JPH0929514A - Clamp mechanism for throw-away tip - Google Patents
Clamp mechanism for throw-away tipInfo
- Publication number
- JPH0929514A JPH0929514A JP7183088A JP18308895A JPH0929514A JP H0929514 A JPH0929514 A JP H0929514A JP 7183088 A JP7183088 A JP 7183088A JP 18308895 A JP18308895 A JP 18308895A JP H0929514 A JPH0929514 A JP H0929514A
- Authority
- JP
- Japan
- Prior art keywords
- throw
- tip
- hole
- seat
- mounting seat
- 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.)
- Withdrawn
Links
Landscapes
- Cutting Tools, Boring Holders, And Turrets (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、スローアウェイ式
のバイト、ボーリングバー、カッター、エンドミル等の
工具本体のチップ取付座にシートを介してスローアウェ
イチップを着脱自在に装着するためのスローアウェイチ
ップのクランプ機構に係わり、特に、スローアウェイチ
ップの取付精度の向上、位置ずれの防止を図ることがで
きるスローアウェイチップのクランプ機構に関するもの
である。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throw-away tip for detachably attaching a throw-away tip to a tip mounting seat of a tool body of a throw-away type bite, boring bar, cutter, end mill or the like via a seat. In particular, the present invention relates to a clamp mechanism for a throw-away tip that can improve the attachment accuracy of the throw-away tip and prevent displacement.
【０００２】[0002]
【従来の技術】従来のスローアウェイチップのクランプ
機構の一つには、図８に示すように、二重ねじを用いた
ものがある。即ち、工具本体１のチップ取付座２に取付
ねじ孔３を設け、チップ取付座２に、中央に係止孔５ａ
を有するシート５を、その係止孔５ａがチップ取付座２
の取付ねじ孔３に一致するように着座させる。そこで、
内部に貫通したねじ孔６ａを有するシート取付ねじ６
を、シート５の係止孔５ａから取付ねじ孔３に挿通螺合
させて、まず、シート５をチップ取付座２にクランプし
て固定する。2. Description of the Related Art One of conventional clamp mechanisms for throw-away tips uses a double screw as shown in FIG. That is, the mounting screw hole 3 is provided in the chip mounting seat 2 of the tool body 1, and the locking hole 5a is formed in the center of the chip mounting seat 2.
The seat 5 having the
It is seated so as to match the mounting screw hole 3 of. Therefore,
Seat mounting screw 6 having a screw hole 6a penetrating therethrough
Is inserted and screwed into the mounting screw hole 3 from the locking hole 5a of the seat 5, and the seat 5 is first clamped and fixed to the chip mounting seat 2.
【０００３】次に、中央に係止孔７ａを有するスローア
ウェイチップ７を、その係止孔７ａがシート取付ねじ６
のねじ孔６ａに一致するように、シート５上に着座させ
る。そこで、チップ取付ねじ８を、スローアウェイチッ
プ７の係止孔７ａからシート取付ねじ６のねじ孔６ａに
挿通螺合させ、スローアウェイチップ７をシート５上で
クランプして固定する。Next, a throw-away tip 7 having a locking hole 7a in the center is provided, and the locking hole 7a has a seat mounting screw 6a.
The seat 5 is seated so as to be aligned with the screw hole 6a. Therefore, the tip attachment screw 8 is inserted and screwed into the screw hole 6a of the seat attachment screw 6 from the locking hole 7a of the throw-away tip 7, and the throw-away tip 7 is clamped and fixed on the seat 5.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、そのよ
うなスローアウェイチップのクランプ機構では、工具本
体１の取付ねじ孔３にシート取付ねじ６を螺合させ、シ
ート取付ねじ６のねじ孔６ａにチップ取付ねじ８を螺合
させる二重ねじとなっているため、シート取付ねじ６の
成形誤差及び取付誤差と、チップ取付ねじ８の成形誤差
及び取付誤差が累積されることとなる。よって、スロー
アウェイチップ７の取付精度を高めることが難しいとい
う不都合がある。また、スローアウェイチップ７の着脱
のためにシート取付ねじ６に対するチップ取付ねじ８の
着脱が行なわれる度に、シート取付ねじ６が取付ねじ孔
３に対してゆるんでくる場合があり、その場合には、特
にシート取付ねじ６の強度が低下する。従って、スロー
アウェイチップ７に過大な切削圧力が加わるとスローア
ウェイチップ７の位置ずれが生じてしまうという不都合
がある。However, in such a throw-away tip clamping mechanism, the seat mounting screw 6 is screwed into the mounting screw hole 3 of the tool body 1 and the chip is fitted into the screw hole 6a of the seat mounting screw 6. Since it is a double screw for screwing the mounting screw 8, a molding error and a mounting error of the seat mounting screw 6, and a molding error and a mounting error of the chip mounting screw 8 are accumulated. Therefore, there is an inconvenience that it is difficult to improve the attachment accuracy of the throw-away tip 7. Further, every time the tip mounting screw 8 is attached to and detached from the seat attaching screw 6 for attaching and detaching the throw-away tip 7, the seat attaching screw 6 may be loosened with respect to the attaching screw hole 3. In that case, Particularly, the strength of the seat mounting screw 6 is reduced. Therefore, if an excessive cutting pressure is applied to the throw-away tip 7, there is a disadvantage that the throw-away tip 7 is displaced.
【０００５】この問題解決のために、実開昭６４−２３
３０２公報に示されるようなスローアウェイチップのク
ランプ機構が提案されている。このスローアウェイチッ
プのクランプ機構は、図９に示すように、チップ取付座
１２に有底の位置決め孔１３が形成されその位置決め孔
１３の底面１３ａに取付ねじ孔１４が形成された工具本
体１１と、チップ取付座１２に載置され略中央に位置決
め孔１３と略同径の係止孔１５ａが形成されたシート１
５と、このシート１５の係止孔１５ａ及び位置決め孔１
３に嵌合される筒状の係止部材１６と、スローアウェイ
チップ１７の係止孔１７ａ及び係止部材１６に挿通さ
れ、頭部がスローアウェイチップ１７の係止孔１７ａに
係止されるとともに先端部が位置決め孔１３の取付ねじ
孔１４に螺合されてスローアウェイチップ１７をシート
１５を挟んでチップ取付座１２に固定するチップ取付ね
じ１８とからなる。In order to solve this problem, the actual exploitation of Sho 64-23
A clamp mechanism for a throw-away tip as disclosed in Japanese Patent Laid-Open No. 302-302 has been proposed. As shown in FIG. 9, this throw-away tip clamping mechanism includes a tool main body 11 in which a bottomed positioning hole 13 is formed in a tip mounting seat 12 and a mounting screw hole 14 is formed in a bottom surface 13a of the positioning hole 13. The seat 1 mounted on the chip mounting seat 12 and having a locking hole 15a having substantially the same diameter as that of the positioning hole 13 formed substantially at the center.
5, the locking hole 15a and the positioning hole 1 of the sheet 15
3 is inserted into the tubular locking member 16 and the locking hole 17a and the locking member 16 of the throw-away tip 17, and the head is locked in the locking hole 17a of the throw-away tip 17. At the same time, the tip end portion is screwed into the mounting screw hole 14 of the positioning hole 13 to fix the throw-away tip 17 to the tip mounting seat 12 with the seat 15 interposed therebetween.
