JPH09108909A - Throw-away tip and its clamping mechanism - Google Patents
Throw-away tip and its clamping mechanismInfo
- Publication number
- JPH09108909A JPH09108909A JP27037895A JP27037895A JPH09108909A JP H09108909 A JPH09108909 A JP H09108909A JP 27037895 A JP27037895 A JP 27037895A JP 27037895 A JP27037895 A JP 27037895A JP H09108909 A JPH09108909 A JP H09108909A
- Authority
- JP
- Japan
- Prior art keywords
- throw
- away tip
- insertion hole
- tip
- bolt insertion
- 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- Withdrawn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
(57)【要約】
【課題】 スローアウェイチップおよびそのクランプ機
構において、チップの交換を容易に行うことを課題とす
る。
【解決手段】 上面から下面に貫通状態に形成されたボ
ルト挿通孔に挿通させた螺子部材でチップ座に螺子止め
されるとともに前記螺子部材の頭部で押圧されるスロー
アウェイチップにおいて、前記ボルト挿通孔は、前記螺
子部材の頭部が貫通可能な形状とされる技術が採用され
る。
(57) [Summary] [PROBLEMS] To easily replace a tip in a throw-away tip and a clamp mechanism thereof. SOLUTION: In the throw-away tip, which is screwed to a chip seat by a screw member inserted in a bolt insertion hole formed in a penetrating state from an upper surface to a lower surface and is pressed by a head of the screw member, the bolt insertion For the hole, a technique is adopted in which the head portion of the screw member can be penetrated.
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
切削工具におけるスローアウェイチップおよびそのクラ
ンプ機構に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a throw-away tip for a throw-away type cutting tool and a clamp mechanism therefor.
【０００２】[0002]
【従来の技術】従来より、スローアウェイ式切削工具に
おけるスローアウェイチップのクランプ機構として、図
８に示すように、工具本体１のチップ座２上に載せたス
ローアウェイチップ３にボルト挿通孔４を形成しておく
とともに、チップ座２の底面２ａに螺子孔５を形成して
おき、チップ３を直接チップ座２に螺子止めするスクリ
ューオンタイプのものが知られている。2. Description of the Related Art Conventionally, as a clamping mechanism for a throw-away tip in a throw-away type cutting tool, as shown in FIG. 8, a bolt insertion hole 4 is provided in a throw-away tip 3 placed on a tip seat 2 of a tool body 1. A screw-on type in which a screw hole 5 is formed in the bottom surface 2a of the chip seat 2 and the chip 3 is directly screwed to the chip seat 2 is known.
【０００３】このクランプ機構は全体としてコンパクト
になるという長所を有し、また、ボルト挿通孔４にテー
パ部４ａを設け、かつ螺子孔５はボルト挿通孔４に対し
て壁面２ｂ側に中心位置をずらし、さらにチップ固定用
の螺子部材６はその頭部の下部に前記テーパ部４ａに当
接するテーパ面６ａを設けた構成とすれば、螺子部材６
をねじ込んでテーパ面６ａとテーパ部４ａとが接触し始
めるとチップ３にはチップ座２の底面２ａおよび壁面２
ｂのそれぞれの方向に押さえ力が生じることとなり、単
に螺子部材６をねじ込むという作業だけでチップ３の固
定と高精度な位置決めとが同時になされることとなり、
取り付け作業が容易になるという長所も得られる。This clamp mechanism has the advantage that it is compact as a whole, the bolt insertion hole 4 is provided with a taper portion 4a, and the screw hole 5 is centered on the wall surface 2b side with respect to the bolt insertion hole 4. If the screw member 6 for shifting the chip is further provided with a taper surface 6a that abuts the taper portion 4a at the lower part of its head, the screw member 6
When the taper surface 6a and the taper portion 4a start to come into contact with each other by screwing in, the bottom surface 2a and the wall surface 2 of the chip seat 2 are attached to the chip 3.
Since a pressing force is generated in each direction of b, the fixing of the chip 3 and the highly accurate positioning can be performed at the same time only by the operation of screwing the screw member 6.
There is also an advantage that the installation work becomes easy.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、上記の
スローアウェイチップのクランプ機構には、以下のよう
な課題が残されている。すなわち、従来は、チップ３を
位置決め・固定する螺子部材６の頭部６ｂが、ボルト挿
通孔４の最小径より大径であるため、その頭部６ｂに対
してボルト挿通孔４に前記頭部６ａを通過させることが
できなかった。したがって、チップ３を交換する場合に
は、チップ３を固定している螺子部材６を完全に取り外
してチップ３の脱着を行う必要があり、交換作業に時間
がかかるとともに、面倒であった。However, the above-described clamp mechanism for the throw-away tip has the following problems. That is, since the head portion 6b of the screw member 6 for positioning and fixing the chip 3 has a diameter larger than the minimum diameter of the bolt insertion hole 4 in the related art, the head portion 6b is inserted into the bolt insertion hole 4 with respect to the head portion 6b. 6a could not be passed. Therefore, when the chip 3 is replaced, it is necessary to completely remove the screw member 6 fixing the chip 3 to attach and detach the chip 3, which requires time and labor for the replacement work.
【０００５】本発明は、前述の課題に鑑みてなされたも
ので、チップの交換を容易に行うことができるスローア
ウェイチップおよびそのクランプ機構を提供することを
目的とする。The present invention has been made in view of the above-mentioned problems, and an object of the present invention is to provide a throw-away tip and a clamp mechanism for the same, in which the tip can be easily replaced.
【０００６】[0006]
【課題を解決するための手段】本発明は、前記課題を解
決するために以下の構成を採用した。すなわち、請求項
１記載のスローアウェイチップでは、上面から下面に貫
通状態に形成されたボルト挿通孔に挿通させた螺子部材
でチップ座に螺子止めされるとともに前記螺子部材の頭
部で押圧されるスローアウェイチップにおいて、前記ボ
ルト挿通孔は、前記螺子部材の頭部が貫通可能な形状と
される技術が採用される。The present invention has the following features to attain the object mentioned above. That is, in the throw-away tip according to claim 1, a screw member inserted through a bolt insertion hole formed in a penetrating state from the upper surface to the lower surface is screwed to the chip seat and pressed by the head of the screw member. In the throw-away tip, a technique is adopted in which the bolt insertion hole has a shape through which the head of the screw member can penetrate.
【０００７】このスローアウェイチップでは、ボルト挿
通孔を螺子部材の頭部が貫通可能な形状としているの
で、螺子部材を完全に取り外さなくても、螺子部材を緩
めた状態でその頭部に対してボルト挿通孔を通過させる
ことにより、チップが着脱される。In this throw-away tip, since the head portion of the screw member can penetrate through the bolt insertion hole, even if the screw member is not completely removed, the screw member can be loosened with respect to the head. The chip is attached and detached by passing through the bolt insertion hole.
【０００８】請求項２記載のスローアウェイチップで
は、請求項１記載のスローアウェイチップにおいて、前
記ボルト挿通孔は、上面側に形成された大径部と、該大
径部に連通するとともに大径部より径の小さな小径部か
ら構成され、該小径部は、断面形状が非円形とされてい
る技術が採用される。In the throw-away tip according to claim 2, in the throw-away tip according to claim 1, the bolt insertion hole communicates with the large diameter portion formed on the upper surface side and has a large diameter. The small diameter portion has a smaller diameter than that of the portion, and the small diameter portion has a non-circular cross-section.
