JP2526213Y2 - Cutting tools - Google Patents
Cutting toolsInfo
- Publication number
- JP2526213Y2 JP2526213Y2 JP1991092935U JP9293591U JP2526213Y2 JP 2526213 Y2 JP2526213 Y2 JP 2526213Y2 JP 1991092935 U JP1991092935 U JP 1991092935U JP 9293591 U JP9293591 U JP 9293591U JP 2526213 Y2 JP2526213 Y2 JP 2526213Y2
- Authority
- JP
- Japan
- Prior art keywords
- mounting groove
- tip
- wedge member
- wall surface
- cutting edge
- 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 - Fee Related
Links
Landscapes
- Milling Processes (AREA)
Description
【０００１】[0001]
【産業上の利用分野】この考案は、例えば正面フライス
などの切削工具に係り、なかでもアルミニウム合金等の
軟質材料を切削する場合に用いて好適な切削工具に関す
る。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutting tool such as a face mill, and more particularly to a cutting tool suitable for cutting a soft material such as an aluminum alloy.
【０００２】[0002]
【従来の技術】アルミニウム合金等の軟質材料の切削に
おいては、良好な加工精度と高い生産性を実現するため
に、通常の鋼材の切削に比して遥かに高い切削速度が要
求されることが多く、このため加工に用いられる切削工
具の回転数も数千r.p.m.から、ときとして一万r.p.m.を
越える高速領域に設定される。ところで、このような高
速領域で切削工具を回転させた場合、切刃チップを楔部
材で押さえつける構成のスローアウェイ式切削工具で
は、切刃チップに強大な遠心力が作用し、これにより切
刃チップが工具本体のチップ取付溝から外部へ飛び出し
てしまう可能性がある。そこで、かかる切刃チップの飛
び出しを確実に防止する切削工具として、例えば図１３
及び図１４に示すような正面フライス１が提供されてい
る（実開昭６２−６８７１２号）。すなわち、図示の正
面フライス１は、工具本体２のチップ取付溝３に挿入さ
れる切刃チップ４が、クランプボルト５で締め付けられ
る楔部材６によって工具本体２の周方向へ押さえ付けら
れてなるもので、チップ取付溝３の周方向を向く壁面３
ａにピン７が打ち込まれてその先端部が突出せしめられ
ることにより、当該壁面３ａに凸部８が形成される一方
で、壁面３ａに当接する切刃チップ４の下面９に凸部８
と嵌合する凹部１０が形成され、これら凸部８と凹部１
０とが嵌合した状態で切刃チップ４が楔部材６によって
押え込まれることにより、切刃チップ４の工具外周側へ
の飛び出し防止が図られている。2. Description of the Related Art In cutting a soft material such as an aluminum alloy, a much higher cutting speed than that of a normal steel material is required in order to realize good machining accuracy and high productivity. For this reason, the number of revolutions of the cutting tool used for machining is also set to a high-speed range from several thousand rpm, sometimes exceeding 10,000 rpm. By the way, when the cutting tool is rotated in such a high-speed region, a strong centrifugal force acts on the cutting edge tip in a throw-away type cutting tool in which the cutting edge tip is pressed by a wedge member, whereby the cutting edge tip is May jump out of the chip mounting groove of the tool body to the outside. Therefore, as a cutting tool for reliably preventing the cutting edge tip from popping out, for example, FIG.
A face mill 1 as shown in FIG. 14 is provided (Japanese Utility Model Laid-Open No. 62-68712). That is, the illustrated face mill 1 is configured such that the cutting edge tip 4 inserted into the tip mounting groove 3 of the tool body 2 is pressed in the circumferential direction of the tool body 2 by the wedge member 6 tightened by the clamp bolt 5. The wall surface 3 facing the circumferential direction of the chip mounting groove 3
When the pin 7 is driven into the inner surface of the cutting edge tip 4 and the tip of the pin 7 is protruded, a convex portion 8 is formed on the wall surface 3a.
A concave portion 10 is formed to fit with the convex portion 8 and the concave portion 1.
The cutting edge tip 4 is pressed down by the wedge member 6 in a state where 0 is fitted, thereby preventing the cutting edge tip 4 from protruding to the outer peripheral side of the tool.
【０００３】[0003]
【考案が解決しようとする課題】ところが、上述した従
来の正面フライス１は、切刃チップ４の飛び出し防止に
関してはほぼ十分な効果が得られるものの、切刃チップ
４を着脱する際の作業性が悪く、この点でいまだ改善の
余地があった。すなわち、図１３及び図１４に示す正面
フライス１では、チップ取付溝３の壁面３ａから凸部８
が飛び出しているので、切刃チップ４をチップ取付溝３
に対して着脱するには、楔部材６の側面６ａとチップ取
付溝３の壁面３ａとの間に切刃チップ４の厚さと凸部８
の突出量とを加えた量を越える隙間をあけておく必要が
ある。しかしながら、楔部材６の側面６ａの壁面３ａに
対する傾斜角が微小であるため、切刃チップ４を着脱可
能ならしめるまでの隙間をあけるためにはクランプボル
ト５を相当数回転させて楔部材６をその挿入方向へ大き
く移動させなければならず、この作業をすべての切刃チ
ップ４について行えば作業時間が著しく増加してしまう
のである。この考案は、このような背景の下になされた
もので、切刃チップの飛び出し防止のための凹部及び凸
部を形成した場合でも、切刃チップの着脱を容易かつ迅
速に行い得る切削工具を提供することを目的とする。However, although the conventional face mill 1 described above has an almost sufficient effect with respect to preventing the cutting edge tip 4 from popping out, the workability when attaching and detaching the cutting edge tip 4 is low. Unfortunately, there was still room for improvement in this regard. That is, in the front milling machine 1 shown in FIGS.
