JP2008213118A - Workpiece centering method and workpiece centering device and workpiece machining apparatus including the same - Google Patents

Workpiece centering method and workpiece centering device and workpiece machining apparatus including the same Download PDF

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JP2008213118A
JP2008213118A JP2007056651A JP2007056651A JP2008213118A JP 2008213118 A JP2008213118 A JP 2008213118A JP 2007056651 A JP2007056651 A JP 2007056651A JP 2007056651 A JP2007056651 A JP 2007056651A JP 2008213118 A JP2008213118 A JP 2008213118A
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workpiece
machining
centering
hole
tool
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Osamu Yanagimoto
治 柳本
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Farukomu Kk
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Farukomu Kk
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Abstract

<P>PROBLEM TO BE SOLVED: To enable an accurate centering of a machining hole formed on the surface of a workpiece, being not a flat surface; to perform centering while stably supporting the workpiece having a cylindrical shape; and to eliminate time loss when processing is changed form centering to machining, or from machining to centering; and to maintain production efficiency, in a workpiece centering method for centering a machining hole formed on the workpiece and a workpiece centering device and a workpiece machining apparaus including the same. <P>SOLUTION: A tool having an insertion part having the same diameter as the diameter of a machining hole is mounted on a machining main spindle, then the insertion part is inserted into and engaged with inside of the machining hole to position a workpiece on a machining main spindle standard, and the positioned workpiece is fixed thereto, with the insertion part inserted into and engaged with the inside. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

本発明は、ワークに形成された加工穴を芯出しするためのワーク芯出し方法及びワーク芯出し装置並びにそれを備えるワーク加工装置に関する。   The present invention relates to a workpiece centering method and a workpiece centering device for centering a machining hole formed in a workpiece, and a workpiece processing apparatus including the workpiece centering device.

ドリルで形成された加工穴の開口周縁部に沿って工具を移動させることで均一な面取り加工を行う場合等、ワークに形成された加工穴を正確に芯出しなければならないことがある。かかる場合におけるワークの芯出し手段として、下記のような提案が既になされている。まず、先細テーパ形状の外周面を有する芯出し冶具を加工主軸に装着するとともに、加工穴を有するワークを平面状のワークホルダー上に固定しないで載置する。次に、上記芯出し冶具を加工穴に挿入し、テーパ形状の外周面を加工穴の開口周縁部に押し当てることにより、ワークを水平方向に移動させて、加工穴を加工主軸基準で位置決めする。さらに、加工穴に芯出し冶具を残したままでワークをクランプした後、芯出し冶具を加工穴から退出させて工具に交換し、交換された工具で加工穴又は加工穴を位置基準とする部位を加工する（例えば、特許文献１参照。）。   When performing uniform chamfering by moving a tool along the opening peripheral edge of a machining hole formed by a drill, it may be necessary to accurately center the machining hole formed in the workpiece. As a work centering means in such a case, the following proposals have already been made. First, a centering jig having a tapered outer peripheral surface is mounted on a machining spindle, and a workpiece having a machining hole is placed on a planar workpiece holder without being fixed. Next, the centering jig is inserted into the machining hole, and the workpiece is moved in the horizontal direction by pressing the tapered outer peripheral surface against the peripheral edge of the machining hole, so that the machining hole is positioned with reference to the machining spindle. . Furthermore, after clamping the workpiece while leaving the centering jig in the processing hole, the centering jig is withdrawn from the processing hole and replaced with a tool. It processes (for example, refer patent document 1).

上記手段によれば、加工主軸を基準に加工穴の位置決めを行うので、ワークに対する加工穴の形成位置にズレがあっても、加工穴に対する高精度な芯出しが可能となる。また、ワークごとに加工穴を芯出しするため、ワークに対する加工穴の形成位置のズレ具合がワーク間で多少違っていても、それによる影響を受けることがない。しかも、加工主軸基準で芯出ししたワークをクランプした後、加工主軸に装着されている芯出し冶具を工具に交換して、当該工具で加工穴又は加工穴を位置基準とする部位を加工するため、ワークと工具の位置関係にズレを生じることがないという利点がある。
特開２００５−３１９５５３号公報 According to the above means, since the machining hole is positioned on the basis of the machining spindle, even if the machining hole forming position of the workpiece is misaligned, the machining hole can be accurately centered. Further, since the machining hole is centered for each workpiece, even if the displacement of the machining hole forming position with respect to the workpiece is slightly different between the workpieces, it is not affected by that. In addition, after clamping the workpiece centered on the machining spindle reference, the centering jig mounted on the machining spindle is replaced with a tool, and the machining hole or the part with the machining hole as the position reference is machined with the tool. There is an advantage that there is no deviation in the positional relationship between the workpiece and the tool.
JP 2005-319553 A

しかしながら、例えば円筒形状をしたワークの円周面等、平面でない部位に形成される加工穴の場合、その開口周縁部は三次元曲線で構成されることから、上記従来手段のようにテーパ形状の外周面を押し当てて芯出ししようとしても、テーパ面が開口周縁部に対して片当たりして正確に芯出しすることができない。また、円筒形状をしたワークの場合、平面状のワークホルダーでは、ワークが転がって姿勢が安定しない。さらに、加工主軸に装着した芯出し冶具でワークを芯出しした後、当該芯出し冶具を工具に交換するため、時間的ロスが大きい。新たなワークを処理する際も、加工主軸に装着された工具を再び芯出し冶具に交換し直す必要があり、やはり時間的ロスが大きい。   However, for example, in the case of a machined hole formed in a non-planar part, such as a circumferential surface of a cylindrical workpiece, the peripheral edge of the opening is configured with a three-dimensional curve. Even if the outer peripheral surface is pressed and centering is attempted, the tapered surface cannot be accurately centered with respect to the peripheral edge of the opening. Further, in the case of a cylindrical workpiece, the posture is not stable because the workpiece rolls with a planar workpiece holder. Furthermore, since the work is centered with a centering jig mounted on the machining spindle and then the centering jig is replaced with a tool, the time loss is large. Even when processing a new workpiece, it is necessary to replace the tool mounted on the machining spindle with a centering jig again, which also has a large time loss.

