JP3966972B2 - Compound machine tool - Google Patents

Compound machine tool Download PDF

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Publication number
JP3966972B2
JP3966972B2 JP35680597A JP35680597A JP3966972B2 JP 3966972 B2 JP3966972 B2 JP 3966972B2 JP 35680597 A JP35680597 A JP 35680597A JP 35680597 A JP35680597 A JP 35680597A JP 3966972 B2 JP3966972 B2 JP 3966972B2
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Japan
Prior art keywords
tool
coupling
spindle
tool spindle
fixed
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JPH11188506A (en
Inventor
和彦 松本
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DMG Mori Co Ltd
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DMG Mori Co Ltd
Mori Seiki Co Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B3/00—General-purpose turning-machines or devices, e.g. centre lathes with feed rod and lead screw; Sets of turning-machines
    • B23B3/06—Turning-machines or devices characterised only by the special arrangement of constructional units
    • B23B3/065—Arrangements for performing other machining operations, e.g. milling, drilling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
    • B23Q1/70—Stationary or movable members for carrying working-spindles for attachment of tools or work
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q16/00—Equipment for precise positioning of tool or work into particular locations not otherwise provided for
    • B23Q16/02—Indexing equipment
    • B23Q16/08—Indexing equipment having means for clamping the relatively movable parts together in the indexed position
    • B23Q16/10—Rotary indexing
    • B23Q16/102—Rotary indexing with a continuous drive
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q39/00—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation
    • B23Q39/02—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station
    • B23Q39/021—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like
    • B23Q39/025—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder
    • B23Q39/026—Metal-working machines incorporating a plurality of sub-assemblies, each capable of performing a metal-working operation the sub-assemblies being capable of being brought to act at a single operating station with a plurality of toolheads per workholder, whereby the toolhead is a main spindle, a multispindle, a revolver or the like with different working directions of toolheads on same workholder simultaneous working of toolheads
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23B—TURNING; BORING
    • B23B2270/00—Details of turning, boring or drilling machines, processes or tools not otherwise provided for
    • B23B2270/14—Constructions comprising exactly two similar components
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23C—MILLING
    • B23C1/00—Milling machines not designed for particular work or special operations
    • B23C1/12—Milling machines not designed for particular work or special operations with spindle adjustable to different angles, e.g. either horizontal or vertical
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
    • B23Q5/00—Driving or feeding mechanisms; Control arrangements therefor
    • B23Q5/02—Driving main working members
    • B23Q5/04—Driving main working members rotary shafts, e.g. working-spindles
    • B23Q5/20—Adjusting or stopping working-spindles in a predetermined position
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/51—Plural diverse manufacturing apparatus including means for metal shaping or assembling
    • Y10T29/5104—Type of machine
    • Y10T29/5109—Lathe
    • Y10T29/5114—Lathe and tool
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T409/00—Gear cutting, milling, or planing
    • Y10T409/30—Milling
    • Y10T409/306664—Milling including means to infeed rotary cutter toward work
    • Y10T409/307672—Angularly adjustable cutter head
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1702—Rotating work machine tool [e.g., screw machine, lathe, etc.]
    • Y10T483/1705—Tool support comprises rotary spindle
