JP2006110699A - Cylindrical gear grinder - Google Patents

Cylindrical gear grinder Download PDF

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JP2006110699A
JP2006110699A JP2004303153A JP2004303153A JP2006110699A JP 2006110699 A JP2006110699 A JP 2006110699A JP 2004303153 A JP2004303153 A JP 2004303153A JP 2004303153 A JP2004303153 A JP 2004303153A JP 2006110699 A JP2006110699 A JP 2006110699A
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grindstone
spindle
dresser
workpiece
grinding
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JP4541097B2 (en
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Hiroshi Yoshikawa
広 吉川
Taiji Sano
泰司 佐野
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Yutaka Seimitsu Kogyo Ltd
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Yutaka Seimitsu Kogyo Ltd
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Abstract

<P>PROBLEM TO BE SOLVED: To simplify constitution of a cylindrical gear grinder to grind a gear to be ground by generating grinding. <P>SOLUTION: A work piece spindle stock 12 holding a work piece spindle 26 free to rotate around a rotating axis in parallel in the vertical direction. A grindstone spindle stock 44 holding a grindstone spindle 86 free to rotate around a rotating axis extending in the cross direction is moved in the longitudinal and cross directions and revolved around a revolving axis in parallel in the longitudinal direction. The work piece spindle stock 12 is provided on the front side of the grindstone spindle stock 44, and a dresser base 110 is fixed on its left side surface. A relative position of a grindstone 90 and the gear to be ground 32 is adjusted by relative movement of the grindstone spindle stock 44 and the work piece spindle stock 12, and the grindstone 90 is made to grind the gear to be ground 32 by generating generating grinding motion by synchronous rotation of the grindstone spindle 86 and the work piece spindle 26. Dressing is carried out by making a dresser 112 and the grindstone 90 both rotating contact with each other and giving dressing motion in the cross direction synchronous with rotation of the grindstone 90 to the grindstone spindle stock 44. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

本発明は、円筒歯車研削盤に関するものであり、特に、ドレッサを備え、砥石をドレッシングする機能を有する円筒歯車研削盤に関するものである。   The present invention relates to a cylindrical gear grinder, and more particularly to a cylindrical gear grinder having a dresser and a function of dressing a grindstone.

砥石のドレッシング機能を備えた円筒歯車研削盤は、例えば、下記の特許文献１に記載されているように広く知られている。特許文献１に記載の円筒歯車研削盤において研削に使用される砥石は、被研削歯車の歯形に応じた形状の研削歯を備え、被研削歯車の歯を１歯ずつ研削する。いわゆる成形研削により被研削歯車の歯を研削するのである。この砥石の研削歯はドレッシングにより形成される。そのため、砥石主軸を水平な回転軸線まわりに回転可能に保持する砥石主軸台は、砥石主軸台移動装置によって上下方向および砥石主軸の回転軸線に直角な水平方向に移動させられるとともに、その水平移動方向に平行な旋回軸線のまわりに旋回させられる。また、ドレッサ軸を回転可能に保持するドレッサ台は、被加工物主軸を回転可能に保持する被加工物主軸台と共に被加工物主軸台移動装置により、砥石の回転軸線に平行な方向に移動させられるとともに、上下方向に平行な軸線まわりに傾けられるようにされている。ドレッサ軸および被加工物主軸はそれぞれ、回転駆動装置により上下方向に平行な回転軸線まわりに回転させられ、これら砥石の水平方向，上下方向の各移動および旋回と、ドレッサの水平方向の移動および傾きとの組み合わせにより、ドレッサによって砥石にドレッシングが施される。
特開２０００−１０８０２８号公報 A cylindrical gear grinder having a grinding wheel dressing function is widely known, for example, as described in Patent Document 1 below. The grindstone used for grinding in the cylindrical gear grinding machine described in Patent Document 1 includes grinding teeth having a shape corresponding to the tooth profile of the gear to be ground, and grinds the teeth of the gear to be ground one by one. The teeth of the gear to be ground are ground by so-called forming grinding. The grinding teeth of this grindstone are formed by dressing. Therefore, the grindstone spindle that holds the grindstone spindle rotatably around the horizontal rotation axis is moved in the vertical direction and the horizontal direction perpendicular to the rotation axis of the grindstone spindle by the grindstone spindle moving device, and the horizontal movement direction Is swiveled around a swivel axis parallel to. In addition, the dresser base that rotatably holds the dresser shaft is moved in a direction parallel to the rotation axis of the grindstone by the work spindle support moving device together with the work spindle main body that rotatably holds the work spindle. And tilted about an axis parallel to the vertical direction. The dresser shaft and the workpiece spindle are each rotated around a rotation axis parallel to the vertical direction by a rotary drive device, and the horizontal and vertical movements and rotations of the grindstone, and the horizontal movement and tilt of the dresser. With the combination, the dressing is applied to the grindstone by the dresser.
JP 2000-108028 A

本発明は、以上の事情を背景として為されたものであり、いわゆる創成研削により被研削歯車の歯を研削するとともに砥石のドレッシング機能を有する円筒歯車研削盤の構成を簡略化することを課題とする。   The present invention has been made in the background of the above circumstances, and it is an object to simplify the configuration of a cylindrical gear grinding machine having a grinding wheel dressing function while grinding the teeth of a gear to be ground by so-called generating grinding. To do.

