1295213 . ⑴ 九、發明說明 【發明所屬之技術領域】 本發明爲工作機械，特別當工件的切削加工後，作業 者執行從清洗槍噴出冷卻液來洗淨切削粉末或切削屑的洗 淨作業時，防止用於洗淨的冷卻液朝外側飛散的工作機械 I 【先前技術】 傳統上，能執行數値控制（所謂的N C控制）的工作 機械，在台座基體具備：.立柱、裝設於該立柱的主軸頭、 可使所載置的工件移動的工作台等。上述的工作機械，可 根據特定的加工程序，並利用裝設於主軸頭的刀具對工件 實施切削或、硏磨、鑽孔等的各種切削加工。 舉例來說，日本於2005年的特許公開第22042號公 報所記載的工作機械（立式加工中心），在基座上具備將 φ 主軸頭支承呈可上下移動的立柱、並具備可移動於X方向 或Y方向的鞍台或工作台。上述的工作機械可一邊使工作 台移動，一邊對定位載置於工作台上的工件實施各種的切 削加工。 該種類的工作機械，一般具備複數個面向工作台或工 件的洗淨噴嘴。在工件的加工中，該工作機械是藉由從上 述複數個洗淨噴嘴噴出冷卻液的方式，洗淨於切削加工時 所產生的切削粉末等的切削屑。在上述的洗淨時，爲避免 切削加工時所產生的切削屑或洗淨時的冷卻液飛散至外部 -4 - (2) 1295213 ，保護擋板（護具）是覆蓋於立柱前面側的空間。 在工件的切削加工後，由於切削加工中所產生的大量 切削屑囤積於基座的傾斜狀底部壁’作業者可執行洗淨作 業。具體地說，作業者是開啓設於保護擋板前側面的開關 門，並從具有軟管的洗淨噴嘴噴射冷卻液’使囤積於底部 壁的切削屑，通過形成於立柱左右兩側之底部壁的洗淨用 通路，沖向設於基座後側的冷卻液箱而執行洗淨。 如上所述地，當作業者開啓保護擋板前側面的開關門 執行洗淨作業時，上述的保護擋板可遮斷因上述洗淨而噴 濺的冷卻液，避免飛散至外部。此外，在立柱的前面側’ 利用保護擋板覆蓋立柱前面側的空間，可防止用於洗淨的 冷卻液朝外部飛散。 但是，保護擋板之後面壁的下端部，是以不會遮蔽洗 淨用通路的方式，位於底面壁的上側。在分別形成於基座 之左右兩側的洗淨通路中，是開放對應於立柱之側部的通 路部分的上側，並未形成任何的覆蓋。因此，當作業者從 開關門側由洗淨用噴嘴噴射強力水壓的冷卻液，來洗淨保 護擋板的後側時，噴濺的冷卻液通過保護擋板的下側，而 從立柱的側部飛散至外部。如此一來，具有地面被冷卻液 污染的問題。 【發明內容】 〔解決課題之手段〕 根據本發明之申請專利範圍第1項所記載的工作機械 -5- (3) 1295213 ，是具備台座基座體、立柱、主軸頭及保護擋板的工作機 械，其中台座基座體具備：固定立柱的安裝台座部、底壁 部、左側壁、右側壁及前側壁，並在左右側壁之上端附近 的高度位置，具備一對從台座基座體跨越至左右側壁的封 閉板構件。如此一來，當每個切削加工處理結束，作業者 從洗淨用噴嘴噴射冷卻液執行洗淨作業時，在立柱的前面 側，可藉由保護擋板確實地防止用於洗淨的冷卻液朝外部 飛散。 當作業者噴射冷卻液來洗淨保護擋板的後側時，即使 在噴濺的冷卻液通過保護擋板下側的場合中，也能利用一 對封閉板構件，確實地防止從分別形成於台座基座體左右 兩側之洗淨用通路中立柱側部朝上方飛散的冷卻液。因此 ’洗淨作業時，是以用於洗淨的冷卻液不會從工作機械的 任何部位飛散至外部的方式，使防止飛散的對策變得周全 ，可確實地防止地面的污染。 根據本發明之申請專利範圍第2項所記載的工作機械 ’其中左側的封閉板構件與安裝台座部及左側壁構成一體 ’右側的封閉板構件與安裝台座部及右側壁構成一體。如 此一來’安裝台座部與左側壁間的連結強度可顯著地提升 ’安裝台座部與右側壁間的連結強度可顯著地提升。因此 ’即使在負荷伴隨著切削加工而作用於立柱的場合中，也 能提高立柱的安定性，也就是提高切削精度。除此之外， 也能達成與申請專利範圍第1項相同的效果。 根據本發明之申請專利範圍第3項所記載的工作機械 -6- (4) 1295213 I 1 ，在較左右側壁之上端更低的高度位置，具備上述的左右 封閉板構件。據此，即使在冷卻液從保護擋板的後端漏出 ，而落下於左側封閉板構件上的場合中，上述漏出的冷卻 液，也能由左側壁、與安裝台座部及更低之左側封閉板構 件所構成的左側桶，導引至冷卻液箱。即使在漏出的冷卻 液落下於右側封閉板構件上的場合中，上述漏出的冷卻液 ，也能由右側壁、與安裝台座部及更低之右側封閉板構件 g 所構成的右側桶，導引至冷卻液箱。因此，可確實地防止 落下至上述左右封閉板構件上的冷卻液朝外部流出。除此 之外，也能達成與申請專利範圍第2項相同的效果。 根據本發明之申請專利範圍第4項所記載的工作機械 ，在安裝台座部與左側壁的上端部，可自由裝卸地具備有 左側封閉板構件。在安裝台座部與右側壁的上端部，可自 由裝卸地具備有右側封閉板構件。藉此，當作業者使用冷 卻液執行洗淨作業時，可由封閉板構件，確實地防止冷卻 φ 液從通路部分朝外部飛散，上述的通路部分是對應於分別 形成在台座基座體左右兩側的洗淨用通路中之立柱側部的 通路部分。 當作業者在清掃底部壁等，而左右兩側的封閉板構件 造成妨礙的場合中，可視需要隨時卸下封閉板構件。除此 之外，也能達成與申請專利範圍第1項相同的效果。 根據本發明之申請專利範圍第5、6項所記載的工作 機械’左右封閉板構件，分別具備方向與台座基座體之長 度方向平行的凹溝。藉此，即使在從保護擋板的後端漏出 (5) 1295213 的冷卻液’落下於左右封閉板構件上的場合中，也能由形 成於封閉板構件之凹溝所具有的導水管機能，確實地防止 冷卻液朝外部流出。除此之外，也能達成與申請專利範圍 第1〜4項相同的效果。 【實施方式】 本實施型態的工作機械，爲了安裝立柱，而在左右側 _ 壁之上端附近的高度位置，具備從設於台座基座的安裝台 座部跨越至左右側壁的一對封閉板構件。藉此，當作業者 從洗淨用噴嘴噴射冷卻液來執行洗淨作業時，封閉板構件 封閉洗淨冷卻液通路的上側，使洗淨冷卻液不會飛散至外 部。 針對爲立式加工中心的工作機械1進行說明。 如第1〜3圖所示，工作機械i，是在地面上設置俯視 角度大致呈矩形的台座基基座體2。台座基座體2的底部 鲁 壁2a’分別具有左右一對導軌台座部2e、2f，而該一對 導軌台座部2e、2f具有形成於前後方向上的導軌。在上 述的導軌上具備：可使定位載置工件的工作台3移動於Y 方向（前後方向）的Y方向驅動機構（圖示省略）、及可 使工作台3移動於X方向（左右方向）的X方向驅動機 構（圖示省略）。 台座基座體2，分別在後部具備：沿著前後方向一體 地醫》LL設置於底πβ壁2a上的左右1對安裝台座部2g、2h 。上述安裝台座部2g、2h豎立設置立柱4並形成固著。 -8 - (6) 1295213 該立柱4是將主軸頭5支承成可上下移動。 該工作機械1具備：可視需要，選擇性切換裝著於 軸頭5之複數個刀具的刀具切換裝置6。工作機械丨在 柱4的後側具備控制箱〜7，該控制箱7內藏專司工作機 1之控制的控制裝置。 如第3圖所示，台座基座體2具備：底部壁2a、前 壁2b、左側壁2c及右側壁2d。底部壁2a大致爲矩形 並遍佈於台座基座體2全體。在該底部壁2a的前側， 備一體形成於垂直方向上的前側壁2b。在底部壁2a的 側，具備一體形成於垂直方向上的左側壁2 c。在底部 2 a的右側，具備一體形成於垂直方向上的右側壁2 d。 如第5圖所示，底部壁2a具備朝後方下降的斜度。 如第1、2圖所示，台座基座體2在後側具備可貯 用於洗淨或冷卻之冷卻液的冷卻液箱1 〇。貯留於該冷卻 箱1 〇的冷卻液，是利用泵用馬達1 1驅動的循環用泵 而循環供給至洗淨噴嘴（圖示省略）。 換言之，雖然圖示省略，但該工作機械1具備：面 裝著於主軸頭5之切削刀具的噴射噴嘴、面向工作台3 噴射噴嘴等大量噴嘴。在工件的切削加工中，藉由使上 複數個噴嘴噴射冷卻液，不僅可冷卻刀具或工件’更可 切削加工中所產生的切削屑，經由後述之左右兩側的洗 冷卻液通路2 i、2 j而沖向冷卻液箱1 0。 如第1圖所示，該工作機械1，具備可覆蓋立柱4 面側之空間的大型保護擋板1 3。該保護擋板1 3 ’是下 主 械 側 具 左 壁 但 留 液 12 向 的 述 將 淨 刖 側 -9 - (7) 1295213 與上側形成開放的箱型罩體。保護擋板1 3之前側壁的下 端部，與前側壁2b的內面形成固定。保護擋板1 3之左側 壁的下端部，與左側壁2 c的內面形成固定。保護擋板1 3 之右側壁的下端部，與右側壁2d的內面形成固定。 但如第1、2圖所示，保護擋板1 3的後壁部，抵達至 立柱的前面側爲止。保護擋板1 3的下端部’是不會遮蔽 後述洗淨冷卻液通路2i、2j地，位於底部壁2a的上側。 _ 在此如第3〜5圖所示，台座基座體2 ’在豎立設置於 底部壁2a之左側導軌台座部2e及安裝台座部2g與左側 壁2c之間，具備使已洗淨之冷卻液流至冷卻液箱1 〇的左 側洗淨冷卻液通路2i。台座基座體2，在豎立設置於底部 壁2a之右側導軌台座部2f及安裝台座部2h與右側壁2d 之間，具備使已洗淨之冷卻液流至冷卻液箱1 〇的右側洗 淨冷卻液通路2j。 如第3、6圖所示，台座基座體2，在從左側之安裝台 φ 座部2g跨越至左側壁2c，且較左側壁2c之上端更低的高 度位置，具備大致呈水平姿勢的左側封閉板構件1 5。左側 封閉板構件15與安裝台座部2g及左側壁2c形成一體。 