JPS6144735Y2

JPS6144735Y2 -

Info

Publication number: JPS6144735Y2
Application number: JP506483U
Authority: JP
Priority date: 1983-01-18
Filing date: 1983-01-18
Publication date: 1986-12-16
Also published as: JPS59112525U

Description

【考案の詳細な説明】本考案は切粉処理対策を施したフライス工具に
関する。[Detailed Description of the Invention] The present invention relates to a milling tool that takes measures against cutting chips.

従来第１に示す如くフライス１により刃部２の
刃長l₁よりも長い奥行l₂に平面又は円弧凹状の加
工面３を切削する場合、切粉が該加工面３とフラ
イス１のアーバ又は首部４との間に入り込んだま
ま排出されず、切粉が相互にからみ合つた状態で
団塊となつて加工面３とアーバ又は首部４との間
に堆積することが多かつた。このため該切粉がア
ーバ又は首部４を押し上げて加工精度を悪化せし
めたり加工面３にうねりを生ずるという欠点が生
じた。特に夜間等に於ける無人運転にあつては、
このように切粉が堆積したまま加工作業を進める
とフライス１の折損事故をも招く虞があつた。 Conventionally, when a milling cutter 1 is used to cut a flat or arcuate concave machined surface 3 to a depth _{l 2} _that is longer than the blade length l 1 of the blade part 2 as shown in FIG. In many cases, the chips were not discharged while being stuck between the machined surface 3 and the arbor or the neck 4, and were entangled with each other to form lumps and accumulate between the machined surface 3 and the arbor or the neck 4. As a result, the chips push up the arbor or neck 4, resulting in poor machining accuracy and undulations on the machined surface 3. Especially when it comes to unmanned driving at night etc.
If the machining operation was continued with the chips accumulated in this way, there was a risk that the milling cutter 1 would break.

本考案は上記の事情に鑑みなされたもので、そ
の目的は構造上の簡単な改良により、加工面とア
ーバ又は首部との間に切粉が滞留しないフライス
工具を提供することにある。 The present invention was devised in view of the above circumstances, and its purpose is to provide a milling tool in which chips do not accumulate between the machining surface and the arbor or neck by simple structural improvements.

以下本考案を実施例について図面に基づき説明
する。第２図は本考案に係るフライス工具の一例
としてフライス５の側面図、第３図は第２図の
−断面図である。そこでフライス５の首部６の
外周面６ａには刃部７の捩じれと同一の向きに捩
じれた切粉処理板としての突条８が、該首部６の
ほぼ全長に亘つて固設されている。該突条８の高
さは首部６の外周面６ａよりも高く且つ刃部７の
刃先を結ぶ仮想円７ａの延長面よりも低い。 The present invention will be described below with reference to the drawings. FIG. 2 is a side view of a milling cutter 5 as an example of a milling tool according to the present invention, and FIG. 3 is a cross-sectional view taken from FIG. Therefore, on the outer circumferential surface 6a of the neck portion 6 of the milling cutter 5, a protrusion 8 serving as a chip disposal plate twisted in the same direction as the twisting of the blade portion 7 is fixedly provided over almost the entire length of the neck portion 6. The height of the protrusion 8 is higher than the outer peripheral surface 6a of the neck portion 6 and lower than the extension surface of the imaginary circle 7a connecting the cutting edges of the blade portion 7.

次に該フライス５の作用について説明をする。
該フライス５により平面上の加工面９をフライス
加工する際刃部７で発生した切粉が首部６の方に
押し出されると、該切粉は第４図及び第５図に示
す如く突条８により首部６の円周方向（矢印Ａ）
又は首部６の長手方向後方（矢印Ｂ）に強制的に
移動させられるので、切粉が首部６と加工面９と
の間に滞留することはほとんどない。また首部６
と加工面９との間に滞留した切粉は、突条８によ
り切粉同士がからみ合つて団塊状になることを妨
げられ、矢印Ａ又はＢの如く排出される。従つて
切粉が首部６を押し上げることがない。 Next, the function of the milling cutter 5 will be explained.
When the milling cutter 5 mills the plane surface 9, the chips generated at the blade part 7 are pushed out toward the neck part 6, and the chips form the protrusions 8 as shown in FIGS. 4 and 5. The circumferential direction of the neck 6 (arrow A)
Alternatively, since the chips are forcibly moved backward in the longitudinal direction of the neck portion 6 (arrow B), the chips hardly remain between the neck portion 6 and the machining surface 9. Also neck 6
The chips accumulated between the machining surface 9 and the machining surface 9 are prevented from intertwining with each other and forming a lump shape by the protrusions 8, and are discharged as shown by arrows A and B. Therefore, chips do not push up the neck 6.

以上の説明から明らかな如く本考案に係るフラ
イス工具は首部に所定高の捩じれた突条を設けた
から、首部と加工面との間に切粉が堆積して、こ
の切粉が首部を押し上げる虞がない。従つて加工
面にうねりの生ずることがなく、加工精度も向上
し、さらに無人運転に於いても切損事故の危険が
なく安定した切削状態が確保できることとなつ
た。 As is clear from the above explanation, since the milling tool according to the present invention has a twisted protrusion of a predetermined height on the neck, there is a risk that chips may accumulate between the neck and the machined surface and push up the neck. There is no. Therefore, waviness does not occur on the machined surface, machining accuracy is improved, and even during unmanned operation, stable cutting conditions can be ensured without the risk of cutting accidents.

[Brief explanation of the drawing]

第１図は従来技術に係る平フライスの使用状態
を説明する断面図である。第２図から第５図まで
は本考案の実施例を表し、第２図は平フライスの
側面図、第３図は第２図の−断面図、第４図
は平フライスの使用状態を説明する断面図、第５
図は第４図の−断面図である。５……平フライス、６……首部、６ａ……外周
面、７……刃部、７ａ……仮想円、８……突条。 FIG. 1 is a sectional view illustrating the state of use of a flat milling cutter according to the prior art. Figures 2 to 5 show embodiments of the present invention, with Figure 2 being a side view of the flat milling cutter, Figure 3 being a cross-sectional view of Figure 2, and Figure 4 explaining how the flat milling cutter is used. 5th cross-sectional view
The figure is a - sectional view of FIG. 4. 5... Flat milling cutter, 6... Neck, 6a... Outer peripheral surface, 7... Blade, 7a... Virtual circle, 8... Projection.

Claims

[Scope of utility model registration request]

In a milling tool where the outer diameter of the blade part is larger than the outer diameter of the arbor or neck part, the outer diameter of the cutter part is lower than the extension surface of an imaginary circle connecting the cutting edges of the blade part and higher than the outer diameter of the arbor or neck part, and when the tool rotates, chips are generated. A milling tool comprising a protrusion twisted in a direction away from the blade part and provided along the outer peripheral surface of the arbor or neck part.