上記の課題を解決するために、本発明に係る円筒歯車研削盤は、(A)被研削歯車を保持する被加工物主軸を回転軸線まわりに回転可能に保持した被加工物主軸台と、(B)概して円筒状をなし、外周面に螺旋状の研削歯を備えた砥石を保持する砥石主軸を回転軸線まわりに回転可能に保持した砥石主軸台と、(C)それら被加工物主軸台と砥石主軸台とを相対移動させて前記砥石と前記被研削歯車との相対位置合わせを行う相対移動装置と、（Ｄ）前記被加工物主軸を回転駆動する被加工物主軸回転装置と前記砥石主軸を回転駆動する砥石主軸回転装置とそれら両回転装置を同期制御する同期制御装置とを含み、前記砥石と前記被研削歯車とに創成研削運動を付与する創成研削運動付与装置と、（Ｅ）ドレッサを保持するドレッサ軸を回転軸線まわりに回転可能に保持したドレッサ台と、(Ｆ)ドレッサ軸を回転駆動するドレッサ軸回転装置とを含み、かつ、前記ドレッサ台が前記被加工物主軸台に固定され、前記相対移動装置により前記ドレッサと前記砥石との相対位置合わせおよびドレッシング運動付与が行われることを特徴とする。
上記相対移動装置は、(a)前記砥石主軸台を前記砥石主軸の回転軸線と直交する旋回軸線まわりに旋回させ、かつ、その旋回軸線に平行なＸ軸方向および直角なＺ軸方向に移動させる砥石主軸台移動装置と、(b)前記被加工物主軸台を前記Ｘ軸方向およびＺ軸方向に直角で前記被加工物主軸に平行なＹ軸方向に移動させる被加工物主軸台移動装置とを含むものとすることができる。
前面側から見て、前記Ｘ軸方向が前後方向、前記Ｙ軸方向が上下方向、前記Ｚ軸方向が左右方向である円筒歯車研削盤においては、前記砥石主軸が右と左との一方から他方に向かって突出した先端部において前記砥石を保持し、前記被加工物主軸台が前記砥石主軸台の前側に設けられ、前記ドレッサ台が前記被加工物主軸台の前記右と左との他方の側に取り付けられる。
このドレッサ台は、前記Ｙ軸方向と平行な回動軸線まわりの姿勢を調節する姿勢調節装置を介して前記被加工物主軸台に取り付けられることが望ましい。 In order to solve the above-described problems, a cylindrical gear grinding machine according to the present invention includes (A) a workpiece spindle stock that holds a workpiece spindle that holds a workpiece gear rotatably around a rotation axis, and ( B) A grindstone spindle that holds a grindstone that is generally cylindrical and that has a grindstone with helical grinding teeth on its outer peripheral surface, and that is rotatably held around the rotation axis, and (C) the workpiece spindle stock. A relative movement device that relatively moves a grindstone spindle to align the grindstone and the gear to be ground; (D) a workpiece spindle rotation device that rotationally drives the workpiece spindle; and the grindstone spindle A grinding wheel spindle rotating device that rotationally drives the wheel and a synchronous control device that controls both of the rotating devices synchronously, and a generating grinding motion applying device that applies a generating grinding motion to the grinding wheel and the gear to be ground, and (E) a dresser The dresser shaft that holds the A dresser base that is rotatably held; and (F) a dresser shaft rotating device that rotationally drives a dresser shaft, and the dresser base is fixed to the work spindle, and the relative movement device Relative alignment with the grinding wheel and application of a dressing motion are performed.
In the relative movement device, (a) the grindstone headstock is swung around a swivel axis perpendicular to the rotation axis of the grindstone spindle, and moved in the X-axis direction parallel to the swivel axis and the Z-axis direction perpendicular to the swivel axis. A grindstone spindle moving device, and (b) a workpiece spindle moving device that moves the workpiece spindle in the Y-axis direction perpendicular to the X-axis direction and the Z-axis direction and parallel to the workpiece spindle. Can be included.
In a cylindrical gear grinding machine as viewed from the front side, the X-axis direction is the front-rear direction, the Y-axis direction is the up-down direction, and the Z-axis direction is the left-right direction. The grindstone is held at the tip portion projecting toward the workpiece, the workpiece spindle is provided on the front side of the grindstone spindle, and the dresser platform is the other of the right and left of the workpiece spindle Attached to the side.
The dresser base is preferably attached to the work spindle base via a posture adjusting device that adjusts a posture around a rotation axis parallel to the Y-axis direction.

本発明に係る円筒歯車研削盤においては、相対移動装置により被加工物と砥石との相対位置合わせが行われ、創成研削運動付与装置により創成研削運動が付与されるとともに相対移動装置の一部により被加工物と砥石とが被加工物の軸方向に相対移動させられて、砥石の研削歯により被研削歯車の歯が研削される。そのため、砥石の研削歯は螺旋状を成すものとされるが、断面形状は、成形研削を行う砥石の研削歯に比較して単純で済む。例えば、台形でよいのであり、ドレッサも円錐台状等単純な形状のもので済む。そのドレッサが取り付けられるドレッサ軸を回転可能に保持したドレッサ台と、砥石主軸台とが、砥石と被研削歯車との相対位置合わせを行う相対移動装置により相対移動させられてドレッサと砥石との相対位置合わせが行われ、ドレッサがドレッサ軸回転装置によりに回転させられるとともに相対移動装置によりドレッサと砥石とにドレッシング運動が付与されてドレッシングが行われる。
このように本円筒歯車研削盤においては、ドレッサ台が被加工物主軸台に固定されるため、ドレッサ台を独立して設ける場合に比較して占有スペースが小さくて済み、創成研削を行う円筒歯車研削盤を小形化することができる。また、ドレッサ台を移動させるための専用のドレッサ台移動装置が不要であり、円筒歯車研削盤をシンプルにかつ安価に構成することができる。例えば、ドレッサ台が砥石主軸台と共に被研削歯車に対して移動可能に設けられる場合には、砥石主軸台と被加工物主軸台とを相対移動させる装置の他に、ドレッシング開始前にドレッサ台を砥石主軸台に対して移動させ、ドレッサと砥石との相対位置合わせを行うためのドレッサ台移動装置が必要であり、構成が複雑となる上、円筒歯車研削盤が大形となる。それに対し、本発明に係る円筒歯車研削盤においては、被加工物主軸台と砥石主軸台とを相対移動させる相対移動装置が、ドレッサ台と砥石主軸台とを相対移動させる装置を兼ねており、部品点数が少なく、小形で安価な円筒歯車研削盤が得られる。
相対移動装置が砥石主軸台移動装置と被加工物主軸台移動装置とを含む場合、砥石主軸台の旋回により砥石の研削歯と被研削歯車の歯との相対的な傾きが調整されるとともに、被加工物主軸台と砥石主軸台との互いに直交するＸ軸，Ｙ軸およびＺ軸方向における相対移動により砥石と被研削歯車との相対位置が合わされ、創成研削運動により被加工歯車の研削が行われる。
「円筒歯車研削盤の前面」は、オペレータが主として円筒歯車研削盤にアクセスする側の面であり、多くの場合、円筒歯車研削盤を覆うカバーの前面側に扉が開閉可能に設けられ、作業者が扉を開けてカバー内部の装置にアクセスすることができるようにされる。被加工物主軸台は砥石主軸台の前側に設けられており、前面側にいる作業者と被加工物主軸台との距離が短く、例えば、被研削歯車の被加工物主軸に対する取付け，取外しを容易にかつ迅速に行うことができる。また、ドレッサ台が被加工物主軸台に取り付けられる場合、被加工物主軸台の左右いずれの側に取り付けられる場合であっても、前面側にいる作業者とドレッサ台との距離が短く、作業者は、メンテナンス，段取替え等の作業を容易にかつ迅速に行うことができる。例えば、円筒歯車生産ラインにおいて生産される円筒歯車の種類が変わり、生産ラインを構成する円筒歯車研削盤において円筒歯車の種類に合わせて砥石やドレッサを変更，調整する段取替えが行われる場合に、砥石の交換と共に、ドレッサの交換やドレッサと砥石との相対位置合わせ等を容易に行うことができるのである。
さらに、姿勢調節装置を含む円筒歯車研削盤においては、ドレッサのＹ軸方向と平行な回動軸線まわりの姿勢を調節することにより、例えば、円筒歯車研削盤の構成部品の寸法誤差や組立誤差等によるドレッサのドレッシング面と砥石の研削面との相対位置誤差を低減させ、ドレッシング精度を向上させることができる。その結果、高精度で作動音の少ない歯車を安価に提供することができる。 In the cylindrical gear grinding machine according to the present invention, the relative position of the workpiece and the grindstone is adjusted by the relative movement device, and the creation grinding motion is given by the creation grinding motion imparting device and part of the relative movement device. The workpiece and the grindstone are relatively moved in the axial direction of the workpiece, and the teeth of the gear to be ground are ground by the grinding teeth of the grindstone. For this reason, the grinding teeth of the grindstone are assumed to have a spiral shape, but the cross-sectional shape is simpler than the grinding teeth of the grindstone that performs forming grinding. For example, it may be trapezoidal, and the dresser may have a simple shape such as a truncated cone. The dresser base on which the dresser shaft to which the dresser is attached is rotatably held and the grindstone headstock are moved relative to each other by a relative movement device that performs relative positioning of the grindstone and the gear to be ground. Positioning is performed, the dresser is rotated by the dresser shaft rotating device, and dressing motion is applied to the dresser and the grindstone by the relative moving device to perform dressing.
Thus, in this cylindrical gear grinding machine, since the dresser base is fixed to the work spindle head, the occupied space is small compared to the case where the dresser base is provided independently, and the cylindrical gear for generating grinding is performed. The grinding machine can be miniaturized. In addition, a dedicated dresser table moving device for moving the dresser table is unnecessary, and the cylindrical gear grinding machine can be configured simply and inexpensively. For example, when the dresser base is provided so as to be movable with respect to the grinding gear together with the grindstone headstock, in addition to the device for moving the grindstone headstock and the work piece headstock relative to each other, the dresser base is set before starting dressing. A dresser base moving device for moving the wheel head spindle relative to each other and aligning the dresser and the grindstone relative to each other is necessary, and the configuration is complicated, and the cylindrical gear grinder becomes large. On the other hand, in the cylindrical gear grinding machine according to the present invention, the relative movement device that relatively moves the work spindle and the grindstone spindle serves as the device that relatively moves the dresser table and the grindstone spindle, A small and inexpensive cylindrical gear grinding machine with a small number of parts can be obtained.
When the relative moving device includes a grindstone headstock moving device and a work piece headstock moving device, the relative inclination of the grinding wheel tooth and the gear tooth to be ground is adjusted by turning the grindstone headstock, The relative position of the workpiece spindle and the grinding wheel spindle in the X-axis, Y-axis, and Z-axis directions orthogonal to each other aligns the relative positions of the grinding wheel and the grinding wheel, and the grinding of the machining gear is performed by generating grinding motion. Is called.
The “front of the cylindrical gear grinder” is the surface on which the operator mainly accesses the cylindrical gear grinder, and in many cases, the door is provided on the front side of the cover that covers the cylindrical gear grinder so that it can be opened and closed. A person can open the door to access the device inside the cover. The work piece headstock is provided on the front side of the grindstone headstock, and the distance between the operator on the front side and the work piece headstock is short. For example, the work gear can be attached to or removed from the work piece main shaft. It can be done easily and quickly. In addition, when the dresser base is attached to the work spindle, the distance between the worker on the front side and the dresser base is short, regardless of whether the dresser base is attached to the left or right side of the work spindle. A person can easily and quickly perform operations such as maintenance and changeover. For example, when the type of cylindrical gear produced in the cylindrical gear production line changes, and a setup change that changes and adjusts the grindstone and dresser according to the type of cylindrical gear in the cylindrical gear grinding machine constituting the production line, Along with the replacement of the grindstone, it is possible to easily perform dresser replacement, relative positioning between the dresser and the grindstone, and the like.
Furthermore, in a cylindrical gear grinding machine including an attitude adjustment device, for example, by adjusting the attitude around the rotation axis parallel to the Y-axis direction of the dresser, for example, dimensional errors or assembly errors of components of the cylindrical gear grinding machine, etc. The relative position error between the dressing surface of the dresser and the grinding surface of the grindstone can be reduced, and dressing accuracy can be improved. As a result, it is possible to provide a gear with high accuracy and low operating noise at low cost.

