JP2014000614A - Grinding device - Google Patents

Grinding device Download PDF

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JP2014000614A
JP2014000614A JP2012135961A JP2012135961A JP2014000614A JP 2014000614 A JP2014000614 A JP 2014000614A JP 2012135961 A JP2012135961 A JP 2012135961A JP 2012135961 A JP2012135961 A JP 2012135961A JP 2014000614 A JP2014000614 A JP 2014000614A
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grindstone
unit
grinding
workpiece
dress
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JP5962242B2 (en
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Daisuke Kondo
大介 近藤
Daiichi Sasatsuki
大一 笹月
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NSK Ltd
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NSK Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
    • B24B19/02—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding grooves, e.g. on shafts, in casings, in tubes, homokinetic joint elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B53/00—Devices or means for dressing or conditioning abrasive surfaces
    • B24B53/06—Devices or means for dressing or conditioning abrasive surfaces of profiled abrasive wheels

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Automatic Control Of Machine Tools (AREA)
  • Machine Tool Sensing Apparatuses (AREA)
  • Grinding And Polishing Of Tertiary Curved Surfaces And Surfaces With Complex Shapes (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a grinding device capable of simplifying work and capable of enhancing accuracy by dispensing with teaching work, by automatically performing a series of grinding work, without stopping the device once a work is arranged even the work is a large bearing ring or the like.SOLUTION: A bearing detecting part 30 comprises a contactor 31, and detects a position and a shape of a bearing inner ring 1 by bring the contactor 31 into contact with the bearing inner ring 1. A grinding wheel operation part 50 comprises a servomotor, and moves a grinding wheel 41 by driving the servomotor of the grinding wheel operation part 50. A coordinate system-related information group such as position-shape information based on an origin Owith the main shaft rotational center as a reference, is stored in a storage part 71 of a control part 70. The control part 70 positions the grinding wheel 41 by controlling the grinding wheel operation part 50 by integrating respective coordinate systems of the bearing inner ring 1, the grinding wheel 41 and a dress 61 on the basis of the coordinate system-related information group in the storage part 71 and driving information on the servomotor of the grinding wheel operation part 50.

Description

本発明は、研削加工装置に関し、より詳細には、大型の軸受軌道輪を研削する研削加工装置に関する。   The present invention relates to a grinding apparatus, and more particularly to a grinding apparatus for grinding a large bearing race.

従来の一般的な研削加工装置を用いて、例えば、ワーク（加工対象）として軸受軌道輪を研削加工する際には、事前に軸受軌道輪の外周面などの加工面に砥石を当てて、研削加工装置に加工点を教示するティーチング（当て込み）作業が必要であった。加えて、砥石を適宜仕上げドレスするためにも、そのドレス点についてティーチング作業が必要であった。これらティーチング作業を適切に行わないと、加工精度に影響が出てしまうばかりか、機械の衝突を招く可能性がある。このため、この研削加工前のティーチング作業は非常に重要な前工程であり、作業者の高いスキルを要するものであった。また、前工程で適切にティーチング作業を行なっても、加工精度を維持するため複数回に分けて少しずつ研削加工を行う必要があるため、加工工程においても多大な労力を費やしていた。   For example, when grinding a bearing race as a workpiece (working object) using a conventional general grinding machine, a grinding wheel is applied to the machining surface such as the outer peripheral surface of the bearing race in advance to perform grinding. Teaching work to teach the processing point to the processing equipment was necessary. In addition, teaching work is necessary for the dress point in order to dress the grinding wheel appropriately. If these teaching operations are not performed properly, not only the machining accuracy is affected, but also a machine collision may occur. For this reason, the teaching work before grinding is a very important pre-process, and requires high skill of the operator. In addition, even if teaching work is properly performed in the previous process, it is necessary to perform grinding work in a plurality of times in order to maintain the machining accuracy.

また、近年では軸受の多機能化に伴い、多品種少量生産のみならず複雑な形状の加工にも対応する必要があり、１台の研削加工装置において研削加工する面も複数、使用する砥石も複数、加えてドレスも複数となってきている。このため、近年、ティーチング作業における負担がますます増加する傾向にある。特に、研削加工を初めて行う部品の場合、又はインプロゲージが使用できない大型の軸受軌道輪の段取り替えの場合には、その寸法調整において加工と測定とを繰り返し行う必要があるため、更に多くの労力、時間を費やしていた。   Also, in recent years, with the increase in functionality of bearings, it is necessary to support not only multi-product low-volume production but also complex shape machining, and there are multiple grinding surfaces in a single grinding machine and the grindstone used. There are also multiple dresses as well as multiple dresses. For this reason, in recent years, the burden on teaching work has been increasing. In particular, in the case of parts that are to be ground for the first time, or when changing the setup of a large bearing ring that cannot use an impro-gauge, it is necessary to repeat processing and measurement in the dimensional adjustment, so more labor is required. Was spending time.

そこで、ティーチング作業の軽減化を図る従来技術としては、シミュレーションによって機械干渉の有無を数値的に判断し、その状態を装置に設置される立体表示画面で作業者に提示するものが知られている（例えば、特許文献１参照）。また、自動的に加工原点と加工対象との距離を測定し、加工対象を順次取り替えて連続加工する場合にも、先の加工原点と距離とを逐次比較し、差があった場合には補正して加工を行うものも知られている（例えば、特許文献２参照）。さらに、加工対象を目標形状に加工するため、ワークの現形状を、インプロゲージを用いて検出するものが知られている（例えば、特許文献３参照）。   Therefore, as a conventional technique for reducing the teaching work, there is known a technique that numerically determines the presence or absence of mechanical interference by simulation and presents the state to a worker on a stereoscopic display screen installed in the apparatus. (For example, refer to Patent Document 1). Also, when measuring the distance between the machining origin and the machining object automatically, and sequentially changing the machining object to perform continuous machining, the previous machining origin and the distance are sequentially compared and corrected if there is a difference. In addition, there is also known one that performs processing (see, for example, Patent Document 2). Furthermore, in order to process the object to be processed into a target shape, there is known one that detects the current shape of a workpiece using an impro gauge (for example, see Patent Document 3).

特開２０１０−７６００５号公報JP 2010-76005 A 特許第４０８８０７１号Patent No. 4088071 特公平０１２３２７２号公報Japanese Patent Publication No. 0123272

しかしながら、上記特許文献１、２に記載のものはいずれも、ティーチング作業の効率化、例えば大型の軸受軌道輪の研削加工において段取り替えなどにおける寸法調整の効率化については考慮されておらず、また、ティーチング作業の不要化の技術的手段について具体的に提示するものではない。また、上記特許文献３のものは、インプロゲージを用いるものであり、検出できる面が一面だけであり、大型のワークでは精度が低下する、又は段取り性が悪いなど改善の余地がある。   However, none of the ones described in Patent Documents 1 and 2 takes into account the efficiency of teaching work, for example, the efficiency of dimensional adjustment in setup change in grinding of a large bearing ring, The technical means for making teaching work unnecessary is not specifically presented. Moreover, the thing of the said patent document 3 uses an impro gauge, and there is room for improvement, such as a precision decreasing in a large sized workpiece | work or bad setup property, in which only one surface can be detected.

本発明は、前述の事情に鑑みてなされたものであり、その目的は、例えば、軸受軌道輪などのワークに対する研削加工において、大型のものであってもワークを一度設置すれば装置を停止することなく一連の研削加工を自動で行い、ティーチング作業を不要にして作業の簡便化（スキルレス化）及び高精度化を図ることができる研削加工装置を提供することにある。   The present invention has been made in view of the above-described circumstances. For example, in grinding processing for a work such as a bearing race, the apparatus is stopped once the work is installed even if the work is large. It is an object of the present invention to provide a grinding apparatus capable of automatically performing a series of grinding processes without using a teaching work and simplifying the work (skillless) and improving the accuracy.

