Development and Simulation of WEDM Five-Axis Linkage Machining

2013 ◽  
Vol 753-755 ◽  
pp. 924-927
Author(s):  
Xin Rong Wang ◽  
Ya Chao Cui ◽  
Yong Cheng Jiang
Keyword(s):  
Machine Tool ◽  
Complex Space ◽  
Machining Process ◽  
Curved Surface ◽  
Rotary Table ◽  
Key Technology ◽  
Application Range ◽  
Surface Work ◽  
Machining System ◽  
Five Axis

In order to solve the problem of machining work-pieces with complex space curved surface, a machining system was developed, and the rotary table with two sways is the most important part. The motion rules of machining work-pieces with complex space curved surface were analyzed, and the computer simulation of WEDM five-axis linkage system was put forward. Through running the simulation programs, the whole machining process of WEDM five-axis linkage system can be directly observed, and the satisfactory simulation results can be obtained. The NC machining system with five-axis linkage by WEDM was developed, and the complex curved surface work-pieces can be machined by combining the rotary table with two sways with the WEDM-HS machine tool. The key technology problem of machining work-pieces with complex space curved surface has been fundamentally solved, and the application range of WEDM-HS machine tool is widened, which suit the specific conditions in China.

scholarly journals Tool-Path Planning Method For Kinematics Optimization of Blade Machining On Five-Axis Machine Tool

2022 ◽  
Author(s):  
Zhongyang Lu ◽  
Xu Yang ◽  
Ji Zhao
Keyword(s):  
Path Planning ◽  
Machine Tool ◽  
Tool Path ◽  
Machining Process ◽  
Free Form ◽  
Traditional Methods ◽  
Machining Quality ◽  
Blade Machining ◽  
Kinematic Performance ◽  
Five Axis

Abstract Planning tool-paths on free-form surfaces is a widely discussed issue. However, traditional methods of generating paths capable of meeting all the requirements of blade machining remain challenging. In this study, a new iso-parametric path-planning strategy based on a novel parameterization method combined with the conformal transformation theory was proposed. The proposed method could adapt to the curvature characteristics of the blade surface, improving the kinematic performance of the machining process, reducing multi-axis coordinated motion control complexity, and improving machining quality. The proposed method was then compared with three traditional methods. The influence of the tool-path on the kinematic performance of the machine tool was quantitatively examined based on the kinematics models of two different machine tools. A large cutting depth milling experiment was conducted to verify that kinematics optimization could improve machining quality. The proposed method provides a more reasonable path-planning approach for blade machining on a five-axis machine tool, which is of great significance in reducing the cost of blade machining and the risks of blade failure. Moreover, it is of great significance for the large-scale automated production of blades.

Five-Axis NC Simulating Manufacturing of Titanium Alloy Integral Impeller

2013 ◽  
Vol 820 ◽  
pp. 122-125
Author(s):  
Chao Tai Wang ◽  
Jian Ping Zhang
Keyword(s):  
Titanium Alloy ◽  
Machine Tool ◽  
Simulation Software ◽  
Virtual Simulation ◽  
Machining Process ◽  
Machining Parameters ◽  
Five Axis

In this study, technological difficulties of machining titanium alloy impeller were analyzed. Furthermore, machining process of a certain impeller was illustrated as an example. Firstly, the impeller model was built through UG software. Secondly, the virtual simulation software was utilized to achieve simulating machining of the titanium alloy impeller, simulate cutting trajectory of cutters, motion of the machine tool, and so on. Finally, all machining parameters were optimized.

Dynamic Behavior of Long Turned Workpieces

2014 ◽  
Vol 657 ◽  
pp. 78-82 ◽  
Author(s):  
Neculai Eugen Seghedin ◽  
Mihăiţă Horodincă ◽  
Dragos Chitariu ◽  
Radu Drosescu
Keyword(s):  
Machine Tool ◽  
Dynamic Behavior ◽  
Cutting Tool ◽  
Machining Process ◽  
Technological System ◽  
System Stability ◽  
Machining System ◽  
Dynamic Quality ◽  
Tool Cutting

One of the most important parameters used in the evaluation of machining technological systems is the dynamic quality, represented by the system stability and the specific feature of the reaction to the external factors, during the machining process. The dynamic quality of the machining system is given by the dynamic quality of the machine tool, cutting tool, cutting tool holding device, workpiece fixture. The dynamic behavior of the machining system is given by the behavior of the elastic subsystem of the workpiece and tool. In the case that the deformation of the machine tool is negligible in relation with the two subcomponents of the technological system, mentioned, these can be studied separately. It is important to determine which is the weakest link of the technological system or to determine which is the component that can lead to the loss of the stability of the entire system. In the paper it is studied the dynamic behavior of the turned long, flexible workpieces. The workpieces are clamped in the lathes chuck and in the tailstock. The natural vibrational frequencies are determined according to a series of parameters as the diameter of the workpieces, axial forces applied by the tailstock.

