルトにより前記工具本体に取付けられていることを特徴とする。   A second aspect of the present invention is the cutting tool according to the first aspect, wherein the base portion of the first support plate is attached to the tool body by a mounting bolt.

この発明に係る切削工具によれば、第１の取付座に対する第１の支持プレートの取り付けが取付ボルトによりなされるので、着脱が容易であり短時間で確実な着脱を行なうことができる。   According to the cutting tool of the present invention, since the first support plate is attached to the first attachment seat by the attachment bolt, attachment / detachment is easy and reliable attachment / detachment can be performed in a short time.

請求項３に記載の発明は、請求項１又は請求項２に記載の切削工具であって、前記第２の凹部の前記第２のインサートの工具回転方向の後方側には、前記第２のインサートの回転方向後方側を支持する第２の支持プレートが取付ボルトにより着脱自在に取付けられていることを特徴とする。   Invention of Claim 3 is the cutting tool of Claim 1 or Claim 2, Comprising: On the back side of the tool rotation direction of the said 2nd insert of the said 2nd recessed part, said 2nd The second support plate for supporting the rear side in the rotational direction of the insert is detachably attached by a mounting bolt.

この発明に係る切削工具によれば、工具本体の外周部の凹部に形成された第２の取付座に第２のインサートを取付ける場合、工具本体と着脱自在とされた第２の支持プレートを介して第２のインサートを取付けるので、切削時に大きな切削力が作用する場合や長期間にわたって使用される場合であっても、工具本体の外周部に形成された凹部への摩耗や変形が抑制される。また、第２の支持プレートが摩耗又は変形した場合、第２の支持プレートのみを交換することにより、工具本体が新しいときと同じ状態で第２のインサートを第２の取付座に取付けることが可能となる。
その結果、切削加工に関する加工コストを削減することができる。 According to the cutting tool of the present invention, when the second insert is attached to the second mounting seat formed in the concave portion of the outer peripheral portion of the tool body, the second support plate that is detachable from the tool body is interposed. Since the second insert is attached, wear and deformation of the recess formed in the outer peripheral portion of the tool body are suppressed even when a large cutting force acts during cutting or when used for a long period of time. . In addition, when the second support plate is worn or deformed, the second insert can be attached to the second mounting seat in the same state as when the tool body is new by replacing only the second support plate. It becomes.
As a result, the processing cost related to cutting can be reduced.

本発明に係る切削工具によれば、工具本体の両側面外周部に形成された第１の凹部に第１のインサートを取付ける際に、工具本体に着脱可能に構成された第１の支持プレートを介して取付けるので、切削時に大きな切削力が作用する場合や長期間にわたって使用される場合に、工具本体の摩耗や変形を抑制することができ、その結果、工具本体の精度を長期間にわたって維持して工具本体の寿命を延長することができる。
その結果、切削加工に関する加工コストを削減することができる。 According to the cutting tool according to the present invention, the first support plate configured to be detachable from the tool body when the first insert is attached to the first recesses formed on the outer peripheral portions of both side surfaces of the tool body. Therefore, when a large cutting force is applied during cutting or when the tool is used for a long time, wear and deformation of the tool body can be suppressed, and as a result, the accuracy of the tool body can be maintained for a long time. The tool life can be extended.
As a result, the processing cost related to cutting can be reduced.

図１から図６は、本発明の一実施形態を示すものであり、図１において、符号１は切削工具を、符号２は工具本体を示している。
本実施形態において、切削工具１は、軸線Ｏを中心とした外形略円板状の工具本体２を備えたサイドカッタとされ、この軸線Ｏ回りに図中に符号Ｔで示す工具回転方向に回転されることにより切削工具１の両側面外周部及び外周部に対応する位置の切削加工に供されるものである。 1 to 6 show an embodiment of the present invention. In FIG. 1, reference numeral 1 denotes a cutting tool, and reference numeral 2 denotes a tool body.
In this embodiment, the cutting tool 1 is a side cutter provided with a substantially disc-shaped tool body 2 having an outer shape centered on the axis O, and rotates around the axis O in the tool rotation direction indicated by a symbol T in the drawing. By doing so, the cutting tool 1 is used for cutting at the positions corresponding to the outer peripheral portion and the outer peripheral portion on both side surfaces.

切削工具１は、図１、図２に示すように、工具本体２と、工具本体２の両側面外周部に取付けられる超硬合金等の硬質材料からなる複数の第１のインサート４０と、工具本体２の外周部に取付けられる超硬合金等の硬質材料からなる複数の第２のインサート５０とを備えており、工具本体２は、それぞれの第１のインサート４０の工具回転方向Ｔの後方側を支持する第１のインサート４０よりは軟質な例えば鋼材（ＳＫＤ６１）からなる第１の支持プレート５と、それぞれの第２のインサート５０の工具回転方向Ｔの後方側を支持する第２のインサート５０よりは軟質な例えば鋼材（ＳＫＤ６１）からなる第２の支持プレート７とを備えている。   As shown in FIGS. 1 and 2, the cutting tool 1 includes a tool body 2, a plurality of first inserts 40 made of a hard material such as cemented carbide attached to the outer peripheral portions of both side surfaces of the tool body 2, and a tool A plurality of second inserts 50 made of a hard material such as cemented carbide attached to the outer periphery of the main body 2, and the tool main body 2 is located on the rear side in the tool rotation direction T of each first insert 40. The first support plate 5 made of, for example, steel (SKD61), which is softer than the first insert 40 that supports the second insert 50, and the second insert 50 that supports the rear side in the tool rotation direction T of each second insert 50. The second support plate 7 made of, for example, a softer steel material (SKD61) is provided.

