200949223 九、發明說明： 【發明所屬之技術領域】 本發明係有關於一種風扇轉子不平衡振動量之測量方 法，這種測量方法可避免因風扇帶動機構的不良，而影響 測量風扇轉子不平衡振動量及風扇轉子不平衡質量之方 法0 【先前技術】 風扇之製造過程中，由於材料及加工過程不可能完美， 而造成風扇轉子會有不平衡的現象，風扇轉子不平衡量會 致使風扇成品轉動時有大量振動產生。所以風扇之製造過 程中必須測得風扇轉子之不平衡質量，並加以修正，如此 便能使風扇成品振動量減少。風扇轉子不平衡質量可藉由 風扇轉子不平衡振動量得知。 現有的不平衡質量修正的機器大約可分成兩種： 一、是利用風扇成品的之機構來使風扇轉子旋轉，並藉 由振動感測器測得不平衡振動量，由這不平衡振動量可換 算成風扇轉子之不平衡質量，這種方法稱之為被動式動平 衡機，整台平衡機只有風扇轉子在轉動，所以振動感測器 測得振動量為風扇轉子的振動量；其缺點若是風扇成品的 機構與風扇轉子密合度不好時，使得不平衡振動量之測量 非常不精確，致使換算成風扇轉子之不平衡質量及角度也 200949223 相當不精確；其優點只是製造及維護成本較低。 二、是利用平衡度非常好之轉動機構來帶動風扇轉子旋 轉，這轉動機構與風扇轉子接合度非常好，可準確測量風 扇轉子的不平衡振動量，同時藉由這不平衡振動量可換算 成風扇轉子之不平衡質量，如此便能正確地修正風扇轉子 之不平衡質量；但這方法的缺點是平衡度非常好之轉動機 構其製造及維護成本非常高，而且這轉動機構會隨使用次 數與時間而使其平衡度逐漸變差，如此便會使測量風扇轉 子的振動量變得不準確，因為轉動機構平衡度變差時，振 動感測器會同時測到風扇轉子及風扇帶動機構之不平衡 振動量，而無法得知單獨風扇轉子不平衡振動量；一般業 界常常在固定時間會更換轉動機構之零配件以便達到準 確地測量風扇轉子的不平衡質量，所以維護成本會很高。 【發明内容】 本發明之主要目的在於提供一種風扇轉子不平衡振動 量之測量方法，藉由這種測量方法可使動平衡機的製造及 維護成本變得很低。 這風扇轉子不平衡振動量之測量方法，包括下列步驟： 將一風扇轉子放置於一風扇帶動機構上，測得風扇轉子及 風扇帶動機構之不平衡振動量，再將風扇轉子或風扇帶動 機構移動一個相對不同角度，如（第一圖）所示，再測得 6 200949223 第二次風扇轉子及風扇帶動機構之不平衡振動量，由 次之不平衡振動值及移動錢可計算线扇轉子及風扇 帶動機構個別的不平衡振動量，這種測量方法可避免因風 扇帶動機構的不良，而影響風扇轉子不平衡振動量及風扇 轉子不平衡質量之測量方法。 【實施方式】 ❹ 風扇轉子的不平衡振動量測定機構如（第二圖）所示， 測量風扇轉子不平衡振動量時，首先要啟動馬達⑷，風 扇轉子夾具（2)藉由皮帶⑺來帶動，由於風扇轉子夹 具（2)與風扇轉子⑴緊密結合，所以風扇轉子爽具（2) 轉動的速度與風扇轉子⑴的速度是相同的，所以振動 感測器（6、7)可測得測得風扇轉子⑴及風扇帶動機 構之不平衡振動量，圖中之轉速及相角檢知器（5)用於 檢知風扇轉子夾具⑺的轉速及相角，馬達⑷的轉速 ❹與風扇轉子夾具⑴由於皮帶輪的大小不同，所以馬達 (4)，轉速與風扇轉子夾具（2)的轉速是不同的所以 所測得振動量可藉由振動頻率不同來分離馬達⑷之振 動與風扇轉子⑴及風扇帶動機構之不平衡振動量；但 ,扇轉子⑴及風扇帶動機構之不平衡振動量由於轉速 =相同’所以無法直接分離’需藉由本發明來測得風扇轉 千及風扇帶動機構個別的不平衡振動量。 本發明提供一方法將風扇轉子⑴及風扇帶動機構之 200949223 不平衡振動量分離，其方法是將兩次測量之不平衡振動量 藉由向量運算，如（第三圖）所示，可分別得知風扇轉子 之不平衡振動量及風扇帶動機構之不平衡振動量，因不平 衡的振動量是線性組合，兩次的測量數值可使用數學向量 運算求得各自的不平衡振動量。 藉由本發明能使動平衡機的製造及維護成本變低，因為 要製造不平衡質量非常低的夾具非常困難，而且非常耗 時，致使平衡機的製造成本非常高，夾具也會因為使用的 時間會使不平衡產生，所以維護上也很麻煩，本發明可輕 易地解決以上問題。 【圖式簡單說明】 第一圖係為根據本發明之一實施例，之風扇轉子或風扇 帶動機構移動一個相對不同角度之平面示意圖： 第二圖係為根據本發明之一實施例，之風扇轉子動平衡 校正裝置之平面示意圖： 第三圖係為根據本發明之一實施例，之風扇轉子動平衡 振動量與風扇帶動機構之不平衡振動量之向量分析圖： 200949223 【主要元件符號說明】 1風扇轉子 2風扇轉子夾具 3皮帶 4. 馬達 5. 轉速及相角檢知器 6. 振動感知器 7. 振動感知器 8. 氣壓缸 11. 風扇轉子夾具 12. 風扇轉子200949223 IX. Description of the Invention: [Technical Field] The present invention relates to a method for measuring the unbalanced vibration amount of a fan rotor, which can avoid the unbalanced vibration of the measuring fan rotor due to the defect of the fan driving mechanism Method and quantity of unbalanced mass of fan rotor [Prior Art] During the manufacturing process of the fan, the material and the machining process may not be perfect, which may cause the fan rotor to be unbalanced. The unbalance of the fan rotor will cause the finished fan to rotate. There is a lot of vibration generated. Therefore, the unbalanced mass of the fan rotor must be measured and corrected in the manufacturing process of the fan, so that the vibration amount of the fan product can be reduced. The unbalanced mass of the fan rotor can be known by the amount of unbalanced vibration of the fan rotor. The existing unbalanced mass correction machines can be divided into two types: First, the mechanism of the finished fan is used to rotate the fan rotor, and the unbalanced