JP3194648U - Rotation induction holder - Google Patents

Rotation induction holder Download PDF

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JP3194648U
JP3194648U JP2014005010U JP2014005010U JP3194648U JP 3194648 U JP3194648 U JP 3194648U JP 2014005010 U JP2014005010 U JP 2014005010U JP 2014005010 U JP2014005010 U JP 2014005010U JP 3194648 U JP3194648 U JP 3194648U
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holder
tip member
roller
annular
holder tip
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了介 礒濱
了介 礒濱
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株式会社日研工作所
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Abstract

【課題】主軸の回転を利用して工具を高速で往復運動させる工具ホルダを提供する。【解決手段】回転誘導ホルダ(10)は、工作機械の主軸(101)に装着されるシャンク部(12)を後端側に有するホルダ本体(11)と、ホルダ本体に軸方向進退動可能に取り付けられて工具(113)を保持する工具保持部(22)を有するホルダ先端部材(21)と、ホルダ先端部材(21)の外径側に配置されて外方から回り止めされる固定部材(41)と、ホルダ先端部材および固定部材間に介在してホルダ先端部材の回転運動を利用してホルダ先端部材を軸(O)方向に往復運動させる往復運動誘導機構(31)とを備える。【選択図】図1A tool holder for reciprocating a tool at high speed using rotation of a spindle is provided. A rotation guide holder (10) includes a holder main body (11) having a shank portion (12) attached to a main spindle (101) of a machine tool on a rear end side, and is capable of moving forward and backward in the axial direction of the holder main body. A holder tip member (21) having a tool holding portion (22) that is attached and holds the tool (113), and a fixing member that is disposed on the outer diameter side of the holder tip member (21) and is prevented from rotating from the outside. 41) and a reciprocating motion inducing mechanism (31) interposed between the holder front end member and the fixed member to reciprocate the holder front end member in the axis (O) direction by utilizing the rotational motion of the holder front end member. [Selection] Figure 1

Description

本考案は、工具を往復運動(オシレーション)させることができる工具ホルダに関する。   The present invention relates to a tool holder capable of reciprocating (oscillating) a tool.

切削加工したワークの表面を、バフ、砥石等の工具で磨きや研磨することが一般的に行われている。かかる加工に関する技術としては従来、例えば、特開2005−279903号公報(特許文献1)に記載の内面研削盤が知られている。特許文献1に記載の内面研削盤は、砥石軸を有する砥石軸モータと、砥石軸モータを軸方向に往復運動させるオシレーションモータを備える。オシレーションモータは、砥石を含めた砥石軸モータ全体を軸方向に往復運動させる。   In general, the surface of a cut workpiece is polished or polished with a tool such as a buff or a grindstone. Conventionally, for example, an internal grinding machine described in JP-A-2005-279903 (Patent Document 1) is known as a technique related to such processing. The internal grinding machine described in Patent Literature 1 includes a grinding wheel shaft motor having a grinding wheel shaft and an oscillation motor that reciprocates the grinding wheel shaft motor in the axial direction. The oscillation motor reciprocates the entire grinding wheel shaft motor including the grinding wheel in the axial direction.

特開2005−279903号公報JP 2005-279903 A

ところで磨きや研削加工に先立つ切削加工を、XYZ軸方向に動作可能な主軸を有するマシニングセンタ等の工作機械で行う場合、後工程になる磨きや研削加工も同じマシニングセンタを用いて済ますことが好都合である。工具ホルダに磨きや研削工具をチャックし、この工具ホルダをマシニングセンタの主軸に装着し、主軸をZ軸方向(軸方向)に動かして、ワークを研削加工する場合、マシニングセンタの性能上、主軸自身のZ軸方向の往復速度は最高で毎分120回程度であった。このように主軸自身の往復運動は緩慢であり、主軸を往復させて磨きや研削加工することは非効率であった。   By the way, when the cutting process prior to polishing or grinding is performed with a machine tool such as a machining center having a spindle that can move in the XYZ axis direction, it is convenient to use the same machining center for polishing and grinding that will be performed later. . If a tool holder is chucked with a polishing or grinding tool, this tool holder is mounted on the spindle of the machining center, and the workpiece is ground by moving the spindle in the Z-axis direction (axial direction), the spindle itself will The maximum reciprocating speed in the Z-axis direction was about 120 times per minute. Thus, the reciprocating motion of the spindle itself is slow, and it is inefficient to polish and grind the spindle by reciprocating.

本考案は、上述の実情に鑑み、マシニングセンタの主軸を使用しながらも、工具を高速で往復運動(オシレーション)させることができる工具ホルダを提供する。   The present invention provides a tool holder capable of reciprocating (oscillating) a tool at high speed while using the spindle of a machining center in view of the above situation.

この目的のため本考案による回転誘導ホルダは、工作機械の主軸に装着されるシャンク部を後端側に有するホルダ本体と、ホルダ本体に軸方向進退動可能に取り付けられる部品であって工具を保持する工具保持部を有するホルダ先端部材と、ホルダ先端部材の外径側に配置されて外方から回り止めされる固定部材と、ホルダ先端部材および固定部材間に介在する機構であってホルダ先端部材の回転運動を利用してホルダ先端部材を軸方向に往復運動させる往復運動誘導機構とを備える。   For this purpose, the rotation induction holder according to the present invention is a holder main body having a shank portion mounted on the main shaft of a machine tool on the rear end side, and a component that is attached to the holder main body so as to be movable back and forth in the axial direction and holds the tool. A holder tip member having a tool holding portion, a fixing member disposed on the outer diameter side of the holder tip member and prevented from rotating from the outside, and a mechanism interposed between the holder tip member and the fixing member, the holder tip member And a reciprocating motion guiding mechanism for reciprocating the holder tip member in the axial direction using the rotational motion of the holder.

