锻压技术

板料姿态多方位调整的数控渐进成形中成形顺序对成形质量的影响

英文标题：Influence of forming sequence on forming quality in CNC incremental forming with multi-directional adjustment of sheet posture

作者：朱虎李吉龙

单位：沈阳航空航天大学

关键词：数控渐进成形成形顺序成形质量板料姿态难成形面易成形面

分类号：TG335.5

出版年,卷(期):页码：2020,45(10):35-40

摘要：

在板料姿态多方位调整的数控渐进成形中，为研究难成形面和易成形面的成形顺序对成形质量的影响，以含难、易成形面的板材件模型作为研究对象，建立了先易后难和先难后易的两种成形顺序。采用这两种成形顺序进行了数值模拟和成形实验，对比分析了先易后难和先难后易两种成形顺序在轮廓尺寸精度和板材厚度分布方面对成形件的影响。数值模拟和实验结果表明：通过两种成形顺序得到的成形件在轮廓尺寸偏差分布上趋于一致，但采用先难后易的成形顺序成形得到的成形件有着更好的轮廓贴合度，具有相对更高的轮廓尺寸精度；而在厚度分布方面，两种成形顺序所获得的成形件差异较小，表明成形顺序对厚度方面的影响较小。

In order to study the influence of forming sequence for difficult forming surfaces and easy forming surfaces on the forming quality in the CNC incremental forming with multi-directional adjustment of sheet posture, for the sheet part model containing the difficult and easy forming surfaces, two forming sequences of easy-before-difficult and difficult-before-easy were established, and the influences of two forming sequences for easy-before-difficult and difficult-before-easy on the profile dimension accuracy and sheet thickness distribution of formed part were compared and analyzed by the numerical simulation and forming experiments. The results of numerical simulation and forming experiments show that the profile dimension deviation distributions of parts obtained by the two forming sequences tends to be consistent, but the parts formed by the forming sequence of difficult-before-easy have better profile fitting degree and higher profile dimension precision. However, in the aspect of thickness distribution, there is little difference between the formed parts obtained by the two forming sequences, which indicates that the forming sequence has little influence on the thickness.

基金项目：

辽宁省自然科学基金资助项目(2014024011)

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

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