JP2009056535A - Rotary cutting tool - Google Patents

Rotary cutting tool Download PDF

Info

Publication number
JP2009056535A
JP2009056535A JP2007225324A JP2007225324A JP2009056535A JP 2009056535 A JP2009056535 A JP 2009056535A JP 2007225324 A JP2007225324 A JP 2007225324A JP 2007225324 A JP2007225324 A JP 2007225324A JP 2009056535 A JP2009056535 A JP 2009056535A
Authority
JP
Japan
Prior art keywords
cutting
cutting edge
blade
tip
mounting groove
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
JP2007225324A
Other languages
Japanese (ja)
Inventor
Yuji Shinjo
裕二 新城
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.)
Tungaloy Corp
Original Assignee
Tungaloy Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Tungaloy Corp filed Critical Tungaloy Corp
Priority to JP2007225324A priority Critical patent/JP2009056535A/en
Publication of JP2009056535A publication Critical patent/JP2009056535A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Milling Processes (AREA)

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary cutting tool which prevents degradation of strength of a tool main body, increase of forming costs and material costs of a cutting-edge tip, and increase of cutting costs and degradation of machining precision of a tip mounting groove, and facilitates adjustment of positioning of a cutting edge. <P>SOLUTION: According to the structure of the rotary cutting tool, the cutting-edge tips 100 each having a right cutting edge 103 and deflectively arranged on one end face of a tool main body 1 formed like a substantial disk rotating about an axis, and the cutting-edge tips 200 each having a left cutting edge 203 and deflectively arranged on the other end face of the tool main body 1, are partly superposed on each other with respect to rotating tracks about the axis, and therefore they constitute a continuous cutting edge over a cutting edge width in an axial direction. Herein bottom wall surfaces 10b, 20b of the tip mounting grooves abutting on the respective cutting-edge tips 100, 200 are formed so as to diagonally extend with respect to the axis, and to progressively approach the end faces of the tool main body 1, to which the cutting-edge tips 100, 200 are deflected, as becoming closer to radially inner side of the tool main body 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、右刃および左刃を有する切刃チップを装着してなる転削工具に関する。   The present invention relates to a turning tool having a cutting edge tip having a right blade and a left blade.

工具本体のチップ取付溝内に右刃および左刃を有する切刃チップが組み込まれた転削工具として、例えば特開平８−３９３３１号公報に開示されたものがある。この転削工具は、切刃チップの形状が２種類あって、右刃と左刃とが外周方向に交互に組込まれて回転軌跡が連続した切刃を形成するようになっている。工具本体と切刃チップとの間にはシートがあって、皿ビスにより工具本体に固定されている。切刃チップの刃幅方向位置は、リング状をなす２枚の面板間の距離により決められる。右刃を有する切刃チップに当接させ、左刃を有する切刃チップは面板に当接させることにより刃幅方向位置が決まる。位置が決まったら、面板はボルトにより固定される。また、切刃チップは楔部品を工具本体に螺合するねじを操作して沈み込ませることにより、楔作用によりチップ取付溝内に押圧固定される（例えば、特許文献１参照）。
特開２００４−５８２２４号公報 An example of a rolling tool in which a cutting edge tip having a right blade and a left blade is incorporated in a tip mounting groove of a tool body is disclosed in, for example, Japanese Patent Application Laid-Open No. 8-39331. This cutting tool has two types of shapes of cutting edge tips, and a right blade and a left blade are alternately incorporated in the outer peripheral direction to form a cutting blade having a continuous rotation locus. There is a sheet between the tool body and the cutting edge tip, which is fixed to the tool body with a countersunk screw. The position of the cutting edge tip in the blade width direction is determined by the distance between two ring-shaped face plates. The position in the width direction of the blade is determined by contacting the cutting edge tip having the right edge with the cutting edge tip having the left edge against the face plate. Once the position is determined, the face plate is fixed with bolts. Further, the cutting edge tip is pressed and fixed in the tip mounting groove by a wedge action by operating a screw for screwing the wedge part into the tool body (see, for example, Patent Document 1).
JP 2004-58224 A

特許文献１に記載された発明では、切刃チップを刃幅方向に移動させることにより該切刃チップの刃幅方向位置が決められるため、切刃チップに当接するチップ取付溝が工具本体を刃幅方向に貫通して形成される。そのため、工具本体の外周部の取付溝周辺における強度が低下するおそれがあった。   In the invention described in Patent Document 1, since the position in the blade width direction of the cutting edge tip is determined by moving the cutting edge tip in the blade width direction, the tip mounting groove that abuts the cutting edge tip causes the tool body to It is formed to penetrate in the width direction. For this reason, the strength around the mounting groove on the outer periphery of the tool body may be reduced.

また、各切刃チップにおいては、刃幅方向の長さを確保するため大型化してしまい、該切刃チップの成形コストおよび材料コストの高騰といった問題があった。切刃チップの大型化に伴いチップ取付溝が工具本体の径方向で深くなるため、該チップ取付溝の機械加工が難しくなり加工コストの高騰や加工精度の悪化といった問題が生じる。   Further, each cutting edge tip is increased in size in order to ensure the length in the blade width direction, and there is a problem that the molding cost and material cost of the cutting edge tip are increased. As the cutting edge tip becomes larger, the tip mounting groove becomes deeper in the radial direction of the tool body, which makes it difficult to machine the tip mounting groove, resulting in problems such as a rise in processing cost and deterioration in processing accuracy.