図３は、工具本体２の軸線Ｏを含む断面であり、工具本体２は、軸線Ｏを中心として、径方向内方から外方に向かって、中央に取付穴が形成されたボス部２７と、リブ部２９と、外周円環部２８とを備えており、ボス部２７の一方側の端面２７Ａは外周円環部２８の一方側の側面２８Ａよりも工具本体２の軸線Ｏ方向に凹んで形成されるとともに、ボス部２７の他方側の端面２７Ｂは外周円環部２８の他方側の側面２８Ｂよりも突出して形成されており、ボス部２７の中央には一方側の端面２７Ａから他方側の端面２７Ｂに貫通する取付穴が形成され、他方側の端面２７Ｂにはキー溝が形成されている。
また、リブ部２９には、工具本体２を軽量化するために複数の孔２９Ａが形成されている。 FIG. 3 is a cross section including the axis O of the tool body 2, and the tool body 2 has a boss portion 27 with a mounting hole formed in the center from the radially inner side to the outer side with the axis O as the center. The rib portion 29 and the outer ring portion 28 are provided, and the end surface 27A on one side of the boss portion 27 is recessed in the direction of the axis O of the tool body 2 from the side surface 28A on one side of the outer ring portion 28. The other end surface 27B of the boss portion 27 is formed so as to protrude from the other side surface 28B of the outer peripheral ring portion 28, and the center of the boss portion 27 extends from the one end surface 27A to the other side. A mounting hole penetrating the end face 27B is formed, and a keyway is formed on the other end face 27B.
In addition, a plurality of holes 29A are formed in the rib portion 29 in order to reduce the weight of the tool body 2.

また、工具本体２は、外周部２Ｃには、軸線Ｏ方向から見た場合に外周部２Ｃから内周側に凹むとともに工具本体２を軸線Ｏ方向に貫通し、かつ周方向に間隔をあけて形成された複数の切粉ポケット３を備えており、両側面２８Ａ、２８Ｂの外周側には各切粉ポケット３の工具回転方向Ｔの後方側に、該切粉ポケット３と工具本体２の外周部２Ｃと各側面２８Ａ、２８Ｂに開口する第１の凹部４、第２の凹部６が形成されており、第１の凹部４には第１の取付座８が設けられて第１のインサート４０が、第２の凹部６には第２の取付座９が設けられて第２のインサート５０が、それぞれ収納可能とされている。
第１のインサート４０と第２のインサート５０は、外周部２Ｃの各側面２８Ａ、２８Ｂ側において切削の軌跡が連続するように構成されている。 Further, the tool body 2 is recessed in the outer peripheral portion 2C from the outer peripheral portion 2C to the inner peripheral side when viewed from the direction of the axis O, penetrates the tool main body 2 in the axis O direction, and is spaced in the circumferential direction. A plurality of formed chip pockets 3 are provided, and the outer periphery of each of the chip pockets 3 and the tool body 2 is provided on the outer peripheral side of both side surfaces 28A and 28B on the rear side in the tool rotation direction T of each chip pocket 3. A first recess 4 and a second recess 6 are formed in the portion 2C and the side surfaces 28A and 28B. The first recess 40 is provided with a first mounting seat 8 in the first insert 40. However, the second recess 6 is provided with a second mounting seat 9 so that the second inserts 50 can be accommodated.
The first insert 40 and the second insert 50 are configured such that cutting trajectories are continuous on the side surfaces 28A and 28B of the outer peripheral portion 2C.

第１の取付座８に取り付けられる第１のインサート４０は、本実施形態では、図６（Ａ）、（Ｂ）、（Ｃ）に示すように、外形が正方形平板状をなしており、互いに平行な２つの正方形面４１とこれら２つの正方形面４１に直交するように配置された４つの側面４２を有している。２つの正方形面４１と各側面４２との交差部は断面円弧状とされており、側面４２には、正方形面４１に対向する方向から見てその４つの頂点から正方形面４１の辺稜部の中央部に向かうにつれて正方形面４１の中央部分に向かう傾斜面と、この傾斜面から辺稜部の中央に至るまでの間に外周側に切れ上がる緩やかな曲面が形成され、このうち傾斜面がすくい面４３とされるとともに、このすくい面４３と４つの側面４２及び２つの正方形面４１との交差稜線部には切刃４１Ａが形成されている。
また、第１のインサート４０の上記正方形面４１の中央部には、第１のインサート４０の２つの正方形面４１を貫通する取付孔４５が形成され、２つの正方形面４１における取付孔４５の開口部にそれぞれ漸次拡径するテーパ部が形成されている。 In the present embodiment, as shown in FIGS. 6A, 6B, and 6C, the first insert 40 attached to the first attachment seat 8 has a square plate shape, Two parallel square surfaces 41 and four side surfaces 42 arranged to be orthogonal to the two square surfaces 41 are provided. The intersections of the two square surfaces 41 and the side surfaces 42 have an arcuate cross section, and the side surfaces 42 are formed from the four vertices of the side ridges of the square surface 41 when viewed from the direction facing the square surface 41. An inclined surface that goes to the central portion of the square surface 41 as it goes to the central portion and a gently curved surface that cuts to the outer peripheral side from this inclined surface to the center of the side ridge portion are formed, of which the inclined surface is a rake face A cutting edge 41 </ b> A is formed at the intersecting ridge line portion of the rake face 43, the four side faces 42, and the two square faces 41.
Further, a mounting hole 45 penetrating the two square surfaces 41 of the first insert 40 is formed at the center of the square surface 41 of the first insert 40, and the opening of the mounting holes 45 in the two square surfaces 41 is formed. Each portion is formed with a tapered portion that gradually increases in diameter.

