JPH03281114A - Milling tool - Google Patents
Milling toolInfo
- Publication number
- JPH03281114A JPH03281114A JP2080159A JP8015990A JPH03281114A JP H03281114 A JPH03281114 A JP H03281114A JP 2080159 A JP2080159 A JP 2080159A JP 8015990 A JP8015990 A JP 8015990A JP H03281114 A JPH03281114 A JP H03281114A
- Authority
- JP
- Japan
- Prior art keywords
- tool
- cover
- tool body
- chip
- tip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 238000003801 milling Methods 0.000 title claims abstract description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 32
- 238000003860 storage Methods 0.000 claims abstract description 17
- 230000007246 mechanism Effects 0.000 claims description 6
- 230000002093 peripheral effect Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 abstract description 5
- 230000008569 process Effects 0.000 abstract description 5
- 238000009434 installation Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 2
- 238000003754 machining Methods 0.000 description 8
- 230000000452 restraining effect Effects 0.000 description 5
- 230000008901 benefit Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000004904 shortening Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 230000001771 impaired effect Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q11/00—Accessories fitted to machine tools for keeping tools or parts of the machine in good working condition or for cooling work; Safety devices specially combined with or arranged in, or specially adapted for use in connection with, machine tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Auxiliary Devices For Machine Tools (AREA)
- Milling Processes (AREA)
Abstract
Description
【発明の詳細な説明】
[産業上の利用分野]
この発明は、切削に伴って生成される切屑を逐次処理で
きる転削工具に係り、特にマシニングセンタなどの自動
工具交換装置を備えた工作機械に用いて好適な転削工具
に関する。[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a milling tool that can sequentially process chips generated during cutting, and is particularly applicable to machine tools equipped with an automatic tool changer such as a machining center. The present invention relates to a milling tool suitable for use.
[従来の技術]
被削材の平面加工に用いられる転削工具の一例として、
従来より、第6図ないし第8図に示す正面フライスが知
られている。[Prior art] As an example of a milling tool used for planar machining of a workpiece,
BACKGROUND OF THE INVENTION Conventionally, face milling cutters shown in FIGS. 6 to 8 have been known.
これらの図に示すように、この正面フライスは、略円筒
状をな−4′カツタ本体1の先端外周部に、該カッタ本
体1の先端面及び外周面に向()て開L」する凹溝2が
周方向等間隔に複数形成され、これら凹1M12内に、
スローアウェイデツプ(以下、デツプと略称4−ろ。)
3が、クランブネ)4で締め込まれろ楔部材5によって
着脱口rトにAJ、=i″i−される・方で、各デツプ
3のすくい面3aと向かい合うカッタ本体Iの外周面に
、壁面円弧状をなすチツブボケツl−6が形成され、さ
らにカッタ本体1の中心に該カッタ本体1を軸線方向に
貫く中心孔7か彩成されてなるものである1、
このように構成された正面フライスは、機械本体の主軸
8にキー9を介;2て取り付けられたアーバlOの嵌合
軸IIに中心孔7が嵌合された−1−で締(:Iけボル
ト12により締結されて」二軸8と一体化される。そ;
7てこの状態で、カッタ本体lが主軸8に、+i−=)
で軸線回りに回転lしめられると共に軸線と直交する方
向に送られて、チップ3の切刃13か被削材を平面加圧
してゆくようになっており、このとき生成される切屑は
、すくい面3aからデツプポケット6の壁面に誘導され
て丸め込まれた上でカッタ本体1の周方向外方へ排出さ
れろ。As shown in these figures, this face milling cutter has a substantially cylindrical shape and has a recess (L) on the outer circumference of the tip of the cutter body 1 that opens toward the tip surface and the outer circumference of the cutter body 1. A plurality of grooves 2 are formed at equal intervals in the circumferential direction, and within these recesses 1M12,
Throwaway depth (hereinafter referred to as depth)
3 is tightened by the clamp screw 4 and inserted into the attachment/detachment opening r by the wedge member 5, and a wall surface is attached to the outer peripheral surface of the cutter body I facing the rake surface 3a of each depth 3. A face milling cutter having a circular arc shape is formed, and a center hole 7 is formed in the center of the cutter body 1, passing through the cutter body 1 in the axial direction. The center hole 7 is fitted to the fitting shaft II of the arbor lO, which is attached to the main shaft 8 of the machine body through the key 9. It is integrated with the two shafts 8.
7 In the levered state, the cutter body l is attached to the main shaft 8, +i-=)
The cutting edge 13 of the insert 3 is rotated around the axis and sent in a direction perpendicular to the axis, so that the cutting edge 13 of the insert 3 applies plane pressure to the workpiece, and the chips generated at this time are It is guided from the surface 3a to the wall surface of the depth pocket 6, rolled up, and then discharged outward in the circumferential direction of the cutter body 1.
[発明が解決しようとする課題]
ところて、1−述した従来の正面フライスは、生成さノ
する切屑を弔にその周方向外方・\誘導排出−4′るの
みであるため、カッタ本体1の回転に伴−・て切屑が機
械周囲へと広く飛散し2、この結果作業環境か悪化し、
また、切削終了後の切屑処理にも(11当の時間を要す
るという欠点があった。[Problems to be Solved by the Invention] However, since the conventional face milling cutter mentioned above only discharges the generated chips outward in the circumferential direction, the cutter body As 1 rotates, chips are scattered widely around the machine 2, resulting in a poor working environment.
In addition, there was a drawback that it took 11 hours to dispose of chips after cutting.
