scholarly journals Optimization of Main Parts of Heavy Duty CNC Machine Centre Using Topological Optimization

2019 ◽  
pp. 0525-0532
Author(s):  
Frantisek Sedlacek ◽  
Vaclava Lasova ◽  
Petr Bernardin ◽  
Petr Janda ◽  
Marcel Svagr
Keyword(s):  
Topological Optimization ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Machine Centre

scholarly journals Research on carrying capacity of hydrostatic slideway on heavy-duty gantry CNC machine

2017 ◽  
Author(s):  
Chao Cui ◽  
Tieneng Guo ◽  
Yijie Wang ◽  
Qin Dai
Keyword(s):  
Carrying Capacity ◽  
Heavy Duty ◽  
Cnc Machine

Research of Gantry Machining Center Assembly Deviation Sensitivity Based on Multi-Body System

2014 ◽  
Vol 494-495 ◽  
pp. 365-372
Author(s):  
Guo Ping An ◽  
Zhuang Zhuang Liu ◽  
Zhi Feng Liu ◽  
Yong Sheng Zhao ◽  
Li Gang Cai
Keyword(s):  
Complex Structure ◽  
Cnc Machine Tools ◽  
Body System ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Machining Center ◽  
Assembly Method ◽  
Special Points ◽  
Multi Body ◽  
Assembly Deviation

Heavy duty machine tool has some special points, such as large size, complex structure, long cycle at Installation and commissioning, high requirements assembly processes and so on. Therefore, this paper established a mathematical model to transform the origin parts of the gantry machining center into assembly special form and creates a software as a plug-in for Solidworks based on it, proposes an easy but very practical assembly method based on Multi-body system under virtual environment. This method can calculate assembly deviation caused by manufacturing tolerance very quickly, and bring the sensitivity information clearly. Assembly deviation sensitivity and assembly method proposed in this paper can provide a way for the virtual assembly of heavy-duty CNC machine tools, Thus provide an important theoretical basis to improve the performance of the machine

scholarly journals Design and Analysis of a 5-Axis Gantry CNC Machine Tool

2020 ◽  
Vol 318 ◽  
pp. 01019
Author(s):  
Esra Yuksel ◽  
Emre Özlü ◽  
Ahmet Oral ◽  
Fulya Tosun ◽  
Osman Fatih İğrek ◽  
...  
Keyword(s):  
Machine Tool ◽  
Structural Dynamics ◽  
Critical Points ◽  
Fe Analysis ◽  
Cnc Machine Tool ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Velocity Measurements ◽  
Final Performance ◽  
Measurement Results

In this study, design and analysis of a gantry-type 5-axis CNC machine tool is presented with experimental results on a manufactured prototype. Critical points in the design of a large-scaled and heavy-duty machine tool is discussed. Moreover, FE analysis results is also presented with detailed discussion. The measurement results on structural dynamics is shown together with the FE results. Furthermore, the final performance of the machine tool is demonstrated thorough position and velocity measurements of the axes.

scholarly journals A genetic algorithm-based parameter-tuning algorithm for multi-dimensional motion control of a computer numerical control machine tool

2002 ◽  
Vol 216 (3) ◽  
pp. 429-438 ◽  
Author(s):  
L-Y Kuo ◽  
J-Y Yen
Keyword(s):  
Genetic Algorithm ◽  
Motion Control ◽  
Traditional Approach ◽  
Parameter Tuning ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Machine ◽  
Control Machine Tool ◽  
Machine Centre ◽  
Cross Axis

This paper addresses an automatic parameter-tuning algorithm for the multi-axis motion control of a computer numerical control (CNC) machine centre. The traditional approach to tune the control parameters in the multi-axis machines is to tune each axis independently. Some high-end-precision machines offer cross-axis motion parameters for impedance compensation but this is usually not satisfactory for practical purpose. Because each axis on the machine centre contributes to more than one working plane, obtaining the optimal performance for motions involving more than one plane often results in axis coupling. This paper introduces a systematic method to tune the servo parameters for multi-axis motion control. The tuning algorithm is based upon an intelligent genetic algorithm (GA) and the parameters are tuned for each work plane. The method optimized the multi-axis motion performance. A modified GA is also proposed to solve the convergence problem induced by a large number of parameters in multi-axis motion tuning.

Supporting Force Analysis of Oil Pads in Hydrostatic Rotary Table of Heavy Duty CNC Machine

2013 ◽  
Vol 655-657 ◽  
pp. 1267-1272
Author(s):  
Li Gang Cai ◽  
Xiao Shi ◽  
Yong Sheng Zhao
Keyword(s):  
Structural Deformation ◽  
Work Piece ◽  
Rotary Table ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Point Distribution ◽  
Supporting Point ◽  
Heavy Work ◽  
The Difference ◽  
Supporting Force

According to the characteristics of constant flow and closed hydrostatic rotary table used in heavy duty CNC machine, in order to consider the interaction between structural deformation of worktable and the supporting force of oil pads, an iteration method between hydrostatic theory calculation and finite element method (FEM) is used to get the real supporting force of each oil pad at different carrying state. The result is compared with the situation which is not considering the deformation of worktable and the difference between them can be used to guide the design of hydrostatic oil pads. The optimal radius of supporting point of work piece is also achieved using this method, which can provide theory basis for supporting point distribution of heavy work piece.

scholarly journals Remanufacture of rotary tables for heavy duty machine tools

2020 ◽  
Vol 317 ◽  
pp. 03001
Author(s):  
Dan Prodan ◽  
Anca Bucuresteanu ◽  
Adrian Motomancea ◽  
Alina Ovanisof
Keyword(s):  
Experimental Research ◽  
Machine Tools ◽  
Cnc Machine Tools ◽  
Rotary Table ◽  
Heavy Duty ◽  
Cnc Machine ◽  
Cnc Machines ◽  
Suspension Systems ◽  
Milling Machines

In this paper, the authors present some of the theoretical and experimental research conducted on the occasion of rotary tables remanufacturing for CNC machine tools belonging to Boring and Milling Machines family. They give the constructive solutions applied on CNC machines and the specific systems of guiding, locking and driving. The authors present also the modifications required when passing from CC variant to CNC variant in terms of locking - indexing systems and hydraulic suspension systems. The paper presents different achievements but insists particularly on the remanufacture of the rotary table with useful area 1700x2000 mm with longitudinal travel of 1000 mm (MRD 1700x2000/1000).

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