Is protruding, so that the cutting edge tip 4 is
The thickness of the cutting edge tip 4 and the height of the projection 8 are set between the side surface 6a of the wedge member 6 and the wall surface 3a of the tip mounting groove 3 for attachment and detachment.
It is necessary to provide a gap exceeding the sum of the protrusion amount of the first and second protrusions. However, since the inclination angle of the side surface 6a of the wedge member 6 with respect to the wall surface 3a is minute, the clamp bolt 5 is rotated a considerable number of times to make the gap until the cutting edge tip 4 can be detachably attached. This operation must be largely moved in the insertion direction, and if this operation is performed for all the cutting edge chips 4, the operation time will be significantly increased. The present invention has been made under such a background, and a cutting tool capable of easily and quickly attaching and detaching a cutting edge tip even when forming a concave portion and a convex portion for preventing the cutting edge tip from popping out. The purpose is to provide.
【０００４】[0004]
【課題を解決するための手段】上記課題を解決するため
にこの考案の切削工具は、工具本体に形成されたチップ
取付溝に配置され、チップ取付溝内の一方の壁面に接す
る切刃チップと、切刃チップとチップ取付溝の他方の壁
面との間に配置され、チップ取付溝の底面に向かう挿入
方向に挿入されて切刃チップを一方の壁面に押圧する楔
部材とを備え、一方の壁面と、当該一方の壁面に接する
切刃チップの面とは、そのいずれか一方に凸部を有し、
そのいずれか他方に前記凸部に嵌合する凹部を有し、該
凹部と前記凸部との嵌合により切刃チップが係止される
切削工具であって、チップ取付溝は、その延在方向に楔
部材を移動させることで切刃チップに対して当該楔部材
が接離自在となるように形成され、チップ取付溝の底面
には、チップ取付溝の延在方向に延在するボルト取付溝
が形成され、このボルト取付溝は、拡大部と、該拡大部
とチップ取付溝との間に配される狭窄部とを有し、この
ボルト取付溝の拡大部には、ナットが、狭窄部によりチ
ップ取付溝側への移動を阻止された状態で、ボルト取付
溝の延在方向に移動自在に配置され、このナットには、
楔部材に取り付けられたクランプボルトが螺合され、ク
ランプボルトとナットは、楔部材をボルト取付溝の底面
に向けて締め付け自在、且つ楔部材とともに延在方向に
移動自在となるように締め付け解除自在に設けられてい
ることを特徴とするものである。ここで、上記チップ取
付溝の壁面のうち、上記切刃チップが押圧される一方の
壁面は、上記チップ取付溝内に装着される保持具の壁面
によって構成される場合も含む。SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, a cutting tool according to the present invention is arranged in a chip mounting groove formed in a tool main body and comes into contact with one wall surface in the chip mounting groove.
Cutting edge and the other wall of the cutting edge and the tip mounting groove
Face and inserted towards the bottom of the chip mounting groove
Wedge inserted in one direction to press the cutting edge tip against one wall
Member, and is in contact with one wall surface and the one wall surface
The surface of the cutting edge tip has a convex portion on one of the surfaces,
One of the other has a concave portion to be fitted to the convex portion,
The cutting edge tip is locked by the fitting of the concave portion and the convex portion.
A cutting tool, wherein the chip mounting groove has a wedge in its extending direction.
The wedge member is moved with respect to the cutting edge tip by moving the member.
There is formed so as to be freely separable bottom surface of the chip mounting groove
Is formed with a bolt mounting groove extending in a direction in which the chip mounting groove extends . The bolt mounting groove has an enlarged portion and the enlarged portion.
Chi and has a constriction portion arranged between the chip mounting groove, the enlarged portion of the bolt mounting groove nut, the constriction
In a state where movement to the bolt mounting groove side is prevented , the nut is disposed so as to be movable in the extending direction of the bolt mounting groove .
Kuranpuboru bets attached to the wedge member is screwed, click
For the lamp bolt and nut, attach the wedge member to the bottom of the bolt mounting groove.
In the direction of extension with the wedge member
It is characterized in that it is provided so as to be movable so that it can be freely tightened and released . Here, among the wall surfaces of the chip mounting groove, the wall surface of the hand in which the cutting insert is pressed, includes the case formed by the wall surface of the holder to be mounted on the chip mounting groove.
【０００５】[0005]
【作用】クランプボルトを緩めて楔部材による切刃チッ
プの押圧を解除した上で、楔部材をチップ取付溝の延在
方向へ移動させることにより、楔部材を切刃チップの表
面から逃して当該切刃チップをチップ取付溝の両壁面間
で移動可能な状態におくことができる。これにより、切
刃チップとチップ取付溝の一方の壁面との間に形成され
る凸部及び凹部を着脱可能とし、楔部材をその挿入方向
の正逆方向に大きく移動させるためにクランプボルトを
相当数回転させる手間をかけることなく切刃チップの着
脱を行うことができる。そして、ナットを受け入れるボ
ルト取付溝の拡大部が断面円形であるため、ドリル等の
穴あけ工具によって容易に形成でき、また、拡大部の内
壁が一様に湾曲しているためにクランプボルトを締め付
けた場合でも応力集中が生じにくい。[Action] Loosen the clamp bolt and cut the cutting edge chip with the wedge member.
On releasing the pressing of the up, by moving the wedge member to extend <br/> direction Ji-up mounting groove, the wedge member cutting inserts Table
Missing surface or found between both wall surfaces of the cutting insert the chip mounting groove
In can be placed a movable state. Thereby, the protrusion and the recess formed between the cutting edge tip and one wall surface of the tip mounting groove are made detachable, and the wedge member is inserted in the insertion direction.
The clamp bolt to move it greatly in the forward and reverse directions.
The cutting blade tip can be attached and detached without taking a considerable number of rotations . Since the enlarged portion of the bolt mounting groove for receiving the nut has a circular cross section, it can be easily formed by a drilling tool such as a drill, and the inner wall of the enlarged portion is uniformly curved, so the clamp bolt is tightened. In this case, stress concentration is unlikely to occur.
