JP2018058196A - Soft jaw for scroll chuck and chuck device - Google Patents

Soft jaw for scroll chuck and chuck device Download PDF

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JP2018058196A
JP2018058196A JP2017055294A JP2017055294A JP2018058196A JP 2018058196 A JP2018058196 A JP 2018058196A JP 2017055294 A JP2017055294 A JP 2017055294A JP 2017055294 A JP2017055294 A JP 2017055294A JP 2018058196 A JP2018058196 A JP 2018058196A
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rear end
claw
nail
raw
scroll chuck
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JP6630307B2 (en
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敏夫 石合
Toshio Ishiai
敏夫 石合
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Ishiai Prec Co Ltd
Ishiai Precision Co Ltd
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Ishiai Prec Co Ltd
Ishiai Precision Co Ltd
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Abstract

PROBLEM TO BE SOLVED: To provide a soft jaw for a scroll chuck to which a region of a soft jaw can be easily attached, and which can be processed in conformity to a form of a workpiece, and can sufficiently largely set the region of the soft jaw.SOLUTION: A soft jaw 30 for a scroll chuck which is used by being attached to a reverse jaw 20 for a scroll chuck device in which a step part 21 is formed so as to be heightened stepwise toward a rear end side from a tip side being the inside when attached comprises a stepwise groove hole part 31 which is formed into a groove hole shape to be fit to the step part 21 of the reverse jaw 20 so as to be fixed in a state of being covered to the reverse jaw 20 at a rear face side. The soft jaw also comprises an attachment bolt 35 which faces the step-shaped groove hole part 31, and is screwed so as to be fixed by abutting on a rear end face 23 of the reverse jaw 20, and being fastened thereto at a rear end part 34.SELECTED DRAWING: Figure 1

Description

この発明は、装着された際に内側となる先端側から後端側へ階段状に高くなるように段部が形成されたスクロールチャック装置用の逆爪に取り付けられて使用されるスクロールチャック用の生爪、及びその生爪が用いられたチャック装置に関する。   This invention is for a scroll chuck that is used by being attached to a reverse claw for a scroll chuck device in which a step portion is formed so as to rise stepwise from the front end side to the rear end side when it is attached. The present invention relates to a raw nail and a chuck device using the raw nail.

従来のスクロールチャック用の生爪としては、例えば、親爪のワーク挟持側先端に円弧状面を形成すると共にその親爪の長手方向を縦断する生爪牽引用ボルト挿通穴を設け、一方、生爪には該親爪との当接面を親爪の前記円弧面と同一円弧面を持った形状とし、その円弧面にねじ穴を形成され、この生爪を親爪の前記牽引穴に挿通するボルトによってワーク挟持応力方向に牽引取着するものとし、チャック本体側の爪取り付け部材にこの親爪を取り付けるためのボルト穴についてその座ぐりを奥深く掘削して前記の生爪牽引取付ボルトとの干渉を回避した旋盤用チャックのワーク挟持爪(特許文献1参照)が、提案されている。   As a conventional nail for a scroll chuck, for example, an arc-shaped surface is formed at the tip of the nail of the parent nail and a nail pulling bolt insertion hole that cuts the longitudinal direction of the nail is provided. The contact surface with the parent nail has a shape having the same arc surface as the arc surface of the parent nail, a screw hole is formed in the arc surface, and a workpiece is inserted by a bolt that inserts the raw nail into the pulling hole of the parent nail. A lathe that is towed and attached in the direction of pinching stress and that has been drilled deep into the bolt holes for attaching the parent claws to the chuck body side claw attachment members to avoid interference with the raw claw tow attachment bolts. A work clamping nail (see Patent Document 1) for a chuck is proposed.