また、切削を継続するにつれて切屑が被削材や機械のテ
ーブル等に徐々に堆積してゆくため、これら切屑の熱に
よって被削材や機械に熱変形が生じて加工精度が劣化(
またり、あるいは切刃13に切屑が噛み込まれて切削面
の品位が損なわれる欠点らあ−た。さらに、機械の周囲
に飛散1.た切屑が機械の摺動面等に入り込んで、機械
自身の精度劣化や寿命低下を招くおそれもあった。In addition, as cutting continues, chips gradually accumulate on the workpiece and the machine table, so the heat from these chips causes thermal deformation of the workpiece and machine, reducing machining accuracy (
There is also a drawback that the quality of the cut surface is deteriorated due to straggling or chips getting caught in the cutting edge 13. In addition, scattering around the machine 1. There was also the risk that the chips could get into the sliding surfaces of the machine, leading to deterioration in the accuracy and shortened lifespan of the machine itself.
かかる欠点は、特に長時間の無人運転が要求されろマシ
ニンクセンタにおいてより顕杼に発生し、その解決か強
く要請されていた。Such drawbacks occur more clearly in machining centers that require unmanned operation for long periods of time, and there has been a strong demand for a solution to this problem.
この発明は、このような背景のFになされたしので、切
削に伴って生成される切屑を機械周囲に広く飛散させる
ことなく集中処理4−ることかでき、かつ自動工具交換
装置を備えた工作機械にも支障なく使用できる転削工具
を提供−4゛ろことを[」的と一4゛ろ。This invention was made against such a background, and is capable of centrally processing chips generated during cutting without scattering them widely around the machine, and is equipped with an automatic tool changer. We provide milling tools that can be used without any problems with machine tools.
1課題を解決するための手段]
上記課題を解決するために、この発明の転削工(↓は、
に具本体に、該工具本体を覆いか一〕工具先端側に開[
二1するカバーを」−具軸線回りに回転弓能な状態で装
着し、ごのカバーに、該カバーの内周面とl−具本体と
の間に画成される切屑収納室とカバー外部とを連通オろ
排出口を形成し1、上記■具本体の上記切屑収納室に臨
む外周面に、該−1−具本体の回転に伴って工具先端側
の空気を工具基端側へと吸引上る羽根を彩成し、上記カ
バーに、l二足T(j、本体が14記主軸へ装着される
際に上記工作機械のl−軸頭と係合して該カバーを工具
本体の回転にχ↑しで拘小し、かつ、−1−記■二具本
体か上記主軸から取ζ)1さ(する際に該工具本体と係
合して上記カバーの工具本体に対ずろ回転を拘束するカ
バー拘束機構を配設したちのである。1. Means for Solving the Problems] In order to solve the above problems, the milling machine of the present invention (↓ is
Cover the tool body or open it to the tool tip side.
21 A cover is attached to the cover so as to be rotatable about the axis of the tool, and a chip storage chamber defined between the inner circumferential surface of the cover and the tool body and the outside of the cover are attached. 1. On the outer peripheral surface of the tool body facing the chip storage chamber, the air from the tip side of the tool is directed toward the proximal end of the tool as the tool body rotates. The suction ascending blade is attached to the cover, and when the main body is attached to the 14 main spindle, the cover engages with the l-axis head of the machine tool and rotates the tool body. is constrained by χ↑, and when the tool body is removed from the main shaft, the cover engages with the tool body and causes the cover to rotate relative to the tool body. It is equipped with a cover restraining mechanism.
この場合、切屑をより一層確実に回収するには、工具本
体の先端部に、切刃チップの4゛<い面と隙間が空いた
状態て対向して上記カバーの工具先端側の開11部を狭
める切屑案内部材を設:づろことか好ましい。In this case, in order to collect the chips even more reliably, the opening 11 on the tool tip side of the cover should be placed opposite the tip of the tool body with a 4" wide surface of the cutting blade tip with a gap left. It is preferable to install a chip guide member that narrows the gap.
「作用 ]
上記構成の転削に具にあっては、■=具本体の回転に伴
って羽根が回転する二とにより、工具先端側の空気が仄
端側へと吸引されるので、工具周囲の空気がカバーの開
口部から内部へと吸引され、これに伴って切刃チップで
生成される切屑が逐次切屑収納室に吸引さイする。この
ため、カバーの排出口から切屑を集中的に回収すること
かで八る。[Function] In the case of the milling tool having the above configuration, air from the tool tip side is sucked toward the far end side due to the rotation of the blades as the tool body rotates, so that the air around the tool is Air is sucked into the interior through the opening of the cover, and the chips generated by the cutting blade tip are sequentially sucked into the chip storage chamber.For this reason, the chips are concentrated from the outlet of the cover. It depends on collecting it.
また、工具本体の主軸−・の装着時にカバーが主軸頭側
と係合することにより、−]二貝本体が回転してしカバ
ー(」所定位置に保持される。その−・方、工具本体が
1:、軸から取り外さ第1る際には、カバーと工Lj9
本体とか係合してカバーの工具本体に対する回転が拘束
されるので、マシニングセンタ等で自動工具交換を行う
際にカバーが回転して工具交換動作を損なう等の弊害が
生じることもなく、工具交換を行う毎に排出口の周方向
の位置が変化することもない。In addition, when the main shaft of the tool body is attached, the cover engages with the head of the main shaft, so that the main body rotates and the cover () is held in a predetermined position. 1: When removing from the shaft, remove the cover and machine Lj9.
Since it engages with the main body and restricts the rotation of the cover relative to the tool body, the cover does not rotate when automatically changing tools at a machining center, etc., thereby preventing problems such as impairing the tool changing operation. The position of the discharge port in the circumferential direction does not change each time it is performed.
さらに、切屑案内部材を設けることにより、カバーの開
口面積が減少するので、工具先端部に生じる吸引力が増
大するとともに、切刃チップのすくい面に沿って生成さ
れる切屑が切屑案内部材とすくい面との間の隙間に沿っ
て強制的に切屑収納室側へと案内される。Furthermore, by providing the chip guide member, the opening area of the cover is reduced, so the suction force generated at the tip of the tool increases, and chips generated along the rake face of the cutting edge are transferred between the chip guide member and the rake. The chips are forcibly guided toward the chip storage chamber along the gap between the chips and the surface.
