【摘要】：由于五軸機(jī)床受裝配精度和旋轉(zhuǎn)部件的影響,使機(jī)床出現(xiàn)結(jié)構(gòu)誤差造成刀具在刀位點(diǎn)處出現(xiàn)偏移,影響機(jī)床的加工精度。Axi Set五軸測(cè)量工具可在三維空間內(nèi)對(duì)機(jī)床旋轉(zhuǎn)軸性能進(jìn)行快速、準(zhǔn)確的自動(dòng)測(cè)量,只是沒(méi)有提供誤差補(bǔ)償?shù)认嚓P(guān)功能且國(guó)產(chǎn)數(shù)控系統(tǒng)并未集成與之有關(guān)的測(cè)量方案。本文通過(guò)分析Axi Set設(shè)備的系統(tǒng)集成方案,結(jié)合現(xiàn)有五軸測(cè)量方法,根據(jù)機(jī)床結(jié)構(gòu),建立三類五軸機(jī)床運(yùn)動(dòng)學(xué)模型。分析各項(xiàng)機(jī)床參數(shù)對(duì)刀心點(diǎn)位置的影響,使用Axi Set組件中的3D測(cè)針-球體裝置對(duì)標(biāo)準(zhǔn)球球心進(jìn)行不同角度的多次測(cè)量,記錄每次測(cè)量時(shí)的標(biāo)準(zhǔn)球位置,結(jié)合五軸轉(zhuǎn)換關(guān)系,對(duì)機(jī)床參數(shù)進(jìn)行精確求解。根據(jù)測(cè)量原理,設(shè)計(jì)基于Axi Set的五軸測(cè)量方法并確定測(cè)量流程,將此測(cè)量方案集成到國(guó)產(chǎn)藍(lán)天數(shù)控中。本文所提出的測(cè)量方法,對(duì)五軸機(jī)床的誤差補(bǔ)償正確描述了機(jī)床特征,保證了機(jī)床機(jī)械參數(shù)與數(shù)控系統(tǒng)參數(shù)的一致,而且對(duì)建立的各類誤差模型均具有很好的通用性。Axi Set工具能夠直接測(cè)量五軸機(jī)床的整體位置誤差,從而縮短了獲取測(cè)量值的時(shí)間,提高了測(cè)量速度,不僅可提高現(xiàn)有數(shù)控機(jī)床的加工精度,而且為以后多軸機(jī)床的測(cè)量提供了統(tǒng)一的測(cè)量基礎(chǔ)。
[Abstract]:Due to the influence of assembly precision and rotating parts on the five-axis machine tool, the structural error of the machine tool causes the tool deviation at the tool location. The five-axis measuring tool, which affects the machining accuracy of machine tools, can be used to measure the rotary axis performance of the machine tool quickly and accurately in three dimensional space. However, there are no related functions such as error compensation and the domestic NC system does not integrate the related measurement scheme. In this paper, by analyzing the system integration scheme of Axi set equipment and combining the existing five-axis measurement methods, three kinds of kinematics models of five-axis machine tools are established according to the machine tool structure. The influence of machine tool parameters on the position of the center of the cutter is analyzed. The standard ball center is measured several times at different angles by using the 3D needle-ball device in the Axi set module, and the standard ball position is recorded each time, combining with the five-axis conversion relationship. The parameters of the machine tool are solved accurately. According to the principle of measurement, the five-axis measurement method based on Axi set is designed and the measuring flow is determined. The measurement scheme is integrated into the domestic blue sky numerical control system. The measurement method presented in this paper correctly describes the characteristics of the machine tool for the error compensation of the five-axis machine tool, and ensures the consistency of the mechanical parameters of the machine tool with the parameters of the numerical control system. Moreover, all kinds of error models have good generality. Axi set tool can directly measure the overall position error of five-axis machine tool, thus shortening the time of obtaining the measurement value and improving the measuring speed. It can not only improve the machining accuracy of existing NC machine tools, but also provide a unified measurement basis for the measurement of multi-axis machine tools in the future.
【學(xué)位授予單位】：中國(guó)科學(xué)院研究生院（沈陽(yáng)計(jì)算技術(shù)研究所）
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TG659

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相關(guān)期刊論文 前1條

1 張為民;楊瑋瑋;褚寧;賀鑫元;;五軸頭回轉(zhuǎn)中心的幾何誤差檢測(cè)與補(bǔ)償[J];制造技術(shù)與機(jī)床;2009年02期

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本文編號(hào)：2119530