また、切刃の位置を調整するに際し、切刃チップを軸線方向、径方向の両方向に調整しなければならなかった。   Further, when adjusting the position of the cutting edge, the cutting edge tip has to be adjusted in both the axial direction and the radial direction.

本発明は、上記問題を解決するためになされたもので、工具本体の強度低下、切刃チップの成形コストおよび材料コストの高騰を防止し、さらに、チップ取付溝の加工コストの高騰および加工精度の悪化を防止し、しかも、切刃の位置の調整を簡易にした転削工具を提供することを目的とする。   The present invention has been made to solve the above problems, and prevents a decrease in strength of the tool body, an increase in molding cost and material cost of the cutting edge tip, and an increase in machining cost and machining accuracy of the chip mounting groove. It is an object of the present invention to provide a turning tool that prevents the deterioration of the cutting edge and that makes it easy to adjust the position of the cutting edge.

上記課題を解決するために、本発明は以下の構成を有する。
請求項１に係る発明は、軸線まわりに回転させられる略円板状をなす工具本体の外周部分に備わるチップ取付溝内には、右刃を有する切刃チップが前記工具本体の一端面側に偏倚して配設されるとともに、左刃を有する切刃チップが前記工具本体の他端面側に配設されてなる転削工具であって、前記右刃および前記左刃が前記軸線まわりの回転軌跡の一部を重複することにより前記軸線方向の刃幅にわたって連続した切刃が構成され、前記切刃チップに当接するチップ取付溝の底壁面が、前記軸線に斜交しかつ前記工具本体の径方向内側に向かうにつれ前記切刃チップの偏倚する前記工具本体の端面側に漸次接近するように形成されていることを特徴とする転削工具である。 In order to solve the above problems, the present invention has the following configuration.
According to the first aspect of the present invention, a cutting edge tip having a right blade is provided on one end surface side of the tool body in a tip mounting groove provided in an outer peripheral portion of a substantially disk-shaped tool body that is rotated around an axis. A rolling tool in which a cutting edge tip having a left blade is disposed on the other end surface side of the tool body, and the right blade and the left blade rotate around the axis. By overlapping a part of the locus, a cutting blade that is continuous over the blade width in the axial direction is configured, and the bottom wall surface of the tip mounting groove that abuts the cutting blade tip is oblique to the axis and the tool body The rolling tool is formed so as to gradually approach the end face side of the tool body where the cutting edge tip is biased as it goes radially inward.

請求項１に係る発明によれば、切刃チップに当接するチップ取付溝の底壁面が、軸線に斜交しかつ工具本体の径方向内側に向かうにつれ前記切刃チップの偏倚する工具本体の端面側に漸次接近するように形成されていることから、前記チップ取付溝が軸線方向に沿って工具本体を貫通する従来の転削工具にくらべ、工具本体の外周部における強度低下を防止することができる。   According to the first aspect of the present invention, the end surface of the tool body in which the bottom wall surface of the chip mounting groove that abuts on the cutting edge chip is oblique to the axis and is displaced inward in the radial direction of the tool body. Since the tip mounting groove is formed so as to gradually approach the side, the strength reduction at the outer peripheral portion of the tool body can be prevented as compared with the conventional rolling tool in which the tool mounting groove penetrates the tool body along the axial direction. it can.

右刃と左刃によって形成される切刃が該転削工具の外周部における両端面間距離とほぼ同じか大きい刃幅を有する場合、従来工具では、各切刃チップが大型化してしまうが、請求項１に係る発明によれば、各切刃チップが大型化しないので、該切刃チップの成形コストおよび材料コストの高騰を防止することができる。   When the cutting blade formed by the right blade and the left blade has a blade width that is approximately the same as or larger than the distance between both end faces of the outer peripheral portion of the rolling tool, in the conventional tool, each cutting blade tip is enlarged, According to the invention which concerns on Claim 1, since each cutting edge chip | tip is not enlarged, the shaping | molding cost and material cost of this cutting edge chip | tip can be prevented from rising.

さらに、チップ取付溝が深くなることがないので、該チップ取付溝の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化といった問題が解消する。   Further, since the chip mounting groove does not become deep, it is possible to prevent the machining of the chip mounting groove from being difficult, and problems such as a rise in processing cost and deterioration in processing accuracy are solved.

しかも、切刃の位置の調整は、チップ取付溝の底壁面に垂直な方向に切刃チップを移動させるだけなのできわめて簡易になる。   In addition, the adjustment of the position of the cutting blade is extremely simple because it only moves the cutting blade tip in a direction perpendicular to the bottom wall surface of the chip mounting groove.

請求項２に係る発明は、前記チップ取付溝の前記工具本体の径方向外側を向く壁面と前記軸線とのなす角度が３０°〜６０°の範囲とされていることを特徴とする請求項１に記載の転削工具である。   The invention according to claim 2 is characterized in that an angle formed between a wall surface of the tip mounting groove facing radially outward of the tool body and the axis is 30 ° to 60 °. It is a turning tool as described in.

