JP2000334665A - Grinding wheel - Google Patents
Grinding wheelInfo
- Publication number
- JP2000334665A JP2000334665A JP11144973A JP14497399A JP2000334665A JP 2000334665 A JP2000334665 A JP 2000334665A JP 11144973 A JP11144973 A JP 11144973A JP 14497399 A JP14497399 A JP 14497399A JP 2000334665 A JP2000334665 A JP 2000334665A
- Authority
- JP
- Japan
- Prior art keywords
- grinding wheel
- guide
- work
- grinding
- face
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Polishing Bodies And Polishing Tools (AREA)
Abstract
Description
【0001】[0001]
【発明の属する技術分野】本発明は、砥石車に関する。
例えば、凹曲面形状の研磨面を端面に有し、円錐ころ軸
受用円錐ころの端面研磨に用いる砥石車に関する。[0001] The present invention relates to a grinding wheel.
For example, the present invention relates to a grinding wheel having a concave-polished polishing surface on an end surface and used for polishing the end surface of a tapered roller for a tapered roller bearing.
【0002】[0002]
【従来の技術】上述の砥石車は、円筒形状に形成され、
その端面に研磨面を有する。この研磨面は所定の凹曲面
形状に形成され、円錐ころの大端面の形状、例えば、凸
曲面形状に対応した形状とされている。研磨面には、円
錐ころの円錐台形状に形成されたワークの大端面が押し
つけられて、研磨される。このとき、砥石車は回転し、
これとともに、ワークは研磨面に沿いつつ、図4に示す
ような送り軌道90を通って送られる。この送り軌道9
0は、図4の紙面垂直方向に湾曲した円弧状をなし、こ
の送り軌道90には、砥石車91の研磨面にワークを導
入し、また研磨面からワークを導出するための一対のワ
ークガイド92が設けられている。送り軌道90は、一
方のワークガイド92から研磨面の外周部へ入り、この
外周部から内周部を経て外周部へと研磨面を横断し、他
方のワークガイド92へと至っている。送り軌道90内
でワークは研磨面および各ワークガイド92に押しつけ
られている。各ワークガイドと研磨面との間でワークを
スムーズに乗り移らせるためには、各ワークガイドを回
転する砥石車91の周面にできるだけ接近した位置に、
高精度に位置決めして固定するのが好ましい。2. Description of the Related Art The above-mentioned grinding wheel is formed in a cylindrical shape,
The end surface has a polished surface. This polished surface is formed in a predetermined concave curved surface shape, and has a shape corresponding to the shape of the large end surface of the tapered roller, for example, a convex curved surface shape. The large end face of the work formed in the shape of a truncated cone of a tapered roller is pressed against the polishing surface and polished. At this time, the grinding wheel rotates,
At the same time, the work is sent along a feed track 90 as shown in FIG. This feed track 9
Reference numeral 0 denotes an arc shape curved in the direction perpendicular to the paper surface of FIG. 4, and the feed track 90 has a pair of work guides for introducing a work to a polishing surface of a grinding wheel 91 and for leading the work from the polishing surface. 92 are provided. The feed track 90 enters the outer peripheral portion of the polishing surface from one work guide 92, crosses the polishing surface from the outer peripheral portion to the outer peripheral portion through the inner peripheral portion, and reaches the other work guide 92. The work is pressed against the polishing surface and each work guide 92 in the feed track 90. In order to smoothly transfer the work between each work guide and the polishing surface, each work guide should be positioned as close as possible to the peripheral surface of the grinding wheel 91 which rotates.
It is preferable to position and fix it with high precision.
【0003】[0003]
【発明が解決しようとする課題】しかしながら、ワーク
ガイドをそのように高精度に位置決めして固定するのは
困難であり、仮に、位置決め精度が悪い場合には、ワー
クがワークガイドと研磨面の外周との境界部分でがたつ
き、研磨面に欠けを生じることがある。このため、砥石
車の寿命が短くなっていた。However, it is difficult to position and fix the work guide with such high precision, and if the positioning precision is poor, the work may be placed on the outer periphery of the work guide and the polishing surface. In some cases, the polished surface may be chipped at the boundary portion between the polished surface and the polished surface. For this reason, the life of the grinding wheel has been shortened.
【0004】また、研磨面の内周縁部が残りの部分より
も摩耗し易いことから、研磨面の形状精度を維持するた
めには、最も摩耗の進行が早い内周縁部に合わせて残り
の部分をドレスにより削ることになる結果、砥石車の寿
命が短くなっていた。研磨面の内周縁部が摩耗し易いの
は、ワークに対する切込み量が、上述の欠けを防止する
ために研磨面の外周縁部で少なくされるのに対して、研
磨面の内周縁部(図4のワークW7のある位置)で相対
的に大きくされる傾向にあるからである。Further, since the inner peripheral edge of the polished surface is more likely to be worn than the remaining portion, in order to maintain the shape accuracy of the polished surface, the remaining portion is adjusted in accordance with the inner peripheral edge where wear progresses fastest. As a result, the life of the grinding wheel was shortened. The inner peripheral edge of the polished surface is easily worn out because the cut amount for the work is reduced at the outer peripheral edge of the polished surface to prevent the above-described chipping, whereas the inner peripheral edge of the polished surface (FIG. This is because it tends to be relatively large at the position of the work W7 of No. 4).
【0005】また、研磨面の内周縁部では、研磨面から
ワークにかかる力(以下「研磨力」という。)が、ワー
クの倒れを助長する方向(送り軌道の接線方向)に沿っ
て強く働く。これにより、ワークが正規の状態から傾斜
すると、研磨面の内周縁部を強く押圧し、多大な摩耗を
生じさせる。そこで、本発明の目的は、上述の技術的課
題を解決し、寿命を長くできる砥石車を提供することで
ある。Further, at the inner peripheral edge of the polishing surface, a force applied to the work from the polishing surface (hereinafter referred to as "polishing force") acts strongly in a direction that promotes the falling of the work (tangential direction of the feed track). . As a result, when the work is inclined from the normal state, the inner peripheral edge of the polishing surface is strongly pressed, causing a great amount of wear. Therefore, an object of the present invention is to solve the above-mentioned technical problems and to provide a grinding wheel capable of extending the life.
【0006】[0006]
【課題を解決するための手段】この目的を達成するた
め、請求項1に記載の砥石車は、円筒状の砥石車本体
と、この砥石車本体の内周面に固定され、且つ研磨材を
含まない円筒状の内ガイドとを備え、砥石車本体の一端
面に凹曲面をなす研磨面が形成され、内ガイドの端面
は、研磨面の凹曲面に連続する凹曲面をなし、ワークの
被研磨面の少なくとも一部を案内することを特徴とす
る。In order to achieve this object, a grinding wheel according to claim 1 is fixed to a cylindrical grinding wheel main body, an inner peripheral surface of the grinding wheel main body, and an abrasive material. And a cylindrical inner guide that does not include a grinding wheel, a grinding surface that forms a concave curved surface is formed on one end surface of the grinding wheel main body, and the end surface of the inner guide forms a concave curved surface that is continuous with the concave curved surface of the grinding surface. It is characterized in that at least a part of the polishing surface is guided.
