1301434 九、發明說明： 【發明所屬之技術領域】 免明係有關於一種刀具狀 吕之’係有關一種應用於檢測針對= 置及方法，更旬 刀具磨耗或斷刀鱼否之n目作物進仃切削作業之 【先前技術】 具狀態檢㈣置及方法。 使用自動化加工機具進行加 戸 刀具狀態以確保產品品質， 乍必須即時伯測 1例，係藉由高速非接觸式氣靜:==L作業為 ΐ運=:! 、準等高性能表現，然而鑽針於高 二運：下亦會產生磨耗甚至斷刀，而為 =:?形下及時發現並加以更換，以往係於非接觸 底抑對鑽針頭端附近加設感測設備，當鑽針狀態 二吊二則將訊息回傳至相關控制非接觸式馬達之控制 為’以停機更換鑽針。目前㈣鑽針運轉中之狀態有光線 遮斷法兔刷接觸法、粉塵碎屑蒐集法、電壓訊號法、以 及驅動電流法等偵測方法。 光線遮斷法係於鑽針之兩侧設置投射以及接收光的 衣置’根據光線接收端接收光訊號之有無來判斷鑽針的狀 恶’然而於鑽針直徑越來越小的趨勢下，欲使光訊號正確 地被鑽針所阻斷所要的設置精度要求也越高，因此使得光 線遮斷法有越來越難以實施的趨勢，即使裝置架設成功也 耗費了相當多的時間以及甚高之成本。 碳刷接觸偵測法是將碳刷與鑽針直接接觸，根據碳刷 5 19854 •1301434 傳回訊號之有無來判斷鑽針之狀態，然而於非接觸式馬達 高速運轉下，鑽針會因接觸到碳刷而快速磨耗，且於摩擦 過程中產生的粉塵以及碎屑亦會傷害非接觸式馬達之轉 子0 粉塵碎屑偵測法係於碳刷與鑽針對加工物件加工 時，將產生的粉塵以及碎屑以集塵器加以蒐集，再根據集 塵器内的粉塵及碎屑感測器訊號來偵測鑽針之狀態，然而 粉塵蒐集量卻有難以拿捏之困擾，且粉塵中含多少比例以 籲上的鑽針成分方刊定鑽針已受損之標準亦難以制定，因 此使得粉塵碎屑偵測法難以應用於實際操作上。 ,驅動電流偵測法是在主軸驅動器的電流輸出線安裝 電流感測器，再根據鑽針於加工時因扭力而產生的電流纖 化，來偵測鑽針之狀態。 /；，L ^ 電堅訊號備測法是在加工物件與機台間建立電位 差，藉由鑽針貫穿上層加工物件 值墓* 初仟之動作，將上層電壓訊费 “至下層，電腦控制器再根據電 4 測鑽針的狀態。 疋货得遞，來4 惟驅動電流偵测法以及㈣訊號偵測法均必須壯 感測器，而增加整體鑽孔機之成本，並且難以適用在二 且微=作之業”因此亦造成應用範圍之限: 高度稱為非加工行：:工打加工動作前離開工作物之 比’因此各式之鑽孔機均著重於 ”鑽孔連度呈反 孔速度，然而上述之光線避去’、、 ϋ工仃程以提升鑽 ㈣斷法、碳刷接觸法、粉塵碎屬 19854 1301434 ^ l »集法、電壓訊號法、或驅動電流 附，測裝置或感測元件，經常會因此而增加非= 仃程，進而影響鑽孔速度。 因此’如何改善m種種缺點，為當今聽思考之 題。 个 【發明内容】 θ鑒於以上所述習知技術之缺點，本發明之-目的在於 •提t、種刀具狀悲檢测裝置及方法，毋須於該刀具周圍辦 設偵測裝置，俾可具有最小之加工行程。 曰 、本發明之次-目的為提供—種刀具狀態檢測裝置及 方法’俾明確地判斷出刀具之磨耗或斷刀狀態。 ▲本u之再-目的為提供—種可節省成本之刀具狀 態檢測裝置及方法。 、 本么月之X目的為提供一種無須接觸磨損刀具之 刀具狀態檢測裝置及方法。 為達上揭及其他目的，本發明提供一種刀具狀態檢測 衣置，係應用於檢測針對工作物進行加工作業之刀具狀 態’該工作物係設置於一加工機台上，該刀具係由主軸馬 達之中心轉子帶動旋轉，而該主軸馬達之中心轉子係與該 主軸馬達之外殼保持絕緣。該刀具狀態檢測裝置包括：電 %讯號產生器，用以施加電場訊號於該主軸馬達之外殼， ^吏該外殼與該中心轉子間產生感應電場；電場訊號處理 器，用以接收來自該主軸馬達之外殼的感應電場之訊號， 19854 7 1301434 並根據該感應電場之訊號之狀態而輸出相對訊號；以及控 制器’耗合至該電場訊號處理器且根據該相對訊號以判讀 該感應電場之存在與否，當該感應電場因刀具接觸工作物 並經該加工機台接地而使該感應電場之訊號消失時，視為 未斷刀狀態；當該感應電場之訊號持續存在時，則視為斷 刀狀態。 本發明亦揭示-種刀具狀態檢測方法，係應用於檢測 針對工作物進行加工作業之刀具狀態，該工作物係設置於 一加工機台上，該刀具係由主軸馬達之中心 ，，而該主軸馬達之巾^轉子係與該主軸馬達之外殼保持 絕緣，該方法包括：施加電場訊號於該主轴馬達之外殼， 以使該外殼與該中心轉子間產生感應電場；令該主轴^ 帶動該刀具以對工作物進行加工作業;以及於加工作業： 债測轉感應電場之存在與否，當該感應電場因刀具接觸工 作物並經該加工機台接地而使訊號消失時，視為未斷刀狀 態’·當該感應電場之訊號持續存在時，則視為斷刀狀能。 就應用於鑽孔作業為例，該刀具係為一鑽針，相較於 省知技術中各種關於侦測鑽針使用狀態之方法會造成增、 加非加工行程而降低鑽孔速度，本發明之曰 之時，谓測該電場訊號之有無，以判斷鑽針 鑽針週遭設置刪測裝置，因此，相較 J 付可有政地縮短非加工行程而加快鑽孔連 實際測試中，㈣請之崎度。鑽孔速度，於 19854 8 1301434 省 » 且，相較於習知技術中以碳刷接觸偵測法容易導致鑽 針快速磨耗而受損之缺失，本發明之刀具狀態檢測 須以任何結構接觸到鑽針而避免增加鑽針磨耗的速度。 —又’相較於習知技術中以粉塵荒集法有鑽針狀態^法 ^定之疑慮，本發明之刀具狀態檢測方法，以電場訊號的 有無即可明確判斷出鑽針之狀態。 再者，相較於習知技術各式偵測鑽針狀態之方法，例 如以^阻斷偵測之方法所要求之精度甚高、粉塵蒐集法有 粉塵策，量難以拿捏之缺點，均會導致偵測鑽針狀態所需 之成本提高；纟發明之刀具狀態檢測方法只須通電使該主 軸馬達之巾心轉子帶正電荷，而使該外殼感應帶負電荷， 再將該外殼電性導接於該加卫機台上即可，毋須精密的設 置精度，亦不須荒集副產品，而可以節省成本之方式，精 確地測出該鑽針之狀態。 、 另外，並可量測出每次鑽針接觸到工作物之時間，當 #發現鑽針接觸該工作物所需時間偏離正常値較多時，代: 鑽針所受之磨耗過大，亦可於此時主動更換鑽針。 【實施方式】 以下係藉由特定的具體實施例說明本發明之實施方 式’所屬技術領域中具有通常知識者可由本說明書所揭示 之内谷輕易地瞭解本發明之其他優點與功效。 U ' ' 請夢閱S 1圖至第3圖，係本發明刀具狀態檢測裝置 及方法之具體實施例，於本實施例中係以應用於鑽孔作業 為例，因此係以鑽針代表刀具，惟所屬技術領域中具有通 19854 9 13014341301434 IX. Description of the invention: [Technical field to which the invention belongs] The illuminating system is related to a kind of tool-like Lu's system, which is used to detect the application of the method, and the method of cutting and cutting the fish. [Prior Art] for cutting operations With condition check (4) and method. The use of automated processing tools for the state of the twisted tool to ensure product quality, 乍 must be a case of real-time test, by high-speed non-contact air static: == L operation for the luck =:!, quasi-high performance, but drill The needle is used in the second high: the wear will be broken or even broken, and it will be found and replaced in time for the =:? shape. In the past, the non-contact bottom was added to the vicinity of the drill needle. Hang 2 will return the message to the relevant control of the non-contact motor control to 'replace the drill with a stop. At present, (4) the state in which the bur is in operation is detected by a light intercepting method, a rabbit brush contact method, a dust debris collecting method, a voltage signal method, and a driving current method. The light interception method is to set the projection and receive the light on both sides of the drill needle. 'According to the presence or absence of the light signal received by the light receiving end to judge the shape of the drill needle', however, under the trend that the diameter of the drill needle is getting smaller and smaller, The higher the setting accuracy required for the optical signal to be properly blocked by the drill, the light occlusion method has become more and more difficult to implement, even if the device is successfully installed, it takes a considerable amount of time and very high. The cost. The carbon brush contact detection method directly contacts the carbon brush with the drill needle, and judges the state of the drill needle according to whether the carbon brush 5 19854 • 1301434 returns the signal. However, when the non-contact motor runs at a high speed, the drill needle may be contacted. Fast wear to the carbon brush, and the dust and debris generated during the rubbing process will also damage the rotor of the non-contact motor. The dust debris detection method is the dust generated when the carbon brush and the drill are processed for the processed object. And the debris is collected by the dust collector, and the state of the drill needle is detected according to the dust and debris sensor signal in the dust collector. However, the dust collection amount is difficult to handle, and the proportion of the dust is included. It is difficult to formulate the standard that the drill needle has been damaged by the stylus component of the appeal, so that the dust debris detection method is difficult to apply to practical operation. The driving current detection method is to install a current sensor on the current output line of the spindle driver, and then to detect the state of the drill pin according to the current strain generated by the torque when the drill is processed. /;, L ^ Electric signal preparation method is to establish a potential difference between the workpiece and the machine, through the needle through the upper layer of the workpiece value tomb * initial action, the upper layer of the signal to the lower level, the computer controller According to the electric 4, the status of the drill is measured. The delivery of the goods, the 4 drive current detection method and the (4) signal detection method must all be strong sensors, and increase the cost of the overall drilling machine, and it is difficult to apply in the second And micro = work industry" therefore also caused by the scope of application: Height is called non-processing line:: the