JP5080530B2 - Grinding equipment - Google Patents
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- JP5080530B2 JP5080530B2 JP2009126467A JP2009126467A JP5080530B2 JP 5080530 B2 JP5080530 B2 JP 5080530B2 JP 2009126467 A JP2009126467 A JP 2009126467A JP 2009126467 A JP2009126467 A JP 2009126467A JP 5080530 B2 JP5080530 B2 JP 5080530B2
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Description
本発明は、複列円すいころ軸受における外輪の軌道面の超仕上げを行う研削装置に関する。 The present invention relates to a grinding apparatus that performs super finishing of a raceway surface of an outer ring in a double row tapered roller bearing.
自動車の車軸等の大きなラジアル荷重が加わる回転軸には、複列円すいころ軸受が使用される。複列円すいころ軸受は、エネルギロス、騒音および振動を低下させ、かつ耐久性を向上させるため、その外輪および内輪の軌道面が超仕上げにより円滑化されるのが好ましい。
円すいころ軸受の超仕上げに関し、複列ではない単列の円すいころ軸受の外輪における内側を向く軌道面の超仕上げを行う研削装置が、特許文献１に開示されている。
Double row tapered roller bearings are used for rotating shafts to which large radial loads are applied, such as automobile axles. In the double row tapered roller bearing, in order to reduce energy loss, noise and vibration, and to improve durability, it is preferable that the raceway surfaces of the outer ring and the inner ring be smoothed by superfinishing.
Regarding super finishing of tapered roller bearings, Patent Document 1 discloses a grinding apparatus that performs super finishing of a raceway surface facing inward in an outer ring of a single row tapered roller bearing that is not a double row.
特許文献１に開示された研削装置は、複列円すいころ軸受の外輪の超仕上げに使用する場合、その２つの軌道面を別々に処理する必要があり、生産効率の点で好ましくない。
本発明は、上述の問題に鑑みてなされたもので、複列円すいころ軸受の外輪の超仕上げを１度に行うことができる研削装置を提供することを目的とする。
When the grinding device disclosed in Patent Document 1 is used for super-finishing the outer ring of a double row tapered roller bearing, it is necessary to process the two raceways separately, which is not preferable in terms of production efficiency.
The present invention has been made in view of the above-described problems, and an object thereof is to provide a grinding apparatus capable of performing super finishing of the outer ring of a double row tapered roller bearing at a time.
本発明に係る研削装置は、いずれも超仕上げ砥石を保持するための第１の砥石保持装置および第２の砥石保持装置と、保持される超仕上げ砥石の研削面が向く側に対して前記第１の砥石保持装置を前進および後退させ、かつ前記第２の砥石保持装置を、前記第１の砥石保持装置の前進または後退に同期させて保持される超仕上げ砥石の研削面が向く側に対して後退および前進させる移動装置と、を有し、前記第１の砥石保持装置および前記第２の砥石保持装置は、保持する前記超仕上げ砥石をその研削面が向く側に押し出すためのエアシリンダを有し、それぞれの前進方向が１８０度逆方向であって互いに遠ざかる方向であり、移動方向から見たときに、それぞれの前進後退が重なることなく隣り合う位置で行われるように配され、前記第１の砥石保持装置および前記第２の砥石保持装置が一体に振動するように形成される。 The grinding apparatus according to the present invention includes a first grindstone holding apparatus and a second grindstone holding apparatus for holding the superfinishing grindstone, and the first grindstone of the held superfinishing grindstone with respect to the side facing the grinding surface. The first grindstone holding device is moved forward and backward, and the second grindstone holding device is held in synchronism with the forward or backward movement of the first grindstone holding device. The first grindstone holding device and the second grindstone holding device include an air cylinder for pushing the superfinishing grindstone to be held toward the side where the grinding surface faces. Each of the forward directions is 180 degrees opposite and away from each other, and when viewed from the movement direction, the forward and backward movements are performed at adjacent positions without overlapping, 1 Whetstone holding device and the second grinding wheel holding device is formed so as to vibrate together.
好ましくは、前記移動装置は、前記第１の砥石保持装置と前記第２の砥石保持装置との間に配されてこれらの移動方向に直交する方向に軸心を有するピニオンと、前記第１の砥石保持装置および前記第２の砥石保持装置にそれぞれ設けられて前記ピニオンと噛み合わされたラックと、前記第１の砥石保持装置を前進および後退させる流体圧シリンダ装置と、を有する。 Preferably, before Symbol mobile device, a pinion having an axis in a direction perpendicular to these moving direction is disposed between said first grinding wheel holding device and the second grinding wheel holding device, the first And a rack that is provided in each of the second grindstone holding device and the second grindstone holding device and meshes with the pinion, and a fluid pressure cylinder device that advances and retracts the first grindstone holding device .
