JP6236693B2 - Holder device - Google Patents

Holder device Download PDF

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JP6236693B2
JP6236693B2 JP2013178300A JP2013178300A JP6236693B2 JP 6236693 B2 JP6236693 B2 JP 6236693B2 JP 2013178300 A JP2013178300 A JP 2013178300A JP 2013178300 A JP2013178300 A JP 2013178300A JP 6236693 B2 JP6236693 B2 JP 6236693B2
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shaft member
holder
holder body
engaging member
rotation
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JP2015044278A (en
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康行 石田
康行 石田
川下　英盛
英盛 川下
駿河　宏和
宏和 駿河
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Big Daishowa Co Ltd
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Description

切削加工に用いる回転工具等の軸部材を保持するホルダ装置であって、回転工具のホルダ装置に対する相対回転および抜出しを規制でき、しかも、回転工具を回転軸芯の方向に沿って位置調節できるホルダ装置に関する。   A holder device for holding a shaft member such as a rotary tool used for cutting, which can regulate relative rotation and extraction of the rotary tool with respect to the holder device, and can adjust the position of the rotary tool along the direction of the rotation axis Relates to the device.

従来、この種のホルダ装置には、加工時の負荷などによって刃具がホルダ装置の回転軸芯方向に変位し、あるいは、刃具がホルダ装置に対して相対回転してしまう問題があった。
上記の問題に対応した技術としては、例えば以下の特許文献１及び特許文献２に示すものがある。 Conventionally, this type of holder device has a problem that the cutting tool is displaced in the direction of the axis of rotation of the holder device due to a load during processing or the like, or the cutting tool rotates relative to the holder device.
As a technique corresponding to the above problem, for example, there are techniques shown in Patent Document 1 and Patent Document 2 below.

特許文献１に記載のホルダ装置では、ホルダ装置の回転中心部に設けた透孔に刃具を挿入し、ホルダ装置の側に設けられたツールドライバに刃具を固定する。ツールドライバは、ドライバピンによってホルダ装置側の嵌合雌部に相対回転不能に嵌合されている。さらに、ホルダ装置の軸芯上に組み込まれたアジャストスクリューによってツールドライバの前後位置を変更することができる。これにより、ホルダ装置に対する刃具の相対回転を規制すると同時に刃具の突出長さを調節している。   In the holder device described in Patent Document 1, a cutting tool is inserted into a through hole provided in the rotation center of the holder device, and the cutting tool is fixed to a tool driver provided on the holder device side. The tool driver is fitted to the fitting female portion on the holder device side by a driver pin so as not to be relatively rotatable. Furthermore, the front / rear position of the tool driver can be changed by an adjustment screw incorporated on the axis of the holder device. Thereby, the relative rotation of the blade with respect to the holder device is restricted, and at the same time, the protruding length of the blade is adjusted.

特許文献２に記載のホルダ装置は、チャック内に設けたボール頭部を有するロッキング要素と刃具端部に設けたロッキング溝とを係合させる構成の工具の脱出防止部を備えている。さらに、前記脱出防止部は、刃具の回転方向と逆方向、即ち、刃具の緩み方向に向けてロッキング作用が発揮されるよう螺旋状あるいはＬ字状に構成することにより、刃具のホルダ装置に対する回転軸芯方向への変位及び相対回転を防止している。   The holder device described in Patent Document 2 includes a tool escape prevention part configured to engage a locking element having a ball head provided in a chuck and a locking groove provided at an end of a cutting tool. Furthermore, the escape prevention part is configured in a spiral or L-shape so that a locking action is exerted in the direction opposite to the rotation direction of the blade, that is, in the loosening direction of the blade, thereby rotating the blade tool relative to the holder device. Displacement and relative rotation in the axial direction are prevented.

特開２００１−２８７１３５号公報（〔００１１〕乃至〔００１４〕）JP 2001-287135 A ([0011] to [0014]) 特表２００９−５３３２３４（〔０００７〕乃至〔００１３〕）Special table 2009-533234 ([0007] to [0013])

上記特許文献１に記載のホルダ装置では、ツールドライバの位置をアジャストスクリューで調節可能である。ただし、刃具を固定したツールドライバは、ホルダ本体の内部においてツールドライバがさらに押し込まれるのを防止するように、ツールドライバの基部が単に受け止め固定されているだけである。つまり、ツールドライバはホルダ装置の軸芯方向には拘束されていないため、コレットによる刃具の把持力が損なわれた場合に刃具が抜け出す可能性がある。
上記特許文献２に記載のホルダ装置では、刃具はホルダ装置に対して、回転軸芯方向にも回転方向にも変位を規制されている。しかし、ホルダ装置と刃具とが専用品同士でなければ使用できないものとなってしまう。
また、規格品の刃具に前記ロッキング溝を追加工する必要もあり、入手性や費用的な問題は残る。
そこで、本発明は、刃具の回転および抜け出しを確実に阻止し、多様な刃具に対応して突出長さを調整可能なホルダ装置を提供することを目的とする。 In the holder device described in Patent Document 1, the position of the tool driver can be adjusted with an adjusting screw. However, the tool driver to which the cutting tool is fixed is merely received and fixed at the base of the tool driver so as to prevent the tool driver from being pushed further inside the holder body. That is, since the tool driver is not restrained in the axial direction of the holder device, the cutting tool may come out when the gripping force of the cutting tool by the collet is impaired.
In the holder device described in the above-mentioned Patent Document 2, displacement of the blade tool is restricted relative to the holder device both in the rotation axis direction and in the rotation direction. However, the holder device and the cutting tool can only be used if they are dedicated products.
In addition, it is necessary to additionally process the locking groove in a standard blade, which leaves problems with availability and cost.
Therefore, an object of the present invention is to provide a holder device that can reliably prevent rotation and withdrawal of the cutting tool and can adjust the protruding length corresponding to various cutting tools.