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T483/00—Tool changing
    • Y10T483/17—Tool changing including machine tool or component
    • Y10T483/1733—Rotary spindle machine tool [e.g., milling machine, boring, machine, grinding machine, etc.]
    • Y10T483/1736—Tool having specific mounting or work treating feature
    • Y10T483/1743—Tool having specific mounting or work treating feature including means for angularly orienting tool and spindle
    • Y10T483/1745—Spindle angularly oriented to align with tool

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Machine Tool Positioning Apparatuses (AREA)
  • Turning (AREA)

Description

【０００１】
【発明の属する技術分野】
本発明は、刃物台に工具主軸台を旋回割り出し位置決め可能に設け、該工具主軸台に工具主軸を回転割り出し位置決め可能に設け、主軸を２組設け、ワークの表裏に旋削加工を行なうことができるようにした複合加工工作機械に関する。
【０００２】
【従来の技術】
従来から、１つの刃物台と２つの主軸を備え、ワークの裏表に旋削加工を施すことが可能な複合加工工作機械として、図９に示すＮＣ旋盤５３がある。
【０００３】
上記従来のＮＣ旋盤５３は、１つの刃物台５０に２本の工具５４，５５を取り付け、２つの主軸５１, ５２をＺ軸上にて対向するように設けた構成となっている。このＮＣ旋盤５３では、まず左側主軸５１でワークＷを回転させることにより左側の工具５４で第１工程の旋削加工を行ない、この加工が終了するとワークＷを右側主軸５２に掴みかえて右側の工具５５で第２工程の旋削加工を行なう。
【０００４】
【発明が解決しようとする課題】
ところが、上記従来の複合加工工作機械では、第１, 第２工程で用いられる工具が同じであっても、各工程毎にそれぞれ別の工具を用意する必要があり、そのため多数の工具を必要とし、コスト高となるという問題がある。
【０００５】
本発明は、上記従来の問題点に鑑みてなされたもので、同じ工具を用いる加工は工程が異なっても同一の工具で行なって各工程毎に工具を用意する必要をなくし、コストを低減することができる複合加工工作機械を提供することを課題としている。
【０００６】
【課題を解決するための手段】
請求項１の発明は、図８に示すように、刃物台１０に工具主軸台１２をＸ軸方向に配置し、該工具主軸台１２に工具主軸１４をＸ軸回りに割り出し位置決め可能に設け、ワークＷを回転駆動する主軸３，４をＺ軸上にて対向するように２組設け、上記工具主軸１４に旋削工具Ｔを装着し、該工具主軸１４を工具主軸台１２に対して固定し、上記主軸３，４でワークＷを回転駆動することにより該ワークＷの表裏に旋削加工を施すようにした複合加工工作機械１において、
上記工具主軸１４を割り出し位置決めする第１割り出し機構３０を、図３に示すように、上記工具主軸台１２に多数の噛合歯２３ａを有する第１固定側カップリング２３を固定し、上記工具主軸１４に多数の噛合歯２４ａを有する第１回転側カップリング２４を、上記第１固定側カップリング２３と同軸をなし、かつ両カップリング２３，２４の噛合歯２３ａ，２４ａが同一平面をなすように固定し、上記工具主軸台１２側に多数の噛合歯２５ａを有する第１結合カップリング２５を上記第１固定側，回転側カップリング２３，２４に向かって進退可能に設け、該第１結合カップリング２５の噛合歯２５ａを第１固定側，回転側カップリング２３，２４の両方の噛合歯２３ａ，２４ａに噛合させ、又は離脱させることにより工具主軸１４を工具主軸台１２に固定し、又は該固定を解除する構成のものとし、上記一方の主軸４のワークの加工時と上記他方の主軸３のワークの加工時とで上記工具主軸１４をＸ軸回りに１８０度回転させるようにしたことを特徴としている。
【０００７】
請求項２の発明は、図５〜図７に示すように、刃物台１０に工具主軸台１２をＸＺ軸平面内でＹ軸回りに割り出し位置決め可能に設け、該工具主軸台１２に工具主軸１４を工具主軸まわりに割り出し位置決め可能に設け、ワークＷを回転駆動する主軸３，４をＺ軸上にて対向するように２組設け、上記工具主軸１４に旋削工具Ｔを装着し、該工具主軸１４を工具主軸台１２に対して固定するとともに該工具主軸台１２を刃物台１０に対して固定し、上記主軸３，４でワークＷを回転駆動することにより該ワークＷの表裏に旋削加工を施すようにした複合加工工作機械１において、
上記工具主軸１４を割り出し位置決めする第１割り出し機構３０を、図３に示すように、上記工具主軸台１２に多数の噛合歯２３ａを有する第１固定側カップリング２３を固定し、上記工具主軸１４に多数の噛合歯２４ａを有する第１回転側カップリング２４を、上記第１固定側カップリング２３と同軸をなし、かつ両カップリング２３，２４の噛合歯２３ａ，２４ａが同一平面をなすように固定し、上記工具主軸台１２側に多数の噛合歯２５ａを有する第１結合カップリング２５を上記第１固定側，回転側カップリング２３，２４に向かって進退可能に設け、該第１結合カップリング２５の噛合歯２５ａを第１固定側，回転側カップリング２３，２４の両方の噛合歯２３ａ，２４ａに噛合させ、又は離脱させることにより工具主軸１４を工具主軸台１２に固定し、又は該固定を解除する構成のものとし、
上記工具主軸台１２を割り出し位置決めする第２割り出し機構１３０を、図４に示すように、上記刃物台１０に多数の噛合歯１２３ａを有する第２固定側カップリング１２３を固定し、上記工具主軸台１２に多数の噛合歯１２４ａを有する第２回転側カップリング１２４を、上記第２固定側カップリング１２３と同軸をなし、かつ両カップリング１２３，１２４の噛合歯１２３ａ，１２４ａが同一平面をなすように固定し、上記工具主軸台１２側に多数の噛合歯１２５ａを有する第２結合カップリング１２５を上記第２固定側，回転側カップリング１２３，１２４に向かって進退可能に設け、該第２結合カップリング１２５の噛合歯１２５ａを第２固定側，回転側カップリング１２３，１２４の両方の噛合歯１２３ａ，１２４ａに噛合させ、又は離脱させることにより工具主軸台１２を刃物台１０に固定し、又は該固定を解除する構成のものとし、
上記一方の主軸４のワークＷに旋削加工を施す場合は工具主軸１４をＺ軸上にて一方の主軸４に対向させ（図５参照）、他方の主軸３のワークＷに旋削加工を施す場合は工具主軸１４をＺ軸上にて他方の主軸３に対向させ（図６参照）、かつ工具主軸まわりに１８０度回転させる（図７参照）ようにしたことを特徴としている。
【０００８】
【発明の作用効果】
請求項１の発明に係る複合加工工作機械によれば、図８に示すように、ワークＷの表（右部）への旋削加工は、工具主軸１４を同図の状態に割り出し位置決めし、ワークＷを左側の主軸４で把持し、該主軸４でワークＷを回転させることにより行う。また、ワークＷの裏（左部）への旋削加工は、ワークＷを右側の主軸３で掴み変え、工具Ｔが反転するように工具主軸１４を工具主軸まわりに１８０°回転させて割り出し位置決めし、該右側の主軸３でワークＷを旋回させることにより行う。
【０００９】
このように請求項１の発明の複合加工工作機械１では、第１工程の旋削加工が終了すると、工具Ｔを工具主軸まわりに１８０°回転させて、同じ工具Ｔで第２工程の旋削加工を行うようにしたので、ワークＷの表裏に同一の工具で旋削加工を施すことができ、工程毎に別個の工具を用意する必要がなく、従って準備すべき工具の総数が少なくて済みコストを低減できる。
【００１０】
また、工具主軸１４の割り出し位置決めにおいては、固定体側に設けた固定側カップリングと回転体側に設けた回転側カップリングの両方に共通の結合カップリングを噛合させるようにしたので、固定側，回転側カップリングが多数の噛合歯の噛み合いにより結合されることから、工具主軸１４のクランプ強度を向上でき、かつ回転方向におけるクランプ位置精度を大きく向上でき、結果的に加工精度を向上できる効果がある。
【００１１】
請求項２の発明に係る複合加工工作機械によれば、ワークＷの表（右部）への旋削加工は、図５に示すように、ワークＷを左側の主軸４で把持し、工具主軸１４が該左側の主軸４に対向するように工具主軸台１２を割り出し位置決めし、該主軸４でワークＷを回転させることにより行う。また、ワークＷの裏（左部）への旋削加工は、図６に示すように、ワークＷを右側の主軸３で掴み変え、工具主軸台１２をＹ軸回りに１８０°旋回させて工具主軸１４が右側の主軸３に対向するように割り出し位置決めし、さらに図７に示すように、工具Ｔが図示上下に反転するように工具主軸１４を工具主軸まわりに１８０°回転させて割り出し位置決めし、該右側の主軸３でワークＷを旋回させることにより行う。