【０００９】このスローアウェイチップでは、小径部の
断面形状を非円形としているので、円形状とした場合に
比べて螺子部材の頭部とボルト挿通孔内周面との接触部
が増すため、より固定強度が高まる。In this throw-away tip, since the cross-sectional shape of the small diameter portion is non-circular, the contact portion between the head of the screw member and the inner peripheral surface of the bolt insertion hole is increased compared to the case of a circular shape. Fixed strength is increased.
【００１０】請求項３記載のスローアウェイチップで
は、請求項２記載のスローアウェイチップにおいて、前
記小径部は、断面形状が大径部に内接する多角形とさ
れ、前記大径部は、上面から下面に向けて徐々に径が小
さくなるテーパ形状とされ、前記小径部の隣接する角部
間に位置する前記大径部の壁面が、前記螺子部材の頭部
による被押圧面とされる技術が採用される。In the throw-away tip according to claim 3, in the throw-away tip according to claim 2, the small-diameter portion is a polygon whose cross-sectional shape is inscribed in the large-diameter portion, and the large-diameter portion is from the upper surface. There is a technique in which the wall surface of the large-diameter portion, which has a taper shape whose diameter gradually decreases toward the lower surface and is located between adjacent corners of the small-diameter portion, is a pressed surface by the head of the screw member. Adopted.
【００１１】このスローアウェイチップでは、大径部を
テーパ形状とし、小径部の隣接する角部間に位置する大
径部の壁面を、前記螺子部材の頭部による被押圧面とし
ているので、螺子部材で螺子止めすることにより、その
頭部が大径部の壁面を押し付けることによりチップをチ
ップ座の底面および壁面に押し付けてチップの位置決め
および固定が行われる。In this throw-away tip, the large diameter portion is tapered, and the wall surface of the large diameter portion located between the adjacent corners of the small diameter portion is the surface to be pressed by the head of the screw member. By screwing with a member, the head presses the wall surface of the large-diameter portion to press the chip against the bottom surface and wall surface of the chip seat, thereby positioning and fixing the chip.
【００１２】請求項４記載のスローアウェイチップのク
ランプ機構では、スローアウェイチップには、上面から
下面に向けて徐々に径が小さくなるテーパ部を有するボ
ルト挿通孔が設けられ、一方、スローアウェイチップが
装着される工具本体のチップ座は、前記スローアウェイ
チップの下面が着座する平坦な底面とスローアウェイチ
ップの側面が当接する壁面とを備えるとともに、前記ボ
ルト挿通孔に対応する螺子孔が底面に形成され、前記ボ
ルト挿通孔に通じた螺子部材によってスローアウェイチ
ップをチップ座に螺子止めするスローアウェイチップの
クランプ機構であって、前記螺子孔は、その中心軸線が
チップ座に位置決めされるスローアウェイチップのボル
ト挿入孔の中心軸線に対して前記壁面寄りに偏心して設
けられ、前記螺子部材は、その頭部にボルト挿通孔の前
記壁面側の内周を押さえて前記スローアウェイチップを
チップ座の底面および壁面に押し付ける突出部を備え、
かつ前記頭部が、前記ボルト挿通孔に貫通可能な形状と
されている技術が採用される。In the throw-away tip clamping mechanism according to the present invention, the throw-away tip is provided with a bolt insertion hole having a tapered portion whose diameter gradually decreases from the upper surface to the lower surface, while the throw-away tip is provided. The tip seat of the tool body to which is mounted has a flat bottom surface on which the lower surface of the throw-away tip is seated and a wall surface on which the side surface of the throw-away tip abuts, and a screw hole corresponding to the bolt insertion hole on the bottom surface. A throwaway tip clamping mechanism for screwing a throw-away tip to a tip seat by means of a screw member that is formed and communicates with the bolt insertion hole, wherein the screw hole has a center axis of the throw-away tip positioned at the tip seat. The screw is provided eccentrically toward the wall surface with respect to the central axis of the bolt insertion hole of the chip. Wood is provided with a protrusion for pressing the cutting insert pressing the inner periphery of the wall surface of the bolt insertion hole in its head on the bottom and walls of the insert pocket,
In addition, a technique is adopted in which the head has a shape capable of penetrating the bolt insertion hole.
【００１３】このスローアウェイチップのクランプ機構
では、チップを螺子部材により螺子止めする際に、螺子
孔をその中心軸線がチップ座に位置決めされるスローア
ウェイチップのボルト挿入孔の中心軸線に対して壁面寄
りに偏心して設けており、かつ、螺子部材の頭部に突出
部を形成しているので、螺子部材をねじ込むことによ
り、突出部がボルト挿通孔の前記壁面側の内周を押さえ
て前記スローアウェイチップをチップ座の底面および壁
面に押し付けてチップの位置決めおよび固定が行われ
る。さらに、螺子部材の頭部がボルト挿通孔に貫通可能
な形状とされているので、チップの交換時には、螺子部
材を完全に取り外さなくても、螺子部材を緩めた状態で
その頭部に対してボルト挿通孔を通過させて、スローア
ウェイチップを着脱する。In this throw-away tip clamping mechanism, when the tip is screwed by the screw member, the screw hole has a wall surface with respect to the center axis of the bolt insertion hole of the throw-away tip whose central axis is positioned at the tip seat. Since it is provided eccentrically toward the side and the protrusion is formed on the head of the screw member, the protrusion suppresses the inner circumference of the bolt insertion hole on the wall surface side by screwing the screw member, and The away tip is pressed against the bottom surface and the wall surface of the tip seat to position and fix the tip. Further, since the head of the screw member has a shape capable of penetrating the bolt insertion hole, when replacing the tip, even if the screw member is not completely removed, the screw member can be loosened with respect to the head. Insert the throw-away tip through the bolt insertion hole.
【００１４】請求項５記載のスローアウェイチップのク
ランプ機構では、スローアウェイチップには、上面から
下面に向けて徐々に径が小さくなるテーパ部を有するボ
ルト挿通孔が設けられ、一方、スローアウェイチップが
装着される工具本体のチップ座は、前記スローアウェイ
チップの下面が着座する平坦な底面とスローアウェイチ
ップの側面が当接する壁面とを備えるとともに、前記ボ
ルト挿通孔に対応する螺子孔が底面に形成され、前記ボ
ルト挿通孔に通じた螺子部材によってスローアウェイチ
ップをチップ座に螺子止めするスローアウェイチップの
クランプ機構であって、前記螺子孔は、その中心軸線が
チップ座に位置決めされるスローアウェイチップのボル
ト挿入孔の中心軸線に対して前記壁面側に傾斜して設け
られ、前記螺子部材は、その頭部にボルト挿通孔の前記
壁面側の内周を押さえて前記スローアウェイチップをチ
ップ座の底面および壁面に押し付ける突出部を備え、か
つ前記頭部が、前記ボルト挿通孔に貫通可能な形状とさ
れている技術が採用される。In the throw-away tip clamping mechanism according to the present invention, the throw-away tip is provided with a bolt insertion hole having a tapered portion whose diameter gradually decreases from the upper surface to the lower surface, while the throw-away tip is provided. The tip seat of the tool body to which is mounted has a flat bottom surface on which the lower surface of the throw-away tip is seated and a wall surface on which the side surface of the throw-away tip abuts, and a screw hole corresponding to the bolt insertion hole on the bottom surface. A throwaway tip clamping mechanism for screwing a throw-away tip to a tip seat by a screw member that is formed and communicates with the bolt insertion hole, wherein the screw hole has a center axis thereof positioned at the tip seat. The screw portion is provided so as to be inclined toward the wall surface side with respect to the central axis of the bolt insertion hole of the chip. Has a protrusion on its head that presses the inner circumference of the bolt insertion hole on the wall surface side and presses the throw-away tip against the bottom surface and wall surface of the chip seat, and the head can penetrate the bolt insertion hole. The technology which is made into a different shape is adopted.