本発明に係るホルダ装置の特徴構成は、軸部材を把持するホルダ本体と、
前記軸部材の回転および抜け出しを規制するように前記軸部材の根元側端部を係合保持し、前記ホルダ本体に回転不能に内挿保持される係合部材と、
前記係合部材と前記ホルダ本体とを連結すると共に、前記ホルダ本体の回転軸芯の方向に前記ホルダ本体と前記係合部材との位置を調節可能な調節部材とを備え、
前記調節部材が、前記ホルダ本体に螺合する第１ネジ部と、前記係合部材に螺合し、前記第１ネジ部と緒元の異なる第２ネジ部とを備え、前記調節部材の回転操作により前記調節部材に対して前記ホルダ本体と前記係合部材とを前記回転軸芯の方向に沿って相対移動させて前記ホルダ本体に対する前記軸部材の突出長さを調節する点にある。 A characteristic configuration of the holder device according to the present invention includes a holder main body for holding a shaft member,
An engagement member that engages and holds the base side end of the shaft member so as to restrict rotation and withdrawal of the shaft member, and is inserted and held in the holder body in a non-rotatable manner;
The coupling member and the holder body are coupled , and an adjustment member capable of adjusting the positions of the holder body and the engagement member in the direction of the rotation axis of the holder body ,
The adjustment member includes a first screw portion that is screwed to the holder body, and a second screw portion that is screwed to the engagement member and has a different specification from the first screw portion. By operating, the holder body and the engagement member are moved relative to the adjustment member along the direction of the rotation axis to adjust the protruding length of the shaft member relative to the holder body .

本構成のように、ホルダ本体に対して係合部材の位置を調節する調節部材を、ホルダ本体と係合部材とを連結する状態に設けておくことで、加工作業中に工具に対して作用する押込み力および引抜き力の双方に抵抗可能となる。したがって、軸部材の保持力が低下した場合や切削力が大きくなった場合でも、軸部材は係合部材を介してホルダ本体に拘束され、相互の位置関係が変化のない状態を維持することができる。   As in this configuration, an adjustment member that adjusts the position of the engaging member with respect to the holder main body is provided in a state in which the holder main body and the engaging member are connected to each other, thereby acting on the tool during the machining operation. It is possible to resist both the pushing force and the pulling force. Therefore, even when the holding force of the shaft member is reduced or the cutting force is increased, the shaft member is restrained by the holder main body through the engaging member, and the state in which the mutual positional relationship remains unchanged can be maintained. it can.

また、係合部材とホルダ本体とが調節部材で連結されているので、調節部材の操作によってホルダ本体に対する係合部材の位置を回転軸芯の両方向への調節が容易となる。その結果、軸部材の突出調節が迅速なものとなる。   Further, since the engaging member and the holder main body are connected by the adjusting member, the position of the engaging member with respect to the holder main body can be easily adjusted in both directions of the rotation axis by operating the adjusting member. As a result, the protrusion of the shaft member can be quickly adjusted.

さらに、係合部材がホルダ本体と別部品で構成されているので、把持する軸部材の形状に応じた係合部材に着脱交換が可能となり、入手性が良く安価な規格品の刃具も使用可能となり、軸部材である刃具の選択範囲が大幅に広がる。   Furthermore, since the engaging member is composed of a separate part from the holder body, it is possible to attach and detach the engaging member according to the shape of the shaft member to be gripped. Thus, the selection range of the blade as the shaft member is greatly expanded.

ホルダ本体に回転不能に保持される係合部材は、前記係合部材の外面に、前記回転軸芯の方向に沿う姿勢のガイド溝が形成され、前記ガイド溝に係合するガイド凸部が前記ホルダ本体の内部に備えられるものであってもよい。   The engaging member that is non-rotatably held by the holder main body is formed with a guide groove in a posture along the direction of the rotation axis on the outer surface of the engaging member, and the guide convex portion that engages with the guide groove It may be provided inside the holder body.

本構成であれば、係合部材の表面に特段の突起部を形成する必要がない。一方、ホルダ本体の内部には、ガイド溝が係合できるだけの僅かな凸部を形成すれば足りるから、前記ガイド凸部の形成も容易となる。よって、操作が簡単で合理的な回転規制部を構成することができる。   With this configuration, it is not necessary to form a special protrusion on the surface of the engaging member. On the other hand, since it suffices to form a slight convex portion enough to engage the guide groove inside the holder main body, the guide convex portion can be easily formed. Therefore, it is possible to configure a rotation restricting portion that is easy to operate and rational.

また、本構成であれば、ホルダ本体に対する係合部材の位置調節を調節部材のみの操作で行うことができる。また、係合部材に作用する押込み力あるいは引抜き力がホルダ本体に伝達される際には調節部材のネジ部を介するから、ネジ溝の全体で伝達力を分担することとなる。よって、調節部材ひいてはホルダ装置全体をコンパクトに構成することができる。また、係合保持部が異なる軸部材にも簡単に対応することができる。 Further, with this configuration, the position adjustment of the engagement member with respect to the holder body can be performed by operating only the adjustment member. Further, when the pushing force or the pulling force acting on the engaging member is transmitted to the holder body, the transmitting force is shared by the entire screw groove since the screw portion of the adjusting member is interposed. Therefore, the adjustment member and thus the entire holder device can be configured compactly. Further, it is possible to easily cope with shaft members having different engagement holding portions.

