200911459 九、發明說明 【發明所屬之技術領域】 本發明係有關於一種雙面磨床，其中有一對的磨輪可 同時對一工件的二側表面進行表面硏磨，特別是有關於一 種雙面磨床，包含有一承載盤，其係固定至一承載盤轉軸 上’並設有一工件固持孔，以供將一工件固定在其內。 【先前技術】 在此種型式的雙面磨床中，工件是供應至設在一輸送 軌道上預定之裝載位置處的工件固持孔內，在該工件因一 承載盤的轉動而插入至磨輪之間，以硏磨該工件的二側表 面後’該工件固持孔內的該工件即會被卸除出去。透過依 序將工件供應至位在裝載位置處的工件固持孔內，可以連 續地硏磨多個工件（參見專利文獻一）。 在此雙面磨床中，固定在工件固持孔內的工件一定會 通過磨輪之間的同一弧形輸送軌道。但是，在有許多工件 要接續地加以硏磨的情形中，磨輪上會在較短的時間內產 生不均的磨耗’這會降低表面硏磨的精度。因此必須要使 用修整裝置頻繁地修整磨輪，這會降低硏磨作業的效率。 另一方面’有建議一種包含有可在繞其軸線轉動時進 行迴轉之承載盤的雙面磨床者。在此種雙面磨床中，工件 是分別固定在多個設於承載盤上的工件固持孔內，而因轉 動及迴旋的組合之故會形成相當複雜的工件輸送軌道，因 之可減少磨輪的不均勻磨耗，進而可改善硏磨精度（參見 -4- 200911459 專利文獻二）。 〔專利文獻一〕日本專利早期公開第n_138430號。 〔專利文獻二〕日本實用新案申請第62_49754號 (日本實用新案早期公開第63-158754號微縮影片）。 【發明內容】 本發明卻解決的問題 在如同專利文獻二的同時使用承載盤的轉動及迴旋的 結構中，承載盤的驅動機構會相當的複雜，增加製造成 本。另外，改變及調整工件輸送軌道是相當的困難，因此 要配合各種尺寸的工件亦是相當的困難。再者’由於工件 的裝載位置是會改變的，因此裝載裝置的結構亦會變成相 當的複雜。 (本發明的目的） 本發明的目的在於提供一種雙面磨床，其中用以固定 工件的工件固持孔的輸送軌道可由一簡單的結構加以複雜 化，因此磨輪將不容易產生不均勻的磨耗，而能長時期保 持表面硏磨的精度。 解決問題的手段 爲能解決此問題，根據本發明之一觀點的雙面磨床包 含一對磨輪，其等係設置在同一磨輪轉動軸線上而互相面 對，及包含一承載盤，其具有一可將一工件固定在其內的 -5- 200911459 工件固持孔’並係固定至一承載盤轉軸上，該承載盤轉軸 具有一轉動軸線，該轉動軸線係平行於該磨輪轉動軸線， 該工件係在一位於該工件固持孔的輸送軌道上的預定裝載 位置處供應至該工件固持孔內，在該工件因承載盤的轉動 而插入至該等磨輪之間，以硏磨該工件的二側表面後，該 工件固持孔內的該工件即會卸除出去，此雙面磨床的特徵 在於該承載盤轉軸係由一擺動構件加以支撐，該擺動構件 可繞著一擺動軸線擺動，該擺動軸線係平行於該承載盤轉 動軸線，以及一擺動驅動機構可將一擺臂加以擺動，以使 該承載盤轉軸及該承載盤繞著該擺動軸線擺動。 因此，固定於該承載盤內而插入至該等磨輪之間的該 工件會通過該等磨輪之間而同時被擺動。因此，相較於工 件僅通過弧形輸送軌道的習用技藝而言，其將可以長時間 保持高硏磨精度，而能減少磨輪上不均勻磨耗的產生。 另外，由於承載盤轉軸及承載盤會被擺動，因此相較 於要利用轉動及迴旋的習用裝置而言，其可以達到結構簡 單及成本降低。 在根據本發明此一觀點的雙面磨床中，最好該擺臂是 設置成可使得該擺動軸線位於該裝載位置的工件固持孔的 中心處。 因此，即使承載盤被擺動構件加以擺動，工件的裝載 位置仍不會改變，且該裝載位置永遠會維持在一固定的位 置處。因此，裝載裝置的結構將不會複雜。 200911459 【實施方式】 第1圖至第5圖顯示出根據本發明一實施例的直立式 雙面磨床，下面將配合於這些圖式來說明本發明之一實施 例。第1是一示意圖，顯示出根據本發明一實施例的直立 式雙面磨床的整體。在下面的說明中，爲了便於說明解 釋，操作員所在的前側將設爲此直立式雙面磨床的前方， 如圖式中箭號所示。在磨床本體1中，一對上方及下方磨 輪2設置於一垂直的磨輪軸線ΟΙ上而互相面對，每一磨 輪2均是固定在位於磨輪軸線〇1上的上方及下方磨輪轉 軸3之一者上。上方及下方磨輪轉軸3係結合至驅動馬達 5上，而在其間分別設有動力傳輸機構，且上方及下方磨 輪轉軸3係構造成能夠沿垂直方向移動。 一承載裝置支撐枱7係設置於該磨床本體1的前方 側，一工件承載裝置10設置於該承載裝置支撐枱7上。 一薄板狀承載盤11水平地設置於工件承載裝置10的上方 末端處。承載盤11是固定在設於工件承載裝置10內的垂 直承載盤轉軸1 2上，而承載盤1 1之後側末端部位則是插 置於該二磨輪2之間。一裝載裝置13設置於承載盤11上 的預定裝載位置All處。一工件接收裝置14連接至工件 承載裝置1〇上。該工件接收裝置14可接收一卸載而已加 工過的工件，並留置該已加工過工件。 (工件承載裝置10的整體結構） 第2圖是一放大平面圖，顯示出第1圖中的工件承載 200911459 裝置1 0，第3圖是沿著第2圖中線I π -1 π所取的剖面 圖，第4圖是沿著第2圖中線IV-IV所取的剖面圖’第5 圖則是沿著第4圖中線V -V所取的剖面圖。參閱第2 圖，承載盤轉軸12及承載盤11是構造成能夠沿著箭號R 的方向繞一承載盤轉動軸線〇2轉動。在承載盤11中’ 在相對於承載盤轉動軸線〇2對稱的位置處設有多對的工 件固持孔1 8。承載盤1 1的厚度是比未加工之工件的厚度 爲薄，且承載盤U的厚度是構造成在一工件W固定於該 工件固持孔18內時，能使工件W之上方及下方末端表面 的突出量大於硏磨裕度。也就是說，當工件w在被固定 於工件固持孔18內而插置於該二磨輪2之間時’承載盤 1 1的厚度是能夠讓工件W的二側末端表面被硏磨掉預定 的量，而不會讓磨輪2接觸到承載盤1 1。 一弧形的入口側下方導引台21是設置於磨輪2的工 件入口側（與旋轉方向R這一側相對的一側），而位於磨 輪2旁邊。入口側下方導引台21是沿著工件固持孔1 8的 輸送軌道設置的。一入口側上方導引台22設置成讓此入 口側上方導引台22與入口側下方導引台2 1間具有一預定 的間距，且此入口側上方導引台22係自上方面向著該入 口側下方導引台21。入口側上方導引台22是形成爲在承 載盤11的周邊方向上較入口側下方導引台21爲短。一弧 形的出口側下方導引台23是設置於磨輪2的工件出口側 (旋轉方向R的這一側），而位於磨輪2旁邊。出口側下 方導引台23是沿著工件固持孔1 8的輸送軌道設置的。一 -8- 200911459 出口側上方導引台24設置成讓此出口側上方導引台24與 出口側下方導引台2 3間具有一預定的間距，且此出口側 上方導引台24係自上方面向著該出口側下方導引台23。 出口側上方導引台24是形成爲在承載盤η的周邊方向上 較出口側下方導引台23爲短。 入口側下方導引台21與入口側上方導引台22在垂直 方向上所形成的間隙是稍微大於未加工之工件 W的厚 度，以使得至少能讓固定在工件固持孔1 8內的未加工工 件 W平順地通過該間隙。另一方面，出口側下方導引台 23與出口側上方導引台24在垂直方向上所形成的間隙是 大於已加工之工件W的厚度’以使得至少能讓固定在工 件固持孔1 8內的已加工工件W平順地通過該間隙。 工件W的裝載位置A1是設置於入口側下方導引台 21上位在與旋轉方向R這一側相反的一側的位置處’也 就是說，位在不與入口側上方導引板22重疊的一部份 上。一工件閃定壁13a，其係屬於裝載裝置13的，係設 置於裝載位置A1的旋轉方向R這一側’且工件問定壁 1 3a是以人字形朝向裝載位置A 1開放的。 參閱第3圖，工件問定壁13是設置於承載盤11的上 方，且此工件閂定壁13是由—適當的支撐托架加以固定 在工件承載裝置內的適當構件上。工件閂定壁13的下 方邊緣是設置成相對於入口側下方導引台21之上方末端 表面分隔開一段稍微大於未加工工件w之厚度的距離。 因此，僅可讓一個固定在承載盤11之工件固持孔18內的 -9- 200911459 工件w通過工件閂定壁1 3的下方邊緣與入口側導引台2 1 的上方末端表面之間。也就是說，裝載於裝載位置A1上 的未加工工件W會被工件閂定壁1 3加以閂固住。當工件 固持孔18在裝載位置A1處因承載盤11的轉動而被加以 裝塡時，位於下方的工件W即會掉落至工件固持孔1 8而 被裝載，且此工件W會沿著旋轉方向R而輸送。 另一方面，工件W的卸載位置A2是位於出口側下方 導引台23在旋轉方向R這一側的邊緣旁，而工件接收裝 置14的一桿構件14a則是設置於卸載位置A2的下方。