以下、本発明の実施例を、図を参照しつつ詳しく説明する。なお、本発明は、下記実施例の他、当業者の知識に基づいて種々の変更を施した態様で実施することができる。   Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. It should be noted that the present invention can be implemented in a mode in which various modifications are made based on the knowledge of those skilled in the art, in addition to the following examples.

図１に、本発明の一実施例である円筒歯車研削盤が概略的に図示されている。図１において符号１０はベッドである。ベッド１０上には被加工物主軸台１２が設けられ、案内装置１４により案内されつつ被加工物主軸台移動装置１６（図３参照）によりＹ軸方向に移動させられる。本実施例においてＹ軸方向は上下方向である。案内装置１４は、本実施例では、１対の案内部材としてのスプラインバー１８と、被案内部材としてのスプラインナット（図示省略）と、複数のボール（図示省略）とを含むボールスプライン案内装置とされている。１対のスプラインバー１８は、Ｚ軸方向に並んでベッド１０上に立設されている。Ｚ軸方向は水平方向であり、本円筒歯車研削盤を前面側から見て左右方向である。円筒歯車研削盤の前面は、オペレータが主として円筒歯車研削盤にアクセスする側であり、本円筒歯車研削盤においては、被加工物主軸台１２と正対する側（被加工物主軸台１２にその正面から対する側）が正面側であって前面側とされている。本円筒歯車研削盤は、図示を省略するカバーにより覆われるとともに、そのカバーに扉が開閉可能に設けられ、作業者が扉を開けて円筒歯車研削盤の各種装置等についての作業を行うことができるようにされているが、カバーの前面側の部分に扉が設けられ、作業者は容易に被加工物主軸台１２にアクセスすることができる。作業者が主としてアクセスする側に扉が設けられ、その扉が設けられた側が前面側であるということもできる。スプラインナットは被加工物主軸台１２に取り付けられるとともに、ボールを循環可能に保持してスプラインバー１８に嵌合され、スプラインバー１８と共同して被加工物主軸台１２の昇降を案内する。このように案内装置１４をボールスプライン案内装置とすれば、スプラインナットとスプラインバー１８とは精度良く嵌合させることが容易であり、スプラインナットをスプラインバー１８に嵌合させた状態で被加工物主軸台１２に固定すればよく、円筒歯車研削盤の製造時にガイドレールとスライドとの摺り合わせ作業を行う必要がなくなり、容易に製造することができる。後述するリニアガイド装置により構成される案内装置についても同様である。   FIG. 1 schematically shows a cylindrical gear grinding machine according to an embodiment of the present invention. In FIG. 1, reference numeral 10 denotes a bed. A workpiece spindle stock 12 is provided on the bed 10, and is moved in the Y-axis direction by the workpiece spindle stock moving device 16 (see FIG. 3) while being guided by the guide device 14. In this embodiment, the Y-axis direction is the vertical direction. In this embodiment, the guide device 14 is a ball spline guide device including a spline bar 18 as a pair of guide members, a spline nut (not shown) as a guided member, and a plurality of balls (not shown). Has been. The pair of spline bars 18 are erected on the bed 10 side by side in the Z-axis direction. The Z-axis direction is a horizontal direction, which is the left-right direction when the cylindrical gear grinding machine is viewed from the front side. The front surface of the cylindrical gear grinder is a side on which an operator mainly accesses the cylindrical gear grinder. In the present cylindrical gear grinder, the side facing the workpiece spindle stock 12 (the front surface of the workpiece spindle stock 12 is the front). The side opposite to the front side is the front side and the front side. This cylindrical gear grinder is covered with a cover (not shown), and a door is provided on the cover so that the door can be opened and closed, so that an operator can open the door and work on various devices of the cylindrical gear grinder. However, the door is provided in the front side portion of the cover, and the operator can easily access the work spindle stock 12. It can also be said that a door is provided on the side accessed mainly by the worker, and the side on which the door is provided is the front side. The spline nut is attached to the work spindle stock 12 and holds the ball in a circulatory manner and is fitted to the spline bar 18 to guide the work spindle stock 12 to move up and down together with the spline bar 18. In this way, if the guide device 14 is a ball spline guide device, the spline nut and the spline bar 18 can be easily fitted with high precision, and the work piece can be processed with the spline nut fitted to the spline bar 18. What is necessary is just to fix to the headstock 12, and it becomes unnecessary to perform the operation | work of a guide rail and a slide at the time of manufacture of a cylindrical gear grinding machine, and it can manufacture easily. The same applies to a guide device constituted by a linear guide device to be described later.