請求項２に係る発明によれば、チップ取付溝が工具本体の軸線方向で該工具本体を貫通することが避けられるため、該工具本体の外周部における強度低下を防止することができる。しかも、チップ取付溝が深くなることを防止するので、該チップ取付溝の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化といった問題が解消する。チップ取付溝の底壁面と軸線とのなす角度が３０°未満になると、チップ取付溝が深くなるため、チップ取付溝の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化を防止する効果が小さくなり、前記角度が６０°を超えると、工具本体の軸線方向でチップ取付溝が形成される長さが長くなるため、工具本体の外周部の強度低下を防止する効果が小さくなってしまう。   According to the second aspect of the present invention, since the chip mounting groove can be prevented from penetrating the tool body in the axial direction of the tool body, it is possible to prevent a decrease in strength at the outer peripheral portion of the tool body. In addition, since the chip mounting groove is prevented from being deepened, it is possible to prevent the machining of the chip mounting groove from being difficult, and problems such as an increase in processing cost and deterioration in processing accuracy are solved. If the angle formed between the bottom wall surface of the chip mounting groove and the axis is less than 30 °, the chip mounting groove becomes deep, preventing the machining of the chip mounting groove from becoming difficult, and increasing the processing cost and deterioration of the processing accuracy. When the angle exceeds 60 °, the length of the tip mounting groove formed in the axial direction of the tool body becomes longer, and the effect of preventing the strength reduction of the outer peripheral portion of the tool body is small. turn into.

請求項３に係る発明は、前記右切刃を有する切刃チップ又は前記左切刃を有する切刃チップの少なくともいずれか一方と、該切刃チップが装着されるチップ取付溝の底壁面との間にシートを介在させることにより前記右刃又は前記左刃の少なくともいずれか一方の位置が調整可能とされていることを特徴とする請求項１又は２に記載の転削工具である。   According to a third aspect of the present invention, there is provided at least one of a cutting edge tip having the right cutting edge or a cutting edge tip having the left cutting edge, and a bottom wall surface of a tip mounting groove on which the cutting edge tip is mounted. The rolling tool according to claim 1 or 2, wherein the position of at least one of the right blade and the left blade is adjustable by interposing a sheet therebetween.

請求項３に係る発明によれば、右切刃又は左切刃の少なくともいずれか一方の位置の調整は、チップ取付溝の底壁面に垂直な方向に切刃チップを移動させるだけなのできわめて簡易になる。切刃チップを移動させる量は、切刃チップとチップ取付溝の底壁面との間に介在させたシートの厚み又は枚数により調整可能となる。   According to the invention of claim 3, the adjustment of the position of at least one of the right cutting blade and the left cutting blade is very simple because the cutting blade tip is moved in a direction perpendicular to the bottom wall surface of the chip mounting groove. Become. The amount by which the cutting edge tip is moved can be adjusted by the thickness or the number of sheets interposed between the cutting edge tip and the bottom wall surface of the chip mounting groove.

本願発明によれば、切刃チップに当接するチップ取付溝の底壁面が、軸線に斜交しかつ工具本体の径方向内側に向かうにつれ前記切刃チップの偏倚する工具本体の端面側に漸次接近するように形成されていることから、前記チップ取付溝が軸線方向に沿って工具本体を貫通する従来の転削工具にくらべ、工具本体の外周部における強度低下を防止することができる。
さらに、各切刃チップが大型化しないので、該切刃チップの成形コストおよび材料コストの高騰を防止することができる。
さらに、チップ取付溝が深くなることがないので、該チップ取付溝の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化といった問題が解消する。
しかも、切刃の位置の調整は、チップ取付溝の底壁面に垂直な方向に切刃チップを移動させるだけなのできわめて簡易になる。 According to the present invention, the bottom wall surface of the tip mounting groove that abuts the cutting edge tip gradually approaches the end face side of the tool body where the cutting edge tip is biased as it obliquely crosses the axis and goes radially inward of the tool body. Therefore, compared with the conventional rolling tool in which the chip mounting groove penetrates the tool body along the axial direction, it is possible to prevent a decrease in strength at the outer peripheral portion of the tool body.
Furthermore, since each cutting edge tip does not increase in size, it is possible to prevent an increase in molding cost and material cost of the cutting edge tip.
Further, since the chip mounting groove does not become deep, it is possible to prevent the machining of the chip mounting groove from being difficult, and problems such as a rise in processing cost and deterioration in processing accuracy are solved.
In addition, the adjustment of the position of the cutting blade is extremely simple because it only moves the cutting blade tip in a direction perpendicular to the bottom wall surface of the chip mounting groove.

本発明を適用した転削工具の一実施形態としてロータ歯切りカッタについて図面を用いながら説明する。図１は、本ロータ歯切りカッタの正面図である。図２は、図１に示すロータ歯切りカッタの平面図である。図３は、図１に示すロータ歯切りカッタの右側面図であり、図４は図１に示すロータ歯切りカッタの切刃回転形状を説明する縦断面図である。図５は、右刃を有する切刃チップの斜視図である。図６は、左刃を有する切刃チップの斜視図である。   A rotor gear cutter will be described with reference to the drawings as an embodiment of a turning tool to which the present invention is applied. FIG. 1 is a front view of the rotor gear cutter. FIG. 2 is a plan view of the rotor gear cutter shown in FIG. FIG. 3 is a right side view of the rotor gear cutter shown in FIG. 1, and FIG. 4 is a longitudinal sectional view for explaining the rotational shape of the cutting blade of the rotor gear cutter shown in FIG. FIG. 5 is a perspective view of a cutting edge tip having a right blade. FIG. 6 is a perspective view of a cutting edge tip having a left blade.

