1)precision forming精密成形
1.Designing of semifinished product for spur gear precision forming;齿轮精密成形精整毛坯设计
2.Principle of precision forming for sandwich panel of large antenna reflector;反射器夹层面板精密成形原理
3.It was presented that a new precision forming technology of car steering knuckle in this paper.文章提出了轿车转向节精密成形新工艺。
英文短句/例句
1.The Deformation Property of Casting AZ31 Mg Alloy and Precision Forming of Inner Spur Gear;连铸AZ31镁合金成形性能及内齿轮精密成形研究
2.The Digital Manufacturing Method of Engineering Composite Precision Forming;工程复合材料精密成形数字制造方法
3.PREDICTION OF NOOE SEPARATING FROM DLE IN TUBE AXIAL COMPRESSIVE PRECISION FORMING PROCESS管轴压精密成形过程中管坯脱模点的预测
4.Study on Warm Precision Forging of Spur Gears with Big Modulus and High Boss大模数高凸台圆柱直齿轮温精密成形技术研究
5.Simulation Study on the Characteristics of Medium Carbon Structural Steel during Semi-Hot Controlling Precision Forming;中碳结构钢亚热控制精密成形特性模拟研究
6.Technology Research on Warm Extrusion Process of Cutting Pick Body in a Coal Mining Machine;采煤机截齿刀体温挤压精密成形工艺研究
7.Study on New Obturated Extrusion Precision Forming Technology of Car Steering Knuckle;轿车转向节闭塞挤压精密成形新工艺研究
8.FEM Numerical Simulation of Precision Forming Process of Tube Inversion by Axial Drawing;拉伸翻管精密成形过程有限元数值模拟
9.Research on Gear Precision Forming Process and It s CAD/CAPP System;齿轮精密成形工艺研究及其CAD/CAPP系统开发
10.Study on the Precision Forming of HAI 60-1-1 Aluminum Brass Thrust Bearing BlocksHAI 60-1-1铝黄铜止推轴承座精密成形研究
11.Research on Precise Warm Extrusion of Pick Used in Engineering and Mining工矿及采矿用截齿温挤压精密成形工艺研究
12.Test Research on Chip Formation of Ultra-precision Turning超精密车削切屑形成过程的试验研究
13.Study on Optimization of Precision Die Forging Process of Automobile Crankshaft;汽车曲轴精密模锻成形工艺优化研究
14.Precise Extrusion Process of E Shaped Waveguide Component for Radar Use雷达用E弯波导体精密挤压成形工艺
15.A Study on Elastic Deformation Forecast Method for Precision Plastic Forming精密塑性成形弹性变形量预测方法研究
16.Magnesium Alloy Precision Die-casting and Mould Design & Manufacture;镁合金精密压铸成形工艺及模具设计制造
17.Study on Precision Forging Process and Die of Tiny-Automobile Cranshaft;微车曲轴精密锻造成形工艺及模具的研究
18.Modeling and Simulation of Scratches during the Process of Ultra-Precision Plane Grinding;超精密平面研磨划痕形成的建模与仿真
相关短句/例句
precise forming精密成形
1.The research and development of the digital precise forming system;数字化精密成形系统的研究与开发
2.In order to simulate the precise forming of a double curvature panel based on "nails die, vacuum and honeycomb sandwich" by the finite element method, a simplified mechanical model for the two forming phases is established.为了实现基于“点阵钉模、真空负压、蜂窝夹层”的双曲度面板精密成形过程的有限元数值模拟 ,分析了成形 2个阶段的变形过程 ,建立了简化的力学模形 ,以一种广义协调薄板弯曲四边形位移单元为基础构造了具有公共横向位移自由度的几何非线性四边形四节点分别考虑和不考虑横向剪切的多层板单元 ,通过牛顿 -拉斐逊法结合载荷、位移约束量的增量法求解几何非线性方程 ,较好地再现了真实成形过
3)plastic precision forming塑性精密成形
4)isothermal precision forming等温精密成形
1.Research on isothermal precision forming process of titanium blade wheel with finite volume method;有限体积法研究钛合金叶轮等温精密成形
5)precision plastic forming精密塑性成形
1.Research on precision plastic forming technology of rotor s with twist radial blades;带径向扭曲叶片转子精密塑性成形技术的研究
2.The precision plastic forming technology for the starting clutches is analyzed.分析了起动离合器的精密塑性成形工艺 ,选择了两步挤压成形法 ,确定了塑性成形工艺流程 ,并对模具设计制造的特点作了介绍。
3.Precision plastic forming is one of the latest trends of modern mechanical manufacturing technology.精密塑性成形技术是机械制造工艺的最新发展趋势之一,该项技术可使锻件的形状、尺寸和表面质量最大限度地与产品零件相接近。
6)precision body forming精密体积成形
1.Advanced design means was adopted to make reasonable design of the precision body forming parts (fine forging parts), the forging process and the die structure, make right selection of the die material, work out right forging rule and heat_treatment process for the die steel, and determine right mechanical machining process and processing precision, thus greatly extend the die.论述了精密体积成形(精锻)模具的寿命与模具设计制造的关系。
延伸阅读
精密外罩的成形工艺及模具摘 要: 分析了外罩的工艺性能和材料性能，叙述了精密外罩的成形工艺及其模具结构。关键词: 精密外罩;成形工艺;模具结构1 引言 图1所示零件是某型号仪表外罩，其材料为铁镍合金1J50。在型号生产中，该外罩件制造一直是使用棒料车加工成形，原材料浪费大，生产效率低，经济成本高。大批量生产要求使用模具引伸成形后再车加工成形，以提高生产效率，降低成本。 该外罩零件采用厚1.5-0.11mm板料冲压制造的工艺流程是:落料-引伸成形-车切止口。其中的引伸成形在研制试模中，容易发生底部破裂，表面划伤严重，内外圆的尺寸误差大、圆度低，后续车加工止口困难。针对性地从引伸工艺和模具结构两方面进行分析、准确计算、改进是保证精密外罩件引伸成功的关键。2 引伸工艺分析2.1外罩的工艺性分析 图1所示杯形外罩件，筒壁厚1mm，底部圆角半径R3，圆筒内外圆的直径公差分别是ITI2、ITI0级，均高于ITl3级(引伸件横断尺寸公差，一般都在ITI3级以下)，内外圆的形状误差是由尺寸公差控制的，分别是10级、8级(GB1184-80)的车加工要求;口部车加工止口,尺寸精度高、车加工余量小；内外圆的表面粗糙值低，质量要求高。 精车加工要求的外罩件尺寸精度高，表面质量要求高，引伸成形的难度大，需要进行准确的工艺计算，合理的结构设计;内外圆的尺寸公差难以保证，需要后续工序整修。2.2 外罩件的材料分析 图1所示外罩件材料为1J50的铁镍软磁合金，主要合金元素镍含量为50%，由于镍元素的导热性差、亲合性强，导致该合金材料在引伸过程中产生热积瘤粘模而划伤零件表面。 从表1可知1J50材料，在冷硬态和软态的力学性能相差较大，冷硬态的屈强比值(0.875)大，延伸性能差;在软态下的屈强比值(0.326)小，延伸性能好。实践表明该材料极易产生冷作硬化，冷硬状态下拉伸成形是造成底部破裂的主要原因。 因此，首次引伸前就应对毛坯件进行软化热处理，提高材料的塑性，同时采用良好的润滑措施，减小引伸过程中的摩擦，克服粘模和底破裂的现象。