【0007】この構成によれば、砥石車の内周部を研磨
材を含まない内ガイドで構成したので、砥石車の端面の
内周部で研磨力が働かない結果、ワークの倒れを防止で
き、倒れに起因する摩耗の増大を防止することができ
る。また、内ガイドは研磨面に連続する凹曲面でワーク
の被研磨面を受け止めるので、研磨面と内ガイドの端面
との境界部分をワークがスムーズに移行でき、この点か
らもワークの倒れを防止できる。According to this configuration, since the inner peripheral portion of the grinding wheel is constituted by the inner guide containing no abrasive, the grinding force does not act on the inner peripheral portion of the end surface of the grinding wheel, so that the work can be prevented from falling down. In addition, it is possible to prevent an increase in wear caused by the fall. In addition, the inner guide receives the surface to be polished of the work with a concave curved surface that is continuous with the polishing surface, so that the work can smoothly transition at the boundary between the polishing surface and the end surface of the inner guide, and also prevent the work from falling down from this point it can.
【0008】請求項2に記載の砥石車は、請求項1に記
載の砥石車において、上記内ガイドは、樹脂系材料を主
成分とし、砥石車本体と近似する硬度を有することを特
徴とする。この構成によれば、内ガイドおよび砥石車本
体の端面が確実に均一に摩耗するので、砥石車の端面を
ドレスする際に、単一のドレス刃にて砥石車の端面全体
を均一にドレスすればよく、作業し易い。[0008] A grinding wheel according to a second aspect of the present invention is the grinding wheel according to the first aspect, wherein the inner guide is mainly composed of a resin-based material and has a hardness similar to that of the grinding wheel main body. . According to this configuration, since the inner guide and the end face of the grinding wheel body are surely and uniformly worn, when dressing the end face of the grinding wheel, the entire end face of the grinding wheel can be uniformly dressed with a single dressing blade. Easy to work with.
【0009】ここで、樹脂系材料を主成分とするとは、
内ガイドが樹脂系材料のみで構成される場合をも含む趣
旨である。樹脂系材料としては、樹脂を含む材料であれ
ばよく、例えば、樹脂材料単体でもよいし、あるいは樹
脂材料と研磨力のない無機質または有機質のフィラーと
が配合されたものでもよい。また、内ガイドの材質とし
ては、エポキシ系樹脂単体、またはエポキシ系樹脂とク
リオライトとの配合物を例示できるが、その限りではな
い。[0009] Here, the main component of the resin material is:
This is intended to include a case where the inner guide is formed only of a resin-based material. The resin-based material may be any material containing a resin. For example, the resin-based material may be a single resin material, or may be a resin material and an inorganic or organic filler having no abrasive power. In addition, examples of the material of the inner guide include, but are not limited to, an epoxy-based resin alone or a mixture of an epoxy-based resin and cryolite.
【0010】また、内ガイドの硬度は、ロックウェル硬
度計Lスケールにおいて、砥石車本体の硬度に対し、±
20以内の硬度を要求される。なお、砥石車本体の硬度
は、ワークの種類および要求される研磨後の品質に応じ
てロックウェル硬度計Lスケール50〜120の範囲内
で変更されるものであり、その際には、変更された砥石
車本体の硬度に対して±20以内の範囲内に内ガイドの
硬度を調整する必要がある。[0010] The hardness of the inner guide is, on the Rockwell hardness scale L scale, ± of the hardness of the grinding wheel body.
Hardness within 20 is required. The hardness of the grinding wheel main body is changed within the range of Rockwell hardness meter L scale 50 to 120 in accordance with the type of work and the required quality after polishing. It is necessary to adjust the hardness of the inner guide to within ± 20 with respect to the hardness of the grinding wheel body.
【0011】請求項3に記載の砥石車は、円筒状の砥石
車本体と、この砥石車本体の外周面に固定され、且つ研
磨材を含まない円筒状の外ガイドとを備え、砥石車本体
の一端面に凹曲面をなす研磨面が形成され、外ガイドの
端面は、研磨面の凹曲面に連続する凹曲面をなし、ワー
クの被研磨面を研磨面へ案内することを特徴とするもの
である。According to a third aspect of the present invention, there is provided a grinding wheel including a cylindrical grinding wheel main body, and a cylindrical outer guide fixed to an outer peripheral surface of the grinding wheel main body and containing no abrasive. A polishing surface forming a concave curved surface is formed on one end surface of the outer guide, and the end surface of the outer guide forms a concave curved surface continuous with the concave curved surface of the polishing surface, and guides the polished surface of the work to the polishing surface. It is.
【0012】この構成によれば、ワークを、砥石車の外
周に接近した位置から研磨面に移行させるときに、研磨
力を働かせない外ガイドの端面を経由して研磨面に移行
するので、スムーズに移行することができる。ワークが
研磨面から上述の位置に移行するときも同様である。こ
のように、移行時のワークががたつかないので、砥石車
の外周部に欠けが生じることがない。According to this configuration, when the work is transferred from the position close to the outer periphery of the grinding wheel to the polishing surface, the work is transferred to the polishing surface via the end surface of the outer guide that does not exert a polishing force. Can be migrated to. The same applies when the work moves from the polished surface to the above-described position. As described above, since the work at the time of transition does not rattle, chipping does not occur on the outer peripheral portion of the grinding wheel.
【0013】請求項4に記載の砥石車は、請求項3に記
載の砥石車において、上記外ガイドは、樹脂系材料を主
成分とし、砥石車本体と近似する硬度を有することを特
徴とする。この構成によれば、外ガイドおよび砥石車本
体の端面が確実に均一に摩耗するので、砥石車の端面を
ドレスする際に、単一のドレス刃にて砥石車の端面全体
を均一にドレスすればよく、作業し易い。A grinding wheel according to a fourth aspect of the present invention is the grinding wheel according to the third aspect, wherein the outer guide is mainly composed of a resin material and has a hardness similar to that of the grinding wheel main body. . According to this configuration, since the outer guide and the end face of the grinding wheel main body are surely and uniformly worn, when dressing the end face of the grinding wheel, the entire end face of the grinding wheel can be uniformly dressed with a single dressing blade. Easy to work with.
【0014】ここで、外ガイドの材質および硬度には、
請求項2の作用で説明した内ガイドの材質および硬度を
利用することができる。Here, the material and hardness of the outer guide include:
The material and hardness of the inner guide described in the operation of claim 2 can be used.