vibration amount is measured by the vibration sensor, and the unbalanced vibration amount can be Converted into the unbalanced mass of the fan rotor, this method is called passive dynamic balancing machine. The whole balancing machine only rotates the fan rotor, so the vibration sensor measures the vibration amount of the fan rotor; its disadvantage is if it is a fan. When the tightness of the finished mechanism and the fan rotor are not good, the measurement of the unbalanced vibration amount is very inaccurate, so that the unbalanced quality and angle converted into the fan rotor are also quite inaccurate; the advantage is that the manufacturing and maintenance costs are low. Second, the rotation mechanism with very good balance is used to drive the rotation of the fan rotor. The rotation mechanism and the fan rotor are very well coupled, and the unbalanced vibration amount of the fan rotor can be accurately measured, and the unbalanced vibration amount can be converted into The unbalanced mass of the fan rotor can correct the unbalanced mass of the fan rotor correctly; however, the disadvantage of this method is that the rotating mechanism has a very high manufacturing and maintenance cost, and the rotating mechanism will be used with the number of times. The balance of time gradually deteriorates, which makes the vibration of the measuring fan rotor inaccurate. When the balance of the rotating mechanism becomes worse, the vibration sensor will simultaneously measure the imbalance of the fan rotor and the fan driving mechanism. The amount of vibration, and the amount of unbalanced vibration of the individual fan rotors cannot be known; the industry often replaces the components of the rotating mechanism at a fixed time in order to accurately measure the unbalanced quality of the fan rotor, so the maintenance cost is high. SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for measuring the unbalanced vibration amount of a fan rotor, by which the manufacturing and maintenance cost of the dynamic balancing machine can be made low. The method for measuring the unbalanced vibration amount of the fan rotor comprises the following steps: placing a fan rotor on a fan driving mechanism, measuring the unbalanced vibration amount of the fan rotor and the fan driving mechanism, and then moving the fan rotor or the fan driving mechanism A relatively different angle, as shown in the (first figure), and then measured the unbalanced vibration of the second fan rotor and the fan-driven mechanism of 200929423, and the wire rotor and the rotor can be calculated from the unbalanced vibration value and the mobile money. The fan drives the individual unbalanced vibration amount. This measurement method can avoid the measurement method of the unbalanced vibration of the fan rotor and the unbalanced quality of the fan rotor due to the defect of the fan driving mechanism. [Embodiment] 不 The unbalanced vibration amount measuring mechanism of the fan rotor is as shown in (Fig. 2). When measuring the unbalance