【０００６】従って、このスローアウェイチップのクラ
ンプ機構では、シート１５は係止部材１６によりチップ
取付座１２に装着し、スローアウェイチップ１７はチッ
プ取付ねじ１８によりチップ取付座１２に固定するの
で、図８の二重ねじの場合のスローアウェイチップ７の
位置ずれ及び取付精度の問題を解決することができる。Therefore, in this throw-away tip clamping mechanism, the seat 15 is attached to the tip mounting seat 12 by the locking member 16, and the throw-away tip 17 is fixed to the tip mounting seat 12 by the tip mounting screw 18. It is possible to solve the problems of positional deviation and attachment accuracy of the throw-away tip 7 in the case of the double screw of No. 8.
【０００７】ところが、このスローアウェイチップのク
ランプ機構では、図９に示すようにチップ取付座１２に
有底の位置決め孔１３を形成して係止部材１６を嵌合さ
せるため、チップ取付座１２より下がった位置決め孔１
３の底面１３ａに、チップ取付ねじ１８の先端部が螺合
する取付ねじ孔１４が形成されている。そして、チップ
取付ねじ１８の頭部は、係止部材１６及びシート１５の
上方に位置するスローアウェイチップ１７の係止孔１７
ａに係止させる。従って、スローアウェイチップ１７の
係止孔１７ａと取付ねじ孔１４との間隔が従来より長く
なる。そのため、このスローアウェイチップのクランプ
機構では、高いクランプ強度を発揮することが難しく、
スローアウェイチップ１７に過大な切削圧力が加わると
やはりスローアウェイチップ１７の位置ずれを生ずると
いう不都合を有している。However, in this throw-away tip clamping mechanism, as shown in FIG. 9, since the bottomed positioning hole 13 is formed in the tip mounting seat 12 and the locking member 16 is fitted therein, the tip mounting seat 12 is not fitted. Positioning hole 1 lowered
A mounting screw hole 14 into which a tip end of a chip mounting screw 18 is screwed is formed on a bottom surface 13 a of the No. 3 chip. The head of the tip mounting screw 18 has a locking hole 17 of the throw-away tip 17 positioned above the locking member 16 and the seat 15.
a. Therefore, the distance between the locking hole 17a of the throw-away tip 17 and the mounting screw hole 14 becomes longer than in the conventional case. Therefore, it is difficult for this throw-away tip clamping mechanism to exert high clamping strength,
If an excessive cutting pressure is applied to the throw-away tip 17, the throw-away tip 17 is also displaced.
【０００８】本発明は、上記事情に鑑み、スローアウェ
イチップの取付精度の向上と共に位置ずれの防止を図る
ことができるスローアウェイチップのクランプ機構を提
供することを目的としている。In view of the above circumstances, it is an object of the present invention to provide a throw-away tip clamping mechanism capable of improving the attachment accuracy of the throw-away tip and preventing displacement.
【０００９】[0009]
【課題を解決するための手段】請求項１記載のスローア
ウェイチップのクランプ機構は、工具本体のチップ取付
座にシートを介してスローアウェイチップを着座させ、
スローアウェイチップに形成された係止孔にチップ取付
ねじを挿通して螺着することによりスローアウェイチッ
プをチップ取付座側にクランプするようにしたスローア
ウェイチップのクランプ機構であって、チップ取付座
は、嵌合孔が形成された取付座底面と、取付座底面から
屹立した取付座壁面とからなり、シートには、嵌合孔に
連通する貫通孔が形成され、シートの貫通孔とチップ取
付座の嵌合孔には、内部にねじ孔を有する筒状係止部材
が挿通され、筒状係止部材の基部は、取付座底面の嵌合
孔に嵌合され、筒状係止部材の基部の外壁面は、嵌合溝
を有し、工具本体は、筒状係止部材の外壁面の嵌合溝に
向けて形成されたねじ孔を有し、ねじ孔には、筒状係止
部材の嵌合溝に嵌合する止めねじが螺着され、筒状係止
部材の端部の外壁面は、嵌合孔の中心軸に対して取付座
壁面側に偏心して形成され、シートは、筒状係止部材の
端部の外壁面の突き出し部と取付座壁面との間に挟持さ
れ、スローアウェイチップをクランプするチップ取付ね
じは、筒状係止部材のねじ孔に螺着されることを前記課
題の解決手段とした。A clamp mechanism for a throw-away tip according to claim 1, wherein the throw-away tip is seated on a tip mounting seat of a tool body via a seat,
A throwaway tip clamping mechanism that inserts a tip mounting screw into the locking hole formed in the throw-away tip to screw it onto the tip mounting seat side. Consists of a mounting seat bottom surface with a fitting hole formed therein and a mounting seat wall surface standing upright from the mounting seat bottom surface.A through hole communicating with the fitting hole is formed in the seat. A tubular locking member having a screw hole inside is inserted into the fitting hole of the seat, and the base portion of the tubular locking member is fitted into the fitting hole of the bottom surface of the mounting seat, so that the tubular locking member The outer wall surface of the base portion has a fitting groove, the tool body has a screw hole formed toward the fitting groove of the outer wall surface of the cylindrical locking member, and the screw hole has a cylindrical locking member. A set screw that fits in the fitting groove of the member is screwed, and the outer wall surface of the end of the tubular locking member The seat is formed eccentrically to the mounting seat wall surface side with respect to the center axis of the fitting hole, and the seat is sandwiched between the protruding portion of the outer wall surface of the end portion of the tubular locking member and the mounting seat wall surface, and the throwaway member is provided. The tip mounting screw for clamping the tip is screwed into the screw hole of the tubular locking member, which is a means for solving the above-mentioned problems.
【００１０】請求項２記載のスローアウェイチップのク
ランプ機構は、請求項１記載のスローアウェイチップの
クランプ機構であって、筒状係止部材の端部の端面に
は、締付穴が形成されていることを前記課題の解決手段
とした。A clamp mechanism for a throw-away tip according to a second aspect is the clamp mechanism for a throw-away tip according to the first aspect, wherein a fastening hole is formed on an end face of an end portion of the tubular locking member. That is, the means for solving the above-mentioned problems.
【００１１】請求項３記載のスローアウェイチップのク
ランプ機構は、請求項１又は２記載のスローアウェイチ
ップのクランプ機構であって、工具本体に形成されたね
じ孔は、筒状係止部材の外壁面の嵌合溝を掠めるように
形成され、止めねじの先端部には、テーパー部が形成さ
れ、テーパー部の外周面が嵌合溝に嵌合されていること
を前記課題の解決手段とした。The clamp mechanism for the throw-away tip according to claim 3 is the clamp mechanism for the throw-away tip according to claim 1 or 2, wherein the screw hole formed in the tool body is outside the tubular locking member. A means for solving the above-mentioned problems is formed so that the fitting groove of the wall surface is formed, a taper portion is formed at the tip of the set screw, and the outer peripheral surface of the taper portion is fitted in the fitting groove. .
【００１２】請求項４記載のスローアウェイチップのク
ランプ機構は、請求項１ないし３のいずれかに記載のス
ローアウェイチップのクランプ機構であって、スローア
ウェイチップの係止孔は、チップ取付座に着座した状態
で嵌合孔の中心軸に対して取付座壁面から離間する方向
に偏心していることを前記課題の解決手段とした。The clamp mechanism of the throw-away tip according to claim 4 is the clamp mechanism of the throw-away tip according to any one of claims 1 to 3, wherein the engaging hole of the throw-away tip is formed in the tip mounting seat. In the seated state, the eccentricity with respect to the central axis of the fitting hole in the direction away from the mounting seat wall surface is the means for solving the above problems.