本発明の上記目的は、下記の構成により達成される。
（１）ワークを保持すると共に、ワークの軸線回りにワークを回転駆動するワーク回転テーブル部と、ワーク回転テーブル部に保持されたワークの位置及び形状を検出するワーク検出部と、砥石を保持すると共に、砥石の軸線回りに砥石を回転駆動する砥石回転部と、先端部に砥石回転部が固設され、砥石を移動させる砥石操作部と、ドレスを有し、砥石に対して仕上げドレスを行う砥石ドレス部と、記憶部を有すると共に、ワーク回転テーブル部、ワーク検出部、砥石回転部、砥石操作部、砥石ドレス部の動作をそれぞれ制御する制御部と、を備える研削加工装置であって、ワーク検出部は、接触子を有し、接触子をワークに接触させることでワークの位置及び形状を検出し、砥石操作部はサーボモータを有し、砥石操作部のサーボモータが駆動することで砥石を移動させ、制御部の記憶部には、ワークの、ワーク基準原点を基準とした位置形状情報と、砥石の、砥石基準原点を基準とした位置形状情報と、砥石回転部での砥石の取付位置情報と、砥石操作部での砥石回転部の取付位置情報と、砥石操作部の、所定の基準座標系を基準とした座標系情報と、砥石ドレス部の、所定の基準座標系を基準とした座標系情報と、の座標系関連情報群が格納され、制御部は、記憶部の座標系関連情報群、及び砥石操作部のサーボモータの駆動情報に基づき、ワーク、砥石、及びドレスそれぞれの座標系を統合して砥石操作部を制御することにより、砥石の位置決めを行うことを特徴とする研削加工装置。
（２）記憶部には、ワークの目標形状情報が更に格納されており、ワーク検出部は、ワークの現形状を検出し、制御部は、目標形状情報と、ワーク検出部が検出した現形状と、を比較してワークに対する残研削加工量を算出して砥石操作部を制御することを特徴とする（１）に記載の研削加工装置。
（３）砥石の移動は並進移動のみならず回転移動も含み、制御部は、砥石の回転移動をも考慮して砥石操作部を制御することを特徴とする（１）又は（２）に記載の砥石加工装置。
（４）砥石ドレス部はサーボモータを有し、砥石ドレス部のサーボモータが駆動することによりドレスを移動させ、砥石ドレス部のドレスの移動は回転移動を含み、制御部は、ドレスの回転移動をも考慮して砥石操作部及び砥石ドレス部を制御することを特徴とする（１）〜（３）のいずれか１つに記載の研削加工装置。
（５）制御部は、ワークに対し実際に研削加工する前に、少なくとも砥石操作部を制御して、ワーク及びドレスに対し所定の余裕隙間をもった試し動作を行うことを特徴とする（１）〜（４）のいずれか１つに記載の研削加工装置。
（６）ワークは、大型の軸受軌道輪であることを特徴とする（１）〜（５）のいずれか１つに記載の研削加工装置。 The above object of the present invention can be achieved by the following constitution.
(1) While holding a work, the work rotation table part which rotates a work around the axis of a work, the work detection part which detects the position and shape of the work held at the work rotation table part, and a grindstone are held. At the same time, there is a grindstone rotating section that rotates the grindstone around the axis of the grindstone, a grindstone rotating section that is fixed at the tip, and a grindstone operating section that moves the grindstone. A grinding device having a grindstone dressing unit, a storage unit, and a control unit that controls the operation of the work rotation table unit, the workpiece detection unit, the grindstone rotation unit, the grindstone operation unit, and the grindstone dressing unit, The workpiece detection unit has a contact and detects the position and shape of the workpiece by bringing the contact into contact with the workpiece. The grinding wheel operation unit has a servo motor. The servo motor of the grinding wheel operation unit The wheel is moved by driving, and in the storage unit of the control unit, the position and shape information of the workpiece with reference to the workpiece reference origin, the position and shape information of the grindstone with reference to the reference point of the grinding wheel, and the wheel rotation unit Whetstone mounting position information, whetstone operating section whetstone rotating section mounting position information, whetstone operating section coordinate system information based on a predetermined reference coordinate system, whetstone dressing section predetermined reference Coordinate system information based on the coordinate system and a coordinate system related information group of the coordinate system are stored, and the control unit, based on the coordinate system related information group of the storage unit and the servo motor drive information of the grindstone operating unit, A grinding apparatus for positioning a grindstone by integrating a coordinate system of each of the dresses and controlling a grindstone operation unit.
(2) The target shape information of the workpiece is further stored in the storage unit, the workpiece detection unit detects the current shape of the workpiece, and the control unit detects the target shape information and the current shape detected by the workpiece detection unit. And the grinding wheel operation unit is controlled by calculating the amount of remaining grinding for the workpiece, and the grinding device according to (1).
(3) The movement of the grindstone includes not only the translational movement but also the rotational movement, and the control unit controls the grindstone operation unit in consideration of the rotational movement of the grindstone. (1) or (2) Grinding wheel processing equipment.
(4) The grindstone dressing section has a servo motor, and the servomotor of the grindstone dressing section is driven to move the dress, and the movement of the dressing of the grindstone dressing section includes rotational movement, and the control section rotates the dress. The grinding device according to any one of (1) to (3), wherein the grindstone operating unit and the grindstone dressing unit are controlled in consideration of the above.
(5) The control unit controls at least the grindstone operation unit and performs a trial operation with a predetermined margin on the workpiece and the dress before actually grinding the workpiece (1). The grinding apparatus according to any one of (4) to (4).
(6) The grinding apparatus according to any one of (1) to (5), wherein the workpiece is a large bearing ring.

本発明の研削加工装置によれば、ワーク検出部は、接触子を有し、接触子をワークに接触させることでワークの位置及び形状を検出し、砥石操作部はサーボモータを有し、砥石操作部のサーボモータが駆動することで砥石を移動させ、制御部の記憶部には、ワークの、ワーク基準原点を基準とした位置形状情報と、砥石の、砥石基準原点を基準とした位置形状情報と、砥石回転部での砥石の取付位置情報と、砥石操作部での砥石回転部の取付位置情報と、砥石操作部の、所定の基準座標系を基準とした座標系情報と、砥石ドレス部の、所定の基準座標系を基準とした座標系情報と、の座標系関連情報群が格納され、制御部は、記憶部の座標系関連情報群、及び砥石操作部のサーボモータの駆動情報に基づき、ワーク、砥石、及びドレスそれぞれの座標系を統合して砥石操作部を制御することにより、砥石の位置決めを行う。このため、ワークを装置にセットすれば一連の研削加工を自動で行い、作業者が何らかの作業をすることがないため、ティーチング作業を不要にして作業の簡便化（スキルレス化）を図ることができる。即ち、ワーク、砥石及びドレスの座標系を統合するため、装置からワークを取り外すことなく、研削加工時の砥石の移動量を自動的に決定することができ、また、仕上げドレスも自動的に行うことができる。さらに、ワーク検出部は接触子を用いてワークの位置及び形状を検出するため、複数の面を１つの接触子で検出することができる。これにより、大型のワークであってもワークを一度設置すれば装置を停止し取り出して別途測定する必要がなく研削加工を行うことができ、作業時間及び作業負担の低減化及び高精度化を図ることができる。さらに、複数の砥石を装置に着脱自在に装着できるものとすれば、砥石を適宜変更することができ、例えば複数の面を有する複雑な形状でもワークを取り外すことなく、研削加工を行うことができる。   According to the grinding apparatus of the present invention, the workpiece detection unit has a contact, and the position and shape of the workpiece are detected by bringing the contact into contact with the workpiece, the grindstone operation unit has a servo motor, and the grindstone The servomotor of the operation unit is driven to move the grindstone. The storage unit of the control unit stores the position and shape information of the workpiece on the basis of the workpiece reference origin, and the position and shape of the grindstone on the basis of the reference point of the grinding stone. Information, mounting position information of the grindstone at the grindstone rotating section, mounting position information of the grindstone rotating section at the grindstone operating section, coordinate system information based on a predetermined reference coordinate system of the grindstone operating section, and a grindstone dress The coordinate system related information group of the reference standard coordinate system of the unit and the coordinate system related information group are stored, the control unit is the coordinate system related information group of the storage unit, and the drive information of the servo motor of the grindstone operating unit Based on the workpiece, whetstone and dress By controlling the grinding wheel operating section integrates the coordinate system, to position the grinding wheel. For this reason, if a workpiece is set in the apparatus, a series of grinding processes are automatically performed, and the operator does not perform any work. Therefore, teaching work is not necessary and the work can be simplified (less skill). it can. That is, since the coordinate system of the workpiece, grindstone, and dress is integrated, the amount of movement of the grindstone during grinding can be automatically determined without removing the workpiece from the apparatus, and the finishing dress is also performed automatically. be able to. Furthermore, since the workpiece | work detection part detects the position and shape of a workpiece | work using a contactor, it can detect a some surface with one contactor. As a result, even for large workpieces, once the workpiece is installed, it is possible to perform grinding without the need to stop and take out the device and perform separate measurements, thereby reducing working time and workload and increasing accuracy. be able to. Furthermore, if a plurality of grindstones can be detachably attached to the apparatus, the grindstone can be appropriately changed, and for example, grinding can be performed without removing the workpiece even in a complicated shape having a plurality of surfaces. .

また、本発明の研削加工装置によれば、記憶部には、ワークの目標形状情報が更に格納されており、ワーク検出部は、ワークの現形状を検出し、制御部は、目標形状情報と、ワーク検出部が検出した現形状と、を比較してワークに対する残研削加工量を算出して砥石操作部を制御する。このため、一回の仕上げ加工でワークを精度良く加工することができる。   Further, according to the grinding apparatus of the present invention, the target shape information of the workpiece is further stored in the storage unit, the workpiece detection unit detects the current shape of the workpiece, and the control unit includes the target shape information and Then, the remaining shape of the workpiece is calculated by comparing with the current shape detected by the workpiece detection unit, and the grindstone operation unit is controlled. For this reason, a workpiece can be processed with high accuracy by a single finishing process.

また、本発明に研削加工装置によれば、砥石の移動は並進移動のみならず回転移動も含み、制御部は、砥石の回転移動をも考慮して砥石操作部を制御するため、ワークが複雑な形状であっても更に精度良く研削加工を行うことができる。   Further, according to the grinding apparatus of the present invention, the movement of the grindstone includes not only the translational movement but also the rotational movement, and the control unit controls the grindstone operating unit in consideration of the rotational movement of the grindstone, so that the workpiece is complicated. Even with a simple shape, grinding can be performed with higher accuracy.

また、本発明の研削加工装置によれば、砥石ドレス部はサーボモータを有し、砥石ドレス部のサーボモータが駆動することによりドレスを移動させ、砥石ドレス部のドレスの移動は回転移動を含み、制御部は、ドレスの回転移動をも考慮して砥石操作部及び砥石ドレス部を制御する。このため、砥石が、例えば傾斜面又は曲面を有する複雑な形状であっても、ドレスが砥石の外周面に対し常に垂直に当たるため、精度の良い仕上げドレスを行うことができる。   Further, according to the grinding apparatus of the present invention, the grindstone dressing portion has a servo motor, and the servomotor of the grindstone dressing portion is driven to move the dress, and the movement of the dressing of the grindstone dressing portion includes rotational movement. The control unit controls the grindstone operating unit and the grindstone dressing unit in consideration of the rotational movement of the dress. For this reason, even if the grindstone has a complicated shape having, for example, an inclined surface or a curved surface, the dress always hits perpendicularly to the outer peripheral surface of the grindstone, so that a highly accurate finishing dress can be performed.

