JP2004148461A - End face grinding method and its device - Google Patents

End face grinding method and its device Download PDF

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Publication number
JP2004148461A
JP2004148461A JP2002317795A JP2002317795A JP2004148461A JP 2004148461 A JP2004148461 A JP 2004148461A JP 2002317795 A JP2002317795 A JP 2002317795A JP 2002317795 A JP2002317795 A JP 2002317795A JP 2004148461 A JP2004148461 A JP 2004148461A
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Japan
Prior art keywords
face
grinding
work
held
face processing
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JP2002317795A
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JP4175867B2 (en
Inventor
Kazuo Kitada
和生 北田
Satoru Yamamoto
悟 山本
Ryuzo Yamashita
隆三 山下
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Nitto Denko Corp
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Nitto Denko Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To make an excellent finish without unevenness due to dislocation along the surface of a polarizing membrane, in grinding the end face of a laminate of polarizing membranes. <P>SOLUTION: While maintaining both flat portions of work 1, consisting of a laminate of polarizing membranes and orthogonally crossing end faces, by means of a flat face holding tool 3 and a flat face holding tool 2, mutually facing orthogonally crossing end faces are almost simultaneously ground through an end mill 7. After the grinding of each end face, grinding burrs generated on each angular portion are ground and removed through another end mill 8. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
この発明は、積層された偏光膜の端面を研削加工する端面加工方法およびその装置に関する。
【0002】
【従来の技術】
従来、液晶パネルなどに使用される偏光膜は、結晶のように光軸を有している関係上、所定の形状(矩形)に形抜き加工した後に、そのカット面にクラックが頻繁に発生する。このクラックを除去するために、カット面の四周端面に研削処理を施している。具体的には、積層した複数枚の偏光膜群の平面部分を上下一対の保持部で挟み込み、偏光膜群の対向する端面を一対のグラインダで挟み込みながら同時に研削する手段が利用されている。
【0003】
【発明が解決しようとする課題】
しかし、従来手段では、積層された偏光膜群を上下からのみ挟み込み保持しているために、グラインダで端面を研削するときに発生する応力によって偏光膜に水平方向(膜面に沿った方向)へのズレが生じて研削ムラが発生している。
【0004】
本発明は、このような事情に鑑みてなされたものであって、偏光膜の膜面に沿った方向へのズレに起因する研削ムラのない良好な仕上がりの研削加工を行えるようにする端面加工方法およびその装置を提供することを主たる目的としている。
【0005】
【課題を解決するための手段】
この発明は、上記目的を達成するために次のような構成をとる。
【0006】
すなわち、請求項に1係る本発明は、積層された偏光膜の端面を研削加工する端面加工方法であって、
複数枚の偏光膜を積層してなるワークの両平面部分および互いに直交する端面を保持しながら、この保持された端面と対向する端面を研削することを特徴とするものである。
【0007】
(作用・効果)複数枚の偏光膜を積層してなるワークは、その両平面部分で挟み込み保持されるのみならず、互いに直交する端面も保持される。そのため、保持端面に対向する端面の研削加工中に発生する応力によって、偏光膜がその膜面に沿った方向にズレ動くことがない。したがって、研削ムラのない良好な仕上がりの端面研削が可能となる。
【0008】
また、請求項2に係る発明は、請求項1に記載の端面加工方法において、前記保持された端面と対向する互いに直交する2つの端面を略同時に研削することを特徴とする
【0009】
