200936308 六、發明說明： 【發明所屬之技術領域】 本發明是有關於將透鏡的表面加工用的透鏡加工裝 置。 【先前技術】 透鏡表面的加工方法，是已知奧斯卡（Oscar )式、 ❹ 斜軸式、球心擺動式、行星擺動式等的各種的方法。習知 是依據透鏡的形狀、材質等選擇這些的加工方法之中的最 適合的加工方法，使用對應被選擇的加工方法的專用的透 鏡加工裝置進行透鏡表面的加工。在專利文獻1中，被提 案由利用凸輪及凸輪滾子的學習凸輪式將透鏡表面加工的 球心擺動式的加工方法。 [專利文獻1]日本特開2004- 1 7 1 66號公報 〇 【發明內容】 (本發明所欲解決的課題） 習知，爲了選擇各種的加工方法之中的最適合的加工 方法，使用對應被選擇的加工方法的專用的透鏡加工裝置 進行透鏡表面的加工，所以需要依據透鏡的形狀等個別準 備各式各樣的方式的透鏡加工裝置。因此，需要大額的設 備費和大的設置空間，而具有經濟性欠佳的問題。 且，習知的球心擺動式的透鏡加工裝置，除了上述的 學習凸輪式以外，雖具有支點支撐式，但是在支點支撐式 -5- 200936308 中在構造上可以加工的曲面有限制。對於此，在學習凸輪 式中，因爲需要依據加工的曲面交換凸輪，所以在加工準 備上很花時間，整體的作業效率差。且，由凸輪的摩耗所 産生的遊動、凸輪表面的污垢、異物的嚙入凸輪面的等發200936308 VI. Description of the Invention: [Technical Field of the Invention] The present invention relates to a lens processing apparatus for processing a surface of a lens. [Prior Art] Various methods of processing the surface of the lens are known as an Oscar type, a skew type, a spherical swing type, a planetary swing type, and the like. Conventionally, the most suitable processing method is selected depending on the shape and material of the lens, and the lens surface is processed using a dedicated lens processing apparatus corresponding to the selected processing method. Patent Document 1 proposes a method of machining a spherical center of a lens surface by a learning cam type using a cam and a cam roller. [Patent Document 1] Japanese Laid-Open Patent Publication No. 2004-197A No. 2004-A. SUMMARY OF THE INVENTION (Problems to be Solved by the Invention) Conventionally, in order to select an optimum processing method among various processing methods, use corresponding Since the dedicated lens processing apparatus of the selected processing method performs the processing of the lens surface, it is necessary to individually prepare various types of lens processing apparatuses in accordance with the shape of the lens or the like. Therefore, a large amount of equipment costs and a large installation space are required, and there is a problem of economical disadvantage. Further, the conventional spherical swing type lens processing apparatus has a fulcrum support type in addition to the above-described learning cam type, but the surface which can be machined in the fulcrum support type -5 - 200936308 is limited. In this case, in the learning cam type, since it is necessary to exchange the cam according to the curved surface of the machining, it takes a lot of time to prepare the machining, and the overall work efficiency is poor. Moreover, the movement caused by the wear of the cam, the dirt on the surface of the cam, and the engagement of the foreign matter into the cam surface
生的話，因爲凸輪滾子會被限制，所以無法維持透鏡加X 具的軌道精度。因此，有需要定期進行凸輪的檢點、維 修、交換等，在維持管理需要很多的費用及時間。進一 步，因爲必需配合被加工的透鏡的曲面，準備多種類的凸 _ ❹ 輪，所以在設備需要大額的費用。除此之外，使用的凸輪 因爲是大型且重，所以凸輪交換不容易。且，在凸輪交換 時，因爲具有凸輪落下等的危險，所以也需要凸輪交換用 的特別的裝置。進一步’依據凸輪的安裝狀態會使加工誤 差發生，而也有加工精度的再現性差的問題。 進一步，無論是支點支撐式及學習凸輪式，皆有需要 依據被加工的透鏡的曲面，將加工具的刃尖位置高精度地 調整。因此，在調整上需要特殊技術’且，也需要很多的 ◎ 調整時間。 本發明的課題是提案一種透鏡加工裝置’將進行透鏡 的加工的透鏡加工具，不利用凸輪機構，就可沿著任意的 軌跡精度佳地移動，可藉由各種的加工方式將透鏡表面加 工。 (用以解決課題的手段） 爲了解決上述的課題，本發明的透鏡加工裝置是具備 -6- 200936308 以下的結構特徴。 又，刮號內的符號是如後述的實施例，爲了容易理解 而附加，本發明不限定於實施例。 即，本發明的透鏡加工裝置（1)，其特徵爲，具 有：中心軸線（2a)是被配置成朝預先決定的Z軸的方向 延伸的狀態的透鏡支架（7)、及將被保持在前述透鏡支 架（7)的透鏡（6)加工用的透鏡加工具（8)、及在與 〇 前述透鏡支架（7)的中心軸線（2a)平行的平面內形成 前述透鏡加工具（8 )的旋轉中心軸線（3 a )的狀態下將 前述透鏡加工具（8)移動用的移動機構（10)，前述移 動機構（10)，是具備：將前述透鏡加工具（8)朝該透 鏡加工具（8)的旋轉中心軸線（3a)的方向直線往復移 動用的第1驅動機構（30)、及將前述第1驅動機構 (30)支撐的支撐構件（31)、及在以與前述平面垂直的 Y軸平行的第1軸線（41a)爲中心可旋轉的狀態下與前 © 述支撐構件（31)連結的第1支軸（41)、及在從前述支 撐構件（31)中的前述第1支軸（41)遠離Z軸的方向的 位置朝接近及遠離前述第1支軸（41)的方向可直線往復 移動並且在以與Y軸平行的第2軸線（42a )爲中心可旋 轉的狀態下與前述支撐構件（31)連結的第 2支軸 (42)、及將前述第1支軸（41)朝與Y軸及Z軸垂直的 X軸的方向直線往復移動用的第2驅動機構（50)、及將 前述第2支軸（42)朝X軸的方向直線往復移動用的第3 驅動機構（60)。 200936308 在本發明的透鏡加工裝置的移動機構中，藉由第2驅 動機構朝X軸方向可移動的第1支軸是在可旋轉的狀態與 支撐構件連結’藉由第3驅動機構可個別朝X軸方向移動 的第2支軸是對於支撐構件可旋轉並且對於第1支軸朝接 近及遠離方向可移動的狀態下連結。因此，將第1支軸及 第2支軸朝X軸方向個別移動的話，會隨此支撐構件朝與 Y軸平行的軸線周圍繞轉，被搭載於支撐構件的第1驅動 機構也一起繞轉。此結果，被搭載於第1驅動機構的透鏡 ❹ 加工具的旋轉中心軸線是成爲對於透鏡支架的中心軸線 (Z軸）傾斜的狀態。