Tool Path Simulation Software with Ultra-Precision Grind for Aspherical Elements

2007 ◽  
Vol 10-12 ◽  
pp. 488-492
Author(s):  
Hui Feng Wang ◽  
Guang Lin Wang ◽  
Ze Sheng Lu
Keyword(s):  
Tool Path ◽  
Nc Machining ◽  
Simulation Software ◽  
Numerical Control ◽  
Machining Efficiency ◽  
Control Code ◽  
Nc Program ◽  
Ultra Precision

It is very important to improve machining efficiency and ensure manufacture quality through testing NC program of aspherical elements machining with simulation software. For ultra -precision NC machining tool, we analyzed the tool path of ultra-precision grind for aspherical elements, edited a simulation software of the path, got a structural chart of the software, analyzed some important module of the software. In fact the software is able to imitate tool path, test the correctness of numerical control code according to numerical control code edited.

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.

Transformation of Three-Axis Tool Path to Inclined Plane for Five-Axis Machining

2013 ◽  
Vol 716 ◽  
pp. 614-619
Author(s):  
Chen Hua She ◽  
Zhi Hao Zheng
Keyword(s):  
Machine Tool ◽  
Tool Path ◽  
Control Program ◽  
Simulation Software ◽  
Numerical Control ◽  
Inclined Plane ◽  
Nc Program ◽  
Cad Cam ◽  
Five Axis ◽  
Very High

Manufacturing industries such as the aerospace industry and the molding industry need to process products of complex and high-precision curved surface. Multi-axis machine tool with two rotational axes plays an indispensable role in processing such products. However, in a fiercely competitive market, each manufacturer is devoted to reduce processing time and costs. Therefore, how to efficiently create multi-axis numerical control program has become an important issue. Typical multi-axis machining parts often have specific machining features such as hole, groove or even engraved text on the inclined plane. Although the tool path can be generated by the advanced multi-axis CAD/CAM system, the prices of such systems are very high. This study proposed a methodology for defining the inclined working plane of the multi-axis machining tool. According to the defined working coordinate system proposed in this study, the tool path files of the traditional three-axis machine tool can be transformed to the five-axis NC program through post-processing calculation. As a result, the required NC program can be obtained for the same machining feature on any inclined plane in shorter time. Finally, this study tested and confirmed the accuracy of the numerical control program by solid cutting simulation software.

The Design of the NC Teaching Plotter Based on Single Chip Microcomputer

2014 ◽  
Vol 909 ◽  
pp. 342-345
Author(s):  
Xin Juan Shang
Keyword(s):  
Motor Control ◽  
Teaching Practice ◽  
Nc Machining ◽  
Numerical Control ◽  
Stepper Motor ◽  
Single Chip ◽  
Single Chip Microcomputer ◽  
Nc Program ◽  
Practice Teaching ◽  
Stepper Motor Control

The NC Teaching Plotter is designed for the practice teaching needs of NC machining, In order to improve current existing practice teaching environment of "many student, less equipment". It explains the NC concept with concise way and demonstrates NC thought by the intuitive operation.In this paper, the design of NC teaching plotter makes interpolation motion between pen and table based on NC program in accordance with the requirement made by user, to draw the graphics by moving the magnet control brush painting through the single chip digital control and the two stepper motor control X, Y two axes feed. The NC teaching plotter which demonstrates more clearly and directly the numerical control idea has high practical value for teaching practice.

scholarly journals Research on Deterministic Figuring of Ultra-Precision Shaft Parts Based on Analysis and Control of Figuring Ability

Materials ◽  
2020 ◽  
Vol 13 (11) ◽  
pp. 2458
Author(s):  
Zizhou Sun ◽  
Yifan Dai ◽  
Hao Hu ◽  
Guipeng Tie ◽  
Chaoliang Guan ◽  
...  
Keyword(s):  
Machine Tools ◽  
Measured Data ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Machining Efficiency ◽  
Air Bearing ◽  
Cnc Machine ◽  
Ultra Precision ◽  
Precision Machine Tools ◽  
And Control

The application of ultra-precision shaft parts is widely used, such as the spindle core of the air bearing spindle in ultra-precision machine tools. The precision of the spindle core is extremely high, and it is very difficult to obtain directly by traditional Computer Numerical Control (CNC) machine tools but is mostly obtained by manual grinding, whose machining efficiency is greatly limited. Based on the deterministic figuring theory, this paper focuses on the ultra-precision roundness, optimizing the filtering parameters of the measurement error data and studying the generation mechanism of the removal function morphology; the shape of the removal function is adjusted by combining the analysis of the figuring ability and positioning error. Finally, the optimized removal function is used on an experimental steel shaft, the average roundness convergence ratio is 72% higher than that of the original removal function, and the roundness reaches a 0.1 μm level. The result shows that a reasonable filtering of measured data and the removal function adjusted for the surface feature can improve the efficiency and precision of deterministic figuring on shaft parts.