【００１２】
このように請求項２の発明の複合加工工作機械１では、第１工程の旋削加工が終了すると工具主軸台１２を１８０°旋回させるとともに工具主軸１４を１８０°回転させて同じ工具Ｔで第２工程の旋削加工を行うようにしたので、ワークＷの表裏に同一の工具で旋削加工を施すことができ、工程毎に別個の工具を用意する必要がなく、従って準備すべき工具の総数が少なくて済みコストを低減できる。
【００１３】
また上記工具主軸台１２，及び工具主軸１４の割り出し位置決めにおいては、固定体側に設けた固定側カップリングと回転体側に設けた回転側カップリングの両方に共通の結合カップリングを噛合させるようにしたので、固定側，回転側カップリングが多数の噛合歯の噛み合いにより結合されることから、工具主軸台１２，工具主軸１４のクランプ強度を向上でき、かつ回転方向におけるクランプ位置精度を大きく向上でき、結果的に加工精度を向上できる効果がある。
【００１４】
【発明の実施の形態】
以下、本発明の実施形態を添付図面に基づいて説明する。
図１〜図７は請求項１，２の発明の一実施形態による複合旋盤（複合加工工作機械）を説明するための図であり、図１，２は複合旋盤の斜視図、図３，４は上記旋盤の要部断面図、図５〜図７は上記旋盤の動作を説明するための模式図である。
【００１５】
図において、１はワークＷの表裏への旋削加工と回転工具加工の両方を行うことができるようにした複合旋盤であり、該複合旋盤１は、ベッド２の正面から見て右側にワークを把持する主軸台（主軸）３をＺ軸方向（左右方向）移動可能に設けるとともに、左側にワークを把持する主軸台（主軸）４を固定して設け、奥側に往復台５をＺ軸方向に移動可能に設けた概略構造を備えている。
【００１６】
上記主軸台３, ４にはワークをツメ６ａで把持するチャック６が設けられており、このチャック６は内蔵する主軸モータにより回転駆動される。また、上記往復台５の前下がりの傾斜面５ａ上には台座９がＸ軸方向に移動可能に搭載されており、該台座９に設けられた刃物台１０により工具主軸台１２がＸＺ軸平面内にてＹ軸回りに旋回割り出し位置決め可能に支持されている。そして該工具主軸台１２内には工具主軸１４がＺ軸回りに回転自在に、かつ回転割り出し位置決め可能に配設されている。
【００１７】
また、上記往復台５上には、多数の旋削工具及び回転工具２０を保持する工具マガジン２１を備えた工具交換装置２２が配設されており、この工具交換装置２２により上記工具主軸１４に装着された工具Ｔを所要の旋回工具又は回転工具に交換するようになっている。
【００１８】
上記工具主軸台１２の旋回軸１２ａは上記刃物台１０により軸受１１５を介して旋回自在に支持されている。該刃物台１０と工具主軸台１２との間には、該工具主軸台１２をＸＺ軸平面内にてＹ軸回りに旋回割り出し位置決めするための第２割り出し機構１３０が設けられており、該工具主軸台１２は図示しない割り出しモータで旋回駆動される。
【００１９】
上記第２割り出し機構１３０を示す図４において、工具主軸台１２の旋回軸線Ｂより右側部分はクランプ（固定）状態を、左側部分はアンクランプ（固定解除）状態をそれぞれ示している。この第２割り出し機構１３０は、３ピースカップリング型のものであり、上記刃物台１０の上端面１１２ａにボルト１２７により回転及び軸方向移動不能に固定された第２固定側カップリング１２３と、上記工具主軸台１２のフランジ部１１４ａにボルト１２８で固定されて該工具主軸台１２と共に回転する第２回転側カップリング１２４と、該両カップリング１２４，１２３と対向しかつ軸方向移動可能に配設された第２結合カップリング１２５とを備えている。
【００２０】
上記第２固定側カップリング１２３，第２回転側カップリング１２４は、円環状の板体の上面に多数の噛合歯１２３ａ，１２４ａを放射状にかつ等角度間隔で形成してなるものである。上記第２回転側カップリング１２４は上記第２固定側カップリング１２３内に位置し、該両カップリング１２３，１２４及び工具主軸台１２は同軸をなし、かつ上記多数の噛合歯１２３ａ，１２４ａの先端面は同一平面を成している。
【００２１】
上記第２結合カップリング１２５は環状のピストン状のものであり、上記両カップリング１２３，１２４との対向面に上記噛合歯１２３ａ，１２４ａに噛合可能の噛合歯１２５ａを形成してなるものである。この第２結合カップリング１２５は、シリンダ部材１２６の摺動溝１２６ａ内に進退可能に挿入配置され、付勢ばね１２６ｃにより後退方向（固定解除方向）に付勢されている。
【００２２】
上記結合カップリング１２５は、これと摺動溝１２６ａとで構成された油室１２６ｂ内に作動油が供給されると図示下方に移動してその噛合歯１２５ａを上記第２固定側，回転側カップリング１２３，１２４の噛合歯１２３ａ，１２４ａに噛合させ、これにより第２固定側，回転側カップリング１２３，１２４を回転方向に高精度で位置決めし、かつ強固に結合する。なお、上記シリンダ部材１２６はその外周縁の下端面が上記第２固定側カップリング１２３に重ね合わされ、ボルト１２７により上記刃物台１０に共締め固定されている。また１２８ａは上記工具主軸台１２と刃物台１０との間のシール用ラビリンス溝である。
【００２３】
また上記工具主軸１４は上記工具主軸台１２により軸受１５を介して回転自在に支持されている。該工具主軸台１２と工具主軸１４との間には該工具主軸１４を工具主軸回りに回転割り出し位置決めするための第１割り出し機構３０が設けられており、該工具主軸１４は図示しない駆動モータにより回転駆動される。
【００２４】
上記第１割り出し機構３０を示す図３において、工具主軸１４の回転軸線Ａより上側部分はクランプ状態を、下側部分はアンクランプ状態をそれぞれ示している。この第１割り出し機構３０は、３ピースカップリング型のものであり、上記工具主軸台１２の先端面１２ａにボルト２７により回転及び軸方向移動不能に固定された第１固定側カップリング２３と、上記工具主軸１４のフランジ部１４ａにボルト２８で固定されて該工具主軸１４と共に回転する第１回転側カップリング２４と、該両カップリング２４，２３と対向しかつ軸方向移動可能に配設された第１結合カップリング２５とを備えている。
【００２５】
上記第１固定側カップリング２３，第１回転側カップリング２４は、円環状の板体の前面に多数の噛合歯２３ａ，２４ａを放射状にかつ等角度間隔で形成してなるものである。上記第１回転側カップリング２４は上記第１固定側カップリング２３内に位置し、該両カップリング２３，２４及び工具主軸１４は同軸をなし、かつ上記多数の噛合歯２３ａ，２４ａの先端面は同一平面を成している。
【００２６】
上記第１結合カップリング２５は環状のピストン状のものであり、上記両カップリング２３，２４との対向面に上記噛合歯２３ａ，２４ａに噛合可能の噛合歯２５ａを形成してなるものである。この第１結合カップリング２５は、シリンダ部材２６の摺動溝２６ａ内に進退可能に挿入配置され、付勢ばね２６ｃにより後退方向に付勢されている。
【００２７】
上記結合カップリング２５は、これと摺動溝２６ａとで構成された油室２６ｂ内に作動油が供給されると図示右方に移動してその噛合歯２５ａを上記第１固定側，回転側カップリング２３，２４の噛合歯２３ａ，２４ａに噛合させ、これにより第１固定側，回転側カップリング２３，２４を回転方向に高精度で位置決めし、かつ強固に結合する。なお、上記シリンダ部材２６はその外周縁の右端面が上記第１固定側カップリング２３に重ね合わされ、ボルト２７により上記主軸台１２に共締め固定されている。
【００２８】
なお、上記工具主軸１４の前端面にはシールリング３１がボルト２９で工具ホルダ受容部３２と共締め固定されている。また上記シールリング３１と上記シリンダ２６との間にシール用ラビリンス溝２８ａが形成されている。
【００２９】
次に本実施形態の複合旋盤１における作用効果について説明する。なお、以下の説明文は内径加工に関するものである。
【００３０】
ワークＷの表（右部）に旋削加工を行う場合は、図５に示すように、ワークＷを左側の主軸４のチャック６で把持し、工具主軸１４に旋削工具Ｔを装着するとともに、工具主軸台１２を該左側の主軸４に対向させる。
【００３１】
この状態で、第２割り出し機構１３０において、シリンダ部材１２６の摺動溝１２６ａと第２結合カップリング１２５の端面とで形成された油室１２６ｂに連通する作動油の戻り通路が閉じられるとともに給油通路が開かれ、上記第２結合カップリング１２５が図示下方に移動し、該第２結合カップリング１２５の噛合歯１２５ａが第２固定側，回転側カップリング１２３，１２４の噛合歯１２３ａ，１２４ａの両方に噛み合い、これにより工具主軸台１２は刃物台１０に回転不能に固定される。
【００３２】
また第１割り出し機構３０において、上記と同様にシリンダ部材２６の摺動溝２６ａと第１結合カップリング２５の端面とで形成された油室２６ｂに連通する作動油の戻り通路が閉じられるとともに給油通路が開かれ、上記第１結合カップリング２５が図示右方に移動し、該第１結合カップリング２５の噛合歯２５ａが第１固定側，回転側カップリング２３，２４の噛合歯２３ａ，２４ａの両方に噛み合い、これにより工具主軸１４は工具主軸台１２に回転不能に固定される。
【００３３】
上記工具主軸台１２及び工具主軸１４を固定した状態で主軸台４によりワークＷを回転させつつ往復台５をＺ軸方向に移動させ刃物台１０をＸ軸方向に移動させることにより、ワークＷに旋削加工が施される。