因此，藉由第1驅動機構將透鏡加 工具在其旋轉中心軸線的方向移動動作的話，藉由第2及 第3驅動機構與將透鏡加工具的方向變更的動作連動，就 可以將透鏡加工具沿著各種的移動軌跡移動。 例如前述移動機構，可以使用以前述透鏡支架的中心 軸線上的點爲中心將前述透鏡加工具擺動用的擺動機構， 就可以實現對應球心擺動式的透鏡加工。且，藉由將第1 @ 〜第3驅動機構個別控制將透鏡加工具移動至預定的位置 固定，就可以由對應習知的斜軸方式的加工方法進行透鏡 表面加工。因此，多種的加工方式的加工，因爲可以由1 台的透鏡加工裝置進行，所以可以實現汎用性較高的透鏡 加工裝置，可以削減設備費用和設置空間。 且，在本發明的移動機構中，使用進行直線往復移動 的第1〜第3驅動機構實現透鏡加工具的擺動運動等。這 種驅動機構因爲可以藉由具備線性導引、載置台等的剛性 -8 - 200936308 的較高的機構構成，所以透鏡加工具的移動軌跡成爲可長 時間、高精度地維持。因此，可以消解學習凸輪式等的球 心擺動式的精度維持的問題。 進一步，本發明的移動機構因爲未使用凸輪機構，所 以也可以消解凸輪交換的問題及必需準備各種凸輪的問 題。 在此，本發明的透鏡加工裝置的移動機構，是具備將 φ 前述透鏡加工具朝Y軸方向直線往復移動用的第4驅動機 構，前述第4驅動機構是被搭載於前述第1驅動機構較 佳。藉由第4驅動機構將透鏡加工夾具定位在Y軸的方向 中的任意的位置，對於此位置藉由第1〜第3驅動機構將 透鏡加工具在與其旋轉中心軸線平行的平面上可以進行擺 動等的任意的運動。因此，可以由對應習知的奧斯卡式的 加工方法進行透鏡表面的加工。 © [發明的效果] 在本發明的透鏡加工裝置中，進行透鏡的加工的透鏡 加工具，不利用凸輪機構，就可沿著多樣的軌跡移動。因 此，對於習知需要多種的透鏡加工裝置的透鏡加工因爲可 以集約於1台，所以可以削減設備投資、設置空間、利用 率低的機械。 且，在凸輪交換等的加工準備所需要時間因爲也可以 大幅地削減所以作業效率可以改善。因爲不需要使用重的 凸輪機構，所以不需要凸輪交換等的作業而安全性提高， -9- 200936308 即使女性等的非勞力的作業員，也不需要使用特別的裝 置，就可以進行加工的準備。 進一步，第1〜第4驅動機構因爲是進行具有導引和 載置台等的剛性較高的直線往復運動的機構，所以可以由 振動不會發生的方式移動透鏡加工具。因此，將透鏡加工 具的移動軌跡可以長時間精度佳地保持，可以實現信賴性 較高的加工。 【實施方式】 以下，參照圖面，說明適用本發明的透鏡加工裝置的 實施例。 第1圖是顯示本實施例的透鏡加工裝置的主要部的槪 略構成的立體圖。透鏡加工裝置1，是具有：上軸組件 2、及被配置於上軸組件2的下方的下軸組件3、及由進行 透鏡加工裝置1的各種的控制的微電腦等所構成的控制部 4。上軸組件2，是具備將表面加工用的透鏡6保持用的透 ❹ 鏡支架7，下軸組件3，是具備將被保持在透鏡支架7的 透鏡6加工用的透鏡加工具8。 上軸組件2，是具備：透鏡支架7可裝卸地被安裝於 下端的支架軸7a、及將支架軸7a在可旋轉自如的狀態下 支撐的支撐套筒11、及支撐套筒11被固定並朝上下方向 可移動的移動塊體12、及將移動塊體12朝上下方向導引 用的導引軌道13。移動塊體12，是沿著導引軌道13，藉 由給進螺絲1 5移動。給進螺絲1 5是藉由伺服馬達16被 -10- 200936308 旋轉驅動。支架軸7a，是藉由彈簧17朝下方推迫，成爲 可以藉由調整螺絲1 8調整彈簧1 7的加壓力。可取代彈簧 17，藉由重錘、氣壓汽缸或是油壓汽缸將支架軸7a朝下 方向推迫也可以。 透鏡支架7，是將透鏡6的加工面朝向下側的方式保 持透鏡6。例如，透鏡支架7，是藉由省略圖示的挾盤或 是真空拉引將透鏡6保持。但是，透鏡加工中，挾盤或是 〇 真空拉引可切換至開放狀態。在開放狀態下的加工中，透 鏡6是一邊隨著透鏡加工具8旋轉一邊被加工。且，透鏡 支架7，是藉由省略圖示的馬達而旋轉。在本例中，支架 軸7a是垂直地被配置，被安裝於其下端的透鏡支架7的 中心軸線2a是朝垂直方向（Z軸的方向）延伸。 下軸組件3，是具備：將被保持在透鏡支架7的透鏡 6加工用的透鏡加工具8、及將透鏡加工具8在其旋轉中 心軸線3a周圍旋轉驅動用的旋轉驅動機構9、及將透鏡加 〇 工具8對於透鏡支架7移動用的移動機構1〇。透鏡加工具 8，是在朝上方的狀態被安裝在轉軸21的上端，轉軸21 是藉由保持塊體22在可旋轉自如的狀態下被支撐。在保 持塊體22中搭載有將轉軸21旋轉驅動用的轉軸馬達23。 藉由這些轉軸21、保持塊體22及轉軸馬達23構成旋轉驅 動機構9 ° 透鏡加工具8的移動機構10，在初期狀態中，如第i 圖所示，下軸組件3的轉軸21的旋轉中心軸線3a是在與 上軸組件2的透鏡支架7的中心軸線2a —致的位置將透 -11 - 200936308 鏡加工具8保持。移動機構1 0，是具備位置調整螺絲2 5 (第4驅動機構）及第1〜3驅動機構30、50、60。 詳細說明的話，移動機構10是具備塊體支撐板24， 將透鏡加工具8的保持塊體22，在水平的γ軸方向可往 復直線移動的狀態下支撐。對於保持塊體22的塊體支撐 板24的γ軸方向的位置是成爲可藉由位置調整螺絲25 (第4驅動機構）調整。可取代位置調整螺絲25，搭載具 備將保持塊體22朝Υ軸方向往復直線移動用的馬達、給 u 進螺絲及線性導引的驅動機構也可以。 將保持塊體22支撐的塊體支撐板24是被搭載於第1 驅動機構30。第1驅動機構30是被搭載在配置成垂直的 姿勢的支撐板31，在此支撐板31的表面具備：由一定的 間隔平行地被配置的導引軌道32a、32b、及可沿著這些的 導引軌道32a、32b滑動的滑動板33、及將滑動板33滑動 用的給進螺絲3 4、及將給進螺絲3 4旋轉驅動用的伺服馬 達35。在滑動板33的表面搭載有塊體支撐板24，該滑動 ◎ 板33的移動方向，是被作成與透鏡加工具8的旋轉中心 軸線3a的方向一致的方向。 在第1驅動機構30的支撐板31的背面中第1支軸41 及第2支軸42相互連結。第1支軸41，是在以與包含旋 轉中心軸線3a的平面垂直的方向’即，朝與Y軸平行的 方向延伸的第1軸線41a爲中心可旋轉的狀態下與支撐板 3 1的背面的上端側的部位連結。 第2支軸42，是在從支撐板31的背面中的第1支軸 -12- 200936308 41遠離下方（Z軸的方向）的位置，藉由安裝於該支撐板 31的背面的滑動機構43,在朝接近及遠離第1支軸41的 方向可滑動的狀態下被支撐。且，該第2支軸42，是在以 與Y軸平行的第2軸線42a爲中心可旋轉的狀態下被安裝 於滑動機構43。 接著，第1支軸41是被搭載於第2驅動機構50，成 爲藉由該第2驅動機構50，朝與Y軸及Z軸垂直的X軸 © 的方向可直線往復移動。第2驅動機構50，是具備：固定 有第1支軸41的滑動板51、及將此滑動板51朝X軸方 向導引的導引軌道52、及沿著導引軌道52將滑動板51移 動用的給進螺絲5 3、及將給進螺絲5 3旋轉驅動用的伺服 馬達54。同樣地，第2支軸42是被搭載於第3驅動機構 60，成爲藉由該第3驅動機構60，朝X軸方向可直線往 復移動。 第3驅動機構60，是具備：固定有第2支軸42的滑 ® 動板61、及將此滑動板61朝X軸方向導引用的導引軌道 62、 及沿著此導引軌道62將滑動板61移動用的給進螺絲 63、 及將給進螺絲63旋轉驅動用的伺服馬達64。又，導 引軌道52、62 ’是被固定於未圖示的透鏡加工裝置1的架 台。 接箸，控制部4，是將上軸組件2的伺服馬達16、旋 轉驅動機構9的轉軸馬達23、第1〜第3驅動機構30、 50、6〇的伺服馬達35、54、64驅動控制。藉由將伺服馬 達3 5、5 4、64個別驅動控制，將透鏡加工具8沿著預定 -13- 200936308 的移動軌跡移動，就可以在被保持於透鏡支架7的透鏡6 的表面進行加工。 [透鏡加工具的動作例] 第2圖是顯示藉由透鏡加工裝置1的移動機構10將 透鏡加工具球心擺動的情況的例的說明圖。即，將透鏡加 工具8，以位於透鏡支架7的中心軸線2a上的加工半徑中 心〇爲中心，在包含該中心軸線2a的平面內形成透鏡加 工具8的旋轉中心軸線3a的狀態下，將透鏡加工具8朝 左右擺動運動的情況的例。在圖中，支點A是第1支軸 41的中心，支點B是第2支軸42的中心。 進行球心擺動式的加工的情況時，透鏡6的加工半徑 爲R，加工半徑中心Ο及支點A的距離爲LO，從加工半 徑中心〇直到支點B爲止的距離及加工半徑R的差爲 LT，對於Z軸的透鏡加工具8的旋轉中心軸線3a的傾斜 爲0的話，支點A的移動量ΔΧΑ及支點B的移動量ΔΧΒ 是如以下的方式被設定。 Δ ΧΑ —L〇tan0 △ XB = (R + LT)tan0 且’支點A、支點B移動的話，如第2圖所示對於加 工半徑R因爲發生誤差AZ，所以由第1驅動機構30所彦 生的旋轉中心軸線3a的方向的移動量ΛΖ是如以下的方 -14- 200936308 式被設定。