200827088 九、發明說明： 【發明所屬之技術領域】 ▲本發明係有闕於—種刀具狀態檢測 、, 言之，係有關一種應用於/、 ，，更詳 刀具磨耗或斷刀盘^ 作物進行切削作業之 【先=㈣之刀具狀態檢測裝置及方法。 刀具進行ε加工作業時，須即時_ 攀例，係藉由高速非接觸式氣買轉業為 成，鑽孔機具有快、釋、准等古達夹持鑽針來達 ^ ^ ^ 卞荨阿性旎表現，然而鑽針於高 f運轉下亦會產生磨耗甚至斷刀，而為了在鑽針產生磨 =斷二情形下及時發現並加以更換，以㈣^ 工=底。p相對鑽針頭端附近加設感測設備，當鑽針狀態 ^系N· ’則將訊息回傳至相關控制非接觸式馬達之控制 器:以停機更換鑽針。目前偵測鑽針運轉中之狀態有光線 丨遮断法石厌刷接觸法、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側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 您，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 19854 200827088 古回:κ叙有無來判斷鑽針之狀態，然而於非接觸式馬達 nr速運^下’鑽針會因接觸到碳刷而快速磨耗，且 過程中產生的粉塵以及碎屑亦會傷害非接觸式馬達之轉τ' 士；分塵石午屑偵測法係於碳刷與鑽針對加工物件加工 ntt二粉塵以及碎屑以集塵器加以蒐集，再根據奪 内的叔塵及碎屑感測器訊號來偵測鑽 粉塵蒐集量卻有難以曰# 狀心然兩 _上的禮4“、、、 擾，且粉塵中含多少比例以 針成方可判㈣針已受損之標準亦難以制定，因 土 f知知塵碎屑偵測法難以應用於實際操作上。 ㈣n? H /則法是在主軸驅動器的電流輸出線安裝 二t::，鑽針於加工時因扭力而產生的電流變 化’來偵測鑽針之狀態。 、…電Μ訊號偵測法是在加工物件與機台間建立電位 藉由鑽針貫穿上層加工物件之動作，將上層電壓抑 丨傳：至下層，電腦控制器再根據電塵訊號來： 測鑽針的狀態。 惟驅動電流_法以及電壓訊號_法均必須 感測器，而增加整體鑽孔機之成本，並且速 且微孔之狐作業，因此料成應則請之㈣ 速 再者，鑽針之頭端於未進行加工動作前離開工作物之 7又無為非加工行程，而非加工行程係與鑽孔速度呈反 t，因此各式之㈣機均著重於縮小非加騎程以提升鑽 孔k度’然而上述之光線遮斷法、碳刷接觸法、粉塵碎屑 1985 6 200827088 荒集法、電壓訊號法、或驅動電流法，均多少 附近增設偵測裝置或感、針 行程，進而影響鑽孔速度。…因此而增加非加工 題。因此’如何改善以上種種缺點，為當今亟待思考之課 【發明内容】 繁於以上所述習知技術缺 仪何之缺點，本發明之一目的在於 _ I、一種刀具狀態檢測裝 罾< 及方法毋須於該刀具周圍增 5又偵測裊置，俾可具有最小之加工行程。 本4月之_人-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。 本發明之再-目㈣提供ϋ 態檢測裝置及方法。 /、狀 本發明之又-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，本私 壯班不毛明棱供一種刀具狀態檢測 衣置，係應用於檢測針對卫作物進行加卫作業之刀具狀 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 ^轴馬達之外殼保持絕緣。該刀具狀態檢測裂置包括：電 場訊號產生器，用以施加電場訊號於該至轴馬達之外殼， 以使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 200827088 並根據該感應電場之訊號之狀態而輪出相對訊號·以及护^ 制裔’麵合至該電場訊號處理器且根據該相對訊號以判巧 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。 . 本發明亦揭示一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，該方法包括··施加電場訊號於該主軸馬達之外殼， i使該外殼與該中，讀子間產生感應電場；令該主軸馬達 可動该刀具以對工作物進行加工作業；以及於加工作業中 偵測鵁感應電場之存在與否，當該感應電場因刀具接觸工 :物=k該加工機台接地而使訊號消失時，視為未斷刀狀 ⑩悲，當该感應電場之訊號持續存在時，則視為斷刀狀態。 羽就應用於鑽孔作業為例，該刀具係為一鑽針，相較於 "技術中各種關於偵測鑽針使用狀態之方法會造成增 =非加工行程而降低鑽孔速度，本發明之刀具狀態檢測9方 料係於主軸馬達之中心轉子及外殼間形成電場，再於鑽 進=鑽孔作業時’㈣該電場訊號之有無，以判斷鑽針 二:悲，毋需於鑽針週遭設置相關偵測裝置，因此，相較 於省知技術可有效士 — ’欢地細紐非加工行程而加快鑽孔速度，於 貫際測試中，約可加快·之鑽孔速度。 、 19854 8 200827088 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蒐集法有鑽針狀態無法 確疋之疑慮’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、粉塵荒集法 ❿粉塵冤集量難以拿捏之缺點，均會導致_鑽針狀態所需 之成本提高；本發明之刀具狀態檢測方法只須通電使^ 軸馬達之中心轉子帶正電荷，而使該外殼感應帶負電荷， 再將該外殼電性導接於該加工機台上即可，毋須精密的^ 置精度，亦不須荒集副產品，而可以節省成本之，: 確地測出該鑽針之狀態。 1 - 另外，並可量測出每次鑽針接觸到工作物之時間，杏 •⑩發現鑽針接觸該工作物所需時間偏離正常錄 : 鑽=所受之磨耗過大，亦可於此時主動更換鑽針。、 【貫施方式】 以下係藉由特定的具體實施例說明本發明之實 式’所屬技術領域中具有通常知識者可由本說明奎 之内容輕易地瞭解本發明之其他優點與功效。"‘不 打_ 1圖至第3圖，係本發明刀具狀態檢 =法之具體實施例’於本實施例中係以應用於鑽孔^ 為例，因此係以鑽針代表刀具，惟所屬技術領域中具^ 19854 9 200827088 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，主軸馬達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10運轉時， 該主轴馬達1係導入空氣於該中心轉子1 〇及該外殼11 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1〇之帶動而旋 _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Π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！ 〇及該外殼} i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 ‘ 狀怨而輸出相對訊號之電場訊號處理器42、以及接收由 电％ Λ號處理态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i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 外殼π使其帶有正電’而由於該中心轉子1()絕緣於該外 殼η，因此該中心轉子10會感應電場而帶有負電，現就 以下參數加以定義：中心轉子10之第一半徑=a、中心轉 子中心至該外殼π夕卜表面之第二半捏=b、電場£產生 之處與中心轉子10中心之第三半#=r，且a<r<b、鑽 19854 10 200827088 :12所帶之第一電荷，、外之 電糸數=ε、雷才寺宓由 π <罘一包何，介 感應之長度為Ι、*^'λ、外殼11與該中心轉子Μ產生 4、電容心當/，=子1(:^风、外殼u之電位 電場訊號於該外殼產生1141亦可施加 應電場帶有正電，使懸':負电且該中心轉子10會感 使鑽針12所帶之第一 + Λ … 所帶之第二電荷則=+Q 屯何一—Q、而外忒 已知的是a、bw、ε等參數 1殼11間的電位差係Va—Vb=R)•办 轉子10與外 代入前一式 而又可由丄i 2n r 求得中心轉子1G與外殼u間的電位差200827088 IX. Description of the invention: [Technical field to which the invention pertains] ▲ The present invention relates to the detection of a tool state, in other words, to a tool for /, ,, more detailed tool wear or broken cutters ^ crops [1] Tool state detection device and method for cutting operation. When the tool is used for ε machining, it must be instant _ climbing, which is made by high-speed