【０００６】[0006]
【実施例】以下、図１〜図１０を参照して、本考案の一
実施例を説明する。図１及び図２に示すように、本実施
例の正面フライス２０では、工具本体２１の外周部に当
該工具本体２１の先端面２１ａおよび外周面２１ｂに開
口するチップ取付溝２２が形成され、該チップ取付溝２
２に切刃チップ２３が挿入され、該切刃チップ２３が、
チップ取付溝２２の周方向を向く壁面２４、２５のうち
の一方の壁面２４と当該切刃チップ２３との間に、工具
本体２１の外周側から挿入される楔部材２６によってチ
ップ取付溝２２の周方向を向く壁面２４、２５のうちの
他方の壁面２５に押圧されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. As shown in FIGS. 1 and 2, in the face milling machine 20 of the present embodiment, a tip mounting groove 22 is formed on the outer peripheral portion of the tool main body 21 so as to open on the distal end surface 21 a and the outer peripheral surface 21 b of the tool main body 21. Chip mounting groove 2
2, the cutting blade tip 23 is inserted, and the cutting blade tip 23 is
The wedge member 26 inserted from the outer peripheral side of the tool body 21 between the one of the wall surfaces 24, 25 facing the circumferential direction of the chip mounting groove 22 and the cutting edge chip 23, and forms the chip mounting groove 22. It is pressed against the other wall surface 25 of the wall surfaces 24 and 25 facing the circumferential direction.
【０００７】図１〜図４に示すように、切刃チップ２３
は、超硬合金やセラミックスなどの硬質材料を四角形平
板状に成形してなるもので、すくい面とされる上面２７
と、該上面２７に対して正角方向へ傾斜して逃げ面とさ
れる側面２８…と、上面２７に平行な下面２９とを有
し、上面２７と側面２８との交差稜線部には、上面２７
の角部Ｃを挟んで主切刃３０及び副切刃３１が交互に形
成され、また、側面２８は主切刃３０に連なる主逃げ面
３２と、副切刃３１に連なる副逃げ面３３とに分割され
ている。さらに、切刃チップ２３の上面２７及び下面２
９の中央部には、平面視四角形状をなす同形同大の凹部
３４、３５が形成されている。なお、図中符号３６は、
側面２８同士の交差稜線部の欠けを防止すべく形成され
たチャンファ面である。[0007] As shown in FIGS.
Is formed by molding a hard material such as cemented carbide or ceramics into a rectangular flat plate,
, A side surface 28 inclined in a regular angle direction with respect to the upper surface 27 and serving as a flank, and a lower surface 29 parallel to the upper surface 27. Upper surface 27
The main cutting edge 30 and the sub-cutting edge 31 are formed alternately with the corner C therebetween, and the side surface 28 has a main flank 32 connected to the main cutting edge 30 and a sub-flank 33 connected to the sub-cutting edge 31. Is divided into Furthermore, the upper surface 27 and the lower surface 2 of the cutting tip 23
At the center part of 9, recesses 34, 35 of the same shape and the same size forming a quadrangular shape in a plan view are formed. In addition, the code | symbol 36 in a figure is
This is a chamfered surface formed to prevent chipping of the intersection ridge portion between the side surfaces 28.
【０００８】図１〜図３に示すように、チップ取付溝２
２は、切刃チップ２３が挿入されるチップ挿入部４０
と、楔部材２６が挿入される楔挿入部４１とを有し、チ
ップ挿入部４０は、切刃チップ２３の上面２７と当接す
る上記壁面２５と、切刃チップ２３の隣接する二側面２
８と当接する位置決め基準面４２、４３とを備えてい
る。そして、壁面２５の中央部には当該壁面２５から突
出する断面四角形状の凸部４４が形成され、該凸部４４
の断面寸法及び壁面２５からの突出量は、切刃チップ２
３の凹部３４、３５の断面寸法及び深さよりも僅かに小
さく定められている。As shown in FIG. 1 to FIG.
2 is a tip insertion portion 40 into which the cutting blade tip 23 is inserted.
And a wedge insertion portion 41 into which the wedge member 26 is inserted. The tip insertion portion 40 includes the above-described wall surface 25 that comes into contact with the upper surface 27 of the cutting blade tip 23, and two adjacent side surfaces 2 of the cutting blade tip 23.
8 and positioning reference surfaces 42 and 43 which are in contact with each other. In the center of the wall surface 25, a convex portion 44 having a rectangular cross section protruding from the wall surface 25 is formed.
The cross-sectional dimension and the amount of protrusion from the wall surface 25 are
3 are slightly smaller than the cross-sectional dimensions and depth of the concave portions 34 and 35.
【０００９】一方、チップ取付溝２２の楔挿入部４１
は、楔部材２６の基準面２６ａと当接する上記壁面２４
と、この壁面２４と対向する逃がし面４５とを有し、壁
面２４はチップ挿入部４０の壁面２５と一定の間隔を保
ちつつ工具本体２１の後端側（図１における上方）へ伸
びている。また、壁面２４と逃がし面４５との間隔は楔
部材２６の基準面２６ａから押圧面２６ｂまでの距離よ
りも幾らか大きく形成されている。そして、楔部材２６
は、その基準面２６ａに対して押圧面２６ｂが小さい角
度（例えば１０゜ ）傾けられており、この押圧面２６ｂ
がチップ挿入部４０に挿入された切刃チップ２３の下面
２９と当接し、かつ、基準面２６ａが楔挿入部４１の壁
面２４と当接した状態で、当該楔部材２６が雌ねじ部２
６ｃにねじ込まれるクランプボルト４６によって楔挿入
部４２の底面４２ａ側へ引き寄せられることにより、切
刃チップ２３が壁面２５に向かって押し付けられる。以
下、クランプボルト４６の操作に伴う楔部材２６の移動
方向を楔部材２６の挿入方向という。On the other hand, the wedge insertion portion 41 of the chip mounting groove 22
Is the wall surface 24 abutting against the reference surface 26a of the wedge member 26.