台座基座體2，在從右側之安裝台座部2h跨越至右側壁 2d ’且較右側壁2d之上端更低的高度位置，具備大致呈 水平姿勢的右側封閉板構件1 6。右側封閉板構件1 6與安 裝台座部2h及右側壁2d形成一體。 亦即如第5圖所示，右側封閉板構件1 6是位於保護 擋板1 3的後側，並配置成可覆蓋立柱4右側之底部壁2a -10- (8) 1295213 的上側，而與安裝台座部2h及右側壁2d形成一體。同樣 地，左側封閉板構件1 5也與安裝台座部2g及左側壁2c 形成一體。不僅如此，如第3〜6圖所示，從正面觀察爲三 角形的複數個補強板（肋）1 7，對水平的左側封閉板構件 1 5與左側壁2c形成補強。從正面觀察爲三角形的複數個 補強板（肋）1 8，對水平的右側封閉板構件丨6與右側壁 2d形成補強。 接著，針對工作機械1的作用及效果進行說明。 當切削加工處理結束時，作業者開啓設於保護擋板13 前側的開關門，從具有軟管的洗淨噴嘴（圖示省略）朝後 方噴射冷卻液。藉由上述的噴射，可將殘留於工作台3上 面或底部壁2a上的切削屑沖向左側洗淨冷卻液通路2i或 右側洗淨冷卻液通路2j。接著，冷卻液經由左右側的洗淨 冷卻液通路2i、2j流至冷卻液箱1 0並執行洗淨作業。 如此一來，每個連續切削加工處理結束，作業者從具 有軟管的洗淨噴嘴噴射冷卻液來執行洗淨作業。此時，由 於立柱4前面側的空間被保護擋板1 3所覆蓋，故可由保 護擋板1 3，確實地防止來自於具有軟管之洗淨噴嘴而用於 洗淨的噴濺冷卻液朝外部飛散。 台座基座體2，在左右側壁2c、2d上端附近的高度位 置，具備從該安裝台座部2g、2h跨越至左右側壁2c、2d 的一對封閉板構件1 5、1 6。藉此，當作業者噴射冷卻液來 洗淨保護擋板1 3的後側時，即使在噴濺的冷卻液通過保 護擋板13下側的場合中，在形成於台座基座體2左右兩 -11 - (9) 1295213 側的洗淨冷卻液通路2i、2j之中，也能利用封閉板構件 1 5、1 6確實地防止由立柱4之側部向上的冷卻液朝外部飛 散。 因此，在洗淨作業時，可形成「用於洗淨的冷卻液無 法從工作機械1的任何部位飛散至外部」的萬全對策，可 確實地防止地面的污染。 左側封閉板構件15與安裝台座部2g及左側壁2c構 成一體，右側封閉板構件16與安裝台座部2h及右側壁2d 構成一體。藉此，安裝台座部2 g與左側壁2 c的連結強度 可藉由左側封閉板構件1 5顯著地提升，且安裝台座部2h 與右側壁2d的連結強度可藉由右側封閉板構件1 6顯著地 提升。 以補強板1 7補強左側封閉板構件1 5與安裝台座部2 g 的連結強度，以補強板1 8補強右側封閉板構件1 6與安裝 台座部2h的連結強度。藉此，即使在伴隨著切削加工而 使負荷作用於立柱4的場合中，可提高立柱4的安定性， 也就是可提高切削精度。但亦可省略上述的補強板1 7、1 8 〇 台座基座體2，分別在較左右側壁2c、2d之上端更低 的高度位置，具備左側封閉板構件1 5與右側封閉板構件 1 6。藉此，即使在冷卻液從保護擋板i 3的後端漏出，而 落下於左側封閉板構件1 5的場合中，由左側壁2c和安裝 台座部2g及更低的左側封閉板構件1 5所形成的左側導水 管，可將該漏出的冷卻液誘導至後側的冷卻液箱1 〇。即使 •12· (10) 1295213 在漏出的冷卻液落下於右側封閉板構件1 6的場合中，由 右側壁2d和安裝台座部2h及更低的右側封閉板構件16 所形成的右側導水管，可將該漏出的冷卻液誘導至後側的 冷卻液箱1 0。因此，可確實地防止落下於上述的左右側封 閉板構件1 5、1 6上的冷卻液朝外部流出。 接著，針對上述實施型態的變更型態進行說明。 1、 上述的左側封閉板構件1 5與右側的封閉板構件1 6 ，亦可呈現略朝後方傾斜的姿勢。在該場合中，可快速地 將落下於上述左側封閉板構件1 5與右側的封閉板構件1 6 上的冷卻液排出至後方的冷卻液箱1 〇，可提高冷卻液.的排 出性。 2、 左側封閉板構件1 5 A與右側的封閉板構件1 6 A， 亦可分別獨立於台座基座體2以外，且可自由裝卸地固定 於台座基座體2。而與上述實施例相同的構件，是標示相 同的符號，並省略其說明。 亦即如第7圖所示，左側封閉板構件丨5 a，形成與左 側安裝台座部2g與左側壁2c間之間隙相同的間隙形狀， 左側封閉板構件1 5 A的左側壁2 c端部抵達左側壁2 c的上 端面。右側封閉板構件1 6 A，形成與右側安裝台座部2 h 與右側壁2d間之間隙相同的間隙形狀，右側封閉板構件 1 6 A的右側壁2 d端部抵達右側壁2 d的上端面。 左側封閉板構件1 5 A在其上面具備2個凹溝1 5 a，該 凹溝15a是形成與台座基座體2之長度方向（前後方向） 大致平行的方向。右側封閉板構件i 6 A在其上面具備2個 (11) 1295213 凹溝16a，該凹溝16a是形成與台座基座體2之長度方向 (前後方向）大致平行的方向。 因此，複數支螺栓20，是在覆蓋於左側安裝台座部 2g與左側壁2c間之間隙的狀態下，將左側封閉板構件 15A固定於左側壁2c的上端面。複數支螺栓21，是在覆 蓋於右側安裝台座部2h與右側壁2d間之間隙的狀態下， 將右側封閉板構件1 6A固定於右側壁2d的上端面。 _ 如此一來，左側封閉板構件1 5 A，從安裝台座部2g 跨越至左側壁2c的上端面，並可自由裝卸。右側封閉板 構件16A，從安裝台座部2h跨越至右側壁2cJ的上端面， 並可自由裝卸。上述的左側封閉板構件1 5 A與右側封閉板 構件1 6 A，分別具備大致平行於台座基座體2之長度方向 的凹溝1 5a、1 6a。藉此，當作業者從具有軟管的洗淨噴嘴 噴射冷卻液來執行洗淨作業時，可由上述左右側封閉板構 件15A、16A，確實地防止來自於分別形成在台座基座體 ^ 2左右兩側之洗淨冷卻液通路2 i、2 j中對應於立柱4側部 的通路部分的冷卻液朝外部飛散。 當清掃底部壁2 a等，而左側封閉板構件丨5 a與右側 封閉板構件1 6 A造成妨礙時，作業者可視需要而隨時拆下 左側封閉板構件1 5 A與右側封閉板構件丨6 a。不僅如此， 即使在從保護擋板1 3後側漏出的冷卻液，落下於左側封 閉板構件1 5 A、或右側封閉板構件丨6 a的場合中，也能由 形成於左側封閉板構件1 5 A及右側封閉板構件〗6 a之複 數個凹溝1 5 a、1 6 a所具有的導水管機能，確實地防止冷 •14- (12) 1295213 卻液朝外部流出。 【圖式簡單說明】 第1圖：爲本發明中實施例之工作機械的立體圖。 第2圖：工作機械的右側視圖。 第3圖：從台座基座體後方所見的立體圖。 第4圖：台座基座體的俯視圖。 第5圖：第4圖之E-E線的縱剖面圖。 第6圖：第2圖之F-F線的縱剖面圖。 第7圖：爲形態變更的圖，相當第3圖。 【主要元件符號說明】 1 :工作機械 2二台座基座體 4 :立柱 6 :刀具切換裝置 7 :控制箱 1 0 :冷卻液箱 1 1 :泵用馬達 1 2 :循環用泵 1 3 :保護擋板 1 6 :右側封閉板構件 18 :補強板（肋） -15-1295213 . (1) EMBODIMENT OF THE INVENTION [Technical Field of the Invention] The present invention is a working machine, in particular, after the workpiece is cut, the operator performs a cleaning operation of washing the cleaning powder from the cleaning gun to wash the cutting powder or the cutting chips. A working machine that prevents the cooling liquid used for washing from scattering to the outside. [Prior Art] Conventionally, a working machine capable of performing digital control (so-called NC control) has a column and is mounted on the base. The spindle head of the column, a table that can move the placed workpiece, and the like. In the above-mentioned working machine, various cutting operations such as cutting, honing, drilling, etc. can be performed on the workpiece by a tool mounted on the spindle head according to a specific machining program. For example, the working machine (vertical machining center) disclosed in Japanese Laid-Open Publication No. 22042, the pedestal has