也 就是說，在諸如活塞環之類的環狀工件W要硏磨的情形 中，自出口側下方導引台23之該邊緣卸放出來的工件W 會在卸載位置A處由該桿構件1 4 a的前側末端加以接收， 而工件W則會因桿構件1 4a的向前而向下的傾斜度而自 動地向前滑落，並由該桿構件1 4a加以留置住。 一擺臂30的基部末端部位30a，其中有該裝載位置 A 1的中心03設於一擺動軸線上，係設置於該入口側下方 導引台21的下方。擺臂30係自該基部末端部位30a延伸 通過該承載盤1 1的轉動軸線02，且該擺臂3 0係可轉動 地支撐著該承載盤轉軸1 2於一前側末端部位3 Ob上。 一曲柄式擺動驅動機構3 1設置於擺臂3 0的前側末端 部位30b的前方，以供擺動該擺臂30。該曲柄式擺動驅 動機構31的一輸出連桿3 2係由一連接銷34加以可轉動 地結合至擺臂3 0的前側末端部位3 Ob的前側末端表面 上〇 -10- 200911459 (承載盤的轉動結構及工件承載裝置10的擺動結 構） 參閱第3圖，擺臂30的基部末端部位30a係由一擺 動支撐軸36加以支撐，而能藉由一對上方及下方軸承37 而繞著擺動軸線〇3擺動。擺動支撐軸36係垂直地固定 於承載裝置支撐枱7上。 在擺臂3 0的前側末端部位3 Ob上形成有一向上突出 的圓柱狀部位，而承載盤轉軸1 2則是藉由上方及下方軸 承4 1而以可轉動的方式支撐在該圓柱狀部位的內側周邊 表面上。承載盤轉軸12的下方末端部位是結合至固定在 擺臂30下方部位上的承載盤轉動驅動馬達44的輸出軸 44a上。一碟狀的承載盤固定托架47固定在承載盤轉軸 12的上方末端’而設置於固定托架47上的承載盤11則 是由一鎖固碟48自上方加以鎖緊並固定住。 一支撐滾輪50設置於擺臂30的前緣的下方表面上， 而能夠滾動。該支撐滾輪50係設置於一位於承載裝置支 撐枱7上的軌條51上，且該支撐滾輪50可隨著擺臂30 的擺動而在軌條51上滾動。 第4圖顯示出詳細的曲柄式擺動驅動機構31。此曲 柄式擺動驅動機構31包含有一設有齒輪的馬達61，其係 結合至一設於承載裝置支撐枱7上的結合台60上；一曲 柄臂63，其係固定在該設有齒輪的馬達61的輸出軸61a 的上方末端部位上；以及該連桿3 2，其係由銷6 2加以可 -11 - 200911459 轉動地結合至曲柄臂63的前側末端部位上。該設有齒 的馬達61的輸出軸61a的轉動可帶動連桿32的銷62 著通過曲柄臂63的輸出軸線〇4轉動，因之而透過連 32擺動擺臂30。連桿32包含有—螺接部位32a，位於 中間處’因此連桿3 2的長度係能以伸縮螺套的方式加 調整。也就是說，擺臂30的擺動開始位置及擺動結束 置可藉由調整連桿3 2的長度來加以改變。藉由使用一 形孔洞或多個銷孔，其可調整曲柄臂63的長度，或者 62在連桿32之前側末端部位的位置，因之而可調整銷 自設有齒輪的馬達的輸出軸61a偏離開的偏離量。因此 以調整擺臂3 0的擺動量（振幅）。 第5圖顯不出§羊細的擺動驅動機構31。該對支撐 輪50間在擺動方向B1及B2上具有距離，且在擺臂 的前緣邊緣部位上設有一擺動位置偵測突出部70，位 該等支撐滾輪5 0之間。另一方面，一對擺動位置偵測 接開關72設置成在擺動方向B1及B2上具有一距離而 對著該擺臂30的前緣邊緣表面。當突出部70靠近於該 近接開關72之每一者時，該近接開關72即可偵測到該 臂3 0的擺動開始位置及擺動結束位置。 (作業） (1 )在第2圖中，許多個低構形工件（例如說厚 爲0.5mm至1.0mm的活塞環）W裝載於裝載位置A1， 些工件W係由工件閂定壁1 3加以閂固住。在此狀態下 輪 繞 桿 其 以 位 長 銷 62 可 滾 30 於 近 面 等 擺 度 這 -12- 200911459 虽承載盤1 1沿著箭號R的方向繞著承載盤轉動軸線〇2 轉動時，曲柄式擺動驅動機構3 i即會將擺臂3〇沿著箭號 B1及B2的方向繞著擺動軸線03擺動。 (2)當工件固持孔18因承載盤11的轉動而到達裝 載位置A 1時，位在底部的工件w即可供應至工件固持孔 18內。當固定在工件固持孔18內的工件W通過入口側下 方導引台2 1及入口側上方導引台22間的間隙時，該工件 W在垂直方向上的位置會被導引成能配合於磨輪2間的間 隙’工件W即可插入至磨輪2之間，且該等上方及下方 磨輪2即可對該工件W的上方及下方末端表面進行面硏 磨。在硏磨的過程中，如前所述，承載盤11在繞著承載 盤轉動軸線02轉動時，亦會繞著擺動軸線03擺動。因 此’工件固持孔18內的該工件w將不會形成簡單的弧形 輸送路徑，而是水平波動的輸送路徑，且該工件W會通 過該等磨輪2之間。因此，不均勻的磨耗將不容易於在長 時間使用後發生’而能維持高的表面硏磨精度。 (3 )在硏磨後，卸放至工件出口側的工件W會通過 出口側下方導引台23與出口側上方導引台24之間，且該 工件W會在卸載位置A2處自出口側下方導引台23在旋 轉方向R這一側的邊緣處掉落而釋放出去，並由工件接收 裝置14的桿構件14a加以接收，而後向前滑落而留置。 (4 )已加工工件w自其內卸放出去後的工件固持孔 1 8會再次移動至裝載位置a 1，而未加工工件W則再供應 至該工件固持孔1 8內。 -13- 200911459 在本實施例中，由於擺臂30的擺動軸線〇3是與裝 載位置Λ1的中心重合，即使擺臂30被瓏動，該裝載位 置亦不會改變，而工件固持孔18永遠會通過固定不動的 裝載位置A1。因此，其僅需要將屬於裝載裝置13的簡易 工件閂定壁1 3加以固定至該一位置上即可，故能實現簡 單的架構。 (其他的實施例） (1 )在前述的實施例中’本發明是應用至磨輪轉動 軸線是垂直設置的直立式雙面磨床上。但是，本發明亦可 應用至磨輪轉動軸線是水平設置的水平式雙面磨床上。 【圖式簡單說明】 第1圖是一示意圖，顯示出根據本發明一實施例的直 立式雙面磨床的整體。 第2圖是一放大平面圖，顯示出第1圖中之直立式雙 面磨床的工件承載裝置。 第3圖是沿著第2圖中線111 -1 π所取的剖面圖。 第4圖是沿著第2圖中線IV-IV所取的剖面圖。 第5圖是沿著第4圖中線V-V所取的剖面圖。 【主要元件符號說明】 1 :磨床本體 2 :磨輪 -14- 200911459 3 :磨輪轉軸 5 :驅動馬達 7 :承載裝置支撐枱 1 0 :工件承載裝置 1 1 ·‘承載盤 1 2 :承載盤轉軸 1 3 :裝載裝置 1 3 a :工件閂定壁 1 4 :工件接收裝置 1 4 a :桿構件 1 8 :工件固持孔 21 :入口側下方導引台 22 :入口側上方導引台 23 :出口側下方導引台 24 :出口側上方導引台 3 〇 :擺臂 3 0 a :基部末端部位 3 0 b :前側末端部位 3 1 :曲柄式擺動驅動機構 3 2 :連桿 3 2 :螺接部位 3 4 :連接銷 36 :擺動支撐軸 3 7 :軸承 -15 200911459 41 ： 4 4 ： 44a 47 : 48 : 50 : 51 : 60 : 61 : 6 1a 62 : 6 3 ·· 70 : 72 : A1 ： A2 ： 01 : 02 : 03 : 04 : R ·· W ： 軸承 承載盤轉動驅動馬達 :輸出軸 固定托架 鎖固碟 支撐滾輪 軌條 結合台 設有齒輪的馬達 :輸出軸 銷 曲柄臂 突出部 近接開關 裝載位置 卸載位置 磨輪軸線 承載盤轉動軸線 擺動軸線 輸出軸線 旋轉方向 工件 -16-200911459 IX. INSTRUCTIONS OF THE INVENTION [Technical Field] The present invention relates to a double-sided grinding machine in which a pair of grinding wheels can simultaneously honing the two side surfaces of a workpiece, in particular, a double-sided grinding machine. A carrier tray is mounted that is secured to a carrier disk shaft and is provided with a workpiece retaining aperture for securing a workpiece therein. [Prior Art] In this type of double-sided grinding