かかる本考案によれば、ホルダ先端部材および固定部材間に介在する往復運動誘導機構がホルダ先端部材の回転運動を利用してホルダ先端部材を軸方向に往復運動させる。したがって主軸の回転数に応じて往復運動の速度を向上させることができる。主軸の回転数はプログラムで自由に指定できるから、本考案によれば少なくとも主軸の回転数以上の往復運動が可能である。往復運動誘導機構として例えば、回転運動を往復運動に変換するカム機構が挙げられる。   According to the present invention, the reciprocating motion guiding mechanism interposed between the holder front end member and the fixed member reciprocates the holder front end member in the axial direction using the rotational motion of the holder front end member. Therefore, the speed of the reciprocating motion can be improved according to the rotational speed of the main shaft. Since the rotational speed of the main shaft can be freely specified by a program, according to the present invention, reciprocating motion at least higher than the rotational speed of the main shaft is possible. An example of the reciprocating motion induction mechanism is a cam mechanism that converts rotational motion into reciprocating motion.

カム機構の構造は特に限定されないが、本考案の一実施形態として往復運動誘導機構は、ホルダ先端部材が通される中央孔、およびホルダ先端部材と軸方向に対面する環状カム面を有し、固定部材に支持される環状部材を含む。またホルダ先端部材は、回転可能に支持されて環状カム面を転走するローラを含む。またホルダ本体およびホルダ先端部材間には、ローラを環状カム面に接触させるように付勢する弾性部材が設けられる。そして環状カム面は、全周に亘って軸方向の高低差を有するとよい。   Although the structure of the cam mechanism is not particularly limited, the reciprocating motion induction mechanism as one embodiment of the present invention has a central hole through which the holder tip member is passed, and an annular cam surface that faces the holder tip member in the axial direction, An annular member supported by the fixing member is included. The holder tip member includes a roller that is rotatably supported and rolls on the annular cam surface. An elastic member is provided between the holder main body and the holder tip member to urge the roller so as to contact the annular cam surface. The annular cam surface may have a height difference in the axial direction over the entire circumference.

かかる実施形態によればホルダ先端部材が、環状カム面の高低差に沿って軸方向に往復運動する。したがって主軸の回転数に応じて往復運動の速度を向上させることができる。またホルダ先端部材がローラを含むことから、主軸が回転する際のトルクロスが少ない。あるいは往復運動誘導機構の他の実施形態として例えば、環状の固定部材にホルダ先端部材を挿通し、互いに対面する固定部材の内周面およびホルダ先端部材の外周面のいずれか一方に突起を設け、残る他方に軸方向に高くなったり低くなったりして周方向に延びる蛇行溝を形成し、ホルダ先端部材の回転により突起が蛇行溝に案内されて軸方向先端側および後端側に交互に移動する案内構造が挙げられる。   According to this embodiment, the holder tip member reciprocates in the axial direction along the height difference of the annular cam surface. Therefore, the speed of the reciprocating motion can be improved according to the rotational speed of the main shaft. Further, since the holder tip member includes a roller, there is little torcross when the main shaft rotates. Alternatively, as another embodiment of the reciprocating motion induction mechanism, for example, the holder tip member is inserted into an annular fixing member, and a protrusion is provided on one of the inner peripheral surface of the fixing member and the outer peripheral surface of the holder tip member facing each other, On the other side, a meandering groove extending in the circumferential direction is formed which increases or decreases in the axial direction, and the protrusion is guided to the meandering groove by the rotation of the holder tip member, and alternately moves to the front end side and the rear end side in the axial direction. The guide structure to do is mentioned.

環状カム面の周方向に沿って移動するローラは、軸方向に高くなったり低くなったりして移動する。この移動の軌跡は特に限定されないが、円弧状の軌跡を描くことにより、ホルダ先端部材を滑らかに往復運動させることができる。本考案の好ましい実施形態として、ホルダ先端部材は、根元側がホルダ先端部材の基部に螺合するとともに先端側がローラを軸支するローラ軸をさらに含む。そしてローラ軸の根元側外周に形成される雄ねじは、ローラの回転方向とは逆転方向を緩め方向とする雄ねじである。かかる実施形態によれば、ローラ軸が緩み止めされることから、長期間の使用後であってもローラ軸がホルダ先端部材から脱落することがない。   The roller that moves along the circumferential direction of the annular cam surface moves in a manner that increases or decreases in the axial direction. The trajectory of this movement is not particularly limited, but the holder tip member can be smoothly reciprocated by drawing an arc-shaped trajectory. As a preferred embodiment of the present invention, the holder tip member further includes a roller shaft whose root side is screwed into the base of the holder tip member and whose tip side pivots the roller. And the external thread formed in the base side outer periphery of a roller axis | shaft is an external thread which makes a rotation direction reverse to a rotation direction of a roller a loosening direction. According to this embodiment, since the roller shaft is prevented from loosening, the roller shaft does not fall off the holder tip member even after long-term use.

本考案の好ましい実施形態として、環状カム面は、周方向に所定の位相で高低差を有する。かかる実施形態によれば、安定した速度でホルダ先端部材を往復運動させることができる。例えば360°の位相で1周期の高低差を設けることによって、主軸が1回転する毎にホルダ先端部材を軸方向に1往復させることができる。あるいは360°の位相で2周期の高低差を設けることによって、主軸が1回転する毎にホルダ先端部材を軸方向に2往復させることができる。この場合、主軸の回転数が毎分200回転とすれば、往復運動は毎分400回である。   As a preferred embodiment of the present invention, the annular cam surface has a height difference at a predetermined phase in the circumferential direction. According to this embodiment, the holder tip member can be reciprocated at a stable speed. For example, by providing a height difference of one cycle with a phase of 360 °, the holder tip member can be reciprocated once in the axial direction every time the main shaft makes one rotation. Alternatively, by providing a height difference of two periods with a phase of 360 °, the holder tip member can be reciprocated twice in the axial direction every time the main shaft makes one revolution. In this case, if the rotation speed of the main shaft is 200 revolutions per minute, the reciprocating motion is 400 revolutions per minute.