a column that supports the φ spindle head so as to be movable up and down, and is movable to X. A saddle or table in the direction or Y direction. The above-mentioned working machine can perform various cutting processes on the workpiece placed on the table while moving the table. This type of work machine generally has a plurality of washing nozzles facing the table or workpiece. In the machining of the workpiece, the working machine washes the cutting chips such as the cutting powder generated during the cutting process by discharging the cooling liquid from the plurality of cleaning nozzles. In the above cleaning, in order to avoid the chips generated during the cutting process or the cooling liquid during washing to scatter to the outside - 4 - (2) 1295213, the protective baffle (protector) covers the space on the front side of the column. . After the cutting of the workpiece, the operator can perform a washing operation due to the accumulation of a large amount of chips generated in the cutting process on the inclined bottom wall of the base. Specifically, the operator opens the opening and closing door provided on the front side of the protective baffle, and ejects the cooling liquid from the washing nozzle having the hose to make the chips accumulated on the bottom wall pass through the bottom portions formed on the left and right sides of the column. The wall cleaning passage is washed toward the coolant tank provided on the rear side of the base. As described above, when the operator opens the opening and closing door on the front side of the protective shutter to perform the washing operation, the above-mentioned protective shutter can block the cooling liquid sprayed by the above washing and avoid scattering to the outside. Further, the space on the front side of the column is covered by the protective baffle on the front side of the column, and the cooling liquid for washing is prevented from scattering to the outside. However, the lower end portion of the face wall behind the protective baffle is located on the upper side of the bottom wall so as not to shield the passage for washing. In the cleaning passages respectively formed on the left and right sides of the pedestal, the upper side of the passage portion corresponding to the side portion of the column is opened, and no covering is formed. Therefore, when the operator washes the rear side of the protective baffle from the cleaning door by the cooling nozzle by the cooling nozzle, the splashed coolant passes through the lower side of the protective baffle, and from the column The sides are scattered to the outside. As a result, there is a problem that the ground is contaminated by the coolant. [Means for Solving the Problem] The working machine-5-(3) 1295213 according to the first aspect of the present invention is a work including a pedestal base body, a column, a spindle head, and a protective baffle. The pedestal base body includes: a mounting base portion, a bottom wall portion, a left side wall, a right side wall, and a front side wall of the fixed column, and has a pair of pedestal body bodies spanned to a height position near the upper end of the left and right side walls Closure plate members for the left and right side walls. In this way, when the machining process is completed and the operator injects the coolant from the cleaning nozzle to perform the cleaning operation, the coolant for cleaning can be reliably prevented by the protective baffle on the front side of the column. Fly away from the outside. When the operator sprays the coolant to clean the rear side of the protective baffle, even when the splashed coolant passes through the lower side of the protective baffle, a pair of closing plate members can be used to surely prevent the formation from being separately formed. The cleaning passages on the left and right sides of the pedestal base body are scattered toward the upper side of