本発明によると、複列円すいころ軸受の外輪の超仕上げを１度に行うことができる研削装置を提供することができる。 ADVANTAGE OF THE INVENTION According to this invention, the grinding device which can perform superfinishing of the outer ring | wheel of a double row tapered roller bearing at once can be provided.
図１は研削装置１の正面図、図２は図１におけるＡ−Ａ矢視図、図３は図２におけるＢ−Ｂ矢視図である。なお、図１は図２におけるＣ−Ｃ矢視図である。
研削装置１は、第１砥石押圧装置２、第２砥石押圧装置３、主アーム４、副アーム５、移動装置６およびオシレーション装置等からなる。
第１砥石押圧装置２は、ベース１１、加圧シリンダ１２および砥石保持部１３で構成される。
1 is a front view of the grinding apparatus 1, FIG. 2 is a view taken along the line AA in FIG. 1, and FIG. 3 is a view taken along the line BB in FIG. FIG. 1 is a CC arrow view in FIG.
The grinding device 1 includes a first grindstone pressing device 2, a second grindstone pressing device 3, a main arm 4, a sub arm 5, a moving device 6, an oscillation device, and the like.
The first grindstone pressing device 2 includes a base 11, a pressure cylinder 12, and a grindstone holding unit 13.
ベース１１は、主要部分が肉厚の矩形板状の金属で形成され、その幅広の面の一方に、長手方向に伸びる溝である凹溝２１が設けられている。凹溝２１は、建築物におけるあり継ぎのほぞ穴と同一の形状であり、その（長手方向に直交する）断面の形状は、穴底２２を下底とする台形である。凹溝２１は後に説明する押圧装置保持部材１７の凸帯４３とともにアリスライドを形成する。 The base 11 is formed of a thick rectangular plate-shaped metal at a main portion, and a concave groove 21 that is a groove extending in the longitudinal direction is provided on one of the wide surfaces. The concave groove 21 has the same shape as a dovetail mortise in a building, and its cross-sectional shape (perpendicular to the longitudinal direction) is a trapezoid with the hole bottom 22 as the bottom. The concave groove 21 forms an ant slide together with the convex band 43 of the pressing device holding member 17 described later.
ベース１１は、幅広の面に直交して長手方向に拡がる側面の一方に、「ラックとピニオン」におけるラック（歯棒）２３が設けられている。ベース１１は、長手方向に拡がる他方の側面に、移動装置６における駆動シリンダ１４に連結するための連結部２０を備えている。
加圧シリンダ１２は、その軸心をラック２３の長手方向に一致させて、ベース１１における凹溝２１設けられた面に平行な他方の面に固定されている。加圧シリンダ１２は、押し型の単動型エアシリンダ装置である。
Base 11, on one side extending in the longitudinal direction perpendicular to the plane of the width wide, the rack (Habo) 23 is provided in the "rack and pinion". The base 11 includes a connecting portion 20 for connecting to the drive cylinder 14 in the moving device 6 on the other side surface extending in the longitudinal direction.
The pressure cylinder 12 is fixed to the other surface of the base 11 that is parallel to the surface of the base 11 where the concave groove 21 is provided, with the axial center thereof aligned with the longitudinal direction of the rack 23. The pressure cylinder 12 is a push-type single-acting air cylinder device.
砥石保持部１３は、案内部２５および押出部材２６により構成される。
案内部２５は、砥石規制部２７および側板２８からなる。砥石規制部２７は、断面が矩形の溝である砥石溝２９を備えて、「コ」字状の断面形状を有する。砥石溝２９の断面形状は、砥石保持部１３が保持を予定する超仕上げ砥石７の断面の形状に略等しい。
側板２８は、平板状であって、砥石溝２９に超仕上げ砥石７を収めたのちに砥石溝２９の開口全体を覆ってボルト３１，３２により砥石規制部２７と一体化される。
The grindstone holding unit 13 includes a guide unit 25 and an extrusion member 26.
The guide unit 25 includes a grindstone regulating unit 27 and a side plate 28. The grindstone restricting portion 27 includes a grindstone groove 29 having a rectangular cross section, and has a “U” -shaped cross section. The cross-sectional shape of the grindstone groove 29 is substantially equal to the cross-sectional shape of the superfinished grindstone 7 that the grindstone holding unit 13 intends to hold.
The side plate 28 has a flat plate shape, and after the superfinishing grindstone 7 is accommodated in the grindstone groove 29, covers the entire opening of the grindstone groove 29 and is integrated with the grindstone regulating portion 27 by bolts 31 and 32.
