STL模型特征信息的自适应分层的研究
|
摘要
模型的分层是3D打印前处理的一个重要环节,针对目前分层算法效率低、不能有效保留模型细微特征的问题,提出了一种新的基于STL模型特征信息的思想。首先提取模型的特征边,对特征边内实体表面采用区域增长算法进行表面分割,然后对分割后的表面判断其类型,最后对于不同的表面类型采用不同的分层求交处理算法。利用VC++6.0平台和OpenGL显示技术,依据模型表面几何特征自适应地变动层厚,减小台阶效应,加快分层效率,同样能很好地保留模型局部特征,且该算法可以根据实际模型的成型方向,实现分层方向的改变,保证成型零件的精度。
The slicing of the model is an important step for pre-processing of 3 D printing. Aiming at current low efficiency of slicing and difficulty in effectively preserving subtle features, a new adaptive slicing is proposed in terms of STL model feature. The slicing result via a two-step optimization scheme are computed. Firstly, the feature edge of the model is extracted, and the surface with the feature edge is partitioned by the region growth algorithm. Secondly, the different stratification intersection algorithms are used for different surface types. Using VC++6.0 and OpenGL platform, the thicknesses of slicing layers are optimized adaptively to reduce the step effect, save the printing time and preserve the visual quality of printing results. In addition, optimized slicing direction can be achieved to obtain fine resolution of the part in terms of its actual printing direction.
The slicing of the model is an important step for pre-processing of 3 D printing. Aiming at current low efficiency of slicing and difficulty in effectively preserving subtle features, a new adaptive slicing is proposed in terms of STL model feature. The slicing result via a two-step optimization scheme are computed. Firstly, the feature edge of the model is extracted, and the surface with the feature edge is partitioned by the region growth algorithm. Secondly, the different stratification intersection algorithms are used for different surface types. Using VC++6.0 and OpenGL platform, the thicknesses of slicing layers are optimized adaptively to reduce the step effect, save the printing time and preserve the visual quality of printing results. In addition, optimized slicing direction can be achieved to obtain fine resolution of the part in terms of its actual printing direction.
引文
[1]颜永年,张伟,卢清萍.基于离散/堆积成型概念的RPM原理与发展[J].中国机械工程,1994,5(4):64-66.
[2]史玉升,张李超,白宇,等.3D打印技术的发展及其软件实现[J].中国科学,2015,45:197-203.
[3]李仲阳,谢存禧,杨家红.基于STL文件的快速成型分层算法与毗邻拓扑信息的快速提取[J].计算机工程与应用,2002,38(7):32-35.
[4] Rock S J,Wozny M J.Utilizing topological information to increase scan vector generation efficiency[C]//Marcus H L.Prcceedings Solid Freeform Fabrication Symposium.Austin:The University of Texas at Austin, 1991:28-36.
[5]杨光,刘伟军,王维,等.STL格式文件拓扑重建及快速切片算法研究[J].现代制造工程,2009(10):32-35.
[6]胡德洲,李占利,李涤尘,等.基于STL模型几何特征分类的快速分层处理算法研究[J].西安交通大学学报,2000,34(1):38-45.
[7] Tata K,Fadel G,Bagchi A,et al.Efficient slicing for layered manufacturing[J].Rapid Prototyping Journal, 1998,4(4):151-167.
[8]赵保军,汪苏,陈五一.STL数据模型的快速切片算法[J].北京航空航天大学学报,2004,30(4):329-333.
[9]朱君,郭戈,颜永年.快速成型制造中基于模型连续性的快速分层算法研究[J].中国机械工程,2000,11(5):549-554.
[10]曾小英,许小曙,谭正华.快速成型中一种改进的轮廓线生成算法[J].计算机工程与应用,2014,50(4):177-180.
[11]张炜,金涛.三角网格特征边识别的一种有效方法[J].图学学报,2014,35(5):709-714.
[12]汪俊辉,陈兴,邓益民.STL三角形网格模型曲面特征边的提取[J].计算机应用与软件,2017,34(10):280-287.
[13]杨晟院,舒适,朱少茗.基于STL文件的三角形表面网格的特征线提取[J].计算机工程与应用,2008,44(4):14-19.
[14]周满元.一种非均匀自适应分层方法[J].计算机工程与应用,2005,41(3):72-74.
[15]李文康,陈长波,吴文渊.有效保留模型特征的自适应分层算法[J].计算机应用,2015,35(8):2295-2300.
[16] Aiyiti W, Xiang Jie, Zhang Lianzhong, et al.Study on the veritable parameters filling method of plasma arc welding based rapid prototyping[J].Key Engineering Materials,2012,522:110-116.
[17] Teng C,Pal D,Gong H,et al.A review of defect modeling in laser material processing[J].Additive Manufacturing,2017,14:137-147.
[18] Zhang Y,Bernard A,Gupta R K, et al.Feature based building orientation optimization for additive manufacturing[J].Rapid Prototyping Journal,2016,22(2).
