JPH0426167Y2 - - Google Patents
Info
- Publication number
- JPH0426167Y2 JPH0426167Y2 JP1989095895U JP9589589U JPH0426167Y2 JP H0426167 Y2 JPH0426167 Y2 JP H0426167Y2 JP 1989095895 U JP1989095895 U JP 1989095895U JP 9589589 U JP9589589 U JP 9589589U JP H0426167 Y2 JPH0426167 Y2 JP H0426167Y2
- Authority
- JP
- Japan
- Prior art keywords
- cutting
- throw
- thread
- away
- recess
- 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.)
- Expired
Links
- 238000005520 cutting process Methods 0.000 claims description 95
- 238000004804 winding Methods 0.000 claims description 17
- 239000002699 waste material Substances 0.000 description 20
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000002093 peripheral effect Effects 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 1
- 239000011195 cermet Substances 0.000 description 1
- 244000145845 chattering Species 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005192 partition Methods 0.000 description 1
- 238000009751 slip forming Methods 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Description
【考案の詳細な説明】
(産業上の利用分野)
本考案は、切削工具に取り付けて使用されるス
ローアウエイチツプに関し、特に切削屑の処理性
を改善したネジ切り用として好適なスローアウエ
イチツプに関する。[Detailed description of the invention] (Field of industrial application) The present invention relates to a throw-away tip that is used by being attached to a cutting tool, and particularly relates to a throw-away tip that is suitable for thread cutting and has improved disposal of cutting waste. .
(従来の技術)
ネジ切り加工においても、他の切削加工と同様
に切削屑を工具や被切削物に巻き付かないように
切削屑を細かく破断することが好ましいが、切り
込み量が極度に少なく、送り速度が大きい切削条
件下では切削屑の破断が極めて困難であり、切削
屑をチツプブレーカ等によつて無理に破断しよう
とすると、切削抵抗が増大して剛性のない材料等
では、所謂ビビリと呼ばれる異常振動が発生し加
工精度が低下するものであつた。(Prior art) In thread cutting, as in other cutting processes, it is preferable to break the cutting waste into small pieces so that the cutting waste does not get wrapped around the tool or the workpiece, but the depth of cut is extremely small. It is extremely difficult to break the chips under cutting conditions where the feed rate is high, and if you try to forcefully break the chips with a chip breaker, etc., the cutting resistance will increase, and if the material is not rigid, it will cause so-called chattering. Abnormal vibrations called so-called abnormal vibrations occurred and machining accuracy decreased.
このため、従来よりネジ切り用のスローアウエ
イチツプでは、チツプブレーカを形成しないか、
第5図に示す如く切刃52と本体側とを仕切るよ
うに切刃52の近くに溝53を形成したものが使
用されてきた。しかし、これらのスローアウエイ
チツプ51では、切削屑を細かく破断させたり、
排出方向を制御したり、切削屑の巻き込みを安定
化させたりすることができず、長く延びた切削屑
が工具や被切削物等に巻き付いてしまう問題があ
つた。 For this reason, conventional throw-away tips for thread cutting either do not form a tip breaker or
As shown in FIG. 5, a tool in which a groove 53 is formed near the cutting edge 52 to partition the cutting edge 52 from the main body side has been used. However, these throw-away tips 51 break the cutting waste into small pieces,
It is not possible to control the ejection direction or stabilize the entrainment of cutting chips, and there is a problem in that long cutting chips wind around tools, objects to be cut, and the like.
このため、これらの問題を解消するために、す
くい面に凹部を形成し、切削屑の排出をスムーズ
に行なおうとする目的のネジ切り用スローアウエ
イチツプが実願昭62−5047や実願昭62−106694に
開示されている。 Therefore, in order to solve these problems, a throw-away tip for thread cutting was developed in which a recess was formed on the rake face and the cutting waste was smoothly discharged. No. 62-106694.
(考案が解決しようとする課題)
しかしながら、前者では凹部が切刃の後方に離
隔して設けられているため、切削屑を切刃から凹
部にまで送出する際の制御に問題が残つており、
また、後者では凹部が切刃近傍に形成されている
ために、切削屑は凹部にスムーズに送出される
が、該部で安定した弦巻き線状(規則的なカール
状)に巻き込むことに問題が残つているものであ
つた。(Problem to be solved by the invention) However, in the former case, since the recess is provided at a distance behind the cutting blade, there remains a problem in controlling the delivery of cutting chips from the cutting blade to the recess.