If it is born, the cam roller will be limited, so the track accuracy of the lens plus X cannot be maintained. Therefore, there is a need to periodically perform inspection, maintenance, and exchange of cams, and it takes a lot of money and time to maintain management. Further, since it is necessary to match the curved surface of the lens to be processed, various types of convex _ ❹ wheels are prepared, so that a large cost is required in the equipment. In addition to this, the cam used is not large because it is large and heavy. Further, in the case of cam exchange, there is a risk of cam falling, etc., so that a special device for cam exchange is also required. Further, depending on the mounting state of the cam, the machining error occurs, and the reproducibility of the machining accuracy is also poor. Further, regardless of the fulcrum supporting type and the learning cam type, it is necessary to precisely adjust the position of the blade edge of the tool according to the curved surface of the processed lens. Therefore, special techniques are required for adjustments, and a lot of adjustment time is required. An object of the present invention is to provide a lens processing apparatus which is a lens processing tool for performing lens processing, which can be accurately moved along an arbitrary track without using a cam mechanism, and the lens surface can be processed by various processing methods. (Means for Solving the Problems) In order to solve the above problems, the lens processing apparatus of the present invention has the structural features of -6-200936308 or less. Further, the symbols in the scratches are as described later, and are added for easy understanding, and the present invention is not limited to the embodiments. That is, the lens processing apparatus (1) of the present invention is characterized in that the central axis (2a) is a lens holder (7) that is disposed to extend in a direction of a predetermined Z-axis, and is to be held in a lens adding tool (8) for processing the lens (6) of the lens holder (7), and a lens adding tool (8) formed in a plane parallel to a central axis (2a) of the lens holder (7) a moving mechanism (10) for moving the lens adding tool (8) in a state of rotating the central axis (3a), wherein the moving mechanism (10) is provided with the lens adding tool (8) facing the lens a first drive mechanism (30) for linearly reciprocating the direction of the rotation center axis (3a), and a support member (31) for supporting the first drive mechanism (30), and perpendicular to the plane a first support shaft (41) coupled to the front support member (31) in a state in which the Y axis is parallel to the first axis (41a), and a first axis (41) connected to the support member (31) The position of the 1 shaft (41) away from the Z axis is toward and away from the aforementioned first shaft The direction of (41) is linearly reciprocable, and the second support shaft (42) coupled to the support member (31) in a state of being rotatable about a second axis (42a) parallel to the Y-axis, and the aforementioned The first support shaft (41) linearly reciprocates in the direction of the X-axis perpendicular to the Y-axis and the Z-axis, and linearly reciprocates the second support shaft (42) in the X-axis direction The third drive mechanism (60) for movement. 200936308 In the moving mechanism of the lens processing apparatus of the present invention, the first support shaft movable in the X-axis direction by the second drive mechanism is coupled to the support member in a rotatable state, and the third drive mechanism can be individually The second fulcrum that moves in the X-axis direction is coupled to the support member so as to be rotatable and movable in a state in which the first fulcrum is movable in the approaching and moving directions. Therefore, when the first fulcrum and the second fulcrum are individually moved in the X-axis direction, the