ratio of work leaving the work before the work is processed 'so each type of drilling machine is focused on the "drilling continuity" Anti-hole speed, however, the above-mentioned light avoids ',, the completion process to improve the drill (four) breaking method, the carbon brush contact method, the dust genus 19854 1301434 ^ l » method, voltage signal method, or drive current attachment, measurement Devices or sensing components often increase the non-ratio, which in turn affects the drilling speed. Therefore, 'how to improve m kinds of shortcomings, for today's listening problems. 】 【Invention θ in view of the above-mentioned conventional technology Disadvantages of the present invention - In the case of t, the tool-like sorrow detection device and method, it is not necessary to set up a detection device around the tool, and the process can be minimized. 曰, the present invention is the second purpose of providing a tool state detection The device and method '俾 clearly determine the wear or broken state of the tool. ▲This re-purpose is to provide a tool state detection device and method that can save cost. The purpose of this month is to provide a kind of unnecessary Tool state detecting device and method for contacting a worn tool. The present invention provides a tool state detecting device for detecting a tool state for a workpiece for processing work. On the processing machine, the tool is rotated by a central rotor of the spindle motor, and the central rotor of the spindle motor is insulated from the outer casing of the spindle motor. The tool state detecting device comprises: an electric signal generator for Applying an electric field signal to the outer casing of the spindle motor, and generating an induced electric field between the outer casing and the central rotor; an electric field signal processor, Receiving a signal of an induced electric field from the outer casing of the spindle motor, 19854 7 1301434, and outputting a relative signal according to the state of the signal of the induced electric field; and the controller is consuming the electric field signal processor and interpreting the signal according to the relative signal The presence or absence of the induced electric field is regarded as an unbroken state when the induced electric field causes the signal of the induced electric field to disappear due to the tool contacting the workpiece and being grounded through the processing machine; when the signal of the induced electric field persists The present invention also discloses a tool cutting state method. The invention also discloses a tool state detecting method, which is applied to detecting a tool state for a workpiece to be processed, and the working object is disposed on a processing machine, the tool is driven by a spindle. a center of the motor, wherein the rotor of the spindle motor is insulated from the outer casing of the spindle motor, the method comprising: applying an electric field signal to the outer casing of the spindle motor to generate an induced electric field between the outer casing and the central rotor; Let the spindle ^ drive the tool to process the workpiece; and in the processing operation: the debt measurement and the induced electric