In addition, in the latter case, since the recess is formed near the cutting edge, the cutting chips are sent smoothly into the recess, but there is a problem in winding them into a stable string-wound shape (regular curl shape). was what remained.
本考案は、上記問題点を解決し、ネジ切りの際
に生じる切削屑をスムーズに凹部に送出し、かつ
切削屑を安定して弦巻き線状に排出することがで
きるネジ切り用スローアウエイチツプを提供せん
とするものである。 The present invention is a throw-away tip for thread cutting that solves the above problems, smoothly sends the cutting waste generated during thread cutting into the recess, and stably discharges the cutting waste in a string-wound shape. We aim to provide the following.
(課題を解決するための手段)
上記目的を達成するために本考案は、コーナー
部にネジ溝形状に対応した切刃を有したネジ切り
用スローアウエイチツプであつて、該切刃内方の
上面部分を該切刃よりも凹んだ送出溝とし、該送
出溝よりも凹みが深くかつ少なくともスローアウ
エイチツプの一側面上部を切欠いて側面開口部を
設けた巻込み用凹部を上記送出溝内方の一側面寄
りに連続してネジ切り用スローアウエイチツプを
形成したことを特徴とする。(Means for Solving the Problems) In order to achieve the above object, the present invention is a throw-away tip for thread cutting, which has a cutting edge corresponding to the shape of a thread groove at a corner portion, and has a cutting edge inside the cutting edge. The upper surface part is a delivery groove recessed than the cutting edge, and a winding recess which is deeper than the delivery groove and has a side opening by notching the upper part of at least one side of the throwaway chip is provided inside the delivery groove. A thread-cutting throw-away tip is continuously formed near one side of the thread-cutting tip.
この場合、上記側面開口部がスローアウエイチ
ツプのネジ切り方向側(進行方向前側)に設けて
あり、さらに巻き込み用凹部の凹底部が切刃の二
等分線よりも進行方向側に位置して形成されてい
ることが好ましい。 In this case, the side opening is provided on the thread cutting direction side (front side in the advancing direction) of the throw-away tip, and the concave bottom of the winding recess is located on the advancing direction side than the bisector of the cutting edge. It is preferable that it is formed.
(作用)
上記ネジ切り用スローアウエイチツプによれ
ば、切刃で生じた切削屑は、送出溝に案内されて
巻込み用凹部に送出され、該巻込み用凹部で連続
的にカールされる。該巻込み用凹部が一側面に開
口していることによつて切削屑は、弦巻き線状に
巻き込まれつつ側面開口部から排出させることに
なり、切削屑は凹底部に案内される。(Function) According to the throw-away tip for thread cutting, the cutting waste generated by the cutting blade is guided by the delivery groove and delivered to the winding recess, and is continuously curled in the winding recess. Since the winding recess is open on one side, the cutting waste is wound up in a string-wound shape and discharged from the side opening, and the cutting waste is guided to the bottom of the recess.
(実施例)
以下、本考案に係るネジ切り用スローアウエイ
チツプの実施例を図面によつて説明する。(Example) Hereinafter, an example of the throw-away tip for thread cutting according to the present invention will be described with reference to the drawings.
第1図乃至第4図は、ネジ切り用スローアウエ
イチツプの一実施例を示すもので、第1図はその
斜視図であり、第2図は切刃部分を示す部分拡大
平面図、第3図はその側面図、第4図は使用状態
の切削屑の流れを模式的に示した平面略図であ
る。 1 to 4 show an embodiment of the throw-away tip for thread cutting, in which FIG. 1 is a perspective view thereof, FIG. 2 is a partially enlarged plan view showing the cutting blade portion, and FIG. The figure is a side view thereof, and FIG. 4 is a schematic plan view schematically showing the flow of cutting waste during use.