第１の凹部４の、第１のインサート４０の工具回転方向Ｔの後方側には、第１のインサート４０の工具回転方向Ｔの後方側を支持する第１の支持プレート５が取付ボルト５Ｋによって着脱自在に取付けられ、第１の支持プレート５の工具回転方向Ｔの前方側には第１のインサート４０が取付ボルト４６によって着脱自在に装着されている。
第２の凹部６の、第２のインサート５０の工具回転方向Ｔの後方側には、第２のインサート５０の工具回転方向Ｔの後方側を支持する第２の支持プレート７が取付ボルト７Ｈによって着脱自在に取付けられ、第２の支持プレート７の工具回転方向Ｔの前方側には第２のインサート５０が取付ボルト５６によって着脱自在に装着されている。 On the rear side of the first recess 40 in the tool rotation direction T of the first insert 40, a first support plate 5 that supports the rear side of the first insert 40 in the tool rotation direction T is attached by a mounting bolt 5K. A first insert 40 is detachably mounted on the front side of the first support plate 5 in the tool rotation direction T by a mounting bolt 46.
On the rear side of the second recess 6 in the tool rotation direction T of the second insert 50, a second support plate 7 that supports the rear side of the second insert 50 in the tool rotation direction T is attached by the mounting bolt 7H. The second insert 50 is detachably mounted on the front side of the second support plate 7 in the tool rotation direction T by a mounting bolt 56.

第１の凹部４は、凹部４Ａと、凹部４Ｂとにより画成されており、凹部４Ａは、工具本体２の外周円環部２８の各側面２８Ａ、２８Ｂから工具本体２の軸線Ｏ方向に向かって一段凹んで形成されるとともに切粉ポケット３と外周部２Ｃと各側面２８Ａ、２８Ｂとに開放され、凹部４Ｂは、凹部４Ａよりさらに軸線Ｏ方向及び工具本体２の内周側に一段凹んで形成され、凹部４Ａと外周部２Ｃと各側面２８Ａ、２８Ｂに開放されるとともに、軸線Ｏ方向からみて工具本体２の内周側の部分が工具回転方向Ｔの後方側に屈曲するＬ字形とされている。   The first recess 4 is defined by a recess 4A and a recess 4B. The recess 4A is directed from the side surfaces 28A, 28B of the outer peripheral ring portion 28 of the tool body 2 in the direction of the axis O of the tool body 2. And is opened to the chip pocket 3, the outer peripheral portion 2 </ b> C, and the side surfaces 28 </ b> A and 28 </ b> B, and the concave portion 4 </ b> B is further recessed in the direction of the axis O and the inner peripheral side of the tool body 2 from the concave portion 4 </ b> A. It is formed into an L-shape that is open to the concave portion 4A, the outer peripheral portion 2C, and the side surfaces 28A and 28B, and the inner peripheral portion of the tool body 2 is bent to the rear side in the tool rotation direction T when viewed from the axis O direction. ing.

凹部４Ａは、切粉ポケット３及び外周部２Ｃに連なる平坦な底面４Ｃと、この底面４Ｃに垂直に形成され各側面２８Ａ、２８Ｂに連なる壁面４Ｄとを備えており、凹部４Ｂは、底面４Ｃより軸線Ｏ方向に一段凹んで形成され外周部２Ｃに連なる平坦な底面４Ｅと、工具回転方向Ｔを向いて底面４Ｅに垂直に各側面２８Ａ、２８Ｂおよび外周部２Ｃに連なる平坦な壁面４Ｆと、凹部４Ｂを構成するＬ字形の底辺をなす平坦な壁面４Ｇとを備えている。   The concave portion 4A includes a flat bottom surface 4C continuous to the chip pocket 3 and the outer peripheral portion 2C, and a wall surface 4D formed perpendicular to the bottom surface 4C and continuous to the side surfaces 28A and 28B. The concave portion 4B is formed from the bottom surface 4C. A flat bottom surface 4E formed to be recessed in one step in the axis O direction and continuous to the outer peripheral portion 2C; a flat wall surface 4F continuous to the side surfaces 28A and 28B and the outer peripheral portion 2C facing the tool rotation direction T and perpendicular to the bottom surface 4E; And a flat wall surface 4G forming the bottom of the L-shape constituting 4B.

また、凹部４Ａの工具回転方向Ｔの後方側に形成された凹部４Ｂには、第１の支持プレート５が配置され、第１の支持プレート５は、底面４Ｅ、壁面４Ｆ及び壁面４Ｇに当接され、取付ボルト５Ｋが底面４Ｅに形成されたネジ孔にねじ込まれることによって着脱自在に取付けられるようになっている。   The first support plate 5 is disposed in the recess 4B formed on the rear side of the recess 4A in the tool rotation direction T, and the first support plate 5 contacts the bottom surface 4E, the wall surface 4F, and the wall surface 4G. The mounting bolt 5K is detachably mounted by being screwed into a screw hole formed in the bottom surface 4E.

第１の支持プレート５は、凹部４Ｂに嵌合可能なＬ字形状のブロック形をなし、すなわち、工具本体２の側面視に、長方形の１つの角部を該長方形の長辺に沿って切欠いた形状をなしていて、同側面視に略正方形状の基部５Ａと、この基部５Ａがなす正方形の一辺よりも幅狭で該一辺から真直に延びる延出部５Ｂとが一体に形成されており、前記基部５Ａに取付ボルト５Ｋが挿通されている。   The first support plate 5 has an L-shaped block shape that can be fitted into the recess 4B. That is, when the tool body 2 is viewed from the side, one rectangular corner is cut out along the long side of the rectangle. The base 5A having a substantially square shape in the same side view and the extending portion 5B which is narrower than one side of the square formed by the base 5A and extends straight from the one side are integrally formed. The mounting bolt 5K is inserted through the base portion 5A.