(作用・効果)2つの端面を略同時に研削することにより、端面の研削加工処理の能率を上げるのに有効である。
【0010】
また、請求項3に係る発明は、積層された偏光膜の端面を研削加工する端面加工装置であって、
複数枚の偏光膜を積層してなるワークの互いに直交する端面を保持する一対の端面保持手段と、
ワークの平面部分を挟み込んで保持する一対の平面保持手段と、
端面保持手段によって保持された端面に対向する端面を研削する端面研削手段とを備えたことを特徴とするものである。
【0011】
(作用・効果)複数枚の偏光膜を積層してなるワークは、その両平面部分において一対の平面保持手段で挟み込み保持されるのみならず、互いに直交する端面においても一対の端面保持手段で受け止め保持される。そのため、保持端面に対向する端面の研削加工中に発生する応力によって、偏光膜がその膜面に沿った方向にズレ動くことがない。したがって、請求項1に記載の端面加工方法を好適に実現することができる。
【0012】
また、請求項4に係る発明は、請求項3に記載の端面加工装置において、前記端面研削手段を、互いに直交する2つの端面を略同時に研削するよう構成したことを特徴とするものである。
【0013】
(作用・効果)1回の研削処理で、互いに直交する2つの端面を略同時に研削することができ、その後、ワークの姿勢を180°反転変更することで互いに直交する残りの端面を研削処理することができる、結果、効率の良い端面の研削加工が行える。
【0014】
また、請求項5に係る発明は、請求項3または請求項4に記載の端面加工装置において、前記ワークの角部を研削する角部研削手段を備えたことを特徴とするものである。
【0015】
(作用・効果)角部研削手段を備えることにより、端面の研削加工の後に、ワークの角部に発生した研削かえりを研削除去することができる。すなわち、後工程で角部処理を行う場合に比較して作業能率の向上を図ることができる。
【0016】
また、請求項6に係る発明は、請求項3ないし請求項5のいずれかに記載の端面加工装置において、前記平面保持手段を、連結された駆動手段によって同時に旋回して、挟み込み保持したワークを回転させるよう構成したことを特徴とするものである。
【0017】
(作用・効果)一対の平面保持手段を同時に旋回させることで、挟み持たれたワークをこじりなく回転させることができ、研削手段に対する姿勢を任意に変更することができる、結果、精度の高い研削を行う上で有効となる。
【0018】
また、請求項7に係る発明は、請求項3ないし請求項6のいずれかに記載の端面加工装置において、前記研削手段がエンドミルであることを特徴とするものである。
【0019】
(作用・効果)ワークの端面にエンドミルの周面を沿わせることで、エンドミルと端面とを直線的に接触させ、エンドミルをワークの端面と平行に移動させることで、端面全体を連続的に研削することができる。また、エンドミルを利用することにより、ワークの端面に沿った方向の応力の発生を防止でき、仕上がりの優れた端面研削が可能となる。
【0020】
【発明の実施の形態】
以下、図面を参照して本発明の一実施例を説明する。
【0021】
図1は、本発明の端面加工方法による加工手順の概略を示す側面図、図2は、加工手順の概略を示す正面図がそれぞれ示されている。
その詳細を各工程順に説明する。
【0022】
(1) 先ず、図1(a)および図2(a)に示すように、矩形に形抜きカットされた複数枚の偏光膜を積層(偏光膜群)してなるワーク1が、互いに直交する斜め上向き姿勢に配備された一対の端面保持具2と、互いに対向配備された平面保持具3の間に供給装填される。このワーク1における互いに直交す2つの端面S,Sがそれぞれ端面保持具2に受け止め保持される。ここで、両端面保持具2は、ベース4に装着されたエアシリンダ5によってそれぞれ進退可能に支持されるとともに、平面保持具3は、ベース4に装着されたエアシリンダ6によって水平移動可能に構成されている。なお、端面保持具2は、本発明の端面保持手段に、平面保持具3は平面保持手段にそれぞれ相当する。
【0023】
(2) 図1(b)および図2(b)に示すように、平面保持具3が進出作動して、ワークWの左右の平面部分が両平面保持具3の間に挟み込み保持され、ワーク1が所定の姿勢に固定保持される。
【0024】
(3) 図1(c)および図2(c)に示すように、待機していた端面研削手段の一例である2本のエンドミル7の周面が、上向き姿勢にあるワーク1の両端面S,Sに平行に接触される。
【0025】
具体的には、図2(c)の2点鎖線に示すように、移動方向に所定間隔をもって待機位置に配備された2本のエンドミル7が、高速回転駆動されながら図中の右側に平行に横移動してゆく。この移動過程で、各エンドミル7がワーク1の2つの端面S,Sに順番に接触し、各端面を研削してゆく。
【0026】
(4) 図1(d)および図2(d)に示すように、待機していた角部研削手段の一例である2本のエンドミル8が、ワーク1における2つの角部e,eに接触しながら平行に横移動される。
【0027】
具体的には、図2(d)の2点鎖線に示すように、移動方向に所定間隔をもって待機位置に配備された2本のエンドミル8が、高速回転駆動されながら図中の右側に平行に横移動してゆく。この移動過程で、各エンドミル8がワーク1における対角位置にある2つの角部e,eに接触し、各角部に発生した研削かえりを研削除去してゆく。
【0028】
なお、エンドミル8の配置関係としは、この形態に限定されず、2本のエンドミル8がワーク1の端面幅方向に対向するように配備してもよい。
【0029】
(5) 図1(e)および図2(e)に示すように、端面保持具2のみが後退された後、両平面保持具3がワーク1を挟み込み保持したままで、その中心軸心P周りに180°だけ駆動旋回されてワーク1が反転回動される。その後、両端面保持具2が元のワーク保持位置まで進出して、研削加工の済んだワーク端面S,Sが端面保持具2で受け止め保持される。
【0030】
(6) 上記工程(3)および(4)が行われ、ワーク1のすべての端面S〜Sとすべての角部e〜eの研削が完了する。
