Research On Model Analysis Technology For 3D Printing

With the continuous development of 3D printing technology,3D printing technology has become an indispensable part of the emerging manufacturing industry.At present,there are imperfect problems in 3D printing software and hardware.Especially in the software,the development of a mature 3D printing software has become the primary problem in the current 3D printing field.There are various types of 3D printing.In this thesis,through in-depth research on the fused laminate printing method in 3D printing,some innovative breakthroughs have been made in the consumables,filling problems and support selection problems in fused laminate printing.The research group’s 3D printing integration software algorithm has been improved to a certain extent.(1)Volume calculation and hollowing out.This paper makes some brief descriptions of the volume calculation of 3D printing models,and makes a preliminary elaboration on the octree volume calculation algorithm adopted by the research group.After the volume of the3 D printing model was obtained,an in-depth study was conducted on how to carry out further material reduction.Through the method of hollowing out the surface of the inherent model,the material saving is realized under the premise of the same performance,and the strength performance of the material after hollowing is systematically studied,and the calculation formula for the strength of the material after hollowing is given.The formula obtains the maximum number of hollows on the surface of the material,as well as some algorithms for the selection of hollow points and the arrangement of integrated points.(2)The filling problem of slices.After the 3D model is sliced,the filling algorithm needs to be given before it can be imported into the 3D printer for printing.According to the characteristics of fused deposition modeling printing,the traditional filling process mainly uses straight lines as scanning lines to fill the slices.This paper proposes a method for filling from the inside out with concentric circles as filling lines.This filling method has many advantages compared to the traditional method of intersecting straight lines and slice graphics.When the center of the sliced ? graph is relatively empty,many scan lines inside the graph do not need to intersect the graph at all,which greatly simplifies the algorithm.It also saves a lot of time when printing.(3)The problem of support generation.In fused deposition modeling 3D printing,due to the limitation of the molding method,some areas of some printed objects cannot be directly printed,and certain external support is required to ensure the printing accuracy.This paper mainly studies the content of support surface and support point of support.The currently used method for selecting the support surface is mainly to determine the support surface by the inclination angle.This method is very simple but has certain limitations.When there is a sudden change,this method will fail.In this paper,the condition of failure formation is given by studying the properties of the planes forming abrupt change,and by studying the properties of the planes forming abrupt change,the method of determining the inclination angle is improved to a certain extent.In the selection of support points,this paper proposes a method of selecting the support points based on the nested circle to take the center of the circle.The support points found by this method are the method with the least support points under the premise of ensuring the stable printing of the object.practical value.The basic algorithm of this paper is realized by C++ programming,and the software of the research group has been improved to a certain extent.The basic algorithm is verified by some simple examples.