And a relief surface 45 facing the wall surface 24. The wall surface 24 extends toward the rear end side (upward in FIG. 1) of the tool main body 21 while keeping a constant distance from the wall surface 25 of the chip insertion portion 40. . The distance between the wall surface 24 and the relief surface 45 is formed to be somewhat larger than the distance from the reference surface 26a of the wedge member 26 to the pressing surface 26b. And the wedge member 26
The pressing surface 26b is inclined at a small angle (for example, 10 °) with respect to the reference surface 26a.
Is in contact with the lower surface 29 of the cutting blade tip 23 inserted in the tip insertion portion 40 and the reference surface 26a is in contact with the wall surface 24 of the wedge insertion portion 41, and the wedge member 26 is
The cutting tip 23 is pressed against the wall surface 25 by being pulled toward the bottom surface 42a of the wedge insertion portion 42 by the clamp bolt 46 screwed into the 6c. Hereinafter, the moving direction of the wedge member 26 accompanying the operation of the clamp bolt 46 is referred to as the insertion direction of the wedge member 26.
【００１０】また、楔部材２６は、楔挿入部４１の壁面
２４の長手方向の全長よりも短尺に形成され、これによ
り、楔部材２６は、楔挿入部４１内を壁面２４に沿って
上下に移動可能とされている。さらに、楔挿入部４１の
底面４１ａ側には、チップ取付溝２２の延在方向（即
ち、図１矢印Ａ、Ｂ方向）に延在する図２のボルト取付
溝４７が形成されている。図１、図２及び図５に示すよ
うに、ボルト取付溝４７は、拡大部４８と、この拡大部
４８と底面４１ａとの間に配される狭窄部４９とを有
し、狭窄部４９が底面４１ａに開口する長穴状に形成さ
れるのに対して、拡大部４８は断面円形でかつ狭窄部４
９の幅よりも内径が大きな穴状に形成され、該拡大部４
８の一端は工具本体２１の先端面２１ａに開口せしめら
れている。The wedge member 26 is formed to be shorter than the entire length of the wall surface 24 of the wedge insertion portion 41 in the longitudinal direction, whereby the wedge member 26 moves vertically within the wedge insertion portion 41 along the wall surface 24. It is possible to move. Further, the extending direction of the chip mounting groove 22 (immediately
That is, the bolt mounting groove 47 of FIG. 2 extending in the directions of arrows A and B in FIG. 1 is formed. As shown in FIGS. 1, 2 and 5, a bolt attachment groove 47 has a expansion most 48, and a narrowed portion 49 that is disposed between the enlarged portion 48 and the bottom surface 41a, constriction 49 Is formed in a long hole shape opening in the bottom surface 41a, whereas the enlarged portion 48 has a circular cross section and the constricted portion 4 is formed.
9 is formed in a hole shape having an inner diameter larger than the width of the enlarged portion 4.
One end of 8 is opened at the tip end surface 21 a of the tool body 21.
【００１１】このボルト取付溝４７の拡大部４８には、
ナット５０が該拡大部４８の長手方向であるチップ取付
溝２２の延在方向（即ち、図１矢印Ａ、Ｂ方向）に沿っ
て移動自在に挿入されている。図６〜図８により詳細に
示すように、ナット５０は外観円柱状に形成され、その
軸方向中心位置に当該ナット５０を径方向に貫通する雌
ねじ部５１が形成されるとともに、一端面に径方向へ延
びる位置決め溝５２が形成されている。また、ナット５
０の直径はボルト取付溝４７の拡大部４８の内径よりも
僅かに小さく定められている。そして、ナット５０は、
ボルト取付溝４７の拡大部４８に対して工具本体２１の
先端面２１ａ側から挿入され、その雌ねじ部５１が狭窄
部４９を介して楔挿入部４１の底面４１ａに臨む位置に
おかれることにより、クランプボルト４６と螺合可能と
される。なお、このナット５０の拡大部４８への挿入時
の向きは、位置決め溝５２を有する端面が工具本体２１
の先端面２１ａ側を向くように定められる。これは、位
置決め溝５２にマイナスドライバ等をはめ込んでナット
５０を回転させることにより、雌ねじ部５１の周方向の
位置を調整するためである。The enlarged portion 48 of the bolt mounting groove 47 includes
Tip mounting where the nut 50 is in the longitudinal direction of the enlarged portion 48
The groove 22 is movably inserted in the extending direction of the groove 22 (that is, the direction of arrows A and B in FIG. 1) . As shown in more detail in FIGS. 6 to 8, the nut 50 is formed in an external cylindrical shape, and a female screw portion 51 that penetrates the nut 50 in the radial direction is formed at an axial center position thereof, and a diameter is formed on one end surface. A positioning groove 52 extending in the direction is formed. Also, nut 5
The diameter of 0 is set slightly smaller than the inner diameter of the enlarged portion 48 of the bolt mounting groove 47. And the nut 50 is
By being inserted into the enlarged portion 48 of the bolt mounting groove 47 from the tip end surface 21a side of the tool body 21, the female screw portion 51 is located at a position facing the bottom surface 41a of the wedge insertion portion 41 via the narrowed portion 49, It can be screwed with the clamp bolt 46. The orientation of the nut 50 when inserted into the enlarged portion 48 is such that the end face having the positioning groove 52 is
Is determined so as to face the distal end surface 21a side of This is for adjusting the circumferential position of the female screw portion 51 by inserting a flathead screwdriver or the like into the positioning groove 52 and rotating the nut 50.
