201201930 六、發明說明 【發明所屬之技術領域】 本發明係關於把持於主軸之棒材的振動停止裝置。 【先前技術】 以往，具備以預先決定的加工旋轉數來檢測把持於旋 轉的主軸之棒材的振動的振動檢測手段、抑制棒材的振動 之振動抑制手段、及控制振動抑制手段的作動之作動控制 手段，作動控制手段構成爲依據利用振動檢測手段所進行 的棒材的振動的檢測來使振動抑制手段作動之棒材的振動 停止裝置爲眾所皆知（例如，專利文獻1 )。 專利文獻1 :日本專利第33 57279號公報（第3-5 頁、圖 1、3-6 ) 【發明內容】 [發明所欲解決之課題] 此棒材的振動停止裝置構成爲振動抑制手段由保持棒 材的周面之棒材保持手段所構成，作動控制手段依據棒材 的振動等級，使棒材保持手段對棒材的周面朝橫方向接近 或遠離。 因此，會有當利用振動抑制手段（棒材保持手段）抑 制棒材的振動時，棒材保持手段與棒材相抵接，因棒材的 振動的抑制造成棒材的周面因棒材保持手段引起傷痕、彎 曲等之情況產生的缺點。 -5- 201201930 [用以解決課題之手段] 爲了前述課題，本發明之棒材的振動停止裝置係具備 有：用來檢測把持於以預先決定的加工旋轉數旋轉的主軸 之棒材的振動的振動檢測手段；用來抑制棒材的振動之振 動抑制手段；及依據利用振動檢測手段所進行之前述棒材 的振動的檢測，來控制振動抑制手段的作動之作動控制手 段， 振動抑制手段由控制主軸的旋轉數之旋轉數控制手段 所構成，作動控制手段以依據利用振動檢測手段所進行之 棒材的振動的檢測使主軸的旋轉數改變的方式，控制旋轉 數控制手段的作動，並且以利用主軸的旋轉數的改變所產 生之棒材的振動的收斂，使主軸的旋轉數回復到加工旋轉 數的方式，控制旋轉數控制手段的作動。 在此，作動控制手段，亦可爲依據利用振動檢測手段 所進行之棒材的振動的檢測，來控制旋轉數控制手段的作 動，使主軸的旋轉數降低，又，亦可控制旋轉數控制手段 的作動，使旋轉數上升。 又，在控制旋轉數控制手段的作動，使主軸的旋轉數 降低者之情況，作動控制手段控制旋轉數控制手段的作 動，使得利用主軸的旋轉數的改變所產生之棒材的振動的 收斂，讓主軸的旋轉數上升至原來的加工旋轉數即可。 另外，在控制旋轉數控制手段的作動，使主軸的旋轉 數上升者之情況，作動控制手段控制旋轉數控制手段的作 -6- 201201930 動，使得利用主軸的旋轉數的改變所產生之棒材的振動的 收斂，讓主軸的旋轉數下降至原來的加工旋轉數即可。 在本發明之棒材的振動停止裝置’振動檢測手段係配 置成：在對主軸供給棒材之供材機與支承主軸的主軸台之 間的位置，檢測棒材的振動爲佳。 在本發明之棒材的振動停止裝置，振動檢測手段係配 置成：在支承主軸之主軸台側，檢測棒材的振動爲佳。 在本發明之棒材的振動停止裝置，振動檢測手段係由 檢測供棒材通過之筒體的振動之振動感應器所構成爲佳。 在本發明之棒材的振動停止裝置，將振動檢測手段之 結構作成爲由檢測對棒材的位置之位移感應器所形成，藉 由棒材與位移感應器較預先決定的距離更接近，來檢測棒 材的振動爲佳。 在本發明之棒材的振動停止裝置，振動檢測手段係爲 用來檢測對主軸供給棒材之供材機的振動之振動感應器爲 佳。 在本發明之棒材的振動停止裝置，具備有位置檢測手 段，其爲按壓棒材的後端部，使棒材朝主軸的軸線方向移 動’檢測對主軸所供給的棒材供給手段的位置之位置檢測 手段，又，將作動控制手段之結構作成爲：控制旋轉數控 制手段的作動，使得當被位置檢測手段所檢測到的棒材供 給手段的位置被判定爲預測棒材的振動產生之特定的範圍 內時，使主軸的旋轉數改變爲佳。 在本發明之棒材的振動停止裝置，具備有輸送量變更 201201930 手段，其爲因應主軸的旋轉數’變更用來加工棒材之加工 工具與棒材中之至少其中一方的輸送量者爲佳。 [發明效果] 本發明之棒材的振動停止裝置係爲藉由振動抑制手段 改變主軸的旋轉數，讓棒材的振動收斂者，而非使棒材保 持手段等與振動之棒材接觸的結構，故，具有下述效果’ 即，能夠防止因與該棒材保持手段等之接觸造成在棒材的 周面產生傷痕或產生棒材的彎曲等之問題的效果。 又，當藉由改變主軸的旋轉數，使棒材的振動收斂 時，由於讓主軸的旋轉數回復至原來的加工旋轉數’故’ 能夠以振動發生前之預先決定的適當的加工條件之加工旋 轉數，持續進行加工。 在本發明，具有下述優點，即，若依據作動控制手 段，係爲依據利用振動檢測手段所進行之棒材的振動的檢 測，使主軸的旋轉數降低，藉由棒材的振動的收斂使主軸 的旋轉數上升至原來的加工旋轉數的方式，控制旋轉數控 制手段的作動，則，由於藉由棒材的振動的收斂，使得主 軸的旋轉數上升至預先決定的加工旋轉數，故，能夠防止 主軸以低旋轉數進行旋轉的時間時較所需之時間以上更 長，可抑制加工時間變長，能夠防止加工效率降低等之優 點。 在本發明，若依據作動控制手段爲依據利用振動檢測 手段所進行之棒材的振動的檢測，使主軸的旋轉數上升， -8 - 201201930 藉由棒材的振動的收斂使主軸的旋轉數降低至原來的加工 旋轉數的方式，控制旋轉數控制手段的作動，則由於藉由 主軸的旋轉數之上升，使棒材的振動收斂，比起藉由主軸 的旋轉數的降低使棒材的振動收斂者，能夠抑制加工時問 變長之程度。 又，藉由在棒材的振動收斂後，返回至預先決定的原 來的加工旋轉數，能夠確保在預先設定的加工旋轉數之加 工品質。 在本發明，若依據將振動檢測手段配置成在對主軸供 給棒材之供材機與支承主軸的主軸台之間的位置檢測棒材 的振動者，則，能夠在棒材振動時之振幅變得較大的位置 檢測振動，可提升棒材的振動的檢測精度。 在本發明，藉由將振動檢測手段配置成在支承主軸之 主軸台側檢測棒材的振動，亦可在主軸側，比較容易檢測 棒材的振動。 再者，在本發明，作爲振動檢測手段，適用用來檢測 供棒材通過的筒體之振動的振動感應器、檢測相對棒材之 位置的位移感應器等者，容易被構成。 又，會有下述情況，即，直徑較細（例如直徑1〔 mm〕左右）之棒材’兩端如成爲節之跳繩時之繩的動作 般容易振動，相對於此，直徑較粗（例如直徑1 0〔 mm〕 以上）之棒材、長度較短的棒材，不會產生如前述上述跳 繩時之繩的動作，而會形成與已被固定之主軸側的端部相 反側的端部大幅振動的形態之情況。 ~ 9 - 201201930 又，由於該與主軸側的端部相反側的端部位於供材機 側，故，在本發明，藉由將振動檢測手段作爲用來檢測供 材機的振動之振動感應器，能夠以檢測供材機的振動，來 適當地檢測直徑較粗的棒材、長度較短的棒材的振動。 又，在本發明，若爲當藉由位置檢測手段所檢測到的 棒材供給手段的位置係處於預測爲棒材的振動會產生之特 定的範圍（亦可爲特定的位置）時，作動控制手段改變主 軸的旋轉數的方式，控制振動抑制手段（旋轉數控制手 段）的作動者，則，在棒材的振動產生的機率高之狀態 下，可未然地防止棒材的實際振動的產生。 又，在本發明，若爲設有因應主軸的旋轉數，改變用 來加工棒材之加工工具與棒材中之至少其中一方的輸送量 的輸送量變更手段者，則可防止加工精度降低。 【實施方式】 如圖1所示，搭載有本發明之振動停止裝置的一實施 形態之工作機械的主軸1呈中空的筒狀。在主軸1的前端 裝設有夾持裝置2。主軸1係藉由機內電動機3可自由旋 轉驅動地支承於主軸台4。主軸台4係可朝主軸1的軸線 方向（Z軸方向）自由滑動地支承於導軌5，該導軌係被 搭載於工作機械的機座6上。 在機座6，自主軸1的後端側插入至主軸1內之中空 的內插管7(筒體）經由支承體8被固定著。內插管7在 主軸1的後方位置被支承著。支承體8配置於主軸台4的 -10- 201201930 後端與配置在工作機械的後方的供材機9的導件9a的端 部之略中間位置。 在內插管7內，自供材機9插入棒狀的材料（棒材） 11。棒材U通過內插管7’從主軸1的前端突出。棒材 11藉由夾持裝置2把持於主軸1。 工作機械係與以往同樣地，利用以依據Nc程序之 NC裝置的控制’將棒材1 1予以把持的狀態之主軸I的旋 轉、和主軸台4的Z軸方向之移動，將棒材11的自主軸 1突出的突出部分作爲以未圖示的加工工具進行加工之 NC旋盤來構成。 本實施形態的工作機械係如前述，藉由主軸台4的移 動，使得主軸1朝Z軸方向移動，故，棒材η的輸送量 依據主軸台4的Z軸方向之輸送量（主軸每i旋轉之移動 量）來決定。 另外’在內插管7 ’設有用來檢測內插管7的振動之 振動感應器12(振動檢測手段）。振動感應器12具備保 持體14，該保持體形成有細縫13。振動感應器12係藉由 將內插管7插入於細縫13並以保持體14夾持內插管7, 來安裝於內插管7。 當因主軸1的旋轉，造成在棒材11產生振動時，因 棒材11的振動，使得在內插管7會產生振動。振動感應 器1 2設定成檢測依據棒材1 1的振動之內插管7的振動。 即，振動感應器12構成爲藉由檢測內插管7的振動來檢 測棒材11的振動之振動檢測手段。 -11 - 201201930 振動感應器12配置於主軸台4的後端與供材機9的 導件9a的端部之略中間的支承體8的附近位置，在棒材 1 1振動時之振幅變得較大的位置檢測振動，因此，能夠 高精度地檢測棒材1 1的振動。 特別是直徑細（例如直徑1〔 mm〕等的）棒材1 1產 生振動時，在主軸台4的後端與導件9a的端部之間，如 跳繩用繩般振動，故，在主軸台4的後端與導件9a的端 部之略中間的位置，該振動的量會變得最大，因此，在該 位置所進行之振動的檢測會成爲精度高者。 如圖2所示，在NC裝置16，設有用來控制主軸1的 旋轉數與主軸台4的輸送量之主軸控制手段17(包含旋 轉數控制手段（振動抑制手段）的結構）。又，在NC裝 置16，具備有依據振動感應器12的輸出來控制主軸控制 手段1 7的作動之作動控制手段I 8。 來自於振動感應器12之輸出被輸入至作動控制手段 1 8側。在本實施形態，主軸控制手段1 7與作動控制手段 1 8係藉由NC裝置16依據被記億於NC裝置16側之NC 程式進行作動來實現的。 作動控制手段1 8係如圖3的流程所示，當進行棒材 11的加工時，首先，在步驟S1，將主軸1的旋轉數與主 軸台4的輸送量分別設定成以NC程式預先指定（設定） 之預定的加工旋轉數N與輸送量F。 然後，作動控制手段1 8控制主軸控制手段1 7的作 動，使得工作機械利用主軸控制手段1 7，讓該主軸1以 -12- 201201930 加工旋轉數N被旋轉驅動，主軸台4以輸送量F移動， 開始進行加工。 接著，在步驟S2，比較加工旋轉數N與預先決定的 最低旋轉數Nrniri。當加工旋轉數N較最低旋轉數Nmin 大（Nmin S N )的情況時，前進至步驟S3，核對來自於 振動感應器12之輸出。 另外，在加工旋轉數N未滿最低旋轉數Nmin ( N< Nmin )的情況時，由於在工作機械未符合預先決定的最 低旋轉數的條件（適當的加工條件），故，前進至步驟 S4，作動控制手段1 8控制主軸控制手段1 7的作動，使警 報產生而停止加工。 在處理前進到步驟S3，當振動感應器1 2檢測到因棒 材11產生超過預先決定的振動（容許振動）之大振動而 造成內插管7大幅振動之情況時，前進至步驟S 5，控制 主軸控制手段1 7的作動，使得作動控制手段1 8以預定的 比例使主軸1的加工旋轉數N降低後再設定，然後前進 至步驟S6。藉此，主軸1以藉由主軸控制手段17進行了 再設定之加工旋轉數N旋轉驅動。 再者，在步驟S 3，當振動感應器1 2未檢測到內插管 7的振動時（即未檢測到棒材1 1的亂動（振動））時， 返回至步驟S1，藉由預先以NC程式所指定的預定的加工 旋轉數N與輸送量F持續進行加工。藉此，在從加工開 始，前述棒材1 1的亂動未產生之情況，以N C程式預先 指定之預定的加工旋轉數N與輸送量F的加工持續進 -13- 201201930 行，之後，反復進行步驟S1〜步驟S3的處理。 在步驟S6，判斷對已進行再設定的加工旋轉數N之 輸送量F (以NC程式預先所設定之輸送量F)是否合 適。當判斷爲對進行了再設定之加工旋轉數N，需要降低 輸送量F時，前進至步驟S7，藉由以作動控制手段18對 主軸控制手段1 7所進行之控制，來以預定的比例降低輸 送量F而進行再設定，然後返回至步驟S2。 藉此，主軸台4藉由以主軸控制手段17進行了再設 定之輸送量F進行移動，使得棒材U的輸送量F被變 更。 再者，當判斷爲對進行了再設定之加工旋轉數N不 需要降低輸送量F時，不進行輸送量F之再設定，就返回 至步驟S 2。 對進行了再設定之加工旋轉數N之輸送量F的變更 與否，能夠依據割口等將對預定的加工旋轉數N之輸送 量F預先設定於NC裝置1 6側等來加以判斷。 當自步驟S6或步驟S7返回到步驟S2時’在步驟 S2，針對進行了再設定之加工旋轉數N與最低旋轉數 Nmin之大小進行比較，在進行了再設定之加工旋轉數N 較最低旋轉數Nmi η大之情況時’前進至步驟S3’而當進 行了再設定之加工旋轉數Ν未滿最低旋轉數Nmin之情況 時，前進至步驟S4。 工作機械當藉由作動控制手段1 8 ’在以N c程式所指 定之預先決定的加工旋轉數N與輸送量F之加工中’產 -14- 201201930 生棒材1 1的振動而被檢測到內插管7的振動時，棒材1 1 的振動收斂而內插管7的振動收斂地，藉由作動控制手段 18的步驟S2、S3、S5，在最低旋轉數Nmin以上的範圍 使主軸1的加工旋轉數N降低後進行加工，當棒材11的 振動收斂而內插管7的振動收斂時，自作動控制手段1 8 的步驟S3返回到步驟S1，使得加工旋轉數上升至以NC 程式所預先指定之預定的加工旋轉數N，返回到以此加工 旋轉數N所進行之加工。 作動控制手段1 8係如圖3的流程所示，作爲依據利 用振動感應器12所進行之內插管7的振動（棒材11的振 動）的檢測，使主軸控制手段1 7作動之作動控制手段來 發揮功能。 再者，一般在NC程式，通常係指定在不會產生棒材 11的亂動的範圍之加工旋轉數中的盡可能高之旋轉數作 爲加工旋轉數N。但，棒材11會有因稍許彎曲等的原因 造成在以NC程式所預先指定之預定的加工旋轉數N下進 行加工途中產生亂動之情況。 但，當該亂動爲因外部亂動等所引起的暫時因素時， 則可藉由暫時讓主軸1 (棒材11)的旋轉數降低，來使棒 材1 1的亂動收斂。 又，由於爲因暫時的因素所引起之亂動，故，當棒材 11的亂動收斂後，再次將主軸1的旋轉數上升至以NC程 式所預先指定之預定的加工旋轉數N，也不會有因該旋轉 數的上生造成再次產生亂動之情況，因此，能夠適當地上 -15- 201201930 升至該所預先指定之加工旋轉數N。 因此，藉由本實施形態的振動停止裝置’能可防止在 棒材1 1亂動的狀態進行加工，可避免加工精度降低。特 別是與以往將棒材1 1抵接於棒材保持手段等來讓振動收 斂之結構不同，由於利用降低主軸1 (棒材11 )的旋轉數 來使棒材11的亂動收斂，故，能夠防止因棒材11與棒材 保持手段等之抵接所引起的棒材11的周面之傷痕等產 生，能夠圓滑地進行不會有精度降低、傷痕產生等之製品 加工。 又，藉由預先以NC程式所指定的預定的加工旋轉數 N，來訂定每單位時間之製品加工數等的加工效率。本實 施形態的振動停止裝置，雖在加工旋轉數N之降低狀態 時加工效率會降低，但，加工旋轉數N之降低爲暫時 性，當棒材11的亂動收斂時，則加工旋轉數N會上升至 以NC程式所預先指定之預定的加工旋轉數N，因此，加 工效率不會極端地降低，能夠防止加工效率極端降低之情 況產生。 