被加工物主軸台１２は、被加工物主軸２６を上下方向に平行な回転軸線まわりに回転可能に保持しており、被加工物主軸台移動装置１６は上下方向移動用モータ（図示省略）を駆動源として構成され、被加工物主軸台１２を被加工物主軸２６に平行な上下方向の任意の位置へ移動させる。被加工物主軸２６は被加工物保持部２８を備え、心押し部材３０と共同して、被加工物としての被研削歯車３２を、その軸線が上下方向に平行となる姿勢で保持する。被研削歯車３２は、例えば、円筒歯車の一種である平歯車であり、その外周面に軸線に平行に延びる複数の歯３４を有する。被加工物主軸２６は、被加工物主軸回転装置３８（図３参照）により回転駆動される。被加工物回転装置３８は被加工物回転用モータ（図示省略）を駆動源とし、被加工物主軸２６を正逆両方向に任意の角度回転させる。   The workpiece spindle stock 12 holds the workpiece spindle 26 so as to be rotatable about a rotation axis parallel to the vertical direction, and the workpiece spindle stock moving device 16 has a vertical movement motor (not shown). It is configured as a drive source, and the workpiece spindle stock 12 is moved to an arbitrary vertical position parallel to the workpiece spindle 26. The workpiece main shaft 26 includes a workpiece holding portion 28, and holds the grinding gear 32 as a workpiece in a posture in which the axis is parallel to the vertical direction in cooperation with the tail pushing member 30. The gear 32 to be ground is, for example, a spur gear which is a kind of cylindrical gear, and has a plurality of teeth 34 extending on the outer peripheral surface thereof in parallel to the axis. The workpiece spindle 26 is rotationally driven by a workpiece spindle rotating device 38 (see FIG. 3). The workpiece rotating device 38 uses a workpiece rotating motor (not shown) as a drive source, and rotates the workpiece main shaft 26 in both forward and reverse directions by an arbitrary angle.

ベッド１０には、被加工物主軸台１２に対してＸ軸方向に隣接して砥石主軸台４４が設けられており、砥石主軸台移動装置４６により移動させられる。Ｘ軸方向は、前記Ｙ軸方向およびＺ軸方向に直角な水平方向であり、前後方向である。砥石主軸台４４は被加工物主軸台１２の後側に設けられており、被加工物主軸台１２は砥石主軸台４４の前側に設けられている。本実施例では、被加工物主軸台１２および砥石主軸台４４が並ぶ方向が前後方向であり、被加工物主軸台１２側が本円筒歯車研削盤の前面側であり、被加工物主軸台１２が円筒歯車研削盤の前部に設けられている。砥石主軸台移動装置４６は、砥石主軸台前後方向移動装置４８，砥石主軸台旋回装置５０および砥石主軸台左右方向移動装置５２を含む。砥石主軸台前後方向移動装置４８は、前後方向移動台５６および前後方向移動台駆動装置５８（図３参照）を含む。前後方向移動台５６は、ベッド１０上に案内装置６０により案内されて前後方向に移動可能に設けられている。案内装置６０は、本実施例ではリニアガイド装置により構成され、前後方向に平行に設けられた１対の案内部材としてのガイドレール６２と、ガイドレール６２に移動可能に嵌合された１対の被案内部材としてのスライダ（図示省略）と、スライダにより循環可能に保持されたボール（図示省略）とを含み、前後方向移動台５６はスライダを保持してガイドレール６２に移動可能に嵌合されている。前後方向移動台駆動装置５８は、前後方向移動用モータ（図示省略）を駆動源とし、前後方向移動台５６を前後方向において任意の位置へ移動させる。   The bed 10 is provided with a grindstone spindle 44 adjacent to the workpiece spindle 12 in the X-axis direction and is moved by a grindstone spindle moving device 46. The X-axis direction is a horizontal direction perpendicular to the Y-axis direction and the Z-axis direction, and is the front-rear direction. The grindstone spindle 44 is provided on the rear side of the workpiece spindle stock 12, and the workpiece spindle stock 12 is provided on the front side of the grindstone spindle 44. In the present embodiment, the direction in which the workpiece spindle stock 12 and the grindstone spindle stock 44 are aligned is the front-rear direction, the workpiece spindle stock 12 side is the front side of the cylindrical gear grinder, and the workpiece spindle stock 12 is It is provided in the front part of the cylindrical gear grinding machine. The grindstone spindle head moving device 46 includes a grindstone headstock front / rear direction moving device 48, a grindstone head stock turning device 50, and a grindstone head stock left / right direction moving device 52. The grindstone spindle head front / rear direction moving device 48 includes a front / rear direction moving table 56 and a front / rear direction moving table driving device 58 (see FIG. 3). The front-rear direction moving table 56 is provided on the bed 10 so as to be movable in the front-rear direction by being guided by the guide device 60. In this embodiment, the guide device 60 is constituted by a linear guide device, and a guide rail 62 as a pair of guide members provided in parallel in the front-rear direction, and a pair of movably fitted to the guide rail 62. The slider includes a slider (not shown) as a guided member and a ball (not shown) held by the slider so as to be able to circulate, and the front / rear moving table 56 is movably fitted to the guide rail 62 while holding the slider. ing. The front-rear direction moving table driving device 58 uses a front-rear direction moving motor (not shown) as a drive source, and moves the front-rear direction moving table 56 to an arbitrary position in the front-rear direction.

前後方向移動台５６上に砥石主軸台旋回装置５０が設けられている。砥石主軸台旋回装置５０は、旋回台６６および旋回台駆動装置６８（図３参照）を含む。旋回台６６は、前後方向移動台５６上に前後方向に平行な回転軸線まわりに回転可能に設けられている。旋回台駆動装置６８は砥石主軸台旋回用モータ（図示省略）を駆動源とし、旋回台６６を正逆両方向に任意の角度回転させる。   A grindstone spindle turning device 50 is provided on the longitudinal moving table 56. The grindstone spindle turning device 50 includes a turning table 66 and a turning table drive device 68 (see FIG. 3). The swivel base 66 is provided on the front-rear direction moving base 56 so as to be rotatable around a rotation axis parallel to the front-rear direction. The swivel base drive device 68 uses a grindstone head stock turn motor (not shown) as a drive source, and rotates the swivel base 66 in both forward and reverse directions at an arbitrary angle.

