JP2841974B2 - Cutting tools - Google Patents

Cutting tools

Info

Publication number
JP2841974B2
JP2841974B2 JP29177691A JP29177691A JP2841974B2 JP 2841974 B2 JP2841974 B2 JP 2841974B2 JP 29177691 A JP29177691 A JP 29177691A JP 29177691 A JP29177691 A JP 29177691A JP 2841974 B2 JP2841974 B2 JP 2841974B2
Authority
JP
Japan
Prior art keywords
mounting groove
tip
wedge member
cutting edge
bolt
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
Application number
JP29177691A
Other languages
Japanese (ja)
Other versions
JPH05138426A (en
Inventor
辰夫 新井
貴宣 斉藤
弘章 林崎
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Materials Corp
Original Assignee
Mitsubishi Materials Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Materials Corp filed Critical Mitsubishi Materials Corp
Priority to JP29177691A priority Critical patent/JP2841974B2/en
Publication of JPH05138426A publication Critical patent/JPH05138426A/en
Application granted granted Critical
Publication of JP2841974B2 publication Critical patent/JP2841974B2/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Description

【発明の詳細な説明】DETAILED DESCRIPTION OF THE INVENTION

【0001】[0001]

【産業上の利用分野】この発明は、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9及
び図10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3a
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, a face milling machine 1 as shown in FIGS. 9 and 10 has been 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. And the wall surface 3a facing the circumferential direction of the chip mounting groove 3.
When the pin 7 is driven into and the tip of the pin is protruded, a convex portion 8 is formed on the wall surface 3a, while the convex portion 8 is formed on the lower surface 9 of the cutting edge chip 4 which contacts 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]

【発明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9及び図10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。この発明は、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 for preventing the cutting edge tip 4 from jumping out, the workability in 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. 9 and 10, since the protrusion 8 protrudes from the wall surface 3 a of the chip mounting groove 3, the wedge member is required to attach and detach the cutting edge chip 4 to and from the chip mounting groove 3. It is necessary to provide a gap between the side surface 6a of the blade 6 and the wall surface 3a of the tip mounting groove 3 in a manner exceeding the sum of the thickness of the cutting edge tip 4 and the projection of the projection 8. 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
にこの発明の切削工具は、工具本体に形成されたチップ
取付溝に切刃チップが挿入され、この切刃チップが、上
記チップ取付溝の周方向を向く壁面の一方と当該切刃チ
ップとの間に挿入される楔部材によって上記チップ取付
溝の周方向を向く壁面の他方に押圧されてなる切削工具
において、上記楔部材を、その挿入方向と交差する方向
でかつ上記チップ取付溝の周方向を向く壁面のいずれか
一方に沿う方向へ移動可能に設けたものである。ここ
で、上記チップ取付溝の周方向を向く壁面のうち上記切
刃チップが押圧される他方の壁面は、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が
含まれる。そして、楔部材の取付構造としては種々の構
成が用いられるが、その一例としては、上記チップ取付
溝の底面側に上記楔部材の移動方向と同一方向へ延在し
かつ内部が拡幅するボルト取付溝を形成し、このボルト
取付溝に、一端側に雄ねじ部が、他端側に頭部が設けら
れたクランプボルトを、上記頭部をボルト取付溝の内部
に挿入させ、かつ上記雄ねじ部を当該ボルト取付溝の開
口端から突出させて取り付け、このクランプボルトの上
記雄ねじ部と上記楔部材の雌ねじ部とを螺合させること
により上記楔部材を上記チップ取付溝内に取り付けると
良い。この場合、上記クランプボルトの他端側に、上記
頭部に代えて上記雄ねじ部と逆方向へ捩れる副雄ねじ部
を形成し、かつ、上記ボルト取付溝には上記クランプボ
ルトに代えてナットを挿入し、このナットと上記クラン
プボルトの上記副雄ねじ部とを螺合させても良い。な
お、切刃チップの飛び出し防止構造については、上記チ
ップ取付溝の周方向を向く壁面のうち上記切刃チップと
当接する他方の壁面と、上記切刃チップとの間に、上記
チップ取付溝の周方向を向く壁面と交差する方向へ突出
する凸部及び該凸部と嵌合する凹部を形成すれば良い。
In order to solve the above-mentioned problems, a cutting tool according to the present invention has a cutting edge chip inserted into a chip mounting groove formed in a tool body, and the cutting edge chip is inserted into the chip mounting groove. A cutting tool pressed by a wedge member inserted between one of the circumferentially facing wall surfaces and the cutting edge tip against the other of the circumferentially facing wall surfaces of the chip mounting groove, wherein the wedge member includes The chip mounting groove is provided so as to be movable in a direction intersecting the insertion direction and along one of the wall surfaces facing the circumferential direction of the chip mounting groove. Here, the other wall surface of the tip mounting groove, which faces the circumferential direction, on which the cutting edge tip is pressed may be constituted by a wall surface of a holder mounted in the chip mounting groove. Various configurations are used for the mounting structure of the wedge member. One example is a bolt mounting that extends in the same direction as the moving direction of the wedge member on the bottom side of the chip mounting groove and has an inner portion that is widened. A groove is formed, a male screw portion on one end side of the bolt mounting groove, a clamp bolt having a head provided on the other end side, the head is inserted into the bolt mounting groove, and the male screw portion is inserted. It is preferable that the wedge member is mounted in the chip mounting groove by projecting from the opening end of the bolt mounting groove and mounting the male screw portion of the clamp bolt and the female screw portion of the wedge member. In this case, on the other end side of the clamp bolt, a sub-male thread portion twisted in the opposite direction to the male thread portion is formed instead of the head portion, and a nut is provided in the bolt mounting groove instead of the clamp bolt. Alternatively, the nut may be screwed together with the auxiliary male screw portion of the clamp bolt. In addition, regarding the structure for preventing the cutting edge chip from popping out, the other wall surface of the chip mounting groove that faces the circumferential direction of the chip mounting groove and the other wall surface that abuts the cutting blade chip, and the chip mounting groove, What is necessary is just to form the convex part which protrudes in the direction which intersects the wall surface which faces the circumferential direction, and the recessed part which fits this convex part.