machine, the workpiece is supplied into a workpiece holding hole provided at a predetermined loading position on a conveying rail, and the workpiece is inserted between the grinding wheels due to the rotation of a carrier disk. After the two side surfaces of the workpiece are honed, the workpiece in the workpiece holding hole is removed. By sequentially supplying the workpiece into the workpiece holding hole at the loading position, it is possible to continuously honing a plurality of workpieces (see Patent Document 1). In this double-sided grinding machine, the workpiece fixed in the workpiece holding hole must pass through the same curved conveying path between the grinding wheels. However, in the case where there are many workpieces to be honed in succession, the grinding wheel will produce uneven wear in a short period of time' which will reduce the accuracy of surface honing. Therefore, it is necessary to frequently dress the grinding wheel with the dressing device, which reduces the efficiency of the honing operation. On the other hand, there has been proposed a double-sided grinder including a carrier disk that can be rotated while rotating about its axis. In such a double-sided grinding machine, the workpieces are respectively fixed in a plurality of workpiece holding holes provided on the carrier, and a combination of rotation and swirling forms a relatively complicated workpiece conveying track, thereby reducing the grinding wheel. Uneven wear can improve the honing accuracy (see -4-200911459 Patent Document 2). [Patent Document 1] Japanese Patent Laid-Open No. n-138430. [Patent Document 2] Japanese Utility New Case Application No. 62_49754 (Japanese Utility New Case Early Publication No. 63-158754 Miniature Film). SUMMARY OF THE INVENTION Problems to be Solved by the Invention In the structure in which the rotation and the rotation of the carrier are simultaneously used as in Patent Document 2, the driving mechanism of the carrier disk is considerably complicated, increasing the manufacturing cost. In addition, it is quite difficult to change and adjust the workpiece transport track, so it is quite difficult to match workpieces of various sizes. Furthermore, since the loading position of the workpiece is changed, the structure of the loading device becomes quite complicated. (Object of the Invention) An object of the present invention is to provide a double-sided grinding machine in which a conveying rail for fixing a workpiece holding hole of a workpiece can be complicated by a simple structure, so that the grinding wheel will not easily generate uneven wear, and It can maintain the precision of surface honing for a long time. Means for Solving the Problem In order to solve the problem, a double-sided grinding machine according to an aspect of the present invention includes a pair of grinding wheels which are disposed on the same grinding wheel rotation axis and face each other, and includes a carrier disk having a a workpiece holding hole '5-200911459 fixed in a workpiece and fixed to a carrier disk rotating shaft, the carrier disk rotating shaft has an axis of rotation parallel to the axis of rotation of the grinding wheel, the workpiece is tied a predetermined loading position on the conveying rail of the workpiece holding hole is supplied into the workpiece holding hole, and the workpiece is inserted between the grinding wheels due to the rotation of the carrier disc to honing the two side surfaces of the workpiece The workpiece in the workpiece holding hole is removed. The double-sided grinding machine is characterized