JP2009226548A - Cutting tool and cutting method using same - Google Patents

Cutting tool and cutting method using same Download PDF

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JP2009226548A
JP2009226548A JP2008075502A JP2008075502A JP2009226548A JP 2009226548 A JP2009226548 A JP 2009226548A JP 2008075502 A JP2008075502 A JP 2008075502A JP 2008075502 A JP2008075502 A JP 2008075502A JP 2009226548 A JP2009226548 A JP 2009226548A
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cutting
tool
vibration absorbing
absorbing member
tool holder
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Kenichiro Koga
健一郎 古賀
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Kyocera Corp
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Kyocera Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To solve a problem that the vibration of a cutting tool can be suppressed to some extent by providing a recessed part at the distal end of a tool holder and disposing a member with a low elastic modulus there, however, as the part provided with the member with the low elastic modulus becomes larger, the durability of a tool holder is lowered. <P>SOLUTION: This cutting tool is provided with: cutting inserts that has upper faces and lower faces; a tool holder that has seat faces where the lower faces of the cutting inserts come into contact, at the distal end part, and has recessed parts positioned in the lower parts of the seat faces and opened in the distal end direction; and vibration absorbing members disposed in the recessed parts, wherein at least a part of the upper face of the vibration absorbing member is formed from the distal end side and the lower side of the tool holder towards the rear end side and the upper side of the tool holder and is inclined towards the seat face. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、金属部品等の切削加工に用いる切削工具に関するものである。   The present invention relates to a cutting tool used for cutting metal parts and the like.

従来から、金属部品等の切削加工に用いる切削工具として、先端部に座面を有する工具ホルダと、この座面にねじ止めされた切削インサートと、を具備した形状のものが知られている。   2. Description of the Related Art Conventionally, as a cutting tool used for cutting a metal part or the like, a tool having a shape including a tool holder having a seating surface at a tip portion and a cutting insert screwed to the seating surface is known.

このような切削工具自体又は被削材を回転させると同時に切削インサートの切刃を被削材に接触させることにより、被削材を切削加工することができる。また、一般的に、切削加工を繰り返すことで切削インサートが摩耗するため、切削インサートは着脱可能に取り付けられている。   By rotating the cutting tool itself or the work material and simultaneously bringing the cutting blade of the cutting insert into contact with the work material, the work material can be cut. In general, since the cutting insert is worn by repeating the cutting process, the cutting insert is detachably attached.

上記のような切削工具を用いた切削加工においては、切削工具又は被削材を高速で回転させるため、切削工具に振動やビビリが生じる場合があった。そこで、特許文献１に開示されているように、工具ホルダの先端部に凹部を設けて、この凹部に低弾性率の合金或いはゴムからなる部材を配設した切削工具が提案されている。
特開２００３−３３４７０２号公報 In the cutting process using the above cutting tool, the cutting tool or the work material is rotated at a high speed, which may cause vibration or chatter in the cutting tool. Therefore, as disclosed in Patent Document 1, there has been proposed a cutting tool in which a concave portion is provided at a tip portion of a tool holder, and a member made of a low elastic modulus alloy or rubber is disposed in the concave portion.
JP 2003-334702 A

特許文献１に開示されているように、工具ホルダの先端部に凹部を設けて、ここに低弾性率の部材を配設することにより、切削工具の振動をある程度抑制することができる。しかしながら、低弾性率の部材が設けられる部分が大きくなるほど、切削工具の振動を抑止する効果を高められるが、一方で、工具ホルダの耐久性が低下してしまう。   As disclosed in Patent Document 1, by providing a recess at the tip of the tool holder and disposing a member having a low elastic modulus therein, vibration of the cutting tool can be suppressed to some extent. However, the larger the portion where the low elastic modulus member is provided, the higher the effect of suppressing the vibration of the cutting tool, but the durability of the tool holder decreases.

本発明は、上記課題に鑑みてなされたものであり、工具ホルダの耐久性の低下を抑制しつつ、工具ホルダに生じる振動を効率よく抑制できる切削工具を提供することを目的とする。   This invention is made | formed in view of the said subject, and it aims at providing the cutting tool which can suppress efficiently the vibration which arises in a tool holder, suppressing the fall of durability of a tool holder.

本発明の切削工具は、上面及び下面を有する切削インサートと、先端部に前記切削インサートの下面が当接する座面を有し、該座面の下方に位置して先端方向に開口する凹部を備える工具ホルダと、前記凹部内に配置される振動吸収部材と、を具備する。   The cutting tool of the present invention includes a cutting insert having an upper surface and a lower surface, and a seat surface on which the lower surface of the cutting insert abuts on a tip portion, and a recess that is positioned below the seat surface and opens in the tip direction. A tool holder; and a vibration absorbing member disposed in the recess.