第１実施形態に係るホルダ装置の分解斜視図The disassembled perspective view of the holder apparatus which concerns on 1st Embodiment. 第１実施形態に係るホルダ装置の断面図Sectional drawing of the holder apparatus which concerns on 1st Embodiment 第１実施形態に係る係合部材とホルダ本体との固定要領を示す断面図Sectional drawing which shows the fixed point of the engaging member and holder main body which concern on 1st Embodiment 第１実施形態に係る刃具と係合部材との固定要領を示す分解斜視図The disassembled perspective view which shows the fixed point of the cutter and engaging member which concern on 1st Embodiment. 第２実施形態に係る係合部材とホルダ本体との固定要領を示す断面図Sectional drawing which shows the fixed point of the engaging member and holder main body which concern on 2nd Embodiment 別実施形態に係る刃具と係合部材との固定要領を示す分解斜視図The disassembled perspective view which shows the fixed point of the cutting tool and engagement member which concern on another embodiment 別実施形態に係る刃具と係合部材との固定要領を示す分解斜視図The disassembled perspective view which shows the fixed point of the cutting tool and engagement member which concern on another embodiment

〔概要〕
本実施形態に係るホルダ装置Ｈは、例えば各種エンドミルやドリル等の工具の軸部材１を把持するものである。当該分野において、特に、アルミニウムやステンレス、チタン等のいわゆる難削材を加工する場合、さらには、効率化のために切込み深さを大きくしたり、加工速度を上げる場合には、軸部材１には大きなトルクが掛かる。本実施形態のホルダ装置Ｈは、仮に大きなトルクがかかった場合や軸部材１の把持力が低下した場合でも、軸部材１がホルダ装置Ｈから抜け出さず、また、ホルダ装置Ｈとの一体回転を維持する機能を備えるものである。
以下、本実施形態に係るホルダ装置Ｈを図面を参照しつつ説明する。 〔Overview〕
The holder device H according to the present embodiment grips a shaft member 1 of a tool such as various end mills and drills. In this field, in particular, when machining a so-called difficult-to-cut material such as aluminum, stainless steel, titanium, and the like, in order to increase the depth of cut for efficiency and to increase the processing speed, the shaft member 1 is used. Takes a lot of torque. In the holder device H of the present embodiment, even if a large torque is applied or the gripping force of the shaft member 1 is reduced, the shaft member 1 does not come out of the holder device H, and the holder device H can rotate integrally with the holder device H. It has a function to maintain.
Hereinafter, the holder device H according to the present embodiment will be described with reference to the drawings.

〔チャック部〕
図１には、本実施形態に係るホルダ装置Ｈの分解斜視図を示す。また、図２には、ホルダ装置Ｈの断面図を示す。
図１および図２に示すように、軸部材１は、ホルダ装置Ｈの先端に設けられたコレット２により把持される。コレット２は、ホルダ装置Ｈを構成するホルダ本体３の先端側からホルダ本体３の内部に挿入装着されている。コレット２の外周側にはチャック部５が設けられている。チャック部５のさらに外周側には多数のローラベアリング４を介してナット部材６が設けられている。 [Chuck part]
In FIG. 1, the disassembled perspective view of the holder apparatus H which concerns on this embodiment is shown. FIG. 2 shows a cross-sectional view of the holder device H.
As shown in FIGS. 1 and 2, the shaft member 1 is held by a collet 2 provided at the tip of the holder device H. The collet 2 is inserted and mounted in the holder body 3 from the front end side of the holder body 3 constituting the holder device H. A chuck portion 5 is provided on the outer peripheral side of the collet 2. A nut member 6 is provided on the outer peripheral side of the chuck portion 5 via a number of roller bearings 4.

尚、ホルダ装置Ｈは、各種方式のものを利用可能である。例えば、油圧でコレット２を縮径させるものや、軸部材１の外径より小さい内径を備えたコレット２を加熱する焼嵌め式のものであってもよい。また、コレット２を省略して、ホルダ本体３により軸部材１を把持するものであってもよい。   Note that various types of holder devices H can be used. For example, the collet 2 may be reduced in diameter by hydraulic pressure, or may be a shrink fitting type that heats the collet 2 having an inner diameter smaller than the outer diameter of the shaft member 1. Further, the collet 2 may be omitted and the shaft member 1 may be gripped by the holder body 3.

〔係合部材〕
軸部材１は、通常、上記チャック部５により把持されるだけで十分である。しかし、難削材を加工する場合や、特に高効率の加工を行うべく軸部材１を深切込み、高速回転あるいは高速送りさせる場合には、加工精度が低下するおそれがある。つまり、軸部材１のうちコレット２から突出した部分の基部に曲げモーメントが作用したり、軸部材にかかる切削負荷により、チャック部５材に対する軸部材１の抜け出しや相対回転が生じるからである。 (Engagement member)
It is usually sufficient that the shaft member 1 is gripped by the chuck portion 5. However, when machining difficult-to-cut materials, or particularly when the shaft member 1 is deep-cut to perform high-efficiency machining and rotated at high speed or fed at high speed, the machining accuracy may be reduced. That is, a bending moment acts on the base portion of the shaft member 1 protruding from the collet 2, or the shaft member 1 is pulled out of the chuck member 5 and relative rotation occurs due to a cutting load applied to the shaft member.

