200528207 (1) 九、發明說明 【發明所屬之技術領域】 本發明係關於適合使用於例如錶合金或欽合金 鋼、高張力鋼、熱處理鋼板等難加工材料的沖壓加 壓加工方法。 【先前技術】 Φ —般，沖壓加工係被分類爲衝孔加工、彎曲加 伸加工、成形加工、壓縮加工等，進而個別之加工 、 被分成：在加工前，將材料加熱至室溫以上後進行 •溫、熱狀態加工及在室溫加工材料之冷狀態加工。 且說，以沖壓加工來成形鎂合金、鈦合金、不 高張力鋼、熱處理鋼板等難加工材料之需要，今後 加的傾向。這些難加工材料的沖壓加工，如在冷狀 加工時，則會產生裂痕或龜裂故，以溫、熱狀態加 # 行爲佳。因此，在決定沖壓加工之良否上，將被加 如何加熱到特定的溫度變得很重要。此處，特別是 工材料爲局張力鋼的情形，基於彈回等的影響，非 沖壓成形爲特疋的尺寸故，近年來，被稱爲所謂的 淬火」之手法受到矚目。在此模壓淬火中，在決定 否上’將被加工材料如何冷卻至特定的溫度也變: 要。 習知上’在溫、熱狀態加工中，加熱被加工材 法則以：（A )利用加熱爐來加熱被加工材料的： Λ不錄 工之沖 工、引 方法係 加工之 録鋼、 會有增 態進行 工來進 工材料 在被加 常難於 「模壓 其之良 得很重 料的方 方法， -4 - 200528207 (2) (B )以藉由加熱器而被加熱保溫的模具來夾持被加工材 料以予以加熱的方法（例如，參考日本專利特開2G01 -25 2 729號公報。），（c )將模具本身當成電極，以該電 極兼模具夾持被加工材料而加以通電，藉由焦耳熱來加熱 之方法（參考專利第3 2 8 5 903號公報及日本專利特開平8-7 1 6 8 4號公報。），（d )以電極夾持被加工材料的兩端 予以通電’藉由焦耳熱來加熱的方法（參考例如日本專利 φ 特開號公報及特開2002-248525號公報。）等 爲所周知。在前述模壓淬火中，係在將被加工材料加熱至 、 特定溫度（例如90(TC )後進行沖壓成形後，藉由在下死 、點保持該被加工材料予以冷卻，在進行淬火的同時，也確 - 保特定的尺寸精度。 但是’在前述習知的（A )〜（D)之加熱方法及前述模 壓淬火中’對模具付與加壓力量之滑塊的移動係依據特定 的加熱時間（冷卻時間）或模具溫度、模具周邊環境等而 φ 事先所決定故，由於沖壓加工開始時或沖壓加工之暫時中 斷等所產生的模具溫度的過渡性變化，或氣溫的變化、被 加工材料的潤滑狀態等的影響，會有無法將被加工材料加 熱及/或冷卻爲特定溫度的情形。因此，會導致成形品的 惡化或尺寸精度的偏差，存在有無法適當地進行模壓淬火 之虞的問題點。 本發明係爲了解決此種問題點而所完成，目的在於提 供··可以補償模具溫度的過渡性變化或由於外部原因所致 之被加工材料的溫度變化，能確實地家被加工材料加熱及 200528207 (3) /或冷卻爲特定溫度，藉此，即使被加工材料爲Mg合金 或高張力鋼等之難加工材料，也可以提高沖壓成形的良品 率之同時’也能謀求成形品的尺寸精度的穩定化或模壓淬 火的最佳化之沖壓加工方法。 【發明內容】 爲了達成則述目的，依據本發明之沖壓加工方法，係 φ 使用具備有將被加工材料予以加熱之加熱手段及/或將被 加工材料予以冷卻之冷卻手段所成之模具並且能夠把對於 、 該模具施加加壓力之滑塊以任意移動條件加以驅動所構成 、之沖壓機械，進行包含由上述加熱手段來加熱被加工材料 • 之加熱程序及/或由上述冷卻手段來冷卻被加工材料之冷 卻程序之沖壓加工程序的沖壓加工方法，其特徵爲： 使上述加熱程序及/或冷卻程序和上述滑塊的移動連 動進行’且藉由依據來自檢測被加工材料的溫度之溫度檢 φ 測手段的溫度資訊，而調整該移動的速度，將被加工材料 加熱及/或冷卻爲目標溫度。 在本發明中，對於被加工材料的加熱程序及/或冷卻 程序係與滑塊的移動連動而進行，且藉由依據來自檢測被 加工材料的溫度之溫度檢測手段的溫度資訊，該移動的速 度被調整，被加工材料被加熱及/或冷卻爲目標溫度。因 此’可以補償沖壓加工開始時或沖壓加工之暫時中斷時等 所產生的模具溫度之過渡性變化，或氣溫的變化、被加工 材料的潤滑狀態等的影響所導致之被加工材料的溫度變 - 200528207 (4) 化，能將被加工材料確實加熱及/或冷卻爲特定溫度。如 此，在加熱程序中’可以將被加工材料確實地加工爲特定 溫度故’即使被加工材料爲鎂合金、鈦合金、不銹鋼、高 張力鋼、熱處理鋼板等難加工材料，也可以容易地進行沖 壓成形’目b夠提局良品率。另一方面，在冷卻程序中，可 以確實地將被加工材料冷卻爲特定溫度故，可以謀求成形 品的尺寸精度的穩定化或模壓淬火的最佳化。 φ 在本發明中，前述加熱手段最好係由具有對被加工材 料通以電流所需要的電極而構成，前述加熱程序係藉由在 、 由前述電極對於被加工材料之小電流的通電，確認前述電 、極和被加工材料密接後，藉由從前述電極對於被加工材料 •之大電流的通電，以加熱被加工材料之通電加熱所進行。 如此一來’在藉由從電極對於被加工材料之小電流的 通電’而確認電極和被加工材料密接後，才藉由從電極對 於被加工材料通以大電流’使得被加工材料被通電加熱 φ 故’可以確實地防止由於電極對於被加工材料之密接不足 所致之火花的產生。 【實施方式】 接著’參考圖面說明依據本發明之沖壓加工方法的具 體之實施形態。 第1圖係顯示關於本發明之一實施形態之沖壓機械的 槪略系統構造圖。 關於本實施形態之沖壓機械（伺服沖床）1，係藉由 -7- 200528207 (5) 將伺服馬達2當成驅動源之滑塊驅動機構3而可在上下方 向以任意的移動來驅動滑塊4所構成。在此沖壓機械1 中，在滑塊4和模座5之間係設置有依工程順序將複數的 模具排成一列所形成之連續模具6，藉由省略圖示之材料 供給裝置對於被送入該連續模具6內之被加工材料7，藉 由前述滑塊4之上下驅動以進行順向進給加工。此處，前 述伺服馬達2可以是交流馬達或直流馬達之其一。另外， φ 作爲將前述伺服馬達2的旋轉力量傳達給滑塊驅動機構3 之旋轉力傳達構件8，係採用時規皮帶或鍊條、齒輪等。 、 另外，作爲前述滑塊驅動機構3則係採用：使用將伺服馬 •達2的旋轉力量轉換爲往復運動的滾珠螺桿之直向動作機 .構、組合蝸杆和蝸齒輪所構成之直向動作機構、組合小齒 輪和齒條所構成之直向動作機構、曲柄桿機構、連桿機構 前述伺服馬達2係被輸入有來自具有資料的記憶或運 φ 算處理、資料的顯示、資料的輸入輸出等各種功能所形成 的沖床驅動控制裝置9之伺服馬達驅動訊號。另外，在此 伺服馬達2例如附設有脈衝產生器之檢測旋轉速度的速度 檢測手段】0，藉由此速度檢測手段1 0所被檢測之伺服馬 達2的旋轉速度，換言之，滑塊4之速度資訊則被輸入前 述沖床驅動控制裝置9。 第1加工台11、通電加熱台12、第2加工台13、冷 卻台1 4及第3加工台1 5係由圖中記號F所示之材料進給 方法的上流側起依序分別設置在前述連續模具6上。 -8- 200528207 (6) 在前述第1加工台1 1係配置有對於被加工材料7進 行衝孔加工之衝孔加工用模具丨6。另外，在前述通電加熱 台1 2配置有加熱被加工材料7之通電加熱用模具（加熱 手段）17’在前述第2加工台13配置有對於被加工材料7 朝向上方進行圓筒引伸加工之圓筒引伸加工用模具1 8，在 前述冷卻台1 4配置有冷卻被加工材料7之冷卻用模具 (冷卻手段）1 9 ’在前述第3加工台1 5配置有對於被加 φ 工材料7進行修整之修整用模具2 0。 前述各加工用模具16、18、20及通電加熱用模具17 、 以及冷卻用模具1 9的各下模1 6 a〜2 0 a係一面承受壓縮螺 、旋彈簧的彈力，一面藉由導引構件（皆省略圖示）之導引 • 而沿著各模具16〜20之動作方向（上下方向）可以移動 地被安裝在固定於模座5之上面的下部基板2〗的上面。 如此’特別7E在通電加熱用模具1 7中，可緩和後述的電 極25可通電地和被加工材料7接觸時的衝擊力，能謀求 Φ 電極2 5、被加工材料7等之保護的同時，也能良好地保持 電極2 5和被加工材料7的接觸狀態，另外，藉由調整電 極25和被加工材料7可通電地接觸之接觸位置，能夠調 整電極2 5和被加工材料7之接觸時間（通電時間）而調 整加熱時間。另外’也代替前述壓縮螺旋彈簧而使用氣墊 /緩衝窃或模具緩衝銷、油壓、空壓機構等。 另一方面’前述各加工用模具16、18、20及通電加 熱用模具]7以及冷卻用模具19之個別的上模16b〜2 Ob係 被女裝在固疋5令滑塊4的下面之上部基板22的下面。而 冬 200528207 (7) 圖 柱 正 具 溫 通 被 被 裝 9b 材 體 通 電 電 熱 電 驅 依 値 資 且，在前述下部基板2 1和上部基板2 2之間介設有省略 示之導引柱，上部基板22係對於下部基板2 ；[被該導引 所導引而上下動作，各模具16〜20之定位可以圓滑且 確地進行。 在前述通電加熱用模具17之上模17b及冷卻用模 1 9的上模1 9 b係分別設置有檢測被加工材料7的溫度之 度感測益（溫度檢測手段）23、24。而且，藉由設置在 φ 電加熱用模具1 7的上模1 7b之溫度感測器2 3所檢測的 加工材料（成形前被加工材料）7的加熱溫度資訊分別 輸入前述沖床驅動控制裝置9以及後述的通電加熱控制 置27。另一方面，藉由設置在冷卻用模具1 9的上模1 的溫度感測器2 4所檢測的被加工材料（形成後被加工 料）7的冷卻溫度資訊被輸入前述沖床驅動控制裝置9。 在前述通電加熱用模具1 7的下模1 7 a係藉由絕緣 2 6而安裝有對被加工材料7通以電流所需要的電極25 φ 這些電極2 5係電性連接於控制施加電壓和供給電流的 電加熱控制裝置2 7。在此通電加熱控制裝置2 7和前述 極2 5間的配線上分別設置有電壓計2 8及電流計2 9，由 壓計2 8的測量結果所獲得之電壓値資訊被輸入通電加 控制裝置27的同時，由電流計29的測量結果所獲得之 流値資訊分別被輸入通電加熱控制裝置2 7及前述沖床 動控制裝置9。而且，在前述通電加熱控制裝置27中， 據被輸入該通電加熱控制裝置2 7之電壓値資訊、電流 資訊、被加工材料（成形前被加工材料）7的加熱溫度 -10- 200528207 (8) 曰、以及來自沖床驅動控制裝置9之啓動、停止訊號，而 控制供應纟P則述電極2 5之電壓。此處，爲了更有效率地 加熱被加工材料（成形前被加工材料）7，前述電極2 5係 因應對於被加工材料（成形前被加工材料）7在第2加工 台】3施以圓筒引伸加工後需要加熱之部位而配置。另 外’對應那些電極2 5的配置而在通電加熱用模具1 7的上 模17b安裝有所需要的絕緣體30。 φ 在構成前述冷卻用模具19之上下各模具i9b、19a係 形成有被通以冷卻劑之模具冷卻用管路3 1。各模具冷卻用 - 管路3 1係連接在給排控制冷卻劑之冷卻控制裝置3 2，冷 卻劑得以在各模具冷卻用管路3 1和冷卻控制裝置32之間 循環。另外，在連接各模具冷卻用管路3 1和冷卻控制裝 置3 2之配管上係設置有溫度計3 3，由各溫度計3 3的測量 結果所獲得之溫度資訊係被輸入冷卻控制裝置3 2。