JPH1177413A - Bellows-like holder - Google Patents
Bellows-like holderInfo
- Publication number
- JPH1177413A JPH1177413A JP25770197A JP25770197A JPH1177413A JP H1177413 A JPH1177413 A JP H1177413A JP 25770197 A JP25770197 A JP 25770197A JP 25770197 A JP25770197 A JP 25770197A JP H1177413 A JPH1177413 A JP H1177413A
- Authority
- JP
- Japan
- Prior art keywords
- bellows
- holder
- tool
- axial direction
- view
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002826 coolant Substances 0.000 claims description 12
- 230000002093 peripheral effect Effects 0.000 claims description 12
- 238000000034 method Methods 0.000 description 3
- 239000003507 refrigerant Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
Landscapes
- Auxiliary Devices For Machine Tools (AREA)
- Gripping On Spindles (AREA)
Abstract
Description
【０００１】[0001]
【発明の属する技術分野】本発明は、工具などを保持す
る蛇腹状保持具に関する。より、詳しくは、軸方向に縮
小されて半径方向に膨張した蛇腹状保持具の内周面又は
外周面で、工具などを押圧して保持する蛇腹状保持具に
関する。The present invention relates to a bellows-like holder for holding a tool or the like. More specifically, the present invention relates to a bellows-like holder that presses and holds a tool or the like on the inner or outer peripheral surface of the bellows-like holder that has been reduced in the axial direction and expanded in the radial direction.
【０００２】[0002]
【従来の技術】工作機械において利用する工具チャック
に工具を固定する場合など、図１２に示すような技術が
知られている。即ち、環状基準部位としての、工具チャ
ック１３０の段付け面１３１に隣接配置された蛇腹状保
持具１３２に、固定すべき工具１３３を挿入し、蛇腹状
保持具１３２の外周面に覆い被せられたつば付き締め付
け筒１３４を軸方向、前記段付き面１３１側に移動させ
て、蛇腹状保持具１３２を半径方向内側に膨張させて、
その蛇腹状保持具１３２と、工具１３３とを押圧接触さ
せて、工具１３３を固定する技術が知られている。ま
た、図１３に示すように、水などの冷媒を通す溝１３５
を、蛇腹状保持具１３２に設けたものも知られている。2. Description of the Related Art A technique as shown in FIG. 12 is known for fixing a tool to a tool chuck used in a machine tool. That is, the tool 133 to be fixed is inserted into the bellows-like holder 132 disposed adjacent to the stepped surface 131 of the tool chuck 130 as an annular reference portion, and the outer periphery of the bellows-like holder 132 is covered. By moving the flanged tightening cylinder 134 in the axial direction to the stepped surface 131 side, the bellows-like holder 132 is expanded radially inward,
A technique for fixing the tool 133 by pressing the bellows-like holder 132 and the tool 133 in contact is known. Further, as shown in FIG. 13, a groove 135 through which a coolant such as water passes.
Provided on the bellows-like holder 132 is also known.
【０００３】更に、固定すべき筒状工具の内部孔に、蛇
腹状保持具の外周面を挿入し、蛇腹状保持具の内部孔に
配置したつば付き環を軸方向、工具チャック側に移動さ
せて、蛇腹状保持具を半径方向外側方向に膨張させて、
工具を固定する技術も知られている。Further, the outer peripheral surface of the bellows-like holder is inserted into the inner hole of the cylindrical tool to be fixed, and the collar with the collar disposed in the inner hole of the bellows-like holder is moved in the axial direction toward the tool chuck. To expand the bellows-like holder in the radially outward direction,
Techniques for fixing tools are also known.
【０００４】[0004]
【発明が解決しようとする課題】しかしながら、蛇腹状
保持具を軸方向に押す力に対して、当該保持具が半径方
向に膨張して生ずる力は相対的に弱かった。従って、工
具などの、固定すべき部材を充分な力で固定できないこ
とがあった。However, the force generated when the holder is expanded in the radial direction is relatively weaker than the force pressing the bellows-like holder in the axial direction. Therefore, a member to be fixed such as a tool may not be fixed with a sufficient force.