【００１５】このスローアウェイチップのクランプ機構
では、チップを螺子部材により螺子止めする際に、螺子
孔を、その中心軸線をチップ座に位置決めされるスロー
アウェイチップのボルト挿入孔の中心軸線に対して前記
壁面側に傾斜して設けており、かつ、螺子部材の頭部に
突出部を形成しているので、螺子部材をねじ込むことに
より、突出部がボルト挿通孔の前記壁面側の内周を押さ
えて前記スローアウェイチップをチップ座の底面および
壁面に押し付けてチップの位置決めおよび固定が行われ
る。さらに、螺子部材の頭部がボルト挿通孔に貫通可能
な形状とされているので、チップの交換時には、螺子部
材を完全に取り外さなくても、螺子部材を緩めた状態で
その頭部に対してボルト挿通孔を通過させて、スローア
ウェイチップを着脱する。In the throw-away tip clamping mechanism, when the tip is screwed by the screw member, the screw hole is formed with respect to the central axis of the bolt insertion hole of the throw-away tip whose center axis is positioned at the tip seat. Since the projection is formed on the head of the screw member, the projection is pressed against the inner circumference of the bolt insertion hole on the wall surface side because the projection is formed on the head of the screw member. The throw-away tip is pressed against the bottom surface and the wall surface of the tip seat to position and fix the tip. Further, since the head of the screw member has a shape capable of penetrating the bolt insertion hole, when replacing the tip, even if the screw member is not completely removed, the screw member can be loosened with respect to the head. Insert the throw-away tip through the bolt insertion hole.
【００１６】請求項６記載のスローアウェイチップのク
ランプ機構では、請求項４または５記載のスローアウェ
イチップのクランプ機構において、前記ボルト挿通孔
は、その内径が最小となる小径部の断面形状が正多角形
とされ、前記螺子部材の頭部は、その外周形状が前記小
径部の形状と同じ正多角形とされてなり、該小径部の一
つの角部は、前記スローアウェイチップが位置決めされ
た状態で、前記螺子孔の中心軸線がボルト挿通孔の中心
軸線に対して偏心または傾斜された方向に向けて形成さ
れているAccording to a sixth aspect of the present invention, there is provided a throwaway tip clamping mechanism according to the fourth or fifth aspect of the present invention, wherein the bolt insertion hole has a small cross-sectional shape of a small diameter portion having a minimum inner diameter. The head portion of the screw member has a polygonal shape whose outer peripheral shape is the same as the shape of the small-diameter portion, and the throw-away tip is positioned at one corner of the small-diameter portion. In this state, the central axis of the screw hole is formed in a direction eccentric or inclined with respect to the central axis of the bolt insertion hole.
【００１７】このスローアウェイチップのクランプ機構
では、正多角形状の小径部において、その一つの角部
を、チップが位置決めされた状態で、前記螺子孔の中心
軸線の偏心または傾斜方向に向けて形成しているので、
螺子部材によるチップ固定時において、前記一つの角部
の両側に位置するボルト挿通孔の内周に、螺子部材の頭
部の突出部のうち２つがそれぞれ当接してチップを押さ
え付けることにより接触部が２つとなり、高い固定強度
が得られる。In the throw-away tip clamping mechanism, one corner of the regular polygonal small-diameter portion is formed in the eccentric or inclined direction of the central axis of the screw hole while the tip is positioned. Because
When the chip is fixed by the screw member, two of the protrusions of the head of the screw member come into contact with the inner circumferences of the bolt insertion holes located on both sides of the one corner, and press the chip to contact the contact portion. 2 is obtained, and high fixing strength can be obtained.
【００１８】[0018]
【発明の実施の形態】以下、本発明の実施の第１形態を
図１から図３を参照しながら説明する。これらの図にあ
って、符号１１は工具本体、１２はチップ座、１３はス
ローアウェイチップ、１４は螺子部材を示している。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be described with reference to FIGS. In these drawings, reference numeral 11 is a tool body, 12 is a tip seat, 13 is a throw-away tip, and 14 is a screw member.
【００１９】第１形態のスローアウェイチップのクラン
プ機構は、図１に示すように、工具本体１１の先端に形
成されるチップ座１２上に載せたスローアウェイチップ
（以下、チップと略す。）１３を螺子部材１４によって
直接チップ座１２に螺子止めするスクリューオンタイプ
のものである。The throwaway tip clamping mechanism of the first embodiment, as shown in FIG. 1, is a throwaway tip (hereinafter abbreviated as a tip) 13 placed on a tip seat 12 formed at the tip of a tool body 11. Is a screw-on type in which a screw member 14 is directly screwed to the chip seat 12.
【００２０】前記チップ１３は、図１および図２に示す
ように、正方形板状のポジティブタイプで上面１３ａの
各辺に切刃が形成されたものであり、その中央部にボル
ト挿通孔１５が設けられている。該ボルト挿通孔１５
は、その断面形状が円形であり上面１３ａ側に形成され
た大径部１５ａと、該大径部１５ａに続いて形成されか
つその断面形状が正方形とされ内径が最小となる小径部
１５ｂとから構成されている。前記大径部１５ａは、上
面１３ａから下面１３ｂに向けて徐々に径が小さくなる
テーパ形状とされている。チップ１３が装着されるチッ
プ座１２は、前記チップ１３の下面１３ｂが着座する平
坦な底面１２ａとチップ１３の側面１３ｃが当接し底面
１２ａの後端および内周に起立する２つの壁面１２ｂと
を備えるとともに、前記ボルト挿通孔１５に対応し該ボ
ルト挿通孔１５に通じた螺子部材１４を螺着させる螺子
孔１６が底面１２ａに形成されている。As shown in FIGS. 1 and 2, the tip 13 is a square plate-type positive type having a cutting edge formed on each side of the upper surface 13a, and a bolt insertion hole 15 is formed in the center thereof. It is provided. The bolt insertion hole 15
Includes a large-diameter portion 15a having a circular cross-sectional shape and formed on the upper surface 13a side, and a small-diameter portion 15b formed following the large-diameter portion 15a and having a square cross-sectional shape and a minimum inner diameter. It is configured. The large diameter portion 15a has a tapered shape in which the diameter gradually decreases from the upper surface 13a to the lower surface 13b. The chip seat 12 on which the chip 13 is mounted has a flat bottom surface 12a on which the lower surface 13b of the chip 13 is seated, and two wall surfaces 12b standing on the rear end and the inner circumference of the bottom surface 12a with which the side surface 13c of the chip 13 abuts. A screw hole 16 corresponding to the bolt insertion hole 15 and into which the screw member 14 communicated with the bolt insertion hole 15 is screwed is formed on the bottom surface 12a.