【００３４】
また回転工具加工を行う場合には、上記工具主軸１４に回転工具を装着し、上記工具主軸台１２を固定した状態で工具主軸１４の固定を解除する。この場合、上記第１割り出し機構３０において、油室２６ｂに連通する作動油の供給通路が閉じられるとともに戻り通路が開かれ、上記第１結合カップリング２５がスプリング２６ｃの付勢力により図示左方に移動し、該第１結合カップリング２５の噛合歯２５ａの第１固定側，回転側カップリング２３，２４の噛合歯２３ａ，２４ａとの噛合が解かれる。これにより工具主軸１４は工具主軸台１２に対して回転自在となる。
【００３５】
上記工具主軸台１２を固定し、工具主軸１４の固定を解除し、かつ主軸台４の回転を止めた状態で、該工具主軸１４を駆動モータにより回転駆動しつつ刃物台１０をＸ軸方向に移動させ往復台５をＺ軸方向に移動させることにより、ワークＷに回転工具加工が施される。
【００３６】
また、ワークＷの裏（左部）への旋削加工を行う場合には、図６に示すように、ワークＷを右側の主軸台３のチャック６で掴み変え、工具主軸台１２をＹ軸回りに１８０°旋回させて該右側の主軸台３に対向させ、この状態で第２割り出し機構１３０により工具主軸台１２を刃物台１０に対して固定する。そしてさらに図７に示すように、工具Ｔが図示上下に反転するように工具主軸１４を工具主軸回りに１８０°回転させ、この状態で第１割り出し機構３０により工具主軸１４を工具主軸台１２に対して固定し、ワークＷの裏面に旋削加工を施す。
【００３７】
このように本実施形態では、上記左側主軸台４のワークの旋削加工が終了すると、工具Ｔが右側の主軸台３に対向するように工具主軸台１２を１８０旋回させて位置決めし、さらに工具Ｔの刃先が正規位置にくるように工具主軸１４を１８０°回転させて位置決めするようにしたので、同一の工具ＴによりワークＷの表面，裏面に旋削加工を施すことができ、工程毎に別の工具を必要とすることはなく、準備すべき工具総数が少なくて済み、コストを低減できる。
【００３８】
また本実施形態では、工具主軸台１２の割り出し位置決めにおいては、固定体（刃物台）側に設けた第２固定側カップリング１２３と回転体（工具主軸台）側に設けた第２回転側カップリング１２４の両方に共通の第２結合カップリング１２５を噛合させるようにしたので、また工具主軸１４の割り出し位置決めにおいては、固定体（工具主軸台）側に設けた第１固定側カップリング２３と回転体（工具主軸）側に設けた第１回転側カップリング２４の両方に共通の第１結合カップリング２５を噛合させるようにしたので、何れの場合も、固定側，回転側カップリングが多数の噛合歯の噛み合いにより結合されることから、工具主軸台１２，工具主軸１４のクランプ強度を向上でき、かつ回転方向におけるクランプ位置精度を大きく向上でき、結果的に加工精度を向上できる。
【００３９】
ここで上記実施形態では、ワークＷの内径加工を行なう場合を説明したが、上記実施形態旋盤１では、ワークＷの外径加工を行なうことも可能である。外形加工を行う場合には、図８に示すように、工具主軸台１２を第２割り出し機構１３０によりＸ軸方向に割り出し位置決めし、工具主軸１４を第１割り出し機構３０により同図の状態に割り出し位置決めし、この状態で左側の主軸４に把持されたワークＷに第１工程の加工を施す。続いてワークＷを右側の主軸３に掴みかえるとともに、上記第１割り出し機構３０により工具主軸１４を工具Ｔが左右反転するように１８０°回転させて割り出し位置決めし、この状態で第２工程の加工を行なうようにすれば良い。
【００４０】
この外径加工の場合にも上記同様に、工程毎に別の工具を必要とすることをなくしてコストを低減でき、また、加工精度を向上することができる。
【００４１】
なお、上記実施形態では、第１，第２割り出し機構３０，１３０の両方を備えている場合を説明したが、請求項１の発明では、該第２割り出し機構１３０は必ずしも備えている必要はなく、工具主軸台１２が図８の状態に固定されているものでも構わない。
【図面の簡単な説明】
【図１】本発明の一実施形態による複合旋盤の左側主軸のワークに加工を施す場合の斜視図である。
【図２】上記複合旋盤の工具主軸台の割り出し動作を示す斜視図である。
【図３】上記複合旋盤の第１割り出し機構部分の断面図である。
【図４】上記複合旋盤の第２割り出し機構部分の断面図である。
【図５】上記複合旋盤の動作を説明するための模式図である。
【図６】上記複合旋盤の動作を説明するための模式図である。
【図７】上記複合旋盤の動作を説明するための模式図である。
【図８】上記複合旋盤の動作を説明するための模式図である。
【図９】従来の複合旋盤の問題点を説明するための模式図である。
【符号の説明】
１ 複合旋盤（複合加工工作機械）
３, ４ 主軸
１０ 刃物台
１２ 工具主軸台
１４ 工具主軸
２３ 第１固定側カップリング
２３ａ 噛合歯
２４ 第１回転側カップリング
２４ａ 噛合歯
２５ 第１結合カップリング
２５ａ 噛合歯
３０ 第１割り出し位置決め機構
１２３ 第２固定側カップリング
１２３ａ 噛合歯
１２４ 第２回転側カップリング
１２４ａ 噛合歯
１２５ 第２結合カップリング
１２５ａ 噛合歯
１３０ 第２割り出し位置決め機構
Ｔ 旋削工具
Ｗ ワーク[0001]
BACKGROUND OF THE INVENTION
In the present invention, a tool spindle stock is provided on the tool post so that it can be pivotally indexed, the tool spindle is provided on the tool spindle stock so that it can be rotated and positioned, and two sets of spindles can be provided to perform turning on the front and back of the workpiece. It relates to the combined machining machine tool.
[0002]
[Prior art]
Conventionally, there is an NC lathe 53 shown in FIG. 9 as a multi-tasking machine tool that includes one turret and two spindles and can perform turning on the back and front of a workpiece.
[0003]
The conventional NC lathe 53 has a configuration in which two tools 54 and 55 are attached to one tool rest 50 and two main shafts 51 and 52 are provided to face each other on the Z axis. In this NC lathe 53, the work W is first rotated by the left spindle 51 to perform the first turning process with the left tool 54. When this machining is completed, the work W is held by the right spindle 52 and the right tool is turned. At 55, the second process is turned.
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned conventional multi-task machine tool, even if the tools used in the first and second steps are the same, it is necessary to prepare different tools for each step, which requires a large number of tools. There is a problem of high costs.
[0005]
The present invention has been made in view of the above-mentioned conventional problems, and machining using the same tool is performed with the same tool even if the steps are different, so that it is not necessary to prepare a tool for each step, thereby reducing costs. An object of the present invention is to provide a multi-tasking machine tool that can perform such processing.
