【０００１】
【発明の属する技術分野】
本発明は、レーザ加工機の加工物支持装置に関し、特にパイプ構造等の被加工物に適するレーザ加工機の加工物支持装置に関する。
【０００２】
【従来の技術】
従来、例えば、図３に示すように、レーザ加工機でスクロールチャック３０３を取り付けたインデックス装置３０４を用いて、例えば、丸パイプＷＰ′の外周に穴開け加工等を行うことは一般的である。
【０００３】
また、４爪チャックを用いることにより、正四角パイプの加工も可能であり、この場合、対向位置の芯押し台の当接押圧部材４０１は、通常の円錐形状を用いることが出来る。
【０００４】
また、パイプ加工装置のパイプ支持方法及びその装置として、パイプ回転装置に備えた把持具（チャック）にパイプを挿通可能に設けると共に、このパイプを前記把持具で自動的に把持・開放自在に設け、加工テーブルの延長上を進退移動自在な可動テーブルを設け、この可動テーブル上に前記回転装置に挿通したパイプの後端側を自動的に把持・開放自在な把持具を備え、パイプ加工装置の加工テーブル上のパイプを自動的に効率よく、つかみ換えして支持する技術が知られる（例えば、特許文献１参照。）。
【０００５】
【特許文献１】
特開平１０−２３５４９５号公報
【０００６】
【発明が解決しようとする課題】
然しながら上述の従来例では、何れの場合も、断面形状が非対称のパイプなどには、対応しにくいものであり、例えば、断面が長四角パイプの場合でも、２爪または４爪のチャックを使用すれば、把持することは出来ても、芯出し調整に対応しにくく、対応出来たとしても手間が掛り、作業性が悪くて実用性に乏しく、また円錐形状の芯押し台の当接押圧部材も機能せず、別途ジグが必要となるなどの問題がある。
【０００７】
本発明は、上述の点に着目して成されたもので、長四角パイプ等の断面形状が非対称のパイプ状被加工物を簡便に把持・挟持可能なレーザ加工機の加工物支持装置を提供することを目的とする。
【０００８】
【課題を解決するための手段】
本発明は、下記構成を備えることにより上記課題を解決できるものである。
【０００９】
（１）被加工物を支持する軸芯上の両端支持部が掛止台と芯押し台から成る加工物支持装置であって、パイプ状被加工物の内側対角位置に対し両側から押圧・支持することで、簡便に芯出し挟持操作を可能とするレーザ加工機の加工物支持装置。
【００１０】
（２）前項（１）記載のレーザ加工機の加工物支持装置において、前記掛止台は、相対向するチャックの爪部突端且つ軸芯から等距離に掛止部材を夫々突設し、パイプ状被加工物の中空部に前記掛止部材を挿入拡幅するようにスクロールして固定し、対向して位置する芯押し台は軸芯位置を頂点とした三角形状の板体からなる当接押圧部材で構成すると共に、前記板体の頂部を通る軸芯部に被加工物を支持可能な棒状体を挿入できる筒体を具備して成ることを特徴とするレーザ加工機の加工物支持装置。
【００１１】
（３）前項（１）記載のレーザ加工機の加工物支持装置において、前記掛止台と芯押し台から成る加工物支持装置は、パイプ状被加工物の被加工対象部位・対象面を所望位置決め可能に軸芯を中心に回動制御自在であるレーザ加工機の加工物支持装置。
【００１２】
【発明の実施の形態】
以下、本発明に係るレーザ加工機の加工物支持装置の実施の形態を説明する。
【００１３】
図１は、本発明に係る加工物支持装置の詳細図であり、（ａ）は掛止台側の側面図、（ｂ）はＡ−Ａ矢視図、（ｃ）は芯押し台側の側面図、（ｄ）はＢ−Ｂ矢視図、図２は、掛止台及び芯押し台からなる加工物支持装置の外観図、（ａ）は側面図、（ｂ）は加工物を把持・挟持した状態を示す側面図、図３は、従来例における加工物支持装置の外観図、（ａ）は平面図、（ｂ）は側面図、（ｃ）は加工物を把持・挟持した状態を示す側面図、（ｄ）は４つ爪チャックによる従来の支持方法を示すＣ−Ｃ矢視図である。
【００１４】
（実施例）
以下実施例について図面を参照して説明する。
【００１５】
レーザ加工機でパイプ等の被加工物に、例えば、穴明け加工などを実施する場合、被加工部位または被加工面を加工ヘッドＨＥが操作可能な範囲内に位置決めする必要があり、図１、及び図２において、被加工物ＷＰを支持する軸芯Ｓ上の両端支持部が掛止台１００と芯押し台２００から成る加工物支持装置であって、パイプ状被加工物ＷＰの内側対角位置に対し両側から押圧・支持することで、簡便に芯出し挟持操作を可能とし、前記掛止台１００は、相対向するチャック１０３の爪部１０１ａ、１０１ｂの突端且つ軸芯Ｓから等距離Ｌ、Ｌに掛止部材１０２、１０２を夫々突設し、パイプ状被加工物ＷＰの中空部に前記掛止部材１０２、１０２を挿入拡幅するようにスクロールして固定し、対向して位置する芯押し台２００は軸芯位置を頂点とした三角形状の板体からなる当接押圧部材２０１で構成すると共に、前記三角形状の板体の頂部を通る軸芯部に被加工物を支持可能な棒状体を挿入できる筒体２０２を具備し、例えば、加工操作が終って被加工物を切り離したり、或は単に外す場合、この筒体２０２に適合する丸棒等の棒状体を挿入することにより被加工物を支えることが出来る。
