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- Keywords thin-walled rectangular tube;rotary draw bending process;wrinkling;numerical simulation;process parameter;deformation laws; 薄壁矩形管;绕弯成形;失稳起皱;数值模拟;工艺参数;成形规律;
- The die of NC tube bending is composed of bending die,clamp die,wiper die,pressure die and mandril. 导管数控弯曲模具包括弯曲模、夹模、压模、防皱模和芯棒。
- Adopting this method not only can analyze instantaneous strain condition and evolution during tube bending,but also can analyze deforming feature. 采用该方法不仅可以分析弯管成形过程瞬时应变状态及其演化过程，而且可以分析弯管成形过程变形特点。
- Further more,as a part of the research of foundational experiment,it enriches the systematical research of tube bending forming ... 同时,为管材弯曲成形机理研究作了相应的基础准备工作。
- Based on lots of tube bending experiments,the stress-strain state along the tangential direction of bending line and the direction of the wall thickness is analyzed. 通过大量管材弯曲试验,分析了沿弯曲线的切向和管壁厚方向的应力应变状态,给出弯管内、外侧管壁厚变化量和切向应变的近似计算公式。
- Moreover corresponding soft have been made by using rapid development-VC++ based on the triangle arithmetic.The DDP parameter have been used by semi-roboticized NC machine tool for tube bending. 通过运用VC++6.;0编制计算软件，选取三角形算法作为弯管数据转换的计算准则，系统软件求解出DDP数据，作为半自动化数控弯管机弯制管件的数据信息。
- The NC tube bending process is complicated,and the efficient management of its data forms an important foundation for achieving its precise formation digitization and process planning automation. 数控弯管工艺过程复杂,对数控弯管工艺数据进行有效管理,是实现数控弯管精确成形数字化和工艺规划自动化的重要基础。
- Numerical simulation of forming geometrical defect in the rotary draw bending with rear pulling force of aluminum alloy profile 铝合金型材张力绕弯成形几何缺陷数值模拟分析
- With good strength and toughness, it is mainly used for drawing dies for drawing tubes and rods. 具有优良的强度和韧性,主要用于制作管、棒拉拔用的拉制模具。
- This article presents the shape change of the cold tube bending,and the method of making tubes with ideal minor radius by choosing the mandrel and mastering right methods. 介绍了管子在冷态弯制时的变形情况，以及通过合理选择芯棒及掌握其正确的使用方法，达到弯制出理想小半径管件的方法。
- Analyzing problems regarding non-mandrel drawn tube processing with complex function is a quite new method in this regard. 利用复变函数解析空拔圆管问题是一种新方法。
- Design and Implementation of Tube Bending Die Drawing Library Management System 弯管模胎图形库管理系统的设计与实现
- Do you mind if I draw up the blinds? 我卷起窗帘你不反对吧？
- NC three-dimensional tube bending machine 数控立体弯管机
- rotary draw bending process 绕弯成形
- Suck on the tube to draw up the water. 用管子把水吸上来。
- A week later the top of this tube bends over, creating the basic structure of fore, mid and hindbrain . 一个星期之后，官顶端弯曲，形成了基本的大脑前、中、后期结构。
- The gardener asked me for a rotary lawn mower. 园丁向我要一台旋转式割草机。
- rotary draw bending 旋转拉伸弯曲
- hydraulic three-dimensional tube bending machine 液压立体弯管机
