Abstract:
|
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.
|
Funds:
|
|
AuthorIntro:
|
朱虎(1964-),男,博士,教授,E-mail:zhuhu10@163.com
|
Reference:
|
[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.
|
Service:
|
【This site has not yet opened Download Service】【Add
Favorite】
|
|
|