[19] Calignano F, Lorusso M, Pakkanen J, et al.Investigation of accuracy and dimensional limits of part produced in aluminum alloy by selective laser melting[J].International of Advanced Manufacturing Technology,2016,88(1/4):1-8.
[20]马永壮,刘伟军,董遇泰.基于有向加权图递归切片算法的研究[J].中国机械工程,2003,14(14):1221-1223.
[21]陈昆,潘小帝,陈定方.一种快速成型自适应分层算法[J].武汉理工大学学报,2014,38(3):547-551.
[22] Alexander P, Allen S,Dutta D.Part orientation and build cost determination in layered manufacturing[J].Computer Aided Design,1998,30(5):343-358.
[23] Yao M, Chen Z,Luo L,et al.Level-set-based partitioning and packing optimization of a printable model[J].ACM Transactions on Graphics, 2015,34(6):1-11.
[24]洪军,唐一平,卢秉恒,等.光固化快速成型零件非水平下表面的支撑设计规则研究[J].机械工程学报,2004,40(8):155-159.
[2]史玉升,张李超,白宇,等.3D打印技术的发展及其软件实现[J].中国科学,2015,45:197-203.
[3]李仲阳,谢存禧,杨家红.基于STL文件的快速成型分层算法与毗邻拓扑信息的快速提取[J].计算机工程与应用,2002,38(7):32-35.
[4] Rock S J,Wozny M J.Utilizing topological information to increase scan vector generation efficiency[C]//Marcus H L.Prcceedings Solid Freeform Fabrication Symposium.Austin:The University of Texas at Austin, 1991:28-36.
[5]杨光,刘伟军,王维,等.STL格式文件拓扑重建及快速切片算法研究[J].现代制造工程,2009(10):32-35.
[6]胡德洲,李占利,李涤尘,等.基于STL模型几何特征分类的快速分层处理算法研究[J].西安交通大学学报,2000,34(1):38-45.
[7] Tata K,Fadel G,Bagchi A,et al.Efficient slicing for layered manufacturing[J].Rapid Prototyping Journal, 1998,4(4):151-167.
[8]赵保军,汪苏,陈五一.STL数据模型的快速切片算法[J].北京航空航天大学学报,2004,30(4):329-333.
[9]朱君,郭戈,颜永年.快速成型制造中基于模型连续性的快速分层算法研究[J].中国机械工程,2000,11(5):549-554.
[10]曾小英,许小曙,谭正华.快速成型中一种改进的轮廓线生成算法[J].计算机工程与应用,2014,50(4):177-180.
[11]张炜,金涛.三角网格特征边识别的一种有效方法[J].图学学报,2014,35(5):709-714.
[12]汪俊辉,陈兴,邓益民.STL三角形网格模型曲面特征边的提取[J].计算机应用与软件,2017,34(10):280-287.
[13]杨晟院,舒适,朱少茗.基于STL文件的三角形表面网格的特征线提取[J].计算机工程与应用,2008,44(4):14-19.
[14]周满元.一种非均匀自适应分层方法[J].计算机工程与应用,2005,41(3):72-74.
[15]李文康,陈长波,吴文渊.有效保留模型特征的自适应分层算法[J].计算机应用,2015,35(8):2295-2300.
[16] Aiyiti W, Xiang Jie, Zhang Lianzhong, et al.Study on the veritable parameters filling method of plasma arc welding based rapid prototyping[J].Key Engineering Materials,2012,522:110-116.
[17] Teng C,Pal D,Gong H,et al.A review of defect modeling in laser material processing[J].Additive Manufacturing,2017,14:137-147.
[18] Zhang Y,Bernard A,Gupta R K, et al.Feature based building orientation optimization for additive manufacturing[J].Rapid Prototyping Journal,2016,22(2).
[19] Calignano F, Lorusso M, Pakkanen J, et al.Investigation of accuracy and dimensional limits of part produced in aluminum alloy by selective laser melting[J].International of Advanced Manufacturing Technology,2016,88(1/4):1-8.
[20]马永壮,刘伟军,董遇泰.基于有向加权图递归切片算法的研究[J].中国机械工程,2003,14(14):1221-1223.
[21]陈昆,潘小帝,陈定方.一种快速成型自适应分层算法[J].武汉理工大学学报,2014,38(3):547-551.
[22] Alexander P, Allen S,Dutta D.Part orientation and build cost determination in layered manufacturing[J].Computer Aided Design,1998,30(5):343-358.
[23] Yao M, Chen Z,Luo L,et al.Level-set-based partitioning and packing optimization of a printable model[J].ACM Transactions on Graphics, 2015,34(6):1-11.
[24]洪军,唐一平,卢秉恒,等.光固化快速成型零件非水平下表面的支撑设计规则研究[J].机械工程学报,2004,40(8):155-159.