そしてこの第１の支持プレート５は、基部５Ａから延出部５Ｂにわたって前記底面４Ｅに密着可能な平坦な下面５Ｄと、前記延出部５Ｂに前記壁面４Ｆと密着可能な側面５Ｅと、前記基部５Ａに前記壁面４Ｇを密着可能な側面５Ｆとを備えており、基部５Ａを工具本体２の内周側に向けるとともに延出部５Ｂを外周側に延ばすようにして、これらの面４Ｅ、４Ｆ、４Ｇと面５Ｄ、５Ｅ、５Ｆとを互いに密着させて第１の支持プレート５を凹部４Ｂに装着した状態で、上記下面５Ｄと反対側の上面５Ｇは工具本体２の工具回転方向Ｔに向かうに従い、外周円環部２８の側面２８Ａ、２８Ｂからわずかに突出するように傾斜させられ、側面５Ｅと反対側の工具回転方向Ｔを向く側面５Ｈは凹部４Ａの工具回転方向Ｔの後方側に位置して工具回転方向Ｔを向くように、また側面５Ｆと反対側の側面５Ｊは工具本体２の上記外周部２Ｃに面一となるようにされている。側面５Ｈは、第１の取付座８の一部をなし、この第１の取付座８に第１のインサート４０が取り付けられるようになっている。   The first support plate 5 includes a flat lower surface 5D that can be in close contact with the bottom surface 4E from the base portion 5A to the extension portion 5B, a side surface 5E that can be in close contact with the wall surface 4F on the extension portion 5B, and the base portion. 5A is provided with a side surface 5F capable of closely contacting the wall surface 4G, the base portion 5A is directed to the inner peripheral side of the tool body 2 and the extending portion 5B is extended to the outer peripheral side, so that these surfaces 4E, 4F, 4G and the surfaces 5D, 5E, and 5F are in close contact with each other, and the upper surface 5G opposite to the lower surface 5D is directed toward the tool rotation direction T of the tool body 2 with the first support plate 5 mounted in the recess 4B. The side surface 5H that is inclined so as to slightly protrude from the side surfaces 28A and 28B of the outer ring portion 28 and faces the tool rotation direction T opposite to the side surface 5E is located on the rear side of the recess 4A in the tool rotation direction T. Tool rotation method To face T, also side 5J aspect 5F opposite is adapted to be flush with the outer peripheral portion 2C of the tool body 2. The side surface 5H forms a part of the first mounting seat 8, and the first insert 40 is mounted on the first mounting seat 8.

この第１の取付座８は、凹部４Ａの底面４Ｃ、壁面４Ｄと、上記第１の支持プレート５の側面５Ｈとによって画成されており、図１、図２、図４に示すように、底面４Ｃは、軸線Ｏ方向からみたときに、第１の取付座８に配置された外形略正方形の第１のインサート４０の工具本体２の外周部２Ｃ側に位置する辺が、工具回転方向Ｔに向かうに従い、工具本体２の径方向外方にわずかに傾斜するように形成されるとともに、内周側に向けても逃げ、各側面２８Ａ、２８Ｂ側における第１のインサート４０の正方形面４１が外周円環部２８の各側面２８Ａ、２８Ｂからわずかに突出するように傾斜させられている。
このような構成にすることにより、第１のインサート４０の外周部２Ｃ側と、各側面２８Ａ、２８Ｂには、逃げ角が与えられるようになっている。 The first mounting seat 8 is defined by the bottom surface 4C and the wall surface 4D of the recess 4A and the side surface 5H of the first support plate 5. As shown in FIGS. 1, 2, and 4, When the bottom surface 4C is viewed from the direction of the axis O, the side located on the outer peripheral portion 2C side of the tool body 2 of the first insert 40 having a substantially square outer shape disposed on the first mounting seat 8 has a tool rotation direction T. Is formed so as to be slightly inclined outwardly in the radial direction of the tool body 2 and escapes even toward the inner peripheral side, and the square surface 41 of the first insert 40 on each side surface 28A, 28B side is formed. The outer circumferential ring portion 28 is inclined so as to slightly protrude from the side surfaces 28A and 28B.
With such a configuration, clearance angles are given to the outer peripheral portion 2C side of the first insert 40 and the side surfaces 28A and 28B.

第２の取付座９に取り付けられる第２のインサート５０は、長手方向に直交する断面が偏平した等脚台形状をなす略長方形平板状をなし、すなわち長方形をなす上面５１と、この長方形と長さが同じで幅が短く形成された下面５２と、上面５１の長辺と下面２の長辺を接続して形成される２つの側面５３と、図５（Ｂ）に示すように前記等脚台形状をなす２つの側面５４とを備え、上面５１と側面５３の交差稜線部に切刃５５が形成された構成とされている。   The second insert 50 attached to the second attachment seat 9 has a substantially rectangular flat plate shape having an isosceles trapezoidal shape with a flat cross section perpendicular to the longitudinal direction, that is, a rectangular upper surface 51, and the rectangular shape and the long shape. A lower surface 52 having the same width and a shorter width, two side surfaces 53 formed by connecting the long side of the upper surface 51 and the long side of the lower surface 2, and the isosceles as shown in FIG. Two side surfaces 54 having a trapezoidal shape are provided, and a cutting edge 55 is formed at the intersecting ridge line portion of the upper surface 51 and the side surface 53.