本発明は、斯かる実情に鑑み、ワークに形成された加工穴を芯出しするためのワーク芯出し方法及びワーク芯出し装置並びにそれを備えるワーク加工装置において、平面でないワーク表面に形成された加工穴の正確な芯出しを可能にすること、円筒形状をしたワークを安定的に支持しながら芯出しすること、芯出しから加工へあるいは加工から芯出しへ移行する際の時間的ロスを無くし、生産効率を維持することを目的とする。   In view of such circumstances, the present invention provides a workpiece centering method, a workpiece centering device for centering a machining hole formed in a workpiece, and a workpiece machining apparatus including the workpiece centering method, which is formed on a non-planar workpiece surface. Enabling accurate centering of holes, centering while stably supporting a cylindrical workpiece, eliminating time loss when shifting from centering to processing or from processing to centering, The purpose is to maintain production efficiency.

請求項１の発明は、ワークに形成された加工穴を芯出しするためのワーク芯出し方法において、前記加工穴径と同径の挿入部を備える工具を加工主軸に装着し、前記挿入部を前記加工穴の内部に挿入嵌合してワークを加工主軸基準で位置決めし、前記挿入部を挿入嵌合したままの状態で、位置決めされたワークを固定することを特徴とするワーク芯出し方法を提供する。   The invention of claim 1 is a work centering method for centering a machining hole formed in a workpiece, wherein a tool including an insertion portion having the same diameter as the machining hole diameter is mounted on a machining spindle, and the insertion portion is A work centering method characterized by inserting and fitting into the machining hole to position the work on the basis of a machining spindle, and fixing the positioned work while the insertion portion is inserted and fitted. provide.

請求項２の発明は、請求項１に記載のワーク芯出し方法において、ワークは、円筒形状部を備えるとともに、その円周面に前記加工穴が形成されており、前記円筒形状部は、前記挿入部が前記加工穴に挿入嵌合される際に、ワークを前記円筒形状部の筒軸方向及び円周方向に摺動可能に受止支持する受止部で受止支持されていることを特徴とするワーク芯出し方法を提供する。   The invention of claim 2 is the workpiece centering method according to claim 1, wherein the workpiece includes a cylindrical portion, and the machining hole is formed on a circumferential surface thereof, and the cylindrical portion is When the insertion portion is inserted and fitted into the processing hole, the workpiece is received and supported by a receiving portion that receives and supports the workpiece so as to be slidable in the cylindrical axis direction and the circumferential direction of the cylindrical portion. A feature centering method is provided.

請求項３の発明は、ワークに形成された加工穴を芯出しするためのワーク芯出し装置において、ワークを摺動可能に受止支持する受止部と、前記受止部に受止支持されるワークを位置ズレさせることなく固定可能な固定部と、前記加工穴径と同径の挿入部を備える工具が装着される加工主軸と、を備えてなり、前記受止部で摺動可能に受止支持されるワークの加工穴の内部に、前記挿入部を挿入嵌合し、ワークを加工主軸基準で位置決めした状態において、前記固定部でワークを固定することを特徴とするワーク芯出し装置を提供する。   According to a third aspect of the present invention, there is provided a workpiece centering device for centering a machining hole formed in a workpiece, wherein the workpiece is slidably received and supported by the receiving portion. A fixed portion that can be fixed without shifting the workpiece and a machining spindle on which a tool having an insertion portion having the same diameter as the machining hole diameter is mounted, and can be slid on the receiving portion. A workpiece centering device, wherein the workpiece is fixed by the fixing portion in a state where the insertion portion is inserted and fitted into a processing hole of a workpiece supported and supported, and the workpiece is positioned with reference to a processing spindle. I will provide a.

請求項４の発明は、請求項３に記載のワーク芯出し装置であって、ワークは円筒形状部を備えるとともに、その円周面に前記加工穴が形成されており、前記受止部は、ワークを前記円筒形状部の筒軸方向及び円周方向に摺動可能に受止支持することを特徴とするワーク芯出し装置を提供する。   Invention of Claim 4 is a workpiece | work centering apparatus of Claim 3, Comprising: While a workpiece | work is provided with the cylindrical-shaped part, the said process hole is formed in the circumferential surface, The said receiving part is Provided is a workpiece centering device characterized by receiving and supporting a workpiece so as to be slidable in a cylindrical axis direction and a circumferential direction of the cylindrical portion.

請求項５の発明は、請求項３又は４に記載のワーク芯出し装置を備えてなり、前記工具を、前記加工主軸によって、前記加工穴又は前記加工穴を位置基準とする部位の加工処理に用いることを特徴とするワーク加工装置を提供する。   A fifth aspect of the invention comprises the workpiece centering device according to the third or fourth aspect, wherein the tool is used to process the processing hole or a portion having the processing hole as a position reference by the processing spindle. Provided is a workpiece machining apparatus characterized by being used.