[実施例]
以下、第1図ないし第4図を参照して、本発明の一実施
例を説明する。[Embodiment] An embodiment of the present invention will be described below with reference to FIGS. 1 to 4.
これらの図において符号20は工具本体である。In these figures, the reference numeral 20 is the tool body.
第1図ないし第3図に示すように、工具本体20は、そ
の先端外周部に複数のチップ(切刃チップ)21が装着
される一方で、その基端側にアーμ22が嵌装されてポ
ルト23で同軸的に連結されてなるものである。As shown in FIGS. 1 to 3, the tool body 20 has a plurality of tips (cutting tips) 21 attached to the outer periphery of its tip, and an arm μ 22 fitted to its base end. They are coaxially connected through port 23.
ここで、上記デツプ2Iは超硬合金を正方形平板状に成
形してなるもので、工具本体外周部の凹溝24に挿入さ
れた楔部材25によって押圧されて工具本体20に着脱
自在に装着されている。そして、各チップ21の切刃2
6・はそれぞれ工具外周及び先端から僅かに突出せしめ
られている。Here, the depth 2I is formed by molding cemented carbide into a square flat plate shape, and is pressed by a wedge member 25 inserted into a groove 24 on the outer periphery of the tool body, and is detachably attached to the tool body 20. ing. Then, the cutting edge 2 of each chip 21
6 are slightly protruded from the outer periphery and tip of the tool, respectively.
一方、上記アーμ22は、当該工具本体20を工作機械
の主軸頭Hに支持された主軸Sと連結するためのもので
、そのテーパンヤンク27が主軸Sと嵌合された状態で
プルスタッド28が主軸後端側(第1図において」一方
)へ引き込まれることにより主軸Sに装着される。そし
て、このアーμ22にはキー溝29が形成され、これら
キー溝29が上記プルスタッド28の引き込み動作に伴
って主軸Sのキー30と係合することにより、主軸Sの
回転が工具本体20に伝達されるようになっている。On the other hand, the arm μ 22 is for connecting the tool body 20 to the spindle S supported by the spindle head H of the machine tool, and when the taper yank 27 is fitted to the spindle S, the pull stud 28 is connected to the spindle S. It is attached to the main shaft S by being pulled toward the rear end side (one side in FIG. 1). Key grooves 29 are formed in this arm μ 22, and these key grooves 29 engage with the keys 30 of the main spindle S as the pull stud 28 pulls in, so that the rotation of the main spindle S is directed to the tool body 20. It is meant to be transmitted.
また、アーμ22には、工作機械に設けられた自動工具
交換装置の工具交換アーム(図示路)と係合されるグリ
ップ31が形成されている。このグリップ31よりも工
具先端側には、ラジアルベアリング32が嵌装され、そ
の内輪側はナツト33で軸方向に締め付けられている。Further, the arm μ 22 is formed with a grip 31 that is engaged with a tool changing arm (path shown) of an automatic tool changing device provided on the machine tool. A radial bearing 32 is fitted on the tool tip side with respect to the grip 31, and the inner ring side of the radial bearing 32 is tightened in the axial direction with a nut 33.
そして、ラジアルベアリング32の外輪側にはカバー3
4が嵌装されている。このカバー34は、その基端側か
上記ラジアルベアリング32の外輪に嵌合されたキャッ
プ35とポルト35+1で連結され、これによりカバー
34は、その軸方向の移動が拘束されて工具本体20に
回転自在に支持されている。A cover 3 is placed on the outer ring side of the radial bearing 32.
4 is fitted. This cover 34 is connected at its base end to a cap 35 fitted to the outer ring of the radial bearing 32 through a port 35+1, whereby the cover 34 is restrained from moving in the axial direction and rotated by the tool body 20. freely supported.
カバー34の先端部は、工具先端に向かって開口する円
筒状に形成され、その先端とチップ21のコーナ部との
間の距離121は、工具外周側を向く切刃26の切込み
深さよりも幾らか大きく定められている。また、カバー
34の先端部の内径は、上記切刃26の回転径よりも僅
かに大きく定められている。このカバー34の内周面と
上記切刃26との間の径方向隙間量δは、被削材の材質
や切削条件等に応じて適宜定められるが、0.5mm〜
2mmの範囲内に定めることが望ましく、より確実な切
屑処理を行うには0.5mm〜1mmの範囲内に設定す
ることが望ましい。隙間量δが0.5mmに満たないと
、カバー34の偏芯等によって切刃26が食い込むおそ
れがあり、他方、隙間量δが2mmを超えると後述する
切屑吸引ツノが低下して切屑処理に支障を来すおそれが
生じるからである。The tip of the cover 34 is formed into a cylindrical shape that opens toward the tool tip, and the distance 121 between the tip and the corner of the tip 21 is somewhat larger than the cutting depth of the cutting edge 26 facing toward the outer circumferential side of the tool. It is largely determined. Further, the inner diameter of the tip of the cover 34 is set to be slightly larger than the rotational diameter of the cutting blade 26. The radial clearance amount δ between the inner circumferential surface of the cover 34 and the cutting edge 26 is determined as appropriate depending on the material of the workpiece, cutting conditions, etc., but is between 0.5 mm and
It is desirable to set it within the range of 2 mm, and for more reliable chip disposal, it is desirable to set it within the range of 0.5 mm to 1 mm. If the gap amount δ is less than 0.5 mm, there is a risk that the cutting blade 26 may dig in due to the eccentricity of the cover 34, etc. On the other hand, if the gap amount δ exceeds 2 mm, the chip suction horn described later will be reduced, making it difficult to dispose of chips. This is because there is a risk that problems may occur.