旋回台６６上に前記砥石主軸台左右方向移動装置５２が設けられている。砥石主軸台左右方向移動装置５２は、左右方向移動台７４および左右方向移動台駆動装置７６（図３参照）を含む。左右方向移動台７４は、旋回台６６上に案内装置７８により案内されて左右方向に移動可能に設けられている。案内装置７８は、前記案内装置６０と同様にリニアガイド装置とされており、１対のガイドレール８０，図示を省略するスライダおよびボールを備え、左右方向移動台７４はスライダを保持してガイドレール８０に移動可能に嵌合されている。左右方向移動台駆動装置７６は左右方向移動用モータ（図示省略）を駆動源とし、左右方向移動台７４を左右方向において任意の位置へ移動させる。   The grindstone spindle head lateral movement device 52 is provided on the swivel base 66. The grindstone spindle left / right movement device 52 includes a left / right movement table 74 and a left / right movement table drive device 76 (see FIG. 3). The left-right moving table 74 is provided on the swivel table 66 by a guide device 78 so as to be movable in the left-right direction. The guide device 78 is a linear guide device similar to the guide device 60, and includes a pair of guide rails 80, a slider and a ball (not shown), and the left-right moving base 74 holds the slider and guide rails. 80 is movably fitted. The left / right moving table drive device 76 uses a left / right moving motor (not shown) as a drive source, and moves the left / right moving table 74 to an arbitrary position in the left / right direction.

左右方向移動台７４上に前記砥石主軸台４４が設けられている。砥石主軸台４４は、砥石主軸８６を左右方向に平行な回転軸線まわりに回転可能に保持しており、砥石主軸８６は、本実施例では、本円筒歯車研削盤を前面側から見て、右から左に向かって突出させられ、その突出した先端部において砥石９０を保持している。砥石９０は、概して円筒状をなし、外周面に螺旋状の研削歯９２を備えている。砥石９０は、研削歯９２が複数条の歯の砥石である場合もあり、１条歯の砥石である場合もある。砥石主軸８６は、砥石主軸回動装置９４（図３参照）により回転駆動される。砥石主軸回転装置９４は、砥石主軸回転用モータを駆動源とする。砥石主軸台４４は、旋回台６６の回転により、前後方向に平行であって、左右方向に延びる砥石主軸８６の回転軸線と直交する旋回軸線まわりに旋回させられるとともに、砥石主軸台前後方向移動装置４８および砥石主軸台左右方向移動装置５２により、旋回軸線に平行な前後方向および直角な左右方向に移動させられる。また、前記被加工物主軸台１２の移動方向である上下方向は前後方向および左右方向に直角であり、被加工物主軸台１２と砥石主軸台４４とを相対移動させる相対移動装置は、砥石主軸台移動装置４６および被加工物主軸台移動装置１６を含む。   The grindstone head stock 44 is provided on the left-right moving table 74. The grindstone spindle 44 holds the grindstone spindle 86 so as to be rotatable around a rotation axis parallel to the left-right direction. In the present embodiment, the grindstone spindle 86 is viewed from the front side when the cylindrical gear grinder is viewed from the right side. The grindstone 90 is held at the projected tip portion. The grindstone 90 has a generally cylindrical shape and is provided with helical grinding teeth 92 on the outer peripheral surface. In the grindstone 90, the grinding teeth 92 may be a grindstone having a plurality of teeth, or may be a grindstone having a single tooth. The grindstone spindle 86 is rotationally driven by a grindstone spindle turning device 94 (see FIG. 3). The grinding wheel spindle rotating device 94 uses a grinding wheel spindle rotating motor as a drive source. The grindstone spindle 44 is swung around a swivel axis parallel to the front-rear direction and orthogonal to the rotation axis of the grindstone spindle 86 extending in the left-right direction by the rotation of the swivel base 66, and the grindstone main-spindle front-rear direction moving device 48 and the grindstone headstock horizontal movement device 52 are moved in the front-rear direction parallel to the turning axis and in the right-left direction perpendicular thereto. Further, the vertical direction, which is the moving direction of the workpiece spindle stock 12, is perpendicular to the front-rear direction and the left-right direction, and the relative movement device that relatively moves the workpiece spindle stock 12 and the grindstone spindle 44 is a grindstone spindle. A platform moving device 46 and a work spindle stock moving device 16 are included.

図１に示すように、本円筒歯車研削盤を前面側から見て、前記被加工物主軸台１２の左側の側面であって、砥石主軸８６が突出させられた側の側面にドレッサ台１１０が取り付けられ、図２に示すように、ドレッサ１１２を保持するドレッサ軸１１４を左右方向に平行な回転軸線まわりに回転可能に保持している。本実施例では、ドレッサ台１１０は、図２に示すように、姿勢調節装置１２０を介して被加工物主軸台１２に取り付けられ、Ｙ軸方向と平行な回動軸線まわりの姿勢が調節される。姿勢調節装置１２０は、本円筒歯車研削盤を前面側から見て、被加工物主軸台１２から左方へ延び出させられ、被加工物主軸台１２に着脱可能に固定されて支持部ないし取付部を構成する支持部材ないし取付部材１２２に上下方向に立設された支持軸１２６と、支持軸１２６の軸線を含み、砥石９０の回転軸線に平行な鉛直面内において、本円筒歯車研削盤を前面側から見て支持軸１２６の軸線から左方へ離れた位置に立設された固定装置の一種であるボルト１２８とを含む。支持軸１２６により、ドレッサ台支持部材１３０が上下方向に平行な軸線まわりに回動可能に支持されるとともに、長穴１３２においてボルト１２８の軸部に、長穴１３２の長手方向に沿って相対移動可能に嵌合されている。長穴１３２は、支持軸１２６の軸線を中心とする部分円弧状を成す。   As shown in FIG. 1, when the cylindrical gear grinding machine is viewed from the front side, a dresser base 110 is provided on the left side surface of the workpiece spindle stock 12 and on the side surface on which the grindstone spindle 86 is projected. As shown in FIG. 2, the dresser shaft 114 that holds the dresser 112 is rotatably held around a rotation axis parallel to the left-right direction. In this embodiment, as shown in FIG. 2, the dresser base 110 is attached to the work spindle 12 via the attitude adjustment device 120, and the attitude around the rotation axis parallel to the Y-axis direction is adjusted. . The posture adjusting device 120 is extended from the workpiece head stock 12 to the left when the cylindrical gear grinding machine is viewed from the front side, and is detachably fixed to the workpiece stock stock 12 so as to be supported or attached. The cylindrical gear grinder is arranged in a vertical plane that includes a support shaft 126 erected in the vertical direction on the support member or mounting member 122 that constitutes the portion and the axis of the support shaft 126 and is parallel to the rotational axis of the grindstone 90. And a bolt 128 which is a kind of a fixing device standing upright from the axis of the support shaft 126 as viewed from the front side. The dresser base support member 130 is supported by the support shaft 126 so as to be rotatable about an axis parallel to the vertical direction, and is moved relative to the shaft portion of the bolt 128 in the elongated hole 132 along the longitudinal direction of the elongated hole 132. It can be fitted. The elongated hole 132 has a partial arc shape centering on the axis of the support shaft 126.