【０００５】本発明は上記の問題点に鑑みなされたもの
であり、その目的は、蛇腹状保持具を軸方向に押す力に
対する、当該保持具が半径方向に膨張して生ずる力を相
対的に高め、かくして、工具などの被保持部材を、充分
な力で保持可能な蛇腹状保持具を提供することにある。SUMMARY OF THE INVENTION The present invention has been made in view of the above problems, and has as its object to relatively reduce the force generated by radial expansion of a bellows-like holder with respect to the force pressing the bellows-like holder in the axial direction. Accordingly, it is an object of the present invention to provide a bellows-like holder capable of holding a held member such as a tool with a sufficient force.
【０００６】[0006]
【課題を解決するための手段】上記の目的を達成する本
発明の蛇腹状保持具は、被保持部材で覆い被せられる外
周面又は被保持部材が挿入される内部孔を有し、一端面
が、環状基準体又は環状基準部位に当接され、他端面が
つば部を有する管状部材であって、軸方向に向けて前記
一端面側に押圧されて、半径方向に膨張して、前記被保
持部材を保持固定する蛇腹状保持具であって、その周面
には、上記押圧時に半径方向の膨張を容易化する為に、
上記管状部材の軸方向の全長よりも短かい範囲内で、軸
方向に伸びるすり割りが設けられている蛇腹状保持具で
ある。A bellows-like holder according to the present invention for achieving the above object has an outer peripheral surface covered with a member to be held or an internal hole into which a member to be held is inserted, and one end surface thereof. A tubular member that is in contact with an annular reference body or an annular reference portion and has a flange at the other end surface, is pressed toward the one end surface in the axial direction, expands in the radial direction, and A bellows-shaped holder for holding and fixing a member, on the peripheral surface thereof, in order to facilitate radial expansion at the time of the pressing,
A bellows-like holder provided with a slit extending in the axial direction within a range shorter than the entire length of the tubular member in the axial direction.
【０００７】本発明の蛇腹状保持具は、すり割り（当該
保持具の外周面から、内周面に繋がるスリット）が存在
するので、比較的小さい軸方向の圧縮力により、半径方
向に充分拡がることができる。それ故、従来と同一の軸
方向からの圧縮力で、従来よりも半径方向に大きな力を
発揮することができ、被保持部材に対する保持力が向上
する。なお、すり割りは、上記管状部材の軸方向の全長
よりも短かく、前記両端面の少なくとも一方は、周囲が
連結しており、又は、中間部の周囲が連結しているとよ
い。またすり割りは、蛇腹状保持具の外周面に、周方向
に等角度をおいて、複数設けるのが、保持力の均等性を
保つためには好ましい。[0007] The bellows-like holder of the present invention has a slit (a slit extending from the outer peripheral surface to the inner peripheral surface of the holder), so that it is sufficiently expanded in the radial direction by a relatively small axial compressive force. be able to. Therefore, the same compressive force in the axial direction as that of the related art can exert a larger force in the radial direction than in the related art, and the holding force on the held member is improved. The slit may be shorter than the entire length of the tubular member in the axial direction, and at least one of the two end faces may be connected at the periphery or may be connected at the periphery of the intermediate portion. It is preferable to provide a plurality of slits on the outer peripheral surface of the bellows-like holder at equal angles in the circumferential direction in order to maintain uniformity of the holding force.
【０００８】本発明の好ましい一つの態様は、前記すり
割りが、蛇腹状保持具軸方向中央から、前記一端面に伸
び、該すり割りから、前記他端面に伸びる冷媒噴出孔が
設けられている前記蛇腹状保持具である。この態様で
は、すり割りを介して、冷媒噴出孔から、工具のような
被保持部材又はそれが加工するワークに、冷媒をかける
ことができる。In a preferred aspect of the present invention, the slit extends from the center in the axial direction of the bellows-like holder to the one end face, and a coolant ejection hole extending from the slit to the other end face is provided. This is the bellows-like holder. In this aspect, the coolant can be applied to the held member such as a tool or the work to be processed by the coolant from the coolant outlet through the slit.