【００１２】さらに、図１及び図２に示すように、上記
クランプボルト４６は、ナット５０の雌ねじ部５１と螺
合する第１の雄ねじ部５３と、楔部材２６の雌ねじ部２
６ｃと螺合する第２の雄ねじ部５４と、これら雄ねじ部
５３、５４とを連結する首部５５とが同軸的に配列され
てなるもので、第１の雄ねじ部５３の捩れ方向に対して
第２の雄ねじ部の捩れ方向は逆方向に定められている。
このようにクランプボルト４６の第１、第２の雄ねじ部
５３、５４の捩れ方向が互いに反対方向とされているた
め、図９、図１０に示すように、第１の雄ねじ部５３を
ナット５０の雌ねじ部５１に螺合させる一方で、第２の
雄ねじ部５４を楔部材２６の雌ねじ部２６ｃに螺合さ
せ、この状態でクランプボルト４６を軸線ｘの回りにい
ずれか一方へ回転させることにより、楔部材２６及びナ
ット５０を互いに引き寄せて楔部材２６で切刃チップ２
３を壁面２５に押圧し（図９）、あるいは楔部材２６及
びナット５０を互いに離間させて楔部材２６による切刃
チップ２３の押圧を解除し（図１０）、さらに図１０と
同一方向へ回転を続けることで楔部材２６をチップ取付
溝２２から抜き出す（図１１）ことができる。なお、図
示の例では第１の雄ねじ部５３が右ねじに、第２の雄ね
じ部５４が左ねじとされている。そして、第２の雄ねじ
部５４の端面側には当該クランプボルト４６を操作する
レンチ（図示略）と嵌合するレンチ穴５５が形成されて
いる。Further, as shown in FIGS. 1 and 2, the clamp bolt 46 includes a first male screw portion 53 screwed with a female screw portion 51 of a nut 50, and a female screw portion 2 of the wedge member 26.
6c, and a neck portion 55 connecting the male screw portions 53 and 54 are coaxially arranged. The second male screw portion 54 is screwed with the first male screw portion 53 in the torsion direction of the first male screw portion 53. The twisting direction of the second male screw portion is determined in the opposite direction.
As described above, the first and second external thread portions 53 and 54 of the clamp bolt 46 are twisted in opposite directions, so that the first external thread portion 53 is connected to the nut 50 as shown in FIGS. While screwing the second male screw portion 54 into the female screw portion 26c of the wedge member 26, and rotating the clamp bolt 46 around the axis x in this state. , The wedge member 26 and the nut 50 are pulled toward each other, and the wedge member 26
3 is pressed against the wall surface 25 (FIG. 9), or the wedge member 26 and the nut 50 are separated from each other to release the pressing of the cutting blade tip 23 by the wedge member 26 (FIG. 10), and further rotated in the same direction as FIG. Is continued, the wedge member 26 can be pulled out from the chip mounting groove 22 (FIG. 11). In the illustrated example, the first external thread 53 is a right-hand thread, and the second external thread 54 is a left-hand thread. A wrench hole 55 is formed on the end face side of the second male screw portion 54 for fitting with a wrench (not shown) for operating the clamp bolt 46.
【００１３】ここで、楔部材２６及びクランプボルト４
６の移動量は、切刃チップ２３の大きさに応じて適宜定
められるが、図１に示すように切刃チップ２３の下面２
９と楔部材２６の押圧面２６ｂとを対向させた状態を基
準としたときに、楔部材２６がチップ取付溝２２の上方
へ切刃チップ２３の一辺の長さよりも大きく移動できる
ように定めておく必要がある。Here, the wedge member 26 and the clamp bolt 4
The moving amount of the cutting edge 6 is appropriately determined according to the size of the cutting edge tip 23, but as shown in FIG.
With reference to a state in which the pressing surface 26b of the wedge member 9 and the pressing surface 9 are opposed to each other, the wedge member 26 is determined so as to be able to move upward of the chip mounting groove 22 by more than one side of the cutting edge chip 23. Need to be kept.
【００１４】次に、以上のように構成された正面フライ
ス２０の作用を説明する。本実施例の正面フライス２０
において、切刃チップ２３の着脱を行うには、クランプ
ボルト４６を緩めて楔部材２６による切刃チップ２３の
押圧を解除し、続いて楔部材２６をクランプボルト４６
とともにチップ取付溝２２の延在方向（即ち図１矢印
Ａ、Ｂ方向）の図１紙面上方（即ち図１矢印Ａ方向）へ
移動させて押圧面２６ｂを切刃チップ２３の下面２９と
対向する位置から側方へ逃す。これにより切刃チップ２
３の下面２９と直交する方向への拘束が解除されるの
で、切刃チップ２３を凹部３４がチップ取付溝２２の壁
面２５の凸部４４から外れるまで壁面２４側へ移動さ
せ、この後工具本体２１の径方向または軸線方向へ移動
させることで切刃チップ２３をチップ取付溝２２から取
り外すことができる。Next, the operation of the face mill 20 configured as described above will be described. Face mill 20 of this embodiment
In order to attach and detach the cutting blade tip 23, the clamp bolt 46 is loosened to release the pressing of the cutting blade tip 23 by the wedge member 26, and then the wedge member 26 is
And the extending direction of the chip mounting groove 22 (that is, the arrow in FIG. 1).
1 (ie, in the direction of arrow A in FIG. 1) to move the pressing surface 26 b sideways from the position facing the lower surface 29 of the cutting tip 23. Thereby, the cutting blade tip 2
3 is released in the direction perpendicular to the lower surface 29, the cutting edge tip 23 is moved toward the wall surface 24 until the concave portion 34 is disengaged from the convex portion 44 of the wall surface 25 of the chip mounting groove 22, and then the tool body By moving the cutting edge tip 21 in the radial direction or the axial direction, the cutting edge tip 23 can be removed from the tip mounting groove 22.