the column. Therefore, in the case of the "cleaning operation", the cooling liquid for washing is not scattered from any part of the working machine to the outside, and the countermeasure against scattering is ensured, and the contamination of the ground can be reliably prevented. According to the working machine of the second aspect of the invention, the closing plate member on the left side is integrally formed with the mounting base portion and the left side wall, and the closing plate member on the right side is integrally formed with the mounting base portion and the right side wall. As a result, the joint strength between the mounting pedestal portion and the left side wall can be significantly improved. The joint strength between the mounting pedestal portion and the right side wall can be remarkably improved. Therefore, even when the load acts on the column with the cutting process, the stability of the column can be improved, that is, the cutting accuracy can be improved. In addition to this, the same effect as the first item of the patent application can be achieved. The machine tool -6-(4) 1295213 I 1 according to the third aspect of the invention is provided with the above-described right and left closing plate members at a lower height position than the upper ends of the left and right side walls. According to this, even in the case where the coolant leaks from the rear end of the protective baffle and falls on the left closing plate member, the leaked coolant can be closed by the left side wall, the mounting pedestal portion, and the lower left side. The left side barrel formed by the plate member is guided to the coolant tank. Even in the case where the leaked coolant falls on the right closing plate member, the leaked coolant can be guided by the right side wall, the right side wall formed by the right side wall and the lower right closing plate member g. To the coolant tank. Therefore, it is possible to surely prevent the cooling liquid dropped onto the left and right closing plate members from flowing out to the outside. In addition to this, the same effect as the second item of the patent application can be achieved. According to the machine tool of the fourth aspect of the invention, the left side closing plate member is detachably provided at the upper end portion of the mounting base portion and the left side wall. A right side closing plate member is detachably provided at an upper end portion of the mounting base portion and the right side wall. Thereby, when the operator performs the cleaning operation using the cooling liquid, the closing plate member can surely prevent the cooling φ liquid from scattering from the passage portion toward the outside, and the above-mentioned passage portions are respectively formed on the left and right sides of the pedestal base body. The passage portion of the side of the column in the cleaning passage. In the case where the operator cleans the bottom wall or the like and the closing plate members on the left and right sides are obstructed, the closing plate member can be removed at any time as needed. In addition to this, the same effect as the first item of the patent application can be achieved. The left and right closing plate members of the working machine described in the fifth and sixth aspects of the invention are each provided with a groove having a direction parallel to the longitudinal direction of the pedestal base body. Thereby, even in the case where the coolant 'b leaking from the rear end of the protective baffle (5) 1295213 falls on the left and right closing plate members, the water conduit function of the groove formed in the closing plate member can be obtained. It is sure to prevent the coolant from flowing out to the outside. In addition to this, the same effects as those of the first to fourth patent applications can be achieved. [Embodiment] The working machine according to the present