第２の凹部６は、図５に示すように、凹部６Ａと、凹部６Ｂとにより画成されており、凹部６Ａは、工具本体２の外周部２Ｃから内周側に一段凹んで形成されるとともに切粉ポケット３と外周部２Ｃと各側面２８Ａ、２８Ｂに開放され、凹部６Ｂは、工具本体２の軸線Ｏ方向において凹部６Ａより浅く形成されるとともに工具本体２の内周側にさらに一段凹んで形成され、凹部６Ａと外周部２Ｃと各側面２８Ａ、２８Ｂに開放されている。   As shown in FIG. 5, the second recess 6 is defined by a recess 6 </ b> A and a recess 6 </ b> B, and the recess 6 </ b> A is formed to be recessed from the outer periphery 2 </ b> C of the tool body 2 to the inner periphery. The chip pocket 3, the outer peripheral portion 2 </ b> C, and the side surfaces 28 </ b> A and 28 </ b> B are opened, and the concave portion 6 </ b> B is formed shallower than the concave portion 6 </ b> A in the axis O direction of the tool body 2. And is open to the recess 6A, the outer peripheral portion 2C, and the side surfaces 28A and 28B.

凹部６Ａは、切粉ポケット３及び外周円環部２８の各側面２８Ａ、２８Ｂに連なる平坦な底面６Ｃと、この底面６Ｃに垂直に形成され外周部２Ｃに連なる壁面６Ｄとを備えており、凹部６Ｂは、底面６Ｃより内周方向に一段凹んで形成され外周円環部２８の各側面２８Ａ、２８Ｂに連なる平坦な底面６Ｅと、工具回転方向Ｔを向いて底面６Ｅに垂直に形成され各側面２８Ａ、２８Ｂおよび外周部２Ｃに連なる平坦な壁面６Ｆと、底面６Ｅと壁面６Ｆとに垂直に形成され外周部２Ｃに連なる平坦な壁面６Ｇとを備えている。   The concave portion 6A includes a flat bottom surface 6C that is continuous with the side surfaces 28A and 28B of the chip pocket 3 and the outer peripheral annular portion 28, and a wall surface 6D that is formed perpendicular to the bottom surface 6C and is continuous with the outer peripheral portion 2C. 6B includes a flat bottom surface 6E which is formed to be recessed by one step in the inner circumferential direction from the bottom surface 6C and is continuous with the side surfaces 28A and 28B of the outer circumferential ring portion 28, and is formed perpendicular to the bottom surface 6E so as to face the tool rotation direction T. 28A, 28B and a flat wall surface 6G connected to the outer peripheral portion 2C, and a flat wall surface 6G formed perpendicular to the bottom surface 6E and the wall surface 6F and connected to the outer peripheral portion 2C.

このうち、底面６Ｃは軸線Ｏ方向に延びる長方形に形成されていて、凹部６Ａの工具回転方向Ｔの後方側に形成された凹部６Ｂには、第２の支持プレート７が配置され、第２の支持プレート７は、底面６Ｅ、壁面６Ｆ及び壁面６Ｇに当接され、取付ボルト７Ｇが底面６Ｅに形成されたネジ孔にねじ込まれることによって着脱自在に取付けられるようになっている。   Among these, the bottom surface 6C is formed in a rectangular shape extending in the direction of the axis O, and the second support plate 7 is disposed in the recess 6B formed on the rear side in the tool rotation direction T of the recess 6A. The support plate 7 is in contact with the bottom surface 6E, the wall surface 6F, and the wall surface 6G, and is detachably mounted by screwing a mounting bolt 7G into a screw hole formed in the bottom surface 6E.

第２の支持プレート７は、凹部６Ｂに嵌合可能な略直方体状のブロック型をなし、すなわち上記底面６Ｅに密着可能な平坦な下面７Ａと上記壁面６Ｆ、６Ｇに密着可能な側面７Ｂ、７Ｃとを備えており、これらの面６Ｅ、６Ｆ、６Ｇと面７Ａ、７Ｂ、７Ｃとを互いに密着させて第２の支持プレート７を凹部６Ｂに装着した状態で、上記下面７Ａと反対側の上面７Ｄは工具本体２の外周部２Ｃにおける接線に平行に形成され、側面６Ｆと反対側の工具回転方向Ｔの後方側に連なるように、また側面６Ｇと反対側の側面７Ｆは工具本体２の外周円環部２８の側面２８Ａ、２８Ｂに面一となるようにされている。そして、側面７Ｂは第２の取付座９の一部をなし、この第２の取付座９に第２のインサート５０が取り付けられるようになっている。   The second support plate 7 has a substantially rectangular parallelepiped block shape that can be fitted into the recess 6B, that is, a flat lower surface 7A that can be in close contact with the bottom surface 6E and side surfaces 7B and 7C that can be in close contact with the wall surfaces 6F and 6G. In the state where these surfaces 6E, 6F, 6G and the surfaces 7A, 7B, 7C are in close contact with each other and the second support plate 7 is mounted in the recess 6B, the upper surface on the side opposite to the lower surface 7A. 7D is formed in parallel to the tangent line at the outer peripheral portion 2C of the tool body 2, and is connected to the rear side in the tool rotation direction T on the opposite side to the side surface 6F. The side surfaces 28A and 28B of the annular portion 28 are flush with each other. The side surface 7 </ b> B forms a part of the second mounting seat 9, and the second insert 50 is attached to the second mounting seat 9.

