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.
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.
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.
然而，只用平衡式浇注系统特别是用到多型腔模具中不是一直可行的。
It is not always practicable, however, to have a balanced runner system and this particularly applies to moulds which incorporate a large number of differently shaped impressions.
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.
对多型腔模具设计来说，为保证各型腔制件的件重、性能等质量指标均匀一致，必须对浇注系统进行平衡分析，以使浇注系统流动平衡，即各型腔在相同压力下同时充满。
In order to guarantee uniform product weight and performances, flow balance of the runner system must be considered and all the cavities can be filled simultaneously under the same pressure.
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.
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.
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.
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.
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.
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.
为了减少收缩和塌陷，在填充前可以用气体给模具加预压，或者可以在非表观面与型腔表面之间注入气体。
For shrinkage and sink reduction, molds can be pre-pressurized with gas before melt is injected, or gas can be introduced between the non-appearance side of the part and the mold.
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.
该方法通过优化设计预成形模具形状，可实现精形终锻，得到无飞边、完全充满型腔和无折叠的终锻件。
This method can realize net shape forging by optimizing preform die shape. Flashless final forging with complete die fill and without folding-over defect can be obtained.
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.
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.
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.
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.
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.
内容包括型腔与浇道的排布、模具自动化、塑件质量与模具精度的关系等问题。
It includes the distribution of mould cavities and flow channel, the mould automation and the relation between the plastics quality and the mould precision, and so on.
橡胶O形圈的小批量生产，传统的方式主要使用O形圈单腔模进行，存在着生产效率低、生产过程中O形圈模具的型腔容易碰损而令模具失效等问题。
For small batch production of rubber O-Ring, one-hole dies are mostly used. But there are many problems. Such as low productivity, easy to be impact-damage, etc.
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.
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.
注射工艺过程就是从给料斗送进粉状或粒状的塑料混合物，经过定量区和熔化区，然后将其注射到模具型腔中。
The process consists of feeding a plastic compound in powdered or granular form from a hopper through metering and melting stages and then injecting it into a mold.
浇注系统是注塑模具结构设计中的一个重要组成部分，也是塑料熔体进入模具型腔的唯一通道。
Injection mould feed system is an important component of the structure design of injection mould, and is also the only channel for molten plastic flowing into mold cavity.
浇注系统是注塑模具结构设计中的一个重要组成部分，也是塑料熔体进入模具型腔的唯一通道。
Injection mould feed system is an important component of the structure design of injection mould, and is also the only channel for molten plastic flowing into mold cavity.
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