【００１６】
また、前記掛止台１００と芯押し台２００から成る加工物支持装置は、パイプ状被加工物ＷＰの被加工対象部位・対象面を所望位置決め可能に軸芯Ｓを中心に、インデックス装置１０４の割り出し回動作用により、回動制御自在である。
【００１７】
尚、本発明の加工物支持装置では、例えば、断面長四角のパイプを扱う場合では、上下または左右対向の爪部１０１ａ、１０１ｂ、または１０１ｃ、１０１ｄの二個一組の作用で被加工物を掛止できるので、少なくとも対向する二個の爪部１０１に、例えば、ピン状の掛止部材１０２を図示するように爪部１０１ａ、１０１ｂ、または１０１ｃ、１０１ｄの突端に突設すれば良い。
【００１８】
上述の構成及び図面を参照して作用を説明する。
【００１９】
例えば、断面が長四角のパイプ状被加工物ＷＰ（図１及び２参照）の面に穴等をレーザ加工機で加工する場合、掛止台１００の２つ爪または４つ爪のチャックの対向する爪部１０１ａ、１０１ｂまたは１０１ｃ、１０１ｄの突端且つ軸芯Ｓから等距離Ｌ、Ｌに突設した掛止部材１０２、１０２に、前記被加工物ＷＰの一端中空部となる内側対角位置に係合して挿入し、前記対向する爪部、例えば１０１ａ、１０１ｂを互いに離間・拡幅するようにスクロールすることで、断面長四角の対角を固定して把持し、一方、芯押し台２００のハンドル２０４を回動操作することにより図２（ｂ）に示すように、矢印の方向に芯押し台２００を微小ストローク移動させ、軸芯位置を頂点とした三角形状の板体からなる当接押圧部材２０１の係合部位が前記被加工物ＷＰの他端中空部の内側対角位置に当接・押圧調整して、前記被加工物ＷＰの芯出し挟持操作を完了する。
【００２０】
次いで、前記被加工物ＷＰの加工部位または加工面をレーザ加工ヘッドＨＥに対し、例えば水平にする等の適応姿勢とする為に、前記加工ヘッドＨＥに設けられた不図示の倣いセンサにより被加工物ＷＰのセッティング角度を検出し、不図示の制御装置からの指令で被加工物ＷＰと加工ヘッドＨＥの相対位置の姿勢制御を行うことが出来、更に前記倣いセンサで各面を構成する周辺の長辺・短辺長さを判別し、所望の面を上面に位置決め制御可能である。
【００２１】
そして、インデックス装置１０４内の不図示のサーボモータでパイプ等の被加工物を回転させながら加工ヘッドＨＥよりレーザ光を照射して周面の穴加工等を行う。
【００２２】
また、掛止台１００側のチャック１０３の爪部１０１で囲まれた中心部は軸芯の延長上にあり、穴部が形成されているので、芯押し台２００の当接押圧部材２０１の中心部となる軸芯部の筒体２０２に被加工物ＷＰを支持可能な棒状体を挿入して、加工前の準備段階や、加工終了後の被加工物ＷＰを外す際の付随操作段階において使用することが出来る。
【００２３】
尚、本発明のレーザ加工機の加工物支持装置は、通常のパイプ等に限らず、断面中空／肉厚不定の被加工物であっても、加工条件によっては、かなり広範囲に適応可能である。
【００２４】
【発明の効果】
以上説明したように本発明によれば、インデックス装置を有する掛止台側のチャック爪部に掛止部材となるピンを設け、角パイプの内側対角を把持し、また芯押し台の当接押圧部材を板状体で構成し、角パイプの内側対角を押圧して支えるようにしたことで、芯出し調整作業を不要とし、且つ加工位置の姿勢制御自在とするレーザ加工機の加工物支持装置を提供出来る。
【図面の簡単な説明】
【図１】本発明に係る加工物支持装置の詳細図、（ａ）掛止台側の側面図、（ｂ）Ａ−Ａ矢視図、（ｃ）芯押し台側の側面図、（ｄ）Ｂ−Ｂ矢視図
【図２】掛止台及び芯押し台からなる加工物支持装置の外観図、（ａ）側面図、（ｂ）加工物を把持・挟持した状態を示す側面図
【図３】従来例における加工物支持装置の外観図、（ａ）平面図、（ｂ）側面図、（ｃ）加工物を把持・挟持した状態を示す側面図、（ｄ）４つ爪チャックによる従来の支持方法を示すＣ−Ｃ矢視図
【符号の説明】
１００ 掛止台
１０３、３０３ チャック
１０１ａ、１０１ｂ、１０１ｃ、１０１ｄ 爪部
１０２ 掛止部材
１０４、３０４ インデックス装置
２００ 芯押し台
２０１ 当接押圧部材
２０２ 筒体
２０４、４０４ ハンドル
４０１ 円錐形状当接押圧部材