また、本発明の研削加工装置によれば、制御部は、ワークに対し実際に研削加工する前に、少なくとも砥石操作部を制御して、ワーク及びドレスに対し所定の余裕隙間をもった試し動作を行うため、ワーク情報や砥石情報などの入力ミスによる装置の衝突を未然に防止することができる。   Further, according to the grinding apparatus of the present invention, the control unit controls at least the grindstone operating unit before actually grinding the workpiece, and has a trial operation with a predetermined margin for the workpiece and the dress. Therefore, it is possible to prevent a collision of the apparatus due to an input error such as workpiece information or grinding wheel information.

本発明に係る研削加工装置の第１実施形態を説明する概略模式図である。It is a schematic diagram explaining 1st Embodiment of the grinding-work apparatus which concerns on this invention. 図１に示す軸受回転テーブル部、軸受検出部、砥石回転部、及び砥石操作部を説明する概略構成図である。It is a schematic block diagram explaining the bearing rotary table part shown in FIG. 1, a bearing detection part, a grindstone rotating part, and a grindstone operation part. 図１に示す砥石回転部の概略構成図である。It is a schematic block diagram of the grindstone rotating part shown in FIG. 図１に示す砥石回転部の回転移動を説明する概略構成図である。It is a schematic block diagram explaining the rotational movement of the grindstone rotating part shown in FIG. 図１に示す研削加工装置の動作を説明する概略模式図である。It is a schematic diagram explaining operation | movement of the grinding processing apparatus shown in FIG. 図１に示す砥石が軸受内輪の外周面に当たって研削加工している状態を示す概略図である。It is the schematic which shows the state which the grindstone shown in FIG. 1 hits the outer peripheral surface of a bearing inner ring | wheel, and is grinding. 研削加工の手順を説明するステップ図である。It is a step figure explaining the procedure of grinding. 本発明に係る研削加工装置の変形例について、軸受内輪の軌道溝の底面部を研削している状態を示す概略図である。It is the schematic which shows the state which grinds the bottom face part of the raceway groove | channel of a bearing inner ring | wheel about the modification of the grinding device which concerns on this invention. 本発明に係る研削加工装置の変形例について、軸受内輪の軌道溝の一対の側面部のうち下方を研削している状態を示す概略図である。It is the schematic which shows the state which grinds the lower part among a pair of side surface parts of the raceway groove | channel of a bearing inner ring | wheel about the modification of the grinding device which concerns on this invention. 本発明に係る研削加工装置の変形例について、軸受内輪の軌道溝の一対の側面部のうち上方を研削している状態を示す概略図である。It is the schematic which shows the state which grinds the upper part among a pair of side surface part of the raceway groove | channel of a bearing inner ring | wheel about the modification of the grinding device which concerns on this invention. 本発明に係る研削加工装置の第２実施形態を説明する概略模式図である。It is a schematic diagram explaining 2nd Embodiment of the grinding-work apparatus which concerns on this invention. 図１１に示す砥石回転部の概略構成図である。It is a schematic block diagram of the grindstone rotating part shown in FIG. 図１１に示す砥石が軸受内輪の大鍔部の側面部に当たって研削加工している状態を示す概略図である。It is the schematic which shows the state which the grindstone shown in FIG. 11 hits the side part of the large collar part of a bearing inner ring | wheel, and is grinding.

以下、本発明に係る研削加工装置の各実施形態について、図面を参照して詳細に説明する。なお、図中、上下（重力）方向をＺ軸、左右方向をＸ軸、Ｚ軸及びＸ軸に垂直な方向をＹ軸とした座標系を設定して説明する。   Hereinafter, embodiments of a grinding apparatus according to the present invention will be described in detail with reference to the drawings. In the drawing, a description will be given by setting a coordinate system in which the vertical (gravity) direction is the Z axis, the horizontal direction is the X axis, and the direction perpendicular to the Z axis and the X axis is the Y axis.

（第１実施形態）
まず、図１〜図７を参照して、本発明に係る研削加工装置の第１実施形態について説明する。 (First embodiment)
First, with reference to FIGS. 1-7, 1st Embodiment of the grinding-work apparatus which concerns on this invention is described.

本実施形態の研削加工装置１０Ａは、図１に示すように、ワークとして大型の軸受内輪（ワーク、軸受軌道輪）１の外周面に対し砥石４１をその軸線ＬＷに向かって当てて軸受内輪１を研削するものである。なお、本実施形態では、軸受内輪の場合について説明しているが、これに限らず、軸受外輪にも同様な研削加工を行うことができる。 Grinding device 10A of this embodiment, as shown in FIG. 1, a large bearing inner ring as a work (work, bearing ring) bearing inner ring relative to the outer peripheral surface of one against towards the grindstone 41 to the axis L W 1 is ground. In the present embodiment, the case of the bearing inner ring is described. However, the present invention is not limited to this, and the same grinding process can be performed on the bearing outer ring.

この研削加工装置１０Ａは、図１及び図２に示すように、軸受内輪１を保持すると共に、この軸受内輪１をその軸線ＬＷ回りに回転駆動する軸受回転テーブル部（ワーク回転テーブル部）２０と、軸受回転テーブル部２０に保持された軸受内輪１の位置及び形状を検出する軸受検出部（ワーク検出部）３０と、略円筒状の砥石４１を保持すると共に、その軸線ＬＧ回りに砥石４１を回転駆動する砥石回転部４０と、先端部に砥石回転部４０が固設され、砥石４１を所定の位置及び姿勢に移動させる砥石操作部５０と、複数のドレス６１を有して、砥石４１に対して仕上げドレスを行う砥石ドレス部６０と、記憶部７１を有すると共に、軸受回転テーブル部２０、軸受検出部３０、砥石回転部４０、砥石操作部５０、砥石ドレス部６０の動作をそれぞれ制御する制御部７０と、を備える。なお、軸受回転部２０及び砥石ドレス部６０は、例えば、作業場において、所定の距離を置いて隣接した状態でそれぞれ配置される。また、本実施形態の研削加工装置１０Ａでは、複数の砥石を着脱自在に取り付けられるように構成されている。 The grinding apparatus 10A, as shown in FIGS. 1 and 2, holds the bearing inner ring 1, the bearing rotatable table for rotating the bearing inner ring 1 in the axial L W around (work rotation table section) 20 If, grinding a bearing detection section (work detecting unit) 30 for detecting the position and shape of the bearing inner ring 1 held in the bearing rotatable table 20 holds a substantially cylindrical grinding wheel 41, its axis L G around The grindstone rotating unit 40 that rotationally drives the grindstone 41, the grindstone rotating unit 40 fixed at the tip, a grindstone operating unit 50 that moves the grindstone 41 to a predetermined position and posture, and a plurality of dresses 61, The grindstone dressing unit 60 for finishing dressing 41 and the storage unit 71, and the operations of the bearing rotary table unit 20, the bearing detecting unit 30, the grindstone rotating unit 40, the grindstone operating unit 50, and the grindstone dressing unit 60 are provided. And a control unit 70 for controlling each of the. In addition, the bearing rotation part 20 and the grindstone dressing part 60 are each arrange | positioned in the state which left the predetermined distance and adjoined, for example in the workplace. Moreover, in the grinding apparatus 10A of this embodiment, it is comprised so that a some grindstone can be attached freely.

軸受回転テーブル部２０は、主軸テーブル部２１と、主軸テーブル２１の上面に固設されるチャック部２２と、を有し、軸受内輪１はノーズピース２３を介してその軸線ＬＷがＺ軸と平行となるようにチャック２２に固定される。これにより、軸受内輪１は、軸受回転テーブル部２０により保持された状態で回転される。なお、本実施形態では、チャック２２は、マグネットチャックとされるが、メカチャックでもよい。 The bearing rotary table unit 20 includes a main shaft table unit 21 and a chuck unit 22 fixed to the upper surface of the main shaft table 21, and the bearing inner ring 1 has a nose piece 23 whose axis LW is Z axis. It is fixed to the chuck 22 so as to be parallel. Thereby, the bearing inner ring 1 is rotated while being held by the bearing rotary table portion 20. In the present embodiment, the chuck 22 is a magnet chuck, but may be a mechanical chuck.

軸受検出部３０は、砥石操作部５０に直接取り付けられており、砥石操作部５０の並進回転駆動部５３（後述）の片側部から張り出すベース部３２と、このベース部３２に固設されＺ軸方向でスライド移動可能とされる並進駆動部３３と、この並進駆動部３３の先端部に取り付けられる接触子３１と、を有する。接触子３１は、いわゆるタッチプローブタイプのものであり、並進駆動部３３により軸受内輪１に近づき、その先端が軸受内輪１に接触することでその軸受内輪１の位置及び形状情報を取得する。さらに、本実施形態では、軸受検出部３０は、研削加工中において軸受内輪１の現形状を適宜検出して、その現形状の情報も制御部７０に出力するように構成されている。   The bearing detection unit 30 is directly attached to the grindstone operation unit 50, a base portion 32 that projects from one side of a translational rotation drive unit 53 (described later) of the grindstone operation unit 50, and is fixed to the base portion 32. It has the translation drive part 33 which can be slidably moved in an axial direction, and the contact 31 attached to the front-end | tip part of this translation drive part 33. The contact 31 is of a so-called touch probe type, and the position and shape information of the bearing inner ring 1 are acquired by approaching the bearing inner ring 1 by the translation drive unit 33 and the tip of the contact 31 contacting the bearing inner ring 1. Furthermore, in the present embodiment, the bearing detection unit 30 is configured to appropriately detect the current shape of the bearing inner ring 1 during grinding and to output information on the current shape to the control unit 70.