これを防止するために、本実施形態では、軸部材１の基端部と一体化する係合部材７をホルダ本体３の収容部３１に内装してある。
図１乃至図４に示す如く、係合部材７は筒状の部材である。一方には、軸部材１を挿入固定する固定孔７１を設け、一方には雌ネジ部７７を設けてある。 In order to prevent this, in the present embodiment, the engaging member 7 integrated with the base end portion of the shaft member 1 is housed in the housing portion 31 of the holder body 3.
As shown in FIGS. 1 to 4, the engaging member 7 is a cylindrical member. One is provided with a fixing hole 71 for inserting and fixing the shaft member 1, and the other is provided with a female screw portion 77.

係合部材７に対する軸部材１の固定要領を図４に示す。この例では、軸部材１の基端部には数条の螺旋溝１１が形成してあり、固定孔７１の内周面には当該螺旋溝１１に係入して軸部材１を固定する固定用凸部７２を設けてある。この固定用凸部７２は、係合部材７の壁部７３に形成した雌ネジ部７４に、雄ネジ状に形成した固定用凸部７２を螺入させ、この固定用凸部７２の頭部を固定孔７１の内面７５から突出させたものである。
尚、固定用凸部７２の構成はこの例に限られるものではなく、例えば固定孔７１の内面７５に同様の突起を一体成形してもよい。 FIG. 4 shows how to fix the shaft member 1 to the engaging member 7. In this example, several spiral grooves 11 are formed at the base end portion of the shaft member 1, and the inner peripheral surface of the fixing hole 71 is fixed to the shaft member 1 by being engaged with the spiral groove 11. A convex portion 72 is provided. The fixing convex portion 72 is formed by screwing a fixing convex portion 72 formed in a male screw shape into a female screw portion 74 formed in the wall portion 73 of the engaging member 7, and the head of the fixing convex portion 72. Is protruded from the inner surface 75 of the fixing hole 71.
Note that the configuration of the fixing convex portion 72 is not limited to this example. For example, a similar protrusion may be integrally formed on the inner surface 75 of the fixing hole 71.

軸部材１に設けた螺旋溝１１の螺旋方向は、ホルダ装置Ｈが回転駆動される際に、軸部材１がホルダ本体３から抜け出ない方向に設定する。固定孔７１の奥には、軸部材１の基端部と当接する底部７６を形成してある。これにより、軸部材１は係合部材７に対して回転規制され且つ抜け止め規制された状態で取り付けられる。   The spiral direction of the spiral groove 11 provided in the shaft member 1 is set to a direction in which the shaft member 1 does not come out of the holder body 3 when the holder device H is rotationally driven. A bottom portion 76 that contacts the base end portion of the shaft member 1 is formed in the back of the fixing hole 71. As a result, the shaft member 1 is attached in a state in which the rotation of the shaft member 1 is restricted with respect to the engaging member 7 and the retaining of the shaft member 1 is restricted.

係合部材７の他方の端部には、回転軸芯Ｘの方向に沿った位置調節用の雌ネジ部７７が形成してある。この雌ネジ部７７には、図１及び図３に示すように軸芯Ｘの方向に沿った係合部材７の位置調節を行う調節部材８が取り付けられる。本実施形態の調節部材８は、一対の逆ネジ部を備えている。一方は、係合部材７の位置調節用の雌ネジ部７７に螺合する第１ネジ部８１であり、他方は、ホルダ本体３の収容部３１の底部３２に設けた雌ネジ部３３に螺合する第２ネジ部８２である。   At the other end of the engaging member 7, a female screw part 77 for position adjustment along the direction of the rotation axis X is formed. An adjustment member 8 that adjusts the position of the engagement member 7 along the direction of the axis X is attached to the female screw portion 77 as shown in FIGS. The adjustment member 8 of this embodiment includes a pair of reverse screw portions. One is a first screw portion 81 that is screwed into a female screw portion 77 for adjusting the position of the engaging member 7, and the other is screwed into a female screw portion 33 provided on the bottom portion 32 of the housing portion 31 of the holder body 3. It is the 2nd screw part 82 to match.