support member is rotated around the axis parallel to the Y-axis, and the first drive mechanism mounted on the support member is also rotated together. . As a result, the rotation center axis of the lens absorbing tool mounted on the first drive mechanism is in a state of being inclined with respect to the central axis (Z axis) of the lens holder. Therefore, when the first driving mechanism moves the lens applying tool in the direction of the rotation center axis, the second and third driving mechanisms can be used to change the direction of the lens adding tool. Move along various movement trajectories. For example, the above-described moving mechanism can realize a lens processing corresponding to the spherical center swing type by using a swinging mechanism for swinging the lens plus a tool around a point on the central axis of the lens holder. Further, by individually controlling the first @ to the third driving means to move the lens applying tool to a predetermined position, the lens surface processing can be performed by a conventional oblique axis method. Therefore, since the processing of various processing methods can be performed by one lens processing apparatus, it is possible to realize a lens processing apparatus with high versatility, and it is possible to reduce equipment cost and installation space. Further, in the moving mechanism of the present invention, the first to third driving mechanisms for linearly reciprocating movement are used to realize the oscillating motion of the lens-applying tool and the like. Since such a drive mechanism can be constituted by a high mechanism having a rigidity of -8 - 200936308 such as a linear guide or a mounting table, the movement trajectory of the lens addition tool can be maintained for a long time and with high precision. Therefore, the problem of maintaining the accuracy of the spherical swing type such as the learning cam type can be eliminated. Further, since the moving mechanism of the present invention does not use the cam mechanism, it is also possible to eliminate the problem of cam exchange and the problem of preparing various cams. Here, the moving mechanism of the lens processing apparatus according to the present invention includes a fourth driving mechanism for linearly reciprocating the φ lens adding tool in the Y-axis direction, and the fourth driving mechanism is mounted on the first driving mechanism. good. The lens processing jig is positioned at any position in the Y-axis direction by the fourth driving mechanism, and the lens-applying tool can be oscillated on the plane parallel to the central axis of rotation by the first to third driving mechanisms for this position. Any movement that waits. Therefore, the processing of the lens surface can be performed by a conventional Oscar-like processing method. © [Effect of the Invention] In the lens processing apparatus of the present invention, the lens adding tool for processing the lens can be moved along various trajectories without using the cam mechanism. Therefore, since it is possible to integrate the lens processing of a plurality of lens processing apparatuses which are conventionally required, it is possible to reduce the equipment investment, the installation space, and the low utilization rate. Further, since the time required for processing preparation such as cam switching can be greatly reduced, the work efficiency can be improved. Since it is not necessary to use a heavy cam mechanism, it is not necessary to perform work such as cam exchange, and safety is improved. -9- 200936308 Even a non-labored worker such as a woman can prepare for machining without using a special device. . Further, since the first to fourth driving mechanisms are configured to perform a linear reciprocating motion having a high rigidity such as a guide and a mounting table, the lens applying