JP5346611B2 - Face milling tool device - Google Patents

Face milling tool device Download PDF

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JP5346611B2
JP5346611B2 JP2009032238A JP2009032238A JP5346611B2 JP 5346611 B2 JP5346611 B2 JP 5346611B2 JP 2009032238 A JP2009032238 A JP 2009032238A JP 2009032238 A JP2009032238 A JP 2009032238A JP 5346611 B2 JP5346611 B2 JP 5346611B2
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tool
tool body
cover
hole
rotation
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JP2010188431A (en
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泰教 豊田
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Toyo Tanso Co Ltd
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Description

本発明は、工作機械に使用される面削工具装置に関し、より詳しくは切削の結果生成する切屑等の粉塵を効率良く排除することができる面削工具装置に関するものである。   The present invention relates to a chamfering tool device used in a machine tool, and more particularly to a chamfering tool device capable of efficiently removing dust such as chips generated as a result of cutting.

一般に、フライス盤等の工作機械において、切削工具により被被加工物の表面を切削した場合には、切屑が切削工具の周囲に飛散するという問題があった。   Generally, in a machine tool such as a milling machine, when the surface of a workpiece is cut with a cutting tool, there is a problem that chips are scattered around the cutting tool.

そこで、このような不具合を解消する一般的な対策として、切削工具の外周をカバーで覆い、カバー内の空気を吸引し、空気と共に切粉を加工スペースの外部へ排出することが行われている（以下の特許文献１参照）。   Therefore, as a general measure for solving such a problem, the outer periphery of the cutting tool is covered with a cover, the air in the cover is sucked, and the chips are discharged together with the air to the outside of the processing space. (See Patent Document 1 below).

図９を参照して、具体的に説明すると、下面に切削刃１００を設けた工具本体１０１の外周に、カバー１０２を配置し、このカバー１０２における工具本体上面側の部分に、集塵ダクト１０３が接続されている。そして、この集塵ダクト１０３を集塵機等の吸引源に接続した状態で、被加工物１０４の切削が行われ、切削に伴って発生する切屑が集塵ダクト１０３を介して集塵機等の吸引源に吸引捕捉されるようになっている。   More specifically, with reference to FIG. 9, a cover 102 is disposed on the outer periphery of the tool body 101 having the cutting blade 100 provided on the lower surface, and a dust collection duct 103 is provided on a portion of the cover 102 on the upper surface side of the tool body. Is connected. Then, the workpiece 104 is cut in a state where the dust collection duct 103 is connected to a suction source such as a dust collector, and chips generated by the cutting are passed through the dust collection duct 103 to a suction source such as a dust collector. Aspiration is captured.

特開平０６−１４３０８７号公報Japanese Patent Laid-Open No. 06-143087

しかしながら、工具本体１０１とカバー１０２の隙間が狭いと、吸引力が小さくなり、粉塵を充分に吸い上げることができない。特に、被加工物１０４の外周側に飛散せずに、工具本体１０１と被加工物１０４との間に存在する粉塵は吸引が困難であり、残存した粉塵は人手により除去していた。   However, if the gap between the tool body 101 and the cover 102 is narrow, the suction force becomes small, and the dust cannot be sucked up sufficiently. In particular, the dust existing between the tool main body 101 and the workpiece 104 without scattering to the outer peripheral side of the workpiece 104 is difficult to be sucked, and the remaining dust is manually removed.

本発明は、上記の実情を鑑みて考え出されたものであり、その目的は、切削の結果生成する切屑等の粉塵を効率良く排除することができる面削工具装置を提供することである。   The present invention has been conceived in view of the above circumstances, and an object of the present invention is to provide a surface cutting tool device that can efficiently remove dust such as chips generated as a result of cutting.

上記目的を達成するため本発明は、工作機械の回転主軸が取り付けられ、下面に切削刃を備えた工具本体と、工具本体の側方を覆う側部カバー部と工具本体の上方を覆う上カバー部とを備えたカバーと、カバーに接続され、切削時に発生した切屑等の粉塵を吸引する集塵ダクトと、を備え、前記回転主軸の回転により工具本体を回転主軸の軸線まわりに回転させて、前記切削刃により被加工物の表面を切削加工する面削工具装置であって、前記工具本体には貫通穴が形成されており、前記集塵ダクトは前記カバーの上カバー部に接続されており、前記貫通穴における前記工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて前記回転方向の後方側に拡開する第１の面取り部が形成されていることを特徴とする。 In order to achieve the above object, the present invention provides a tool main body having a rotating spindle of a machine tool and having a cutting blade on the lower surface, a side cover portion covering the side of the tool main body, and an upper cover covering the upper side of the tool main body. And a dust collection duct that is connected to the cover and sucks dust such as chips generated at the time of cutting, and rotates the tool main body around the axis of the rotation spindle by rotating the rotation spindle. A cutting tool device for cutting a surface of a workpiece by the cutting blade, wherein the tool body has a through hole, and the dust collecting duct is connected to an upper cover portion of the cover. And the 1st chamfering part which spreads to the back side of the said rotation direction is formed in the peripheral part of the rotation direction back side of the said tool main body in the said through hole toward the upper surface side from a lower surface side. It is characterized by that.

