A Multi-Agent Based Tool Path Planning Method for STEP-NC Compliant Milling

2010 ◽  
Vol 97-101 ◽  
pp. 3382-3386 ◽  
Author(s):  
Juan Du ◽  
Xian Guo Yan ◽  
Zhi Chen
Keyword(s):  
Path Planning ◽  
Tool Path ◽  
Data Transfer ◽  
Planning Method ◽  
Cnc Machining ◽  
Distributed Artificial Intelligence ◽  
Tool Path Planning ◽  
Machining Processes ◽  
Nc Program ◽  
Multi Agent

Today a new model of data transfer between CAD/CAM systems and CNC machines, called STEP-NC, is being developed by the ISO technical Committees. It overcomes the shortcomings of ISO 6983 by specifying machining processes rather than machine motion, using the object-oriented concept of working step. Although the STEP-NC contains abundant geometry information of part and associated process parameters, the tool path is general not included in the STEP-NC program. So before the beginning of the STEP-NC-compliant CNC machining, the tool path should be firstly designed. By analyzing the characteristic of STEP-NC data model for milling, a working step-oriented tool path planning method for milling was proposed in this paper, and the distributed artificial intelligence methods, namely collaborative multi-agent was employed to accomplish tool path planning. Firstly a multi-agent architecture was constructed to allow multiple agents to work cooperatively to realize automation of tool path planning, and then, the function of every kind of agent and the communication between the agents were all described in detail. At last, one test component was designed and simulated to demonstrate the capabilities of this research in the paper.

Efficient CNC Tool Path Planning Using Point Cloud

2018 ◽  
Author(s):  
Sumedh Ghogare ◽  
S. S. Pande
Keyword(s):  
Path Planning ◽  
Point Cloud ◽  
Tool Path ◽  
Planning Process ◽  
Cnc Milling ◽  
Tool Path Planning ◽  
Planning Strategy ◽  
Part Quality ◽  
Nc Program ◽  
Cutter Path

This paper reports the development of an efficient iso-scallop tool path planning strategy for machining of freeform surfaces on a three axis CNC milling center using the point cloud as the input. Boundary of the point cloud is chosen as the Master Cutter Path, using which the scallop points are computed. Adjacent side tool paths are computed using these scallop points and the path planning process is completed till the entire surface is covered. The system generates post-processed NC program in ISO format which was extensively tested for various case studies. The results were compared with the iso-planar tool path strategy from commercial software. Our system was found to generate efficient tool path in terms of part quality, productivity and storage memory.

scholarly journals A High-Efficiency Impeller Channel Quasi-Triangular Tool Path Planning Method Based on Template Trajectory Mapping

2018 ◽  
Vol 36 (6) ◽  
pp. 1216-1223
Author(s):  
Feiyan Han ◽  
Juan Wei ◽  
Bin Feng ◽  
Wu Zhang
Keyword(s):  
Path Planning ◽  
Tool Path ◽  
Planning Method ◽  
Free Form ◽  
Physical Domain ◽  
Tool Path Planning ◽  
Surface Machining ◽  
Mapping Model ◽  
Trajectory Mapping ◽  
Free Form Surface

The manufacturing technology of an integral impeller is an important indicator for measuring the manufacturing capability of a country. Its manufacturing process involves complex free-form surface machining, a time consuming and error-prone process, and the tool path planning is considered as a critical issue of free-form surface machining but still lacks a systematic solution. In this paper, aiming at the tool path planning of the impeller channel, a quasi-triangular tool path planning method based on parametric domain template trajectory mapping is proposed. The main idea is to map the template trajectory to physical domain by using the mapping model of parametric domain to the physical domain to obtain the actual machining path. Firstly, the trajectory mapping model of parametric domain to physical domain is established using the morphing technique, and the template trajectory mapping method in the parametric domain is given. Secondly, the clean-up boundary of the impeller channel is determined in the parametric domain, and the quasi-triangular template trajectory of the impeller channel is defined. Finally, taking a certain type of impeller as an example, the quasi-triangular tool path of the impeller channel is calculated, and the tool path calculation time of this method is compared with that of the traditional isometric offset method. The result shows that the computational efficiency is improved by 45% with this method, which provides a new method for the rapid acquisition of NC machining tool path for impeller channels. In addition, the simulation and actual machining are carried out, the results show that the shape of actual cutting traces on the surface of the impeller channel is quasi-triangular, showing that this method is effective and feasible.

