200906537 九、發明說明 【發明所屬之技術領域】 本發明是關於旋轉切削工具及基準位置檢測方法。 【先前技術】 如第1圖所示，切削機（旋轉加工機械）的主軸是透 過夾持具A安裝有端銑刀或鑽頭等旋轉切削工具B，在利 用該工具B對載放在工作台表面F上的工件C進行切削 加工時，一般是以工件C上面位置爲基準製成加工程序進 行切削加工。因此，正確掌握工件C上面位置和主軸上所 安裝的工具B前端位置之相對距離將其反映在加工程序是 進行高精度切削加工時重要的事項。另，第1圖是圖示著 縱向式切削機，但對於橫向式切削機同樣是重要的事項。 具體而言，以安裝在切削機主軸，工具B (不旋轉之 停止狀態的工具B )前端和工件C上接觸一致時的工具軸 方向座標爲基準位置（〇點）。該狀況下，工具B前端和 工件C上面單純接觸時設置在工具前端的切削刃產生破片 ，或若爲小徑工具B時折損的可能性高。因此，在工件C 上面設置事先已知尺寸（底面至頂面的高度）的專用接觸 式位置檢測器D，以扣除該接觸式位置檢測器D的已知尺 寸算出工件C上面位置（基準位置）。 接觸式位置檢測器D，例如專利文獻1所揭示，具有 可突出設置在檢測器本體的感壓部E，該感壓部E是構成 由適宜的彈推構件彈推朝工具側，一般的構成是在上述感 -5- 200906537 壓部E反抗上述彈推構件的彈推力形成縮入時 E的縮入進行檢測藉此感測到工具的推壓透過 報訊。 此外，也有不使用上述接觸式位置檢測器 專利文獻2揭示之以雷射或C C D照相機進行 非接觸式位置檢測裝置。另，也有將該非接觸 裝置組入在切削機加以利用的案例。 然而，非接觸式位置檢測器價格高，使用 制，再加上檢測對象徑也受到限制等導致普及 另外，非接觸式位置檢測器，例如在前端 象工具的前端附著有切削油的狀態（就一般的 言並不少見）下進行位置檢測時，會產生該切 誤差’但關於這點，若是接觸式位置檢測器， 有切削油對工具前端位置精度的影響也不大。 一般而言’接觸式位置檢測器，其構造簡 並且環境條件適應性佳，對於位置檢測時工具 切削刃有無破損’只要是在能夠接受的容許範 測對象又不受限制’因此實際上多數業者還是 位置檢測器。 〔專利文獻1〕日本特開2006-62061號公 〔專利文獻2〕日本特開2001-328049號4 【發明內容】 〔發明欲解決之課題〕 對該感壓部 亮燈等進行 ，例如使用 位置檢測的 式位置檢測 環境有所限 性差。 位置檢測對 加工環境而 削油份量的 則即使附著 單價格便宜 有無折損， 圍即可，檢 使用接觸式 報 >報 -6- 200906537 然而，使用接觸式位置檢測器時，特別是在 外徑爲0.1 mm以下的極小徑工具時，工具和接 檢測器接觸時容易產生工具折損或破片，實際使 功能盡失的可能性高。 本發明是有鑑於上述實際狀況而爲的發明， 供一種工具前端不需抵接於接觸式位置檢測器， 在刃部以外的柄部等的直角面或傾斜面和工具外 叉稜線推壓接觸式位置檢測器的感壓部就可進行 檢測，即使是極小徑的鑽頭還是可使用接觸式位 以便宜成本進行精密基準位置檢測之實用性極佳 削工具及基準位檢測方法。 〔用以解決課題之手段〕 接著，參照附圖說明本發明的主旨。 本發明相關的旋轉切削工具，其是一種前端 部1又基端側具有柄部2的旋轉切削工具，其特 上述柄部2或是於突出設置在該柄部2的設有上 的突部，設置有和上述工具旋轉軸心成直角的面 此外，本發明相關的旋轉切削工具是於申請 第1項記載的旋轉切削工具中，其特徵爲，上述 ，從工具前端看是位於上述刃部1的徑向外側。 另外，本發明相關的旋轉切削工具是於申請 第2項記載的旋轉切削工具中，其特徵爲，上述 是設置在靠近上述柄部2或上述突部之前端面外 使用刃部 觸式位置 用前工具 目的是提 利用設置 圍面的交 基準位置 置檢測器 的旋轉切 側具有刃 徵爲，於 述刃部1 4 〇 專利範圍 直角面4 專利範圍 直角面4 圍的位置 200906537 又’本發明相關的旋轉切削工具是於申請專利範圍第 3項記載的旋轉切削工具中，其特徵爲，刃部外徑是0. 1 mm以下。 此外，本發明相關的旋轉切削工具，係一種前端側具 有刃部1且基端側具有柄部2的旋轉切削工具，其特徵爲 ’於上述柄部2或於突出設置在該柄部2的設有上述刃部 1的突部，設置有愈靠近工具中心側愈往工具基端側向下 傾斜的傾斜面5。 另外，本發明相關的旋轉切削工具是於申請專利範圍 第5項記載的旋轉切削工具中，其特徵爲，上述傾斜面5 ’從工具前端看是位於上述刃部1的徑向外側。 又，本發明相關的旋轉切削工具是於申請專利範圍第 6項記載的旋轉切削工具中，其特徵爲，上述傾斜面5是 設置在靠近上述柄部2或上述突部之前端面外圍的位置。 此外，本發明相關的旋轉切削工具是於申請專利範圍 第7項記載的旋轉切削工具中，其特徵爲，刃部外徑是 〇 . 1 mm以下。 另外，本發明相關的基準位置撿測方法，係一種以工 件表面19或已知和工件表面19之相對距離的面爲基準面 ’具有載放在該基準面且頂部可感測到旋轉切削工具推壓 的感壓部7之接觸式位置檢測器6對安裝在旋轉加工機械 主軸的申請專利範圍第1項至第4項任一項所記載之旋轉 切削工具的前端和上述基準面的相對距離進行測定藉此檢 -8- 200906537 測出基準位置的基準位置檢測方法，其特徵爲，於上述感 壓部7載放調刀具9，該調刃具9具備有上述刃部1調整 用的凹部1 〇和上述直角面4抵接用的抵接部1 1，以該調 刃具9的上述抵接部11受到上述直角面4的推壓檢測出 上述基準位置。 此外，本發明相關的基準位置檢測方法，係一種以工 件表面19或已知和工件表面19之相對距離的面爲基準面 ，具有載放在該基準面且頂部可感測到旋轉切削工具推壓 的感壓部7之接觸式位置檢測器6對安裝在旋轉加工機械 主軸的申請專利範圍第5項至第8項任一項所記載之旋轉 切削工具的前端和上述基準面的相對距離進行測定藉此檢 測出基準位置的基準位置檢測方法，其特徵爲，於上述感 壓部7載放調刃具9，該調刃具9具備有上述刃部1調整 用的凹部1 〇和上述傾斜面5與工具外圍面之交叉稜線抵 接用的抵接部1 1，以該調刃具9的上述抵接部1 1受到上 述交叉稜線的推壓檢測出上述基準位置。 另外，本發明相關的基準位置檢測方法，係一種以工 件表面1 9或已知和工件表面1 9之相對距離的面爲基準面 ，具有載放在該基準面且頂部可感測到旋轉切削工具推壓 的感壓部7之接觸式位置檢測器6對安裝在旋轉加工機械 主軸的申請專利範圍第1項至第4項任一項所記載之旋轉 切削工具的前端和上述基準面的相對距離進行測定藉此檢 測出基準位置的基準位置檢測方法，其特徵爲，以上述感 壓部7受到上述直角面4的直接推壓檢測出上述基準位置 -9- 200906537 此外，本發明相關的基準位置檢測方法，係一種以工 件表面1 9或已知和工件表面1 9之相對距離的面爲基準面 ，具有載放在該基準面且頂部可感測到旋轉切削工具推壓 的感壓部7之接觸式位置檢測器6對安裝在旋轉加工機械 主軸的申請專利範圍第5項至第8項任一項所記載之旋轉 切削工具的前端和上述基準面的相對距離進行測定藉此檢 測出基準位置的基準位置檢測方法，其特徵爲，以上述感 壓部7受到上述傾斜面5與工具外圍面之交叉棱線的直接 推壓檢測出上述基準位置。 〔發明效果〕 本發明由於是構成如以上所述，因此可成爲一種不需 將工具前端抵接於接觸式位置檢測器就能夠檢測出基準位 置，即使是極小徑旋轉切削工具還是可使用接觸式位置檢 測器以便宜成本進行精密的基準位置檢測之實用性佳的旋 轉切削工具及基準位檢測方法。 【實施方式】 〔發明之最佳實施形態〕 其次，根據圖面簡單說明呈現本發明作用的最佳實施 形態。 利用安裝在切削機主軸的工具施行加工當前對基準位 置進行檢測時’以接觸式位置檢測器6的感壓部7受到刃 -10 - 200906537 部以外的柄部2等所設有的直角面4或傾斜面5和工具外 圍面之交叉稜線的直接或間接推壓可執行檢測，因此，工 具前端不用接觸於接觸式位置檢測器6，即能夠在工具前 端不受損的狀況下進行基準位置檢測，即使是容易折損的 極小徑旋轉切削工具還是能夠獲得精度良好並且成本便宜 的基準位置檢測。 〔實施例〕 以下，根據圖面說明本發明具體的實施例。 本實施例是一種前端側具有刃部1且基端側具有柄部 2的旋轉切削工具，其構成爲，於上述柄部2設有直徑比 上述刃部還大愈靠近工具中心側愈往工具基端側向下傾斜 的傾斜面5，於該傾斜面5和工具外圍面的交叉稜線設有 和上述工具的旋轉軸線成直角的邊緣8。 接著，具體說明各部構件。 刃部1是和比該刃部1直徑還大的柄部2形成連續設 置，該柄部2是透過夾具筒15保持在切削機主軸上所安 裝的工具夾持具14，該刃部1和柄部2之連設部的段差 部（柄部2的前端面）是設定成肩部3，於該肩部3設有 傾斜面5。另，工具方面，可採用刃部1和柄部2爲一體 的實心工具，也可採用刃部1和柄部2經由硬焊等結合形 成的工具。此外，也可構成爲將刃部1設置在突出設於柄 部2的複數錐形部或圓筒部等突部，在該錐形部或圓筒部 等突部（的前端面）形成有傾斜面5或下述的直角面4 ° -11 - 200906537 設置在肩部3的傾斜面5是設置在從工具前端看爲上 述刃部1徑向外側，設置成可抵接到一般接觸式位置檢測 器6的感壓部7。 具體而言，如第2圖所示，傾斜面5是遍及肩部3前 端面全面從肩部3最外圍位置朝刃部1根基位置向下傾斜 地設置成大致硏缽狀。此外，該傾斜面5是肩部3經由適 宜磨石（直徑70mm〜200mm )硏磨形成，形成爲該磨石 半徑造成的R形狀。 此外，於傾斜面5和工具外圍面（柄部2的外圍面 1 6 )的交叉稜線，設有和工具軸芯成直角的邊緣8。另， 和傾斜面5形成交叉棱線的工具外圍面，並不限於柄部2 的外圍面1 6，如第4圖所示，當在柄部2的前端部設有 做爲突部的錐形部1 7時，和傾斜面5形成交叉稜線的工 具外圍面也可以是該錐形部1 7的外圍面。 