JP5047731B2 - Endless belt biaxial polishing machine and endless belt polishing method - Google Patents
Endless belt biaxial polishing machine and endless belt polishing method Download PDFInfo
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Description
本発明は、画像形成装置の中間転写ベルトや記録紙搬送ベルトなどに使用する無端ベルト状のゴム等のように、製造工程の成形によって得た厚さに僅かな無端ベルトを、特に均一で正確な所定の厚さが求められる無端ベルトに加工する二軸研磨機に関する。さらに詳しくは、本発明は、駆動軸及び従動軸の二軸が回転する研磨機であって、駆動軸と従動軸の間に無端ベルトを張架する着脱操作が簡単で、研磨機の回転を支持する研磨センターによる駆動軸の中心合わせが正確な研磨機に関する。 In the present invention, an endless belt having a slight thickness obtained by molding in a manufacturing process, such as an endless belt-like rubber used for an intermediate transfer belt or a recording paper conveyance belt of an image forming apparatus, is particularly uniform and accurate. The present invention relates to a biaxial polishing machine that processes an endless belt that requires a predetermined thickness. More specifically, the present invention is a polishing machine in which two axes of a drive shaft and a driven shaft rotate, and an attachment / detachment operation of stretching an endless belt between the drive shaft and the driven shaft is simple, and the polishing machine is rotated. The present invention relates to a polishing machine in which centering of a drive shaft by a supporting polishing center is accurate.
従来技術として、画像形成装置の中間転写ベルトや記録紙搬送ベルト等に使用する半導電性ゴムからなる均一で正確な厚さの無端ベルトを製造するために、駆動軸と従動軸の間に無端ベルトを張架し、駆動軸を動力源により回転させつつ、駆動軸に接して、駆動軸に並行に移動する回転砥石によって、駆動軸表面無端ベルトの表面を自動的に均一に研磨する二軸研磨機が知られている。無端ベルトの装着後の研磨操作は機械がスイッチ操作で自動的に遂行するが、研磨操作直前までの無端ベルトの着脱及び研磨機のセッティングまでの操作は、スイッチ操作で操作する自動的機械操作はなく、手作業で行なっている。
無端ベルトの研磨操作に関しては、下記の特許文献はあるが、無端ベルトの装着操作を改善する技術に関する文献は見当たらない。
現在使用されている無端ベルトの研磨機は、図６〜９に示すように、下記手順１〜５によって、無端ベルトのセッティングを行い手順６によって研磨加工を開始する。
図６〜９は、従来技術の研磨機の無端ベルトのセッティング及び研磨加工の手順を示す説明図であって、各セッティング段階における研磨機の構成部分である従動軸、駆動軸と従動軸の両端部に取り付けるベアリング、研磨時の駆動軸を固定する研磨センター、従動軸の片持ち端部を固定する従動軸固定部、従動軸の他端を支持する従動軸支持具、研磨砥石及び研磨機にセッティングする無端ベルトの垂直上方から見た配置図である。無端ベルトは幅広のリング状のゴム製無端ベルトの平面図であり、平面図上では長方形状に表れているが、リング状の帯ベルトであり、このリング状の内側が駆動軸及び従動軸の表面に接して装着されて循環回転する。
手順１
図６ａに示す両端が従動軸固定具と従動軸支持具によって支持されている二軸研磨機の従動軸の台座から従動軸支持具のある右側から、手作業によって、幅広の帯状リングのゴム製無端ベルトを平行移動させて、従動軸支持具を台座から浮かせて、無端ベルトのリングの中に従動軸支持具を潜らせるようにして、二軸研磨機の従動軸の中央部に無端ベルトの中央が来るまで移動して、図６ｂのようにセットする。
図６の従動軸固定具は、台座に接続固定されていて、従動軸を片持ち固定するものである。台座にしっかりと固定されているので、従動軸固定具の側から無端ベルトを従動軸に装着できない。
従動軸固定具としては、従動軸の端部に固定されているベアリングを固定する治具が使用され、該ベアリングの内径は従動軸の端部の直径が丁度嵌合する孔を有して、該ベアリングの外面リングを従動軸固定具が固定して、台座に接続している。
他方の従動軸支持具は、例えば、断面Ｌ字型形状として、回転軸を内面に保持したベアリングの外周面を２方向から所定の高さに台座面に支持して、従動軸固定具との併用で、従動軸の回転軸を台座と垂直方向に支持するものである。従動軸支持具は、従動軸を固定していないので、無端ベルト装着の際に、従動軸支持具のＬ字型から、従動軸のベアリングを浮かせて、その透き間から、無端ベルトを滑り込ませることができる。
手順２
図６ｂに示すように、従動軸にかけられた無端ベルトの右側から、手作業によって駆動軸を無端ベルトの輪の中に図７ａのように挿入する。
図７ａの状態の駆動軸は、研磨機から分離していて、駆動軸の位置を支持固定する治具は何もない。
手順３
図７ａの状態の駆動軸を、無端ベルトを二軸にかけた状態のままで、図７ｃのように、従動軸を回転中心にして、手作業によって、駆動軸を従動軸の上方を越えて研磨センターの方へ反転させて、図７ｂの状態にする。
手順４
駆動軸の両端には、円錐形状の凹部が設けられていて、図７ｂの駆動軸の凹部の中心に研磨機のセンターを強く差し込んで駆動軸の芯を研磨機のセンターに合わせて固定する。
手順５
断面Ｌ字型形状の従動軸支持具を従動軸の重量を下方から支持するように図８ｃのように回転させて、従動軸の支持が駆動軸からの張力に抗する形状にしてから、台座上の従動軸の位置をハンドル手動操作で図８ｂの矢印の方向に後退させて、無端ベルトを伸張させて無端ベルトの装着を完了する。
手順６
無端ベルトの装着完了後、駆動軸及び回転砥石を作動させる動力源のスイッチを入れて駆動軸の表面を循環する無端ベルトの研磨を移動可能な回転砥石によって、無端ベルトの研磨を開始し、所定の研磨加工を完了させる。
研磨完了した無端ベルトの脱離は、装着の手順の逆を辿って行う。
従来技術の研磨機においては、研磨操作のみは、スイッチ操作によって自動機械的に実施されているが、無端ベルトのセッティング操作手順は手作業で行われている。
無端ベルトの研磨加工における無端ベルトの回転速度は、複写機等に用いられている通常の無端ベルトの回転と相違して高速で回転する。そのために、正確な研磨加工においては、駆動軸の回転軸の円滑な回転が特に望まれる。駆動軸のわずかな振動も、駆動軸に接して研磨する砥石の圧力を変化させ、また無端ベルトの波打ち回転又は蛇行循環を起こす原因となり、無端ベルトの均一厚さへの研磨加工を妨げる。
無端ベルトの研磨機においては、高速回転における駆動軸の回転軸が安定した研磨機が望まれる。
Regarding the polishing operation of the endless belt, there is the following patent document, but there is no document relating to a technique for improving the mounting operation of the endless belt.
