As a result , the mould manufacturing time was shortened , and mould cost also reduced 然后用此锌合金凸模浇注塑料制品生产用的锌合金铸型。
Tools for pressing - ball - lock punch retainers - part 2 : types c and d , reduced for light duty 冲压工具.球形闸门凸模固定板.第2部分:小功率用c和d型
This paper studies the influence of both punch shape and constructivetechnological factors as well as the compressive and tensile stresses on the endurance of cold extrusion punches 研究了凸模形状、结构-工艺因素、压应力和拉应力对冷挤压凸模耐用度的影响。
Abstract : this paper studies the influence of both punch shape and constructivetechnological factors as well as the compressive and tensile stresses on the endurance of cold extrusion punches 文摘:研究了凸模形状、结构-工艺因素、压应力和拉应力对冷挤压凸模耐用度的影响。
In the paper , the forming limits in hemispheric punch bulging processes of aluminum alloy ly12 ( m ) , lf21 and steel stl7 are predicted by the ductile fracture criterion and calculation method of material constant advanced by the author 本文应用作者提出的韧性断裂准则及材料常数的确定方法预测了铝合金板和钢板的半球形凸模胀形的成形极限。
Abstract : the shapes of non - circular punch and matrix are processed by transferring an arc into a polygon . the method for dies cad system is introduced , which can generate the main view automatically based on the vertical view 文摘:介绍了在冲模cad系统中，采用圆弧多边形化的方法，对非圆凸模和凹模形状进行处理，提出了一种根据俯视图自动生成主视图的方法。
The springback angle increases with the increase of the punch round radius and clearances between the punch and the die while decreases with increase of the blank holder force , sheet thickness , friction coefficient and material hardening exponent 回弹角随凸模圆角半径和凸凹模间隙的增大而增大，随压边力、板料厚度、摩擦系数和材料硬化指数的增大而减小。
This paper studied friction stress distributed in processes of punch bulging , and deduced theory formula , the phenomenon about asymmetric reformation in processes of punch bulging is explained with the formula 摘要从理论上研究了球形凸模胀形过程中正应力和摩擦应力沿子午面( )方向的分布状况，进行了理论推导，根据推导结果对凸模胀形过程中出现的变形不均现象做出了解释。
In different in terne die travel , the metal flow characterize in warm extrusion forming processes and the affection for the flow of metal stage which made by the difference between the blank bottom altitude and the axial direction limiting size in warm extrusion forming technique have been analysed we have gotten the equivalent strain field and the velocity field and other field variable that the blank in different in terne die travel and the die travel - load curve . . at the same time , we have analyzed the contributing factor for the oil pump stator forming process optimized and achieve thereasonable die parameter for the war m extrusion forming finally , the optimized technics parameters were used into pilot production , then the qualified oil pump stator forging were produced , the analog results were compared with those of pilot production 论文具体分析研究了不同成形工艺过程中金属流动的特点，并对不同凸模行程下温挤成形过程中的金属流动特点、坯料连皮厚度(底部高度)与温挤压成形工艺中的轴向界限尺寸的差值对金属变形阶段的影响进行了分析，获得了坯料在不同凸模行程下的等效应变场、速度场等场变量及凸模行程-载荷曲线，同时对油泵定子成形过程的影响因素等进行了分析，优化并获得了合理的温挤成形工艺及模具参数。最后，利用模拟优化获得的各项工艺参数进行生产实验，得到实际生产出的合格油泵定子件，并将模拟结果与生产实验结果进行比较。
