(论文翻译 页数: 13 字数:5974)    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 数控鞋楦机的数字化逆向工程系统
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。

1 Introduction
In the global footwear industry, which has been China's footwear industry is. A short period of 10 years, China has risen remarkably, to the world's largest footwear producer and exporter. The rapid development of the footwear industry 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 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 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 traditional processing methods unable to establish workpiece size of the document, they can not do anything to modify the shape.
2 NC-shoe last two figures of reverse engineering system
Last CNC machine can be avoided mechanical shoe last machine shortcomings. 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 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 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 number of such reverse engineering system to meet modern shoe last is the development of the industry.