そして、前記振動吸収部材の上面の少なくとも一部が、前記工具ホルダの先端側から後端側に向かうにつれて前記座面に近づくように傾斜している。   And at least one part of the upper surface of the said vibration absorption member inclines so that it may approach the said seat surface as it goes to the rear end side from the front end side of the said tool holder.

本発明の切削工具によれば、振動吸収部材が上記のように座面に対して傾斜していることにより、下記の理由から工具ホルダに生じる振動を効率よく抑制できる。すなわち、切削インサートの切刃を被削材に接触させることにより切削加工が行われるが、このとき、座面の先端部分を波の発生源として、座面から工具ホルダの内方に振動が伝播する。そして、振動吸収部材が上記のように座面に対して傾斜していることにより、座面に対して平行である場合と比較して、上記振動の波面と振動吸収部材とがより平行に近い構成となる。これにより、振動吸収部材による減振効果を高めることができる。   According to the cutting tool of the present invention, since the vibration absorbing member is inclined with respect to the seat surface as described above, vibration generated in the tool holder can be efficiently suppressed for the following reason. In other words, cutting is performed by bringing the cutting blade of the cutting insert into contact with the work material. At this time, vibration propagates from the seat surface to the inside of the tool holder with the tip portion of the seat surface as a wave generation source. To do. And since the vibration absorbing member is inclined with respect to the seating surface as described above, the vibration wavefront and the vibration absorbing member are more parallel to each other than when the vibration absorbing member is parallel to the seating surface. It becomes composition. Thereby, the vibration damping effect by the vibration absorbing member can be enhanced.

以下、本発明の切削工具について図面を用いて説明する。   Hereinafter, the cutting tool of the present invention will be described with reference to the drawings.

図１、２に示すように、第１の実施形態にかかる切削工具１は、上面３ａ及び下面３ｂを有する切削インサート３と、先端部に切削インサート３の下面３ｂが当接する座面５を有し、座面５の下方に位置して先端方向に開口する凹部７を備える工具ホルダ９と、凹部７内に配置される振動吸収部材１１と、を具備している。   As shown in FIGS. 1 and 2, the cutting tool 1 according to the first embodiment has a cutting insert 3 having an upper surface 3 a and a lower surface 3 b, and a seat surface 5 on which the lower surface 3 b of the cutting insert 3 abuts at the tip. And a tool holder 9 having a recess 7 positioned below the seat surface 5 and opening in the distal direction, and a vibration absorbing member 11 disposed in the recess 7.

このように本実施形態では、工具ホルダ９に鋼のような振動を抑制する効果の相対的に低い部材を用いた場合であっても、切削加工時に生じる振動が伝わり易い部分に、振動吸収部材１１が備えられているので、工具ホルダ９における振動を効率よく抑制することができる。   As described above, in this embodiment, even when a member having a relatively low effect of suppressing vibration such as steel is used for the tool holder 9, the vibration absorbing member is provided in a portion where vibration generated during cutting is easily transmitted. 11 is provided, vibrations in the tool holder 9 can be efficiently suppressed.

そして、振動吸収部材１１の上面の少なくとも一部が、工具ホルダ９の先端側から後端側に向かうにつれて座面５に近づくように傾斜している。   Then, at least a part of the upper surface of the vibration absorbing member 11 is inclined so as to approach the seat surface 5 as it goes from the front end side to the rear end side of the tool holder 9.

切削工具１の使用時において、座面５の先端部分を波の発生源として、座面５から工具ホルダ９の内方に振動が伝播する。このとき、本実施形態のように、振動吸収部材１１が座面５に対して傾斜していることにより、上記振動の波面と振動吸収部材１１とがより平行に近い構成となる。これにより、振動吸収部材１１による減振効果を高めることができる。   When the cutting tool 1 is used, vibration is propagated from the seat surface 5 to the inside of the tool holder 9 using the tip portion of the seat surface 5 as a wave generation source. At this time, since the vibration absorbing member 11 is inclined with respect to the seating surface 5 as in the present embodiment, the vibration wavefront and the vibration absorbing member 11 are configured to be more parallel. Thereby, the vibration damping effect by the vibration absorbing member 11 can be enhanced.