embodiment has a pair of closing plate members spanning from the mounting base portion provided on the base of the base to the left and right side walls at a height position near the upper end of the left and right side walls in order to attach the column. . As a result, when the operator injects the coolant from the washing nozzle to perform the washing operation, the closing plate member closes the upper side of the washing coolant passage so that the washing coolant does not scatter to the outside. The working machine 1 for a vertical machining center will be described. As shown in Figs. 1 to 3, the work machine i is a pedestal base body 2 having a substantially rectangular shape at a plan view. The bottom wall 2a' of the pedestal base body 2 has a pair of left and right rail pedestal portions 2e, 2f, and the pair of rail pedestal portions 2e, 2f have guide rails formed in the front-rear direction. The guide rail includes a Y-direction drive mechanism (not shown) that can move the table 3 on which the workpiece is placed in the Y direction (front-rear direction), and can move the table 3 in the X direction (left-right direction). The X-direction drive mechanism (not shown). Each of the pedestal base bodies 2 is provided with a pair of left and right mounting pedestal portions 2g and 2h which are integrally provided on the bottom πβ wall 2a in the front-rear direction. The mounting base portions 2g and 2h are erected with the uprights 4 and fixed. -8 - (6) 1295213 This column 4 supports the spindle head 5 so as to be movable up and down. The work machine 1 is provided with a tool switching device 6 that selectively switches a plurality of tools attached to the spindle head 5 as needed. The working machine is provided with a control box ～7 on the rear side of the column 4, and the control box 7 houses a control device controlled by the working machine 1. As shown in Fig. 3, the pedestal base body 2 includes a bottom wall 2a, a front wall 2b, a left side wall 2c, and a right side wall 2d. The bottom wall 2a is substantially rectangular and extends over the entire base body 2 of the pedestal. On the front side of the bottom wall 2a, a front side wall 2b integrally formed in the vertical direction is prepared. On the side of the bottom wall 2a, there is provided a left side wall 2c integrally formed in the vertical direction. On the right side of the bottom portion 2a, there is provided a right side wall 2d integrally formed in the vertical direction. As shown in Fig. 5, the bottom wall 2a has a slope that descends toward the rear. As shown in Figs. 1 and 2, the pedestal base body 2 is provided with a coolant tank 1 可 on the rear side for storing the cooled or cooled coolant. The coolant stored in the cooling tank 1 is circulated and supplied to the washing nozzle (not shown) by the circulation pump driven by the pump motor 11. In other words, although the illustration is omitted, the machine tool 1 includes a plurality of nozzles such as an injection nozzle that covers the cutting tool of the spindle head 5 and a nozzle that faces the table 3. In the cutting process of the workpiece, by spraying the coolant on the upper plurality of nozzles, it is possible to cool not only the cuttings generated in the tool or the workpiece, but also the washing coolant passages 2 i on the left and right sides, which will be described later. 