【0031】
(7)すべての研削工程が終了すると、図1(f)および図2(f)に示すように、両平面保持具3が後退移動され、研削加工の済んだワーク1’が取り出される。
【0032】
以上で1回の研削加工処理が完了し、以後、新しいワーク1の搬入装填ごとに上記処理が繰り返される。
【0033】
上述のように、互いに直交する斜め上向き姿勢に配備された一対の端面保持具2と、互いに対向配備された平面保持具3によって保持されたワーク1に対し、その保持された端面と対向する互いに直交する面をエンドミル7で研削することにより、端面研削中に発生する応力によって偏光膜がその膜面に沿った方向にズレ動くのを防止することができる。しがって、研削ムラのない良好な仕上がりの研削が可能となる。
【0034】
また、角部研削手段としてのエンドミル8を備えることにより、端面研削処理後にワーク1の角部に発生した研削かえりを端面研削処理過程において同時に行うことができる。したがって、角部を研削するための工程を別途設ける必要がないので、作業効率の向上を図ることができる。
【0035】
さらに、エンドミルの周面を利用した直線状の研削を平行移動させて、ワーク1の端面および角部の研削を行うので、ワーク1の端面に沿った方向の応力の発生を防止することができる、結果、仕上がりの優れた端面研削が可能となる。
【0036】
次に、図3および図4を参照しながら上記端面研削加工方法を実行する端面加工装置の一実施例を説明する。
【0037】
図3および図4に示すように、端面加工装置における枠組み構造の主フレーム10の下部には、基台11が前後調節可能に連結固定されるとともに、この基台11の上面に設けたベース4に、端面保持具2がエアシリンダ5によって斜めに進退可能に装着されている。また、図4に示すように、基台11の左右に立設した軸受け部12,13のそれぞれに、左右一対の平面保持具3が軸心P周りに回転自在に装着されている。
【0038】
ここで、一方(図3では左側)の平面保持具3を連結した支軸14は、回転のみ可能に軸受け部12に挿通支持されるとともに、他方(図3では右側)の平面保持具3を連結した支軸15は、回転可能かつ回転軸心方向へスライド進退可能に軸受け部13に挿通支持されている。そして、支軸15の端部を支承した可動軸受け部16が基台11の下面に取り付けたエアシリンダ17によって左右水平移動可能に構成されており、このエアシリンダ17の伸縮作動によって支軸15が左右に移動されることで、対向する両平面保持具3が相対接近および離反されて、ワーク1の挟み込み、および、解除が行われるようになっている。
【0039】
可動軸受け部16には減速機付きのモータ18が装備され、このモータ18と、支軸15とが歯付きベルトなどのスリップのないベルト19を介して巻き掛け連動されている。
【0040】
基台11の下方には、伸縮自在な伝動軸20が水平に配備され、伝動軸20の一端側20aが可動軸受け部16に支承されるとともに、ベルト19を介してモータ18に連動連結されている。そして、伝動軸20の他端側20bと固定配備された平面保持具3の支軸14とがベルト21を介して巻き掛け連動されている。したがって、モータ18が回転作動することで、両平面保持具3が同時に同方向に同調回転されるようになっている。
【0041】
主フレーム10の上部には、ボールネジ利用の水平送り機構22を介して左右に水平移動される前後一対の可動台23が配備され、モータ24によって高速回転駆動される端面研削用のエンドミル7が各可動台23に装着されている。
【0042】
つまり、前後の端面保持具2によって下方から受け止め支持されるとともに、左右の平面保持具3によって左右から挟み込み保持されたワーク1の直交する2つの端面を、左右に水平移動されるこれら両エンドミル7の周面によって研削するよう構成されている。
【0043】
なお、例示された端面研削装置では、ワーク1の角部e1〜e4を研削するエンドミル8が備えられていないが、端面研削用のエンドミルと同様な構成で左右移動可能に装備することができる。
【0044】
本発明は、以下のような形態で実施することもできる。
【0045】
(1)上記実施例では、1回の研削工程で互いに直交する2つの端面を同時に研削加工しているが、ワ−ク1を所定角度づつ回転させて姿勢を変更し、端面を一面づつ研削する形態で実施することも可能である。
【0046】
(2)端面研削用のエンドミル7の角度および作用位置を変更可能に構成して、角部研削用のエンドミル8と兼用することも可能である。
【0047】
(3)端面研削手段にグラインダを利用することも可能である。
【0048】
(4)上記実施例では、ワーク1の端面が斜め上向き姿勢となるように端面保持具2と平面保持具3によって保持して加工していたが、ワーク1の平面が平面保持具3によって上下方向から保持され、端面が横方向から端面保持具2により保持されるように縦姿勢で加工する形態も可能である。
【0049】
(5)上記実施例では、各端面を研削したのちに2箇所の角部を研削していたが、3箇所の角部を同時に研削してもよい。例えば、端面S,Sを研削した後に角部e,e,eを研削し、次にワーク1をその中心軸心P周りに180°回転させて端面S,Sを研削した後に、角部e,e,eを研削するようにしてもよい。
【0050】
【発明の効果】
以上の説明から明らかなように、本発明によれば、複数枚の偏光膜を積層してなるワークのその両平面部分で挟み込み保持するのみならず、互いに直交する端面においても保持するので、端面の研削加工中に発生する応力によって偏光膜がその膜面に沿った方向にズレ動くことがない、結果、研削ムラのない良好な仕上がりの端面研削が可能となる。
【図面の簡単な説明】
【図1】(a)〜(f)は端面研削工程の概略を示す側面図である。
【図2】(a)〜(f)は端面研削工程の概略を示す正面図である。
【図3】端面研削装置の側面図である。
【図4】端面研削装置の正面図である。
【符号の説明】
1 … ワーク
