New Type MEDM Machine Tool and its Control Technology

2010 ◽  
Vol 447-448 ◽  
pp. 831-835
Author(s):  
Lian Xin Zhang ◽  
Fang Ji ◽  
Yong Bin Zhang ◽  
Xiao Hui Tang ◽  
Jian Guo He
Keyword(s):  
Machine Tool ◽  
Pulse Generator ◽  
Measuring System ◽  
Open Architecture ◽  
Motion Controller ◽  
Motion System ◽  
Nc Machine ◽  
Micro Hole ◽  
Energy Pulse ◽  
New Type

Open architecture NC orienting MEDM application was studied and the “IPC + UMAC motion controller” architecture was presented. And then, the integration method and principle, that the motion system, WEDG (Wire Electrical Discharge Grinding) system, coolant system, visual supervising and measuring system, micro-energy pulse Generator with NC, were investigated. Based on the PComm32, control software with general NC machine tool HMI style, was developed and whole machine tool was integrated successfully. At last, a lot of experiments were carried out, and the results demonstrated that the MEDM machine tool has the capabilities of manufacturing micro- electrode, micro hole, complex 2D micro workpiece and milling 3D model.

Research on Micro EDM Machine Tool for Machining Micro Array Holes

2012 ◽  
Vol 472-475 ◽  
pp. 2401-2404 ◽  
Author(s):  
Guo Zheng Zhu ◽  
Ji Cheng Bai ◽  
Yong Feng Guo ◽  
Peng Ju Hou ◽  
Chao Jiang Li
Keyword(s):  
Machine Tool ◽  
Electrical Discharge ◽  
Pulse Generator ◽  
Electrical Discharge Machining ◽  
Micro Edm ◽  
Generator System ◽  
Micro Nozzle ◽  
Micro Electrical Discharge Machining ◽  
Micro Array ◽  
New Type

As demands for the micro array holes in modern industry and the characteristics of micro Electrical Discharge Machining (micro EDM), a new type micro EDM machine tool used to machine micro array holes was designed and manufactured. The machine tool contains following systems: the mechanism system, the control system, the pulse generator system and other auxiliary systems. