JPH08229706A - Round piece tip holder - Google Patents

Round piece tip holder

Info

Publication number
JPH08229706A
JPH08229706A JP7033198A JP3319895A JPH08229706A JP H08229706 A JPH08229706 A JP H08229706A JP 7033198 A JP7033198 A JP 7033198A JP 3319895 A JP3319895 A JP 3319895A JP H08229706 A JPH08229706 A JP H08229706A
Authority
JP
Japan
Prior art keywords
chip
round piece
tip
piece chip
clamper
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.)
Pending
Application number
JP7033198A
Other languages
Japanese (ja)
Inventor
Kazuhiko Tanaka
中 一 彦 田
Hidenori Watanabe
辺 秀 徳 渡
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.)
Nissan Motor Co Ltd
Original Assignee
Nissan Motor Co Ltd
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 Nissan Motor Co Ltd filed Critical Nissan Motor Co Ltd
Priority to JP7033198A priority Critical patent/JPH08229706A/en
Publication of JPH08229706A publication Critical patent/JPH08229706A/en
Pending legal-status Critical Current

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  • Cutting Tools, Boring Holders, And Turrets (AREA)

Abstract

PURPOSE: To carry out the precise positioning of a cutting edge by providing a component force generation part, arranged coaxially with a round piece tip, for dividing a tip holding force given to the round piece tip from a cramper by contacting with the tip push-press part of the cramper to a tip placing part direction push-press force and a tip receiving part direction push-press force. CONSTITUTION: When a tip holding force F is given in a round piece tip 3 side by rotating a cramper bolt 4 in a tightening in direction, the tip holding force F is divided to a tip placing part direction push-press force Fa and a tip receiving part direction push-press force Fb by a hemisphere shape component force generation part 7A. As the round piece tip 3 is pushed against the tip receiving part 2a by the tip receiving part direction push-press force Fb, the position slip amount of a cutting edge 3a of the round piece tip 3 in the time of before turning and after turning is affected by only the roundness of the round piece tip 3. In other words, the slip is scarcely generated on the position of the cutting edge 3a at the time before turning and after turning of the round piece tip 3. Therefore, a size accuracy is stabilized.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は、主として仕上げ旋削加
工に用いられる丸駒チップを回動可能に保持する丸駒チ
ップホルダに関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a round piece chip holder that rotatably holds a round piece chip mainly used for finishing turning.

【０００２】[0002]

【従来の技術】従来、上記した丸駒チップホルダとして
は、例えば、図５に示すものがあった。2. Description of the Related Art Conventionally, as the above-mentioned round piece chip holder, for example, there is one shown in FIG.

【０００３】図５に示すように、この丸駒チップホルダ
１０１は、ホルダ本体１０２の先端部分に設けられたチ
ップ載置部１０３と、このチップ載置部１０３に回動可
能に載置される軸１０４と、この軸１０４の一端側に中
心孔１０５ａを嵌合してねじ止めされた丸駒チップ１０
５の上側平面部１０５ｂに押圧平面部１０６ｂを当接さ
せてチップ載置部１０３との間で軸１０４とともに挾持
・解放可能としたクランパ１０６を備えており、クラン
パ１０６はチップ挾持方向にばね付勢されたボルト１０
７によりホルダ本体１０２に保持されている。As shown in FIG. 5, the round piece chip holder 101 is rotatably mounted on the chip mounting portion 103 provided at the tip of the holder body 102 and the chip mounting portion 103. A shaft 104 and a round piece chip 10 in which a center hole 105a is fitted to one end of the shaft 104 and screwed.
5, a pressing flat surface portion 106b is brought into contact with the upper flat surface portion 105b, and a clamper 106 that can be held / released together with the shaft 104 with the chip mounting portion 103 is provided. The clamper 106 is provided with a spring in the chip holding direction. Energized bolt 10
It is held in the holder body 102 by 7.

【０００４】そして、この丸駒チップホルダ１０１で
は、ホルダ本体１０２にボルト１０７をチップ解放方向
に駆動可能としたアンクランプロッド１０８を長手方向
に設け、また、軸１０４の他端にピニオン１０９を固着
すると共にホルダ本体１０２にピニオン１０９と噛み合
うラック１１０を摺動可能に設けており、図外の空圧装
置によりアンクランプロッド１０８をホルダ本体１０２
の先端側に移動させてボルト１０７をチップ解放方向に
駆動して、クランパ１０６をアンクランプ状態とすると
共に、同じく図外の空圧装置によりラック１１０をホル
ダ本体１０２の先端側に摺動させてピニオン１０９を回
動させることにより、軸１０４を介して丸駒チップ１０
５を回動させるようにしている。In this round piece chip holder 101, an unclamp rod 108 capable of driving a bolt 107 in the chip releasing direction is provided in the holder body 102 in the longitudinal direction, and a pinion 109 is fixed to the other end of the shaft 104. In addition, a rack 110 that meshes with the pinion 109 is slidably provided on the holder body 102, and the unclamp rod 108 is attached to the holder body 102 by a pneumatic device (not shown).
Is moved toward the tip side of the holder body 102 by driving the bolt 107 in the tip releasing direction to bring the clamper 106 into an unclamped state and also by an air pressure device (not shown). By rotating the pinion 109, the round piece chip 10 is moved through the shaft 104.
5 is rotated.

【０００５】[0005]

【発明が解決しようとする課題】ところが、従来におけ
る丸駒チップホルダ１０１では、クランパ１０６の押圧
平面部１０６ｂを丸駒チップ１０５の上側平面部１０５
ｂに当接させてチップ載置部１０３との間でこの丸駒チ
ップ１０５を挾持するようにしているため、丸駒チップ
１０５を挾持するに際して、クランパ１０６の押圧平面
部１０６ｂと丸駒チップ１０５の上側平面部１０５ｂと
の間に切り屑などの異物を挟み込んだ場合には、加工上
好ましくない部分に集中荷重が発生して丸駒チップ１０
５に割れや欠損などの不具合が生じてしまう恐れがある
という問題を有していた。However, in the conventional round piece chip holder 101, the pressing flat surface portion 106b of the clamper 106 is replaced with the upper flat surface portion 105 of the round piece chip 105.
Since the round piece 105 is held between the chip mounting portion 103 and the b, the round flat chip 105 is held by the clamp flat surface 106b of the clamper 106 and the round piece 105. When foreign matter such as chips is sandwiched between the upper flat surface portion 105b and the upper flat surface portion 105b, a concentrated load is generated in a portion which is unfavorable for processing and the round piece 10
5 had a problem that defects such as cracks and defects might occur.