即，傾斜面5只要是構成可在與柄部2外圍面1 6的 交叉稜線形成直角邊緣8，能夠讓該直角邊緣8抵接到接 觸式位置檢測器6的感壓部7之構成（就肩部3而言是位 於最前端側的構成），則可以是任何形狀’例如傾斜面5 以不遍及肩部3前端面全面設置只要設置在一部份的構成 等。 此外，於交叉稜線的一部份設置該交叉稜線至工具前 端爲止的長度已事先測出的部位（直角邊緣8 )，爲了容 易辨別該部位而在柄部2設置記號1 8。另於本實施例中 ，爲了簡化說明該構成是如以上所述’但只要在交叉稜線 -12- 200906537 的一部份事先特定出工具前端至交叉稜線爲止的距離爲已 知的部位，則並不一定要設有直角邊緣8 (也可構成爲利 用上述傾斜面5和工具外圍面的交叉棱線當中對工具軸心 成非直角的部份推壓下述感壓部7 )。 因此，利用上述交叉稜線（直角邊緣8 )推壓接觸式 位置檢測器6的感壓部7，可不用將工具前端抵接於接觸 式位置檢測器6，就能夠檢測出工具的基準位置，即使是 刃部外徑（工具直徑）爲0. 1 mm以下容易折損的旋轉切 削工具，還是能夠獲得容易並且良好之接觸式位置檢測器 6的基準位置檢測。此外，即使是刃部外徑（工具直徑） 超過〇 . 1 mm的工具，即對於具有刃部的突部爲工具軸方 向細長（縱橫比大）容易折損的旋轉切削工具或設置在工 具前端的切削刃強度低容易產生破片的旋轉切削工具還是 能夠獲得容易並且良好之接觸式位置檢測器6的基準位置 檢測。另’如第1圖所示的工具B，當柄部前端設有錐形 部等但沒有設置上述傾斜面5或下述直角面4時，利用該 錐形部推壓感壓部7是無法進行精密的基準位置檢測。 具體而言’使用例如第3圖所示的調刃具9檢測基準 位置。該調刃具9是形成凹設有刃部丨調整用凹部1 〇的 平面方向大致C字狀體，上面設有和上述交叉稜線（直角 邊緣8) —點抵接的三角柱狀抵接部11。另，調刃具9的 高度至少是設定成交叉稜線（直角邊緣8)至工具前端爲 止的長度以上。此外’調刃具9並不限於剖面方向爲大致 C字狀體，可以是圓筒狀或角筒狀。 -13- 200906537 因此，將一般市場上販售的接觸式位置檢測器6載放 在工件表面1 9，接著將調刃具9載放在接觸式位置檢測 器6的感壓部7，在進行刃部1位於凹部10以傾斜面5 和外圍面1 6的交叉稜線使直角邊緣8可接觸到抵接部1 1 的前端稜線之位置對準後，降下工具[第2 ( a )圖—第2 (b )圖]，藉此就能夠在不接觸工具前端的狀態下利用上 述直角邊緣8透過調刃具9推壓感壓部7。 接著，從感壓部7受到推壓所感測獲得的直角邊緣8 位置，扣除接觸式位置檢測器6的高度尺寸及調刃具9的 高度尺寸，然後加上工具前端至直角邊緣8爲止的已知長 度，藉此就能夠算出基準位置（工件表面位置）。 此外，若具有已知與工件表面19之相對距離的另一 表面時（例如第1圖的工作台表面F)，於該面上載放接 觸式位置檢測器6，接著和上述相同進行位數檢測，藉由 對於上述工件表面1 9之相對距離的加減算就能夠算出基 準位置（工件表面位置），該狀況有利於例如工件表面的 面積小難以載放接觸式位置檢測器6時。 另外’也可採用構成爲利用直角邊緣8就能夠直接推 壓的接觸式位置檢測器6 ’’即可採用構成爲在直角邊緣8 和感壓部7 ’形成接觸時，工具前端（刃部1 )不會干涉到 檢測器本體2 0的接觸式位置檢測器6 ’，利用直角邊緣8 直接推壓感壓部7 ’進行基準位置檢測。例如第5圖所示 ’將感壓部7’構成爲上述調刃具9和感壓部7成爲一體 的構成’或如第6圖所示’構成爲在感壓部7’上面設有 -14- 200906537 上述同樣的抵接部11’的同時，將平面方向的檢測器本體 20突出於感壓部7’的突出量爲直角邊緣8至刃部1側面 爲止的距離以上藉此避免刃部1接觸。再加上，雖然未圖 示，但也可構成爲將感壓部7 ’形成比直角邊緣8至工具 前端爲止的長度還長的長軸筒狀（也可以是圓筒或角筒， 前端設有抵接部1 1 ’）從檢測器本體20中心突出。特別 是，該狀況時，能夠比第5圖、第6圖的構成還能夠讓3： 具推壓在感壓部7 ’的中央附近，因此能夠更精密感測到 推壓。 此外，若能夠極佳精度地將不限於交叉稜線的一部份 而是指定範圍（和感壓部7’接觸的範圍或工具全周圍） 形成和工具軸心成直角的邊緣8時，則感壓部7 ’不必設 有突出部1 1 ’。 另外，本實施例是肩部3形成傾斜面5，但也可如第 7圖所示的另一例形成和工具軸心成直角的面4。不過， 於該狀況時，若要獲得精密的基準位置檢測，則相較於形 成傾斜面5的狀況，該狀況是需要極高精度的直角平面加 工。 此外，於形成有直角面4的狀況，例如調刃具9是採 用如第8圖所示形成爲凹設有刃部1調整用凹部1〇的平 面方向大致C字狀體，上面設有和上述直角面4 一點抵接 的大致半球狀抵接部1 1之調刃具。其位置檢測方法等是 和本實施例相同。另，於該狀況時也是和本實施例的狀況 相同，如第9圖、第10圖所示，可採用直接利用直角面 -15- 200906537 4推壓感壓部7，的接觸式位置檢測器6 ’ 軸筒狀感壓部7 ’的接觸式位置檢測器6 佳精度地將柄部2或突部的前端面指 7’接觸的範圍或工具全周圍）形成和工 4時，則感壓部7 ’不必設有突出部1 1 ’ ° 本實施例由於是構成如以上所述’ 主軸的工具基準位置進行檢測時’可利 或透過調刃具9間接推壓接觸式位置檢 進行檢測，因此工具前端不需接觸於接 即能夠讓工具前端不受破損地進行基準 容易折損的極小徑旋轉切削工具還是可 測器以便宜成本進行精密的基準位置檢 因此，本實施例就是一種工具前端 位置檢測器就能夠檢測出基準位置，即 削工具還是可使用接觸式位置檢測器以 的基準位置檢測之實用性佳的旋轉切削 方法。 【圖式簡單說明】 第1圖爲工具基準位置檢測方法的 第2圖爲本實施例的槪略說明側面 第3圖爲本實施例調刃具的槪略說 第4圖爲柄部前端設有錐形部的工 第5圖爲表示本實施例相關的接觸 ’或可採用具有長 1。另外，若能夠極 定範圍（和感壓部 具軸心成直角的面 在對安裝在切削機 用直角邊緣8直接 測器6的感壓部7 觸式位置檢測器6 位置檢測，即使是 使用接觸式位置檢 測。 不需接觸於接觸式 使是極小徑旋轉切 便宜成本進行精密 工具及基準位檢測 槪略說明側面圖。 圖。 明透視圖。 具槪略說明圖。 式位置檢測器的一 -16- 200906537 例槪略說明圖。 第6圖爲表示本實施例相關的接觸式位置檢測器的一 例槪略說明圖。 第7圖爲另一例的槪略說明側面圖。 第8圖爲另一例調刃具的槪略說明透視圖。 第9圖爲表示另一例相關的接觸式位置檢測器的一例 槪略說明圖。 第1 〇圖爲表示另一例相關的接觸式位置檢測器的一 例槪略說明圖。 【主要元件符號說明】 1 :刃部 2 :柄部 4 :直角面 5 :傾斜面 6 :接觸式位置檢測器 7 :感壓部 9 :調刃具 1 〇 :凹部 1 1 :抵接部 1 9 :工件表面 -17-200906537 IX. Description of the Invention [Technical Field] The present invention relates to a rotary cutting tool and a reference position detecting method. [Prior Art] As shown in Fig. 1, the spindle of the cutting machine (rotary machining machine) is mounted with a rotary cutting tool B such as an end mill or a drill through the clamp A, and is placed on the table by the tool B. When the workpiece C on the surface F is subjected to cutting, the machining program is generally cut based on the position of the upper surface of the workpiece C. Therefore, it is important to accurately grasp the relative distance between the position of the upper surface of the workpiece C and the position of the front end of the tool B mounted on the spindle, which is reflected in the machining program for high-precision machining. In addition, the first figure shows a vertical type cutting machine, but it is also an important matter for a horizontal type cutting machine. Specifically, the tool shaft direction coordinate when the tip of the tool B (tool B in the non-rotation stop state) is in contact with the workpiece C is mounted on the cutting machine spindle as the reference position (defect point). In this case, when the tip end of the tool B and the workpiece C are simply in contact with each other, the cutting edge provided at the tip end