ドレッサ台支持部材１３０は被加工物主軸台１２から砥石主軸台４４側へ突出させられ、その突出部にドレッサ台１１０が着脱可能に固定されている。本実施例では、ドレッサ１１２は１対設けられ、それぞれドレッサ軸１１４により保持されている。これらドレッサ１１２はそれぞれ、円錐台形を成し、その回転軸線を中心とする截頭円錐面状のドレッシング面１４０を備えている。２つのドレッサ軸１１４は、ドレッサ台１１０に左右方向に平行な回転軸線まわりに回転可能に、かつ同心状に保持されており、それらドレッサ軸１１４の互いに対向する側の端部にドレッサ１１２が、互いに接近するほどドレッシング面１４０の直径が増大する向きに保持されている。２つのドレッサ軸１１４はそれぞれ、ドレッサ軸回転装置１４２により回転駆動される。ドレッサ軸回転装置１４２はドレッサ軸回転用モータを駆動源とする。   The dresser base support member 130 is protruded from the work spindle 12 to the grindstone spindle 44 side, and the dresser base 110 is detachably fixed to the protruding portion. In this embodiment, a pair of dressers 112 are provided and are held by dresser shafts 114, respectively. Each of these dressers 112 has a frustoconical shape, and includes a frustoconical dressing surface 140 centered on the rotational axis thereof. The two dresser shafts 114 are held concentrically by the dresser base 110 so as to be rotatable around a rotation axis parallel to the left-right direction, and the dresser 112 is provided at the end of the dresser shafts 114 facing each other. The dressing surface 140 is held in such a direction that the diameter increases as they approach each other. Each of the two dresser shafts 114 is rotationally driven by a dresser shaft rotating device 142. The dresser shaft rotating device 142 uses a dresser shaft rotating motor as a drive source.

本円筒歯車研削盤は、図３に示す制御装置１５０により制御される。制御装置１５０はＣＰＵ１５２，ＲＯＭ１５４，ＲＡＭ１５６およびそれらを接続するバスを含むコンピュータ１６０を主体とするものである。コンピュータ１６０には入出力インタフェース１６４が接続されるとともに、駆動回路１６６を介して前記被加工物主軸台移動装置１６等を制御する。これら被加工物主軸台移動装置１６等の駆動源を構成するモータは、アクチュエータの一種であり、本実施例においては、電動モータの一種である電動回転モータであって、回転角度の正確な制御が可能な電動モータの一種であるサーボモータであり、エンコーダ付サーボモータとされている。サーボモータに代えてステップモータを用いてもよい。ＲＯＭ１５４には、被研削歯車３２の歯３４の研削を行うためのプログラム，砥石９０をドレッシングするためのプログラム等、各種プログラムおよびデータ等が記憶されている。   The cylindrical gear grinding machine is controlled by a control device 150 shown in FIG. The control device 150 mainly includes a CPU 152, a ROM 154, a RAM 156, and a computer 160 including a bus connecting them. An input / output interface 164 is connected to the computer 160, and the workpiece spindle stock moving device 16 and the like are controlled via a drive circuit 166. The motor constituting the drive source of the workpiece head moving device 16 or the like is a kind of actuator, and in this embodiment, is an electric rotary motor that is a kind of electric motor, and accurately controls the rotation angle. It is a servo motor that is a kind of electric motor that can be used, and is a servo motor with an encoder. A step motor may be used instead of the servo motor. The ROM 154 stores various programs and data, such as a program for grinding the teeth 34 of the gear to be ground 32, a program for dressing the grindstone 90, and the like.

以上のように構成された円筒歯車研削盤においては、砥石９０の研削歯９２によって被研削歯車３２の歯３４に研削加工が施される。この際、被研削歯車３２は被加工物主軸２６により保持され、砥石９０は砥石主軸８６により保持されるとともに、砥石主軸台４４が砥石主軸台旋回装置５０により旋回させられ、砥石９０の傾きが調整される。被研削歯車３２は、回転軸線まわりにおいて予め定められた位置に位置決めされ、停止させられており、砥石９０も回転軸線まわりにおいて定位置に位置決めされ、停止させられている。これら砥石９０および被研削歯車３２の各定位相位置は、それらが研削開始位置に位置決めされて研削が開始されるとき、研削歯９２と歯３４とが噛み合って、研削歯９２が歯３４に研削を施すことができる位置である。この状態から、砥石主軸台４４が、砥石主軸台前後方向移動装置４８により前後方向に、砥石主軸台左右方向移動装置５２により左右方向にそれぞれ移動させられるとともに、被加工物主軸台１２が被加工物主軸台移動装置１６により上下方向に移動させられて、砥石９０と被研削歯車３２とが予め定められた研削開始位置に位置決めされる。その後、砥石主軸８６および被加工物主軸２６が同期回転させられつつ、研削が開始される。被加工物主軸２６は、砥石９０が１回転させられる間に１歯分（砥石９０が１条歯砥石であれば１歯分、２条歯砥石であれば２歯分）回転させられるとともに上下方向に送りを与えられる。このように被加工物主軸２６と砥石主軸８６との同期回転により付与される創成研削運動と、上下方向の相対移動により付与される送りとにより、研削歯９２による歯３４の研削が行われる。図４に示すように、被加工物主軸回転装置３８および砥石主軸回転装置９４が第一同期制御装置１７０により同期制御され、被加工物主軸２６および砥石主軸８６が同期回転させられ、その間、被加工物主軸台移動装置１６が送り制御装置１７２により制御されて被加工物主軸２６が上下方向に移動させられるのである。第一同期制御装置１７０は、制御装置１５０の被加工物主軸回転装置３８および砥石主軸回転装置９４を制御する部分を含み、被加工物主軸回転装置３８および砥石主軸回転装置９４と共に創成研削運動付与装置１７４を構成している。また、送り制御装置１７２は、制御装置１５０の被加工物主軸台移動装置１６を制御する部分を含み、被加工物主軸台移動装置１６および創成研削運動付与装置１７４と共に研削制御装置１７６を構成している。本実施例では、相対移動装置の一部である被加工物主軸台移動装置１６は、被研削歯車３２と砥石９０との位置を合わせる相対位置合わせ装置としても、研削時の送り装置としても機能する。   In the cylindrical gear grinding machine configured as described above, the teeth 34 of the gear to be ground 32 are ground by the grinding teeth 92 of the grindstone 90. At this time, the to-be-ground gear 32 is held by the workpiece spindle 26, the grindstone 90 is held by the grindstone spindle 86, and the grindstone spindle 44 is turned by the grindstone spindle turning device 50, so that the inclination of the grindstone 90 is inclined. Adjusted. The ground gear 32 is positioned and stopped at a predetermined position around the rotation axis, and the grindstone 90 is also positioned and stopped at a fixed position around the rotation axis. The respective constant phase positions of the grindstone 90 and the gear to be ground 32 are positioned at the grinding start position and when grinding is started, the grinding teeth 92 and the teeth 34 mesh with each other, and the grinding teeth 92 are ground to the teeth 34. It is a position where can be applied. From this state, the grindstone headstock 44 is moved in the front-rear direction by the grindstone headstock back-and-forth movement device 48 and in the left-right direction by the grindstone headstock left-right movement device 52, and the work piece headstock 12 is processed. The grindstone 90 and the gear to be ground 32 are moved to a predetermined grinding start position by being moved in the vertical direction by the workpiece head stock moving device 16. Thereafter, grinding is started while the grindstone spindle 86 and the workpiece spindle 26 are rotated synchronously. The work spindle 26 is rotated by one tooth while the grindstone 90 is rotated once (one tooth if the grindstone 90 is a single-tooth grindstone, and two teeth if the grindstone 90 is two-grind grindstone) and up and down. Feeded in the direction. Thus, the teeth 34 are ground by the grinding teeth 92 by the generating grinding motion given by the synchronous rotation of the workpiece spindle 26 and the grindstone spindle 86 and the feed given by the relative movement in the vertical direction. As shown in FIG. 4, the workpiece spindle rotating device 38 and the grindstone spindle rotating device 94 are synchronously controlled by the first synchronization control device 170, and the workpiece spindle 26 and the grindstone spindle 86 are synchronously rotated. The workpiece spindle moving device 16 is controlled by the feed control device 172, and the workpiece spindle 26 is moved in the vertical direction. The first synchronous control device 170 includes a portion for controlling the workpiece spindle rotating device 38 and the grindstone spindle rotating device 94 of the control device 150, and a generating grinding motion is imparted together with the workpiece spindle rotating device 38 and the grindstone spindle rotating device 94. A device 174 is configured. Further, the feed control device 172 includes a part for controlling the workpiece spindle moving device 16 of the control device 150, and constitutes a grinding control device 176 together with the workpiece spindle moving device 16 and the generating grinding motion applying device 174. ing. In the present embodiment, the workpiece head stock moving device 16 which is a part of the relative moving device functions as a relative positioning device for aligning the positions of the gear to be ground 32 and the grindstone 90 and also as a feeding device during grinding. To do.