【００１３】[0013]
【発明の実施の形態】以下、本発明の一実施形態を図面
に基づき説明する。図６は、本発明のスローアウェイチ
ップのクランプ機構が適用されたスローアウェイ式のエ
ンドミル１００を示す図であり、エンドミル１００の工
具本体３１は、鋼材等から形成されて柱状をなしてい
る。工具本体３１の基端部は図示しない工作機械のスピ
ンドル側に取り付けられるシャンク３１ａを形成してお
り、工具本体３１の先端部３１ｂの外縁側には、チップ
取付座３２が形成されている。チップ取付座３２は、エ
ンドミル１００の回転軸心ＣＴに平行な平坦面をなす図
１に示す取付座底面３２ａと、この取付座底面３２ａか
ら屹立して、工具本体３１の先端側及び外周側に向く取
付座壁面３２ｂ、３２ｂとからなっている。また、取付
座底面３２ａの中央部には、取付座底面３２ａに直交す
る嵌合孔３３が形成されている。BEST MODE FOR CARRYING OUT THE INVENTION An embodiment of the present invention will be described below with reference to the drawings. FIG. 6 is a view showing a throw-away type end mill 100 to which the clamp mechanism of the throw-away tip of the present invention is applied, and a tool body 31 of the end mill 100 is formed of steel or the like and has a columnar shape. The base end portion of the tool body 31 forms a shank 31a that is attached to the spindle side of a machine tool (not shown), and the tip attachment seat 32 is formed on the outer edge side of the tip portion 31b of the tool body 31. The tip mounting seat 32 is a mounting seat bottom surface 32a shown in FIG. 1, which is a flat surface parallel to the rotation axis CT of the end mill 100, and stands upright from the mounting seat bottom surface 32a. It is composed of facing mounting wall surfaces 32b and 32b. In addition, a fitting hole 33 that is orthogonal to the mounting seat bottom surface 32a is formed at the center of the mounting seat bottom surface 32a.
【００１４】チップ取付座３２の取付座底面３２ａには
シート３５が着座されており、このシート３５は、超硬
合金やハイス等の硬質材料から形成されて、正方形の平
板状をなし、その下面がチップ取付座３２の取付座底面
３２ａに着座される着座面３５ａとされ、その上面がス
ローアウェイチップ３７を着座させるチップ着座面３５
ｂとされている。また、シート３５の側面３５ｃはチッ
プ取付座３２の取付座壁面３２ｂ、３２ｂに当接してお
り、シート３５の中央部には、チップ取付座３２の嵌合
孔３３に連通し、この嵌合孔３３と略同径の貫通孔３５
ｄが形成されている。また、シート３５の貫通孔３５ｄ
は、チップ取付座３２の嵌合孔３３に対して、図２に示
すように取付座壁面３２ｂ、３２ｂの角隅から離間する
方向に偏心しており、貫通孔３５ｄの、取付座壁面３２
ｂ、３２ｂの角隅側の壁面は、図１に示すように嵌合孔
３３の壁面より中心軸ＣＴ１側に位置している。A seat 35 is seated on the mounting seat bottom surface 32a of the chip mounting seat 32. The seat 35 is made of a hard material such as cemented carbide or high speed steel, and has a square flat plate shape. Is a seating surface 35a that is seated on the mounting seat bottom surface 32a of the chip mounting seat 32, and the upper surface thereof is the chip seating surface 35 on which the throw-away tip 37 is seated.
It is assumed to be b. The side surface 35c of the seat 35 is in contact with the mounting seat wall surfaces 32b and 32b of the chip mounting seat 32, and the central portion of the seat 35 communicates with the fitting hole 33 of the chip mounting seat 32. Through hole 35 having substantially the same diameter as 33
d is formed. Further, the through hole 35d of the sheet 35
Is eccentric with respect to the fitting hole 33 of the chip mounting seat 32 in the direction away from the corners of the mounting seat wall surfaces 32b, 32b as shown in FIG.
The wall surfaces on the corner side of b and 32b are located closer to the central axis CT1 than the wall surface of the fitting hole 33 as shown in FIG.
【００１５】シート３５の貫通孔３５ｄからチップ取付
座３２の嵌合孔３３に渡る部分には、概略円筒状に形成
された筒状係止部材３６が挿通されており、筒状係止部
材３６の内部は、ねじ孔３６ａになっている。筒状係止
部材３６の基部３６ｂ（図１下部分）は、取付座底面３
２ａの嵌合孔３３に嵌合されており、筒状係止部材３６
の基部３６ｂの外壁面は、嵌合溝３６ｃを有している。
嵌合溝３６ｃは、図４に示すように筒状係止部材３６の
中心軸ＣＴ１（即ち、図１の嵌合孔３３の中心軸）回り
に環状に形成されており、嵌合溝３６ｃの断面形状は、
円弧状をなしている。A cylindrical locking member 36 having a substantially cylindrical shape is inserted through a portion extending from the through hole 35d of the seat 35 to the fitting hole 33 of the chip mounting seat 32, and the cylindrical locking member 36. The inside of is a screw hole 36a. The base portion 36b (bottom portion in FIG. 1) of the tubular locking member 36 is the mounting seat bottom surface 3
The cylindrical locking member 36 is fitted in the fitting hole 33 of 2a.
The outer wall surface of the base portion 36b has a fitting groove 36c.
The fitting groove 36c is formed in an annular shape around the central axis CT1 of the tubular locking member 36 (that is, the central axis of the fitting hole 33 in FIG. 1) as shown in FIG. The cross-sectional shape is
It has an arc shape.
【００１６】一方、図６に示す工具本体３１の先端部３
１ｂの端縁３１ｃには、図１又は図３に示すように筒状
係止部材３６の嵌合溝３６ｃに向けてねじ孔４１が形成
されており、ねじ孔４１は、嵌合孔３３に嵌合された筒
状係止部材３６の嵌合溝３６ｃを掠める位置であって、
筒状係止部材３６の中心軸ＣＴ１に対して直角なねじれ
の位置に形成されている。ねじ孔４１には、止めねじ４
２が螺着されており、止めねじ４２の先端部には図３に
示すようにテーパー部４２ａが形成されている。そのテ
ーパー部４２ａの外周面は嵌合溝３６ｃに嵌合されてお
り、図１に示すように筒状係止部材３６の、その中心軸
ＣＴ１方向の移動を阻止している。また、止めねじ４２
の頭部には、締め付け用の六角穴４２ｂが形成されてい
る。On the other hand, the tip portion 3 of the tool body 31 shown in FIG.
As shown in FIG. 1 or 3, a screw hole 41 is formed in the end edge 31c of the 1b toward the fitting groove 36c of the tubular locking member 36, and the screw hole 41 is formed in the fitting hole 33. At a position where the fitting groove 36c of the fitted tubular locking member 36 is slid,
The cylindrical locking member 36 is formed at a twisted position perpendicular to the central axis CT1. Set screw 4 in screw hole 41
2 is screwed, and a taper portion 42a is formed at the tip of the set screw 42 as shown in FIG. The outer peripheral surface of the tapered portion 42a is fitted into the fitting groove 36c, and as shown in FIG. 1, it prevents the tubular locking member 36 from moving in the direction of the central axis CT1. Also, the set screw 42
A hexagonal hole 42b for tightening is formed in the head of the.