上記の如く、工具本体に貫通穴を形成することにより、工具本体の下面側の空気が上面側に流れ込む空気通路が形成される。そのため、切削時に、被加工物の外周側に飛散せずに、被加工物の表面に残存する粉塵を貫通穴を介して工具本体の上面側に吸引することが可能となる。従って、従来例に比べて、切屑等の粉塵を効率良く排除できる。
また、上記の如く、貫通穴における工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて回転方向の後方側に拡開する第１の面取り部が形成されている構成であれば、工具本体が回転すると、貫通穴内の空気が回転方向の後方側に移動し、第１の面取り部に当たって圧縮された状態で上方に吸い出される。従って、工具本体の下面側から貫通穴を通り工具本体の上面側に流れる気流が発生し、この気流の発生により、工具本体の上面側が負圧状態となり、吸引力が発生する。この結果、効率良く粉塵を除去することが可能となる。 As described above, by forming a through hole in the tool body, an air passage through which air on the lower surface side of the tool body flows into the upper surface side is formed. Therefore, during cutting, dust remaining on the surface of the workpiece can be sucked to the upper surface side of the tool body through the through hole without scattering to the outer peripheral side of the workpiece. Accordingly, dust such as chips can be efficiently removed as compared with the conventional example.
Further, as described above, a first chamfered portion that is widened to the rear side in the rotation direction from the lower surface side to the upper surface side is formed at the peripheral portion on the rear side in the rotation direction of the tool body in the through hole. If the tool body is rotated, the air in the through hole moves to the rear side in the rotation direction and hits the first chamfer and is sucked upward in a compressed state. Accordingly, an airflow that flows from the lower surface side of the tool main body to the upper surface side of the tool main body through the through hole is generated, and due to the generation of this airflow, the upper surface side of the tool main body is in a negative pressure state and a suction force is generated. As a result, dust can be efficiently removed.

また、本発明は、工作機械の回転主軸が取り付けられ、下面に切削刃を備えた工具本体と、工具本体の側方を覆う側部カバー部と工具本体の上方を覆う上カバー部とを備えたカバーと、カバーに接続され、切削時に発生した切屑等の粉塵を吸引する集塵ダクトと、を備え、前記回転主軸の回転により工具本体を回転主軸の軸線まわりに回転させて、前記切削刃により被加工物の表面を切削加工する面削工具装置であって、前記工具本体には貫通穴が形成されており、前記集塵ダクトは前記カバーの側部カバー部に接続されており、該集塵ダクトの吸引口が工具本体と上カバー部との間の空間に臨んでおり、前記貫通穴における前記工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて前記回転方向の後方側に拡開する第１の面取り部が形成されていることを特徴とする。
上記の如く、集塵ダクトが、カバーの側部カバー部に接続されており、該集塵ダクトの吸引口が工具本体と上カバー部との間の空間に臨んでいる構成であれば、工具本体の上面側に吸引された粉塵に集塵機等の吸引力が大きく作用するので、効率良く粉塵が吸引される。 The present invention also includes a tool main body having a rotating spindle of a machine tool and having a cutting blade on the lower surface, a side cover portion covering the side of the tool main body, and an upper cover portion covering the upper side of the tool main body. And a dust collecting duct that is connected to the cover and sucks dust such as chips generated at the time of cutting, and rotates the tool main body around the axis of the rotary spindle by rotating the rotary spindle, and the cutting blade A surface cutting tool device for cutting a surface of a workpiece by a through hole formed in the tool body, the dust collecting duct is connected to a side cover portion of the cover, The suction port of the dust collection duct faces the space between the tool main body and the upper cover part, and the peripheral edge of the tool body at the rear side in the rotation direction of the tool main body from the lower surface side toward the upper surface side. And expand to the rear side in the rotation direction Wherein the first chamfered portion is formed.
As described above, the dust collecting duct is connected to the side cover portion of the cover, with the configuration in which the suction port of the dust collecting duct faces the space between the tool body and the upper cover section, the tool Since the suction force of the dust collector or the like acts on the dust sucked on the upper surface side of the main body, the dust is sucked efficiently.