また、カバー34の外周部には、当該カバー34の内周
面と工具本体20の外周面との間に画成される切屑収納
室36と、カバー34の外部とを連通ずる円形の排出口
37が形成されている。そして、この排出口37に中空
状をなす排出管39が嵌装されている。また、カバー3
4の内周面の上部には、切屑収納室36とラジアルベア
リング30とを隔離する隔壁40が形成されている。Further, in the outer circumferential portion of the cover 34, a circular discharge port is provided that communicates the outside of the cover 34 with a chip storage chamber 36 defined between the inner circumferential surface of the cover 34 and the outer circumferential surface of the tool body 20. 37 is formed. A hollow discharge pipe 39 is fitted into the discharge port 37. Also, cover 3
A partition wall 40 is formed at the upper part of the inner circumferential surface of 4 to separate the chip storage chamber 36 and the radial bearing 30.
第2図及び第3図により詳細に示すように、工具本体2
0の先端の各チップすくい面21aと対向する位置には
、平板状の切屑案内部材41が配設されている。これら
切屑案内部材41は、工具本体20の取付座42に嵌め
込まれてポルト43で固定され、その表面は工具本体2
0の先端面と略面−七されている。As shown in more detail in FIGS. 2 and 3, the tool body 2
A flat chip guide member 41 is disposed at a position facing each chip rake face 21a at the tip of the chip. These chip guide members 41 are fitted into the mounting seats 42 of the tool body 20 and fixed with ports 43, and their surfaces are attached to the tool body 20.
The tip surface of 0 and the approximate surface of -7.
これら切屑案内部材41の外周側は、1−具本体20に
JF、+成されたチップポケット44をほぼ閉塞する■
ニ状に形成されている。そして、各切屑案内部材41の
上記4−<い面2+aと対向する端面45と−A”くい
而213との間には、切刃26で生成されろ切屑を切屑
収納室36側へ案内とる所定の隙17J] rか設置1
られている3、この隙間tの大きさは、被削(4の材質
や切削条件等に応じて適宜設定されるが、なるべくは0
.5mm〜2.Ommの範囲に定めることが好ましい3
、隙間量1が0.5mmに満たないと切屑の詰まりが生
じるおそれがあり、他方、隙間量tが2.Ommを超え
ると切屑吸引力が低下して切屑処理能力が損なイ・)れ
るおそれが生じるからである。さらに、切屑案内部材4
1の裏面には、l−記端面45からチツプボケツ)・4
4の壁面に向かって延びろ溝部46が形成され、−1−
2隙間tを通過1゛る切屑の詰まりを防止して、切屑を
滞りなくチップポケット44に排出させる配慮がなされ
ている。The outer peripheral side of these chip guide members 41 almost closes the chip pocket 44 formed in the tool main body 20.
It is formed into a d-shape. And, between the end face 45 of each chip guide member 41 that faces the above-mentioned 4-< cut surface 2+a and the -A'' joint 213, chips generated by the cutting blade 26 are guided to the chip storage chamber 36 side. Predetermined gap 17J] r or installation 1
3. The size of this gap t is set appropriately depending on the material of the workpiece (4), cutting conditions, etc., but it is preferably 0.
.. 5mm~2. It is preferable to set it in the range of Omm3
If the gap amount 1 is less than 0.5 mm, clogging of chips may occur.On the other hand, if the gap amount t is less than 2. This is because if it exceeds Omm, the chip suction force will decrease and there is a risk that the chip disposal ability will be impaired. Furthermore, the chip guide member 4
On the back side of 1, there are chip marks from the end surface 45 marked 1).
A groove portion 46 is formed extending toward the wall surface of -1-
Consideration has been made to prevent chips passing through the gap t from clogging and to discharge the chips smoothly into the chip pocket 44.
1
また、第1図及び第3図に示すように、上記工具本体2
0の外周面には複数の羽根50が形成さイ1ている。こ
11ら羽根50(J、工具本体20の外周部を周方向に
所定の間隔て削り込むことによって形成されてなるもの
で、その形状は、工具先端側から基端側に向か一″)に
従−)で漸次工具回転方向後方側へ傾斜゛4゛るように
定められている。1 Also, as shown in FIGS. 1 and 3, the tool body 2
A plurality of blades 50 are formed on the outer peripheral surface of the blade. These 11 and 11 vanes 50 (J, which are formed by cutting the outer circumference of the tool body 20 at predetermined intervals in the circumferential direction, and the shape is 1" from the tool tip side to the base end side) It is determined that the angle is gradually inclined backward in the direction of rotation of the tool.
第1図に示すように、上記カバー34の基端側は先端部
の側方へ膨らむ楕円形状に形成され、この楕円形状の突
出部51に(Jカバー拘束機構52が設(1らイ1てい
る。As shown in FIG. 1, the proximal end of the cover 34 is formed in an elliptical shape that bulges out to the side of the distal end, and a J cover restraining mechanism 52 is provided on this elliptical protrusion 51. ing.
このカバー拘束機構52は、l−記カバー34の回転を
拘束−A”るためのらので、上記突出部51の案内穴5
3に摺動自在に挿入された係合軸54と、この係合軸5
4を工具軸線方向基端側に付勢オる二]イルばね55と
、係合軸54から工具径方向中心側へ延びるストッパ5
6とから概略構成されている。This cover restraining mechanism 52 is for restraining the rotation of the cover 34, so the guide hole 52 of the protrusion 51 is
3 and the engagement shaft 54 slidably inserted into the engagement shaft 5.
4 toward the proximal end side in the tool axis direction, and a stopper 5 extending from the engagement shaft 54 toward the center side in the tool radial direction.
It is roughly composed of 6.