【００１７】また、筒状係止部材３６の図１上部、即
ち、端部３６ｄの外壁面は、筒状係止部材３６の中心軸
ＣＴ１（即ち、嵌合孔３３の中心軸）に対して取付座壁
面３５ｃ、３５ｃの角隅側に偏心して形成されている。
図中直線ＣＴ２は、端部３６ｄの中心軸ＣＴ２を示して
おり、図２に示すように、端部３６ｄの中心軸ＣＴ２
は、筒状係止部材３６の中心軸ＣＴ１に対して、距離ｄ
１だけ偏心している。筒状係止部材３６の端部３６ｄの
端面３６ｆには、図示しない六角レンチが係合自在な締
付穴である六角穴３６ｇが形成されている。尚、この締
付穴は、六角レンチ等のねじ回しが係合し得る限りにお
いて如何なるものであってもよく、例えば図５に示すよ
うにすりわり３６ｈとしてもよい。Further, the upper portion of the cylindrical locking member 36 in FIG. 1, that is, the outer wall surface of the end portion 36d is relative to the central axis CT1 of the cylindrical locking member 36 (that is, the central axis of the fitting hole 33). It is formed eccentrically on the corner side of the mounting seat wall surfaces 35c, 35c.
A straight line CT2 in the drawing indicates the central axis CT2 of the end portion 36d, and as shown in FIG. 2, the central axis CT2 of the end portion 36d.
Is a distance d with respect to the central axis CT1 of the tubular locking member 36.
Only one is eccentric. A hexagonal hole 36g, which is a tightening hole into which a hexagonal wrench (not shown) can be engaged, is formed on the end surface 36f of the end portion 36d of the tubular locking member 36. The tightening hole may be of any type as long as a screwdriver such as a hexagonal wrench can be engaged therewith, and may be a slot 36h as shown in FIG. 5, for example.
【００１８】図２に示すようにシート３５の、取付座壁
面３２ｂ、３２ｂ側の部分は、筒状係止部材３６の端部
３６ｄの外壁面において中心軸ＣＴ１から最も離間した
部分である突き出し部３６ｉと前記取付座壁面３２ｂ、
３２ｂとの間に挟持されており、シート３５には、図１
に示すように、スローアウェイチップ３７が着座されて
いる。スローアウェイチップ３７は、本実施形態では超
硬合金等の硬質材料から形成されて、シート３５よりも
一回り大きな略正方形の平板状をなすものであり、この
正方形をなす上面がすくい面３７ａとされるとともに、
このすくい面３７ａの反対側の下面が着座面３７ｂとさ
れ、さらに四つの側面がそれぞれ逃げ面３７ｃとされて
いて、これらの逃げ面３７ｃに逃げ角が付されたポジテ
ィブチップとされている。そして、上記すくい面３７ａ
と各逃げ面３７ｃとの交差稜線部に切削に供される切刃
３７ｄが形成されている。また、スローアウェイチップ
３７の四つの逃げ面３７ｃの内二つは、チップ取付座３
２の取付座壁面３２ｂ、３２ｂに当接している。As shown in FIG. 2, a portion of the seat 35 on the side of the mounting seat wall surfaces 32b, 32b is a protruding portion which is a portion farthest from the central axis CT1 on the outer wall surface of the end portion 36d of the tubular locking member 36. 36i and the mounting seat wall surface 32b,
The sheet 35 is sandwiched between the sheet 32 and 32b, and
As shown in, the throw-away tip 37 is seated. The throw-away tip 37 is made of a hard material such as cemented carbide in the present embodiment, and has a substantially square flat plate shape which is slightly larger than the sheet 35, and the upper surface of the square serves as a rake surface 37a. As well as
The lower surface on the opposite side of the rake surface 37a is a seating surface 37b, and the four side surfaces are flanks 37c, respectively, and these flanks 37c are positive chips with clearance angles. And the rake face 37a
A cutting edge 37d used for cutting is formed at the ridge line portion intersecting with each flank 37c. Further, two of the four flanks 37c of the throw-away tip 37 are the tip mounting seats 3
The second mounting seat wall surfaces 32b and 32b are in contact with each other.
【００１９】スローアウェイチップ３７の中央部には、
筒状係止部材３６のねじ孔３６ａに連通する係止孔３７
ｅが貫通形成されており、係止孔３７ｅの孔壁は、シー
ト３５側に向けて徐々に縮径するテーパー面状に形成さ
れている。また、係止孔３７ｅは、チップ取付座３２の
嵌合孔３３に対して、取付座壁面３２ｂ、３２ｂの角隅
から離間する方向に僅かに偏心している。At the center of the throw-away tip 37,
Locking hole 37 communicating with the screw hole 36a of the cylindrical locking member 36
e is formed through, and the hole wall of the locking hole 37e is formed in a tapered surface shape whose diameter gradually decreases toward the seat 35 side. The locking hole 37e is slightly eccentric with respect to the fitting hole 33 of the chip mounting seat 32 in the direction away from the corners of the mounting seat wall surfaces 32b, 32b.
【００２０】スローアウェイチップ３７の係止孔３７ｅ
には、チップ取付ねじ３８が挿通されており、その頭部
３８ａは係止孔３７ｅの孔壁に係合させており、チップ
取付ねじ３８の先端部３８ｂは、筒状係止部材３６のね
じ孔３６ａに螺合されている。この筒状係止部材３６の
ねじ孔３６ａは、螺合されたチップ取付ねじ３８の中心
が嵌合孔３３の中心に位置するように、チップ取付座３
２の嵌合孔３３に対して同心状に形成されている。Locking hole 37e of the throw-away tip 37
Has a tip mounting screw 38 inserted through it, the head portion 38a of which is engaged with the hole wall of the locking hole 37e, and the tip portion 38b of the chip mounting screw 38 is the screw of the tubular locking member 36. It is screwed into the hole 36a. The threaded hole 36a of the tubular locking member 36 is formed so that the center of the threaded chip mounting screw 38 is located at the center of the fitting hole 33.
The two fitting holes 33 are formed concentrically.
【００２１】本実施形態のスローアウェイチップのクラ
ンプ機構は、以上のような構成を有するので、以下のよ
うにして工具本体３１へのスローアウェイチップ３７の
装着固定を行なうことができる。Since the throw-away tip clamping mechanism of this embodiment has the above-described structure, the throw-away tip 37 can be mounted and fixed to the tool body 31 as follows.
【００２２】即ち、まず、図７に示すように、チップ取
付座３２の嵌合孔３３に筒状係止部材３６を挿通させ
る。すると、その筒状係止部材３６の基部３６ｂは、図
１に示すように嵌合孔３３に嵌合する。次に、図７の工
具本体３１のチップ取付座３２に、シート３５を着座さ
せる。この際、図１に示すようにシート３５の側面３５
ｃは、取付座壁面３２ｂに当接され、その貫通孔３５ｄ
には筒状係止部材３６の端部３６ｄが挿通される。That is, first, as shown in FIG. 7, the cylindrical locking member 36 is inserted into the fitting hole 33 of the chip mounting seat 32. Then, the base portion 36b of the tubular locking member 36 fits into the fitting hole 33 as shown in FIG. Next, the seat 35 is seated on the tip mounting seat 32 of the tool body 31 of FIG. At this time, as shown in FIG.
c is abutted against the mounting seat wall surface 32b, and its through hole 35d
The end portion 36d of the tubular locking member 36 is inserted through this.