in that the carrier disk shaft is supported by a swinging member, and the swinging member is swingable about a swing axis, and the swing axis is parallel. a swinging axis of the carrier, and a swinging drive mechanism for swinging a swing arm such that the carrier shaft and the carrier are placed around the swing axis . Therefore, the workpiece fixed in the carrier and inserted between the grinding wheels passes through between the grinding wheels while being oscillated. Therefore, compared to the conventional technique in which the workpiece is only passed through the curved conveying rail, it can maintain high honing precision for a long time, and can reduce uneven wear on the grinding wheel. In addition, since the carrier shaft and the carrier tray are oscillated, it is simple in structure and cost reduction as compared with conventional devices that utilize rotation and rotation. In the double-sided grinding machine according to this aspect of the invention, preferably, the swing arm is disposed such that the swing axis is at the center of the workpiece holding hole at the loading position. Therefore, even if the carrier disk is swung by the swinging member, the loading position of the workpiece does not change, and the loading position is always maintained at a fixed position. Therefore, the structure of the loading device will not be complicated. [Embodiment] Figs. 1 to 5 show a vertical double-sided grinding machine according to an embodiment of the present invention, and an embodiment of the present invention will be described below in conjunction with these drawings. The first is a schematic view showing the entirety of an upright double-sided grinding machine according to an embodiment of the present invention. In the following description, for the convenience of explanation, the operator's front side will be set to the front of the upright double-sided grinder, as indicated by the arrow in the figure. In the grinder body 1, a pair of upper and lower grinding wheels 2 are disposed on a vertical grinding wheel axis 而 facing each other, and each grinding wheel 2 is fixed to one of the upper and lower grinding wheel rotating shafts 3 located on the grinding wheel axis 〇1. On. The upper and lower grinding wheel shafts 3 are coupled to the drive motor 5 with power transmission mechanisms therebetween, and the upper and lower grinding wheel shafts 3 are configured to be movable in the vertical direction. A carrier support table 7 is disposed on the front side of the grinder body 1, and a workpiece carrying device 10 is disposed on the carrier support table 7. A thin plate-shaped carrier tray 11 is horizontally disposed at the upper end of the workpiece carrying device 10. The carrier tray 11 is fixed to the vertical carrier disk shaft 12 provided in the workpiece carrier 10, and the rear end portion of the carrier disk 1 is inserted between the two grinding wheels 2. A loading device 13 is disposed at a predetermined loading position All on the carrier tray 11. A workpiece receiving device 14 is coupled to the workpiece carrier 1 . The workpiece receiving device 14 can receive a workpiece that has been unloaded and has been machined. (The overall structure of the workpiece carrying device 10) Fig. 2 is an enlarged plan view showing the workpiece carrying the 200911459 device 10 in Fig. 1, and Fig. 3 is taken along the line I π -1 π in Fig. 2 The cross-sectional view, Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 2, and Fig. 5 is a cross-sectional view taken along line V-V of Fig. 4. Referring to Fig. 2, the carrier reel 