従来の他のスクロールチャック用の生爪としては、例えば、把持形状側のセットボルトを、生爪本体側の先端部の外周はネジ部として生爪本体側ボルト孔内面に設けたネジ部と螺合可能となし、摺動取付片側ボルト孔に段差部を設けてセットボルト他端部はボルト頭として該段差部で受けられ、生爪本体側挿入先端部にレンチ受け部を形成し、レンチで該レンチ受け部を介してセットボルトを回転することによって前記両ネジ部の螺合を行って前述した前記生爪本体と摺動取付片との一体化を行うようにした旋盤用チャック装置に使用する把握生爪(特許文献2参照)が、提案されている。つまり、この形態例は、生爪本体を二つのボルトで摺動取付片に螺合して固定するものである。   As another conventional nail for a scroll chuck, for example, a grip set-side set bolt can be screwed with a threaded portion provided on the inner surface of the nail body side bolt hole with the outer periphery of the tip of the nail body side as a screw part. None, a stepped portion is provided in the bolt hole on one side of the sliding mounting, and the other end of the set bolt is received by the stepped portion as a bolt head. A wrench receiving portion is formed at the insertion tip of the raw nail body side, and the wrench receiving portion is formed A gripping raw claw used in a lathe chuck device in which the above-mentioned raw claw body and the sliding mounting piece are integrated by rotating the set bolt through a screw and screwing the both screw parts (patented) Document 2) has been proposed. That is, in this embodiment, the raw nail body is screwed and fixed to the sliding mounting piece with two bolts.

特開2002−346814号公報(第1頁)JP 2002-346814 A (first page) 特開2003−127011号公報(第1頁)JP 2003-127011 A (first page)

スクロールチャック用の生爪及びチャック装置に関して解決しようとする問題点は、従来の形態では、生爪におけるワークの形態に合わせて加工できる部位を、十分に大きく設けることが難しいことと、生爪の部位を備えたチャック爪を構成するために、生爪の部位を装着する作業が、煩雑で簡単ではないことにある。   The problems to be solved regarding the raw nail and the chuck device for the scroll chuck are that, in the conventional form, it is difficult to provide a sufficiently large part that can be processed according to the shape of the workpiece in the raw nail, and the raw nail part is provided. In order to construct the chuck claw, the work of attaching the part of the raw claw is complicated and not easy.

そこで本発明の目的は、生爪の部位をより簡単に装着でき、ワークの形態に合わせて加工できる生爪の部位を、十分に大きく設けることができるスクロールチャック用の生爪及びチャック装置を提供することにある。   Accordingly, an object of the present invention is to provide a raw claw and a chuck device for a scroll chuck that can easily attach a raw claw part and can provide a sufficiently large raw claw part that can be machined according to the form of a workpiece. is there.

本発明は上記目的を達成するために次の構成を備える。
本発明に係るスクロールチャック用の生爪の一形態によれば、装着された際に内側となる先端側から後端側へ階段状に高くなるように段部が形成されたスクロールチャック装置用の逆爪に取り付けられて使用されるスクロールチャック用の生爪であって、裏面側に、前記逆爪に被された状態に固定されるように、該逆爪の前記段部にフィットする溝穴状に形成された階段状の溝穴部を備え、後端部に、前記階段状の溝穴部に臨み、前記逆爪の後端面に当接して締め付けることで固定するように螺合された取付用ボルトを備える。
The present invention has the following configuration in order to achieve the above object.
According to the form of the raw nail for the scroll chuck according to the present invention, the reverse for the scroll chuck device in which the step portion is formed so as to rise stepwise from the front end side to the rear end side when being mounted. It is a raw nail for a scroll chuck that is used by being attached to a nail, and is formed in a slot shape that fits the stepped portion of the reverse nail so that it is fixed to the reverse side on the back side. For mounting, provided with a stepped slot formed, facing the stepped slot at the rear end, and fixed by abutting and tightening against the rear end surface of the reverse claw Provide bolts.