図２に示すように、本実施形態の切削インサート３は、上面３ａ、下面３ｂ及び４つの側面３ｃを有する略直方体の形状をなしている。このとき、上面３ａがすくい面となり、側面３ｃが逃げ面となっている。そして、上面３ａと側面３ｃとの交差稜線には、切刃１３が形成されている。この切刃１３を被削材に接触させることにより、切削加工をすることができる。   As shown in FIG. 2, the cutting insert 3 of the present embodiment has a substantially rectangular parallelepiped shape having an upper surface 3a, a lower surface 3b, and four side surfaces 3c. At this time, the upper surface 3a is a rake face, and the side surface 3c is a flank face. And the cutting edge 13 is formed in the intersection ridgeline of the upper surface 3a and the side surface 3c. Cutting can be performed by bringing the cutting edge 13 into contact with the work material.

このように、切削インサート３の上面３ａと側面３ｃとの交差稜線に切刃１３が形成されていることから、本実施形態の切削工具１においては、切削加工に伴う振動が切削インサート３を介して座面５の先端部分に伝わる。そのため、座面５のうち先端部分が波の発生源となり、工具ホルダ９の内方に振動が伝播する。   As described above, since the cutting edge 13 is formed on the intersecting ridge line between the upper surface 3 a and the side surface 3 c of the cutting insert 3, in the cutting tool 1 of the present embodiment, vibrations associated with the cutting work are transmitted through the cutting insert 3. To the tip of the seating surface 5. Therefore, the tip portion of the seat surface 5 becomes a wave generation source, and vibration propagates inward of the tool holder 9.

また、切削インサート３は、複数の側面３ｃと上面３ａとの交差稜線にそれぞれ切刃１３を有していることが好ましい。このように複数の切刃１３を有することにより、切刃１３のうち使用している部分が摩耗した場合であっても、切削インサート３を回転させて、切刃１３のうち未使用の部分を使用することができる。   Moreover, it is preferable that the cutting insert 3 has the cutting blade 13 in the intersection ridgeline of the some side surface 3c and the upper surface 3a, respectively. By having a plurality of cutting blades 13 in this way, even if the used portion of the cutting blade 13 is worn, the cutting insert 3 is rotated to remove the unused portion of the cutting blade 13. Can be used.

振動吸収部材１１としては、工具ホルダ９よりも振動を吸収する効果の高い部材を用いればよく、具体的には、鉛のような金属やプラスチック及びゴムのような有機材料を用いることができる。特に、有機材料を用いることが好ましい。座面５の下方には、切削加工に伴い、相対的に大きな応力が加わる。しかしながら、有機材料は高い靱性を有していることから、工具ホルダ９の耐久性を高めることができる。   As the vibration absorbing member 11, a member having a higher effect of absorbing vibration than the tool holder 9 may be used. Specifically, a metal such as lead, or an organic material such as plastic and rubber can be used. In particular, it is preferable to use an organic material. A relatively large stress is applied to the lower portion of the seating surface 5 along with the cutting process. However, since the organic material has high toughness, the durability of the tool holder 9 can be enhanced.

振動吸収部材１１は、凹部７の開口部から振動吸収部材１１となる材料を充填することにより、凹部７内に配置することができる。この場合、凹部７の内壁面と振動吸収部材１１とを密着させることができるので、振動吸収部材１１による振動を減衰させる効果を高めることができる。   The vibration absorbing member 11 can be disposed in the concave portion 7 by filling the material to be the vibration absorbing member 11 from the opening of the concave portion 7. In this case, since the inner wall surface of the recess 7 and the vibration absorbing member 11 can be brought into close contact with each other, the effect of attenuating the vibration by the vibration absorbing member 11 can be enhanced.

また、振動吸収部材１１は、予め形成されたものを凹部７の開口部より挿入することにより、凹部７内に配置させてもよい。この場合、振動吸収部材１１を任意に交換することができる。そのため、被削材や加工条件に応じて適した振動吸収部材１１を用いることができる。また、振動吸収部材１１が、万が一破損した場合であっても、容易に取り替えることができる。   The vibration absorbing member 11 may be disposed in the recess 7 by inserting a previously formed member through the opening of the recess 7. In this case, the vibration absorbing member 11 can be arbitrarily replaced. Therefore, the vibration absorbing member 11 suitable for the work material and the processing conditions can be used. Further, even if the vibration absorbing member 11 is damaged, it can be easily replaced.

また、工具ホルダ９としては、超硬合金、鋼、鋳鉄などを用いることができる。特に、相対的に靱性の高い鋼を用いることが好ましい。   Moreover, as the tool holder 9, a cemented carbide, steel, cast iron, etc. can be used. In particular, it is preferable to use steel having relatively high toughness.

次に、本発明の第２の実施形態にかかる切削工具１について図面を用いて説明する。   Next, the cutting tool 1 concerning the 2nd Embodiment of this invention is demonstrated using drawing.

