JP5527725B2 - Centering device for cylindrical workpiece - Google Patents

Centering device for cylindrical workpiece Download PDF

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JP5527725B2
JP5527725B2 JP2010095573A JP2010095573A JP5527725B2 JP 5527725 B2 JP5527725 B2 JP 5527725B2 JP 2010095573 A JP2010095573 A JP 2010095573A JP 2010095573 A JP2010095573 A JP 2010095573A JP 5527725 B2 JP5527725 B2 JP 5527725B2
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務 木下
啓之 松岡
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株式会社岡本工作機械製作所
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本発明は、円筒状工作物の外周加工面に対する円筒状ワークの回転軸（Ｃ軸）の関係を芯出しして修正する装置に関する。   The present invention relates to an apparatus for centering and correcting a relationship of a rotation axis (C axis) of a cylindrical workpiece with respect to an outer peripheral machining surface of a cylindrical workpiece.

円筒状ワークの回転軸（Ｃ軸）をクランプ装置の主軸台と芯押台とから形成される仮想ワーク把持基準軸芯（Ｋ軸）に一致させて円筒状ワークをクランプ装置で支架し、円筒状ワークを回転させながらワーク表面を研削加工して平滑表面にし、もしくは、回転刃で溝加工してスプライン軸、ロール、コーン付きスピンドル、軸受などの円筒状工作物を円筒研削加工もしくは溝加工することは行われている。   The cylindrical workpiece is supported by the clamp device so that the rotation axis (C axis) of the cylindrical workpiece coincides with the virtual workpiece gripping reference axis (K axis) formed by the spindle head and the tailstock of the clamp device. Grinding or grooving cylindrical workpieces such as spline shafts, rolls, spindles with cones, bearings, etc. by grinding the surface of the workpiece to make it smooth while rotating the workpiece, or grooving with a rotary blade Things are done.

円筒状ワークの外径や端面を研削加工するに先立ち、円筒状ワークの回転軸（Ｃ軸）をクランプ装置の主軸台と芯押台とから形成される仮想把持基準軸芯（Ｋ軸）に一致させて円筒状ワークをクランプ装置で把持させることが行われる。この円筒状ワークのＣ軸のクランプ装置のクランプ装置のＫ軸合わせの工程は、円筒研削加工中に円筒状工作物の直径を測定し研削加工終了の決定に役立つし、円筒研削加工後の円筒状工作物の真円度の測定に重要である。 Prior to grinding the outer diameter and end surface of the cylindrical workpiece, the rotation axis (C axis) of the cylindrical workpiece is used as a virtual gripping reference axis (K axis) formed by the headstock and the tailstock of the clamp device. The cylindrical workpiece is gripped by the clamping device in such a manner as to match. The process of K-axis alignment of the clamping device of the C-axis clamping device of this cylindrical workpiece is useful for determining the end of the grinding process by measuring the diameter of the cylindrical workpiece during the cylindrical grinding process. This is important for measuring the roundness of workpieces.

例えば、特開２００４−３４５０２９号公報（特許文献１）は、輪（ロール）状工作物の芯を基準軸に合わせる輪状工作物の芯出し方法であって、上記基準軸をＺ軸とするＸＹＺ空間のＸＹ平面に平行な支持面上に上記輪状工作物を載せ置く準備工程と、上記輪状工作物の外周と上記ＸＹＺ空間のＸ軸との交点の上記Ｚ軸からの偏位を計測する第１計測工程と、上記第１計測工程における計測結果に基づいて上記輪状工作物の上記支持面上での上記Ｘ軸方向の位置を調整する第１位置調整工程と、上記輪状工作物の外周と上記ＸＹＺ空間のＹ軸との交点の上記Ｚ軸からの偏位を計測する第２計測工程と、上記第２計測工程における計測結果に基づいて上記輪状工作物の上記支持面上での上記Ｙ軸方向の位置を調整する第２位置調整工程とを備えたことを特徴とする輪状工作物の自動芯出し方法を提案する。 For example, Japanese Patent Laid-Open No. 2004-345029 (Patent Document 1) is a method of centering a ring-shaped workpiece in which the core of a ring-shaped workpiece is aligned with a reference axis, and XYZ uses the reference axis as a Z-axis. A preparatory step of placing the ring-shaped workpiece on a support surface parallel to the XY plane of the space, and measuring a deviation from the Z-axis of the intersection of the outer periphery of the ring-shaped workpiece and the X-axis of the XYZ space. 1 measurement step, a first position adjustment step of adjusting the position of the ring-shaped workpiece on the support surface in the X-axis direction based on a measurement result in the first measurement step, and an outer periphery of the ring-shaped workpiece. A second measuring step of measuring a deviation from the Z axis of the intersection with the Y axis of the XYZ space, and the Y on the support surface of the annular workpiece based on a measurement result in the second measuring step. A second position adjusting step for adjusting the axial position; We propose an automatic centering process annular workpiece, characterized in that the.