of the tool is fragmented, or if it is the small-diameter tool B, the possibility of breakage is high. Therefore, a dedicated contact position detector D of a previously known size (the height of the bottom surface to the top surface) is provided on the workpiece C, and the position above the workpiece C (reference position) is calculated by subtracting the known size of the contact position detector D. . The contact position detector D, for example, disclosed in Patent Document 1, has a pressure sensitive portion E that can be protruded from the detector body, and the pressure sensitive portion E is configured to be pushed toward the tool side by a suitable spring member, and the general configuration is In the above-described sense -5, 2009,065, the pressing portion E is pressed against the elastic force of the above-described projectile member to form a retraction, and the retraction of E is detected to thereby sense the pushing of the tool through the report. Further, there is also a non-contact type position detecting device which uses a laser or a C C D camera disclosed in Patent Document 2 without using the above-described contact type position detector. In addition, there are cases in which the non-contact device is incorporated into a cutting machine for use. However, the non-contact position detector is expensive, the system of use, and the diameter of the detection target is also limited, and the like. In addition, the non-contact position detector, for example, the state in which the cutting oil is attached to the front end of the tool is In general, it is not uncommon to see the cutting error when performing position detection. However, in this case, in the case of a contact position detector, the influence of the cutting oil on the positional accuracy of the tool tip is not large. In general, the 'contact position detector' is simple in construction and adaptable to environmental conditions. It has no damage to the cutting edge of the tool during position detection. As long as it is acceptable in the acceptable tolerance measurement object, it is actually the majority. Still a position detector. [Patent Document 1] JP-A-2006-62061 (Patent Document 2) JP-A-2001-328049 No. 4 [Disclosed] The problem of the invention is to illuminate the pressure sensitive portion, for example, a position is used. The detected position detection environment has poor limits. Position detection for the processing environment and the amount of oil to be cut, even if the attachment price is cheap or not, the circumference can be used, check the contact type report> -6-200906537 However, when using the contact position detector, especially at the outer diameter When a very small diameter tool of 0.1 mm or less is used, it is easy to cause tool breakage or fragmentation when the tool is in contact with the detector, and the possibility of losing the function is high. The present invention is directed to the above-described actual situation, in which a tool tip does not need to be in contact with a contact type position detector, and a right-angled or inclined surface of a shank or the like other than the blade portion is pressed against the outer edge of the tool. The pressure sensitive portion of the position detector can be detected, and even a very small diameter drill can be used as a practically excellent cutting tool and reference position detecting method for performing precise reference position detection at a low cost using a contact type. [Means for Solving the Problem] Next, the gist of the present invention will be described with reference to the drawings. A rotary cutting tool according to the present invention is a rotary cutting tool having a front end portion 1 and a base end side having a shank portion 2, wherein the shank portion 2 is protruded from a protrusion provided on the shank portion 2 Further, the rotary cutting tool according to the first aspect of the present invention is characterized in that the rotary cutting tool according to the first aspect of the present invention is characterized in that the blade is located at the blade portion as viewed from the front end of the tool. Radial outer side of 1. Further, in the rotary cutting tool according to the second aspect of the invention, the rotary cutting tool according to the invention is characterized in that, before the end face before the end portion 2 or the projection is used, the blade contact position is used. The purpose of the tool is to use the position of the intersection of the set surface of the detector. The rotary side of the detector has a blade mark, and the edge of the blade is 1 4 〇 patent range right angle surface 4 patent range right angle surface 4 position 200906537 The rotary cutting tool of the invention is characterized in that the outer diameter of the blade is 0.1 mm or less. Further, the rotary cutting tool according to the present invention is a rotary cutting tool having a blade portion 1 on the front end side and a shank portion 2 on the proximal end side, and is characterized in that the shank portion 2 is protruded from the shank portion 2 or The projection provided with the blade portion 1 is provided with an inclined surface 5 which is inclined downward toward the tool base end side toward the tool center side. Further, the rotary cutting tool according to the fifth aspect of the invention is characterized in that the inclined surface 5' is located radially outward of the blade portion 1 as viewed from the front end of the tool. Further, the rotary cutting tool according to the sixth aspect of the invention is characterized in that the inclined surface 5 is provided at a position close to the outer periphery of the front end portion of the shank portion 2 or the projection portion. Further, the rotary cutting tool according to the seventh aspect of the invention is characterized in that the outer diameter of the blade portion is 〇 1 mm or less. In addition, the reference position detecting method related to the present invention is a method in which a workpiece surface 19 or a surface having a relative distance from the workpiece surface 19 is used as a reference surface, and a rotating cutting tool is sensed on the top surface and the top portion is sensed. The contact position detector 6 of the pressure sensitive portion 7 that is pressed is a relative distance between the tip end of the rotary cutting tool described in any one of the first to fourth aspects of the patent processing range of the rotary machining machine spindle and the reference surface. The reference position detecting method for measuring the reference position by the test -8-200906537 is characterized in that the pressure sensitive portion 7 is provided with the adjustment tool 9 provided with the concave portion 1 for adjusting the blade portion 1 The abutting portion 1 for abutting against the right-angled surface 4 detects the reference position by the pressing of the right-angled surface 4 by the abutting portion 11 of the blade 9. In addition, the reference position detecting method related to the present invention is a reference surface having a workpiece surface 19 or a relative distance from the workpiece surface 19 as a reference surface, and the top surface of the reference surface is sensed by the rotary cutting tool. The contact position detector 6 of the pressure sensitive portion 7 presses the relative distance between the tip end of the rotary cutting tool described in any one of the fifth to eighth aspects of the rotary machining machine spindle and the reference surface. The reference position detecting method for detecting the reference position is characterized in that the pressure sensitive portion 7 is placed on the pressure sensitive portion 7, and the cutting tool 9 includes the concave portion 1 for adjusting the blade portion 1 and the inclined surface 5 The abutting portion 1 for abutting against the intersecting ridge line of the peripheral surface of the tool detects the reference position by the pressing of the intersecting ridge by the abutting portion 1 1 of the blade 9. In addition, the reference position detecting method according to the present invention is a reference surface having a surface of the workpiece 19 or a relative distance from the surface of the workpiece as a reference surface, and the top surface of the reference surface