non-contact gas purchase. The drilling machine has fast, release and quasi-Guda clamp tongs to reach ^ ^ ^ 卞荨Sexual sputum performance, however, the burring will also cause wear and even broken knives under high f operation, and in order to find and replace the bur in the case of grinding/breaking, in order to (4) work = bottom. p is provided with a sensing device near the end of the drill pin. When the state of the drill pin is N· ', the message is transmitted back to the controller of the related control non-contact motor: the drill bit is replaced by the stop. At present, the detection of the state of the bur is in the presence of light 丨 丨 法 厌 厌 厌 厌 厌 接触 接触 、 、 、 、 、 、 、 厌 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 The light interception method is to set the projection and receive light on both sides of the drill needle, and judge the shape of the drill needle according to whether the light receiving end receives the optical signal, but 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 and the drill needle, and judges the state of the drill needle according to the carbon brush: 1985, 2008, 270, 00:00, but the non-contact motor nr Touching the carbon brush and quickly wearing, and the dust and debris generated in the process will also damage the non-contact motor's turn τ's; the dust-removing stone cutting method is applied to the carbon brush and drill for processing object processing ntt two Dust and debris are collected by a dust collector, and it is difficult to detect the amount of dust collected according to the uncle and debris sensor signals in the inside. Disturbance, and the proportion of dust contained in the needle can be judged. (4) The standard that the needle has been damaged is difficult to formulate, because the soil debris detection method is difficult to apply to practical operations. (4) n? H / method is In the current output line of the spindle driver, two t::, the current change caused by the torque during the machining of the drill pin is used to detect the state of the drill pin. ..., the electric signal detection method is between the workpiece and the machine. Establishing the potential by the action of the drill pen through the upper layer of the workpiece, the upper layer voltage丨 丨 : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : And the micro-hole fox works, so the material should be requested. (4) Speed, the head end of the drill needle leaves the work object before the machining operation, and there is no non-machining stroke, not the processing stroke system and the drilling speed. It is inverse t, so all kinds of (4) machines focus on reducing the non-additional ride to increase the hole k degree. However, the above-mentioned light interception method, carbon brush contact method, dust debris 1985 6 200827088 waste method, voltage signal The method or the driving current method adds some detection devices or sense and needle strokes nearby, which in turn affects the drilling speed.... Therefore, non-processing problems are added. Therefore, 'how to improve the above various shortcomings, for the lesson to be considered today[invention Contents] In view of the shortcomings of the above-mentioned conventional techniques, one of the objects of the present invention is that _I, a tool state detection device < and a method do not need to increase the number of 5 around the tool and detect the device, With The minimum processing stroke. This April's _ person-purpose is to provide a tool state detecting device and method, and to clearly determine the wear or broken state of the tool. The re--(4) of the present invention provides an 检测 state detecting device and The method of the present invention is to provide a tool state detecting device and method that does not require contact with a worn tool. In order to achieve the above and other purposes, the private class is not for the purpose of detecting the clothing state. The utility