2 … 端面保持具
3 … 平面保持具
7 … エンドミル(端面研削手段)
8 … エンドミル(角部研削手段)
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an end face processing method and an apparatus for grinding an end face of a laminated polarizing film.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, a polarizing film used for a liquid crystal panel or the like has an optical axis like a crystal, and therefore, after being cut into a predetermined shape (rectangle), cracks frequently occur on the cut surface. . In order to remove these cracks, a grinding process is performed on the four circumferential end surfaces of the cut surface. Specifically, a means is used in which the plane portions of a plurality of laminated polarizing film groups are sandwiched between a pair of upper and lower holders, and the opposite end faces of the polarizing film groups are simultaneously ground while being sandwiched between a pair of grinders.
[0003]
[Problems to be solved by the invention]
However, in the conventional means, the stacked polarizing film group is sandwiched and held only from above and below, so that the stress generated when the end face is ground by the grinder causes the polarizing film to move in the horizontal direction (the direction along the film surface). And the unevenness in grinding occurs.
[0004]
The present invention has been made in view of such circumstances, and has an end face processing that enables a good finish grinding processing without grinding unevenness due to a deviation in a direction along a film surface of a polarizing film. It is a primary object to provide a method and an apparatus thereof.
[0005]
[Means for Solving the Problems]
The present invention has the following configuration to achieve the above object.
[0006]
That is, the present invention according to claim 1 is an end face processing method for grinding an end face of a laminated polarizing film,
The present invention is characterized in that an end face opposed to the held end face is ground while holding both plane portions and end faces orthogonal to each other of a work formed by laminating a plurality of polarizing films.
[0007]
(Operation / Effect) A work formed by laminating a plurality of polarizing films is not only sandwiched and held between the two plane portions, but also the end faces orthogonal to each other are held. Therefore, the polarizing film does not move in the direction along the film surface due to the stress generated during the grinding of the end surface facing the holding end surface. Therefore, it is possible to perform a good finished end surface grinding without grinding unevenness.