この調節部材８によって係合部材７の位置調節を行うには、予め調節部材８と係合部材７とを、ホルダ本体３に対して所定の位置関係で装着しておく必要がある。具体的には、図３に示すように、まず、ホルダ本体３の収容部３１に調節部材８を装入し、ホルダ本体３に形成した位置調節用の雌ネジ部３３に調節部材８の第２ネジ部８２を軽く螺合させておく。ホルダ本体３の雌ネジ部３３は、ホルダ本体３の底部３２に形成した貫通孔３４に連続して形成されており、調節部材８は、この貫通孔３４を介してドライバー等で操作可能である。この状態で、収容部３１に係合部材７を装入し、係合部材７の雌ネジ部７７を調節部材８の第１ネジ部８１に位置合わせする。続けて、調節部材８を回転させ、調節部材８の第２ネジ部８２をホルダ本体３の雌ネジ部３３に螺入させると共に、調節部材８の第１ネジ部８１を係合部材７の雌ネジ部７７に螺入させる。ドライバーの操作により、軸部材１の先端がコレット２の先端から所定の長さだけ突出するように係合部材７の位置を調節する。   In order to adjust the position of the engaging member 7 by the adjusting member 8, it is necessary to mount the adjusting member 8 and the engaging member 7 on the holder body 3 in a predetermined positional relationship in advance. Specifically, as shown in FIG. 3, first, the adjustment member 8 is inserted into the accommodating portion 31 of the holder body 3, and the adjustment member 8 is inserted into the female screw portion 33 for position adjustment formed in the holder body 3. 2 The screw part 82 is lightly engaged. The female thread portion 33 of the holder main body 3 is formed continuously with a through hole 34 formed in the bottom portion 32 of the holder main body 3, and the adjustment member 8 can be operated by a driver or the like through the through hole 34. . In this state, the engaging member 7 is inserted into the accommodating portion 31, and the female screw portion 77 of the engaging member 7 is aligned with the first screw portion 81 of the adjustment member 8. Subsequently, the adjusting member 8 is rotated, and the second screw portion 82 of the adjusting member 8 is screwed into the female screw portion 33 of the holder body 3, and the first screw portion 81 of the adjusting member 8 is inserted into the female member of the engaging member 7. The screw part 77 is screwed. By the operation of the driver, the position of the engaging member 7 is adjusted so that the tip of the shaft member 1 protrudes from the tip of the collet 2 by a predetermined length.

係合部材７の外表面７８には、図２および図４に示すように、回転規制用のガイド溝７９が形成してある。このガイド溝７９は、係合部材７の周方向に沿って少なくとも一つ形成する。本実施形態では、互いに径方向に対向した位置に２箇所のガイド溝７９を設けてある。
尚、図２乃至図３および後述の図５においては、固定用凸部７２とガイド溝７９との機能を理解し易くするためにこれらの部材が同一平面にあるように表示している。しかし、実際には、図４に示すように固定用凸部７２とガイド溝７９とを外周方向に沿って異なる位置に設けてある。このように係合部材７に対して固定用凸部７２等の加工部位を分散配置することで係合部材７の強度をより確保することができる。ただし、図２乃至図３のように構成しても実用上特に問題は生じない。 As shown in FIGS. 2 and 4, a rotation restricting guide groove 79 is formed on the outer surface 78 of the engaging member 7. At least one guide groove 79 is formed along the circumferential direction of the engaging member 7. In the present embodiment, two guide grooves 79 are provided at positions opposed to each other in the radial direction.
2 to 3 and FIG. 5 to be described later, these members are shown in the same plane so that the functions of the fixing convex portion 72 and the guide groove 79 can be easily understood. However, actually, as shown in FIG. 4, the fixing projection 72 and the guide groove 79 are provided at different positions along the outer peripheral direction. Thus, the strength of the engaging member 7 can be further ensured by disposing the processing parts such as the fixing convex portions 72 and the like on the engaging member 7 in a distributed manner. However, even if it is configured as shown in FIGS.

一方、ホルダ本体３の収容部３１を形成する内壁３５にはガイド溝７９に係入するガイド凸部９を設けてある。このガイド凸部９の側面には、ホルダ本体３に形成した雌ネジ部３６に螺入するための雄ネジ部９１を形成してある。このようにガイド凸部９とガイド溝７９とを形成することで、調節部材８との供回りを防いで位置調節を可能としながら、軸部材１を用いた加工時にはホルダ本体３に対する係合部材７の回転が規制される。   On the other hand, a guide convex portion 9 that engages with the guide groove 79 is provided on the inner wall 35 that forms the accommodating portion 31 of the holder body 3. On the side surface of the guide convex portion 9, a male screw portion 91 for screwing into the female screw portion 36 formed in the holder main body 3 is formed. By forming the guide convex portion 9 and the guide groove 79 in this way, it is possible to adjust the position by preventing the rotation with the adjusting member 8, and at the time of processing using the shaft member 1, the engaging member with respect to the holder main body 3. 7 is restricted.

このように、係合部材７の外面にガイド溝７９を形成し、収容部３１の内壁３５にガイド凸部９を設けることで、係合部材７の表面に特段の突起部を形成しなくて済む。仮に、係合部材７の外面にガイド凸部９を形成することとすれば、収容部３１の入口から係合部材７の定位置となる奥の部位までガイド凸部９を回避する溝部などを形成しなければならない。しかし本構成ではそのような構成は不要となる。   As described above, the guide groove 79 is formed on the outer surface of the engaging member 7, and the guide convex portion 9 is provided on the inner wall 35 of the accommodating portion 31, so that no special protrusion is formed on the surface of the engaging member 7. That's it. If the guide convex portion 9 is formed on the outer surface of the engaging member 7, a groove portion that avoids the guide convex portion 9 from the entrance of the accommodating portion 31 to the inner part that is the fixed position of the engaging member 7 is provided. Must be formed. However, in this configuration, such a configuration is not necessary.

一方、ホルダ本体３の内部である収容部３１にガイド凸部９を形成する場合にも、前記ガイド溝７９が係合できるだけの僅かな凸部を収容部３１の内壁３５に形成するだけで足り、上記のごとくネジ状のガイド凸部９を螺入させる構成が実現する。このように本構成であれば、係合部材７の回転規制部をより合理的に構成することができる。   On the other hand, even when the guide protrusion 9 is formed in the housing portion 31 inside the holder body 3, it is sufficient to form a slight protrusion on the inner wall 35 of the housing portion 31 that can be engaged with the guide groove 79. As described above, a configuration in which the screw-like guide convex portion 9 is screwed is realized. Thus, with this configuration, the rotation restricting portion of the engaging member 7 can be configured more rationally.