12 and the carrier 11 are configured to be rotatable about a carrier rotation axis 〇2 in the direction of the arrow R. A plurality of pairs of workpiece holding holes 18 are provided in the carrier tray 11 at positions symmetrical with respect to the rotation axis 〇2 of the carrier. The thickness of the carrier disk 11 is thinner than the thickness of the unprocessed workpiece, and the thickness of the carrier disk U is configured to enable the upper and lower end surfaces of the workpiece W when a workpiece W is fixed in the workpiece holding hole 18. The amount of protrusion is greater than the honing margin. That is, when the workpiece w is inserted between the two grinding wheels 2 while being fixed in the workpiece holding hole 18, the thickness of the carrier disk 1 is such that the two end surfaces of the workpiece W are honed away by a predetermined amount. The amount is not allowed to contact the grinding wheel 2 to the carrier tray 11. An arc-shaped inlet-side lower guide table 21 is provided on the workpiece inlet side (the side opposite to the side of the rotational direction R) of the grinding wheel 2, and is located beside the grinding wheel 2. The inlet side lower guide table 21 is disposed along the conveying path of the workpiece holding hole 18. An inlet-side upper guide table 22 is disposed such that the inlet-side upper guide table 22 and the inlet-side lower guide table 21 have a predetermined interval, and the inlet-side upper guide table 22 faces from above. The inlet side lower guide table 21. The inlet-side upper guide table 22 is formed to be shorter in the peripheral direction of the carrier tray 11 than the inlet-side lower guide table 21. An arc-shaped outlet-side lower guide table 23 is provided on the workpiece outlet side (this side of the rotational direction R) of the grinding wheel 2, and is located beside the grinding wheel 2. The outlet side lower guide table 23 is disposed along the conveying path of the workpiece holding hole 18. A-8-200911459 The outlet-side upper guide table 24 is disposed such that the outlet-side upper guide table 24 and the outlet-side lower guide table 23 have a predetermined interval, and the outlet-side upper guide table 24 is self-contained The upper side faces the outlet side lower guide table 23. The outlet-side upper guide table 24 is formed to be shorter in the peripheral direction of the carrier tray n than the outlet-side lower guide table 23. The gap formed in the vertical direction between the inlet-side lower guide table 21 and the inlet-side upper guide table 22 is slightly larger than the thickness of the unprocessed workpiece W, so that at least the unprocessed in the workpiece holding hole 18 can be made. The workpiece W passes smoothly through the gap. On the other hand, the gap formed by the outlet-side lower guide table 23 and the outlet-side upper guide table 24 in the vertical direction is larger than the thickness of the processed workpiece W so that at least the workpiece holding hole 18 can be fixed. The machined workpiece W passes smoothly through the gap. The loading position A1 of the workpiece W is disposed at a position on the side opposite to the side of the rotation direction R on the lower side of the inlet side lower guide portion 21, that is, the position is not overlapped with the upper guide plate 22 on the inlet side. Part of it. A workpiece flashing wall 13a belonging to the loading device 13 is disposed on the side of the rotational direction R of the loading position A1 and the workpiece determining wall 13a is opened in a herringbone