锻压技术

面向板料姿态多方位调整式数控渐进成形的成形轨迹生成

英文标题：Forming toolpath generation for CNC incremental forming based on sheet posture multi-directional adjustment

作者：朱虎李吉龙

单位：沈阳航空航天大学

分类号：TG335.5

出版年,卷(期):页码：2020,45(8):56-61

摘要：

为了解决大成形角板材件的数控渐进成形问题，提出一种面向板料姿态多方位调整的成形轨迹的生成方法。研究出通过板料姿态面与刀位面求交方式生成出能够调整板料姿态面的成形轨迹生成算法，并利用C++语言在Windows 7环境下完成了算法实现，并给出了算法应用实例。算法应用实例表明，该算法能够生成出可应用于板料姿态多方位调整的成形轨迹。最后，采用实际成形实验，对所提板料姿态多方位调整的成形轨迹生成算法进行了验证和评估。实验结果表明，该成形轨迹在数控渐进成形中能够多方位调整板料姿态，使得包含有大成形角的板材件能够顺利成形，最大厚度为0.872 mm、最小厚度为0.204 mm、平均厚度为0.729 mm。

In order to solve the problem of CNC incremental forming for sheet with large forming angle, a generation method for the forming toolpath based on sheet posture multi-directional adjustment was proposed, and the generation algorithm of forming toolpath generated by intersecting the sheet posture surface with the cutter location surface which could adjust the sheet posture surface was studied. Then, the algorithm was implemented in the Windows 7 environment by C++ language, and the application examples of the algorithm were given. The examples show that the algorithm can generate the forming toolpath which can be applied to the sheet posture multi-directional adjustment. Finally, the generation algorithm for the forming toolpath of sheet posture multi-directional adjustment was validated and evaluated by the actual forming experiment. The experimental results show that the forming toolpath can adjust the sheet posture in many directions during the CNC incremental forming to form the sheet with large forming angle successfully. The maximum thickness is 0.872 mm, the minimum thickness is 0.204 mm and the average thickness is 0.729 mm.

基金项目：

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

参考文献：

[1]Behera A K, Sousa R A D, Ingarao G, et al. Single point incremental forming: An assessment of the progress and technology trends from 2005 to 2015[J]. Journal of Manufacturing Processes, 2017, 27: 37-62.
[2]Leacock A G. The future of sheet metal forming research[J]. Materials and Manufacturing Processes, 2012, 27(4): 366-369.
[3]Cao T T, Lu B, Xu D K, et al. An efficient method for thickness prediction in multi-pass incremental sheet forming[J]. The International Journal of Advanced Manufacturing Technology, 2015, 77(1): 469-483.
[4]Li J C, Li C, Zhou T G. Thickness distribution and mechanical properties of sheet metal incremental forming based on numerical simulation[J]. Transactions of Nonferrous Metals Society of China, 2012, 22(S1): 54-60.
[5]朱虎, 鞠晋, 白金兰. 基于倾斜轨迹的数控渐进成形厚度均匀化方法[J]. 计算机集成制造系统, 2018, 24(3): 631-638.
Zhu H, Ju J, Bai J L. Thickness homogenization method for CNC incremental forming based on inclined trajectory[J]. Computer Integrated Manufacturing Systems, 2018, 24(3): 631-638.
[6]Vanhove H, Gu J, Sol H, et al. Process window extension for incremental forming through optimal work plane rotation[A]. 10th International Conference on Technology of Plasticity, ICTP[C]. Aachen, Germany, 2011.
[7]Tanaka S, Hayakawa K, Nakamura T. Incremental sheet forming with direction control of path planes[A]. 10th International Conference on Technology of Plasticity, ICTP[C]. Aachen, Germany, 2011.
[8]Liu J, Mo J H, Huang S H. Sheet metal dieless forming and its tool path generation based on STL files[J]. The International Journal of Advaned Manufacturing Technology, 2004, 23(9): 696-699.
[9]Zhu H, Liu Z J，Fu J H. Spiral tool-path generation with constant scallop height for sheet metal CNC incremental forming[J]. The International Journal of Advanced Manufacturing Technology, 2011, 54(9-12): 911-919.
[10]Rajiv M, Reddy N V, Cao J. Automatic 3D spiral toolpath generation for single point incremental forming[J]. Journal of Manufacturing Science and Engineering, 2010, 132(12): 1-10.
[11]Liu Z B, Li Y L, Meehan Paul A. Tool path strategies and deformation analysis in multi-pass incremental sheet forming process[J]. The International Journal of Advanced Manufacturing Technology, 2014, 75(1-4): 395-409.
[12]Malhotra R, Cao J, Ren F, et al. Improvement of geometric accuracy in incremental forming by using a squeezing toolpath strategy with two forming tools[A]. International Manufacturing Science and Engineering Conference, ASME[C]. Corvallis, Oregon, USA, 2011.
[13]Lu B, Chen J, Ou H, et al. Feature-based tool path generation approach for incremental sheet forming process[J]. Journal of Materials Processing Technology, 2013, 213(7): 1221-1233.

服务与反馈：

【文章下载】【加入收藏】