前記特許文献１は、また、輪状工作物の芯を基準軸に合わせる輸状工作物の芯出し装置であって、上記基準軸をＺ軸とするＸＹＺ空間のＸＹ平面に平行で上記輪状工作物を載せ置く支持面と、上記輪状工作物の外周と上記ＸＹＺ空間のＸ軸との交点の上記Ｚ軸からの偏位を計測する第１計測手段と、上記第１計測手段における計測結果に基づいて上記輪状工作物の上記支持面上での上記Ｘ軸方向の位置を調整する第１位置調整手段と、上記輪状工作物の外周と上記ＸＹＺ空間のＹ軸との交点の上記Ｚ軸からの偏位を計測する第２計測手段と、上記第２計測手段における計測結果に基づいて上記輪状工作物の上記支持面上での上記Ｙ軸方向の位置を調整する第２位置調整手段を備えた輪状工作物の自動芯出し装置も提案する。 The above-mentioned patent document 1 is also a centering device for a transfer workpiece that aligns the core of a ring-shaped workpiece with a reference axis, and is parallel to the XY plane of the XYZ space with the reference axis as the Z-axis. A first measuring means for measuring a deviation from the Z-axis of the intersection of the outer periphery of the ring-shaped workpiece and the X-axis of the XYZ space, and a measurement result in the first measuring means. The first position adjusting means for adjusting the position of the ring-shaped workpiece on the support surface in the X-axis direction, and the intersection of the outer periphery of the ring-shaped workpiece and the Y-axis of the XYZ space from the Z-axis. Second measuring means for measuring deviation, and second position adjusting means for adjusting the position of the ring-shaped workpiece on the support surface in the Y-axis direction based on the measurement result of the second measuring means. An automatic centering device for ring-shaped workpieces is also proposed.

また、特開２００８−１４９４０９号公報（特許文献２）は、内径を加工基準として、円筒状のワークの外径や端面を研削加工する際に使用される円筒研削盤のチャック装置であって、スピンドル軸の先端部に、当該スピンドル軸に対して芯出しされて一体に装着された基準軸と、前記基準軸の外周面に対して僅かに出入り可能なように周方向に沿ってほぼ等間隔をおいて当該基準軸の半径方向に挿入され、しかも流体圧により前記半径方向に出入り可能な突出用及び後退用の各受圧面がそれぞれ形成された多数本のチャックピンと、前記各チャックピンの突出用及び後退用の各受圧面に流体圧を独立させて作用させるために、前記基準軸の内部に分離して形成された突出用及び後退用の各流体路とを備え、前記基準軸の外側にワークを挿入して、突出用流体路に供給された流体の圧力を各チャックピンの突出用受圧面に作用させて、各チャックピンを同一の突出力で基準軸外周面から突出させてワークの内周面をチャッキングすると共に、後退用流体路に供給された流体の圧力を各チャックピンの後退用受圧面に作用させて、各チャックピンを基準軸外周面から後退させてワークを取外し可能にしたことを特徴とする円筒研削盤のチャック装置を提案する。 Japanese Patent Laid-Open No. 2008-149409 (Patent Document 2) is a cylindrical grinder chuck device used when grinding an outer diameter or an end surface of a cylindrical workpiece with an inner diameter as a machining reference, A reference shaft that is centered on and integrated with the spindle shaft at the tip of the spindle shaft, and substantially equidistant along the circumferential direction so that it can slightly enter and leave the outer peripheral surface of the reference shaft. And a plurality of chuck pins each having a pressure receiving surface for protrusion and retraction that are inserted in the radial direction of the reference shaft and can be moved in and out in the radial direction by fluid pressure, and the protrusions of the chuck pins Each of the pressure receiving surfaces for retraction and retraction is provided with a fluid path for protrusion and retraction formed separately from the inside of the reference shaft so as to act independently of the fluid pressure. Insert workpiece into Then, the pressure of the fluid supplied to the projecting fluid path is applied to the projecting pressure receiving surface of each chuck pin, and each chuck pin is projected from the outer peripheral surface of the reference shaft with the same projecting force to In addition to chucking, the pressure of the fluid supplied to the retreating fluid path is applied to the retreating pressure receiving surface of each chuck pin, and each chuck pin is retreated from the outer peripheral surface of the reference shaft so that the workpiece can be removed. We propose a chuck device for a cylindrical grinder.

