成型

To provide methods for the study of laser rapid prototyping system based on polar coordinates, especially it apply to featheredge spheroid parts; The make-up of SLS rapid prototyping system based on polar coor.

本文基于激光变长线快速成型系统和激光点扫描快速成型系统的特征，激光选区烧结成型工艺因其适用于中小型零件，且选用材料广泛，对其研究具有现实意义；为基于极坐标系的激光快速成型系统的研究提供了素材，特别是对于薄壁回转体零件具有较强的针对性；详实地讨论了基于极坐标的激光选区烧结系统的组成。

This paper is designed Pull rod injection mould , discussed the basal principle injection mould, especially Double-surface injection mold design , Have introduced the molding handicraft injecting a mould detailedly、equipment Selection、 feed system、Pulling mechanism and molding part design process, As well as demanded an explanation for mold manufacturing technology, Finally draw out the mould picture by CAD software.

本模具毕业设计主要是设计塑料拔杆的注射模具，论述了注射成型的基本原理，主要是了解模具结构中最基本的两板模的设计，熟悉和掌握模具设计的过程，加深对塑料模具的结构和成型过程的认识。详细介绍了注射模具的成型工艺及设备选择、浇注系统、抽芯机构和成型零部件的设计过程，并对模具制造工艺要求做了说明，最后通过CAD软件绘制出模具图。

In virtue of the particularity of structure layer, the sample molding and design ways are different from the one for surface layer of mixes. Through parallel trial studying Marshall hit and circumrotate press molding, traditional Marshall design method and mechanics index method, the paper brings forward the molding and design method adapting to different types of ATBs.

由于其所处结构层的特殊性，试件成型方法、混合料设计方法均与沥青混合料面层有所不同，通过对比研究马歇尔击实成型和旋转压实成型、传统马歇尔设计方法和力学指标法，提出了适合不同沥青稳定碎石基层混合料类型的成型和设计方法。

In our research,we used PLGA ,a kind of biodegradable material,as the target.After studied the fabrication technology of mico toplogy of the drug carrier by low temperature and thermo pressure ,we developed the prototype machine and its process.

本论文以生物可降解材料PLGA为加工对象，以药物载体的微观拓扑结构的成型工艺为主要研究内容，以低温热压成型为主要工艺手段，开展了成型加工实验样机的研制开发和相应的成型工艺研究。

The molding principle of microcellular plastics used in Civil Aviation was summarized.

叙述了民航用微孔塑料成型的原理，并介绍了间歇成型、注射成型以及连续挤出成型的制备方法。

Low Temperature Wax Die Casting Molding is an important method, which is mainly applied to casting molding, you can wax casting precision plastic parts of complex shape.

低温模料模具成型是压铸成型的一种重要方法，它主要适用于铸件成型，可以通过腊模成型形状复杂的精密塑件。

The steps include selecting a mould, injecting low temperature hot melt materials, drying the low temperature hot melt material mould, taking out the low temperature hot melt material mould, coating with slurry and sand spraying, drying the sand mould, heating for allowing the low temperature hot melt materials to demould, casting and forming, destroying the sand mould, cutting and processing to obtain the finished product.

取一成型模具：该成型模具包括两个对合的半模，于成型模具内设有一螺旋转子的成型模穴及浇铸道；灌注低温热熔材：于浇铸道灌入熔融的液态低温热熔材，液态低温热熔材即填充于对合的两螺旋转子心轴模穴、及两转子螺旋部半模穴；干燥：液态低温热熔材干燥凝固，形成一具有螺旋转子外型的低温热熔材

Moreover, this paper emphasized to introduce the design of mouldstructure and mould parts, such as: feed system; guide outfit;ejection outfit; cooling system; the structure design, sizecalculation, processing program and so on .

重点对模具的结构设计和成型零件设计（如：浇注系统，导向机构及脱模机构，冷却系统，成型零件的结构设计，成型零件的尺寸计算，成型零件的加工程序等）过程作了详细介绍。

Moreover, this paper emphasized to introduce the design of mould structure and mould parts, such as: feed system; guide outfit; ejection outfit; cooling system; the structure design, size calculation, processing program and so on .

重点对模具的结构设计和成型零件设计（如：浇注系统，导向机构及脱模机构，冷却系统，成型零件的结构设计，成型零件的尺寸计算，成型零件的加工程序等）过程作了详细介绍。

Moreover, this paper emphasized to introduce the design of mould structure and mould parts, such as: feed system; guide outfit; ejection outfit; cooling system; the structure design, size calculation, processing technology and CNC program of mould part, etc.

重点对模具的结构设计和成型零件设计（如：浇注系统、导向机构及脱模机构、冷却系统、成型零件的结构设计、成型零件的尺寸计算、成型零件的加工工艺及数控加工程序等）过程作了详细介绍。

On the other hand, the more important thing is because the urban housing is a kind of heterogeneity products.

另一方面，更重要的是由于城市住房是一种异质性产品。

Climate histogram is the fall that collects place measure calm value, cent serves as cross axle for a few equal interval, the area that the frequency that the value appears according to place is accumulated and becomes will be determined inside each interval, discharge the graph that rise with post, also be called histogram.

气候直方图是将所收集的降水量测定值，分为几个相等的区间作为横轴，并将各区间内所测定值依所出现的次数累积而成的面积，用柱子排起来的图形，也叫做柱状图。