【０００６】また、上記丸駒チップホルダ１０１におい
て、丸駒チップ１０５はその中心孔１０５ａを一端側に
嵌合してねじ止めされた軸１０４とともに回動する、す
なわち、丸駒チップ１０５はその中心孔１０５ａを中心
にして回動することから、丸駒チップ１０５の中心孔１
０５ａと切れ刃である外周縁との同軸度がよくない場合
には、丸駒チップ１０５の回動前と回動後とにおいて切
れ刃の位置がずれてしまい、安定した寸法精度を得るこ
とができないという問題を有しており、これらの問題を
解決することが従来の課題であった。Further, in the above-mentioned round piece chip holder 101, the round piece chip 105 rotates together with the shaft 104 screwed by fitting the center hole 105a at one end side thereof, that is, the round piece chip 105 has its center. Since it rotates around the hole 105a, the center hole 1 of the circular piece 105
If the degree of concentricity between 05a and the outer peripheral edge which is the cutting edge is not good, the position of the cutting edge is displaced before and after the rotation of the round piece chip 105, and stable dimensional accuracy can be obtained. There is a problem that it cannot be done, and it has been a conventional problem to solve these problems.

【０００７】[0007]

【発明の目的】本発明は、上記した従来の課題に着目し
てなされたもので、丸駒チップを挾持する際の切り屑な
どの異物の挟み込みを極力抑えて、丸駒チップの割れや
欠損の発生を防止することができると共に、丸駒チップ
の回動前後における切れ刃の高精度な位置決めを図っ
て、寸法精度を常に安定させることが可能である丸駒チ
ップホルダを提供することを目的としている。SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and it is possible to suppress the entrapment of foreign matters such as chips when holding a round piece chip as much as possible, and to break or break the round piece chip. It is an object of the present invention to provide a round piece tip holder capable of preventing the occurrence of the occurrence of the round piece and positioning the cutting edge with high precision before and after the rotation of the round piece tip, and constantly stabilizing the dimensional accuracy. I am trying.

【０００８】[0008]

【課題を解決するための手段】本発明の請求項１に係わ
る丸駒チップホルダは、ホルダ本体の先端部分に設けら
れて丸駒チップを回動可能に載置するチップ載置部と、
前記チップ載置部との間で丸駒チップを挾持・解放可能
としたクランパを備えた丸駒チップホルダにおいて、前
記ホルダ本体の先端部分には、前記丸駒チップの軸心よ
りもワークと反対側に位置するチップ外周面と当接する
チップ受部を設けると共に、前記クランパには、前記丸
駒チップの軸心よりもワーク側に位置するチップ押圧部
を設け、前記丸駒チップ側に、当該丸駒チップと同軸に
配置されかつ前記クランパのチップ押圧部と当接して当
該クランパから丸駒チップに付与されるチップ挾持力を
チップ載置部方向押圧力およびチップ受部方向押圧力に
分ける分力発生部を設けた構成としたことを特徴として
おり、この丸駒チップホルダの構成を前述した従来の課
題を解決するための手段としている。According to a first aspect of the present invention, there is provided a round piece chip holder, which is provided at a tip end portion of a holder main body and which has a round piece chip rotatably mounted thereon.
In a round piece chip holder provided with a clamper capable of gripping and releasing a round piece chip from the tip mounting portion, a tip end portion of the holder body is opposite to a work piece with respect to an axis of the round piece chip. A chip receiving portion that comes into contact with the outer peripheral surface of the chip located on the side, and the clamper is provided with a chip pressing portion located on the workpiece side with respect to the shaft center of the round piece chip. The chip clamping force which is arranged coaxially with the round piece chip and is brought into contact with the chip pressing portion of the clamper and applied to the round piece chip from the clamper is divided into a pressing force in the chip mounting portion direction and a pressing force in the chip receiving portion direction. The present invention is characterized in that a force generating portion is provided, and the configuration of this round piece chip holder serves as means for solving the above-mentioned conventional problems.

【０００９】本発明の請求項２に係わる丸駒チップホル
ダにおいて、分力発生部はクランパと丸駒チップとの間
に位置して前記丸駒チップと面接触するスペーサに設け
てある構成とし、本発明の請求項３に係わる丸駒チップ
ホルダでは、スペーサの丸駒チップとの接触面における
外周縁と丸駒チップの切れ刃との間隔を２ｍｍ以上とし
た構成としている。In the round piece chip holder according to claim 2 of the present invention, the component force generating portion is provided on a spacer which is located between the clamper and the round piece chip and is in surface contact with the round piece chip. In the round piece chip holder according to claim 3 of the present invention, the distance between the outer peripheral edge of the spacer on the contact surface with the round piece chip and the cutting edge of the round piece chip is 2 mm or more.

【００１０】本発明の請求項４に係わる丸駒チップホル
ダにおいて、分力発生部は丸駒チップに一体で設けてあ
る構成とし、本発明の請求項５に係わる丸駒チップホル
ダでは、分力発生部の丸駒チップ本体部分側における外
周縁と丸駒チップ本体部分の切れ刃との間隔を２ｍｍ以
上とした構成としている。In the round piece chip holder according to claim 4 of the present invention, the component force generating portion is provided integrally with the round piece chip, and in the round piece chip holder according to claim 5 of the present invention, The distance between the outer peripheral edge of the generating portion on the round piece chip body portion side and the cutting edge of the round piece chip body portion is set to 2 mm or more.

【００１１】本発明の請求項６に係わる丸駒チップホル
ダにおいて、クランパのチップ押圧部はチップ受部方向
を向くチップ押圧斜面部としてあると共に、分力発生部
は半球状としてある構成とし、本発明の請求項７に係わ
る丸駒チップホルダでは、半球状をなす分力発生部の半
径を３ｍｍ以上とした構成としている。In the round piece chip holder according to claim 6 of the present invention, the chip pressing portion of the clamper is a chip pressing sloped surface facing the chip receiving portion, and the component force generating portion is hemispherical. In the round piece tip holder according to claim 7 of the invention, the radius of the hemispherical component force generating portion is set to 3 mm or more.

【００１２】本発明の請求項８に係わる丸駒チップホル
ダにおいて、クランパのチップ押圧部はチップ載置部方
向を向く断面半円形状をなすチップ押圧突部としてある
と共に、分力発生部は円錐台状としてある構成としてい
る。In the round piece chip holder according to claim 8 of the present invention, the chip pressing portion of the clamper is a chip pressing protrusion having a semicircular cross section facing the chip mounting portion, and the component force generating portion is conical. It is configured as a trapezoid.

【００１３】[0013]

【発明の作用】本発明の請求項１に係わる丸駒チップホ
ルダでは、上記した構成としているので、丸駒チップを
挾持するに際して、クランパのチップ押圧部を丸駒チッ
プ側の分力発生部に当接させてチップ挾持力を丸駒チッ
プ側に付与すると、分力発生部によりチップ挾持力がチ
ップ載置部方向押圧力およびチップ受部方向押圧力に分
けられ、丸駒チップはチップ載置部方向押圧力によりチ
ップ載置部に押し付けられて強固に保持されることとな
る。Since the round piece chip holder according to claim 1 of the present invention has the above-mentioned structure, when the round piece chip is held, the chip pressing portion of the clamper becomes the component force generating portion on the round piece chip side. When abutting force is applied to the round piece chip side by abutting, the chip holding force is divided by the component force generating part into the pushing force in the chip mounting part direction and the pushing force in the chip receiving part direction. It is pressed against the chip mounting part by the pressing force in the part direction and firmly held.