ここで、−1−2係合軸54は、そのキー溝54 aか
上記突出部51に螺合されたねじ57の先端と2
係合してその回転が拘束されている。また、係合軸54
の先端は、1−記アーバ22が主軸Sに嵌装された状態
において、]二作機械の主軸頭■]に取り付(1られた
係合ブロック58の係合穴59と嵌合して、カバー34
の回転を拘束できるようになっている。また、第1図及
び第4図に示すように、−1−記ストソバ56は、その
先端か、アーム22に形成された係合溝60に達する位
置まで延長され、上記係合軸54の軸線方向への移動に
伴って係合’II青60から出没できるよう(こなって
いる。Here, the -1-2 engagement shaft 54 is restrained from rotating by engaging with its keyway 54a or with the tip of the screw 57 screwed into the protrusion 51. In addition, the engagement shaft 54
When the arbor 22 is fitted onto the main shaft S, the tip of the arbor 22 is fitted into the engagement hole 59 of the engagement block 58 attached to the main shaft head (■) of the machine. , cover 34
The rotation of can be restricted. Further, as shown in FIGS. 1 and 4, the stop bar 56 marked -1- is extended to a position where its tip reaches the engagement groove 60 formed in the arm 22, and the axis of the engagement shaft 54 is extended. It is designed so that it can appear and disappear from the engagement 'II blue 60 as it moves in the direction.
次に、以−1−のように構成された正面フライスの作用
について説明する。Next, the operation of the face milling cutter configured as below-1- will be explained.
上記構成のl[面フライスは、工作機械の自動工員交換
装置のマガジン(図示略)内に収納され、この状態から
自動工具交換装置の工具交換アームで搬送されて主軸S
に装着される。この間、係合軸54はコイルばね55に
よって工具基端側に付勢され、このため、ストッパ56
はアーム22の係合溝60ど係合する。従って、マガジ
ン収納状態及び工具交換中においては、カバー34の回
転がβ(111−され、カバー34はアーム221こ対
して周方向所定の位置に係止されろ。The surface milling cutter having the above configuration is stored in a magazine (not shown) of an automatic tool changer of a machine tool, and from this state is transported by a tool change arm of an automatic tool changer to the main spindle S.
will be installed on the During this time, the engagement shaft 54 is urged toward the proximal end of the tool by the coil spring 55, so that the stopper 56
is engaged with the engagement groove 60 of the arm 22. Therefore, in the magazine storage state and during tool exchange, the rotation of the cover 34 is β(111-), and the cover 34 is locked at a predetermined position in the circumferential direction with respect to the arm 221.
ついで、アーム22が主軸Sに装着されろことにより、
係合軸54の先端部は主軸頭1−Iに固定された係合ブ
ロック58の係合穴5つと嵌合する。Then, by attaching the arm 22 to the main shaft S,
The distal end of the engagement shaft 54 fits into five engagement holes of an engagement block 58 fixed to the spindle head 1-I.
これにより、係合軸54はコイルばね55に抗して工具
先端側に押し込まれ、この結果ストッパ56はアーム2
2の係合溝60から開放される。これにより、アーム2
2及びカバー34は互いに独立して回転可能な状態にお
かれるか、カバー34は引き続き係合軸54を介して係
合ブロック58と係合するので、その回転が拘束される
。As a result, the engagement shaft 54 is pushed toward the tool tip side against the coil spring 55, and as a result, the stopper 56 is pushed against the arm 2.
It is released from the engagement groove 60 of No. 2. As a result, arm 2
2 and the cover 34 are allowed to rotate independently of each other, or the cover 34 continues to engage with the engagement block 58 via the engagement shaft 54, so that its rotation is restrained.
アーム22が主軸Sに装着された後、工具本体20か主
軸Sによって軸線回りに回転せしめられるとともに、工
具先端と対向する被削材と主軸Sとの間に工具軸線と直
交する方向の相対運動がI与えられ、これに伴ってチッ
プ2jの切刃26が被削祠を切削してゆく。After the arm 22 is attached to the spindle S, it is rotated around the axis by the tool body 20 or the spindle S, and relative movement in a direction perpendicular to the tool axis occurs between the workpiece facing the tool tip and the spindle S. I is given, and the cutting edge 26 of the chip 2j cuts the workpiece in accordance with this.
ここで、上記切削時においては、工具本体20の1転に
伴って該工具本体20の外周に設(Iられた羽根50ら
一体に回転し、これにより工具先端側の空気が逐次工具
基端側へと吸引される。このため、カバー34先端の開
口部分からは、工具本体20の周囲の空気が切屑収納室
36内に向けて逐次吸引される。During the above-mentioned cutting, as the tool body 20 rotates once, the blades 50 provided on the outer periphery of the tool body 20 rotate together, and as a result, the air on the tool tip side is sequentially drawn from the tool base end. Therefore, air around the tool body 20 is successively sucked into the chip storage chamber 36 from the opening at the tip of the cover 34 .
一方、上記デツプ21の切刃26からずくい面21aに
沿って生成される切屑は、切屑案内部材41の端面45
とずくい面21aとの間の隙間tを通過してデツプポケ
ット44に導かれ、該チップポケット44によって丸め
込まれて分断される。On the other hand, chips generated from the cutting edge 26 of the depth 21 along the cutting face 21a are removed from the end face 45 of the chip guiding member 41.
The chip passes through the gap t between the tip and the chip surface 21a, is guided to the depth pocket 44, and is rounded and divided by the chip pocket 44.
そして、分断された切屑は、カバー34の先端開口部か
ら吸引される空気と共に切屑収納室36内に吸引される
。そして、吸引された切屑は、排出口37から排出管3
9を介してカバー34の外部へ集中的に排出される。Then, the divided chips are sucked into the chip storage chamber 36 along with the air sucked from the opening at the tip of the cover 34. Then, the sucked chips are discharged from the discharge port 37 to the discharge pipe 3.
It is intensively discharged to the outside of the cover 34 via the pipe 9.