【００２１】前記螺子孔１６は、その中心軸線Ｏがチッ
プ座１２に位置決めされるチップ１３のボルト挿入孔１
５の中心軸線Ｏ’に対して隣接した２つの壁面１２ｂの
交差方向に偏心して設けられ、また、前記ボルト挿通孔
１５の小径部１５ｂは、チップ１３の装着状態で、その
一つの角部１５ｃを、前記螺子孔１６の中心軸線Ｏをボ
ルト挿通孔１５の中心軸線Ｏ’に対して偏心させた方向
（図１の（ａ）における矢印方向）に向けて形成されて
いる。The screw hole 16 has a central axis O which is positioned in the chip seat 12, and is a bolt insertion hole 1 for the chip 13.
5 is provided eccentrically in the intersecting direction of the two wall surfaces 12b adjacent to the central axis O'of 5, and the small diameter portion 15b of the bolt insertion hole 15 has one corner portion 15c when the tip 13 is mounted. Is formed in a direction (an arrow direction in FIG. 1A) in which the central axis O of the screw hole 16 is eccentric with respect to the central axis O ′ of the bolt insertion hole 15.
【００２２】前記螺子部材１４は、図３に示すように、
その頭部１４ａの外周形状が前記小径部１５ｂの形状と
同じ正方形にかつ小径部１５ｂより若干小さく形成さ
れ、前記ボルト挿通孔１５に貫通可能な形状とされてい
る。また、前記頭部１４ａの各角部は、図１に示すよう
に、螺子孔１６にねじ込んだときにボルト挿通孔１５の
壁面１２ｂ側の内周を押さえてチップ１３をチップ座１
２の底面１２ａおよび壁面１２ｂに押し付ける突出部１
４ｂとされる。これらの突出部１４ｂの下面は、テーパ
形状とされた前記大径部１５ａの壁面に沿って当接する
ようにテーパ状に形成されている。The screw member 14 is, as shown in FIG.
The outer peripheral shape of the head portion 14a is formed in the same square shape as the shape of the small diameter portion 15b and slightly smaller than the small diameter portion 15b so that the bolt insertion hole 15 can be penetrated. Further, as shown in FIG. 1, each of the corners of the head portion 14a presses the inner periphery of the bolt insertion hole 15 on the wall surface 12b side when screwed into the screw hole 16, so that the chip 13 is seated.
Projection part 1 to be pressed against bottom surface 12a and wall surface 12b of 2
4b. The lower surfaces of the protruding portions 14b are formed in a tapered shape so as to come into contact with the wall surface of the large diameter portion 15a having a tapered shape.
【００２３】また、頭部１４ａは、その周縁上部がテー
パ状に形成された面取り部１４ｃとされ、さらに、ボル
ト挿通孔１５の中心軸線Ｏ’に対する螺着された螺子部
材１４の面取り部１４ｃの角度θは、ボルト挿通孔１５
の中心軸線Ｏ’に対する壁面１２ｂに当接するチップ１
３の側面１３ｃの角度θ’以上に設定されている。Further, the head portion 14a has a chamfered portion 14c whose upper peripheral portion is formed in a tapered shape, and further, of the chamfered portion 14c of the screw member 14 screwed to the central axis O'of the bolt insertion hole 15. The angle θ is the bolt insertion hole 15
1 abutting on the wall surface 12b with respect to the central axis O'of
The angle is set to be equal to or greater than the angle θ ′ of the side surface 13c of No. 3.
【００２４】次に、本発明に係るスローアウェイチップ
のクランプ機構の第１形態におけるチップの交換時にお
ける脱着方法について説明する。Next, a description will be given of a method of attaching / detaching a tip in the first embodiment of the clamp mechanism for a throw-away tip according to the present invention when the tip is replaced.
【００２５】〔チップの取り外し〕ねじ込まれている螺
子部材１４を、図３の（ｂ）に示すように、緩めてその
頭部１４ａを上方に移動させるとともに、図３の（ａ）
に示すように、一つの突出部１４ｂの位置をボルト挿通
孔１５の角部１５ｃの方向に合わせる。このとき、螺子
部材１４の頭部１４ａがボルト挿通孔１５の小径部１５
ｂより若干小さい正方形状とされ、ボルト挿通孔１５に
貫通可能な形状とされているので、チップ１３を上方に
引き上げることにより螺子部材１４から容易に取り外す
ことができる。[Removal of Tip] As shown in FIG. 3B, the screwed screw member 14 is loosened to move its head 14a upward, and at the same time, as shown in FIG.
As shown in, the position of one protruding portion 14b is aligned with the direction of the corner portion 15c of the bolt insertion hole 15. At this time, the head portion 14 a of the screw member 14 has the small diameter portion 15 of the bolt insertion hole 15.
Since it has a square shape slightly smaller than b and can penetrate the bolt insertion hole 15, it can be easily removed from the screw member 14 by pulling the tip 13 upward.
【００２６】〔チップの取り付け〕チップ座１２の螺子
孔１６に緩めた状態で螺着されている螺子部材１４の上
方から、新しいチップ１３をボルト挿通孔１５に螺子部
材１４を貫通させてチップ座１２の底面１２ａ上に載置
する。そして、螺子部材１４を螺子孔１６に再びねじ込
んでチップ１３を工具本体１１に締結させる。このと
き、螺子孔１６を、その中心軸線Ｏがチップ座１２に位
置決めされるチップ１３のボルト挿通孔１５の中心軸線
Ｏ’に対して２つの壁面１２ｂの交差方向に偏心して設
けており、かつ、螺子部材１４の頭部１４ａに突出部１
４ｂを形成しているので、螺子部材１４をねじ込むこと
により、突出部１４ｂがボルト挿通孔１５の壁面１２ｂ
側の内周（テーパ形状とされた大径部１５ａの壁面）を
被押圧面として押さえてチップ１３をチップ座１２の底
面１２ａおよび壁面１２ｂに押し付けてチップ１３の位
置決めおよび固定が行われる。[Installation of Chip] A new chip 13 is inserted into the bolt insertion hole 15 through the screw member 14 from above the screw member 14 which is screwed in the screw hole 16 of the chip seat 12 in a loosened state. It is placed on the bottom surface 12a of the plate 12. Then, the screw member 14 is screwed into the screw hole 16 again to fasten the tip 13 to the tool body 11. At this time, the screw hole 16 is provided so as to be eccentric in the intersecting direction of the two wall surfaces 12b with respect to the central axis O ′ of the bolt insertion hole 15 of the chip 13 whose central axis O is positioned in the chip seat 12. , The protrusion 1 on the head 14a of the screw member 14.
4b is formed, the screw member 14 is screwed into the protrusion 14b so that the protrusion 14b is formed on the wall surface 12b of the bolt insertion hole 15.
The inner periphery of the side (the wall surface of the taper-shaped large-diameter portion 15a) is pressed as a pressed surface to press the chip 13 against the bottom surface 12a and the wall surface 12b of the chip seat 12 to position and fix the chip 13.
