Study on Numerical Control Machining Technology of Full-Surface Part

2012 ◽  
Vol 510 ◽  
pp. 384-389
Author(s):  
Jin Gui Wan ◽  
Fei Zhang ◽  
Bei Hua Li ◽  
Qi Gao
Keyword(s):  
Process Analysis ◽  
Nc Machining ◽  
Numerical Control ◽  
Machining Process ◽  
Machining Parameters ◽  
Cnc Milling ◽  
Cnc Machine ◽  
Numerical Control Machining ◽  
Surface Part ◽  
Nc Code

A complex part, which has curved surface overall, is trial-manufactured with CNC machine. The NC machining process and technology of this full-surface part are studied in this paper. First, the 3D model of the part is created in the modeling module of UG system. Then, process analysis and scheme are developed. As the part has an irregular shape and the entire surface is to be NC machined, there are many difficulties during processing. The optimized process plan is determined. In the manufacturing module of UG system, the NC machining parameters are set according to the processing requirements, the tool paths are generated, edited and checked, and the NC code is generated by post processing. Finally, the part is manufactured using a 3-axis CNC milling machine with the NC programs. It has desirable shape and high accuracy. The result shows that the NC process is reasonable and efficient. CAD/CAM integration technology is applied successfully in this example. The methodology and technology introduced in this paper can provide valuable reference for processing similar parts, and it is also useful for correlational study.

Research about Numerical Control Machining of STL Files Based on Fagor CNC System

2011 ◽  
Vol 314-316 ◽  
pp. 1597-1602 ◽  
Author(s):  
Chao Wang ◽  
Yuan Yao ◽  
Qian Sheng Zhao ◽  
Qing Xi Hu
Keyword(s):  
Numerical Control ◽  
Machining Process ◽  
Milling Machine ◽  
Cnc Milling ◽  
Cnc System ◽  
Numerical Control Machining ◽  
Nc Code ◽  
Virtual Machining ◽  
Cnc Milling Machine ◽  
System Designs

According to the situation that surface grid models are widely used, this article summarizes the research status of numerical control machining based on Triangle facets models, introduces the STL files in detail, expounds the process of machining STL files by using Pro/Toolmaker system, designs an independent post processor for generating NC code for Fagor machine, simulates the virtual machining process through Vericut software, verifies the actual machining process on Fagor three axis CNC milling machine. Proves the method of numerical control machining based on STL files is actually feasible for planar milling、cavity milling、profile milling, Realizes the machining of STL files based on Fagor CNC system.

The Research of Five-Axis NC High Efficient Machining Technology for UAV Integral Impeller

2014 ◽  
Vol 598 ◽  
pp. 189-193
Author(s):  
Hui Zhao ◽  
Yu Jun Cai ◽  
Guo He Li
Keyword(s):  
Process Analysis ◽  
Coordinate Measuring Machine ◽  
Machining Process ◽  
Machining Parameters ◽  
Program Optimization ◽  
Cnc Machine ◽  
Rough Machining ◽  
High Efficient ◽  
Measuring Machine ◽  
Five Axis

In this paper, a very detailed process analysis for UAV integral impeller was made. According to the specific processing requirements, the appropriate CNC machine, blank and cutting tools have been choosing. In the rough machining process, various machining strategies have been used for comparing and analyzing, finally a more efficient roughing method with the accurate machining parameters will be obtained. At the same time the machining method have been improved and the processing parameters also have been determined in the semi-finishing process. Through the simulation processing in VERICUT, the possibility of the existence of interference which is usually occurred in the actual processing can be ruled out and the program optimization will be finished in the meantime. Finally, using intelligent three-coordinate measuring machine the consequence will be verified and inspected in the actual machining process.

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.

Optimizing the Machining Parameters in Glass Grinding Operation on the CNC Milling Machine for Best Surface Roughness

2010 ◽  
Vol 154-155 ◽  
pp. 721-726 ◽  
Author(s):  
Mohd Sayuti ◽  
Ahmed Aly Diaa Mohammed Sarhan ◽  
Mohd Hamdi Bin Abd Shukor
Keyword(s):  
Surface Roughness ◽  
Machining Process ◽  
Depth Of Cut ◽  
Response Analysis ◽  
Machining Parameters ◽  
Milling Machine ◽  
Cnc Milling ◽  
Cnc Machine ◽  
Cnc Milling Machine ◽  
Tool Diameter