押出部材２６は、超仕上げ砥石７の断面形状と略等しい断面形状を有する四角柱状の押圧部３４と、押圧部３４の長手方向の一端部で直交する方向に拡がる受圧部３５からなる。押圧部３４は、受圧部３５とは反対側の端部が、案内部２５における砥石規制部２７の砥石溝２９に挿入されている。
砥石保持部１３は、前述したように、砥石規制部２７および側板２８で形成された角柱状の空隙（砥石溝２９）に、これと略同形の角柱状の超仕上げ砥石７を収容する。
The pushing member 26 includes a quadrangular columnar pressing portion 34 having a cross-sectional shape substantially equal to the cross-sectional shape of the superfinishing grindstone 7 and a pressure receiving portion 35 extending in a direction orthogonal to one end portion in the longitudinal direction of the pressing portion 34. The end of the pressing portion 34 opposite to the pressure receiving portion 35 is inserted into the grindstone groove 29 of the grindstone regulating portion 27 in the guide portion 25.
As described above, the grindstone holding unit 13 accommodates the prismatic superfinishing grindstone 7 having substantially the same shape as the prismatic gap (grindstone groove 29) formed by the grindstone regulating unit 27 and the side plate 28.
超仕上げ砥石７の先端の研削面１６は、角柱の軸に直交する母線を有する湾曲面でなく角柱の軸に対して傾斜した母線を有する湾曲面となっている。
超仕上げ砥石７は、凸側が押しつけられて両端がボルト３７，３８により案内部２５に取り付けられた、湾曲する板ばね３３により、砥石保持部１３からの脱落が防止される。
第１砥石押圧装置２は、流体圧シリンダの１２のロッド３６と押出部材２６の受圧部３５とが常に一体となって移動し、押出部材２６の押圧部３４と超仕上げ砥石７とが常に一体となって移動するように形成されている。
The grinding surface 16 at the tip of the superfinishing grindstone 7 is not a curved surface having a generatrix perpendicular to the axis of the prism, but a curved surface having a generatrix inclined with respect to the axis of the prism.
The superfinishing grindstone 7 is prevented from falling off from the grindstone holding portion 13 by the curved leaf springs 33 whose convex sides are pressed and whose both ends are attached to the guide portion 25 by bolts 37 and 38.
In the first grindstone pressing device 2, the 12 rods 36 of the fluid pressure cylinder and the pressure receiving portion 35 of the pushing member 26 always move together, and the pushing portion 34 of the pushing member 26 and the superfinishing grindstone 7 are always integrated. It is formed to move.
第１砥石押圧装置２において、加圧シリンダ１２および砥石保持部１３は、加圧シリンダ１２のロッド３６の軸心が、押出部材２６における受圧部３５に直交するように配されて、ベース１１と一体化されている。また、第１砥石押圧装置２において、砥石規制部２７の砥石溝２９の中心線と加圧シリンダ１２の伸張方向とが一致する。
第２砥石押圧装置３は、ベース１１Ｂ、加圧シリンダ１２および砥石保持部１３で構成される。第２砥石押圧装置３は、ベース１１Ｂが連結部２０を備えていない点を除き、ベース１１Ｂ、加圧シリンダ１２および砥石保持部１３の構成は、第１砥石押圧装置２におけるベース１１、加圧シリンダ１２および砥石保持部１３の構成と同一である。
In the first grindstone pressing device 2, the pressurizing cylinder 12 and the grindstone holding unit 13 are arranged so that the axis of the rod 36 of the pressurizing cylinder 12 is orthogonal to the pressure receiving unit 35 in the pushing member 26. It is integrated. Further, in the first grindstone pressing device 2, the center line of the grindstone groove 29 of the grindstone restricting portion 27 coincides with the extending direction of the pressure cylinder 12.
The second grindstone pressing device 3 includes a base 11 </ b> B, a pressure cylinder 12, and a grindstone holding unit 13. The second grindstone pressing device 3 has the same structure as the base 11B, the pressurizing cylinder 12 and the grindstone holding unit 13 except that the base 11B does not include the connecting portion 20. The configurations of the cylinder 12 and the grindstone holding unit 13 are the same.
主アーム４および副アーム５は、互いに平行に伸びた平板であり、いずれもオシレーション装置に一体化されている。主アーム４および副アーム５は、伸びた先端側で、それぞれ移動装置６におけるピニオン軸４１の異なる一端を回動可能に保持している。
主アーム４は、副アーム５と対向する表面に、ピニオン軸４１を挟んで１対の押圧装置保持部材１７，１７が固定されている。押圧装置保持部材１７は、（主アーム４の）伸びた方向に略７５度傾斜し突出する帯状に伸びる凸帯４３を備えている。２つの凸帯４３，４３は平行に伸び、いずれもその断面形状が、第１砥石押圧装置２および第２砥石押圧装置３のベース１１，１１Ｂにおける凹溝２１，２１の断面形状と同一（台形）である。
The main arm 4 and the sub arm 5 are flat plates extending in parallel with each other, and both are integrated in the oscillation device. The main arm 4 and the sub-arm 5 each hold one end of the pinion shaft 41 in the moving device 6 so as to be rotatable at the extended tip side.