【００２７】また、小径部１５ｂの一つの角部１５ｃ
を、前記螺子孔１６の中心軸線Ｏの偏心方向に向けて形
成しているので、前記一つの角部１５ｃの両側に位置す
るボルト挿通孔１５の内周（テーパ形状とされた大径部
１５ａの壁面）に、螺子部材１４の頭部１４ａの突出部
１４ｂのうち２つがそれぞれ当接してチップ１３を押さ
え付けることにより接触部が２つとなり、高い固定強度
を得ることができる。Also, one corner portion 15c of the small diameter portion 15b.
Are formed toward the eccentric direction of the central axis O of the screw hole 16, the inner circumference of the bolt insertion hole 15 located on both sides of the one corner portion 15c (the taper-shaped large diameter portion 15a). Two of the protruding portions 14b of the head portion 14a of the screw member 14 contact each other to press the chip 13 into two contact portions, and high fixing strength can be obtained.
【００２８】さらに、チップ１３の外形とボルト挿通孔
１５の小径部１５ｂとは互いにその断面形状が中心軸線
Ｏ’を中心とした相似形状の正方形であるため、チップ
１３の側面１３ｃと小径部１５ｂとの距離が全周にわた
って同じとなり、周方向に一様な 強度を備えることが
でき、切削時の応力集中を抑制することができる。Furthermore, since the outer shape of the tip 13 and the small diameter portion 15b of the bolt insertion hole 15 are squares having similar cross-sections with respect to the central axis O ', the side surface 13c of the tip 13 and the small diameter portion 15b. Since the distance between and is the same over the entire circumference, uniform strength can be provided in the circumferential direction, and stress concentration during cutting can be suppressed.
【００２９】なお、螺子部材１４の頭部１４ａにおける
面取り部１４ｃの角度θを、チップ１３の側面１３ｃの
角度θ’以上に設定しているので、螺子部材１４からチ
ップ１３を抜き取り易くなるとともに、螺子部材１４へ
のチップ１３の取り付け時には、ボルト挿通孔１５に頭
部１４ａを挿通し易くなる。Since the angle θ of the chamfered portion 14c of the head 14a of the screw member 14 is set to be equal to or greater than the angle θ'of the side surface 13c of the chip 13, the chip 13 can be easily removed from the screw member 14, and When the chip 13 is attached to the screw member 14, the head 14a can be easily inserted into the bolt insertion hole 15.
【００３０】上記のように、チップ１３の交換時には、
螺子部材１４を完全に取り外さなくても、螺子部材１４
を緩めた状態で容易にチップ１３の取り外しおよび取り
付けを行うことができる。As described above, when the chip 13 is replaced,
Even if the screw member 14 is not completely removed, the screw member 14
It is possible to easily remove and attach the chip 13 in a state where the is loosened.
【００３１】次に、本発明の実施の第２形態を図４およ
び図５を参照しながら説明する。これらの図にあって、
符号２１はスローアウェイチップ、２２はボルト挿通孔
を示している。Next, a second embodiment of the present invention will be described with reference to FIGS. 4 and 5. In these figures,
Reference numeral 21 is a throw-away tip, and 22 is a bolt insertion hole.
【００３２】第２形態と第１形態との異なる点は、図４
および図５に示すように、第１形態のチップ１３におけ
るボルト挿通孔１５に対して、第２形態のチップ２１の
ボルト挿通孔２２が中心軸線Ｏ’に対して９０度回転し
た位置に形成されている点である。すなわち、ボルト挿
通孔２２は、図４に示すように、前記螺子孔１６の中心
軸線Ｏの偏心方向に大径部２２ａを向けて形成している
ので、螺子部材１４を螺子孔１６にねじ込んでチップ３
を固定するときには、大径部２２ａに螺子部材１４の頭
部１４ａの突出部１４ｂのうち１つが当接してチップ２
１を押さえ付けることとなる。The difference between the second mode and the first mode is that FIG.
Further, as shown in FIG. 5, the bolt insertion hole 22 of the tip 21 of the second embodiment is formed at a position rotated by 90 degrees with respect to the central axis O ′ with respect to the bolt insertion hole 15 of the tip 13 of the first embodiment. That is the point. That is, as shown in FIG. 4, the bolt insertion hole 22 is formed with the large diameter portion 22a directed toward the eccentric direction of the central axis O of the screw hole 16, so that the screw member 14 is screwed into the screw hole 16. Chip 3
When fixing the chip 2, one of the projecting portions 14b of the head portion 14a of the screw member 14 is brought into contact with the large diameter portion 22a so that the tip 2
1 will be pressed.
【００３３】次に、本発明の実施の第３形態を図６およ
び図７を参照しながら説明する。これらの図にあって、
符号３１はチップ座、３２は螺子孔を示している。Next, a third embodiment of the present invention will be described with reference to FIGS. 6 and 7. In these figures,
Reference numeral 31 is a tip seat, and 32 is a screw hole.
【００３４】第３形態と第１形態との異なる点は、図６
および図７に示すように、第１形態のチップ座１２に形
成された螺子孔１６の中心軸線Ｏがチップ座１２に位置
決めされるチップ１３のボルト挿入孔１５の中心軸線
Ｏ’に平行であったのに対して、第３形態におけるチッ
プ座３１の底面３１ａに形成された螺子孔３２は、その
中心軸線Ｏがチップ座３１に位置決めされるチップ１３
のボルト挿入孔１５の中心軸線Ｏ’に対して隣接する２
つの壁面３１ｂの交差方向（図６の（ａ）における矢印
方向）に傾斜して設けられている点である。すなわち、
螺子部材１４を螺子孔３２にねじ込むことにより、螺子
部材１４はその頭部１４ａを壁面３１ｂ側に傾けて螺着
され、その突出部１４ｂがボルト挿通孔１５の壁面３１
ｂ側の内周（テーパ形状とされた大径部１５ａの壁面）
を押さえて、第１形態と同様に、チップ１３をチップ座
３１の底面３１ａおよび壁面３１ｂに押し付けてチップ
１３の位置決めおよび固定が行われる。The difference between the third form and the first form is that in FIG.
As shown in FIG. 7 and FIG. 7, the central axis O of the screw hole 16 formed in the tip seat 12 of the first embodiment is parallel to the central axis O ′ of the bolt insertion hole 15 of the tip 13 positioned in the tip seat 12. On the other hand, in the screw hole 32 formed in the bottom surface 31 a of the tip seat 31 in the third embodiment, the center axis O of the screw hole 32 is positioned in the tip seat 31.
2 adjacent to the central axis O ′ of the bolt insertion hole 15 of
This is a point provided so as to be inclined in the intersecting direction of the two wall surfaces 31b (the arrow direction in FIG. 6A). That is,
By screwing the screw member 14 into the screw hole 32, the screw member 14 is screwed with its head portion 14a tilted toward the wall surface 31b side, and its protruding portion 14b is attached to the wall surface 31 of the bolt insertion hole 15.
Inner circumference on b side (wall surface of large-diameter portion 15a having tapered shape)
By pressing, the chip 13 is pressed against the bottom surface 31a and the wall surface 31b of the chip seat 31 to position and fix the chip 13 as in the first embodiment.