なお、主軸回転中心（即ち、軸受回転テーブル部２０の軸線ＬＷ）を基準とする原点（ワーク基準原点）ＯＷに関する座標系情報は、事前に制御部７０の記憶部７１に適宜設定されている。また、本実施形態の研削加工装置１０Ａでは、全体座標系（所定の基準座標系、例えば主軸中心を原点とする座標系）が設定されており、後述するように砥石４１の基準原点（砥石基準原点）ＯＧなどの位置情報がこの全体座標系を基準として制御部７０の記憶部７１に記憶保持されている。 Incidentally, the main shaft rotational center (i.e., the axis L W of the bearing rotating table unit 20) coordinate information on the origin (the work reference origin) O W relative to the can pre-set appropriately in the memory unit 71 of the control unit 70 Yes. Further, in the grinding apparatus 10A of the present embodiment, a global coordinate system (a predetermined reference coordinate system, for example, a coordinate system having the center of the spindle as an origin) is set, and a reference origin of the grindstone 41 (a grindstone reference) is described later. location information such as the origin) O G is stored and held in the storage unit 71 of the control unit 70 as a reference the global coordinate system.

砥石回転部４０は、砥石４１を高速且つ高トルクで回転させるスピンドル部４２を有し、このスピンドル部４２の回転駆動がベルトなどの所定の駆動伝達装置（不図示）を介して砥石４１に伝達される。これにより、砥石４１はその軸線ＬＧ回りに高速且つ高トルクに回転駆動される。なお、本実施形態では、ビルトインタイプ（直結型）を用いているが、ベルトなどを含む駆動伝達装置を介して回転駆動が伝達してもよい。 The grindstone rotating unit 40 includes a spindle unit 42 that rotates the grindstone 41 at high speed and high torque, and the rotational drive of the spindle unit 42 is transmitted to the grindstone 41 via a predetermined drive transmission device (not shown) such as a belt. Is done. Thus, the grinding wheel 41 is rotated at a high speed and high torque in the axis L G around. In the present embodiment, the built-in type (direct connection type) is used, but the rotational drive may be transmitted via a drive transmission device including a belt or the like.

砥石操作部５０は、軸受回転テーブル部２０及び砥石ドレス部６０の上方で広範囲に亘って移動できるようにＸ方向に延びるベース部５１と、このベース部５１上をＺ軸方向にスライド移動可能とされる並進駆動部５２と、この並進駆動部５２に固設され、Ｘ軸、Ｙ軸及びＺ軸の３軸方向において並進移動可能であり、且つＹ軸に平行な軸線ＬＭに対し回転移動可能とされる並進回転駆動部５３と、を有する（図２参照）。即ち、砥石操作部５０は、並進３自由度、回転１自由度の計４自由度の空間自由度を有する。また、砥石操作部５０の並進駆動部５２により、砥石４１は、待機位置（図１中、右側）、研削加工位置（図１中、中央）、ドレス加工位置（図１中、左側）にそれぞれ適宜移動される。さらに、本実施形態では、砥石操作部５０は、複数のサーボモータ（不図示）を有して、これらサーボモータが駆動することで、砥石回転部４０に取り付けられた砥石４１の並進及び回転の移動が実現される。そのサーボモータの駆動情報は制御部７０により取得される。なお、砥石４１の交換は、砥石操作部５０の駆動により砥石４１が待機位置に移動した状態で実施される。なお、本実施形態は、並進回転駆動部５３を３軸方向の並進移動可能としたが、目標動作に応じて２軸の構成にしてもよい。この場合、構造を簡素化できて、装置コストを低減することができる。 The grindstone operating part 50 is slidable in the Z-axis direction on the base part 51 extending in the X direction so that it can move over a wide range above the bearing rotary table part 20 and the grindstone dressing part 60. a translational driving unit 52 that is, is fixed to the translation drive unit 52, X-axis, a translatable in three axial directions of the Y-axis and Z-axis, and rotational movement with respect to an axis parallel L M in the Y-axis A translational rotation drive unit 53 that can be used (see FIG. 2). That is, the grindstone operating unit 50 has a total of 4 degrees of freedom in total of 3 degrees of freedom for translation and 1 degree of freedom for rotation. Further, the translation drive unit 52 of the grindstone operation unit 50 causes the grindstone 41 to move to a standby position (right side in FIG. 1), a grinding position (center in FIG. 1), and a dressing position (left side in FIG. 1). Moved as appropriate. Furthermore, in this embodiment, the grindstone operating unit 50 has a plurality of servo motors (not shown), and these servo motors drive to translate and rotate the grindstone 41 attached to the grindstone rotating unit 40. Movement is realized. The drive information of the servo motor is acquired by the control unit 70. The replacement of the grindstone 41 is performed in a state where the grindstone 41 is moved to the standby position by driving the grindstone operation unit 50. In the present embodiment, the translational rotation driving unit 53 is capable of translational movement in the three-axis direction. In this case, the structure can be simplified and the device cost can be reduced.

砥石ドレス部６０は、所定の地面に固設されるベース部６２と、ベース部６２に立設される柱部６３と、柱部６３の先端部に配置される複数のドレス６１と、を有する。また、ドレス６１の表面部にはダイアモンドなどの砥粒が植え付けられている。なお、本実施形態では、砥石ドレス部６０は、サーボモータなどの駆動部を有しておらず、複数のドレス６１は静置された状態で用いられる。   The grindstone dress portion 60 has a base portion 62 fixed to a predetermined ground, a column portion 63 erected on the base portion 62, and a plurality of dresses 61 disposed at the tip end portion of the column portion 63. . Further, abrasive grains such as diamond are planted on the surface portion of the dress 61. In the present embodiment, the grindstone dressing unit 60 does not have a driving unit such as a servo motor, and the plurality of dresses 61 are used in a stationary state.

制御部７０の記憶部７１は、一般的なメモリ装置などで構成されており、この記憶部７１には、主軸回転中心を基準とする原点ＯＷを基準とした位置形状情報と、砥石４１の基準原点（砥石基準原点）ＯＧを基準とした位置形状情報と、砥石回転部４０での砥石４１の取付位置情報と、砥石操作部５０での砥石回転部４０の取付位置情報と、砥石操作部５０の、全体座標系を基準とした座標系情報と、砥石ドレス部６０の、全体座標系を基準とした座標系情報と、の座標系関連情報群が格納される。具体的には、軸受内輪１の位置形状情報としては軸受内輪１の外径、内径、幅、溝径、及び溝幅などの情報が挙げられる。また、砥石４１の位置形状情報として、砥石径、砥石幅、クイル長さなどが挙げられる。さらに、記憶部７１には、軸受内輪１の最終的な目標形状を示す目標形状情報が更に格納されている。 Storage unit 71 of the control unit 70 is constituted by a general memory device, this memory unit 71, and the position shape information relative to the origin O W relative to the spindle rotation center, of the grinding wheel 41 a reference origin (grindstone reference origin) position shape information the O G as a reference, and the mounting position information of the grinding wheel 41 in the grinding wheel rotation unit 40, and the mounting position information of the grindstone 40 in the grinding wheel operating section 50, the grinding wheel operations The coordinate system related information group of the coordinate system information on the basis of the global coordinate system of the unit 50 and the coordinate system information on the basis of the global coordinate system of the grindstone dressing unit 60 is stored. Specifically, the position shape information of the bearing inner ring 1 includes information such as the outer diameter, inner diameter, width, groove diameter, and groove width of the bearing inner ring 1. Further, the position shape information of the grindstone 41 includes a grindstone diameter, a grindstone width, a quill length, and the like. Further, the storage unit 71 further stores target shape information indicating the final target shape of the bearing inner ring 1.

ここで、砥石４１の基準原点ＯＧについて図３及び図４を参照して更に説明する。 Here will be further described with reference to FIGS. 3 and 4 for reference origin O G of the grinder 41.

砥石４１の基準原点ＯＧとして、図３に示すように、略円筒状の砥石４１の下端縁部のうちＸ軸方向で最も外方に位置する点が用いられる。そして、この点を原点として砥石４１の座標系が設定されることになる。本実施形態では、この砥石４１の基準原点ＯＧを確定させるため、砥石ドレス部６０のドレス６１の先端位置が所定の治具によって正確に位置出しされている。このため、砥石４１をこのドレス６１を用いてドレスすることにより、砥石４１の基準原点ＯＧが制御部７０により数値で把握されることになる。これにより、全体座標系での砥石ドレス部６０及びそのドレス６１の位置情報、砥石４１の軸線ＬＧの位置情報などの座標系情報も合わせて制御部７０により数値で把握されることになる。 As reference origin O G of the wheel 41, as shown in FIG. 3, a point located most outward in the X-axis direction of the lower edge portion of the substantially cylindrical grinding wheel 41 is used. Then, the coordinate system of the grindstone 41 is set with this point as the origin. In the present embodiment, it is correctly positioning this in order to determine the reference origin O G of the grinding wheel 41, the leading end position of the address 61 of the grinding wheel dress portion 60 of a predetermined jig. Therefore, by dress with the dress 61 grindstone 41, so that the reference origin O G of the grinder 41 is grasped by a numerical value by the control unit 70. Thus, to be grasped by a numerical value by the grindstone dress portion 60 and the position information, the control unit 70 to match the coordinate system information such as the location information of the axis L G of the grinding wheel 41 of the dress 61 in the global coordinate system.