ネジ切り用スローアウエイチツプ(以下、チツ
プと言う。)1は、超硬合金、サーメツト、セラ
ミツク等からなる略々三角形状をした厚肉の板体
であつて、上下両面にチツプ支持面2を有し、そ
の中央に切削装置取付け用の挿通孔3が貫通形成
されており、各コーナー部4の外周縁にはネジ溝
形状に適応した切刃5形成され、該コーナー部4
の側面は該切刃5と略同形断面を有する逃げ面6
となつており、切刃5の上面は内方向に下り傾斜
すると共に、該切刃5に沿つた狭幅のランド7を
残してその内側に若干の深さ(例えば、0.05〜
0.5mm)を有しかつ後述する巻込み用凹部9の方
向に下り傾斜した切削屑用の送出溝8が形成さ
れ、該送出溝8に連続して上面のネジ切り方向側
に該送出溝8よりも深い摺り鉢状の上方拡開曲面
を有した切削屑の巻込み用凹部9が、ネジ切り方
向側のチツプ側面上部を一部切欠くようにして形
成され、該切欠き部分は側面開口部10となつて
いる。上記巻込み用凹部9は、その凹底部9aが
切刃5の二等分線(仮想線)Xよりも進行方向側
に形成され、該凹部内の周面が該凹底部に向かつ
て下り傾斜面として形成されている。 A throw-away tip for thread cutting (hereinafter referred to as a tip) 1 is a thick plate in a roughly triangular shape made of cemented carbide, cermet, ceramic, etc., and has tip support surfaces 2 on both upper and lower surfaces. An insertion hole 3 for attaching a cutting device is formed in the center thereof, and a cutting edge 5 adapted to the shape of a thread groove is formed on the outer peripheral edge of each corner portion 4.
The side surface is a flank surface 6 having a cross section substantially the same as that of the cutting edge 5.
The upper surface of the cutting edge 5 slopes downward inward, and leaves a narrow land 7 along the cutting edge 5, with a slight depth (for example, 0.05~
A cutting waste delivery groove 8 having a diameter of 0.5 mm) and sloping downward in the direction of a winding recess 9, which will be described later, is formed. A concave part 9 for trapping cutting chips having a mortar-like upwardly expanding curved surface deeper than the above is formed by partially notching the upper part of the side surface of the chip on the threading direction side, and the notch part is formed by a side opening. It is designated as part 10. The winding recess 9 has a recess bottom 9a formed on the traveling direction side of the bisector (imaginary line) X of the cutting edge 5, and a peripheral surface within the recess slopes downward toward the recess bottom It is formed as a surface.
また、切刃5を挟んだ上記側面開口部10とは
反対側の側面外周縁部は、切刃5から折曲して該
切刃5の二等分線Xに直交する方向の縁11若し
くは該直交する縁よりも内側方向の縁として形成
され、該縁の内側は該反対側上部を一部切欠くよ
うにした凹陥部11aとなつている。 Further, the outer peripheral edge of the side surface opposite to the side surface opening 10 across the cutting edge 5 is bent from the cutting edge 5 to form an edge 11 or an edge 11 in a direction perpendicular to the bisector X of the cutting edge 5. It is formed as an edge inward of the orthogonal edges, and the inner side of the edge is a recessed portion 11a with a portion of the upper portion of the opposite side cut out.
而して、スローアウエイバイトの挿着部にチツ
プ1をその挿通孔3にボルト等を挿通す等して固
定し、該スローアウエイバイトを切削装置に挿着
して、丸棒等の適宜な被切削物20に切刃5を押
し当てて、所定速度でネジ切り方向にこれを送り
込んでやれば、第4図の如く、切刃5によつて被
切削物20にネジ溝が形成され、これと同時に該
部に切削屑21が生じる。切刃5で生じた切削屑
21はランド7を乗り越えて送出溝8内に入り、
該送出溝8に案内されつつ後続の切削屑21によ
つて押しやられて巻込み用凹部9に移動させられ
る。さらに、該切削屑21は、巻込み用凹部9の
傾斜した壁面に当突して、連続的に上方にカール
しつつ巻き込まれ、チツプ1側面に設けられた側
面開口部10から弦巻き線状となつてチツプ1の
ネジ切り方向に排出される。この際、凹底部9a
が切刃5の二等分線よりも進行方向側に形成され
ていることにより、切削屑は安定して進行方向側
に排出され、加工済部分に巻き付いたり、接触し
たりするおそれが確実に排除される。 Then, the tip 1 is fixed to the insertion part of the throw-away tool by inserting a bolt or the like into the insertion hole 3, and the throw-away tool is inserted into a cutting device and a suitable tool such as a round bar or the like is inserted into the cutting device. When the cutting blade 5 is pressed against the workpiece 20 and fed in the thread cutting direction at a predetermined speed, a thread groove is formed in the workpiece 20 by the cutting blade 5 as shown in FIG. At the same time, cutting debris 21 is generated in the area. The cutting debris 21 generated by the cutting edge 5 climbs over the land 7 and enters the delivery groove 8.
While being guided by the delivery groove 8, it is pushed away by the following cutting waste 21 and moved to the winding recess 9. Furthermore, the cutting waste 21 hits the inclined wall surface of the winding recess 9, is rolled up while continuously curling upward, and is formed into a string-wound wire shape from the side opening 10 provided on the side surface of the chip 1. The chip 1 is then discharged in the threading direction. At this time, the concave bottom 9a
is formed on the advancing direction side of the bisector of the cutting edge 5, so that the cutting chips are stably discharged in the advancing direction, and there is no risk of them wrapping around or coming into contact with the machined part. be excluded.