[0008]
According to a second aspect of the present invention, in the end face processing method according to the first aspect, two orthogonally facing end faces facing the held end face are substantially simultaneously ground.
(Operation / Effect) By grinding the two end faces substantially simultaneously, it is effective to increase the efficiency of the grinding processing of the end faces.
[0010]
The invention according to claim 3 is an end face processing apparatus for grinding an end face of a laminated polarizing film,
A pair of end face holding means for holding mutually orthogonal end faces of a work formed by laminating a plurality of polarizing films,
A pair of flat holding means for sandwiching and holding the flat portion of the work,
End grinding means for grinding an end face opposed to the end face held by the end face holding means.
[0011]
(Function / Effect) A work formed by laminating a plurality of polarizing films is not only sandwiched and held by a pair of plane holding means on both plane portions, but also received by a pair of end face holding means on end faces orthogonal to each other. Will be retained. Therefore, the polarizing film does not move in the direction along the film surface due to the stress generated during the grinding of the end surface facing the holding end surface. Therefore, the end face processing method according to claim 1 can be suitably realized.
[0012]
According to a fourth aspect of the present invention, in the end face processing apparatus of the third aspect, the end face grinding means is configured to grind two end faces orthogonal to each other substantially simultaneously.
[0013]
(Operation / Effect) In one grinding process, two end surfaces orthogonal to each other can be ground substantially at the same time, and thereafter, the other end surfaces orthogonal to each other are ground by changing the posture of the work by 180 ° inversion. As a result, efficient end face grinding can be performed.
[0014]
According to a fifth aspect of the present invention, there is provided the end face processing apparatus according to the third or fourth aspect, further comprising corner grinding means for grinding a corner of the work.
[0015]
(Operation / Effect) By providing the corner grinding means, it is possible to grind and remove the grinding burr generated at the corner of the work after the grinding of the end face. That is, the work efficiency can be improved as compared with the case where the corner processing is performed in a later step.
[0016]
According to a sixth aspect of the present invention, in the end face processing apparatus according to any one of the third to fifth aspects, the flat holding means is simultaneously turned by a connected driving means to simultaneously hold the workpiece which is sandwiched and held. It is characterized in that it is configured to rotate.
[0017]
(Operation / Effect) By simultaneously rotating the pair of plane holding means, the held work can be rotated without twisting, and the posture with respect to the grinding means can be arbitrarily changed. As a result, high precision grinding can be achieved. It is effective in performing.
[0018]
According to a seventh aspect of the present invention, in the end face machining apparatus according to any one of the third to sixth aspects, the grinding means is an end mill.
[0019]
(Operation / Effect) The end mill is brought into linear contact with the end face by aligning the peripheral surface of the end mill with the end face of the work, and the entire end face is continuously ground by moving the end mill in parallel with the end face of the work. can do. Further, by using an end mill, generation of stress in a direction along the end face of the work can be prevented, and end face grinding with excellent finish can be performed.
[0020]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described below with reference to the drawings.
[0021]
FIG. 1 is a side view schematically illustrating a processing procedure according to the end face processing method of the present invention, and FIG. 2 is a front view schematically illustrating the processing procedure.
The details will be described in the order of each step.
[0022]
(1) First, as shown in FIGS. 1 (a) and 2 (a), a plurality of polarizing films cut and cut into a rectangular shape and a plurality of polarizing films 1 (a polarizing film group) are orthogonal to each other. It is supplied and loaded between a pair of end face holders 2 arranged in an obliquely upward posture and plane holders 3 arranged opposite to each other. Two mutually orthogonal end surfaces S 3 and S 4 of the work 1 are respectively received and held by the end surface holder 2. Here, both end face holders 2 are supported by air cylinders 5 mounted on the base 4 so as to be able to advance and retreat, respectively, and the flat holder 3 is configured to be horizontally movable by an air cylinder 6 mounted on the base 4. Have been. The end face holder 2 corresponds to the end face holding means of the present invention, and the plane holder 3 corresponds to the plane holding means.
[0023]
(2) As shown in FIGS. 1 (b) and 2 (b), the flat holder 3 moves forward, and the left and right flat portions of the work W are sandwiched and held between the two flat holders 3 to hold the work. 1 is fixedly held in a predetermined posture.