図１〜図３に図示するようにロータ歯切りカッタは、工具本体１の円周方向に略等間隔に設けられたチップ取付溝１０、２０内に切刃チップ１００、２００が組込まれたものである。図４〜図６からわかるように切刃チップの形状は、２種類あって、右刃１０３を有する切刃チップ１００が工具本体１の一端面側に偏倚して配設されるとともに、左刃２０３を有する切刃チップ２００が工具本体１の他端面側に偏倚して配設されて、外周方向に交互に組込まれている。右刃１０３と左刃２０３とは、互いの回転軌跡の一部が重複して連続した切刃を形成し、その切刃形状が所望するロータの歯形と略等しくなるように形成されている。図４からわかるように、右刃１０３と左刃２０３によって形成される切刃は、工具本体の外周部における両端面より突出しており、前記両端面間距離よりも大きな刃幅を有している。なお、図１〜図３に図示したロータ歯切りカッタでは、右刃１０３を有する切刃チップ１００および左刃２０３を有する切刃チップ２００は、それぞれ９ヶ所に設けられたチップ取付溝１０、２０の全てに装着されておらず、２ヶ所とびに該カッタの円周方向に略等間隔にそれぞれ３ヶ所ずつ装着されているが、全てのチップ取付溝１０、２０に装着されてもよい。   As shown in FIGS. 1 to 3, the rotor gear cutting cutter has cutting blade tips 100 and 200 incorporated in tip mounting grooves 10 and 20 provided at substantially equal intervals in the circumferential direction of the tool body 1. It is. As can be seen from FIGS. 4 to 6, there are two types of the shape of the cutting edge tip, and the cutting edge tip 100 having the right edge 103 is arranged to be biased toward one end surface side of the tool body 1, and the left edge Cutting blade tips 200 having 203 are arranged in a biased manner on the other end surface side of the tool body 1 and are alternately assembled in the outer circumferential direction. The right blade 103 and the left blade 203 are formed such that a part of the rotation trajectory of each other overlaps to form a continuous cutting blade, and the cutting blade shape is substantially equal to the desired tooth profile of the rotor. As can be seen from FIG. 4, the cutting blade formed by the right blade 103 and the left blade 203 protrudes from both end surfaces of the outer peripheral portion of the tool body, and has a blade width larger than the distance between the both end surfaces. . In the rotor gear cutting cutter illustrated in FIGS. 1 to 3, the cutting edge chip 100 having the right blade 103 and the cutting edge chip 200 having the left blade 203 are respectively provided at nine chip mounting grooves 10 and 20. Are attached to all of the chip mounting grooves 10 and 20, although they are attached to each of the two locations at approximately equal intervals in the circumferential direction of the cutter.

切刃チップ１００、２００が組込まれるチップ取付溝１０、２０は、工具本体１の外周面を切欠いて形成されており、回転方向Ｋを向く側壁面１０ａ、２０ａと、工具本体１の径方向外側を向き互いに交差する底壁面１０ｂ、２０ｂと側壁面１０ｃ、２０ｃとが形成され、これらの壁面で切刃チップ１００、２００を当接支持することにより拘束している。チップ取付溝１０、２０の工具回転方向Ｋ前方側に隣接する楔部材挿入溝１１、２１には、ねじ部材Ｎに係合する楔部材Ｗが挿入されており、前記ねじ部材Ｎにより楔部材Ｗを前記楔部材挿入溝１１、２１の底壁面１１ｂ、２１ｂに向かって沈み込ませることにより、楔作用により各切刃チップ１００、２００は、チップ取付溝１０、２０内にそれぞれ押圧固定される。   The chip attachment grooves 10 and 20 into which the cutting edge chips 100 and 200 are assembled are formed by cutting out the outer peripheral surface of the tool body 1, and the side wall surfaces 10 a and 20 a facing the rotation direction K and the radially outer side of the tool body 1. The bottom wall surfaces 10b and 20b and the side wall surfaces 10c and 20c are formed so as to face each other and are constrained by abutting and supporting the cutting edge chips 100 and 200 on these wall surfaces. A wedge member W that engages with the screw member N is inserted into the wedge member insertion grooves 11 and 21 adjacent to the tip mounting grooves 10 and 20 on the front side in the tool rotation direction K, and the wedge member W is inserted by the screw member N. Is depressed toward the bottom wall surfaces 11b and 21b of the wedge member insertion grooves 11 and 21, whereby the cutting edge chips 100 and 200 are pressed and fixed in the chip mounting grooves 10 and 20, respectively, by a wedge action.

チップ取付溝の底壁面１０ｂ、２０ｂは、工具本体１の軸線に斜交しかつ工具本体の径方向内側に向かうにつれ該チップ取付溝に組込まれる切刃チップ１００、２００の偏倚する工具本体１の端面側に漸次接近するように延設されており、その延設される長さが比較的長くなっていて、切刃チップ１００、２００との安定した当接状態を実現する。チップ取付溝の側壁面１０ｃ、２０ｃは、底壁面１０ｂ、２０ｂに交差する方向に延設されており、その延設される長さが比較的短くなっていて、切刃チップ１００、２００の前記底壁面１０ｂ、２０ｂの延設方向に拘束する。工具本体１の切欠きを最小化することおよび切刃チップ１００、２００を安定して拘束することに配慮して、前記交差する角度が３０°〜１５０°の範囲、好ましくは８０°〜１００°の範囲、さらに好ましくは９０°となるように形成されている。   The bottom wall surfaces 10b and 20b of the chip mounting groove are oblique to the axis of the tool main body 1 and the tool tips 1 and 200 of the cutting blade chip 100 and 200 incorporated in the chip mounting groove as they move inward in the radial direction of the tool main body. It extends so as to gradually approach the end face side, and the length of the extension is relatively long, so that a stable contact state with the cutting edge tips 100 and 200 is realized. The side wall surfaces 10c and 20c of the chip mounting groove are extended in a direction intersecting the bottom wall surfaces 10b and 20b, and the extending length is relatively short. The bottom wall surfaces 10b and 20b are restrained in the extending direction. In consideration of minimizing notches in the tool body 1 and stably constraining the cutting edge tips 100, 200, the intersecting angle is in the range of 30 ° to 150 °, preferably 80 ° to 100 °. And more preferably 90 °.