【0015】[0015]
【発明の実施の形態】以下、本発明の実施の形態の砥石
車を、添付図面を参照しつつ説明する。図1は、本発明
の一実施形態の砥石車の断面図である。砥石車2は、円
筒状をなし、その一端面2aは、中心軸線2bの回りに
回転対称な形状の凹曲面に形成されている。また、砥石
車2の他端面は平面状に形成され、ここに、砥石車2を
中心軸線2bの回りに回転駆動するための円板形状の取
付部材3が固定されている。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a grinding wheel according to an embodiment of the present invention will be described with reference to the accompanying drawings. FIG. 1 is a sectional view of a grinding wheel according to an embodiment of the present invention. The grinding wheel 2 has a cylindrical shape, and one end surface 2a is formed as a concave curved surface that is rotationally symmetric about the central axis 2b. Further, the other end surface of the grinding wheel 2 is formed in a flat shape, and a disk-shaped mounting member 3 for driving the grinding wheel 2 to rotate around the center axis 2b is fixed thereto.
【0016】砥石車2は、研磨材を含む円筒状の砥石車
本体21と、この砥石車本体21の内周面21bに固定
され、且つ研磨材を含まない円筒状の内ガイド22と、
砥石車本体21の外周面21cに固定され、且つ研磨材
を含まない円筒状の外ガイド23とを備えている。砥石
車2の端面2aは、内ガイド22の端面22aと、砥石
車本体21の研磨面21aと、外ガイド23の端面23
aとを、径方向の内方から外方に向けて並べて構成され
ている。各面21a,22a,23aは、凹曲面に形成
され、各凹曲面は互いに隣接する凹曲面に連続し、全体
として一つの大きな凹曲面を構成している。The grinding wheel 2 includes a cylindrical grinding wheel main body 21 containing an abrasive, a cylindrical inner guide 22 fixed to the inner peripheral surface 21b of the grinding wheel main body 21 and containing no abrasive.
A cylindrical outer guide 23 fixed to the outer peripheral surface 21c of the grinding wheel main body 21 and containing no abrasive is provided. The end surface 2a of the grinding wheel 2 includes an end surface 22a of the inner guide 22, a polishing surface 21a of the grinding wheel main body 21, and an end surface 23 of the outer guide 23.
a are arranged from the inside in the radial direction to the outside. Each of the surfaces 21a, 22a, and 23a is formed as a concave curved surface, and each concave curved surface is continuous with a concave curved surface adjacent to each other and forms one large concave curved surface as a whole.
【0017】凹曲面は、例えば、球面からなり、この球
面の中心は、砥石車2の中心軸線2b上に配置されてい
る。凹曲面は、ワークである円錐ころの大端面の凸曲面
形状に対応した形状とされている。砥石車本体21は、
研磨材としての砥粒と、この砥粒を保持する結合剤とを
含んでいる。研磨材は、例えば、アルミナ質系砥粒であ
り、結合剤は、熱硬化性樹脂やガラス質系の材質等を利
用することができる。The concave curved surface is, for example, a spherical surface, and the center of the spherical surface is arranged on the center axis 2 b of the grinding wheel 2. The concave curved surface has a shape corresponding to the convex curved shape of the large end surface of the tapered roller as the work. The grinding wheel body 21
It contains abrasive grains as an abrasive and a binder holding the abrasive grains. The abrasive is, for example, alumina-based abrasive grains, and the binder may be a thermosetting resin, a vitreous material, or the like.
【0018】内ガイド22および外ガイド23は、それ
ぞれ同じ樹脂材料からなる。この樹脂材料は、エポキシ
樹脂を主成分とするものであり、砥石車本体21と近似
するロックウェル硬度を有し、同じ程度の耐摩耗性をも
つものとされる。例えば、単一のドレス刃を砥石車2の
端面全体に均一に沿わせてドレスする際に、砥石車本体
21と内ガイド22と外ガイド23とが均一に摩耗して
ドレスされた面に段差が生じないようにされており、ま
た、研磨加工するに際して、砥石車2の端面2aに沿っ
てワークが送られるときに、砥石車本体21と内ガイド
22と外ガイド23とが均一に摩耗して各面21a,2
2a,23aの境界に段差が生じないようにされてい
る。The inner guide 22 and the outer guide 23 are made of the same resin material. This resin material is mainly composed of an epoxy resin, has a Rockwell hardness similar to that of the grinding wheel main body 21, and has the same degree of wear resistance. For example, when dressing a single dressing blade uniformly along the entire end surface of the grinding wheel 2, the grinding wheel main body 21, the inner guide 22, and the outer guide 23 are uniformly worn and a step is formed on the dressed surface. When the workpiece is fed along the end surface 2a of the grinding wheel 2, the grinding wheel main body 21, the inner guide 22, and the outer guide 23 are uniformly worn during polishing. Each side 21a, 2
No step is formed at the boundary between 2a and 23a.
【0019】次に、本砥石車2を利用する研磨装置1
を、図2の概略構成を示す模式図を参照して説明する。
研磨装置1は、円錐ころ軸受用の円錐ころの大端面を球
面からなる凸曲面に研磨加工するためのものであり、略
円錐台形状のワークを加工する。研磨装置1は、中心軸
線2bの回りに第1駆動手段11により回転駆動される
上述の砥石車2と、中心軸線2bに交差する回転軸線1
2aの回りに第2駆動手段12により回転駆動されて複
数のワークWを保持する保持体13とを有している。Next, a polishing apparatus 1 using the main grinding wheel 2
Will be described with reference to a schematic diagram showing a schematic configuration of FIG.
The polishing device 1 is for polishing a large end surface of a tapered roller for a tapered roller bearing into a convex curved surface having a spherical surface, and processes a substantially frustoconical work. The polishing apparatus 1 includes the above-described grinding wheel 2 that is rotationally driven by a first driving unit 11 around a center axis 2b, and a rotation axis 1 that intersects the center axis 2b.
And a holder 13 that holds the plurality of works W by being rotationally driven by the second drive means 12 around the portion 2a.
【0020】保持体13は、回転軸線12aを中心とし
て回転する一対の円板14,15を含んでいる。これら
円板14,15は、円板形状の主体部14d,15d
と、これら主体部14d,15dの中心部から回転軸線
12aに沿って延びて第2駆動手段12と駆動連結され
る軸部14a,15aと、主体部14d,15dの外周
縁にあって互いに接近するように逆向きに張り出す環状
張出部14b,15bとをそれぞれ有している。環状張
出部14b,15bの相対向する端面は、保持面14
c,15cを構成しており、保持面14c,15c同士
の間に円錐ころからなるワークWを複数挟んで保持する
ようにしている。保持面14c,15cは、互いに逆向
きに傾斜する円錐テーパ面からなり、ワークWの円錐面
からなる周面と接する。The holder 13 includes a pair of disks 14 and 15 that rotate about the rotation axis 12a. These disks 14 and 15 are disc-shaped main parts 14d and 15d.