請求項１及び３に記載の発明によれば、以下の優れた効果を奏する。加工穴径と同径の挿入部を備える工具を加工穴の内部に挿入嵌合することでワークを位置決めするため、加工穴が平面でない部位に形成されており、その開口周縁部が三次元曲線等であるとしても、上記従来の芯出し方法のように、芯出し冶具と開口周縁部が片当たりすることなく、正確に芯出し可能となるものである。   According to invention of Claim 1 and 3, there exist the following outstanding effects. In order to position the workpiece by inserting and fitting a tool having an insertion part of the same diameter as the machining hole diameter into the machining hole, the machining hole is formed in a non-planar part, and the opening peripheral part is a three-dimensional curve Even in the case of the above, the centering jig and the opening peripheral portion do not come into contact with each other as in the conventional centering method, and the centering can be accurately performed.

請求項２及び４に記載の発明によれば、請求項１及び請求項３に記載の発明が奏する効果に加えて、以下の優れた効果を奏する。円筒形状部を備えるとともに、その円周面に加工穴が形成されるワークを、円筒形状部の筒軸方向及び円周方向に摺動可能に受止支持するため、工具挿入時におけるワーク姿勢を安定させながら、高精度な芯出しが可能となる。   According to invention of Claim 2 and 4, in addition to the effect which the invention of Claim 1 and Claim 3 has, there exists the following outstanding effects. In order to receive and support a workpiece having a cylindrical portion and having a machining hole formed in its circumferential surface so as to be slidable in the cylindrical axis direction and the circumferential direction of the cylindrical portion, the workpiece posture during tool insertion is Highly accurate centering is possible while stabilizing.

請求項５に記載の発明によれば、請求項３又は請求項４に記載の発明が奏する効果に加えて、以下の優れた効果を奏する。前記加工穴又は前記加工穴を位置基準とする部位の加工処理に用いる工具で加工穴を芯出しするため、芯出しから加工へあるいは加工から芯出しへ移行する際の時間的ロスが無く、生産効率の低下が防止される。   According to invention of Claim 5, in addition to the effect which the invention of Claim 3 or Claim 4 has, there exists the following outstanding effects. Since the processing hole is centered with the tool used for processing the position based on the processing hole or the processing hole, there is no time loss when shifting from centering to processing or from processing to centering. A reduction in efficiency is prevented.

以下、本発明の実施形態について、図面を参照しながら説明する。図１は、本実施形態に係るワーク加工装置１を示す平面図である。図２は、ワーク加工装置１に備えられるワーク芯出し装置で加工穴を芯出しされて、当該加工穴の加工処理がなされるワークＷを示す（ａ）平面図、（ｂ）正面図、及び（ｃ）側面図である。図３は、ワーク加工装置１に装着され、ワークＷの加工処理に用いられる工具Ｔを示す図で、（ｂ）は（ａ）のＡ視に該当し、（ｃ），(ｄ)は、工具ＴによるワークＷの加工処理について説明する図である。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a plan view showing a workpiece machining apparatus 1 according to the present embodiment. FIGS. 2A and 2B show a workpiece W in which a machining hole is centered by a workpiece centering device provided in the workpiece machining apparatus 1 and the machining hole is machined (a) a plan view, (b) a front view, and FIG. (C) It is a side view. FIG. 3 is a diagram showing a tool T mounted on the workpiece machining apparatus 1 and used for machining the workpiece W. (b) corresponds to the view A in (a), and (c) and (d) are It is a figure explaining the processing process of the workpiece | work W with the tool T. FIG.

ワーク加工装置１は、上流工程から順次搬送されてくる中空円筒形状のワークＷを受け入れ、ワークＷの外周面Ｗｏに形成されている内径ｄの円形の加工穴Ｗｈ１，Ｗｈ２，Ｗｈ３，Ｗｈ４について、それらの開口周縁部を面取り加工する。これらの加工穴は、回転する切削工具によって形成され、図２（ｂ）及び（ｃ）に示されるように、ワークＷの外周面Ｗｏ側から内周面Ｗｉ側へ貫通している。このうち加工穴Ｗｈ１，Ｗｈ２は、ワークＷの上面側において、中空円筒形状の筒軸方向に真直ぐ並ぶように形成され、中心間距離が所定寸法Ｘに設定されている。また、加工穴Ｗｈ３，Ｗｈ４は、加工穴Ｗｈ１，Ｗｈ２が形成される外周面Ｗｏの真裏側において、加工穴Ｗｈ１，Ｗｈ２と同様に、中心どうしが筒軸方向に所定寸法Ｘだけ離れている。 The workpiece machining apparatus 1 receives hollow cylindrical workpieces W sequentially conveyed from the upstream process, and has circular machining holes Wh 1 , Wh 2 , Wh 3 , having an inner diameter d formed on the outer peripheral surface Wo of the workpiece W. for Wh 4, chamfered their opening edge. These machining holes are formed by a rotating cutting tool and penetrate from the outer peripheral surface Wo side of the workpiece W to the inner peripheral surface Wi side as shown in FIGS. 2 (b) and 2 (c). Among these, the processing holes Wh 1 and Wh 2 are formed on the upper surface side of the workpiece W so as to be aligned straight in the direction of the cylindrical axis of the hollow cylinder, and the center distance is set to a predetermined dimension X. Further, the machining holes Wh 3 and Wh 4 have a predetermined dimension in the cylinder axis direction in the cylinder axis direction, just like the machining holes Wh 1 and Wh 2 , just behind the outer peripheral surface Wo where the machining holes Wh 1 and Wh 2 are formed. X apart.