【０００９】[0009]
【発明の実施の形態】以下、図面を参照しつつ本発明の
実施の形態を説明する、図１（Ａ）は、本発明の蛇腹状
保持具の一例の正面図、図１（Ｂ）は、この蛇腹状膨張
体のＩ−Ｉ断面図、図２は、上記蛇腹状保持具を利用し
て、工具を工具チャックに固定しようとしている状態
（工具クランプ前の状態）を示す断面図、図３は、工具
を工具チャックに固定した状態を示す断面図である。DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 (A) is a front view of an example of a bellows-like holder of the present invention, and FIG. FIG. 2 is a cross-sectional view showing a state in which a tool is to be fixed to a tool chuck by using the bellows-like holder (a state before tool clamping), and FIG. FIG. 3 is a sectional view showing a state where the tool is fixed to the tool chuck.
【００１０】図１〜３に示されるように、上記蛇腹状保
持具１０は、厚肉部10Aと、薄肉部10Bとが蛇腹状に連続
しており、その軸方向中央部に、軸方向に伸びる幅が
０．５〜２ｍｍ位のすり割り１２が設けられている。即
ち、当該保持具１０の両端面１４、１６には到達しない
すり割り１２が設けられている。複数のすり割り１２
は、実質同一のものが、周方向に３、４等分、例えば１
２０度の角度をあけて、３箇所に存在する。As shown in FIGS. 1 to 3, the bellows-shaped holder 10 has a thick portion 10A and a thin portion 10B which are continuous in a bellows shape, and has a central portion in the axial direction and an axial center portion. A slot 12 having an extending width of about 0.5 to 2 mm is provided. That is, the slit 12 which does not reach both end surfaces 14 and 16 of the holder 10 is provided. Multiple slits 12
Are substantially the same, but are equally divided into three and four in the circumferential direction, for example, 1
It exists at three places with an angle of 20 degrees.
【００１１】この蛇腹状保持具１０を、図２に示すよう
に、筒状工具チャック２０の、段付き部２２を有する内
部孔２４に、挿入する。その段付き部２２に、蛇腹状保
持具１０を押し当て、蛇腹状保持具１０の一方の端面１
４の位置を固定する。この際、蛇腹状保持具１０の他方
の端面１６は、工具チャック２０の先端面２６から、多
少突出した状態である。そして、工具チャック２０の先
端面２６に、止め輪３０、Ｏリング３２、及び、スラス
トベアリング３４を介して、押さえ板３６と一体化され
ている締め付け筒３８を被せる。As shown in FIG. 2, the bellows-shaped holder 10 is inserted into an internal hole 24 having a stepped portion 22 of a cylindrical tool chuck 20. The bellows-shaped holder 10 is pressed against the stepped portion 22, and one end face 1 of the bellows-shaped holder 10 is pressed.
Fix the position of 4. At this time, the other end surface 16 of the bellows-like holding tool 10 is slightly protruding from the tip end surface 26 of the tool chuck 20. Then, the fastening cylinder 38 integrated with the holding plate 36 is put on the distal end surface 26 of the tool chuck 20 via the retaining ring 30, the O-ring 32, and the thrust bearing 34.
【００１２】締め付け筒３８と蛇腹状保持具１０との内
部孔に、中心軸方向に水などの冷媒が流通可能な透孔40
Aを備える工具４０を挿入し、更に、締め付け筒３８
を、工具チャック２０に対して回転させて、矢印方向に
ねじ込んでいくと、蛇腹状保持具１０が軸方向に圧縮さ
れて半径方向に拡径し、図３に示すように、外周面１７
と、内周面１８とは夫々内部孔２４と、工具４０の外周
40Bに圧接し、工具４０をクランプした状態となる。工
具４０のクランプ前の、蛇腹状保持具１０周辺の拡大図
を図４に、工具クランプ後の同様な図を図５に示す。な
お、符号24Aは冷媒供給用の孔を示す。A through hole 40 through which a refrigerant such as water can flow in the center axis direction is formed in an inner hole of the tightening cylinder 38 and the bellows-shaped holder 10.
A tool 40 with A is inserted.