In the main arm 4, a pair of pressing device holding members 17 and 17 are fixed to a surface facing the sub arm 5 with a pinion shaft 41 interposed therebetween. The pressing device holding member 17 includes a convex band 43 extending in a band shape that is inclined by approximately 75 degrees in the extending direction (of the main arm 4) and protrudes. The two convex bands 43, 43 extend in parallel, and both have the same cross-sectional shape as the cross-sectional shapes of the concave grooves 21, 21 in the bases 11, 11B of the first grindstone pressing device 2 and the second grindstone pressing device 3 (trapezoidal shape). ).
主アーム４は、先端から遠い位置の押圧装置保持部材１７における凸帯４３がベース１１の凹溝２１に摺動自在に嵌め入れられた状態で、第１砥石押圧装置２を保持する。凸帯４３と凹溝２１とは、アリスライドを形成している。また、主アーム４は、ベース１１におけるラック２３が、後に説明するピニオン軸４１のピニオン４２に噛み合わされた状態で、第１砥石押圧装置２を保持する。また、主アーム４は、先端側の押圧装置保持部材１７における凸帯４３がベース１１Ｂの凹溝２１に摺動自在に嵌め入れられ、ベース１１Ｂにおけるラック２３がピニオン４２に噛み合わされてアリスライドとなった状態で、第２砥石押圧装置３を保持する。主アーム４に保持された第１砥石押圧装置２および第２砥石押圧装置３は、それぞれの加圧シリンダ１２，１２における伸張方向が反対側となるよう、一方に対して他方が１８０度回転させて配されている。 The main arm 4 holds the first grindstone pressing device 2 in a state where the convex band 43 in the pressing device holding member 17 at a position far from the tip is slidably fitted in the concave groove 21 of the base 11. The convex band 43 and the concave groove 21 form an ant slide. The main arm 4 holds the first grindstone pressing device 2 in a state where the rack 23 in the base 11 is engaged with a pinion 42 of a pinion shaft 41 described later. Further, the main arm 4 has a convex band 43 in the pressing device holding member 17 on the distal end side slidably fitted in the concave groove 21 of the base 11B, and a rack 23 in the base 11B is meshed with the pinion 42 and In this state, the second grindstone pressing device 3 is held. The first grindstone pressing device 2 and the second grindstone pressing device 3 held by the main arm 4 are rotated 180 degrees with respect to one so that the extending directions of the pressure cylinders 12 and 12 are opposite to each other. Are arranged.
なお、凹溝２１の一部をギブ（凹溝２１と凸帯との隙間をネジで微調整する部材）で形成し、凸帯による凹溝２１内の摺動の精度を高めるのが好ましい。
移動装置６は、ピニオン軸４１および駆動シリンダ１４からなる。
ピニオン軸４１は、一端が主アーム４に、他端が副アーム５に、それぞれ回動自在に保持される。ピニオン軸４１は、主アーム４側にピニオン（小歯車）４２を有する。ピニオン４２は、ラック２３にちょうど噛み合う形状である。
In addition, it is preferable to form a part of the concave groove 21 with a gib (a member that finely adjusts the gap between the concave groove 21 and the convex band with a screw) to improve the accuracy of sliding in the concave groove 21 by the convex band.
The moving device 6 includes a pinion shaft 41 and a drive cylinder 14.
The pinion shaft 41 is rotatably held at one end by the main arm 4 and at the other end by the sub arm 5. The pinion shaft 41 has a pinion (small gear) 42 on the main arm 4 side. The pinion 42 has a shape that meshes with the rack 23.
駆動シリンダ１４は、複動型エアシリンダ装置である。駆動シリンダ１４は、主アーム４における副アーム５に対向する表面に直交して副アーム５側に拡がる基部１５に固定されている。駆動シリンダ１４は、ロッド４４の往復移動（伸縮）方向が、第１砥石押圧装置２および第２砥石押圧装置３の加圧シリンダ１２，１２におけるロッド３６，３６の移動（伸張）方向と一致している。ロッド４４の先端は、ベース１１の連結部２０に固着されている。 The drive cylinder 14 is a double-acting air cylinder device. The drive cylinder 14 is fixed to a base 15 that extends to the side of the sub arm 5 perpendicular to the surface of the main arm 4 facing the sub arm 5. In the drive cylinder 14, the reciprocating (stretching) direction of the rod 44 coincides with the moving (extension) direction of the rods 36 and 36 in the pressure cylinders 12 and 12 of the first grindstone pressing device 2 and the second grindstone pressing device 3. ing. The tip of the rod 44 is fixed to the connecting portion 20 of the base 11.