tool can be moved so that vibration does not occur. Therefore, the movement trajectory of the lens processing tool can be maintained with high precision for a long period of time, and a highly reliable process can be realized. [Embodiment] Hereinafter, an embodiment of a lens processing apparatus to which the present invention is applied will be described with reference to the drawings. Fig. 1 is a perspective view showing a schematic configuration of a main part of a lens processing apparatus of the present embodiment. The lens processing apparatus 1 includes a lower shaft unit 2, a lower shaft unit 3 disposed below the upper shaft unit 2, and a control unit 4 including a microcomputer for performing various control of the lens processing apparatus 1. The upper shaft unit 2 is provided with a lens holder 7 for holding the lens 6 for surface processing, and the lower shaft unit 3 is provided with a lens applying tool 8 for processing the lens 6 held by the lens holder 7. The upper shaft unit 2 includes a holder shaft 7a that is detachably attached to the lower end of the lens holder 7, and a support sleeve 11 that supports the holder shaft 7a in a rotatable state, and the support sleeve 11 is fixed. A moving block 12 that is movable in the up and down direction and a guiding track 13 that guides the moving block 12 upward and downward. The moving block 12 is moved along the guide rail 13 by the feed screw 15. The feed screw 15 is rotationally driven by the servo motor 16 by -10-200936308. The bracket shaft 7a is urged downward by the spring 17, so that the pressing force of the spring 17 can be adjusted by adjusting the screw 18. Instead of the spring 17, the support shaft 7a may be urged downward by a weight, a pneumatic cylinder or a hydraulic cylinder. The lens holder 7 holds the lens 6 so that the processed surface of the lens 6 faces downward. For example, the lens holder 7 holds the lens 6 by a disk (not shown) or a vacuum pull. However, in lens processing, the disk or 真空 vacuum pull can be switched to the open state. In the processing in the open state, the lens 6 is processed while the lens tool 8 is rotated. Further, the lens holder 7 is rotated by a motor (not shown). In this example, the holder shaft 7a is vertically disposed, and the central axis 2a of the lens holder 7 attached to the lower end thereof extends in the vertical direction (the direction of the Z-axis). The lower shaft unit 3 includes a lens applying tool 8 for processing the lens 6 held by the lens holder 7, and a rotary driving mechanism 9 for rotationally driving the lens applying tool 8 around the rotation center axis 3a thereof, and The lens twisting tool 8 is a moving mechanism 1 for moving the lens holder 7. The lens adding tool 8 is attached to the upper end of the rotating shaft 21 in an upward state, and the rotating shaft 21 is supported by the holding block 22 in a rotatable state. A spindle motor 23 for rotationally driving the rotary shaft 21 is mounted on the holding block 22. The rotating shaft 21, the holding block 22, and the rotating shaft motor 23 constitute a moving mechanism 10 of the rotary driving mechanism 9° lens adding tool 8, and in the initial state, as shown in Fig. i, the rotation of the rotating shaft 21 of the lower shaft assembly 3 The central axis 3a is held at the position corresponding to the central axis 2a of the lens holder 7 of the upper shaft assembly 2 through the -11 - 200936308 mirror plus tool 8. The moving mechanism 10 includes a position adjusting screw 25 (fourth driving mechanism) and first to third driving mechanisms 30, 50, and 60. In detail, the moving mechanism 10 is provided with the block supporting plate 24, and supports the holding block 22 of the lens applying tool 8 in a state where the horizontal γ-axis direction can be linearly moved. The position of the block supporting