一方、管の外周加工面に対する管の回転軸（Ｃ軸）の関係を芯出しして修正する装置およびそれを用いて芯出しする方法も知られている。例えば、特開平７−２３７０７２号公報（特許文献３）は、図６に示す管外周加工面の芯出し装置を提案する。この芯出し装置はＮＣ加工機の刃物台に面する定盤Ｂの上に管体の加工面を逆方向に開口して仮置きし、この管体の開口面に対向して三方向（Ｘ軸、Ｙ軸、Ｚ軸）へ移動可能なレイアウトマシン１を取り付け、その中央に芯出し治具２を取り付ける。この芯出し治具２は中心から円周方向へ突出する４個のリニアゲージセンサ２１を具え、その先端にそれぞれ接触端子２８を伸縮自在に具えている。接触端子を縮めて管の内面へ進入し、延伸すると管体の内面と圧接するから、その接触圧力が各端子共均等となるようにレイアウトマシンの三元運動を行ない、各点一致すればそのまま管内へ進入して再び不均等となれば、均等となるように管軸を調整する。 On the other hand, an apparatus for centering and correcting the relationship of the rotation axis (C axis) of the tube with respect to the outer peripheral machining surface of the tube and a method of centering using the device are also known. For example, Japanese Patent Laid-Open No. 7-237072 (Patent Document 3) proposes a centering device for a pipe outer peripheral surface shown in FIG. This centering device temporarily places the machined surface of the pipe on the surface plate B facing the tool rest of the NC machine with the opposite direction opened, and faces the open surface of the pipe in three directions (X (Axis, Y axis, Z axis) is attached, and a centering jig 2 is attached at the center. The centering jig 2 includes four linear gauge sensors 21 projecting in the circumferential direction from the center, and includes contact terminals 28 that are extendable at their tips. The contact terminal is shrunk and enters the inner surface of the tube, and when it is stretched, it presses against the inner surface of the tube body, so the three-way movement of the layout machine is performed so that the contact pressure is the same for each terminal. If it enters the pipe and becomes non-uniform again, the pipe axis is adjusted so that it becomes equal.

上記特許文献３に記載のレリーズスイッチ（押下げボタン）を押して若しくは押し戻して接触端子を伸縮させリニアゲージセンサで接触端子の接触圧力を読み取る芯出し方法は、ＣＰＵによりレリーズスイッチを押して接触端子を伸ばせリニアゲージセンサで接触端子の接触圧力を読み取りその値を電子信号に変えてＣＰＵに送信し、電子信号値を基に自動焦点カメラのレンズ芯出し、自動車のクラッチレリーズフォークの芯出し、自動車のミッションレリーズ軸受の芯出しを行う他分野でも利用されている。 The centering method of reading the contact pressure of the contact terminal with a linear gauge sensor by pressing or releasing the release switch (push button) described in Patent Document 3 and reading the contact pressure of the contact terminal with the linear gauge sensor extends the contact terminal by pressing the release switch with the CPU. The contact pressure of the contact terminal is read with a linear gauge sensor, and the value is converted to an electronic signal and sent to the CPU. Based on the electronic signal value, the lens of the autofocus camera is centered, the center of the clutch release fork of the vehicle is set, It is also used in other fields for centering release bearings.