【００３５】さらに、第３形態におけるスローアウェイ
チップのクランプ機構では、第１形態と同様に、螺子部
材１４の頭部１４ａの形状をボルト挿通孔１５の小径部
１５ｂより若干小さくかつ貫通可能に形成しているの
で、斜めに螺着された螺子部材１４を緩めるだけで完全
に取り外さなくても、容易にチップ１３の取り外しおよ
び取り付けを行うことができる。Further, in the throw-away tip clamping mechanism according to the third embodiment, as in the first embodiment, the shape of the head portion 14a of the screw member 14 is formed to be slightly smaller than the small diameter portion 15b of the bolt insertion hole 15 and pierceable. Therefore, it is possible to easily remove and attach the chip 13 without completely removing it by only loosening the screw member 14 obliquely screwed.
【００３６】なお、上記の各形態においては、正方形状
のチップ１３、３１としたが、他の形状のチップでも構
わない。例えば、丸チップや多角形状のものでもよい。
また、ボルト挿通孔１５の小径部１５ｂおよび螺子部材
１４の頭部１４ａの形状を正方形としたが、小径部１５
ｂに螺子部材１４が貫通可能であるなら他の正多角形状
または円形状としても構わない。例えば、三角形状とし
ても構わない。なお、多角形状等の非円形状とした場合
は、円形状とした場合に比べて螺子部材とボルト挿通孔
との接触部が増すため、より固定強度を高めることがで
きる。In each of the above embodiments, the square chips 13 and 31 are used, but chips of other shapes may be used. For example, a round chip or a polygonal shape may be used.
Further, although the small-diameter portion 15b of the bolt insertion hole 15 and the head 14a of the screw member 14 have a square shape, the small-diameter portion 15
Other regular polygonal shapes or circular shapes may be used as long as the screw member 14 can penetrate through b. For example, it may be triangular. In the case of a non-circular shape such as a polygonal shape, the number of contact portions between the screw member and the bolt insertion hole is larger than in the case of a circular shape, so that the fixing strength can be further increased.
【００３７】[0037]
【発明の効果】本発明によれば、以下の効果を奏する。 （１）請求項１記載のスローアウェイチップによれば、
ボルト挿通孔を螺子部材の頭部が貫通可能な形状として
いるので、螺子部材を完全に取り外さなくても、螺子部
材を緩めた状態でその頭部に対してボルト挿通孔を通過
させることにより、チップを容易に着脱することがで
き、チップ交換の作業性を向上させることができる。 （２）請求項２記載のスローアウェイチップによれば、
小径部の断面形状を非円形としているので、円形状とし
た場合に比べて螺子部材の頭部とボルト挿通孔内周面と
の接触部が増してより固定強度を高めることができ、螺
子部材に加わる応力集中を抑制して、螺子部材の変形等
を防ぐことができる。 （３）請求項３記載のスローアウェイチップによれば、
大径部をテーパ形状とし、小径部の隣接する角部間に位
置する前記大径部の壁面を、前記螺子部材の頭部による
被押圧面としているので、螺子部材の頭部がテーパ形状
の壁面を押し付けるとともに、チップをチップ座の底面
および壁面に押し付けてチップの位置決めおよび固定を
同時にかつ容易に行うことができる。 （４）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、螺子孔をその中心軸がチップ座に位置決
めされるチップのボルト挿入孔の中心軸に対して壁面寄
りに偏心して設けており、かつ、突出部を有する螺子部
材の頭部をボルト挿通孔に貫通可能な形状としているの
で、螺子部材をねじ込むことにより、突出部でボルト挿
通孔の壁面側の内周を押さえてチップの位置決めおよび
固定を容易に行うことができるとともに、チップの交換
時には、螺子部材を完全に取り外さなくても、螺子部材
を緩めた状態でチップを容易に着脱することができ、交
換作業の高効率化を図ることができる。According to the present invention, the following effects can be obtained. (1) According to the throw-away tip of claim 1,
Since the head portion of the screw member has a shape through which the bolt insertion hole can penetrate, even if the screw member is not completely removed, by letting the screw member pass through the bolt insertion hole in the loosened state, The tip can be easily attached and detached, and the workability of tip replacement can be improved. (2) According to the throw-away tip of claim 2,
Since the cross-sectional shape of the small-diameter portion is non-circular, the contact portion between the head of the screw member and the inner peripheral surface of the bolt insertion hole can be increased compared to the case where it is circular, and the fixing strength can be further increased. It is possible to suppress the stress concentration on the screw member and prevent the screw member from being deformed. (3) According to the throw-away tip of claim 3,
Since the large-diameter portion has a taper shape and the wall surface of the large-diameter portion located between the adjacent corners of the small-diameter portion is the surface to be pressed by the head of the screw member, the head of the screw member has a taper shape. While the wall surface is pressed, the chip can be positioned and fixed simultaneously and easily by pressing the chip against the bottom surface and the wall surface of the chip seat. (4) According to the clamp mechanism of the throw-away tip of the fourth aspect, the screw hole is provided so that its central axis is eccentric toward the wall surface with respect to the central axis of the bolt insertion hole of the tip whose position is located in the tip seat. Moreover, since the head of the screw member having the protruding portion is formed so as to be able to penetrate into the bolt insertion hole, by screwing the screw member, the inner periphery of the wall surface side of the bolt insertion hole is pressed by the protruding portion to position the chip. And the fixing can be performed easily, and at the time of replacement of the tip, it is possible to easily attach and detach the tip with the screw member loosened without removing the screw member completely. Can be planned.
【００３８】（５）請求項５記載のスローアウェイチッ
プのクランプ機構によれば、螺子孔をその中心軸線をチ
ップ座に位置決めされるチップのボルト挿入孔の中心軸
線に対して壁面側に傾斜して設けており、かつ、突出部
を有する螺子部材の頭部をボルト挿通孔に貫通可能な形
状としているので、螺子部材をねじ込むことにより、突
出部でボルト挿通孔の壁面側の内周を押さえてチップの
位置決めおよび固定を容易に行うことができるととも
に、チップの交換時には、螺子部材を完全に取り外さな
くても、螺子部材を緩めた状態でチップを容易に着脱す
ることができ、交換作業の高効率化を図ることができ
る。(5) According to the clamp mechanism of the throw-away tip of the fifth aspect, the screw hole is inclined toward the wall surface side with respect to the central axis of the bolt insertion hole of the tip whose central axis is positioned at the tip seat. Since the head portion of the screw member having the protrusion is formed so as to be able to penetrate into the bolt insertion hole, by screwing the screw member, the protrusion suppresses the inner circumference on the wall surface side of the bolt insertion hole. The chip can be easily positioned and fixed with the screw, and at the time of chip replacement, the chip can be easily attached and detached with the screw member loosened without completely removing the screw member. High efficiency can be achieved.
【００３９】（６）請求項６記載のスローアウェイチッ
プのクランプ機構によれば、正多角形状の小径部におい
て、その一つの角部を、チップを位置決めした状態で、
前記螺子孔の中心軸線の偏心または傾斜方向に向けて形
成しているので、螺子部材の頭部の突出部のうち２つが
それぞれボルト挿通孔の壁面側の内周に当接してチップ
を押さえ付けることにより接触部が２つとなり、高い固
定強度が得られ、螺子部材に加わる応力の集中を抑制す
ることにより、螺子部材の変形等を防ぐことができる。(6) According to the throw-away tip clamping mechanism of the sixth aspect, one corner portion of the regular polygonal small-diameter portion is positioned with the tip positioned.