本考案のさらに好ましい実施形態としてローラは、ホルダ先端部材の周方向に間隔を空けて複数配設される。かかる実施形態によれば、環状カム面の高低差をホルダ先端部材に安定して伝えることができる。   As a further preferred embodiment of the present invention, a plurality of rollers are arranged at intervals in the circumferential direction of the holder tip member. According to this embodiment, the height difference of the annular cam surface can be stably transmitted to the holder tip member.

ホルダ先端部材に回転自在に支持されるローラは、例えばローラ軸によって片持ち支持される。この場合、環状カム面からローラに作用する力によってローラ軸に曲げモーメントが作用する。このためローラ軸に曲げ負担が生じる。そこで本考案の好ましい実施形態としてホルダ先端部材は、ローラを挟んで環状カム面と向き合う環状の間座と、間座を回転自在に支持するスラストベアリングをさらに含む。かかる実施形態によれば、環状カム面からローラに作用する力を間座が受け持つことから、ローラ軸に曲げモーメントが作用せず、ローラ軸に曲げ負担が生じ難い。   The roller rotatably supported by the holder tip member is cantilevered by, for example, a roller shaft. In this case, a bending moment acts on the roller shaft by the force acting on the roller from the annular cam surface. For this reason, a bending burden arises on the roller shaft. Therefore, as a preferred embodiment of the present invention, the holder tip member further includes an annular spacer facing the annular cam surface across the roller, and a thrust bearing that rotatably supports the spacer. According to this embodiment, since the spacer receives a force acting on the roller from the annular cam surface, a bending moment does not act on the roller shaft, and a bending load is hardly generated on the roller shaft.

固定部材は主軸と一体回転しなければよく、固定部材の形状は特に限定されない。本考案の一実施形態として、固定部材は、ホルダ本体の外周を包囲する環状支持体と、環状支持体の内周面およびホルダ本体の外周面間に設けられるベアリングを含む。かかる実施形態によれば固定部材の環状支持体を、ベアリングを介してホルダ本体に安定して支持することができる。非回転の環状支持体の内周面に設けられるベアリングの構造は特に限定されないが、高速で回転するホルダ本体との回転差を考慮して、転がり軸受、特にラジアルベアリングであることが望ましい。   The fixing member only needs to rotate integrally with the main shaft, and the shape of the fixing member is not particularly limited. As one embodiment of the present invention, the fixing member includes an annular support that surrounds the outer periphery of the holder body, and a bearing provided between the inner peripheral surface of the annular support and the outer peripheral surface of the holder body. According to this embodiment, the annular support body of the fixing member can be stably supported on the holder body via the bearing. The structure of the bearing provided on the inner peripheral surface of the non-rotating annular support is not particularly limited, but is preferably a rolling bearing, particularly a radial bearing, in consideration of a rotational difference from the holder body that rotates at high speed.

固定部材の回り止め手段は特に限定されないが、本考案の好ましい実施形態として固定部材は、工作機械の非回転部分と連結するための連結部をさらに含む。かかる実施形態によれば既存の部位を利用して固定部材を容易に回り止めすることができる。工作機械の非回転部は例えば、位置決めブロックであったり、切削液を供給するポートである。また固定部材の連結部は例えば、工作機械の非回転部に嵌合する位置決めピン等の突出部である。   Although the detent means of the fixing member is not particularly limited, as a preferred embodiment of the present invention, the fixing member further includes a connecting portion for connecting to a non-rotating portion of the machine tool. According to this embodiment, the fixing member can be easily prevented from rotating using an existing part. The non-rotating part of the machine tool is, for example, a positioning block or a port for supplying a cutting fluid. Moreover, the connection part of a fixing member is protrusions, such as a positioning pin fitted to the non-rotating part of a machine tool, for example.

このように本考案によれば、主軸の先端に磨きや研削工具を装着してワークを磨きや研削する場合であっても、主軸そのものをZ軸方向に往復させる必要がなく、主軸の回転運動を利用して磨きや研削工具を軸方向に往復させることから、往復運動の速度が向上する。本考案によればマシニングセンタを用いてワークの切削加工から磨きや研削加工まで一貫して効率よく実行可能である。   As described above, according to the present invention, even when a polishing or grinding tool is attached to the tip of the spindle to polish or grind the workpiece, the spindle itself does not need to reciprocate in the Z-axis direction, and the spindle rotates. Since the polishing and grinding tools are reciprocated in the axial direction using, the speed of reciprocation is improved. According to the present invention, the machining center can be used consistently and efficiently from cutting to polishing and grinding.

本考案の一実施形態になる回転誘導ホルダを示す縦断面図である。It is a longitudinal cross-sectional view which shows the rotation induction holder which becomes one Embodiment of this invention. 往復運動を誘導する誘導用カム部を示す展開図である。It is an expanded view which shows the cam part for guidance which guides reciprocation.

以下、本考案の実施の形態を、図面に基づき詳細に説明する。図1は、本考案の一実施形態になる回転誘導ホルダを示す縦断面図である。図2は、往復運動を誘導する誘導用カム部を、周方向360°に連続する断面で切断し、この切断面を平面に展開した展開図である。また図2には、考案の理解を容易にするためローラの転がり移動も示す。本考案の回転誘導ホルダ10は、ホルダ本体11と、ホルダ先端部材21と、往復運動誘導機構31を基本的に備える。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a rotation guide holder according to an embodiment of the present invention. FIG. 2 is a developed view in which the guiding cam portion for guiding the reciprocating motion is cut in a cross section continuous in the circumferential direction 360 °, and the cut surface is developed in a plane. FIG. 2 also shows the rolling movement of the rollers to facilitate understanding of the device. The rotation guide holder 10 of the present invention basically includes a holder body 11, a holder tip member 21, and a reciprocating motion guide mechanism 31.