オシレーション装置は、第１砥石押圧装置２、第２砥石押圧装置３および移動装置６を、これらが固定された主アーム４および副アーム５とともに振動（オシレーション）させる装置である。振動の往復方向は、超仕上げ砥石７の研削面１６の母線が伸びる方向である。
次に、研削装置１の超仕上げ加工における動作について説明する。
The oscillation device is a device that vibrates (oscillates) the first grindstone pressing device 2, the second grindstone pressing device 3, and the moving device 6 together with the main arm 4 and the sub arm 5 to which they are fixed. The reciprocating direction of the vibration is a direction in which the generatrix of the grinding surface 16 of the superfinishing grindstone 7 extends.
Next, the operation | movement in the superfinishing process of the grinding device 1 is demonstrated.
図１を参照して、研削対象物である複列円すいころ軸受における外輪（以下「ワークＷ」という）は、自由回転する１対のサポートローラ４６に乗せられる。また、ワークＷは、軸方向の一端がバッキングプレート４７に当接され、軸方向の他端が自由回転するプレッシャローラ４８によりバッキングプレート４７側に押圧される。
サポートローラ４６に換えて、ワークを、超硬製のシューに乗せて回転させてもよい。
Referring to FIG. 1, an outer ring (hereinafter referred to as “work W”) in a double row tapered roller bearing that is an object to be ground is placed on a pair of support rollers 46 that freely rotate. The workpiece W is pressed against the backing plate 47 by a pressure roller 48 that has one axial end abutted against the backing plate 47 and the other axial end rotating freely.
Instead of the support roller 46, the workpiece may be rotated on a cemented carbide shoe.
研削装置１は、駆動シリンダ１４が収縮した状態で、主アーム４に保持された第１砥石押圧装置２および第２砥石押圧装置３が、ワークＷの内側の所定の位置に差し入れられる。このとき、第１砥石押圧装置２および第２砥石押圧装置３が保持するそれぞれの超仕上げ砥石７，７は、案内部２５，２５から所定の寸法、例えば３ｍｍ外方に飛び出している。 In the grinding device 1, the first grindstone pressing device 2 and the second grindstone pressing device 3 held by the main arm 4 are inserted into a predetermined position inside the workpiece W in a state where the drive cylinder 14 is contracted. At this time, each of the superfinishing grindstones 7 and 7 held by the first grindstone pressing device 2 and the second grindstone pressing device 3 protrudes outward from the guide portions 25 and 25 by a predetermined dimension, for example, 3 mm.
バッキングプレート４７が回転を始め、バッキングプレート４７に押圧されたワークＷが所定回転数で回転する。
続いて、駆動シリンダ１４が所定のシリンダ圧力で伸張動作し（Ｍ１）、ロッド４４に連結された第１砥石押圧装置２をワークＷに近づくように移動させ、第１砥石押圧装置２に保持された超仕上げ砥石７が、ワークＷの軌道面５１ａに押し当てられる。第１砥石押圧装置２は、その移動とともにベース１１のラック２３がピニオン軸４１を回転させる。回転するピニオン軸４１は、そのピニオン４２が、噛み合うベース１１Ｂのラック２３を移動させ、第２砥石押圧装置３をワークＷに近づくように移動させる。移動する第２砥石押圧装置３に保持された超仕上げ砥石７は、ワークＷの軌道面５１ｂに押し当てられる。
The backing plate 47 starts rotating, and the workpiece W pressed by the backing plate 47 rotates at a predetermined rotational speed.
Subsequently, the drive cylinder 14 is extended at a predetermined cylinder pressure (M1), the first grindstone pressing device 2 connected to the rod 44 is moved so as to approach the workpiece W, and is held by the first grindstone pressing device 2. The superfinishing grindstone 7 is pressed against the track surface 51a of the workpiece W. As the first grindstone pressing device 2 moves, the rack 23 of the base 11 rotates the pinion shaft 41. The rotating pinion shaft 41 moves the rack 23 of the base 11B with which the pinion 42 is engaged, and moves the second grindstone pressing device 3 so as to approach the workpiece W. The superfinishing grindstone 7 held by the moving second grindstone pressing device 3 is pressed against the track surface 51b of the workpiece W.
このように、研削装置１では、第１砥石押圧装置２の前進（保持する超仕上げ砥石７における研削面１６側への移動）に同期して、第２砥石押圧装置３が、保持する超仕上げ砥石７の研削面１６側に移動（前進）する。
また、第１砥石押圧装置２および第２砥石押圧装置３は、移動方向から見たときに重ならないように配されており、そのために、それぞれの超仕上げ砥石７，７を、ワークＷの互いに異なる軌道面５１ａ，５１ｂに押し当てることができる。
As described above, in the grinding apparatus 1, the second grinding wheel pressing device 3 holds the superfinishing in synchronization with the advancement of the first grinding wheel pressing device 2 (movement toward the grinding surface 16 side of the superfinishing grinding stone 7 to be held). It moves (advances) to the grinding surface 16 side of the grindstone 7.