[0006]
[Means for Solving the Problems]
In the invention of claim 1, as shown in FIG. 8, a tool spindle 12 is arranged on the tool post 10 in the X-axis direction, and the tool spindle 14 is provided on the tool spindle 12 so as to be indexed and positioned around the X-axis. Two sets of spindles 3 and 4 for rotationally driving the workpiece W are provided so as to face each other on the Z-axis. A turning tool T is mounted on the tool spindle 14, and the tool spindle 14 is fixed to the tool spindle base 12. In the combined machining machine tool 1 in which the workpiece W is rotated on the front and back of the workpiece W by rotationally driving the workpiece W with the spindles 3 and 4,
As shown in FIG. 3, the first indexing mechanism 30 for indexing and positioning the tool spindle 14 fixes the first fixed side coupling 23 having a large number of meshing teeth 23 a to the tool spindle stock 12, and the tool spindle 14 The first rotation side coupling 24 having a large number of meshing teeth 24a is coaxial with the first fixed side coupling 23, and the meshing teeth 23a, 24a of both couplings 23, 24 are in the same plane. A first coupling coupling 25 that is fixed and has a large number of meshing teeth 25a on the side of the tool head stock 12 is provided so as to be able to advance and retract toward the first stationary side and the rotation side couplings 23 and 24. The tool spindle 14 is machined by engaging or disengaging the engagement teeth 25a of the ring 25 with the engagement teeth 23a and 24a of both the first fixed side and rotation side couplings 23 and 24. The tool spindle 14 is rotated around the X axis when the workpiece of the one spindle 4 is processed and when the workpiece of the other spindle 3 is processed. It is characterized by being rotated 180 degrees.
[0007]
In the invention of claim 2, as shown in FIGS. 5 to 7, a tool spindle 12 is provided on the tool post 10 so that it can be indexed and positioned around the Y axis in the XZ-axis plane, and a tool spindle 14 is provided on the tool spindle 12. Are provided so as to be able to be indexed and positioned around the tool spindle, and two sets of spindles 3 and 4 for rotationally driving the workpiece W are provided so as to face each other on the Z axis, and a turning tool T is mounted on the tool spindle 14, and the tool spindle 14 is fixed to the tool spindle 12 and the tool spindle 12 is fixed to the tool rest 10, and the workpiece W is rotated by the spindles 3 and 4, thereby turning the front and back of the workpiece W. In the combined machining machine tool 1 to be applied,
As shown in FIG. 3, the first indexing mechanism 30 for indexing and positioning the tool spindle 14 fixes the first fixed side coupling 23 having a large number of meshing teeth 23 a to the tool spindle stock 12, and the tool spindle 14 The first rotation side coupling 24 having a large number of meshing teeth 24a is coaxial with the first fixed side coupling 23, and the meshing teeth 23a, 24a of both couplings 23, 24 are in the same plane. A first coupling coupling 25 that is fixed and has a large number of meshing teeth 25a on the side of the tool head stock 12 is provided so as to be able to advance and retract toward the first stationary side and the rotation side couplings 23 and 24. The tool spindle 14 is machined by engaging or disengaging the engagement teeth 25a of the ring 25 with the engagement teeth 23a and 24a of both the first fixed side and rotation side couplings 23 and 24. Fixed to the headstock 12, or to that of the structure to release the fixing,
As shown in FIG. 4, the second indexing mechanism 130 for indexing and positioning the tool head stock 12 fixes the second stationary side coupling 123 having a large number of meshing teeth 123 a to the tool rest 10, and the tool head stock. 12, the second rotation side coupling 124 having a large number of meshing teeth 124a is coaxial with the second fixed side coupling 123, and the meshing teeth 123a, 124a of both couplings 123, 124 are in the same plane. And a second coupling coupling 125 having a large number of meshing teeth 125a on the tool head stock 12 side is provided so as to be able to advance and retract toward the second stationary side and the rotation side couplings 123 and 124. The meshing teeth 125a of the coupling 125 are meshed with the meshing teeth 123a and 124a of both the second fixed side and rotation side couplings 123 and 124, The tool spindle stock 12 is fixed to the tool rest 10, or to that of the structure to release the fixing by the disengaging,
When turning the workpiece W of the one main spindle 4, the tool main spindle 14 is opposed to the one main spindle 4 on the Z axis (see FIG. 5), and the workpiece W of the other main spindle 3 is turned. Is characterized in that the tool spindle 14 is opposed to the other spindle 3 on the Z-axis (see FIG. 6) and rotated 180 degrees around the tool spindle (see FIG. 7).
[0008]
[Effects of the invention]
According to the multi-task machine tool according to the invention of claim 1, as shown in FIG. 8, in turning the workpiece W to the front (right part), the tool spindle 14 is indexed and positioned in the state shown in FIG. W is gripped by the left spindle 4 and the workpiece W is rotated by the spindle 4. Turning to the back (left part) of the workpiece W is performed by indexing and positioning by rotating the tool spindle 14 by 180 ° around the tool spindle so that the tool T is reversed by gripping the workpiece W with the right spindle 3. , By turning the workpiece W around the right spindle 3.
[0009]
Thus, in the multi-task machine tool 1 of the first aspect of the invention, when the turning process of the first step is completed, the tool T is rotated by 180 ° around the tool spindle, and the turning process of the second step is performed with the same tool T. Since this is done, it is possible to perform turning with the same tool on the front and back of the workpiece W, so there is no need to prepare separate tools for each process, so the total number of tools to be prepared is reduced and the cost is reduced. it can.
[0010]
Further, in the indexing positioning of the tool spindle 14, since the common coupling coupling is engaged with both the fixed side coupling provided on the fixed body side and the rotary side coupling provided on the rotary body side, Since the side coupling is coupled by meshing a large number of meshing teeth, the clamp strength of the tool spindle 14 can be improved, and the clamp position accuracy in the rotation direction can be greatly improved, resulting in an improvement in machining accuracy. .
[0011]
According to the multi-tasking machine tool of the second aspect of the present invention, as shown in FIG. 5, the turning of the workpiece W to the front surface (right side) is performed by holding the workpiece W with the left spindle 4 and the tool spindle 14. Is determined by indexing and positioning the tool spindle base 12 so as to face the left spindle 4 and rotating the workpiece W on the spindle 4. Further, as shown in FIG. 6, turning to the back (left part) of the workpiece W is performed by holding the workpiece W with the right spindle 3 and rotating the tool spindle 12 by 180 ° around the Y axis. 14 is positioned so that it faces the right spindle 3, and as shown in FIG. 7, the tool spindle 14 is rotated 180 ° around the tool spindle so that the tool T is turned upside down in the figure. This is done by turning the workpiece W around the right spindle 3.
[0012]
As described above, in the multi-task machine tool 1 of the invention according to the second aspect, when the turning process in the first step is completed, the tool spindle base 12 is rotated 180 ° and the tool spindle 14 is rotated 180 °, and the second tool T is used. Since the turning of the process is performed, it is possible to perform the turning with the same tool on both sides of the workpiece W, and it is not necessary to prepare a separate tool for each process, and therefore the total number of tools to be prepared is small. Cost.
[0013]
Further, in the indexing positioning of the tool spindle stock 12 and the tool spindle 14, a common coupling coupling is engaged with both the fixed side coupling provided on the fixed body side and the rotary side coupling provided on the rotating body side. Therefore, since the fixed side and rotating side couplings are coupled by meshing a large number of meshing teeth, the clamp strength of the tool spindle base 12 and the tool spindle 14 can be improved, and the clamp position accuracy in the rotational direction can be greatly improved. As a result, there is an effect that machining accuracy can be improved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.