And shaft portions 14a, 15a extending along the rotation axis 12a from the central portions of the main portions 14d, 15d and drivingly connected to the second driving means 12, and being close to each other at the outer peripheral edges of the main portions 14d, 15d. And the annular projections 14b, 15b projecting in opposite directions. Opposite end faces of the annular protrusions 14b and 15b are
c, 15c, and a plurality of works W made of tapered rollers are held between the holding surfaces 14c, 15c. The holding surfaces 14c and 15c are formed of conical tapered surfaces that are inclined in opposite directions to each other, and come into contact with the peripheral surface of the work W that is formed of a conical surface.
【0021】保持面14c,15c間に保持された複数
のワークWの中心軸線WCは、回転軸線12aに直交す
る平面A内において、この平面Aと回転軸線12aとの
交点Pを中心とする放射状に並べられている。また、複
数のワークWは、例えば、その中心孔を貫通する軸から
なる保持器16によって、上述の交点Pを中心とする平
面A内の円弧上において、周方向の間隔を規制され、例
えば、円周等配に保持されている。また、ワークWの大
端面は円板14,15の径方向外方に向けられ、予め定
められた径方向位置に配置されている。この径方向位置
を通り交点Pを中心として平面Aに含まれる円が、砥石
車2の端面2aにほぼ沿って、特に、端面22aの内周
縁部を通るようにされ、また、砥石車2の中心軸線2b
は交点Pと交わるようになっている。The center axis WC of the plurality of works W held between the holding surfaces 14c, 15c is radially centered on an intersection P between the plane A and the rotation axis 12a in a plane A orthogonal to the rotation axis 12a. It is arranged in. In addition, the plurality of workpieces W are, for example, regulated in a circumferential interval on an arc in the plane A centered on the intersection P by the retainer 16 having an axis passing through the center hole thereof. It is held evenly around the circumference. The large end surface of the work W is directed radially outward of the disks 14 and 15 and is arranged at a predetermined radial position. A circle passing through the radial position and included in the plane A with the intersection P as the center is made to pass substantially along the end surface 2a of the grinding wheel 2, in particular, through the inner peripheral edge of the end surface 22 a. Center axis 2b
Intersects the intersection P.
【0022】第2の駆動手段12は一対で設けられ、一
対の円板14,15をそれぞれ駆動する。一対の円板1
4,15は、複数のワークWをこのワークWの中心軸線
WCの回りに自転自在に保持し、相対回転することによ
り生じる保持面14c,15c間の周速差により、複数
のワークWを自転させるようにしている。また、上述の
周速差は、回転軸線12aの回りにワークWを公転させ
るように設定されている。The second driving means 12 is provided as a pair and drives the pair of disks 14 and 15 respectively. A pair of disks 1
The workpieces 4 and 15 hold the plurality of works W in a freely rotatable manner around the center axis WC of the work W, and rotate the plurality of works W by the peripheral speed difference between the holding surfaces 14c and 15c caused by the relative rotation. I try to make it. Further, the above-described peripheral speed difference is set so that the work W revolves around the rotation axis 12a.
【0023】各ワークWは、ワークの公転軌道からなる
円形の送り軌道18を送られる。ワークは、図3に示す
ように、送り軌道18(図3では紙面垂直方向に湾曲し
ている。)の一部の領域で、ワークの大端面を研磨する
ために砥石車2の端面2aに沿って送られ、送り軌道1
8の残りの領域では、ワークガイド17により案内され
る。ワークガイド17は、環状の一部を切り欠かれた形
状であり、その内周面を保持体13の外周部に接近して
配置され、内周面にワークWの大端面を沿わせている。Each work W is sent on a circular feed trajectory 18 consisting of the orbit of the work. As shown in FIG. 3, the work is applied to the end surface 2 a of the grinding wheel 2 in order to polish a large end surface of the work in a part of a feed track 18 (in FIG. 3, curved in a direction perpendicular to the paper surface). Sent along the track 1
The remaining area 8 is guided by the work guide 17. The work guide 17 has an annular shape in which a part of the work W is cut away, and its inner peripheral surface is arranged close to the outer peripheral portion of the holding body 13, and the large end surface of the work W extends along the inner peripheral surface. .
【0024】また、一対の円板14,15は、互いに接
近するように付勢手段19により付勢され、保持面14
c,15cのテーパ面により、ワークの大端面を砥石車
2の端面2aおよびワークガイド17に押し付けてい
る。この研磨装置1では、砥石車2を回転させると、砥
石車本体21と内ガイド22と外ガイド23とは一体に
回転する。ワークは、自転しつつ送り軌道18を送られ
る。その間に、砥石車2の端面2aにワークを押しつ
け、研磨面21aによりワークに凸曲面形状を形成する
ことができる。The pair of disks 14 and 15 are urged by urging means 19 to approach each other, and
The large end surface of the work is pressed against the end surface 2a of the grinding wheel 2 and the work guide 17 by the tapered surfaces c and 15c. In the polishing apparatus 1, when the grinding wheel 2 is rotated, the grinding wheel main body 21, the inner guide 22, and the outer guide 23 rotate integrally. The work is sent on the feed track 18 while rotating. In the meantime, the work can be pressed against the end face 2a of the grinding wheel 2 and a convex curved surface shape can be formed on the work by the polishing surface 21a.
【0025】詳細に説明する。ワークは、ワークガイド
17の一部分17aから外ガイド23の端面23aの外
周部に入り、外ガイド23の端面23aは、ワークの被
研磨面を、ワークガイド17から内周部となる研磨面2
1aへ案内する。この間、ワークは内ガイド23の端面
23aで支持されるが、研磨されない。ワークは、砥石
車本体21の研磨面21aにより研磨される。This will be described in detail. The work enters the outer peripheral portion of the end surface 23a of the outer guide 23 from a part 17a of the work guide 17, and the end surface 23a of the outer guide 23 changes the surface to be polished of the work from the work guide 17 to the inner peripheral portion.
Guide to 1a. During this time, the work is supported by the end surface 23a of the inner guide 23, but is not polished. The work is polished by the polishing surface 21a of the grinding wheel main body 21.
【0026】そして、内ガイド22の端面22aが、ワ
ークの被研磨面を、研磨面21aの一位置(ワークW2
のある位置)から砥石車2の端面2aの内周縁部を経て
上述の一位置と周方向に離れた研磨面21aの他位置
(ワークW4のある位置)へ案内する。この間、ワーク
は内ガイド22の端面22aで支持されるが、研磨され
ない。内ガイド22の端面22aの内周縁部では、ワー
クW3の径方向の外側部分だけが、内ガイド22の端面
22aで支持されている。なお、内ガイド22は、内周
縁部でワークの全体を支持してもよく、ワークの少なく
とも一部を支持すればよい。Then, the end surface 22a of the inner guide 22 moves the polished surface of the work to one position (work W2) of the polished surface 21a.