再者，在本實施形態，構成爲藉由步驟S6、S7之作 動控制手段18的處理，可因應加工旋轉數N之再設定， 將輸送量F亦進行再設定（具體而言，對應加工旋轉數N 之降低，輸送量F也降低）。即，作動控制手段1 8係兼 做爲藉由流程之步驟S6、S7，因應主軸1的旋轉數，來 將棒材11的輸送量F予以設定變更之輸送量變更手段。 藉此，能夠防止因加工旋轉數的降低所引起割口異常 -16- 201201930 等，能夠防止加工精度降低。但，若無割口異常等之缺點 產生時，並不一定需要因應加工旋轉數N之再設定來將 棒材11的輸送量F進行再設定。 又，在主軸固定型的自動旋盤’或主軸（主軸台）與 加工工具（刀具台）的雙方朝Z軸方向移動之自動車床的 情況，亦可作成爲下述結構，即，變更加工工具的Z軸方 向之輸送量、加工工具與主軸雙方之Z軸方向之輸送量， 以變更改變棒材1 1的輸送量F。 再者，亦可將加工工具朝棒材11之切入方向的移動 速度（主軸之每1旋轉之移動量）作爲加工工具的輸送 量，將作業控制手段1 8構成爲，僅將棒材1 1的輸送量F 與加工工具的輸送量雙方或僅加工工具之輸送量，因應主 軸1的旋轉數進行設定變更。在此情況，亦可防止因加工 旋轉數的降低所引起之割口異常等產生，能夠防止加工精 度降低》 如圖4(A)所示’在將內插管7固定設置於主軸台 4側之情況’亦可經由托架2 1將振動感應器1 2安裝於支 承體8。在此情況’藉由棒材π通過托架21內而被供給 至主軸1，以檢測因棒材1 1的振動（亂動）所引起之托 架21的振動’來檢測到棒材1 1的振動（亂動）^ 再者’振動感應器12，亦可如圖4(B)所示，安裝 於爲了保持內插管7而安裝在主軸台4的內插管保持體 22(支承體側）。在此情況’藉由棒材11通過內插管保 持體22內而被供給至主軸1，以檢測因棒材u的振動 •17- 201201930 (亂動）所引起之內插管保持體22的振動，來檢測到棒 材1 1的振動（亂動）。可將振動感應器1 2如前述般簡單 地安裝於主軸台4側，能夠較容易地檢測棒材1 1的振動 (亂動）。 另外，如圖4(C)所示，亦可在托架21裝設位移感 應器23，將其作爲用來檢測棒材1 1的振動之振動檢測手 段。在此情況，可作成爲下述結構，即，藉由位移感應器 23，檢測自位移感應器23到托架21內的棒材11爲止之 距離（沿著棒材11的半徑方向之距離），檢測棒材11較 預先決定的距離更接近位移感應器23，來檢測棒材11的 振動（亂動）。 又，亦可作成爲下述結構，即，利用以麥克風等檢測 當棒材1 1的振動產生之情況時的聲音，來檢測棒材1 1的 振動（亂動）。 再者，亦可當振動感應器12、位移感應器23等的振 動檢測手段檢測到棒材1 1的振動時，作動控制手段1 8控 制主軸控制手段1 7的作動，來將主軸1的加工旋轉數N 以預定的比例上升而進行再設定，當棒材11的振動收斂 後，作動控制手段1 8控制主軸控制手段1 7的作動，使主 軸1的加工旋轉數N降低至原來的加工旋轉數N (以NC 程式所預先指定之加工旋轉數）後進行再設定。 如此，棒材11的振動，不僅以使主軸1的旋轉數降 低，亦能以使該旋轉數上昇，藉由改變旋轉數來讓其收 斂，當棒材11的振動收斂時，使主軸1的旋轉數回復到 -18- 201201930 原來的加工旋轉數，故，能夠以振動產生前之作爲預先決 定的適當的加工條件的加工旋轉數來持續進行加工。 又，亦可如圖5所示，將振動檢測手段作爲檢測供材 機9的振動之振動感應器12來設置於該供材機9者。 直徑較細的（例如直徑1〔 mm〕程度）棒材1 1，兩 端（一方之端部爲被設置於主軸1的前端之夾持裝置2所 固定的部分、另一方之端部爲被供材機9的導件9a的前 端所導引的部分）如成爲節之跳繩用繩的動作容易振動， 相對於此，直徑較粗的（例如直徑1 〇〔 mm〕以上）棒材 11爲非如上述跳繩用繩這樣的動作，而是與被固定之主 軸1側的端部（前述一方之端部）相反側的端部（前述另 一方之端部）大幅振動的形態之情況》 在此情況，前述另一方之端部的供材機9被傳達該棒 材1 1的振動而振動。 因此，能夠採用下述結構，即，在供材機9的本體 (外裝盒等）安裝例如托架21，在此托架21設置作爲振 動檢測手段之振動感應器1 2，能夠檢測供材機9的振動 來適當地檢測直徑較粗的棒材1 1的振動。 再者，棒材11的長度爲較短的情況也與直徑較粗的 前述棒材11同樣地，會有與被固定之主軸1側的前述一 方之端部相反側的前述另一方之端部大幅振動之形態的情 況，因此，對用來加工長度較短的棒材11之裝置，採用 在供材機9設置振動感應器12之結構，能夠適當地檢測 長度較短的棒材11的振動。 -19- 201201930 如圖6所示，在藉由供材機9將棒材11朝主軸1進 行供給之情況，供材機9藉由設置於推桿9c (與後述的 指部9b—同構成棒材供給手段）的前端之指部9b來把持 棒材11的後端部lib，讓推桿9c朝Z軸方向移動，藉 此，指部9b朝主軸1的軸線方向按壓棒材1 1的後端部， 使棒材11移動而供給至主軸1。 在主軸1與供材機9之間，會有設置振動停止滾子 30之情況，該滾子將通過該等之間的棒材11予以夾持並 導引，抑制棒材1 1的振動。 當被供給至主軸1之棒材11的長度較短的圖6(A) 的狀態時，棒材11藉由與振動停止滾子30接觸，其振動 被抑制，但，如圖6 ( B )的狀態時，棒材1 1變得較短， 而指部9b通過振動停止滾子30時，以容許指部9b的通 過的方式，振動停止滾子30朝K方向移動，自推桿9c (指部9b )分離，在推桿9c的位置Z1，因振動停止滾子 30所進行之棒材11的導引動作被解除，造成棒材11變 得容易振動。 在此情況也同樣地，當在棒材1 1產生振動時，棒材 11的振動會透過指部9b及推桿9c作爲振動傳達至供材 機9的本體，因此，藉由在供材機9安裝振動感應器 1 2，能夠適當地檢測棒材1 1的振動。 再者，爲了使指部9b通過而朝K方向移動之振動停 止滾子30，即使在指部9b通過後，也同樣地夾持推桿9c 而不會朝與K方向相反之相反方向位移，但，伴隨棒材 -20- 201201930 11對主軸1之供給，自主軸1的後端突出之棒材11的長 度變短，而當推桿9c之位置到達預定的位置Z2時，棒材 11的容易振動的狀態會收斂。 因此，在指部9b要通過振動停止滾子30之位置附 近，可預先設定棒材11容易產生振動之推桿9c的位置範 圍，即，預測到會產生棒材1 1的振動之特定的範圍Μ (作爲推桿9c之位置Ζ的位置Ζ1〜位置Ζ2的範圍）。 又，亦可爲如圖7、8所示，設置用來檢測推桿9c的 Z軸方向之位置的位置感應器31作爲位置檢測手段，將 作動控制手段1 8作成爲控制主軸控制手段1 7的作動，使 藉由位置感應器3 1所檢測到的推桿9c的位置處於預測到 棒材11的振動會產生之Z軸方向之特定的範圍Μ內時， 使主軸1的加工旋轉數改變，而當該指部9b的位置處於 前述範圍Μ外（從特定的範圍Μ脫離之範圍）時，使主 軸1的加工旋轉數Ν回復到原來的加工旋轉數Ν。 再者，範圍Μ，亦可不是具有寬度之範圍（位置Ζ1 〜位置Ζ2)，而是精確標點之位置。又，位置感應器31 亦可作成爲使用自供材機9側所輸出的推桿9c的位置資 料之結構。 若依據這樣所構成之實施形態之棒材的振動停止裝 置，則如圖9的流程所示，首先，作動控制手段1 8控制 主軸控制手段17的作動，藉此主軸1藉由以NC程式所 預先指定之加工旋轉數N進行旋轉，而主軸台4以所預 先指定之輸送量F移動（步驟S11)。 -21 - 201201930 又，作動控制手段1 8將已被檢測到的推桿9c的位置 Z與記憶於作動控制手段1 8之前述範圍Μ進行比較（步 驟S12、步驟S13 )，當判定爲推桿9c處於範圍Μ內 時，作動控制手段1 8控制主軸控制手段1 7的作動’讓加 工旋轉數Ν降低預定比例，亦可因應需要一倂降低輸送 量F (步驟S14 )。 然後，當推桿9c的位置Ζ脫離到範圍Μ外（Ζ2 < Ζ )時，作動控制手段1 8控制主軸控制手段1 7的作動’ 讓主軸1的加工旋轉數Ν上升至原來所預先指定之加工 旋轉數Ν，並且當加工旋轉數Ν降低的同時輸送量F也降 低時，讓輸送量也返回至原來的輸送量F (步驟S11)。 若依據如此所構成之棒材的振動停止裝置，則即使在 棒材1 1的實際振動未產生之狀態，推桿9c則處於預測會 產生棒材11的振動之特定的範圍Μ內，在棒材11的振 動產生機率高之狀態下，在實際要產生振動前，藉由使主 軸1的加工旋轉數Ν降低，能夠預先防止棒材11的實際 振動的產生。 再者，輸送量之變更，亦可作成爲棒材11的Ζ軸方 向之輸送量與加工工具的切入方向之輸送量中的至少其中 —方。 因應藉由位置感應器3 1所檢測到的位置Ζ使主軸1 的加工旋轉數Ν改變，然後使其回復到原來的加工旋轉 數Ν之利用作動控制手段1 8對主軸控制手段1 7之如圖9 所示的控制的處理順序，實際上，亦可與檢測棒材1 1的 -22- 201201930 實際振動之如圖3所示的控制之處理順序予以組合，將其 組合後之全體的處理順序則如圖1 〇所示者》 在此實施形態亦可作成爲下述結構，即，當檢測到棒 材11的振動時，或推桿9c的位置處於前述範圍Μ內而 視爲檢測到振動時，使主軸1的加工旋轉數上升，而當檢 測到振動的收斂時，或推桿9c的位置處於前述範圍Μ外 而視爲檢測到振動的收斂時，使主軸1的加工旋轉數Ν 降低至原來的加工旋轉數。 在此情況，因應需要而一倂進行之輸送量F的變更， 係作成爲伴隨加工旋轉數Ν的上升而增大輸送量F，或伴 隨加工旋轉數Ν的降低而減少輸送量F者。 本申請案係依據2010年3月24日日本專利申請案之 曰本特願20 1 0-067423主張其優先權，其所有的揭示內容 完全依據參照該說明書所記載。 【圖式簡單說明】 圖1係搭載有本發明之振動停止裝置的工作機械之主 軸部分的局部側斷面圖。 圖2係NC裝置的槪略影像圖。 圖3係作動控制手段的作動的槪要之流程圖。 圖4 ( A )〜（C )係顯示振動檢測手段的其他實施例 之要部側斷面圖。 圖5係顯示在供材機設有振動感應器的形態之圖。 圖6 ( A )係顯示棒材被振動停止滾子所導引的狀 -23- 201201930 態，（B )係顯示利用振動停止滾子所進行之棒材的導引 被解除的狀態之圖。 圖7係顯示在推桿具備位置感應器的狀態之模式圖。 圖8係顯示適用視爲因應推桿的位置檢測了棒材的振 動之結構的形態之方塊圖。 圖9係顯示圖7、8所示的實施形態之作動控制手段 的作動的槪要之流程圖。 圖1〇係顯示對因應有無棒材的實際振動的檢測之處 理順序（圖3)組合因應藉由位置感應器所檢測到的位置 之處理順序（圖9 )後的處理順序之流程圖。 【主要元件符號說明】 1 :主軸 2 :夾持裝置 3 :機內電動機 4 :主軸台 5 :導軌 6 :機座 7 :內插管 8 :支承體 9 :供材機 9a :導件 9b :指部 9c :推桿 -24- 201201930 1 1 :棒材 π b :後端部 1 2 :振動感測器 1 3 :細縫 14 :保持體 16 : NC裝置 1 7 :主軸控制手段 1 8 :作動控制手段 21 :托架 22 :內插管保持體 3 0 :振動停止滾子 3 1 :位置感測器 F :輸送量 -25-201201930 VI. Description of the Invention [Technical Field of the Invention] The present invention relates to a vibration stopping device for a bar held by a main shaft. [Prior Art] A vibration detecting device that detects vibration of a bar that is held by a rotating main shaft with a predetermined number of machining rotations, a vibration suppressing means that suppresses vibration of the bar, and an operation of controlling the vibration suppressing means The control means and the actuation control means are known as a vibration stop means for the bar to actuate the vibration suppression means based on the detection of the vibration of the bar by the vibration detecting means (for example, Patent Document 1). [Patent Document 1] Japanese Patent No. 33 57279 (page 3-5, Figs. 1, 3-6) [Problem to be Solved by the Invention] The vibration stop device of the bar is configured as a vibration suppression means The bar holding means for holding the circumferential surface of the bar is configured, and the actuating control means causes the bar holding means to approach or move away from the circumferential surface of the bar in the lateral direction in accordance with the vibration level of the bar. Therefore, when the vibration of the bar is suppressed by the vibration suppressing means (bar holding means), the bar holding means abuts against the bar, and the peripheral surface of the bar is blocked by the bar by the suppression of the vibration of the bar. Disadvantages caused by scratches, bends, etc. -5-201201930 [Means for Solving the Problem] In order to solve the above-described problems, the vibration stop device for a