2 j and rushed to the coolant tank 10 . As shown in Fig. 1, the work machine 1 is provided with a large protective baffle 13 that can cover a space on the side of the column 4 side. The protective baffle 1 3 ' is a box-shaped cover that is open to the left side of the lower main mechanical side but has a left liquid 12 direction, and the net side -9 - (7) 1295213 is opened to the upper side. The lower end portion of the front side wall of the protective shutter 13 is fixed to the inner surface of the front side wall 2b. The lower end portion of the left side wall of the protective shutter 13 is fixed to the inner surface of the left side wall 2c. The lower end portion of the right side wall of the protective baffle 13 is fixed to the inner surface of the right side wall 2d. However, as shown in Figs. 1 and 2, the rear wall portion of the protective shutter 13 reaches the front side of the column. The lower end portion ' of the protective baffle 13 is located on the upper side of the bottom wall 2a so as not to shield the cleaning coolant passages 2i and 2j, which will be described later. _ As shown in Figs. 3 to 5, the pedestal base body 2' is provided between the left rail pedestal portion 2e and the mounting pedestal portion 2g and the left side wall 2c which are erected on the bottom wall 2a, and has been cooled. The liquid flows to the left side of the coolant tank 1 to wash the coolant passage 2i. The pedestal base body 2 is provided between the right rail pedestal portion 2f erected on the bottom wall 2a and the mounting pedestal portion 2h and the right side wall 2d, and is provided with a right side for cleaning the cleaned coolant to the coolant tank 1 〇 Coolant passage 2j. As shown in FIGS. 3 and 6, the pedestal base body 2 has a substantially horizontal position at a height position lower than the upper end of the left side wall 2c from the mounting seat φ seat portion 2g on the left side to the left side wall 2c. The left side panel member 15 is closed. The left closing plate member 15 is formed integrally with the mounting base portion 2g and the left side wall 2c. The pedestal base body 2 has a right side closing plate member 16 having a substantially horizontal posture at a height position that is lower from the mounting pedestal portion 2h on the right side to the right side wall 2d' and lower than the upper end of the right side wall 2d. The right closing plate member 16 is integrally formed with the mounting base portion 2h and the right side wall 2d. That is, as shown in Fig. 5, the right side closing plate member 16 is located on the rear side of the protective baffle 13 and is disposed so as to cover the upper side of the bottom wall 2a -10- (8) 1295213 on the right side of the column 4, and The mounting base portion 2h and the right side wall 2d are integrally formed. Similarly, the left side closing plate member 15 is also integrally formed with the mounting base portion 2g and the left side wall 2c. Further, as shown in Figs. 3 to 6, a plurality of reinforcing plates (ribs) 17 having a triangular shape as viewed from the front side form a reinforcing force to the horizontal left closing plate member 15 and the left side wall 2c. A plurality of reinforcing plates (ribs) 18 which are triangular in shape viewed from the front form a reinforcing force to the horizontal right closing plate member 丨6 and the right side wall 2d. Next, the action and effect of the work machine 1 will be described. When the cutting process is completed, the operator opens the switch door provided on the front side of the protective shutter 13, and ejects the coolant from the washing nozzle (not shown) having the hose toward the rear. By the above-described spraying, the chips remaining on the upper surface or the bottom wall 2a of the table 3 can be flushed to the left side cleaning coolant passage 2i or the right side cleaning coolant passage 2j. Then, the coolant flows to the coolant tank 10 via the left and right cleaning coolant passages 2i and 2j to perform a washing operation. As a result, each continuous cutting process is completed, and the operator injects the coolant from the washing nozzle having the hose to perform the washing operation. At this time, since the space on the front side of the column 4 is covered by the protective baffle 13, the protective baffle 13 can be used to surely prevent the splashing coolant from being washed by the washing nozzle having the hose toward The outside is scattered. The