(The position where the workpiece W4 is located), and is guided through the inner peripheral edge of the end face 2a of the grinding wheel 2 to another location (the location where the workpiece W4 is located) that is circumferentially separated from the above-described one position. During this time, the work is supported by the end face 22a of the inner guide 22, but is not polished. At the inner peripheral edge of the end face 22a of the inner guide 22, only the radially outer portion of the work W3 is supported by the end face 22a of the inner guide 22. The inner guide 22 may support the entire work at the inner peripheral edge portion, or may support at least a part of the work.
【0027】その後、ワークは研磨面21aによりさら
に研磨される。次に、外ガイド23の端面23aが、ワ
ークの被研磨面を研磨面21aの外周縁部からワークガ
イド17の他部分17bへと案内する。ワークは、砥石
車2の端面2aの外周部を経てワークガイド17に出て
いく。このように本実施の形態によれば、砥石車2の内
周部を研磨材を含まない内ガイド22で構成したので、
砥石車2の端面2aの内周部で研磨力が働かない結果、
内周部での研磨力によるワークの倒れを防止でき、倒れ
に起因する摩耗の増大を防止することができる。Thereafter, the work is further polished by the polishing surface 21a. Next, the end surface 23a of the outer guide 23 guides the polished surface of the work from the outer peripheral edge of the polished surface 21a to the other portion 17b of the work guide 17. The work exits the work guide 17 via the outer peripheral portion of the end face 2a of the grinding wheel 2. As described above, according to the present embodiment, since the inner peripheral portion of the grinding wheel 2 is configured by the inner guide 22 containing no abrasive,
As a result that the polishing force does not work on the inner peripheral portion of the end face 2a of the grinding wheel 2,
It is possible to prevent the work from falling down due to the polishing force at the inner peripheral portion, and to prevent an increase in wear caused by the falling down.
【0028】また、内ガイド22の端面22aは、研磨
面21aと連続する凹曲面でワークの被研磨面を受け止
めるので、研磨面21aと内ガイド22の端面22aと
の境界部分をワークがスムーズに移行でき、この点から
もワークの倒れを防止できる。また、ワークの切込み量
が内周寄り程に大きくされる場合に、砥石車2の端面2
aの摩耗が内周寄りで相対的に大きくなるとしても、内
ガイド22の端面22aは研磨作用を有しないので、ワ
ークの加工精度を低下させる虞がない。The end surface 22a of the inner guide 22 receives the surface to be polished of the work by a concave curved surface continuous with the polishing surface 21a, so that the work can be smoothly formed at the boundary between the polishing surface 21a and the end surface 22a of the inner guide 22. Migration can be performed, and from this point the work can be prevented from falling down. Further, when the cutting amount of the work is increased toward the inner circumference, the end face 2 of the grinding wheel 2
Even if the wear of “a” becomes relatively large near the inner circumference, the end face 22 a of the inner guide 22 does not have a polishing action, and therefore there is no possibility that the processing accuracy of the work is reduced.
【0029】また、外ガイド23を設けたことにより、
ワークW1(図3参照)は、砥石車2の外周に接近した
位置にあるワークガイド17から研磨面21aに移行す
るときに、外ガイド23の端面23aを経由して研磨面
21aに移行するので、スムーズに移行することができ
る。これは、端面23aが、研磨面21aと連続する凹
曲面をなし、且つ研磨力を働かせないからである。ま
た、ワークが逆向きに研磨面21aからワークガイド1
7に移行して出て行くときも同様である。このように、
移行時のワークががたつかないので、砥石車2の外周部
に欠けが生じることがない。Also, by providing the outer guide 23,
When the work W1 (see FIG. 3) moves from the work guide 17 located close to the outer periphery of the grinding wheel 2 to the polishing surface 21a, it moves to the polishing surface 21a via the end surface 23a of the outer guide 23. , Can transition smoothly. This is because the end surface 23a forms a concave curved surface continuous with the polishing surface 21a and does not exert a polishing force. In addition, the work is moved in the opposite direction from the polishing surface 21a to the work guide 1.
The same is true when going out after moving to 7. in this way,
Since the work at the time of transfer does not rattle, chipping does not occur on the outer peripheral portion of the grinding wheel 2.
【0030】また、外ガイド23の端面23aでは、研
磨力が働かないので、ワークガイド17と砥石車2の端
面2aとの位置決め精度が十分に高くない場合であった
としても、ワークのがたつきを防止することができる。
従って、砥石車2の端面2aへ載せるときのワークの位
置決め、例えば、ワークガイド17の砥石車2に対する
組み付け位置精度を、高精度にせずに済む。Further, since the polishing force does not act on the end face 23a of the outer guide 23, even if the positioning accuracy between the work guide 17 and the end face 2a of the grinding wheel 2 is not sufficiently high, the work is loose. Sticking can be prevented.
Accordingly, the positioning of the work when the work is placed on the end surface 2a of the grinding wheel 2, for example, the positional accuracy of assembling the work guide 17 to the grinding wheel 2 does not need to be high.
【0031】このように本砥石車2では、砥石車2の端
面2aの内周寄り部分での摩耗や、外周寄り部分での欠
けを抑制できる結果、砥石車2の端面2aの形状精度を
維持するために、ドレス作業を定期的に行う場合のドレ
ス間隔を長くすることができ、また、ドレス時に、研磨
面21aを必要以上に削らずに済むので、砥石車2を長
寿命化することができる。As described above, in the grinding wheel 2, the wear of the end surface 2a of the grinding wheel 2 at the inner peripheral portion and the chipping at the outer peripheral portion can be suppressed, so that the shape accuracy of the end surface 2a of the grinding wheel 2 is maintained. Therefore, it is possible to lengthen the dress interval when performing dress work regularly, and it is not necessary to cut the polishing surface 21a more than necessary at the time of dressing, so that the life of the grinding wheel 2 can be extended. it can.