bar of the present invention includes a vibration for detecting a bar that is held by a spindle that rotates at a predetermined number of machining revolutions. a vibration detecting means; a vibration suppressing means for suppressing vibration of the bar; and an actuating control means for controlling the action of the vibration suppressing means based on the detection of the vibration of the bar by the vibration detecting means, wherein the vibration suppressing means is controlled The rotation number control means of the number of rotations of the main shaft is configured, and the operation control means controls the operation of the rotation number control means so as to change the number of rotations of the main shaft in accordance with the detection of the vibration of the bar by the vibration detecting means. The movement of the vibration of the bar due to the change in the number of rotations of the main shaft causes the number of rotations of the main shaft to return to the number of machining revolutions, and controls the operation of the rotation number control means. Here, the actuation control means may control the operation of the rotation number control means based on the detection of the vibration of the bar by the vibration detecting means to reduce the number of rotations of the main shaft, and may also control the rotation number control means. The action makes the number of rotations rise. Further, when the rotation number control means is controlled to reduce the number of rotations of the main shaft, the actuation control means controls the rotation number control means to converge the vibration of the bar by the change in the number of revolutions of the main shaft. Let the number of rotations of the spindle rise to the original number of machining revolutions. In addition, when the number of rotations of the spindle is increased by controlling the operation of the number-of-rotation control means, the actuation control means controls the rotation number control means to perform the movement of the spindle, so that the bar produced by the change in the number of revolutions of the spindle is used. The convergence of the vibration causes the number of revolutions of the main shaft to drop to the original number of machining revolutions. In the vibration stop device of the bar of the present invention, the vibration detecting means is preferably configured to detect the vibration of the bar at a position between the feeder for supplying the bar to the spindle and the spindle table supporting the spindle. In the vibration stop device for a bar of the present invention, the vibration detecting means is arranged to detect the vibration of the bar on the side of the main shaft table supporting the main shaft. In the vibration stopping device for the bar of the present invention, the vibration detecting means is preferably constituted by a vibration sensor for detecting the vibration of the cylinder through which the bar passes. In the vibration stopping device for a bar of the present invention, the structure of the vibration detecting means is formed by a displacement sensor for detecting the position of the bar, and the bar is closer to a predetermined distance than the displacement sensor. It is better to detect the vibration of the bar. In the vibration stop device of the bar of the present invention, the vibration detecting means is preferably a vibration sensor for detecting the vibration of the feeder for supplying the bar to the spindle. The vibration stop device for a bar of the present invention includes a position detecting means for pressing the rear end portion of the bar to move the bar in the axial direction of the main shaft to detect the position of the bar supply means supplied to the main shaft. The position detecting means further comprises the operation control means being configured to control the operation of the rotation number control means such that the position of the bar supply means detected by the position detecting means is determined to be specific to the vibration of the predicted bar. When the range is within, the number of rotations of the spindle is changed to be good. In the vibration stop device for a bar of the present invention, there is a means for changing the amount of conveyance 201201930, which is preferably a change in the amount of rotation of the spindle to change the amount of conveyance of at least one of the processing tool and the bar for processing the bar. . [Effect of the Invention] The vibration stop device of the bar of the present invention is a structure in which the number of rotations of the main shaft is changed by the vibration suppression means to cause the vibration of the bar to converge, instead of the bar holding means or the like contacting the vibrating bar. Therefore, it is possible to prevent the occurrence of a problem such as a flaw on the circumferential surface of the bar or a bending of the bar due to contact with the bar holding means or the like. Further, when the vibration of the bar is converged by changing the number of rotations of the main shaft, the number of rotations of the main shaft is restored to the original number of machining revolutions, so that it is possible to process the predetermined processing conditions before the occurrence of the vibration. The number of rotations continues to be processed. According to the present invention, according to the actuation control means, the number of rotations of the main shaft is lowered in accordance with the detection of the vibration of the bar by the vibration detecting means, and the vibration of the bar is converged. When the number of rotations of the main shaft is increased to the original number of machining rotations, and the operation of the rotation number control means is controlled, the number of rotations of the main shaft is increased to a predetermined number of machining rotations by the convergence of the vibration of the rod. It is possible to prevent the spindle from rotating at a low number of rotations for a longer period of time than necessary, and it is possible to suppress the processing time from becoming long and to prevent the processing efficiency from being lowered. According to the present invention, the number of revolutions of the main shaft is increased by detecting the vibration of the rod by the vibration detecting means based on