vibration amount of the fan rotor, first start the motor (4), and the fan rotor clamp (2) is driven by the belt (7). Since the fan rotor clamp (2) is tightly coupled with the fan rotor (1), the fan rotor cooling device (2) rotates at the same speed as the fan rotor (1), so the vibration sensor (6, 7) can be measured. The unbalanced vibration amount of the fan rotor (1) and the fan driving mechanism is obtained. The rotation speed and phase angle detector (5) in the figure are used to detect the rotation speed and phase angle of the fan rotor clamp (7), the rotation speed of the motor (4) and the fan rotor fixture. (1) Since the size of the pulley is different, the rotation speed of the motor (4) and the fan rotor clamp (2) are different, so the measured vibration amount can separate the vibration of the motor (4) and the fan rotor (1) and the fan by the vibration frequency. The unbalanced vibration amount of the driving mechanism; however, the unbalanced vibration amount of the fan rotor (1) and the fan driving mechanism cannot be directly separated due to the rotation speed = the same 'the wind to be measured by the present invention And several thousand turn unbalance vibration fan drive mechanism. The invention provides a method for separating the unbalanced vibration amount of the fan rotor (1) and the fan driving mechanism of 200949223 by the vector operation of the two measured unbalanced vibration quantities, as shown in (third figure), respectively Knowing the unbalanced vibration amount of the fan rotor and the unbalanced vibration amount of the fan driving mechanism, the unbalanced vibration amount is a linear combination, and the two measured values can be obtained by mathematical vector calculation to obtain the respective unbalanced vibration amounts. The invention can make the manufacturing and maintenance cost of the dynamic balance machine low, because it is very difficult to manufacture the clamp with very low unbalanced quality, and it is very time consuming, so that the manufacturing cost of the balance machine is very high, and the fixture is also used because of the time of use. The imbalance is generated, so maintenance is also troublesome, and the present invention can easily solve the above problems. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a schematic plan view of a fan rotor or a fan driving mechanism moving at a relatively different angle according to an embodiment of the present invention: The second figure is a fan according to an embodiment of the present invention. Schematic diagram of the rotor dynamic balance correcting device: The third figure is a vector analysis diagram of the fan rotor dynamic balance vibration amount and the unbalanced vibration amount of the fan driving mechanism according to an embodiment of the present invention: 200949223 [Major component symbol description] 1 fan rotor 2 fan rotor clamp 3 belt 4. motor 5. speed and phase angle detector 6. vibration sensor 7. vibration sensor 8. pneumatic cylinder 11. fan rotor clamp 12. fan rotor