【0032】特に、砥石車2が内ガイド22および外ガ
イド23を共に備える場合には、より確実に長寿命化で
きて好ましい。なお、内ガイド22および外ガイド23
の少なくとも一方だけであっても、それに応じた効果を
得ることができる。また、内ガイド22および外ガイド
23は、砥石車本体21と近似する硬度に調整されてい
ることにより、同じ程度の耐摩耗性を有している。これ
により、研磨加工時に、内ガイド22、外ガイド23お
よび砥石車本体21の各端面は確実に均一に摩耗するの
で、砥石車2の端面2aの摩耗を径方向に均一にするこ
とができる。これに加えて、同じ程度の耐摩耗性を有し
ているので、砥石車2の端面2aをドレスする際に、単
一のドレス刃にて砥石車2の端面2a全体を均一にドレ
スすればよく、内ガイド22および外ガイド23を備え
ない従来の砥石車と同様に作業できるので、作業し易
い。In particular, when the grinding wheel 2 includes both the inner guide 22 and the outer guide 23, the life can be more reliably extended, which is preferable. The inner guide 22 and the outer guide 23
Even if only at least one of them is used, an effect corresponding to that can be obtained. Further, the inner guide 22 and the outer guide 23 have the same degree of wear resistance by being adjusted to a hardness similar to that of the grinding wheel main body 21. Thereby, at the time of polishing, each end face of the inner guide 22, the outer guide 23 and the grinding wheel main body 21 is surely and uniformly worn, so that the wear of the end face 2a of the grinding wheel 2 can be made uniform in the radial direction. In addition, since it has the same degree of wear resistance, when the end face 2a of the grinding wheel 2 is dressed, the entire end face 2a of the grinding wheel 2 can be uniformly dressed with a single dressing blade. Since the work can be performed similarly to a conventional grinding wheel without the inner guide 22 and the outer guide 23, the work is easy.
【0033】ここで、この作用を得られる内ガイド22
および外ガイド23の材質としては、樹脂系材料を主成
分とするものであればよい。ここで、樹脂系材料を主成
分とするものには、樹脂系材料のみからなるものを含む
趣旨である。樹脂系材料としては、樹脂を含む材料であ
ればよく、例えば、樹脂材料単体でもよいし、あるいは
樹脂材料と研磨力のない無機質または有機質のフィラー
とが配合されたものでもよい。本実施の形態の内ガイド
22および外ガイド23の材質は、エポキシ樹脂50重
量部とクリオライト50重量部とが均一に配合されたも
のである。また、内ガイド22および外ガイド23にお
いて、砥石車本体21と近似する硬度を得るために、樹
脂材料やフィラーの種類や配合割合が変更されてもよ
い。Here, the inner guide 22 which can obtain this function is provided.
The material of the outer guide 23 may be any material having a resin-based material as a main component. Here, the substance containing a resin-based material as a main component includes a substance composed of only a resin-based material. The resin-based material may be any material containing a resin. For example, the resin-based material may be a single resin material, or may be a resin material and an inorganic or organic filler having no abrasive power. The material of the inner guide 22 and the outer guide 23 in the present embodiment is a material in which 50 parts by weight of epoxy resin and 50 parts by weight of cryolite are uniformly mixed. Further, in the inner guide 22 and the outer guide 23, the type and the mixing ratio of the resin material and the filler may be changed in order to obtain a hardness similar to that of the grinding wheel main body 21.
【0034】また、内ガイド22の硬度において、砥石
車本体21と近似する硬度としては、ロックウェル硬度
計Lスケールにおいて、砥石車本体21の硬度に対して
±20以内の硬度を要求される。なお、砥石車本体21
の硬度は、ワークの種類および要求される研磨後の品質
に応じてロックウェル硬度計Lスケールで50〜120
の範囲内で変更されるものであり、その際には、変更さ
れた砥石車本体の硬度に対して±20以内の範囲内に内
ガイド22の硬度を調整する必要がある。また外ガイド
23の硬度についても、上述の硬度にすることが要求さ
れる。In the hardness of the inner guide 22, the hardness close to that of the grinding wheel main body 21 is required to be within ± 20 of the hardness of the grinding wheel main body 21 in the Rockwell hardness meter L scale. In addition, the grinding wheel main body 21
Is 50 to 120 on a Rockwell hardness tester L scale depending on the type of work and the required quality after polishing.
In this case, it is necessary to adjust the hardness of the inner guide 22 within a range of ± 20 with respect to the changed hardness of the grinding wheel main body. The hardness of the outer guide 23 is also required to be the above-described hardness.
【0035】また、内ガイド22および外ガイド23の
径方向の寸法は、研磨面21aを大きくするうえで、で
きるだけ薄くするのが好ましい。特に、内ガイド22の
径方向の厚み(幅)は、少なくともワークを支持できる
寸法(例えば、1mm)があればよく、さらに、1個の
ワークの直径寸法の50%以下の寸法が好ましい。その
理由としては、ワークの送り軌道18が端面2aの内周
縁部を通ることから、内ガイド22の厚みが上述の直径
寸法の50%を超える場合には、厚みが直径寸法の50
%の場合に比べて、ワークの倒れの防止効果は同じであ
るのに対して、研磨面21aが小さくなるからである。
具体的には、内ガイド22の幅は、ワークWである円錐
ころの大端面の直径寸法の略40%の寸法(2mm)と
されており、この寸法であれば、砥石車2の内周縁部で
ワークを十分に支持できる。The radial dimensions of the inner guide 22 and the outer guide 23 are preferably as thin as possible in order to enlarge the polished surface 21a. In particular, the radial thickness (width) of the inner guide 22 only needs to be at least a dimension (for example, 1 mm) that can support the work, and is more preferably 50% or less of the diameter of one work. The reason is that the feed track 18 of the work passes through the inner peripheral edge of the end face 2a. Therefore, when the thickness of the inner guide 22 exceeds 50% of the above-described diameter, the thickness is reduced to 50% of the diameter.
%, The effect of preventing the work from falling is the same, but the polished surface 21a is smaller.
Specifically, the width of the inner guide 22 is approximately 40% of the diameter of the large end face of the tapered roller (the workpiece W) (2 mm). The part can fully support the work.
【0036】外ガイド23の径方向の厚み(幅)は、1
個のワークの直径寸法の2分の1以上で、且つ1個のワ
ークの直径寸法以下の範囲の寸法が好ましい。例えば、
幅は、ワークの被研磨面となる円錐ころの大端面の直径
寸法にほぼ等しい寸法(5mm)とされている。外ガイ
ド23の厚みが、上述の直径寸法の2分の1以上の場合
には、ワークを砥石車2の端面2aに載せるときに、ワ
ークの中心がワークガイド17から端面23aに乗り移
った後にワークが研磨面21に入るようにできるので、
ワークを安定させる上で好ましく、また、外ガイド23
の厚みが、上述の直径寸法の2分の1以上で、上述の直
径寸法となるまでは、大きくなるほどにワークをより一
層安定させることができる。外ガイド23の厚みが、上
述の直径寸法となる場合に、外ガイド23の端面23a
はワーク全体を確実に載せて、安定に保持でき、ワーク
をワークガイド17と研磨面21aとの間で確実にスム
ーズに案内することができるが、外ガイド23の厚み
が、上述の直径寸法以上であっても、安定性は同じであ
るのに対して、研磨面が相対的に狭くなるので、好まし
くない。The thickness (width) of the outer guide 23 in the radial direction is 1
It is preferable that the diameter be in a range of not less than half the diameter of one work and not more than the diameter of one work. For example,
The width is set to a size (5 mm) substantially equal to the diameter of the large end surface of the tapered roller which is the surface to be polished of the work. When the thickness of the outer guide 23 is equal to or more than half of the above-mentioned diameter, when the work is placed on the end face 2a of the grinding wheel 2, the work is moved after the center of the work is transferred from the work guide 17 to the end face 23a. Can enter the polishing surface 21,
It is preferable to stabilize the work, and the outer guide 23
The work can be further stabilized as the thickness becomes greater than or equal to one-half of the above-mentioned diameter dimension and becomes the above-mentioned diameter dimension. When the thickness of the outer guide 23 has the above-described diameter, the end surface 23a of the outer guide 23
Can securely place the entire work and hold it stably, and can guide the work smoothly and reliably between the work guide 17 and the polishing surface 21a. However, the thickness of the outer guide 23 is equal to or larger than the above-described diameter. However, the stability is the same, but the polished surface is relatively narrow, which is not preferable.