図３に示すように、第２の実施形態にかかる振動吸収部材１１の少なくとも一部は、座面５に対して垂直な方向の幅が、先端側における幅Ｌ２よりも後端側における幅Ｌ１が大きいテーパ形状である。このようなテーパ形状の部分１１ａ（以下、テーパ部１１ａともいう）を有していることにより、振動吸収部材１１が工具ホルダ９の先端部から抜け落ちる可能性を小さくすることができる。   As shown in FIG. 3, at least a part of the vibration absorbing member 11 according to the second embodiment has a width in the direction perpendicular to the seating surface 5 and a width L1 on the rear end side than the width L2 on the front end side. Has a large taper shape. By having such a tapered portion 11 a (hereinafter also referred to as a tapered portion 11 a), the possibility that the vibration absorbing member 11 falls off from the tip portion of the tool holder 9 can be reduced.

次に、本発明の第３の実施形態にかかる切削工具１について図面を用いて説明する。   Next, a cutting tool 1 according to a third embodiment of the present invention will be described with reference to the drawings.

図４、５に示すように、第３の実施形態にかかる切削工具１は、上面３ａ及び下面３ｂを有する切削インサート３と、先端部に切削インサート３の下面３ｂが当接する座面５を有し、座面５と離隔して座面５の下方に位置する凹部７を備える工具ホルダ９と、凹部７内に配置される振動吸収部材１１と、を具備している。   As shown in FIGS. 4 and 5, the cutting tool 1 according to the third embodiment has a cutting insert 3 having an upper surface 3 a and a lower surface 3 b, and a seat surface 5 on which the lower surface 3 b of the cutting insert 3 abuts at the tip. The tool holder 9 includes a recess 7 that is spaced apart from the seat surface 5 and positioned below the seat surface 5, and the vibration absorbing member 11 that is disposed in the recess 7.

そして、振動吸収部材１１の上面の少なくとも一部が、工具ホルダ９の側面側から中心側に向かうにつれて座面５に近づくように傾斜している。これにより、振動吸収部材１１が切削加工に伴う振動における振動の波面に対してより平行に近い構成となる。結果、振動吸収部材１１による減振効果を高めることができる。   Then, at least a part of the upper surface of the vibration absorbing member 11 is inclined so as to approach the seat surface 5 as it goes from the side surface side to the center side of the tool holder 9. Thereby, the vibration absorbing member 11 is configured to be more parallel to the vibration wavefront in the vibration associated with the cutting process. As a result, the vibration damping effect by the vibration absorbing member 11 can be enhanced.

次に、本発明の第４の実施形態にかかる切削工具１について図面を用いて説明する。   Next, the cutting tool 1 concerning the 4th Embodiment of this invention is demonstrated using drawing.

図６、７に示すように、本実施形態における振動吸収部材１１の少なくとも一部は、座面５に対して垂直な方向の幅が、側面側における幅Ｌ４よりも中心側における幅Ｌ３が大きいテーパ形状である。このようなテーパ部１１ａを有していることにより、振動吸収部材１１が工具ホルダ９の側面から抜け落ちる可能性を小さくすることができる。   As shown in FIGS. 6 and 7, at least a part of the vibration absorbing member 11 in the present embodiment has a width in the direction perpendicular to the seating surface 5 and a width L3 on the center side larger than the width L4 on the side surface side. Tapered shape. By having such a taper part 11a, the possibility that the vibration absorbing member 11 falls off from the side surface of the tool holder 9 can be reduced.

特に、本実施形態のように切削工具１が回転工具である場合、上記の構成が有効となる。これは、切削工具１がその使用時に回転するため、振動吸収部材１１には遠心力が加わり、工具ホルダ９の側面から抜け落ちやすくなるからである。   In particular, when the cutting tool 1 is a rotary tool as in this embodiment, the above configuration is effective. This is because, since the cutting tool 1 rotates during use, centrifugal force is applied to the vibration absorbing member 11, and it is easy to come off from the side surface of the tool holder 9.

なお、テーパ部１１ａは、図６に示すように、振動吸収部材１１全体であってもよく、また、図７に示すように、振動吸収部材１１の一部であってもよい。   The taper portion 11a may be the entire vibration absorbing member 11 as shown in FIG. 6, or may be a part of the vibration absorbing member 11 as shown in FIG.