is sensed by the rotary cutting. The contact position detector 6 of the pressure sensitive portion 7 that is pressed by the tool is opposite to the front end of the rotary cutting tool described in any one of the first to fourth aspects of the patent processing range of the rotary machining machine spindle. A reference position detecting method for detecting a reference position by measuring the distance, wherein the pressure sensitive portion 7 is directly pressed by the right angle surface 4 to detect the reference position -9-200906537. Further, the standard related to the present invention The position detecting method is a pressure sensing portion which is a surface of the workpiece surface 19 or a relative distance from the workpiece surface 19, and has a pressure sensing portion which is placed on the reference surface and the top portion can sense the pressing of the rotary cutting tool. The contact position detector of 7 is the front end of the rotary cutting tool described in any one of the fifth to eighth aspects of the patent application of the rotary machining machine spindle, and the reference The reference position detecting method for detecting the reference position by detecting the relative distance of the surface is characterized in that the pressure sensitive portion 7 receives the direct pressing of the intersecting ridge line between the inclined surface 5 and the tool peripheral surface to detect the reference position . [Effect of the Invention] Since the present invention has the above configuration, it is possible to detect the reference position without contacting the tip end of the tool to the contact position detector, and it is possible to use the contact type even for the extremely small diameter rotary cutting tool. The position detector is a highly practical rotary cutting tool and a reference position detecting method for performing precise reference position detection at a low cost. [Embodiment] BEST MODE FOR CARRYING OUT THE INVENTION Next, a preferred embodiment of the action of the present invention will be briefly described based on the drawings. When the reference position is detected by the tool attached to the spindle of the cutting machine, the pressure sensitive portion 7 of the contact position detector 6 receives the right angle surface 4 provided by the shank portion 2 other than the blade -10,065,065,37 Or the direct or indirect pressing of the intersecting ridges of the inclined surface 5 and the peripheral surface of the tool can perform the detection, so that the front end of the tool does not contact the contact position detector 6, that is, the reference position detection can be performed without damage to the front end of the tool. Even the extremely small-diameter rotary cutting tool that is easily broken can obtain accurate and inexpensive reference position detection. [Embodiment] Hereinafter, a specific embodiment of the present invention will be described based on the drawings. The present embodiment is a rotary cutting tool having a blade portion 1 on the front end side and a shank portion 2 on the base end side, and is configured such that the shank portion 2 is provided with a diameter larger than the blade portion and closer to the tool center side. The inclined surface 5 which is inclined downward at the base end side is provided with an edge 8 which is at right angles to the axis of rotation of the above tool at the intersecting ridge line of the inclined surface 5 and the peripheral surface of the tool. Next, each component will be specifically described. The blade portion 1 is formed continuously with the shank portion 2 which is larger than the diameter of the blade portion 1, and the shank portion 2 is a tool holder 14 which is held by the jig barrel 15 and held on the cutter main shaft, and the blade portion 1 and The step portion (the front end surface of the shank portion 2) of the connecting portion of the shank portion 2 is set as the shoulder portion 3, and the inclined portion 5 is provided on the shoulder portion 3. Further, as the tool, a solid tool in which the blade portion 1 and the shank portion 2 are integrated may be employed, and a tool formed