この第２の取付座９は、凹部６Ａの底面６Ｃと、第２の支持プレート７の側面７Ｅと、壁面６Ｄとによって画成されており、図５（Ａ）、（Ｂ）に示すように、軸線Ｏ方向からみたときに底面６Ｃは工具回転方向Ｔの後方側が内周側に向けて逃げて第２のインサート５０の上面５１が工具回転方向Ｔの前方側でわずかに突出するように傾斜させられ、側面７Ｅは第２のインサートの側面５３と相補的に形成されており、壁面６Ｄは、各側面２８Ａ、２８Ｂと平行に形成されるとともに各側面２８Ａ、２８Ｂからの距離が第２のインサート５０の切刃５５の幅よりもわずかに小さく形成され、第２のインサート５０を装着したときに側面５４が各側面２８Ａ、２８Ｂからわずかに突出するように構成されている。   The second mounting seat 9 is defined by a bottom surface 6C of the recess 6A, a side surface 7E of the second support plate 7, and a wall surface 6D, as shown in FIGS. 5 (A) and 5 (B). When viewed from the direction of the axis O, the bottom surface 6C is inclined so that the rear side in the tool rotation direction T escapes toward the inner peripheral side and the upper surface 51 of the second insert 50 slightly protrudes on the front side in the tool rotation direction T. The side surface 7E is formed to be complementary to the side surface 53 of the second insert, and the wall surface 6D is formed in parallel with the side surfaces 28A and 28B and the distance from the side surfaces 28A and 28B is the second. It is formed to be slightly smaller than the width of the cutting edge 55 of the insert 50, and is configured such that the side surface 54 slightly protrudes from each of the side surfaces 28A and 28B when the second insert 50 is mounted.

工具本体２は、上記のように構成された第１の取付座８及び第２の取付座９の配列に関して、図２に示すように、１つの切粉ポケット３に対して工具本体２の一方の側面２Ａ側と他方の側面２Ｂ側がともに第１の取付座８とされる第１の組合せと、一方の側面２Ａ側が第２の取付座９とされ他方の側面２Ｂ側が第１の取付座８とされる第２の組合せと、一方の側面２Ａ側が第１の取付座８とされ他方の側面２Ｂ側が第２の取付座９とされる第３の組合せとを備えており、この実施の形態において、第１の組合せ、第２の組合せ、第３の組合せは、この順に工具本体２の周方向に配置されている。   With respect to the arrangement of the first mounting seat 8 and the second mounting seat 9 configured as described above, the tool body 2 has one of the tool bodies 2 with respect to one chip pocket 3 as shown in FIG. The side surface 2A side and the other side surface 2B side are both the first mounting seat 8, the one side surface 2A side is the second mounting seat 9, and the other side surface 2B side is the first mounting seat 8. And a third combination in which one side surface 2A side is a first mounting seat 8 and the other side surface 2B side is a second mounting seat 9. The first combination, the second combination, and the third combination are arranged in the circumferential direction of the tool body 2 in this order.

ここで、第１のインサート４０は、一方の側面２Ａ側の第１の取付座８と、他方の側面２Ｂ側の第１の取付座８に取付けられた状態でそれぞれその切刃４１Ａのうちいずれか一方の正方形面４１側の部分が切削に使用される。したがって、第１のインサート４０を中心回りに９０°ずつ回転させて外周部２Ｃに位置する４つの切刃４１Ａの位置を替えることにより、第１のインサート４０を４回にわたって使用することができ、さらに工具本体２の反対側の側面の第１の取付座８に取り付け直すことで合計８回使用することができる。   Here, the first insert 40 is attached to the first mounting seat 8 on the one side surface 2A side and the first mounting seat 8 on the other side surface 2B side. One of the square surface 41 side portions is used for cutting. Therefore, the first insert 40 can be used four times by rotating the first insert 40 by 90 ° around the center and changing the positions of the four cutting edges 41A located on the outer peripheral portion 2C. Furthermore, it can be used a total of eight times by re-attaching to the first mounting seat 8 on the opposite side surface of the tool body 2.

上記実施の形態に係る切削工具１によれば、工具本体２の両側面外周部に形成された第１の凹部４の第１の取付座８に第１のインサート４０を取付ける場合、第１のインサート４０の工具回転方向Ｔの後方側に工具本体２と着脱自在とされた第１の支持プレート５を介して第１のインサート４０を取付けるので、切削時に大きな切削力が作用する場合や長期間にわたって使用される場合であっても、工具本体２の第１の凹部４に対する摩耗や変形が抑制される。また、第１の支持プレート５が摩耗又は変形した場合、第１の支持プレート５のみを交換することにより、工具本体２が新しいときと同じ状態で第１のインサート４０を第１の取付座８に取付けることが可能となる。
その結果、工具本体２の精度を長期間にわたって維持して工具本体の寿命を延長することが可能となる。
その結果、切削加工に関する加工コストを削減することができる。 According to the cutting tool 1 according to the above-described embodiment, when the first insert 40 is attached to the first mounting seat 8 of the first recess 4 formed on the outer peripheral portion of both side surfaces of the tool body 2, Since the first insert 40 is attached to the back side of the tool rotation direction T of the insert 40 via the first support plate 5 that is detachable from the tool body 2, a large cutting force is applied during cutting or for a long time. Even when it is used over the range, the wear and deformation of the first recess 4 of the tool body 2 are suppressed. Further, when the first support plate 5 is worn or deformed, only the first support plate 5 is replaced, so that the first insert 40 is attached to the first mounting seat 8 in the same state as when the tool body 2 is new. It becomes possible to attach to.
As a result, it is possible to extend the life of the tool body while maintaining the accuracy of the tool body 2 over a long period of time.
As a result, the processing cost related to cutting can be reduced.

また、第１の支持プレート５が、工具回転方向Ｔの後方側に側面５Ｈを有しているので、第１のインサート４０の工具回転方向前方からの切削力が壁面４Ｆに直接加わることがなく、その結果、切削加工をする際の第１のインサート４０による工具本体２への摩耗や変形が抑制される。   Further, since the first support plate 5 has the side surface 5H on the rear side in the tool rotation direction T, the cutting force from the front in the tool rotation direction of the first insert 40 is not directly applied to the wall surface 4F. As a result, the wear and deformation of the tool body 2 by the first insert 40 when cutting is suppressed.