Further, the first grindstone pressing device 2 and the second grindstone pressing device 3 are arranged so as not to overlap when viewed from the moving direction. For this reason, the superfinishing grindstones 7 and 7 are connected to each other of the workpiece W. It can be pressed against different track surfaces 51a and 51b.
駆動シリンダ１４による第１砥石押圧装置２の移動、および回転するピニオン４２による第２砥石押圧装置３の移動は、それぞれのベース１１，１１Ｂにおける凹溝２１，２１が、押圧装置保持部材１７，１７の凸帯４３，４３に案内されるアリスライドにより、精度良く行われる。
同時に、それぞれの加圧シリンダ１２，１２のシリンダ室には、同じ空気圧が供給され、超仕上げ砥石７，７の軌道面５１ａ，５１ｂへの押圧力が制御される。
The movement of the first grindstone pressing device 2 by the drive cylinder 14 and the movement of the second grindstone pressing device 3 by the rotating pinion 42 are such that the concave grooves 21, 21 in the respective bases 11, 11 B are the pressing device holding members 17, 17. This is performed with high accuracy by the dovetail guided by the convex bands 43, 43.
At the same time, the same air pressure is supplied to the cylinder chambers of the pressure cylinders 12 and 12, and the pressing force to the raceway surfaces 51a and 51b of the superfinishing grindstones 7 and 7 is controlled.
主アーム４および副アーム５が、軌道面５１ａ，５１ｂの傾斜方向に振動（オシレーション）を始め、超仕上げ加工が開始される。
超仕上げ加工が終了するとも加圧シリンダ１２，１２への空気圧の供給が停止され、駆動シリンダ１４が収縮（後退）動作を行う。
図４は超仕上げ加工後の研削装置１の動作を示す図である。
The main arm 4 and the sub arm 5 start to vibrate (oscillate) in the direction of inclination of the raceway surfaces 51a and 51b, and super finishing is started.
Even after the superfinishing is completed, the supply of air pressure to the pressure cylinders 12 and 12 is stopped, and the drive cylinder 14 performs a contraction (retraction) operation.
FIG. 4 is a diagram showing the operation of the grinding apparatus 1 after superfinishing.
所定の超仕上げ加工時間が経過後、駆動シリンダ１４は収縮動作を行う（Ｍ２）。駆動シリンダ１４の収縮動作に伴い、第１砥石押圧装置２は、超仕上げ砥石７が軌道面５１ａから遠ざかる方向に移動する（Ｍ３）。第１砥石押圧装置２のこの移動により、ベース１１のラック２３がピニオン軸４１を回転させ（Ｍ４）、ピニオン４２が第２砥石押圧装置３を、その超仕上げ砥石７が軌道面５１ｂから遠ざかる方向に移動させる（Ｍ５）。 After a predetermined superfinishing time has elapsed, the drive cylinder 14 performs a contracting operation (M2). As the drive cylinder 14 contracts, the first grindstone pressing device 2 moves in a direction in which the superfinishing grindstone 7 moves away from the raceway surface 51a (M3). By this movement of the first grindstone pressing device 2, the rack 23 of the base 11 rotates the pinion shaft 41 (M4), the pinion 42 moves the second grindstone pressing device 3, and the superfinishing grindstone 7 moves away from the raceway surface 51b. (M5).
研削装置１では、第１砥石押圧装置２の後退に同期して、第２砥石押圧装置２が保持する超仕上げ砥石７が後退する。
また、加圧シリンダ１２，１２は、駆動シリンダ１４の収縮動作の開始と同時にシリンダ室が略大気圧に調節されて密閉される。加圧シリンダ１２，１２は、略大気圧に密閉されることにより、ロッド３６，３６の移動が制限され、超仕上げ砥石７，７の飛び出しの程度が、超仕上げ加工時の状態に維持される。
In the grinding device 1, the superfinishing grindstone 7 held by the second grindstone pressing device 2 moves backward in synchronization with the backward movement of the first grindstone pressing device 2.
Further, the pressurizing cylinders 12 and 12 are sealed by adjusting the cylinder chamber to substantially atmospheric pressure simultaneously with the start of the contraction operation of the drive cylinder 14. The pressure cylinders 12 and 12 are hermetically sealed at approximately atmospheric pressure, so that the movement of the rods 36 and 36 is restricted, and the degree of protrusion of the superfinishing grindstones 7 and 7 is maintained in the state during superfinishing. .