【0005】[0005]

【作用】上記構成によれば、楔部材による切刃チップの
周方向への押圧を解除した上で、楔部材を、当該楔部材
の挿入方向と交差する方向でかつチップ取付溝の周方向
を向く壁面に沿う方向へ移動させることにより、楔部材
を切刃チップの周方向を向く表面の延長上から逃して当
該切刃チップを周方向へ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周方向
を向く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に大きく移動させる手間を
かけることなく切刃チップの着脱を行うことができる。
According to the above construction, after the pressing of the cutting blade tip in the circumferential direction by the wedge member is released, the wedge member is moved in the direction intersecting the insertion direction of the wedge member and the circumferential direction of the chip mounting groove. By moving the wedge member in the direction along the facing wall surface, the wedge member can be escaped from the extension of the surface of the cutting edge tip facing in the circumferential direction, and the cutting edge tip can be moved in the circumferential direction. This makes it possible to attach and detach the protrusions and recesses formed between the cutting edge tip and the wall surface of the tip mounting groove facing in the circumferential direction, without having to move the wedge member largely in the insertion direction. Can be attached and detached.

【0006】[0006]

【実施例】以下、図1〜図4を参照して、本発明の一実
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22
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 22
Is inserted into 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. Of the chip mounting groove 22 is pressed against the other wall surface 25 of the chip mounting groove 22 by the wedge member 26 inserted from the outer peripheral side of the chip mounting groove 22.

【0007】図3及び図4により詳細に示すように、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3
1が交互に形成され、側面28の一端側には副切刃31
に連なる副逃げ面32が形成されている。さらに、切刃
チップ23の上面27及び下面29の中央部には、平面
視四角形状をなす同形同大の凹部33、34が形成され
ている。
As shown in more detail in FIGS. 3 and 4, the cutting edge tip 23 is formed by molding a hard material such as cemented carbide or ceramic into a rectangular flat plate, and has an upper surface 27 which is a rake face and an upper face 27 which is a rake face. , 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. The main cutting edge 30 and the sub cutting edge 3 with the corner C of 27 interposed therebetween.
1 are formed alternately, and a sub cutting edge 31 is provided at one end of the side surface 28.
Is formed. Further, in the center of the upper surface 27 and the lower surface 29 of the cutting blade tip 23, recesses 33 and 34 having the same shape and the same size and having a quadrangular shape in plan view are formed.