【００１４】このとき、丸駒チップはチップ受部方向押
圧力によりホルダ本体のチップ受部にも押し付けらてい
ることから、丸駒チップの回動前と回動後とにおける切
れ刃の位置決め精度は、丸駒チップの真円度だけに影響
されることとなり、したがって、従来よりも安定した寸
法精度が得られることとなる。At this time, since the round piece chip is pressed against the chip receiving portion of the holder body by the pressing force in the direction of the chip receiving portion, the positioning accuracy of the cutting edge before and after the rotation of the round piece chip is high. Is affected only by the roundness of the round piece chip, and therefore, more stable dimensional accuracy than before can be obtained.

【００１５】また、本発明の請求項２に係わる丸駒チッ
プホルダにおいて、分力発生部で生じたチップ載置部方
向押圧力は、スペーサを介して丸駒チップに伝えられる
が、スペーサと丸駒チップとは面接触しているため、チ
ップ載置部方向押圧力は分散荷重として丸駒チップに伝
えられることとなり、丸駒チップを挾持するに際して、
クランパのチップ押圧部とスペーサの分力発生部との間
に切り屑などの異物を挟み込んだとしても、丸駒チップ
の割れや欠損の発生は防がれることとなり、本発明の請
求項３に係わる丸駒チップホルダでは、加工時における
切り屑の流出を滞らせることなく、クランパによる挾持
が確実に行われることとなる。Further, in the round piece chip holder according to the second aspect of the present invention, the pressing force in the chip mounting portion direction generated in the component force generating portion is transmitted to the round piece chip through the spacer, but the spacer and the round piece Since the chip chips are in surface contact with each other, the pressing force in the chip mounting portion direction is transmitted as a distributed load to the round chip chips, and when the round chip chips are held,
Even if foreign matter such as chips is sandwiched between the chip pressing portion of the clamper and the component force generating portion of the spacer, cracking or chipping of the round piece chip can be prevented, and the invention can be achieved according to claim 3 of the present invention. In the related round piece chip holder, the clamper reliably holds the chips without delaying the outflow of chips during processing.

【００１６】さらに、本発明の請求項４に係わる丸駒チ
ップホルダでは、上記した構成としているので、部品点
数の削減が図られるうえ、従来のように、丸駒チップに
中心孔を設ける必要がないことから、小径丸駒チップの
保持も支障なく行われることになり、その結果、小径丸
駒チップの実現に寄与することとなり、加えて、請求項
１に係わる丸駒チップホルダと同様に、丸駒チップはチ
ップ受部方向押圧力によりホルダ本体のチップ受部に押
し付けられることから、丸駒チップの回動前後における
切れ刃の位置決め精度は、丸駒チップの真円度のみによ
り決定され、その結果、従来よりも安定した寸法精度が
得られることとなり、本発明の請求項５に係わる丸駒チ
ップホルダでは、請求項３に係わる丸駒チップホルダと
同様に、加工時における切り屑の流出に支障を来すこと
なく、クランパによる挾持が確実に行われることとな
る。Furthermore, since the round piece chip holder according to claim 4 of the present invention has the above-mentioned structure, the number of parts can be reduced and it is necessary to provide a center hole in the round piece chip as in the conventional case. Since it does not exist, the small-diameter round piece chip can be held without any trouble, and as a result, it contributes to the realization of the small-diameter round piece chip. In addition, like the round piece chip holder according to claim 1, Since the round piece chip is pressed against the chip receiving portion of the holder body by the pressing force in the direction of the chip receiving portion, the positioning accuracy of the cutting edge before and after the rotation of the round piece chip is determined only by the roundness of the round piece chip. As a result, more stable dimensional accuracy than the conventional one can be obtained, and the round piece chip holder according to claim 5 of the present invention is similar to the round piece chip holder according to claim 3 during processing. Without hindering the outflow of kicking chips, so that the pinching by the clamper is reliably performed.

【００１７】さらにまた、本発明の請求項６に係わる丸
駒チップホルダでは、上記した構成としているので、ク
ランパのチップ押圧斜面部と半球状をなす分力発生部と
の接触面積が僅かなものとなって、丸駒チップを挾持す
る際に切り屑などの異物を挟み込む可能性が極めて少な
くなり、本発明の請求項７に係わる丸駒チップホルダで
は、加工時における切り屑の流出に障害をもたらすこと
なく、クランパによる挾持がより一層確実に行われるこ
ととなる。Furthermore, since the round piece chip holder according to claim 6 of the present invention is configured as described above, the contact area between the chip pressing slope portion of the clamper and the hemispherical component force generating portion is small. As a result, the possibility that foreign matter such as chips will be caught when holding the round piece chip becomes extremely small, and the round piece chip holder according to claim 7 of the present invention has an obstacle to the outflow of chips during processing. The holding by the clamper will be carried out more reliably without bringing it.

【００１８】さらにまた、本発明の請求項８に係わる丸
駒チップホルダでは、クランパのチップ押圧突部と円錐
台状をなす分力発生部の円錐面とが微少面積で接触する
こととなり、請求項６に係わる丸駒チップホルダと同じ
く、丸駒チップを挾持する際には、切り屑などの異物を
挟み込む可能性が極めて少なくなる。Furthermore, in the round piece chip holder according to claim 8 of the present invention, the chip pressing protrusion of the clamper and the conical surface of the truncated cone-shaped component force generating portion are in contact with each other in a minute area. Similar to the round-piece insert holder according to item 6, when holding the round-piece insert, the possibility of pinching foreign matter such as chips becomes extremely small.

【００１９】[0019]

【実施例】以下、本発明を図面に基づいて説明する。DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below with reference to the drawings.

【００２０】［第１実施例］図１は本発明に係わる丸駒
チップホルダの一実施例を示している。[First Embodiment] FIG. 1 shows an embodiment of a round piece chip holder according to the present invention.

【００２１】図１（ａ），（ｂ）に示すように、この丸
駒チップホルダ１は、ホルダ本体２の先端部分（図示左
端部分）に設けられて丸駒チップ３を回動可能に載置す
るチップ載置部２ａと、ホルダ本体２の上面にクランプ
ボルト４を介して取り付けられてこのクランプボルト４
の回転操作によりチップ載置部２ａとの間で丸駒チップ
３を挾持・解放可能としたクランパ５を備えており、ホ
ルダ本体２の先端部分でかつチップ載置部２ａに隣接す
る部分には、チップ載置部２ａ上における丸駒チップ３
の軸心よりもワークＷと反対側に位置するチップ外周面
３ｂと当接するチップ受部２ｂが設けてあると共に、ク
ランパ５には、丸駒チップ３の軸心よりもワークＷ側に
位置しかつチップ受部２ｂ方向を向くチップ押圧斜面部
（チップ押圧部）５ａが設けてある。As shown in FIGS. 1 (a) and 1 (b), this round piece chip holder 1 is provided at the tip portion (left end portion in the drawing) of a holder body 2 and rotatably mounts a round piece chip 3. The chip mounting portion 2a to be mounted and the clamp bolt 4 mounted on the upper surface of the holder body 2 via the clamp bolt 4
It is provided with a clamper 5 capable of gripping and releasing the round piece chip 3 with the chip mounting portion 2a by the rotating operation of, and the tip end portion of the holder body 2 and the portion adjacent to the chip mounting portion 2a. , Round piece chip 3 on the chip mounting portion 2a
Is provided with a chip receiving portion 2b that comes into contact with a chip outer peripheral surface 3b located on the side opposite to the work W with respect to the shaft center of the workpiece W, and the clamper 5 is located on the work W side with respect to the shaft center of the round piece chip 3. Moreover, a chip pressing slope portion (chip pressing portion) 5a facing the direction of the chip receiving portion 2b is provided.

