JP2008302450A - Workpiece gripping device - Google Patents

Workpiece gripping device Download PDF

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Publication number
JP2008302450A
JP2008302450A JP2007150615A JP2007150615A JP2008302450A JP 2008302450 A JP2008302450 A JP 2008302450A JP 2007150615 A JP2007150615 A JP 2007150615A JP 2007150615 A JP2007150615 A JP 2007150615A JP 2008302450 A JP2008302450 A JP 2008302450A
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workpiece
gripping
gripping member
pressing
disposed
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Japanese (ja)
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Hiroshi Kojima
宏 小島
Naoto Hatake
直人 畠
Takayuki Kishi
嵩幸 岸
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Nihon Spindle Manufacturing Co Ltd
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Nihon Spindle Manufacturing Co Ltd
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Priority to JP2007150615A priority Critical patent/JP2008302450A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a workpiece gripping device securing concentricity of a central axis of a working device and a central axis of a workpiece even when there is variation on outer diameters of the cylindrical workpieces. <P>SOLUTION: This workpiece gripping device 1 is constituted of a frame body 6 by arranging a gripping member 4 to hold a half surface of the cylindrical workpiece W on it and a pressing and gripping member 3 mounted on a supporting base 7 arranged on the frame body 6 free to move by a pressing means 5. A centering mechanism 2 free to move the gripping member 4 arranged on the frame body 6 in a direction in parallel with movement of the pressing and gripping member 3 and to move a stopping position of the gripping member 4 in correspondence with the outer diameter of the cylindrical workpiece W to grip is arranged on this workpiece gripping device 1. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

本発明は、円筒状のワークを把持するワーク把持装置に関し、特に、ワークの外径にバラツキがある場合でも、加工装置の中心軸とワークの中心とを正確に一致させることのできるワーク把持装置に関するものである。   The present invention relates to a workpiece gripping device that grips a cylindrical workpiece, and in particular, a workpiece gripping device that can accurately match the center axis of a processing device with the center of the workpiece even when the outer diameter of the workpiece varies. It is about.

従来、この種のワーク把持装置として、例えば、図９〜図１１に示す、本件出願人が先に提案した絞り加工装置に使用するワーク把持装置がある（特許文献１参照）。
このワーク把持装置５０は、架体６上に円筒状のワークＷの外径に合わせた形状で、ワークＷの半面を保持する把持部材５２を配設するとともに、前記架体６に立設した支持台７に、シリンダ等を利用した押圧手段５によって摺動可能に取り付けた、前記架体６に固定した把持部材５２と対となる押圧把持部材５１とからなる。 Conventionally, as this type of workpiece gripping device, for example, there is a workpiece gripping device used in the drawing device previously proposed by the applicant of the present invention shown in FIGS. 9 to 11 (see Patent Document 1).
The work gripping device 50 is provided with a gripping member 52 that holds a half surface of the work W in a shape that matches the outer diameter of the cylindrical work W on the frame 6 and is erected on the frame 6. It consists of a pressing gripping member 51 which is slidably attached to the support base 7 by pressing means 5 using a cylinder or the like and is paired with a gripping member 52 fixed to the frame 6.

把持部材５２は、架体６上に固定される取付部５２ｂと爪部５２ａとから構成され、把持する円筒状のワークＷの外径に合わせて爪部５２ａを取り替えることができる。   The grip member 52 includes an attachment portion 52b and a claw portion 52a fixed on the frame 6, and the claw portion 52a can be replaced according to the outer diameter of the cylindrical workpiece W to be gripped.

押圧手段５によって移動する押圧把持部材５１は、Ｌ字状のガイド５１ｂと爪部５１ａとからなり、爪部５１ａは、架体６に固定した把持部材５２の爪部５２ａと同様に、円筒状のワークＷの外径に合わせて取り替え可能に構成している。
ガイド５１ｂは、１面（図例側面）を支持台７に敷設したレール９に摺動可能に取り付けるとともに、１面（図例上面）を押圧手段５と連結するようにしている。 The pressing gripping member 51 that is moved by the pressing means 5 includes an L-shaped guide 51b and a claw portion 51a, and the claw portion 51a is cylindrical like the claw portion 52a of the gripping member 52 fixed to the frame 6. It can be replaced according to the outer diameter of the workpiece W.
The guide 51b is slidably attached to one rail (side surface in the figure) on the rail 9 laid on the support base 7, and one surface (upper surface in the figure) is connected to the pressing means 5.

架体６に固定した把持部材５２の上面は、ワーク把持装置５０によって把持する円筒状のワークＷの中心とほぼ一致するもので、ワーク把持装置５０と対向して配設する絞り加工装置Ｓの主軸５３の中心軸Ｃと一致するように配設されている。   The upper surface of the gripping member 52 fixed to the gantry 6 is substantially coincident with the center of the cylindrical workpiece W gripped by the workpiece gripping device 50, and the drawing processing device S disposed opposite to the workpiece gripping device 50. It is arranged so as to coincide with the central axis C of the main shaft 53.