ホルダ本体11の後端領域にはシャンク部12が形成される。シャンク部12は、マシニングセンタ(工作機械)の主軸101に装着される。ホルダ本体11は、回転誘導ホルダ10および主軸101の軸線Oに沿って延びる。ホルダ本体11の先端側には、ホルダ先端部材21が軸線O方向に進退動可能に取り付けられる。なおホルダ先端部材21がホルダ本体11と共回りするよう、両者の間にはキー13が介在する。キー13はホルダ先端部材21およびホルダ本体11のいずれか一方に設けられ、残る他方に形成されるキー溝16に沿って軸線O方向に摺動する。   A shank portion 12 is formed in the rear end region of the holder body 11. The shank portion 12 is attached to a spindle 101 of a machining center (machine tool). The holder main body 11 extends along the axis O of the rotation guide holder 10 and the main shaft 101. A holder front end member 21 is attached to the front end side of the holder main body 11 so as to be movable back and forth in the direction of the axis O. A key 13 is interposed between the holder tip member 21 and the holder main body 11 so as to rotate together. The key 13 is provided on one of the holder tip member 21 and the holder main body 11, and slides in the direction of the axis O along the key groove 16 formed on the other remaining.

ホルダ先端部材21は、軸線Oに沿って延び、ホルダ先端部材21の先端部には、ブラシ等のバリ取り工具113、あるいはバフ等の磨き工具、あるいは砥石といった研削工具の柄部を保持する工具保持部22が設けられる。   The holder tip member 21 extends along the axis O, and a tool that holds a handle portion of a deburring tool 113 such as a brush, a polishing tool such as a buff, or a grinding tool such as a grindstone at the tip of the holder tip member 21. A holding unit 22 is provided.

往復運動誘導機構31は、誘導用カム部32を有し、非回転の固定部材41と軸線O回りに回転するホルダ先端部材21との間に介在する。誘導用カム部32は、中央孔34および環状カム面36を有する環状部材である。誘導用カム部32の中央孔34にはホルダ先端部材21が通される。環状カム面36は後端側に指向する。ホルダ先端部材21の外径側に設けられる誘導用カム部32は、環状カム面36で、ホルダ先端部材21に含まれるローラ25と軸線O方向に接触する。なおホルダ本体11とホルダ先端部材21との間には、例えばコイルスプリング等の弾性部材14が縮設されており、ホルダ先端部材21に設けられたローラ25は弾性部材14によって往復運動誘導機構31の誘導用カム部32に常時接触するよう付勢される。   The reciprocating motion guiding mechanism 31 has a guiding cam portion 32 and is interposed between a non-rotating fixed member 41 and a holder tip member 21 that rotates about an axis O. The guide cam portion 32 is an annular member having a central hole 34 and an annular cam surface 36. The holder tip member 21 is passed through the central hole 34 of the guide cam portion 32. The annular cam surface 36 is directed toward the rear end side. The guide cam portion 32 provided on the outer diameter side of the holder tip member 21 is an annular cam surface 36 and contacts the roller 25 included in the holder tip member 21 in the direction of the axis O. An elastic member 14 such as a coil spring is contracted between the holder main body 11 and the holder tip member 21, and the roller 25 provided on the holder tip member 21 is reciprocated by the elastic member 14. It is urged | biased so that it may always contact to the cam part 32 for this.

固定部材41は軸線O方向に延び、固定部材41の後端部は図示しない工作機械の非回転部分に連結固定されて、主軸101ととともに工作機械のXYZ軸方向に移動する。したがって主軸101と固定部材41の位置関係は一定に保持される。   The fixing member 41 extends in the direction of the axis O, the rear end portion of the fixing member 41 is connected and fixed to a non-rotating portion of the machine tool (not shown), and moves together with the main shaft 101 in the XYZ axis direction of the machine tool. Therefore, the positional relationship between the main shaft 101 and the fixing member 41 is kept constant.

誘導用カム部32は、非回転の固定部材41に支持固定され、誘導用カム部32自身は回転しない。ローラ25は軸線Oを中心として周方向に間隔を空けて複数配列される。本実施形態のローラ25は180°等間隔に2個設けられる。ローラ25はホルダ先端部材21に支持され、環状カム面36に接触した状態を保持しながら軸線O回りに公転する。   The guiding cam portion 32 is supported and fixed to the non-rotating fixing member 41, and the guiding cam portion 32 itself does not rotate. A plurality of rollers 25 are arranged at intervals in the circumferential direction around the axis O. Two rollers 25 of this embodiment are provided at equal intervals of 180 °. The roller 25 is supported by the holder tip member 21 and revolves around the axis O while maintaining a state in contact with the annular cam surface 36.

環状カム面36は、図2に示すように周方向に亘って所定の位相で高低差Dを有する。ここでいう高低差とは軸線O方向の位置の差をいう。具体的には180°周期で、先端方向に高くなったり、後端方向に低くなったりする傾斜面を構成する。この傾斜面は周方向に連続する円弧状のカム曲面である。ローラ25は環状カム面36上を細矢印のように転がりながら太矢印のように移動する。かかる転走時において、ローラ25はカム曲面と同じく円弧状の移動軌跡を描く。ここで附言するとローラ25は180°間隔で配置され、環状カム面36は180°の位相を有するため、図2に実線ないし仮想線で示すようにすべてのローラ25が同じ高さで安定して環状カム面36に接触する。   As shown in FIG. 2, the annular cam surface 36 has a height difference D at a predetermined phase in the circumferential direction. The height difference here means a difference in position in the direction of the axis O. Specifically, an inclined surface is formed that becomes higher in the front end direction and lower in the rear end direction at a cycle of 180 °. This inclined surface is an arcuate cam curved surface that is continuous in the circumferential direction. The roller 25 moves on the annular cam surface 36 as indicated by a thick arrow while rolling as indicated by a thin arrow. At the time of such rolling, the roller 25 draws an arc-shaped movement locus like the cam curved surface. In addition, since the rollers 25 are arranged at intervals of 180 ° and the annular cam surface 36 has a phase of 180 °, all the rollers 25 are stabilized at the same height as shown by a solid line or an imaginary line in FIG. In contact with the annular cam surface 36.