【００２２】また、この丸駒チップホルダ１は、クラン
パ５と丸駒チップ３との間に、丸駒チップ３と同軸に配
置されかつボルト６により丸駒チップ３に装着されたス
ペーサ７を設けている。このスペーサ７は丸駒チップ３
よりも小径のものとしてあり、この場合、図１（ｃ）に
示すように、スペーサ７の丸駒チップ３との接触面にお
ける外周縁と丸駒チップ３の切れ刃３ａとの間隔ｄ１を
２ｍｍとしている。また、このスペーサ７はその上部側
を半径ｒ１が５ｍｍの半球状分力発生部７Ａとしてお
り、この半球状分力発生部７Ａは、クランパ５により丸
駒チップ３を挾持した状態において、クランパ５のチッ
プ押圧斜面部５ａと当接してこのクランパ５から付与さ
れるチップ挾持力Ｆを、図１（ｄ）にも示すように、チ
ップ載置部方向押圧力Ｆａおよびチップ受部方向押圧力
Ｆｂに分けるようにしている。The round piece chip holder 1 is provided with a spacer 7 disposed between the clamper 5 and the round piece chip 3 coaxially with the round piece chip 3 and attached to the round piece chip 3 with bolts 6. ing. This spacer 7 is a round piece 3
In this case, the distance d1 between the outer peripheral edge of the spacer 7 at the contact surface with the round piece chip 3 and the cutting edge 3a of the round piece chip 3 is 2 mm, as shown in FIG. 1 (c). I am trying. Further, the upper side of the spacer 7 is a hemispherical component force generating portion 7A having a radius r1 of 5 mm, and the hemispherical component force generating portion 7A holds the round piece 3 by the clamper 5 while holding the clamper 5 in place. As shown in FIG. 1D, the chip holding force F applied to the chip pressing slope 5a by the clamper 5 is applied to the chip mounting portion direction pressing force Fa and the chip receiving portion direction pressing force Fb. I am trying to divide it into

【００２３】この丸駒チップホルダ１では、丸駒チップ
３を挾持するに際して、クランパ５のチップ押圧斜面部
５ａをスペーサ７における半球状分力発生部７Ａの軸心
よりもワークＷ側の部分に当接させ、クランプボルト４
を締め込み方向に回転操作してチップ挾持力Ｆを丸駒チ
ップ３側に付与すると、半球状分力発生部７Ａによりチ
ップ挾持力Ｆがチップ載置部方向押圧力Ｆａおよびチッ
プ受部方向押圧力Ｆｂに分けられ、この際、スペーサ７
と丸駒チップ３とは面接触しているため、チップ載置部
方向押圧力Ｆａは分散荷重として丸駒チップ３に伝えら
れ、丸駒チップ３はチップ載置部方向押圧力Ｆａにより
チップ載置部２ａに押し付けられて強固に保持されるこ
ととなる。In this round piece chip holder 1, when the round piece chip 3 is held, the chip pressing slope 5a of the clamper 5 is placed on the part closer to the work W than the shaft center of the hemispherical component force generating portion 7A of the spacer 7. Abut and clamp bolt 4
When the chip holding force F is applied to the round piece chip 3 side by rotating in the direction of tightening, the chip holding force F is pushed by the hemispherical component force generating unit 7A to the chip mounting unit direction pressing force Fa and the chip receiving unit direction pressing force. It is divided into pressure Fb, and at this time, the spacer 7
Since the round piece chip 3 and the round piece chip 3 are in surface contact with each other, the pressing force Fa in the chip mounting portion direction is transmitted to the round piece chip 3 as a distributed load, and the round piece chip 3 is mounted by the pressing force Fa in the chip mounting portion direction. It is pressed against the placing portion 2a and firmly held.

【００２４】このとき、クランパ５のチップ押圧斜面部
５ａと半球状分力発生部７Ａとの接触面積は僅かである
ことから、両者間に切り屑などの異物を挟み込む可能性
は極めて少なくなり、仮にクランパ５のチップ押圧斜面
部５ａとスペーサ７の半球状分力発生部７Ａとの間に切
り屑などの異物を挟み込んだとしても、上述したよう
に、チップ載置部方向押圧力Ｆａは分散荷重として丸駒
チップ３に伝えられるので、丸駒チップ３の割れや欠損
の発生は防がれることとなる。At this time, since the contact area between the chip pressing slope portion 5a of the clamper 5 and the hemispherical component force generating portion 7A is small, the possibility that foreign matter such as chips is caught between them is extremely small, Even if foreign matter such as chips is sandwiched between the chip pressing slope 5a of the clamper 5 and the hemispherical component force generating portion 7A of the spacer 7, the chip mounting portion direction pressing force Fa is dispersed as described above. Since the load is transmitted to the round piece chips 3, the round piece chips 3 are prevented from being cracked or chipped.

【００２５】また、丸駒チップ３はチップ受部方向押圧
力Ｆｂによりチップ受部２ｂにも押し付けらることか
ら、丸駒チップ３の回動前と回動後とにおける切れ刃３
ａの位置ずれ量は、丸駒チップ３の真円度だけに影響さ
れることとなり、すなわち、丸駒チップ３の回動前と回
動後とでは切れ刃３ａの位置にほとんどずれが生じない
こととなり、その結果、寸法精度が安定することとな
る。Further, since the round piece 3 is pressed against the tip receiving portion 2b by the pressing force Fb toward the tip receiving portion, the cutting edge 3 before and after the rotation of the round piece 3 is rotated.
The positional deviation amount of a is affected only by the roundness of the round piece chip 3, that is, the position of the cutting edge 3a before and after the rotation of the round piece chip 3 hardly shifts. As a result, the dimensional accuracy becomes stable.

【００２６】さらに、この丸駒チップホルダ１では、ス
ペーサ７の外周縁と丸駒チップ３の切れ刃３ａとの間隔
ｄ１を２ｍｍとしていると共に、半球状分力発生部７Ａ
の半径ｒ１を５ｍｍとしているので、ワークＷの加工時
における切り屑の流出は円滑なものとなり、クランパ５
による挾持も確実に行われることとなる。Further, in this round piece chip holder 1, the distance d1 between the outer peripheral edge of the spacer 7 and the cutting edge 3a of the round piece chip 3 is set to 2 mm, and the hemispherical component force generating portion 7A.
Since the radius r1 of the clamp is 5 mm, the chips flow out smoothly when the work W is processed, and the clamper 5
It will be surely held by.