[0024]
(3) As shown in FIGS. 1 (c) and 2 (c), the peripheral surfaces of two end mills 7 which are one example of the end surface grinding means that have been on standby have both end surfaces S of the work 1 in the upward posture. 1, in parallel to contact the S 2.
[0025]
Specifically, as shown by a two-dot chain line in FIG. 2C, two end mills 7 arranged at standby positions at predetermined intervals in the moving direction are parallel to the right side in the drawing while being driven at high speed rotation. Moving sideways. In this movement process, each end mill 7 comes in contact with the two end faces S 1 and S 2 of the work 1 in order, and grinds each end face.
[0026]
(4) As shown in FIG. 1D and FIG. 2D, two end mills 8, which are examples of the corner grinding means that have been waiting, are replaced with two corners e 1 and e 4 of the work 1. It is moved in parallel while touching.
[0027]
More specifically, as shown by a two-dot chain line in FIG. 2D, two end mills 8 arranged at standby positions at predetermined intervals in the moving direction are parallel to the right side in the drawing while being driven to rotate at high speed. Moving sideways. In this movement process, each end mill 8 comes into contact with two corners e 1 and e 4 at diagonal positions on the work 1 and grinds and removes grinding burr generated at each corner.
[0028]
In addition, the arrangement relationship of the end mills 8 is not limited to this mode, and the two end mills 8 may be arranged so as to face each other in the end surface width direction of the work 1.
[0029]
(5) As shown in FIGS. 1 (e) and 2 (e), after only the end face holder 2 is retracted, the center axis P is maintained while the two flat holders 3 sandwich and hold the work 1. The work 1 is turned around by 180 °, and the work 1 is turned around. Thereafter, the end face holders 2 advance to the original work holding position, and the workpiece end faces S 1 and S 2 that have been subjected to the grinding process are received and held by the end face holders 2.
[0030]
(6) The steps (3) and (4) are performed, and the grinding of all the end faces S 1 to S 4 and all the corners e 1 to e 4 of the work 1 is completed.
[0031]
(7) When all the grinding steps are completed, as shown in FIG. 1 (f) and FIG. 2 (f), both flat holders 3 are moved backward, and the work 1 ′ having been ground is taken out.
[0032]
Thus, one grinding processing is completed, and thereafter, the above processing is repeated every time a new work 1 is loaded and loaded.
[0033]
As described above, the pair of end face holders 2 arranged in a diagonally upward posture orthogonal to each other and the work 1 held by the flat holder 3 arranged opposite to each other are opposed to each other opposite to the held end faces. By grinding the orthogonal surfaces with the end mill 7, it is possible to prevent the polarizing film from moving in the direction along the film surface due to the stress generated during the end surface grinding. Accordingly, it is possible to perform a good finish grinding without grinding unevenness.
[0034]
Further, by providing the end mill 8 as the corner grinding means, the grinding burr generated at the corner of the work 1 after the edge grinding can be simultaneously performed in the edge grinding process. Therefore, there is no need to separately provide a step for grinding the corners, so that the working efficiency can be improved.
[0035]
Furthermore, since the linear grinding using the peripheral surface of the end mill is moved in parallel to grind the end face and the corner of the work 1, it is possible to prevent the generation of stress in the direction along the end face of the work 1. As a result, it is possible to perform an excellent end surface grinding.
[0036]
Next, an embodiment of an end face processing apparatus for executing the above-described end face grinding method will be described with reference to FIGS.
[0037]
As shown in FIGS. 3 and 4, a base 11 is fixedly connected to the lower part of the main frame 10 having a frame structure in the end face processing apparatus so as to be adjustable in the front-rear direction. The end face holder 2 is mounted so as to be able to advance and retreat obliquely by an air cylinder 5. As shown in FIG. 4, a pair of left and right plane holders 3 are rotatably mounted around the axis P on bearings 12 and 13 erected on the left and right sides of the base 11, respectively.