また、本発明に係るスクロールチャック用の生爪の一形態によれば、前記逆爪の段部のうちの少なくとも後端側の段部が、基本形状として四角形に設けられると共に、該段部の段差を作る起立した内側の面が、円柱状のワークの外周面に当接して把持するための円弧状の凹面に設けられたものであり、前記後端側の段部に外嵌するように設けられた前記階段状の溝穴部の後端側が、表裏方向に貫通した基本形状として四角形の貫通溝穴部であって、該貫通溝穴部の少なくとも先端側の両脇内角部が、前記円弧状の凹面の両脇角部が進入された状態で固定されるように、円形の貫通孔によって拡張されていることを特徴とすることができる。   Further, according to one embodiment of the raw nail for the scroll chuck according to the present invention, at least the stepped portion on the rear end side of the stepped portion of the reverse claw is provided in a quadrangular shape as a basic shape, and the step of the stepped portion is provided. The raised inner surface is formed on an arcuate concave surface for contacting and gripping the outer peripheral surface of the cylindrical workpiece, and is provided so as to be externally fitted to the stepped portion on the rear end side. The rear end side of the stepped slot portion thus formed is a rectangular through slot portion as a basic shape penetrating in the front and back direction, and the inner corners on both sides on at least the tip side of the through slot portion are the circles. It can be characterized by being extended by a circular through-hole so that both side corners of the arc-shaped concave surface are fixed in the state of entering.

また、本発明に係るチャック装置の一形態によれば、上述のスクロールチャック用の生爪が装着されたスクロールチャック装置を、被装着部が裏面側に延設されたチャックホルダーの表面側に固定されることで構成されることを特徴とすることができる。   Further, according to one embodiment of the chuck device according to the present invention, the scroll chuck device to which the above-mentioned raw chuck for the scroll chuck is mounted is fixed to the front surface side of the chuck holder in which the mounted portion extends to the back surface side. It can be characterized by comprising.

本発明に係るスクロールチャック用の生爪及びチャック装置によれば、生爪の部位をより簡単に装着でき、ワークの形態に合わせて加工できる生爪の部位を、十分に大きく設けることができるという特別有利な効果を奏する。   According to the raw nail and the chuck device for the scroll chuck according to the present invention, the raw nail part can be mounted more easily, and the raw nail part that can be machined according to the form of the workpiece can be provided with a particularly large advantage. There is an effect.

本発明に係るスクロールチャック用の生爪が装着されたチャック装置の形態例を示す斜視図である。It is a perspective view which shows the form example of the chuck | zipper apparatus with which the raw nail | claw for scroll chucks concerning this invention was mounted | worn. 図1の形態例のスクロールチャック用の生爪が装着される前のチャックホルダーが装着・固定されたスクロールチャック装置の斜視図である。FIG. 2 is a perspective view of a scroll chuck device to which a chuck holder is mounted and fixed before a raw nail for a scroll chuck of the embodiment of FIG. 1 is mounted. 本発明に係るスクロールチャック用の生爪の形態例であって、その表面側を示す平面図である。It is a form example of the raw nail | claw for scroll chucks based on this invention, Comprising: It is a top view which shows the surface side. 図3の生爪の形態例であって、その裏面側を示す底面図である。FIG. 4 is a bottom view showing the back surface side of the raw nail in FIG. 3. 図3の生爪の形態例に係る中央縦断面図である。It is a center longitudinal cross-sectional view which concerns on the form example of the raw nail | claw of FIG. 図3の生爪を逆爪に装着した使用状態の形態例を示す(a)要部拡大平面図、及び(b)要部拡大断面図である。It is the (a) principal part enlarged plan view and (b) principal part enlarged sectional view which show the example of the use condition which mounted | wore the reverse nail | claw with the raw nail | claw of FIG. 本発明に係るチャック装置の使用状態の形態例を示す側面図である。It is a side view which shows the example of the use condition of the chuck apparatus which concerns on this invention. 本発明に係るスクロールチャック用の生爪が装着されたチャック装置の他の形態例を示す斜視図である。It is a perspective view which shows the other example of a chuck | zipper apparatus with which the raw nail | claw for scroll chucks concerning this invention was mounted | worn. 図8の形態例のチャック装置に係る使用形態例を示す斜視図である。It is a perspective view which shows the usage example which concerns on the chuck apparatus of the example of FIG.