As shown in FIGS. 6 to 9, the endless belt polishing machine currently used sets the endless belt according to the following procedures 1 to 5, and starts the polishing process according to the procedure 6.
FIGS. 6 to 9 are explanatory diagrams showing the setting of the endless belt and the polishing process of the conventional polishing machine, and the driven shaft, the drive shaft and both ends of the driven shaft, which are constituent parts of the polishing machine in each setting stage. Bearing mounted on the part, polishing center for fixing the drive shaft during polishing, driven shaft fixing part for fixing the cantilevered end of the driven shaft, driven shaft support for supporting the other end of the driven shaft, grinding wheel and polishing machine It is the arrangement figure seen from the perpendicular upper part of the endless belt to set. The endless belt is a plan view of a wide ring-shaped rubber endless belt. Although the endless belt appears in a rectangular shape on the plan view, it is a ring-shaped belt belt, and the inner side of the ring shape is the drive shaft and the driven shaft. It is mounted in contact with the surface and circulates and rotates.
Step 1
The both ends shown in FIG. 6a are made of rubber of a wide band ring by hand from the right side of the driven shaft support from the pedestal of the driven shaft of the biaxial polishing machine supported by the driven shaft fixing tool and the driven shaft support. The endless belt is moved in parallel, the driven shaft support is lifted from the pedestal, and the driven shaft support is hidden in the ring of the endless belt, so that the endless belt is placed in the center of the driven shaft of the biaxial polishing machine. Move until the center comes and set as shown in Fig. 6b.
The driven shaft fixing tool in FIG. 6 is connected and fixed to a pedestal, and cantilevered the driven shaft. Since it is firmly fixed to the pedestal, an endless belt cannot be attached to the driven shaft from the side of the driven shaft fixture.
As the driven shaft fixing tool, a jig for fixing a bearing fixed to the end of the driven shaft is used, and the inner diameter of the bearing has a hole in which the diameter of the end of the driven shaft just fits, The outer ring of the bearing is fixed by a driven shaft fixture and connected to the base.
The other driven shaft support has, for example, an L-shaped cross section, and supports the outer peripheral surface of the bearing holding the rotating shaft on the inner surface on a pedestal surface at a predetermined height from two directions. In combination, the rotating shaft of the driven shaft is supported in a direction perpendicular to the pedestal. Since the driven shaft support does not fix the driven shaft, when the endless belt is mounted, the driven shaft bearing is lifted from the L shape of the driven shaft support, and the endless belt is slid through the gap. Can do.
As shown in FIG. 6b, the drive shaft is manually inserted into the ring of the endless belt as shown in FIG. 7a from the right side of the endless belt applied to the driven shaft.
The drive shaft in the state of FIG. 7a is separated from the polishing machine, and there is no jig for supporting and fixing the position of the drive shaft.
The drive shaft in the state of FIG. 7a is ground with the endless belt applied to the two shafts, and the drive shaft is ground over the driven shaft by manual operation with the driven shaft as the rotation center as shown in FIG. 7c. Invert toward the center to the state of FIG. 7b.
Step 4
At both ends of the drive shaft, conical recesses are provided, and the center of the polishing machine is firmly inserted into the center of the recess of the drive shaft in FIG. 7b so that the core of the drive shaft is aligned with the center of the polishing machine and fixed.
Step 5
The driven shaft support having an L-shaped cross section is rotated as shown in FIG. 8c so as to support the weight of the driven shaft from below, and the support shaft is made to resist the tension from the drive shaft. The position of the upper driven shaft is manually retracted in the direction of the arrow in FIG. 8b, and the endless belt is extended to complete the mounting of the endless belt.
Step 6
After the endless belt has been installed, the power source for operating the drive shaft and the rotating grindstone is turned on, and the endless belt is ground by the movable grindstone that can move the endless belt circulating around the surface of the drive shaft. Complete the polishing process.
Removal of the endless belt after completion of polishing is performed by reversing the installation procedure.
In the prior art polishing machine, only the polishing operation is automatically performed by a switch operation, but the setting operation procedure of the endless belt is manually performed.
The rotation speed of the endless belt in the endless belt polishing process is different from that of a normal endless belt used in a copying machine or the like, and rotates at a high speed. Therefore, smooth rotation of the rotating shaft of the drive shaft is particularly desired in accurate polishing. A slight vibration of the drive shaft also changes the pressure of the grinding wheel in contact with the drive shaft and causes the endless belt to be wavy or meandering, thereby hindering the endless belt from being polished to a uniform thickness.
In the endless belt polishing machine, a polishing machine in which the rotation shaft of the drive shaft at high speed is stable is desired.