[0038]
Here, the support shaft 14 to which the one (left side in FIG. 3) flat holder 3 is connected is inserted into and supported by the bearing portion 12 so as to be rotatable only, and the other (right side in FIG. 3) flat holder 3 The connected support shaft 15 is inserted into and supported by the bearing unit 13 so as to be rotatable and slidable in the direction of the rotation axis. The movable bearing 16 supporting the end of the support shaft 15 is configured to be horizontally movable left and right by an air cylinder 17 mounted on the lower surface of the base 11, and the expansion and contraction operation of the air cylinder 17 causes the support shaft 15 to move. By being moved to the left and right, the opposing flat holders 3 are relatively approached and separated from each other, and the work 1 is pinched and released.
[0039]
The movable bearing portion 16 is equipped with a motor 18 having a speed reducer. The motor 18 and the support shaft 15 are wound around and interlocked with each other via a slip-free belt 19 such as a toothed belt.
[0040]
A telescopic transmission shaft 20 is horizontally arranged below the base 11, and one end side 20 a of the transmission shaft 20 is supported by the movable bearing portion 16, and is linked to a motor 18 via a belt 19. I have. The other end 20b of the transmission shaft 20 and the support shaft 14 of the fixedly mounted flat holder 3 are wound around and interlocked with each other via a belt 21. Therefore, when the motor 18 rotates, the two flat holders 3 are simultaneously tuned and rotated in the same direction.
[0041]
On the upper part of the main frame 10, a pair of front and rear movable tables 23 which are horizontally moved to the left and right via a horizontal feed mechanism 22 using a ball screw are provided. It is mounted on a movable base 23.
[0042]
That is, both end mills 7 are received and supported by the front and rear end face holders 2 from below, and horizontally move two orthogonal end faces of the work 1 sandwiched and held by the left and right plane holders 3 from left and right. It is configured to grind by the peripheral surface of.
[0043]
In addition, in the illustrated end face grinding apparatus, the end mill 8 for grinding the corners e1 to e4 of the work 1 is not provided, but the end mill for end face grinding can be equipped with the same configuration as the end mill for end face grinding so as to be movable left and right.
[0044]
The present invention can be implemented in the following forms.
[0045]
(1) In the above embodiment, two end faces perpendicular to each other are simultaneously ground in one grinding step. However, the posture is changed by rotating the work 1 by a predetermined angle, and the end faces are ground one by one. It is also possible to carry out in the form of.
[0046]
(2) It is also possible to change the angle and the operation position of the end mill 7 for end face grinding so that it can also be used as the end mill 8 for corner grinding.
[0047]
(3) It is also possible to use a grinder for the end face grinding means.
[0048]
(4) In the above embodiment, the work 1 is held and processed by the end face holder 2 and the plane holder 3 so that the end face of the work 1 is inclined upward, but the plane of the work 1 is vertically moved by the plane holder 3. It is also possible to adopt a form in which the end face is held in the vertical direction so that the end face is held by the end face holder 2 in the horizontal direction.
[0049]
(5) In the above embodiment, two corners are ground after each end face is ground. However, three corners may be ground simultaneously. For example, the corners e 1 , e 2 , and e 4 are ground after grinding the end faces S 1 and S 2 , and then the work 1 is rotated by 180 ° around the center axis P to change the end faces S 3 and S 4 . After grinding, the corners e 1 , e 2 , and e 3 may be ground.
[0050]
【The invention's effect】
As is apparent from the above description, according to the present invention, not only the work in which a plurality of polarizing films are laminated is sandwiched and held between the two plane portions, but also the work is held at the end faces orthogonal to each other. The polarizing film does not shift in the direction along the film surface due to the stress generated during the grinding process, and as a result, it is possible to grind the end face with a good finish without grinding unevenness.
[Brief description of the drawings]
FIGS. 1A to 1F are side views schematically showing an end face grinding step.
FIGS. 2A to 2F are front views schematically showing an end face grinding step.
FIG. 3 is a side view of the end face grinding device.
FIG. 4 is a front view of the end face grinding device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Work 2 ... End face holder 3 ... Flat holder 7 ... End mill (end face grinding means)
8 End mill (corner grinding means)

Claims (7)

積層された偏光膜の端面を研削加工する端面加工方法であって、
複数枚の偏光膜を積層してなるワークの両平面部分および互いに直交する端面を保持しながら、この保持された端面と対向する端面を研削することを特徴とする端面加工方法。
An end face processing method for grinding the end face of the laminated polarizing film,
An end face processing method characterized in that while holding both flat portions and an end face orthogonal to each other of a work formed by laminating a plurality of polarizing films, an end face facing the held end face is ground.