楔部材挿入溝１１、２１についても、該楔部材挿入溝１１、２１に隣接するチップ取付溝１０、２０と略同一方向に延設されている。チップ取付溝１０、２０および楔部材挿入溝１１、２１ともに工具本体１の外周側に開口する一端部を除き端部が閉じた構成となっている。   The wedge member insertion grooves 11 and 21 also extend in substantially the same direction as the chip attachment grooves 10 and 20 adjacent to the wedge member insertion grooves 11 and 21. Both the tip mounting grooves 10 and 20 and the wedge member insertion grooves 11 and 21 are configured such that their ends are closed except for one end opening on the outer peripheral side of the tool body 1.

図５に図示する右刃１０３を有する切刃チップ１００は、平板状をなし、すくい面１０１となる上面の周縁部に右刃１０３が形成され、この右刃１０３から下面に延びる側面が逃げ面１０２とされる。図６に図示する左刃２０３を有する切刃チップ２００も、平板状をなし、すくい面２０１となる上面の周縁部に左刃２０３が形成され、この左刃２０３から下面に延びる側面が逃げ面２０２とされる。チップ取付溝１０、２０に組込まれたとき、各切刃チップ１００、２００は、チップ取付溝の底壁面１０ｂ、２０ｂに当接支持される側面１００ｂ、２００ｂが前記底壁面１０ｂ、２０ｂに対応して工具本体１の軸線に斜交しかつ工具本体の径方向内側に向かうにつれ該切刃チップ１００、２００の偏倚する工具本体１の端面側に漸次接近するように形成されている。   A cutting blade tip 100 having a right blade 103 shown in FIG. 5 is formed in a flat plate shape, the right blade 103 is formed on the peripheral edge of the upper surface that becomes the rake face 101, and the side surface extending from the right blade 103 to the lower surface is a relief surface. 102. The cutting edge chip 200 having the left blade 203 shown in FIG. 6 is also formed in a flat plate shape, the left blade 203 is formed on the peripheral edge of the upper surface that becomes the rake face 201, and the side surface extending from the left blade 203 to the lower surface is a flank. 202. When assembled in the chip mounting grooves 10 and 20, each of the cutting edge chips 100 and 200 has side surfaces 100b and 200b that are in contact with and supported by the bottom wall surfaces 10b and 20b of the chip mounting groove, corresponding to the bottom wall surfaces 10b and 20b. The tool tip 1 is formed so as to gradually approach the end face side of the tool body 1 to which the cutting blade tips 100 and 200 deviate as it crosses the axis of the tool body 1 and goes radially inward of the tool body.

以上の構成を有するロータ歯切りカッタは、チップ取付溝の底壁面１０ｂ、２０ｂが、工具本体１の軸線に斜交しかつ工具本体１の径方向内側に向かうにつれ該チップ取付溝に組込まれる切刃チップ１００、２００の偏倚する工具本体１の端面側に漸次接近するように形成され、さらに、楔部材挿入溝もその底壁面１１ｂ、２１ｂが前記底壁面１０ｂ、２０ｂと略平行に延びるように形成されていることから、前記チップ取付溝１０、２０が工具本体１の軸線に沿って工具本体１を貫通する従来の転削工具にくらべ、工具本体１の外周部における強度低下を防止することができる。そのうえ、チップ取付溝１０、２０および楔部材挿入溝１１、２１ともに工具本体１の外周側にのみ開口する構成となっているので、工具本体１の外周部の強度低下をさらに防止することができる。   The rotor gear cutting cutter having the above-described configuration is a cutting tool that is incorporated into the tip mounting groove as the bottom wall surface 10b, 20b of the tip mounting groove obliquely intersects the axis of the tool body 1 and goes radially inward of the tool body 1. The blade tips 100 and 200 are formed so as to gradually approach the end face side of the tool body 1 on which the deflection is made, and the wedge member insertion grooves also have bottom wall surfaces 11b and 21b extending substantially parallel to the bottom wall surfaces 10b and 20b. Since the tip mounting grooves 10 and 20 are formed, the strength of the outer peripheral portion of the tool body 1 is prevented from lowering compared to the conventional rolling tool in which the tool mounting groove 1 penetrates the tool body 1 along the axis of the tool body 1. Can do. In addition, since the tip mounting grooves 10 and 20 and the wedge member insertion grooves 11 and 21 are configured to open only on the outer peripheral side of the tool main body 1, it is possible to further prevent a decrease in strength of the outer peripheral portion of the tool main body 1. .