而且， 在此冷卻控制裝置3 2中，依據被輸入該冷卻控制裝置3 2 φ 的溫度資訊，而控制冷卻劑的溫度及流速。 在前述滑塊4及模座5中，由線性感測器等所構成之 滑塊位置檢測手段3 4的構成構件係分別安裝在特定的位 置。即此滑塊位置檢測手段3 4係由：軸方向與滑塊4的 上下方向相平行而安裝在模座5之線性光學尺3 5，及位在 和此線性光學尺3 5相對位置而安裝在滑塊4之檢測頭3 6 所構成，伴隨滑塊4之上下動作，檢測頭3 6對於線性光 學尺3 5而上下動作，藉此，將滑塊4的位置當成由模座5 的上面之高度而由組裝在檢測頭3 6的內部之感測器所檢 -11 - 200528207 (9) 測。而且，此滑塊4的位置資訊係被輸入前述沖床 制裝置9。 在本實施形態中，滑塊4的移動係依據：（a 前述滑塊位置檢測手段3 4的滑塊位置資訊，（b ) 述速度檢測手段1 〇之滑塊速度資訊，（c )來自溫 器2 3之加熱溫度資訊，（d )來自溫度感測器2 4 溫度資訊，及（e )來自電流計2 9之電流値資訊， φ 驅動控制裝置9進行運算處理，依據此運算處理， 該沖床驅動控制裝置9所輸出的伺服驅動訊號，伺 . 2的旋轉速度受到控制而被加以控制。 ' 接著’在以下說明使用如前述構造之沖壓機械 * 貫施形態的沖壓加工工程的內容。 首先’對於藉由省略圖示之材料供給裝置而被 ’繪模具6內之被加工材料7，在第1加工台η中， 孔加工衝去該被加工材料7的成形預定部位的外圍 ♦ 工程）°之後，在通電加熱台12中，藉由通電加 工材料7的成形預定部位，加熱爲特定溫度（通電 序）。另外’在此通電加熱程序中，作爲最佳加熱 度，例如被加工材料7的材質爲鎂合金的情形，爲 〜3 5 0 C ’在S U S 3 0 4的情形，爲！ 〇 〇〜1 5 〇艽， 力鋼、熱處理鋼板的情形，爲9 〇 〇 〇c的程度。 丰妾者’對於在則述通電加熱程序中被加熱的被 料7 ’在第2加工台〗3中，施以圓筒引伸加工，將 材料7成形爲杯狀（成形工程）。之後，在冷卻 驅動控 )來自 來自前 度感測 之冷卻 由沖床 藉由從 服馬達 1的本 送入連 藉由衝 (衝孔 熱被加 加熱程 目標溫 25 0 〇C 在高張 加工材 被加工 -12- 200528207 (10) 中，將被成形爲杯狀的被加工材料7冷卻至特定溫度（冷 卻程序）。而且，對於經過此冷卻程序的被加工材料7， 在第3加工台1 5中進行修整，分離爲成形品和廢料（修 整工程）。另外，在對於被加工材料7施以模壓淬火之情 形’前述成形工程和冷卻程序係在一個工作台進行。 接著，主要利用第2圖之滑塊移動說明圖，及第3圖 以及第4圖的連續模具動作狀態說明圖，在以下說明進行 φ 前述沖壓加工工程時之滑塊移動。 此處’在第2圖之滑塊移動說明圖中，橫軸表示時 • 間’縱軸表示滑塊的高度位置。另外，記號A所示之點爲 - 上死點’記號B所示之點爲衝孔工程及修整工程分別開始 * 之衝孔加工工程開始點，記號C所示之點爲衝孔加工工程 及修整工程結束之衝孔加工工程結束點，記號D所示之點 係通電加熱程序開始之通電加熱程序開始點，記號]£所示 之點爲成形工程及冷卻程序開始之成形、冷卻程序開始 φ 點’記號F所示之點係成形工程結束之下死點。另外，記 號G所示之點係確認通電加熱台1 2之被加工材料（成形 前被加工材料）7的現在加熱溫度及冷卻台1 4的被加工材 料（成形後被加工材料）7的現在冷卻溫度之加熱、冷卻 溫度確認點’記號H(H，）所示之點係通電加熱程序及冷卻 程序結束之通電加熱、冷卻程序結束點，記號1(1，）所示之 點係1循環結束後的上死點。 如第2圖所示般，滑塊4由上死點A的狀態（參考第 3 ( a )圖）至衝孔加工開始點B之前，係以最快速度下 -13- 200528207 (11) 降。接者’由衝孔加工開始點B至衝孔加工結束點c之 間’滑塊4係進行衝孔加工及修整工程，以最適當速度下 降，在此點B - C間，對於被加工材料7分別進行衝孔加工 及修整工程（參考第3 ( b )圖）。接著，在由衝孔加工結 束點C至通電加熱開始點D之間，爲了使電極2 5接觸被 加工材料7時的衝擊變小以延長電極2 5的壽命，滑塊4 係以低速下降。在此點C - D間，藉由節受來自沖床驅動控 • 制裝置9之特定啓動訊號而被啓動之通電加熱控制裝置 2 7，微小的電壓被施加於電極2 5，伴隨電極2 5和被加工 • 材料7相接觸（參考第3 ( c )圖），由電極2 5對於被加 - 工材料7通以小電流。此小電流之通電完成，係藉由來自 ♦電流計2 9的電流値資訊而被沖床驅動控制裝置9所辨 識，藉此，沖床驅動控制裝置9判斷電極2 5和被加工材 料7完全地接觸。而且，依據此判斷，沖床驅動控制裝置 9在通電加熱開始點中對於被加工材料7輸出特定的啓動 φ 訊號’接受此種啓動訊號’通電加熱控制裝置2 7對於電 極2 5供給大電流。如此，由電極2 5對於被加工材料7通 以大電流，開始被加工材料7的通電加熱程序。 此通電加熱程序開始後，滑塊4直到成形工程開始點 E之前，再度以高速下降。接著，在由成形工程開始點e 至成形工程結束之下死點F之間，滑塊4係進行圓筒引伸 加工，以最適當速度下降，在此點E - F間，對於被加工材 料7進行圓筒引伸加工（參考第3 ( d )圖及第4(a) 圖）。另外，在此點E - F間，在成形工程的同時，也同時 -14- 200528207 (12) 進行通電加熱程序及冷卻程序。 而且’滑塊4在由下死點F至加熱、冷卻溫度確認點 G爲止’以特定速度上升。在此加熱、冷卻溫度確認點〇 中，於通電加熱台〗2中，電極2 5係與被加工材料（成形 則被加工材料）7接觸之狀態，同時，在冷卻台1 4中，冷 卻用模具1 9係與被加工材料（成形後被加工材料）7接觸 的狀態（參考第4 ( b )圖），在此種狀態下，沖床驅動控 制裝置9藉由來自溫度感測器23的加熱溫度資訊及溫度 感測器24的冷卻溫度資訊，確認通電加熱台1 2的被加工 材料（成形前被加工材料）7的現在加熱溫度及冷卻台j 4 的被加工材料（成形後被加工材料）7的現在冷卻溫度。 此時，被加工材料（成形前被加工材料）7的現在加熱溫 度或者被加工材料（成形後被加工材料）7的現在冷卻溫 度沒有到達目標的加熱溫度或者冷卻溫度的情形，則持續 通電加熱程序或冷卻程序，如以連結點G-H間之實線所示 般，令滑塊4的速度爲零，或者如以連結點G_H，間所示 之一點虛線所示般，使滑塊4的上升速度變慢等，藉由調 整 ')胃塊移動的速度，將成形前的被加工材料7或者成形後 的被加工材料7加熱或冷卻爲目標溫度。另外，在點d_h 間，藉由基於通電加熱控制裝置27之控制，在通電加熱 時間（區間D-Η的時間軸）內，將被加工材料（成形前被 加工材料）7加熱爲目標的加熱溫度所必要的電流被供應 給電極25之同時，在被加工材料（成形前被加工材料）7 被加熱爲目標的加熱溫度時，該供給電流被切斷。如此， -15- 200528207 (13) 可局精度而有效率地進行通電加熱程序。 如前述般，在本實施形態中，對於被加工材料7之通 電加熱程序及/或冷卻程序係與滑塊4的移動連動而進 行，且依據檢測被加工材料7的溫度之溫度感測器2 3、2 4 的溫度資訊，以調整滑塊4的移動速度，藉此，被加工材 料7被加熱、冷卻爲目標溫度。因此，可以補償沖壓加工 開始時或沖壓加工的暫時性中斷時等所產生的模具溫度之 φ 過渡性變化，將被加工材料7確實地加熱、冷卻爲特定溫 度。如此，在通電加熱程序中，可將被加工材料（成形前 . 被加工材料）7確實加熱爲特定溫度故，即使被加工材料 7爲鎂合金、鈦合金、不銹鋼、高張力鋼、熱處理鋼板等 • 之難加工材料，也可以容易地進行沖壓成形，可提高良品 率。另一方面’在冷卻程序中，可以確實地將被加工材料 (成形後被加工材料）7冷卻爲特定溫度故，可以謀求成 形品的尺寸精度之穩定化，或模壓淬火的最佳化。 φ 另外，在第2圖的點C-D間，藉由從電極25對於被 加工材料7之小電流的通電，在確認電極25和被加工材 料7密接後’於同圖之點D-H(H’）間，藉由從電極25對於 被加工材料7通以大電流，被加工材料7被通電加熱故， 可以達成確實防止由於電極25對於被加工材料7之密接 不足所引起的火花產生之效果。 【圖式簡單說明】 第I圖係關於本發明之一實施形態的沖壓機械的槪略 > 16 - 200528207200528207 (1) IX. Description of the invention [Technical field to which the invention belongs] The present invention relates to a method of pressing and pressing suitable for difficult-to-machine materials such as surface alloys or chitin alloy steels, high-tensile steels, and heat-treated steel plates. [Previous technology] Φ-Generally, stamping processing is classified into punching, bending and extension processing, forming processing, compression processing, etc., and then individual processing, is divided into: before processing, after heating the material to room temperature or more Performs warm and hot processing and cold processing of materials processed at room temperature. In addition, the need to form difficult-to-machine materials such as magnesium alloys, titanium alloys, non-high-tensile steels, and heat-treated steel sheets by press processing will increase in the future. The stamping of these difficult-to-machine materials, such as cold processing, may cause cracks or cracks. Therefore, it is good to add # in a warm and hot state. Therefore, in determining the goodness of the stamping process, it becomes important