特開２００７−６１９７４号公報（特許文献４）は、ロール状ワークピースの軸芯の両端をベッド上に設けられた主軸台と心押台で水平方向に支持し、工作ツールでロール状ワークピースの半径方向に切り込みをかけながらロール状ワークピースの軸心に平行な方向に工作ツールを移動させてロー外表面を機械加工するロール加工機械において、半円筒状気体室凹部を有する半円筒状裏金と、この半円筒状裏金の内側に接合層を介して一体にされた半円筒状多孔質焼結金属層を設けることにより気体室を有する軸受本体を構成し、前記気体室に通じる気体供給ノズルを半円筒状裏金の円弧状外面側に具備させ、前記気体供給ノズルに気体を供給することにより前記多孔質焼結金属層の粒界に気体を供給できる構造の半円筒状静圧気体軸受を、前記ロール状ワークピースの下面側にロール状ワークピースの軸心と半円筒状静圧気体軸受の半円中心軸が一致するように設け、ロール状ワークピースの機械加工中に半円筒状静圧気体軸受の気体室に気体を供給してロール状ワークピースを半円筒状静圧気体軸受の多孔質焼結金属層凹面に非接触で支持可能としたロール加工機械のロール支持機構を提案する。この特許文献４のロール支持機構は、前記特許文献１および特許文献２記載のワークのＣ軸とクランプ機構のＫ軸を芯出しして一致させても長尺ワークの撓みによりワークのＣ軸芯とクランプ機構のＫ軸芯が一致しない部分があるためその部分をロール支持機構から噴き出す圧空により補正するものである。 Japanese Unexamined Patent Publication No. 2007-61974 (Patent Document 4) supports both ends of an axis of a roll-shaped workpiece in a horizontal direction by a headstock and a tailstock provided on a bed, and a roll-shaped workpiece by a machine tool. A semi-cylindrical backing metal having a semi-cylindrical gas chamber recess in a roll processing machine for machining the outer surface of a row by moving a machine tool in a direction parallel to the axis of the roll-shaped workpiece while cutting in a radial direction And a gas supply nozzle that forms a bearing body having a gas chamber by providing a semi-cylindrical porous sintered metal layer integrated through a bonding layer inside the semi-cylindrical backing metal, and communicates with the gas chamber A semi-cylindrical static pressure gas bearing having a structure capable of supplying gas to the grain boundary of the porous sintered metal layer by supplying gas to the gas supply nozzle. , It is provided on the lower surface side of the roll-shaped workpiece so that the axis of the roll-shaped workpiece and the semi-circular center axis of the semi-cylindrical static pressure gas bearing coincide with each other. A roll support mechanism of a roll processing machine is proposed in which gas is supplied to the gas chamber of the gas bearing so that the roll workpiece can be supported in a non-contact manner on the concave surface of the porous sintered metal layer of the semi-cylindrical static pressure gas bearing. The roll support mechanism of Patent Document 4 is such that even if the C axis of the workpiece described in Patent Document 1 and Patent Document 2 and the K axis of the clamp mechanism are centered and matched, the C axis core of the workpiece is caused by bending of the long workpiece. Since there is a portion where the K-axis core of the clamp mechanism does not match, this portion is corrected by the compressed air ejected from the roll support mechanism.

特開２００４−３４５０２９号公報JP 2004-345029 A 特開２００８−１４９４０９号公報JP 2008-149409 A 特開平７−２３７０７２号公報Japanese Patent Laid-Open No. 7-237072 特開平７−２３７０７２号公報Japanese Patent Laid-Open No. 7-237072

本発明者らは、前記特許文献３に記載の管外周加工面の芯出し装置を円筒研削装置に用いることができるように改造した。すなわち、芯出し装置を円筒研削装置の機枠上に三方向（Ｘ軸、Ｙ軸、Ｚ軸）へ移動可能とするとともに、クランプ装置に支架される円筒状ワークのＣ軸に対し円筒状ワーク直径方向を挟むように伸縮自在な接触端子の一対と、この直径に対して直角にかつ直径を二分する１個の伸縮自在な接触端子を芯出し治具に取り付け、前記３個の伸縮自在な接触端子を備えるダイヤルゲージで接触端子が円筒状ワークと接点位置の接触圧力が各接触端子共均等となるなら芯出し装置の芯出し治具を円筒状ワークのＣ軸に平行に移動させ、不均等となれば均等となるように円筒状ワークのＣ軸を調整して再び芯出し治具を円筒状ワークのＣ軸に平行に移動させ、芯出し作業が終了したら芯出し装置の芯出し治具をワーク作業ステージ外へ回転移動させて待機位置へ戻すことができる構造とした。 The inventors modified the pipe outer peripheral surface centering device described in Patent Document 3 so that it can be used in a cylindrical grinding device. In other words, the centering device can be moved in three directions (X axis, Y axis, Z axis) on the machine frame of the cylindrical grinding device, and the cylindrical workpiece with respect to the C axis of the cylindrical workpiece supported by the clamping device. A pair of contact terminals that are stretchable so as to sandwich the diameter direction, and one stretchable contact terminal that is perpendicular to the diameter and bisects the diameter are attached to a centering jig, and the three stretchable contact terminals are attached. If the contact pressure of a dial gauge with contact terminals is equal to the contact pressure of the cylindrical workpiece and the contact position, the centering jig of the centering device is moved in parallel with the C axis of the cylindrical workpiece. Adjust the C-axis of the cylindrical workpiece so that it becomes equal, and move the centering jig again in parallel with the C-axis of the cylindrical workpiece. Rotate and move the tool out of the work work stage It has a structure that can be returned to the aircraft position.