以下、本発明に係るスクロールチャック用の生爪及びチャック装置の形態例を図面(図1〜7)に基づいて説明する。このスクロールチャック用の生爪30は、装着された際に内側となる先端側から後端側へ階段状に高くなるように段部21が形成されたスクロールチャック装置用の逆爪20(図2参照)に取り付けられて使用されるものである。このスクロールチャック用の生爪30を構成要素とするスクロール型のチャック装置は、例えば、旋盤やフライス盤に装着されて使用できるものになっている。なお、上記の逆爪20のことは、外爪とも称されてる。   DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a raw claw and a chuck device for a scroll chuck according to the present invention will be described below with reference to the drawings (FIGS. 1 to 7). The raw nail 30 for the scroll chuck has a reverse claw 20 for a scroll chuck device (see FIG. 2) in which a stepped portion 21 is formed so as to rise stepwise from the front end side to the rear end side when the scroll chuck is attached. ) To be used. A scroll type chuck device having the raw nail 30 for the scroll chuck as a constituent element can be used by being mounted on a lathe or a milling machine, for example. In addition, said reverse nail | claw 20 is also called the outer nail | claw.

そして、本発明に係るスクロールチャック用の生爪30は、図3〜5に示すように、裏面側に、逆爪20に被された状態に固定されるように、その逆爪20の段部21にフィットする溝穴状に形成された階段状の溝穴部31を備え、後端部34に先後方向(生爪30の装着された逆爪20が締め付けのために動く移動方向と同方向)に貫通して設けられた雌ねじに、階段状の溝穴部31に臨み、逆爪20の後端面23(図6参照)に当接して締め付けることで固定するように螺合された取付用ボルト35を備える。本形態例では、逆爪20に生爪30を遊嵌状態に外嵌めした後、取付用ボルト35を締め付けることで、逆爪20の段部21の段差を形成する段差形成部(本形態例では円弧状の凹面24、24A)と、生爪30の階段状の溝穴部31の段差を形成する内段差形成部(本形態例では両内角33b、33bを備える部分)とを圧接させて固定させる構成になっている。なお、軸方向(段々の重なり方向)については、逆爪20の段々に形成された段部21の段上面に、生爪30の段々に形成された階段状の溝孔部31の段内底面が当接されて重ねられることで、位置決めがなされて固定される形態になっている。   And the raw nail | claw 30 for scroll chucks based on this invention is shown in FIGS. 3-5, and the step part 21 of the reverse nail | claw 20 is fixed to the back surface side in the state covered with the reverse nail | claw 20. Is provided with a step-like slot 31 formed in a slot shape that fits to the rear end 34 in the front-rear direction (the same direction as the moving direction in which the reverse claw 20 to which the raw claw 30 is attached moves for tightening). A mounting bolt 35 screwed so as to face the stepped slot 31 and abut against the rear end face 23 (see FIG. 6) of the reverse claw 20 and fasten it to a female screw provided therethrough. Is provided. In this embodiment, after the raw nail 30 is externally fitted to the reverse claw 20 and then the mounting bolt 35 is tightened, a step forming portion that forms the step of the step portion 21 of the reverse claw 20 (in this embodiment) The arc-shaped concave surfaces 24, 24A) and an inner step forming portion (a portion provided with both inner angles 33b, 33b in the present embodiment) are formed in pressure contact with each other and fixed. It is configured. As for the axial direction (the overlapping direction of the steps), the bottom surface of the stepped groove 31 formed in the steps of the raw claw 30 is formed on the stepped surface of the stepped portion 21 formed in the steps of the reverse claw 20. By being brought into contact with each other and being stacked, positioning is performed and the configuration is fixed.