shape toward the loading position A1. Referring to Fig. 3, the workpiece wall 13 is disposed above the carrier tray 11, and the workpiece latching wall 13 is secured to a suitable member within the workpiece carrier by a suitable support bracket. The lower edge of the workpiece latching wall 13 is disposed to be spaced apart from the upper end surface of the inlet-side lower guide table 21 by a distance slightly larger than the thickness of the unmachined workpiece w. Therefore, only one -9-200911459 workpiece w fixed in the workpiece holding hole 18 of the carrier tray 11 can pass between the lower edge of the workpiece latching wall 13 and the upper end surface of the inlet-side guide table 2 1 . That is, the unmachined workpiece W loaded on the loading position A1 is latched by the workpiece latching wall 13. When the workpiece holding hole 18 is mounted at the loading position A1 by the rotation of the carrier disk 11, the workpiece W located below is dropped to the workpiece holding hole 18 and loaded, and the workpiece W is rotated along. Transport in direction R. On the other hand, the unloading position A2 of the workpiece W is located beside the edge of the guide table 23 on the side of the rotation direction R below the outlet side, and a rod member 14a of the workpiece receiving device 14 is disposed below the unloading position A2. That is, in the case where the annular workpiece W such as the piston ring is to be honed, the workpiece W discharged from the edge of the outlet side lower guide table 23 is at the unloading position A by the rod member 1 The front end of 4 a is received, and the workpiece W is automatically slid forward due to the downward inclination of the lever member 14a, and is retained by the lever member 14a. The base end portion 30a of the swing arm 30, wherein the center 03 of the loading position A 1 is disposed on a swing axis, is disposed below the guide side lower guide table 21. The swing arm 30 extends from the base end portion 30a through the rotational axis 02 of the carrier disk 11, and the swing arm 30 rotatably supports the carrier disk shaft 12 on a front end portion 3 Ob. A crank type oscillating drive mechanism 3 1 is disposed in front of the front end portion 30b of the swing arm 30 for swinging the swing arm 30. An output link 32 of the crank type oscillating drive mechanism 31 is rotatably coupled to the front end surface of the front end portion 3 Ob of the swing arm 30 by a connecting pin 34 〇-10-200911459 (bearing disk The rotating structure and the swinging structure of the workpiece carrying device 10) Referring to Fig. 3, the base end portion 30a of the swing arm 30 is supported by a swing support shaft 36, and can be pivoted about the swing axis by a pair of upper and lower bearings 37. 〇 3 swings. The swing support shaft 36 is vertically fixed to the carrier support table 7. An upwardly projecting cylindrical portion is formed on the front end portion 3 Ob of the swing arm 30, and the carrier disk shaft 12 is rotatably supported in the cylindrical portion by the upper and lower bearings 41. On the inner peripheral surface. The lower end portion of the carrier disk rotating shaft 12 is coupled to the output shaft 44a of the carrier disk rotation drive motor 44 fixed to the lower portion of the swing arm 30. A disk-shaped carrier tray fixing bracket 47 is fixed to the upper end end of the carrier disk shaft 12, and the carrier tray 11 provided on the fixing bracket 47 is locked and fixed from above by a lock disk 48. A support roller 50 is disposed on the lower surface of the