model is used for detecting a tool shape for cultivating a crop. The work item is arranged on a processing machine, and the tool is driven to rotate by a central rotor of the spindle motor, and the central rotor of the spindle motor is coupled to the motor The outer casing is insulated. The tool state detecting split includes: an electric field signal generator for applying an electric field signal to the outer casing of the shaft motor to generate an induced electric field between the outer casing and the central rotor; and an electric field signal processor Receiving an inductive electric field signal from the outer casing of the spindle motor, 19854 7 200827088 and rotating the phase according to the state of the signal of the induced electric field The signal and the protection device are combined to the electric field signal processor and the presence or absence of the induced electric field is determined based on the relative signal when the induced electric field is contacted by the tool and grounded through the processing machine. When the signal of the induced electric field disappears, it is regarded as an unbroken state; when the signal of the induced electric field continues to exist, it is regarded as a broken state. The invention also discloses a tool state detecting method, which is applied to detecting a tool state for processing a work object, the work object is disposed on a processing machine, and the tool is driven 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 method comprising: applying an electric field signal to the outer casing of the spindle motor, i causing an induced electric field between the outer casing and the middle and the read; The tool can be moved to work on the workpiece; and the presence or absence of the induced electric field is detected during the processing operation. When the induced electric field is caused by the tool contact: the object is grounded, the signal disappears. In the case of an unbroken knife, when the signal of the induced electric field persists, it is regarded as a broken state. The feather is applied to the drilling operation as an example. The tool is a drill needle, and the method of reducing the drilling speed is caused by the method of detecting the state of use of the drill needle in the technique. The tool state detection 9 square material forms an electric field between the center rotor of the spindle motor and the outer casing, and then when drilling = drilling operation '(4) the presence or absence of the electric field signal, to judge the drill needle 2: sad, need for the drill needle The relevant detection device is installed around, so that the drilling speed can be speeded up compared with the known technology, and the drilling speed can be accelerated in the continuous test. 19854 8 200827088 Moreover, compared with the prior art, the carbon brush contact detection method easily leads to the lack of rapid wear and damage of the drill bit. The tool state detection method of the present invention does not need to contact the drill needle with any structure to avoid an increase. The speed at which the bur is worn. - In addition, in the prior art, the dust collection method has the problem that the state of the drill needle cannot be confirmed. In the tool state detection method of the present invention, the state of the drill needle can be clearly determined 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 dust collection method is difficult to handle the dust dust collection. The cost required for the _needle state is increased; the tool state detecting method of the present invention only needs to be energized to cause the central rotor of the motor to be positively charged, and the outer casing is induced to be negatively charged, and then the outer casing is electrically connected. It can be used on the processing machine without precision precision, and it is not necessary to waste the by-products, which can save cost: Measure the state of the drill. 