【正文】 4MHz脈沖頻率、 S 曲線減振功能、編碼器反饋、隨時(shí)變速等高級(jí)功能。由于是采集鞋楦三維的數(shù)據(jù)，采樣點(diǎn)越密集，加工出來的產(chǎn)品越光滑。 Optical grating feedback system DMC3000 encoder feedback signals No. Oaxis and the direction of the output pulse Section axis origin and spacing signal No. 1axis and the direction of the output pulse Various axis limit switch Caxis servo system Zaxis servo system No. 1axis encoder feedback signals No. 0axis encoder feedback signals 圖 3 控制系統(tǒng)總框圖 下面主要介紹運(yùn)動(dòng)控制卡，伺服電機(jī)以及光柵尺的選擇及控制。上位機(jī)作為掃描機(jī)的操 作界面，完成數(shù)據(jù)分析、處理以及對(duì)執(zhí)行機(jī)構(gòu)的控制等任務(wù)。 3 shoe last scanners scan Principle First, a brief introduction to the shoe last scanner scanning principle, as shown in Figure 2. Figure 2 shoe last scanners scan schematic As shown below, driven shoe last Xaxis of rotation, Yaxis is at the center shoe last, in the Zaxis length shoe last move, that is, the direction of mobile scanning round. Last scanner using contact measurement, measurement tools used for scanning round, it installed in the Yaxis direction, scanning round rely on the shoe last, behind by the pump withstand, scanning round of the campaign with the shoes before and after moving, behind the wheel grating scanning device data acquisition shoe last. 3 鞋楦掃描機(jī)的掃描原理 首先，簡要介紹一下鞋楦掃描機(jī)的掃描原理，如下圖 2 所示。數(shù)控鞋楦機(jī)的數(shù)字逆向工程流程圖如圖 1 所示： 圖 1 數(shù)控鞋楦機(jī)的數(shù)字逆向工程流程圖 國外的數(shù)控鞋楦機(jī)到目前為止已經(jīng)非常完善了，在實(shí)際應(yīng)用中也得到極大肯定。 2 NCshoe last two figures of reverse engineering system Last CNC machine can be avoided mechanical shoe last machine shortings. CNC machine using digital shoe last of the reverse engineering system, the digital system in the reverse engineering of the shoe last model 3D scanning, are threedimensional model of data files, by addressing data file (such as dealing with a smooth surface, interpolation processing, etc.) Implementation of the shoe last scalable model, and change the shoe last machined surface of the helix pitch, thereby improving the quality of surface machining. At the same time, the data files can be stored in puter may need to tune out the same type of shoe last only one scan, management is very convenient. Clearly, the number of such reverse engineering system to meet modern shoe last is the development of the industry. NCfigure shoe last reverse engineering flowchart in Figure 1 below: Figure 1 NC shoe last for the number of reverse engineering flowchart Last abroad NC machine has been very well so far, in the practical application has been greatly affirmed. Our domestic Due to various reasons, a late start, the author of the reference laboratory in foreign machinery under the premise of the practical application as the main purpose of NC Machine for shoe last for domestic enterprises in the area to provide some reference. Last of the NC machines posed of two parts, part scanner, be it by scanning the shoe last threedimensional data, and the other part is carved Last machine, which uses a threedimensional scan data processing by the shoe last. This paper mainly discusses the shoe last scan machine control system design, only by scanning the data files accurately, to ensure processing by the quality of the shoe last, shoe last scan machine of shoe last is the basis and premise for processing. 2 數(shù)控鞋楦機(jī)的數(shù)字化逆向工程系統(tǒng) Zoom appearance code revision Last Model 3D Scanning Data Processing Computerassisted analysis Construction of 3D model Computer aided manufacturing Rapid Tooling Last products 數(shù)控鞋楦機(jī)可以避免機(jī)械鞋楦機(jī)的缺點(diǎn)。短短的十多年，中國一躍升為全球 最大的鞋類生產(chǎn)國和出口國。 Last scanner control system development 鞋楦掃描機(jī)的控制系統(tǒng)的開發(fā) 1 Introduction In the global footwear industry, which has been China39。 again, and most important, the traditional processing methods unable to establish workpiece s