係合部材７は、ホルダ本体３の収容部３１に内装されるが、係合部材７の外表面７８と収容部３１を形成する内壁３５との間には所定の隙間を設けてある。これは、把持される軸部材１の回転軸芯Ｘが偏心するのを防止するためである。軸部材１の回転軸芯Ｘは、軸部材１がコレット２に把持されることでほぼ決定される。仮に、係合部材７と収容部３１の内壁３５との間に隙間がないとすれば、軸部材１には、コレット２の把持による芯出し作用と、係合部材７の把持による芯出し作用とが付与される。この場合、加工誤差等のためにコレット２の軸芯Ｘと係合部材７の軸芯Ｘとが一致していないと、軸部材１には曲げ力が加わることになり、ホルダ本体３に対して軸部材１の同芯度及び同軸度が悪くなる。
また、調整部材８の第１ネジ部と第２ネジ部、対する係合部材７の雌ネジ部７７とホルダ本体３の雌ネジ部３３の同芯度、同軸度により収容部３１に対して偏心、傾斜することになる。
即ち、本実施形態の係合部材７は、軸部材１の回転軸芯Ｘには影響を及ぼすことなく、軸部材１のホルダ本体３に対する相対回転規制効果および抜け止め効果を発揮し、かつ、ホルダ本体３に対する軸部材１の突出長さの調節を容易にする。 The engaging member 7 is housed in the housing portion 31 of the holder body 3, and a predetermined gap is provided between the outer surface 78 of the engaging member 7 and the inner wall 35 forming the housing portion 31. This is for preventing the rotation axis X of the shaft member 1 to be gripped from being eccentric. The rotational axis X of the shaft member 1 is substantially determined by the shaft member 1 being gripped by the collet 2. If there is no gap between the engaging member 7 and the inner wall 35 of the accommodating portion 31, the shaft member 1 has a centering action by gripping the collet 2 and a centering action by gripping the engaging member 7. And are given. In this case, if the axis X of the collet 2 and the axis X of the engaging member 7 do not match due to a processing error or the like, a bending force is applied to the shaft member 1, and Thus, the concentricity and coaxiality of the shaft member 1 are deteriorated.
Further, the first screw portion and the second screw portion of the adjustment member 8, and the concentricity and coaxiality of the female screw portion 77 of the engaging member 7 and the female screw portion 33 of the holder body 3 are eccentric with respect to the housing portion 31. Will be inclined.
That is, the engaging member 7 of the present embodiment exhibits a relative rotation restricting effect and a retaining effect on the holder body 3 of the shaft member 1 without affecting the rotation axis X of the shaft member 1, and Adjustment of the protruding length of the shaft member 1 with respect to the holder body 3 is facilitated.

〔第２実施形態〕
図５には第２実施形態に係る係合部材７のホルダ本体３に対する固定要領を示す。
本実施形態では、調節部材８として、第１ネジ部８１と第２ネジ部８２とのネジ方向が同じで、ピッチが異なるものを利用する。図５に示すように、ホルダ本体３の収容部３１には、係合部材７およびコレット２の挿入に先立って調節部材８を装着しておく。ホルダ本体３に螺合する第２ネジ部８２のネジピッチは、係合部材７に螺合する第１ネジ部８１のネジピッチよりも小さく設定してある。よって、係合部材７を取り付ける前の第２ネジ部８２の初期位置は、貫通孔３４の側に深く入り込んだ位置となる。このため、第１ネジ部８１の外径寸法は、第２ネジ部８２の外径寸法よりも小さく構成しておき、図５の初期状態において、第１ネジ部８１が貫通孔３４の側に引退可能にする。 [Second Embodiment]
FIG. 5 shows how to fix the engaging member 7 to the holder body 3 according to the second embodiment.
In the present embodiment, as the adjusting member 8, the first screw portion 81 and the second screw portion 82 having the same screw direction and different pitches are used. As shown in FIG. 5, the adjusting member 8 is attached to the accommodating portion 31 of the holder body 3 prior to the insertion of the engaging member 7 and the collet 2. The screw pitch of the second screw portion 82 screwed to the holder body 3 is set smaller than the screw pitch of the first screw portion 81 screwed to the engaging member 7. Therefore, the initial position of the second screw portion 82 before the engagement member 7 is attached is a position deeply inserted into the through hole 34 side. For this reason, the outer diameter dimension of the first screw part 81 is configured to be smaller than the outer diameter dimension of the second screw part 82, and in the initial state of FIG. Enable retirement.

続けて係合部材７を収容部３１に挿入し、調節部材８の第１ネジ部８１に軽く当接させた状態で、貫通孔３４から工具を差し込み、調節部材８を回転させる。これにより、調節部材８はホルダ本体３の内部から収容部３１の側に移動し、同時に係合部材７が収容部３１の底部３２の側に引き込まれる。このようにして軸部材１がコレット２の先端から所定量だけ突出するように調節部材８を操作する。   Subsequently, the engaging member 7 is inserted into the accommodating portion 31 and a tool is inserted from the through hole 34 in a state where the engaging member 7 is lightly brought into contact with the first screw portion 81 of the adjusting member 8, and the adjusting member 8 is rotated. As a result, the adjustment member 8 moves from the inside of the holder main body 3 toward the accommodating portion 31, and at the same time, the engaging member 7 is pulled into the bottom 32 side of the accommodating portion 31. In this way, the adjustment member 8 is operated so that the shaft member 1 protrudes from the tip of the collet 2 by a predetermined amount.