【００２７】［第２実施例］図２は本発明に係わる丸駒
チップホルダの他の実施例を示している。[Second Embodiment] FIG. 2 shows another embodiment of the round piece chip holder according to the present invention.

【００２８】図２（ａ），（ｂ）に示すように、この丸
駒チップホルダ１１は、丸駒チップ３の軸心よりもワー
クＷ側に位置しかつチップ載置部２ａ方向を向く断面半
円形状をなすチップ押圧突部（チップ押圧部）１５ａを
有するクランパ１５を備え、このクランパ１５と丸駒チ
ップ３との間に、上部側を円錐台状分力発生部１７Ａと
したスペーサ１７を設けており、他の構成は第１実施例
と同じである。As shown in FIGS. 2 (a) and 2 (b), the round piece chip holder 11 has a cross section which is located closer to the work W than the axis of the round piece chip 3 and faces the chip mounting portion 2a. The spacer 17 is provided with a clamper 15 having a semi-circular chip pressing protrusion (chip pressing part) 15a, and between the clamper 15 and the round chip 3 the upper part is a truncated cone-shaped component force generating part 17A. Are provided, and the other structure is the same as that of the first embodiment.

【００２９】この実施例の丸駒チップホルダ１１におい
ても、クランパ１５のチップ押圧突部１５ａをスペーサ
１７における円錐台状分力発生部１７Ａの軸心よりもワ
ークＷ側の円錐面に当接させて、クランプボルト４を締
め込み方向へ回転操作すると、図２（ｃ）にも示すよう
に、円錐台状分力発生部１７Ａによりチップ挾持力Ｆが
チップ載置部方向押圧力Ｆａおよびチップ受部方向押圧
力Ｆｂに分けられ、この際、スペーサ１７と丸駒チップ
３とは面接触しているので、丸駒チップ３は分散荷重と
して伝えられるチップ載置部方向押圧力Ｆａによって、
チップ載置部２ａに押し付けられて強固に保持され、こ
のとき、クランパ１５のチップ押圧突部１５ａと円錐台
状分力発生部１７Ａの円錐面との接触面積は極めて微小
であるため、両者間に切り屑などの異物を挟み込む可能
性は極めて少なく、仮にクランパ１５のチップ押圧突部
１５ａとスペーサ１７の円錐台状分力発生部１７Ａとの
間に切り屑を挟み込んでも、チップ載置部方向押圧力Ｆ
ａが丸駒チップ３の一点に集中してかかることがないの
で、丸駒チップ３は割れや欠損が生じることなく保持さ
れることとなる。Also in the round piece tip holder 11 of this embodiment, the tip pressing protrusion 15a of the clamper 15 is brought into contact with the conical surface of the spacer 17 on the workpiece W side with respect to the shaft center of the truncated cone-shaped component force generating portion 17A. Then, when the clamp bolt 4 is rotated in the tightening direction, as shown in FIG. 2 (c), the tip holding force F is applied to the tip mounting portion direction pressing force Fa and the tip receiving force Fa by the truncated cone-shaped component force generating portion 17A. It is divided into the pressing force Fb in the part direction. At this time, since the spacer 17 and the round piece chip 3 are in surface contact with each other, the round piece chip 3 is pressed by the chip mounting part direction pushing force Fa transmitted as a distributed load.
It is pressed against the chip mounting part 2a and firmly held, and at this time, the contact area between the chip pressing protrusion 15a of the clamper 15 and the conical surface of the truncated cone-shaped component force generating part 17A is extremely small. It is extremely unlikely that foreign matter such as chips will be caught in the chip. Even if chips are sandwiched between the chip pressing projection 15a of the clamper 15 and the truncated cone-shaped component force generating section 17A of the spacer 17, even if chips are caught in the chip mounting direction. Pressing force F
Since a is not concentrated on one point of the round piece chip 3, the round piece chip 3 is held without being cracked or chipped.

【００３０】また、第１実施例と同じく、丸駒チップ３
はチップ受部方向押圧力Ｆｂによりチップ受部２ｂにも
押し付けらるため、丸駒チップ３の回動前と回動後とで
は切れ刃３ａの位置にほとんどずれが生じないこととな
り、したがって、寸法精度が安定することとなり、加え
て、この丸駒チップホルダ１１では、スペーサ１７の外
周縁と丸駒チップ３の切れ刃３ａとの間隔を２ｍｍとし
ているので、ワークＷの加工時における切り屑の流出が
滑めらかに行われると共に、クランパ１５による挾持が
確実に行われることとなる。Further, as in the first embodiment, the round piece 3
Is pressed against the chip receiving part 2b by the chip receiving part direction pressing force Fb, so that the position of the cutting edge 3a before and after the rotation of the round piece chip 3 hardly occurs. The dimensional accuracy becomes stable, and in addition, in this round piece chip holder 11, since the distance between the outer peripheral edge of the spacer 17 and the cutting edge 3a of the round piece chip 3 is 2 mm, the chips during processing of the work W are cut. The outflow of the water is smoothly performed, and the clamper 15 reliably holds the water.

【００３１】［第３実施例］図３は本発明に係わる丸駒
チップホルダのさらに他の実施例を示している。[Third Embodiment] FIG. 3 shows still another embodiment of the round piece chip holder according to the present invention.

【００３２】この実施例の丸駒チップホルダ（全体図は
図示せず）では、丸駒チップ２３に半球状分力発生部２
７Ａを一体で設けており、他の構成は第１実施例と同じ
である。In the round piece chip holder (not shown in the overall view) of this embodiment, the round piece 23 has a hemispherical component force generating portion 2.
7A is integrally provided, and other configurations are the same as those in the first embodiment.

【００３３】この場合、半球状分力発生部２７Ａの外周
縁と丸駒チップ２３の切れ刃２３ａとの間隔ｄ３を２ｍ
ｍとしていると共に、半球状分力発生部２７Ａの半径ｒ
３を５ｍｍとしている。In this case, the distance d3 between the outer peripheral edge of the hemispherical component force generating portion 27A and the cutting edge 23a of the round piece 23 is 2 m.
m and the radius r of the hemispherical component force generating unit 27A
3 is 5 mm.

【００３４】この実施例の丸駒チップホルダでは、スペ
ーサおよびスペーサを丸駒チップに装着するボルトを必
要としない分だけ部品点数の削減が図られ、丸駒チップ
にボルト挿通用孔を設ける必要もないことから、小径丸
駒チップの保持が可能となり、その結果、小径丸駒チッ
プの製作実現に寄与することとなる。In the round piece chip holder of this embodiment, the number of parts is reduced by the fact that a spacer and a bolt for mounting the spacer on the round piece chip are not required, and it is also necessary to provide a bolt insertion hole in the round piece chip. Since it does not exist, it is possible to hold the small-diameter round piece chip, and as a result, it contributes to the production and realization of the small-diameter round piece chip.