また、本発明は、工作機械の回転主軸が取り付けられ、下面に切削刃を備えた工具本体と、工具本体の側方を覆う側部カバー部と工具本体の上方を覆う上カバー部とを備えたカバーと、カバーに接続され、切削時に発生した切屑等の粉塵を吸引する集塵ダクトと、を備え、前記回転主軸の回転により工具本体を回転主軸の軸線まわりに回転させて、前記切削刃により被加工物の表面を切削加工する面削工具装置であって、前記工具本体には貫通穴が形成されており、前記工具本体は円盤状であり、前記貫通穴は工具本体の周方向に等間隔をあけて複数個形成されており、前記貫通穴における前記工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて前記回転方向の後方側に拡開する第１の面取り部が形成されていることを特徴とする。
上記の如く、前記工具本体は円盤状であり、前記貫通穴は工具本体の周方向に等間隔をあけて複数個形成されている構成であれば、工具本体と被加工物との間に存在する粉塵を複数の貫通穴から吸引できるので、被加工物の表面に残存する粉塵を均一に且つ効率良く除去することが可能となる。 The present invention also includes a tool main body having a rotating spindle of a machine tool and having a cutting blade on the lower surface, a side cover portion covering the side of the tool main body, and an upper cover portion covering the upper side of the tool main body. And a dust collecting duct that is connected to the cover and sucks dust such as chips generated at the time of cutting, and rotates the tool main body around the axis of the rotary spindle by rotating the rotary spindle, and the cutting blade A surface cutting tool device that cuts the surface of a workpiece by a through-hole formed in the tool body, the tool body is disc-shaped, and the through-hole is formed in a circumferential direction of the tool body. A plurality of them are formed at equal intervals, and at the peripheral edge of the tool main body in the rotation direction rear side in the through hole, it expands toward the rear side in the rotation direction from the lower surface side to the upper surface side. The first chamfer is formed The features.
As described above, the tool body is disc-shaped, exists between the long through-hole configuration that is a plurality formed at equal intervals in the circumferential direction of the tool body, the tool body and the workpiece since the dust to be sucked from the plurality of through holes, that Do is possible to uniformly and efficiently remove dust remaining on the surface of the workpiece.

第１の面取り部は傾斜面とされているのが好ましい。
さらに、傾斜面の傾斜角度が１０度〜７０度の範囲であるのが好ましい。このように規制するのは以下の理由による。即ち、傾斜角度は小さい方が空気の流れが円滑になるので吸引効果は大きくなる。しかし、１０度より小さいと、空気の流れが円滑になり過ぎて負圧が低下する。一方、傾斜角度θが７０度より大きいと、負圧が殆ど生じないので、吸引効果が発揮されないからである。
 The first chamfered portion is preferably an inclined surface.
Furthermore, the inclination angle of the inclined surface is preferably in the range of 10 degrees to 70 degrees. The reason for this restriction is as follows. That is, the smaller the angle of inclination, the smoother the air flow, and the greater the suction effect. However, if it is less than 10 degrees, the air flow becomes too smooth and the negative pressure decreases. On the other hand, if the inclination angle θ is greater than 70 degrees, a negative pressure is hardly generated, so that the suction effect is not exhibited.

本発明は、貫通穴における工具本体の回転方向前方側の周縁部には、上面側から下面側に向かうに連れて回転方向の前方側に拡開するような傾斜面とされた第２の面取り部が形成されている場合がある。このような第２の面取り部を形成することにより、第２の面取り部に案内されて、工具本体の下面側から貫通穴内に空気が円滑に流れ込むことから、粉塵を効率良く排除することができる。   The present invention provides a second chamfer having an inclined surface that expands toward the front side in the rotation direction from the upper surface side toward the lower surface side at the peripheral portion on the front side in the rotation direction of the tool body in the through hole. A part may be formed. By forming such a second chamfered portion, air is smoothly guided from the lower surface side of the tool body into the through hole by being guided by the second chamfered portion, so that dust can be efficiently eliminated. .

本発明によれば、工具本体に貫通穴を形成することにより、工具本体の下面側の空気が上面側に流れ込む空気通路が形成される。そのため、切削時に、被加工物の外周側に飛散せずに、被加工物の表面に残存する粉塵を貫通穴を介して工具本体の上面側に吸引することが可能となる。従って、従来例に比べて、切屑等の粉塵を効率良く排除できる。   According to the present invention, by forming a through hole in the tool body, an air passage through which air on the lower surface side of the tool body flows into the upper surface side is formed. Therefore, during cutting, dust remaining on the surface of the workpiece can be sucked to the upper surface side of the tool body through the through hole without scattering to the outer peripheral side of the workpiece. Accordingly, dust such as chips can be efficiently removed as compared with the conventional example.