1 - In addition, it is possible to measure the time each time the bur is in contact with the work. Apricot 10 finds that the time required for the bur to contact the work deviates from the normal record: Drill = the wear is too large, or at this time Proactively replace the drill. [Embodiment] The following is a description of the actual embodiments of the present invention by way of specific embodiments. Those skilled in the art can readily appreciate the other advantages and advantages of the present invention. " 'Do not hit _ 1 to 3, the specific embodiment of the tool state detection method of the present invention' is applied to the drilling hole ^ in this embodiment, so the bur is used to represent the tool, It is to be understood by those skilled in the art that the invention is not limited to application in drilling operations, and that the tool is not limited to the drilling needle. 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 10 is in operation, the spindle motor 1 introduces air into the center rotor 1 and the casing 11 The center rotor 10 is air-frozenly insulated from the outer casing 11 therebetween. One end of the center rotor 10 is exposed to the spindle motor 1 and is clamped with a drill pin 12, which is rotated by the central rotor 1 to perform drilling on a workpiece 2. The work object 2 can be a printed circuit board and carried on a processing machine 3. The casing Π and the processing machine 3 are electrically connected to a tool state detecting device 4 for detecting the state of the bur 12, and the tool state detecting device 4 includes: for the center rotor! And an electric field signal generator 41 for generating an induced electric field between the casings, an electric field signal processor 42 for detecting a signal of the induced electric field, and an electric field signal processor 42 for outputting a relative signal, and receiving the electric power Λ 处理The relative signal is transmitted to determine the presence or absence of the induced electric field controller 43. As shown in Fig. 2, when the center rotor 1 of the spindle motor i starts to operate, the electric field signal generator 41 simultaneously applies an electric field signal to the casing π to be positively charged 'by the center rotor 1 ( Insulated in the outer casing η, so the central rotor 10 induces an electric field with negative electric current, which is defined by the following parameters: the first radius of the central rotor 10 = a, the center of the central rotor to the second surface of the outer casing π Half pinch = b, electric field £ is generated and the third half of the center of the center rotor 10 # = r, and a < r < b, drilled 19854 10 200827088 : 12 with the first charge, the number of electric wires outside = ε, 雷才寺宓 by π < 罘一包何, the length of the induction is Ι, *^'λ, the outer casing 11 and the central rotor Μ 4, the capacitance of the heart /, = child 1 (: ^ wind, The potential electric field signal of the outer casing u is generated in the outer casing 1141, and the electric field can be applied with positive electric current to make the suspension: negatively charged and the central rotor 10 senses the first + Λ ... carried by the drill 12 The second charge is =+Q, which is one-Q, and the outer 忒 is known as a, bw, ε, etc. The potential difference between the shells 11 and the shell is Va-Vb=R) 10 and the foreign generation into the former equation and the potential difference between the central rotor 1G and the outer casing u can be obtained from 丄i 2n r
Va—Vb=^4，其中，手Va—Vb=^4, where the hand