【0037】また、内ガイド22の径方向の寸法は、外
ガイド23の径方向の寸法以下に小さくするのが好まし
い。というのは、上述の送り軌道18では、ワークは内
ガイド22を、外ガイド23よりも長い時間をかけて通
過することから、内ガイド22を相対的に小さくするの
が、研磨面21aを効果的に大きくできて、効率良く研
磨することができる。It is preferable that the radial dimension of the inner guide 22 be smaller than the radial dimension of the outer guide 23. This is because, in the above-described feed path 18, the work passes through the inner guide 22 for a longer time than the outer guide 23, so that the inner guide 22 is made relatively small, so that the polishing surface 21a has an effect. The polishing can be made large in size and can be polished efficiently.
【0038】なお、砥石車2は、円錐ころ軸受の円錐こ
ろの大端面の研磨用以外の用途に利用することもでき
る。また、凹曲面としては、球面以外の凹湾曲面であっ
てもよい。また、上述の実施の形態では、送り軌道18
の接線方向と、砥石車2の接線方向とが一致する位置で
は、ワークは内ガイド22の端面22aにだけ載って支
持されていたが、ワークの一部が、多少研磨面21aに
またがっていても構わない。The grinding wheel 2 can be used for purposes other than polishing the large end face of the tapered roller of the tapered roller bearing. Further, the concave curved surface may be a concave curved surface other than a spherical surface. In the above-described embodiment, the feed path 18
At a position where the tangential direction of the wheel and the tangential direction of the grinding wheel 2 coincide with each other, the work is supported only on the end face 22a of the inner guide 22, but a part of the work slightly straddles the polishing surface 21a. No problem.
【0039】その他、本発明の要旨を変更しない範囲で
種々の設計変更を施すことが可能である。In addition, various design changes can be made without changing the gist of the present invention.
【0040】[0040]
【発明の効果】請求項1に記載の発明によれば、研磨面
から滑らかに連続し、且つ研磨力を生じない内ガイドの
端面によって、ワークを案内することにより、砥石車の
端面内周部でのワークの倒れに起因する摩耗を防止で
き、砥石車を長寿命化することができる。According to the first aspect of the present invention, the work is guided by the end face of the inner guide which smoothly continues from the polishing surface and does not generate a polishing force, so that the inner peripheral portion of the end face of the grinding wheel is provided. Wear caused by the work falling down can be prevented, and the life of the grinding wheel can be extended.
【0041】請求項2に記載の発明によれば、内ガイド
が樹脂系材料を主成分とし、砥石車本体と近似する硬度
を有すれば、ドレス作業がし易い。請求項3に記載の発
明によれば、外ガイドの端面は、ここを経由するワーク
を、砥石車の外周に接近した位置と研磨面との間でスム
ーズに移行させることができるので、砥石車の端面の欠
けを防止できる結果、砥石車を長寿命化することができ
る。According to the second aspect of the present invention, if the inner guide has a resin-based material as a main component and a hardness similar to that of the grinding wheel main body, the dressing operation is easy. According to the third aspect of the present invention, the end surface of the outer guide can smoothly move the work passing therethrough between a position close to the outer periphery of the grinding wheel and the polishing surface. As a result, it is possible to extend the life of the grinding wheel.
【0042】請求項4に記載の発明によれば、外ガイド
が樹脂系材料を主成分とし、砥石車本体と近似する硬度
を有すれば、ドレス作業がし易い。According to the fourth aspect of the invention, if the outer guide has a resin-based material as a main component and a hardness similar to that of the grinding wheel main body, the dressing operation is easy.
【図1】本発明の一実施の形態を示す砥石車の断面図で
ある。FIG. 1 is a sectional view of a grinding wheel showing one embodiment of the present invention.
【図2】図1に示す砥石車を利用する研磨装置の概略構
成の模式図である。FIG. 2 is a schematic diagram of a schematic configuration of a polishing apparatus using the grinding wheel shown in FIG.
【図3】図1に示す砥石車を端面側から見た図である。FIG. 3 is a view of the grinding wheel shown in FIG. 1 as viewed from an end face side.
【図4】従来の砥石車でのワークの送り軌道を示す端面
側から見た図である。FIG. 4 is a diagram showing a feed trajectory of a workpiece in a conventional grinding wheel, viewed from an end face side.
2 砥石車 2a 端面 21 砥石車本体 21a 研磨面 21b 内周面 21c 外周面 22 内ガイド 22a 端面 23 外ガイド 23a 端面 2 grinding wheel 2a end face 21 grinding wheel main body 21a polished surface 21b inner peripheral surface 21c outer peripheral surface 22 inner guide 22a end surface 23 outer guide 23a end surface
───────────────────────────────────────────────────── フロントページの続き (72)発明者 相川 和也 広島県呉市吉浦新町2丁目3番20号 クレ ノートン株式会社内 (72)発明者 菅 憲一 広島県呉市吉浦新町2丁目3番20号 クレ ノートン株式会社内 Fターム(参考) 3C063 AA02 AB05 BB03 BC03 BG01 BG10 EE01 ──────────────────────────────────────────────────続 き Continuing on the front page (72) Inventor Kazuya Aikawa 2-3-1-20 Yoshiura Shinmachi, Kure City, Hiroshima Prefecture Inside Kure Norton Co., Ltd. (72) Inventor Kenichi Suga 2-3-20 Yoshiura Shinmachi, Kure City, Hiroshima Prefecture No. Cle Norton Co., Ltd. F-term (reference) 3C063 AA02 AB05 BB03 BC03 BG01 BG10 EE01
Claims (4)
ない円筒状の内ガイドとを備え、 砥石車本体の一端面に凹曲面をなす研磨面が形成され、 内ガイドの端面は、研磨面の凹曲面に連続する凹曲面を
なし、ワークの被研磨面の少なくとも一部を案内するこ
とを特徴とする砥石車。1. A grinding wheel main body, and a cylindrical inner guide fixed to an inner peripheral surface of the grinding wheel main body and containing no abrasive material, wherein a concave curved surface is formed on one end surface of the grinding wheel main body. A grinding wheel, wherein a grinding surface to be formed is formed, and an end surface of the inner guide forms a concave curved surface that is continuous with the concave curved surface of the polishing surface, and guides at least a part of the surface to be polished of the work.