【0008】また、図1〜図3に示すように、チップ取
付溝22は、切刃チップ23が挿入されるチップ挿入部
35と、楔部材26が挿入される楔挿入部36とを有
し、チップ挿入部35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28と当接する位置決め基準面37、38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39が形成され、該凸部
39の断面寸法及び壁面25からの突出量は、切刃チッ
プ23の凹部33、34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 FIGS. 1 to 3, the tip mounting groove 22 has a tip insertion portion 35 into which the cutting tip 23 is inserted, and a wedge insertion portion 36 into which the wedge member 26 is inserted. The tip insertion portion 35 includes the wall surface 25 that comes into contact with the upper surface 27 of the cutting blade tip 23, and positioning reference surfaces 37 and 38 that contact two adjacent side surfaces 28 of the cutting blade tip 23. In the center of the wall surface 25, a convex portion 39 having a rectangular cross section projecting from the wall surface 25 is formed, and the cross-sectional dimension of the convex portion 39 and the protrusion amount from the wall surface 25 are determined by the concave portion 33 of the cutting blade tip 23, 34 is set slightly smaller than the cross-sectional dimension and depth.

【0009】一方、チップ取付溝22の楔挿入部36
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40とを有し、壁
面24はチップ挿入部35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40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35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36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41によって楔挿入
部36の底面36a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41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 36 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 40 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 maintaining a constant interval with the wall surface 25 of the chip insertion portion 35. . The distance between the wall surface 24 and the relief surface 40 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 35 and the reference surface 26a is in contact with the wall surface 24 of the wedge insertion portion 36, and the wedge member 26 is
The cutting tip 23 is pressed against the wall surface 25 by being drawn toward the bottom surface 36a of the wedge insertion portion 36 by the clamp bolt 41 screwed into the 6c. Hereinafter, the moving direction of the wedge member 26 accompanying the operation of the clamp bolt 41 is referred to as the insertion direction of the wedge member 26.

【0010】また、楔部材26は、楔挿入部36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、壁面24に沿って楔挿入部36内を
移動可能とされている。さらに、楔挿入部36の底面3
6a側にはボルト取付溝42が形成されている。このボ
ルト取付溝42は、楔部材26の移動方向と同一方向に
延在する拡幅部43と、この拡幅部43と底面36aと
の間に配される狭窄部44とを有し、拡幅部43にクラ
ンプボルト41の頭部45を受け入れることにより、当
該クランプボルト41の軸線方向の移動を拘束しつつ、
当該クランプボルト41を楔部材26と同一方向へ移動
可能に保持するようになっている。なお、拡幅部43へ
のクランプボルト頭部45の挿入は、ボルト取付溝42
の一端に形成されたボルト挿入孔46を介して行われる
ようになっている。
The wedge member 26 is formed to be shorter than the entire length of the wall surface 24 of the wedge insertion portion 36 in the longitudinal direction, so that the wedge member 26 can move within the wedge insertion portion 36 along the wall surface 24. It has been. Further, the bottom surface 3 of the wedge insertion portion 36
A bolt mounting groove 42 is formed on the 6a side. The bolt mounting groove 42 has a widened portion 43 extending in the same direction as the moving direction of the wedge member 26, and a narrowed portion 44 disposed between the widened portion 43 and the bottom surface 36a. By receiving the head 45 of the clamp bolt 41, the movement of the clamp bolt 41 in the axial direction is restrained.
The clamp bolt 41 is held so as to be movable in the same direction as the wedge member 26. In addition, the insertion of the clamp bolt head 45 into the widening portion 43
This is performed through a bolt insertion hole 46 formed at one end.