なお、縁11は切刃となし得る場合と切刃とな
らない場合とがある。ネジ山部分をさらうか否か
はネジの精度や表面粗さ等によつて選択すること
ができ、刃とする場合は、縁11を前記したよう
に切刃5の二等分に直交する方向に形成されてい
れば使用可能である。 Note that the edge 11 may be used as a cutting edge or may not be used as a cutting edge. Whether or not to remove the threaded portion can be selected depending on the precision of the screw, surface roughness, etc. If the thread is used as a blade, the edge 11 should be removed in a direction perpendicular to the bisect of the cutting edge 5 as described above. It can be used if it is formed.
上記において、チツプは、略三角形状の板体に
限定されることなく、各種多角形状の板体に適応
可能であり、また、切刃形状も種々のネジ溝形状
に対応させて制作することができる。さらに挿通
孔3がなく、上部から固定するクランプ構成であ
つてもよく、上下両面に上記上面と同様の構成を
設けておき、両面を使用するようにしてもよい。 In the above, the tip is not limited to a substantially triangular plate, but can be applied to various polygonal plates, and the cutting edge shape can also be manufactured to correspond to various thread groove shapes. can. Furthermore, it may have a clamp configuration in which the insertion hole 3 is not provided and it is fixed from the top, or it is also possible to provide the same configuration as the above-mentioned upper surface on both the upper and lower surfaces and use both surfaces.
(考案の効果)
以上のようにして、本考案のネジ切り用スロー
アウエイチツプによれば、ネジ切り加工に伴つて
生じる切削屑を送出溝を通つて巻込み用凹部に送
出することで切削屑の送出方向を一定化し、切削
屑の送出を円滑に行うことができ、同時に巻込み
用凹部で切削屑が連続的に上方カールさせられて
巻き込まれ、側面開口部から弦巻き線状に排出さ
れるために、切削屑が工具や被切削物に巻き付く
ことがなく、切削屑の処理性を向上することがで
き、生産効率が高めることができる。(Effects of the invention) As described above, according to the throw-away tip for thread cutting of the present invention, the cutting waste generated during thread cutting is sent out through the delivery groove to the winding recess. At the same time, the cutting waste is continuously curled upward in the winding recess and rolled up, and is discharged from the side opening in a string-wound shape. Therefore, the cutting waste does not get wrapped around the tool or the workpiece, and the processing efficiency of the cutting waste can be improved, and production efficiency can be increased.
また、ネジ切り方向側の側面に巻込み用凹部の
開口部を形成した場合は、該部からチツプの進行
方向側に弦巻き線状に巻き込まれて切削屑が排出
されることになり、ネジ切り加工の施された部位
に接触させることがないために、該部位を損傷さ
せることがなく、品質の高いネジやボルト及びそ
の他螺条を必要とするものを効率的に生産するこ
とができ、これらの生産コストを引き下げること
ができる。 In addition, if an opening for the winding recess is formed on the side surface in the thread cutting direction, the cutting waste will be rolled up in a spiral shape from the opening in the direction in which the chip advances, and will be discharged from the thread. Since it does not come into contact with cut parts, it does not damage the parts, and it is possible to efficiently produce high-quality screws, bolts, and other items that require threads. These production costs can be reduced.
上記効果は巻込み用凹部の凹底部が切刃の二等
分線よりも進行方向側に位置するように形成され
ていることによつて一層確実に安定する。 The above effect is more reliably stabilized by forming the concave bottom of the winding concave portion to be located on the advancing direction side with respect to the bisector of the cutting blade.
第1図は本考案に係るネジ切り用スローアウエ
イチツプの一実施例を示す斜視図、第2図は同じ
く切刃部分を示す部分拡大平面図、第3図はその
側面図、第4図は使用状態の切削屑の流れを模式
的に示した平面略図、第5図は従来例を示す平面
図である。
1……ネジ切り用スローアウエイチツプ、4…
…コーナー部、5……切刃、8……送出溝、9…
…巻込み用凹部、10……側面開口部。
Fig. 1 is a perspective view showing one embodiment of the throw-away tip for thread cutting according to the present invention, Fig. 2 is a partially enlarged plan view showing the cutting blade portion, Fig. 3 is a side view thereof, and Fig. 4 is FIG. 5 is a schematic plan view schematically showing the flow of cutting waste during use, and FIG. 5 is a plan view showing a conventional example. 1... Throwaway tip for thread cutting, 4...
