基于立式加工中心第四轴加工的鞋楦刀位点计算及其仿真系统设计（本科毕业论文设计）.doc

摘 要

鞋楦是鞋的母体，是鞋帮样设计、鞋底部件、鞋的成型模具设计以及制作鞋和固定鞋造型的依据。我国大多数制鞋企业还是采用手工制作样楦和简单的拷模加工方式，成本高、周期长、质量差。数控加工中心采用四轴加工可较快地直接制取母鞋楦。鞋楦刀位点计算、数字仿真系统的开发是鞋楦数控加工的关键步骤，将影响着鞋楦数控加工的加工质量、加工效率和加工精度。本课题研究鞋楦数控刀位点计算及其仿真系统的开发，采用软件系统对测量后的处理数据进行处理得出鞋楦刀位点数据，然后根据刀位点数据通过仿真软件对鞋楦表面进行CAM仿真，大大节约了加工费用，也大大降低了操作人员技术水平的要求。
本文首先概述了国内外鞋楦设计和制造的现状。随后，论文采用离散法造型技术，根据鞋楦测量后的处理数据构建出鞋楦三维模型。论文对鞋楦数控加工原理进行了深入分析，提出了三轴联动螺旋进给加工方法。论文接着阐述了鞋楦刀位点算法中的最小距离法，通过C++ Builder 6.0工具软件开发出了鞋楦刀位点算法软件，得出刀位点数据，提高了算法效率。
本文最后介绍了鞋楦数字仿真技术并对所获得的刀位点进行了数字仿真，结果表明刀位点算法正确，刻楦精度和质量也得到了保证，然后通过C++ Builder 6.0工具软件开发出了鞋楦仿真系统，通过鞋楦刀位点数据得出鞋楦表面仿真数据。


关键词：鞋楦，数控加工，刀位点算法，仿真系统












ABSTRACT

Lasts are the shoes parent substance, and they are the basis of the uppers of shoes type design, the shoe sole parts, the shoes takes shape the mold design as well as the manufacture shoes and the fixed shoes model. Our country mostly notational shoes enterprises use the manual system and simple beat-processing to produce the shoe last, as the result, the cost is high, the cycle is long, and the quality is poor. NC 4-axis machining center used to be faster made directly from the mother lasts. The lasts NC-point calculation, and the development of last digital simulation system are always essential steps of the numerical control processing to shoe last, are always affecting the numerical control processing quality of last, the processing efficiency and the processing precision. The study of the subject that development of calculation and simulation system for lasts NC-point uses the software system to carry on processing to the survey data to obtain the lasts NC-point, then carries on the CAM simulation according to the lasts NC-point through simulation software to the surface of last, greatly saved the processing charge, also greatly reduced the operator technical level request.
This article first outlines the domestic and foreign last designs and the manufacture present situation. Afterwards, the paper uses the separate method model technology and constructs lasts three-dimensional model according to the last survey data. The paper has carried on the thorough analysis to the numerical control processing principle of last, proposes the three axle linkage spiral precession and gives the processing method. Then thesis expounds lasts knife-point algorithm for the smallest distance, through C + + Builder 6.0 software development tools lasts a knife-point algorithm software, Lasts through the surface measured data knife-point data and increase the efficiency of the algorithm.
This article finally introduces the shoe last digital simulation technology and to the lasts NC-point which obtains has carried on the digital simulation, The results show knife-point algorithm is correct, last carving precision and quality has been guaranteed, then finishes the shoe last simulation system through C++ Builder 6.0 tools software, obtained the last superficial simulation data through the lasts NC-point data.
Key words：shoe last, numerical control processing, knife position spot algorithm, simulation system


目录

摘 要 I
ABSTRACT II
1 绪论 1
1.1 鞋楦概述 1
1.2 国内鞋楦设计制造及研究现状 1
1.3与课题相关的CAD/CAM技术 4
1.4 课题研究背景及意义 6
1.5 本课题主要研究内容 7
1.6 本章小结 7
2鞋楦刀位点计算 8
2.1鞋楦数控加工原理 8
2.2 鞋楦刀位点算法 9
2.2.1 铣刀的设计 9
2.2.2 最小距离法 9
2.2.3 空间坐标系的建立 10
2.2.4刀位点逼近方法的确定 11
2.2.5 有效投影范围的确定 12
2.2.6 刀位点的确定[10] 12
2.3 刀位点算法的实现 14
2.4 本章小结 15
3鞋楦刀位点仿真 16
3.1 鞋楦的三维模型 16
3.2鞋楦刀位点数控仿真算法 17
3.2.1 空间坐标系的建立 17
3.2.2刀位点有效范围的确定 18
3.2.3仿真离散数据点的确定 18
3.3鞋楦刀位点数控仿真算法实现 21
3.4本章小结 21
4 总结 22
参考文献： 23
附 录 24