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首页> 外文会议>International Conference on Metal Forming >Motion-Controlled Precise Stamping for Microtexturing onto Aluminum Sheet
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Motion-Controlled Precise Stamping for Microtexturing onto Aluminum Sheet

机译：运动控制的精确冲压在铝板上的微张节

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Mass production of heat radiation devices requires for fine stamping of micro-textured patterns in the order of micro-meters in dimension onto the sheet product. In this duplication of micro-textured patterns, an original mother micro-pattern in the convex type has to be transferred onto the metallic sheet in the concave type with sufficient accuracy. The authors have proposed a micro texturing of original micro patterns onto the DLC coated mother die- and mold-unit. Once this unit is inserted and fixed in the stiff cassette die-set, the CNC-controlled stamping system works well for progressive stamping process to duplicate the original micro-patterns onto aluminum sheet. In the present paper, two kinds of motion in the stamper were designed to investigate the effect of loading and unloading sequences on the geometric accuracy in micro-texturing. Both the macroscopic and microscopic plastic deformations were described by SEM observation. First, high density oxygen plasma etching method was introduced to explain how to fabricate the micro-textured DLC-die unit. The constant-load motion control was employed as a normal motion in CNC-stamping to describe the microscopic metal flow by piercing the DLC micro-punch into the aluminum sheet. Deep micro-cavities with 3.5×3.5×3 μm~3 were successfully formed by application of high pressure in stamping. The pulse-wise motion control was further used to improve the geometric accuracy in the present duplication of original micro-texturing pattern onto the aluminum sheet. Owing to the incremental loading in this motion control, the micro-friction was significantly reduced to activate the microscopic metal flow in formation of micro-cavities.
机译：散热装置的大规模生产需要按尺寸的微米尺寸的微纹理图案精细印刷到片材产品上。在这种微纹理图案的重复中，凸型中的原始母图案必须以足够的精度将凸型中的金属片转移到金属片上。作者提出了一种在DLC涂覆的母模和模具单元上的原始微观图案的微纹理化。一旦将该单元插入并固定在硬磁带模具上，CNC控制冲压系统适用于逐行冲压过程，以将原始微观图案复制到铝板上。在本文中，设计了两种在压模中的运动，以研究加载和卸载序列对微纹理中的几何精度的影响。通过SEM观察描述了宏观和微观塑性变形。首先，引入了高密度氧等离子体蚀刻方法来解释如何制造微织地用DLC模具单元。恒定负载运动控制作为CNC冲压的正常运动，以描述通过将DLC微冲入铝板中的微观金属流动来描述微观金属流动。通过在冲压中施加高压成功地形成了3.5×3.5×3μm〜3的深微腔。脉冲明智运动控制还用于提高原始微纹理图案的本复制中的几何精度在铝板上。由于该运动控制中的增量负载，微摩擦显着降低以在形成微腔中激活微观金属流动。

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