Glass is one of the most difficult materials to be machined due to its brittle nature and unique structure such that the fracture is often occurred during machining and the surface finish produced is often poor. CNC milling machine is possible to be used with several parameters making the machining process on the glass special compared to other machining process. However, the application of grinding process on the CNC milling machine would be an ideal solution in generating special products with good surface roughness. This paper studies how to optimize the different machining parameters in glass grinding operation on CNC machine seeking for best surface roughness. These parameters include the spindle speed, feed rate, depth of cut, lubrication mode, tool type, tool diameter and tool wear. To optimize these machining parameters in which the most significant parameters affecting the surface roughness can be identified, Taguchi optimization method is used with the orthogonal array of L8(26). However, to obtain the most optimum parameters for best surface roughness, the signal to noise (S/N) response analysis and Pareto analysis of variance (ANOVA) methods are implemented. Finally, the confirmation test is carried out to investigate the improvement of the optimization. The results showed an improvement of 8.91 % in the measured surface roughness.

An Optimization Research on Four-Axis NC Machining Using UG Programming and VERICUT Simulation

2014 ◽  
Vol 971-973 ◽  
pp. 359-363
Author(s):  
Xin Gui Lin ◽  
Gen Miao Yi ◽  
Xin Rong Zhan
Keyword(s):  
Nc Machining ◽  
Numerical Control ◽  
Machining Process ◽  
Combined Method ◽  
Numerical Control Machining ◽  
Software Simulation

In this paper, the characteristics of four-axis NC (Numerical Control) machining are analyzed initially. Afterwards, in order to obtain a complex workpiece by use of four-axis NC machining, a combined method that can optimize the machining process is proposed, which includes: modeling and programming based on UG software; simulation of the machining process by applying VERICUT. Finally, the results indicate that the method combined with UG programming and VERICUT simulation has practicability and superiority in four-axis NC machining.

Analysis on the NC Milling Machining Precision and the Error

2014 ◽  
Vol 926-930 ◽  
pp. 1214-1217
Author(s):  
Bo Tang
Keyword(s):  
Process Design ◽  
Process Analysis ◽  
Milling Process ◽  
Numerical Control ◽  
Machining Process ◽  
Cnc Milling ◽  
Machining Precision ◽  
Cnc Milling Machine ◽  
Process Route ◽  
Nc Milling

the numerical control milling process design is on the basis of ordinary milling process design, combining with the characteristics of CNC milling machine, give full play to its advantages. CNC milling process design is the key to reasonable arrangement of process route, to coordinate the relationship between the CNC milling process and other process, determine the content and steps of NC milling process make the necessary preparations for programming. NC milling machining process analysis is related to the effectiveness and success or failure, is one of the important preparations before programming. This article will mainly for NC milling machining precision and machining error analysis and research.

scholarly journals The Optimization of Machining Parameters for Milling Operations by Using the Nelder–Mead Simplex Method

2020 ◽  
Vol 4 (3) ◽  
pp. 66
Author(s):  
Yubin Lee ◽  
Alin Resiga ◽  
Sung Yi ◽  
Chien Wern
Keyword(s):  
Simplex Method ◽  
Surface Characteristics ◽  
Initial Guess ◽  
Numerical Control ◽  
Machining Process ◽  
Main Process ◽  
Machining Parameters ◽  
Cnc Milling ◽  
Milling Operations ◽  
Machining Operations

The purpose of machining operations is to make specific shapes or surface characteristics for a product. Conditions for machining operations were traditionally selected based on geometry and surface finish requirements. However, nowadays, many researchers are optimizing machining parameters since high-quality products can be produced using more expensive and advanced machines and tools. There are a few methods to optimize the machining process, such as minimizing unit production time or cost or maximizing profit. This research focused on maximizing the profit of computer numerical control (CNC) milling operations by optimizing machining parameters. Cutting speeds and feed are considered as the main process variables to maximize the profit of CNC milling operations as they have the greatest effect on machining operation. In this research, the Nelder–Mead simplex method was used to maximize the profit of CNC milling processes by optimizing machining parameters. The Nelder–Mead simplex method was used to calculate best, worst, and second-worst value based on an initial guess. The possible range of machining parameters was limited by several constraints. The Nelder–Mead simplex method yielded a profit of 3.45 ($/min) when applied to a commonly used case study model.