そして、図４に示すように、砥石回転部４０が軸線ＬＭ周りに回転移動して砥石４１の位置姿勢が変更しても、制御部７０は砥石４１の座標系に対して、例えば、同次変換行列などを用いて座標統合を行い、全体座標系における移動先の砥石４１の位置姿勢を算出する。このため、砥石４１の適切な動作が実現される。 Then, as shown in FIG. 4, the grinding wheel rotating part 40 is changed by the position and orientation of the grinding wheel 41 is rotated and moved around the axis L M, with respect to the coordinate system of the control unit 70 grindstone 41, for example, the Coordinate integration is performed using a next transformation matrix or the like, and the position and orientation of the moving grindstone 41 in the overall coordinate system are calculated. For this reason, the suitable operation | movement of the grindstone 41 is implement | achieved.

制御部７０は、図１に示すように、演算器（例えばＣＰＵ）、バス回路、入出力装置（例えば、キーボード、マウス）などを備え、いわゆる一般的なコンピュータとして構成されており、前述した記憶部７１の座標系関連情報群、及び砥石操作部５０のサーボモータの駆動情報に基づき、軸受内輪１、砥石４１、及びドレス６１それぞれの座標系を統合して、砥石操作部５０を制御することにより砥石４１の位置決めを行う。また、制御部７０は、記憶部７１に格納された軸受内輪１の目標形状情報と、軸受検出部３０が検出した軸受内輪１の現形状と、を比較し、軸受内輪１に対する残研削加工量を算出して砥石操作部５０を制御する。また、制御部７０は、軸受内輪１に対し実際に研削加工する前に、砥石操作部５０を制御して、軸受内輪１及びドレス６１に対し所定の余裕隙間をもった試し動作（トレースサイクル）を行う。この試し動作では、通常の動作速度よりも遅い速度で行われる。なお、制御部７０には、この試し動作が完了しないと研削加工及び仕上げドレスを行うことができないようにインターロックシステムが組み込まれている。   As shown in FIG. 1, the control unit 70 includes a computing unit (for example, CPU), a bus circuit, an input / output device (for example, a keyboard, a mouse) and the like, and is configured as a so-called general computer. Based on the coordinate system related information group of the unit 71 and the drive information of the servo motor of the grindstone operation unit 50, the coordinate systems of the bearing inner ring 1, the grindstone 41, and the dress 61 are integrated to control the grindstone operation unit 50. Thus, the grindstone 41 is positioned. Further, the control unit 70 compares the target shape information of the bearing inner ring 1 stored in the storage unit 71 with the current shape of the bearing inner ring 1 detected by the bearing detection unit 30, and the remaining grinding amount for the bearing inner ring 1. And the grindstone operating unit 50 is controlled. Further, the control unit 70 controls the grindstone operating unit 50 before actually grinding the bearing inner ring 1 to perform a trial operation (trace cycle) with a predetermined margin between the bearing inner ring 1 and the dress 61. I do. This trial operation is performed at a speed slower than the normal operation speed. The control unit 70 incorporates an interlock system so that grinding and finishing dressing cannot be performed unless the trial operation is completed.

次に、図５及び図６に基づいて、研削加工装置１０Ａを用いた軸受内輪１の外周面の研削加工について説明する。   Next, based on FIG.5 and FIG.6, the grinding process of the outer peripheral surface of the bearing inner ring | wheel 1 using 10 A of grinding processing apparatuses is demonstrated.

本実施形態では、まず、軸受回転テーブル部２０を用いて、軸受内輪１を保持すると共に、この軸受内輪１をその軸線ＬＷ回りに回転駆動する。その後、制御部７０は、砥石操作部５０を制御することにより、砥石回転部４０の砥石４１が軸受内輪１の外周面に当たる位置に位置決めして、軸線ＬＷに向かって砥石４１を徐々に押圧していく。このとき、制御部７０は、予め記憶部７１の座標系関連情報群を読み込むと共に、砥石操作部５０のサーボモータの駆動情報を逐次取得して、軸受内輪１の座標系と砥石４１の座標系とを全体座標系を基準として統合して、砥石４１の適切な動作を実現している。 In the present embodiment, first, using a bearing rotating table unit 20, it holds the bearing inner ring 1, for rotating the bearing inner ring 1 in the axial L W around. Thereafter, the control unit 70, by controlling the grinding wheel operating section 50, the grindstone 41 of the grinding wheel rotating part 40 is positioned at the position corresponding to the outer peripheral surface of the bearing inner ring 1, gradually pressing the grinding wheel 41 toward the axis L W I will do it. At this time, the control unit 70 reads the coordinate system related information group of the storage unit 71 in advance and sequentially acquires the drive information of the servo motor of the grindstone operation unit 50 to obtain the coordinate system of the bearing inner ring 1 and the coordinate system of the grindstone 41. Are integrated on the basis of the entire coordinate system, and an appropriate operation of the grindstone 41 is realized.

そして、図６に示すように、砥石４１の外周面を軸受内輪１の外周面に当てた状態で、砥石４１を軸受内輪１の回転方向とは逆方向に回転駆動することにより、軸受内輪１の研削加工を開始する。軸受内輪１と砥石４１それぞれの表面位置が制御部７０により把握されているため、研削加工は自動で行われ、いわゆる「当て込み」が不要となっている。   Then, as shown in FIG. 6, the bearing inner ring 1 is driven by rotating the grindstone 41 in a direction opposite to the rotation direction of the bearing inner ring 1 with the outer peripheral surface of the grindstone 41 being in contact with the outer peripheral surface of the bearing inner ring 1. Start grinding process. Since the surface positions of the bearing inner ring 1 and the grindstone 41 are grasped by the control unit 70, the grinding process is performed automatically, and so-called “striking” is unnecessary.

ここで、前述した研削開始から研削終了までのステップについて、図７を参照しながら更に説明する。   Here, the steps from the start of grinding to the end of grinding will be further described with reference to FIG.

研削が開始され（即ち、Ｓ１）、砥石４１を砥石ドレス部６０のドレス６１に自動的に当てて、砥石４１のドレスを行う（即ち、Ｓ２）。このとき、砥石４１の基準原点ＯＧを確定させる。また、砥石４１のドレスを行った回数を制御部７０により記録させておき、この回数に応じたドレス６１の摩耗量を勘案して、砥石４１の基準原点ＯＧを確定する。なお、この摩耗量の算出は、例えば、経験則に基づいたマッピングデータを用いて行うことができる。 Grinding is started (ie, S1), and the grindstone 41 is automatically applied to the dress 61 of the grindstone dressing portion 60 to dress the grindstone 41 (ie, S2). At this time, to determine the reference origin O G of the grinder 41. Alternatively, it is acceptable to be recorded by the control unit 70 the number of times that the dress grindstone 41, in consideration of the amount of wear of the dress 61 corresponding to this number, determines the reference origin O G of the grinder 41. The wear amount can be calculated using mapping data based on an empirical rule, for example.

次に、軸受内輪１を装置に設置して、砥石４１により軸受内輪１の外周面を粗研削する（即ち、Ｓ３）。ここで、砥石４１の基準原点ＯＧが把握されているため、外部衝撃などの外乱などを無視すれば理想的には１回の研削で目標寸法を得ることができるが、実際には熱膨張などを考慮する必要があり、複数回に分けて研削加工を行う。 Next, the bearing inner ring 1 is installed in the apparatus, and the outer peripheral surface of the bearing inner ring 1 is roughly ground by the grindstone 41 (that is, S3). Here, since the reference origin O G of the grinder 41 is grasped, it is possible to obtain a desired size in one grinding ideally Neglecting such disturbances such as external impact, in fact thermal expansion It is necessary to consider such as, grinding is performed in multiple times.

更に、軸受検出部３０の接触子３１により、軸受内輪１の各部を測定して現形状を検出する（即ち、Ｓ４）。制御部７０は、記憶部７１から軸受内輪１の目標形状情報を読み出して、この目標形状情報と現形状と差を算出する（即ち、Ｓ５）。制御部７０が、差があると判断すれば（即ち、Ｓ５のＹＥＳ）、補正値として仕上研削の切り込み量を算出し、この切り込み量に基づいて砥石操作部５０の動作を適宜修正する（即ち、Ｓ６）。そして、得られた切り込み量に基づき仕上研削を続け（即ち、Ｓ７）、Ｓ４のステップに戻り、差がないと判断されるまで、Ｓ４〜Ｓ７のステップを繰り返し実施する。このように、軸受内輪１の研削箇所の寸法を軸受検出部３０の接触子３１により測定して、目標寸法内にない場合には新たな切り込み量を算出し再度仕上研削を行うという、一連の研削ステップを行う。制御部７０が、差がないと判断すれば（即ち、Ｓ５のＮＯ）、研削加工を終了する（即ち、Ｓ８）。この一連の研削ステップを全ての研削箇所で粗研削を行い、その後各部の寸法を測定して全ての研削箇所で仕上研削を行う。なお、本実施形態では、各研削箇所でこの一連の研削ステップは１回ずつとされるが、これに限らず目標寸法内になるまでループするようにしてもよい。   Further, the contact 31 of the bearing detection unit 30 measures each part of the bearing inner ring 1 to detect the current shape (ie, S4). The control unit 70 reads the target shape information of the bearing inner ring 1 from the storage unit 71, and calculates the difference between the target shape information and the current shape (that is, S5). If the control unit 70 determines that there is a difference (that is, YES in S5), the amount of finish grinding is calculated as a correction value, and the operation of the grindstone operating unit 50 is appropriately corrected based on this amount of cutting (that is, , S6). Then, finish grinding is continued based on the obtained cutting depth (ie, S7), and the process returns to step S4, and steps S4 to S7 are repeated until it is determined that there is no difference. In this way, the dimensions of the grinding location of the bearing inner ring 1 are measured by the contact 31 of the bearing detection unit 30, and when the dimensions are not within the target dimensions, a new cutting amount is calculated and finish grinding is performed again. Perform a grinding step. If the controller 70 determines that there is no difference (i.e., NO in S5), the grinding process is terminated (i.e., S8). In this series of grinding steps, rough grinding is performed at all grinding points, and then the dimensions of each part are measured and finish grinding is performed at all grinding points. In the present embodiment, this series of grinding steps is performed once at each grinding point, but the present invention is not limited to this, and a loop may be made until it is within the target dimension.