【0011】そして、クランプボルト41は、その頭部
45が拡幅部43に挿入された状態において、その雄ね
じ部47が狭窄部44を介してチップ取付溝22の開口
端側へ突出せしめられ、この雄ねじ部47と楔部材26
の雌ねじ部26cとが螺合することにより、楔部材26
が底面36a側へ引き込まれるようになっている。な
お、この際、クランプボルト41の操作を容易にすべ
く、雄ねじ部47の先端にはレンチ(図示略)と嵌合す
るレンチ穴48が形成されている。
When the head 45 of the clamp bolt 41 is inserted into the widened portion 43, the male screw portion 47 is protruded through the narrowed portion 44 toward the opening end of the chip mounting groove 22. Male screw part 47 and wedge member 26
Is screwed with the internal thread portion 26c of the wedge member 26c.
Is drawn toward the bottom surface 36a. At this time, in order to facilitate the operation of the clamp bolt 41, a wrench hole 48 for fitting a wrench (not shown) is formed at the tip of the male screw portion 47.

【0012】ここで、楔部材26及びクランプボルト4
1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
1 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.

【0013】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41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41
とともにチップ取付溝22の上方へ移動させて押圧面2
6b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23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33がチップ取付溝22の壁面25の凸部39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 41 is loosened to release the pressing of the cutting blade tip 23 by the wedge member 26, and then the wedge member 26 is
Together with the tip mounting groove 22 to move the pressing surface 2
6b is laterally released from a position facing the lower surface 29 of the cutting tip 23. As a result, the restriction in the direction perpendicular to the lower surface 29 of the cutting edge chip 23 is released, and the cutting edge chip 23 is moved toward the wall surface 24 until the concave portion 33 comes off the convex portion 39 of the wall surface 25 of the chip mounting groove 22. After this, the tool body 21
The cutting edge tip 23 can be removed from the tip mounting groove 22 by moving the cutting edge tip 23 in the radial direction or the axial direction.

【0014】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35へ挿入して凹部33を凸部39と嵌合させ、
この後、楔部材26を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41を回転させて楔部材26を挿入方向に沿って楔
挿入部36の底面36a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33が凸部
39と嵌合して位置決め基準面37、38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 moved in advance above the chip mounting groove 22, and then the cutting edge chip 23 is inserted into the chip insertion portion 35 of the chip mounting groove 22. To fit the concave portion 33 with the convex portion 39,
Thereafter, the wedge member 26 is moved so that the pressing surface 26b thereof faces the lower surface 29 of the cutting blade tip 23, and the clamp bolt 41 is further rotated so that the wedge member 26 is inserted along the bottom surface 36a of the wedge insertion portion 36 in the insertion direction. The cutting edge tip 23 is pressed against the wall surface 25 by the pressing surface 26b. By attaching the cutting edge tip 23 in the above procedure, the concave portion 33 of the cutting edge tip 23 is fitted with the convex portion 39, and the movement in the direction away from the positioning reference surfaces 37, 38 is restricted. Therefore, even when the tool main body 21 is rotated at a high speed, the cutting blade tip 23 does not fly out.

【0015】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41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4
1を相当数回転させて楔部材26の押圧面26と切刃チ
ップ23の下面29との間に凸部39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 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 41 is also small. In this regard, if the wedge member 26 cannot be moved as in the related art, the clamp bolt 4
1 needs to be rotated a considerable number of times to provide a gap between the pressing surface 26 of the wedge member 26 and the lower surface 29 of the cutting blade tip 23 that exceeds the amount of projection of the projection 39, which significantly increases the labor required for the work. From the above, according to the face mill 20 of the present embodiment, it is clear that the attachment and detachment work of the cutting edge tip 23 can be performed easily and quickly as compared with the conventional case.

【0016】なお、本実施例は本発明のあくまで一例を
示すに過ぎないものであり、本発明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33及び凸部39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5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楔部
材26及びクランプボルト41を同様に移動可能とする
ことで同等の効果を得ることができる。ここで、図5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25を、チップ取付溝22内に装着される保持具50
の壁面51によって構成しているが、保持具50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50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 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 33 and the convex portion 39 for preventing the cutting blade tip 23 from popping out can be provided in reverse. Further, as shown in FIG. 5, the mounting structure of the cutting edge tip 23 is such that the wedge member 26 and the clamp bolt 41 can be similarly moved even with a cutting tool configured to press the upper surface 27 of the cutting edge tip 23 with the wedge member 26. By doing so, an equivalent effect can be obtained. Here, in the example of FIG. 5, 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 25 that comes into contact with the cutting edge chip 23 is held in the chip mounting groove 22. Tool 50
However, it is a matter of course that the lower surface 29 of the cutting edge tip 23 may be directly in contact with the tool body 21 without the holder 50. As the holder 50 in this case, either a holder having a groove for receiving the cutting blade tip 23 or a holder having a simple flat plate shape can be used.