1 to 7 are views for explaining a composite lathe (combined machining machine tool) according to an embodiment of the inventions of claims 1 and 2, wherein FIGS. 1 and 2 are perspective views of the composite lathe, and FIGS. Is a cross-sectional view of the main part of the lathe, and FIGS. 5 to 7 are schematic diagrams for explaining the operation of the lathe.
[0015]
In the figure, reference numeral 1 denotes a compound lathe capable of performing both turning and rotating tool machining on the front and back of the workpiece W. The compound lathe 1 holds the workpiece on the right side when viewed from the front of the bed 2. The main shaft base (main shaft) 3 is provided so as to be movable in the Z-axis direction (left-right direction), and the main shaft base (main shaft) 4 for gripping the workpiece is fixed on the left side, and the carriage 5 is arranged on the back side in the Z-axis direction It has a general structure that can be moved.
[0016]
The spindle stocks 3 and 4 are provided with chucks 6 for gripping the workpiece with the claws 6a, and the chucks 6 are driven to rotate by a built-in spindle motor. A pedestal 9 is mounted on the inclined surface 5a of the carriage 5 so as to be movable in the X-axis direction, and the tool spindle 12 is mounted on the pedestal 9 by the tool post 10 so that the tool spindle 12 is in the XZ-axis plane. It is supported so as to be capable of indexing and turning around the Y axis. A tool spindle 14 is disposed in the tool spindle table 12 so as to be rotatable about the Z axis and to be capable of rotational indexing.
[0017]
A tool changer 22 having a tool magazine 21 for holding a large number of turning tools and a rotary tool 20 is disposed on the carriage 5. The tool changer 22 attaches the tool changer 22 to the tool spindle 14. The formed tool T is replaced with a required turning tool or rotating tool.
[0018]
A turning shaft 12a of the tool head stock 12 is supported by the tool post 10 via a bearing 115 so as to be turnable. A second indexing mechanism 130 is provided between the tool rest 10 and the tool head stock 12 for pivoting and positioning the tool head stock 12 about the Y axis in the XZ axis plane. The headstock 12 is rotated by an indexing motor (not shown).
[0019]
In FIG. 4 showing the second indexing mechanism 130, the right part of the tool spindle base 12 from the turning axis B shows a clamped (fixed) state, and the left part shows an unclamped (fixed released) state. The second indexing mechanism 130 is of a three-piece coupling type, and includes a second fixed-side coupling 123 fixed to the upper end surface 112a of the tool post 10 by a bolt 127 so as not to be rotatable and axially movable. A second rotation-side coupling 124 that is fixed to the flange 114a of the tool head stock 12 with a bolt 128 and rotates together with the tool head stock 12, and faces both the couplings 124 and 123 and is disposed so as to be movable in the axial direction. The second coupling coupling 125 is provided.
[0020]
The second fixed side coupling 123 and the second rotation side coupling 124 are formed by forming a large number of meshing teeth 123a, 124a radially and equiangularly on the upper surface of an annular plate. The second rotation side coupling 124 is located in the second fixed side coupling 123, the couplings 123, 124 and the tool head stock 12 are coaxial, and the tips of the plurality of meshing teeth 123a, 124a. The planes are coplanar.
[0021]
The second coupling coupling 125 has an annular piston shape, and is formed by forming meshing teeth 125a capable of meshing with the meshing teeth 123a and 124a on the surface facing both the couplings 123 and 124. . The second coupling coupling 125 is inserted and disposed in the sliding groove 126a of the cylinder member 126 so as to be able to advance and retract, and is urged in the backward direction (fixing release direction) by the urging spring 126c.
[0022]
The coupling coupling 125 moves downward in the figure when hydraulic oil is supplied into an oil chamber 126b constituted by this and a sliding groove 126a, and the meshing teeth 125a are moved to the second fixed side and rotary side cups. The meshing teeth 123a and 124a of the rings 123 and 124 are engaged with each other, whereby the second fixed side and rotation side couplings 123 and 124 are positioned with high accuracy in the rotation direction and firmly coupled. The lower end surface of the outer peripheral edge of the cylinder member 126 is overlapped with the second fixed side coupling 123, and is fastened to the tool post 10 with bolts 127 together. Reference numeral 128 a denotes a labyrinth groove for sealing between the tool head stock 12 and the tool post 10.
[0023]
The tool spindle 14 is rotatably supported by the tool spindle stock 12 via a bearing 15. A first indexing mechanism 30 for indexing and positioning the tool spindle 14 around the tool spindle is provided between the tool spindle stock 12 and the tool spindle 14. The tool spindle 14 is driven by a drive motor (not shown). Driven by rotation.
[0024]
In FIG. 3 showing the first indexing mechanism 30, the upper part of the tool spindle 14 from the rotational axis A shows the clamped state, and the lower part shows the unclamped state. The first indexing mechanism 30 is of a three-piece coupling type, and a first fixed-side coupling 23 fixed to the distal end surface 12a of the tool head stock 12 by a bolt 27 so as not to rotate and move in the axial direction; A first rotation-side coupling 24 fixed to the flange portion 14a of the tool spindle 14 with a bolt 28 and rotating together with the tool spindle 14, and opposed to both the couplings 24 and 23 and arranged to be movable in the axial direction. The first coupling coupling 25 is provided.
[0025]
The first fixed side coupling 23 and the first rotation side coupling 24 are formed by forming a large number of meshing teeth 23a, 24a radially and equiangularly on the front surface of an annular plate. The first rotation side coupling 24 is located in the first fixed side coupling 23, the couplings 23, 24 and the tool spindle 14 are coaxial, and the front end surfaces of the plurality of meshing teeth 23a, 24a. Are coplanar.
[0026]
The first coupling coupling 25 has an annular piston shape, and is formed by forming meshing teeth 25a that can mesh with the meshing teeth 23a and 24a on the surface facing the couplings 23 and 24. . The first coupling coupling 25 is inserted into the sliding groove 26a of the cylinder member 26 so as to be able to advance and retreat, and is urged in the backward direction by the urging spring 26c.
[0027]
The coupling coupling 25 moves to the right in the drawing when hydraulic oil is supplied into an oil chamber 26b constituted by this and the sliding groove 26a, and the meshing teeth 25a are moved to the first fixed side and the rotary side. By engaging with the engaging teeth 23a, 24a of the couplings 23, 24, the first fixed side and rotating side couplings 23, 24 are positioned with high accuracy in the rotational direction and are firmly coupled. The right end surface of the outer peripheral edge of the cylinder member 26 is overlapped with the first fixed side coupling 23, and is fastened and fixed to the headstock 12 with bolts 27.
[0028]
A seal ring 31 is fastened to the front end surface of the tool spindle 14 together with a tool holder receiving portion 32 by bolts 29. Further, a labyrinth groove 28a for sealing is formed between the seal ring 31 and the cylinder 26.
[0029]
Next, the effect in the composite lathe 1 of this embodiment is demonstrated. In addition, the following description is related to inner diameter processing.
[0030]
When performing a turning process on the surface (right part) of the workpiece W, as shown in FIG. 5, the workpiece W is gripped by the chuck 6 of the left spindle 4 and the turning tool T is mounted on the tool spindle 14, and the tool The head stock 12 is made to face the left main shaft 4.