how to be heated to a specific temperature. Here, especially in the case where the work material is a local tension steel, non-punching forming is a special size due to the influence of springback and the like. In recent years, a technique called "quenching" has attracted attention. In this compression hardening, how to cool the material to be processed to a specific temperature also changes in determining whether to: No. Conventionally, in the processing of warm and hot states, the rules for heating the material to be processed are: (A) The heating material is used to heat the material to be processed: Λ non-recorded punch, the method of processing is the recorded steel, there will be The process of adding materials to the process is often difficult to "mould its good weight." -4-200528207 (2) (B) is held by a mold that is heated and held by a heater. A method for heating the material to be processed (for example, refer to Japanese Patent Laid-Open No. 2G01-25-25729). (C) The mold itself is used as an electrode, and the electrode and the mold are used to hold the material to be processed, and the current is applied. Method for heating by Joule heat (refer to Patent No. 3 2 8 5 903 and Japanese Patent Laid-Open No. 8-7 1 6 8 4), (d) energizing both ends of the material to be processed by electrodes and applying electricity 'A method of heating by Joule heat (refer to, for example, Japanese Patent φ Laid-Open Publication and Japanese Patent Laid-Open Publication No. 2002-248525) is well-known. In the aforementioned press hardening, the material to be processed is heated to a specific state. After the temperature (such as 90 (TC)) After the press forming, the material to be processed is cooled by holding it at the bottom point, and the specific dimensional accuracy is ensured at the same time as the quenching is performed. However, in the conventional heating methods (A) to (D), And in the aforementioned press hardening, the movement of the slider that applies pressure to the mold is determined in advance according to a specific heating time (cooling time), mold temperature, mold surrounding environment, etc. Therefore, it is due to the start of stamping or stamping. The temporary changes in mold temperature caused by temporary interruptions in processing, changes in air temperature, and the lubricating state of the material being processed may not be able to heat and / or cool the material being processed to a specific temperature. Therefore, This may lead to deterioration of the molded product or variation in dimensional accuracy, and there is a problem that the mold hardening may not be appropriately performed. The present invention is made to solve such a problem, and the purpose is to provide a compensation for the transition of the mold temperature. Changes in the temperature of the material being processed due to changes in nature or due to external reasons, the material being heated can be reliably heated at home and 200528207 (3) It is possible to increase the yield rate of press forming and improve the dimensional accuracy of the molded product, even if the material to be processed is a difficult-to-machine material such as Mg alloy or high-tensile steel. Optimized stamping method for die hardening. [Summary of the Invention] In order to achieve the stated purpose, according to the stamping method of the present invention, φ uses a heating means for heating the material to be processed and / or the material to be processed. A stamping machine constructed by cooling the mold formed by the cooling means and capable of driving a slider that applies pressure to the mold under arbitrary moving conditions, performs a heating process including heating the material to be processed by the heating means described above. And / or a punching method of a punching process for cooling the material to be processed by the cooling means, characterized in that: the heating process and / or the cooling process are performed in conjunction with the movement of the slider; and Temperature information from the temperature detection φ measuring means that detects the temperature of the material being processed, and adjust the The moving speed of the workpiece heating and / or cooling target temperature. In the present invention, the heating process and / or cooling process for the material to be processed is performed in conjunction with the movement of the slider, and the speed of the movement is based on the temperature information from the temperature detection means for detecting the temperature of the material to be processed. It is adjusted, and the material to be processed