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

Region based Efficient CNC Machining using Point Cloud Data

2020 ◽  
pp. 1-35
Author(s):  
Mandeep Dhanda ◽  
Aman Kukreja ◽  
Sanjay Pande
Keyword(s):  
Path Planning ◽  
Surface Quality ◽  
Point Cloud ◽  
Tool Path ◽  
Cnc Machining ◽  
Real Surface ◽  
Tool Path Planning ◽  
Machining Time ◽  
Cloud Data ◽  
Planning Strategy

Abstract This paper presents an efficient tool path planning strategy for three-axis CNC machining using curvature based segmentation (CBS) of freeform surface from its representation in the form of a point cloud. Curvature parameters estimated over the point data are used to partition the surface into convex, concave, and saddle like regions. Grid based adaptive planar tool path planning strategy is developed to machine each region separately within its boundaries. In addition to the region by region machining, strategy to stitch the obtained regions is also developed to minimize the tool lifts and tool marks. The developed region based tool path planning strategy is compared with the point cloud based adaptive planar strategy, iso-scallop strategy and commercial software for parts with various complexities. The result shows significant improvement in terms of performance parameters viz. machining time, tool path length and code length while maintaining the desired part surface quality. The proposed method is also tested by machining a real surface and analyzing its surface quality.

Efficient CNC Machining of Freeform Surfaces From Point Cloud

2018 ◽  
Author(s):  
Mandeep Dhanda ◽  
S. S. Pande
Keyword(s):  
Path Planning ◽  
Point Cloud ◽  
Tool Path ◽  
Cnc Machining ◽  
Planning System ◽  
Process Conditions ◽  
Cnc Machine ◽  
Tool Path Planning ◽  
Efficient Tool ◽  
Freeform Surfaces

This paper reports the development of an efficient tool path planning strategy for CNC machining of freeform surfaces directly from their representation in the form of point cloud. A grid based adaptive isoplanar tool path planning system has been designed and implemented for 3axis CNC machine using ball end mill. Inverse tool offset algorithm (IOM) is used to compute initial uniform CL (Cutter Location) grid points. From these CL points, surface slope and curvature are estimated and the forward and side step errors likely to be produced during machining are computed. The grid is subsequently refined through segmentation if the error values exceed the user defined tolerances. Adaptive grid refinement is continued iteratively till the error values converge below the prescribed tolerance limits. The grid (CL) points are sequenced to generate the final tool path. The software system developed takes the input part model as point cloud and generates post-processed CNC part program in the ISO format. The CNC part programs were extensively tested for various case studies on the commercial CNC simulator as well on the actual CNC machine. The results were compared with those from the commercial software for the same process conditions. Our system was found to generate more efficient tool paths in terms of enhanced productivity, part quality and reduced memory requirement.

Study on Path Planning for Industrial Robots in Free-Form Surfaces Polishing

2008 ◽  
Vol 392-394 ◽  
pp. 771-776 ◽  
Author(s):  
Jian Ming Zhan ◽  
Xiao Qin Zhou ◽  
Li Yong Hu
Keyword(s):  
Path Planning ◽  
Tool Path ◽  
Industrial Robots ◽  
Planning Method ◽  
Free Form ◽  
Systematic Research ◽  
Tool Path Planning ◽  
Direction Parallel ◽  
Free Form Surfaces ◽  
Polishing Tool

Expected path of polishing tool is one of the most essential needs for movement scheduling and movement controlling of polishing robot in free-form surfaces polishing. By analyzing the expected movement and position of polishing tool and based on the traditional movement scheduling methods, this paper carries out systematic research works on contour-parallel-machining tool path planning method and direction-parallel-machining tool path planning method for polishing tool paths figuring out. Compared with contour-parallel-machining tool path planning method, the direction-parallel-machining tool path planning method needs one less number of degree of freedom and is much easier to avoid physical interventions and mechanic singularity, so it is an improved one.

Sign in / Sign up

Export Citation Format

Share Document