the actuation control means, and the rotation of the rod is reduced by the convergence of the vibration of the rod -8 - 201201930. When the number of rotations of the original number is controlled, the operation of the rotation number control means is controlled, and the vibration of the bar is converged by the increase in the number of rotations of the main shaft, and the vibration of the bar is made lower than the decrease in the number of rotations of the main shaft. The agglomerator can suppress the degree of processing time becoming longer. Further, by the convergence of the vibration of the bar and returning to the predetermined number of original machining revolutions, the machining quality of the predetermined number of machining revolutions can be secured. According to the present invention, when the vibration detecting means is arranged to detect the vibration of the bar at a position between the feeder for supplying the bar to the spindle and the spindle table supporting the spindle, the amplitude of the bar can be changed. A large position detection vibration can improve the detection accuracy of the vibration of the bar. In the present invention, by arranging the vibration detecting means to detect the vibration of the bar on the main shaft side of the supporting main shaft, it is also possible to relatively easily detect the vibration of the bar on the main shaft side. Further, in the present invention, as the vibration detecting means, a vibration sensor for detecting the vibration of the cylinder through which the rod passes, a displacement sensor for detecting the position of the rod, and the like are preferably used. Further, there is a case where the rods having a small diameter (for example, a diameter of about 1 [mm]) are easily vibrated at the both ends as a rope when the knot is skipped, and the diameter is relatively thick ( For example, a bar having a diameter of 10 [mm] or more and a bar having a short length do not cause the action of the string as in the above-described skipping, and the end opposite to the end on the main shaft side to be fixed is formed. The case of a large vibration form. ~ 9 - 201201930 Further, since the end portion on the opposite side to the end portion on the main shaft side is located on the feeder side, the vibration detecting means is used as the vibration sensor for detecting the vibration of the feeder by the present invention. It is possible to appropriately detect the vibration of the rod having a relatively large diameter and the rod having a short length by detecting the vibration of the feeder. Further, in the present invention, when the position of the bar supply means detected by the position detecting means is in a specific range (or a specific position) at which the vibration of the bar is predicted to occur, the actuation control is performed. The means for controlling the vibration suppression means (rotation number control means) by means of changing the number of rotations of the main shaft means that the actual vibration of the bar can be prevented in a state where the probability of vibration of the bar is high. Further, in the present invention, it is possible to prevent the processing accuracy from being lowered by changing the conveyance amount changing means for processing the conveyance amount of at least one of the processing tool and the bar for processing the bar in accordance with the number of rotations of the spindle. [Embodiment] As shown in Fig. 1, a main shaft 1 of a working machine equipped with an embodiment of the vibration stopping device of the present invention has a hollow cylindrical shape. A gripping device 2 is attached to the front end of the main shaft 1. The spindle 1 is supported by the spindle head 4 by the in-machine motor 3 so as to be rotatable. The spindle head 4 is slidably supported by the guide rail 5 in the axial direction (Z-axis direction) of the spindle 1, and the guide rail is mounted on the base 6 of the machine tool. In the housing 6, the hollow inner insertion tube 7 (cylinder) inserted into the main shaft 1 at the rear end side of the main shaft 1 is fixed via the support body 8. The inner cannula 7 is supported at a position rearward of the main shaft 1. The support body 8 is disposed at a position slightly behind the end of the guide head 9a of the feeder 9 disposed at the rear of the machine tool 4 at the rear end of the headstock -10-201201930. In the inner cannula 7, a rod-shaped material (bar) 11 is inserted from the material feeder 9. The bar U protrudes from the front end of the main shaft 1 through the inner tube 7'. The rod 11 is held by the spindle 1 by the gripping device 2. In the same manner as in the related art, the rotation of the spindle I in the state in which the rod 1 is gripped by the control of the NC device of the Nc program and the movement in the Z-axis direction of the spindle table 4 are used to drive the bar 11 The protruding portion that protrudes from the main shaft 1 is configured as an NC rotary disk that is processed by a processing tool (not shown). As described above, the working machine of the present embodiment moves the spindle 1 in the Z-axis direction by the movement of the spindle head 4, so the amount of conveyance of the bar η depends on the amount of conveyance of the spindle table 4 in the Z-axis direction (spindle per i The amount of rotation is determined). Further, the inner insertion tube 7' is provided with a vibration sensor 12 (vibration detecting means) for detecting the vibration of the inner tube 7. The vibration sensor 12 is provided with a holding body 14 having a slit 13 formed therein. The vibration sensor 12 is attached to the inner cannula 7 by inserting the inner cannula 7 into the slit 13 and holding the inner cannula 7 with the holding body 14. When the rod 11 is vibrated due to the rotation of the main shaft 1, the inner tube 7 is vibrated due to the vibration of the rod 11. The vibration sensor 12 is set to detect the vibration of the inner cannula 7 in accordance with the vibration of the rod 11. That is, the vibration sensor 12 is configured as a vibration detecting means for detecting the vibration of the rod 11 by detecting the vibration of the inner tube 7. -11 - 201201930 The vibration sensor 12 is disposed in the vicinity of the support body 8 at the rear end of the spindle head 4 and the end of the guide 9a of the feeder 