Since the screw holes are formed in an eccentric or inclined direction of the central axis of the screw hole, two of the projecting portions of the head of the screw member are brought into contact with the inner periphery of the wall surface side of the bolt insertion hole to press the chip. As a result, the number of contact portions becomes two, high fixing strength is obtained, and by suppressing the concentration of stress applied to the screw member, deformation of the screw member can be prevented.
【図１】本発明に係るスローアウェイチップのクランプ
機構の第１形態におけるチップ固定時の状態を示す正面
図および前記正面図のＸ−Ｘ矢視断面図である。FIG. 1 is a front view showing a state when a tip is fixed in a first embodiment of a throw-away tip clamping mechanism according to the present invention, and a cross-sectional view taken along the line XX of the front view.
【図２】本発明に係るスローアウェイチップのクランプ
機構の第１形態におけるスローアウェイチップを示す正
面図である。FIG. 2 is a front view showing the throw-away tip in the first embodiment of the clamp mechanism for the throw-away tip according to the present invention.
【図３】本発明に係るスローアウェイチップのクランプ
機構の第１形態におけるチップ取り外し作業時の状態を
示す正面図および前記正面図のＸ’−Ｘ’矢視断面図で
ある。3A and 3B are a front view and a cross-sectional view taken along arrow X'-X 'of the front view showing a state at the time of chip removal work in the first embodiment of the clamp mechanism for the throw-away tip according to the present invention.
【図４】本発明に係るスローアウェイチップのクランプ
機構の第２形態におけるチップ固定時の状態を示す正面
図および前記正面図のＹ−Ｙ矢視断面図である。FIG. 4 is a front view showing a state when a tip is fixed in a second embodiment of the throw-away tip clamping mechanism according to the present invention and a cross-sectional view taken along the line YY of the front view.
【図５】本発明に係るスローアウェイチップのクランプ
機構の第２形態におけるチップ取り外し作業時の状態を
示す正面図および前記正面図のＹ’−Ｙ’矢視断面図で
ある。5A and 5B are a front view and a sectional view taken along the line Y'-Y 'of the front view showing a state at the time of tip removal work in the second embodiment of the clamp mechanism for the throw-away tip according to the present invention.
【図６】本発明に係るスローアウェイチップのクランプ
機構の第３形態におけるチップ固定時の状態を示す正面
図および前記正面図のＺ−Ｚ矢視断面図である。6A and 6B are a front view showing a state when a tip is fixed in a third embodiment of a throw-away tip clamping mechanism according to the present invention, and a sectional view taken along the line ZZ of the front view.
【図７】本発明に係るスローアウェイチップのクランプ
機構の第３形態におけるチップ取り外し作業時の状態を
示す正面図および前記正面図のＺ’−Ｚ’矢視断面図で
ある。7A and 7B are a front view and a cross-sectional view taken along the arrow Z'-Z 'of the front view showing a state at the time of tip removal work in the third embodiment of the clamp mechanism for the throw-away tip according to the present invention.
【図８】本発明に係るスローアウェイチップのクランプ
機構の従来例を示す縦断面図である。FIG. 8 is a vertical sectional view showing a conventional example of a clamp mechanism for a throw-away tip according to the present invention.
１１ 工具本体 １２、３１ チップ座 １２ａ、３１ａ 底面 １２ｂ、３１ｂ 壁面 １３、２１ スローアウェイチップ １３ｂ 下面 １３ｃ 側面 １４ 螺子部材 １４ａ 頭部 １４ｂ 突出部 １５、２２ ボルト挿通孔 １５ａ、２２ａ 大径部 １５ｂ 小径部 １６、３２ 螺子孔 Ｏ、Ｏ’ 中心軸線 11 Tool body 12, 31 Tip seat 12a, 31a Bottom surface 12b, 31b Wall surface 13, 21 Throwaway tip 13b Lower surface 13c Side surface 14 Screw member 14a Head portion 14b Projection portion 15, 22 Bolt insertion hole 15a, 22a Large diameter portion 15b Small diameter portion 16, 32 Screw holes O, O'Center axis
Claims (6)
ルト挿通孔に挿通させた螺子部材でチップ座に螺子止め
されるとともに前記螺子部材の頭部で押圧されるスロー
アウェイチップにおいて、 前記ボルト挿通孔は、前記螺子部材の頭部が貫通可能な
形状とされることを特徴としたスローアウェイチップ。1. A throw-away tip that is screwed to a chip seat by a screw member that is inserted through a bolt insertion hole that is formed so as to penetrate from the upper surface to the lower surface, and that is pressed by the head of the screw member. The throw-away tip is characterized in that the insertion hole has a shape through which the head of the screw member can penetrate.
おいて、 前記ボルト挿通孔は、上面側に形成された大径部と、該
大径部に連通するとともに大径部より径の小さな小径部
から構成され、 該小径部は、断面形状が非円形とされていることを特徴
としたスローアウェイチップ。2. The throw-away tip according to claim 1, wherein the bolt insertion hole is formed from a large diameter portion formed on an upper surface side and a small diameter portion communicating with the large diameter portion and having a diameter smaller than the large diameter portion. A throw-away tip characterized in that the small-diameter portion has a non-circular cross-sectional shape.
おいて、 前記小径部は、断面形状が大径部に内接する多角形とさ
れ、 前記大径部は、上面から下面に向けて徐々に径が小さく
なるテーパ形状とされ、 前記小径部の隣接する角部間に位置する前記大径部の壁
面が、前記螺子部材の頭部による被押圧面とされること
を特徴としたスローアウェイチップ。3. The throw-away tip according to claim 2, wherein the small-diameter portion has a polygonal cross-sectional shape inscribed in the large-diameter portion, and the large-diameter portion has a diameter gradually increasing from the upper surface to the lower surface. A throw-away tip, which has a taper shape that becomes smaller, and a wall surface of the large-diameter portion located between adjacent corners of the small-diameter portion is a surface to be pressed by the head of the screw member.
面に向けて徐々に径が小さくなるテーパ部を有するボル
ト挿通孔が設けられ、 一方、スローアウェイチップが装着される工具本体のチ
ップ座は、前記スローアウェイチップの下面が着座する
平坦な底面とスローアウェイチップの側面が当接する壁
面とを備えるとともに、前記ボルト挿通孔に対応する螺
子孔が底面に形成され、前記ボルト挿通孔に通じた螺子
部材によってスローアウェイチップをチップ座に螺子止
めするスローアウェイチップのクランプ機構であって、 前記螺子孔は、その中心軸線がチップ座に位置決めされ
るスローアウェイチップのボルト挿入孔の中心軸線に対
して前記壁面寄りに偏心して設けられ、 前記螺子部材は、その頭部にボルト挿通孔の前記壁面側
の内周を押さえて前記スローアウェイチップをチップ座
の底面および壁面に押し付ける突出部を備え、かつ前記
頭部が、前記ボルト挿通孔に貫通可能な形状とされてい
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。4. The throw-away tip is provided with a bolt insertion hole having a tapered portion whose diameter gradually decreases from the upper surface to the lower surface, while the tip seat of the tool body to which the throw-away tip is mounted is The bottom surface of the throw-away tip is provided with a flat bottom surface and the side surface of the throw-away tip is in contact with the wall surface, and a screw hole corresponding to the bolt insertion hole is formed in the bottom surface, and a screw threaded to the bolt insertion hole is formed. A clamp mechanism of a throw-away tip for screwing a throw-away tip to a tip seat by a member, wherein the screw hole has a central axis thereof with respect to a central axis of a bolt insertion hole of the throw-away tip positioned at the chip seat. The screw member is provided eccentrically toward the wall surface, and the screw member pushes the inner periphery of the bolt insertion hole on the wall surface side on its head. A clamp mechanism for a throw-away tip, comprising a protrusion for pressing the throw-away tip against a bottom surface and a wall surface of a tip seat, and the head has a shape capable of penetrating the bolt insertion hole. .