従来技術として、無端ベルトを研磨する加工法として駆動軸と従動軸の二軸研磨軸を用いる二軸研磨がある。無端ベルトはリング状の形状であるために、研磨機へのセッティングの際には、研磨軸の少なくとも一方の端部は、研磨機から外してその透き間から無端ベルトを挿入する必要がある。
従って、二軸研磨加工法において、無端ベルトを装着するときに、研磨機から取り外した二つの研磨軸の回転軸の正確な固定、すなわち、軸センターを研磨機のセンター位置と正確に一致させる調整が不可欠である。そして、無端ベルトに適度の張力を付与するために、二軸間の距離の調整も必要となる。
無端ベルトのセッティングにおいて、これら調整が狂うと、研磨作業用中の二軸表面を循環する無端ベルトの面に波打ち現象が発生して、無端ベルトの精密な均一研磨を達成することはできない。
本発明は、軸センターを研磨機のセンター位置と正確に一致させる機械機構によって、正確な無端ベルトの研磨を達成することを第一の目的とする。
一方、研磨機に無端ベルトをセッティングする操作は手作業で行なっている。
本発明は、無端ベルトの駆動軸へのセッティング操作の最初の研磨軸への装着は手作業で行うが、その後のセッティング作業単位は正確な機械作業に任せることが可能として、二軸研磨機の作業効率を向上させることを第二の目的とする。
本発明では、二軸研磨における駆動軸固定と固定解除が自在の機構を導入し、軸センターを研磨機のセンター位置に正確にあわせることを可能にして、研磨軸角度の微妙な調整を不要とした。しかも、本発明のセンター位置の調整機構は、手作業による無端ベルトの回転軸への手作業による装着操作とこれに続く無端ベルトの研磨機への機械的操作によるセンター位置合わせの接続を円滑にして、研磨効率を大きく増大することができる。
本発明は、ゴム製の無端ベルトを駆動軸と従動軸の間に張架して、駆動軸により無端ベルトを回転させつつ、従動軸上を往復運動する研磨材により無端ベルトの表面を研磨する研磨機への無端ベルトを張架する装着操作が容易で、無端ベルトの装脱着以外の操作は、スイッチ操作によって自動的に機械操作でき、研磨時のブレが少ないので、無端ベルトが精度よく製造できる研磨機を提供することを目的としてなされたものである。
As a prior art, there is a biaxial polishing using a biaxial polishing shaft of a drive shaft and a driven shaft as a processing method for polishing an endless belt. Since the endless belt has a ring shape, at the time of setting in the polishing machine, it is necessary to remove at least one end of the polishing shaft from the polishing machine and insert the endless belt through the gap.
Therefore, in the biaxial polishing method, when the endless belt is mounted, the rotating shafts of the two polishing shafts removed from the polishing machine are accurately fixed, that is, the axis center is precisely aligned with the center position of the polishing machine. Is essential. And in order to give moderate tension to the endless belt, it is necessary to adjust the distance between the two axes.
If these adjustments go wrong in the setting of the endless belt, a wavy phenomenon occurs on the surface of the endless belt that circulates on the biaxial surface during polishing work, and precise endless polishing of the endless belt cannot be achieved.
The first object of the present invention is to achieve accurate endless belt polishing by a mechanical mechanism that accurately aligns the shaft center with the center position of the polishing machine.
On the other hand, the operation of setting the endless belt in the polishing machine is performed manually.
In the present invention, the setting operation to the drive shaft of the endless belt is manually performed on the first polishing shaft, but the subsequent setting operation unit can be left to an accurate machine operation. The second purpose is to improve work efficiency.
In the present invention, a mechanism that can freely fix and release the drive shaft in biaxial polishing is introduced, the shaft center can be accurately aligned with the center position of the polishing machine, and fine adjustment of the polishing shaft angle is unnecessary. did. In addition, the center position adjusting mechanism of the present invention facilitates manual connection operation of the endless belt to the rotating shaft and subsequent connection of center alignment by mechanical operation of the endless belt to the polishing machine. Thus, the polishing efficiency can be greatly increased.
The present invention stretches a rubber endless belt between a drive shaft and a driven shaft, and polishes the surface of the endless belt with an abrasive that reciprocates on the driven shaft while rotating the endless belt by the drive shaft. Installation operation to stretch the endless belt to the polishing machine is easy, and operations other than attaching and detaching the endless belt can be automatically operated by switch operation, and there is little blurring during polishing, so the endless belt can be manufactured with high accuracy It was made for the purpose of providing a polishing machine that can be used.