pedestal base body 2 has a pair of closing plate members 15 and 16 spanning from the mounting pedestal portions 2g and 2h to the left and right side walls 2c and 2d at a height position near the upper ends of the left and right side walls 2c and 2d. Thereby, when the operator sprays the coolant to clean the rear side of the protective shutter 13, even when the splashed coolant passes through the lower side of the protective shutter 13, the left and right sides of the base body 2 are formed. -11 - (9) Among the cleaning coolant passages 2i and 2j on the side of the 1295213, the closing plate members 15 and 16 can surely prevent the coolant flowing upward from the side portion of the column 4 from scattering to the outside. Therefore, in the cleaning operation, it is possible to form a countermeasure against "the cooling liquid used for washing cannot be scattered from any part of the working machine 1 to the outside", and it is possible to reliably prevent contamination of the ground. The left closing plate member 15 is integrally formed with the mounting base portion 2g and the left side wall 2c, and the right closing plate member 16 is integrally formed with the mounting base portion 2h and the right side wall 2d. Thereby, the connection strength between the mounting pedestal portion 2g and the left side wall 2c can be significantly increased by the left side closing plate member 15, and the joint strength between the mounting pedestal portion 2h and the right side wall 2d can be made by the right side closing plate member 16 Significantly improved. The reinforcing plate 17 is used to reinforce the joint strength between the left closing plate member 15 and the mounting base portion 2g, and the reinforcing plate 18 reinforces the joint strength between the right closing plate member 16 and the mounting base portion 2h. Thereby, even when a load acts on the column 4 with the cutting process, the stability of the column 4 can be improved, that is, the cutting accuracy can be improved. However, the above-mentioned reinforcing plate 17 and 18 base base body 2 may be omitted, and the left side closing plate member 15 and the right side closing plate member 16 may be provided at a lower height position than the upper ends of the left and right side walls 2c, 2d, respectively. . Thereby, even in the case where the coolant leaks from the rear end of the protective shutter i3 and falls on the left closing plate member 15, the left side wall 2c and the mounting pedestal portion 2g and the lower left closing plate member 15 The formed left aqueduct can induce the leaked coolant to the coolant tank 1 后 on the rear side. Even if 1212 (10) 1295213, in the case where the leaked coolant falls on the right side closing plate member 16, the right side water conduit formed by the right side wall 2d and the mounting pedestal portion 2h and the lower right closing plate member 16 is The leaked coolant can be induced to the coolant tank 10 on the rear side. Therefore, it is possible to surely prevent the coolant falling on the left and right side closure plate members 15 and 16 described above from flowing out to the outside. Next, a modification of the above embodiment will be described. 1. The left side closing plate member 15 and the right closing plate member 16 may also be slightly tilted rearward. In this case, the cooling liquid dropped on the left closing plate member 15 and the closing plate member 16 on the right side can be quickly discharged to the rear coolant tank 1 〇, and the discharge property of the cooling liquid can be improved. 