このスクロールチャック用の生爪30によれば、図1、6に示すように、逆爪20に、外嵌して取付用ボルト35で締め付けることによって、より簡単に装着でき、その固定作業の作業性を向上できる。すなわち、背景技術の欄で説明したような複数のボルトによって締結・固定する作業を要しないと共に、逆爪20の段部21に倣ってその段部21に受けられて階段状の溝穴部31が安定的に外嵌するため、生爪30を一つの取付用ボルト35で簡単且つ適切に装着できる。   According to the raw nail 30 for the scroll chuck, as shown in FIGS. 1 and 6, it can be easily mounted by being externally fitted to the reverse nail 20 and tightened with the mounting bolt 35, and the workability of the fixing work is improved. Can be improved. That is, the work of fastening and fixing with a plurality of bolts as described in the background art is not required, and the stepped groove portion 31 is received by the stepped portion 21 following the stepped portion 21 of the reverse claw 20. Therefore, the raw nail 30 can be easily and appropriately mounted with the single mounting bolt 35.

また、このように形成された生爪30は、逆爪20を大きく覆い、先端側に取付けのためのボルトが配されないことから、例えば、プラスチック材によるワークを加工する際のような強度的に弱い材料をチャックする場合に、そのワークにより広い角度や深さ(長さや面積を含む)の範囲で接触して把持できる爪の形態に、適切に加工することができる。すなわち、本発明の生爪30によれば、ワーク形状に合わせて切削などで加工できる部位の範囲を適切に拡大できるため、生爪30の汎用性をより高めることができる。   Further, the raw nail 30 formed in this way covers the reverse nail 20 greatly, and no bolt for mounting is provided on the tip side, so that, for example, the strength is weak when processing a workpiece made of a plastic material. When the material is chucked, the workpiece can be appropriately processed into a nail shape that can be held in contact with a wide range of angles and depths (including length and area). That is, according to the raw nail 30 of the present invention, the range of parts that can be processed by cutting or the like according to the workpiece shape can be appropriately expanded, so the versatility of the raw nail 30 can be further enhanced.

また、本形態例によれば、逆爪20の段部21のうちの少なくとも後端側の段部22が、基本形状として四角形に設けられると共に、その段部21の段差を作る起立した内側の面が、円柱状のワークの外周面に当接して把持するための円弧状の凹面24に設けられたものであり、その後端側の段部22に外嵌するように設けられた階段状の溝穴部31の後端側が、表裏方向に貫通した基本形状として四角形の貫通溝穴部32であって、その貫通溝穴部32の少なくとも先端側の両脇内角部33、33が、円弧状の凹面24の両脇角部25、25が進入された状態で固定されるように、円形の貫通孔33aによって拡張されているように構成されている。   Further, according to the present embodiment, at least the rear end side step portion 22 of the step portion 21 of the reverse claw 20 is provided in a rectangular shape as a basic shape, and the raised inner side that forms the step of the step portion 21 is provided. The surface is provided on an arcuate concave surface 24 for abutting and gripping the outer peripheral surface of a columnar workpiece, and a step-like shape provided so as to be externally fitted to the stepped portion 22 on the rear end side. The rear end side of the slot 31 is a rectangular through slot 32 as a basic shape penetrating in the front and back direction, and both side inner corners 33 at the front end side of the through slot 32 are arcuate. It is comprised so that it may be expanded by the circular through-hole 33a so that both the side corner parts 25 and 25 of the concave surface 24 may be fixed in the approached state.

これによれば、取付用ボルト35を締め付けることによって、円弧状の凹面24に、両脇内角部33、33の両内角33b、33bが、圧接されて食い込むように当接する(図6参照)ため、強固に固定することができる。この生爪30の締め付けによる固定操作は、一つの取付用ボルト35をねじ込む操作によって、より簡単且つ確実に行うことができ、作業性及び信頼性を向上できる。   According to this, by tightening the mounting bolt 35, both the inner corners 33b, 33b of the inner corner portions 33, 33 are brought into pressure contact with the arcuate concave surface 24 (see FIG. 6). Can be firmly fixed. The fixing operation by tightening the raw claws 30 can be performed more easily and reliably by the operation of screwing one mounting bolt 35, and workability and reliability can be improved.