加工が終了して工具が主軸Sから抜き取られる際には、
工具本体20は、工具交換アームとの係合のため、主軸
Sのオリエンテーション機能により主軸Sへの装着時と
周方向同一位置に位置決めされ、これに伴ってアーム2
2の係合溝60は、ストッパ56の先端と対応する位置
に位置決めされる。そして、上記工具交換アームによっ
てアーム22が主軸Sから取り外されると同時に、係合
軸54がコイルばね55によって工具軸線方向基端側へ
押し戻され、これに伴って係合溝60とストッパ56と
が再び係合する。これによりカバー34の回転は再びア
ーム22によって拘束されることとなる。このため、工
具交換時や工具を収納するマガジンを駆動する際のカバ
ー34の遊動が阻止され、工具交換を繰り返しても排出
口37及び排出管39の周方向の位置は常に一定となる
。When machining is completed and the tool is removed from the spindle S,
In order to engage the tool exchange arm, the tool body 20 is positioned at the same circumferential position by the orientation function of the spindle S as when it is attached to the spindle S, and accordingly, the arm 2
The second engagement groove 60 is positioned at a position corresponding to the tip of the stopper 56. Then, at the same time as the arm 22 is removed from the main shaft S by the tool exchange arm, the engagement shaft 54 is pushed back toward the proximal end in the tool axis direction by the coil spring 55, and as a result, the engagement groove 60 and the stopper 56 are Re-engage. As a result, the rotation of the cover 34 is again restricted by the arm 22. Therefore, the cover 34 is prevented from shifting when exchanging tools or when driving a magazine that stores tools, and the positions of the discharge port 37 and the discharge pipe 39 in the circumferential direction are always constant even if the tools are repeatedly exchanged.
従って、切屑の排出位置が常に一定することとなり、機
械側の排出管39に臨む位置に切屑収納箱等の切屑処理
手段を設けることによって、機械側で容易に切屑の集中
処理を図り得る。Therefore, the chip discharge position is always constant, and by providing a chip disposal means such as a chip storage box at a position facing the discharge pipe 39 on the machine side, it is possible to easily concentrate the chips on the machine side.
以上説明したように、本実施例の正面フライスによれば
、羽根50の回転に伴う吸引力によって、切削時に生成
される切屑が吸引されてカバ−34外部の特定位置に集
中的に排出されるので、該切屑排出位置て切屑を集中処
理して、作業環境の改善、切屑処理に要する時間の短縮
化等を図ることができる。As explained above, according to the face milling cutter of this embodiment, the chips generated during cutting are sucked by the suction force accompanying the rotation of the blades 50, and are concentratedly discharged to a specific position outside the cover 34. Therefore, it is possible to centrally process chips at the chip discharge position, thereby improving the working environment and shortening the time required for chip disposal.
さらに、切屑吸引力が工具本体20に形成された羽根5
0によって生じるものであるため、切屑を吸引するため
に吸引機等の特別の装備を機械側に設ける必要がなく、
このため装置が簡単かつ安価になるという利点がある。Furthermore, the chip suction force is applied to the blades 5 formed on the tool body 20.
0, there is no need to install special equipment such as a suction machine on the machine to suck up the chips.
This has the advantage that the device is simple and inexpensive.
加えて、本実施例の正面フライスにあっては、主軸Sか
ら取り外された状態で、カバー34がアーム22に対し
て周方向所定の位置で係止され、また、アーム22の主
軸Sへの装着に連動してカバー34とアーム22との係
合が解除される構造であるため、自動工具交換装置を備
えたマシニングセンタなどの工作機械にも同等支障なく
使用でき、マシニングセンタによる長時間無人加工を行
う場合等、生成される切屑の量が多くかつ作業者による
切屑処理が期待できない場合に顕著な効果を奏する。In addition, in the face milling cutter of this embodiment, the cover 34 is locked to the arm 22 at a predetermined position in the circumferential direction when it is removed from the main shaft S, and the cover 34 is locked to the arm 22 at a predetermined position in the circumferential direction. Since the structure is such that the engagement between the cover 34 and the arm 22 is released in conjunction with the installation, it can be used without any problems with machine tools such as machining centers equipped with automatic tool changers, and long-term unattended machining with machining centers is possible. This is particularly effective when the amount of chips generated is large and it is difficult to expect the operator to dispose of the chips.
ちなみに、カバー拘束機構52を設けない場合には、工
具交換を行う場合、あるいは工具が収納されたマガジン
を駆動する場合等においてカバー34が周方向に遊動し
て工作機械や他の工具等に干渉するおそれが生じ、また
、工具交換を行う毎に排出口37の周方向の位置が変化
して切屑の排出位置が一定しないので、切屑排出方向が
工具交換毎に変化して処理ができなくなる。Incidentally, if the cover restraining mechanism 52 is not provided, the cover 34 may move circumferentially and interfere with machine tools or other tools when exchanging tools or when driving a magazine in which tools are stored. Moreover, the position of the discharge port 37 in the circumferential direction changes every time the tool is replaced, and the chip discharge position is not constant, so the chip discharge direction changes every time the tool is replaced, making it impossible to process the chips.
なお、本実施例では特に工具本体20の先端にデツプ2
1を装着したいわゆるスローアウェイ式の正面フライス
について説明したが、本発明の転削工具はこれに限るも
のではなく、チップをロウ付けした正面フライス等、種
々の転削工具に適用できるものである。In addition, in this embodiment, a depth 2 is particularly provided at the tip of the tool body 20.
Although the so-called indexable type face milling cutter equipped with the tip 1 has been described, the milling tool of the present invention is not limited to this, and can be applied to various milling tools such as a face milling cutter with a brazed tip. .
また、本実施例では特に羽根50を工具本体20と一体
に形成しているが、本発明はこれに限るものではなく、
例えば第5図に示すように、別に製作された羽根60を
工具本体20の外周部に嵌装してボルト61で連結する
ような構成であっても良い。また、羽根50の形状につ
いても、上記実施例では特に工具先端側から基端側へ向
かうに従って漸次工具回転方向後方側へ傾斜する軸流式
の羽根状に形成しているが、本発明はこれに限るもので
はなく、例えば・L面視して渦巻き状をなす、いイつゆ
る遠心翼状の形状に形成しても同様の効果を奏すること
ができ、その他種々の変形が可能である。Further, in this embodiment, the blade 50 is particularly formed integrally with the tool body 20, but the present invention is not limited to this.