面に向けて徐々に径が小さくなるテーパ部を有するボル
ト挿通孔が設けられ、 一方、スローアウェイチップが装着される工具本体のチ
ップ座は、前記スローアウェイチップの下面が着座する
平坦な底面とスローアウェイチップの側面が当接する壁
面とを備えるとともに、前記ボルト挿通孔に対応する螺
子孔が底面に形成され、前記ボルト挿通孔に通じた螺子
部材によってスローアウェイチップをチップ座に螺子止
めするスローアウェイチップのクランプ機構であって、 前記螺子孔は、その中心軸線がチップ座に位置決めされ
るスローアウェイチップのボルト挿入孔の中心軸線に対
して前記壁面側に傾斜して設けられ、 前記螺子部材は、その頭部にボルト挿通孔の前記壁面側
の内周を押さえて前記スローアウェイチップをチップ座
の底面および壁面に押し付ける突出部を備え、かつ前記
頭部が、前記ボルト挿通孔に貫通可能な形状とされてい
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。5. The throw-away tip is provided with a bolt insertion hole having a taper portion whose diameter gradually decreases from the upper surface to the lower surface, while the tip seat of the tool body to which the throw-away tip is mounted is The bottom surface of the throw-away tip is provided with a flat bottom surface and the side surface of the throw-away tip is in contact with the wall surface, and a screw hole corresponding to the bolt insertion hole is formed in the bottom surface, and a screw threaded to the bolt insertion hole is formed. A clamp mechanism of a throw-away tip for screwing a throw-away tip to a tip seat by a member, wherein the screw hole has a central axis thereof with respect to a central axis line of a bolt insertion hole of the throw-away tip positioned at the chip seat. The screw member is provided so as to be inclined toward the wall surface side, and the screw member presses the inner periphery of the bolt insertion hole on the wall surface side on its head. A clamp mechanism for a throw-away tip, further comprising a protrusion for pressing the throw-away tip against a bottom surface and a wall surface of a tip seat, and the head portion having a shape capable of penetrating the bolt insertion hole.
イチップのクランプ機構において、前記ボルト挿通孔
は、その内径が最小となる小径部の断面形状が正多角形
とされ、 前記螺子部材の頭部は、その外周形状が前記小径部の形
状と同じ正多角形とされてなり、 該小径部の一つの角部は、前記スローアウェイチップが
位置決めされた状態で、前記螺子孔の中心軸線がボルト
挿通孔の中心軸線に対して偏心または傾斜された方向に
向けて形成されてい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。6. The clamping mechanism for a throw-away tip according to claim 4 or 5, wherein the bolt insertion hole has a small-diameter portion whose inner diameter is the smallest and whose cross-sectional shape is a regular polygon. Has an outer peripheral shape of the same polygonal shape as the shape of the small diameter portion, and at one corner of the small diameter portion, the central axis of the screw hole is a bolt with the throw-away tip positioned. A throwaway tip clamping mechanism, which is formed in a direction eccentric or inclined with respect to a central axis of the insertion hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27037895A JPH09108909A (en) | 1995-10-18 | 1995-10-18 | Throw-away tip and its clamping mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP27037895A JPH09108909A (en) | 1995-10-18 | 1995-10-18 | Throw-away tip and its clamping mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH09108909A true JPH09108909A (en) | 1997-04-28 |
Family
ID=17485429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP27037895A Withdrawn JPH09108909A (en) | 1995-10-18 | 1995-10-18 | Throw-away tip and its clamping mechanism |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH09108909A (en) |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006263856A (en) * | 2005-03-24 | 2006-10-05 | Tungaloy Corp | Throw-away cutting tool |
| US7785045B2 (en) * | 2006-02-15 | 2010-08-31 | Seco Tools Ab | Insert with a mounting hole and toolholder including a cutting insert |
| WO2010141966A1 (en) * | 2009-06-10 | 2010-12-16 | Ceratizit Austria Gesellschaft M.B.H. | Cutting tool |
| JP2015157355A (en) * | 2009-02-27 | 2015-09-03 | ノー スクリュー リミテッド | Cutting tool, cutting tool holder, and cutting insert therefor |
| US10307833B2 (en) | 2015-02-04 | 2019-06-04 | No Screw Ltd. | Cutting tool comprising a cutting tool holder and a cutting insert therefor |
| US10307832B2 (en) | 2015-04-30 | 2019-06-04 | No Screw Ltd. | Dynamic clamping mechanism |
| US10500647B2 (en) | 2013-09-03 | 2019-12-10 | No Screw Ltd. | Mounting mechanism for a cutting insert, a cutting insert therefor and a cutting tool using said insert |
-
1995
- 1995-10-18 JP JP27037895A patent/JPH09108909A/en not_active Withdrawn
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006263856A (en) * | 2005-03-24 | 2006-10-05 | Tungaloy Corp | Throw-away cutting tool |
| US7785045B2 (en) * | 2006-02-15 | 2010-08-31 | Seco Tools Ab | Insert with a mounting hole and toolholder including a cutting insert |
| JP2015157355A (en) * | 2009-02-27 | 2015-09-03 | ノー スクリュー リミテッド | Cutting tool, cutting tool holder, and cutting insert therefor |
| USRE46858E1 (en) | 2009-02-27 | 2018-05-22 | No Screw Ltd. | Cutting tool, cutting tool holder and cutting insert therefor |
| WO2010141966A1 (en) * | 2009-06-10 | 2010-12-16 | Ceratizit Austria Gesellschaft M.B.H. | Cutting tool |
| CN102458734A (en) * | 2009-06-10 | 2012-05-16 | 森拉天时奥地利有限公司 | Cutting tool |
| US8950983B2 (en) | 2009-06-10 | 2015-02-10 | Ceratizit Austria Gesellschaft Mbh | Cutting tool |
| US10500647B2 (en) | 2013-09-03 | 2019-12-10 | No Screw Ltd. | Mounting mechanism for a cutting insert, a cutting insert therefor and a cutting tool using said insert |
| US10307833B2 (en) | 2015-02-04 | 2019-06-04 | No Screw Ltd. | Cutting tool comprising a cutting tool holder and a cutting insert therefor |
| US10307832B2 (en) | 2015-04-30 | 2019-06-04 | No Screw Ltd. | Dynamic clamping mechanism |
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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: 20030107 |