plate 24 of the holding block 22 in the γ-axis direction is adjusted by the position adjusting screw 25 (fourth driving mechanism). Instead of the position adjusting screw 25, a motor for reciprocating linearly moving the holding block 22 in the z-axis direction, a driving mechanism for the screw and the linear guide may be mounted. The block support plate 24 that supports the holding block 22 is mounted on the first drive mechanism 30. The first drive mechanism 30 is mounted on a support plate 31 that is disposed in a vertical posture, and the surface of the support plate 31 includes guide rails 32a and 32b that are disposed in parallel at a constant interval, and along which the guide rails 32a and 32b are disposed. A slide plate 33 for guiding the guide rails 32a and 32b, a feed screw 34 for sliding the slide plate 33, and a servo motor 35 for rotationally driving the feed screw 34 are provided. The block supporting plate 24 is mounted on the surface of the slide plate 33, and the moving direction of the slide plate 33 is a direction in which the direction of the rotation center axis 3a of the lens tool 8 is aligned. The first support shaft 41 and the second support shaft 42 are coupled to each other in the back surface of the support plate 31 of the first drive mechanism 30. The first support shaft 41 is rotatably centered on the first axis 41a extending in a direction parallel to the Y-axis, in a direction perpendicular to a plane including the rotation center axis 3a, and the back surface of the support plate 31 The upper end side is connected. The second support shaft 42 is a slide mechanism 43 attached to the back surface of the support plate 31 at a position away from the lower side (the direction of the Z-axis) from the first support shaft -12-200936308 41 in the back surface of the support plate 31. It is supported in a state of being slidable in a direction approaching and away from the first support shaft 41. Further, the second support shaft 42 is attached to the slide mechanism 43 while being rotatable about the second axis 42a parallel to the Y-axis. Then, the first support shaft 41 is mounted on the second drive mechanism 50, and is linearly reciprocated in the direction of the X-axis © perpendicular to the Y-axis and the Z-axis by the second drive mechanism 50. The second drive mechanism 50 includes a slide plate 51 to which the first support shaft 41 is fixed, a guide rail 52 that guides the slide plate 51 in the X-axis direction, and a slide plate 51 along the guide rail 52. The feed screw 53 for movement and the servo motor 54 for rotationally driving the screw 53 are driven. Similarly, the second support shaft 42 is mounted on the third drive mechanism 60, and is linearly moved in the X-axis direction by the third drive mechanism 60. The third drive mechanism 60 includes a slide plate 61 to which the second support shaft 42 is fixed, a guide rail 62 for guiding the slide plate 61 in the X-axis direction, and a guide rail 62 along the guide rail 62. The feed screw 63 for moving the slide plate 61 and the servo motor 64 for rotationally driving the feed screw 63. Further, the guide rails 52, 62' are mounts fixed to the lens processing apparatus 1 (not shown). In addition, the control unit 4 drives and controls the servo motor 16 of the upper shaft unit 2, the spindle motor 23 of the rotary drive mechanism 9, and the servo motors 35, 54, 64 of the first to third drive mechanisms 30, 50, and 6 . By individually driving and controlling the servo motors 3 5, 5 4, 64, the lens applying tool 8 is moved along the predetermined trajectory of -13 - 200936308 to perform processing on the surface of the lens 6 held by the lens holder 7. [Example of Operation of Lens Adding Tool] FIG. 2 is an explanatory view showing an example of a case where the lens and the tool center are swung by the