ガイドは、樹脂系材料を主成分とし、砥石車本体と近似
する硬度を有することを特徴とする砥石車。2. The grinding wheel according to claim 1, wherein the inner guide is mainly composed of a resin-based material and has a hardness similar to that of the grinding wheel main body.
ない円筒状の外ガイドとを備え、 砥石車本体の一端面に凹曲面をなす研磨面が形成され、 外ガイドの端面は、研磨面の凹曲面に連続する凹曲面を
なし、ワークの被研磨面を研磨面へ案内することを特徴
とする砥石車。3. A grinding wheel main body, and a cylindrical outer guide fixed to an outer peripheral surface of the grinding wheel main body and containing no abrasive material, and having a concave curved surface on one end surface of the grinding wheel main body. A grinding wheel, wherein a grinding surface is formed, and an end surface of the outer guide forms a concave curved surface which is continuous with the concave curved surface of the polishing surface, and guides a surface to be polished of the work to the polishing surface.
ガイドは、樹脂系材料を主成分とし、砥石車本体と近似
する硬度を有することを特徴とする砥石車。4. The grinding wheel according to claim 3, wherein the outer guide is mainly composed of a resin-based material and has a hardness similar to that of the grinding wheel main body.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14497399A JP3679948B2 (en) | 1999-05-25 | 1999-05-25 | Grinding wheel |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14497399A JP3679948B2 (en) | 1999-05-25 | 1999-05-25 | Grinding wheel |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2000334665A true JP2000334665A (en) | 2000-12-05 |
JP3679948B2 JP3679948B2 (en) | 2005-08-03 |
Family
ID=15374515
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14497399A Expired - Fee Related JP3679948B2 (en) | 1999-05-25 | 1999-05-25 | Grinding wheel |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3679948B2 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011036998A (en) * | 2010-09-21 | 2011-02-24 | Jtekt Corp | Method of manufacturing roller bearing |
CN104816259A (en) * | 2015-05-25 | 2015-08-05 | 蓝思科技股份有限公司 | Grinding head for polishing sapphire mirror |
-
1999
- 1999-05-25 JP JP14497399A patent/JP3679948B2/en not_active Expired - Fee Related
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011036998A (en) * | 2010-09-21 | 2011-02-24 | Jtekt Corp | Method of manufacturing roller bearing |
CN104816259A (en) * | 2015-05-25 | 2015-08-05 | 蓝思科技股份有限公司 | Grinding head for polishing sapphire mirror |
Also Published As
Publication number | Publication date |
---|---|
JP3679948B2 (en) | 2005-08-03 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5360623B2 (en) | Grinding machine for double-sided flat workpiece | |
JPH0919869A (en) | Sheet for grinding | |
JP2008302475A (en) | Wheel spindle device in grinder | |
US20050197051A1 (en) | High smoothness grinding process and apparatus for metal material | |
US5235959A (en) | Arrangement and method for regenerating rotating precision grinding tools | |
JP2000334665A (en) | Grinding wheel | |
JP2002233934A (en) | Through-in grinding method and device | |
US5993300A (en) | Ultrasonic vibration composite processing tool | |
JP3455411B2 (en) | Double head surface grinder | |
JP4208364B2 (en) | Spherical surface generating device and spherical surface generating method | |
JP2000326195A (en) | Grinding method for annular groove | |
JP2535949B2 (en) | Double-head grinding machine | |
JP2010017788A (en) | Grinding device and grinding method | |
JPS6335380B2 (en) | ||
JPH11320390A (en) | Surface plate for surface machining device and method of using same | |
JPH01216777A (en) | Emergy wheel | |
JP2001079737A (en) | Grinding wheel and double-faced grinding device | |
JP2003071702A (en) | Superfinishing process method of raceway of ball bearing and superfinishing grinding structure | |
JP3189217B2 (en) | Centerless grinding machine | |
JPS60162603A (en) | Method of cutting hard and brittle material by diamond cutting wheel | |
JPH08323618A (en) | High accurate-high efficient truing and dressing methods for diamond grinding wheel by composite grinding wheel | |
RU2120848C1 (en) | Spindle grinding head | |
JPS58132461A (en) | Method and tool for reshaping regulating wheel of centerless grinder | |
JP2001009719A (en) | Truing/dressing method and device for super-abrasive grain wheel | |
JPH0457677A (en) | Cup like grinding wheel |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
A977 | Report on retrieval |
Free format text: JAPANESE INTERMEDIATE CODE: A971007 Effective date: 20050111 |
|
A131 | Notification of reasons for refusal |
Free format text: JAPANESE INTERMEDIATE CODE: A131 Effective date: 20050201 |
|
A521 | Written amendment |
Free format text: JAPANESE INTERMEDIATE CODE: A523 Effective date: 20050404 |
|
TRDD | Decision of grant or rejection written | ||
A01 | Written decision to grant a patent or to grant a registration (utility model) |
Free format text: JAPANESE INTERMEDIATE CODE: A01 Effective date: 20050426 |
|
A61 | First payment of annual fees (during grant procedure) |
Free format text: JAPANESE INTERMEDIATE CODE: A61 Effective date: 20050516 |
|
R150 | Certificate of patent or registration of utility model |
Ref document number: 3679948 Country of ref document: JP Free format text: JAPANESE INTERMEDIATE CODE: R150 Free format text: JAPANESE INTERMEDIATE CODE: R150 |
|
S533 | Written request for registration of change of name |
Free format text: JAPANESE INTERMEDIATE CODE: R313533 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20080520 Year of fee payment: 3 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090520 Year of fee payment: 4 |
|
S111 | Request for change of ownership or part of ownership |
Free format text: JAPANESE INTERMEDIATE CODE: R313115 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20090520 Year of fee payment: 4 |
|
R350 | Written notification of registration of transfer |
Free format text: JAPANESE INTERMEDIATE CODE: R350 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20100520 Year of fee payment: 5 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110520 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20110520 Year of fee payment: 6 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120520 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20120520 Year of fee payment: 7 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20130520 Year of fee payment: 8 |
|
FPAY | Renewal fee payment (event date is renewal date of database) |
Free format text: PAYMENT UNTIL: 20140520 Year of fee payment: 9 |
|
LAPS | Cancellation because of no payment of annual fees |