... Corner part, 5 ... Cutting edge, 8 ... Delivery groove, 9 ...
...Recess for winding, 10... Side opening.
Claims (1)
したネジ切り用スローアウエイチツプであつ
て、該切刃内方の上面部分を該切刃よりも凹ん
だ送出溝とし、該送出溝よりも凹みが深くかつ
スローアウエイチツプの一側面上部を切欠いて
側面開口部を設けてなる巻込み用凹部を上記送
出溝内方の一側面寄りに連続して形成したこと
を特徴とするネジ切り用スローアウエイチツ
プ。 (2) 上記側面開口部がスローアウエイチツプのネ
ジ切り方向側に設けられている第1項記載のネ
ジ切り用スローアウエイチツプ。 (3) 巻込み用凹部の凹底部が切刃の二等分線より
も進行方向側に位置して形成されている第1項
又は第2項記載のネジ切り用スローアウエイチ
ツプ。[Scope of Claim for Utility Model Registration] (1) A throw-away tip for thread cutting having a cutting edge corresponding to the shape of a thread groove at a corner portion, the upper surface portion of which is inside the cutting edge being recessed than the cutting edge. A recess for winding is formed continuously near one side inside the throw-away groove, and the throw-away chip has a recess deeper than the throw-away groove and has a side opening by notching the upper part of one side of the throw-away chip. Throw-away tip for thread cutting. (2) The throw-away tip for thread cutting according to item 1, wherein the side opening is provided on the thread-cutting direction side of the throw-away tip. (3) The throw-away tip for thread cutting according to item 1 or 2, wherein the bottom of the winding recess is located on the advancing direction side of the bisector of the cutting blade.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP1989095895U JPH0426167Y2 (en) | 1988-08-25 | 1989-08-16 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP11134788 | 1988-08-25 | ||
JP1989095895U JPH0426167Y2 (en) | 1988-08-25 | 1989-08-16 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPH0278218U JPH0278218U (en) | 1990-06-15 |
JPH0426167Y2 true JPH0426167Y2 (en) | 1992-06-24 |
Family
ID=31718703
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP1989095895U Expired JPH0426167Y2 (en) | 1988-08-25 | 1989-08-16 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH0426167Y2 (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7757591B2 (en) * | 2005-10-19 | 2010-07-20 | 3M Innovative Properties Company | Aligned multi-diamond cutting tool assembly for creating microreplication tools |
JP2009119578A (en) * | 2007-11-16 | 2009-06-04 | Kyocera Corp | Cutting insert for groove forming |
JP6462126B2 (en) * | 2015-06-23 | 2019-01-30 | 京セラ株式会社 | CUTTING INSERT, CUTTING TOOL, AND CUTTING PRODUCT MANUFACTURING METHOD USING THE SAME |
US20230415239A1 (en) * | 2020-12-04 | 2023-12-28 | Kyocera Corporation | Cutting insert, cutting tool, and method for manufacturing machined product |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5162476A (en) * | 1974-11-28 | 1976-05-31 | Dijet Ind Co Ltd | SUROOAUEICHIT SUPU |
JPS5964205A (en) * | 1982-09-07 | 1984-04-12 | ザ・ヴアレロン・コ−ポレ−シヨン | Chip breaker insert for metal cutting tool |
JPS59175902A (en) * | 1983-03-15 | 1984-10-05 | サントレ−ド・リミテイド | Threading cutting inserted tooth tool |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS58154021U (en) * | 1982-04-06 | 1983-10-14 | 東芝タンガロイ株式会社 | thread cutting tool |
JPS63113502U (en) * | 1987-01-16 | 1988-07-21 |
-
1989
- 1989-08-16 JP JP1989095895U patent/JPH0426167Y2/ja not_active Expired
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5162476A (en) * | 1974-11-28 | 1976-05-31 | Dijet Ind Co Ltd | SUROOAUEICHIT SUPU |
JPS5964205A (en) * | 1982-09-07 | 1984-04-12 | ザ・ヴアレロン・コ−ポレ−シヨン | Chip breaker insert for metal cutting tool |
JPS59175902A (en) * | 1983-03-15 | 1984-10-05 | サントレ−ド・リミテイド | Threading cutting inserted tooth tool |
Also Published As
Publication number | Publication date |
---|---|
JPH0278218U (en) | 1990-06-15 |
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