これと同時に、バッキングプレート４７の回転および主アーム４および副アーム５の振動が停止される。
主アーム４および副アーム５は、ワークＷの内側から引き出され、第１砥石押圧装置２および第２砥石押圧装置３がワークＷから抜き出される。
上記一連の作業および研削装置１の動作によって、ワークＷの２つの軌道面５１ａ，５１ｂが同時に超仕上げ加工される。
At the same time, the rotation of the backing plate 47 and the vibration of the main arm 4 and the sub arm 5 are stopped.
The main arm 4 and the sub arm 5 are pulled out from the inside of the workpiece W, and the first grindstone pressing device 2 and the second grindstone pressing device 3 are extracted from the workpiece W.
By the above-described series of operations and the operation of the grinding apparatus 1, the two raceway surfaces 51a and 51b of the workpiece W are simultaneously superfinished.
なお、ワークＷの回転開始および回転停止のタイミング、超仕上げ砥石７，７の振動開始および振動停止のタイミング等の諸条件は、任意に設定可能である。
研削装置１は、複列円すいころ軸受における外輪の２つの軌道面５１ａ，５１ｂを、超仕上げ砥石７，７の押圧力等の条件を略同一として１度に超仕上げ加工することができる。
Various conditions such as the timing for starting and stopping the rotation of the workpiece W and the timing for starting and stopping the vibration of the superfinishing grindstones 7 and 7 can be arbitrarily set.
The grinding apparatus 1 can superfinish the two raceways 51a and 51b of the outer ring in the double row tapered roller bearing at a time under substantially the same conditions such as the pressing force of the superfinishing grindstones 7 and 7.
研削装置１は、複列円すいころ軸受の外輪を１チャッキングで超仕上げ加工することができるので、加工時間の短縮、設備台数の削減およびローラー等による取投工数を削減することができる。
また、研削装置１は、複列円すいころ軸受における外輪の２つの軌道面５１ａ，５１ｂを１チャッキングで超仕上げ加工することにより、個々に超仕上げ加工する場合には実現し難い軌道面５１ａ，５１ｂの軸心を一致させる（同軸度を高くする）ことができる。そのため、研削装置１で超仕上げ加工された軌道面５１ａ，５１ｂを有する複列円すいころ軸受は、芯ブレの発生が抑えられ、摩耗が減少し、長期間の使用に耐えることができる。
Since the grinding device 1 can superfinish the outer ring of the double row tapered roller bearing by one chucking, the processing time can be shortened, the number of facilities can be reduced, and the number of man-hours taken by rollers can be reduced.
Further, the grinding device 1 performs superfinishing on the two raceway surfaces 51a and 51b of the outer ring in the double row tapered roller bearing by one chucking, thereby making it difficult to realize the raceway surface 51a, The axial center of 51b can be made to correspond (a coaxial degree is made high). Therefore, the double-row tapered roller bearing having the raceway surfaces 51a and 51b superfinished by the grinding apparatus 1 can suppress the occurrence of core blurring, reduce wear, and can withstand long-term use.
上述の実施形態において、移動装置６は第１砥石押圧装置２を移動させ、第２砥石押圧装置３は第１砥石押圧装置２の移動によって移動する。これを、例えば、移動装置６が直接にピニオン軸４１を回転させ、ピニオン軸４１の回転が第１砥石押圧装置２および第２砥石押圧装置３を移動させるように構成してもよい。
また、ベース１１，１１Ｂに凸帯４３，４３を設け、押圧装置保持部材１７，１７に凹溝２１，２１を設けて、第１砥石押圧装置２および第２砥石押圧装置３の凸帯４３，４３が凹溝２１，２１に案内されるように構成してもよい。第１砥石押圧装置２が凹溝２１を備え、第２砥石押圧装置３が凸帯４３を備える、変則的な形態でもよい。
In the above-described embodiment, the moving device 6 moves the first grindstone pressing device 2, and the second grindstone pressing device 3 moves by the movement of the first grindstone pressing device 2. For example, the moving device 6 may directly rotate the pinion shaft 41 and the rotation of the pinion shaft 41 may move the first grindstone pressing device 2 and the second grindstone pressing device 3.
The bases 11 and 11B are provided with convex bands 43 and 43, and the pressing device holding members 17 and 17 are provided with concave grooves 21 and 21, so that the convex bands 43 of the first grindstone pressing device 2 and the second grindstone pressing device 3 are provided. You may comprise so that 43 may be guided to the concave grooves 21 and 21. FIG. An irregular form in which the first grindstone pressing device 2 includes the concave grooves 21 and the second grindstone pressing device 3 includes the convex band 43 may be employed.