砥石９０にドレッシングを施す必要が生じた場合には、砥石主軸台４４が砥石主軸台前後方向移動装置４８および砥石主軸台左右方向移動装置５２によって前後方向および左右方向に移動させられるとともに、ドレッサ台１１０が被加工物主軸台移動装置１６により上下方向に移動させられ、砥石９０とドレッサ１１２とがドレッシング開始位置に位置決めされる。その際、必要であれば、ドレッサ１１２は、上下方向の軸線まわりの姿勢が調整され、ドレッシング面１４０の研削歯９２に対する傾斜角度が調整される。この調整は作業者によって行われる。ボルト１２８の螺合を緩め、ドレッサ台支持部材１３０を支持軸１２６のまわりに回動させてドレッサ台１１０の上下方向に平行な軸線まわりの姿勢を調節し、調節後、ボルト１２８を締め付けてドレッサ台支持部材１３０を取付部１２２に固定する。ドレッサ台１１０は、砥石主軸台４４の前側に設けられ、本円筒歯車研削盤の前部に位置する被加工物主軸台１２に取り付けられているため、前面側に位置する作業者とドレッサ台１１０との距離が短く、作業者は円筒歯車研削盤を覆うカバーの扉を開け、ドレッサ台１１０の姿勢を容易に調整することができる。また、ドレッサ台１１０は被加工物主軸台１２の、本研削盤を前面側から見て左側面に取り付けられ、砥石主軸８６が突出させられた側と同じ側に取り付けられており、ドレッサ１１２と砥石９０とが左右方向において近く、それらの位置決めやドレッシングが容易に行われる。   When it is necessary to perform dressing on the grindstone 90, the grindstone headstock 44 is moved in the front-rear direction and the left-right direction by the grindstone headstock front-back direction moving device 48 and the grindstone headstock left-right direction moving device 52, and the dresser base 110 is moved in the vertical direction by the workpiece head stock moving device 16, and the grindstone 90 and the dresser 112 are positioned at the dressing start position. At that time, if necessary, the dresser 112 is adjusted in the posture around the vertical axis, and the inclination angle of the dressing surface 140 with respect to the grinding teeth 92 is adjusted. This adjustment is performed by the operator. The screw 128 is loosened and the dresser base support member 130 is rotated around the support shaft 126 to adjust the posture around the axis parallel to the vertical direction of the dresser base 110. After the adjustment, the bolt 128 is tightened to tighten the dresser. The base support member 130 is fixed to the attachment portion 122. Since the dresser base 110 is provided on the front side of the grindstone main spindle 44 and is attached to the workpiece main spindle 12 positioned at the front part of the cylindrical gear grinding machine, the dresser base 110 and the operator positioned on the front side are arranged. The operator can easily adjust the posture of the dresser base 110 by opening the door of the cover that covers the cylindrical gear grinding machine. Further, the dresser base 110 is attached to the left side of the work spindle stock 12 when the main grinding machine is viewed from the front side, and is attached to the same side as the side from which the grindstone spindle 86 is projected. The grindstone 90 is close in the left-right direction, and positioning and dressing thereof are easily performed.

砥石９０とドレッサ１１２とのドレッシング開始位置への位置決め後、ドレッサ１１２および砥石９０が回転させられるとともに、砥石主軸台左右方向移動装置５２によって砥石主軸台４４が砥石９０の回転に同期して左右方向に移動させられることにより、ドレッシング運動が付与され、図２に二点鎖線で示すように、ドレッサ１１２のドレッシング面１４０による砥石９０の研削歯９２の歯面のドレッシングが行われる。２枚のドレッサ１１２はそれぞれ、研削歯９２の異なる部分であって、砥石９０の回転軸線に平行な方向に隔たった２部分の互いに逆向きの歯面を同時にドレッシングする。研削歯９２の両側の歯面が同時にドレッシングされるのである。この際、図５に示すように、砥石主軸回転装置９４および左右方向移動台駆動装置７６が第二同期制御装置１８０により同期制御され、回転に送りが同期させられる。第二同期制御装置１８０は、制御装置１５０の砥石主軸回転装置９４および左右方向移動台駆動装置７６を制御する部分を含み、砥石主軸回転装置９４および左右方向移動台駆動装置７６と共にドレッシング運動付与装置１８２を構成している。本研削盤においては、相対移動装置の一部である砥石主軸台左右方向移動装置５２が、砥石９０とドレッサ１１２との位置を合わせる相対位置合わせ装置としても、ドレッシング時の送り装置としても機能する。   After positioning the grindstone 90 and the dresser 112 to the dressing start position, the dresser 112 and the grindstone 90 are rotated, and the grindstone spindle stock 44 is moved in the left-right direction in synchronization with the rotation of the grindstone 90 by the grindstone spindle stock horizontal movement device 52. As shown in FIG. 2 by a two-dot chain line, the dressing surface 140 of the dresser 112 dresses the tooth surface of the grinding tooth 92 of the grindstone 90. Each of the two dressers 112 simultaneously dresses two different tooth surfaces, which are different parts of the grinding tooth 92 and are separated in a direction parallel to the rotational axis of the grindstone 90. The tooth surfaces on both sides of the grinding tooth 92 are simultaneously dressed. At this time, as shown in FIG. 5, the grindstone spindle rotating device 94 and the left-right moving table driving device 76 are synchronously controlled by the second synchronization control device 180, and the feed is synchronized with the rotation. The second synchronization control device 180 includes a portion for controlling the grindstone spindle rotating device 94 and the left / right moving table driving device 76 of the control device 150, and the dressing motion applying device together with the grindstone spindle rotating device 94 and the left / right moving table driving device 76. 182. In this grinding machine, the grindstone headstock lateral movement device 52, which is a part of the relative movement device, functions as a relative positioning device that aligns the positions of the grindstone 90 and the dresser 112, and also as a feeding device during dressing. .

なお、円筒歯車研削盤は、当該円筒歯車研削盤を前面側から見て、Ｘ軸方向が左右方向、Ｙ軸方向が上下方向、Ｚ軸方向が前後方向であり、砥石主軸が後方側から前方側に向かって突出した前端部において砥石を保持し、ドレッサ台が被加工物主軸台の前端部に取り付けられたものとしてもよい。この場合でも、前面側にいる作業者とドレッサ台との距離が短く、作業者は、メンテナンス，段取替え等の作業を容易にかつ迅速に行うことができる。   In addition, the cylindrical gear grinding machine is viewed from the front side, the X-axis direction is the left-right direction, the Y-axis direction is the up-down direction, the Z-axis direction is the front-rear direction, and the grindstone spindle is forward from the rear side. The grindstone may be held at the front end protruding toward the side, and the dresser base may be attached to the front end of the work spindle. Even in this case, the distance between the operator on the front side and the dresser base is short, and the operator can easily and quickly perform operations such as maintenance and setup change.