9, and the amplitude of the rod 1 1 becomes vibration. Since the vibration is detected at a large position, the vibration of the bar 11 can be detected with high precision. In particular, when the rod 1 1 having a small diameter (for example, a diameter of 1 [mm] or the like is vibrated, between the rear end of the headstock 4 and the end of the guide 9a, the skipping rope vibrates like a rope, so that the spindle is The position of the rear end of the stage 4 and the end of the guide 9a is slightly intermediate, and the amount of vibration is maximized. Therefore, the detection of the vibration performed at this position becomes high precision. As shown in Fig. 2, the NC device 16 is provided with a spindle control means 17 (including a rotation number control means (vibration suppression means) for controlling the number of rotations of the spindle 1 and the amount of conveyance of the spindle head 4. Further, the NC device 16 is provided with an operation control means I 8 for controlling the operation of the spindle control means 17 in accordance with the output of the vibration sensor 12. The output from the vibration sensor 12 is input to the side of the actuation control means 18. In the present embodiment, the spindle control means 17 and the actuation control means 18 are realized by the NC device 16 in accordance with the NC program on the NC device 16 side. As shown in the flow of FIG. 3, the actuation control means 18 first sets the number of rotations of the main shaft 1 and the conveyance amount of the spindle head 4 to be designated in advance by the NC program when the processing of the bar 11 is performed. (Setting) The predetermined number of machining revolutions N and the amount of conveyance F. Then, the actuation control means 18 controls the operation of the spindle control means 17 so that the working machine uses the spindle control means 17 to rotationally drive the spindle 1 by the number of machining revolutions -12 - 201201930, and the spindle table 4 is fed by the amount F Move, start processing. Next, in step S2, the number of machining rotations N and the predetermined minimum number of rotations Nrniri are compared. When the machining rotation number N is larger than the minimum rotation number Nmin (Nmin S N ), the routine proceeds to step S3 to check the output from the vibration sensor 12. Further, when the number of machining rotations N is less than the minimum number of rotations Nmin (N< Nmin ), since the working machine does not meet the predetermined minimum number of rotations (appropriate machining conditions), the process proceeds to step S4. The actuation control means 18 controls the operation of the spindle control means 17 to cause an alarm to occur and stop machining. When the process proceeds to step S3, when the vibration sensor 12 detects that the inner tube 7 is largely vibrated due to the large vibration of the rod 11 exceeding a predetermined vibration (allowable vibration), the process proceeds to step S5. The operation of the spindle control means 17 is controlled such that the operation control means 18 lowers the machining rotation number N of the spindle 1 at a predetermined ratio and then sets it, and then proceeds to step S6. Thereby, the spindle 1 is rotationally driven by the number of machining revolutions N which is reset by the spindle control means 17. Further, in step S3, when the vibration of the inner cannula 7 is not detected by the vibration sensor 12 (that is, the turbulence (vibration) of the bar 1 1 is not detected), the process returns to step S1, by The machining is continued by the predetermined number of machining revolutions N and the amount of conveyance F specified by the NC program. As a result, the processing of the predetermined number of machining rotations N and the amount of conveyance F specified in advance by the NC program is continued until -13,019,019,030 lines after the processing of the bar 1 1 is not generated. The processing of steps S1 to S3 is performed. In step S6, it is judged whether or not the conveyance amount F (the conveyance amount F set in advance by the NC program) for the number of machining rotations N that has been reset is appropriate. When it is determined that the number of machining revolutions N has been reset, and it is necessary to lower the conveyance amount F, the routine proceeds to step S7, and the control by the main engine control means 17 by the actuation control means 18 is lowered by a predetermined ratio. The conveyance amount F is reset and then returns to step S2. Thereby, the spindle head 4 is moved by the transport amount F which is re-set by the spindle control means 17, so that the transport amount F of the bar U is changed. When it is determined that the conveyance amount F is not required to be reduced for the number N of machining revolutions to be reset, the re-setting of the conveyance amount F is not performed, and the process returns to step S2. The change of the conveyance amount F of the machining number N to be re-set is determined by setting the conveyance amount F of the predetermined number of machining rotations N to the NC unit 16 side or the like in advance according to the cutting or the like. When the process returns from step S6 or step S7 to step S2, in step S2, the number of machining rotations N and the minimum number of rotations Nmin that have been reset are compared, and the number of machining rotations N that has been reset is smaller than the minimum rotation. When the number Nmi η is large, the process proceeds to step S3. When the number of machining rotations that have been reset is less than the minimum rotation number Nmin, the process proceeds to step S4. The working machine is detected by the actuation control means 18' in the processing of the predetermined number of machining revolutions N and the amount of conveyance F specified by the Nc program, the vibration of the raw material 1 - 201201930 When the inner tube 7 vibrates, the vibration of the rod 1 1 converges and the vibration of the inner tube 7 converges, and the spindle 1 is made in the range of the minimum rotation number Nmin or more by the steps S2, S3, and S5 of the actuation control means 18. When the number of machining rotations N is lowered, the machining is performed. When the vibration of the rod 11 converges and the vibration of the inner insertion tube 7 converges, the step S3 