次に本考案の回転誘導ホルダの作用につき説明する。   Next, the operation of the rotation induction holder of the present invention will be described.

主軸101の回転に伴ってホルダ本体11およびホルダ先端部材21が回転すると、ホルダ先端部材21のローラ25が、非回転の環状カム面36に沿って、軸線O回りに公転する。そうするとローラ25は環状カム面36の高低差Dの範囲で軸線O方向に往復運動する。   When the holder main body 11 and the holder tip member 21 rotate as the main shaft 101 rotates, the roller 25 of the holder tip member 21 revolves around the axis O along the non-rotating annular cam surface 36. Then, the roller 25 reciprocates in the direction of the axis O within the range of the height difference D of the annular cam surface 36.

本実施形態によれば主軸101の回転速度が毎分200回転の場合、ホルダ先端部材21の往復回数は毎分400回になる。したがって主軸101をZ軸方向(図1中の軸線O方向)に往復移動させる場合と比較して、バリ取り工具113を高速で往復運動させることができる。   According to the present embodiment, when the rotational speed of the main shaft 101 is 200 revolutions per minute, the number of reciprocations of the holder tip member 21 is 400 times per minute. Therefore, the deburring tool 113 can be reciprocated at a higher speed than when the main shaft 101 is reciprocated in the Z-axis direction (axis O direction in FIG. 1).

ホルダ先端部材21の先端部に形成される工具保持部22は円筒形状であり、先端開口の工具保持孔22hを中央に有する。軸線O方向に沿って延びる工具保持孔22hには、バリ取り工具113の柄部112が挿入され、側方からサイドロックボルト29で固定される。バリ取り工具113の先端領域は例えば、柄部112から直線状に連続する軸部に植毛されて、各毛が半径方向に延びる円柱形状のブラシである。   The tool holding portion 22 formed at the tip portion of the holder tip member 21 has a cylindrical shape and has a tool holding hole 22h having a tip opening at the center. The handle portion 112 of the deburring tool 113 is inserted into the tool holding hole 22h extending along the axis O direction, and is fixed by the side lock bolt 29 from the side. The tip region of the deburring tool 113 is, for example, a cylindrical brush that is planted on a shaft portion that is linearly continuous from the handle portion 112 and each bristle extends in the radial direction.

ホルダ先端部材21の後端部は、ホルダ本体11の先端部に形成された先端開口の先端筒状部15の中に収容および支持される。先端筒状部15の孔奥には弾性部材14が縮設され、弾性部材14はホルダ先端部材21を前方(先端方向)へ付勢する。   The rear end portion of the holder front end member 21 is accommodated and supported in a front end cylindrical portion 15 of a front end opening formed at the front end portion of the holder main body 11. The elastic member 14 is contracted in the depth of the hole of the distal end cylindrical portion 15, and the elastic member 14 biases the holder distal end member 21 forward (front end direction).

ローラ25は、ローラ軸27の先端部に回転自在に片持ち支持される。ローラ25を円筒形状とし、ローラ25の内周面とローラ軸27の外周面との間に複数の針状ころ(図示せず)を転動体として配置するとよい。これによりローラ25の円滑な回転を実現する。またローラ25の外径寸法を、ローラ25の軸寸法よりも大きくするとよい。これにより軸線Oを中心とするローラ25の両端の回転差を少なくして、ローラ25の偏摩耗を軽減することができる。ローラ軸27は軸線Oと直角となるよう、ホルダ先端部材21の半径方向に延びる。ローラ軸27の根元部は、ホルダ先端部材21の外周面に穿設された雌ねじ孔に螺合によって固定される。ローラ25は、周方向に180°の間隔を空けて2個配置され、環状カム面36を転走する。ローラ軸27の根元部はホルダ先端部材21の基部に立設される。具体的には、ローラ軸27の根元部外周に雄ねじが形成され、ホルダ先端部材21の外周面には半径方向に延びる雌ねじ孔が形成され、雄ねじが雌ねじに螺合する。なおこれらの雄ねじおよび雌ねじは、ローラ軸27の回転方向と逆方向を緩め方向とする。これによりローラ軸27の緩みを防止される。   The roller 25 is cantilevered at the tip of the roller shaft 27 so as to be rotatable. The roller 25 may have a cylindrical shape, and a plurality of needle rollers (not shown) may be disposed as rolling elements between the inner peripheral surface of the roller 25 and the outer peripheral surface of the roller shaft 27. Thereby, smooth rotation of the roller 25 is realized. The outer diameter of the roller 25 may be larger than the axial dimension of the roller 25. As a result, the rotational difference between both ends of the roller 25 around the axis O can be reduced, and uneven wear of the roller 25 can be reduced. The roller shaft 27 extends in the radial direction of the holder tip member 21 so as to be perpendicular to the axis O. The root portion of the roller shaft 27 is fixed by screwing into a female screw hole formed in the outer peripheral surface of the holder tip member 21. Two rollers 25 are arranged at an interval of 180 ° in the circumferential direction, and roll on the annular cam surface 36. The base portion of the roller shaft 27 is erected on the base portion of the holder tip member 21. Specifically, a male screw is formed on the outer periphery of the root portion of the roller shaft 27, a female screw hole extending in the radial direction is formed on the outer peripheral surface of the holder tip member 21, and the male screw is screwed to the female screw. The male screw and female screw have a loosening direction opposite to the rotation direction of the roller shaft 27. This prevents the roller shaft 27 from loosening.

ホルダ先端部材21には、環状カム面36と対向する間座24と、間座24を回転自在に支持するスラストベアリング26がさらに設けられる。間座24は環状体であり、間座24の中心孔にはホルダ先端部材21の軸方向中央部が通される。間座24の両端面は平坦に形成され、このうち間座24の先端面はローラ25と転がり接触する。また間座24の後端面はスラストベアリング26によって回転自在に支持される。   The holder tip member 21 is further provided with a spacer 24 that faces the annular cam surface 36 and a thrust bearing 26 that rotatably supports the spacer 24. The spacer 24 is an annular body, and the central portion of the holder tip member 21 is passed through the center hole of the spacer 24. Both end surfaces of the spacer 24 are formed flat, and the tip surface of the spacer 24 is in rolling contact with the roller 25. The rear end surface of the spacer 24 is rotatably supported by a thrust bearing 26.