field Whether or not the induced electric field is regarded as an unbroken state when the signal is lost due to the tool contacting the workpiece and being grounded through the processing machine'. When the signal of the induced electric field persists, it is regarded as a broken knife shape. can. For example, in the case of a drilling operation, the tool is a drill needle, which reduces the drilling speed by increasing and adding a non-machining stroke compared to various methods in the prior art for detecting the state of use of the drill needle. At the time of the test, it is said that the presence or absence of the electric field signal is determined to determine the setting of the boring needle around the burr. Therefore, compared with J, the non-machining stroke can be shortened and the drilling is accelerated. In the actual test, (4) The degree of the bar. Drilling speed, in the case of the prior art, the carbon brush contact detection method is likely to cause the rapid wear of the drill pin and the damage is impaired. The tool state detection of the present invention must be contacted by any structure. Drill the needle to avoid increasing the speed of the needle wear. - In contrast, in the prior art, the dust state is determined by the dust dusting method. The tool state detecting method of the present invention can clearly determine the state of the drill pin by the presence or absence of the electric field signal. Moreover, compared with the conventional techniques for detecting the state of the drill needle, for example, the precision required by the method of blocking detection is very high, the dust collection method has a dust policy, and the quantity is difficult to handle, and both will be The cost required to detect the state of the drill bit is increased; the invention of the tool state detection method only requires energization to cause the spindle rotor of the spindle motor to be positively charged, and the outer casing is induced to be negatively charged, and then the outer casing is electrically conductive. It can be connected to the support machine without precise setting accuracy, and it is not necessary to waste the by-products, and the cost can be accurately measured to accurately measure the state of the drill. In addition, it can measure the time each time the drill needle touches the work object. When # finds that the time required for the drill needle to contact the work object deviates from normal, the generation: the wear of the drill needle is too large, At this time, the needle is actively replaced. [Embodiment] The following describes the embodiments of the present invention by way of specific embodiments. Those skilled in the art can easily understand other advantages and effects of the present invention from the disclosure of the present disclosure. U ' 'Please take a look at S 1 to 3, which is a specific embodiment of the tool state detecting device and method of the present invention. In this embodiment, it is applied to a drilling operation as an example, and therefore the bur is used to represent the tool. , but in the technical field there is a pass in 19854 9 1301434