ＨＥ 加工ヘッド
ＷＰ、ＷＰ′ 被加工物[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a workpiece support device of a laser beam machine, and more particularly to a workpiece support device of a laser beam machine suitable for a workpiece such as a pipe structure.
[0002]
[Prior art]
Conventionally, for example, as shown in FIG. 3, it is common to perform drilling or the like on the outer periphery of a round pipe WP ′ using an index device 304 to which a scroll chuck 303 is attached by a laser processing machine.
[0003]
Further, by using a four-jaw chuck, it is possible to process a regular square pipe. In this case, the contact pressing member 401 of the tailstock at the opposing position can have a normal conical shape.
[0004]
In addition, as a method and a device for supporting a pipe of a pipe processing device, a pipe is provided so that it can be inserted into a gripper (chuck) provided in a pipe rotating device, and the pipe is automatically gripped and released by the gripper. A movable table that can move forward and backward on the extension of the processing table, and a gripper that can automatically grip and release the rear end side of the pipe inserted into the rotating device on the movable table; There is known a technique for automatically and efficiently holding and supporting a pipe on a processing table (for example, see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-10-235495
[Problems to be solved by the invention]
However, in the above-described conventional example, in any case, it is difficult to cope with a pipe having an asymmetric cross-sectional shape. For example, even in the case of a rectangular pipe having a cross-section, a two-claw or four-claw chuck may be used. If it can be gripped, it is difficult to cope with the centering adjustment, and even if it can be done, it takes time, poor workability and poor practicality, and the contact pressing member of the conical core press There is a problem that a jig is required without functioning.