実施の形態１に係る面削工具装置の簡略化した断面図。FIG. 2 is a simplified cross-sectional view of the surface cutting tool device according to the first embodiment. 図１のＡ１−Ａ１線矢視平面図。The A1-A1 arrow top view of FIG. 図２のＡ２−Ａ２線矢視断面図。FIG. 3 is a cross-sectional view taken along line A2-A2 of FIG. 図２のＡ３−Ａ３線矢視断面図。FIG. 3 is a cross-sectional view taken along line A3-A3 in FIG. 実施の形態２に係る面削工具装置における工具本体の平面図。The top view of the tool main body in the surface cutting tool apparatus which concerns on Embodiment 2. FIG. 図５のＡ４−Ａ４線矢視断面図。FIG. 6 is a cross-sectional view taken along line A4-A4 of FIG. 面取り部の変形例を示す断面図。Sectional drawing which shows the modification of a chamfer. 実施の形態３に係る面削工具装置における工具本体の貫通穴付近の断面図。Sectional drawing of the through-hole vicinity of the tool main body in the surface cutting tool apparatus which concerns on Embodiment 3. FIG. 従来例の構成を示す断面図。Sectional drawing which shows the structure of a prior art example.

以下、本発明を実施の形態に基づいて詳述する。なお、本発明は、以下の実施の形態に限定されるものではない。   Hereinafter, the present invention will be described in detail based on embodiments. Note that the present invention is not limited to the following embodiments.

（実施の形態１）
図１は実施の形態１に係る面削工具装置の簡略化した断面図、図２は図１のＡ１−Ａ１線矢視断面図、図３は図２のＡ２−Ａ２線矢視断面図、図４は図２のＡ３−Ａ３線矢視断面図である。面削工具装置１は、下面にダイヤモンド製の切削刃２を備えた円盤状の工具本体３と、工具本体３の周囲を覆うカバー４とを有する。カバー４は、工具本体３の側方を覆う側部カバー部４ａと、工具本体３の上方を覆う上カバー部４ｂとを備えている。工作機械の回転主軸６は上カバー部４ｂの中央部を挿通して下方に延び、さらに、工具本体３の中央部を挿通し、工具本体３の下面側でネジ９によりネジ止めされ、回転主軸６が工具本体３と連結固定されている。従って、回転主軸６の回転により、工具本体３は回転主軸６の軸線まわりに回転方向Ｒに回転し、切削刃２により例えば黒鉛部材等の被加工物１０の表面を切削加工するようになっている。
なお、カバー４の側部カバー部４ａには集塵ダクト１１が接続されており、工具本体３と上カバー部４ｂとの間の空間１２に集塵ダクト１１の吸引口１１ａが臨んでいる。 (Embodiment 1)
1 is a simplified cross-sectional view of the chamfering tool device according to Embodiment 1, FIG. 2 is a cross-sectional view taken along line A1-A1 in FIG. 1, and FIG. 3 is a cross-sectional view taken along line A2-A2 in FIG. 4 is a cross-sectional view taken along line A3-A3 in FIG. The chamfering tool device 1 includes a disk-shaped tool body 3 having a diamond cutting blade 2 on the lower surface, and a cover 4 that covers the periphery of the tool body 3. The cover 4 includes a side cover portion 4 a that covers the side of the tool body 3 and an upper cover portion 4 b that covers the upper side of the tool body 3. The rotating spindle 6 of the machine tool extends through the central portion of the upper cover portion 4b and extends downward. Further, the rotating spindle 6 passes through the central portion of the tool body 3, and is screwed with a screw 9 on the lower surface side of the tool body 3. 6 is connected and fixed to the tool body 3. Therefore, the tool main body 3 rotates in the rotation direction R around the axis of the rotation main shaft 6 by the rotation of the rotation main shaft 6, and the surface of the workpiece 10 such as a graphite member is cut by the cutting blade 2. Yes.
Note that the dust collection duct 11 is connected to the side cover portion 4a of the cover 4, and the suction port 11a of the dust collection duct 11 faces the space 12 between the tool body 3 and the upper cover portion 4b.

