Development of a 3D Cutter Compensation Postprocessor System for Multi-Axis Machining

2006 ◽  
Vol 505-507 ◽  
pp. 571-576 ◽  
Author(s):  
Chen Hua She ◽  
Chun Cheng Chang
Keyword(s):  
Tool Wear ◽  
Vector Function ◽  
Tool Path ◽  
Three Dimensional ◽  
Simulation Software ◽  
Numerical Control ◽  
Numerical Control Machining ◽  
Nc Code ◽  
G Code ◽  
Contour Machining

The compensation of tool wear is the important topics for numerical control machining. The lower-hand controller has the basic G code function (G41/G42) to obtain the compensated cutter location for planar contour machining. However, the advanced controller with cutter compensation vector function should be employed in order to process the three dimensional compensated tool path. The purpose of this paper is to establish the algorithm for calculating the 3D cutter compensation vector and develop a generalized postprocessor system to obtain the NC code. Through the verification by the solid cutting simulation software, it confirmed the effectiveness of the proposed algorithm.

A General Method of Numerical Simulation for Incremental Forming

2011 ◽  
Vol 403-408 ◽  
pp. 4084-4088
Author(s):  
Li Jun Chen ◽  
Geng Pei ◽  
Qing Bo Fang ◽  
Jun Jie Pan
Keyword(s):  
Tool Path ◽  
Incremental Forming ◽  
Axial Stress ◽  
Thickness Distribution ◽  
Three Dimensional ◽  
Element Model ◽  
Simulation Method ◽  
Numerical Control ◽  
Nc Code ◽  
Tool Diameter

This paper presents a general simulation method for sheet metal incremental forming(ISF). Firstly, a three-dimensional finite element model based on Dynaform was developed to simulate the process. The tool path during the process simulation was directly defined by numerical control (NC) code and so identical with that in operation. Then, the results of numerical simulations with different process parameters, such as tool diameter, depth increment and wall angle, were discussed in details. The simulations reveal that with the decreasing depth step, increasing tool diameter and wall inclination angle, the axial stress reduces and leads to thinning reduction and more uniform thickness distribution. In addition, as the definition of the tool path was in accord with the genuine motion trajectory of the tool, the results deduced from this model may be more precise compared with those from other previously simplified models.

Adaptive spiral tool path generation for computer numerical control machining using point cloud

2021 ◽  
pp. 095440622199007
Author(s):  
Mandeep Dhanda ◽  
Aman Kukreja ◽  
SS Pande
Keyword(s):  
Tool Path ◽  
Cnc Machining ◽  
Numerical Control ◽  
Numerical Control Machining ◽  
Form Errors ◽  
Spiral Tool Path ◽  
Novel Method ◽  
Mesh Grid ◽  
Cloud Of Points ◽  
Cam Software

This paper reports a novel method to generate adaptive spiral tool path for the CNC machining of complex sculptured surface represented in the form of cloud of points without the need for surface fitting. The algorithm initially uses uniform 2 D circular mesh-grid to compute the cutter location (CL) points by applying the tool inverse offset method (IOM). These CL points are refined adaptively till the surface form errors converge below the prescribed tolerance limits in both circumferential and radial directions. They are further refined to eliminate the redundancy in machining and generate optimum region wise tool path to minimize the tool lifts. The NC part programs generated by our algorithm were widely tested for different case studies using the commercial CNC simulator as well as by the actual machining trial. Finally, a comparative study was done between our developed system and the commercial CAM software. The results showed that our system is more efficient and robust in terms of the obtained surface quality, productivity, and memory requirement.

Development of Machining Method for Micromold

2010 ◽  
Vol 154-155 ◽  
pp. 310-313
Author(s):  
Xue Feng Bi ◽  
Jin Sheng Wang ◽  
Jia Shun Shi ◽  
Ya Dong Gong
Keyword(s):  
Tool Path ◽  
Simulation Software ◽  
Machining Process ◽  
Machining Parameters ◽  
Machining Simulation ◽  
Post Process ◽  
Micro Parts ◽  
G Code ◽  
Micro Machine ◽  
3D Software

Micromold manufacturing technology is very important for the mass production of micro parts. In this paper, modeling of micromold is established in 3D software firstly. The 3D modeling is input into machining simulation software Master CAM to simulate machining process. The machining parameters and cutting tool path are optimized in machining simulation. Machining G code of micromold obtained from post-process program of Master CAM is input into HMI system of Micro Machine Tool (MMT), and hence the micromold will be machined precisely in MMT.