【００１５】切刃チップ２３を取り付ける場合には、予
め楔部材２６をチップ取付溝２２の上方へ移動させてお
いた上で、切刃チップ２３をチップ取付溝２２のチップ
挿入部４０へ挿入して凹部３４を凸部４４と嵌合させ、
この後、楔部材２６を壁面２４に沿って工具本体２１の
先端側へ移動させてその押圧面２６ｂを切刃チップ２３
の下面２９と対向させ、さらにクランプボルト４６を回
転させて楔部材２６を挿入方向に沿って楔挿入部４１の
底面４１ａ側へ引き込み、これにより押圧面２６ｂによ
って切刃チップ２３を壁面２５へ押し付ける。そして、
以上の手順で切刃チップ２３が取り付けられることによ
り、当該切刃チップ２３の凹部３４が凸部４４と嵌合し
て位置決め基準面４２、４３から離れる方向への移動が
拘束される。従って、工具本体２１を高速回転させても
切刃チップ２３が飛び出すことはない。When mounting the cutting edge chip 23, the wedge member 26 is previously moved above the chip mounting groove 22, and then the cutting edge chip 23 is inserted into the chip insertion portion 40 of the chip mounting groove 22. To fit the concave portion 34 with the convex portion 44,
Thereafter, the wedge member 26 is moved to the tip end side of the tool body 21 along the wall surface 24, and the pressing surface 26b is moved to the cutting edge tip 23.
The wedge member 26 is pulled toward the bottom surface 41a of the wedge insertion portion 41 in the insertion direction by rotating the clamp bolt 46, thereby pressing the cutting edge tip 23 against the wall surface 25 by the pressing surface 26b. . And
By attaching the cutting edge tip 23 in the above procedure, the concave portion 34 of the cutting edge tip 23 is fitted with the convex portion 44, and the movement in the direction away from the positioning reference surfaces 42, 43 is restrained. Therefore, even when the tool main body 21 is rotated at a high speed, the cutting blade tip 23 does not fly out.
【００１６】以上述べたように、本実施例の正面フライ
ス２０によれば、楔部材２６が自身の挿入方向と交差す
る方向でかつ壁面２５に沿う方向へ移動可能とされてい
るので、切刃チップ２３の着脱作業を行う際において
は、楔部材２６を切刃チップ２３と対向する位置から移
動させるだけで切刃チップ２３を着脱でき、しかも楔部
材２６を移動させるためには、楔部材２６の押圧面２６
ｂと切刃チップ２３の下面２９とを僅かに離間させるだ
けでよいから、クランプボルト４６の操作量も少なくて
足りる。この点、従来通り楔部材２６を移動不可能とす
れば、切刃チップ２３を取り出すには、クランプボルト
４６を相当数回転させて図１１に示すように楔部材２６
の押圧面２６ｂと切刃チップ２３の下面２９との間に凸
部４４の突出量を越える隙間を設ける必要があり、作業
に要する手間が著しく増加する。以上より本実施例の正
面フライス２０によれば、従来に比して切刃チップ２３
の着脱作業を容易かつ迅速になし得ることが明らかであ
る。As described above, according to the face milling machine 20 of the present embodiment, the wedge member 26 is movable in the direction intersecting the insertion direction of the wedge member 26 and in the direction along the wall surface 25. When performing the attaching / detaching operation of the tip 23, the cutting blade tip 23 can be attached / detached only by moving the wedge member 26 from a position facing the cutting blade tip 23. In order to move the wedge member 26, the wedge member 26 is required. Pressing surface 26
Since it is only necessary to slightly separate b from the lower surface 29 of the cutting tip 23, the amount of operation of the clamp bolt 46 is small. In this regard, if the wedge member 26 cannot be moved as in the related art, in order to take out the cutting edge tip 23, the clamp bolt 46 is rotated a considerable number of times, and as shown in FIG.
It is necessary to provide a gap between the pressing surface 26b of the cutting blade tip 23 and the lower surface 29 of the cutting blade tip 23, the clearance exceeding the amount of projection of the convex portion 44, and the labor required for the work is significantly increased. As described above, according to the face mill 20 of the present embodiment, the cutting tip 23
It is clear that the attaching and detaching work can be performed easily and quickly.
【００１７】そして、ボルト取付溝４７の拡大部４８を
断面円形の穴状に形成しているので、ドリル等の周知の
穴あけ工具によって拡大部４８を容易に形成でき、工具
本体２１の製造コストが低減される。さらに、拡大部４
８の内壁が一様に湾曲して応力集中が生じにくい形状で
あるため、工具本体２１の変形や破損防止にも効果的で
ある。Since the enlarged portion 48 of the bolt mounting groove 47 is formed in a circular shape with a circular cross section, the enlarged portion 48 can be easily formed by a known drilling tool such as a drill, and the manufacturing cost of the tool body 21 is reduced. Reduced. Furthermore, the enlargement section 4
Since the inner wall 8 has a shape in which the inner wall is uniformly curved and stress concentration hardly occurs, it is also effective in preventing deformation and breakage of the tool body 21.
【００１８】なお、本実施例は本考案のあくまで一例を
示すに過ぎないものであり、本考案が図示の態様に限定
されないのは勿論である。例えば、切刃チップ２３の飛
び出しを防止する凹部３４及び凸部４４は逆に設けるこ
ともできる。また、切刃チップ２３の取付構造について
は、図１２に示すように、切刃チップ２３の上面２７を
楔部材２６によって押さえつける構成の切削工具でも同
等の効果を得ることができる。ここで、図１２の例で
は、工具本体２１のチップ取付溝２２の周方向を向く壁
面２４、２５のうち、切刃チップ２３と当接する壁面２
５を、チップ取付溝２２内に装着される保持具６０の壁
面６１によって構成しているが、保持具６０を省略して
切刃チップ２３の下面２９を工具本体２１に直接当接さ
せてもよいことは勿論である。なお、この場合の保持具
６０については、切刃チップ２３を受け入れる溝が形成
されたもの、及び単なる平板状に形成されたもののいず
れも使用可能である。The present embodiment is merely an example of the present invention, and the present invention is not limited to the illustrated embodiment. For example, the concave portion 34 and the convex portion 44 for preventing the cutting edge tip 23 from jumping out can be provided in reverse. As for the mounting structure of the cutting edge chip 23, as shown in FIG. 12, the same effect can be obtained even with a cutting tool configured to press the upper surface 27 of the cutting edge chip 23 with the wedge member 26. Here, in the example of FIG. 12, of the wall surfaces 24 and 25 facing the circumferential direction of the chip mounting groove 22 of the tool main body 21, the wall surface 2 that contacts the cutting blade tip 23.
