Research on the Algorithm of Tool Path Rapid Generation for NC Machining of Molar Prosthesis

2007 ◽  
Author(s):  
Yunfeng Bu ◽  
Quanping Sun ◽  
Xiaogang Chen ◽  
Qianliang Chen ◽  
Xiang Zhang
Keyword(s):  
Tool Path ◽  
Nc Machining ◽  
Rapid Generation

Application of Convex Hull for Tool Interference Avoidance in 5-Axis CNC Machining

1996 ◽  
Author(s):  
Yuan-Shin Lee ◽  
Tien-Chien Chang
Keyword(s):  
Convex Hull ◽  
Tool Path ◽  
Correction Method ◽  
Nc Machining ◽  
Cnc Machining ◽  
Free Form ◽  
Interference Avoidance ◽  
Tool Interference ◽  
Free Form Surface ◽  
Free Form Surfaces

Abstract In this paper, a methodology of applying convex hull property in solving the tool interference problem is presented for 5-axis NC machining of free-form surfaces. Instead of exhausted point-by-point checking for possible tool interference, a quick checking can be done by using the convex hull constructed from the control polygon of free-form surface modeling. Global tool interference in 5-axis NC machining is detected using the convex hull of the free-form surface. A correction method for removing tool interference has also been developed to generate correct tool path for 5-axis NC machining. The inter-surface tool interference can be avoided by using the developed technique.

scholarly journals Dual Drive Curve Tool Path Planning Method for 5-axis NC Machining of Sculptured Surfaces

2010 ◽  
Vol 23 (4) ◽  
pp. 486-494 ◽  
Author(s):  
Xu Rufeng ◽  
Chen Zhitong ◽  
Chen Wuyi ◽  
Wu Xianzhen ◽  
Zhu Jianjun
Keyword(s):  
Path Planning ◽  
Tool Path ◽  
Nc Machining ◽  
Planning Method ◽  
Sculptured Surfaces ◽  
Tool Path Planning

Free Surface NC Machining Tool Path Optimization Algorithm Based on the Iso-Scallop Method

2015 ◽  
Vol 799-800 ◽  
pp. 1193-1196 ◽  
Author(s):  
Shu Kun Cao ◽  
Yong Hong Deng ◽  
Kun Zhang ◽  
Shi Ping Liu ◽  
Wen Jing Meng
Keyword(s):  
Free Surface ◽  
Optimization Algorithm ◽  
Tool Path ◽  
Nc Machining ◽  
Path Optimization ◽  
Surface Boundary ◽  
Step Size ◽  
Processing Efficiency ◽  
Tool Path Optimization ◽  
Point Set

In order to solve the problem of free surface processing of tool redundancy,the tool lack problem, and the demerit of low machining efficiency, etc., based on the iso-scallop method, based on the iso-scallop method, we put forward a kind of free surface NC machining tool path optimization algorithm,make the surface boundary discrete point set, which is generated by point set ring machining path, diagonal connection and then use the path of the adjacent curve, forming cutting tool machining line.finally, the calculation of step size and line spacing in machining path based on the iso-scallop method and the process of feeding direction is optimized. Proved by the simulation process, the algorithm is feasible and can effectively avoid tool redundancy and tool lack problems,concesquently, processing efficiency improved significantly.

NURBS Curve Fitting Based on Arc Centripetal Parameterization for Tool Path Generation

2013 ◽  
Vol 274 ◽  
pp. 121-123 ◽  
Author(s):  
Cun Guang Yu
Keyword(s):  
Curve Fitting ◽  
Tool Path ◽  
Nc Machining ◽  
Tool Path Generation ◽  
Sculptured Surface ◽  
Arc Length ◽  
Tool Path Planning ◽  
Nurbs Curve ◽  
Location Data ◽  
Cutter Location Data

NURBS curve fitting is used for tool path planning for sculptured surface NC machining. The cutter location data is parameterized by equal chord arc length parameterization, and Centripetal Parameterization is improved. It is not only more approach to curves nature equation in theory, but also closer to the interpolated curves in actual fitting. It is directly to reflect the curvature of curves of cutter location in NC machining.

Studies on the Algorithm for Five-Axis NC Machining with Triangular Facet Model

2013 ◽  
Vol 385-386 ◽  
pp. 726-730
Author(s):  
Ren Xian Geng ◽  
Hou Jun Qi ◽  
Xin Pan ◽  
Zhi Gang Liu
Keyword(s):  
Tool Path ◽  
Nc Machining ◽  
Surface Shape ◽  
Free Form ◽  
Cutting Efficiency ◽  
Triangular Facet ◽  
Constant Scallop Height ◽  
Free Form Surface ◽  
Five Axis ◽  
Facet Model

Using five-axis equipment for NC machining of free-form surface is an effective way to improve machining quality and machining efficiency, the surface shape and the five coordinate of the complexity of the machine tool movement led to its tool path planning technology is difficult. The paper aimed at the five coordinate NC machining of free-form surface and puts forward a five-axis NC machining method based on triangular facet model. The research based on triangular facet model, using constant scallop height method to calculate the step distance and improve the cutting efficiency to a great extent. In the process, tool path is generated, combining with the method of configuration space interference free.

An Algorithm for Generating Multi-Axis NC Machining Tool-Path on Scattered Point Cloud

2010 ◽  
Vol 139-141 ◽  
pp. 1322-1327
Author(s):  
Dian Zhu Sun ◽  
Jian Liu ◽  
Yan Rui Li ◽  
Zong Wei Niu
Keyword(s):  
Differential Geometry ◽  
Spanning Tree ◽  
Point Cloud ◽  
Tool Path ◽  
Minimum Spanning Tree ◽  
Reference Data ◽  
Nc Machining ◽  
Spatial Index ◽  
Local Reference ◽  
Normal Vectors

To achieve the accurate duplication of product in reverse engineering, we proposed an algorithm for generating multi-axis NC machining tool-path directly based on scattered point cloud. At first, we obtained the neighborhoods of tool-path section based on the dynamic spatial index of scattered point cloud and from which we selected the matching points. Then the tool-path section points can be obtained through intersection of the tool-path section and the lines which link the matching points, and the normal vectors of tool-path section points can be calculated based on the differential geometry property of local reference data. Finally we computed the cutter location points by means of projection method and sorted them based on the minimum spanning tree algorithm to form the tool-path. With the results of several experiments, the high precision and efficiency of this algorithm are verified.

Research and Application of Cutting Efficiency Optimization Based on VERICUT and UG

2014 ◽  
Vol 635-637 ◽  
pp. 612-615 ◽  
Author(s):  
Xiao Guang Ruan ◽  
Rong Rong Zhao ◽  
An Jiang Cai ◽  
Wan Li Ma ◽  
Jiang Liu
Keyword(s):  
Processing Speed ◽  
Processing Time ◽  
Tool Path ◽  
Nc Machining ◽  
Numerical Control ◽  
Machining Process ◽  
High Tech ◽  
Cutting Efficiency ◽  
Efficiency Optimization ◽  
Processing Cost

Use the process of dashboard on the solid high-tech 3D numerical control platform of NC machining process as an example, Using UG to establish the machine and parts model, the tool path have been optimized by VERICUT .As a result, enhances the processing speed, shortening the processing time, improve the cutting efficiency, reducing processing cost and making the process has been optimized .Finally, Reliability and optimization results are verified through numerical control platform instance.

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