Numerical Control Programming System for Mill-Turn Machining

2015 ◽  
Vol 799-800 ◽  
pp. 1154-1157
Author(s):  
Chen Hua She ◽  
Jian Yu Lin ◽  
Shen Yung Lin
Keyword(s):  
Computer Aided Design ◽  
Tool Path ◽  
Geometric Model ◽  
Control Program ◽  
Simulation Software ◽  
Numerical Control ◽  
Programming System ◽  
Nc Program ◽  
Machining System ◽  
The Cost

To develop the numerical control program of mill-turn machine, the traditional method is to apply the computer-aided design and manufacture software to construct the geometric model, then to generate tool path and convert the path to NC program. For complex numerical control program of mill-turn machine, such as the multiple turret synchronized motion machining, because of the need to control time sequence, the NC program is highly required on using of dedicated software system. The objective of this paper is to establish a mill-turn machining system with window interface of via the language of Borland C++ Builder. The developed system can plan the machining path of simple mill-turn features, including turning shape, axial slot milling, and radial packet milling, and generate the corresponding NC program. For the milling functions, after the offset coordinates are calculated along the polygonal angle vector in the center point of cutters, the NC program is generated. For the turning functions, through importing the 2D DXF (Drawing Exchange Format) file and inputting related configurations, the entity coordinates can be retrieved and the corresponding NC program is then converted. By means of the solid cutting simulation software and practical cutting experiment for the generated numerical control program, the accuracy of the tool path generation algorithm is confirmed. Hence, the cost of purchasing commercial software can be saved and the time of generating program can also be decreased so that the working efficiency can be enhanced.

Multi-Axis Spiral Tool Path Generation for Aviation Blade Numerical Control Machining

2014 ◽  
Vol 496-500 ◽  
pp. 1535-1538
Author(s):  
Yan Cao ◽  
Zhi Jie Wang ◽  
Yu Bai
Keyword(s):  
Tool Path ◽  
High Efficiency ◽  
Contact Point ◽  
Numerical Control ◽  
Free Form ◽  
Machining Accuracy ◽  
Numerical Control Machining ◽  
Advantages And Disadvantages ◽  
Spiral Tool Path ◽  
Low Efficiency

Aiming at the low machining accuracy, low efficiency, cumbersome programming process, strong empirism and great programming difficulty of special shape blades, a new NC spiral milling method of high-quality and high-efficiency is put forward to process aviation blades. Three methods of constructing spiral tool path are studied, i.e., constructing the spiral using interpolation in parametric domain, constructing the spiral based on a driving surface and projection technology, and segmentally constructing the spiral by plane intersection. By comparison and analysis, their advantages and disadvantages are presented. According to the characteristics of spiral milling, the principles and algorithms of interference-free cutter location calculation for space free-form curved surface are introduced and the focus is put on cutter contact point calculation algorithms.

Inverse Design and Numerical Control Processing of the Little Bear Punch

2014 ◽  
Vol 687-691 ◽  
pp. 113-116
Author(s):  
Ge Zheng ◽  
Chun Wang ◽  
Bo Huang
Keyword(s):  
Geometric Modeling ◽  
Three Dimensional ◽  
Numerical Control ◽  
Inverse Design ◽  
Engineering Practice ◽  
Engineering Software ◽  
Nc Code ◽  
Three Dimensional Modeling ◽  
Machining Center ◽  
Means Of Measurement

Inverse design is the process of using a certain means of measurement to measure entity or model, and according to the measurements, refactoring physical CAD model through Three-dimensional geometric modeling methods. Basing on the little model, use reverse engineering methods, three-dimensional scanning technology and Raindrop Company produced the inverse engineering software to finish the reverse three-dimensional modeling design of little bear punch. Applying Master CAM to set parameters, simulation run, and automatically generate NC code, in the vertical machining center, complex curved surface NC machining of the model can be finished. In engineering practice, it can improve work efficiency, reduce the labor intensity of product development, and reduce the artificial error of the design.