is heated and / or cooled to a target temperature. Therefore, 'can compensate for the transient change of the mold temperature caused by the start of the stamping process or the temporary interruption of the stamping process, etc., or the change in the temperature of the processed material caused by the influence of the change in air temperature, the lubrication state of the processed material- 200528207 (4) It can heat and / or cool the material to be processed to a specific temperature. In this way, in the heating program, 'the material to be processed can be reliably processed to a specific temperature,' even if the material to be processed is a difficult-to-machine material such as magnesium alloy, titanium alloy, stainless steel, high tension steel, and heat-treated steel plate, it can be easily punched. Forming 'head b' is enough to improve the yield rate. On the other hand, in the cooling process, the material to be processed can be reliably cooled to a specific temperature, so that it is possible to stabilize the dimensional accuracy of the molded product or optimize the press hardening. φ In the present invention, it is preferable that the heating means is composed of an electrode required to pass current to the material to be processed, and the heating procedure is confirmed by applying a small current to the material to be processed by the electrode. After the electricity, the electrode and the material to be processed are tightly contacted, the current is applied to the material to be processed from a large current through the electrode to heat the material to be processed. In this way, after confirming that the electrode and the material are tightly connected by energizing the small current of the electrode from the electrode, the material to be processed is energized and heated by passing a large current from the electrode to the material to be processed. φ Therefore, it is possible to reliably prevent sparks caused by insufficient contact between the electrode and the material being processed. [Embodiment] Next, a specific embodiment of the press working method according to the present invention will be described with reference to the drawings. Fig. 1 is a diagram showing a schematic system configuration of a press machine according to an embodiment of the present invention. Regarding the press machine (servo press) 1 of this embodiment, the slider 4 can be driven in any direction in the vertical direction by using the servo drive 2 as a drive source of the slider drive mechanism 3 as of -7-200528207 (5) Made up. In this press machine 1, a continuous mold 6 formed by arranging a plurality of molds in a row according to an engineering order is provided between the slider 4 and the mold base 5. The material 7 to be processed in the continuous mold 6 is driven up and down by the slider 4 to perform forward feed processing. Here, the aforementioned servo motor 2 may be one of an AC motor or a DC motor. In addition, as the rotational force transmitting member 8 that transmits the rotational force of the servo motor 2 to the slider driving mechanism 3, φ adopts a timing belt, a chain, a gear, or the like. In addition, as the slider driving mechanism 3 described above, a straight action mechanism using a ball screw that converts the rotational force of the servo motor 2 to a reciprocating motion. A structure composed of a worm and a worm gear The motion mechanism, the combination of pinion and rack, the direct motion mechanism, the crank lever mechanism, and the link mechanism. The aforementioned servo motor 2 is input from the memory with data or calculation processing, data display, and data input. The servo motor drive signal of the punch drive control device 9 formed by various functions such as output. In addition, here, the servo motor 2 is provided with, for example, a speed detection means for detecting the rotation speed of the pulse generator] 0, and the rotation speed of the servo motor 2 detected by the speed detection means 10, in other words, the speed of the slider 4 The information is input to the aforementioned punch drive control device 9. The first processing table 11, the electric heating table 12, the second processing table 13, the cooling table 14 and the third processing table 15 are sequentially arranged from the upper side of the material feeding method shown by the symbol F in the figure. On the aforementioned continuous mold 6. -8- 200528207 (6) The first processing table 11 is provided with a punching die 6 for punching a workpiece 7. In addition, an electric heating mold (heating means) 17 ′ for heating the work material 