また、図７に示すように、振動吸収部材１１の上面のうち、座面５と対向する部分の少なくとも一部が、座面５に対して平行であることが好ましい。これにより、座面５と振動吸収部材１１の距離のばらつきを小さくすることができるので、工具ホルダ９のうち、切削インサート３の下方に位置する部分に加わる応力のばらつきを小さくできる。結果として、工具ホルダ９の耐久性を向上させることができるからである。特に、振動吸収部材１１のうち切削インサート３と対向する部分が座面５に対して平行であって、この部分よりも工具ホルダの中心側に位置する部分がテーパ部１１ａであることが好ましい。   As shown in FIG. 7, it is preferable that at least a part of a portion of the upper surface of the vibration absorbing member 11 that faces the seating surface 5 is parallel to the seating surface 5. Thereby, since the dispersion | variation in the distance of the seat surface 5 and the vibration absorption member 11 can be made small, the dispersion | variation in the stress added to the part located under the cutting insert 3 among the tool holders 9 can be made small. As a result, the durability of the tool holder 9 can be improved. In particular, it is preferable that a portion of the vibration absorbing member 11 that faces the cutting insert 3 is parallel to the seating surface 5 and a portion that is located closer to the center of the tool holder than this portion is the tapered portion 11a.

次に、本発明の第５の実施形態にかかる切削工具１について図面を用いて説明する。   Next, a cutting tool 1 according to a fifth embodiment of the present invention will be described with reference to the drawings.

図８、９に示すように、本実施形態における凹部７は、工具ホルダ９の先端方向に開口している。第４の実施形態にかかる切削工具１のように、振動吸収部材１１がテーパ部１１ａを有している場合、凹部７が工具ホルダ９の先端方向にも開口していることにより、工具ホルダ９の先端方向から振動吸収部材１１を挿入することができる。   As shown in FIGS. 8 and 9, the recess 7 in the present embodiment is open toward the tip of the tool holder 9. When the vibration absorbing member 11 has the taper portion 11 a as in the cutting tool 1 according to the fourth embodiment, the recess 7 is also opened in the tip direction of the tool holder 9. The vibration absorbing member 11 can be inserted from the front end direction.

そして、本実施形態の切削工具１は、この先端方向に開口する開口部分の少なくとも一部を係止する係止部材１５を備えている。これにより、工具ホルダ９の先端方向から挿入された振動吸収部材１１が、先端方向から抜け落ちることを防止することができる。   And the cutting tool 1 of this embodiment is provided with the latching member 15 which latches at least one part of the opening part opened to this front end direction. Thereby, it is possible to prevent the vibration absorbing member 11 inserted from the front end direction of the tool holder 9 from falling off from the front end direction.

係止部材１５は、例えば、ねじ１７を用いて、工具ホルダ９にねじ止めすることにより固定できる。この時、振動吸収部材１１を介して係止部材１５を工具ホルダ９にねじ止めするのではなく、係止部材１５を直接、工具ホルダ９にねじ止めすることが好ましい。この場合には、振動吸収部材１１にねじ穴を形成する必要がないので、振動吸収部材１１の一部に切削加工に伴う応力が集中することを抑制できる。   The locking member 15 can be fixed by screwing to the tool holder 9 using, for example, a screw 17. At this time, it is preferable not to screw the locking member 15 to the tool holder 9 via the vibration absorbing member 11 but to screw the locking member 15 directly to the tool holder 9. In this case, since it is not necessary to form a screw hole in the vibration absorbing member 11, it is possible to suppress the stress accompanying the cutting process from being concentrated on a part of the vibration absorbing member 11.

係止部材１５としては、工具ホルダ９と同様に超硬合金、鋼、鋳鉄などを用いることができる。   As the locking member 15, as with the tool holder 9, cemented carbide, steel, cast iron or the like can be used.

次に、本発明の第６の実施形態にかかる切削工具１について図面を用いて説明する。   Next, a cutting tool 1 according to a sixth embodiment of the present invention will be described with reference to the drawings.

図１０に示すように、本実施形態における切削インサート３は、上面３ａ及び下面３ｂに開口する貫通孔１９ａを有している。また、工具ホルダ９は切削インサート３と振動吸収部材１１との間であって、切削インサート３の貫通孔１９ａの延長線上に位置する部分に貫通孔１９ｂを有している。そして、切削インサート３の貫通孔１９ａ及び工具ホルダ９の貫通孔１９ｂを通じて切削インサート３及び振動吸収部材１１を係止するねじ１７を備えている。   As shown in FIG. 10, the cutting insert 3 in this embodiment has a through-hole 19a that opens to the upper surface 3a and the lower surface 3b. The tool holder 9 has a through hole 19b between the cutting insert 3 and the vibration absorbing member 11 and in a portion located on the extension line of the through hole 19a of the cutting insert 3. And the screw | thread 17 which latches the cutting insert 3 and the vibrational absorption member 11 through the through-hole 19a of the cutting insert 3 and the through-hole 19b of the tool holder 9 is provided.