ここで注目すべきは、工具本体３には、図２に示すように、周方向に等間隔をあけて複数個（本実施の形態では４個）の貫通穴１３が形成されていることである。このように貫通穴１３を形成することにより、工具本体３の下面側の空気が上面側に流れ込む空気通路が形成される。そのため、切削時に、被加工物１０の外周側に飛散せずに、被加工物１０の表面に残存する粉塵を貫通穴１３を介して工具本体３の上面側に吸引することが可能となる。そして、貫通穴１３から空間１２に導かれた粉塵は、集塵ダクト１１内に吸引されることになる。従って、切削の結果生成する切屑等の粉塵を効率良く排除することができる。   It should be noted that the tool body 3 has a plurality of (four in the present embodiment) through-holes 13 formed at equal intervals in the circumferential direction, as shown in FIG. is there. By forming the through hole 13 in this way, an air passage through which air on the lower surface side of the tool body 3 flows to the upper surface side is formed. Therefore, dust remaining on the surface of the workpiece 10 can be sucked to the upper surface side of the tool body 3 through the through hole 13 without being scattered on the outer peripheral side of the workpiece 10 at the time of cutting. Then, the dust guided from the through hole 13 to the space 12 is sucked into the dust collection duct 11. Therefore, dust such as chips generated as a result of cutting can be efficiently removed.

なお、貫通穴１３の形状は特に限定されず、円形、楕円形、矩形等のいずれの形状であってもよい。また、貫通穴１３の個数及び形成位置は特に限定されないが、本実施の形態のように周方向に等間隔をあけて複数個形成するのが好ましい。このように構成すれば、工具本体３と被加工物１０との間に存在する粉塵を複数の貫通穴１３から吸引できるので、被加工物１０の表面に残存する粉塵を均一に且つ効率良く除去することが可能となる。   The shape of the through hole 13 is not particularly limited, and may be any shape such as a circle, an ellipse, and a rectangle. Further, the number of through holes 13 and the formation positions are not particularly limited, but it is preferable to form a plurality of through holes 13 at equal intervals in the circumferential direction as in this embodiment. If comprised in this way, since the dust which exists between the tool main body 3 and the workpiece 10 can be attracted | sucked from the several through-hole 13, the dust which remains on the surface of the workpiece 10 will be removed uniformly and efficiently. It becomes possible to do.

（実施の形態２）
図５は実施の形態２に係る面削工具装置における工具本体の平面図、図６は図５のＡ４−Ａ４線矢視断面図である。本実施の形態２において、実施の形態１と同一の構成要素については同一の参照符号を付し、詳細な説明は省略する。本実施の形態２では、貫通穴１３の回転方向Ｒの後方側の周縁部には、下面側から上面側に向かうに連れて回転方向Ｒの後方側に拡開するような傾斜面とされた第１の面取り部２０が形成されている。このような第１の面取り部２０を形成することにより、切削の結果生成する切屑等の粉塵をより効率良く排除することができる。以下にその理由を述べる。即ち、工具本体３が回転すると、貫通穴１３内の空気が回転方向Ｒの後方側に移動し、傾斜面となっている第１の面取り部２０に当たって圧縮された状態で上方に吸い出される。従って、工具本体３の下面側から貫通穴１３を通り工具本体３の上面側に流れる気流が発生し、この気流の発生により、工具本体３の上面側が負圧状態となり、吸引力が発生する。従って、工具本体３の回転により発生する吸引力が集塵機の吸引力に加わることになり、切削の結果生成する切屑等の粉塵をより効率良く排除することができることになる。 (Embodiment 2)
FIG. 5 is a plan view of a tool body in the surface cutting tool device according to Embodiment 2, and FIG. 6 is a cross-sectional view taken along line A4-A4 in FIG. In the second embodiment, the same components as those in the first embodiment are denoted by the same reference numerals, and detailed description thereof is omitted. In the second embodiment, the peripheral edge on the rear side in the rotation direction R of the through-hole 13 has an inclined surface that expands toward the rear side in the rotation direction R from the lower surface side toward the upper surface side. A first chamfered portion 20 is formed. By forming the first chamfered portion 20 as described above, dust such as chips generated as a result of cutting can be more efficiently removed. The reason is described below. That is, when the tool body 3 rotates, the air in the through-hole 13 moves to the rear side in the rotation direction R, and is sucked upward in a compressed state by hitting the first chamfered portion 20 that is an inclined surface. Therefore, an airflow that flows from the lower surface side of the tool body 3 to the upper surface side of the tool body 3 through the through hole 13 is generated, and due to the generation of this airflow, the upper surface side of the tool body 3 is in a negative pressure state and a suction force is generated. Therefore, the suction force generated by the rotation of the tool body 3 is added to the suction force of the dust collector, and dust such as chips generated as a result of cutting can be more efficiently removed.