〔その他の実施形態〕
図６には、係合部材７に対する軸部材１の取付態様についての別実施形態を示す。
本別実施形態では、係合部材７の固定孔７１の内面に、軸部材１の抜け止め機能を発揮する抜止凸部７０１を形成し、これとは別に、軸部材１の回転規制を行う回転止め凸部７０２を設ける。
一方、軸部材１の基端部には、前記抜止凸部７０１に係合する抜止係止用溝部１２を周方向に沿って環状に設けると共に、軸部材１を固定孔７１に挿入する際に、抜止凸部７０１との干渉を避けるよう回転軸芯Ｘと平行な平面部１３が形成してある。この平面部１３は、軸部材１の挿入が完了したのち、軸部材１をホルダ本体３に対して加工時の回転方向と反対に回転させることで、回転止め凸部７０２に当接させることができる。 [Other Embodiments]
FIG. 6 shows another embodiment of the manner in which the shaft member 1 is attached to the engaging member 7.
In the other embodiment, a retaining protrusion 701 that exhibits the retaining function of the shaft member 1 is formed on the inner surface of the fixing hole 71 of the engaging member 7, and separately from this, the rotation for restricting the rotation of the shaft member 1 is performed. A stop projection 702 is provided.
On the other hand, at the base end portion of the shaft member 1, a retaining locking groove portion 12 that engages with the retaining projection portion 701 is provided annularly along the circumferential direction, and when the shaft member 1 is inserted into the fixing hole 71. The flat surface portion 13 parallel to the rotation axis X is formed so as to avoid interference with the retaining projection 701. After the insertion of the shaft member 1 is completed, the flat surface portion 13 can be brought into contact with the anti-rotation convex portion 702 by rotating the shaft member 1 with respect to the holder body 3 in the direction opposite to the rotation direction at the time of processing. it can.

尚、平面部１３を形成しただけでは、軸部材１を挿入したのち回転止め凸部に平面部１３を当接させるための回転角は僅かとなる。つまり、抜止凸部７０１も回転止め凸部７０２も、軸部材１を挿入する際には何れも平面部１３と干渉しないことが必要であるから、双方の凸部７０１，７０２は周方向の略同じ位置に形成されることとなる。この結果、軸部材１を僅かに回転させただけで回転止め凸部７０２が平面部１３に当接するため、抜止凸部７０１については軸部材１の抜止め係止用溝１２と十分に係合できない可能性がある。そのため、図６に示すように軸部材１がさらに回転可能となるよう、回転止め凸部７０２が進入できる回転止用溝部１４を平面部１３から延出させておいてもよい。このような回転止用溝部１４を形成すると、抜止凸部７０１と抜止め係止用溝１２との係合がより確実となって好ましい。ただし、勿論、回転止用溝部１４は形成しなくてもよい。   In addition, only by forming the flat surface portion 13, after inserting the shaft member 1, the rotation angle for bringing the flat surface portion 13 into contact with the rotation prevention convex portion becomes small. In other words, since neither the retaining projection 701 nor the rotation preventing projection 702 needs to interfere with the flat surface portion 13 when the shaft member 1 is inserted, both the projections 701 and 702 are substantially in the circumferential direction. They are formed at the same position. As a result, the rotation preventing projection 702 comes into contact with the flat surface portion 13 only by slightly rotating the shaft member 1, so that the retaining projection 701 is sufficiently engaged with the retaining locking groove 12 of the shaft member 1. It may not be possible. Therefore, as shown in FIG. 6, the rotation-stop groove 14 into which the rotation-stop protrusion 702 can enter may be extended from the flat surface portion 13 so that the shaft member 1 can further rotate. Forming such a rotation-stop groove 14 is preferable because the engagement between the stopper protrusion 701 and the stopper-lock groove 12 is more reliable. However, of course, the rotation stop groove 14 may not be formed.

図７には、さらに別の軸部材１と係合部材７との固定要領を示す。
本別実施形態では、軸部材１の基端部に固定用の雄ネジ部１５が形成されている。これに対して係合部材７の固定孔７１には雌ネジ部７０３が形成してあり、軸部材１の端部が固定孔７１の底部７６に当接するまで軸部材１を螺入させることができる。軸部材１の雄ネジ部１５の螺旋方向は、軸部材１が加工のために回転する際に、軸部材１が係合部材７に対して締まる方向である。
本構成であれば、固定用の雄ネジ部１５および雌ネジ部７０３の全体が互いに当接して抜止効果および回転規制効果を発揮するから、強度的に有利な構成となる。
本構成に適用可能な規格品としては、例えば、ＤＩＮ １８３５−１（ｅｘｔｒａｃｔ） ＦｏｒｍＤ，ｔｈｒｅａｄｅｄ ｓｈａｎｋなどが挙げられる。 FIG. 7 shows a procedure for fixing another shaft member 1 and the engaging member 7.
In the present embodiment, a fixing male screw portion 15 is formed at the base end portion of the shaft member 1. On the other hand, a female screw portion 703 is formed in the fixing hole 71 of the engaging member 7, and the shaft member 1 can be screwed in until the end portion of the shaft member 1 contacts the bottom 76 of the fixing hole 71. it can. The spiral direction of the male screw portion 15 of the shaft member 1 is a direction in which the shaft member 1 is tightened with respect to the engaging member 7 when the shaft member 1 rotates for processing.
If it is this structure, since the whole male screw part 15 for fixation and the female screw part 703 will mutually contact | abut, and will exhibit a retaining effect and a rotation control effect, it becomes a structure advantageous in strength.
Examples of standard products applicable to this configuration include DIN 1835-1 (extract) FormD, threaded sunk, and the like.