front edge of the swing arm 30 to be able to roll. The support roller 50 is disposed on a rail 51 on the support table 7 of the carrier, and the support roller 50 can roll on the rail 51 as the swing arm 30 swings. Fig. 4 shows a detailed crank type oscillating drive mechanism 31. The crank type oscillating drive mechanism 31 includes a motor 61 provided with a gear coupled to a coupling base 60 provided on the support table 7 of the carrier; a crank arm 63 fixed to the motor provided with the gear The upper end portion of the output shaft 61a of 61; and the link 32 are rotatably coupled to the front end portion of the crank arm 63 by a pin 6 2 -11 - 200911459. The rotation of the output shaft 61a of the toothed motor 61 causes the pin 62 of the link 32 to rotate through the output axis 〇4 of the crank arm 63, thereby oscillating the swing arm 30 through the link 32. The link 32 includes a screwed portion 32a located in the middle so that the length of the link 32 can be adjusted in the manner of a telescopic nut. That is, the swing start position and the swing end position of the swing arm 30 can be changed by adjusting the length of the link 32. By using a single hole or a plurality of pin holes, it is possible to adjust the length of the crank arm 63, or the position of the 62 at the front end portion of the link 32, thereby adjusting the pin from the output shaft 61a of the motor provided with the gear The amount of deviation from the deviation. Therefore, the amount of swing (amplitude) of the swing arm 30 is adjusted. Fig. 5 shows a swaying drive mechanism 31 of § sheep. The pair of support wheels 50 have a distance in the swing directions B1 and B2, and a swing position detecting protrusion 70 is disposed on the leading edge edge portion of the swing arm between the support rollers 50. On the other hand, the pair of swing position detecting switches 72 are disposed to have a distance in the swing directions B1 and B2 against the leading edge edge surface of the swing arm 30. When the protruding portion 70 is close to each of the proximity switches 72, the proximity switch 72 can detect the swing start position and the swing end position of the arm 30. (Operation) (1) In Fig. 2, a plurality of low-profile workpieces (for example, piston rings having a thickness of 0.5 mm to 1.0 mm) W are loaded at the loading position A1, and the workpieces W are latched by the workpieces. Lock it up. In this state, the wheel-wound rod can be rolled 30 in the near-side equal-swing degree by the length of the pin 62. -12-200911459 Although the carrier disk 1 1 rotates in the direction of the arrow R around the rotation axis 〇2 of the carrier disk, The crank type oscillating drive mechanism 3 i swings the swing arm 3 绕 around the swing axis 03 in the direction of the arrows B1 and B2. (2) When the workpiece holding hole 18 reaches the loading position A 1 due to the rotation of the carrier disk 11, the workpiece w positioned at the bottom portion can be supplied into the workpiece holding hole 18. When the workpiece W fixed in the workpiece holding hole 18 passes through the gap between the inlet side lower guide table 21 and the inlet side upper guide table 22, the position of the workpiece W in the vertical direction is guided to be able to be fitted The gap between the grinding wheels 2 'the workpiece W can be inserted between the grinding wheels 2, and the upper and lower grinding wheels 2 can face honing the upper and lower end surfaces of the workpiece W. During the honing process, as previously described, the carrier disk 11 also oscillates