【0017】さらに、クランプボルト41の取付構造に
ついても、図1及び図2に限定されることなく、例えば
図6〜図8に示すように、クランプボルト41の他端側
に、頭部44(図2参照)に代えて雄ねじ部47と逆方
向へ捩れる副雄ねじ部49を形成する一方で、ボルト取
付溝42の拡幅部43にはナット60のフランジ61を
挿入し、このナット60の雌ねじ部62と副雄ねじ部4
9とを螺合させてクランプボルト41を着脱するように
してもよい。この場合、ナット60の雌ねじ部62の周
囲に、ボルト取付溝42の狭窄部44と略同一幅のボス
63に形成してナット60の回転を阻止することによ
り、クランプボルト41の操作性が一層向上するととも
に、ナット60や拡幅部43の摩耗も低減される。ま
た、このようにナット60を使用する場合には、クラン
プボルト41の雄ねじ部47に代えて頭部44を形成
し、該頭部44を楔部材26と係合させても良い。
Further, the mounting structure of the clamp bolt 41 is not limited to those shown in FIGS. 1 and 2, for example, as shown in FIGS. Instead of forming the sub-male thread portion 49 which is twisted in the opposite direction to the male thread portion 47 in place of the male thread portion 47, the flange 61 of the nut 60 is inserted into the widened portion 43 of the bolt mounting groove 42, and the female thread of the nut 60 is formed. Part 62 and secondary male screw part 4
9 may be screwed into and removed from the clamp bolt 41. In this case, the operability of the clamp bolt 41 is further improved by forming a boss 63 having substantially the same width as the constricted portion 44 of the bolt mounting groove 42 around the female screw portion 62 of the nut 60 to prevent the nut 60 from rotating. As well as the wear of the nut 60 and the widened portion 43 is reduced. When the nut 60 is used as described above, a head 44 may be formed instead of the male screw portion 47 of the clamp bolt 41, and the head 44 may be engaged with the wedge member 26.

【0018】[0018]

【発明の効果】以上説明したように、この発明によれ
ば、楔部材を当該楔部材の挿入方向と交差する方向でか
つチップ取付溝の周方向を向く壁面のいずれか一方に沿
う方向へ移動自在としたため、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
及び凹部を形成した場合であっても、楔部材を移動させ
るだけで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。
As described above, according to the present invention, the wedge member is moved in a direction intersecting with the insertion direction of the wedge member and in a direction along one of the circumferential walls of the chip mounting groove. Because it is free, even if a convex part and a concave part are formed between the cutting edge tip and the wall surface of the chip mounting groove to prevent the cutting edge tip from jumping out, the cutting edge tip can be easily formed only by moving the wedge member. It can be attached and detached quickly, which reduces the time and cost required for attaching and detaching the cutting edge, and realizes a marked improvement in working efficiency especially when applied to face mills and end mills with many cutting edges. Is done.

【図面の簡単な説明】[Brief description of the drawings]

【図1】本発明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 in 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4のIV−IV線における断面図である。FIG. 4 is a sectional view taken along the line IV-IV in FIG. 4;

【図5】図1の変形例を示す図である。FIG. 5 is a diagram showing a modification of FIG. 1;

【図6】図1のさらに他の変形例を示す図である。FIG. 6 is a view showing still another modification of FIG. 1;

【図7】図6に示すナットの軸線方向の断面図である。FIG. 7 is an axial sectional view of the nut shown in FIG. 6;

【図8】図7のVIII方向からの矢視図である。8 is a view as seen from the direction of arrow VIII in FIG. 7;

【図9】従来の正面フライスの外周部の一例を示す図で
ある。
FIG. 9 is a view showing an example of an outer peripheral portion of a conventional face milling machine.