本発明者らは、上記の課題を解決すべく鋭意研究を重ねた結果、駆動軸を片持ち固定する支持具の構造を、機械的な押圧による「掴み−離し」が自在に変更できる押圧固定支持具を取り付け、手作業の無端ベルトの装着と、自動機械化手順の駆動軸と研磨センターの芯合せを円滑に遂行可能とすることによって、無端ベルトの装着操作を迅速にするととともに、自動機械化を可能にすることを目的とする。
すなわち、本発明は、
（１）ゴム製の無端ベルトを張架して回転する駆動軸と従動軸、及び、駆動軸の表面上において往復運動することにより無端ベルトを研磨する研磨砥石を有し、駆動軸の回転を保持する一対の研磨センター部と一対の研磨センターの軸方向に対して垂直方向に水平移動可能な台座を有する無端ベルトの二軸研磨機であって、駆動軸は、一方の軸端部は、駆動軸の固定と固定解除が自在の押圧固定具によって、台座の上に片持ち状態に固定されてなり、駆動軸の他方の端部は台座から遊離可能であり、従動軸は、従動軸固定具によって、台座に固定されてなり、従動軸の他端は、従動軸支持具によって、台座の従動軸固定具に対向する位置に設けた従動軸支持具に載置支持されてなり、台座は、研磨センターの位置の手前の無端ベルト装着作業位置から、研磨センターと駆動軸の中心合わせの位置までの間を移動させ、かつ停止させる機構を有し、研磨センターは、位置合わせ後の駆動軸の端部に研磨センターの円錐状先端を押し込み嵌合させる機構を有し、さらに、台座は、研磨センターの押し込み嵌合後に駆動軸から無端ベルトの張力を付与するために後退させる機構を有し、駆動軸の押圧固定具によって駆動軸を押圧固定したときの駆動軸の中心の位置が研磨センターの位置よりも低い位置であることを特徴とする無端ベルトの二軸研磨機、
（２）駆動軸の固定支持具を、押圧固定具に対向する台座の位置に設ける第１項に記載の無端ベルトの二軸研磨機、
（３）駆動軸の固定支持具を、研磨センター部の位置に設ける第１項に記載の無端ベルトの二軸研磨機、
（４）駆動軸の回転軸の位置の確定の直前又は直後の芯の位置が、研磨センターの芯の位置より０.１〜１０ｍｍ低い位置である第１〜３項のいずれかに記載の無端ベルトの二軸研磨機、
（５）台座の研磨センターと駆動軸の位置合わせの移動操作及び無端ベルト研磨センターの押し込み嵌合後に駆動軸から無端ベルトの張力を付与するための台座の後退操作並びに研磨センターの駆動軸への押し込み嵌合操作を、手動スイッチ操作で作動する自動機械機構を有する第１〜４項のいずれかに記載の無端ベルトの二軸研磨機、
（６）第１〜５項のいずれかに記載の二軸研磨機を用いて、台座に、押圧固定具によって片持ち状態に押圧固定された駆動軸及び従動軸固定具によって片持ち状態に固定された従動軸に、無端ベルトを、それぞれの研磨軸の遊離端側から挿入して二つの研磨軸に張架して、研磨センターの位置に駆動軸の中心が一致する位置まで台座を移動させて固定し、研磨センターの円錐状先端部を駆動軸の先端凹部に嵌合させて、駆動軸の回転軸の位置を確定し、駆動軸の回転軸の位置の確定の直前又は直後に押圧固定具の押圧を解除して、駆動軸の回転軸を研磨センターによって押圧固定具の中で、宙吊り状態で保持せしめたのち、駆動軸を動力源の動力によって回転させることを特徴とする無端ベルトの研磨方法、
を提供するものである。
As a result of intensive studies to solve the above problems, the present inventors have made it possible to change the structure of the support that cantilever-fixes the drive shaft so that “grabbing and releasing” by mechanical pressing can be freely changed. Attaching a support, attaching the endless belt manually, and smoothly aligning the drive shaft and polishing center in the automated mechanization procedure, speeds up the endless belt installation operation, and makes automatic mechanization possible. The purpose is to make it possible.
That is, the present invention
(1) A driving shaft and a driven shaft that are rotated by stretching an endless belt made of rubber, and a polishing grindstone that polishes the endless belt by reciprocating on the surface of the driving shaft. An endless belt biaxial polishing machine having a pair of polishing center portions to be held and a pedestal horizontally movable in a direction perpendicular to the axial direction of the pair of polishing centers, wherein the drive shaft has one shaft end portion The drive shaft is fixed in a cantilevered manner on the pedestal by a pressing fixture that can be fixed and unlocked freely. The other end of the drive shaft can be detached from the pedestal, and the driven shaft is fixed to the driven shaft. The other end of the driven shaft is placed and supported on a driven shaft support provided at a position facing the driven shaft fixing tool of the pedestal by the driven shaft support. , Wearing an endless belt in front of the polishing center It has a mechanism to move and stop between the position of the polishing center and the center of the drive shaft, and the polishing center pushes the conical tip of the polishing center into the end of the drive shaft after alignment The pedestal has a mechanism for retracting to apply tension of the endless belt from the drive shaft after the push-fit of the polishing center, and the drive shaft is pressed by a pressing fixture of the drive shaft. A biaxial polishing machine for an endless belt, wherein the center position of the drive shaft when fixed is lower than the position of the polishing center;
(2) The endless belt biaxial polishing machine according to item 1, wherein the driving shaft fixing support is provided at the position of the pedestal facing the pressing fixture,
(3) The endless belt biaxial polishing machine according to item 1, wherein the fixed support for the drive shaft is provided at the position of the polishing center.
(4) The endless according to any one of Items 1 to 3, wherein the position of the core immediately before or immediately after the determination of the position of the rotation axis of the drive shaft is a position lower by 0.1 to 10 mm than the position of the core of the polishing center. Belt biaxial polishing machine,
(5) Moving operation for aligning the polishing center of the pedestal with the drive shaft and pushing back the endless belt polishing center, the pedestal retracting operation for applying the tension of the endless belt from the drive shaft, and the polishing center driving shaft A biaxial polishing machine for an endless belt according to any one of claims 1 to 4, which has an automatic mechanical mechanism that is operated by a manual switch operation.
(6) Using the biaxial polishing machine according to any one of items 1 to 5, the pedestal is fixed in a cantilever state by a drive shaft and a driven shaft fixture that are pressed and fixed in a cantilever state by a press fixture. The endless belt is inserted into the driven shaft from the free end side of each polishing shaft and stretched on the two polishing shafts, and the pedestal is moved to the position where the center of the drive shaft coincides with the position of the polishing center. The conical tip of the polishing center is fitted into the recess of the tip of the drive shaft to determine the position of the rotation shaft of the drive shaft, and the pressure is fixed immediately before or after the determination of the position of the drive shaft. The endless belt is characterized in that the pressing of the tool is released, the rotating shaft of the driving shaft is held in a suspended state in the pressing fixture by the polishing center, and then the driving shaft is rotated by the power of the power source. Polishing method,
Is to provide.