[0031]
In this state, in the second indexing mechanism 130, the hydraulic oil return passage communicating with the oil chamber 126b formed by the sliding groove 126a of the cylinder member 126 and the end face of the second coupling coupling 125 is closed and the oil supply passage. The second coupling coupling 125 moves downward in the figure, and the meshing teeth 125a of the second coupling coupling 125 are both the meshing teeth 123a and 124a of the second fixed side and rotation side couplings 123 and 124. As a result, the tool head stock 12 is fixed to the tool post 10 in a non-rotatable manner.
[0032]
Further, in the first indexing mechanism 30, the hydraulic oil return passage communicating with the oil chamber 26 b formed by the sliding groove 26 a of the cylinder member 26 and the end face of the first coupling coupling 25 is closed and lubricated in the same manner as described above. The passage is opened, the first coupling coupling 25 moves to the right in the figure, and the meshing teeth 25a of the first coupling coupling 25 are meshed with the meshing teeth 23a, 24a of the first fixed side and rotation side couplings 23, 24. Thus, the tool spindle 14 is fixed to the tool spindle base 12 in a non-rotatable manner.
[0033]
While the tool spindle 12 and the tool spindle 14 are fixed, the carriage 5 is moved in the Z-axis direction while the workpiece W is rotated by the spindle table 4 and the tool post 10 is moved in the X-axis direction. Turning is performed.
[0034]
When performing rotary tool machining, a rotary tool is mounted on the tool spindle 14 and the tool spindle 14 is released from being fixed while the tool spindle base 12 is fixed. In this case, in the first indexing mechanism 30, the hydraulic oil supply passage communicating with the oil chamber 26b is closed and the return passage is opened, and the first coupling coupling 25 is moved to the left in the drawing by the urging force of the spring 26c. It moves and the meshing of the meshing teeth 25a of the first coupling coupling 25 with the meshing teeth 23a, 24a of the first fixed side and the rotation side couplings 23, 24 is released. As a result, the tool spindle 14 is rotatable with respect to the tool spindle stock 12.
[0035]
In the state where the tool spindle 12 is fixed, the tool spindle 14 is released, and the rotation of the spindle 4 is stopped, the tool spindle 14 is rotated in the X-axis direction while the tool spindle 14 is rotated by a drive motor. By moving the carriage 5 in the Z-axis direction, the workpiece W is subjected to rotary tool machining.
[0036]
Also, when turning to the back (left part) of the workpiece W, as shown in FIG. 6, the workpiece W is gripped by the chuck 6 of the right spindle stock 3, and the tool spindle 12 is rotated around the Y axis. The tool head stock 12 is fixed to the tool rest 10 by the second indexing mechanism 130 in this state. Further, as shown in FIG. 7, the tool spindle 14 is rotated by 180 ° around the tool spindle so that the tool T is turned upside down in the drawing, and in this state, the tool spindle 14 is moved to the tool spindle base 12 by the first indexing mechanism 30. The workpiece W is fixed, and the back surface of the workpiece W is turned.
[0037]
As described above, in this embodiment, when the turning of the workpiece of the left head stock 4 is finished, the tool head stock 12 is rotated 180 times and positioned so that the tool T faces the right head stock 3, and further the tool T Since the tool spindle 14 is rotated by 180 ° so that the cutting edge is positioned at the normal position, the front and back surfaces of the workpiece W can be turned with the same tool T, and each process has a different process. There is no need for tools, the total number of tools to be prepared is small, and the cost can be reduced.
[0038]
Further, in the present embodiment, in the indexing positioning of the tool head stock 12, the second fixed side coupling 123 provided on the fixed body (tool post) side and the second rotation side cup provided on the rotary body (tool head stock) side. Since the second coupling coupling 125 common to both of the rings 124 is engaged, and in the indexing positioning of the tool spindle 14, the first fixed-side coupling 23 provided on the fixed body (tool spindle stock) side and Since the common first coupling coupling 25 is engaged with both of the first rotation side couplings 24 provided on the rotating body (tool spindle) side, in either case, there are many fixed side and rotation side couplings. As a result, the clamping strength of the tool head stock 12 and the tool spindle 14 can be improved, and the clamp position accuracy in the rotation direction can be greatly improved. It can consequently improve the processing accuracy.
[0039]
Here, in the embodiment, the case where the inner diameter machining of the workpiece W is performed has been described. However, in the embodiment lathe 1, the outer diameter machining of the workpiece W can also be performed. When performing external machining, as shown in FIG. 8, the tool spindle base 12 is indexed and positioned in the X-axis direction by the second indexing mechanism 130, and the tool spindle 14 is indexed by the first indexing mechanism 30 to the state shown in FIG. In this state, the workpiece W gripped by the left main spindle 4 is processed in the first step. Subsequently, the workpiece W is grasped by the right spindle 3 and the tool spindle 14 is rotated by 180 ° so that the tool T is reversed left and right by the first indexing mechanism 30 and is indexed and positioned in this state. Should be done.
[0040]
Also in the case of this outer diameter machining, similarly to the above, it is possible to reduce the cost without requiring a separate tool for each process, and to improve the machining accuracy.
[0041]
In the above embodiment, the case where both the first and second indexing mechanisms 30 and 130 are provided has been described. However, in the invention of claim 1, the second indexing mechanism 130 is not necessarily provided. The tool head stock 12 may be fixed to the state shown in FIG.
[Brief description of the drawings]
BRIEF DESCRIPTION OF DRAWINGS FIG. 1 is a perspective view when machining a work of a left main spindle of a composite lathe according to an embodiment of the present invention.
FIG. 2 is a perspective view showing an indexing operation of a tool head stock of the composite lathe.
FIG. 3 is a cross-sectional view of a first indexing mechanism portion of the composite lathe.
FIG. 4 is a cross-sectional view of a second indexing mechanism portion of the composite lathe.
FIG. 5 is a schematic diagram for explaining the operation of the composite lathe.
FIG. 6 is a schematic diagram for explaining the operation of the composite lathe.
FIG. 7 is a schematic diagram for explaining the operation of the composite lathe.
FIG. 8 is a schematic diagram for explaining the operation of the composite lathe.
FIG. 9 is a schematic diagram for explaining problems of a conventional composite lathe.