【図10】図9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. 10 is a sectional view showing a configuration around a cutting edge tip of the face milling machine shown in FIG. 9;

【符号の説明】[Explanation of symbols]

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 33 凸部 39 凹部 41 クランプボルト 42 ボルト取付溝 44 頭部 47 雄ねじ部 49 副雄ねじ部 50 保持具 60 ナット Reference Signs List 20 face mill 21 tool body 22 chip mounting groove 23 cutting edge chip 24, 25 wall surface facing the circumferential direction of chip mounting groove 26 wedge member 33 convex portion 39 concave portion 41 clamp bolt 42 bolt mounting groove 44 head 47 male screw portion 49 sub male screw Part 50 Holder 60 Nut

───────────────────────────────────────────────────── フロントページの続き (72)発明者 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 平1−125116(JP,U) 特公 昭44−32353(JP,B1) (58)調査した分野(Int.Cl.6,DB名) B23C 5/22 B23C 5/06──────────────────────────────────────────────────続 き Continuation of front page (72) Inventor Hiroaki Hayashizaki 1511 Furamagi, Ishishita-cho, Yuki-gun, Ibaraki Pref. 44-32353 (JP, B1) (58) Fields investigated (Int. Cl. 6 , DB name) B23C 5/22 B23C 5/06

Claims (5)

(57)【特許請求の範囲】(57) [Claims] 【請求項1】 工具本体に形成されたチップ取付溝に切
刃チップが挿入され、この切刃チップが、上記チップ取
付溝の周方向を向く壁面の一方と当該切刃チップとの間
に挿入される楔部材によって上記チップ取付溝の周方向
を向く壁面の他方に押圧されてなる切削工具において、 上記楔部材を、その挿入方向と交差する方向でかつ上記
チップ取付溝の周方向を向く壁面のいずれか一方に沿う
方向へ移動可能に設けたことを特徴とする切削工具。
1. A cutting edge tip is inserted into a tip mounting groove formed in a tool body, and the cutting edge tip is inserted between one of the circumferentially oriented wall surfaces of the tip mounting groove and the cutting edge tip. A cutting tool which is pressed against the other of the wall faces of the chip mounting groove in the circumferential direction by the wedge member, wherein the wedge member is oriented in a direction intersecting the insertion direction and in a circumferential direction of the chip mounting groove. A cutting tool provided so as to be movable in a direction along any one of the above.
【請求項2】 上記チップ取付溝の周方向を向く壁面の
うち、上記切刃チップが押圧される他方の壁面は、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。
2. The other wall surface of the chip mounting groove, which faces the circumferential direction of the chip mounting groove, on which the cutting edge tip is pressed is constituted by the wall surface of a holder mounted in the chip mounting groove. The cutting tool according to claim 1, wherein:
【請求項3】 上記チップ取付溝の底面側に上記楔部材
の移動方向と同一方向へ延在しかつ内部が拡幅するボル
ト取付溝が形成され、このボルト取付溝には、一端側に
雄ねじ部が、他端側に頭部が設けられたクランプボルト
が、上記頭部をボルト取付溝の内部に挿入させ、かつ上
記雄ねじ部を当該ボルト取付溝の開口端から突出させて
取り付けられ、このクランプボルトの上記雄ねじ部と上
記楔部材の雌ねじ部とが螺合することにより上記楔部材
が上記チップ取付溝内に取り付けられていることを特徴
とする請求項1または2記載の切削工具。
3. A bolt mounting groove, which extends in the same direction as the movement direction of the wedge member and whose width is widened, is formed on the bottom surface side of the chip mounting groove, and the bolt mounting groove has a male screw portion on one end side. However, a clamp bolt having a head provided on the other end side is attached by inserting the head into the inside of the bolt mounting groove and projecting the male screw portion from the opening end of the bolt mounting groove. The cutting tool according to claim 1, wherein the wedge member is mounted in the chip mounting groove by screwing the male thread portion of the bolt and the female thread portion of the wedge member. 4.
【請求項4】 請求項3記載の切削工具において、上記
クランプボルトの他端側に、上記頭部に代えて上記雄ね
じ部と逆方向へ捩れる副雄ねじ部を形成し、かつ、上記
ボルト取付溝には上記クランプボルトに代えてナットを
挿入し、このナットと上記クランプボルトの上記副雄ね
じ部とを螺合させたことを特徴とする切削工具。
4. The cutting tool according to claim 3, further comprising, on the other end side of the clamp bolt, a sub male screw portion twisted in a direction opposite to the male screw portion in place of the head portion, and the bolt mounting. A cutting tool, wherein a nut is inserted into the groove in place of the clamp bolt, and the nut is screwed with the sub male screw portion of the clamp bolt.
【請求項5】 上記チップ取付溝の周方向を向く壁面の
うち、上記切刃チップと当接する他方の壁面と上記切刃
チップとの間に、上記チップ取付溝の周方向を向く壁面
と交差する方向へ突出する凸部及び該凸部と嵌合する凹
部を形成したことを特徴とする請求項1〜4のいずれか
一に記載の切削工具。
5. A peripheral wall of the tip mounting groove intersects with a peripheral wall of the tip mounting groove between the other wall surface of the chip mounting groove facing the peripheral direction and the cutting blade tip. The cutting tool according to any one of claims 1 to 4, wherein a convex portion protruding in a direction to be formed and a concave portion fitted with the convex portion are formed.
JP29177691A 1991-11-07 1991-11-07 Cutting tools Expired - Fee Related JP2841974B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP29177691A JP2841974B2 (en) 1991-11-07 1991-11-07 Cutting tools