moving mechanism 10 of the lens processing apparatus 1. That is, the lens applying tool 8 is centered on the center of the machining radius centered on the central axis 2a of the lens holder 7, and in a state where the rotation center axis 3a of the lens applying tool 8 is formed in the plane including the center axis 2a, An example of the case where the lens adding tool 8 is swung to the left and right. In the figure, the fulcrum A is the center of the first support shaft 41, and the fulcrum B is the center of the second support shaft 42. In the case of the spherical swing type processing, the machining radius of the lens 6 is R, the distance between the machining radius center Ο and the fulcrum A is LO, and the difference between the machining radius center 〇 to the fulcrum B and the machining radius R is LT. When the inclination of the rotation center axis 3a of the Z-axis lens adding tool 8 is 0, the movement amount ΔΧΑ of the fulcrum A and the movement amount ΔΧΒ of the fulcrum B are set as follows. Δ ΧΑ —L〇tan0 Δ XB = (R + LT)tan0 and if the fulcrum A and the fulcrum B move, as shown in Fig. 2, the machining radius R is caused by the error AZ, so the first drive mechanism 30 is derived. The amount of movement ΛΖ in the direction of the rotation center axis 3a is set as in the following formula -14 to 200936308.
△ Z = (LO/cos 0 )-LO 又，角度0爲〇°時’是透鏡支架7的中心軸線2a、及 透鏡加工具8的旋轉中心軸線3 a —致的初期位置。 在透鏡6的加工時，控制部4’是直到預定的値爲止 © —邊將角度0微細變化，一邊計算ΔΧΑ、ΔΧΒ及ΔΖ。 且，依據被計算的ΔΧΑ、ΔΧΒ及ΔΖ，控制部4’是將伺 服馬達3 5、54、64同步地控制。藉由此控制部4中的計 算及控制，透鏡加工裝置1的移動機構10 ’是進行以加工 半徑中心〇爲中心的透鏡加工具8的擺動運動，實現球心 擺動式的透鏡6的加工。 在此，第1驅動機構30的Z軸方向的可移動範圍是 加工半徑R的範圍內的情況時，將支點A固定，只有移動 © 支點B形成角度0，且，藉由第1驅動機構30藉由調整 Z軸方向的透鏡加工具8的位置，實現球心擺動式的透鏡 6的加工也可以。 又，不驅動伺服馬達，而將透鏡加工具8固定在預定 的位置及角度，將上軸組件2上下動來進行透鏡6的加工 的話，可以實現斜軸式的透鏡6的加工。 [其他的實施例] 第4驅動機構，可取代 Y軸方向的位置調整螺絲 -15- 200936308Δ Z = (LO/cos 0 ) - LO Further, when the angle 0 is 〇 °, the initial position of the central axis 2a of the lens holder 7 and the central axis of rotation 3 a of the lens applying tool 8 is obtained. At the time of processing of the lens 6, the control portion 4' is until a predetermined © — 计算 ΧΑ ΧΒ ΧΒ Ζ Ζ Ζ Ζ Ζ Ζ Ζ Ζ Ζ Ζ Ζ Ζ Further, based on the calculated ΔΧΑ, ΔΧΒ, and ΔΖ, the control unit 4' controls the servo motors 35, 54, and 64 in synchronization. By the calculation and control by the control unit 4, the moving mechanism 10' of the lens processing apparatus 1 performs the oscillating motion of the lens adding tool 8 centered on the machining radius center ,, and realizes the processing of the spherical oscillating lens 6. Here, when the movable range of the first drive mechanism 30 in the Z-axis direction is within the range of the machining radius R, the fulcrum A is fixed, and only the movement © fulcrum B forms an angle of 0, and the first drive mechanism 30 is provided by the first drive mechanism 30. The processing of the spherical oscillation type lens 6 can be realized by adjusting the position of the lens adding tool 8 in the Z-axis direction. Further, when the lens tool 8 is fixed at a predetermined position and angle without driving the servo motor, and the upper shaft unit 2 is moved up and down to perform the processing of the lens 6, the processing of the oblique-axis lens 6 can be realized. [Other Embodiments] The fourth drive mechanism can replace the position adjustment screw in the Y-axis direction -15- 200936308