4 I 常知識者應均可理解本發明並非僅限於應用在鑽孔作業 中’而所指刀具亦非以鑽針為限。 如第1圖所示，主轴馬達1，係具有中心轉子10以 及環繞該中心轉子10之外殼11，該中心轉子1 〇運轉時， 該主軸馬達1係導入空氣於該中心轉子1 〇及該外殼i i 之間而使該中心轉子10氣浮式地絕緣於該外殼11。 該中心轉子10之一端係外露於該主軸馬達1並夾持 有一鑽針12，該鑽針12係受該中心轉子10之帶動而旋 _轉’以於一工作物2上進行鑽孔，該工作物2可為一印刷 電路板’承載於一加工機台3上。 該外殼11及該加工機台3間係電性連接有一檢測該 鑽針12狀態之刀具狀態檢測裝置4，該刀具狀態檢測裝 置4包括有：用以於該中心轉子1〇及該外殼11間產生感 應電場之電場訊號產生器41、偵測該感應電場之訊號之 狀態而輸出相對訊號之電場訊號處理器42、以及接收由 修電場訊號處理器42所傳來之相對訊號以判斷該感應電場 存在與否之控制器43。 如第2圖所示，當該主軸馬達丨之中心轉子1〇開始 運轉時，該電場訊號產生器41亦同時施加電場訊號於該 外设11使其帶有正電，而由於該中心轉子丨〇絕緣於該外 成11 ’因此该中心轉子1 〇會感應電場而帶有負電，現就 以下芩數加以定義：中心轉子10之第一半徑=a、中心轉 子10中心至該外殼11外表面之第二半徑=b、電場E產生 之處與中心轉子10中心之第三半徑叮，且a<r<b、鑽 19854 10 1301434 針η所帶之第-電荷=+Q、外殼所帶之第二電荷=-q，介 電系數_£、電何密度=几、外殼11與該中心轉子10產生 感應之長度為卜中心轉子之電位K殼4 I It should be understood by those skilled in the art that the invention is not limited to use in drilling operations and that the tool is not limited to the drill. As shown in Fig. 1, the spindle motor 1 has a center rotor 10 and a casing 11 surrounding the center rotor 10. When the center rotor 1 is in operation, the spindle motor 1 introduces air into the center rotor 1 and the casing. The center rotor 10 is air-frozenly insulated from the outer casing 11 between ii. One end of the center rotor 10 is exposed to the spindle motor 1 and is clamped with a drill pin 12, which is driven by the central rotor 10 to be drilled on a workpiece 2. The work object 2 can be carried on a processing machine 3 as a printed circuit board. A tool state detecting device 4 for detecting the state of the drill pin 12 is electrically connected between the outer casing 11 and the processing machine table 3. The tool state detecting device 4 includes: between the center rotor 1 and the outer casing 11 An electric field signal generator 41 for generating an induced electric field, an electric field signal processor 42 for detecting a state of the signal of the induced electric field, and a relative signal transmitted by the electric field signal processor 42 to determine the induced electric field The controller 43 is present or not. As shown in FIG. 2, when the center rotor 1 of the spindle motor turns on, the electric field signal generator 41 simultaneously applies an electric field signal to the peripheral 11 to be positively charged, and since the center rotor 丨The 〇 is insulated from the outer portion 11' so that the central rotor 1 感应 induces an electric field with a negative charge, which is now defined by the following number of turns: the first radius of the central rotor 10 = a, the center of the central rotor 10 to the outer surface of the outer casing 11 The second radius=b, the third radius 叮 where the electric field E is generated and the center of the center rotor 10, and a<r<b, the first charge of the needle η of the 19854 10 1301434 η=+Q, the outer casing The second charge = -q, the dielectric coefficient _£, the electrical density = a few, the length of the outer casing 11 and the central rotor 10 is induced to be the potential of the central rotor K shell
Vb電谷-C。當然，前述之電場訊號產生器41亦可施加 電場訊號於該外殼U使其帶有負f且該中心轉子ι〇會感Vb Electric Valley-C. Of course, the electric field signal generator 41 can also apply an electric field signal to the outer casing U to have a negative f and the central rotor will feel