第１の面取り部２０の傾斜面の傾斜角度θとしては、１０度〜７０度が好ましい。傾斜角度θは小さい方が空気の流れが円滑になるので吸引効果は大きくなる。しかし、１０度より小さいと、空気の流れが円滑になり過ぎて負圧が低下する。一方、傾斜角度θが７０度より大きいと、負圧が殆ど生じないので、吸引効果が発揮されない。
なお、第１の面取り部２０は傾斜面に限らず、図７（１）に示すように、円弧状の湾曲面であってもよく、また、図７（２）に示すように、段差面状であってもよい。 The inclination angle θ of the inclined surface of the first chamfered portion 20 is preferably 10 degrees to 70 degrees. The smaller the inclination angle θ, the smoother the air flow, so that the suction effect is increased. However, if it is less than 10 degrees, the air flow becomes too smooth and the negative pressure decreases. On the other hand, if the inclination angle θ is greater than 70 degrees, a negative pressure is hardly generated, so that the suction effect is not exhibited.
The first chamfered portion 20 is not limited to an inclined surface, and may be an arcuate curved surface as shown in FIG. 7 (1), or a stepped surface as shown in FIG. 7 (2). It may be a shape.

（実施の形態３）
図８は実施の形態３に係る面削工具装置における工具本体の貫通穴付近の断面図である。本実施の形態３では、貫通穴１３には、第１の面取り部２０に加えて、貫通穴１３の回転方向Ｒの前方側の周縁部に、上面側から下面側に向かうに連れて回転方向Ｒの前方側に拡開するような傾斜面とされた第２の面取り部２１が形成されている。このような第２の面取り部２１を形成することにより、実施の形態２よりもさらに切屑等の粉塵を効率良く排除することができる。なぜなら、第２の面取り部２１に案内されて、工具本体３の下面側から貫通穴１３内に空気が円滑に流れ込むからである。
なお、第１の面取り部２０は、図６に示す形状に限らず、図７（１）又は図７（２）に示す形状のものであってもよい。 (Embodiment 3)
FIG. 8 is a cross-sectional view of the vicinity of the through hole of the tool body in the surface cutting tool device according to the third embodiment. In the third embodiment, in addition to the first chamfered portion 20, the through hole 13 has a peripheral direction on the front side in the rotational direction R of the through hole 13, and the rotational direction from the upper surface side toward the lower surface side. A second chamfered portion 21 having an inclined surface that expands to the front side of R is formed. By forming such a second chamfered portion 21, dust such as chips can be more efficiently removed than in the second embodiment. This is because the air smoothly flows into the through hole 13 from the lower surface side of the tool main body 3 by being guided by the second chamfered portion 21.
The first chamfered portion 20 is not limited to the shape shown in FIG. 6, and may have a shape shown in FIG. 7 (1) or FIG. 7 (2).

（その他の事項）
上記実施の形態１〜３では、集塵ダクト１１は側部カバー部４ａに接続されていたが、図９の従来例のように、工具本体３の上方を覆う上カバー部４ｂ（従来例のカバー１０２における工具本体上面側の部分に相当）に集塵ダクト１１を接続するようにしてもよい。このように構成しても、工具本体３に貫通穴１３を形成したり、面取り部２０、２１を形成したりすることにより、従来例よりも切屑等の粉塵を効率良く排除することが可能となる。 (Other matters)
In the first to third embodiments, the dust collection duct 11 is connected to the side cover portion 4a. However, as in the conventional example of FIG. 9, the upper cover portion 4b (in the conventional example) that covers the upper side of the tool body 3 is used. The dust collection duct 11 may be connected to a portion of the cover 102 corresponding to the upper surface side of the tool body. Even if comprised in this way, by forming the through-hole 13 in the tool main body 3, or forming the chamfered parts 20 and 21, it is possible to efficiently remove dust such as chips as compared with the conventional example. Become.

また、工具本体３周辺が、側部カバー部４ａにより密閉された状態に近い形で覆われている場合には、例えば第１の面取り部２０及び第２の面取り部２１の少なくとも一方を上記実施の形態と回転方向に対して逆方向に設けて、下面側に流れる気流を発生させることで粉塵を吹き飛ばすようにすることも可能である。   Moreover, when the tool main body 3 periphery is covered in the form close | similar to the state sealed by the side part cover part 4a, for example, at least one of the 1st chamfer part 20 and the 2nd chamfer part 21 is implemented. It is also possible to blow away dust by providing an airflow that flows on the lower surface side in a direction opposite to the direction of rotation and the direction of rotation.

以下、実施例により本発明をより具体的に説明する。なお、本発明は以下の実施例によって何ら限定されるものではない。   Hereinafter, the present invention will be described more specifically with reference to examples. In addition, this invention is not limited at all by the following examples.