[0007]
The present invention has been made in view of the above points, and provides a workpiece support device of a laser processing machine capable of easily holding and holding a pipe-shaped workpiece having an asymmetric cross-sectional shape such as a rectangular pipe. The purpose is to do.
[0008]
[Means for Solving the Problems]
The present invention can solve the above-mentioned problems by providing the following configuration.
[0009]
(1) A workpiece support device in which both end support portions on a shaft core supporting a workpiece include a latch table and a tailstock, and are pressed from both sides against an inner diagonal position of a pipe-shaped workpiece. A workpiece support device of a laser processing machine that enables easy centering and sandwiching operation by supporting.
[0010]
(2) In the workpiece support device for a laser beam machine according to the above (1), the latching table projects a latching member at an equal distance from a claw projection of an opposing chuck and an equal distance from an axis. The hooking member is inserted into the hollow part of the workpiece to be scrolled and fixed so as to widen, and the tailstock located opposite to the abutment press is formed of a triangular plate having the axle position at the top. A workpiece support device for a laser beam machine, comprising: a cylindrical member which is formed of a member and into which a rod capable of supporting a workpiece can be inserted into an axis passing through the top of the plate.
[0011]
(3) In the workpiece support device for a laser beam machine according to the above item (1), the workpiece support device including the hanging table and the tailstock preferably has a target portion / surface to be processed of a pipe-shaped workpiece. A workpiece support device for a laser beam machine that can be positioned and controlled to rotate around its axis.
[0012]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of a workpiece support device for a laser beam machine according to the present invention will be described.
[0013]
1A and 1B are detailed views of a workpiece support device according to the present invention, in which FIG. 1A is a side view of a hanging table side, FIG. 1B is a view taken along a line AA, and FIG. FIG. 2D is a side view, FIG. 2D is a view taken in the direction of arrows BB, FIG. 2 is an external view of a workpiece support device including a latch table and a tailstock, FIG. 2A is a side view, and FIG. 3 is a side view showing a state in which the workpiece is held, FIG. 3 is an external view of a workpiece support device in a conventional example, (a) is a plan view, (b) is a side view, and (c) is a state in which the workpiece is gripped and held. And (d) is a CC view showing a conventional supporting method using a four-jaw chuck.
[0014]
(Example)
Hereinafter, embodiments will be described with reference to the drawings.
[0015]
When a workpiece such as a pipe is drilled, for example, by a laser beam machine, it is necessary to position a portion to be processed or a surface to be processed within a range in which the processing head HE can be operated. 2 and FIG. 2, a workpiece support device in which both end support portions on an axis S that supports a workpiece WP includes a hanging table 100 and a tailstock 200, wherein the pipe-shaped workpiece WP has a diagonal inside. By pressing and supporting the position from both sides, the centering and holding operation can be easily performed, and the latch table 100 is equidistant L from the protruding ends of the claw portions 101a and 101b of the opposed chuck 103 and the axis S. , L, the hook members 102, 102 are respectively protrudingly provided, and the hook members 102, 102 are inserted into the hollow portion of the pipe-shaped workpiece WP by scrolling and fixed so as to be widened. Push table 200 A cylindrical body 202 which is constituted by a contact pressing member 201 formed of a triangular plate body having a point and is capable of inserting a rod-shaped body capable of supporting a workpiece into an axis passing through the top of the triangular plate body. For example, when the workpiece is cut off or simply removed after the processing operation is completed, the workpiece can be supported by inserting a rod-shaped body such as a round bar that fits into the cylindrical body 202.
[0016]
Further, the workpiece support device including the hanging table 100 and the tailstock 200 is provided with an indexing device 104 centered on the axis S so as to be able to position the target portion / surface of the pipe-shaped workpiece WP in a desired manner. The rotation can be controlled freely by the indexing rotation action.