7 is disposed on the current-heating heating table 12, and a circle for performing cylindrical extension processing of the work material 7 upward is disposed on the second processing table 13. The cylinder extension processing mold 18 is provided with a cooling mold (cooling means) 1 9 for cooling the work material 7 on the cooling table 14, and the third processing table 15 is provided with a work tool 7 to which φ is added. The trimming mold 20 is used for trimming. Each of the processing molds 16, 18, and 20, and the heating mold 17 and the lower molds 16a to 20a of the cooling mold 19 are subjected to the elastic force of the compression screw and the coil spring while being guided by the guide. Guidance of components (both are not shown in the figure) • It is movably mounted on the lower base plate 2 fixed to the upper surface of the mold base 5 along the movement direction (up and down direction) of each of the molds 16-20. In this way, the “special 7E” can reduce the impact force when the electrode 25 described later can be contacted with the work material 7 while being energized in the current heating mold 17, and can protect the Φ electrode 25 and the work material 7. The contact state between the electrode 25 and the work material 7 can be maintained well, and the contact time between the electrode 25 and the work material 7 can be adjusted by adjusting the contact position where the electrode 25 and the work material 7 can be contacted with electricity. (Power-on time) and adjust the heating time. In addition, instead of the compression coil spring, an air cushion / cushion or a mold cushion pin, an oil pressure, an air pressure mechanism, and the like are used. On the other hand, each of the aforementioned processing molds 16, 18, and 20 and the heating heating mold] 7 and the cooling mold 19 have respective upper molds 16b ~ 2 Ob, which are placed under the fixing 5 and the slider 4 by women's clothing. The lower surface of the upper substrate 22. And winter 200528207 (7) The figure column is equipped with a 9b material, electric heating, electric drive, and electric drive, and an omitted guide pillar is interposed between the lower substrate 21 and the upper substrate 22. The upper substrate 22 is relative to the lower substrate 2; [guided by this guide to move up and down, the positioning of each mold 16 to 20 can be smoothly and accurately performed. The upper die 17b of the electric heating mold 17 and the upper die 19b of the cooling die 19 are provided with temperature sensing means (temperature detecting means) 23 and 24 for detecting the temperature of the material 7 to be processed, respectively. Furthermore, the heating temperature information of the processed material (processed material before molding) 7 detected by the temperature sensor 2 3 provided on the upper mold 17 7b of the φ electric heating mold 17 is input to the aforementioned punch drive control device 9 respectively. And the electric heating control set 27 described later. On the other hand, the cooling temperature information of the processing material (processed material) 7 detected by the temperature sensor 2 4 provided on the upper mold 1 of the cooling mold 19 is input to the aforementioned punch drive control device 9. . The lower die 1 7 a of the aforementioned electric heating mold 17 is provided with an electrode 25 φ required to pass current to the work material 7 through insulation 2 6. These electrodes 2 5 are electrically connected to control the applied voltage and Electric heating control device 27 for supplying electric current. A voltage meter 28 and a current meter 29 are respectively provided on the wiring between the current heating control device 27 and the foregoing poles 25, and the voltage and information obtained from the measurement results of the voltage meter 28 are input to the power on and control device. At the same time as 27, the flow information obtained from the measurement result of the ammeter 29 is input to the energization heating control device 27 and the aforementioned punch control device 9 respectively. Furthermore, in the aforementioned energized heating control device 27, according to the voltage, current, and current information input to the energized heating control device 27, and the heating temperature of the work material (work material before forming) 7-10-200528207 (8) That is, the start and stop signals from the punch drive control device 9, and the control supply 纟 P refers to the voltage of the electrode 25. Here, in order to heat the material to be processed (processed material before forming) 7 more efficiently, the