実施の形態１の面削工具装置（工具本体３に貫通穴１３が形成されている構成：以下、実施例１と称する）と、実施の形態２の面削工具装置（工具本体３に貫通穴１３及び第１の面取り部２０が形成されている構成：以下、実施例２と称する）と、貫通穴１３のない工具本体３を使用した面削工具装置（以下、比較例と称する）とを用いて、以下の条件で被加工物の表面の切削を行い、切削後の被加工物の状態を調べた。   The facing tool device of the first embodiment (configuration in which the through hole 13 is formed in the tool body 3; hereinafter referred to as Example 1) and the facing tool device of the second embodiment (the through hole in the tool body 3). 13 and the configuration in which the first chamfered portion 20 is formed (hereinafter referred to as Example 2) and a chamfering tool device (hereinafter referred to as a comparative example) using the tool body 3 without the through hole 13. The surface of the workpiece was cut under the following conditions, and the state of the workpiece after cutting was examined.

［条件］
回転速度：１０３０ｒｐｍ
被加工物の材質：黒鉛部材
被加工物の大きさ：縦２３０ｍｍ、横１９８ｍｍ [conditions]
Rotation speed: 1030rpm
Workpiece material: Graphite member Workpiece size: 230mm long, 198mm wide

（実験結果）
実施例１では、黒鉛部材表面を布で拭いたら布がやや黒くなった。従って、黒鉛部材表面に粉塵が少々残っていたと認められる。
実施例２では、黒鉛部材表面を布で拭いても殆ど布は黒くならなかった。従って、黒鉛部材表面に粉塵が殆ど残らなかったと認められる。
比較例では、黒鉛部材表面を布で拭いたら布が真っ黒になった。従って、黒鉛部材表面に粉塵が多数残っていたと認められる。 (Experimental result)
In Example 1, when the surface of the graphite member was wiped with a cloth, the cloth became slightly black. Therefore, it is recognized that a little dust remained on the surface of the graphite member.
In Example 2, even when the surface of the graphite member was wiped with a cloth, the cloth hardly turned black. Therefore, it is recognized that almost no dust remained on the surface of the graphite member.
In the comparative example, when the surface of the graphite member was wiped with a cloth, the cloth turned black. Therefore, it is recognized that many dust remained on the surface of the graphite member.

（実験結果の検討）
実施例１及び実施例２共に、切屑等の粉塵を効率良く排除できたことが理解される。特に、実施例２では黒鉛部材表面を布で拭いても殆ど布は黒くならなかったことから、第１の面取り部２０を形成することが、粉塵の排除に極めて効果的であることが理解される。 (Examination of experimental results)
It is understood that both Example 1 and Example 2 were able to efficiently remove dust such as chips. In particular, in Example 2, it was understood that forming the first chamfered portion 20 is extremely effective in eliminating dust because the cloth was hardly blackened even when the surface of the graphite member was wiped with the cloth. The

本発明は、工作機械に使用される面削工具装置に適用することができる。   The present invention can be applied to a chamfering tool device used in a machine tool.

１：面削工具装置 ２：切削刃
３：工具本体 ４：カバー
４ａ：側部カバー部 ４ｂ：上カバー部
６：工作機械の回転主軸 １０：被加工物
１１：集塵ダクト １３：貫通穴
２０：第１の面取り部 ２１：第２の面取り部
Ｒ：回転方向 θ：傾斜面の傾斜角度 1: Surface cutting tool device 2: Cutting blade 3: Tool body 4: Cover 4a: Side cover portion 4b: Upper cover portion 6: Rotating spindle of machine tool 10: Workpiece 11: Dust collection duct 13: Through hole 20 : First chamfer 21: Second chamfer R: Direction of rotation θ: Inclination angle of the inclined surface

Claims (6)