【００２３】そこで、筒状係止部材３６の端部３６ｄの
端面３６ｆに形成された六角穴３６ｇに図示しないレン
チを係合させて、筒状係止部材３６を回転させる。この
筒状係止部材３６の回転は、レンチにより行なうことが
できるので簡便である。そして、偏心した端部３６ｄの
外壁面の突き出し部３６ｉを、図２に示すように取付座
壁面３２ｂ、３２ｂの角隅側に向ける。これにより、シ
ート３５の前記角隅側の部分を突き出し部３６ｉと取付
座壁面３２ｂ、３２ｂとの間で挟み付けることができ
る。Then, a wrench (not shown) is engaged with the hexagonal hole 36g formed in the end surface 36f of the end portion 36d of the tubular locking member 36 to rotate the tubular locking member 36. The rotation of the tubular locking member 36 can be performed easily with a wrench. Then, the protruding portion 36i of the outer wall surface of the eccentric end portion 36d is directed to the corner side of the mounting seat wall surfaces 32b, 32b as shown in FIG. Accordingly, the corner-side portion of the seat 35 can be sandwiched between the protruding portion 36i and the mounting seat wall surfaces 32b and 32b.
【００２４】また、図７に示すように工具本体３１の端
面３１ｂに形成されたねじ孔４１に止めねじ４２をねじ
込むことにより、図３に示すように止めねじ４２のテー
パー部４２ａが筒状係止部材３６の基部３６ｂの嵌合溝
３６ｃに嵌合する。すると、筒状係止部材３６は、図１
に示す中心軸ＣＴ１方向の動きを阻止される。この際、
図３に示すように止めねじ４２を捩じ込むにつれて、嵌
合溝３６ｃに嵌合するテーパー部４２ａの外周面が拡径
されてゆき、筒状係止部材３６を、徐々に嵌合孔３３の
壁面に押し付けるので、筒状係止部材３６が嵌合孔３３
内でガタつかないように強く固定することができる。こ
れにより、図１に示すシート３５をチップ取付座３２に
正確且つ確実に位置決めすることができる。尚、止めね
じ４２のテーパー部４２ａの外周面が嵌合溝３６ｃの図
１下側の縁部に係合する構成とすることにより、筒状係
止部材３６の固定を更に強くすることができる。Further, as shown in FIG. 7, the set screw 42 is screwed into the screw hole 41 formed in the end surface 31b of the tool body 31, so that the tapered portion 42a of the set screw 42 is cylindrically engaged as shown in FIG. It is fitted into the fitting groove 36c of the base portion 36b of the stop member 36. Then, the tubular locking member 36 is moved to the position shown in FIG.
The movement in the direction of the central axis CT1 shown in FIG. On this occasion,
As shown in FIG. 3, as the set screw 42 is screwed in, the outer peripheral surface of the tapered portion 42a fitted into the fitting groove 36c is expanded in diameter, and the tubular locking member 36 is gradually fitted into the fitting hole 33. Since it is pressed against the wall surface of the
It can be firmly fixed so that it does not rattle inside. As a result, the seat 35 shown in FIG. 1 can be accurately and reliably positioned on the chip mounting seat 32. Note that the outer peripheral surface of the tapered portion 42a of the set screw 42 is configured to engage with the lower edge portion of the fitting groove 36c in FIG. 1 to further strengthen the fixation of the tubular locking member 36. .
【００２５】また、この筒状係止部材３６と嵌合孔３３
を螺合させた形の図８の従来例に比して、嵌合孔３３に
対する筒状係止部材３６のガタつきをなくすことができ
る。The cylindrical locking member 36 and the fitting hole 33 are also provided.
Compared with the conventional example of FIG. 8 in which the screw is screwed, the rattling of the tubular locking member 36 with respect to the fitting hole 33 can be eliminated.
【００２６】そして、シート３５に、図７に示すスロー
アウェイチップ３７を、図１に示すように、その係止孔
３７ｅが筒状係止部材３６の係止孔３６ａに連通するよ
うに且つ四つの逃げ面３７ｃの内二つをチップ取付座３
２の取付座壁面３２ｂ、３２ｂに当接させるように着座
させる。そこで、図７に示すチップ取付ねじ３８を図１
に示すように係止孔３７ｅに挿通して、その頭部３８ａ
を係止孔３７ｅの孔壁に係合させ、チップ取付ねじ３８
の先端部３８ｂを筒状係止部材３６のねじ孔３６ａに螺
着させる。すると、スローアウェイチップ３７は、チッ
プ取付ねじ３８、筒状係止部材３６、止めねじ４２等を
介して工具本体３１に固定されることとなる。従って、
スローアウェイチップ３７を、チップ取付座３２に正確
且つ確実に位置決めされたシート３５上に着座させるこ
とができるので、スローアウェイチップ３７の取付精度
の向上及び位置ずれ防止効果の向上を図ることができ
る。このようにして、スローアウェイチップ３７を工具
本体３１のチップ取付座３２にシート３５を介して着脱
自在に装着することができる。The throw-away tip 37 shown in FIG. 7 is attached to the seat 35 so that its locking hole 37e communicates with the locking hole 36a of the tubular locking member 36 as shown in FIG. Two of the two flanks 37c are attached to the chip mounting seat 3
The second mounting seat wall surfaces 32b, 32b are seated so as to abut. Therefore, the tip mounting screw 38 shown in FIG.
As shown in FIG.
Is engaged with the hole wall of the locking hole 37e, and the chip mounting screw 38
The tip end portion 38b is screwed into the screw hole 36a of the tubular locking member 36. Then, the throw-away tip 37 will be fixed to the tool body 31 via the tip mounting screw 38, the tubular locking member 36, the set screw 42, and the like. Therefore,
Since the throw-away tip 37 can be seated on the seat 35 that is accurately and surely positioned on the tip mounting seat 32, it is possible to improve the attachment accuracy of the throw-away tip 37 and the effect of preventing misalignment. . In this way, the throw-away tip 37 can be removably attached to the tip attachment seat 32 of the tool body 31 via the seat 35.
【００２７】また、スローアウェイチップ３７の係止孔
３７ｅは、チップ取付座３２の嵌合孔３３の中心軸ＣＴ
１（即ち、筒状係止部材３６の中心軸）に対して取付座
壁面３２ｂ、３２ｂから離間する方向に僅かに偏心して
おり、そのため、スローアウェイチップ３７の係止孔３
７ｅを通じて筒状係止部材３６のねじ孔３６ａに螺着さ
れたチップ取付ねじ３８を締め付けていくと、チップ取
付ねじ３８の頭部３８ａの取付座壁面３２ｂ、３２ｂ側
が、スローアウェイチップ３７の係止孔３７ｅの取付座
壁面３２ｂ、３２ｂ側を押圧することとなる。これによ
り、スローアウェイチップ３７の四つの逃げ面３７ｃの
内二つを、チップ取付座３２の取付座壁面３２ｂ、３２
ｂに押し付けることができるので、チップ取付座３２へ
のスローアウェイチップ３７の固定を強固にすることが
できる。よって、スローアウェイチップ３７の位置ずれ
は防止される。Further, the locking hole 37e of the throw-away tip 37 is formed by the central axis CT of the fitting hole 33 of the tip mounting seat 32.
1 (that is, the central axis of the tubular locking member 36) is slightly eccentric in the direction away from the mounting seat wall surfaces 32b, 32b, and therefore, the locking hole 3 of the throw-away tip 37 is provided.
When the tip mounting screw 38 screwed into the screw hole 36a of the tubular locking member 36 is tightened through 7e, the mounting seat wall surfaces 32b and 32b of the head 38a of the tip mounting screw 38 are engaged with the throw-away tip 37. The stopper seat 37e presses the mounting seat wall surfaces 32b, 32b. Thereby, two of the four flanks 37c of the throw-away tip 37 are attached to the attachment seat wall surfaces 32b, 32 of the tip attachment seat 32.
Since it can be pressed against b, the fixing of the throw-away tip 37 to the tip mounting seat 32 can be strengthened. Therefore, the positional displacement of the throw-away tip 37 is prevented.