For example, as shown in FIG. 5, a separately manufactured blade 60 may be fitted onto the outer peripheral portion of the tool body 20 and connected with a bolt 61. Furthermore, the shape of the blade 50 in the above embodiment is formed into an axial flow blade shape that gradually inclines rearward in the tool rotation direction as it goes from the tool tip side to the base end side. However, the present invention is not limited to this, and for example, the same effect can be achieved even if the shape is formed into a so-called centrifugal wing shape, which is a spiral shape when viewed from the L side, and various other modifications are also possible.
さらに、本実施例では特に工具本体20の先端面に切屑
案内部1.f’41を設(することによって、カバー3
4の開口部を挾めているが、羽根5oによって十分な吸
引力が得られる場合には省略しても構わない。Furthermore, in this embodiment, a chip guide portion 1 is particularly provided on the tip surface of the tool body 20. By setting f'41, cover 3
Although the opening 4 is sandwiched between the blades 5o, it may be omitted if sufficient suction force can be obtained by the blades 5o.
[発明の効果]
以1−説明したように、この発明によれば、切削時に生
成されろ切屑を機械周囲に飛散させろこ七なく逐次吸引
して、工具周囲の特定位置に集中的に抽出できるので、
機械のりI出口に臨む位置に切屑処理手段を配設するこ
とにより、切屑を集中処理して切屑処理時間の短縮や作
業環境の大幅な改善等を図り得る。[Effects of the Invention] As explained in 1-1, according to the present invention, the chips generated during cutting can be scattered around the machine and suctioned one after another without any hesitation, thereby making it possible to extract them concentratedly at a specific location around the tool. So,
By arranging the chip processing means at a position facing the machine glue I exit, it is possible to intensively process the chips, thereby shortening the chip processing time and greatly improving the working environment.
しかも、切屑吸引力が工具本体の外周部に設けら41だ
羽根によ−)て発生する構成であるため、切9
屑の吸引のために吸引機等の特別な装置を設(Jる必要
がなく、装置が簡単で安価になるという効果をら奏する
。Moreover, since the chip suction force is generated by the blades provided on the outer periphery of the tool body, it is necessary to install a special device such as a suction machine to suck the chips. This has the advantage that the device is simple and inexpensive.
加えて、工具が工作機械の主軸から取り列された状態に
あ。では、カバーが工具本体に対して周方向所定の位置
に係止され、また工具本体を主軸に装着する際には、こ
れに連動してツノバーと工具本体との係合が解除される
と同時にカバーと工作機械とが係合してカバーが二V具
本体の回転に対(〜で所定位置に保持されるため、自動
工具交換装置を備えた工作機械にも同等支障なく使用で
き、長時間無人加工を行う場合等、特に切屑の生成量が
多くかつ作業音による切屑処理も期待できない場合に顕
著な効果を奏する。In addition, the tools are aligned from the main spindle of the machine tool. In this case, the cover is locked at a predetermined position in the circumferential direction with respect to the tool body, and when the tool body is attached to the spindle, the engagement between the horn bar and the tool body is released at the same time. The cover and the machine tool engage and the cover is held in place by the rotation of the two V tool bodies, so it can be used on machine tools equipped with an automatic tool changer without any problems and can be used for long periods of time. This is particularly effective when unmanned machining is performed, where a large amount of chips are generated and it is not possible to dispose of the chips through operation noise.
さらに、工具本体の先端に切屑案内部材を設けた場合に
は、カバーの開「1面積が減少して工具先端部に作用す
る吸引力が増大するとともに、すくい面に沿って生成さ
れる切屑か強制的に切屑収納室側へ案内されるので、切
屑をより一層確実に吸引できるという効果を奏する。Furthermore, when a chip guide member is provided at the tip of the tool body, the open area of the cover is reduced, the suction force acting on the tool tip increases, and chips generated along the rake face are Since the chips are forcibly guided to the chip storage chamber side, it is possible to more reliably suck the chips.
00
第1図ないし第4図は本発明の一実施例を示すもので、
第1図は軸方向断面図、第2図は底面図、第3図は工具
本体の側面図、第4図は第1図のIIIJこおIJる断
面図、
第5図は羽根の変形例を示す図、
第6図ないし第8図は従来の正面フライスを示すしので
、第6図は軸方向断面図、第7図は底面図、第8図は工
具本体の先端外周部の拡大図である。
20・・・・・工具本体、
21・ ・デツプ(切刃チップ)、
21a ・すくい而、26・・・切刃、34・・ カ
バー 36 ・・切屑収納室、37・・υト出口、4I
・ ・・切屑案内部材、45 ・・・切屑案内部材の端
面、
50・60 ・・・羽根、52・・カバー拘束機構、H
・ ・t′、軸頭、S・ 主軸。1 to 4 show an embodiment of the present invention,
Fig. 1 is an axial sectional view, Fig. 2 is a bottom view, Fig. 3 is a side view of the tool body, Fig. 4 is a sectional view from IIIJ to IJ of Fig. 1, and Fig. 5 is a modification of the blade. Figures 6 to 8 show conventional face milling cutters, so Figure 6 is an axial sectional view, Figure 7 is a bottom view, and Figure 8 is an enlarged view of the outer periphery of the tip of the tool body. It is. 20... Tool body, 21... Dep (cutting blade tip), 21a - Scoop, 26... Cutting blade, 34... Cover 36... Chip storage chamber, 37... υto outlet, 4I
・ ... Chip guide member, 45 ... End face of chip guide member, 50 60 ... Vane, 52 ... Cover restraint mechanism, H
・ ・t′, shaft head, S・ main shaft.