本実施形態の切削工具１は、１つのねじ１７で切削インサート３と振動吸収部材１１とを係止しているため、切削インサート３及び振動吸収部材１１をそれぞれ別の部材を用いて固定した場合と比較して、安価且つ簡易に固定することができる。   Since the cutting tool 1 of this embodiment has locked the cutting insert 3 and the vibrational absorption member 11 with the one screw 17, when the cutting insert 3 and the vibrational absorption member 11 are each fixed using another member, It can be fixed cheaply and easily compared to the above.

また、ねじ１７が、工具ホルダ９よりも弾性率が低い部材により構成されていることが好ましい。このような場合、切削インサート３の振動がねじ１７を介して振動吸収部材１１に伝わりやすくなるので、工具ホルダ９の振動をさらに抑制できるからである。   Moreover, it is preferable that the screw 17 is made of a member having a lower elastic modulus than the tool holder 9. In such a case, the vibration of the cutting insert 3 is easily transmitted to the vibration absorbing member 11 via the screw 17, so that the vibration of the tool holder 9 can be further suppressed.

なお、本発明は、上記の実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内で種々の変更を行うことは何ら差し支えない。例えば、上記の実施形態においては、切削工具１が回転工具である場合について示したが、回転する被削材に切削インサート３の切刃１３を接触させることにより切削加工を行うような切削工具１であっても何ら問題ない。   Note that the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the scope of the present invention. For example, in the above-described embodiment, the case where the cutting tool 1 is a rotating tool has been described. However, the cutting tool 1 that performs cutting by bringing the cutting blade 13 of the cutting insert 3 into contact with the rotating work material. But there is no problem.

次に、上記の実施形態にかかる切削工具１を用いて被削材を切削する切削方法について図面を用いて説明する。   Next, a cutting method for cutting a work material using the cutting tool 1 according to the above embodiment will be described with reference to the drawings.

まず、工具ホルダ９に切削インサート３を取付ける。そして、図１１に示すように、切削工具１を回転させるとともに、切削工具１を被削材２１に近づける。なお、切削工具１と被削材２１は、相対的に近づけば良く、例えば、被削材２１を切削工具１に近づけても良い。   First, the cutting insert 3 is attached to the tool holder 9. Then, as shown in FIG. 11, the cutting tool 1 is rotated and the cutting tool 1 is brought close to the work material 21. Note that the cutting tool 1 and the work material 21 may be relatively close to each other. For example, the work material 21 may be close to the cutting tool 1.

次いで、図１２に示すように、切削インサート３の切刃１３を被削材２１に接触させて被削材２１を切削する。その後、図１３に示すように被削材２１から切削工具１を離間させる。なお、切削加工を継続する場合は、切削工具１を回転させた状態を維持して、被削材２１の異なる箇所に切削インサート３の切刃１３を接触させる工程を繰り返す。   Next, as shown in FIG. 12, the work material 21 is cut by bringing the cutting edge 13 of the cutting insert 3 into contact with the work material 21. Thereafter, the cutting tool 1 is separated from the work material 21 as shown in FIG. In addition, when continuing a cutting process, the state which rotated the cutting tool 1 is maintained and the process of making the cutting blade 13 of the cutting insert 3 contact the different location of the workpiece 21 is repeated.

なお、本実施形態では、転削加工を切削方法として例示しているが、旋削加工のような他の切削加工においても用いることができる。   In the present embodiment, the rolling process is exemplified as the cutting method, but it can be used in other cutting processes such as a turning process.