【００２８】従って、上記実施形態によれば、筒状係止
部材３６と嵌合孔３３を嵌合させるので、筒状係止部材
３６と嵌合孔３３を螺合させた形の図８の従来例に比し
て、嵌合孔３３に対する筒状係止部材３６のガタつきを
なくすことができる。よって、スローアウェイチップ３
７の取付精度を高めることができると共にその位置ずれ
を防止することができる。更に、筒状係止部材３６の内
壁面だけでなく、外壁面にもねじが切られている従来に
比して、筒状係止部材３６の強度を高めることができる
と共に筒状係止部材３６のゆるみを防止することができ
る。Therefore, according to the above-described embodiment, the tubular locking member 36 and the fitting hole 33 are fitted together, so that the tubular locking member 36 and the fitting hole 33 are screwed together in FIG. As compared with the conventional example, the rattling of the tubular locking member 36 with respect to the fitting hole 33 can be eliminated. Therefore, throw-away tip 3
It is possible to improve the mounting accuracy of 7 and prevent the displacement thereof. Further, the strength of the tubular locking member 36 can be enhanced and the strength of the tubular locking member 36 can be increased as compared with the prior art in which not only the inner wall surface of the tubular locking member 36 but also the outer wall surface is threaded. It is possible to prevent the loosening of 36.
【００２９】また、スローアウェイチップ３７を固定す
るチップ取付ねじ３８は、チップ取付座３２の嵌合孔３
３に嵌合した筒状係止部材３６に螺合されるので、図９
の従来例のように、チップ取付座１２に係止部材１６を
装着する位置決め孔１３を形成し、その位置決め孔１３
の底面１３ａに取付ねじ孔１４を形成し、その取付ねじ
孔１４に、スローアウェイチップ１７を固定するチップ
取付ねじ１８が螺合される場合に比して、図１に示すよ
うにスローアウェイチップ３７の係止孔３７ｅと、その
係止孔３７ｅに挿通されたチップ取付ねじ３８が螺着さ
れるねじ孔３６ａとの間隔を短くすることができる。こ
れにより、チップ取付ねじ３８のクランプ強度を高くす
ることができるので、スローアウェイチップ３７の位置
ずれの防止効果の向上を図ることができる。The tip mounting screw 38 for fixing the throw-away tip 37 is provided in the fitting hole 3 of the tip mounting seat 32.
Since it is screwed into the tubular locking member 36 fitted in 3,
As in the conventional example, the positioning hole 13 for mounting the locking member 16 is formed in the chip mounting seat 12, and the positioning hole 13 is formed.
As shown in FIG. 1, as compared with the case where the mounting screw hole 14 is formed in the bottom surface 13a of the base plate and the mounting screw hole 18 for fixing the throw-away chip 17 is screwed into the mounting screw hole 14, as shown in FIG. The distance between the locking hole 37e of 37 and the screw hole 36a into which the chip mounting screw 38 inserted into the locking hole 37e is screwed can be shortened. As a result, the clamping strength of the tip mounting screw 38 can be increased, and the effect of preventing the position of the throw-away tip 37 from being displaced can be improved.
【００３０】従って、上記実施形態によれば、スローア
ウェイチップ３７の取付精度の向上と共に位置ずれの防
止を図ることができる。Therefore, according to the above embodiment, it is possible to improve the mounting accuracy of the throw-away tip 37 and prevent the positional deviation.
【００３１】また、チップ取付座３２は平坦面をなして
いるため、加工精度が高い。よって、スローアウェイチ
ップ３７の取付精度を一層向上することができる。Since the chip mounting seat 32 has a flat surface, the machining accuracy is high. Therefore, the attachment accuracy of the throw-away tip 37 can be further improved.
【００３２】尚、上記実施形態においては、筒状係止部
材３６の基部３６ｂの外壁面に環状の嵌合溝３６ｃを形
成したが、必ずしも、環状である必要はなく、筒状係止
部材３６の中心軸ＣＴ１回りの外壁の一部に形成された
ものであってもよい。In the above-described embodiment, the annular fitting groove 36c is formed on the outer wall surface of the base portion 36b of the tubular locking member 36, but it does not necessarily have to be annular, and the tubular locking member 36 is not necessarily required. It may be formed on a part of the outer wall around the central axis CT1.
【００３３】また、ねじ孔４１を、筒状係止部材３６の
中心軸ＣＴ１に略直交するように形成し、止めねじ４２
の端面を嵌合溝３６ｃに当接させる構成としてもよい。Further, the screw hole 41 is formed so as to be substantially orthogonal to the central axis CT1 of the cylindrical locking member 36, and the set screw 42 is formed.
It is also possible to adopt a configuration in which the end surface of the above is brought into contact with the fitting groove 36c.
【００３４】また、上記実施形態においては、本発明の
スローアウェイチップのクランプ機構をエンドミルに適
用した場合を示したが、本発明のスローアウェイチップ
のクランプ機構は、スローアウェイ式のバイト、ボーリ
ングバー、カッター等にも適用することができることは
勿論である。Further, in the above embodiment, the case where the clamp mechanism of the throw-away tip of the present invention is applied to the end mill is shown. However, the clamp mechanism of the throw-away tip of the present invention is a throw-away type bite or boring bar. Of course, it can also be applied to a cutter or the like.
【００３５】[0035]
【発明の効果】請求項１記載のスローアウェイチップの
クランプ機構によれば、シートをチップ取付座に着座さ
せると共に、チップ取付座の嵌合孔に、筒状係止部材の
基部を挿通嵌合させ、その筒状係止部材を回転させて、
偏心した端部外壁面の突き出し部を、取付座壁面側に向
けることにより、シートを突き出し部と取付座壁面との
間で挟み付けることができる。また、筒状係止部材は、
工具本体に貫通形成されたねじ孔に止めねじをねじ込む
ことにより、止めねじが筒状係止部材の嵌合溝に嵌合し
て固定される。これにより、シートをチップ取付座に正
確且つ確実に位置決めすることができる。According to the clamp mechanism of the throw-away tip of the first aspect, the seat is seated on the tip mounting seat, and the base portion of the tubular locking member is inserted and fitted into the fitting hole of the tip mounting seat. And rotate the tubular locking member,
The seat can be sandwiched between the protruding portion and the mounting seat wall surface by directing the protruding portion of the eccentric end outer wall surface toward the mounting seat wall surface side. In addition, the tubular locking member,
By screwing the set screw into the screw hole formed through the tool body, the set screw is fitted and fixed in the fitting groove of the tubular locking member. Accordingly, the seat can be accurately and surely positioned on the chip mounting seat.
【００３６】そして、スローアウェイチップをシートに
着座させた後、チップ取付ねじをスローアウェイチップ
の係止孔から筒状係止部材のねじ孔に螺着させる。する
と、スローアウェイチップは、チップ取付ねじ及び筒状
係止部材等によりシートを介してチップ取付座側にクラ
ンプされることとなる。従って、スローアウェイチップ
は、正確且つ確実に位置決めされたシート上に着座され
ることとなるので、その取付精度及び位置ずれ防止効果
が向上される。Then, after the throw-away tip is seated on the seat, the tip mounting screw is screwed from the engaging hole of the throw-away tip into the screw hole of the tubular engaging member. Then, the throw-away tip is clamped to the tip mounting seat side via the seat by the tip mounting screw and the tubular locking member. Therefore, the throw-away tip is seated on the seat that is accurately and surely positioned, so that the mounting accuracy and the effect of preventing the positional deviation are improved.
