后者对加工过程也有影响，因为模具腔的寿命从典型的普通树脂零件大约1,000,000件减少到玻璃纤维填充树脂零件的约300,000件。
The latter also has an effect on processing since the life of the mold cavity is typically reduced from about 1,000,000 parts for plain resin parts to about 300,000 for glass-filled parts.
粉末冶金(图5.1)采用烧结工艺将金属粉末制成各种各样的零件。金属粉末放在封闭的金属腔(模具)中在压力下被压实。
Powder metallurgy (Fig. 5.1) USES sintering process for making various parts out of metal powder. The metal powder is compacted by placing in a closed metal cavity (the die) under pressure.
持续几十年的挑战之一是难于找到多型腔模具来生产一模一样的部件。
One that has persisted for years is the difficulty of getting multicavity tools to produce identical parts.
采用一般的平均收缩率方法来确定模具型腔的成型尺寸，已难以满足精密注塑成型制品的精度要求。
Using average shrinkage rates of injection-molded parts to decide the dimension of mold cavity can not satisfy the demand of high precision injection-molded parts.
持续几十年的挑战之一是难于找到多型腔模具来生产一模一样的部件。
One that has persisted for years (decades, actually) is the difficulty of getting multicavity tools to produce identical parts.
挤压速度、挤压毛坯的温度、型腔温度、模具的表面粗糙度以及挤压毛坯的化学成分是影响热挤压件表面质量的主要因素。
Extruding velocity, temperature of billet and container, die roughness and the chemical composition of the billet are the major factors which affect the surface quality of the extruded product.
针对大型、深腔、薄壁筒形件脱模较大，及要求成型后变形小的特点，采用气动的脱模方式进行了注射模具的设计。
Design the injection molding with pneumatic ejecting, so as to suit the injection molding with big ejecting force in deep mold and thin wall barrel.
分析比较了预绞丝螺旋线的特点和成型工艺，介绍了绞丝模具结构和型腔加工工艺。
The processes of corresponded moulds are introduced in order to analyze and compare the characteristic and the production process of mould of performed helix.
介绍了橡胶防尘罩多腔模具设计思路、产品取出及操作过程。
The design thinking of multi-cavity mold for the rubber dust cover, taking off and working process are introduced.
介绍了斜齿轮塑件注射成型模具的齿形型腔旋转式和斜齿轮塑件旋转式两类脱模机构设计。
The whirly demoulding mechanism designs of shape-gear and the whirly plastic parts of bevel gear injection mould were introduced.
以注塑模垫板的设计为例详细阐述，并与传统力学分析对比，为注塑模具的型腔设计提供了一种新方法。
Moreover, comparing to traditional mechanical analysis, this paper introduces the design of backing plate and provides a new method for the design of injection mold cavity.
简述了形状复杂的工具电极加工应采用CAD/CAM来完成和复杂形腔的模具可采用数控电火花加工。
The paper points out that it is necessary to use CAD/CAM for shape complicated tool electrodes machining; and NC EDM can be used for shape complicated dies.
气体辅助注塑成型工艺包含塑料熔体注射和气体注射两部分，由气体推致力塑料熔体充满模具型腔。
Gas assisted plastics injection molding process includes injection of polymer melt into mold cavity and then injection of gas-compressed into the polymer melt.
对O形圈模具型腔精确加工中的工艺、测量及加工偏差等几个关键问题进行了分析，并针对实例进行了计算机辅助设计。
The text analyses some key problems of accurately machining of O circle mould cavity, including its technology, measurement, and machining error, and then puts forward a CAD example for it.
其切削力平稳的特性更适合于模具型腔的高速数控加工，可以克服高速加工用刀具刚性差的不足。
The cutters used in high speed machining(HSM) have poor rigidity, therefore the method fits to HSM of die cavity due to the unfluctuating cutting force characteristic.
提出了通过显示奥氏体实际晶粒度、裂纹形貌和扩展方式来分析热锻模具型腔表层塑性变形行为的试验方法。
This paper advanced a study method that can observe plastic deformation behavior of surface layer of die cavity by showing austenite grain, size, crack morphology and propagation mode.
通过用注塑模CAE软件MOLDFLOW对塑件进行模流分析，选择聚丙烯的成型工艺参数，设计了一模一腔的注射模具。
An injection die with a mold cavity was designed though using the injection mold CAE software MOLDFLOW to simulate plastic flow and choosing the molding parameters of polypropylene.
适度增加激冷层厚度，提高激冷层品质，均匀喷涂并及时清理模具型腔，可减少气孔和夹杂物缺陷。
Gas hole and inclusion can be reduced by properly increasing thickness, and quality of the chilling layer, uniformly spraying and cleaning the mould cavity on time.
提出了模具型腔粗铣加工刀具组合方法，进行了粗铣加工走刀方式对比分析。
The paper offered the coarse milling machining combination methods of mold cavities, and contrasted and analyzed them.
模具的分型面是两模板接近型腔的那些部分，它们对接一起形成油封并且避免型腔里塑性材料的损失。
The parting surfaces of a mould are those portion of both mould plates, adjacent to the impressions, which butt together to form a seal and prevent the loss of plastic material from the impression.
根据渐开线齿轮的基础知识及粉末压制烧结理论确定了设计模具型腔及结构的原理和方法。
According to the requirements for the involute gear and powder metallurgy theory, the present article gives a principle and method for designing die cave and structure.
金属粉末放在封闭的金属腔(模具)中在压力下被压实。
The metal powder is compacted by placing in a closed metal cavity (the die) under pressure.
介绍了精密塑料小模数直齿圆柱齿轮模具型腔尺寸计算方法及成型工艺。
The cavity dimension calculation of injection mold of plastic small-module precision cylindrical spur gear and its molding technology are introduced.
因此，这里采用三次样条函数拟合曲线构造模具型腔廓线，其型值点由已有模具型腔测得。
So it adopt cubic spline function to structure die cavity outline in this article, the model points may be surveyed on die cavity surface.
在此基础上，设计制作了托辊轴承座双腔模具及CP-DMC模压料预压模具。
After studying on the molding technology, this paper designs a mould of bearing base and a mold for prepress of CP- DMC.
综合考虑了影响精密型腔模具成型产品零件尺寸公差的各种因素，提出了模具成型尺寸的多目标优化方法。
This paper discusses various factors which affect the dimensional torlerence of products of precise mould and offers a multi-object optimal method for designing cavity dimensions of precise mould.
介绍了塑胶模具复杂型腔采用CNCEDM的拷贝法和展成法加工技术，使镶拼式模腔改为整体式模腔；
Duplication and generation technologies with CNCEDM in machining complicated cavity of plastics dies, resulting in integral cavity instead of mosaic one, are stated.
采用加权曲面参数方程拟合型腔侧壁曲面的算法，实现了子午线轮胎活络模模具型腔曲面的构造。
Apply the weighted surface parameter equation to fit the algorithm of cavity lateral surface, and realize the cavity surface construction of radial parting mold of meridian tire.
斜导柱是型腔模具中典型的结构零件，对其实现自动化设计很有必要。
Since the Angle pin is a typical structural part of the mold, it is necessary to design automatically.
斜导柱是型腔模具中典型的结构零件，对其实现自动化设计很有必要。
Since the Angle pin is a typical structural part of the mold, it is necessary to design automatically.
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