of the self-actuation control means 18 returns to the step S1, so that the number of machining rotations rises to the NC program. The predetermined number of machining rotations N specified in advance is returned to the machining performed by the machining rotation number N. As shown in the flow of FIG. 3, the actuation control means 18 is used to control the vibration of the inner cannula 7 (vibration of the rod 11) by the vibration sensor 12, and the spindle control means 17 is actuated. Means to function. Further, generally, in the NC program, the number of rotations as high as possible in the number of machining rotations in the range where the turbulence of the bar 11 does not occur is generally specified as the number of machining rotations N. However, the bar 11 may be falsified while being processed by a predetermined number of machining revolutions N predetermined by the NC program due to slight bending or the like. However, when the turbulence is a temporary factor caused by external turbulence or the like, the turbulence of the rod 1 1 can be converged by temporarily reducing the number of rotations of the main shaft 1 (bar 11). Further, since the turbulence caused by the temporary factor is converge, the number of rotations of the spindle 1 is again increased to the predetermined number of machining rotations N predetermined by the NC program after the turbulence of the bar 11 is converged. There is no possibility of turbulence caused by the upper limit of the number of rotations. Therefore, it is possible to appropriately raise the number of machining rotations N specified by the preset -15-201201930. Therefore, the vibration stop device of the present embodiment can prevent the processing of the bar 1 1 from being swayed, and the processing accuracy can be prevented from being lowered. In particular, unlike the conventional structure in which the rod 1 is brought into contact with the rod holding means and the vibration is converged, the rotation of the rod 11 is converged by reducing the number of rotations of the main shaft 1 (bar 11). It is possible to prevent the occurrence of scratches or the like on the circumferential surface of the rod 11 caused by the contact of the rod 11 with the rod holding means or the like, and it is possible to smoothly perform the processing of the product without causing a decrease in precision or occurrence of scratches. Further, the machining efficiency of the number of processed products per unit time or the like is determined by the predetermined number of machining rotations N specified in advance by the NC program. In the vibration stop device of the present embodiment, the machining efficiency is lowered when the number of rotations N is lowered. However, the decrease in the number N of machining turns is temporary, and when the turbulence of the bar 11 converges, the number of machining revolutions N Since the predetermined number of machining rotations N predetermined by the NC program is increased, the machining efficiency is not extremely lowered, and the machining efficiency can be prevented from being extremely lowered. Further, in the present embodiment, the processing of the actuation control means 18 in steps S6 and S7 is configured to reset the delivery amount F in accordance with the re-setting of the machining number N (specifically, corresponding to the machining rotation). When the number N is lowered, the conveying amount F is also lowered). In other words, the actuation control means 18 serves as a conveyance amount changing means for changing the conveyance amount F of the rod 11 in response to the number of rotations of the main shaft 1 by the steps S6 and S7 of the flow. Thereby, it is possible to prevent the cutting abnormality -16 - 201201930 due to the decrease in the number of machining revolutions, and it is possible to prevent the machining accuracy from being lowered. However, if there is no defect such as a cut abnormality, it is not always necessary to reset the conveyance amount F of the bar 11 in accordance with the re-setting of the machining number N. Further, in the case of the automatic turning machine in which the spindle-type automatic rotary disk or the spindle (the spindle table) and the machining tool (tool table) move in the Z-axis direction, the following configuration may be employed, that is, the machining tool may be changed. The amount of conveyance in the Z-axis direction, the amount of conveyance in the Z-axis direction of both the processing tool and the spindle, and the amount of conveyance F of the bar 1 1 are changed. Further, the moving speed of the processing tool in the cutting direction of the bar 11 (the amount of movement per one rotation of the main shaft) may be used as the conveying amount of the processing tool, and the work control means 18 may be configured such that only the bar 1 1 Both the conveyance amount F and the conveyance amount of the machining tool or the conveyance amount of only the machining tool are changed in accordance with the number of rotations of the main shaft 1. In this case, it is possible to prevent an abnormality in the cutting due to a decrease in the number of machining revolutions, and it is possible to prevent the machining accuracy from being lowered. As shown in FIG. 4(A), the inner insertion tube 7 is fixed to the spindle table 4 side. In the case of the case, the vibration sensor 12 can also be attached to the support body 8 via the bracket 2 1 . In this case, the bar 1 is detected by the bar π being supplied to the main shaft 1 through the inside of the bracket 21 to detect the vibration of the bracket 21 caused by the vibration (fluctuation) of the bar 1 1 Vibration (turbulence) ^ Further, the vibration sensor 12 may be attached to the inner tube holder 22 (support body) attached to the spindle head 4 in order to hold the inner tube 7 as shown in FIG. 4(B). side). In this case, the bar 11 is supplied to the main shaft 1 through the inner tube retaining body 22 to detect the inner cannula holder 22 caused by the vibration of the bar u 17-201201930 (fluctuation). Vibration to detect the vibration (fluctuation) of the bar 11. The vibration sensor 1 2 can be easily attached to the headstock 4 side as described above, and the vibration (fluctuation) of the bar 1 1 can be easily detected. Further, as shown in Fig. 4(C), the displacement sensor 23 may be attached to the