5 is constituted by the wall surface 61 of the holder 60 mounted in the chip mounting groove 22, but the holder 60 may be omitted and the lower surface 29 of the cutting edge tip 23 may directly contact the tool body 21. Of course it is good. In this case, as the holder 60 in this case, either one having a groove for receiving the cutting blade tip 23 or one having a simple flat plate shape can be used.
【００１９】[0019]
【考案の効果】以上説明したように、この考案によれ
ば、楔部材をチップ取付溝の延在方向へ移動させること
により、切刃チップとチップ取付溝の壁面との間に切刃
チップの飛び出しを防止する凸部及び凹部が形成されて
いても切刃チップを容易かつ迅速に着脱でき、これによ
り切刃チップの着脱作業に要する時間、コストが削減さ
れて、特に多数の切刃チップが装着される正面フライス
やエンドミルに適用した場合に著しい作業効率の向上が
実現される。しかも、ナットを受け入れるボルト取付溝
の拡大部が断面円形であるため、ドリル等の穴あけ工具
によって容易に形成でき、これによって工具本体の製造
コストの低減を図ることができる。さらに、ボルト取付
溝の拡大部の内壁が一様に湾曲しているためにクランプ
ボルトを締め付けた場合でも応力集中が生じにくく、こ
れによりクランプボルトの締め付けに伴う工具本体の変
形や破損も防止される。As described above, according to the present invention, by moving the wedge member in the extending direction of the chip mounting groove, the wedge member is moved between the cutting edge chip and the wall surface of the chip mounting groove. Even if the projections and recesses for preventing protrusion are formed, the cutting edge tip can be easily and quickly attached and detached, thereby reducing the time and cost required for the operation of attaching and detaching the cutting edge tip, and particularly, a large number of cutting edge tips are provided. When applied to a face mill or end mill to be mounted, remarkable improvement in work efficiency is realized. In addition, since the enlarged portion of the bolt mounting groove for receiving the nut has a circular cross section, it can be easily formed by a drilling tool such as a drill, thereby reducing the manufacturing cost of the tool body. Furthermore, since the inner wall of the enlarged portion of the bolt mounting groove is uniformly curved, even when the clamp bolt is tightened, stress concentration does not easily occur, thereby preventing deformation and breakage of the tool body due to tightening of the clamp bolt. You.
【図１】本考案の一実施例における切刃チップ周囲の構
成を拡大して示す側面図である。FIG. 1 is an enlarged side view showing a configuration around a cutting edge tip according to an embodiment of the present invention.
【図２】図１の切刃チップ周囲の構成を同図のII方向か
らみた状態を一部断面視して示す図である。FIG. 2 is a view showing a configuration around a cutting edge tip of FIG. 1 in a partially sectional view when viewed from a direction II in FIG. 1;
【図３】図１のIII−III線における断面図である。FIG. 3 is a sectional view taken along line III-III in FIG.
【図４】図３のIV−IV線における断面図である。FIG. 4 is a sectional view taken along line IV-IV in FIG.
【図５】図１に示すチップ取付溝から楔部材を取り除い
た状態を示す図である。FIG. 5 is a view showing a state where a wedge member is removed from the chip mounting groove shown in FIG. 1;
【図６】図５に示すナットの正面図である。FIG. 6 is a front view of the nut shown in FIG. 5;
【図７】図６のVII方向からの矢視図である。FIG. 7 is a view as seen from the direction of the arrow VII in FIG. 6;
【図８】図７のVIII−VIII線における断面図である。FIG. 8 is a sectional view taken along line VIII-VIII in FIG. 7;
【図９】クランプボルトによって楔部材を締め付けた状
態を示す断面図である。FIG. 9 is a cross-sectional view showing a state where a wedge member is tightened by a clamp bolt.
【図１０】図９に示す状態からクランプボルトを回転さ
せて楔部材によるクランプ力を緩和させた状態を示す断
面図である。10 is a cross-sectional view showing a state in which the clamp bolt is rotated from the state shown in FIG. 9 to reduce the clamping force by the wedge member.
【図１１】図１０に示す状態からさらにクランプボルト
を回転させて楔部材を取り出した状態を示す断面図であ
る。11 is a sectional view showing a state in which the clamp bolt is further rotated from the state shown in FIG. 10 and the wedge member is taken out.
【図１２】図２の変形例を示す図である。FIG. 12 is a diagram showing a modification of FIG. 2;
【図１３】従来の正面フライスの外周部の一例を示す図
である。FIG. 13 is a diagram showing an example of an outer peripheral portion of a conventional face milling machine.
【図１４】図１３に示す正面フライスの切刃チップ周囲
の構成を示す断面図である。FIG. 14 is a sectional view showing a configuration around a cutting edge tip of the face milling machine shown in FIG.