しかして、絞り加工に際しては、図９に示すように、レール９に沿って摺動移動する押圧把持部材５１を架体６に固定した把持部材５２から離間した位置に退避させ、円筒状のワークＷを把持部材５２に載置する。
そして、押圧手段５を作動させ、押圧把持部材５１を円筒状のワークＷを載置した把持部材５２に向かって移動させ、ワークＷを把持するようにしている（図１０〜図１１参照）。 When drawing, as shown in FIG. 9, the pressing gripping member 51 that slides and moves along the rail 9 is retracted to a position separated from the gripping member 52 fixed to the frame 6, so that the cylindrical workpiece W is placed on the gripping member 52.
Then, the pressing means 5 is operated, and the pressing gripping member 51 is moved toward the gripping member 52 on which the cylindrical workpiece W is placed so as to grip the workpiece W (see FIGS. 10 to 11).

ところで、このワーク把持装置５０は、円筒状のワークＷの外径にバラツキがある場合、絞り加工装置Ｓの主軸５３の中心軸ＣとワークＷの中心とが正確に一致せず、同芯度が確保できないという問題があった。
特開２００４−９０９３号公報 By the way, when the workpiece gripping device 50 has a variation in the outer diameter of the cylindrical workpiece W, the center axis C of the main shaft 53 of the drawing device S and the center of the workpiece W do not exactly match, and the concentricity There was a problem that could not be secured.
JP 2004-9093 A

本発明は、上記従来のワーク把持装置の有する問題点に鑑み、円筒状のワークの外径にバラツキがあるときでも加工装置の中心軸とワークの中心軸との同芯度を確保することのできるワーク把持装置を提供することを目的とする。   In view of the problems of the conventional workpiece gripping device described above, the present invention can ensure the concentricity between the central axis of the processing device and the central axis of the workpiece even when the outer diameter of the cylindrical workpiece varies. It is an object of the present invention to provide a workpiece gripping device that can be used.

上記目的を達成するため、本発明のワーク把持装置は、円筒状のワークの半面を保持する把持部材を配設した架体と、該架体に配設した支持台に押圧手段によって移動可能に取り付けた押圧把持部材とからなるワーク把持装置において、架体に配設する把持部材を押圧把持部材の動きと平行方向に移動可能とし、把持する円筒状のワークの外径に応じて把持部材の停止位置を移動させる芯出機構を配設したことを特徴とする。   In order to achieve the above object, the workpiece gripping device of the present invention can be moved by a pressing means to a frame provided with a holding member for holding a half surface of a cylindrical workpiece and a support base provided on the frame. In a workpiece gripping device comprising an attached pressing gripping member, the gripping member disposed on the frame can be moved in a direction parallel to the movement of the pressing gripping member, and the gripping member of the gripping member can be moved according to the outer diameter of the cylindrical workpiece to be gripped. A centering mechanism for moving the stop position is provided.

この場合において、芯出機構を、把持部材の底面に当接する支持部材と、該支持部材と平行に配設し、支持部材の移動方向と逆向きに移動するように支持部材と連動部材を介して取り付けられる作動部材とから構成し、前記作動部材の一端に押圧把持部材と当接する当接面を形成することができる。   In this case, the centering mechanism is disposed in parallel with the support member that contacts the bottom surface of the gripping member, and the support member and the interlocking member are interposed so as to move in the direction opposite to the moving direction of the support member. And an abutting surface that abuts the pressing gripping member at one end of the actuating member.

さらに、この場合において、連動部材を、支持部材及び作動部材に刻設したラック部と、架体に回動自在に配設したピニオンとから構成することができる。   Further, in this case, the interlocking member can be constituted by a rack portion carved in the support member and the actuating member, and a pinion rotatably arranged on the frame.

本発明のワーク把持装置によれば、架体に配設する把持部材を押圧把持部材の動きと平行方向に移動可能とし、把持する円筒状のワークの外径に応じて把持部材の停止位置を移動させる芯出機構を配設するから、円筒状のワークが所定の外径よりも小さい場合には把持部材を押圧把持部材に近づける方向に移動させ、反対に円筒状のワークが所定の外径よりも大きい場合には把持部材を押圧把持部材から遠ざける方向に移動させて加工装置の中心軸とワークの中心軸との同芯度を確保することのできるワーク把持装置を提供することができる。   According to the workpiece gripping device of the present invention, the gripping member disposed on the frame can be moved in a direction parallel to the movement of the pressing gripping member, and the stop position of the gripping member is set according to the outer diameter of the cylindrical workpiece to be gripped. Since the centering mechanism to be moved is arranged, when the cylindrical workpiece is smaller than the predetermined outer diameter, the gripping member is moved in the direction approaching the pressing gripping member, and on the contrary, the cylindrical workpiece has the predetermined outer diameter. If larger than this, it is possible to provide a workpiece gripping device that can secure the concentricity between the center axis of the processing apparatus and the center axis of the workpiece by moving the gripping member in a direction away from the pressing gripping member.