請求項１の発明は、主軸台と芯押台とからなるクランプ装置を搭載するワークテーブルのクランプ軸芯（仮想ワーク把持基準軸芯）に対して左右方向（Ｘ軸方向）および前後方向（Ｚ軸方向）に移動可能な測定テーブル上に芯出し装置の芯出し治具を支持するアームを旋回して前記クランプ軸芯上方に移動可能とする回転軸を備えるレイアウトマシン台を備える円筒状工作物の芯出し装置であって、クランプ装置に支架される円筒状ワークのＣ軸に対し円筒状ワーク直径方向を挟むように伸縮自在な接触端子の一対と、この直径に対して直角にかつ直径を二分する１個の伸縮自在な接触端子を半円弧状の芯出し治具に取り付け、前記３個の伸縮自在な接触端子をレリーズ機構から供排出される流体（油圧、圧空）またはテンションワイヤーあるいは電動手段により接触端子を前進させて円筒状工作物外周に接した接触端子接点位置の各接触圧力をダイヤルゲージで表示させ、これら３個の接触端子の接触圧力が３個共均等となるなら芯出し装置の芯出し治具をそのまま円筒状ワークのＣ軸に平行に移動させ、不均等となれば各接触端子の接触圧力が３個共均等となるように円筒状ワークのＣ軸を調整して再び芯出し治具を円筒状ワークのＣ軸に平行に移動させ、この芯出し作業が終了したら芯出し装置の芯出し治具をワーク作業ステージ外へ回転移動させて待機位置へ戻すことができる構造の円筒状工作物の芯出し装置にある。 According to the first aspect of the present invention, the horizontal axis (X-axis direction) and the front-back direction (Z A cylindrical workpiece having a layout machine table provided with a rotary shaft that can be moved above the clamp shaft by turning an arm that supports a centering jig of a centering device on a measurement table that is movable in the axial direction) A pair of contact terminals that are extendable so as to sandwich the cylindrical workpiece diameter direction with respect to the C-axis of the cylindrical workpiece supported by the clamp device, and a diameter perpendicular to the diameter One elastic contact terminal that bisects is attached to a semi-arc-shaped centering jig, and the three elastic contact terminals are provided with fluid (hydraulic pressure, pneumatic pressure) or tension wire discharged from the release mechanism. Alternatively, the contact terminal is moved forward by electric means to display each contact pressure at the contact terminal contact position in contact with the outer periphery of the cylindrical workpiece with a dial gauge, and the contact pressures of these three contact terminals are all equal. Then, the centering jig of the centering device is moved as it is in parallel to the C axis of the cylindrical workpiece, and if it becomes uneven, the C axis of the cylindrical workpiece is adjusted so that the contact pressures of the three contact terminals are all equal. Adjust and move the centering jig again parallel to the C-axis of the cylindrical workpiece. When this centering operation is completed, rotate the centering jig of the centering device out of the workpiece work stage and return it to the standby position. It is in a centering device for a cylindrical workpiece of a structure that can be used.

円筒工作物の外周加工面と円筒工作物のＣ軸線上との変動を円筒状工作物の芯出し装置により正確な姿勢に修正し、ある長さに亘る円筒状工作物の外周機械加工を正確に行うことができる。   Corrects the fluctuation of the cylindrical workpiece's outer peripheral machining surface and the cylindrical workpiece's C-axis to the correct posture by the cylindrical workpiece's centering device, and accurately corrects the peripheral machining of the cylindrical workpiece over a certain length Can be done.

図１はワーク加工時の円筒状工作物の芯出し装置の左側面図である。FIG. 1 is a left side view of a centering device for a cylindrical workpiece during workpiece machining. 図２はワーク測定時の円筒状工作物の芯出し装置の左側面図である。FIG. 2 is a left side view of the centering device for the cylindrical workpiece during workpiece measurement. 図３は芯出し装置の正面図である。FIG. 3 is a front view of the centering device. 図４は図３でＡ−Ａ切り取り線での芯出し装置の切断面図である。4 is a cross-sectional view of the centering device taken along the line AA in FIG. 図５は図３でＡ−Ａ切り取り線での芯出し装置の側面図である。FIG. 5 is a side view of the centering device taken along the line AA in FIG. 図６は管外周芯出し装置を備える管外周加工装置の側面図を示す。（公知）FIG. 6 shows a side view of a tube outer periphery processing device provided with a tube outer periphery centering device. (Known)