また、本形態例では、貫通溝穴部32だけでなく、その貫通溝穴部32から先端側の階段状の溝穴部31においても、同様に、円形の穿設孔33cによって、段状溝穴の内角部33が形成されている。これによれば、前述の貫通溝穴部32の機能と同様に、生爪30を逆爪20に強固且つ適切に固定するために有効に作用する。すなわち、円形の穿設孔33c、33cによって、階段状の溝穴部31の中段にも両脇内角部33、33が形成され、その中段の両脇内角部33、33によって両内角33b、33bが設けられた形態となっている。このため、その両内角33b、33bは、逆爪20の中段に設けられた円弧状の凹面24Aに、後端側の段部22の円弧状の凹面24に対する状態と同様に、圧接されて食い込むように当接する。これによって、中段の両内角33b、33bと後段の両内角33b、33bとの二段で、逆爪20に当接することになり、生爪30をより強固に安定的に固定することができる。さらに、円形の貫通孔33aや円形の穿設孔33cを設けることによれば、階段状の溝穴部31の成形加工を容易に行うことができるというメリットもある。すなわち、階段状の溝穴部31の内角部の形状を、直角に形成することは難しいが、本形態例のように円形の貫通孔33aや円形の穿設孔33cによって形成することで、容易に形成できる。   Further, in the present embodiment, not only the through-slot hole 32 but also the step-like slot 31 from the through-slot hole 32 to the tip side is similarly provided with a stepped groove by the circular drilling hole 33c. An inner corner 33 of the hole is formed. According to this, it acts effectively in order to fix the raw nail 30 to the reverse nail 20 firmly and appropriately, similarly to the function of the through-groove hole 32 described above. That is, both side inner corners 33, 33 are formed in the middle stage of the stepped slot 31 by the circular holes 33c, 33c, and both inner angles 33b, 33b are formed by the both side inner corners 33, 33 in the middle stage. Is provided. For this reason, both the inner angles 33b and 33b are pressed into and bite into the arcuate concave surface 24A provided in the middle step of the reverse claw 20 in the same manner as the arcuate concave surface 24 of the stepped portion 22 on the rear end side. Abut. As a result, the inner nail 33b, 33b in the middle stage and the inner angle 33b, 33b in the latter stage are brought into contact with the reverse claw 20, and the raw nail 30 can be fixed more firmly and stably. Furthermore, the provision of the circular through hole 33a and the circular drilling hole 33c has an advantage that the step-shaped slot 31 can be easily formed. That is, although it is difficult to form the inner corner of the stepped slot 31 at a right angle, it is easy to form by using the circular through hole 33a and the circular drilling hole 33c as in this embodiment. Can be formed.

また、図1、7に示すように、本発明に係るチャック装置10は、上述のスクロールチャック用の生爪30が装着されたスクロールチャック装置11を、被装着部41が裏面側に延設されたチャックホルダー40の表面側に固定されることで構成されている。なお、本形態例では、被装着部41の形態が円柱状に形成されており、このチャックホルダー40は、ボルト(図示せず)によって、スクロールチャック用の生爪30が装着されたスクロールチャック装置11に固定されている。また、図7に示す形態例では、そのチャック装置10が、旋盤のチャック装置50にチャックされて固定されている形態例を示している。   As shown in FIGS. 1 and 7, the chuck device 10 according to the present invention has a scroll chuck device 11 to which the above-described raw claw 30 for the scroll chuck is mounted, and a mounted portion 41 is extended to the back side. It is configured by being fixed to the surface side of the chuck holder 40. In this embodiment, the mounted portion 41 is formed in a columnar shape, and the chuck holder 40 has a scroll chuck device 11 on which a raw nail 30 for a scroll chuck is mounted by a bolt (not shown). It is fixed to. In the embodiment shown in FIG. 7, the chuck device 10 is chucked and fixed to the lathe chuck device 50.