25，使用由給進螺絲及伺服馬達所構成的Y軸驅動機構的 情況時，藉由第1〜第4驅動機構控制透鏡加工具8的移 動位置，就可以實現行星方式的透鏡加工方法。且，可以 組合：使用第4驅動機構的透鏡加工具8的Υ軸方向的移 動、及使用第2、3驅動機構的透鏡加工具8的X軸方向 的移動，實現奧斯卡式的透鏡加工方法。進一步，藉由變 更ΔΧΑ、ΔΧΒ及ΔΖ的計算式，不只有球面透鏡，非球 面透鏡等的多重曲面的加工也成爲可能。 Q 又，上述的例，雖是在初期狀態，上軸組件2的中心 軸線2a、及下軸組件3的旋轉中心軸線3a，是直線狀形 成的情況的例。但這些中心軸線2a及旋轉中心軸線3a， 是在加工半徑中心〇，由預先決定的角度交叉的狀態，作 爲初期狀態當然也可以。 且，上述的例，雖是在上側配置透鏡支架7，在下側 配置透鏡加工具8的例，但是與其相反，在下側配置透鏡 支架7，在上側配置透鏡加工具8也可以。進一步，在水 〇 平方向，將透鏡支架7及透鏡加工具8相面對配置的情 況，在與垂直方向或是水平方向不同的方向將透鏡支架7 及透鏡加工具8相面對配置的情況也可以。例如，在水平 方向將透鏡支架7及透鏡加工具8相面對配置的情況時， 在第1圖中使Z軸成爲水平軸即可。 【圖式簡單說明】 [第1圖]顯示適用本發明的透鏡加工裝置的主要部的 -16- 200936308 槪略構成的立體圖。 [第2圖]顯示將第1圖的透鏡加工裝置的透鏡加工具 球心擺動的情況的動作例的說明圖。 【主要元件符號說明】 1 :透鏡加工裝置 2 :上軸組件 φ 2 a :中心軸線 3 :下軸組件 3 a :旋轉中心軸線 4 :控制部 6 :透鏡. 7 :透鏡支架 7a :支架軸 8 :透鏡加工具 © 9:旋轉驅動機構 10 :移動機構 1 1 :支撐套筒 12 :移動塊體 13 :導引軌道 1 5 :給進螺絲 1 6 :伺服馬達 1 7 :彈簧 1 8 :調整螺絲 -17- 200936308 21 :轉軸 22 :保持塊體 23 :轉軸馬達 24 :塊體支撐板 25 :位置調整螺絲 3 0 :第1驅動機構 3 1 :支撐板 32a、32b :導引軌道 0 3 3 :滑動板 3 4 :給進螺絲 3 5 :伺服馬達 41 :第1支軸 41 a :第1軸線 42 :第2支軸 42a :第2軸線 43 :滑動機構 ❹ 50 :第2驅動機構 5 1 :滑動板 52 :導引軌道 5 3 :給進螺絲 5 4 :伺服馬達 60 :第3驅動機構 6 1 :滑動板 62 :導引軌道 -18- 200936308 6 3 :給進螺絲 64 :伺服馬達When the Y-axis drive mechanism including the feed screw and the servo motor is used, the planetary-type lens processing method can be realized by controlling the movement positions of the lens-applying tool 8 by the first to fourth drive mechanisms. Further, an Oscar-type lens processing method can be realized by using the movement of the lens adding tool 8 of the fourth driving mechanism in the z-axis direction and the movement of the lens-applying tool 8 of the second and third driving mechanisms in the X-axis direction. Further, by changing the calculation formulas of ΔΧΑ, ΔΧΒ, and ΔΖ, it is possible to process not only a multi-curved surface such as a spherical lens or an aspherical lens. Further, in the above-described example, the central axis 2a of the upper shaft unit 2 and the central axis of rotation 3a of the lower shaft unit 3 are linearly formed in an initial state. However, these central axis 2a and the central axis of rotation 3a are in a state in which the center of the machining radius 〇 intersects at a predetermined angle, and it is of course possible to assume the initial state. In the above-described example, the lens holder 7 is disposed on the upper side and the lens attachment tool 8 is disposed on the lower side. However, the lens holder 7 may be disposed on the lower side and the lens attachment tool 8 may be disposed on the upper side. Further, in the case where the lens holder 7 and the lens applying tool 8 are disposed facing each other in the horizontal direction, the lens holder 7 and the lens adding tool 8 are disposed facing each other in a direction different from the vertical direction or the horizontal direction. Also. For example, when the lens holder 7 and the lens applying tool 8 are arranged to face each other in the horizontal direction, the Z axis may be a horizontal axis in Fig. 1 . BRIEF DESCRIPTION OF THE DRAWINGS [Fig. 1] A perspective view showing a schematic configuration of a main portion of a lens processing apparatus to which the present invention is applied, -16-200936308. [Fig. 2] is an explanatory view showing an operation example of a case where the lens processing tool center of the lens processing apparatus of Fig. 1 is swung. [Main component symbol description] 1 : Lens processing device 2 : Upper shaft assembly φ 2 a : Center axis 3 : Lower shaft assembly 3 a : Center axis of rotation 4 : Control portion 6 : Lens. 7 : Lens holder 7a : Bracket shaft 8 : Lens plus tool © 9: Rotary drive mechanism 10: Moving mechanism 1 1 : Support sleeve 12: Moving block 13 : Guide rail 1 5 : Feeding screw 1 6 : Servo motor 1 7 : Spring 1 8 : Adjusting screw -17- 200936308 21 : Rotary shaft 22 : Holding block 23 : Shaft motor 24 : Block support plate 25 : Position adjustment screw 3 0 : First drive mechanism 3 1 : Support plate 32a, 32b : Guide rail 0 3 3 : Sliding plate 3 4 : Feeding screw 3 5 : Servo motor 41 : First support shaft 41 a : First axis 42 : Second support shaft 42 a : Second axis 43 : Sliding mechanism ❹ 50 : Second drive mechanism 5 1 : Sliding plate 52: Guide rail 5 3 : Feeding screw 5 4 : Servo motor 60 : Third drive mechanism 6 1 : Sliding plate 62 : Guide rail -18- 200936308 6 3 : Feed screw 64 : Servo motor
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