【００３５】また、第１実施例と同様に、クランパ５
（図１参照）のチップ押圧斜面部５ａと半球状分力発生
部２７Ａとの接触面積が僅かなものとなることから、丸
駒チップ２３を挾持する際には切り屑などの異物を挟み
込む可能性が極めて少なくなり、加えて、丸駒チップ２
３の回動前後における切れ刃２３ａの位置決め精度は、
丸駒チップ２３の真円度のみにより決定されるので、安
定した寸法精度が得られることとなり、さらに、半球状
分力発生部２７Ａの外周縁と丸駒チップ２３の切れ刃２
３ａとの間隔ｄ３を２ｍｍとしていると共に、半球状分
力発生部２７Ａの半径ｒ３を５ｍｍとしているため、加
工時における切り屑の流出に支障を来すことなくクラン
パ５による挾持が確実に行われることとなる。Further, similarly to the first embodiment, the clamper 5
Since the contact area between the tip pressing slope 5a (see FIG. 1) and the hemispherical component force generating portion 27A is small, foreign matter such as chips can be caught when the round piece 23 is held. In addition, the roundness chip 2
The positioning accuracy of the cutting edge 23a before and after the rotation of 3 is
Since it is determined only by the roundness of the round piece 23, stable dimensional accuracy can be obtained, and further, the outer peripheral edge of the hemispherical component force generating portion 27A and the cutting edge 2 of the round piece 23 can be obtained.
Since the distance d3 from 3a is set to 2 mm and the radius r3 of the hemispherical component force generating portion 27A is set to 5 mm, the clamping by the clamper 5 is reliably performed without disturbing the outflow of chips during machining. It will be.

【００３６】［第４実施例］図４は本発明に係わる丸駒
チップホルダのさらに他の実施例を示している。[Fourth Embodiment] FIG. 4 shows still another embodiment of the round-piece chip holder according to the present invention.

【００３７】この実施例の丸駒チップホルダ（全体図は
図示せず）では、丸駒チップ３３に円錐台状分力発生部
３７Ａを一体で設けており、他の構成は第２実施例と同
じである。In the round piece chip holder (not shown in the overall view) of this embodiment, the round piece tip 33 is integrally provided with a truncated cone-shaped component force generating portion 37A, and the other constructions are the same as those of the second embodiment. Is the same.

【００３８】この場合、円錐台状分力発生部３７Ａの丸
駒チップ本体部分側における外周縁と丸駒チップ３３の
切れ刃３３ａとの間隔ｄ４を２ｍｍとしている。In this case, the interval d4 between the outer peripheral edge of the truncated cone-shaped component force generating portion 37A on the side of the round piece chip body and the cutting edge 33a of the round piece chip 33 is 2 mm.

【００３９】この実施例における丸駒チップホルダで
は、第３実施例と同じく、部品点数の削減が図られ、小
径丸駒チップの保持も可能であることから、小径丸駒チ
ップの製作実現に寄与することとなる。In the round piece chip holder of this embodiment, the number of parts is reduced and the small diameter round piece chips can be held as in the third embodiment, which contributes to the realization of the small diameter round piece chips. Will be done.

【００４０】また、第２実施例と同様に、クランパ１５
（図２参照）のチップ押圧突部１５ａと円錐台状分力発
生部１７Ａとの接触面積が極めて少なくなるため、丸駒
チップ３３を挾持する際には切り屑などの異物を挟み込
む恐れがほとんど皆無となり、加えて、丸駒チップ３３
の回動前後における切れ刃３３ａの位置にはほとんどず
れが生じないので、寸法精度が安定し、さらに、円錐台
状分力発生部３７Ａの外周縁と丸駒チップ３３の切れ刃
３３ａとの間隔ｄ４を２ｍｍとしていることから、加工
時における切り屑の流出を滞らせることなく丸駒チップ
３３の挾持が確実になされることとなる。Further, similarly to the second embodiment, the clamper 15
Since the contact area between the tip pressing protrusion 15a (see FIG. 2) and the truncated cone-shaped component force generating portion 17A is extremely small, there is almost no possibility that foreign matter such as chips is caught when the round piece tip 33 is held. Nothing, in addition to the round piece chip 33
Since the position of the cutting edge 33a before and after the rotation of the cutting edge 33 is hardly displaced, the dimensional accuracy is stabilized, and the distance between the outer peripheral edge of the truncated cone-shaped component force generating portion 37A and the cutting edge 33a of the round piece 33 is further improved. Since d4 is set to 2 mm, the round piece chips 33 can be reliably held without delaying the outflow of chips during processing.

【００４１】そこで、第１〜４実施例の丸駒チップホル
ダ１，１１を旋盤にセットして、丸駒チップ３，２３，
３３の回動前と回動後とにおいてワークＷに対してそれ
ぞれ旋削加工を行い、丸駒チップ３，２３，３３の回動
前後におけるワークＷの寸法誤差および丸駒チップ３，
２３，３３の割れや欠損の有無を調べ、比較として従来
の丸駒チップホルダを用いて上記と同様の試験を行った
ところ表１の結果を得た。Therefore, the round piece chip holders 1 and 11 of the first to fourth embodiments are set on a lathe to insert the round piece chips 3, 23, and
The workpiece W is subjected to turning processing before and after the rotation of 33, respectively, and the dimensional error of the workpiece W before and after the rotation of the round piece chips 3, 23, 33 and the round piece chips 3, 3.
The presence or absence of cracks or defects in Nos. 23 and 33 was examined, and as a comparison, the same test as above was performed using a conventional round piece chip holder, and the results shown in Table 1 were obtained.

【００４２】[0042]

【表１】 [Table 1]

【００４３】表１の結果から、第１〜４実施例の丸駒チ
ップホルダ１，１１では、従来の丸駒チップホルダと比
較して、寸法精度が極めて安定したものとなることが実
証できた。From the results shown in Table 1, it has been proved that the round piece chip holders 1 and 11 of the first to fourth embodiments have extremely stable dimensional accuracy as compared with the conventional round piece chip holders. .

【００４４】また、表１の結果から、第１〜４実施例の
丸駒チップホルダ１，１１では、従来の丸駒チップホル
ダと比較して、丸駒チップ３，２３，３３に割れや欠損
を生じさせることなく保持できることが実証できた。Further, from the results of Table 1, in the round piece chip holders 1 and 11 of the first to fourth embodiments, the round piece chips 3, 23 and 33 are cracked or chipped as compared with the conventional round piece chip holders. It was proved that it can be retained without causing.

【００４５】本発明に係わる丸駒チップホルダの詳細な
構成は、上記した実施例に限定されるものではない。The detailed structure of the round piece chip holder according to the present invention is not limited to the above-mentioned embodiment.