An Accurate and Efficient Approach to Three-Dimensional Geometric Modeling of Undeformed Chips for the Geometric and the Physical Simulations of Three-Axis Milling of Complex Parts

2015 ◽  
Vol 138 (5) ◽  
Author(s):  
Zhiyong Chang ◽  
Zezhong C. Chen
Keyword(s):  
Geometric Modeling ◽  
High Performance ◽  
Physical Simulation ◽  
Three Dimensional ◽  
Numerical Control ◽  
Machining Process ◽  
Machining Parameters ◽  
Cnc Milling ◽  
Physical Simulations ◽  
Complex Parts

To pursue high-performance computer numerical control (CNC) milling of complex parts, it is crucial to simulate their machining process geometrically and physically with high fidelity beforehand. The geometric simulation is to construct three-dimensional (3D) models of the finished parts and to compute geometric deviation between the models and the part designs, in order to verify the planned tool paths. The physical simulation is to build undeformed chips geometric models and in-process workpiece models and to compute instantaneous cutting forces, in order to optimize the machining parameters. Therefore, it is essential to accurately and efficiently model undeformed chips geometry in machining complex geometric parts. Unfortunately, this work is quite challenging, and no well-established method for this work is available. To address this problem, our work proposes an accurate and effective approach to 3D geometric modeling of undeformed chips geometry in three-axis milling of complex parts. The outstanding feature of this approach is that undeformed chip models and in-process workpiece models can be effectively constructed. This approach lays a theoretical foundation for the geometric and the physical simulations of three-axis milling. It advances the technique of machining simulation and promotes high-performance machining of complex parts.

Research and Application of CAD/CAM Technology in NC Machining of Part with Complex Surface

2014 ◽  
Vol 602-605 ◽  
pp. 111-116
Author(s):  
Jin Gui Wan ◽  
Wei Ding
Keyword(s):  
Computer Software ◽  
Complex Surface ◽  
Nc Machining ◽  
Machining Parameters ◽  
Cnc Milling ◽  
Cnc Machine ◽  
Seamless Connectivity ◽  
Cad Cam ◽  
Cnc Programming ◽  
The Cost

The development of modern advanced manufacturing technology greatly relies on the CAD / CAM technology. Many pieces of computer software with CAD/CAM function have been developed rapidly in recent years. Unigraphics (UG) is one of the outstanding representatives. It has a powerful design and CNC programming function, and CAD/CAM seamless connectivity. As an application example, a mouse model part which has complex surface was designed and trial-manufactured with CNC machine. First, the 3D model of the part was created in the modeling module of UG software. Then, the process scheme was developed after analyzing. In the manufacturing module of UG software, the NC machining parameters were set according to the processing requirements, the tool paths were generated, edited and checked, and the NC codes were generated by post processing. And then, the NC machining was simulated in YULONG software. Finally, the part was manufactured in a 3-axis CNC milling machine. It has desirable shape and high accuracy. The results show that UG has a perfect CAD/CAM function. The CAD/CAM technology based on UG makes the NC machining of complex surface part very convenient. It improves the efficiency of design and machining, shortens the manufacturing cycle, and reduces the cost, which reflects the importance of the CAD/CAM software in NC machining. The method described in this paper can provide valuable reference for processing similar parts, and it is also useful for related study.

The Study on Application of Worm’s Numerical Control Machining

2010 ◽  
Vol 455 ◽  
pp. 594-598 ◽  
Author(s):  
Ying Liang Yu ◽  
Zai Dan Geng
Keyword(s):  
Worm Gear ◽  
Cnc Machining ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Cnc Milling ◽  
Cnc Machine ◽  
Special Equipment ◽  
Numerical Control Machining ◽  
Practical Applications ◽  
Calculation Of Parameters

One of the significant features of CNC technological superiority is in the practical applications, according to the necessary movement of processed parts required, we can use generating method to transform CNC machine tools and receive the desired results. This article discussed under the premise that lack of special equipment, transforming ordinary horizontal CNC milling to machine worm gear. The advantage of this numerical transformation approach is using the processing functions of thread and tapered thread instruction, skillfully translating into control of the CNC machining worm, expanding the CNC machining capabilities and the scope of practical application. Also apply the advantages of CNC technology, reduce or eliminate the accumulation of worm in the processing of pitch error which makes the worm processing precision and smoothness of worm drive better. This paper discussed the principles of numerical control transformation, transformation of milling machine structure and the conversion calculation of parameters in programming, analyzed the causes and processing effects of worm gear processing errors control and accuracy improving.

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