ワーク加工装置１は、図１に示されるように、ワークＷの両端を第一チャック爪２１及び第二チャック爪３１で把持して固定する固定部としての第一チャック機構２及び第二チャック機構３と、把持したワークＷをその円周方向で上下反転させるためのワーク回転機構４と、ワークＷの把持固定が一時解除される際に上方移動して、ワークＷを受止支持するＶ字状のブロック５１を備える受止部５と、これら２〜５を水平方向（前後左右方向）に移動可能なＸ−Ｙテーブル６と、Ｘ−Ｙテーブル６の上方に、Ｘ−Ｙテーブル６の水平移動と切り離された状態で設けられて、装着された工具Ｔを回転させながら上下方向に移動可能な加工主軸７（不図示）と、を有してなる。   As shown in FIG. 1, the workpiece machining apparatus 1 includes a first chuck mechanism 2 and a second chuck mechanism as fixing portions that hold and fix both ends of a workpiece W with a first chuck claw 21 and a second chuck claw 31. 3, a workpiece rotation mechanism 4 for reversing the gripped workpiece W up and down in the circumferential direction, and a V-shape that moves upward when gripping and fixing the workpiece W is temporarily released to receive and support the workpiece W Receiving section 5 having a block 51, XY table 6 capable of moving these 2 to 5 in the horizontal direction (front and rear, left and right), and XY table 6 above XY table 6 A machining spindle 7 (not shown) provided in a state separated from the horizontal movement and movable in the vertical direction while rotating the mounted tool T is provided.

第一チャック爪２１及び第二チャック爪３１は、第一チャック機構２及び第二チャック機構３に備えられる第一スライド部２２及び第二スライド部３２によって、図１中の左右方向に前進及び後退可能とされており、ワーク加工時には、図１に一点鎖線で示されるように前進してワークＷを把持し、ワーク搬出入時及び後述するワークＷの位置決め時には、実線で示されるようにワークＷの把持を解除して後退する。また、第一チャック爪２１及び第二チャック爪３１は、ワーク回転機構４に備えられるサーボモータ４１の駆動力によって回転させられ、これにより、把持しているワークＷをその円周方向に回転させることができる。なお、サーボモータ４１の駆動力は、ワーク回転機構４に備えられる原動プーリー４２、第二チャック機構３に備えられる従動プーリー３３、及びこれらのプーリーに巻き掛けられる駆動ベルト４３を介して、第二チャック爪３１に伝導される。   The first chuck claw 21 and the second chuck claw 31 are moved forward and backward in the left-right direction in FIG. 1 by the first slide portion 22 and the second slide portion 32 provided in the first chuck mechanism 2 and the second chuck mechanism 3. When the workpiece is machined, the workpiece W moves forward as indicated by a one-dot chain line in FIG. 1 and grips the workpiece W. When the workpiece W is loaded and unloaded and when positioning the workpiece W, which will be described later, the workpiece W Release the grip and move backward. Further, the first chuck claw 21 and the second chuck claw 31 are rotated by the driving force of the servo motor 41 provided in the work rotation mechanism 4, thereby rotating the gripped work W in the circumferential direction. be able to. The driving force of the servo motor 41 is supplied via the driving pulley 42 provided in the workpiece rotating mechanism 4, the driven pulley 33 provided in the second chuck mechanism 3, and the driving belt 43 wound around these pulleys. Conducted to the chuck claw 31.

工具Ｔは、図３（ａ）及び（ｂ）に示されるように、その先端に設けられる挿入部Ｔｆが算盤玉形状の外周面Ｔ１を有する回転工具であって、挿入部Ｔｆの外径Ｄは、加工穴Ｗｈ１，Ｗｈ２，Ｗｈ３，Ｗｈ４の内径（加工穴径）ｄと同径に形成されている。外周面Ｔ１には、円周方向の複数箇所に刃部Ｔ２が設けられており、工具Ｔを装着する加工主軸７で回転させながら、各加工穴の開口周縁部に沿うように相対移動することで、刃部Ｔ２による面取り加工が行われる。具体的には、図３（ｃ）に示されるように、加工穴とワークＷの内周面Ｗｉが交差する内側の開口周縁部が、算盤玉形状の外周面Ｔ１のうち工具根元側のテーパ形状部分によって面取り加工され、図３（ｄ）に示されるように、加工穴とワークＷの外周面Ｗｏが交差する外側の開口周縁部が、工具先端側の先細のテーパ形状部分によって面取り加工される。 The tool T, as shown in FIG. 3 (a) and (b), a rotating tool insertion portion T f provided at its front end has an outer peripheral surface T 1 of the abacus ball shape, the insertion portion T f The outer diameter D is formed to have the same diameter as the inner diameter (processed hole diameter) d of the processed holes Wh 1 , Wh 2 , Wh 3 , Wh 4 . The outer peripheral surface T 1, the blade portion T 2 to a plurality of positions in the circumferential direction are provided, while rotating at a processing spindle 7 mounting the tool T, the relative movement along the rim of the opening of the machined hole doing, chamfered by cutting portion T 2 is performed. Specifically, as shown in FIG. 3 (c), the inside of the opening edge of the inner peripheral surface Wi intersects the machined hole and the workpiece W is, the tool base side of the outer circumferential surface T 1 of the abacus ball shape As shown in FIG. 3D, the outer peripheral edge of the opening where the machining hole and the outer peripheral surface Wo of the workpiece W intersect is chamfered by the tapered tapered portion on the tool tip side. Is done.

