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I 摘 要 激光切割的適用對(duì)象主要是難切割材料 如高強(qiáng)度 高韌性材料以及精密 細(xì)小和形狀復(fù)雜的零件 因而數(shù)控激光切割在我國(guó)制造業(yè)中正發(fā)揮出巨大的優(yōu) 越性 本文設(shè)計(jì)了一臺(tái)單片機(jī)控制的數(shù)控激光切割機(jī)床 主要完成了 機(jī)床整體 結(jié)構(gòu)設(shè)計(jì) Z 軸 XY 軸的結(jié)構(gòu)設(shè)計(jì)計(jì)算 滾珠絲杠 直線滾動(dòng)導(dǎo)軌的選擇及其 強(qiáng)度分析 以步進(jìn)電機(jī)為進(jìn)給驅(qū)動(dòng)的驅(qū)動(dòng)系統(tǒng)及其傳動(dòng)機(jī)構(gòu)的分析設(shè)計(jì)計(jì)算 以 89C51 為主控芯片的數(shù)控系統(tǒng)硬件電路設(shè)計(jì) 系統(tǒng)初始化設(shè)計(jì)及系統(tǒng)軟件方 案設(shè)計(jì)和步進(jìn)電機(jī)的控制程序設(shè)計(jì) 關(guān)鍵詞 CNC 激光切割機(jī)床 結(jié)構(gòu) 設(shè)計(jì) II ABSTRACT Laser cutting machine tool was usually used for the hard cutting material such as high strength material high precision ductile materials and smart and complicated components So CNC laser cutting has been playing an important role in China s manufacturing industry This paper describes the design of a SCM controlled CNC laser cutting machine tools More attention was paid on the overall machine design Z axis XY axis in the design ball screw and the choice of linear motion guide and intensity analysis the drive system into which stepper motor was put and the analysis of the drive system design 89C51 chip was mainly used for the design of hardware circuit the design of system initialization and the design of stepper motor s controlling program Key words CNC laser cutting machine tools architecture design