[Explanation of symbols]
1 Combined lathe (Composite machine tool)
3, 4 Spindle 10 Tool post 12 Tool head stock 14 Tool spindle 23 First fixed coupling 23a Engagement tooth 24 First rotation coupling 24a Engagement tooth 25 First coupling coupling 25a Engagement tooth 30 First indexing positioning mechanism 123 Second fixed coupling 123a meshing tooth 124 Second rotation coupling 124a meshing tooth 125 Second coupling coupling 125a meshing tooth 130 Second indexing positioning mechanism T Turning tool W Workpiece

Claims (2)

刃物台に工具主軸台をＸ軸方向に配置し、該工具主軸台に工具主軸をＸ軸回りに割り出し位置決め可能に設け、ワークを回転駆動する主軸をＺ軸上にて対向するように２組設け、上記工具主軸に旋削工具を装着し、該工具主軸を工具主軸台に対して固定し、上記主軸でワークを回転駆動することにより該ワークの表裏に旋削加工を施すようにした複合加工工作機械において、
上記工具主軸を割り出し位置決めする第１割り出し機構を、上記工具主軸台に多数の噛合歯を有する第１固定側カップリングを固定し、上記工具主軸に多数の噛合歯を有する第１回転側カップリングを、上記第１固定側カップリングと同軸をなし、かつ両カップリングの噛合歯が同一平面をなすように固定し、上記工具主軸台側に多数の噛合歯を有する第１結合カップリングを上記第１固定側，回転側カップリングに向かって進退可能に設け、該第１結合カップリングの噛合歯を第１固定側，回転側カップリングの両方の噛合歯に噛合させ、又は離脱させることにより工具主軸を工具主軸台に固定し、又は該固定を解除する構成のものとし、上記一方の主軸のワークの加工時と上記他方の主軸のワークの加工とで上記工具主軸をＸ軸回りに１８０度回転させるようにしたことを特徴とする複合加工工作機械。The tool spindle is arranged in the X-axis direction on the tool post, and the tool spindle is provided on the tool spindle so that the tool spindle can be indexed and positioned around the X axis. A multi-tasking machine in which a turning tool is mounted on the tool spindle, the tool spindle is fixed to a tool spindle base, and the work is rotated by the spindle to perform turning on the front and back of the work. In the machine
A first indexing mechanism for indexing and positioning the tool spindle; a first fixed coupling having a plurality of meshing teeth on the tool spindle base; and a first rotating side coupling having a plurality of meshing teeth on the tool spindle Is fixed so that the meshing teeth of both couplings are in the same plane, and the first coupling coupling having a large number of meshing teeth on the tool head stock side is By being provided so as to be able to advance and retreat toward the first fixed side and the rotating side coupling, the meshing teeth of the first coupling coupling are engaged with or disengaged from both the meshing teeth of the first fixed side and the rotating side coupling. The tool spindle is fixed to the tool spindle base, or the fixed state is released. The tool spindle is rotated around the X axis by the machining of the workpiece of the one spindle and the machining of the workpiece of the other spindle. Combined machining machine tool is characterized in that so as to rotate 0 degrees. 刃物台に工具主軸台をＸＺ軸平面内でＹ軸回りに割り出し位置決め可能に設け、該工具主軸台に工具主軸を工具主軸回りに割り出し位置決め可能に設け、ワークを回転駆動する主軸をＺ軸上にて対向するように２組設け、上記工具主軸に旋削工具を装着し、該工具主軸を工具主軸台に対して固定するとともに該工具主軸台を刃物台に対して固定し、上記主軸でワークを回転駆動することにより該ワークの表裏に旋削加工を施すようにした複合加工工作機械において、
上記工具主軸を割り出し位置決めする第１割り出し機構を、上記工具主軸台に多数の噛合歯を有する第１固定側カップリングを固定し、上記工具主軸に多数の噛合歯を有する第１回転側カップリングを、上記第１固定側カップリングと同軸をなし、かつ両カップリングの噛合歯が同一平面をなすように固定し、上記工具主軸台側に多数の噛合歯を有する第１結合カップリングを上記第１固定側，回転側カップリングに向かって進退可能に設け、該第１結合カップリングの噛合歯を第１固定側，回転側カップリングの両方の噛合歯に噛合させ、又は離脱させることにより工具主軸を工具主軸台に固定し、又は該固定を解除する構成のものとし、
上記工具主軸台を割り出し位置決めする第２割り出し機構を、上記刃物台に多数の噛合歯を有する第２固定側カップリングを固定し、上記工具主軸台に多数の噛合歯を有する第２回転側カップリングを、上記第２固定側カップリングと同軸をなし、かつ両カップリングの噛合歯が同一平面をなすように固定し、上記工具主軸台側に多数の噛合歯を有する第２結合カップリングを上記第２固定側，回転側カップリングに向かって進退可能に設け、該第２結合カップリングの噛合歯を第２固定側，回転側カップリングの両方の噛合歯に噛合させ、又は離脱させることにより工具主軸台を刃物台に固定し、又は該固定を解除する構成のものとし、
上記一方の主軸のワークに旋削加工を施す場合は工具主軸をＺ軸上にて一方の主軸に対向させ、他方の主軸のワークに旋削加工を施す場合は工具主軸をＺ軸上にて他方の主軸に対向させ、かつ工具主軸回りに１８０度回転させるようにしたことを特徴とする複合加工工作機械。The tool spindle is provided on the tool post so that it can be indexed and positioned around the Y axis in the XZ-axis plane, the tool spindle is provided on the tool spindle so that it can be indexed and positioned around the tool spindle, and the spindle that drives the workpiece on the Z axis 2 sets are provided so as to face each other, a turning tool is mounted on the tool spindle, the tool spindle is fixed to the tool spindle, and the tool spindle is fixed to the tool rest. In a multi-task machine tool in which turning is performed on the front and back of the workpiece by rotationally driving,
A first indexing mechanism for indexing and positioning the tool spindle; a first fixed coupling having a plurality of meshing teeth on the tool spindle base; and a first rotating side coupling having a plurality of meshing teeth on the tool spindle Is fixed so that the meshing teeth of both couplings are in the same plane, and the first coupling coupling having a large number of meshing teeth on the tool head stock side is By being provided so as to be able to advance and retreat toward the first fixed side and the rotating side coupling, the meshing teeth of the first coupling coupling are engaged with or disengaged from both the meshing teeth of the first fixed side and the rotating side coupling. The tool spindle is configured to be fixed to the tool spindle table or to be released.
A second indexing mechanism for indexing and positioning the tool spindle, a second fixed side coupling having a number of meshing teeth on the tool post, and a second rotating side cup having a number of meshing teeth on the tool spindle A second coupling coupling having a plurality of meshing teeth on the tool head stock side, wherein the ring is fixed so that the coupling teeth of both couplings are coplanar with the second stationary coupling; The second fixed side and the rotating side coupling are provided so as to be able to advance and retract, and the meshing teeth of the second coupling coupling are engaged with or disengaged from the meshing teeth of both the second fixed side and the rotating side coupling. The tool head stock is fixed to the tool rest by the above, or the fixing is released.
When turning the workpiece of one of the above spindles, the tool spindle is made to face one spindle on the Z axis, and when turning the workpiece of the other spindle, the tool spindle is turned on the other side of the Z axis. A multi-tasking machine tool characterized by facing the main shaft and rotating 180 degrees around the tool main shaft.
JP35680597A 1997-12-25 1997-12-25 Compound machine tool Expired - Fee Related JP3966972B2 (en)

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JP35680597A JP3966972B2 (en) 1997-12-25 1997-12-25 Compound machine tool

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JPH11188506A JPH11188506A (en) 1999-07-13
JP3966972B2 true JP3966972B2 (en) 2007-08-29

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JP4689814B2 (en) * 2000-11-27 2011-05-25 株式会社森精機製作所 Machine tool rotation indexing device
JP2002273602A (en) * 2001-03-21 2002-09-25 Big Alpha Co Ltd Lathe with automatic tool changing device
CN106181574A (en) * 2015-05-07 2016-12-07 宏家达机电股份有限公司 CNC indexing table apparatus

Cited By (2)

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Publication number Priority date Publication date Assignee Title
US20160067783A1 (en) * 2014-09-05 2016-03-10 Mazak Corporation Vertical Machine Tool Apparatus And Method
US10071427B2 (en) * 2014-09-05 2018-09-11 Mazak Corporation Vertical machine tool apparatus and method

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