凹溝２１および凸帯４３は、その断面形状が台形以外の形状のスライド機構とすることができる。スライド機構は、２本の円柱とこの円柱を貫通させるスライダで形成してもよい。
また、スライド機構を、主アーム４側に加え副アーム５と第１砥石押圧装置２および第２砥石押圧装置３との間に設けてもよい。
The concave groove 21 and the convex band 43 can be a slide mechanism having a cross-sectional shape other than a trapezoid. The slide mechanism may be formed by two cylinders and a slider that passes through the cylinders.
In addition to the main arm 4 side, a slide mechanism may be provided between the sub arm 5 and the first grindstone pressing device 2 and the second grindstone pressing device 3.
その他、研削装置１、および研削装置１の各構成または全体の構造、形状、寸法、個数、材質などは、本発明の趣旨に沿って適宜変更することができる。 In addition, each structure of the grinding apparatus 1 and the grinding apparatus 1 or the overall structure, shape, dimensions, number, material, and the like can be appropriately changed in accordance with the spirit of the present invention.
本発明は、複列円すいころ軸受における外輪の軌道面の超仕上げを行う研削装置に利用することができる。 INDUSTRIAL APPLICABILITY The present invention can be used for a grinding apparatus that performs super finishing of the raceway surface of the outer ring in a double row tapered roller bearing.
１ 研削装置
２ 第１の砥石保持装置（第１砥石押圧装置）
３ 第２の砥石保持装置（第２砥石押圧装置）
４ アーム（主アーム）
６ 移動装置
７ 超仕上げ砥石
１２ エアシリンダ（加圧シリンダ）
１４ 流体圧シリンダ装置（駆動シリンダ）
１６ （超仕上げ砥石の）研削面
２３ ラック
４２ ピニオン
DESCRIPTION OF SYMBOLS 1 Grinding device 2 1st grindstone holding device (1st grindstone pressing device)
3 Second whetstone holding device (second whetstone pressing device)
4 Arm (main arm)
6 Moving device 7 Superfinishing wheel 12 Air cylinder (Pressurizing cylinder)
14 Fluid pressure cylinder device (drive cylinder)
16 Grinding surface (of super-finished grinding wheel) 23 Rack 42 Pinion
Claims (2)
保持される超仕上げ砥石の研削面が向く側に対して前記第１の砥石保持装置を前進および後退させ、かつ前記第２の砥石保持装置を、前記第１の砥石保持装置の前進または後退に同期させて保持される超仕上げ砥石の研削面が向く側に対して後退および前進させる移動装置と、を有し、
前記第１の砥石保持装置および前記第２の砥石保持装置は、
保持する前記超仕上げ砥石をその研削面が向く側に押し出すためのエアシリンダを有し、
それぞれの前進方向が１８０度逆方向であって互いに遠ざかる方向であり、
移動方向から見たときに、それぞれの前進後退が重なることなく隣り合う位置で行われるように配され、
前記第１の砥石保持装置および前記第２の砥石保持装置が一体に振動するように形成された
ことを特徴とする研削装置。 Both the first grindstone holding device and the second grindstone holding device for holding the superfinishing grindstone,
The first grindstone holding device is moved forward and backward with respect to the side of the superfinished grindstone to be held facing, and the second grindstone holding device is moved forward and backward with respect to the first grindstone holding device. A moving device that moves backward and forward with respect to the side of the grinding surface of the superfinishing wheel that is held in synchronization,
The first grindstone holding device and the second grindstone holding device are:
An air cylinder for extruding the superfinishing grindstone to be held to the side facing the grinding surface;
Each forward direction is 180 degrees opposite and away from each other,
When viewed from the direction of movement, each forward and backward is arranged so that they do not overlap and are performed at adjacent positions,
The grinding device, wherein the first grindstone holding device and the second grindstone holding device are formed so as to vibrate integrally.
前記第１の砥石保持装置と前記第２の砥石保持装置との間に配されてこれらの移動方向に直交する方向に軸心を有するピニオンと、
前記第１の砥石保持装置および前記第２の砥石保持装置にそれぞれ設けられて前記ピニオンと噛み合わされたラックと、
前記第１の砥石保持装置を前進および後退させる流体圧シリンダ装置と、を有する
請求項１に記載の研削装置。 Before Symbol mobile devices,
A pinion disposed between the first grindstone holding device and the second grindstone holding device and having an axis in a direction perpendicular to the moving direction;
A rack provided in each of the first grindstone holding device and the second grindstone holding device and meshed with the pinion;
The grinding apparatus according to claim 1, further comprising a fluid pressure cylinder device that moves the first grindstone holding device forward and backward.
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| JP4078523B2 (en) * | 2001-02-27 | 2008-04-23 | 日本精工株式会社 | Super finishing method and apparatus for tapered roller bearing |
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