本発明の第１の実施形態にかかる切削工具を示す斜視図である。It is a perspective view which shows the cutting tool concerning the 1st Embodiment of this invention. 図１に示す実施形態にかかる切削工具の振動吸収部材が配設された部分を拡大した斜視図であって、切削インサートが工具ホルダから取り外された状態を示す拡大斜視図である。It is the perspective view which expanded the part by which the vibration absorption member of the cutting tool concerning embodiment shown in FIG. 1 was arrange | positioned, Comprising: It is an enlarged perspective view which shows the state from which the cutting insert was removed from the tool holder. 本発明の第２の実施形態にかかる切削工具を示す斜視図である。It is a perspective view which shows the cutting tool concerning the 2nd Embodiment of this invention. 本発明の第３の実施形態にかかる切削工具を示す斜視図である。It is a perspective view which shows the cutting tool concerning the 3rd Embodiment of this invention. 図４に示す実施形態にかかる底面図である。It is a bottom view concerning embodiment shown in FIG. 本発明の第４の実施形態にかかる切削工具を示す底面図である。It is a bottom view which shows the cutting tool concerning the 4th Embodiment of this invention. 本発明の第４の実施形態にかかる切削工具の変形例を示す底面図である。It is a bottom view which shows the modification of the cutting tool concerning the 4th Embodiment of this invention. 本発明の第５の実施形態にかかる切削工具を示す底面図である。It is a bottom view which shows the cutting tool concerning the 5th Embodiment of this invention. 図８に示す実施形態にかかる斜視図であって、振動吸収部材が工具ホルダから取り外された状態を示す斜視図である。It is a perspective view concerning the embodiment shown in Drawing 8, and is a perspective view showing the state where the vibration absorption member was removed from the tool holder. 本発明の第６の実施形態にかかる切削工具を示す斜視図であって、切削インサート及び振動吸収部材が工具ホルダから取り外された状態を示す斜視図である。It is a perspective view which shows the cutting tool concerning the 6th Embodiment of this invention, Comprising: It is a perspective view which shows the state by which the cutting insert and the vibrational absorption member were removed from the tool holder. 本発明の一実施形態にかかる切削方法の工程図である。It is process drawing of the cutting method concerning one Embodiment of this invention. 本発明の一実施形態にかかる切削方法の工程図である。It is process drawing of the cutting method concerning one Embodiment of this invention. 本発明の一実施形態にかかる切削方法の工程図である。It is process drawing of the cutting method concerning one Embodiment of this invention.

符号の説明Explanation of symbols

１・・・切削工具
３・・・切削インサート
３ａ・・・上面
３ｂ・・・下面
３ｃ・・・側面
５・・・座面
７・・・凹部
９・・・工具ホルダ
１１・・・振動吸収部材
１１ａ・・・テーパ部
１３・・・切刃
１５・・・係止部材
１７・・・ねじ
１９・・・貫通孔
２１・・・被削材
DESCRIPTION OF SYMBOLS 1 ... Cutting tool 3 ... Cutting insert 3a ... Upper surface 3b ... Lower surface 3c ... Side surface 5 ... Seat surface 7 ... Recess 9 ... Tool holder 11 ... Vibration absorption Member 11a ... Tapered portion 13 ... Cutting blade 15 ... Locking member 17 ... Screw 19 ... Through hole 21 ... Work material

Claims (8)

