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Polyoxymethylene isone of five engineering plastics which has excellent combined properties, especiallyexcellent friction behavior, therefore widely be applied in rotation parts of mechanical,electric motors, electric appliance accessories.

聚甲醛是五大工程塑料之一,综合性能优异,尤其是摩擦磨耗性能优良,因此最适用于作机械、电动机、电子电器用零件的转动部位材料。

The results showed that the existence of porosity was main reason of parts failure.

结果表明:组织疏松的存在是造成零件失效的主要原因。

Based on the study of IGES; STEP, especially the study of DXF, a program interface is developed, by which the data can be shared among different CAD systems. According to the different Characters, the respective tool paths are designed. And by a machine configure file, the General postposition process is deal with. On the research of the general simulation technology that is based on the NC codes. By analyzing the characteristics of the CNC system and the NC codes, a set of general simulation interface is developed.

通过对IGES和STEP等产品数据交换标准的探讨,尤其是对应用广泛的DXF的深入分析,建立了与不同CAD系统实现数据共享的编程接口;根据零件的不同加工特征提出了相应的走刀路线,并通过机床配置文件,初步实现了通用后置处理;研究了数控系统和NC代码的特点,建立了仿真通用接口,并提出代码翻译地基本思路。

After postposition process, the graphics with parameters for parts machining can generate NC program automatically and the machining track can be simulated on the CNC system CTR.

具有参数的零件加工图形通过后置处理后,能自动生成加工所需的NC程序,并可以在数控系统CRT上进行加工轨迹模拟仿真等。

By the right analysis of the part of plastic pothook, designing a pair per mold tow the plastics molding tool of cavities .

摘要通过对塑料挂钩零件工艺的正确分析,设计了一副一模两腔的塑料模具。

High standards of mechanical parts of powder metallurgy products company.

高标准机械结构零件的粉末冶金制品公司。

This is a preview of Create custom powdered metal and plastic parts online instantly .

这是一个预览创建定制的粉状金属及塑胶零件线上即时。

This paper introduces the concept of automated intelligent tire design as basis, and then systemically presents the general framework of CAD 3-D digital tire model design platform. Its modules include the demand representation, demand preanalysis, product list generation, product list modeling, testing, tires knowledge-base and tire parts-base. The realizing process and key techniques of the product list modeling module are described, including calculation principle of groove section and groove modeling scheme ,and so on. This paper also introduces an improved algorithm of calculating groove centerline. Finally CATIA platform and VBA toolkit-based tire design system is established under detailed demand representation type.

在提出自动化智能轮胎设计概念基础上,系统地阐述了计算机辅助设计三维轮胎数字化模型开发设计平台的整体架构,包括需求表示、需求分析预处理、产品清单生成、产品清单造型、产品检验、轮胎知识库和轮胎零件库等模块;叙述了数字轮胎设计造型模块的实现过程和关键技术,包括花纹沟截面计算原理和各种花纹沟的造型方案等,同时,还提出了一种改进的计算花纹沟中心线的算法;最后基于CATIA三维造型平台和自动化语言VBA二次开发工具实现了在详细需求表示类型下的轮胎设计系统。

The best way to maintaining your bicycle parts is to carry out normal defensive and precautionary preservation.

最好的方法维护你的自行车零件,是进行正常的防御和预防性保护。

Then, the system life predication method and the Reliability distribution method of system is presented.

针对目前大部分零件的寿命试验数据都是在恒定交变载荷下取得的情况,结出了载荷相关的系统可靠性分析方法。

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Lugalbanda was a god and shepherd king of Uruk where he was worshipped for over a thousand years.

Lugalbanda 是神和被崇拜了一千年多 Uruk古埃及喜克索王朝国王。

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