本発明の無端ベルトの研磨方法及び研磨装置によれば、機械的な押圧による「掴み−離し」が自在に変更できる押圧固定支持具を駆動軸の片持ち固定に用いることによって、研磨機への無端ベルトを張架する装着操作が容易にかつ正確に実施でき、張架装着操作後の研磨機への無端ベルトのセッティング及び研磨終了後の無端ベルトのセッティング解除操作がスイッチ操作によって自動的に正確に実施できるので、研磨作業効率が大きく改善できる。
また、押圧固定支持具は、台座上に固定されていて、台座面に片持ち状態に駆動軸を保持できる。そして、押圧を解除した際の駆動軸の中心の高さより僅かに、低く設定することによって、駆動軸の回転に、押圧固定具が接触しないことによって、正確な駆動軸の回転を達成させることができて、無端ベルトの研磨において、波打ち現象を起こさない正確な研磨加工を実行できる。
また、本発明によれば、最初の無端ベルトの張架操作以外は、正確な機械動作に任せることができて、無端ベルトの研磨加工の効率工事用のみならず、正確な研磨加工を達成できる利点がある。
According to the polishing method and the polishing apparatus of the endless belt of the present invention, by using the pressing and fixing support that can freely change the “gripping and releasing” by mechanical pressing for cantilever fixing of the drive shaft, The endless belt tensioning operation can be performed easily and accurately, and the endless belt setting to the polishing machine after the tensioning operation and the endless belt setting release operation after polishing are automatically and accurately performed by the switch operation. Therefore, the polishing work efficiency can be greatly improved.
Further, the pressing and fixing support is fixed on the pedestal and can hold the drive shaft in a cantilevered state on the pedestal surface. Then, by setting the height slightly lower than the center height of the drive shaft when the pressure is released, the rotation of the drive shaft is prevented from coming into contact with the rotation of the drive shaft, thereby achieving accurate rotation of the drive shaft. In addition, in the polishing of the endless belt, it is possible to execute an accurate polishing process that does not cause a undulation phenomenon.
In addition, according to the present invention, except for the initial endless belt stretching operation, it can be left to accurate machine operation, and not only for efficient construction of endless belt polishing, but also accurate polishing can be achieved. There are advantages.
本発明の無端ベルトの二軸研磨装置は、ゴム製の無端ベルトを張架する駆動軸と従動軸、及び、駆動軸の表面上において軸に沿って並行に往復運動することにより無端ベルトを研磨する研磨砥石を有する無端ベルトの研磨装置であって、図１〜５に示すような本発明の手順１〜７によって、研磨機への無端ベルトのセッティング及び研磨操作を行なうことができる。
図１〜４に用いる二軸研磨機は、対向する一対の研磨センター、研磨砥石部、台座移動用のレール機構及び動力源が搭載された研磨センター本体部分と、表面に駆動軸の押圧固定部、従動軸固定部を備えた底部にレール機構がある台座及び該台座の固定具に固定される駆動軸と従動軸からなる。
図１〜４は、本発明の研磨機のセッティング手順を示す説明図であって、従動軸、駆動軸、研磨時の駆動軸を固定する研磨センター、従動軸の片持ち端部を固定する従動軸固定部、従動軸の他端を支持する従動軸支持具、駆動軸の片持ち端部を固定する押圧固定部、駆動軸の他端を支持する駆動軸支持具、研磨砥石及び研磨機にセッティングする無端ベルトの垂直上方から見た配置図である。駆動軸の他端を支持する駆動軸支持具は、台座上に設置する場合と図１のように研磨センターの前に設置する態様を採用することができる。
従動軸固定部、従動軸支持具及び駆動軸の押圧固定部は、台座の上に所定の高さで固定することができる。該台座全体は、例えば台座の底面にレール機構によって、研磨センターの方に平行移動させることができる。
前記従来技術には、駆動軸の押圧固定部及び駆動軸支持具並びに研磨センターの方に並行移動する台座機構がない。
本発明の特徴的構成である駆動軸の押圧固定部としては、例えば、図１ａに示すような駆動軸を収納するハウジングと、先端傾斜面付き押圧棒からなり、駆動軸のベアリングを左側からの押圧棒の押圧力によって、ハウジング内面に押し付け、押圧固定部のハウジング内面に駆動軸のベアリングをしっかりと固定する固定部を使用することができる。本発明に用いる押圧固定具の構造としては、図５の略図断面図で示す押圧作用機構の押圧固定具によって駆動軸のベアリングを固定及び固定解除できる態様を採用できる。すなわち、駆動軸のベアリングの円周を２面以上で支える内面を有するハウジングと、ベアリングの円周に押圧をかけて、ハウジング内面にベアリングを固定する押圧機構と押圧を解除したときに、ベアリングを支持していたハウジングの内面から僅かに浮き上がる構造であれば、本発明の押圧固定具として、使用することができる。
The endless belt biaxial polishing apparatus of the present invention polishes an endless belt by reciprocating along the axis on the surface of the drive shaft and driven shaft that stretches the endless belt made of rubber and the drive shaft. An endless belt polishing apparatus having a polishing grindstone to perform the setting of the endless belt to the polishing machine and the polishing operation can be performed by procedures 1 to 7 of the present invention as shown in FIGS.
1-4 includes a pair of opposing polishing centers, a polishing grindstone unit, a polishing center main body portion on which a rail mechanism for moving a pedestal and a power source are mounted, and a pressing fixing portion for a drive shaft on the surface. The pedestal includes a pedestal having a rail mechanism at the bottom provided with a driven shaft fixing portion, and a drive shaft and a driven shaft fixed to the fixture of the pedestal.
1 to 4 are explanatory views showing the setting procedure of the polishing machine of the present invention, in which a driven shaft, a drive shaft, a polishing center for fixing the drive shaft during polishing, and a driven for fixing the cantilevered end of the driven shaft. A shaft fixing portion, a driven shaft support that supports the other end of the driven shaft, a pressure fixing portion that fixes the cantilevered end of the drive shaft, a drive shaft support that supports the other end of the drive shaft, a grinding wheel, and a polishing machine It is the arrangement figure seen from the perpendicular upper part of the endless belt to set. The drive shaft support that supports the other end of the drive shaft can be installed on a pedestal or in front of the polishing center as shown in FIG.