このチャック装置10によれば、ワークを固定したままで、例えば旋盤のチャック装置50から脱着して、他の例えばフライス盤などの加工装置に装着することができ、ワークをチャック装置から外すことなく、連続的に加工を行うことができる。すなわち、ワークをチャック装置から外すことなく加工できるため、チャックをし直すことによる位置ズレを防止し、加工精度を向上できる。また、旋盤で加工したワーク(製品)を、例えばフライス盤で加工するために新たな生爪を製作することなく、その旋盤のチャックのままで加工ができ、フライス用の生爪の製作が不要になるという利点がある。   According to this chuck device 10, the workpiece can be fixed and removed from the chuck device 50 of a lathe, for example, and mounted on another processing device such as a milling machine, for example, without removing the workpiece from the chuck device. Processing can be performed continuously. That is, since the workpiece can be processed without removing it from the chuck device, misalignment due to re-chucking can be prevented, and processing accuracy can be improved. In addition, workpieces (products) processed with a lathe can be processed with the lathe's chuck without producing new raw claws, for example, for machining with a milling machine, making it unnecessary to produce raw claws for milling. There are advantages.

次に、図8及び図9に基づいて、本発明に係る他の形態例の生爪(扇型の生爪30A)が装着されたチャック装置について説明する。この扇型の生爪30Aは、ワークの形態に合わせて加工できる部位が大きく形成された幅の広い形態に設けられている。また、この扇型の生爪30Aには、前述の生爪30と同様に、裏面側に階段状の溝穴部31が形成されていると共に、貫通溝穴部32が設けられている。従って、この扇型の生爪30Aは、前述の生爪30と同様に、逆爪20に容易且つ適切に装着できる。   Next, based on FIG.8 and FIG.9, the chuck | zipper apparatus with which the raw nail | claw (fan-shaped raw nail | claw 30A) of the other embodiment which concerns on this invention was mounted | worn is demonstrated. This fan-shaped raw nail 30A is provided in a wide form in which a part that can be processed according to the form of the workpiece is formed large. Further, in the fan-shaped raw claw 30A, a step-like slot 31 is formed on the back surface side and a through slot 32 is provided in the same manner as the raw claw 30 described above. Accordingly, the fan-shaped raw nail 30A can be easily and appropriately mounted on the reverse nail 20 in the same manner as the above-described raw nail 30.

この扇型の生爪30Aによれば、例えば図9に示すような肉の薄いリング状のワーク60を、ワークチャック用に切削加工されて設けられた円弧状の段部36によって、適切にチャックすることができる。すなわち、この扇型の生爪30Aによれば、リング形状のように、厚みや幅が薄く、変形や歪の起きやすいワークを適切にチャックし、旋盤加工、フライス加工、MC加工等を適切に行うことができる。   According to the fan-shaped raw claw 30A, for example, a thin ring-shaped workpiece 60 as shown in FIG. 9 is appropriately chucked by an arc-shaped step portion 36 provided by cutting for a workpiece chuck. be able to. That is, according to the fan-shaped raw claw 30A, a workpiece having a small thickness or width and easily deformed or distorted, such as a ring shape, is appropriately chucked, and lathe machining, milling, MC machining, etc. are appropriately performed. be able to.

また、以上に説明した生爪30及び扇型の生爪30Aは、軽量化のためやワークを傷つけないために、アルミニウム材料(例えばA7000系)や樹脂材料などの軽量で硬度の低い材料を用いて形成できるのは勿論である。これによれば、作業性の向上や、ワークの材質に適切に対応させることができる。   Further, the raw nail 30 and the fan-shaped raw nail 30A described above are formed by using a light and low hardness material such as an aluminum material (for example, A7000 series) or a resin material in order to reduce the weight or not damage the workpiece. Of course you can. According to this, workability can be improved and the work material can be appropriately handled.

以上、本発明につき好適な形態例を挙げて種々説明してきたが、本発明はこの形態例に限定されるものではなく、発明の精神を逸脱しない範囲内で多くの改変を施し得るのは勿論ことである。   As described above, the present invention has been described in various ways with preferred embodiments. However, the present invention is not limited to these embodiments, and many modifications can be made without departing from the spirit of the invention. That is.

10 チャック装置
11 スクロールチャック装置
20 逆爪
21 段部
22 後端側の段部
23 後端面
24 円弧状の凹面
24A 円弧状の凹面
25 両脇角部
30 生爪
30A 扇型の生爪
31 階段状の溝穴部
32 貫通溝穴部
33 内角部
33a 円形の貫通孔
33b 内角
33c 円形の穿設孔
34 後端部
35 取付用ボルト
36 段部
40 チャックホルダー
41 被装着部
50 旋盤のチャック装置
60 リング状のワーク
DESCRIPTION OF SYMBOLS 10 Chuck apparatus 11 Scroll chuck apparatus 20 Reverse claw 21 Step part 22 Back end side step part 23 Rear end face 24 Arc-shaped concave surface 24A Arc-shaped concave surface 25 Both sides corner part 30 Raw claw 30A Fan-shaped raw claw 31 Stair-shaped groove Hole portion 32 Through-groove hole portion 33 Inner corner portion 33a Circular through hole 33b Inner corner 33c Circular hole 34 Rear end portion 35 Mounting bolt 36 Step portion 40 Chuck holder 41 Mounted portion 50 Lathe chuck device 60 Ring-shaped chuck device 60 work

Claims (3)

装着された際に内側となる先端側から後端側へ階段状に高くなるように段部が形成されたスクロールチャック装置用の逆爪に取り付けられて使用されるスクロールチャック用の生爪であって、
裏面側に、前記逆爪に被された状態に固定されるように、該逆爪の前記段部にフィットする溝穴状に形成された階段状の溝穴部を備え、後端部に、前記階段状の溝穴部に臨み、前記逆爪の後端面に当接して締め付けることで固定するように螺合された取付用ボルトを備えることを特徴とするスクロールチャック用の生爪。
A raw claw for a scroll chuck that is used by being attached to a reverse claw for a scroll chuck device having a stepped portion formed so as to rise stepwise from the front end side to the rear end side when mounted. ,
On the back side, it is provided with a stepped slot formed in the shape of a slot that fits the stepped portion of the reverse claw so that it is fixed in a state covered with the reverse claw, and at the rear end, A raw nail for a scroll chuck, comprising a mounting bolt that faces the stepped slot and is screwed so as to be fixed by coming into contact with and tightening a rear end surface of the reverse claw.
前記逆爪の段部のうちの少なくとも後端側の段部が、基本形状として四角形に設けられると共に、該段部の段差を作る起立した内側の面が、円柱状のワークの外周面に当接して把持するための円弧状の凹面に設けられたものであり、
前記後端側の段部に外嵌するように設けられた前記階段状の溝穴部の後端側が、表裏方向に貫通した基本形状として四角形の貫通溝穴部であって、該貫通溝穴部の少なくとも先端側の両脇内角部が、前記円弧状の凹面の両脇角部が進入された状態で固定されるように、円形の貫通孔によって拡張されていることを特徴とする請求項1記載のスクロールチャック用の生爪。
At least the stepped portion on the rear end side of the stepped portion of the reverse claw is provided in a quadrangular shape as a basic shape, and the upright inner surface that forms the stepped portion of the stepped portion contacts the outer peripheral surface of the cylindrical workpiece. It is provided on an arcuate concave surface for contact and gripping,
The rear end side of the step-like groove hole portion provided so as to be fitted to the step portion on the rear end side is a rectangular through groove hole portion as a basic shape penetrating in the front and back direction, and the through groove hole The both side internal corners on at least the tip side of the part are expanded by a circular through-hole so as to be fixed in a state where both side corners of the arcuate concave surface are inserted. A raw nail for a scroll chuck according to 1.
請求項1又は2記載のスクロールチャック用の生爪が装着されたスクロールチャック装置を、被装着部が裏面側に延設されたチャックホルダーの表面側に固定されることで構成されることを特徴とするチャック装置。   3. A scroll chuck device having the raw nail for a scroll chuck according to claim 1 or 2 mounted thereon, wherein the mounted portion is fixed to the front surface side of a chuck holder extended on the back surface side. Chucking device.
JP2017055294A 2016-10-05 2017-03-22 Raw claw and chuck device for scroll chuck Active JP6630307B2 (en)

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