bracket 21 as a vibration detecting means for detecting the vibration of the rod 11. In this case, the distance from the displacement sensor 23 to the rod 11 in the bracket 21 (the distance along the radial direction of the rod 11) can be detected by the displacement sensor 23. The detecting bar 11 is closer to the displacement sensor 23 than the predetermined distance to detect the vibration (fluctuation) of the bar 11. Further, it is also possible to detect the vibration (fluctuation) of the rod 1 1 by detecting the sound when the vibration of the rod 11 is generated by a microphone or the like. Further, when the vibration detecting means such as the vibration sensor 12 and the displacement sensor 23 detects the vibration of the rod 1 1 , the actuation control means 18 controls the operation of the spindle control means 17 to process the spindle 1 . The number of rotations N is increased by a predetermined ratio and reset. When the vibration of the rod 11 converges, the actuation control means 18 controls the operation of the spindle control means 17 to lower the number N of machining revolutions of the spindle 1 to the original machining rotation. The number N (the number of machining rotations specified in advance by the NC program) is reset. In this way, the vibration of the rod 11 can be made not only to lower the number of rotations of the main shaft 1, but also to increase the number of rotations, and to converge by changing the number of rotations. When the vibration of the rod 11 converges, the spindle 1 is made to converge. Since the number of rotations is restored to -18-201201930, the number of original machining revolutions can be continuously processed by the number of machining revolutions before the vibration is generated as a predetermined predetermined processing condition. Further, as shown in Fig. 5, the vibration detecting means may be provided as the vibration sensor 12 for detecting the vibration of the material feeder 9 in the feeder 9. A rod 1 1 having a small diameter (for example, a diameter of 1 [mm]) is provided at both ends (one end portion is a portion fixed to the holding device 2 provided at the tip end of the main shaft 1 and the other end portion is The portion guided by the leading end of the guide 9a of the feeder 9 is likely to vibrate as the rope for the skipping rope, and the bar 11 having a relatively large diameter (for example, a diameter of 1 〇 [mm] or more) is In the case of the above-described operation of the skipping rope, the end portion (the other end portion) on the side opposite to the end portion (the one end portion) on the fixed spindle 1 side is greatly vibrated. In this case, the feeder 9 at the other end is transmitted by the vibration of the bar 11 and vibrates. Therefore, it is possible to adopt a configuration in which, for example, a bracket 21 is attached to the main body (outer case or the like) of the material feeding machine 9, and the vibration sensor 12 as a vibration detecting means is provided in the bracket 21, and the feeding can be detected. The vibration of the machine 9 appropriately detects the vibration of the bar 1 1 having a relatively large diameter. In the case where the length of the rod 11 is short, the other end portion on the side opposite to the one end portion on the side of the main shaft 1 to be fixed may be formed in the same manner as the above-described rod 11 having a relatively large diameter. In the case of a large vibration, the vibration sensor 12 is provided in the feeder 9 for the apparatus for processing the rod 11 having a short length, and the vibration of the rod 11 having a short length can be appropriately detected. . -19-201201930 As shown in Fig. 6, when the bar 11 is supplied to the spindle 1 by the feeder 9, the feeder 9 is provided on the pusher 9c (constructed with the finger 9b described later). The finger end portion 9b of the rod supply means) grips the rear end portion lib of the rod 11 and moves the push rod 9c in the Z-axis direction, whereby the finger portion 9b presses the rod 1 1 toward the axial direction of the main shaft 1. At the rear end portion, the rod 11 is moved and supplied to the main shaft 1. Between the main shaft 1 and the feeder 9, there is a case where the vibration stopping roller 30 is provided, and the roller is sandwiched and guided by the rods 11 between the two, thereby suppressing the vibration of the rod 11. When the length of the bar 11 supplied to the main shaft 1 is short in the state of Fig. 6(A), the bar 11 is in contact with the vibration stopping roller 30, and the vibration thereof is suppressed, but, as shown in Fig. 6 (B) In the state of the rod 1, the bar 11 is short, and when the finger 9b stops the roller 30 by vibration, the vibration stop roller 30 is moved in the K direction so as to allow the passage of the finger portion 9b, and the self-pushing rod 9c ( The finger portion 9b) is separated, and at the position Z1 of the push rod 9c, the guiding operation of the rod 11 by the vibration stop roller 30 is released, and the rod 11 is easily vibrated. In this case as well, when the rod 11 is vibrated, the vibration of the rod 11 is transmitted to the body of the feeder 9 as vibration through the fingers 9b and the push rod 9c, and therefore, by the feeder 9 The vibration sensor 1 2 is mounted, and the vibration of the bar 11 can be appropriately detected. Further, in order to stop the roller 30 by the vibration in which the finger portion 9b passes in the K direction, even after the finger portion 9b passes, the push rod 9c is similarly held without being displaced in the opposite direction to the K direction. However, with the supply of the spindle 1 to the spindle -20-201201930 11, the length of the bar 11 protruding from the rear end of the autonomous shaft 1 becomes short, and when the position of the push rod 9c reaches the predetermined position Z2, the bar 11 The state that is easy to vibrate will converge. Therefore, in the vicinity of the position where the finger portion 9b is to stop the roller 30 by vibration, the position range of the push rod 9c in which the rod 11 is likely to vibrate can be set in advance, that is, the specific range in which the vibration of the rod 11 is generated is predicted. Μ (as the position of the position Ζ1 to position Ζ2 of the position of the push rod 9c). Further, as shown in Figs. 7 and 8, a position sensor 31 