また、第１の支持プレート５、第２の支持プレート７が、例えば硬度ＨＲＣ５０のＳＫＤ６１により形成されるとともに、工具本体２が例えば硬度ＨＲＣ３２のＳＣＭ４４０により形成されて、第１の支持プレート５、第２の支持プレート７の硬度が、工具本体２の硬度より高く構成されているので、第１のインサート４０、第２のインサート５０を工具本体２に直接装着する場合に比較すると大きな切削力が作用した場合であっても、工具本体２の摩耗や変形を抑制することができる。   In addition, the first support plate 5 and the second support plate 7 are formed of, for example, an SKD 61 having a hardness of HRC50, and the tool body 2 is formed of, for example, an SCM 440 of a hardness of HRC32. 2 has a higher hardness than that of the tool body 2, so that a larger cutting force acts than when the first insert 40 and the second insert 50 are directly mounted on the tool body 2. Even in this case, wear and deformation of the tool body 2 can be suppressed.

また、第１の支持プレート５が、第１の取付座８に取付ボルト５Ｋにより取付けられているので着脱が容易であり、第１の支持プレート５を短時間で確実に着脱することができる。
また、第１の支持プレート５は、延出部５Ｂに取付ボルト等が用いられることなく、基部５Ａのみに挿通される取付ボルト５Ｋによって取付けられるので、第１の支持プレート５の外周側に延びる延出部５Ｂの周方向の幅を内周側より小さくすることができ、その結果、第１のインサート４０が多くても第１の取付座８に装着するスペースを充分に確保しつつ、個々の第１の支持プレート５には充分な取付け強度を付えることができ、したがって、第１のインサート４０の取付け強度も充分に確保することができる。 Moreover, since the 1st support plate 5 is attached to the 1st attachment seat 8 with the attachment volt | bolt 5K, attachment / detachment is easy and can attach / detach the 1st support plate 5 reliably in a short time.
Further, the first support plate 5 is attached to the extension portion 5B by the attachment bolt 5K inserted through only the base portion 5A without using an attachment bolt or the like, and thus extends to the outer peripheral side of the first support plate 5. The circumferential width of the extending portion 5B can be made smaller than that of the inner peripheral side. As a result, even when there are many first inserts 40, the space for mounting on the first mounting seat 8 can be sufficiently secured. The first support plate 5 can be provided with a sufficient mounting strength, and therefore the mounting strength of the first insert 40 can be sufficiently secured.

なお、上記実施の形態においては、第１の支持プレート５及び第２の支持プレート７がＳＫＤ６１で製作され、工具本体２がＳＣＭ４４０で製作されて、第１の支持プレート５及び第２の支持プレート７の硬度が工具本体２の硬度よりも高い場合について説明したが、第１の支持プレート５、第２の支持プレート７、工具本体２を、上記材質とは異なる材質で製作することも可能であるし、その場合に、第１の支持プレート５、第２の支持プレート７と工具本体２に係る相対的な硬度を上記の同じ順序とし又は上記実施形態とは逆の順序に構成することも可能である。   In the above embodiment, the first support plate 5 and the second support plate 7 are made of the SKD 61, the tool body 2 is made of the SCM 440, and the first support plate 5 and the second support plate. Although the case where the hardness of 7 is higher than the hardness of the tool body 2 has been described, the first support plate 5, the second support plate 7, and the tool body 2 can be made of a material different from the above materials. In that case, the relative hardness of the first support plate 5, the second support plate 7 and the tool body 2 may be configured in the same order as described above or in the order opposite to that in the embodiment. Is possible.

また、上記実施の形態においては、工具本体２における第１の取付座８及び第２の取付座９の配置については、上述した第１の組合せ、第２の組合せ、第３の組合せを有するとともに、第１の組合せ、第２の組合せ、第３の組合せの順に工具本体２の周方向に配置される場合について説明したが、第１の取付座８、第２の取付座９の組合せ及び配置については、任意に選択可能であることはいうまでもない。   In the above embodiment, the arrangement of the first mounting seat 8 and the second mounting seat 9 in the tool body 2 has the above-described first combination, second combination, and third combination. Although the case where it arrange | positions in the circumferential direction of the tool main body 2 in order of 1st combination, 2nd combination, and 3rd combination was demonstrated, combination and arrangement | positioning of the 1st mounting seat 8 and the 2nd mounting seat 9 Needless to say, can be arbitrarily selected.

また、上記実施の形態においては、正方形平板状の第１のインサート４０を工具本体２に取付ける場合について説明したが、例えば、楕円形、三角形、五角以上の辺を有する多角形等のインサートを用いてもよく、その場合、第１の支持プレート５の形状を第１のインサート４０の形状に対応させて変更することができることはいうまでもない。
また、第２のインサート５０の形状その他の仕様に関しても同様である。 Moreover, in the said embodiment, although the case where the square flat plate-shaped 1st insert 40 was attached to the tool main body 2 was demonstrated, inserts, such as an ellipse, a triangle, and a polygon which has a side more than a pentagon, are used, for example. In this case, it goes without saying that the shape of the first support plate 5 can be changed in accordance with the shape of the first insert 40.
The same applies to the shape of the second insert 50 and other specifications.