面取り加工装置１による加工処理は、ワークＷが加工穴Ｗｈ１を正確に芯出しされた状態（加工主軸７及び工具Ｔの回転軸線と加工穴Ｗｈ１の中心軸線が一致した状態）で搬入され、第一チャック機構２及び第二チャック機構３が作動してワークＷを固定することにより開始される。ワークＷを固定した状態で、Ｘ−Ｙテーブル６によるワークＷの水平移動と、加工主軸７による面取り工具Ｔの上下移動と、を組み合わせてなるプログラム制御により、工具ＴとワークＷを相対移動させ、加工穴Ｗｈ１の開口周縁部のエッジを面取り加工する処理が実行される。 Processing by the chamfering apparatus 1 is carried in a state where the work W is correctly center the machined hole Wh 1 (state where the center axis of the rotational axis of the processing spindle 7 and the tool T machined hole Wh 1 matches) The operation is started when the first chuck mechanism 2 and the second chuck mechanism 3 are operated to fix the workpiece W. With the workpiece W fixed, the tool T and the workpiece W are moved relative to each other by program control that combines the horizontal movement of the workpiece W by the XY table 6 and the vertical movement of the chamfering tool T by the machining spindle 7. Then, a process of chamfering the edge of the opening peripheral edge of the processing hole Wh 1 is executed.

まず、加工主軸７を下方移動させることにより、図４（ａ）に示されるように、加工穴Ｗｈ１の内側に挿入部Ｔｆを挿入する。次に、図４（ｂ）に示されるように、工具Ｔを回転させながら、その挿入部Ｔｆを内側の開口周縁部に沿うように移動させて面取り加工を行う。内側の開口周縁部の面取り加工終了後、加工主軸７を加工穴Ｗｈ１の中心軸線に沿って上方移動させて、図４（ｃ）に示されるように、挿入部Ｔｆを加工穴Ｗｈ１の外側へ移動させる。最後に、図４（ｄ）に示されるように、工具Ｔを回転させながら、その挿入部Ｔｆを外側の開口周縁部に沿うように移動させることにより、面取り加工を行う。加工穴Ｗｈ１の面取り加工がすべて終了すると、加工主軸７及び工具Ｔがその回転軸線を、加工穴Ｗｈ１の中心軸線と一致させた状態で上方移動して初期位置に戻る。 First, by the processing spindle 7 downward movement, as shown in FIG. 4 (a), inserting the insertion portion T f to the inner side of the machined hole Wh 1. Next, as shown in FIG. 4B, chamfering is performed by moving the insertion portion Tf along the inner peripheral edge of the opening while rotating the tool T. After chamfering the end of the inner opening edge, the processing spindle 7 by upward movement along the central axis of the machined hole Wh 1, as shown in FIG. 4 (c), the insertion part processing the T f hole Wh 1 Move outside. Finally, as shown in FIG. 4D, chamfering is performed by moving the insertion portion Tf along the outer peripheral edge of the opening while rotating the tool T. When all of the chamfering of the machining hole Wh 1 is completed, the machining spindle 7 and the tool T move upward with their rotational axes aligned with the central axis of the machining hole Wh 1 to return to the initial position.

そして、工具Ｔの回転軸線と加工穴Ｗｈ２の中心軸線が一致するように、Ｘ−Ｙテーブル６が筒軸方向に所定寸法Ｘだけ水平移動した後、上記加工穴Ｗｈ１と同様の処理手順で加工穴Ｗｈ２の面取り加工が行われる。しかしながら、加工穴Ｗｈ2は、穴開け加工時における加工バラツキによって、例えば、図５に示されるように、本来形成されるべき位置（二点鎖線で示す。）から、筒軸方向や円周方向に僅かなズレ（ΔＸ，ΔＹ）を生じている。したがって、ワークＷを筒軸方向に所定寸法Ｘ分だけ移動させるだけでは、加工主軸７に装着された工具Ｔと加工穴Ｗｈ2の位置関係に上記のズレが加わり、工具Ｔによる面取り加工を当初の狙い通りに実施することはできない。そこで、Ｘ−Ｙテーブル６を作動させて、ワークＷを筒軸方向に所定寸法Ｘ分だけ水平移動させた後、工具Ｔと加工穴Ｗｈ2の位置関係のズレを補正する下記の処理が行われる。 Then, after the XY table 6 is horizontally moved by a predetermined dimension X in the cylinder axis direction so that the rotation axis of the tool T and the center axis of the machining hole Wh 2 coincide, the processing procedure similar to that of the machining hole Wh 1 is performed. in chamfering the machined hole Wh 2 is performed. However, the machining hole Wh 2 is, for example, as shown in FIG. 5 due to machining variations at the time of drilling, from the position where it should originally be formed (indicated by a two-dot chain line) to the cylinder axis direction or the circumferential direction. Slight deviation (ΔX, ΔY). Therefore, simply moving the workpiece W by the predetermined dimension X in the cylinder axis direction adds the above-described deviation to the positional relationship between the tool T mounted on the machining spindle 7 and the machining hole Wh 2 , and the chamfering process with the tool T is initially performed. It cannot be implemented as intended. Therefore, after the XY table 6 is operated and the workpiece W is horizontally moved by the predetermined dimension X in the cylinder axis direction, the following processing for correcting the positional relationship between the tool T and the machining hole Wh 2 is performed. Is called.