Is rotated with respect to the tool chuck 20 and screwed in the direction of the arrow, the bellows-like holder 10 is compressed in the axial direction and expands in the radial direction, and as shown in FIG.
And the inner peripheral surface 18 are the inner hole 24 and the outer periphery of the tool 40, respectively.
The tool 40 is brought into pressure contact with 40B to clamp the tool 40. FIG. 4 is an enlarged view around the bellows-shaped holder 10 before the tool 40 is clamped, and FIG. 5 is a similar view after the tool clamp. Reference numeral 24A indicates a hole for supplying a coolant.
【００１３】以上説明したように、蛇腹状保持具１０の
周方向に複数のすり割り１２が存在すると、比較的小さ
い軸方向の圧縮力により、蛇腹状保持具１０において
は、すり割１２で区分された各保持要素が隣接の保持要
素とは関係なく自由に半径方向に充分拡がることができ
る。結果として、従来と同一の軸方向の力を加えた場合
には、従来よりも半径方向に大きな力を発揮することが
でき、工具４０の保持力が向上する。As described above, when a plurality of slits 12 are present in the circumferential direction of the bellows-shaped holder 10, the bellows-shaped holder 10 is divided by the slits 12 by a relatively small axial compressive force. Each of the provided retaining elements is free to expand sufficiently in the radial direction independently of the adjacent retaining elements. As a result, when the same axial force is applied as in the conventional case, a larger force can be exerted in the radial direction than in the conventional case, and the holding force of the tool 40 is improved.
【００１４】すり割り１２は、図１に示したように、蛇
腹状保持具１０の中央部に存在させる外に図６（Ａ）の
正面図、同（Ｂ）の右側面図、図７の使用状況を示す断
面図に表されるように、蛇腹状保持具５０の軸方向中央
近辺から、位置が固定された端面５４側に伸びるように
すり割り５２は設けられても良い。また、図８（Ａ）の
正面図、同（Ｂ）の右側面図、図９の使用状況を示す断
面図に表されるように、蛇腹状保持具６０の軸方向中央
近辺から締め付け筒３８側の端面６４に伸びるようにす
り割り６２は、設けられても良い。またすり割は上記管
状部材の軸方向の全長よりも短かくする為に図１の場合
とは逆に保持具１０の軸方向の中央部を避けて、両側に
設けてもよい。なお、図１〜図５と同じ参照番号のもの
は、同じ部材を示す。As shown in FIG. 1, the slit 12 is located at the center of the bellows-like holder 10, and is also a front view in FIG. 6A, a right side view in FIG. As shown in the cross-sectional view showing the usage state, the slot 52 may be provided so as to extend from the vicinity of the center in the axial direction of the bellows-like holder 50 toward the end face 54 where the position is fixed. Also, as shown in the front view of FIG. 8A, the right side view of FIG. 8B, and the cross-sectional view showing the usage state of FIG. The slot 62 may be provided so as to extend to the side end surface 64. In addition, in order to make the slit shorter than the entire length of the tubular member in the axial direction, the slit may be provided on both sides avoiding the central portion of the holder 10 in the axial direction, contrary to the case of FIG. 1 to 5 indicate the same members.
【００１５】更に、図１０（Ａ）の正面図、同（Ｂ）の
右側面図、図１１の使用状況を示す断面図に表されるよ
うに、すり割り７２を、蛇腹状保持具７０の軸方向中央
近辺から、位置が固定された端面７４側に伸びた形態と
した上で、そのすり割り７２から、蛇腹状保持具７０の
他方の端面側に伸びる比較的小透孔の冷媒噴出孔７６を
設けても良い。この形態では、水のような冷媒をすり割
り７２を介して、冷媒噴出孔７６から、工具４０などに
かけることができる。この形態は、工具４２中央に冷媒
を流通させる流通孔が存在しない場合に、特に有効であ
る。Further, as shown in the front view of FIG. 10 (A), the right side view of FIG. 10 (B), and the sectional view of FIG. A relatively small through-hole refrigerant ejection hole extending from the vicinity of the center in the axial direction toward the fixed end face 74 and extending from the slit 72 to the other end face of the bellows-like holder 70. 76 may be provided. In this embodiment, a coolant such as water can be applied to the tool 40 or the like from the coolant ejection hole 76 via the slit 72. This form is particularly effective when there is no circulation hole for flowing the coolant in the center of the tool 42.