また、芯出機構を、把持部材の底面に当接する支持部材と、該支持部材と平行に配設し、支持部材の移動方向と逆向きに移動するように支持部材と連動部材を介して取り付けられる作動部材とから構成し、前記作動部材の一端に押圧把持部材と当接する当接面を形成するようにしたときは、押圧把持部材の位置と把持部材の位置とを機構的に連動して両把持部材で把持するワークの中心軸を常に一定の位置とすることができる。   In addition, the centering mechanism is disposed via the support member and the interlocking member so as to move in a direction opposite to the moving direction of the support member, arranged in parallel with the support member that contacts the bottom surface of the gripping member. When a contact surface that contacts the pressing gripping member is formed at one end of the operating member, the position of the pressing gripping member and the position of the gripping member are mechanically interlocked. The center axis of the work gripped by both gripping members can always be set at a fixed position.

さらに、連動部材を、支持部材及び作動部材に刻設したラック部と、架体に回動自在に配設したピニオンとから構成するときは、支持部材及び作動部材に対して押圧力と直角方向に生じるガタをラック部とピニオンの傾斜面によって発生する分力によって抑制することができる。   Further, when the interlocking member is composed of a rack portion engraved on the support member and the operation member and a pinion rotatably disposed on the frame, a direction perpendicular to the pressing force with respect to the support member and the operation member. Can be suppressed by the component force generated by the rack portion and the inclined surface of the pinion.

以下、本発明のワーク把持装置の実施の形態を、図面に基づいて説明する。
なお、従来装置と同様の構造については同一の符号、一連の符号を付し説明を省略する。 Embodiments of a workpiece gripping device of the present invention will be described below with reference to the drawings.
In addition, about the structure similar to a conventional apparatus, the same code | symbol and a series of code | symbol are attached | subjected, and description is abbreviate | omitted.

図１〜図４に、本発明のワーク把持装置の第１実施例を示す。
このワーク把持装置１は、円筒状のワークＷの半面を保持する把持部材４を配設した架体６と、該架体６に配設した支持台７に押圧手段５によって移動可能に取り付けた押圧把持部材３とからなり、架体６に配設する把持部材４を押圧把持部材３の動きと平行方向に移動可能とし、把持部材４の停止位置を移動させる芯出機構２を配設するようにしている。 1 to 4 show a first embodiment of a workpiece gripping apparatus according to the present invention.
This workpiece gripping device 1 is attached to a frame 6 provided with a gripping member 4 for holding a half surface of a cylindrical workpiece W, and a support base 7 provided on the frame 6 movably by a pressing means 5. The centering mechanism 2 that includes the pressing gripping member 3 and that allows the gripping member 4 disposed on the frame 6 to move in a direction parallel to the movement of the pressing gripping member 3 and moves the stop position of the gripping member 4 is disposed. I am doing so.

支持台７は、上部に取付台７ａを配設し、シリンダ等からなる押圧手段５を取り付けるとともに、押圧把持部材３の押圧手段５による移動をガイドするためのレール９を敷設するようにしている。   The support base 7 is provided with a mounting base 7a at the top, to which a pressing means 5 made of a cylinder or the like is attached, and a rail 9 for guiding the movement of the pressing gripping member 3 by the pressing means 5 is laid. .

押圧手段５によって、移動する押圧把持部材３は、爪部３ａと、Ｌ字状のガイド３ｂとから構成され、ガイド３ｂに配設したリニアガイドによって支持台７に敷設したレール９に沿って摺動移動可能に配設されている。   The pressing gripping member 3 that is moved by the pressing means 5 includes a claw portion 3a and an L-shaped guide 3b, and slides along a rail 9 laid on the support base 7 by a linear guide disposed on the guide 3b. It is arranged to be movable.

把持部材４は、押圧把持部材３と同様に、爪部４ａと、Ｌ字状のガイド４ｂとから構成され、ガイド４ｂに配設したリニアガイドによって支持台７に敷設したレール９に沿って摺動移動可能に配設されている。
架体６上に取り付けられている台座６ａの側面には、把持部材４の移動をガイドするための補助レール９ａを敷設し、ガイド４ｂから延設した補助バー４ｃに配設したリニアガイドによって摺動移動するように構成し、ワークＷを把持した後の加工時に発生する振動によってもガイド４ｂがぶれることなく、台座６ａに対して強固に固定されるようにしている。 The gripping member 4 is composed of a claw portion 4a and an L-shaped guide 4b, similar to the press gripping member 3, and slides along a rail 9 laid on the support base 7 by a linear guide disposed on the guide 4b. It is arranged to be movable.
An auxiliary rail 9a for guiding the movement of the gripping member 4 is laid on the side surface of the pedestal 6a mounted on the frame 6, and is slid by a linear guide disposed on the auxiliary bar 4c extending from the guide 4b. The guide 4b is not shaken by vibration generated during processing after gripping the workpiece W, and is firmly fixed to the base 6a.

そして、把持部材４は、芯出機構２によって、把持する円筒状のワークＷの外径に応じてその位置が移動し、加工装置の中心軸ＭとワークＷの中心軸ＷＭが一致するようにしている。   The position of the gripping member 4 is moved by the centering mechanism 2 in accordance with the outer diameter of the cylindrical workpiece W to be gripped so that the center axis M of the processing apparatus and the center axis WM of the workpiece W coincide. ing.