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP29177691A JP2841974B2 (en) 1991-11-07 1991-11-07 Cutting tools

Publications (2)

Publication Number Publication Date
JPH05138426A JPH05138426A (en) 1993-06-01
JP2841974B2 true JP2841974B2 (en) 1998-12-24

Family

ID=17773277

Family Applications (1)

Application Number Title Priority Date Filing Date
JP29177691A Expired - Fee Related JP2841974B2 (en) 1991-11-07 1991-11-07 Cutting tools

Country Status (1)

Country Link
JP (1) JP2841974B2 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3356163B2 (en) 2000-10-10 2002-12-09 住友電気工業株式会社 Rotary cutting tool
CN101563179B (en) * 2006-11-13 2012-04-11 钴领无限公司 Metal-cutting tool
WO2008123375A1 (en) * 2007-03-30 2008-10-16 Kyocera Corporation Cutting tool, and cutting method using the tool

Also Published As

Publication number Publication date
JPH05138426A (en) 1993-06-01

Similar Documents

Publication Publication Date Title
KR100774095B1 (en) Combination of screw and screw driver bit and header punch for its manufacture
CA2565422C (en) Drill with releasably mounted cutting head
US6551036B2 (en) Drilling bit and holder for drilling bit
JP2005161462A (en) Throw-away drill
US4211507A (en) Rotary cutting tool with radially adjustable, reversible tool bits
US4741649A (en) Throwaway tip
JP2841974B2 (en) Cutting tools
CA3113140A1 (en) Saw tooth and insert therefor
JPWO2004065067A1 (en) Combination with screwdriver bit and screw
EP1243365A2 (en) Tool holder for boring bars
JP3615254B2 (en) Drilling tool
JP3303184B2 (en) Indexable milling tools
JP2526213Y2 (en) Cutting tools
JP4154831B2 (en) Chip mounting mechanism
JPH11291102A (en) Throw-away tip and throw-away-type drilling tool with throw-away tip mounted thereon
JP2584176Y2 (en) Indexable tip
CN212094382U (en) Lathe tool and lathe tool structure comprising same
JP2557737Y2 (en) Cutting tool cutter body and cutting tool
JPH1110434A (en) Throw-away type rotary cutting tool
JP2000288823A (en) Throwaway end mill
JPH09174321A (en) Pin milling cutter
JPH1110435A (en) Throw away type rotary grinding tool
JP2503527Y2 (en) Slow away type rolling tool
JP2006198749A (en) Throw-away turning tool
JP2573098Y2 (en) Indexable cutting tools

Legal Events

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: 19980922

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20071023

Year of fee payment: 9

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081023

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20081023

Year of fee payment: 10

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091023

Year of fee payment: 11

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20091023

Year of fee payment: 11

S531 Written request for registration of change of domicile

Free format text: JAPANESE INTERMEDIATE CODE: R313531

R350 Written notification of registration of transfer

Free format text: JAPANESE INTERMEDIATE CODE: R350

FPAY Renewal fee payment (event date is renewal date of database)

Free format text: PAYMENT UNTIL: 20101023

Year of fee payment: 12

LAPS Cancellation because of no payment of annual fees