應電場帶有正電，使鑽針12所帶之第—電荷=_q、而外殼 所帶之第二電荷則=+Q 已知的是a、b、卜ε等參數，而中心轉子1〇與外 殼11間的電位差係Va— Vb= ρ(小办 而又可由私)=έΡ代人前一式 求得中心轉子ίο與外殼π間的電位差 Va_ Vb=^^，其中， — 一 2πεΙ K~Vb 再由電谷公式可求得電容 2πε 口此該主轴馬達因具有相互絕緣之中心轉子1 〇與 外设11’因此形成為一電容裝置。 請配合參閱第3圖，回拄兮士 口冋％該中心轉子10往下移動而 使該鑽針12於該加工物2上隹 初Ζ上進仃鑽孔，當鑽針12處於非 斷刀狀態時，可順利地接觸於該加工物2,而由於該刀且 狀態檢測裝置4係電性連接於該加卫機台3而產生有一ς 地之效應，因此當該鑽針12接觸到加卫物 場與電容C會消失，可據此刺斷德处1π ^ J據此判畊鑽針12為非斷刀狀態。 19854 11 1301434 » » 同時，電場訊號處理器42將輸出一“么a ^ 無感應雷埸，，夕士日 對訊號傳送给控制器43。 之相 然而，當該鑽針12發生折斷之情形時，鑽針益 法觸及工作物2，而使得感應電場盥六 、…、 ~、电谷L保持不轡， ::斷鑽針12之狀態不正常，而必須停機檢修更換。此 才電場訊號處理器42輸出有感應電場，，之相對歸 傳送给控制器43，且控制器43更可進牛 〜 ^ 尺』進一步啟動一告鑿機 制，例如停止該主軸馬達或是發出警報料。 口 另外，即使鑽針12於每-次鑽孔作業中均可觸及該 2物^惟該鑽針12亦有可能已產生磨耗現象而影響 鑽孔品貝，因此可測量每次鑽孔作業中鑽針_及該工 作物2所需之時間，與鐵針12第-次下刀狀態下，觸及 該加工機台3所需之時間相比較，當超過—定的容許值 時，則判定鑽針12已磨耗嚴重而必須更換。 明，閱第4圖，因此，本發明刀具狀態檢測方法可由 籲步驟si οι產生感應電場後，於步驟si〇2讀取該刀具狀態 m置4中之感應電場之訊號，接著啟動該中心轉子 10進订别述之鑽孔作業，並於步驟si〇3偵測感應電場之 訊，存在與否，當—次_孔作業中，持續制到有感應 電％之Λ唬％，代表鑽針12為斷刀狀態，可直接進行到 y驟S106 ’進仃鑽針12之更換，然而當偵測到感應電場 之汛號'肖失時，則進行步驟S1 04，將前述量測鑽針12觸 ^工作物2所需時間與第一次進行鑽孔觸及工作物2所需 $門相咸步驟S1 〇 5則判斷該相减之數值，當低於一額 12 19854 1301434The electric field should be positively charged, so that the first charge of the drill pin 12 is =_q, and the second charge of the outer casing is =+Q. The parameters such as a, b, and b are known, and the center rotor is 1〇. The potential difference between the outer casing 11 and the outer casing 11 is Va - Vb = ρ (small and private) = the previous equation of the generation of the central rotor ίο and the outer casing π Va_ Vb = ^ ^, where, - 2πε Ι K ~ Vb Then, by the electric valley formula, the capacitance 2πε can be obtained. Therefore, the spindle motor is formed as a capacitor device because of the center rotor 1 〇 and the peripheral portion 11' which are insulated from each other. Please refer to Fig. 3, back to the gentleman's mouth 冋%, the center rotor 10 is moved downward, so that the burr 12 is drilled on the workpiece 2, and when the burr 12 is in the non-broken knives In the state, the workpiece 2 can be smoothly contacted, and since the knife and the state detecting device 4 are electrically connected to the reinforcing machine table 3, an effect is generated, so when the drill pin 12 contacts the plus The defensive field and the capacitor C will disappear, and the thorns 12 can be punctured according to this. 19854 11 1301434 » » At the same time, the electric field signal processor 42 will output a "a" no induction thunder, and the evening signal will be transmitted to the controller 43. However, when the bur 12 is broken The drill pin method touches the work object 2, so that the induced electric field 盥6,...,~, electric valley L remains intact, :: the state of the broken drill pin 12 is abnormal, and must be shut down for repair and replacement. The device 42 outputs an induced electric field, and the relative output is transmitted to the controller 43, and the controller 43 can further activate a chiseling mechanism, such as stopping the spindle motor or issuing an alarm material. Even if the drill 12 can touch the two objects in every drilling operation, the drill 12 may have an abrasion phenomenon and affect the drilled product, so that the drill can be measured in each drilling operation. And the time required for the work object 2, compared with the time required for the iron needle 12 to reach the processing machine 3 in the first lower