ホルダ先端部材21の軸方向中央部は、後端側が大径に先端側が小径に形成されて環状段差28を構成する。先端側に指向する環状段差28はスラストベアリング26を軸線O方向に支持する。スラストベアリング26は複数の転動体を含む転がり軸受であって間座24の後端面を回転自在に支持するとともに、ローラ25側から付与される軸線O方向の力を受け止める。これにより、ローラ25を片持ち支持するローラ軸27に曲げモーメントが作用することを軽減する。   The central part of the holder tip member 21 in the axial direction forms an annular step 28 with the rear end side having a large diameter and the tip side having a small diameter. An annular step 28 directed toward the tip side supports the thrust bearing 26 in the direction of the axis O. The thrust bearing 26 is a rolling bearing including a plurality of rolling elements, and rotatably supports the rear end surface of the spacer 24 and receives a force in the direction of the axis O applied from the roller 25 side. As a result, the bending moment acting on the roller shaft 27 that cantilever-supports the roller 25 is reduced.

環状カム面36を有する環状部材である誘導用カム部32は、円筒形状の固定支持体33に収容されるとともに、固定支持体33の先端に設けられた内向きフランジ部35によって先端側に抜け止めされる。固定支持体33は往復運動誘導機構31に含まれ、固定支持体33の後端面は、環状支持体43の先端に連結固定される。環状支持体43は軸線Oに沿って延び、環状支持体43の中央孔にホルダ本体11の先端筒状部15が通される。環状支持体43は固定部材41に含まれる。   The guide cam portion 32, which is an annular member having an annular cam surface 36, is accommodated in a cylindrical fixed support 33 and is pulled out to the front end side by an inward flange portion 35 provided at the front end of the fixed support 33. Stopped. The fixed support 33 is included in the reciprocating motion guiding mechanism 31, and the rear end surface of the fixed support 33 is connected and fixed to the tip of the annular support 43. The annular support 43 extends along the axis O, and the tip cylindrical portion 15 of the holder body 11 is passed through the central hole of the annular support 43. The annular support 43 is included in the fixing member 41.

環状支持体43の内周面と先端筒状部15の外周面との間にはベアリング45,46が設けられる。ベアリング45,46は複数の転動体を含む転がり軸受(ラジアルベアリング)であって、環状支持体43の両端部にそれぞれ配置され、ホルダ本体11を回転自在に支持する。環状支持体43の外周面には回り止め部47が附設される。回り止め部47は、軸線Oと平行に延びる管状部材であり、固定部材41に含まれる。回り止め部47の後端部は、マシニングセンタに固定された位置決めブロック102ないし切削液供給ポートに対応するピン形状の位置決めピン48とされる。   Bearings 45 and 46 are provided between the inner peripheral surface of the annular support 43 and the outer peripheral surface of the distal end tubular portion 15. The bearings 45 and 46 are rolling bearings (radial bearings) including a plurality of rolling elements, and are respectively disposed at both ends of the annular support body 43 and rotatably support the holder body 11. An anti-rotation portion 47 is attached to the outer peripheral surface of the annular support 43. The anti-rotation portion 47 is a tubular member extending in parallel with the axis O, and is included in the fixing member 41. The rear end portion of the rotation preventing portion 47 is a positioning pin 102 having a pin shape corresponding to the positioning block 102 or the cutting fluid supply port fixed to the machining center.

位置決めピン48が位置決めブロック102に接続固定されることによって、固定部材41と固定支持体33と誘導用カム部32は回転しないよう固定される。これに対し主軸101とホルダ本体11とホルダ先端部材21とバリ取り工具113は一体回転する。このうちホルダ先端部材21およびバリ取り工具113は、軸線O方向に往復運動する。   When the positioning pin 48 is connected and fixed to the positioning block 102, the fixing member 41, the fixing support 33, and the guiding cam portion 32 are fixed so as not to rotate. On the other hand, the main shaft 101, the holder main body 11, the holder tip member 21, and the deburring tool 113 rotate integrally. Among these, the holder tip member 21 and the deburring tool 113 reciprocate in the axis O direction.

ところで上述した実施形態によれば、主軸101に装着されるシャンク部12を後端側に有するホルダ本体11と、ホルダ本体11に軸線O方向進退動可能に取り付けられ、バリ取り工具113を保持する工具保持部22を有するホルダ先端部材21と、ホルダ先端部材21の外径側に配置されて外方から回り止めされる固定部材41と、ホルダ先端部材21および固定部材41間に介在する機構であってホルダ先端部材21の回転運動を利用してホルダ先端部材21を軸線O方向に往復運動させる往復運動誘導機構31とを備える。これにより、主軸101の回転に比例してバリ取り工具113を高速で往復運動させることができ、バリ取り工具113を用いてワークをバリ取りしたり、あるいは他の工具を用いてワークを研削したりする際の作業効率が向上する。   By the way, according to the above-described embodiment, the holder main body 11 having the shank portion 12 attached to the main shaft 101 on the rear end side, and the holder main body 11 are attached to the holder main body 11 so as to be movable back and forth in the axis O direction, and hold the deburring tool 113. A holder tip member 21 having a tool holding portion 22, a fixing member 41 arranged on the outer diameter side of the holder tip member 21 and prevented from rotating from the outside, and a mechanism interposed between the holder tip member 21 and the fixing member 41. A reciprocating motion induction mechanism 31 that reciprocates the holder front end member 21 in the direction of the axis O using the rotational motion of the holder front end member 21 is provided. Thereby, the deburring tool 113 can be reciprocated at high speed in proportion to the rotation of the spindle 101, and the deburring tool 113 can be used to deburr the workpiece, or another tool can be used to grind the workpiece. The work efficiency during the process is improved.

また上述した実施形態によれば、往復運動誘導機構31はホルダ先端部材21が通される中央孔34およびホルダ先端部材21と軸線O方向に対面する環状カム面36を有し、固定部材41に支持される誘導用カム部32を含み、ホルダ先端部材21は回転可能に支持されて環状カム面36を転走するローラ25を含み、ホルダ本体11およびホルダ先端部材21間にはローラ25を環状カム面36に接触させるように付勢する弾性部材14が設けられ、環状カム面36は全周に亘って軸線O方向の高低差を有することから、ホルダ先端部材21の回転を利用してホルダ先端部材21を軸線O方向に往復運動させることができる。したがってバリ取り工具113を高速で往復運動させることができる。   Further, according to the above-described embodiment, the reciprocating motion guiding mechanism 31 has the central hole 34 through which the holder tip member 21 passes and the annular cam surface 36 facing the holder tip member 21 in the axis O direction. The holder tip member 21 includes a roller 25 that is rotatably supported and rolls on the annular cam surface 36, and the roller 25 is annular between the holder body 11 and the holder tip member 21. The elastic member 14 that is urged to contact the cam surface 36 is provided, and the annular cam surface 36 has a height difference in the direction of the axis O over the entire circumference. The tip member 21 can be reciprocated in the direction of the axis O. Therefore, the deburring tool 113 can be reciprocated at high speed.

また上述した実施形態によればホルダ先端部材21はローラ軸27をさらに含む。ローラ軸27の根元側がホルダ先端部材21の外径側に螺合するとともにローラ軸27の先端側がローラ25を回転自在に軸支する。ローラ軸27の根元側外周に形成される雄ねじは、図2に細矢印で示すローラ25の回転方向とは逆転方向を緩め方向とする雄ねじである。これによりローラ軸27は緩み止めされ、ホルダ先端部材21からの脱落を防止される。   Further, according to the embodiment described above, the holder tip member 21 further includes the roller shaft 27. The base side of the roller shaft 27 is screwed to the outer diameter side of the holder tip member 21, and the tip side of the roller shaft 27 pivotally supports the roller 25. A male screw formed on the outer periphery of the base side of the roller shaft 27 is a male screw whose loosening direction is a direction reverse to the rotation direction of the roller 25 indicated by a thin arrow in FIG. As a result, the roller shaft 27 is prevented from loosening and is prevented from falling off the holder tip member 21.

また上述した実施形態によれば、環状カム面36は図2に示すように周方向に所定の位相で高低差Dを有することから、安定した速度でホルダ先端部材21を往復運動させることができる。   Further, according to the above-described embodiment, the annular cam surface 36 has a height difference D with a predetermined phase in the circumferential direction as shown in FIG. 2, and thus the holder tip member 21 can be reciprocated at a stable speed. .

また上述した実施形態によれば、ローラ25が周方向に間隔を空けてホルダ先端部材21に複数配設されることから、ホルダ先端部材21の往復運動を安定して実行することができる。   Further, according to the above-described embodiment, a plurality of rollers 25 are arranged on the holder tip member 21 at intervals in the circumferential direction, so that the reciprocating motion of the holder tip member 21 can be stably performed.

また上述した実施形態によれば、ホルダ先端部材21が、ローラ25を挟んで環状カム面36と向き合う環状の間座24と、間座24を回転自在に支持するスラストベアリング26を含むことから、ホルダ先端部材21の耐久性が向上する。   According to the above-described embodiment, the holder tip member 21 includes the annular spacer 24 facing the annular cam surface 36 with the roller 25 interposed therebetween, and the thrust bearing 26 that rotatably supports the spacer 24. The durability of the holder tip member 21 is improved.

また上述した実施形態によれば、固定部材41が、ホルダ本体11の外周を包囲する環状支持体43と、環状支持体43の内周面およびホルダ本体11の外周面間に設けられるベアリング45,46を含むことから、環状支持体43をホルダ本体11に安定して支持することができる。   According to the above-described embodiment, the fixing member 41 includes the annular support 43 that surrounds the outer periphery of the holder main body 11, the bearing 45 provided between the inner peripheral surface of the annular support 43 and the outer peripheral surface of the holder main body 11, 46 is included, the annular support 43 can be stably supported by the holder main body 11.

また上述した実施形態によれば、固定部材41は、工作機械の非回転部分になる位置決めブロック102と連結するための位置決めピン48をさらに含む。これにより既存の位置決めブロック102を利用して固定部材41を容易に回り止めすることができる。   Further, according to the above-described embodiment, the fixing member 41 further includes the positioning pin 48 for connecting to the positioning block 102 that becomes a non-rotating part of the machine tool. Thereby, the fixing member 41 can be easily prevented from rotating using the existing positioning block 102.

以上、図面を参照してこの考案の実施の形態を説明したが、この考案は、図示した実施の形態のものに限定されない。図示した実施の形態に対して、この考案と同一の範囲内において、あるいは均等の範囲内において、種々の修正や変形を加えることが可能である。   Although the embodiments of the present invention have been described above with reference to the drawings, the present invention is not limited to the illustrated embodiments. Various modifications and variations can be made to the illustrated embodiment within the same range as the present invention or within an equivalent range.

この考案になる回転誘導ホルダは、工作機械において有利に利用される。   The rotation induction holder according to the present invention is advantageously used in machine tools.