以下、図を用いて本発明の円筒状工作物の芯出し装置をさらに詳細に説明する。
図１および図２に示す円筒状工作物の芯出し装置１００において、ｗは直径１００ｍｍの円筒状ワーク、２１は機枠２０の上面に設けられたＶ−平案内面を備えるガイドウエイ、２２はこのガイドウエイ上を左右方向（Ｘ軸方向）に滑走可能なワークテーブルで、図示されていないが円筒状ワークをその軸芯（Ｃ軸）廻りに回転する主軸台と芯押台よりなるクランプ装置を搭載する。 The cylindrical workpiece centering device of the present invention will be described below in more detail with reference to the drawings.
1 and 2, w is a cylindrical work having a diameter of 100 mm, 21 is a guideway having a V-flat guide surface provided on the upper surface of the machine frame 20, and 22 is a A work table capable of sliding on the guideway in the left-right direction (X-axis direction), although not shown, a clamping device comprising a headstock and a tailstock for rotating a cylindrical work around its axis (C-axis) Is installed.

上記機枠２０の正面左側には円筒状工作物の芯出し装置１００を搭載するＬ字型架台１２０が設けられ、その頭頂にレイアウトマシン支持台１２１を固定し、レイアウトマシン支持台１２１上には前後方向（Ｚ軸方向）に延びる案内レール１２２を設け、この案内レール上を２００ｍｍ距離往復滑走移動できる前後方向滑走体１２３が載せられている。前後方向滑走体１２３上には左右方向（Ｘ軸方向）に延びる案内レール１２４が設けられ、この案内レール１２４上を左右滑走測定テーブル１２５は滑走する。１２６は左右滑走測定テーブルのストッパー（係止材）である。 An L-shaped gantry 120 on which the cylindrical workpiece centering device 100 is mounted is provided on the left side of the front surface of the machine frame 20. A layout machine support 121 is fixed to the top of the machine frame 20. A guide rail 122 extending in the front-rear direction (Z-axis direction) is provided, and a front-rear sliding body 123 capable of reciprocating and sliding 200 mm on the guide rail is placed. A guide rail 124 extending in the left-right direction (X-axis direction) is provided on the front-rear direction sliding body 123, and the left-right sliding measurement table 125 slides on the guide rail 124. 126 is a stopper (locking material) for the left and right sliding measurement table.

前記左右滑走測定テーブル１２５上には、回転軸１２８を備えるサーボモータ１２７が据え付けられる。３回伸縮自在な接触端子Ｓ１,Ｓ２,Ｓ３は半円弧状の芯出し治具１２９に９０度間隔で取り付けられる。言い換えると、クランプ装置に支架される円筒状ワークのＣ軸に対し円筒状ワーク直径方向を挟むように伸縮自在な接触端子の一対Ｓ１,Ｓ３と、この直径に対して直角にかつ直径を二分する１個の伸縮自在な接触端子Ｓ２を半円弧状の芯出し治具に取り付ける。 A servo motor 127 having a rotating shaft 128 is installed on the left / right sliding measurement table 125. The contact terminals S 1 , S 2 , S 3 that can be expanded and contracted three times are attached to a semicircular arc centering jig 129 at intervals of 90 degrees. In other words, a pair of contact terminals S 1 and S 3 that can expand and contract so as to sandwich the diameter direction of the cylindrical workpiece with respect to the C-axis of the cylindrical workpiece supported by the clamping device, and a diameter perpendicular to this diameter. attach one retractable contact terminal S 2 which bisects the semicircular arc-shaped centering jig.

芯出し治具１２９はア−ム１３０に固定支持され、このア−ム他端は前記回転軸１２８廻りに回転自在に取り付けられている。半円弧状の芯出し治具１２９の固定フレームの半円弧状先側には取手１３１が備えられ、作業者はこの取手を前方向に引っ張ることにより半円弧状の芯出し治具１２９を待機位置へと戻し（図１参照）、この取手１３１を後ろ方向に引き戻すことにより半円弧状の芯出し治具１２９を円弧状工作物測定位置へと移動できる（図２参照）。 The centering jig 129 is fixedly supported by the arm 130, and the other end of the arm is attached to be rotatable about the rotary shaft 128. A handle 131 is provided on the semicircular arc tip side of the fixed frame of the semicircular arc centering jig 129, and the operator pulls the handle forward to bring the semicircular arc centering jig 129 into the standby position. The semicircular arc-shaped centering jig 129 can be moved to the arc-shaped workpiece measurement position by returning the handle 131 back (see FIG. 1) and back in the backward direction (see FIG. 2).

