锻压技术

基于反投影带垫板的网孔板数控渐进成形

英文标题：CNC incremental forming of mesh plate with pad plate based on backprojection

作者：朱虎冯辉

分类号：TG335.5

出版年,卷(期):页码：2019,44(2):67-73

摘要：

针对成形工具头直接对网孔板进行挤压存在的问题，提出了一种基于垫板的网孔板数控渐进成形方法。通过在网孔板上放置一张垫板，使成形工具头间接挤压网孔板，消除成形工具头和网孔板之间的摩擦力，进而避免网孔板产生划痕或破裂。此外，针对恒定层间距等高线成形轨迹不太适合网孔板平坦区域成形的问题，提出了基于反投影的等高线轨迹生成方法。在等高线轨迹比较稀疏的平坦区域，利用反投影方法插入等高线，使该区域的等高线轨迹稠密化，从而使该区域也能被均匀挤压。成形实验结果表明，基于反投影带垫板的网孔板数控渐进成形方法有助于提高网孔板的成形质量。

For the exist problem of extruding the mesh plate directly by forming tool head, the CNC incremental forming mesh plate based on pad plate was proposed. Then, the mesh plate was indirectly extruded by forming tool head through placing a padplate on mesh plate, and the scratches or rupture of mesh plate was avoided by eliminating the friction between forming tool head and mesh plate. In addition, aiming at the problem that the contour trajectory with constant layer distance was not suitable for the formation of flat area for mesh plate, the method of contour trajectory based on backprojection was proposed. Furthermore, the contour lines were inserted in a flat area by backprojection, where the contour trajectories were densely so that the area could be extrude evenly. The forming experimental results show that the CNC incremental forming method of mesh plate with pad plate based on backprojection can improve forming quality of mesh plate.

基金项目：

基金项目:辽宁省自然科学基金资助项目(2014024011)

作者简介：朱虎(1964-)，男，博士，教授 Email：zhuhu10@163.com

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