需要金幣： 1000 個(gè)金幣 |
資料包括：完整論文 |  |
 |
| 轉(zhuǎn)換比率：金額 X 10=金幣數(shù)量， 例100元=1000金幣 | 論文字?jǐn)?shù)：17284 |  | |
| 折扣與優(yōu)惠：團(tuán)購(gòu)最低可5折優(yōu)惠 - 了解詳情 | 論文格式：Word格式(*.doc) |  |
摘要:近年來(lái)，世界裝備制造業(yè)正向高速度、高精度、高效率的方向發(fā)展。高速數(shù)控機(jī)床，作為高速加工方法之一，具有高效、加工表面優(yōu)良等優(yōu)點(diǎn)，在制造中得到了廣泛的應(yīng)用。而作為高速數(shù)控機(jī)床核心部件的高速電主軸，由于其對(duì)數(shù)控機(jī)床的加工精度起著決定性作用，倍受人們關(guān)注。 高速電主軸的關(guān)鍵技術(shù)之一是電主軸的動(dòng)態(tài)性能實(shí)驗(yàn)技術(shù)。目前，高速電主軸實(shí)驗(yàn)加載方法普遍采用對(duì)拖式加載方法，這種加載方法只能提供主軸的扭矩加載，不能提供主軸的徑向加載。這些技術(shù)的不足都影響了對(duì)高速電主軸動(dòng)態(tài)性能的準(zhǔn)確測(cè)量。 本文對(duì)高速電主軸V/F變頻控制方式和矢量變頻控制方式的原理進(jìn)行了簡(jiǎn)要介紹，設(shè)計(jì)了高速電主軸非接觸式加載方案，并對(duì)高速電主軸的機(jī)械特性、恒轉(zhuǎn)矩特性進(jìn)行測(cè)試和分析。這些研究、設(shè)計(jì)以及測(cè)試分析不但避免了對(duì)拖式加載方法的弊端，解決了對(duì)高速電主軸進(jìn)行加載的實(shí)驗(yàn)難題，而且能更好的了解高速電主軸的動(dòng)態(tài)性能，易于提升數(shù)控機(jī)床的加工精度、速度以及可靠性。 關(guān)鍵詞：高速電主軸 變頻控制 測(cè)功機(jī) 非接觸式加載
ABSTRACT:In recent years, the equipment manufacturing industry has been rapidly developed towards the direction of high speed, high precision and high efficiency. As a high-speed processing method, high-speed NC machine tools with the advantages of increasing efficient, excellent machined surface has been widely used, and the high speed motorized spindle as the core component of high-speed NC machine tools which plays a decisive role in its machining accuracy has been paid much attention. One of the key technologies of high-speed motorized spindle is the dynamic performance experimental technique of motorized spindle. At present, the way of inter-drag to load on high speed motorized spindle is used, which only provide the spindle torque load, can't provide the spindle radial load. All the disadvantages of these technologies affect the accurate measurement of the high speed motorized spindle’s dynamic performance. In this paper, the principle of V/F converter control mode and vector variable frequency control mode of the high-speed motorized spindle are introduced, a non-contact loading scheme for high-speed motorized spindle is designed, the mechanical characteristics and constant torque characteristics of high speed motorized spindle are also tested and analyzed. These studies, design and test analysis not only can avoid the disadvantages caused by the inter-drag load method and well solve the problem of loading experiment for high-speed motorized spindle, but also can understand the dynamic performance of high-speed motorized spindle better, and improve machining accuracy, speed and reliability of NC machine tools more easily. Key words：High speed motorized spindle；Frequency conversion control；Dynamometer；Non-contact dynamic loading
|