まず、図６に一点鎖線で示されるように、下方で待機していた受止部５を上方移動させて、ワークＷをＶ字状のブロック５１で下方から支持する。なお、ブロック５１は、第一チャック爪２１及び第二チャック爪３１で固定されているワークＷの軸心をずらすことなく支持できるように位置設定されている。次に、第一チャック爪２１及び第二チャック爪３１によるワークＷの固定を解除し、ワークＷをブロック５１上で円筒形状の筒軸方向及び円周方向に摺動可能な状態とする。ここで、工具Ｔを下方移動させると、上述した僅かなズレ（ΔＸ，ΔＹ）があるため、図７（ａ）に一点鎖線で示されるように、挿入部Ｔｆが加工穴Ｗｈ2の開口周縁部に接触するが、ワークＷは挿入部Ｔｆのテーパ形状部分で押されて、円筒形状の筒軸方向及び円周方向に摺動し、図７（ｂ）に示されるように、加工穴Ｗｈ2内に同径の挿入部Ｔｆが挿入されることで、加工穴Ｗｈ2の中心軸線が工具Ｔの回転軸線と一致するように芯出しされる。 First, as indicated by a one-dot chain line in FIG. 6, the receiving portion 5 waiting at the lower side is moved upward, and the workpiece W is supported by the V-shaped block 51 from below. The position of the block 51 is set so that it can be supported without shifting the axis of the workpiece W fixed by the first chuck claw 21 and the second chuck claw 31. Next, the work W is released from being fixed by the first chuck claw 21 and the second chuck claw 31 so that the work W can be slid on the block 51 in the cylindrical axis direction and the circumferential direction. Here, when the tool T is moved downward, there is the above-described slight deviation (ΔX, ΔY), so that the insertion portion Tf is an opening of the machining hole Wh 2 as shown by a one-dot chain line in FIG. Although contacting the peripheral edge, the workpiece W is pushed by the tapered portion of the insertion portion Tf and slides in the cylindrical axis direction and the circumferential direction of the cylindrical shape, as shown in FIG. 7B. by inserting portion T f of the same diameter are inserted into the hole Wh 2, the central axis of the machined hole Wh 2 is centered to coincide with the axis of rotation of the tool T.

そして、加工穴Ｗｈ2内に挿入部Ｔｆが挿入嵌合されたままの状態で、第一チャック機構２及び第二チャック機構３が作動してワークＷが固定され、受止部５が下方へ退避する。図７（ｃ）に示されるように、加工穴Ｗｈ２の内側に挿入部Ｔｆが挿入された後、上記加工穴Ｗｈ１と同様に、内側の開口周縁部の面取り加工が行われ、引き続いて外側の開口周縁部の面取り加工が行われる。加工穴Ｗｈ２の面取り加工終了後、ワーク回転機構４が作動して、ワークＷをその円周方向に１８０度回転させ、加工穴Ｗｈ３，Ｗｈ４が上面側に向けられる。そして、これらの加工穴Ｗｈ３，Ｗｈ４についても、上述した加工穴Ｗｈ２と同様に筒軸方向や円周方向に僅かなズレを生じているが、加工穴径ｄと同径の工具Ｔを挿入嵌合することにより、その中心軸線を工具Ｔの回転軸線と一致させるための芯出しが行われ、ワークＷの内側及び外側の開口周縁部の面取り加工が施される。 The first chuck mechanism 2 and the second chuck mechanism 3 operate to fix the workpiece W in a state where the insertion portion Tf is inserted and fitted into the processing hole Wh 2 , and the receiving portion 5 is moved downward. Evacuate to. As shown in FIG. 7 (c), after the insertion portion T f is inserted inside the machined hole Wh 2, similarly to the machined hole Wh 1, it is carried out chamfering of the inner opening edge, subsequently Then, chamfering of the outer peripheral edge of the opening is performed. After the chamfering of the processing hole Wh 2 is completed, the work rotation mechanism 4 operates to rotate the work W 180 degrees in the circumferential direction, and the processing holes Wh 3 and Wh 4 are directed to the upper surface side. In addition, the machining holes Wh 3 and Wh 4 also have a slight deviation in the cylinder axis direction and the circumferential direction as in the above-described machining hole Wh 2 , but the tool T having the same diameter as the machining hole diameter d. Is inserted and fitted, the center axis is aligned with the rotation axis of the tool T, and chamfering is performed on the inner peripheral edge and the outer peripheral edge of the work W.

（上記実施形態に係る面取り加工装置の特徴）
上記実施形態に係る面取り加工装置１は、上記のように構成される結果、下記の特徴を有する。 (Characteristics of chamfering apparatus according to the above embodiment)
The chamfering apparatus 1 according to the above embodiment has the following characteristics as a result of being configured as described above.

第一に、面取り加工装置１は、加工主軸７に装着される工具Ｔの挿入部ＴｆがワークＷの加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4と同径に形成されており、挿入部Ｔｆを加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4の内部に挿入嵌合させて芯出しを行い、加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4に挿入部Ｔｆを残したままでワークＷを固定するという特徴を有する。これにより、ワークＷに対して加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4の形成位置がずれていても、工具Ｔに対する芯出しを正確に行うことが可能となる。特に、本実施形態のように加工穴が円周面に形成され、その開口周縁部が三次元曲線で形成されている場合でも、上記従来のテーパ面を押し当てる芯出し手段のように片当りと異なり、高精度の芯出しが行われる。 First, chamfering apparatus 1, the insertion portion T f of the tool T mounted on the processing spindle 7 is a machined hole Wh 2, Wh 3, Wh 4 of the workpiece W is formed in the same diameter, the insertion portion T that f was a machined hole Wh 2, Wh 3, fitted into the inside of Wh 4 together perform centering by, for fixing the workpiece W while leaving the insertion portion T f of the processing hole Wh 2, Wh 3, Wh 4 Has characteristics. Thereby, even if the formation positions of the machining holes Wh 2 , Wh 3 , Wh 4 are deviated from the workpiece W, the centering with respect to the tool T can be accurately performed. In particular, even when the machining hole is formed on the circumferential surface as in the present embodiment and the peripheral edge portion of the opening is formed with a three-dimensional curve, the one-side contact like the conventional centering means for pressing the tapered surface is used. Unlike, high-precision centering is performed.

