1、 Last scanner control system development 鞋楦扫描机的控制系统的开发 1 Introduction In the global footwear industry, which has been Chinas footwear industry is. A short period of 10 years, China has risen remarkably, to the worlds largest footwear producer and exporter. The rapid development of the footwear indus
2、try was driven by the shoe last industry, more and more shoe styles, and also requires constant renovation shoe last, which led to the shoe last from durable goods become consumables. Mechanical shoe last copying machine is used for processing principle, it implements the shoe last of the production
3、 process, bringing the shoe last, the rapid development of industry. But mechanical shoe last machine also has its inevitable drawbacks: First, from the product perspective, it processed by the upper sides of the shoe last, the more obvious Weijidao longitudinal marks, shoe last very smooth, as this
4、 request increasing the shoe-making industry, it is unable to meet the requirements of Secondly, mechanical machines in the shoe last of shoe last zoom, manual adjustment of the workforce to use their experience machines, which require workers relatively high； again, and most important, the traditio
5、nal processing methods unable to establish workpiece size of the document, they can not do anything to modify the shape. 1 引言 在全球制鞋业中，中国制鞋业可谓异军突起。短短的十多年，中国一跃升为全球 最大的鞋类生产国和出口国。制鞋业的迅猛发展也带动了鞋楦业，鞋子的样式越来越多，就要求鞋楦也要不断翻新，这促成了鞋楦从耐用品变成易耗品。机械鞋楦机采用的是仿形加工的原理，它实现了鞋楦加工的批量生产，带来了鞋楦业的飞速发展。但是机械鞋楦机也有其不可避 免的缺点：首先，从产品角度来
6、讲，它加工出来的鞋楦的鞋帮两侧，总有几道较明显的纵痕，鞋楦很不光滑， 这对于要求越来越高的制鞋业来说，是不能满足要求的；其次，机械鞋楦机在实现鞋楦的缩放时，需要工人凭经验手工调整机器，这对工人要求比较高；再次，也是最重要的，传统的加工方法无法建立工件尺寸的文件，也无法做任何的外形修改。 2 NC-shoe last two figures of reverse engineering system Last CNC machine can be avoided mechanical shoe last machine shortcomings. CNC machine using digita
7、l shoe last of the reverse engineering system, the digital system in the reverse engineering of the shoe last model 3D scanning, are three-dimensional model of data files, by addressing data file (such as dealing with a smooth surface, interpolation processing, etc.) Implementation of the shoe last
8、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 computer may need to tune out the same type of shoe last only one scan, management is very convenient. Clearly, the numb
9、er of such reverse engineering system to meet modern shoe last is the development of the industry. NC-figure 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 pract
10、ical 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 so
11、me reference. Last of the NC machines composed of two parts, part scanner, be it by scanning the shoe last three-dimensional data, and the other part is carved Last machine, which uses a three-dimensional scan data processing by the shoe last. This paper mainly discusses the shoe last scan machine c
12、ontrol 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 数控鞋楦机的数字化逆向工程系统 Zoom appearance code revision Last Model 3D Scanning Data Processing Computer-assiste
13、d analysis Construction of 3D model Computer aided manufacturing Rapid Tooling Last products 数控鞋楦机可以避免机械鞋楦机的缺点。数控鞋楦机采用数字化的 逆向工程系统，数字化的逆向工程系统在对鞋楦模型进行三维扫描后，得到模型的三维数据文件，通过处理数据文件（如表面光滑处理，插值处理等），实现对鞋楦模型的缩放，并能改变鞋楦加工表面的螺旋线的螺距，从而改善加工表面的质量。同时，所得数据文件可以存入电脑，需要时可再调出来，同一类型的鞋楦只需扫描一次，管理非常方便。显然，这样的数字化逆向工程系统才是满足现代鞋楦
14、业的发展的。数控鞋楦机的数字逆向工程流程图如图 1 所示： 图 1 数控鞋楦机的数字逆向工程流程图 国外的数控鞋楦机到目前为止已经非常完善了，在实际应用中也得到极大肯定。我们国内由于种种原因，起步较晚，所以笔者所在实验室在参考国外机器的前提下，以实际应用作为主要目的，进行数控鞋楦机的研制，为国内在该领域的企业提供一些参考。该数控鞋楦机有两部分组成，一部分是扫描机，它通过扫描得到鞋楦的三维数据，另一部分是刻楦机，它利用扫描得到的三维 数据加工出鞋楦。本文主要讨论鞋楦扫描机的控制系统设计，只有扫描得到的数据文件准确，才能保证加工出来的鞋楦的质量，因此鞋楦扫描机是实现鞋楦加工的基础和前提。 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
