【摘要】：五軸聯(lián)動(dòng)數(shù)控機(jī)床是科技含量高、精密度高、用于加工復(fù)雜曲面的機(jī)床，這種機(jī)床對(duì)國(guó)家的航空、航天、軍事、科研、精密器械、高精醫(yī)療設(shè)備等行業(yè)，有著舉足輕重的影響力。本課題研究教學(xué)用的五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)。首先，，本文綜合敘述了五軸聯(lián)動(dòng)數(shù)控機(jī)床的發(fā)展歷史，分析了不同布局的五軸聯(lián)動(dòng)龍門(mén)銑床設(shè)計(jì)的優(yōu)缺點(diǎn)，給出教學(xué)用五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)的結(jié)構(gòu)選擇并給出布局方案。布局方案包括機(jī)床設(shè)備的布局設(shè)計(jì)、雙轉(zhuǎn)臺(tái)進(jìn)給系統(tǒng)的工作范圍、坐標(biāo)軸原點(diǎn)、銑削力和焊接工藝特性。 其次，對(duì)教學(xué)用五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)的布局設(shè)計(jì)進(jìn)行了研究包括對(duì)五軸聯(lián)動(dòng)進(jìn)給機(jī)構(gòu)、主軸機(jī)構(gòu)。計(jì)算執(zhí)行機(jī)構(gòu)的參數(shù)并對(duì)設(shè)備進(jìn)行選型，利用Creo三維設(shè)計(jì)軟件搭建了教學(xué)用五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)的三維仿真模型。從可靠性的角度，分析了教學(xué)用五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)的設(shè)計(jì)參數(shù)是否達(dá)到預(yù)期工作參數(shù)。然后，針對(duì)樣機(jī)的三維模型，進(jìn)行了裝配工藝的設(shè)計(jì)與研究包括對(duì)雙轉(zhuǎn)臺(tái)進(jìn)給系統(tǒng)中電機(jī)、聯(lián)軸器、編碼器、軸承、潤(rùn)滑、密封設(shè)備等進(jìn)行選型和模擬裝配，模擬實(shí)際裝配過(guò)程中出現(xiàn)的問(wèn)題和解決方案。 最后，利用Creo的仿真模塊，對(duì)教學(xué)用五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)的進(jìn)給傳動(dòng)系統(tǒng)進(jìn)行靜力學(xué)、運(yùn)動(dòng)學(xué)仿真。分析了教學(xué)用五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)在加工時(shí)的靜動(dòng)態(tài)性能的表現(xiàn)能力，驗(yàn)證了本設(shè)計(jì)的正確性使五軸聯(lián)動(dòng)數(shù)控銑床原理樣機(jī)達(dá)到預(yù)期的加工精度要求。
[Abstract]:Five-axis linkage CNC machine tool is a machine tool with high scientific and technological content and high precision, which is used to process complex curved surfaces. This machine tool can be used in the aviation, aerospace, military, scientific research, precision instruments, high-precision medical equipment and other industries of the country. Have a decisive influence. This paper studies the principle prototype of five-axis linkage NC milling machine used in teaching. Firstly, this paper describes the development history of five-axis linkage CNC machine tool, analyzes the advantages and disadvantages of the design of five-axis linkage gantry milling machine with different layout, and gives the structure selection and layout scheme of the principle prototype of five-axis linkage CNC milling machine for teaching. The layout scheme includes the layout design of the machine tool equipment, the working range of the double turntable feed system, the origin of the coordinate axis, the milling force and the welding process characteristics. Secondly, the layout design of the principle prototype of five-axis linkage NC milling machine for teaching is studied, including the five-axis linkage feed mechanism and spindle mechanism. The parameters of the actuator are calculated and the equipment is selected. The 3D simulation model of the principle prototype of the five-axis linkage NC milling machine for teaching is built by using Creo three-dimensional design software. From the point of view of reliability, this paper analyzes whether the design parameters of the principle prototype of five-axis linkage NC milling machine used in teaching reach the expected working parameters. Then, according to the 3D model of the prototype, the design and research of assembly process include the selection and simulation assembly of the motor, coupling, encoder, bearing, lubrication, sealing equipment, etc. Simulate the problems and solutions in the actual assembly process. Finally, using the simulation module of Creo, the statics and kinematics simulation of the feed transmission system of the principle prototype of five-axis linkage NC milling machine for teaching is carried out. The performance of static and dynamic performance of the principle prototype of five-axis linkage NC milling machine for teaching is analyzed, and the correctness of the design is verified, which makes the principle prototype of five-axis linkage NC milling machine meet the expected machining accuracy requirements.
【學(xué)位授予單位】：東華大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類(lèi)號(hào)】：TG659

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