The driven shaft fixing portion, the driven shaft support, and the driving shaft pressing and fixing portion can be fixed at a predetermined height on the pedestal. The entire pedestal can be translated toward the polishing center by a rail mechanism on the bottom surface of the pedestal, for example.
The prior art does not have a pedestal mechanism that moves in parallel toward the pressing and fixing portion of the drive shaft, the drive shaft support, and the polishing center.
The pressing and fixing portion of the drive shaft, which is a characteristic configuration of the present invention, includes, for example, a housing for storing the drive shaft as shown in FIG. 1a and a pressure rod with a tip inclined surface. A fixing portion that presses against the inner surface of the housing by the pressing force of the pressing rod and firmly fixes the bearing of the drive shaft to the inner surface of the housing of the pressing fixing portion can be used. As a structure of the pressing fixture used in the present invention, a mode in which the bearing of the drive shaft can be fixed and released by the pressing fixture of the pressing mechanism shown in the schematic sectional view of FIG. That is, a housing having an inner surface that supports the circumference of the bearing of the drive shaft by two or more surfaces, a pressing mechanism that presses the bearing circumference to fix the bearing to the inner surface of the housing, and the pressure is released. Any structure that floats slightly from the inner surface of the supporting housing can be used as the pressing fixture of the present invention.
本発明の押圧固定部は、駆動軸を片持ち状態に保持して、台座に固定されていて、無端ベルトは、押圧固定部の側から嵌めることはできない。
駆動軸支持具は、台座の上に固定することもでき、図１のように、右側の研磨センターの前に設置しておくこともできる。
駆動軸支持具は、駆動軸の右側の端のベアリングを支持するものであり、駆動軸の右側のベアリングに懸かる重力を水平方向への移動を制限する形状で支持するものであれば、特に制限なく使用することができる。
この駆動軸支持具の上のベアリングを持ち上げて、支持具とベアリングとの透き間に無端ベルトを通過させて、駆動軸に無端ベルトを装着することができる。
本発明の従動軸固定部、従動軸支持具、駆動軸の押圧固定部、駆動軸支持具は、移動可能な台座の上に固定することができる。ただし、駆動軸支持具のみは、所望によって、台座から分離して、右側の研磨センターの前に設けて置く方が、駆動軸の芯合わせ操作に便利である。
本発明においては、図１の状態に配置された研磨機の台座の上の片持ち状態で保持されている駆動軸及び従動軸の状態に、次の手順で無端ベルトのセッティングを行う。
手順１
本願発明の研磨機への無端ベルトのセッティングは、図１ａの配置図に示す研磨機の状態から開始される。すなわち、駆動軸は、台座の上にある駆動軸の押圧固定具に、駆動軸の左のベアリングを図１左上図の断面図のように挿入して片持ち状態で押圧固定されている。従動軸の左のベアリングを図１右下図のように台座に片持ち状態に固定し、右側のベアリングは、従動軸支持具の上に載置して配置されている。
台座は、図１ａに示すように、研磨センターの手前の無端ベルト装着作業位置に停止させている。
手順２
図１ａの台座の上に左側が固定部により固定されている駆動軸及び従動軸の右側のベアリングを持ち上げて、駆動軸及び従動軸の両方の表面に無端ベルトを図１ｂのように被せる。
The press fixing portion of the present invention holds the drive shaft in a cantilever state and is fixed to the pedestal, and the endless belt cannot be fitted from the side of the press fixing portion.
The drive shaft support can be fixed on the pedestal, and can also be installed in front of the right polishing center as shown in FIG.
The drive shaft support is intended to support the bearing at the right end of the drive shaft, and is particularly limited as long as it supports the gravity suspended by the right bearing of the drive shaft in a shape that restricts movement in the horizontal direction. It can be used without.
The endless belt can be mounted on the drive shaft by lifting the bearing on the drive shaft support and allowing the endless belt to pass between the support and the bearing.
The driven shaft fixing portion, the driven shaft support, the drive shaft pressing and fixing portion, and the drive shaft support of the present invention can be fixed on a movable base. However, it is convenient for the centering operation of the drive shaft that only the drive shaft support is separated from the pedestal and provided in front of the right polishing center if desired.
In the present invention, the endless belt is set in the following procedure to the state of the drive shaft and the driven shaft held in a cantilever state on the base of the polishing machine arranged in the state of FIG.
Step 1
The setting of the endless belt to the polishing machine of the present invention starts from the state of the polishing machine shown in the layout diagram of FIG. 1a. That is, the drive shaft is pressed and fixed in a cantilever state by inserting the left bearing of the drive shaft into the pressing fixture of the drive shaft on the pedestal as shown in the cross-sectional view of the upper left diagram of FIG. The left bearing of the driven shaft is fixed to the pedestal in a cantilevered state as shown in the lower right diagram of FIG. 1, and the right bearing is placed on the driven shaft support.
As shown in FIG. 1a, the pedestal is stopped at the endless belt mounting work position in front of the polishing center.
The bearing on the right side of the drive shaft and the driven shaft whose left side is fixed by the fixing portion on the pedestal of FIG. 1a is lifted, and the endless belt is put on the surfaces of both the drive shaft and the driven shaft as shown in FIG. 1b.