芯出機構２は、把持部材４の底面に当接する支持部材２１と、該支持部材２１と平行に配設し、支持部材２１の移動方向と逆向きに移動するように支持部材２１と連動部材２０を介して取り付けられる作動部材２２とから構成し、前記作動部材２２の一端に押圧把持部材３と当接する当接面２２ａを形成するようにしている。   The centering mechanism 2 is disposed in parallel with the support member 21 that abuts the bottom surface of the gripping member 4, and the support member 21 and the interlocking member are moved in the direction opposite to the moving direction of the support member 21. And an abutting surface 22 a that abuts against the pressing and gripping member 3 is formed at one end of the actuating member 22.

連動部材２０は、支持部材２１と作動部材２２とを平行かつ逆向きに作動させるように構成するものであれば、特にその構成は限定されず、本実施例においては、台座６ａ内に固定される揺動軸２３ａに揺動自在に配設した揺動レバー２３とし、揺動レバー２３は、揺動軸２３ａの中心を通って把持部材４の移動方向と平行な軸を対称軸にして受圧面２３ｂ、２３ｃを形成し、常時は付勢手段（図示省略）によって両受圧面２３ｂ、２３ｃを同一高さとなるようにしている。   The interlocking member 20 is not particularly limited as long as it is configured to operate the support member 21 and the operation member 22 in parallel and in opposite directions. In this embodiment, the interlocking member 20 is fixed in the base 6a. The swing lever 23 is swingably disposed on the swing shaft 23a. The swing lever 23 receives pressure with an axis passing through the center of the swing shaft 23a and parallel to the moving direction of the gripping member 4 as an axis of symmetry. Surfaces 23b and 23c are formed, and both pressure receiving surfaces 23b and 23c are always at the same height by biasing means (not shown).

把持部材４の底面に当接する支持部材２１と、作動部材２２とは、円柱又は立方体形状で、台座６ａに穿孔した貫通口内を摺動移動するように配設され、支持部材２１の把持部材４の底面に当接する固定面２１ａと反対側の面２１ｂが揺動レバー２３の受圧面２３ｂに、作動部材２２の押圧把持部材３と当接する当接面２２ａの反対側の面２２ｂが揺動レバー２３の受圧面２３ｃに当接するようにしている。   The support member 21 that contacts the bottom surface of the gripping member 4 and the actuating member 22 have a cylindrical or cubic shape and are disposed so as to slide and move in the through-hole drilled in the base 6a. A surface 21b opposite to the fixed surface 21a that contacts the bottom surface of the actuator member 22 is a pressure receiving surface 23b of the swing lever 23, and a surface 22b opposite to the contact surface 22a that contacts the pressing gripping member 3 of the operating member 22 is a swing lever. 23 is in contact with the pressure receiving surface 23c.

そして、押圧把持部材３に配設する当接部材３ｃは、所定サイズ（所定サイズとは「爪部のワークとの当接面に形成する円弧半径に相当するサイズ」をいう。以下同じ。）のワークＷを把持したときに、揺動レバー２３が揺動することなく作動部材２２の当接面２２ａに当接するようにガイド４ｂの端部に配設されている。   The contact member 3c disposed on the pressing and gripping member 3 has a predetermined size (the predetermined size means “a size corresponding to an arc radius formed on the contact surface of the claw portion with the workpiece”; the same applies hereinafter). When the workpiece W is gripped, the swing lever 23 is disposed at the end of the guide 4b so as to contact the contact surface 22a of the operating member 22 without swinging.

なお、押圧把持部材３及び把持部材４の爪部３ａ、４ａは、従来例と同様、把持する円筒状のワークＷの外径に合わせて取り替えることができるようにしている。   Note that the claw portions 3a and 4a of the pressing and gripping member 3 and the gripping member 4 can be replaced in accordance with the outer diameter of the cylindrical workpiece W to be gripped, as in the conventional example.

しかして、円筒状のワークＷを把持する際には、把持するワークＷの外径に応じた爪部３ａ、４ａをガイド３ｂ、４ｂに取り付け、従来例と同様、摺動移動する押圧把持部材３を架体６に配設した把持部材４から離間した位置に退避させ、円筒状のワークＷを把持部材４に載置する。
そして、押圧手段５を作動させ、押圧把持部材３の爪部３ａを円筒状のワークＷを載置した把持部材４に向かって移動させる。 Thus, when gripping the cylindrical workpiece W, the claw portions 3a and 4a corresponding to the outer diameter of the workpiece W to be gripped are attached to the guides 3b and 4b, and the pressing gripping member that slides and moves as in the conventional example. 3 is retracted to a position separated from the gripping member 4 disposed on the frame 6, and the cylindrical workpiece W is placed on the gripping member 4.
And the press means 5 is operated and the nail | claw part 3a of the press holding member 3 is moved toward the holding member 4 in which the cylindrical workpiece W was mounted.