Q 2πεΙ In- 再由電容公式可求得電容C= δ λ b V~In— 2πε ±因此，該主轴馬達因具有相互絕緣之中心轉子10與 外设11，因此形成為一電容裝置。 請配合參閱第3圖，同時該中心轉子1〇往下移動而 使該鑽針12於該加工物2上進行鑽孔，當鑽針12 斷刀狀態時，可順利地接觸於該加 d, At认 刀丄物2,而由於該刀具 狀悲檢測裝置4係電性連接於該加工 啊ϋ 3而產生有一接 地之效應，因此當該鑽針12接觸到加工物2日寺，感庫電 場與電容C會消失’可據此判斷鑽針12為非斷刀狀態。 19854 11 200827088 ‘ 訊號處理器42將輸出一“無感應電場，，之相 對Λ5虎傳送给控制器43。 然而，當該鑽針12發生折斷之情 =及工作物2,而使得感應電場與電容c保持；= =斷鑽針之狀態不正常，而必須停機檢修更換。此 ”場訊號處理器42輸出一 ‘‘有感應 對 :送給控！器43,且控制器-更可進-步啟動； 例如V止該主軸馬達或是發出警報聲響。 ^卜’即使鑽針12於每—次鑽孔作業中均可觸及該 :物2’惟該鐵針12亦有可能已產生磨耗現象而影響 作口口貝’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，與鑽針12第一次下刀狀態下，觸及 j加工機台3所需之時間相比較’當超過一定的容許值 枯，則判定鑽針12已磨耗嚴重而必須更換。 請參閱第4圖，因此，本發明刀具狀態檢測方法可由 γ驟S101產生感應電場後，於步驟si〇2讀取該刀具狀態 杬測衣置4中之感應電場之訊號，接著啟動該中心轉子 10進行前述之鑽孔作業，並於步驟S1〇3偵測感應、電場之 3存在與否當一次的鑽孔作業中，持續债測到有感應 電場之訊號時，代表鑽針12為斷刀狀態，可直接進行到 步驟S1 〇 6，進行鑽針12之更換，然而當偵測到感應電場 之訊號消失時，則進行步驟S104,將前述量測鑽針12觸 及工作物2所需時間與第一次進行鑽孔觸及工作物2所需 時間相减’步驟幻05則判斷該相减之數值，當低於一額 19854 12 200827088 ===:::高於該_時， 去合，Α点：白知技術中各種關於偵測鑽針使用狀態之方 法會造成增加非加工行程而降方 纖測方法’係於主軸馬達之t心轉子 2之:於鑽：進行加工時偵測該電場訊號之有無以判斷： 二::術:需右於鑽針週遭設置相關_裝置，因此相較 錢心非加騎㈣加快祕速度，於 •貝中’約可加快3〇%之鑽孔速度。 n# 2&於,自知技術中以碳刷接觸制法容易導致鑽 Ή毛而叉損之缺失，本發明之刀具狀態檢測方法母 、以任何結構接觸到鑽針而避免增加鑽針磨耗的速度。 又㈣乂於自知技術中以粉塵冤集法有鑽針狀態無法 1疋之疑慮’本發明之刀具狀態檢測方法以電場訊號的有 热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， 如以，阻斷债測之方法所要求之精度甚高、粉塵意集法有 知塵荒集里難以拿捏之缺點，均會導致偵測鑽針狀態所需 之成本甚高，本發明之刀具狀態檢測方法只須通電使該主 軸馬達之中心轉子帶正電荷，而使該外殼帶負電荷，再將 *亥外殼電性導接於該加工機台上即可，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 19854 13 200827088 發現鑽針接觸該工作物所需時間偏離正常値較多時，代李 鑽針所受之磨耗已屆臨界值，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，因此具有高= 產業利用價值。 又 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 疇，在未脫離本發明上揭之精神與技術範疇二广= 何運甩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 達之中心轉子與外殼產生感應電場^意^主轴馬 第3圖係_不本發明刀具狀態檢測裝置，當鑽針接 丨觸到工作物時之示意圖；以及 【主 要元件符號說明】 1 主軸馬達 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 200827088 4 41 42 43 a b r + Q • -Q 1 5101 5102 5103 5104 5105 •S106 w 刀具狀態檢測裝置 電場訊號產生器 電場訊號處理器 控制器 第一半徑 第二半徑 第三半徑 第一電荷 第二電荷 長度 步驟 步驟 步驟 步驟 步驟 步驟 15 19854Q 2πεΙ In- Further, the capacitance formula can be used to find the capacitance C = δ λ b V~In - 2πε ± Therefore, the spindle motor is formed as a capacitor device because of the center rotor 10 and the peripheral device 11 which are insulated from each other. Referring to FIG. 3, the center rotor 1〇 is moved downward to drill the drill 12 on the workpiece 2. When the drill needle 12 is broken, the d can be smoothly contacted. At the knife knives 2, and because the tool-like sorrow detection device 4 is electrically connected to the processing ϋ 3, there is a grounding effect, so when the bur 12 contacts the workpiece 2, the sensation electric field With the capacitor C disappearing, it can be judged that the drill needle 12 is in a non-broken state. 19854 11 200827088 ' The signal processor 42 will output a "no induction electric field, which is transmitted to the controller 43." However, when the bur 12 is broken and the work 2 is generated, the induced electric field and the capacitance are made. c keep; = = the state of the broken drill pin is not normal, but must be shut down for repair and replacement. This "field signal processor 42 outputs a '' sense pair: give control! The controller 43 and the controller - can be further activated; for example, the spindle motor is stopped or an alarm sounds. ^卜' Even if the drill 12 can be touched in every drilling operation: the object 2', but the iron needle 12 may also have worn out and affect the mouth. Therefore, each drilling operation can be measured. The time required for the middle drill pin _ and the work object 2 is compared with the time required to touch the j processing machine table 3 in the first undercut state of the drill bit 12, 'When a certain allowable value is exceeded, the drill is judged Needle 12 has been worn out and must be replaced. Referring to FIG. 4, therefore, the tool state detecting method of the present invention can generate the induced electric field from the gamma step S101, and then read the tool state in the step si〇2 to detect the induced electric field signal in the clothing set 4, and then start the center rotor. 