electrodes 25 are applied to the material (processed material before forming 7) on the second processing table] 3 Placed on the parts that need to be heated after the drawing process. In addition, corresponding insulators 30 are mounted on the upper mold 17b of the current-heating mold 17 according to the arrangement of those electrodes 25. φ Each of the molds i9b and 19a constituting the cooling mold 19 is formed with a mold cooling pipe 31 through which a coolant is passed. Each mold cooling-line 31 is connected to the cooling control device 32 for supplying and discharging the control coolant, and the coolant can be circulated between each mold cooling line 31 and the cooling control device 32. In addition, a thermometer 33 is provided on a pipe connecting each of the mold cooling pipes 31 and the cooling control device 32, and the temperature information obtained from the measurement results of each thermometer 33 is input to the cooling control device 32. The cooling control device 32 controls the temperature and flow rate of the coolant based on the temperature information input to the cooling control device 3 2 φ. In the slider 4 and the die holder 5, constituent members of the slider position detecting means 34 composed of a linear sensor or the like are mounted at specific positions, respectively. That is, the slider position detection means 3 4 is composed of a linear optical rule 3 5 mounted on the mold base 5 with an axis direction parallel to the vertical direction of the slider 4, and installed at a position opposite to the linear optical rule 35. The detection head 3 6 of the slider 4 is configured to move up and down with the slider 4. The detection head 3 6 moves up and down with respect to the linear optical scale 35, thereby taking the position of the slider 4 as the top of the mold base 5. The height is measured by a sensor assembled inside the detection head 36-11-200528207 (9). The position information of the slider 4 is input to the aforementioned punching machine 9. In this embodiment, the movement of the slider 4 is based on: (a the slider position information of the aforementioned slider position detection means 34, (b) the slider speed information of the speed detection means 10, and (c) from the temperature The heating temperature information of the device 2 3, (d) temperature information from the temperature sensor 2 4 and (e) current current information from the ammeter 29, φ drives the control device 9 to perform arithmetic processing. According to this arithmetic processing, the The servo drive signal output from the punch drive control device 9 is controlled to control the rotation speed of the servo 2. 'Next' The following describes the details of the press working process using a press machine of the above-mentioned structure * perforation. First, 'For the material 7 to be drawn in the mold 6 by using a material supply device (not shown), in the first processing table η, a hole is punched to remove the periphery of the planned forming portion of the material 7. After that, in the energized heating table 12, a predetermined temperature is formed by energizing the processing material 7 at a predetermined temperature (the energization sequence). In addition, in this electric heating program, as the optimal heating degree, for example, when the material of the material 7 to be processed is a magnesium alloy, it is ~ 3 5 0 C ′, and in the case of S U S 3 0 4, it is! In the case of force steel and heat-treated steel sheet, the temperature is about 900 c. The "best person" applies a cylindrical drawing process to the material 7 heated in the electric heating program described above, and the material 7 is formed into a cup shape (forming process). After that, in the cooling drive control, the cooling from the previous sensing is sent by the punch through the servo motor 1 and the punching (punching heat is increased by the heating range target temperature of 25 0 ° C in the high-tension processing material). Machining-12- 200528207 (10), the material 7 to be processed into a cup is cooled to a specific temperature (cooling process). The material 7 to be processed after this cooling process is processed on the third processing table 1 5 During the trimming process, separation into formed products and scraps (trimming process). In the case where the work material 7 is subjected to press hardening, the aforementioned forming process and cooling process are performed on a single table. Next, FIG. 2 is mainly used. The slider movement explanatory diagrams and the continuous mold operation state explanatory diagrams of FIGS. 3 and 4 are described