【００３７】また、上述の筒状係止部材と嵌合孔を螺合
させた形の図８の従来例に比して、嵌合孔に対する筒状
係止部材のガタつきをなくすことができる。これによっ
ても、スローアウェイチップの取付精度を高めることが
できると共にその位置ずれの防止を図ることができる。
更に、筒状係止部材の内壁面だけでなく、外壁面にもね
じが切られている従来に比して、筒状係止部材の強度を
高めることができると共に筒状係止部材のゆるみを防止
することができる。Further, the rattling of the tubular locking member with respect to the fitting hole can be eliminated as compared with the conventional example of FIG. 8 in which the tubular locking member and the fitting hole are screwed together. . This also makes it possible to improve the attachment accuracy of the throw-away tip and prevent the positional deviation thereof.
Furthermore, the strength of the tubular locking member can be increased and the tubular locking member can be loosened as compared with the conventional case in which not only the inner wall surface of the tubular locking member but also the outer wall surface is threaded. Can be prevented.
【００３８】また、スローアウェイチップをクランプす
るチップ取付ねじは、チップ取付座の嵌合孔に嵌合した
筒状係止部材に螺着されるので、図９の従来例のよう
に、チップ取付座に筒状係止部材を装着する位置決め孔
を形成し、その位置決め孔の底面に取付ねじ孔を形成
し、その取付ねじ孔に、スローアウェイチップをクラン
プするチップ取付ねじが螺着される場合に比して、スロ
ーアウェイチップの係止孔とチップ取付ねじが螺着され
るねじ孔との間隔を短くすることができる。すると、チ
ップ取付ねじのクランプ強度が高くなるので、スローア
ウェイチップの位置ずれの防止効果の向上を図ることが
できる。Further, since the tip mounting screw for clamping the throw-away tip is screwed to the cylindrical locking member fitted in the fitting hole of the tip mounting seat, as in the conventional example of FIG. When a positioning hole for mounting the tubular locking member is formed on the seat, a mounting screw hole is formed on the bottom surface of the positioning hole, and a chip mounting screw for clamping the throw-away tip is screwed into the mounting screw hole. Compared with the above, the distance between the locking hole of the throw-away tip and the screw hole into which the tip mounting screw is screwed can be shortened. Then, the clamping strength of the tip mounting screw is increased, so that the effect of preventing the positional deviation of the throw-away tip can be improved.
【００３９】従って、本発明によれば、スローアウェイ
チップの取付精度の向上と共に位置ずれの防止を図るこ
とができる。Therefore, according to the present invention, it is possible to improve the mounting accuracy of the throw-away tip and prevent the positional deviation.
【００４０】請求項２記載のスローアウェイチップのク
ランプ機構は、上記効果に加えて、筒状係止部材の端部
の端面に形成された締付穴を用いて、レンチ、ねじ回し
等により筒状係止部材を容易に回転させることができ
る。よって、筒状係止部材の端部外壁面の突き出し部と
取付座壁面とによるシートの挟み付けを簡便にすること
ができる。In addition to the above effects, the throw-away tip clamping mechanism according to the present invention uses a tightening hole formed in the end face of the end of the tubular locking member, and uses a wrench, a screwdriver, or the like to remove the cylinder. The locking member can be easily rotated. Therefore, it is possible to easily sandwich the seat between the protruding portion of the outer wall surface of the end of the tubular locking member and the wall surface of the mounting seat.
【００４１】請求項３記載のスローアウェイチップのク
ランプ機構によれば、上記効果に加えて、止めねじを締
め付けていくと、そのテーパー部の外周面の、筒状係止
部材の嵌合溝に嵌合する部分が徐々に拡径して筒状係止
部材を嵌合孔の壁面に押し付けていくこととなるので、
その押し付けを強く行なうことができる。よって、嵌合
孔に対する筒状係止部材の固定を強固にすることがで
き、引いてはスローアウェイチップの固定を強固にする
ことができる。According to the clamp mechanism of the throw-away tip of the third aspect, in addition to the above effect, when the set screw is tightened, the outer peripheral surface of the taper portion is fitted into the fitting groove of the cylindrical locking member. Since the diameter of the fitting part gradually increases and the tubular locking member is pressed against the wall surface of the fitting hole,
The pressing can be performed strongly. Therefore, the tubular locking member can be firmly fixed to the fitting hole, and thus the throw-away tip can be firmly fixed.
【００４２】請求項４記載のスローアウェイチップのク
ランプ機構によれば、上記効果に加えて、スローアウェ
イチップの係止孔がチップ取付座に着座した状態で嵌合
孔の中心軸に対して取付座壁面から離間する方向に偏心
していることにより、スローアウェイチップの係止孔を
通じて取付ねじ孔に螺着されたチップ取付ねじを締め付
けていくと、チップ取付ねじの頭部の取付座壁面側が、
スローアウェイチップの係止孔の取付座壁面側を押圧す
ることとなる。これにより、スローアウェイチップを取
付座壁面に押し付けることができるので、チップ取付座
へのスローアウェイチップの固定を更に強固にすること
ができる。よって、スローアウェイチップの位置ずれ防
止効果を更に高めることができる。According to the clamp mechanism of the throw-away tip of the fourth aspect, in addition to the above-mentioned effect, the throw-away tip is attached to the center axis of the fitting hole while the engaging hole of the throw-away tip is seated on the tip mounting seat. Due to the eccentricity in the direction away from the seat wall surface, when tightening the chip mounting screw screwed into the mounting screw hole through the locking hole of the throw-away tip, the mounting seat wall surface side of the head of the chip mounting screw becomes
The locking hole of the throw-away tip is pressed against the wall surface of the mounting seat. As a result, the throw-away tip can be pressed against the wall surface of the mounting seat, so that the throw-away tip can be more firmly fixed to the chip mounting seat. Therefore, the effect of preventing the positional deviation of the throw-away tip can be further enhanced.
【図１】 本発明のスローアウェイチップのクランプ機
構の一実施形態を示す正面断面図である。FIG. 1 is a front sectional view showing an embodiment of a clamp mechanism for a throw-away tip according to the present invention.
【図２】 図１のスローアウェイチップのクランプ機構
のＡ−Ａ断面図である。FIG. 2 is a cross-sectional view taken along the line AA of the clamp mechanism of the throw-away tip shown in FIG.
【図３】 図１のスローアウェイチップのクランプ機構
のＢ−Ｂ断面図である。FIG. 3 is a cross-sectional view taken along the line BB of the clamp mechanism of the throw-away tip shown in FIG.
【図４】 図１のスローアウェイチップのクランプ機構
の筒状係止部材を示す側面図である。4 is a side view showing a tubular locking member of the clamp mechanism of the throw-away tip of FIG. 1. FIG.
【図５】 図１の筒状係止部材の別の形態を示す平面図
である。5 is a plan view showing another form of the tubular locking member of FIG. 1. FIG.
【図６】 図１のスローアウェイチップのクランプ機構
を適用したエンドミルを示す図である。FIG. 6 is a diagram showing an end mill to which the clamp mechanism of the throw-away tip of FIG. 1 is applied.
【図７】 図１のスローアウェイチップのクランプ機構
の分解図である。FIG. 7 is an exploded view of a clamp mechanism of the throw-away tip of FIG.
【図８】 従来の二重ねじ機構を用いたスローアウェイ
チップのクランプ機構を示す図である。FIG. 8 is a view showing a clamp mechanism of a throw-away tip using a conventional double screw mechanism.
【図９】 二重ねじ機構を用いない従来のスローアウェ
イチップのクランプ機構の一例を示す図である。FIG. 9 is a diagram showing an example of a conventional clamp mechanism for a throw-away tip that does not use a double screw mechanism.