Multi-scale prediction of the geometrical deviations of the surface finished by five-axis ball-end milling

2015 ◽  
Vol 231 (10) ◽  
pp. 1685-1702 ◽  
Author(s):  
Bo Li ◽  
Yanlong Cao ◽  
Xuefeng Ye ◽  
Jiayan Guan ◽  
Jiangxin Yang
Keyword(s):  
Machine Tool ◽  
End Milling ◽  
Dynamic Properties ◽  
Machining Process ◽  
Machined Surface ◽  
Multi Scale ◽  
Geometrical Errors ◽  
Macro Scale ◽  
Five Axis

Surface quality and accuracy are the main factors which affect the performance and life cycle of the products. Due to the complexity of the machining process, it is difficult to evaluate the machined surface real time. Simulation of the machining process became the main method to predict and control the quality of the machined surface. This article developed a multi-scale simulation system to predict the overall geometrical features of the milled surface. The effects of locating errors, geometrical errors of the machine tool and tool deflections on the quality of the machined surface are included in the proposed model. Also, different strategies are employed to evaluate the macro-scale and micro-scale geometrical deviations of the machined surface to balance the time cost and accuracy. In comparison with the traditional method, both the form deviations and roughness feature of the machined surface can be predicted. Since the static and dynamic properties of the machining system were considered, both the stable and unstable cutting conditions can be analyzed by using the proposed method. At the end of this article, case studies are carried out to validate the proposed method. The effects of the locating errors, geometrical errors of the machine tool and cutting parameters on the quality of the machined surface are analyzed. The significance of their influences on the quality of the machined surface was investigated.

Geometric Modeling and Five-Axis NC Machining for Centrifugal Impeller

2011 ◽  
Vol 314-316 ◽  
pp. 1556-1561 ◽  
Author(s):  
Jeng Nan Lee ◽  
Hung Shyong Chen ◽  
Huang Kuang Kung
Keyword(s):  
Machine Tool ◽  
Geometric Modeling ◽  
Nc Machining ◽  
Model Material ◽  
Machining Process ◽  
Centrifugal Impeller ◽  
Machining Processes ◽  
Design Concepts ◽  
Five Axis ◽  
Cam Software

As the blade surfaces of the centrifugal impeller are normally twisted in design to achieve the required performance, it can cause overcut and collision problems during machining. In order to comprehend the design concepts of impeller and create the capacity of the manufacture, the objectives of this paper are the regeneration of impeller profile and the studies of the five-axis NC machining. The geometry of the impeller is modeled according to the reverse engineering firstly. In the machining process, the flank cutting technique and the point cutting method are applied to rough and finish machining processes. Through the application of CAM software, the interference-free toolpath and the cutter location for five-axis NC machining are generated. To avoid collision between machine tool components, the generated toolpath is verified before actual machining through solid cutting simulation. It is also verified through the real cut with model material on a five-axis machine tool.

scholarly journals Process planning of the automatic polishing of the curved surface using a five-axis machining tool

2020 ◽  
Author(s):  
Lei Zhang ◽  
Chen Ding ◽  
Cheng Fan ◽  
Lei Zhang ◽  
Qian Wang ◽  
...  
Keyword(s):  
Machine Tool ◽  
Surface Quality ◽  
Tool Path ◽  
Flat Surface ◽  
Curved Surface ◽  
Cnc Machine ◽  
Metal Shell ◽  
Automatic Polishing ◽  
Five Axis ◽  
Polishing Efficiency

Abstract Curved surface parts are widely used in aerospace, automotive, electronic products and other fields due to their excellent aerodynamics, fluid dynamics and thermodynamics. Compared with the modeling technology of the curved surface, the development of the processing technology of the curved surface is slightly behind. In order to improve the processing quality and processing efficiency of the curved surface, this paper independently developed a five-axis CNC polishing machine tool, and studied the pre-processing and the post-precessing when machining the curved surface. Taking a metal shell of the mobile phone as an example, three different paths are planned for the flat surface and the curved surface respectively, and a method for generating the tool path is proposed. The kinematics model of the five-axis CNC machine tool is established, which is used to obtain the calculation formula of the movement amount of each axis when polishing in the flat surface and the curved surface of the metal shell. Finally, the polishing effects of the different paths about the surface quality and the polishing efficiency of the metal shell are studied through the polishing experiments, and the polishing path with the best surface quality and the highest polishing efficiency is found.

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