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- To low drawing in flange part,the blank holder can be used as punch,and the effect is good. 对于凸缘部位的浅拉深,采用压边圈兼作浅拉深凸模的作用,取得较好的效果。
- Abstract: Blank holder structure and blank holder force （BHF） are very important to the part quality in deep drawing. 摘 要: 压边结构及压边力对板料拉深成形质量有着重要影响。
- The system is made of hydraulic press,rectangular box drawing die of divided blank holder,hydraulic part of blank holder and control part. 该系统主要由液压机、压边圈分区的矩形件拉深模具、压边装置的液压部分以及控制部分组成。
- It was shown that the contradiction between wrinkle and crack can be settled by flexible blank holder forming.The relation between crac... 而采用柔性压边多点成形方式可以有效避免起皱和拉裂,大大提高变形量,得到更好的成形结果。
- The segment blank holder with a multi-pin system was first designed to load the blank-holder force (BHF) independently in different area of a sheet. 首先设计了分块压边板，采用多点顶杆结构提供拉深所需的压边力，各个顶杆之间相互独立，可在板料不同的区域实现不同的压边力加载。
- The result shows that the blank holder force,which is capable of eliminating the outer crimple,is,however,insufficient to abate the... 结果表明,用正常消除外皱的压边力消除内皱作用微小,而增加压边力确实可以消除内皱。
- Pulsating blank holder forces are used in deep-drawing process to increase the draw depth and improve the surface quality of drawn piece . 采用脉动变化的压边力控制拉深工艺,可提高成形极限及拉深件的表面质量。
- Blank holder force(BHF) is one of the important parameters in deep drawing process of sheet metal,appropriate control of it can eliminate such defects as wrinkling and fracture. 压边力是板料拉延成形过程的重要工艺参数之一,合理控制压边力的大小,可避免成形件起皱或破裂等缺陷。
- Equalizers are spacer blocks mounted on either the blank holder surface or the die face that maintain a specific gap between the die face and blank holder surface. 平衡块是一些安装在压边圈或凹模型面上用来维持压边圈和凹模间的压边面间隙的垫片。
- Using finite element method (FEM) simulation, the blank holder force(BHF) for fracture is gained on the base of analysis of facture in different BHF and drawing depth. 利用有限元仿真模拟手段,以圆毛坯为智能拉深的研究对象,通过对不同压边力作用下对盒形件拉深进行破裂预测分析。给出了盒形件拉伸破裂的临界压边力规律。
- The simulation results show that the elastic cushion and the stepped blank holder can suppress the dimpling and wrinkling defects,leading to better parts with smooth surface. 分析了拼焊板多点成形过程中出现的压痕和起皱现象及其抑制方法，探讨了焊缝偏移的影响因素。
- In a non-rotational symmetry drawing, material of flange on blank holder face is the main body of deformations, and has direct effects on the formability of drawing. 非回转对称拉深成形过程中 ,压料面上法兰材料是变形的主体 ,直接影响到拉深成形性。
- Without these critical blocks, metal flow must be controlled through the use of blank holder pressure alone, which can present a serious problem with parts that are both wrinkled and torn. 没有这些关键的平衡块，通过施加压力在料片上来控制金属材料的流动，而正是这个压力导致零件严重地起皱和撕裂。
- The predominant failure mode in stamping of sheet metal parts are wrinkling and fracture , in general, these defects may be eliminated by appropriate manipulated the blank holder forces. 起皱和断裂是板料成形过程的主要失效模式,合理控制成形过程中压边力,可以消除这些缺陷,提高成形性能。
- The predominant failure mode in stamping of sheet metal parts are wrinkling and fracture, in general, these defects may be eliminated by appropriate manipulated the blank holder forces. 摘要起皱和断裂是板料成形过程的主要失效模式，合理控制成形过程中压边力，可以消除这些缺陷，提高成形性能。
- The result indicates that proper blank holder force and liquid pressure will help to reduce the occurrence of drawing defects and the application of hydroforming can get more uniform wall thickness. 研究结果表明,合适的压边力和液体压力能控制盒形件拉深缺陷的发生,采用液压拉深盒形件可获得更好的壁厚分布。
- Elastic rubber method and rigid blank holders were used to apply blank holder force with different methods. 对压边力的控制采用了弹性橡胶控制法和刚性直接控制法。
- Structure design and ma-terial choice of important parts such as the die,blank holder,etc.were stated in detail.Also,fine blanking clearance was analysed and selected. 详细阐述了光洁冲裁凹模、压边圈等重要零件的结构设计与选材,并对光洁冲裁间隙进行了分析和选择。
- variable blank holder force(VBHF) 变压边力
- drawing cam controlled blank holder 凸轮式拉延压料板