knife state, when the allowable value exceeds the predetermined value, it is determined that the drill needle 12 has The wear is severe and must be replaced. Ming, read Figure 4, therefore, After inventing the tool state detecting method, the sensing electric field can be generated by the step si οι, and the signal of the induced electric field in the tool state m is set to 4 in step si 〇 2, and then the center rotor 10 is started to perform the drilling operation. And in step si〇3, the signal of the induced electric field is detected, whether it exists or not, in the operation of the _ hole, the % of the induction power is continuously generated, and the boring needle 12 is in the state of the broken knife, which can be directly performed. yStep S106 'Replace the boring pin 12, however, when the nickname 'Xiao lost' of the induced electric field is detected, proceed to step S1 04 to measure the time required for the aforementioned measuring bur 12 to touch the work object 2 The value of the subtraction is determined by the step S1 〇 5 required to drill the workpiece 2 at a time, when the value of the subtraction is less than the amount of 12 19854 1301434
* I 又疋值日守’則回到步驟S10 2，而當高於該設定值時’ 則進展至步：S106進行鑽針12檢查或更換。 、相較於習知技術中各種關於偵測鑽針使用狀態之方 法^造成增加非加工行程而降低鑽孔速度，本發明之刀具 T〜、k測方4 ’係於主# .達 < 中心#子及外殼間形成電 场’再於鑽針進行加工時制該電場訊號之有無以判斷刀 狀I ’毋需於鑽針週遭設置相關偵測裝置，因此相較 ;I♦技術可有效地縮短非加工行程而加快鑽孔速度，於 實際測試中，約可加快30%之鑽孔速度。 、 且，相較於習知技術中以碳刷接觸偵測法容易導致鑽 針快速磨耗而受損之缺失，本發明之刀具狀態檢測方法毋 須以任何結構接㈣鑽針㈣免增加料磨耗的速度。 —又相車又於習知技術中以粉塵荒集法有鑽針狀態無法 確定之疑慮，本發明之刀具狀態檢測方法以電場訊號的有 無即可明確判斷出鑽針之狀態。 再者，相較於習知技術各式偵測鑽針狀態之方法，例 如以光阻斷偵測之方法所要求之精度甚高、粉塵策隼法有 粉塵策集量難以拿捏之缺點，均會導致摘測鑽針狀離所需 甚Γ、本發明之刀具狀態檢測方法只須通電使該主 ’、、、之心轉子帶正電荷，而使該外殼帶負電荷，爯 二亥外：電性導接於該加工機台上即可，毋須精密的設置精 二副產品，而可以節省成本之方式精媒地測 出该鑽針之狀態。 另外，並可量測出每次鑽針接觸到工作物之時間，當 19854 13 Ί301434 顧 « 發現鑽針接觸該工作物所需時間偏離正常値較多時，代表 鑽針所文之磨耗已屆臨界值，亦可於此時主動更換鑽針。 由上可知，本發明刀具狀態檢測裝置及方法可改進習 知技術之缺點，並可提早發現鑽針之磨耗，因此具有古产 產業利用價值。 ° 惟以上所述之具體實施例，僅係用以例釋本發 明之特點及功效，而非用以限定本發明之可實施範 彆，在未脫離本發明上揭之精神與技術範疇下，任 ⑩何運用本發明所揭示内容而完成之等效改變及修 飾’均仍應為下述之申請專利範圍所涵蓋。 【圖式簡單說明】 第1圖係顯示本發明刀具狀態檢測裝置之示意圖； 第2圖係顯示本發明刀具狀態檢測裝置中，主軸馬 達之中心轉子與外殼產生感應電場之示意圖； 第3圖係顯示本發明刀具狀態檢測裝置，當鑽針接 鲁觸到工作物時之示意圖；以及 【主要元件符號說明】 1 主轴馬達 10 中心轉子 11 外殼 12 鑽針 2 工作物 3 加工機台 第4圖係顯示本發明刀具狀態檢測方法之流程圖。 19854 14 1301434 i * 4 刀具狀態檢測裝置 41 電場訊號產生器 42 電場訊號處理器 43 控制器 a 第一半徑 b 第二半徑 r 第三半徑 + Q 第一電荷 • —Q 第二電荷 1 長度 5101 步驟 5102 步驟 5103 步驟 5104 步驟 5105 步驟 鲁S106 步驟 15 19854*I is again devalued and then returns to step S10 2, and when it is higher than the set value, then progresses to step: S106 performs inspection or replacement of the drill 12 . Compared with the conventional method for detecting the state of use of the drill needle, the method of increasing the non-machining stroke and reducing the drilling speed, the cutter T~, k of the present invention 4' is tied to the main #. The electric field is formed between the center #子 and the outer casing. 