about the pivot axis 03 as it rotates about the axis of rotation 02 of the carrier. Therefore, the workpiece w in the workpiece holding hole 18 will not form a simple arc-shaped conveying path, but a horizontally oscillating conveying path, and the workpiece W will pass between the grinding wheels 2. Therefore, uneven wear will not easily occur after long-term use, and high surface honing accuracy can be maintained. (3) After honing, the workpiece W discharged to the exit side of the workpiece passes between the outlet side lower guide table 23 and the outlet side upper guide table 24, and the workpiece W is at the unloading position A2 from the outlet side. The lower guide table 23 is dropped at the edge of the side in the rotational direction R and released, and is received by the lever member 14a of the workpiece receiving device 14, and then slipped forward and left. (4) The workpiece holding hole 18 after the processed workpiece w is unloaded therefrom is moved again to the loading position a 1, and the unprocessed workpiece W is again supplied into the workpiece holding hole 18. -13- 200911459 In the present embodiment, since the swing axis 〇3 of the swing arm 30 coincides with the center of the loading position Λ1, even if the swing arm 30 is tilted, the loading position does not change, and the workpiece holding hole 18 is forever Will pass the fixed loading position A1. Therefore, it is only necessary to fix the simple workpiece latching wall 13 belonging to the loading device 13 to this position, so that a simple structure can be realized. (Other Embodiments) (1) In the foregoing embodiment, the present invention is applied to an upright double-sided grinding machine in which the rotational axis of the grinding wheel is vertically disposed. However, the present invention can also be applied to a horizontal double-sided grinding machine in which the rotation axis of the grinding wheel is horizontally disposed. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing the entirety of a vertical double-sided grinding machine according to an embodiment of the present invention. Fig. 2 is an enlarged plan view showing the workpiece carrying device of the upright double-face grinding machine of Fig. 1. Fig. 3 is a cross-sectional view taken along line 111 -1 π in Fig. 2. Fig. 4 is a cross-sectional view taken along line IV-IV of Fig. 2. Fig. 5 is a cross-sectional view taken along line V-V of Fig. 4. [Main component symbol description] 1 : Grinder body 2 : Grinding wheel-14- 200911459 3 : Grinding wheel shaft 5 : Drive motor 7 : Carrier support table 1 0 : Work piece carrier 1 1 · 'Loading plate 1 2 : Carrier plate rotating shaft 1 3: loading device 1 3 a : workpiece latching wall 1 4 : workpiece receiving device 1 4 a : rod member 1 8 : workpiece holding hole 21 : inlet side lower guide table 22 : inlet side upper guide table 23 : outlet side Lower guide table 24: Outlet side upper guide table 3 〇: swing arm 3 0 a : base end portion 3 0 b : front end portion 3 1 : crank type oscillating drive mechanism 3 2 : link 3 2 : screw joint 3 4 : Connecting pin 36 : Swing support shaft 3 7 : Bearing -15 200911459 41 : 4 4 : 44a 47 : 48 : 50 : 51 : 60 : 61 : 6 1a 62 : 6 3 ·· 70 : 72 : A1 : A2 : 01 : 02 : 03 : 04 : R ·· W : Bearing carrier disc rotation drive motor: Output shaft fixing bracket Locking disc support roller rails Combination table Geared motor: Output shaft pin crank arm protrusion proximal switch Loading position unloading position grinding wheel axis carrier disk rotation axis swing axis output axis rotation direction -16-