２０ 正面フライス ２１ 工具本体 ２２ チップ取付溝 ２３ 切刃チップ ２４，２５ チップ取付溝の周方向を向く壁面 ２６ 楔部材 ４ １ａ ボルト取付溝の底面 ４６ クランプボルト ４７ ボルト取付溝 ４８ 拡大部４９ 狭窄部 ５０ ナット ６０ 保持具20 face milling 21 the tool body 22 Chip mounting groove 23 cutting inserts 24, 25 chip mounting groove in the circumferential direction toward the wall surface 26 the wedge member 4 1a bolt mounting groove of the bottom surface 46 clamp bolt 47 bolt mounting groove 48 enlarged portion 49 narrowed portion 50 Nut 60 Holder
───────────────────────────────────────────────────── フロントページの続き (72)考案者 林崎 弘章 茨城県結城郡石下町大字古間木1511番地 三菱マテリアル株式会社 筑波製作所 内 (56)参考文献 実開 昭62−68712（ＪＰ，Ｕ) 実開 昭60−42502（ＪＰ，Ｕ) 実開 平１−138507（ＪＰ，Ｕ) ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Hiroaki Hayashizaki 1511 Furamagi, Ishishita-cho, Yuki-gun, Ibaraki Pref. 60-60502 (JP, U) Japanese Utility Model 1-138507 (JP, U)
Claims (2)
置され、該チップ取付溝内の一方の壁面に接する切刃チ
ップと、該切刃チップと前記チップ取付溝の他方の壁面
との間に配置され、該チップ取付溝の底面に向かう挿入
方向に挿入されて前記切刃チップを前記一方の壁面に押
圧する楔部材とを備え、前記一方の壁面と、当該一方の
壁面に接する前記切刃チップの面とは、そのいずれか一
方に凸部を有し、そのいずれか他方に前記凸部に嵌合す
る凹部を有し、該凹部と前記凸部との嵌合により前記切
刃チップが係止される切削工具であって、前記チップ取付溝は、その延在方向に前記楔部材を移動
させることで前記切刃チップに対して当該楔部材が接離
自在となるように形成され、 前記 チップ取付溝の底面には、該チップ取付溝の延在方
向に延在するボルト取付溝が形成され、 このボルト取付溝は、拡大部と、該拡大部と前記チップ
取付溝との間に配される狭窄部とを有し、 このボルト取付溝の前記拡大部には、ナットが、前記狭
窄部により前記チップ取付溝側への移動を阻止された状
態で、当該ボルト取付溝の延在方向に移動自在に配置さ
れ、 このナットには、上記楔部材に取り付けられたクランプ
ボルトが螺合され、 当該クランプボルトと前記ナット
は、前記楔部材を前記ボルト取付溝の底面に向けて締め
付け自在、且つ前記楔部材とともに前記延在方向に移動
自在となるように締め付け解除自在に設けられているこ
とを特徴とする切削工具。1. An arrangement in a chip mounting groove formed in a tool body.
And a cutting edge that contacts the one wall surface in the chip mounting groove.
And the other wall surface of the cutting edge tip and the tip mounting groove.
And inserted toward the bottom surface of the chip mounting groove.
Direction and push the cutting edge tip against the one wall surface.
A wedge member for pressing, the one wall surface and the one wall surface
The surface of the cutting edge tip that is in contact with the wall surface
One of which has a convex portion, and the other of which has a convex portion.
A concave portion, and the cut is formed by fitting the concave portion and the convex portion.
A cutting tool edge tip Ru locked, the tip mounting groove, moving the wedge member in the extending direction thereof
The wedge member comes into contact with and separates from the cutting edge tip.
It is formed so as to be freely, on a bottom surface of the chip mounting groove, extending in the chip mounting groove Zaikata
A bolt mounting groove extending in the direction is formed, and the bolt mounting groove is formed with an enlarged portion, the enlarged portion, and the tip.
And a constriction arranged between the mounting groove, the said enlarged portion of the bolt mounting groove nut, the narrow
The movement to the tip mounting groove side is blocked by the constricted portion.
In state, movably disposed of <br/> is in the extended direction of the bolt mounting groove, this nut, clamp <br/> bolt attached to the wedge member is screwed, the clamp bolt And the nut
Tighten the wedge member toward the bottom of the bolt mounting groove.
Attachable and move in the extending direction with the wedge member
Cutting tool characterized that you have provided releasably clamped so as to be freely.
刃チップが押圧される一方の壁面は、上記チップ取付溝
内に装着される保持具の壁面によって構成されているこ
とを特徴とする請求項１記載の切削工具。Wherein among the wall surfaces of the chip mounting groove, the wall surface of the hand in which the cutting insert is pressed, characterized in that it is constituted by a wall surface of the holder to be mounted on the chip mounting groove The cutting tool according to claim 1, wherein
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991092935U JP2526213Y2 (en) | 1991-11-13 | 1991-11-13 | Cutting tools |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1991092935U JP2526213Y2 (en) | 1991-11-13 | 1991-11-13 | Cutting tools |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0541621U JPH0541621U (en) | 1993-06-08 |
| JP2526213Y2 true JP2526213Y2 (en) | 1997-02-19 |
Family
ID=14068342
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1991092935U Expired - Fee Related JP2526213Y2 (en) | 1991-11-13 | 1991-11-13 | Cutting tools |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2526213Y2 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IL182078A (en) * | 2007-03-20 | 2011-09-27 | Iscar Ltd | System for attaching a cutting member to a cutter |
| EP3025814B1 (en) * | 2014-11-28 | 2017-08-02 | Sandvik Intellectual Property AB | A milling insert and a milling tool |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6042502U (en) * | 1983-08-31 | 1985-03-26 | 池松 康夫 | Cutting tools |
| JPS6268712U (en) * | 1985-10-16 | 1987-04-30 | ||
| JPH01138507U (en) * | 1988-03-09 | 1989-09-21 |
-
1991
- 1991-11-13 JP JP1991092935U patent/JP2526213Y2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0541621U (en) | 1993-06-08 |
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| Date | Code | Title | Description |
|---|---|---|---|
| A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 19961001 |
|
| LAPS | Cancellation because of no payment of annual fees |