上記半円弧状の芯出し治具１２９は１個のレリーズ機構１３２を備え、このレリーズ機構１３２から供排出される流体またはテンションワイヤーにより前記３個の伸縮自在な接触端子Ｓ１，Ｓ２，Ｓ３を前進させて円筒状工作物外周に接した接触端子接点位置の各接触圧力をダイヤルゲージＤ１，Ｄ２，Ｄ３で表示させる機能を有する。 The semicircular arc-shaped centering jig 129 includes one release mechanism 132, and the three contact terminals S 1 , S 2 , S that can be expanded and contracted by the fluid discharged from the release mechanism 132 or tension wires. 3 has a function of displaying each contact pressure at the contact terminal contact position in contact with the outer periphery of the cylindrical workpiece by the dial gauges D 1 , D 2 , D 3 .

これら３個の接触端子Ｓ１，Ｓ２,Ｓ３の接触圧力が３個共均等となるなら芯出し装置の芯出し治具をそのまま円筒状ワークのＣ軸に平行に移動させ、不均等となれば各接触端子の接触圧力が３個共均等となるように円筒状ワークのＣ軸を調整して再び芯出し治具を円筒状ワークのＣ軸に平行に移動させ、この芯出し作業が終了したら芯出し装置１００の芯出し治具１２９をワーク作業ステージ外へ回転移動させて待機位置へ戻す（図１参照）。 If the contact pressures of these three contact terminals S 1 , S 2 , S 3 are all equal, the centering jig of the centering device is moved in parallel to the C-axis of the cylindrical workpiece and Then, the C-axis of the cylindrical workpiece is adjusted so that the contact pressures of the three contact terminals are all equal, and the centering jig is moved again parallel to the C-axis of the cylindrical workpiece. When completed, the centering jig 129 of the centering apparatus 100 is rotated to the outside of the work work stage and returned to the standby position (see FIG. 1).

図３、図４および図５に開示されるように、３個の接触端子Ｓ１，Ｓ２,Ｓ３はネジ軸１５０を回動させて接触端子を前後方向に移動させる構造を採ってもよい。図中、１５１はゲージホルダ、１５２はネジ受け、１５３は押さえ板、１５４はナット、１５５は六角ボルト、１５６はスライドウエイ、１５７はガイドウエイ、１５８はスライドベース、１５９はガイドキィ、１６０はナールドノブ、１６１はギブ上、１６２はギブ下、１６３はナット、１６４はＨトガリである。 As shown in FIGS. 3, 4, and 5, the three contact terminals S 1 , S 2 , and S 3 may be configured to move the contact terminals in the front-rear direction by rotating the screw shaft 150. Good. In the figure, 151 is a gauge holder, 152 is a screw holder, 153 is a pressing plate, 154 is a nut, 155 is a hexagon bolt, 156 is a slide way, 157 is a guide way, 158 is a slide base, 159 is a guide key, 160 is a knurled knob, Reference numeral 161 denotes a give, 162 denotes a give, 163 denotes a nut, and 164 denotes an H toggle.

ネジ軸１５０は先端に設けた接触端子と連結しているのでネジ軸１５０は接触端子を進退させる伸縮機能を具え、レリーズ機構１３２を効かせる（レリーズ押しボタン１３２ａを押し下げる）とストロークが遠心して円筒状ワークの外周面に圧接し、各接触圧力はダイヤルゲージＤ１，Ｄ２，Ｄ３に表示される。レリーズ押しボタン１３２ａの押圧を開放するとストロークは半分程度縮小し、各接触端子は遠心して円筒状ワークの外周面から離れることとなり、ダイヤルゲージＤ１，Ｄ２，Ｄ３の値は０値となる。 Since the screw shaft 150 is connected to a contact terminal provided at the tip, the screw shaft 150 has an expansion / contraction function for moving the contact terminal forward and backward, and when the release mechanism 132 is activated (the release push button 132a is pushed down), the stroke is centrifuged to form a cylinder. Each contact pressure is displayed on the dial gauges D 1 , D 2 , and D 3 . When the release push button 132a is released, the stroke is reduced by about half, each contact terminal is centrifuged and separated from the outer peripheral surface of the cylindrical workpiece, and the values of the dial gauges D 1 , D 2 , D 3 become 0 values. .