by combining the blade portion 1 and the shank portion 2 by brazing or the like may be employed. Further, the blade portion 1 may be provided in a projection such as a plurality of tapered portions or cylindrical portions that are protruded from the shank portion 2, and a projection (a front end surface) such as the tapered portion or the cylindrical portion may be formed. The inclined surface 5 or the right-angled surface 4 ° -11 - 200906537 The inclined surface 5 provided on the shoulder 3 is disposed on the radially outer side of the blade portion 1 as seen from the front end of the tool, and is disposed to abut against the general contact position The pressure sensitive portion 7 of the detector 6. Specifically, as shown in Fig. 2, the inclined surface 5 is provided in a substantially meander shape so as to be inclined downward from the outermost peripheral position of the shoulder portion 3 toward the base portion of the blade portion 1 over the front end surface of the shoulder portion 3. Further, the inclined surface 5 is formed by honing the shoulder portion 3 via a suitable grindstone (diameter 70 mm to 200 mm) to form an R shape due to the radius of the grindstone. Further, at the intersection ridge line of the inclined surface 5 and the tool peripheral surface (the peripheral surface 16 of the shank 2), an edge 8 at right angles to the tool core is provided. Further, the peripheral surface of the tool which forms the intersecting ridge line with the inclined surface 5 is not limited to the peripheral surface 16 of the handle 2, as shown in Fig. 4, when the front end portion of the handle 2 is provided with a cone as a projection At the time of the shape of the portion, the peripheral surface of the tool forming the intersecting ridge line with the inclined surface 5 may be the peripheral surface of the tapered portion 17. In other words, the inclined surface 5 is configured to form the right angled edge 8 at the intersecting ridge line with the peripheral surface 16 of the shank portion 2, and the right angled edge 8 can be abutted against the pressure sensitive portion 7 of the contact position detector 6. The shoulder portion 3 is a configuration on the most distal end side, and may be any shape such as the inclined surface 5 so as not to be provided over the entire front end surface of the shoulder portion 3 as long as a portion is provided. Further, a portion where the length of the cross ridge line to the front end of the tool has been previously measured (right angle edge 8) is set in a portion of the intersecting ridge line, and a mark 18 is provided on the shank portion 2 in order to easily distinguish the portion. In the present embodiment, for simplification of the description, the configuration is as described above, but as long as the distance from the front end of the tool to the intersecting ridge line is previously specified in a portion of the intersecting ridge line -12-200906537, It is not necessary to provide the right-angled edge 8 (it may be configured to press the pressure-sensitive portion 7 described below by a portion of the intersecting ridge line of the inclined surface 5 and the peripheral surface of the tool that is not orthogonal to the tool axis). Therefore, by pressing the pressure sensitive portion 7 of the contact position detector 6 by the above-described intersecting ridge line (right angle edge 8), the reference position of the tool can be detected without abutting the tip end of the tool against the contact position detector 6, even if It is a rotary cutting tool in which the outer diameter (tool diameter) of the blade portion is 0.1 mm or less, and the reference position detection of the contact position detector 6 which is easy and good can be obtained. Further, even a tool having an outer diameter (tool diameter) of the blade portion exceeding 〇1 mm, that is, a rotary cutting tool which is elongated in the tool axis direction (large in aspect ratio) and which is easily disposed at the tip end of the tool is provided for the projection having the blade portion. A rotary cutting tool having a low cutting edge strength and easy to generate a fragment can also obtain a reference