この際、図２に示すように、ワークＷの外径が所定サイズよりも２Ｌだけ小さい場合、加工装置の中心軸Ｍに対して、ワークＷの中心軸ＷＭはＬだけ下がった位置となる。
そのため、押圧把持部材３の爪部３ａがワークＷに当接する前に、押圧把持部材３に配設した当接部材３ｃが作動部材２２の当接面２２ａに突き当たり、押圧把持部材３の押圧力によって当接面２２ａの反対側の面２２ｂが揺動レバー２３の受圧面２３ｃを図例下側に押圧し、揺動レバー２３が揺動軸２３ａを中心に図例時計回りに揺動する。 At this time, as shown in FIG. 2, when the outer diameter of the workpiece W is smaller than the predetermined size by 2L, the center axis WM of the workpiece W is lowered by L relative to the center axis M of the processing apparatus.
Therefore, before the claw portion 3a of the press gripping member 3 comes into contact with the workpiece W, the contact member 3c disposed on the press gripping member 3 hits the contact surface 22a of the operating member 22, and the pressing force of the press gripping member 3 Accordingly, the surface 22b opposite to the contact surface 22a presses the pressure receiving surface 23c of the swing lever 23 downward in the figure, and the swing lever 23 swings clockwise in the figure around the swing shaft 23a.

そして、揺動レバー２３の受圧面２３ｂが図例上側に移動することによって、支持部材２１が揺動レバー２３に伴って移動し、固定面２１ａからの押圧力によってガイド４ｂが図例上側に移動する。   Then, the pressure receiving surface 23b of the swing lever 23 moves to the upper side in the figure, so that the support member 21 moves along with the swing lever 23, and the guide 4b moves to the upper side in the figure by the pressing force from the fixed surface 21a. To do.

図２（ａ）の状態から図２（ｂ）の状態になるまでの両把持部材の移動量は、押圧把持部材３が図例下側に向かってＬ、把持部材４が図例上側に向かってＬとなり、ワークＷの中心軸ＷＭが加工装置の中心軸Ｍと一致し、把持部材４と押圧把持部材３によってワークＷは把持されることとなる。   The amount of movement of both gripping members from the state of FIG. 2A to the state of FIG. 2B is such that the pressing gripping member 3 is L toward the lower side of the example and the gripping member 4 is toward the upper side of the example. The center axis WM of the workpiece W coincides with the center axis M of the processing apparatus, and the workpiece W is gripped by the gripping member 4 and the press gripping member 3.

次に、図３に示すように、ワークＷの外径が所定サイズよりも２Ｌだけ大きい場合を説明する。   Next, as shown in FIG. 3, a case where the outer diameter of the workpiece W is larger than the predetermined size by 2L will be described.

この場合、加工装置の中心軸Ｍに対して、ワークＷの中心軸ＷＭはＬだけ上がった位置となる。
そのため、押圧把持部材３に配設した当接部材３ｃが作動部材２２の当接面２２ａに当接する前に、押圧把持部材３の爪部３ａがワークＷの周面に突き当たり、押圧把持部材３の押圧力によってワークＷ、把持部材４を介して、固定面２１ａの反対側の面２１ｂが揺動レバー２３の受圧面２３ｂを図例下側に押圧し、揺動レバー２３が揺動軸２３ａを中心に図例反時計回りに揺動する。 In this case, the center axis WM of the workpiece W is raised by L with respect to the center axis M of the machining apparatus.
Therefore, before the abutting member 3c disposed on the pressing and gripping member 3 contacts the abutting surface 22a of the actuating member 22, the claw portion 3a of the pressing and gripping member 3 hits the peripheral surface of the workpiece W, and the pressing and gripping member 3 The surface 21b opposite to the fixed surface 21a presses the pressure receiving surface 23b of the swing lever 23 downward in the figure through the workpiece W and the gripping member 4, and the swing lever 23 is moved to the swing shaft 23a. Oscillates counterclockwise in the example around the center.

そして、揺動レバー２３の受圧面２３ｃが図例上側に移動することによって、作動部材２２が揺動レバー２３に伴って図例上側に移動し、当接面２２ａが押圧把持部材３に配設した当接部材３ｃと当接する位置で押圧把持部材３が停止する。   Then, when the pressure receiving surface 23c of the swing lever 23 moves to the upper side in the figure, the operating member 22 moves to the upper side in the figure along with the swing lever 23, and the contact surface 22a is disposed on the press gripping member 3. The pressing and gripping member 3 stops at a position where it comes into contact with the contact member 3c.

この場合、図３（ａ）の状態から図３（ｂ）の状態になるまでの両把持部材の移動量は、押圧把持部材３が図例上側に向かってＬ、把持部材４が図例下側に向かってＬとなり、ワークＷの外径が所定サイズより小さい場合と同様に、ワークＷの中心軸ＷＭが加工装置の中心軸Ｍと一致し、把持部材４と押圧把持部材３によってワークＷは把持されることとなる。   In this case, the movement amount of both gripping members from the state of FIG. 3A to the state of FIG. 3B is such that the pressing gripping member 3 is L toward the upper side of the example and the gripping member 4 is at the lower side of the example. As in the case where the outer diameter of the workpiece W is smaller than the predetermined size, the center axis WM of the workpiece W coincides with the center axis M of the processing apparatus, and the workpiece W is pressed by the gripping member 4 and the pressing gripping member 3. Will be gripped.

支持部材２１は、図４に示すように、Ｌ字状の支持片２１ｃ、２１ｄとし、支持片２１ｃ、２１ｄの当接面同士をラック状に噛み合わせた形状とすることができる。   As shown in FIG. 4, the support member 21 may be L-shaped support pieces 21 c and 21 d, and the contact surfaces of the support pieces 21 c and 21 d may be in a rack shape.