３１…工具本体、３２…チップ取付座、３２ａ…取付座
底面、３２ｂ…取付座壁面、３３…嵌合孔、３５…シー
ト、３５ｄ…貫通孔、３６…筒状係止部材、３６ａ…ね
じ孔、３６ｂ…基部、３６ｃ…嵌合溝、３６ｄ…端部、
３６ｇ…六角穴（締付穴）、３６ｈ…すりわり（締付
穴）、３６ｉ…突き出し部、３７…スローアウェイチッ
プ、３７ｅ…係止孔、３８…チップ取付ねじ、４１…ね
じ孔、４２…止めねじ、４２ａ…テーパー部 、ＣＴ１
…中心軸31 ... Tool body, 32 ... Tip mounting seat, 32a ... Mounting seat bottom surface, 32b ... Mounting seat wall surface, 33 ... Fitting hole, 35 ... Sheet, 35d ... Through hole, 36 ... Cylindrical locking member, 36a ... Screw hole , 36b ... Base part, 36c ... Fitting groove, 36d ... End part,
36g ... Hexagonal hole (tightening hole), 36h ... Sliding (tightening hole), 36i ... Projection part, 37 ... Throwaway tip, 37e ... Locking hole, 38 ... Tip mounting screw, 41 ... Screw hole, 42 ... Set screw, 42a ... Tapered part, CT1
… Center axis
Claims (4)
てスローアウェイチップを着座させ、前記スローアウェ
イチップに形成された係止孔にチップ取付ねじを挿通し
て螺着することにより該スローアウェイチップを前記チ
ップ取付座側にクランプするようにしたスローアウェイ
チップのクランプ機構であって、 前記チップ取付座は、嵌合孔が形成された取付座底面
と、該取付座底面から屹立した取付座壁面とからなり、 前記シートには、前記嵌合孔に連通する貫通孔が形成さ
れ、 該シートの貫通孔と前記チップ取付座の嵌合孔には、内
部にねじ孔を有する筒状係止部材が挿通され、 前記筒状係止部材の基部は、前記取付座底面の嵌合孔に
嵌合され、 該筒状係止部材の基部の外壁面は、嵌合溝を有し、 前記工具本体は、前記筒状係止部材の外壁面の嵌合溝に
向けて形成されたねじ孔を有し、 該ねじ孔には、前記筒状係止部材の嵌合溝に嵌合する止
めねじが螺着され、 前記筒状係止部材の端部の外壁面は、前記嵌合孔の中心
軸に対して前記取付座壁面側に偏心して形成され、 前記シートは、該筒状係止部材の端部の外壁面の突き出
し部と前記取付座壁面との間に挟持され、 前記スローアウェイチップをクランプする前記チップ取
付ねじは、前記筒状係止部材のねじ孔に螺着されること
を特徴とするスローアウェイチップのクランプ機構。1. A throw-away tip is seated on a tip mounting seat of a tool main body via a seat, and a tip mounting screw is inserted into and screwed into a locking hole formed in the throw-away tip. A throwaway tip clamping mechanism for clamping a tip to the tip mounting seat side, wherein the tip mounting seat includes a bottom surface of a mounting seat having a fitting hole, and a mounting seat standing upright from the bottom surface of the mounting seat. A through-hole that communicates with the fitting hole is formed in the seat, and the through-hole of the seat and the fitting hole of the chip mounting seat have a cylindrical locking structure having a screw hole inside. A member is inserted, a base portion of the tubular locking member is fitted into a fitting hole on the bottom surface of the mounting seat, and an outer wall surface of the base portion of the tubular locking member has a fitting groove, The main body of the tubular locking member There is a screw hole formed toward the fitting groove of the outer wall surface, and a set screw that fits into the fitting groove of the tubular locking member is screwed into the screw hole, and the tubular locking The outer wall surface of the end portion of the member is formed eccentrically to the mounting seat wall surface side with respect to the central axis of the fitting hole, and the seat is formed with a protruding portion of the outer wall surface of the end portion of the tubular locking member. The throw-away tip clamping mechanism is characterized in that the tip mounting screw that is clamped between the attachment seat wall surface and clamps the throw-away tip is screwed into a screw hole of the tubular locking member.
付穴が形成されていることを特徴とする請求項１記載の
スローアウェイチップのクランプ機構。2. The clamp mechanism for a throw-away tip according to claim 1, wherein a tightening hole is formed in an end surface of an end portion of the tubular locking member.
は、前記筒状係止部材の外壁面の嵌合溝を掠めるように
形成され、 前記止めねじの先端部には、テーパー部が形成され、 該テーパー部の外周面が前記嵌合溝に嵌合されているこ
とを特徴とする請求項１又は２記載のスローアウェイチ
ップのクランプ機構。3. The screw hole formed in the tool main body is formed so as to fit a fitting groove on an outer wall surface of the tubular locking member, and a taper portion is formed at a tip end portion of the set screw. The clamping mechanism for the throw-away tip according to claim 1 or 2, wherein an outer peripheral surface of the tapered portion is fitted in the fitting groove.
前記チップ取付座に着座した状態で前記嵌合孔の中心軸
に対して前記取付座壁面から離間する方向に偏心してい
ることを特徴とする請求項１ないし３のいずれかに記載
のスローアウェイチップのクランプ機構。4. The locking hole of the throw-away tip,
The throw-away tip according to any one of claims 1 to 3, wherein the throw-away tip is eccentric with respect to the central axis of the fitting hole in a direction away from the mounting seat wall surface while being seated on the tip mounting seat. Clamp mechanism.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7183088A JPH0929514A (en) | 1995-07-19 | 1995-07-19 | Clamp mechanism for throw-away tip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7183088A JPH0929514A (en) | 1995-07-19 | 1995-07-19 | Clamp mechanism for throw-away tip |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0929514A true JPH0929514A (en) | 1997-02-04 |
Family
ID=16129555
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7183088A Withdrawn JPH0929514A (en) | 1995-07-19 | 1995-07-19 | Clamp mechanism for throw-away tip |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0929514A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3171333U (en) * | 2011-08-05 | 2011-10-27 | レアック・ジャパン株式会社 | Dry noodle container |
| US20120009030A1 (en) * | 2009-01-07 | 2012-01-12 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool For Machining, In Particular Straight Turning Tool |
| US20120230790A1 (en) * | 2009-12-08 | 2012-09-13 | Tungaloy Corporation | Cutting Tool with a Replaceable Blade Edge |
-
1995
- 1995-07-19 JP JP7183088A patent/JPH0929514A/en not_active Withdrawn
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20120009030A1 (en) * | 2009-01-07 | 2012-01-12 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool For Machining, In Particular Straight Turning Tool |
| US8747032B2 (en) * | 2009-01-07 | 2014-06-10 | Hartmetall-Werkzeugfabrik Paul Horn Gmbh | Tool for machining, in particular straight turning tool |
| US20120230790A1 (en) * | 2009-12-08 | 2012-09-13 | Tungaloy Corporation | Cutting Tool with a Replaceable Blade Edge |
| US9089908B2 (en) * | 2009-12-08 | 2015-07-28 | Tungaloy Corpration | Tip-replaceable cutting tool |
| JP3171333U (en) * | 2011-08-05 | 2011-10-27 | レアック・ジャパン株式会社 | Dry noodle container |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| A300 | Withdrawal of application because of no request for examination |
Free format text: JAPANESE INTERMEDIATE CODE: A300 Effective date: 20021001 |