【００４６】[0046]

【発明の効果】以上説明したように、本発明の請求項１
に係わる丸駒チップホルダでは、上記した構成としたか
ら、クランパのチップ押圧部を丸駒チップ側の分力発生
部に当接させてチップ挾持力を丸駒チップ側に付与する
と、分力発生部によりチップ挾持力をチップ載置部方向
押圧力およびチップ受部方向押圧力に分けることがで
き、丸駒チップをチップ載置部に押し付けて強固に保持
することができるだけでなく、チップ受部にも押し付け
ることが可能であるため、丸駒チップの回動前後におけ
る切れ刃の位置決め精度を向上させることができ、その
結果、従来よりも安定した寸法精度を得ることが可能で
あるという極めて優れた効果がもたらされる。As described above, according to the first aspect of the present invention.
Since the round piece chip holder relating to the above has the above-mentioned configuration, when the chip pressing portion of the clamper is brought into contact with the component force generating portion on the round piece chip side and the chip holding force is applied to the round piece chip side, the component force is generated. The chip holding force can be divided into the chip mounting part direction pressing force and the chip receiving part direction pressing force by the part, so that not only can the round piece chip be pressed against the chip mounting part and firmly held, but also the chip receiving part Since it can be pressed against, it is possible to improve the positioning accuracy of the cutting edge before and after the rotation of the round piece chip, and as a result, it is possible to obtain more stable dimensional accuracy than before. The effect is brought.

【００４７】また、本発明の請求項２に係わる丸駒チッ
プホルダでは、上記した構成としたから、分力発生部で
生じたチップ載置部方向押圧力を分散荷重として丸駒チ
ップに伝えることができ、したがって、丸駒チップを挾
持する際に、クランパとスペーサとの間に切り屑などの
異物を挟み込んだとしても、丸駒チップの割れや欠損の
発生を防ぐことが可能であり、本発明の請求項３に係わ
る丸駒チップホルダでは、加工時における切り屑の流出
を滞らせることなく、確実に丸駒チップを挾持すること
ができるという極めて優れた効果がもたらされる。Further, in the round piece chip holder according to claim 2 of the present invention, since it has the above-mentioned structure, the pressing force in the chip mounting portion direction generated in the component force generating portion is transmitted to the round piece chip as a distributed load. Therefore, even if foreign matter such as chips is sandwiched between the clamper and the spacer when holding the round piece chip, it is possible to prevent the round piece chip from cracking or chipping. In the round piece chip holder according to claim 3 of the invention, an extremely excellent effect that the round piece chips can be securely held without delaying the outflow of chips during processing is brought about.

【００４８】さらに、本発明の請求項４に係わる丸駒チ
ップホルダでは、上記した構成としているので、部品点
数の削減が実現できるのに加えて、小径丸駒チップの保
持も可能であることから、小径丸駒チップの製作実現に
寄与することができるうえ、請求項１に係わる丸駒チッ
プホルダと同様に、従来よりも安定した寸法精度を得る
ことが可能であり、本発明の請求項５に係わる丸駒チッ
プホルダでは、加工時における切り屑の流出に支障を来
すことなく、確実に丸駒チップを挾持することができる
という極めて優れた効果がもたらされる。Further, since the round piece chip holder according to claim 4 of the present invention has the above-mentioned structure, the number of parts can be reduced and the small-diameter round piece chip can be held. In addition to being able to contribute to the production and realization of a small-diameter round piece chip, it is possible to obtain more stable dimensional accuracy than the conventional one, as in the round piece chip holder according to claim 1. In the round piece insert holder according to (1), there is an extremely excellent effect that the round piece insert can be securely held without causing any trouble in the outflow of chips during processing.

【００４９】さらにまた、本発明の請求項６に係わる丸
駒チップホルダでは、上記した構成としたから、クラン
パと分力発生部との接触面積を僅かなものとすることが
でき、その結果、丸駒チップを挾持する際の切り屑など
の異物の挟み込みの発生率を著しく低減させることが可
能であり、本発明の請求項７に係わる丸駒チップホルダ
では、加工時における切り屑の流出に障害をもたらすこ
となく、丸駒チップを確実に挾持することが可能である
という極めて優れた効果がもたらされる。Furthermore, in the round piece tip holder according to claim 6 of the present invention, since the above-mentioned configuration is adopted, the contact area between the clamper and the component force generating portion can be made small, and as a result, It is possible to remarkably reduce the occurrence rate of entrapment of foreign matter such as chips when holding the round piece chip. With the round piece chip holder according to claim 7 of the present invention, it is possible to prevent chips from flowing out during processing. The extremely excellent effect that the round piece can be reliably held without any obstacle is brought about.

【００５０】さらにまた、本発明の請求項８に係わる丸
駒チップホルダでは、請求項６に係わる丸駒チップホル
ダと同じく、クランパと分力発生部との接触面積を極少
なくすることができ、丸駒チップを挾持する際に切り屑
などの異物を挟み込む可能性をほとんど皆無とすること
が可能であるという極めて優れた効果がもたらされる。Furthermore, in the round piece chip holder according to claim 8 of the present invention, the contact area between the clamper and the component force generating portion can be minimized, as in the round piece chip holder according to claim 6. An extremely excellent effect is brought about in that it is possible to almost completely eliminate the possibility that foreign matter such as chips is caught when holding the round piece chip.

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

【図１】本発明に係わる丸駒チップホルダの第１実施例
を示す平面説明図（ａ），断面説明図（ｂ），丸駒チッ
プ部分の拡大断面説明図（ｃ）および半球状分力発生部
の部分拡大断面図（ｄ）である。FIG. 1 is an explanatory plan view (a), a sectional explanatory view (b), an enlarged sectional explanatory view (c) of a circular piece tip portion and a hemispherical component force showing a first embodiment of a round piece tip holder according to the present invention. It is a partial expanded sectional view (d) of a generation part.

【図２】本発明に係わる丸駒チップホルダの第２実施例
を示す平面説明図（ａ）および断面説明図（ｂ）および
円錐台状分力発生部の部分拡大断面図（ｃ）である。FIG. 2 is a plan explanatory view (a) and a sectional explanatory view (b) showing a second embodiment of a round piece tip holder according to the present invention, and a partially enlarged sectional view (c) of a truncated cone-shaped component force generating portion. .

【図３】本発明に係わる丸駒チップホルダの第３実施例
を示す半球状をなす分力発生部を一体で有する丸駒チッ
プの全体斜視説明図（ａ）および断面説明図（ｂ）であ
る。FIG. 3 is an overall perspective explanatory view (a) and a sectional explanatory view (b) of a round piece chip integrally having a hemispherical component force generating portion showing a third embodiment of the round piece chip holder according to the present invention. is there.

【図４】本発明に係わる丸駒チップホルダの第４実施例
を示す円錐台状をなす分力発生部を一体で有する丸駒チ
ップの全体斜視説明図（ａ）および断面説明図（ｂ）で
ある。FIG. 4 is an overall perspective explanatory view (a) and a sectional explanatory view (b) of a round piece chip integrally showing a truncated cone-shaped component force generating portion showing a fourth embodiment of the round piece chip holder according to the present invention. Is.