第二に、面取り加工装置１は、円筒形状でその円周面に加工穴が形成されるワークＷを、軸心をずらすことなく支持することができ、加工穴が芯出しされる際に筒軸方向及び円周方向に摺動可能に受止支持する受止部を備えているという特徴を有する。これにより、芯出しのために工具Ｔの挿入部Ｔｆを加工穴に挿入する際に、ワーク姿勢が安定して高精度な芯出しが可能となる。 Secondly, the chamfering device 1 can support a workpiece W having a cylindrical shape and a machining hole formed on its circumferential surface without shifting the axis, and the cylinder is formed when the machining hole is centered. It has a feature that it includes a receiving portion that receives and supports it so as to be slidable in the axial direction and circumferential direction. As a result, when the insertion portion Tf of the tool T is inserted into the machining hole for centering, the workpiece posture is stable and highly accurate centering is possible.

第三に、面取り加工装置１は、加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4を芯出しするための工具Ｔを、加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4の開口周縁部の面取り加工に用いるという特徴を有する。これにより、ワークＷの芯出しをした後、加工穴Ｗｈ2，Ｗｈ3，Ｗｈ4の面取り加工へ移行する際や、所定の加工穴の面取り加工をした後、次の加工穴の芯出しへ移行する際、あるいは、新たなワークＷの加工処理へ移行する際に、工具と芯出し冶具を交換するための時間的ロスが無く、生産効率の低下が防止される。 Thirdly, chamfering apparatus 1, the tool T for center the machined hole Wh 2, Wh 3, Wh 4, of using the chamfering of the opening periphery of the processed hole Wh 2, Wh 3, Wh 4 Has characteristics. As a result, after the workpiece W is centered, when shifting to the chamfering of the processing holes Wh 2 , Wh 3 , Wh 4 , or after chamfering a predetermined processing hole, to the centering of the next processing hole There is no time loss for exchanging the tool and the centering jig when shifting to the processing of a new workpiece W or when shifting to a new workpiece W, thereby preventing a reduction in production efficiency.

（上記実施形態の変形例）
上記実施形態では、中空円筒形状のワークを芯出しする場合について説明したが、本発明は様々な形状のワークの芯出しに適用しても良い。特に芯出しの対象となる加工穴がワークの平面でない部位に形成され、開口周縁部が三次元形状となっている場合であれば、上記従来のテーパ面を開口周縁部に押し当てる芯出し手段のように、芯出し冶具と開口周縁部が片当りすることなく、正確に芯出しすることができるという優れた効果を発揮し得る。 (Modification of the above embodiment)
In the above embodiment, the case of centering a hollow cylindrical workpiece has been described. However, the present invention may be applied to centering a workpiece having various shapes. In particular, when the processing hole to be centered is formed in a portion that is not a flat surface of the workpiece and the opening peripheral portion has a three-dimensional shape, the above-described conventional centering means that presses the tapered surface against the opening peripheral portion. As described above, it is possible to exhibit an excellent effect that the centering jig and the opening peripheral edge can be accurately centered without causing a single contact.

上記実施形態では、単一の円筒形状からなるワークを芯出しする場合について説明したが、径の異なる複数の円筒体を筒軸方向に連結してなるワークや、円筒形状以外の形状が含まれるワークに適用することとしても良い。また、上記実施形態では、ワークに形成される加工穴が相互に同径である場合について説明したが、相互に異なる場合についても適用することができる。例えば加工穴Ｗｈ１が加工穴Ｗｈ2よりも大きい場合に適用することとしても良い。 In the above-described embodiment, the case of centering a workpiece having a single cylindrical shape has been described. However, workpieces formed by connecting a plurality of cylindrical bodies having different diameters in the cylinder axis direction and shapes other than the cylindrical shape are included. It may be applied to the workpiece. Moreover, although the said embodiment demonstrated the case where the process hole formed in a workpiece | work is mutually the same diameter, it is applicable also when it mutually differs. For example, it may be applied when the processing hole Wh 1 is larger than the processing hole Wh 2 .

上記実施形態では、加工穴の開口周縁部を面取り加工する工具をワークの芯出しのために使用する場合について説明したが、工具は芯出しする加工穴に対して面取り加工以外の加工処理を行うものとしても良く、あるいは芯出しする加工穴を加工基準とする加工処理を行うためのものとしても良い。その他、工具は専ら加工穴の芯出しに使用されるものとしても良い。   In the above embodiment, the case where the tool for chamfering the opening peripheral edge of the machining hole is used for centering the workpiece has been described. However, the tool performs machining processing other than chamfering on the machining hole to be centered. It is good also as a thing for performing the processing which makes the processing reference | standard the processing hole to center. In addition, the tool may be used exclusively for centering a processing hole.

その他、本発明は、上記実施形態に限定されるものではなく、本発明の要旨を逸脱しない範囲内において種々変更を加え得ることは勿論である。   In addition, this invention is not limited to the said embodiment, Of course, various changes can be added within the range which does not deviate from the summary of this invention.

本実施形態に係るワーク加工装置を示す平面図。The top view which shows the workpiece processing apparatus which concerns on this embodiment. 本実施形態に係るワーク加工装置に備えられるワーク芯出し装置で加工穴を芯出しされるワークＷを示す（ａ）平面図、（ｂ）正面図、及び（ｃ）側面図。(A) Top view, (b) Front view, and (c) Side view showing a workpiece W whose machining holes are centered by a workpiece centering device provided in the workpiece machining apparatus according to the present embodiment. 本実施形態に係るワーク加工装置に用いられる工具を示す図で、（ｂ）は（ａ）のＡ視に該当し、（ｃ），(ｄ)は工具によるワークの加工処理を説明する図。It is a figure which shows the tool used for the workpiece processing apparatus which concerns on this embodiment, (b) corresponds to the A view of (a), (c), (d) is a figure explaining the processing process of the workpiece | work with a tool. 本実施形態に係るワーク加工装置による面取り加工の手順を説明する図。The figure explaining the procedure of the chamfering process by the workpiece processing apparatus which concerns on this embodiment. ワークに形成される加工穴の位置ズレについて説明する図。The figure explaining the position shift of the processing hole formed in a workpiece | work. ワークを受止支持する受止部を示す図。The figure which shows the receiving part which receives and supports a workpiece | work. 本実施形態に係るワーク加工装置による芯出しの手順について説明する図。The figure explaining the procedure of centering by the workpiece processing apparatus which concerns on this embodiment.