工作機械の回転主軸が取り付けられ、下面に切削刃を備えた工具本体と、
工具本体の側方を覆う側部カバー部と工具本体の上方を覆う上カバー部とを備えたカバーと、
カバーに接続され、切削時に発生した切屑等の粉塵を吸引する集塵ダクトと、
を備え、前記回転主軸の回転により工具本体を回転主軸の軸線まわりに回転させて、前記切削刃により被加工物の表面を切削加工する面削工具装置であって、
前記工具本体には貫通穴が形成されており、
前記集塵ダクトは前記カバーの上カバー部に接続されており、
前記貫通穴における前記工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて前記回転方向の後方側に拡開する第１の面取り部が形成されていることを特徴とする面削工具装置。 A tool body with a rotating spindle of a machine tool and a cutting blade on the lower surface;
A cover provided with a side cover portion covering the side of the tool body and an upper cover portion covering the upper side of the tool body;
A dust collection duct that is connected to the cover and sucks dust such as chips generated during cutting;
A surface cutting tool device that rotates the tool main body around the axis of the rotation spindle by the rotation of the rotation spindle and cuts the surface of the workpiece with the cutting blade,
A through hole is formed in the tool body ,
The dust collection duct is connected to the upper cover of the cover;
A first chamfered portion that expands toward the rear side in the rotation direction from the lower surface side toward the upper surface side is formed at the peripheral edge portion on the rear side in the rotation direction of the tool body in the through hole. A characteristic chamfering tool device. 工作機械の回転主軸が取り付けられ、下面に切削刃を備えた工具本体と、
工具本体の側方を覆う側部カバー部と工具本体の上方を覆う上カバー部とを備えたカバーと、
カバーに接続され、切削時に発生した切屑等の粉塵を吸引する集塵ダクトと、
を備え、前記回転主軸の回転により工具本体を回転主軸の軸線まわりに回転させて、前記切削刃により被加工物の表面を切削加工する面削工具装置であって、
前記工具本体には貫通穴が形成されており、
前記集塵ダクトは前記カバーの側部カバー部に接続されており、該集塵ダクトの吸引口が工具本体と上カバー部との間の空間に臨んでおり、
前記貫通穴における前記工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて前記回転方向の後方側に拡開する第１の面取り部が形成されていることを特徴とする面削工具装置。 A tool body with a rotating spindle of a machine tool and a cutting blade on the lower surface;
A cover provided with a side cover portion covering the side of the tool body and an upper cover portion covering the upper side of the tool body;
A dust collection duct that is connected to the cover and sucks dust such as chips generated during cutting;
A surface cutting tool device that rotates the tool main body around the axis of the rotation spindle by the rotation of the rotation spindle and cuts the surface of the workpiece with the cutting blade,
A through hole is formed in the tool body,
The dust collection duct is connected to a side cover portion of the cover, and the suction port of the dust collection duct faces a space between the tool body and the upper cover portion,
A first chamfered portion that expands toward the rear side in the rotation direction from the lower surface side toward the upper surface side is formed at the peripheral edge portion on the rear side in the rotation direction of the tool body in the through hole. A characteristic chamfering tool device. 工作機械の回転主軸が取り付けられ、下面に切削刃を備えた工具本体と、
工具本体の側方を覆う側部カバー部と工具本体の上方を覆う上カバー部とを備えたカバーと、
カバーに接続され、切削時に発生した切屑等の粉塵を吸引する集塵ダクトと、
を備え、前記回転主軸の回転により工具本体を回転主軸の軸線まわりに回転させて、前記切削刃により被加工物の表面を切削加工する面削工具装置であって、
前記工具本体には貫通穴が形成されており、
前記工具本体は円盤状であり、前記貫通穴は工具本体の周方向に等間隔をあけて複数個形成されており、
前記貫通穴における前記工具本体の回転方向後方側の周縁部には、下面側から上面側に向かうに連れて前記回転方向の後方側に拡開する第１の面取り部が形成されていることを特徴とする面削工具装置。 A tool body with a rotating spindle of a machine tool and a cutting blade on the lower surface;
A cover provided with a side cover portion covering the side of the tool body and an upper cover portion covering the upper side of the tool body;
A dust collection duct that is connected to the cover and sucks dust such as chips generated during cutting;
A surface cutting tool device that rotates the tool main body around the axis of the rotation spindle by the rotation of the rotation spindle and cuts the surface of the workpiece with the cutting blade,
A through hole is formed in the tool body,
The tool body is disk-shaped, and a plurality of the through holes are formed at equal intervals in the circumferential direction of the tool body,
A first chamfered portion that expands toward the rear side in the rotation direction from the lower surface side toward the upper surface side is formed at the peripheral edge portion on the rear side in the rotation direction of the tool body in the through hole. A characteristic chamfering tool device. 前記第１の面取り部は傾斜面とされている請求項１〜３のいずれかに記載の面削工具装置。 The chamfering tool device according to claim 1, wherein the first chamfered portion is an inclined surface . 前記傾斜面の傾斜角度が１０度〜７０度の範囲である請求項４記載の面削工具装置。 The facing tool device according to claim 4, wherein an inclination angle of the inclined surface is in a range of 10 degrees to 70 degrees . 前記貫通穴における前記工具本体の回転方向前方側の周縁部には、上面側から下面側に向かうに連れて回転方向の前方側に拡開するような傾斜面とされた第２の面取り部が形成されている請求項１〜５のいずれかに記載の面削工具装置。 A second chamfered portion that has an inclined surface that expands toward the front side in the rotational direction from the upper surface side toward the lower surface side at the peripheral edge portion in the rotational direction front side of the tool body in the through hole. The facing tool device according to any one of claims 1 to 5, which is formed .
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