position detection of the easy and good contact position detector 6. In the tool B shown in Fig. 1, when the tip end of the shank is provided with a tapered portion or the like, but the inclined surface 5 or the right-angled surface 4 is not provided, the pressure-sensitive portion 7 cannot be pressed by the tapered portion. Perform precise reference position detection. Specifically, the reference position is detected using, for example, the cutting tool 9 shown in Fig. 3. The blade 9 is a substantially C-shaped body in the plane direction in which the blade portion 丨 adjusting recess 1 凹 is formed, and a triangular columnar abutting portion 11 which is in contact with the intersecting ridge line (right angle 8) is provided on the upper surface. Further, the height of the blade 9 is at least set to be equal to or longer than the length of the cross ridge (right angle edge 8) to the front end of the tool. Further, the blade 9 is not limited to a substantially C-shaped cross section, and may be a cylindrical shape or a rectangular tube shape. -13- 200906537 Therefore, the contact position detector 6 which is generally sold on the market is placed on the surface of the workpiece 1, and then the blade 9 is placed on the pressure sensing portion 7 of the contact position detector 6, and the blade is being processed. The portion 1 is located in the concave portion 10 with the intersecting ridge line of the inclined surface 5 and the peripheral surface 16 such that the right-angled edge 8 can be in contact with the front end ridge line of the abutting portion 1 1 , and the lowering tool [2 (a) - 2nd) (b) In this way, the pressure sensitive portion 7 can be pushed through the blade 8 by the right angle edge 8 without contacting the tip end of the tool. Next, the position of the right angle edge 8 obtained by the pressing of the pressure sensing portion 7 is subtracted, the height dimension of the contact position detector 6 and the height dimension of the blade 9 are subtracted, and then the front end of the tool is added to the right edge 8 The length, by which the reference position (workpiece surface position) can be calculated. Further, if there is another surface having a known relative distance from the workpiece surface 19 (for example, the table surface F of Fig. 1), the contact position detector 6 is placed on the surface, and then the same number of bits are detected as described above. The reference position (work surface position) can be calculated by adding or subtracting the relative distance of the workpiece surface 19, which is advantageous when, for example, the surface area of the workpiece is small and it is difficult to mount the contact position detector 6. In addition, the contact position detector 6'' which can be directly pressed by the right-angled edge 8 can be used, and the front end of the tool (the blade 1) can be adopted when the right-angled edge 8 and the pressure-sensitive portion 7' are brought into contact. The contact position detector 6' does not interfere with the detector body 20, and the pressure sensing portion 7' is directly pressed by the right angle edge 8 to perform the reference position detection. For example, as shown in Fig. 5, 'the pressure sensitive portion 7' is configured such that the above-described cutting tool 9 and the pressure sensitive portion 7 are integrated, or as shown in Fig. 6, the configuration is such that the pressure sensitive portion 7' is provided with -14 - 200906537 At the same time as the above-mentioned abutting portion 11', the detector body 20 in the planar direction protrudes from the pressure sensing portion 7' by a distance from the right angle edge 8 to the side surface of the blade portion 1, thereby avoiding the blade portion 1 contact. Further, although not shown, the pressure sensitive portion 7' may be formed in a long cylindrical shape that is longer than the length from the right angle edge 8 to the tool tip end (may be a cylinder or a corner cylinder, and the front end is provided. The abutting portion 1 1 ') protrudes from the center of the detector body 20. In particular, in this case, it is possible to push the 3: member closer to the