チップ取付溝１０、２０に組込まれたとき、各切刃チップ１００、２００は、チップ取付溝の底壁面１０ｂ、２０ｂに当接支持される側面が前記底壁面１０ｂ、２０ｂに対応して工具本体１の軸線に斜交しかつ前記径方向内側に向かうにつれ、該チップ取付溝に組込まれる切刃チップ１００、２００の偏倚する工具本体１の端面側に漸次接近するように形成されているので、チップ取付溝の底壁面に当接支持される側面が工具本体の軸線に沿って形成される従来転削工具にくらべ、切刃チップ１００、２００が大型化せず該切刃チップ１００、２００の成形コストおよび材料コストの高騰が防止される。特に、本実施形態のように右刃１０３と左刃２０３によって形成される切刃が工具本体の外周部における両端面より突出しており、前記両端面間距離よりも大きな刃幅を有する場合、従来工具では、各切刃チップ１００、２００の大型化による問題が避けられなかったが、本実施形態に係るロータ歯切りカッタでは、前記問題が大幅に改善される。   When assembled in the chip mounting grooves 10 and 20, each of the cutting edge chips 100 and 200 has a tool body whose side surface abutted and supported by the bottom wall surfaces 10b and 20b of the chip mounting groove corresponds to the bottom wall surfaces 10b and 20b. Since it is formed so as to gradually approach the end face side of the tool body 1 to which the cutting blade tips 100 and 200 incorporated in the tip mounting groove are inclined as it is obliquely crossed with the axis of 1 and goes inward in the radial direction, Compared to the conventional rolling tool in which the side surface abutting and supported on the bottom wall surface of the chip mounting groove is formed along the axis of the tool body, the cutting edge chips 100 and 200 are not enlarged and the cutting edge chips 100 and 200 are not enlarged. An increase in molding cost and material cost is prevented. In particular, when the cutting blade formed by the right blade 103 and the left blade 203 protrudes from both end faces in the outer peripheral portion of the tool body as in the present embodiment and has a blade width larger than the distance between the both end faces, In the tool, a problem due to an increase in the size of each of the cutting edge tips 100 and 200 is inevitable, but the problem is greatly improved in the rotor gear cutting cutter according to the present embodiment.

さらに、工具本体１の外周面からチップ取付溝の底壁面１０ｂ、２０ｂまでの深さが従来の転削工具にくらべ浅くなるので、該チップ取付溝１０、２０の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化といった問題が解消する。チップ取付溝１０、２０に略平行な方向に延設される楔部材挿入溝１１、２１についても底壁面１０ｂ、２０ｂまでの深さが浅くなるので、前記効果がさらに顕著となる。   Furthermore, since the depth from the outer peripheral surface of the tool body 1 to the bottom wall surface 10b, 20b of the chip mounting groove is shallower than that of a conventional rolling tool, it is prevented that machining of the chip mounting groove 10, 20 becomes difficult. This eliminates problems such as high processing costs and deterioration of processing accuracy. The wedge member insertion grooves 11 and 21 extending in a direction substantially parallel to the chip attachment grooves 10 and 20 also have a shallower depth to the bottom wall surfaces 10b and 20b, so that the above-described effect becomes more remarkable.

各チップ取付溝の底壁面１０ｂ、２０ｂおよび楔挿入溝の底壁面１１ｂ、２１ｂと工具本体１の軸線とのなす角度α、βは、３０°〜６０°の範囲とされるのが望ましい。これは、チップ取付溝１０、２０および楔部材挿入溝１１、２１が工具本体１の軸線方向で該工具本体１を貫通することが避けられるため、該工具本体１の外周部における強度低下を防止することができるからである。しかも、工具本体１の外周面からチップ取付溝の底壁面１０ｂ、２０ｂまでの深さおよび前記外周面から楔部材挿入溝の底壁面１１ｂ、２１ｂまでの深さが深くなることを防止するので、該チップ取付溝１０、２０および楔部材挿入溝１１、２１の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化といった問題が解消する。チップ取付溝の底壁面１０ｂ、２０ｂおよび楔部材挿入溝の底壁面１１ｂ、２１ｂと工具本体１の軸線とのなす角度が３０°未満になると、チップ取付溝１０、２０および楔部材挿入溝１１、２１が深くなるため、これらチップ取付溝１０、２０および楔部材挿入溝１１、２１の機械加工が難しくなるのを防止し加工コストの高騰や加工精度の悪化を防止する効果が小さくなり、前記角度が６０°を超えると、チップ取付溝の底壁面１０ｂ、２０ｂに沿う方向の長さおよび楔部材挿入溝の底壁面１１ｂ、２１ｂに沿う方向の長さが長くなるため、工具本体１の外周部の強度低下を防止する効果が小さくなってしまう。   The angles α and β formed by the bottom wall surfaces 10b and 20b of each chip mounting groove and the bottom wall surfaces 11b and 21b of the wedge insertion groove and the axis of the tool body 1 are preferably in the range of 30 ° to 60 °. This prevents the tip mounting grooves 10 and 20 and the wedge member insertion grooves 11 and 21 from penetrating the tool body 1 in the axial direction of the tool body 1, thereby preventing a decrease in strength at the outer peripheral portion of the tool body 1. Because it can be done. Moreover, since the depth from the outer peripheral surface of the tool body 1 to the bottom wall surface 10b, 20b of the chip mounting groove and the depth from the outer peripheral surface to the bottom wall surface 11b, 21b of the wedge member insertion groove are prevented, Machining of the chip mounting grooves 10 and 20 and the wedge member insertion grooves 11 and 21 is prevented from becoming difficult, and problems such as an increase in processing cost and deterioration in processing accuracy are solved. When the angle formed between the bottom wall surface 10b, 20b of the chip mounting groove and the bottom wall surface 11b, 21b of the wedge member insertion groove and the axis of the tool body 1 is less than 30 °, the chip mounting groove 10, 20 and the wedge member insertion groove 11, 21 becomes deeper, the machining of the chip mounting grooves 10 and 20 and the wedge member insertion grooves 11 and 21 is prevented from becoming difficult, and the effect of preventing a rise in processing cost and deterioration in processing accuracy is reduced. If the angle exceeds 60 °, the length in the direction along the bottom wall surface 10b, 20b of the chip mounting groove and the length in the direction along the bottom wall surface 11b, 21b of the wedge member insertion groove are increased. The effect of preventing a decrease in strength is reduced.