【図５】従来の丸駒チップホルダを示す断面説明図
（ａ）および部分破砕平面説明図（ｂ）である。FIG. 5 is a cross-sectional explanatory view (a) and a partially crushed plane explanatory view (b) showing a conventional round piece chip holder.

【符号の説明】[Explanation of symbols]

１，１１ 丸駒チップホルダ ２ ホルダ本体 ２ａ チップ載置部 ２ｂ チップ受部 ３，２３，３３ 丸駒チップ ３ａ，２３ａ，３３ａ 切れ刃 ３ｂ チップ外周面 ５，１５ クランパ ５ａ チップ押圧斜面部（チップ押圧部） ７，１７ スペーサ ７Ａ，２７Ａ 半球状分力発生部 １５ａ チップ押圧突部（チップ押圧部） １７Ａ，３７Ａ 円錐台状分力発生部 Ｆ チップ挾持力 Ｆａ チップ載置部方向押圧力 Ｆｂ チップ受部方向押圧力 Ｗ ワーク ｄ１ スペーサの外周縁と丸駒チップの切れ刃との間隔 ｄ３、ｄ４ 分力発生部の外周縁と丸駒チップの切れ刃
との間隔 ｒ１，ｒ３ 半球状分力発生部の半径1,11 Round piece chip holder 2 Holder body 2a Chip mounting part 2b Chip receiving part 3,23,33 Round piece chips 3a, 23a, 33a Cutting edge 3b Chip outer peripheral surface 5,15 Clamper 5a Chip pressing slope (chip pressing) Part) 7,17 spacer 7A, 27A hemispherical component force generating part 15a chip pressing protrusion (chip pressing part) 17A, 37A frustoconical component force generating part F chip holding force Fa chip mounting part direction pressing force Fb chip receiving part Partial pressing force W Work d1 Distance between outer edge of spacer and cutting edge of round piece chip d3, d4 Distance between outer edge of component force generating section and cutting edge of round piece r1, r3 Hemispherical component force generating section Radius of

Claims (8)

【特許請求の範囲】[Claims] 【請求項１】 ホルダ本体の先端部分に設けられて丸駒
チップを回動可能に載置するチップ載置部と、前記チッ
プ載置部との間で丸駒チップを挾持・解放可能としたク
ランプを備えた丸駒チップホルダにおいて、前記ホルダ
本体の先端部分には、前記丸駒チップの軸心よりもワー
クと反対側に位置するチップ外周面と当接するチップ受
部を設けると共に、前記クランパには、前記丸駒チップ
の軸心よりもワーク側に位置するチップ押圧部を設け、
前記丸駒チップ側に、当該丸駒チップと同軸に配置され
かつ前記クランパのチップ押圧部と当接して当該クラン
パから丸駒チップに付与されるチップ挾持力をチップ載
置部方向押圧力およびチップ受部方向押圧力に分ける分
力発生部を設けたことを特徴とする丸駒チップホルダ。1. A round piece chip can be held and released between a chip placing portion provided on a tip portion of a holder main body for rotatably placing a round piece chip, and the tip placing portion. In a round piece chip holder provided with a clamp, a tip receiving portion that comes into contact with an outer peripheral surface of a tip of the holder body that is located on the side opposite to the workpiece with respect to the shaft center of the round piece chip is provided, and the clamper is provided. Is provided with a chip pressing portion located on the work side with respect to the axis of the round piece chip,
On the round piece chip side, the chip holding force applied to the round piece chip from the clamper by being arranged coaxially with the round piece chip and in contact with the chip pressing portion of the clamper is applied to the round piece chip and the chip mounting portion. A round piece chip holder characterized in that a component force generating portion for dividing into a pressing force in the receiving portion direction is provided. 【請求項２】 分力発生部はクランパと丸駒チップとの
間に位置して前記丸駒チップと面接触するスペーサに設
けてある請求項１に記載の丸駒チップホルダ。2. The round piece chip holder according to claim 1, wherein the component force generating portion is provided on a spacer which is located between the clamper and the round piece chip and is in surface contact with the round piece chip. 【請求項３】 スペーサの丸駒チップとの接触面におけ
る外周縁と丸駒チップの切れ刃との間隔を２ｍｍ以上と
した請求項２に記載の丸駒チップホルダ。3. The round piece chip holder according to claim 2, wherein the distance between the outer peripheral edge of the spacer on the contact surface with the round piece chip and the cutting edge of the round piece chip is 2 mm or more. 【請求項４】 分力発生部は丸駒チップに一体で設けて
ある請求項１に記載の丸駒チップホルダ。4. The round piece chip holder according to claim 1, wherein the component force generating portion is provided integrally with the round piece chip. 【請求項５】 分力発生部の丸駒チップ本体部分側にお
ける外周縁と丸駒チップ本体部分の切れ刃との間隔を２
ｍｍ以上とした請求項４に記載の丸駒チップホルダ。5. The distance between the outer peripheral edge of the component force generating portion on the round piece chip body portion side and the cutting edge of the round piece chip body portion is 2
The circular piece chip holder according to claim 4, which has a size of at least mm. 【請求項６】 クランパのチップ押圧部はチップ受部方
向を向くチップ押圧斜面部としてあると共に、分力発生
部は半球状としてある請求項１ないし５のいずれかに記
載の丸駒チップホルダ。6. The round piece chip holder according to claim 1, wherein the chip pressing portion of the clamper is a chip pressing inclined surface portion facing the chip receiving portion, and the component force generating portion is hemispherical. 【請求項７】 半球状をなす分力発生部の半径を３ｍｍ
以上とした請求項６に記載の丸駒チップホルダ。7. The radius of the hemispherical component force generating portion is 3 mm.
The round piece chip holder according to claim 6, which has been described above. 【請求項８】 クランパのチップ押圧部はチップ載置部
方向を向く断面半円形状をなすチップ押圧突部としてあ
ると共に、分力発生部は円錐台状としてある請求項１〜
５のいずれかに記載の丸駒チップホルダ。8. The chip pressing portion of the clamper is a chip pressing protrusion having a semicircular cross section facing the chip mounting portion, and the component force generating portion is frustoconical.
Round piece chip holder according to any one of 5.
JP7033198A 1995-02-22 1995-02-22 Round piece tip holder Pending JPH08229706A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7033198A JPH08229706A (en) 1995-02-22 1995-02-22 Round piece tip holder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7033198A JPH08229706A (en) 1995-02-22 1995-02-22 Round piece tip holder

Publications (1)

Publication Number Publication Date
JPH08229706A true JPH08229706A (en) 1996-09-10

Family

ID=12379792

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7033198A Pending JPH08229706A (en) 1995-02-22 1995-02-22 Round piece tip holder

Country Status (1)

Country Link
JP (1) JPH08229706A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110013997A1 (en) * 2008-03-18 2011-01-20 Franz Josef Pokolm Milling tool for machining work pieces

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20110013997A1 (en) * 2008-03-18 2011-01-20 Franz Josef Pokolm Milling tool for machining work pieces
US8690490B2 (en) * 2008-03-18 2014-04-08 Franz Josef Pokolm Milling tool for machining work pieces

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