Claims (2)
部に切刃チップが装着されてなる転削工具において、 上記工具本体に、該工具本体を覆いかつ工具先端側に開
口するカバーを工具軸線回りに回転可能な状態で装着し
、 このカバーに、該カバーの内周面と工具本体との間に画
成される切屑収納室とカバー外部とを連通する排出口を
形成し、 上記工具本体の上記切屑収納室に臨む外周面に、該工具
本体の回転に伴って工具先端側の空気を工具基端側へと
吸引する羽根を形成し、 上記カバーに、上記工具本体が上記主軸へ装着される際
に上記工作機械の主軸頭と係合して該カバーを工具本体
の回転に対して拘束し、かつ、上記工具本体が上記主軸
から取り外される際に該工具本体と係合して上記カバー
の工具本体に対する回転を拘束するカバー拘束機構を配
設したことを特徴とする転削工具。(1) In a milling tool in which a cutting tip is attached to the outer periphery of the tip of a tool body that is rotated around the axis, the tool body is provided with a cover that covers the tool body and opens toward the tool tip. The cover is mounted in a rotatable state around the tool body, and the cover is formed with a discharge port that communicates a chip storage chamber defined between the inner circumferential surface of the cover and the tool body with the outside of the cover, and the tool body A vane is formed on the outer peripheral surface facing the chip storage chamber to suck air from the tool tip side toward the tool base side as the tool body rotates, and the tool body is attached to the main shaft on the cover. When the tool body is removed from the spindle, the cover engages with the spindle head of the machine tool to restrain the rotation of the tool body, and when the tool body is removed from the spindle, it engages with the tool body to prevent the cover from rotating. A milling tool characterized by being provided with a cover restraint mechanism that restrains rotation of the cover relative to the tool body.
い面と隙間が空いた状態で対向して上記カバーの工具先
端側の開口部を狭める切屑案内部材を設けたことを特徴
とする請求項1記載の転削工具。(2) A chip guide member is provided at the tip of the tool body, facing the rake surface of the cutting edge with a gap left, and narrowing the opening on the tool tip side of the cover. The milling tool according to claim 1.
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2080159A JP2822562B2 (en) | 1990-03-28 | 1990-03-28 | Milling tool |
EP19900112464 EP0407836A3 (en) | 1989-07-04 | 1990-06-29 | Rotary cutting tool |
DE69033489T DE69033489T2 (en) | 1989-07-04 | 1990-06-29 | Rotating cutting tool |
EP95104146A EP0667209B1 (en) | 1989-07-04 | 1990-06-29 | Rotary cutting tool |
US07/545,626 US5090849A (en) | 1989-07-04 | 1990-06-29 | Rotary cutting tool |
KR1019900012033A KR960010552B1 (en) | 1990-03-28 | 1990-08-06 | Device for sucking out chips of face milling cutter |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2080159A JP2822562B2 (en) | 1990-03-28 | 1990-03-28 | Milling tool |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH03281114A true JPH03281114A (en) | 1991-12-11 |
JP2822562B2 JP2822562B2 (en) | 1998-11-11 |
Family
ID=13710527
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2080159A Expired - Lifetime JP2822562B2 (en) | 1989-07-04 | 1990-03-28 | Milling tool |
Country Status (2)
Country | Link |
---|---|
JP (1) | JP2822562B2 (en) |
KR (1) | KR960010552B1 (en) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008002589A (en) * | 2006-06-23 | 2008-01-10 | Duplo Seiko Corp | Power transmission mechanism for sheet processor |
JP2010188431A (en) * | 2009-02-16 | 2010-09-02 | Toyo Tanso Kk | Surface grinding tool device |
US20130209190A1 (en) * | 2010-10-27 | 2013-08-15 | Fuji Jukogyo Kabushiki Kaisha | Cover for cutting tool, holder for cutting, and cutting device |
JP2015182162A (en) * | 2014-03-24 | 2015-10-22 | 株式会社三井ハイテック | Method and device for processing slide lower face of press machine |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170940U (en) * | 1981-04-17 | 1982-10-27 | ||
JPS6171313U (en) * | 1984-10-16 | 1986-05-15 | ||
JPH01109014A (en) * | 1987-10-19 | 1989-04-26 | Mitsubishi Metal Corp | Rotary cutting tool |
-
1990
- 1990-03-28 JP JP2080159A patent/JP2822562B2/en not_active Expired - Lifetime
- 1990-08-06 KR KR1019900012033A patent/KR960010552B1/en not_active IP Right Cessation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS57170940U (en) * | 1981-04-17 | 1982-10-27 | ||
JPS6171313U (en) * | 1984-10-16 | 1986-05-15 | ||
JPH01109014A (en) * | 1987-10-19 | 1989-04-26 | Mitsubishi Metal Corp | Rotary cutting tool |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2008002589A (en) * | 2006-06-23 | 2008-01-10 | Duplo Seiko Corp | Power transmission mechanism for sheet processor |
JP2010188431A (en) * | 2009-02-16 | 2010-09-02 | Toyo Tanso Kk | Surface grinding tool device |
US20130209190A1 (en) * | 2010-10-27 | 2013-08-15 | Fuji Jukogyo Kabushiki Kaisha | Cover for cutting tool, holder for cutting, and cutting device |
US9937598B2 (en) * | 2010-10-27 | 2018-04-10 | Subaru Corporation | Cover for cutting tool, holder for cutting, and cutting device |
JP2015182162A (en) * | 2014-03-24 | 2015-10-22 | 株式会社三井ハイテック | Method and device for processing slide lower face of press machine |
Also Published As
Publication number | Publication date |
---|---|
JP2822562B2 (en) | 1998-11-11 |
KR960010552B1 (en) | 1996-08-02 |
KR910016420A (en) | 1991-11-05 |
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