これによって、支持部材２１に対して、ラックの傾斜角度に直角に働く押圧力Ｒが、押圧把持部材３及び把持部材４の移動方向と平行方向の垂直分力Ｒｙと水平分力Ｒｘとに分けられることとなり、水平分力Ｒｘによって支持片２１ｃ、２１ｄを台座６ａに穿孔した貫通口の側面に強制的に押し当てることができ、支持部材２１がガタつくことがない。   As a result, the pressing force R acting at right angles to the inclination angle of the rack with respect to the support member 21 is divided into a vertical component force Ry and a horizontal component force Rx in a direction parallel to the moving direction of the pressing gripping member 3 and the gripping member 4. Thus, the support pieces 21c and 21d can be forcibly pressed against the side surface of the through hole formed in the base 6a by the horizontal component force Rx, and the support member 21 does not rattle.

図５に、本発明のワーク把持装置の第２実施例を示す。
このワーク把持装置１は、芯出機構２の連動部材２０を、支持部材２１及び作動部材２２に刻設したラック部２５ａ、２５ｂと、架体６に回動自在に配設したピニオン２４とから構成するようにしている。 FIG. 5 shows a second embodiment of the workpiece gripping apparatus of the present invention.
The workpiece gripping device 1 includes rack portions 25a and 25b engraved on a support member 21 and an actuating member 22 and a pinion 24 rotatably disposed on the frame 6 with the interlocking member 20 of the centering mechanism 2 being engraved. I am trying to configure it.

この場合、支持部材２１及び作動部材２２は、ラック部２５ａ、２５ｂがピニオン２４から受ける押圧力又は反力によって台座６ａに穿孔した貫通口の側面に強制的に押し当てられ、押圧把持部材３及び把持部材４の移動方向に対して直角方向のガタが生じにくい構造とすることができる。   In this case, the support member 21 and the actuating member 22 are forcibly pressed against the side surface of the through hole drilled in the base 6a by the pressing force or reaction force received by the rack portions 25a, 25b from the pinion 24, and the pressing gripping member 3 and A structure in which backlash in a direction perpendicular to the moving direction of the gripping member 4 does not easily occur can be obtained.

なお、本実施例のその他の構成及び作用は、上記第１実施例と同様である。   The other configuration and operation of the present embodiment are the same as those of the first embodiment.

図６〜図８に本発明のワーク把持装置の第３実施例を示す。
このワーク把持装置１は、押圧把持部材３及び把持部材４の爪部３ａ、４ａをそれぞれ揺動爪３１、３２、４１、４２とした正面視４分割構造としたもので、それぞれの揺動爪３１、３２、４１、４２をガイド３ｂ、４ｂに配設した支持板３３、４３に揺動ピンＰを介して揺動可能に取り付けるようにしている。 6 to 8 show a third embodiment of the workpiece gripping device of the present invention.
The workpiece gripping device 1 has a four-part structure in front view in which the claw portions 3a and 4a of the pressing gripping member 3 and the gripping member 4 are swinging claws 31, 32, 41 and 42, respectively. 31, 32, 41, 42 are swingably attached to support plates 33, 43 disposed on the guides 3 b, 4 b via swing pins P.

これによって、例えばワークＷの外径が所定サイズよりも小さい場合は、ワークＷの把持の際、まず図６に示すように、ワークＷのＡ部分が揺動爪３１、３２、４１、４２と当接する（なお、第１〜第２実施例の場合は、この２箇所のみで把持することとなり、安定感に欠け、Ｂ部分ではワークＷと揺動爪３１、３２、４１、４２との間に大きな隙間が生じることとなる。）。
そして、図６に示す状態からさらに押圧把持部材３による押圧が続くと、図７に示すように、揺動爪３１、３２、４１、４２は矢符の方向に揺動し、ワークＷと４箇所のＡ部分で当接し、ワークＷを安定して把持することができる。この場合、Ｂ部分でワークＷと揺動爪３１、３２、４１、４２との間に隙間が生じるものの、その隙間は図６のＢ部分に生じる隙間よりも小さく、ワークＷと当接するＡ部分も４箇所となり安定したワーク把持を行うことができる。 Accordingly, for example, when the outer diameter of the workpiece W is smaller than a predetermined size, when the workpiece W is gripped, first, as shown in FIG. 6, the A portion of the workpiece W has the swinging claws 31, 32, 41, 42. (In the case of the first to second embodiments, the gripping is performed only at these two positions and lacks a sense of stability. Between the workpiece W and the swinging claws 31, 32, 41, 42 in the B portion. A large gap will be generated in the
Then, when the pressing by the pressing gripping member 3 continues further from the state shown in FIG. 6, the swinging claws 31, 32, 41, 42 swing in the direction of the arrows as shown in FIG. A part A is contacted, and the workpiece W can be stably held. In this case, although a gap is formed between the workpiece W and the swinging claws 31, 32, 41, and 42 in the B portion, the gap is smaller than the gap generated in the B portion in FIG. Since there are four places, stable workpiece gripping can be performed.