本発明の実施例である円筒歯車研削盤を概略的に示す斜視図である。It is a perspective view which shows roughly the cylindrical gear grinding machine which is the Example of this invention. 上記円筒歯車研削盤のドレッサ台を示す平面図である。It is a top view which shows the dresser base of the said cylindrical gear grinding machine. 上記円筒歯車研削盤を制御する制御装置を示すブロック図である。It is a block diagram which shows the control apparatus which controls the said cylindrical gear grinding machine. 上記円筒歯車研削盤において行われる創成研削を機能的に説明するブロック図である。It is a block diagram functionally explaining the generating grinding performed in the said cylindrical gear grinding machine. 上記円筒歯車研削盤において行われるドレッシングを機能的に説明するブロック図である。It is a block diagram functionally explaining dressing performed in the cylindrical gear grinding machine.

符号の説明Explanation of symbols

１２：被加工物主軸台 １６：被加工物主軸台移動装置 ２６：被加工物主軸 ３２：被研削歯車 ３８：被加工物主軸回転装置 ４４：砥石主軸台 ４６：砥石主軸台移動装置 ４８：砥石主軸台前後方向移動装置 ５０：砥石主軸台旋回装置 ５２：砥石主軸台左右方向移動装置 ８６：砥石主軸 ９０：砥石 ９４：砥石主軸回転装置 １１０：ドレッサ台 １１２：ドレッサ １１４：ドレッサ軸 １２０：姿勢調節装置 １４２：ドレッサ軸回転装置 １５０：制御装置   12: Workpiece headstock 16: Workpiece headstock moving device 26: Workpiece main shaft 32: Grinding gear 38: Workpiece main shaft rotating device 44: Whetstone headstock 46: Whetstone headstock moving device 48: Whetstone Spindle head longitudinal movement device 50: Grinding wheel spindle turning device 52: Grinding wheel spindle horizontal movement device 86: Grinding wheel spindle 90: Grinding wheel 94: Grinding wheel spindle rotating device 110: Dresser stand 112: Dresser 114: Dresser shaft 120: Posture adjustment Device 142: Dresser shaft rotation device 150: Control device

Claims (4)

被研削歯車を保持する被加工物主軸を回転軸線まわりに回転可能に保持した被加工物主軸台と、
概して円筒状をなし、外周面に螺旋状の研削歯を備えた砥石を保持する砥石主軸を回転軸線まわりに回転可能に保持した砥石主軸台と、
それら被加工物主軸台と砥石主軸台とを相対移動させて前記砥石と前記被研削歯車との相対位置合わせを行う相対移動装置と、
前記被加工物主軸を回転駆動する被加工物主軸回転装置と前記砥石主軸を回転駆動する砥石主軸回転装置とそれら両回転装置を同期制御する同期制御装置とを含み、前記砥石と前記被研削歯車とに創成研削運動を付与する創成研削運動付与装置と、
ドレッサを保持するドレッサ軸を回転軸線まわりに回転可能に保持したドレッサ台と、
前記ドレッサ軸を回転駆動するドレッサ軸回転装置と
を含み、かつ、前記ドレッサ台が前記被加工物主軸台に固定され、前記相対移動装置により前記ドレッサと前記砥石との相対位置合わせおよびドレッシング運動付与が行われることを特徴とする円筒歯車研削盤。 A workpiece spindle stock that holds a workpiece spindle that holds a grinding gear rotatably about a rotation axis; and
A grindstone spindle head that holds a grindstone spindle that is generally cylindrical and that holds a grindstone having helical grinding teeth on its outer peripheral surface, and is rotatable around a rotation axis.
A relative movement device that relatively moves the workpiece headstock and the grindstone headstock to perform relative positioning of the grinding wheel and the gear to be ground;
A workpiece spindle rotating device for rotationally driving the workpiece spindle, a grinding wheel spindle rotating device for rotationally driving the grinding wheel spindle, and a synchronous control device for synchronously controlling both the rotating devices, the grinding wheel and the gear to be ground A creation grinding motion imparting device for imparting a creation grinding motion to
A dresser base that holds a dresser shaft that holds the dresser so as to be rotatable about a rotation axis;
A dresser shaft rotating device that rotationally drives the dresser shaft, and the dresser base is fixed to the work spindle, and relative positioning of the dresser and the grindstone is performed by the relative movement device and a dressing motion is applied. A cylindrical gear grinding machine characterized in that 前記相対移動装置が、
前記砥石主軸台を前記砥石主軸の回転軸線と直交する旋回軸線まわりに旋回させ、かつ、その旋回軸線に平行なＸ軸方向および直角なＺ軸方向に移動させる砥石主軸台移動装置と、
前記被加工物主軸台を前記Ｘ軸方向およびＺ軸方向に直角で前記被加工物主軸に平行なＹ軸方向に移動させる被加工物主軸台移動装置と
を含むことを特徴とする請求項１に記載の円筒歯車研削盤。 The relative movement device comprises:
A grindstone spindle stock moving device for turning the grindstone spindle stock around a turning axis perpendicular to the rotation axis of the grindstone spindle and moving in the X-axis direction and the Z-axis direction perpendicular to the turning axis.
2. A workpiece spindle stock moving device for moving the workpiece spindle stock in a Y axis direction perpendicular to the X axis direction and the Z axis direction and parallel to the workpiece spindle. The cylindrical gear grinding machine described in 1. 当該円筒歯車研削盤を前面側から見て、前記Ｘ軸方向が前後方向、前記Ｙ軸方向が上下方向、前記Ｚ軸方向が左右方向であり、前記砥石主軸が右と左との一方から他方に向かって突出した先端部において前記砥石を保持し、前記被加工物主軸台が前記砥石主軸台の前側に設けられ、前記ドレッサ台が前記被加工物主軸台の前記右と左との他方の側に取り付けられたことを特徴とする請求項２に記載の円筒歯車研削盤。   When the cylindrical gear grinder is viewed from the front side, the X-axis direction is the front-rear direction, the Y-axis direction is the up-down direction, the Z-axis direction is the left-right direction, and the grindstone spindle is from one of right and left to the other The grindstone is held at the tip portion projecting toward the workpiece, the workpiece spindle is provided on the front side of the grindstone spindle, and the dresser platform is the other of the right and left of the workpiece spindle The cylindrical gear grinding machine according to claim 2, wherein the cylindrical gear grinding machine is attached to the side. 前記ドレッサ台が、前記Ｙ軸方向と平行な回動軸線まわりの姿勢を調節する姿勢調節装置を介して前記被加工物主軸台に取り付けられたことを特徴とする請求項３に記載の円筒歯車研削盤。   The cylindrical gear according to claim 3, wherein the dresser base is attached to the work spindle stock through a posture adjusting device that adjusts a posture around a rotation axis parallel to the Y-axis direction. Grinder.
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CN106737008A (en) * 2016-12-30 2017-05-31 东莞市凯勒帝数控科技有限公司 A kind of automatic grinding processing machine of type gear part
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