for detecting the position of the push rod 9c in the Z-axis direction may be provided as the position detecting means, and the actuation control means 18 may be used as the control spindle control means 17 The operation causes the number of machining revolutions of the main shaft 1 to change when the position of the push rod 9c detected by the position sensor 31 is within a specific range 预测 of the Z-axis direction in which the vibration of the rod 11 is predicted to be generated. When the position of the finger portion 9b is outside the aforementioned range (the range deviated from the specific range), the machining rotation number 主轴 of the main shaft 1 is returned to the original machining rotation number Ν. Furthermore, the range Μ may not be the range of the width (position Ζ1 to position Ζ2), but the position of the precise punctuation. Further, the position sensor 31 can also be configured to use the positional information of the push rod 9c output from the side of the feeder 9. According to the vibration stop device of the bar configured as described above, as shown in the flow of Fig. 9, first, the actuation control means 18 controls the operation of the spindle control means 17, whereby the spindle 1 is controlled by the NC program. The predetermined number of machining revolutions N is rotated, and the spindle head 4 is moved by the predetermined amount of conveyance F (step S11). -21 - 201201930 Further, the actuation control means 18 compares the position Z of the detected push rod 9c with the aforementioned range 记忆 stored in the actuation control means 18 (steps S12, S13), and determines that the pusher is When 9c is in the range ,, the actuation control means 18 controls the operation of the spindle control means 17 to lower the machining rotation number by a predetermined ratio, and may also reduce the conveyance amount F as needed (step S14). Then, when the position of the push rod 9c is out of the range (Ζ2 < Ζ ), the actuation control means 18 controls the operation of the spindle control means 17 to increase the number of machining revolutions of the spindle 1 to the original predetermined When the number of rotations is processed, and the conveyance amount F is also lowered while the number of machining rotations is decreased, the conveyance amount is also returned to the original conveyance amount F (step S11). According to the vibration stop device of the rod material thus constituted, even if the actual vibration of the rod 1 1 is not generated, the push rod 9c is in a specific range within the range in which the vibration of the rod 11 is predicted to occur. In the state where the vibration of the material 11 is high, the actual number of vibrations of the rod 11 can be prevented in advance by reducing the number of machining revolutions of the main shaft 1 before actually generating the vibration. Further, the change in the conveyance amount may be at least one of the conveyance amount of the bar 11 in the direction of the yaw axis and the conveyance amount of the cutting direction of the processing tool. The rotation control number of the main shaft 1 is changed by the position Ζ detected by the position sensor 31, and then returned to the original machining rotation number 利用 by the actuation control means 18 for the spindle control means 17 The processing sequence of the control shown in Fig. 9 can be actually combined with the processing sequence of the control shown in Fig. 3 for detecting the actual vibration of -22-201201930 of the bar 1 1 and the entire process of combining them. The order is as shown in FIG. 1 ′. In this embodiment, the structure may be such that when the vibration of the bar 11 is detected, or the position of the push rod 9c is within the aforementioned range, it is regarded as detected. In the case of vibration, the number of machining revolutions of the main shaft 1 is increased, and when the convergence of the vibration is detected, or the position of the push rod 9c is outside the aforementioned range, it is regarded as the convergence of the detected vibration, and the number of machining revolutions of the main shaft 1 is made Ν Reduce to the original number of machining revolutions. In this case, the change in the conveyance amount F is performed as needed, and the conveyance amount F is increased as the number of rotations of the machining is increased, or the conveyance amount F is decreased as the number of rotations of the machining is decreased. The present application claims priority to Japanese Patent Application No. 20 1 0-067423, the entire disclosure of which is hereby incorporated by reference. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial side sectional view showing a main shaft portion of a machine tool equipped with a vibration stopping device of the present invention. 2 is a schematic image view of an NC device. Figure 3 is a flow chart of the actuation of the actuation control means. Fig. 4 (A) to (C) are side sectional views showing the principal part of another embodiment of the vibration detecting means. Fig. 5 is a view showing a form in which a vibration sensor is provided in a feeder. Fig. 6 (A) shows a state in which the bar is guided by the vibration stop roller -23-201201930, and (B) shows a state in which the guidance of the bar by the vibration stop roller is released. Fig. 7 is a schematic view showing a state in which the push rod is provided with a position sensor. Fig. 8 is a block diagram showing a configuration in which the structure of the vibration of the bar is detected in consideration of the position of the push rod. Fig. 9 is a flow chart showing the operation of the operation control means of the embodiment shown in Figs. Fig. 1 is a flow chart showing the processing sequence after the processing sequence (Fig. 9) of the position detected by the position sensor is combined in the order of detection of the actual vibration of the bar (Fig. 3). [Description of main component symbols] 1 : Spindle 2: Clamping device 3: In-machine motor 4: Spindle table 5: Guide rail 6: Base 7: Inner cannula 8: Support body 9: Feeder 9a: Guide 9b: Finger 9c: pusher-24-201201930 1 1 : bar π b : rear end 1 2 : vibration sensor 1 3 : slit 14 : holder 16 : NC device 1 7 : spindle control means 1 8 : Actuation control means 21: bracket 22: inner cannula holder 3 0: vibration stop roller 3 1 : position sensor F: delivery amount - 25 -