以上説明したように、本実施形態の研削加工装置１０Ａによれば、軸受検出部（ワーク検出部）３０は、接触子３１を有し、接触子３１を軸受内輪１（ワーク、軸受軌道輪）に接触させることで軸受内輪１の位置及び形状を検出し、砥石操作部５０はサーボモータを有し、砥石操作部５０のサーボモータが駆動することで砥石４１を移動させ、制御部７０の記憶部７１には、主軸回転中心を基準とする原点ＯＷを基準とした位置形状情報と、砥石４１の基準原点（砥石基準原点）ＯＧを基準とした位置形状情報と、砥石回転部４０での砥石４１の取付位置情報と、砥石操作部５０での砥石回転部４０の取付位置情報と、砥石操作部５０の、全体座標系（所定の基準座標系）を基準とした座標系情報と、砥石ドレス部６０の、全体座標系を基準とした座標系情報と、の座標系関連情報群が格納され、制御部７０は、記憶部７１の座標系関連情報群、及び砥石操作部５０のサーボモータの駆動情報に基づき、軸受内輪１、砥石４１、及びドレス６１それぞれの座標系を統合して砥石操作部５０を制御することにより、砥石４１の位置決めを行う。このため、ワークである軸受内輪１を装置にセットすれば一連の研削加工を自動で行い、作業者が何らかの作業をすることがないため、ティーチング作業を不要にして作業の簡便化（スキルレス化）を図ることができる。即ち、軸受内輪１、砥石４１及びドレス６１の座標系を統合するため、装置から軸受内輪１を取り外すことなく、研削加工時の砥石４１の移動量を自動的に決定することができ、また、仕上げドレスも自動的に行うことができる。さらに、軸受検出部３０は接触子３１を用いて軸受内輪１の位置及び形状を検出するため、複数の面を１つの接触子３１で検出することができる。これにより、大型の軸受内輪１であっても軸受内輪１を一度設置すれば装置を停止し取り出して別途測定する必要がなく研削加工を行うことができ、作業時間及び作業負担の低減化及び高精度化を図ることができる。 As described above, according to the grinding apparatus 10A of the present embodiment, the bearing detection unit (work detection unit) 30 has the contact 31, and the contact 31 is the bearing inner ring 1 (work, bearing bearing ring). , The position and shape of the bearing inner ring 1 are detected, the grindstone operating unit 50 has a servo motor, and the grindstone 41 is moved by driving the servo motor of the grindstone operating unit 50, and stored in the control unit 70. the parts 71, and the position shape information relative to the origin O W relative to the spindle rotation center, the position shape information relative to the reference origin (grindstone reference origin) O G of the grindstone 41, at the grindstone 40 Mounting position information of the grindstone 41, mounting position information of the grindstone rotating unit 40 in the grindstone operating unit 50, coordinate system information of the grindstone operating unit 50 based on the entire coordinate system (predetermined reference coordinate system), Based on the overall coordinate system of the grinding wheel dressing unit 60 The coordinate system related information group and the coordinate system related information group are stored, and the control unit 70 is based on the coordinate system related information group in the storage unit 71 and the servo motor drive information in the grindstone operation unit 50, and the bearing inner ring 1, The grindstone 41 is positioned by integrating the coordinate systems of the grindstone 41 and the dress 61 and controlling the grindstone operating unit 50. For this reason, if the bearing inner ring 1 as a workpiece is set in the apparatus, a series of grinding processes are automatically performed and the operator does not perform any work. ). That is, since the coordinate system of the bearing inner ring 1, the grindstone 41 and the dress 61 is integrated, the movement amount of the grindstone 41 during grinding can be automatically determined without removing the bearing inner ring 1 from the apparatus. Finishing dress can also be done automatically. Further, since the bearing detection unit 30 detects the position and shape of the bearing inner ring 1 using the contact 31, a plurality of surfaces can be detected by the single contact 31. Thereby, even if it is a large bearing inner ring | wheel 1, once the bearing inner ring | wheel 1 is installed, it is not necessary to stop and take out an apparatus and to measure separately, and can grind, and work time and a work burden can be reduced and high. Accuracy can be improved.

また、本実施形態の研削加工装置１０Ａによれば、記憶部７１には、軸受内輪（ワーク、軸受軌道輪）１の目標形状情報が更に格納されており、軸受検出部（ワーク検出部）３０は、軸受内輪１の現形状を検出し、制御部７０は、目標形状情報と、軸受検出部３０が検出した現形状と、を比較して軸受内輪１に対する残研削加工量を算出して砥石操作部５０を制御する。このため、一回の仕上げ加工で軸受内輪１を精度良く加工することができる。   Further, according to the grinding apparatus 10A of the present embodiment, the storage unit 71 further stores target shape information of the bearing inner ring (work, bearing bearing ring) 1, and the bearing detection unit (work detection unit) 30. Detects the current shape of the bearing inner ring 1, and the control unit 70 compares the target shape information with the current shape detected by the bearing detection unit 30 to calculate the remaining grinding amount for the bearing inner ring 1 to thereby calculate the grinding wheel. The operation unit 50 is controlled. For this reason, the bearing inner ring 1 can be processed with high accuracy by a single finishing process.

また、本実施形態の研削加工装置１０Ａによれば、砥石４１の移動は並進運動のみならず回転移動も含み、制御部７０は、砥石４１の回転移動をも考慮して砥石操作部５０を制御するため、軸受内輪１が複雑な形状であっても更に精度良く研削加工を行うことができる。   Further, according to the grinding apparatus 10A of the present embodiment, the movement of the grindstone 41 includes not only translational movement but also rotational movement, and the control unit 70 controls the grindstone operating unit 50 in consideration of the rotational movement of the grindstone 41. Therefore, even if the bearing inner ring 1 has a complicated shape, grinding can be performed with higher accuracy.

また、本実施形態の研削加工装置１０Ａによれば、制御部７０は、軸受内輪（ワーク）１に対し実際に研削加工する前に、少なくとも砥石操作部５０を制御して、軸受内輪１及びドレス６１に対し所定の余裕隙間をもった試し動作を行うため、軸受内輪情報や砥石情報などの入力ミスによる装置の衝突を未然に防止することができる。   In addition, according to the grinding apparatus 10A of the present embodiment, the control unit 70 controls at least the grindstone operating unit 50 before actually grinding the bearing inner ring (workpiece) 1, thereby the bearing inner ring 1 and the dress. Since a trial operation with a predetermined margin is performed on 61, it is possible to prevent a collision of the apparatus due to an input error such as bearing inner ring information or grinding wheel information.

次に、図８〜図１０を参照して本実施形態に係る変形例について説明する。   Next, a modification according to the present embodiment will be described with reference to FIGS.

本変形例では軸受内輪８１に軌道溝８２が外周面に亘って形成されており、この軌道溝８２を研削するものである。本変形例の砥石１０１は、図８に示すように、第１円筒部１０１Ａと、この第１円筒部１０１Ａの下端面に固設され、外周面が下方に行くに従い縮径する第２円筒部１０１Ｂと、を有する。   In this modification, a raceway groove 82 is formed in the bearing inner ring 81 over the outer peripheral surface, and this raceway groove 82 is ground. As shown in FIG. 8, the grindstone 101 of this modification is fixed to the first cylindrical portion 101A and the lower end surface of the first cylindrical portion 101A, and the second cylindrical portion whose diameter decreases as the outer peripheral surface goes downward. 101B.

研削加工を開始するためには、制御部７０が記憶部７１から軌道溝８２を有する軸受内輪８１の位置形状情報、及び砥石１０１の位置形状情報が制御部７０により事前に自動的に読み込まれる。そして、軸受内輪８１が軸受回転テーブル部２０に保持され回転された状態で、制御部７０は、記憶部７１の座標系関連情報群及び砥石操作部５０のサーボモータの駆動情報に基づき、砥石１０１を軸受内輪８１の軌道溝８２の底面部８２Ａに当てて研削する。   In order to start grinding, the control unit 70 automatically reads in advance the position shape information of the bearing inner ring 81 having the raceway groove 82 and the position shape information of the grindstone 101 from the storage unit 71. Then, in a state where the bearing inner ring 81 is held and rotated by the bearing rotary table unit 20, the control unit 70 is based on the coordinate system related information group of the storage unit 71 and the drive information of the servo motor of the grindstone operation unit 50. Is applied to the bottom surface portion 82A of the raceway groove 82 of the bearing inner ring 81 and ground.