符号の説明Explanation of symbols

１ ワーク加工装置
２ 第一チャック機構
３ 第二チャック機構
４ ワーク回転機構
５ 受止部
６ テーブル
７ 加工主軸
Ｔ 工具
Ｔｆ 挿入部
Ｗ ワーク
Ｗｈ１，Ｗｈ２，Ｗｈ３，Ｗｈ４ 加工穴 1 work machining apparatus 2 first chuck mechanism 3 second chuck mechanism 4 work rotating mechanism 5 receiving portion 6 Table 7 processing spindle T tool T f insertion portion W Work Wh 1, Wh 2, Wh 3 , Wh 4 machined hole

Claims (5)

ワークに形成された加工穴を芯出しするためのワーク芯出し方法において、
前記加工穴径と同径の挿入部を備える工具を加工主軸に装着し、
前記挿入部を前記加工穴の内部に挿入嵌合してワークを加工主軸基準で位置決めし、
前記挿入部を挿入嵌合したままの状態で、位置決めされたワークを固定することを特徴とするワーク芯出し方法。 In the workpiece centering method for centering the machining hole formed in the workpiece,
A tool equipped with an insertion portion having the same diameter as the machining hole diameter is attached to the machining spindle,
The insertion portion is inserted and fitted into the machining hole to position the workpiece with respect to the machining spindle,
A work centering method comprising fixing a positioned work in a state where the insertion portion is inserted and fitted. 請求項１に記載のワーク芯出し方法において、
ワークは、円筒形状部を備えるとともに、その円周面に前記加工穴が形成されており、
前記円筒形状部は、前記挿入部が前記加工穴に挿入嵌合される際に、ワークを前記円筒形状部の筒軸方向及び円周方向に摺動可能に受止支持する受止部で受止支持されていることを特徴とするワーク芯出し方法。 The work centering method according to claim 1,
The workpiece includes a cylindrical portion, and the processed hole is formed on the circumferential surface thereof.
The cylindrical portion is received by a receiving portion that receives and supports the workpiece so as to be slidable in the cylindrical axis direction and the circumferential direction of the cylindrical portion when the insertion portion is inserted and fitted into the machining hole. A work centering method characterized in that the work is centered. ワークに形成された加工穴を芯出しするためのワーク芯出し装置において、
ワークを摺動可能に受止支持する受止部と、
前記受止部に受止支持されるワークを位置ズレさせることなく固定可能な固定部と、
前記加工穴径と同径の挿入部を備える工具が装着される加工主軸と、を備えてなり、
前記受止部で摺動可能に受止支持されるワークの加工穴の内部に、前記挿入部を挿入嵌合し、ワークを加工主軸基準で位置決めした状態において、前記固定部でワークを固定することを特徴とするワーク芯出し装置。 In the workpiece centering device for centering the machining hole formed in the workpiece,
A receiving portion for receiving and supporting the workpiece slidably;
A fixing part that can be fixed without shifting the work received and supported by the receiving part; and
A machining spindle on which a tool having an insertion portion having the same diameter as the machining hole diameter is mounted, and
The insertion portion is inserted and fitted into the machining hole of the workpiece that is slidably received and supported by the receiving portion, and the workpiece is fixed by the fixing portion in a state where the workpiece is positioned with respect to the machining spindle. A workpiece centering device characterized by that. 請求項３に記載のワーク芯出し装置であって、
ワークは円筒形状部を備えるとともに、その円周面に前記加工穴が形成されており、
前記受止部は、ワークを前記円筒形状部の筒軸方向及び円周方向に摺動可能に受止支持することを特徴とするワーク芯出し装置。 The workpiece centering device according to claim 3,
The workpiece has a cylindrical portion, and the machining hole is formed on the circumferential surface thereof.
The workpiece centering device, wherein the receiving portion receives and supports the workpiece so as to be slidable in a cylindrical axis direction and a circumferential direction of the cylindrical portion. 請求項３又は４に記載のワーク芯出し装置を備えてなり、
前記工具を、前記加工主軸によって、前記加工穴又は前記加工穴を位置基準とする部位の加工処理に用いることを特徴とするワーク加工装置。 Comprising the workpiece centering device according to claim 3 or 4,
A workpiece machining apparatus, wherein the tool is used for machining of the machining hole or a part with the machining hole as a position reference by the machining spindle.
JP2007056651A 2007-03-07 2007-03-07 Workpiece centering method and workpiece centering device and workpiece machining apparatus including the same Pending JP2008213118A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101954499A (en) * 2010-08-11 2011-01-26 哈尔滨锅炉厂有限责任公司 Internal taper hole processing equipment and method of ultra supercritical boiler secondary mixer
KR20170105818A (en) * 2016-03-10 2017-09-20 김민응 Drill machine for processing steering yoke of vehicle

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101954499A (en) * 2010-08-11 2011-01-26 哈尔滨锅炉厂有限责任公司 Internal taper hole processing equipment and method of ultra supercritical boiler secondary mixer
KR20170105818A (en) * 2016-03-10 2017-09-20 김민응 Drill machine for processing steering yoke of vehicle
KR101888371B1 (en) * 2016-03-10 2018-08-14 김민응 Drill machine for processing steering yoke of vehicle

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