below. The slider movement when the aforementioned φ press processing is performed is described below. Here, the slider movement description in FIG. 2 In the figure, the horizontal axis represents the time and time. The vertical axis represents the height of the slider. In addition, the point shown by symbol A is-top dead point. The point shown by symbol B is when punching and trimming are started *. Hole processing project start point, the point shown by symbol C is the end of the punching process and the end of the punching process and the trimming process. The point shown by the symbol D is the start point of the electric heating process at the start of the electric heating process. The points shown are the start of the forming process and the cooling process. The point shown by the start of the forming process and the cooling process. The point indicated by the symbol F is the dead point at the end of the forming process. In addition, the point indicated by the symbol G is the confirmation of the energized heating stage. The current heating temperature of the processed material (processed material before molding) 7 and the current cooling temperature of the processed material (processed material after molding) 7 of the cooling table 14 The heating and cooling temperature confirmation points of the current cooling temperature 7 mark H (H, The point shown by) is the end point of the heating and cooling process when the heating and cooling process is completed. The point shown by the symbol 1 (1,) is the top dead point after the end of 1 cycle. As shown in Figure 2, Slider 4 moves from the top dead center A (refer to Figure 3 (a)) to the punching start point B at a maximum speed of -13- 200528207 (11). The receiver is processed by punching Start point B to punching end point c The 'slider 4' is punched and trimmed at the most appropriate speed, and at this point B-C, punched and trimmed for the material 7 (see Figure 3 (b)). ). Between the punching end point C and the electric heating start point D, in order to reduce the impact of the electrode 25 when it contacts the material 7 to prolong the life of the electrode 25, the slider 4 is at a low speed. At this point, between C and D, the electric heating control device 2 7 which is activated by saving the specific start signal from the punch drive control device 9 is applied, and a minute voltage is applied to the electrode 2 5 and the electrode 2 5 is in contact with the processed material 7 (refer to Figure 3 (c)), and a small current is applied to the processed material 7 by the electrode 2 5. The energization of this small current is completed, and it is recognized by the punch drive control device 9 by the current 値 information from the galvanometer 29, whereby the punch drive control device 9 determines that the electrodes 25 and the workpiece 7 are in full contact. . Further, based on this judgment, the punch drive control device 9 outputs a specific start signal φ to the material 7 at the start point of the energization heating. The signal "accepts such an activation signal" is supplied to the electrode 25 by a large current. In this way, a large current is applied to the work material 7 from the electrodes 25, and the current-heating process of the work material 7 is started. After this electric heating process is started, the slider 4 is lowered at a high speed again until the forming process start point E. Next, from the starting point e of the forming process to the dead point F below the end of the forming process, the slider 4 is subjected to cylindrical extension processing and descends at the most appropriate speed. Between this point E and F, for the material to be processed 7 Perform cylindrical drawing (refer to Figure 3 (d) and Figure 4 (a)). In addition, at this point E-F, at the same time as the forming process, at the same time -14- 200528207 (12) the electric heating program and the cooling program are performed. The "slider 4 rises from the bottom dead center F to the heating and cooling temperature confirmation point G" at a specific speed. In this heating and cooling temperature confirmation point 〇, in the electric heating table 2, the electrode 25 is in a state in contact with the material to be processed (formed to be processed) 7, and at the same time, the cooling table 14 is used for cooling The mold 1 9 is in a state in contact with the material to be processed (processed material after molding) 7 (refer to FIG. 4 (b)). In this state, the punch drive control device 9 is heated by the temperature sensor 23 The temperature information and the cooling temperature information of the