It realized the transformation of solid model into midplane model in injection molding simulation by means of alternative algorithm of MAT and developed corresponding program module.
本文采用一种中轴变换的替代算法，实现了注塑模拟分析中实体模型向中面模型的转化，建立了相应程序模块。
The glass mat for FRP surface has a fiber dispersion, smooth surface, soft hand-feeling, low binder content, fast resin impregnation and good mould obedience which make it most applicable to other FRP molding processes such as press moulding, spray-up, centrufugal rotating moulding.
特有的生产工艺，决定其具有表面平整纤维分散均匀，手感柔顺，透气性好，树脂浸透速度快等特点。表面毡产品适用于玻璃钢手糊成型，缠绕成型，拉挤型材，连续平板等工艺。
Product features The glass mat for FRP surface has a fiber dispersion, smooth surface, soft hand-feeling, low binder content, fast resin impregnation and good mould obedience which make it most applicable to other FRP molding processes such as press moulding, spray-up, centrufugal rotating moulding.
玻璃纤维表面毡 Glassfiber surface mat 特征：特有的生产工艺，决定其具有表面平整纤维分散均匀，手感柔顺，透气性好，树脂浸透速度快等特点。表面毡产品适用于玻璃钢手糊成型，缠绕成型，拉挤型材，连续平板等工艺。
Among them, the mechanical structure, the configuration of hardware and software, the specification parameter and the environmental request of LK G90CS15.10.8 thiee-CMM mat are used in this thesis are introduced specially. By using LK G90CS15.10.8 three-CMM, the measuring data of the telephone hand-receiver are acquired. The types and the processing methods of measured data are discussed. Aiming at the error points in points data, a method using Coons surface is put forward. Filtration is commonly used in data smoothing, and median method is adopted in this article. Moreover, the chord method and the curvature method are used here to compress the data and extract the feature points of the telephone hand-receiver measured data. The developing process of surface molding is introduced and the formation algorithm of free-form surfaces is compared By using NURBS algorithm in mis article, the telephone hand-receiver surface is reconstructed. In addition, the surface of the telephone hand-receiver is cut according to the feature curve created by the feature points. The craft of numerical control machining program of complex surface is analyzed and compared. These craft are machining method, cutting dosage, machining remainder, cuter walking mode, the cuter advance, the retreat mode, programming zero, and machiningcoordinate so on. The conclusion that the layer cutting is fitter for rough machining is made. The formula of scallop-height method controlling machining step is deduced. Finally, the cutting and cutter parameter for rough machining and finish machining of complex surface is put forward in the MasterCAM software, according to which the cutter route for rough machining and finish machining are produced respectively.
本论文的主要工作在以下几个方面：分析与比较了目前常用的数字化测量方法及各种三维数字测量设备，着重介绍了本课题所用到的LK G90CS15.10.8型三坐标测量机的机械结构、软硬件配置、规格参数及环境要求，并用该机器对某电话机听筒外壳的三维表面进行扫描测量；阐述了反求工程的测量数据类型及各种数据点的处理方法，提出了利用Coons曲面原理剔除噪声点的方法，采用中值滤波方法对测量数据进行平滑，提出了用弦高差等方法和特征曲率法对电话听筒外壳数据进行了数据点的精简和特征点的提取的方法；论述了曲面造型技术的发展过程，比较了自由曲面和各种生成算法，应用NURBS算法重构了电话听筒的外壳曲面，并利用特征线对生成曲面进行了裁剪；分析比较了复杂曲面数控加工的切削方式、切削用量、走刀方式进退刀方式、编程零点和加工坐标系的确定，推导出用残留刀痕法来控制加工步长的关系式，阐述了在MasterCAM环境下如何选定待加工曲面的切削参数和刀具参数，并根据所选刀具和切削参数分别生成了电话听筒外壳型面的粗加工和精加工过程的刀具路径。
Effect of Operation Parameters on Flow Molding of Glass Mat Reinforced Thermoplastics
操作参数对玻纤毡增强复合材料流动成型的影响
Flow behavior of glass mat reinforced polypropylene in compression molding
玻纤毡增强聚丙烯模压成型的流动行为
Name of Product: Needled glass mat for pultrusion, RTM, molding, sandwich pressing.
产品名称：玻璃纤维拉挤，RTM，模压，层压专用针刺毡。