軌道溝８２の底面部８２Ａの研削加工が終了すれば、図９に示すように、有底椀状に形成されて、円状底部１１１Ａと、この円状底部１１１Ａの周縁から軸方向に延出した周壁部１１１Ｂと、を有する砥石１１１に交換する。ここでは、砥石１１１の円状底部１１１Ａが上方に位置するように砥石１１１を砥石回転部４０に取り付けられ、その交換は自動的に行われる。このとき、制御部７０は、この砥石１１１の情報を記憶部７１から読み込む。そして、軸受内輪８１が回転された状態で、制御部７０は、記憶部７１の座標系関連情報群及び砥石操作部５０のサーボモータの駆動情報に基づき、砥石１１１の周壁部１１１Ｂの端面を軌道溝８２の一対の側面部８２Ｂ，８２Ｂのうち下方に当てて研削する。なお、砥石の交換の度に砥石のドレスを行って、種々の砥石の基準原点ＯＧをそれぞれ把握するステップが各面の研削加工前に行われる。 When the grinding of the bottom surface portion 82A of the raceway groove 82 is completed, as shown in FIG. 9, it is formed into a bottomed bowl shape, and extends in the axial direction from the circular bottom portion 111A and the peripheral edge of the circular bottom portion 111A. It replaces with the grindstone 111 which has the surrounding wall part 111B. Here, the grindstone 111 is attached to the grindstone rotating portion 40 so that the circular bottom portion 111A of the grindstone 111 is positioned upward, and the exchange is automatically performed. At this time, the control unit 70 reads information on the grindstone 111 from the storage unit 71. Then, with the bearing inner ring 81 rotated, the control unit 70 tracks the end surface of the peripheral wall 111B of the grindstone 111 based on the coordinate system related information group in the storage unit 71 and the drive information of the servo motor in the grindstone operation unit 50. The pair of side surface portions 82B and 82B of the groove 82 is ground downward and ground. Incidentally, by performing a grinding wheel dress every exchange of the grinding wheel, the step of grasping each reference origin O G of the various grinding wheel is performed before grinding of each surface.

さらに、下方の側面部８２Ｂの研削加工が終了すれば、図１０に示すように、砥石１１１に対し上下逆形状の砥石１１６に交換する。ここで、砥石１１６は砥石１１１と同様な構造とされ円状底部１１６Ａと周壁部１１６Ｂとを有するが、この交換は自動で行われるものであるため、予め互いに上下逆の配置とされる砥石１１１，１１６が所定の装置に別個にそれぞれ装填配置されている。   Further, when the grinding of the lower side surface portion 82B is completed, as shown in FIG. Here, the grindstone 116 has a structure similar to that of the grindstone 111 and has a circular bottom portion 116A and a peripheral wall portion 116B. However, since this exchange is performed automatically, the grindstone 111 that is arranged upside down in advance is arranged in advance. , 116 are separately loaded in a predetermined apparatus.

そして、制御部７０は、この砥石１１６の情報を記憶部７１から読み込む。軸受内輪８１が回転された状態で、制御部７０は、記憶部７１の座標系関連情報群及び砥石操作部５０のサーボモータの駆動情報に基づき、砥石１１６の周壁部１１６Ｂの端面を軌道溝８２の一対の側面部８２Ｂ，８２Ｂのうち上方に当てて研削する。   Then, the control unit 70 reads information on the grindstone 116 from the storage unit 71. In a state where the bearing inner ring 81 is rotated, the control unit 70 uses the end face of the peripheral wall 116B of the grindstone 116 on the raceway groove 82 based on the coordinate system related information group of the storage unit 71 and the drive information of the servo motor of the grindstone operation unit 50. Of the pair of side surface portions 82B, 82B, and grind the upper portion.

このように本変形例によれば、軌道溝８２を有する軸受内輪８１のような複数の面を有する形状であっても、それぞれの加工面に応じて砥石１０１，１１１，１１６などの専用砥石を適宜それぞれ自動的に交換することで、装置から軸受内輪８１を取り外すことなく研削加工を自動的に且つ精度良く行うことができる。   As described above, according to the present modification, even if the shape has a plurality of surfaces such as the bearing inner ring 81 having the raceway groove 82, the dedicated grindstones such as the grindstones 101, 111, and 116 are used in accordance with the respective machining surfaces. By appropriately automatically replacing each of them, grinding can be performed automatically and accurately without removing the bearing inner ring 81 from the apparatus.

（第２実施形態）
次に、図１１〜図１３を参照しながら、本発明に係る研削加工装置の第２実施形態について説明する。なお、第１実施形態と同一又は同等部分については、図面に同一或いは同等符号を付してその説明を省略或いは簡略化する。 (Second Embodiment)
Next, a second embodiment of the grinding apparatus according to the present invention will be described with reference to FIGS. Note that portions that are the same as or equivalent to those of the first embodiment are denoted by the same or equivalent reference numerals in the drawings, and description thereof is omitted or simplified.

本実施形態の砥石１３１は、図１２に示すように、略円筒状に形成され、その外周面において下部に位置する第１テーパ面部１３１Ａと、第１テーパ面部１３１Ａと連続すると共にその上方に位置する第２テーパ面部１３１Ｂと、を有する。第１テーパ面部１３１Ａ及び第２テーパ面部１３１Ｂは、軸方向外方に行くに従い縮径するようにそれぞれ傾斜しており、その傾斜方向は互いに逆方向とされている。また、第１テーパ面部１３１Ａの軸方向寸法は、第２テーパ面部１３１Ｂに比べ厚く設定されている。   As shown in FIG. 12, the grindstone 131 of the present embodiment is formed in a substantially cylindrical shape, and is continuous with the first tapered surface portion 131 </ b> A and the first tapered surface portion 131 </ b> A located at the lower portion of the outer peripheral surface thereof and positioned above the first tapered surface portion 131 </ b> A Second tapered surface portion 131B. 131 A of 1st taper surface parts and the 2nd taper surface part 131B are each inclined so that it may reduce in diameter as it goes to an axial direction outward, and the inclination direction is made into the mutually opposite direction. The axial dimension of the first tapered surface portion 131A is set to be thicker than that of the second tapered surface portion 131B.

砥石１３１に対し仕上げドレスする場合には、砥石操作部５０は制御部７０の指示に基づき、砥石１３１をドレス加工位置（図１１中、左側）まで移動し、砥石１３１をドレス６１に当てて、砥石ドレス部６０は砥石１３１の仕上げドレスを行う。このとき、制御部７０は、砥石１３１の外周面とドレス６１が垂直に当たるように砥石操作部５０を指示する。より具体的には、砥石回転部４０のスピンドル部４２を傾けた状態で並進駆動させ、この姿勢を保持した状態で砥石１３１をドレス６１に当てることで砥石１３１の斜面を形成する。   When finishing dressing on the grindstone 131, the grindstone operating unit 50 moves the grindstone 131 to the dressing position (left side in FIG. 11) based on an instruction from the control unit 70, hits the grindstone 131 against the dress 61, The grindstone dressing unit 60 performs a finishing dress of the grindstone 131. At this time, the control unit 70 instructs the grindstone operation unit 50 so that the outer peripheral surface of the grindstone 131 and the dress 61 are in perpendicular contact with each other. More specifically, the spindle 42 of the grindstone rotating unit 40 is translationally driven in an inclined state, and the grindstone 131 is applied to the dress 61 while maintaining this posture, thereby forming the slope of the grindstone 131.

また、本実施形態では、図１１に示すように、ワークとして一対の軌道溝９２，９２を有する軸受内輪９１が軸受回転テーブル２０に設置される。軸受内輪９１は、図１３に示すように、内輪９１の中央部に大鍔部９３が形成され、両端部に一対の小鍔部９４，９４がそれぞれ形成されており、また、大鍔部９３と小鍔部９４との間に軌道溝９２がそれぞれ形成されている。   In the present embodiment, as shown in FIG. 11, a bearing inner ring 91 having a pair of raceway grooves 92 and 92 as a work is installed on the bearing rotary table 20. As shown in FIG. 13, the bearing inner ring 91 has a large collar portion 93 formed at the center of the inner ring 91, a pair of small collar portions 94, 94 formed at both ends, and the large collar portion 93. Track grooves 92 are respectively formed between the small flange portion 94 and the small flange portion 94.

ここで、この軸受内輪９１の大鍔部９３に対し研削加工を行うためには、制御部７０が記憶部７１から軸受内輪９１の位置形状情報、及び砥石１３１の位置形状情報を読み込むよう、制御部７０に対し入力装置を用いて外部から指示する。そして、軸受内輪９１が軸受回転テーブル部２０に保持され回転された状態で、制御部７０は、記憶部７１の座標系関連情報群及び砥石操作部５０のサーボモータの駆動情報に基づき、砥石１３１の第２テーパ面部１３１Ｂを大鍔部９３の側面部に当てて研削する。なお、軌道溝９２の研削加工は、前述した砥石４１のような円筒形状の砥石を用いて行われる。   Here, in order to perform grinding on the large collar portion 93 of the bearing inner ring 91, the control unit 70 is controlled so as to read the position shape information of the bearing inner ring 91 and the position shape information of the grindstone 131 from the storage unit 71. The unit 70 is instructed from the outside using an input device. Then, in a state where the bearing inner ring 91 is held and rotated by the bearing rotary table unit 20, the control unit 70 is based on the coordinate system related information group in the storage unit 71 and the drive information of the servo motor of the grindstone operation unit 50. The second taper surface portion 131B is applied to the side surface portion of the large collar portion 93 and ground. The grinding of the raceway groove 92 is performed using a cylindrical grindstone such as the grindstone 41 described above.

以上説明したように、本実施形態の研削加工装置１０Ｂによれば、大鍔部９３及び一対の小鍔部９４，９４を有する軸受内輪９１など、複雑な軸受形状に対しても、装置から軸受内輪９１を取り外すことなく研削加工を自動的に且つ精度良く行うことができる。
その他の構成及び作用効果については、上記第１実施形態と同様である。 As described above, according to the grinding apparatus 10B of the present embodiment, the bearings from the apparatus to a complicated bearing shape such as the bearing inner ring 91 having the large flange portion 93 and the pair of small flange portions 94, 94 are also provided. Grinding can be performed automatically and accurately without removing the inner ring 91.
About another structure and an effect, it is the same as that of the said 1st Embodiment.