図示しないが、本ロータ歯切りカッタにおいて、右刃１０３を有する切刃チップ１００又は左刃２０３を有する切刃チップ２００の少なくともいずれか一方と、該切刃チップが装着されるチップ取付溝の底壁面１０ｂ、２０ｂとの間に、シートが介在し皿ビス等のねじ部材により工具本体１に固定されてもよい。このような構成を有することにより、前記シートの厚さにて右刃１０３又は左刃２０３の少なくともいずれか一方の位置が調整される。例えば再研削した切刃チップや精度の低い切刃チップを装着する際、前記底壁面１０ｂ、２０ｂに直交する方向に切刃チップ１００、２００を移動させるだけなので、切刃の位置の調整がきわめて簡易になる。   Although not shown, in this rotor gear cutting cutter, at least one of the cutting edge chip 100 having the right blade 103 or the cutting edge chip 200 having the left blade 203 and the bottom of the chip mounting groove on which the cutting edge chip is mounted. A sheet may be interposed between the wall surfaces 10b and 20b and may be fixed to the tool body 1 by a screw member such as a countersunk screw. By having such a configuration, the position of at least one of the right blade 103 and the left blade 203 is adjusted by the thickness of the sheet. For example, when a re-ground cutting tip or a low-precision cutting tip is mounted, the cutting tips 100 and 200 are simply moved in a direction perpendicular to the bottom wall surfaces 10b and 20b. It becomes simple.

本発明は以上に説明した実施形態に限定されるものではなく、発明の要旨を逸脱しない範囲で種々に変形可能である。例えば、切刃チップをチップ取付溝に固定する方法は、楔部材によって固定する方法に限定されず、切刃チップに係合する皿ビス等のねじ部材によって締着する方法、押え金で切刃チップのすくい面をチップ取付溝の側壁面１０ａ、２０ａ側に向かって押圧固定する方法としてもかまわない。   The present invention is not limited to the embodiment described above, and various modifications can be made without departing from the scope of the invention. For example, the method of fixing the cutting edge tip to the tip mounting groove is not limited to the method of fixing by the wedge member, the method of fastening with a screw member such as a countersunk screw that engages the cutting edge tip, the cutting blade with a presser foot A method of pressing and fixing the rake face of the chip toward the side wall surfaces 10a and 20a of the chip mounting groove may be used.

本発明を適用したロータ歯切りカッタの正面図である。It is a front view of the rotor gear cutter which applied this invention. 図１に示すロータ歯切りカッタの平面図である。It is a top view of the rotor gear cutting cutter shown in FIG. 図１に示すロータ歯切りカッタの右側面図である。FIG. 3 is a right side view of the rotor gear cutter shown in FIG. 1. 図１に示すロータ歯切りカッタの切刃回転形状を説明する図である。It is a figure explaining the cutting blade rotation shape of the rotor gear cutting cutter shown in FIG. 右刃を有する切刃チップの斜視図である。It is a perspective view of the cutting-edge chip | tip which has a right blade. 左刃を有する切刃チップの斜視図である。It is a perspective view of the cutting-edge chip | tip which has a left blade.

符号の説明Explanation of symbols

１ 工具本体
１０、２０ チップ取付溝
１１、２１ 楔部材挿入溝
１０ｂ、２０ｂ チップ取付溝の底壁面
１００、２００ 切刃チップ
１００ｂ、２００ｂ チップ取付溝の底壁面に当接する切刃チップの側面
１０３ 右刃
２０３ 左刃 1 Tool body 10, 20 Tip attachment groove 11, 21 Wedge member insertion groove 10b, 20b Bottom wall surface 100, 200 of chip attachment groove Cutting edge tip 100b, 200b Side surface 103 of cutting edge tip contacting the bottom wall surface of chip attachment groove Right Blade 203 Left blade

Claims (3)

