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I 摘 要 激光切割的適用對象主要是難切割材料 如高強度 高韌性材料以及精密 細小和形狀復(fù)雜的零件 因而數(shù)控激光切割在我國制造業(yè)中正發(fā)揮出巨大的優(yōu) 越性 本文設(shè)計了一臺單片機控制的數(shù)控激光切割機床 主要完成了 機床整體 結(jié)構(gòu)設(shè)計 Z 軸 XY 軸的結(jié)構(gòu)設(shè)計計算 滾珠絲杠 直線滾動導(dǎo)軌的選擇及其 強度分析 以步進電機為進給驅(qū)動的驅(qū)動系統(tǒng)及其傳動機構(gòu)的分析設(shè)計計算 以 89C51 為主控芯片的數(shù)控系統(tǒng)硬件電路設(shè)計 系統(tǒng)初始化設(shè)計及系統(tǒng)軟件方 案設(shè)計和步進電機的控制程序設(shè)計 關(guān)鍵詞 CNC 激光切割機床 結(jié)構(gòu) 設(shè)計 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