temperature sensor 24 confirm the current heating temperature of the material to be processed (processed material before molding) 7 which is energized to the heating table 12 and the material to be processed (processed material after molding) 7 ) 7's current cooling temperature. At this time, if the current heating temperature of the work material (work material before forming) 7 or the current cooling temperature of the work material (work material after forming) 7 does not reach the target heating temperature or cooling temperature, the current is continuously heated. The program or cooling program, as shown by the solid line between the connection points GH, makes the speed of the slider 4 to zero, or as shown by the dotted line between the connection points G_H, and the slider 4 is raised By slowing down the speed, etc., by adjusting the speed at which the stomach mass moves, the processed material 7 before molding or the processed material 7 after molding is heated or cooled to a target temperature. In addition, during the point d_h, the target heating is performed by heating the material to be processed (the material to be processed before forming) 7 during the current heating time (the time axis of the interval D-Η) by the control by the current heating control device 27. When a current required for the temperature is supplied to the electrode 25, when the work material (work material before forming) 7 is heated to a target heating temperature, the supply current is cut off. In this way, -15-200528207 (13) can accurately and efficiently perform the electric heating program. As described above, in the present embodiment, the heating process and / or the cooling process for the work material 7 are performed in conjunction with the movement of the slider 4, and the temperature sensor 2 detects the temperature of the work material 7. The temperature information of 3, 2 4 is used to adjust the moving speed of the slider 4, whereby the material to be processed 7 is heated and cooled to a target temperature. Therefore, it is possible to compensate for a transient change in the mold temperature φ that occurs at the start of the press processing or when the press processing is temporarily interrupted, and the workpiece 7 can be reliably heated and cooled to a specific temperature. In this way, in the electric heating program, the material to be processed (before forming. The material to be processed) 7 can be surely heated to a specific temperature. Therefore, even if the material to be processed 7 is a magnesium alloy, titanium alloy, stainless steel, high-tensile steel, heat-treated steel plate, etc. • Difficult-to-machine materials can also be easily press-formed to improve the yield. On the other hand, in the cooling process, the material to be processed (processed material after molding) 7 can be reliably cooled to a specific temperature. Therefore, it is possible to stabilize the dimensional accuracy of the molded product or optimize the die hardening. φ In addition, between the points CD in FIG. 2, by applying a small current from the electrode 25 to the material 7 to be processed, it is confirmed that the electrode 25 and the material 7 are in close contact with each other 'at the point DH (H') in the same figure. At the same time, by applying a large current to the work material 7 from the electrode 25 and heating the work material 7, the effect of reliably preventing sparks caused by insufficient contact between the electrode 25 and the work material 7 can be achieved. [Brief description of the drawings] Figure I is a diagram of a press machine according to an embodiment of the present invention > 16-200528207
東 I (14) 系統構造圖。 第2圖係關於本實施形態之沖壓加工工程的滑塊移動 說明圖。 第3圖係關於本實施形態之沖壓加工工程的連續模具 的動作狀態說明圖（1 )。 第4圖係關於本實施形態之沖壓加工工程的連續模具 的動作狀態說明圖（2 )。 【主要元件符號說明】 . 1 :沖壓機械，4 ··滑塊，6 :連續模具，7 :被加工材 料，1 7 :通電加熱用模具（加熱手段），1 9 :冷卻用模具 • (冷卻手段），23、24 :溫度感測器，25 :電極East I (14) system structure diagram. Fig. 2 is a diagram for explaining the movement of the slider in the press working process of this embodiment. Fig. 3 is an explanatory diagram (1) of the operating state of the continuous die in the press working process of the present embodiment. Fig. 4 is an explanatory diagram (2) of the operating state of the continuous die in the press working process of the present embodiment. [Description of Symbols of Main Components]. 1: Stamping machine, 4 ·· Slider, 6: Continuous mold, 7: Material to be processed, 17: Mould for electric heating (heating means), 19: Mould for cooling • (Cooling Means), 23, 24: temperature sensor, 25: electrode
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