【００１６】以上の実施の形態では、工具などを蛇腹状
保持具の内周面で押圧して保持する例を説明したが、工
具などを蛇腹状保持具の外周面で押圧して、保持するも
のにも本発明は適用可能である。In the above embodiment, an example in which a tool or the like is pressed and held on the inner peripheral surface of the bellows-shaped holder has been described. However, a tool or the like is pressed and held on the outer peripheral surface of the bellows-shaped holder. The present invention can be applied to any object.
【００１７】[0017]
【発明の効果】以上詳細に説明したように、本発明の蛇
腹状保持具によれば、蛇腹状保持具を軸方向に押す小さ
な力によって、周面に設けるすり割の存在からして当該
保持具が半径方向に膨張しやすい。従って、半径方向へ
の大きな力を得やすく、かくして、工具などの被保持部
材を、充分な力で保持可能である。As described in detail above, according to the bellows-like holder of the present invention, the small amount of pushing force on the bellows-like holder in the axial direction causes the bellows-like holder to be held due to the presence of the slit provided on the peripheral surface. The tool tends to expand radially. Therefore, a large radial force can be easily obtained, and thus, a held member such as a tool can be held with a sufficient force.
【図１】（Ａ）は、本発明の蛇腹状保持具の一例の正面
図、（Ｂ）は、この蛇腹状膨張体のＩ−Ｉ線断面図。FIG. 1A is a front view of an example of a bellows-like holder of the present invention, and FIG. 1B is a cross-sectional view of the bellows-like expanded body taken along the line II.
【図２】 上記蛇腹状保持具を利用して、工具を工具チ
ャックに固定しようとしている状態（工具クランプ前の
状態）を示すＩＩ−ＩＩ線断面図。FIG. 2 is a cross-sectional view taken along the line II-II showing a state in which a tool is to be fixed to a tool chuck using the bellows-like holder (a state before tool clamping).
【図３】 工具を工具チャックに固定した状態を示す断
面図である。FIG. 3 is a cross-sectional view showing a state where a tool is fixed to a tool chuck.
【図４】 工具のクランプ前の、蛇腹状保持具周辺の拡
大図。FIG. 4 is an enlarged view around a bellows-like holder before the tool is clamped.
【図５】 工具クランプ後の図４と同様な拡大図。FIG. 5 is an enlarged view similar to FIG. 4 after tool clamping.
【図６】（Ａ）は、本発明の蛇腹状保持具の他の例の正
面図、（Ｂ）は、この蛇腹状膨張体の右側面図。FIG. 6A is a front view of another example of the bellows-like holder of the present invention, and FIG. 6B is a right side view of the bellows-like expansion body.
【図７】 図６に示す上記蛇腹状保持具の使用状況を示
す断面図。FIG. 7 is a cross-sectional view showing a usage state of the bellows-like holder shown in FIG.
【図８】（Ａ）は、本発明の蛇腹状保持具の他の例の正
面図、（Ｂ）は、この蛇腹状膨張体の右側面図。FIG. 8A is a front view of another example of the bellows-like holder of the present invention, and FIG. 8B is a right side view of the bellows-like expansion body.
【図９】 図８に示す蛇腹状保持具の使用状況を示す断
面図。FIG. 9 is a cross-sectional view showing a usage state of the bellows-like holder shown in FIG.
【図１０】（Ａ）は、冷媒噴出用溝を設けた本発明の蛇
腹状保持具の一例の正面図、（Ｂ）は、この蛇腹状膨張
体の右側面図。FIG. 10A is a front view of an example of a bellows-like holder of the present invention provided with a coolant ejection groove, and FIG. 10B is a right side view of the bellows-like expansion body.
【図１１】 図１０に示す蛇腹状保持具の使用状況を示
す断面図。FIG. 11 is a cross-sectional view showing a usage state of the bellows-like holder shown in FIG.