手順３
図１ｂの状態の駆動軸及び従動軸を、図２ａに示すように台座（点線で示す）ごと移動させて、研磨センターの方向に、駆動軸のセンターとほぼ一致する位置まで水平移動させて図２ｂの状態にする。
このとき、駆動軸の右側のベアリングは、図２ｂに示すように、駆動軸支持具の上に駆動軸の重量を支えて載置されている。図２の研磨機の場合には、駆動軸支持具は、研磨センターの直前の固定位置に設けてあり、駆動軸の右側のベアリングは、図２ｂの位置に移動させたときに、駆動軸の右側のベアリングを載置する。駆動軸支持具は、左側の駆動軸の押圧固定具の対向する台座の位置に固定して設けることもできる。
手順３の台座の移動は、研磨センターの位置まで、正確に移動できる機械動作に任せることが容易である。
この位置合わせにおいては、通常は、研磨センターの芯が、駆動軸の芯と研磨センターの位置は完全一致させるのが通例である。しかし、本発明の場合は、垂直上方向から見た研磨センターの芯の位置は、台座の停止位置を研磨センターの位置に対応して固定して一致させるが、上下垂直方向の研磨センターの芯の位置は、駆動軸の芯よりも低くずらせている。例えば０.１〜５ｍｍ、特に０.２〜２ｍｍ低くずらすことが好ましい。
この研磨センターの上下垂直方向のずれは、手順４の通り、駆動軸の回転時に駆動軸のベアリングを、押圧固定具の押圧を解除したときに、固定具に接触しないで駆動軸を宙吊り状態で回転させる効果を与える。
The drive shaft and driven shaft in the state of FIG. 1b are moved together with the pedestal (shown by a dotted line) as shown in FIG. 2a, and moved horizontally in the direction of the polishing center to a position substantially coincident with the center of the drive shaft. 2b is set.
At this time, as shown in FIG. 2B, the bearing on the right side of the drive shaft is placed on the drive shaft supporter while supporting the weight of the drive shaft. In the case of the polishing machine of FIG. 2, the drive shaft support is provided at a fixed position immediately before the polishing center, and when the bearing on the right side of the drive shaft is moved to the position of FIG. Place the right bearing. The drive shaft support can be fixedly provided at the position of the pedestal facing the pressing fixture of the left drive shaft.
It is easy to leave the movement of the pedestal in
In this alignment, usually, the core of the polishing center is usually perfectly aligned with the position of the core of the drive shaft and the polishing center. However, in the case of the present invention, the position of the center of the polishing center as viewed from above in the vertical direction is matched with the stop position of the pedestal corresponding to the position of the polishing center. The position is shifted lower than the core of the drive shaft. For example, it is preferable to shift by 0.1 to 5 mm, particularly 0.2 to 2 mm.
The vertical deviation of the polishing center is as shown in Step 4. When the drive shaft is rotated, the drive shaft bearing is not in contact with the fixing tool when the driving shaft is released. Gives a rotating effect.
手順４
手順３の位置合わせ終了後、図３に示すように、円錐状の研磨センターを左右から押し出して、駆動軸の先端の円錐状凹部に、嵌合させて駆動軸の回転軸の中心を固定する。
駆動軸の回転軸の固定と同時又は直前若しくは直後に、図３ａ左の上図に示すように、押圧固定具の押圧棒を左に移動して駆動軸のベアリングへの押圧固定を解除する。
このとき、手順４の研磨センターの押出しによる駆動軸の回転軸の中心を固定によって、駆動軸の左のベアリングは、図３ｂの左図に示すように、押圧固定具のハウジングの中で、僅かな空間を形成して、宙吊り状態となる。一方、駆動軸の右側のベアリングも、駆動軸支持具の表面から僅かに宙吊り状態に浮き上がる。
図３ｂの下には、回転軸の研磨センターによる完全固定の直前に、押圧固定具の押圧棒の押圧を解除した場合の説明図を示している。この場合、研磨センターの先端は、僅かに、駆動軸の押圧固定部による固定軸の芯の高さより僅かに低い位置、例えば、駆動軸の芯より０.１〜５ｍｍ好ましくは０.２〜２ｍｍ低い位置に来るように、押圧固定具のハウジングの構造若しくは研磨センターの位置が設計されている。そして、この説明図に示されているように、押圧固定具の押圧を解除したのち、研磨センターの先端を完全に駆動軸の円錐形状の凹部に嵌合させると、駆動軸の両端のベアリングは、ハウジングの中で０.１〜５ｍｍの高さで宙に浮く。
この中吊りの高さが、０.１ｍｍ未満では、駆動軸の回転が、押圧固定具のハウジングの内面に接触して、駆動軸の回転を阻害する恐れがあり、５ｍｍを超えると、ハウジングと駆動軸の間隔が増大することにより押圧固定力の減少及び緩みを来たし、押圧固定具の押圧力の解除と締め付けの操作に時間がかかり望ましくない。
回転軸の完全固定の直後に、押圧棒の押圧を解除した場合は、研磨センターによる駆動軸の左側のベアリングを宙に浮かせる力は、駆動軸の変形弾力として蓄積されていて、押圧固定具の押圧の解除とともに、駆動軸の左のベアリングが、上記と同様の状態にハウジングの中で、０.１〜５ｍｍの高さの間隔で宙吊りとなる。
Step 4
After completion of the alignment in
Simultaneously with the fixing of the rotating shaft of the drive shaft, or immediately before or after, the pressing rod of the pressing fixture is moved to the left to release the pressing and fixing of the driving shaft to the bearing, as shown in the upper diagram of FIG.
At this time, the center of the rotation shaft of the drive shaft is fixed by pushing out the polishing center in step 4, so that the left bearing of the drive shaft is slightly in the housing of the press fixture as shown in the left diagram of FIG. 3b. A simple space is formed and it is suspended. On the other hand, the bearing on the right side of the drive shaft is also slightly suspended from the surface of the drive shaft support.
Below FIG. 3 b, there is shown an explanatory diagram in the case where the pressing of the pressing rod of the pressing fixture is released immediately before the rotation shaft is completely fixed by the polishing center. In this case, the tip of the polishing center is slightly lower than the height of the core of the fixed shaft by the pressing and fixing portion of the drive shaft, for example, 0.1 to 5 mm, preferably 0.2 to 2 mm from the core of the drive shaft. The structure of the housing of the pressing fixture or the position of the polishing center is designed so as to come to a low position. Then, as shown in this explanatory diagram, after releasing the pressing of the pressing fixture, when the tip of the polishing center is completely fitted into the conical recess of the driving shaft, the bearings at both ends of the driving shaft are Float in the housing at a height of 0.1-5 mm.