10 回転誘導ホルダ、 11 ホルダ本体、
12 シャンク部、 13 キー、 14 弾性部材、
15 先端筒状部、 21 ホルダ先端部材、 22 工具保持部、
24 間座、 25 ローラ、
26 スラストベアリング、 27 ローラ軸、
28 環状段差、 29 サイドロックボルト、
31 往復運動誘導機構、 32 誘導用カム部(環状部材)、
33 固定支持体、 34 中央孔、 36 環状カム面、
41 固定部材、 43 環状支持体、
45,46 ベアリング、 47 回り止め部、 48 位置決めピン、
101 主軸、 102 位置決めブロック、
113 バリ取り工具、 D 高低差、 O 軸線。
10 rotation induction holder, 11 holder body,
12 shank parts, 13 keys, 14 elastic members,
15 tip cylindrical part, 21 holder tip member, 22 tool holding part,
24 spacers, 25 rollers,
26 Thrust bearing, 27 Roller shaft,
28 annular step, 29 side lock bolt,
31 reciprocating motion guiding mechanism, 32 guiding cam portion (annular member),
33 fixed support, 34 central hole, 36 annular cam surface,
41 fixing member, 43 annular support,
45, 46 Bearing, 47 Non-rotating part, 48 Positioning pin,
101 spindle, 102 positioning block,
113 Deburring tool, D Height difference, O axis.

Claims (8)

工作機械の主軸に装着されるシャンク部を後端側に有するホルダ本体と、
前記ホルダ本体に軸方向進退動可能に取り付けられ、工具を保持する工具保持部を有するホルダ先端部材と、
前記ホルダ先端部材の外径側に配置されて外方から回り止めされる固定部材と、
前記ホルダ先端部材および前記固定部材間に介在して、前記ホルダ先端部材の回転運動を利用して前記ホルダ先端部材を軸方向に往復運動させる往復運動誘導機構とを備える、回転誘導ホルダ。
A holder body having a shank portion mounted on the spindle of the machine tool on the rear end side;
A holder tip member attached to the holder body so as to be capable of moving forward and backward in the axial direction, and having a tool holding portion for holding a tool;
A fixing member disposed on the outer diameter side of the holder tip member and prevented from rotating from the outside;
A rotation induction holder, comprising: a reciprocating motion induction mechanism that is interposed between the holder tip member and the fixed member and reciprocates the holder tip member in the axial direction using the rotational motion of the holder tip member.
前記往復運動誘導機構は、前記ホルダ先端部材が通される中央孔および前記ホルダ先端部材と軸方向に対面する環状カム面を有し、前記固定部材に支持される環状部材を含み、
前記ホルダ先端部材は、回転可能に支持されて前記環状カム面を転走するローラを含み、
前記ホルダ本体および前記ホルダ先端部材間には、前記ローラを前記環状カム面に接触させるように付勢する弾性部材が設けられ、
前記環状カム面は、全周に亘って軸方向の高低差を有する、請求項1に記載の回転誘導ホルダ。
The reciprocating motion induction mechanism includes a central hole through which the holder tip member is passed and an annular cam surface that faces the holder tip member in the axial direction, and includes an annular member supported by the fixing member,
The holder tip member includes a roller that is rotatably supported and rolls on the annular cam surface;
An elastic member is provided between the holder main body and the holder tip member to urge the roller so as to contact the annular cam surface,
The rotation guide holder according to claim 1, wherein the annular cam surface has a height difference in the axial direction over the entire circumference.
前記ホルダ先端部材は、根元側がホルダ先端部材の基部に螺合するとともに先端側が前記ローラを軸支するローラ軸をさらに含み、
前記ローラ軸の根元側外周に形成される雄ねじは、前記ローラの回転方向とは逆転方向を緩め方向とする雄ねじである、請求項2に記載の回転誘導ホルダ。
The holder tip member further includes a roller shaft whose root side is screwed to the base of the holder tip member and whose tip side pivotally supports the roller;
The rotation induction holder according to claim 2, wherein the external thread formed on the outer periphery of the base side of the roller shaft is an external thread whose loosening direction is a direction reverse to the rotational direction of the roller.
前記環状カム面は、周方向に所定の位相で高低差を有する、請求項2または3に記載の回転誘導ホルダ。   The rotation guide holder according to claim 2, wherein the annular cam surface has a height difference at a predetermined phase in a circumferential direction. 前記ローラは、前記ホルダ先端部材の周方向に間隔を空けて複数配設される、請求項4に記載の回転誘導ホルダ。   The rotation guide holder according to claim 4, wherein a plurality of the rollers are arranged at intervals in the circumferential direction of the holder tip member. 前記ホルダ先端部材は、前記ローラを挟んで前記環状カム面と向き合う環状の間座と、前記間座を回転自在に支持するスラストベアリングをさらに含む、請求項2〜5のいずれかに記載の回転誘導ホルダ。   The rotation according to any one of claims 2 to 5, wherein the holder tip member further includes an annular spacer facing the annular cam surface across the roller, and a thrust bearing that rotatably supports the spacer. Induction holder. 前記固定部材は、前記ホルダ本体の外周を包囲する環状支持体と、前記環状支持体の内周面および前記ホルダ本体の外周面間に設けられるベアリングを含む、請求項1〜6のいずれかに記載の回転誘導ホルダ。   The fixing member includes an annular support that surrounds the outer periphery of the holder body, and a bearing provided between an inner peripheral surface of the annular support and an outer peripheral surface of the holder body. The rotation induction holder as described. 前記固定部材は、工作機械の非回転部分と連結するための連結部をさらに含む、請求項1〜7のいずれかに記載の回転誘導ホルダ。   The rotation guide holder according to claim 1, wherein the fixing member further includes a connecting portion for connecting to a non-rotating portion of the machine tool.
JP2014005010U 2014-09-19 2014-09-19 Rotation induction holder Expired - Lifetime JP3194648U (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018030218A (en) * 2016-08-26 2018-03-01 アイシン精機株式会社 Tool holding device
KR101869863B1 (en) * 2018-03-26 2018-06-21 최성진 Cam type deburring device for burr removal
JP2022042470A (en) * 2020-09-02 2022-03-14 株式会社クロイツ Tool holding device and deburring device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2018030218A (en) * 2016-08-26 2018-03-01 アイシン精機株式会社 Tool holding device
KR101869863B1 (en) * 2018-03-26 2018-06-21 최성진 Cam type deburring device for burr removal
JP2022042470A (en) * 2020-09-02 2022-03-14 株式会社クロイツ Tool holding device and deburring device

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