なお、本発明は上記実施形態に例示したもの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において適宜変更可能である。
例えば、砥石ドレス部６０が更にサーボモータを有し、この砥石ドレス部６０のサーボモータが駆動することによりドレス６１を移動させ、また砥石ドレス部６０のドレス６１の移動は回転移動を含み、そして制御部７０は、ドレス６０の回転移動をも考慮して砥石操作部５０及び砥石ドレス部６０を制御するようにしてもよい。この場合には、砥石が、例えば、球状、傾斜面又は曲面を有する複雑な形状であっても、ドレス６１が砥石の外周面に対し常に垂直に当たるため、精度の良い仕上げドレスを行うことができる。
例えば、軸受検出部３０を砥石操作部５０に直接取り付けたが、ツールチェンジャを備える研削加工装置の場合には、無線式にして砥石回転テーブル部２０に取り付けるようにしてもよい。 In addition, this invention is not limited to what was illustrated to the said embodiment, In the range which does not deviate from the summary of this invention, it can change suitably.
For example, the grindstone dressing portion 60 further has a servo motor, and the servomotor of the grindstone dressing portion 60 is driven to move the dress 61, and the movement of the dress 61 of the grindstone dressing portion 60 includes rotational movement, and The control unit 70 may control the grindstone operating unit 50 and the grindstone dressing unit 60 in consideration of the rotational movement of the dress 60. In this case, even if the grindstone is a complicated shape having, for example, a spherical shape, an inclined surface, or a curved surface, the dress 61 is always perpendicular to the outer peripheral surface of the grindstone, so that a highly accurate finish dress can be performed. .
For example, the bearing detection unit 30 is directly attached to the grindstone operation unit 50. However, in the case of a grinding apparatus equipped with a tool changer, the bearing detection unit 30 may be wirelessly attached to the grindstone rotary table unit 20.

１，８１，９１ 軸受内輪（ワーク、軸受軌道輪）
１０Ａ，１０Ｂ 研削加工装置
２０ 軸受回転テーブル部（ワーク回転テーブル部）
２１ 主軸テーブル部
２２ チャック部
２３ ノーズピース
３０ 軸受検出部（ワーク検出部）
３１ 接触子
３２ ベース部
３３ 並進駆動部
４０ 砥石回転部
４１，１０１，１１１，１１６，１３１ 砥石
４２ スピンドル部
５０ 砥石操作部
５１ ベース部
５２ 並進駆動部
５３ 並進回転駆動部
６０ 砥石ドレス部
６１ ドレス
６２ ベース部
６３ 柱部
７０ 制御部
７１ 記憶部 1,81,91 Bearing inner ring (workpiece, bearing raceway)
10A, 10B Grinding machine 20 Bearing rotary table part (work rotary table part)
21 Spindle table part 22 Chuck part 23 Nosepiece 30 Bearing detection part (work detection part)
DESCRIPTION OF SYMBOLS 31 Contact 32 Base part 33 Translation drive part 40 Grinding wheel rotation part 41,101,111,116,131 Grinding wheel 42 Spindle part 50 Grinding wheel operation part 51 Base part 52 Translation drive part 53 Translation rotation drive part 60 Grinding wheel dress part 61 Dress 62 Base part 63 Column part 70 Control part 71 Storage part

Claims (6)

ワークを保持すると共に、前記ワークの軸線回りに前記ワークを回転駆動するワーク回転テーブル部と、
前記ワーク回転テーブル部に保持された前記ワークの位置及び形状を検出するワーク検出部と、
砥石を保持すると共に、前記砥石の軸線回りに前記砥石を回転駆動する砥石回転部と、
先端部に前記砥石回転部が固設され、前記砥石を移動させる砥石操作部と、
ドレスを有し、前記砥石に対して仕上げドレスを行う砥石ドレス部と、
記憶部を有すると共に、前記ワーク回転テーブル部、前記ワーク検出部、前記砥石回転部、前記砥石操作部、前記砥石ドレス部の動作をそれぞれ制御する制御部と、を備える研削加工装置であって、
前記ワーク検出部は、接触子を有し、前記接触子を前記ワークに接触させることで前記ワークの位置及び形状を検出し、
前記砥石操作部はサーボモータを有し、前記砥石操作部の前記サーボモータが駆動することで前記砥石を移動させ、
前記制御部の前記記憶部には、前記ワークの、前記ワーク基準原点を基準とした位置形状情報と、前記砥石の、砥石基準原点を基準とした位置形状情報と、前記砥石回転部での前記砥石の取付位置情報と、前記砥石操作部での前記砥石回転部の取付位置情報と、前記砥石操作部の、所定の基準座標系を基準とした座標系情報と、前記砥石ドレス部の、前記所定の基準座標系を基準とした座標系情報と、の座標系関連情報群が格納され、
前記制御部は、前記記憶部の前記座標系関連情報群、及び前記砥石操作部の前記サーボモータの駆動情報に基づき、前記ワーク、前記砥石、及びドレスそれぞれの座標系を統合して前記砥石操作部を制御することにより、前記砥石の位置決めを行うことを特徴とする研削加工装置。 A work rotation table unit for holding the work and driving the work to rotate about the axis of the work;
A workpiece detection unit for detecting the position and shape of the workpiece held by the workpiece rotation table unit;
While holding the grindstone, a grindstone rotating unit that rotationally drives the grindstone about the axis of the grindstone,
The grindstone rotating unit is fixed to the tip, and a grindstone operating unit that moves the grindstone,
A grindstone dress portion having a dress and performing a finishing dress on the grindstone,
A grinding device comprising a storage unit, and a control unit that controls the operation of the workpiece rotation table unit, the workpiece detection unit, the grindstone rotation unit, the grindstone operation unit, and the grindstone dressing unit,
The work detection unit has a contact, and detects the position and shape of the work by bringing the contact into contact with the work.
The grindstone operating unit has a servo motor, and the grindstone is moved by driving the servo motor of the grindstone operating unit,
In the storage unit of the control unit, position and shape information of the workpiece with reference to the workpiece reference origin, position and shape information of the grindstone with reference to the reference point of the grindstone, and the grinding wheel rotation unit The mounting position information of the grindstone, the mounting position information of the grindstone rotating part in the grindstone operating part, the coordinate system information of the grindstone operating part with reference to a predetermined reference coordinate system, and the grindstone dressing part, Coordinate system information based on a predetermined reference coordinate system and a coordinate system related information group are stored,
The control unit integrates the coordinate systems of the workpiece, the grindstone, and the dress based on the coordinate system related information group of the storage unit and the drive information of the servo motor of the grindstone operation unit, and operates the grindstone. The grinding apparatus characterized by positioning the said grindstone by controlling a part. 前記記憶部には、前記ワークの目標形状情報が更に格納されており、
前記ワーク検出部は、前記ワークの現形状を検出し、
前記制御部は、前記目標形状情報と、前記ワーク検出部が検出した前記現形状と、を比較して前記ワークに対する残研削加工量を算出して前記砥石操作部を制御することを特徴とする請求項１に記載の研削加工装置。 The storage unit further stores target shape information of the workpiece,
The workpiece detection unit detects the current shape of the workpiece,
The control unit compares the target shape information with the current shape detected by the workpiece detection unit, calculates a remaining grinding amount for the workpiece, and controls the grindstone operation unit. The grinding apparatus according to claim 1. 前記砥石の移動は並進移動のみならず回転移動も含み、
前記制御部は、前記砥石の前記回転移動をも考慮して前記砥石操作部を制御することを特徴とする請求項１又は２に記載の砥石加工装置。 The movement of the grindstone includes not only translational movement but also rotational movement,
The grindstone processing apparatus according to claim 1, wherein the control unit controls the grindstone operation unit in consideration of the rotational movement of the grindstone. 前記砥石ドレス部はサーボモータを有し、前記砥石ドレス部の前記サーボモータが駆動することにより前記ドレスを移動させ、
前記砥石ドレス部の前記ドレスの移動は回転移動を含み、
前記制御部は、前記ドレスの前記回転移動をも考慮して前記砥石操作部及び前記砥石ドレス部を制御することを特徴とする請求項１〜３のいずれか１項に記載の研削加工装置。 The grindstone dress part has a servo motor, and the servo motor of the grindstone dress part is driven to move the dress,
The movement of the dress of the grindstone dress portion includes rotational movement,
The grinding device according to any one of claims 1 to 3, wherein the control unit controls the grindstone operation unit and the grindstone dress unit in consideration of the rotational movement of the dress. 前記制御部は、前記ワークに対し実際に研削加工する前に、少なくとも前記砥石操作部を制御して、前記ワーク及び前記ドレスに対し所定の余裕隙間をもった試し動作を行うことを特徴とする請求項１〜４のいずれか１項に記載の研削加工装置。   The control unit controls at least the grindstone operation unit before actually grinding the workpiece, and performs a trial operation with a predetermined margin on the workpiece and the dress. The grinding apparatus of any one of Claims 1-4. 前記ワークは、大型の軸受軌道輪であることを特徴とする請求項１〜５のいずれか１項に記載の研削加工装置。   The grinding apparatus according to claim 1, wherein the workpiece is a large bearing ring.
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JP2018069391A (en) * 2016-10-31 2018-05-10 日本精工株式会社 Grinding device
JP2018202601A (en) * 2017-11-30 2018-12-27 株式会社日立プラントコンストラクション Grinder for height of comb-shaped lip of labyrinth packing
JP2020069550A (en) * 2018-10-30 2020-05-07 株式会社アマダホールディングス Work-piece processing system and work-piece processing method
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