An Octree Approach to Rough Machining

1987 ◽  
Vol 201 (3) ◽  
pp. 157-163 ◽  
Author(s):  
M F Yuen ◽  
S T Tan ◽  
W S Sze ◽  
W Y Wong
Keyword(s):  
Three Dimensional ◽  
Numerical Control ◽  
Path Generation ◽  
Layer By Layer ◽  
Rough Machining ◽  
Numerical Control Machining ◽  
Solid Models ◽  
Cutter Path ◽  
Jigs And Fixtures ◽  
Cutter Path Generation

This paper presents an octree subdivision based algorithm of automatic cutter path generation for machining on a numerical control machining centre. Both the stock and the part are represented by solid models. The machining strategy is based on a layer by layer approach taking care of the cutter strength and the variation of the part geometry. This approach allows the problem to be reduced from a three-dimensional to a two-dimensional cutter path generation problem which is solved by a quadtree representation of the plane. The method can be easily extended to include the jigs and fixtures and any other obstacles which would be represented by solid models. Algorithms are described in Pascal-like structure.

scholarly journals Discussion on Reverse Design of Components with Complex Curved Surface and Computer Numerical Control Machining

2018 ◽  
Vol 2 (4) ◽  
Author(s):  
Dapeng Fu ◽  
Xinyu Lv ◽  
Shuangyang Jiang
Keyword(s):  
Data Processing ◽  
Point Cloud ◽  
Tool Path ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Curved Surface ◽  
Surface Generation ◽  
Point Cloud Data ◽  
Numerical Control Machining ◽  
Cloud Data

Abstract: With the continuous development and advancement of science and technology, the work of tool path planning has received extensive attention. Among them, curved surface generation and data processing are the focus of management and design, which necessitate the full application of reverse design of complex curved surface components to complete numerical control processing, effective optimization and upgrading, integration the tasks of point cloud data collection and point cloud data processing to ensure that the corresponding computer numerical control machining model can exert its actual value. This paper briefly analyzes the basic principles of curved surface reconstruction as well as discusses the reverse design of complex curved components and the experimental processes and results that involved computer numerical control machining, which serves the purpose as reference only.

Research of the Numerical Control Machining Simulation

2012 ◽  
Vol 546-547 ◽  
pp. 767-771 ◽  
Author(s):  
Xia Xie ◽  
Ai Fen Xu ◽  
Xue Cheng Lu ◽  
Bin Wang
Keyword(s):  
Collision Detection ◽  
Geometric Modeling ◽  
Material Removal ◽  
Concept Development ◽  
Numerical Control ◽  
Machining Simulation ◽  
Numerical Control Machining ◽  
Nc Code ◽  
Modeling Technology ◽  
Nc Machining Simulation

In this paper, the concept, development status and trend of NC machining simulation technology were reviewed and its four key technologies were emphatically introduced, which were geometric modeling technology, NC code translation, entity collision detection and the material removal process simulation respectively.

Study on Simulation of Virtual Numerical Control Machining Process

2014 ◽  
Vol 701-702 ◽  
pp. 223-226
Author(s):  
Shuang Wu
Keyword(s):  
Three Dimensional ◽  
The Body ◽  
Numerical Control ◽  
Machining Process ◽  
Two Dimensional ◽  
Cnc Milling ◽  
Numerical Control Machining ◽  
Intersection Algorithm ◽  
Dimensional Simulation ◽  
Tool Cutting

This paper is study on the two-dimensional simulation of the machining process, and three-dimensional simulation. Analog three-axis CNC milling machining entity, it will be processed rough triangular facets discrete and discrete vector geometry and tool scans the body to do intersection algorithm to simulate the tool cutting process by continually updating the blank data to achieve material simulation removal process.

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