【図１２】 従来の蛇腹状保持具の一例の使用状況を示
す断面図。FIG. 12 is a cross-sectional view showing the usage of an example of a conventional bellows-like holder.
【図１３】 従来の蛇腹状保持具の他の例の使用状況を
示す断面図。FIG. 13 is a cross-sectional view showing a usage state of another example of the conventional bellows-like holder.
１０、５０、６０、７０ 蛇腹状保持具 １２、５２、６２、７２ すり割り ２０ 工具チャック ３８ 締め付け筒 ４０、４２ 工具 ７６ 冷媒噴出孔 10, 50, 60, 70 Bellows-like holder 12, 52, 62, 72 Slot 20 Tool chuck 38 Tightening cylinder 40, 42 Tool 76 Refrigerant ejection hole
Claims (2)
被保持部材が挿入される内部孔を有し、一端面が、環状
基準体又は環状基準部位に当接され、他端面がつば部を
有する管状部材であって、軸方向に向けて前記一端面側
に押圧されて、半径方向に膨張して、前記被保持部材を
保持固定する蛇腹状保持具であって、 その周面には、上記押圧時に半径方向の膨張を容易化す
る為に、上記管状部材の軸方向の全長よりも短かい範囲
内で、軸方向に伸びるすり割りが設けられている蛇腹状
保持具。An outer peripheral surface covered by a held member or an inner hole into which a held member is inserted, one end surface of which is in contact with an annular reference body or an annular reference portion, and the other end surface of which is a collar portion. A tubular member having a bellows-like holding member that is pressed toward the one end surface side in the axial direction, expands in the radial direction, and holds and fixes the held member. A bellows-like holder provided with a slot extending in the axial direction within a range shorter than the entire length in the axial direction of the tubular member so as to facilitate radial expansion at the time of pressing.
央から、前記一端面に伸び、該すり割りから、前記他端
面に伸びる冷媒噴出孔が設けられている請求項１又は２
記載の蛇腹状保持具。2. The coolant slot according to claim 1, wherein the slit extends from the center of the bellows-shaped holder in the axial direction to the one end face, and the coolant ejection hole extends from the slit to the other end face.
The bellows-shaped holder as described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25770197A JPH1177413A (en) | 1997-09-05 | 1997-09-05 | Bellows-like holder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP25770197A JPH1177413A (en) | 1997-09-05 | 1997-09-05 | Bellows-like holder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH1177413A true JPH1177413A (en) | 1999-03-23 |
Family
ID=17309921
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP25770197A Pending JPH1177413A (en) | 1997-09-05 | 1997-09-05 | Bellows-like holder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH1177413A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1733828A1 (en) * | 2005-06-14 | 2006-12-20 | Fanuc Ltd | Tool holding structure |
| JP2008088692A (en) * | 2006-10-02 | 2008-04-17 | Kumagai Gumi Co Ltd | Vibration damping member for damping vibration of handrail element, handrail unit having the element, and method of damping vibration by using the vibration damping member |
| JP2014172142A (en) * | 2013-03-12 | 2014-09-22 | Aruku Seigiken:Kk | Positioning tool, machine tool with chuck device including the same, inspection unit with chuck device including the same, and deformable member used therefor |
| JP2019136831A (en) * | 2018-02-13 | 2019-08-22 | エヌティーツール株式会社 | Holding device |
-
1997
- 1997-09-05 JP JP25770197A patent/JPH1177413A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1733828A1 (en) * | 2005-06-14 | 2006-12-20 | Fanuc Ltd | Tool holding structure |
| JP2008088692A (en) * | 2006-10-02 | 2008-04-17 | Kumagai Gumi Co Ltd | Vibration damping member for damping vibration of handrail element, handrail unit having the element, and method of damping vibration by using the vibration damping member |
| JP2014172142A (en) * | 2013-03-12 | 2014-09-22 | Aruku Seigiken:Kk | Positioning tool, machine tool with chuck device including the same, inspection unit with chuck device including the same, and deformable member used therefor |
| JP2019136831A (en) * | 2018-02-13 | 2019-08-22 | エヌティーツール株式会社 | Holding device |
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