ワークＷの把持に際しては、第１〜第２実施例と同様に芯出機構２が作動して把持部材４が移動し、ワークＷの中心軸が加工装置の中心軸と一致する位置で把持部材４と押圧把持部材３とによってワークＷが把持されることとなる。   When gripping the workpiece W, the centering mechanism 2 is operated to move the gripping member 4 as in the first to second embodiments, and the gripping member is moved at a position where the center axis of the workpiece W coincides with the center axis of the processing apparatus. The workpiece W is gripped by 4 and the pressing gripping member 3.

次に把持するワークＷが所定サイズよりも大きい場合について説明する。
この場合、図８に示すように、揺動爪３１、３２、４１、４２は矢符の方向に揺動し、ワークＷと揺動爪３１、３２、４１、４２との間に隙間が生じるものの、それぞれの揺動爪３１、３２、４１、４２において２箇所、合計８箇所のＡ部分で当接することとなり、ワークＷを強固に把持することができる。 Next, a case where the workpiece W to be gripped is larger than a predetermined size will be described.
In this case, as shown in FIG. 8, the swinging claws 31, 32, 41, 42 swing in the direction of the arrow, and a gap is generated between the workpiece W and the swinging claws 31, 32, 41, 42. However, each of the swinging claws 31, 32, 41, 42 comes into contact with two portions, that is, a total of eight portions A, so that the workpiece W can be firmly held.

なお、本実施例のその他の構成及び作用は、上記第１〜第２実施例と同様である。   In addition, the other structure and effect | action of a present Example are the same as that of the said 1st-2nd Example.

以上、本発明のワーク把持装置について、実施例に基づいて説明したが、本発明は上記実施例に記載した構成に限定されるものではなく、例えば、摺動移動する把持部材を上下方向ではなく、押圧手段を側方に取り付けて左右方向に移動するように構成する等、その趣旨を逸脱しない範囲において適宜その構成を変更することができるものである。   As described above, the workpiece gripping device of the present invention has been described based on the embodiments. However, the present invention is not limited to the configuration described in the above embodiments. For example, the gripping member that slides and moves is not in the vertical direction. The configuration can be appropriately changed within a range not departing from the gist, such as a configuration in which the pressing means is attached to the side and moved in the left-right direction.

本発明のワーク把持装置は、加工装置の中心軸とワークの中心軸との同芯度を確保することができるという特性を有していることから、円筒状のワークの外径にバラツキがある素材の加工を行う加工装置の用途に好適に用いることができる。   Since the workpiece gripping device of the present invention has a characteristic that the concentricity between the center axis of the processing device and the center axis of the workpiece can be ensured, the outer diameter of the cylindrical workpiece varies. It can be used suitably for the use of the processing apparatus which processes a raw material.

本発明のワーク把持装置の第１実施例を示す側面図である。It is a side view which shows 1st Example of the workpiece holding apparatus of this invention. 同ワーク把持装置を使って所定サイズよりの外径の小さいワークを把持する説明図で、（ａ）は芯出機構の作動前を、（ｂ）は芯出し機構が作動してワークを把持した所を示す一部切り欠きの側面図である。It is explanatory drawing which grips the workpiece | work with an outer diameter smaller than predetermined size using the workpiece | work gripping apparatus, (a) before the operation | movement of the centering mechanism, (b) gripped the workpiece | work with the centering mechanism operating. It is a side view of the notch which shows a part. 同ワーク把持装置を使って所定サイズよりの外径の大きいワークを把持する説明図で、（ａ）は芯出機構の作動前を、（ｂ）は芯出し機構が作動してワークを把持した所を示す一部切り欠きの側面図である。It is explanatory drawing which hold | grips the workpiece | work with a larger outer diameter than predetermined size using the workpiece | work holding | grip apparatus, (a) is before the operation | movement of a centering mechanism, (b) is the centering mechanism act | operated, and gripped the workpiece | work It is a side view of the notch which shows a part. 支持部材の変形例を示す一部切り欠きの断面図で、（ａ）は全体を、（ｂ）はラック部に係る押圧力の水平分力の説明図である。It is sectional drawing of the notch which shows the modification of a supporting member, (a) is the whole, (b) is explanatory drawing of the horizontal component force of the pressing force which concerns on a rack part. 本発明のワーク把持装置の第２実施例を示す一部切り欠きの側面図である。It is a partially cutaway side view showing a second embodiment of the workpiece gripping device of the present invention. 本発明のワーク把持装置の第３実施例を示す一部切り欠きの側面図である。It is a partially cutaway side view showing a third embodiment of the workpiece gripping device of the present invention. 同ワーク把持装置で所定サイズより小さいワークを把持する際の説明図である。It is explanatory drawing at the time of holding the workpiece | work smaller than predetermined size with the workpiece | work holding apparatus. 同ワーク把持装置で所定サイズより大きなワークを把持する際の説明図である。It is explanatory drawing at the time of hold | grip a workpiece | work larger than predetermined size with the workpiece holding apparatus. 従来のワーク把持装置のワーク把持前の側面図である。It is a side view before the workpiece holding of the conventional workpiece holding device. 同把持装置のワーク把持後の側面図である。It is a side view after the workpiece | work holding | grip of the holding apparatus. 同ワーク把持装置の正面図である。It is a front view of the workpiece gripping device.