本発明の一実施形態を示す正面図である。It is a front view showing one embodiment of the present invention. 図１における切削工具の矢線Ｘ方向視の詳細図である。It is a detailed view of the cutting tool in FIG. 図１における切削工具の軸線を含む縦断面図である。It is a longitudinal cross-sectional view containing the axis line of the cutting tool in FIG. 本発明に係る切削工具の第１の凹部、第１のインサート、及び第１の支持プレートの詳細を示す図であり、（Ａ）は、外周部側から、（Ｂ）は、側面側からみた図である。It is a figure which shows the detail of the 1st recessed part of the cutting tool which concerns on this invention, a 1st insert, and a 1st support plate, (A) was seen from the outer peripheral part side, (B) was seen from the side surface side. FIG. 本発明に係る切削工具の第２の凹部、第２のインサート、及び第２の支持プレートの詳細を示す図であり、（Ａ）は、外周部側から、（Ｂ）は、側面側からみた図である。It is a figure which shows the detail of the 2nd recessed part of the cutting tool which concerns on this invention, a 2nd insert, and a 2nd support plate, (A) was seen from the outer peripheral part side, (B) was seen from the side surface side. FIG. 本発明に係る切削工具の第１の凹部に取付けられる第１のインサートの一例を示す図であり、（Ａ）は側面図を、（Ｂ）は平面図を、（Ｃ）は（Ｂ）に示した平面図の矢線Ｙにおける縦断面図である。It is a figure which shows an example of the 1st insert attached to the 1st recessed part of the cutting tool which concerns on this invention, (A) is a side view, (B) is a top view, (C) is (B). It is a longitudinal cross-sectional view in the arrow line Y of the shown top view.

符号の説明Explanation of symbols

１ 切削工具
２ 工具本体
４ 第１の凹部
５ 第１の支持プレート
６ 第２の凹部
７ 第２の支持プレート
８ 第１の取付座
９ 第２の取付座
４０ 第１のインサート
５０ 第２のインサート
Ｏ 工具本体２の軸線
Ｔ 工具回転方向
２Ａ 一方側の側面
２Ｂ 他方側の側面
２Ｃ 外周部
５Ａ 基部
５Ｂ 延出部
５Ｋ 取付ボルト DESCRIPTION OF SYMBOLS 1 Cutting tool 2 Tool main body 4 1st recessed part 5 1st support plate 6 2nd recessed part 7 2nd support plate 8 1st mounting seat 9 2nd mounting seat 40 1st insert 50 2nd insert O Axis of tool body 2 T Tool rotation direction 2A One side surface 2B The other side surface 2C Outer peripheral portion 5A Base portion 5B Extension portion 5K Mounting bolt

Claims (3)

軸線回りに回転される円板状の工具本体の両側面外周側に形成された第１の凹部に第1の取付座が設けられ、前記第1の取付座に切刃を有する第１のインサートが着脱自在に装着されるとともに、
前記工具本体の外周部に形成された第２の凹部に第２の取付座が設けられ、前記第２の取付座に切刃を有する第２のインサートが着脱自在に装着される切削工具であって、
前記第１の凹部の、前記第１のインサートの工具回転方向の後方側には、前記第１のインサートの前記回転方向後方側を支持する第１の支持プレートが着脱自在に取付けられ、
前記第１の支持プレートは、前記第１の凹部に嵌合可能とされるとともに、前記工具本体の側面視に、略正方形状の基部とこの基部がなす正方形の一辺よりも幅狭で該一辺から真直に工具本体外周側に延びる延出部とが一体に形成されたＬ字形状とされ、かつ前記基部が前記工具本体に取付けられていることを特徴とする切削工具。 A first insert having a first mounting seat in a first recess formed on the outer peripheral side of both side surfaces of a disk-shaped tool body rotated about an axis, and having a cutting edge in the first mounting seat Is detachably mounted,
A cutting tool in which a second mounting seat is provided in a second recess formed in an outer peripheral portion of the tool body, and a second insert having a cutting edge is detachably mounted on the second mounting seat. And
A first support plate that supports the rear side in the rotational direction of the first insert is detachably attached to the rear side of the first recess in the tool rotational direction of the first insert,
The first support plate can be fitted into the first recess, and is narrower than the side of the square formed by the substantially square base and the base in the side view of the tool body. A cutting tool characterized by having an L-shape integrally formed with an extending portion extending straight to the outer peripheral side of the tool body, and the base portion being attached to the tool body. 請求項１記載の切削工具であって、
前記第１の支持プレートは、前記基部が取付ボルトにより前記工具本体に取付けられていることを特徴とする切削工具。 The cutting tool according to claim 1,
The cutting tool, wherein the first support plate has the base attached to the tool body by a mounting bolt. 請求項１又は請求項２に記載の切削工具であって、
前記第２の凹部の前記第２のインサートの工具回転方向の後方側には、前記第２のインサートの回転方向後方側を支持する第２の支持プレートが取付ボルトにより着脱自在に取付けられていることを特徴とする切削工具。 The cutting tool according to claim 1 or 2,
On the rear side of the second insert in the tool rotation direction of the second recess, a second support plate that supports the rear side in the rotation direction of the second insert is detachably attached by a mounting bolt. A cutting tool characterized by that.
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014061583A (en) * 2012-09-24 2014-04-10 Hitachi Automotive Systems Ltd Method for processing disc brake caliper

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CN103317178B (en) * 2013-07-09 2016-08-24 宁波川景誉机械科技发展有限公司 A kind of Whirlwind milling cutter

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Publication number Priority date Publication date Assignee Title
JPS49119871U (en) * 1973-02-10 1974-10-14
JP2001315018A (en) * 2000-05-10 2001-11-13 Toshiba Mach Co Ltd Side cutter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS49119871U (en) * 1973-02-10 1974-10-14
JP2001315018A (en) * 2000-05-10 2001-11-13 Toshiba Mach Co Ltd Side cutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014061583A (en) * 2012-09-24 2014-04-10 Hitachi Automotive Systems Ltd Method for processing disc brake caliper

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