center of the pressure sensitive portion 7' than the configuration of Fig. 5 and Fig. 6, so that the pressing can be more accurately sensed. Further, if it is possible to accurately limit the portion not limited to the intersecting ridge line but the specified range (the range in contact with the pressure sensitive portion 7' or the entire circumference of the tool) to form the edge 8 at right angles to the tool axis, The pressing portion 7' does not have to be provided with the projection 1 1 '. Further, in the present embodiment, the shoulder portion 3 is formed with the inclined surface 5, but another surface as shown in Fig. 7 may be formed to form the surface 4 at right angles to the tool axis. However, in this case, in order to obtain a precise reference position detection, this condition requires a very high-precision right-angle plane machining as compared with the case where the inclined surface 5 is formed. Further, in the case where the right-angled surface 4 is formed, for example, the edge-adjusting tool 9 is formed in a substantially C-shaped plane in the plane direction in which the blade portion 1 adjusting concave portion 1 is formed as shown in Fig. 8, and the upper surface is provided with the above-mentioned The substantially hemispherical abutting portion 1 1 of the right-angled surface 4 abuts. The position detecting method and the like are the same as in the present embodiment. In addition, in this case, it is also the same as the state of the present embodiment. As shown in FIG. 9 and FIG. 10, the contact position detector that directly presses the pressure sensing portion 7 using the right-angled surface -15-200906537 4 can be used. 6' The contact position detector 6 of the cylindrical tubular pressure sensing portion 7' is sensitively formed when the shank portion 2 or the front end surface of the projection portion 7' is in contact with the entire circumference of the tool. The portion 7' does not need to be provided with the protrusion 1 1 '°. In this embodiment, since it is configured to detect the position of the tool reference position of the spindle as described above, it can be detected by indirect pushing of the contact position detection by the blade 9 The tool can be used to detect the front end of the tool at a low cost without the need to touch the front end of the tool, so that the front end of the tool can be easily damaged without damage. The tool can detect the reference position, that is, the cutting tool is also a practical rotary cutting method that can detect the reference position using the contact position detector. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic view of a tool reference position detecting method. FIG. 3 is a schematic view of the embodiment. FIG. 3 is a schematic view of the cutting tool of the present embodiment. FIG. 4 is a front end of the handle. Fig. 5 of the tapered portion is a view showing that the contact associated with the present embodiment can have a length of one. In addition, it is possible to detect the position of the touch position detector 6 of the pressure sensitive portion 7 of the direct measuring device 6 mounted on the right angle edge 8 of the cutting machine, even if it is used. Contact position detection. No need to contact the contact type, it is a very small diameter rotation cut. It is cheaper to carry out precision tools and reference position detection. A side view is shown. Fig. Bright perspective view. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 6 is a schematic explanatory view showing an example of a contact position detector according to the present embodiment. Fig. 7 is a schematic side view showing another example. Fig. 8 is another BRIEF DESCRIPTION OF THE DRAWINGS Fig. 9 is a schematic explanatory view showing an example of another related contact position detector. Fig. 1 is a schematic diagram showing another example of a related contact position detector. Explanation: [Description of main component symbols] 1 : Blade 2 : Handle 4 : Right angle 5 : Inclined surface 6 : Contact position detector 7 : Pressure sensitive part 9 : Adjusting tool 1 〇 : Concave part 1 1 : Abutting Part 1 9 : Workpiece Table -17-