根据上限原理建立了一种变薄拉延过程的上限模型，。
An upper-bound model with two pseudo-independent parameters is formulated for ironing process.
介绍了基于型面模板的覆盖件拉延模型面快速设计过程。
The shape surface template based on fast design procedures of mold surface of the drawing die for outer panels is introduced.
本文介绍了汽车覆盖件模具设计中拉延模与修边模的设计。
This paper introduces the drawing die and the fixing side die of automobiles covering parts.
但对成形量小的浅拉延件，传统的圆网格法已不能满足要求。
Nevertheless, traditional circular grid method is no longer applicable for shallow stretching components with small forming capacity.
该方程显示拉延油的运动粘度与温度呈高度显著的指数关系。
The equation reveals that there lies in an exponential relationship between the viscosity and the temperature.
这种方法可以制造各种塑料模具和多种拉延模具、冲压模具等。
The technique can be used for making plastic moulds, drawing moulds, forming moulds, dies and so on.
该拉延油含有油性剂、极压剂、防锈剂、清洗剂等多种添加剂。
The developed drawing oil contains some oiliness additive, extreme-pressure additive, antirust additive and cleanout additive.
首先分析了左后悬挂架成形特点，决定采用两步拉延方式完成成形；
In this paper, the forming characteristics of left-rear hanger are analyzed at firstly and two-stage drawing pattern is adopted.
本文设计的是汽车发动机罩外板冲压模具第一工程所使用的拉延模。
This is the engine cover design, board stamping dies used in pulling one engineering service modules.
建立了考虑板料中性层偏移、包辛格效应等因素的拉延筋解析模型。
The paper suggested a draw bead model in which Bauschinger effect and incline of neutral layer were taken into account.
通过对其拉延成型过程中，金属的应力应变的分析，提出了防皱措施。
Measures for avoiding wrinkle has been considered after analysing the stress and strain of metal during drawing process.
采用一次拉延成型，并在其底部预冲工艺孔，可控制径向应力的大小。
The drawing process for producing the part is completed in one operation, and a hole for machining use is pre-punched to control the magnitude of radial stress.
运用有限元模拟软件对不锈钢带凸缘半球面形件进行了拉延过程模拟。
The forming process of drawing of stainless steel flanged hemisphere-shaped workpiece is numerically simulated and analyzed by using the FEM simulation software.
本论文工作正是国内首次对于热轧拉延钢板所进行的成功的实验室研究。
This thesis introduces the research work of hot-rolled drawing steel sheet which is first developed successfully in China.
合理布置拉延筋是汽车覆盖件成形中控制冲压件成形质量的主要手段之一。
Proper layout of draw bead is one of the key ways on controlling forming quality of ram parts in automobile panel formation.
研究了双曲扁壳覆盖件的成形机理及回弹特点，分析了双曲度拉延回弹机理。
This study investigates the mechanism of both forming process and springback of the draw formed panel with double curvature.
作者阐述了面向功能的覆盖件拉延模设计基本原理，提出了功能组件的概念。
The basic principles of function-oriented CAD for panel drawing dies are presented, and the concept of functional group components is brought forward.
本文介绍了自行研制的双金属板材拉延成形的CAD系统，并给出了设计实例。
The CAD system for the drawing of the bimetal sheet was introduced and an example was also given.
以轿车车门里板为例，对比传统拉延工艺，论述了新工艺的现实意义和优越性。
Taking the door rear inner of the vehicle for example, it shows that the new forming technique has much more advantage than the traditional technique.
通过拉延筋基本单元模拟试验，揭示了板料在拉延筋内的变形机理和变形特点；
By means of drawbead unit simulation experiment, the deformation regularity and characteristics of sheet metal in drawbead have been revealed.
组元金属之间不均匀的塑性变形是导致组元金属在拉延过程中产生缺陷的主要根源。
The defects of the component metal during drawing results from the inhomogeneous plastic flow between the two component metals.
通过事例检索，设定了工艺补充面形状、拉延筋排布位置以及冲压方向等工艺参数；
The complementary surface is built through the method of index of similar event , the position of draw bead and stamping direction and others process parameters are made certain at the same time.
控制材料均匀流动，是覆盖件拉延模设计的中心环节，也是影响覆盖件产品开发的重要因素。
The uniform flow of material is the key to the design of panel drawing die, and also the key factor for the development of panel products.
拉延工艺设计主要包括冲压方向调整、压料面和工艺补充部分的设计以及拉延筋布置等工作。
The drawing process planning was mainly referred to the adjustment of press direction, the design of binder face and addendum as well as the layout of draw beads.
为了实现匀流，在拉延设计中，通常要采取对称化处理，即成双冲压，就是将对称件合在一起拉延。
To enable a uniform flow, a symmetrical layout, or double stamping, is often adopted in the drawing die design, which forms symmetrical parts together.
采用复合形法对多连杆机构进行了优化设计，并对拉延压力机工作机构的机构优化参数进行了计算。
Based on the above analysis, the kinematical analysis and optimization design of multi-linkage of press operating mechanism are studied in this paper.
首先建立零件的拉延模型，从冲压方向、工艺补充面、压料面、坯料初始形状等方面进行设计分析。
Firstly, the stamping model of the part is built, and the design is focused on drawing direction, shape of addendum and blank-holder surface, initial shape of blank, and so on.
针对工厂的实际工作方式、工作内容进行系统开发，是开发汽车拉延模标准件库及特征库的指导思想。
Standard part and feature library system development for automobiles 'draw dies should be based on the actual work manners and work contents.
覆盖件拉延模设计制造周期的长短和质量对新车型的开发周期、汽车产品的质量和竞争力有着直接影响。
The design and manufacturing time and quality of panel dies have direct effect on the development period, quality and competitive capability of new car.
覆盖件拉延模设计制造周期的长短和质量对新车型的开发周期、汽车产品的质量和竞争力有着直接影响。
The design and manufacturing time and quality of panel dies have direct effect on the development period, quality and competitive capability of new car.
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