符号の説明Explanation of symbols

１ ワーク把持装置
２ 芯出機構
２０ 連動部材
２１ 支持部材
２２ 作動部材
２２ａ 当接面
２４ ピニオン
２５ａ ラック部
２５ｂ ラック部
３ 押圧把持部材
４ 把持部材
５ 押圧手段
６ 架体
７ 支持台
Ｗ ワーク DESCRIPTION OF SYMBOLS 1 Work holding apparatus 2 Centering mechanism 20 Interlocking member 21 Support member 22 Actuating member 22a Contact surface 24 Pinion 25a Rack part 25b Rack part 3 Pressing gripping member 4 Holding member 5 Pressing means 6 Frame 7 Support stand W Workpiece

Claims (3)

円筒状のワークの半面を保持する把持部材を配設した架体と、該架体に配設した支持台に押圧手段によって移動可能に取り付けた押圧把持部材とからなるワーク把持装置において、架体に配設する把持部材を押圧把持部材の動きと平行方向に移動可能とし、把持する円筒状のワークの外径に応じて把持部材の停止位置を移動させる芯出機構を配設したことを特徴とするワーク把持装置。   In a workpiece gripping device comprising a frame having a gripping member for holding a half surface of a cylindrical workpiece and a pressing gripping member movably attached to a support base disposed on the frame by pressing means. A centering mechanism is provided in which the gripping member disposed on the movable member can be moved in a direction parallel to the movement of the pressing gripping member, and the stop position of the gripping member is moved according to the outer diameter of the cylindrical workpiece to be gripped. Work gripping device. 芯出機構を、把持部材の底面に当接する支持部材と、該支持部材と平行に配設し、支持部材の移動方向と逆向きに移動するように支持部材と連動部材を介して取り付けられる作動部材とから構成し、前記作動部材の一端に押圧把持部材と当接する当接面を形成したことを特徴とする請求項１記載のワーク把持装置。   An operation in which the centering mechanism is disposed in parallel with the support member that is in contact with the bottom surface of the gripping member and is attached via the support member and the interlocking member so as to move in the direction opposite to the moving direction of the support member. The work gripping apparatus according to claim 1, wherein a contact surface that contacts the pressing gripping member is formed at one end of the operating member. 連動部材を、支持部材及び作動部材に刻設したラック部と、架体に回動自在に配設したピニオンとから構成したことを特徴とする請求項２記載のワーク把持装置。   3. The work gripping apparatus according to claim 2, wherein the interlocking member is composed of a rack portion carved in the support member and the actuating member, and a pinion rotatably disposed on the frame.
JP2007150615A 2007-06-06 2007-06-06 Workpiece gripping device Pending JP2008302450A (en)

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Cited By (8)

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WO2010061947A1 (en) 2008-11-27 2010-06-03 Ricoh Company, Ltd. Surface-emitting laser device, surface-emitting laser array, optical scanning apparatus and image forming apparatus
CN102152144A (en) * 2011-03-31 2011-08-17 潍柴动力股份有限公司 Workpiece clamping and positioning device
CN102259270A (en) * 2011-02-16 2011-11-30 苏州天风环保科技有限公司 Annular fixing frame
CN102962695A (en) * 2012-11-26 2013-03-13 安徽长青电子机械（集团）有限公司 Equipment for precisely fixing rods
CN103447854A (en) * 2013-09-02 2013-12-18 上海三一精机有限公司 Workpiece automatic centering device and processing center
CN103817550A (en) * 2014-03-13 2014-05-28 南车戚墅堰机车有限公司 Semicircle support processing equipment
CN106392930A (en) * 2016-06-30 2017-02-15 徐晓杰 Workpiece two-position clamping device
CN107984345A (en) * 2017-11-28 2018-05-04 昆山普克特金属制品有限公司 A kind of metal double-side alternating expression sander

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JPH0512054U (en) * 1991-07-31 1993-02-19 三井精機工業株式会社 Centering clamp device

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JPS6288543U (en) * 1985-11-26 1987-06-06
JPH0512054U (en) * 1991-07-31 1993-02-19 三井精機工業株式会社 Centering clamp device

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010061947A1 (en) 2008-11-27 2010-06-03 Ricoh Company, Ltd. Surface-emitting laser device, surface-emitting laser array, optical scanning apparatus and image forming apparatus
CN102259270A (en) * 2011-02-16 2011-11-30 苏州天风环保科技有限公司 Annular fixing frame
CN102152144A (en) * 2011-03-31 2011-08-17 潍柴动力股份有限公司 Workpiece clamping and positioning device
CN102962695A (en) * 2012-11-26 2013-03-13 安徽长青电子机械（集团）有限公司 Equipment for precisely fixing rods
CN103447854A (en) * 2013-09-02 2013-12-18 上海三一精机有限公司 Workpiece automatic centering device and processing center
CN103817550A (en) * 2014-03-13 2014-05-28 南车戚墅堰机车有限公司 Semicircle support processing equipment
CN106392930A (en) * 2016-06-30 2017-02-15 徐晓杰 Workpiece two-position clamping device
CN107984345A (en) * 2017-11-28 2018-05-04 昆山普克特金属制品有限公司 A kind of metal double-side alternating expression sander

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