軸線まわりに回転させられる略円板状をなす工具本体の外周部分に備わるチップ取付溝内には、右刃を有する切刃チップが前記工具本体の一端面側に偏倚して配設されるとともに、左刃を有する切刃チップが前記工具本体の他端面側に配設されてなる転削工具であって、
前記右刃および前記左刃が前記軸線まわりの回転軌跡の一部を重複することにより前記軸線方向の刃幅にわたって連続した切刃が構成され、
前記切刃チップに当接するチップ取付溝の底壁面が、前記軸線に斜交しかつ前記工具本体の径方向内側に向かうにつれ前記切刃チップの偏倚する前記工具本体の端面側に漸次接近するように形成されている
ことを特徴とする転削工具。 A cutting blade tip having a right blade is disposed in a biased manner toward one end surface of the tool body in a chip mounting groove provided in the outer peripheral portion of the tool body having a substantially disk shape rotated around the axis. A cutting tool in which a cutting edge tip having a left blade is disposed on the other end surface side of the tool body,
The right blade and the left blade overlap a part of the rotation trajectory around the axis, thereby forming a continuous cutting blade over the blade width in the axial direction,
The bottom wall surface of the chip mounting groove that contacts the cutting edge tip gradually approaches the end face side of the tool body where the cutting edge chip is biased as it obliquely crosses the axis and moves inward in the radial direction of the tool body. A rolling tool characterized by being formed into 前記チップ取付溝の底壁面と前記軸線とのなす角度が３０°〜６０°の範囲とされている
ことを特徴とする請求項１に記載の転削工具。 The turning tool according to claim 1, wherein an angle formed by a bottom wall surface of the chip mounting groove and the axis is in a range of 30 ° to 60 °. 前記右切刃を有する切刃チップ又は前記左切刃を有する切刃チップの少なくともいずれか一方と、該切刃チップが装着されるチップ取付溝の底壁面との間にシートを介在させることにより前記右刃又は前記左刃の少なくともいずれか一方の位置が調整可能とされている
ことを特徴とする請求項１又は２に記載の転削工具。 By interposing a sheet between at least one of the cutting edge chip having the right cutting edge or the cutting edge chip having the left cutting edge and the bottom wall surface of the chip mounting groove on which the cutting edge chip is mounted The rolling tool according to claim 1 or 2, wherein the position of at least one of the right blade and the left blade is adjustable.
JP2007225324A 2007-08-31 2007-08-31 Rotary cutting tool Pending JP2009056535A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2007225324A JP2009056535A (en) 2007-08-31 2007-08-31 Rotary cutting tool

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2007225324A JP2009056535A (en) 2007-08-31 2007-08-31 Rotary cutting tool

Publications (1)

Publication Number Publication Date
JP2009056535A true JP2009056535A (en) 2009-03-19

Family

ID=40552762

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2007225324A Pending JP2009056535A (en) 2007-08-31 2007-08-31 Rotary cutting tool

Country Status (1)

Country Link
JP (1) JP2009056535A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160339530A1 (en) * 2015-05-22 2016-11-24 Caterpillar Inc. Double Tooth Gap Cutter and Associated Cutting Insert

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898126A (en) * 1981-12-03 1983-06-10 Ishikawajima Harima Heavy Ind Co Ltd Desulfurization of stack gas
JP2005014114A (en) * 2003-06-24 2005-01-20 Tungaloy Corp Rotary cutting tool having adjusting mechanism
JP2005066780A (en) * 2003-08-26 2005-03-17 Tungaloy Corp Throwaway type gear cutter

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5898126A (en) * 1981-12-03 1983-06-10 Ishikawajima Harima Heavy Ind Co Ltd Desulfurization of stack gas
JP2005014114A (en) * 2003-06-24 2005-01-20 Tungaloy Corp Rotary cutting tool having adjusting mechanism
JP2005066780A (en) * 2003-08-26 2005-03-17 Tungaloy Corp Throwaway type gear cutter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20160339530A1 (en) * 2015-05-22 2016-11-24 Caterpillar Inc. Double Tooth Gap Cutter and Associated Cutting Insert

Similar Documents

Publication Publication Date Title
JP5023628B2 (en) Roughing end mill
US9233426B2 (en) Octagonal cutting insert having edge portion with variable wedge angle, and cutting tool
RU2660427C2 (en) Gear cutter with radially adjustable square or rectangular stick blades
WO2013150958A1 (en) Radial foil bearing
KR100796970B1 (en) Cutting tool and parts therefor, as well as a method for the manufacture of such a cutting tool
RU2650365C2 (en) Gear cutter with radial adjustability of stick blades
JP2008279547A (en) Groove working method and formed rotary cutting tool
US8905682B2 (en) Multi-edge cutting head and an insert used therein
KR20020020636A (en) Slot-drilling cutter
JP2014087873A (en) Two-blade double margin drill
JP2011525152A (en) Drill
JP2017113839A (en) Cutting insert and cutting tool
JP6560566B2 (en) Cutting insert and gear milling cutter
JP3953068B2 (en) Throw-away ball end mill
JP2014231115A (en) End mill
JP2009056535A (en) Rotary cutting tool
KR20130132910A (en) Cutting insert having structured tool flanks
US7281885B2 (en) High-speed milling cutter
JP3674916B2 (en) Cutting tools
EP3153268B1 (en) Sectional hob
JP4652187B2 (en) Rotary cutting tool
KR102352714B1 (en) Cutting cutter for tip dressing
JPS6362606A (en) Milling machine
JP2015037814A (en) Rotary cutting tool for tooth cutting
JP5814580B2 (en) Cutting cutter for chip dress

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20100615

A871 Explanation of circumstances concerning accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A871

Effective date: 20110930

A975 Report on accelerated examination

Free format text: JAPANESE INTERMEDIATE CODE: A971005

Effective date: 20111011

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20111122

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20120113

A02 Decision of refusal

Free format text: JAPANESE INTERMEDIATE CODE: A02

Effective date: 20120131