10 performing the drilling operation described above, and detecting the presence or absence of the induction and electric field 3 in step S1〇3. In the drilling operation once, when the signal of the induced electric field is continuously measured, the representative needle 12 is broken. The state can be directly proceeded to step S1 〇6 to perform the replacement of the drill pin 12. However, when the signal detecting the induced electric field disappears, proceeding to step S104, the time required for the measuring stylus 12 to touch the workpiece 2 is The time required for the first drilling to touch the work item 2 is subtracted. Step Fantasy 05 determines the value of the subtraction. When it is lower than the first amount, 19854 12 200827088 ===::: higher than the _, the combination, Α : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : : The presence or absence of the electric field signal is judged: Two:: surgery: The right to drill around provision of the relevant _ devices, therefore the heart of the African, Caribbean ride compared to the money (iv) accelerate the speed of Peru, to • oyster 'about to accelerate drilling speed of 3〇%. n# 2& In the self-knowledge technology, the carbon brush contact method is easy to cause the boring of the bristles and the loss of the fork loss. The tool state detecting method of the present invention contacts the bur with any structure to avoid increasing the wear of the bur. speed. Further, (4) In the self-knowledge technique, the state of the drill needle is not possible due to the dust collection method. The tool state detection method of the present invention can clearly determine the state of the drill needle by the heat of the electric field signal. Moreover, compared with the conventional techniques for detecting the state of the drill needle, for example, the precision required for the method of blocking the debt measurement is very high, and the dust collection method has the disadvantage of being difficult to handle in the dust collection. The cost of detecting the state of the drill pin is very high. The tool state detection method of the present invention only needs to be energized to make the central rotor of the spindle motor positively charged, and the outer casing is negatively charged, and then the outer casing is electrically charged. The conductivity is guided on the processing machine, no need for precise setting accuracy, and no need to waste by-products, and the state of the bur is accurately measured in a cost-saving manner. In addition, it can measure the time each time the drill needle touches the work object. When the time required for the drill needle to contact the work object is more than normal after 19854 13 200827088, the wear of the diamond drill needle has been critical. The value can also be actively replaced at this time. It can be seen from the above that 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 bur, so it has high=industrial value. The specific embodiments described above are merely used to exemplify 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 invention. The equivalent changes and modifications made by the present disclosure to the disclosure of the present invention are still covered by the scope of the following patent application. 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 the induction electric field generated by the center rotor and the outer casing of the tool state detecting assembly of the present invention. Schematic diagram of the tool state detecting device of the present invention when the drill pin touches the work object; and [Main component symbol description] 1 Spindle motor 10 Center rotor 11 Shell 12 Drill 2 Work object 3 Processing machine Fig. 4 shows A flow chart of the tool state detecting method of the present invention. 19854 14 200827088 4 41 42 43 abr + Q • -Q 1 5101 5102 5103 5104 5105 •S106 w Tool state detection device electric field signal generator electric field signal processor controller first radius second radius third radius first charge second Charge length step step step step step 15 19854