請求項1に記載の端面加工方法において、
前記保持された端面と対向する互いに直交する2つの端面を略同時に研削することを特徴とする端面加工方法。
The end face processing method according to claim 1,
An end face processing method, characterized in that two mutually orthogonal end faces facing the held end face are ground substantially simultaneously.
積層された偏光膜の端面を研削加工する端面加工装置であって、
複数枚の偏光膜を積層してなるワークの互いに直交する端面を保持する一対の端面保持手段と、
ワークの平面部分を挟み込んで保持する一対の平面保持手段と、
端面保持手段によって保持された端面に対向する端面を研削する端面研削手段と
を備えたことを特徴とする端面加工装置。
An end face processing apparatus for grinding the end face of the laminated polarizing film,
A pair of end face holding means for holding mutually orthogonal end faces of a work formed by laminating a plurality of polarizing films,
A pair of flat holding means for sandwiching and holding the flat portion of the work,
An end surface grinding device for grinding an end surface facing the end surface held by the end surface holding device.
請求項3に記載の端面加工装置において、
前記端面研削手段を、互いに直交する2つの端面を略同時に研削するよう構成したことを特徴とする端面加工装置。
The end face processing device according to claim 3,
The end face grinding device is characterized in that the end face grinding means is configured to grind two mutually perpendicular end faces substantially simultaneously.
請求項3または請求項4に記載の端面加工装置において、
前記ワークの角部を研削する角部研削手段を備えたことを特徴とする端面加工装置。
In the end face processing apparatus according to claim 3 or 4,
An end face processing apparatus comprising a corner grinding means for grinding a corner of the work.
請求項3ないし請求項5のいずれかに記載の端面加工装置において、
前記平面保持手段を、連結された駆動手段によって同時に旋回して、挟み込み保持したワークを回転させるよう構成したことを特徴とする端面加工装置。
In the end face processing apparatus according to any one of claims 3 to 5,
An end face processing apparatus characterized in that the flat holding means is simultaneously turned by a driving means connected thereto to rotate the work held and held.
請求項3ないし請求項6のいずれかに記載の端面加工装置において、
前記研削手段がエンドミルであることを特徴とする端面加工装置。
In the end face processing apparatus according to any one of claims 3 to 6,
An end face processing apparatus, wherein the grinding means is an end mill.
JP2002317795A 2002-10-31 2002-10-31 End face processing method and apparatus Expired - Fee Related JP4175867B2 (en)

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WO2012101837A1 (en) * 2011-01-28 2012-08-02 新東工業株式会社 Grinding/polishing device for polygonal column member and grinding/polishing method
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KR20190027773A (en) 2016-07-22 2019-03-15 닛토덴코 가부시키가이샤 Polarizing plate manufacturing method and apparatus
KR20190027772A (en) 2016-07-22 2019-03-15 닛토덴코 가부시키가이샤 Method for manufacturing polarization plate and manufacturing device therefor
CN110412675A (en) * 2018-04-27 2019-11-05 住友化学株式会社 The manufacturing method of special-shaped polarizer
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Publication number Priority date Publication date Assignee Title
WO2012101837A1 (en) * 2011-01-28 2012-08-02 新東工業株式会社 Grinding/polishing device for polygonal column member and grinding/polishing method
JP5678898B2 (en) * 2011-01-28 2015-03-04 新東工業株式会社 Polygonal column member grinding / polishing apparatus and grinding / polishing method
CN103273335A (en) * 2013-05-25 2013-09-04 吴军红 Square milling clamping device
KR20190027773A (en) 2016-07-22 2019-03-15 닛토덴코 가부시키가이샤 Polarizing plate manufacturing method and apparatus
KR20190027772A (en) 2016-07-22 2019-03-15 닛토덴코 가부시키가이샤 Method for manufacturing polarization plate and manufacturing device therefor
CN110412675A (en) * 2018-04-27 2019-11-05 住友化学株式会社 The manufacturing method of special-shaped polarizer
CN110412675B (en) * 2018-04-27 2022-12-09 住友化学株式会社 Method for manufacturing special-shaped polarizing plate
JP2020149033A (en) * 2019-03-05 2020-09-17 住友化学株式会社 Method for manufacturing cut film

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