'When the boring needle is processed, the presence or absence of the electric field signal is determined to determine the shape of the knife. It is necessary to set the relevant detecting device around the bur. Therefore, the I♦ technique can effectively Shorten the non-machining stroke and speed up the drilling. In actual tests, the drilling speed can be increased by about 30%. Moreover, compared with the conventional technology, the carbon brush contact detecting method is easy to cause the burs to be quickly worn and damaged, and the tool state detecting method of the present invention does not need to be connected with any structure (4) burrs (4) to avoid the increase of material wear. speed. - In addition to the fact that there is a problem that the state of the drill needle cannot be determined by the dust waste method in the prior art, the tool state detecting method of the present invention can clearly determine the state of the drill needle by the presence or absence of the electric field signal. Moreover, compared with the conventional techniques for detecting the state of the drill needle, for example, the precision required by the method of light blocking detection is very high, and the dust control method has the disadvantage that the dust collection amount is difficult to handle. The tool state detection method of the present invention only needs to be energized to make the main rotor of the main ',, and the core positively charged, and the outer casing is negatively charged, and the outer casing is: Electrically connected to the processing machine, it is not necessary to precisely set the second secondary product, and the state of the bur can be measured by the medium in a cost-saving manner. In addition, it is possible to measure the time each time the bur is in contact with the work. When the time required for the drill to contact the work is more than the normal 値 1985 13 434 Ί Ί Ί Ί Ί , , , , , , , , , 代表The critical value can also be actively replaced at this time. As can be seen from the above, the tool state detecting device and method of the present invention can improve the shortcomings of the prior art, and can early find the wear of the drill pin, thereby having the value of the ancient product industry. The embodiments described above are merely illustrative of the features and functions of the present invention, and are not intended to limit the scope of the present invention, without departing from the spirit and scope of the present invention. Any equivalent changes and modifications made by the disclosure of the present invention should still be covered by the scope of the following claims. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a schematic view showing a tool state detecting device of the present invention; Fig. 2 is a view showing a state in which an inductive electric field is generated by a center rotor and a casing of a spindle motor in the tool state detecting device of the present invention; A schematic diagram showing the tool state detecting device of the present invention when the drill pin touches the work object; and [the main component symbol description] 1 spindle motor 10 center rotor 11 outer casing 12 drill needle 2 work object 3 processing machine fourth figure A flow chart showing the tool state detecting method of the present invention. 19854 14 1301434 i * 4 Tool state detecting device 41 Electric field signal generator 42 Electric field signal processor 43 Controller a First radius b Second radius r Third radius + Q First charge • —Q Second charge 1 Length 5101 Step 5102 Step 5103 Step 5104 Step 5105 Step Lu S106 Step 15 19854