作業者は、円筒状工作物の芯出し装置１００の芯出し治具１２９に設けられた取手１３１を後ろ方向に引き戻すことにより半円弧状の芯出し治具１２９を円弧状工作物測定位置へと移動できる（図２参照）。逆に取手１３１を前方向に引っ張ることにより半円弧状の芯出し治具１２９を待機位置へと戻すことができる（図１参照）。 The operator pulls the handle 131 provided on the centering jig 129 of the centering apparatus 100 for the cylindrical workpiece back to move the semi-arc-shaped centering jig 129 to the arc-shaped workpiece measuring position. It can be moved (see FIG. 2). Conversely, by pulling the handle 131 in the forward direction, the semicircular arc-shaped centering jig 129 can be returned to the standby position (see FIG. 1).

本発明の円筒状工作物の芯出し装置１００は、円筒研削装置の作業テーブル２２上への芯出し治具１２９の出し入れが容易である。 The cylindrical workpiece centering device 100 of the present invention allows the centering jig 129 to be easily put in and out of the work table 22 of the cylindrical grinding device.

１００ 円筒状工作物の芯出し装置
ｗ 円筒状ワーク
Ｃ 円筒状ワークの軸芯
２２ ワークテーブル
１２１ レイアウトマシン支持台
１２７ サーボモータ
１２８ 回転軸
Ｓ１,Ｓ２,Ｓ３ 伸縮自在な接触端子
１２９ 半円弧状の芯出し治具
１３０ アーム
１３１ 取手
１３２ レリーズ機構
１３２ａ レリーズ押しボタン
１５０ ネジ軸 100 Cylindrical Workpiece Centering Device w Cylindrical Workpiece C Cylindrical Workpiece Shaft Core 22 Worktable 121 Layout Machine Support Stand 127 Servo Motor 128 Rotating Axis S 1 , S 2 , S 3 Stretchable Contact Terminal 129 Semicircle Arc-shaped centering jig 130 Arm 131 Handle 132 Release mechanism 132a Release push button 150 Screw shaft

Claims (1)

主軸台と芯押台とからなるクランプ装置に支架される円筒状工作物の芯出しを行う芯出し装置であって、前記クランプ装置のクランプ軸芯に対して左右方向および前後方向に移動可能な測定テーブル上に芯出し装置の芯出し治具を支持するアームを旋回して前記クランプ軸芯上方に移動可能とする回転軸を備えるレイアウトマシン台を備え、前記クランプ装置に支架される円筒状工作物のＣ軸に対し円筒状工作物直径方向を挟むように伸縮自在な接触端子の一対と、この直径に対して直角にかつ直径を二分する１個の伸縮自在な接触端子を半円弧状の芯出し治具に取り付け、前記３個の伸縮自在な接触端子を１個のレリーズ機構により前記接触端子の前進後退の伸縮を可能とし、前進により各接触端子が円筒状工作物外周に接した接触端子接点位置の各接触圧力をダイヤルゲージで表示させ、これら３個の接触端子の接触圧力が３個共均等となるなら芯出し装置の芯出し治具をそのまま円筒状ワークのＣ軸に平行に移動させ、不均等となれば各接触端子の接触圧力が３個共均等となるように円筒状ワークのＣ軸を調整して再び芯出し治具を円筒状ワークのＣ軸に平行に移動させ、この芯出し作業が終了したら芯出し装置の芯出し治具をワーク作業ステージ外へ回転移動させて待機位置へ戻すことができる構造の円筒状工作物の芯出し装置。 A centering device for centering a cylindrical workpiece supported on a clamp device comprising a headstock and a core presser, which is movable in the left-right direction and the front-rear direction with respect to the clamp shaft core of the clamp device A cylindrical machine supported on the clamp device, provided with a layout machine base having a rotary shaft that rotates on an arm for supporting a centering jig of the centering device on the measurement table and is movable above the clamp shaft core. A pair of contact terminals that can be stretched so as to sandwich the diameter of the cylindrical workpiece with respect to the C-axis of the workpiece, and one stretchable contact terminal that is perpendicular to the diameter and that bisects the diameter are formed in a semicircular shape. Attached to a centering jig, the three retractable contact terminals can be expanded and contracted by a single release mechanism, and each contact terminal is in contact with the outer periphery of the cylindrical workpiece by advancing. Terminal connection Each contact pressure at the position is displayed with a dial gauge, and if the contact pressures of these three contact terminals are all equal, the centering jig of the centering device is moved in parallel to the C axis of the cylindrical workpiece. If this is not the case, adjust the C-axis of the cylindrical workpiece so that the contact pressures of the three contact terminals are all equal, and again move the centering jig parallel to the C-axis of the cylindrical workpiece. A cylindrical workpiece centering device having a structure capable of rotating a centering jig of a centering device out of a work work stage and returning it to a standby position when the centering operation is completed.
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