模糊可靠性在压铸模斜抽芯机构设计中的应用

针对斜抽芯机构中斜拉杆的负荷有失效特点，分析了斜拉杆工作状态完好这一事件的模糊性的来源和模糊性以对其疲劳强度可靠性的影响，建立了斜拉杆工作状态完好这一模糊事件隶属函数的一般表达式及斜拉杆疲劳强度模糊可靠性的计算模型。     

验钞机配件注射模具设计

本文以PRO/E软件为平台,实现了对验钞机配件的3D设计。考虑到塑件的特点,确定了模具设计的特点,采用了：两板模、一模两腔、侧抽芯、侧浇口等机构完成模具设计。通过对验钞机配件的设计,掌握了3DCAD/CAM的使用流程,实现了在3D模型的基础上,实现了2D视图的自动生成。掌握了CAD数字化加工几何模型的过程,从而提高了效率和加工质量,缩短了生产周期。     

压铸模侧滑块延时抽芯机构的设计

在压铸模设计中,为了便于设计推出机构,开模时压铸件一般应留在动模。当压铸件结构特殊,需要侧向抽芯且对定模型芯的包紧力大于对动模型芯的包紧力时,可以采用侧滑块延时抽芯机构使压铸件在开模后留在动模,保证压铸生产的顺利进行。侧滑块延时抽芯机构构思巧妙,结构简单,且不增加压铸模的制造费用,对压铸模的设计有一定的参考价值。     

刚度可靠性分析在塑料模抽芯机构中的应用

运用可靠性设计原理,对塑料注射模常用的斜导柱式抽芯机构进行分析,提出了的地柱直径计算方法能在保证抽芯机构可靠性的前提下,提高模具的工作性能。     

嵌入式注射模的设计

根据塑件的结构特点,介绍了加嵌片的定模抽芯注射模的主要结构设计.动模部分放入的金属嵌片在合模过程中能准确地插入定模部分的滑块中是设计的关键所在.     

基于CAD/CAM的对讲机壳体注塑模具设计

以对讲机外壳为例,介绍了CAD/CAM软件环境下模具结构的设计过程,分析了塑件结构及成型工艺性能,重点阐述内外联合侧向分型与抽芯机构的方法及模具运行原理,实践证明,CAD/CAM软件的应用可以控制成型过程及制造缺陷,缩短模具设计周期。     

二腔四个方向抽芯的注塑模设计

本文论述的是塑料制品的注塑模设计，本设计的难点在于四个方面的侧抽芯，且一模两腔，这就使得其中一个方向不能用常规的侧抽芯。本文给出了详细的设计过程及装配图。     

热轧1580卷取机卷筒抽芯原因探究

本文介绍了1580热轧卷取机卷筒的机械结构和胀缩原理,重点分析了卷筒抽芯的主要原因,并探讨了有效避免抽芯的改善和预防措施。     

注射模小型抽芯机构的设计

详尽地介绍外壳类类塑件注射模设计生产中的几种简单灵巧的抽芯机构。     

基于UG的遥控器上下壳体注塑模设计

介绍以丙烯腈-丁二烯-苯乙烯三种成分组成的共聚物(ABS)为材料制备的遥控器壳体注塑模具设计过程。通过对遥控器壳体塑件的结构及成型工艺分析,提出一模两腔的注塑模具结构,并基于UG8.0软件对注塑模具中各个部件进行了系统的设计,尤其是镶嵌的成型零部件和侧向分型与抽芯机构的设计,实现塑件复杂结构的一次成型,使整套模具结构更加紧凑,提高了生产效益和经济效益。     

一种带抽芯金属型重力浇注装置的研究

为了适应实践教学和新产品开发与试制的需要,文中对金属型重力浇注装置及模具设计进行了研究。在装置上采用简单的机械结构使之方便手动操作,使该金属型重力浇注装置可以实现抽芯的功能。该金属型重力浇注装置具有操作简单方便、易于维护,并且制造成本低廉、模具设计制造周期短的特点。该装置除了适用于实践教学、新产品开发与试制外,特别适用于中小型企业的小批量铸件的生产和产品的试制加工。     

小径木梯形板抽芯下锯法出材率的优化设计

对小径木梯形板抽芯下锯法的出材率数学建模并进行优化设计分析,以证明其具有较高的出材率.结合实际生产条件分析影响小径木梯形板抽芯下锯法出材率的因素,证明此种下锯方法的合理性和可行性.首先,介绍了小径木梯形板抽芯下锯法的原理、板材加工方式和优势.其次,根据其下锯方法的关键和特征对小径木梯形板抽芯下锯法进行了数学建模,推导小...     

Markedness and its Interpretation in Language Use

Language markedness is a common phenomenon in languages, and is reflected from hearing, vision and sense, i.e. the variation in the three aspects such as phonology, morphology and semantics. This paper focuses on the interpretation of markedness in language use following the three perspectives, i.e. pragmatic interpretation, psychological interpretation and cognitive interpretation, with an aim to define the function of markedness.     

Features of Women's language

Language is a means of verbal communication. People use language to communicate with each other. In the society, no two speakers are exactly alike in the way of speaking. Some differences are due to age, gender, statue and personality. Above all, gender is one of the obvious reasons. The writer of this paper tries to describe the features of women＇s language from these perspectives： pronunciation, intonation, diction, subjects, grammar and discourse. From the discussion of the features of women＇s language, more attention should be paid to language use in social context. What＇s more, the linguistic phenomena in a speaking community can be understood more thoroughly.     

An Analysis of Catherine＇s Character——Wuthering Heights

Wuthering Heights, Emily Bronte＇s only novel, was published in December of 1847 under the pseudonym Ellis Bell. The book did not gain immediate success, but it is now thought one of the finest novels in the English language. Catherine is the key character of this masterpiece, because everybody and everything center on her though she had a short life. We can understand this masterpiece better if we know Catherine well.     

Lower Paleozoic oil relationships within Williston Basin, Canada

The Williston Basin is a significant petroleum province, containing oil production zones that include the Middle Cambrian to Lower Ordovician, Upper Ordovician, Middle Devonian, Upper Devonian and Mississippian and within the Jurassic and Cretaceous. The oils of the Williston Basin exhibit a wide range of geochemical characteristics defined as "oil families", although the geochemical signature of the Cambrian Deadwood Formation and Lower Ordovician Winnipeg reservoired oils does not match any "oil family". Despite their close stratigraphic proximity, it is evident that the oils of the Lower Palaeozoic within the Williston Basin are distinct. This suggests the presence of a new "oil family" within the Williston Basin. Diagnostic geochemical signatures occur in the gasoline range chromatograms, within saturate fraction gas chromatograms and biomarker fingerprints. However, some of the established criteria and cross-plots that are currently used to segregate oils into distinct genetic families within the basin do not always meet with success, particularly when applied to the Lower Palaeozoic oils of the Deadwood and Winnipeg Formation.