[0017]
In the workpiece support device of the present invention, for example, when handling a pipe having a square cross section, the workpiece is processed by a pair of upper and lower or left and right opposed claw portions 101a, 101b, or 101c, 101d. Since the hooks can be hooked, for example, a pin-shaped hooking member 102 may be provided on at least two opposing hooks 101 at the protruding ends of the hooks 101a, 101b or 101c, 101d as shown in the figure.
[0018]
The operation will be described with reference to the above configuration and drawings.
[0019]
For example, when a hole or the like is formed on the surface of a pipe-shaped workpiece WP (see FIGS. 1 and 2) having a rectangular cross section by a laser beam machine, the two-jaw or four-jaw chucks of the hook 100 are opposed to each other. Claws 101a, 101b or 101c, 101d, and the hooking members 102, 102 protruding at equal distances L, L from the axis S, are positioned at an inner diagonal position where one end of the workpiece WP becomes a hollow portion. By engaging and inserting, and scrolling the opposed claw portions, for example, 101a and 101b so as to separate and widen each other, fix and hold the diagonal of the cross-section square, By rotating the handle 204, as shown in FIG. 2 (b), the tailstock 200 is moved by a small stroke in the direction of the arrow, and the contact pressing is made of a triangular plate having the axle position at the top. The engagement part of the member 201 is in front Workpiece pressed into contact adjusted inward diagonal positions of the other end hollow portion of WP, complete the centering clamping operation of the workpiece WP.
[0020]
Next, in order to set the processing portion or the processing surface of the workpiece WP to an adaptive posture, for example, horizontal with respect to the laser processing head HE, the processing is performed by a scanning sensor (not shown) provided on the processing head HE. The setting angle of the workpiece WP can be detected, and the posture of the relative position between the workpiece WP and the processing head HE can be controlled by a command from a control device (not shown). It is possible to determine the length of the long side and the short side and control the positioning of the desired surface on the upper surface.
[0021]
Then, while a workpiece such as a pipe is rotated by a servo motor (not shown) in the index device 104, a laser beam is emitted from the processing head HE to form a hole in the peripheral surface.
[0022]
The center of the chuck 103 on the side of the hook 100 surrounded by the claw portion 101 is on the extension of the axis and has a hole, so that the center of the contact pressing member 201 of the tailstock 200 is formed. A rod-shaped body capable of supporting the workpiece WP is inserted into the cylindrical body 202 of the shaft core portion, which is used in a preparation stage before processing and an accompanying operation step when removing the workpiece WP after processing is completed. You can do it.
[0023]
Note that the workpiece support device of the laser beam machine according to the present invention is not limited to ordinary pipes and the like, and can be applied to a wide range of workpieces having a hollow cross section / uneven thickness depending on the processing conditions. .
[0024]
【The invention's effect】
As described above, according to the present invention, a pin serving as a hooking member is provided on the chuck claw portion on the side of the hooking table having the indexing device, the inside diagonal of the square pipe is gripped, and the tailing table abuts. The pressing member is formed of a plate-shaped body, and the inner diagonal of the square pipe is pressed and supported, so that the centering adjustment work is not required and the posture of the processing position can be freely controlled. A support device can be provided.
[Brief description of the drawings]
FIG. 1 is a detailed view of a workpiece support device according to the present invention, (a) a side view on a hanging table side, (b) a view along arrow AA, (c) a side view on a tailstock side, (d). FIG. 2 is an external view of a workpiece support device including a latch table and a tailstock, FIG. 2A is a side view, and FIG. 2B is a side view showing a state where the workpiece is gripped and clamped. FIG. 3 is an external view of a work supporting device in a conventional example, (a) a plan view, (b) a side view, (c) a side view showing a state where a work is gripped and held, and (d) a four-jaw chuck. CC view showing a conventional support method.
REFERENCE SIGNS LIST 100 Hooks 103, 303 Chuck 101 a, 101 b, 101 c, 101 d Claw 102 Hooks 104, 304 Index device 200 Tailstock 201 Abutment pressing member 202 Cylindrical bodies 204, 404 Handle 401 Conical abutment pressing HE Processing head WP, WP 'Workpiece