If the height of the inner suspension is less than 0.1 mm, the rotation of the drive shaft may come into contact with the inner surface of the housing of the pressing fixture, and the rotation of the drive shaft may be hindered. An increase in the distance between the drive shafts causes a decrease and loosening of the pressing fixing force, and it takes time to release and tighten the pressing force of the pressing fixture, which is not desirable.
If the pressing rod is released immediately after the rotation shaft is completely fixed, the force that causes the bearing on the left side of the driving shaft to float in the air by the polishing center is accumulated as the deformation elasticity of the driving shaft. Along with the release of the pressure, the left bearing of the drive shaft is suspended in the housing in the same state as described above at intervals of 0.1 to 5 mm in height.
手順５
手順４において、研磨センターを駆動軸の両端部に完全嵌合させた後、従動軸の左側は台座に接続されている従動軸固定具によって台座に固定されている。そして従動軸の右側のベアリングは、駆動軸からの無端ベルトの張力に抗して、回転軸を維持するように従動軸支持具の形状を採用する。例えば、断面Ｌ字型形状（図３の右下図）又は上方が開放されたコの字型の治具にして、駆動軸からの無端ベルトの張力が懸かる方向に抗する形状にすることができる。
図５の状態では、駆動軸は、両端を研磨センターで、所定の回転軸の位置に正確に保持されている。
手順６
この図３ａ又は図３ｂの状態の駆動軸に対して、従動軸を台座ごと、図４ａのように、適切な無端ベルトの張力になるまで駆動軸に対して後退移動させて、無端ベルトのセッティングは完了する。
このとき、台座は、所定の張力に応じて、任意の正確な位置に停止固定することができる。この台座の移動も無端ベルトの張力に応じて自動的に停止する機械動作にすることが正確な張力を設定できるので望ましい。
手順７
図３ａによって、セッティングを完了したのち、研磨機の研磨開始のスイッチを入れて図３ａのように、研磨砥石を駆動軸の軸方向に厚さを計測しながら左右移動させて、均一かつ正確な無端ベルトの研磨を遂行する。
研磨済みの無端ベルトは、上記手順を逆に辿って、脱離させることができる。
また、本発明の研磨機の従動軸として、中央部の直径が一定の円筒形であり、中央部から端部にかけて次第に直径が減少する従動軸を採用することができる。
この従動軸によって、研磨時の無端ベルトの蛇行を減少させることができるので好ましい。
本発明の無端ベルトの研磨装置においては、従動軸の直径が一定である中央部の長さが、従動軸の有効軸長の０.１〜０.５倍であることが好ましく、０.１５〜０.３５倍であることがより好ましい。ここに、有効軸長とは、従動軸のベアリング基部を除く両端間の距離である。従動軸の直径が一定である中央部の長さが従動軸の有効軸長の０.１倍未満であると、無端ベルトにヨレが発生するおそれがある。従動軸の直径が一定である中央部の長さが従動軸の有効軸長の０.５倍を超えると、無端ベルトの蛇行が大きくなるおそれがある。
Step 5
In step 4, after the polishing center is completely fitted to both ends of the drive shaft, the left side of the driven shaft is fixed to the pedestal by a driven shaft fixing tool connected to the pedestal. The right bearing of the driven shaft adopts the shape of the driven shaft support so as to maintain the rotating shaft against the tension of the endless belt from the drive shaft. For example, an L-shaped cross section (lower right diagram in FIG. 3) or a U-shaped jig with an open top can be formed to resist the direction in which the tension of the endless belt from the drive shaft is applied. .
In the state of FIG. 5, the drive shaft is accurately held at the position of a predetermined rotation shaft with both ends being a polishing center.
Step 6
With respect to the drive shaft in the state of FIG. 3a or FIG. 3b, the driven shaft is moved back together with the pedestal until the appropriate endless belt tension is obtained as shown in FIG. Is completed.
At this time, the pedestal can be stopped and fixed at an arbitrary accurate position according to a predetermined tension. It is desirable that the movement of the pedestal is a mechanical operation that automatically stops according to the tension of the endless belt because an accurate tension can be set.
After completing the setting as shown in FIG. 3a, the polishing machine is turned on and the polishing wheel is moved left and right while measuring the thickness in the axial direction of the drive shaft as shown in FIG. 3a. Perform endless belt polishing.
The ground endless belt can be detached by following the above procedure in reverse.
Further, as the driven shaft of the polishing machine of the present invention, it is possible to adopt a driven shaft that has a constant diameter at the center and gradually decreases in diameter from the center to the end.
This driven shaft is preferable because meandering of the endless belt during polishing can be reduced.
In the endless belt polishing apparatus of the present invention, the length of the central portion where the diameter of the driven shaft is constant is preferably 0.1 to 0.5 times the effective shaft length of the driven shaft, and 0.15. It is more preferable to be -0.35 times. Here, the effective shaft length is the distance between both ends excluding the bearing base of the driven shaft. If the length of the central portion where the diameter of the driven shaft is constant is less than 0.1 times the effective shaft length of the driven shaft, the endless belt may be twisted. If the length of the central portion where the diameter of the driven shaft is constant exceeds 0.5 times the effective shaft length of the driven shaft, the endless belt may be meandered.
Claims (6)
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| Application Number | Priority Date | Filing Date | Title |
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| JP2007213804A JP5047731B2 (en) | 2007-08-20 | 2007-08-20 | Endless belt biaxial polishing machine and endless belt polishing method |
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| JP2007213804A JP5047731B2 (en) | 2007-08-20 | 2007-08-20 | Endless belt biaxial polishing machine and endless belt polishing method |
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| JP2009045693A JP2009045693A (en) | 2009-03-05 |
| JP5047731B2 true JP5047731B2 (en) | 2012-10-10 |
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