上面及び下面を有する切削インサートと、先端部に前記切削インサートの下面が当接する座面を有し、該座面の下方に位置して先端方向に開口する凹部を備える工具ホルダと、前記凹部内に配置される振動吸収部材と、を具備する切削工具であって、
前記振動吸収部材の上面の少なくとも一部が、前記工具ホルダの先端側から後端側に向かうにつれて前記座面に近づくように傾斜していることを特徴とする切削工具。 A cutting insert having an upper surface and a lower surface, a tool holder having a seating surface with which the lower surface of the cutting insert abuts on the tip, and having a recess positioned below the seating surface and opening in the tip direction, and in the recess A vibration absorbing member disposed on the cutting tool,
A cutting tool characterized in that at least a part of the upper surface of the vibration absorbing member is inclined so as to approach the seat surface from the front end side to the rear end side of the tool holder. 前記振動吸収部材の少なくとも一部は、前記座面に対して垂直な方向の幅が、先端側における幅よりも後端側における幅が大きいテーパ形状であることを特徴とする請求項１に記載の切削工具。   2. The taper shape according to claim 1, wherein at least a part of the vibration absorbing member has a tapered shape in which a width in a direction perpendicular to the seating surface is larger on a rear end side than on a front end side. Cutting tools. 上面及び下面を有する切削インサートと、先端部に前記切削インサートの下面が当接する座面を有し、該座面の下方に位置して側面方向に開口する凹部を備える工具ホルダと、前記凹部内に配置される振動吸収部材と、を具備する切削工具であって、
前記振動吸収部材の上面の少なくとも一部が、前記工具ホルダの側面側から中心側に向かうにつれて前記座面に近づくように傾斜していることを特徴とする切削工具。 A cutting insert having an upper surface and a lower surface, a tool holder having a seating surface with which the lower surface of the cutting insert abuts on the tip, a recess positioned below the seating surface and opening in the side surface direction; A vibration absorbing member disposed on the cutting tool,
A cutting tool characterized in that at least a part of the upper surface of the vibration absorbing member is inclined so as to approach the seat surface from the side surface side to the center side of the tool holder. 前記振動吸収部材の少なくとも一部は、前記座面に対して垂直な方向の幅が、側面側における幅よりも中心側における幅が大きいテーパ形状であることを特徴とする請求項３に記載の切削工具。   4. The taper shape according to claim 3, wherein at least a part of the vibration absorbing member has a tapered shape in which a width in a direction perpendicular to the seating surface is larger at a center side than at a side surface side. Cutting tools. 前記振動吸収部材の上面のうち、前記切削インサートの下面と対向する部分の少なくとも一部が、前記座面に対して平行であることを特徴とする請求項１又は３に記載の切削工具。   4. The cutting tool according to claim 1, wherein at least a part of a portion of the upper surface of the vibration absorbing member facing the lower surface of the cutting insert is parallel to the seating surface. 前記凹部は、前記工具ホルダの先端方向に開口し、この開口部分の少なくとも一部を係止する係止部材を備えたことを特徴とする請求項１又は３に記載の切削工具。   4. The cutting tool according to claim 1, wherein the concave portion includes a locking member that opens in a distal direction of the tool holder and locks at least a part of the opening portion. 前記切削インサートは、前記上面及び下面に開口する貫通孔を有し、前記工具ホルダは前記切削インサートと前記振動吸収部材との間であって、前記切削インサートの貫通孔の延長上に位置する部分に貫通孔を有し、前記切削インサートの貫通孔及び前記工具ホルダの貫通孔を貫通して前記切削インサートと前記振動吸収部材とを係止するねじを備えたことを特徴とする請求項１又は３に記載の切削工具。   The cutting insert has a through hole that opens to the upper surface and the lower surface, and the tool holder is located between the cutting insert and the vibration absorbing member and is located on an extension of the through hole of the cutting insert. Or a screw for engaging the cutting insert and the vibration absorbing member through the through hole of the cutting insert and the through hole of the tool holder. 3. The cutting tool according to 3. 請求項１〜７のいずれかに記載の切削工具を用いて被削材を加工する方法であって、
前記被削材に前記切削工具を相対的に近付ける工程と、
前記切削工具または前記被削材を回転させ、前記切削工具の切刃を前記被削材に接触させて、前記被削材を切削する工程と、
前記被削材と前記切削工具を相対的に遠ざける工程と、
を具えることを特徴とする切削方法。
A method for processing a work material using the cutting tool according to claim 1,
A step of relatively bringing the cutting tool close to the work material;
Rotating the cutting tool or the work material, bringing a cutting edge of the cutting tool into contact with the work material, and cutting the work material;
A step of relatively moving the work material and the cutting tool away from each other;
A cutting method characterized by comprising:
JP2008075502A 2008-03-24 2008-03-24 Cutting tool and cutting method using same Pending JP2009226548A (en)

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Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2366481A1 (en) * 2010-03-17 2011-09-21 Sandvik Intellectual Property AB A millling tool for cutting machining
US8529173B2 (en) 2008-01-22 2013-09-10 Valenite, Llc Method to align characteristic frequency of material removal tool and rotation speed of spindle of machine tool and material removal tool so aligned
US8956092B2 (en) 2009-05-25 2015-02-17 Sandvik Intellectual Property Ab Device and method for milling of materials
US11819925B2 (en) 2021-09-30 2023-11-21 Kennametal Inc. Damper system for cutting tool

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8529173B2 (en) 2008-01-22 2013-09-10 Valenite, Llc Method to align characteristic frequency of material removal tool and rotation speed of spindle of machine tool and material removal tool so aligned
US8956092B2 (en) 2009-05-25 2015-02-17 Sandvik Intellectual Property Ab Device and method for milling of materials
EP2366481A1 (en) * 2010-03-17 2011-09-21 Sandvik Intellectual Property AB A millling tool for cutting machining
CN102189290A (en) * 2010-03-17 2011-09-21 山特维克知识产权股份有限公司 A millling tool for cutting machining
KR20110104896A (en) * 2010-03-17 2011-09-23 산드빅 인터렉츄얼 프로퍼티 에이비 A milling tool for cutting machining
JP2011194564A (en) * 2010-03-17 2011-10-06 Sandvik Intellectual Property Ab Milling tool for machining
US8702352B2 (en) 2010-03-17 2014-04-22 Sandvik Intellectual Property Ab Milling tool for cutting machining
KR101687839B1 (en) * 2010-03-17 2016-12-19 산드빅 인터렉츄얼 프로퍼티 에이비 A milling tool for cutting machining
US11819925B2 (en) 2021-09-30 2023-11-21 Kennametal Inc. Damper system for cutting tool

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