尚、図示は省略するが、コレット２と係合部材７は一体物であってもよい。この場合、係合部材７に対する軸部材１の挿入深さは一定となる。つまり、コレット部分の先端からの軸部材１の突出し長さが一定となるから、軸部材１の曲げ特性が一定となる。これにより、ワークの加工時における軸部材１の軸ブレ量が所定範囲に収まり、加工精度が安定なものとなる。また、本構成であれば、調節部材８を操作することで係合部材７と軸部材１とが一体に出退するから、上記軸ブレ量を一定に保持したままホルダ本体３に対する軸部材１の突出長さを設定することができる。本構成においても、コレット部分に該当する先端部の外径を、ガイド溝７９を形成する基端部の外径よりも大きく形成しておき、ホルダ本体３に対する把持は主に先端部で行うこととする。これにより、軸部材１の曲り変形が極力阻止され、加工精度のよいホルダ装置を得ることができる。   Although illustration is omitted, the collet 2 and the engaging member 7 may be integrated. In this case, the insertion depth of the shaft member 1 with respect to the engaging member 7 is constant. That is, since the protruding length of the shaft member 1 from the tip of the collet portion is constant, the bending characteristics of the shaft member 1 are constant. Thereby, the amount of shaft blurring of the shaft member 1 during processing of the workpiece falls within a predetermined range, and the processing accuracy becomes stable. Further, in this configuration, the engaging member 7 and the shaft member 1 are integrally moved out by operating the adjusting member 8, so that the shaft member 1 with respect to the holder main body 3 is maintained with the above-mentioned shaft shake amount being kept constant. The protruding length of can be set. Also in this configuration, the outer diameter of the distal end corresponding to the collet portion is formed larger than the outer diameter of the proximal end forming the guide groove 79, and the holder body 3 is gripped mainly at the distal end. And Thereby, the bending deformation of the shaft member 1 is prevented as much as possible, and a holder device with high processing accuracy can be obtained.

本発明に係るホルダ装置は、ドリルやエンドミルなどの回転工具を把持するホルダ装置に広く利用することができる。   The holder device according to the present invention can be widely used for a holder device that holds a rotary tool such as a drill or an end mill.

１ 軸部材
２ コレット
３ ホルダ本体
７ 係合部材
７９ ガイド溝
８ 調節部材
８１ 第１ネジ部
８２ 第２ネジ部
９ ガイド凸部
Ｈ ホルダ装置
Ｘ 回転軸芯 DESCRIPTION OF SYMBOLS 1 Shaft member 2 Collet 3 Holder main body 7 Engagement member 79 Guide groove 8 Adjustment member 81 1st screw part 82 2nd screw part 9 Guide convex part H Holder apparatus X Rotating shaft center

Claims (1)

軸部材を把持するホルダ本体と、
前記軸部材の回転および抜け出しを規制するように前記軸部材の根元側端部を係合保持し、前記ホルダ本体に回転不能に内挿保持される係合部材と、
前記係合部材と前記ホルダ本体とを連結すると共に、前記ホルダ本体の回転軸芯の方向に前記ホルダ本体と前記係合部材との位置を調節可能な調節部材とを備え、
前記調節部材が、前記ホルダ本体に螺合する第１ネジ部と、前記係合部材に螺合し、前記第１ネジ部と緒元の異なる第２ネジ部とを備え、前記調節部材の回転操作により前記調節部材に対して前記ホルダ本体と前記係合部材とを前記回転軸芯の方向に沿って相対移動させて前記ホルダ本体に対する前記軸部材の突出長さを調節するホルダ装置。 A holder body for gripping the shaft member;
An engagement member that engages and holds the base side end of the shaft member so as to restrict rotation and withdrawal of the shaft member, and is inserted and held in the holder body in a non-rotatable manner;
The coupling member and the holder body are coupled , and an adjustment member capable of adjusting the positions of the holder body and the engagement member in the direction of the rotation axis of the holder body ,
The adjustment member includes a first screw portion that is screwed to the holder body, and a second screw portion that is screwed to the engagement member and has a different specification from the first screw portion. A holder device that adjusts a protruding length of the shaft member relative to the holder body by operating the holder body and the engaging member relative to each other along the direction of the rotation axis by the operation .
JP2013178300A 2013-08-29 2013-08-29 Holder device Active JP6236693B2 (en)

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JP2013178300A JP6236693B2 (en) 2013-08-29 2013-08-29 Holder device

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JP2015044278A JP2015044278A (en) 2015-03-12
JP6236693B2 true JP6236693B2 (en) 2017-11-29

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6352850B2 (en) * 2015-04-10 2018-07-04 株式会社新興鉄工所 Tool positioning jig

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59173505U (en) * 1983-05-07 1984-11-20 富士精工株式会社 hydraulic holder
JPS6215401U (en) * 1985-07-11 1987-01-29

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