2. The left closing plate member 1 5 A and the right closing plate member 16 A may be independently fixed to the pedestal base body 2 independently of the pedestal base body 2 and detachably. The same members as those of the above-described embodiment are denoted by the same reference numerals, and the description thereof will be omitted. That is, as shown in Fig. 7, the left side closing plate member 丨5 a forms the same gap shape as the gap between the left side mounting pedestal portion 2g and the left side wall 2c, and the left side wall 2 c end portion of the left side closing plate member 15 A Arrive at the upper end of the left side wall 2 c. The right side closing plate member 16A forms a gap shape identical to the gap between the right side mounting base portion 2h and the right side wall 2d, and the right side wall 2d end of the right side closing plate member 16A reaches the upper end surface of the right side wall 2d. . The left closing plate member 15A has two grooves 15a formed thereon, and the groove 15a is formed in a direction substantially parallel to the longitudinal direction (front-rear direction) of the pedestal base body 2. The right closing plate member i 6 A has two (11) 1295213 recessed grooves 16a formed thereon, and the recessed grooves 16a are formed in a direction substantially parallel to the longitudinal direction (front-rear direction) of the pedestal base body 2. Therefore, the plurality of bolts 20 are fixed to the upper end surface of the left side wall 2c in a state of covering the gap between the left side mounting base portion 2g and the left side wall 2c. The plurality of bolts 21 are fixed to the upper end surface of the right side wall 2d in a state of covering the gap between the right side mounting base portion 2h and the right side wall 2d. In this way, the left side closing plate member 15 A is spanned from the mounting base portion 2g to the upper end surface of the left side wall 2c, and is detachably attachable. The right closing plate member 16A is spanned from the mounting base portion 2h to the upper end surface of the right side wall 2cJ, and is detachably attachable. The left closing plate member 15A and the right closing plate member 16A have the grooves 15a and 16a substantially parallel to the longitudinal direction of the base body 2, respectively. In this way, when the operator injects the coolant from the washing nozzle having the hose to perform the washing operation, the left and right closing plate members 15A and 16A can be reliably prevented from being formed on the base of the base. The coolant corresponding to the passage portion of the side portion of the column 4 in the washing coolant passages 2 i, 2 j on both sides is scattered toward the outside. When the bottom wall 2a or the like is cleaned, and the left closing plate member 丨5a and the right closing plate member 166 are obstructed, the operator can remove the left closing plate member 15A and the right closing plate member 随时6 as needed. a. Further, even in the case where the coolant leaking from the rear side of the protective baffle 13 falls down to the left closing plate member 15A or the right closing plate member 丨6a, it can be formed by the left closing plate member 1 5 A and the right side of the closing plate member〗 6 a of the plurality of grooves 1 5 a, 1 6 a has a water conduit function, to prevent cold • 14- (12) 1295213 but the liquid flows out to the outside. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a perspective view of a working machine according to an embodiment of the present invention. Figure 2: Right side view of the work machine. Figure 3: A perspective view seen from behind the base of the pedestal. Figure 4: Top view of the base of the pedestal. Fig. 5 is a longitudinal sectional view taken along line E-E of Fig. 4. Fig. 6 is a longitudinal sectional view taken along line F-F of Fig. 2. Figure 7: A diagram showing the change of form, which is equivalent to Figure 3. [Main component symbol description] 1 : Working machine 2 2 pedestal base body 4 : Column 6 : Tool switching device 7 : Control box 1 0 : Coolant tank 1 1 : Pump motor 1 2 : Recirculation pump 1 3 : Protection Baffle 16: right side closing plate member 18: reinforcing plate (rib) -15-