Tool path generation for ultra-precision polishing of freeform optical surfaces in an off-axis three-mirror imaging system

2015 ◽  
Vol 231 (5) ◽  
pp. 814-824 ◽  
Author(s):  
Dengpeng Huang ◽  
Lei Zhang ◽  
Shijun Ji ◽  
Ji Zhao
Keyword(s):  
Tool Path ◽  
Imaging System ◽  
Concentric Circle ◽  
Tool Path Generation ◽  
Numerical Control ◽  
Path Generation ◽  
Freeform Surfaces ◽  
Primary Mirror ◽  
Tool Paths ◽  
Ultra Precision

The optical performance of the off-axis three-mirror imaging system can be greatly improved using freeform surfaces. This article focuses on the polishing of the primary mirror and tertiary mirror in an off-axis three-mirror imaging system. The primary mirror and tertiary mirror are fabricated on one monolithic substrate and described by non-uniform rational B-spline–based freeform surfaces. The separated and integrated polishing strategies are presented for polishing the two mirrors on the four-axis computer numerical control polishing platform. A tool path generation approach is proposed for polishing of the non-uniform rational B-spline–based freeform surface. Three kinds of the tool paths are given for ultra-precision polishing of the primary mirror and tertiary mirror with the freeform surfaces. The concentric circle path and the approximately concentric circle path are generated for polishing two mirrors separately, while the spiral path is calculated for integrated polishing of two mirrors simultaneously. The polishing tool posture along the planned tool paths is also analyzed. The ultra-precision polishing experiments of the primary mirror and tertiary mirror on the four-axis computer numerical control polishing platform are performed to verify the proposed approach for tool path generation.

Study on Tool-Path Generation for Ultra-Precision Machining of Optical Lens Array

2012 ◽  
Vol 516 ◽  
pp. 595-599
Author(s):  
Kui Liu ◽  
Pei Ling Liu ◽  
Hu Wu ◽  
Kah Chuan Shaw
Keyword(s):  
Tool Path ◽  
Cutting Tool ◽  
Tool Path Generation ◽  
Numerical Control ◽  
Precision Machining ◽  
Path Generation ◽  
Software Platform ◽  
Optical Lens ◽  
Lens Array ◽  
Ultra Precision

In this study, a computer numerical control (CNC) programming software platform for ultra precision machining of optical surfaces was developed based on an MS Windows application framework and openGL. Using cylindrical coordinates, the tool path can be generated based on the polar angle, radius and a linear coordinate of the Z-axis, as well as cutting tool nose radius compensation. A 3D simulation based on tool path generation was developed for machining verification, which largely reduces the oscillation of the machine during the ultra precision machining process. Ultra precision machining of an optical lens array was carried out on a 5-axis ultra precision machining centre using a single crystalline diamond cutter. The experimental results indicated that the oscillation effect can be largely reduced using the cutting tool path using a super steady machining strategy. This software platform is designed as a framework, where the capability and functions can be expanded by adding in more freeform surface packages.

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.

UG-CAM Point Processing with NC Machining Simulation Software of Integrated Application

2012 ◽  
Vol 268-270 ◽  
pp. 906-909
Author(s):  
Fan Xie ◽  
Ying Liu ◽  
Zhan Dong Liu ◽  
Mgambo Sharifa
Keyword(s):  
Nc Machining ◽  
Simulation Software ◽  
Machining Simulation ◽  
Nc Program ◽  
Nc Simulation ◽  
Operation Process ◽  
Programming Software ◽  
Nc Machining Simulation ◽  
Point To Point ◽  
Cam Software

As the world-famous, powerful and the most representative CAM software technology, UG has the most abundant processing strategy of the NC processing, design, programming software. Taking a general hole CNC processing technology as an example, UG programming operation skills and programming operation process are discussed, processing function of the point-to-point operation is used to complete general hole processing. Through UG – CAM, NC machining program is generated into simulation system for processing simulation, and eventually NC simulation processing and NC program are generated.

Wavelet-Based Tool Path Generation for Contour NC Machining

2012 ◽  
Vol 197 ◽  
pp. 302-306
Author(s):  
Jia Qing Yu ◽  
Gang Zhao
Keyword(s):  
High Resolution ◽  
Tool Path ◽  
Nc Machining ◽  
Tool Path Generation ◽  
Machining Efficiency ◽  
Control Points ◽  
Low Resolution ◽  
Curve Method ◽  
Resolution Curve ◽  
Definition Of

The high resolution curves could be transformed to low resolution curves by wavelet analysis. A new method for boundary preserving of the low resolution curve by modify the knot vector and the control points is represented. The definition of the deviation curve is proposed, and the discrete deviation curve method is represented to estimate the deviation between the low and high resolution curves. Wavelet-based tool path is generated for the contour NC machining by using the low resolution curves as the references. The experimental results demonstrate that the wavelet-based tool path has less information and is smoother than the traditional method’s. So it could reduce the calculating amount and improve the machining efficiency.

scholarly journals The Modular Design and Analysis of Open CNC System Machine

2018 ◽  
Vol 220 ◽  
pp. 08006
Author(s):  
Xueguang Li ◽  
Pan Yang ◽  
Zhe Chen ◽  
Liqin Miao
Keyword(s):  
Tool Path ◽  
Modular Design ◽  
Numerical Control ◽  
Motion Controller ◽  
Computer Aided Process Planning ◽  
Open Cnc ◽  
Nc Program ◽  
Open Numerical Control System ◽  
Open Cnc System ◽  
Machine Structure

According to the demanding of design and development about small 3 axes numerical control machine, three machine structure schemes were designed, the finite element method was used to analyze and optimize the machine structure, the movable gantry machine structure was decided as the ultimate scheme, the open numerical control system which includes NC program editing, tool path simulation, machine condition data displaying and computer aided process planning functions was developed in DELPHI language based on “PC+ motion controller” mode, the system modules can be customized by users, based on above all, the machine was assembled successfully.

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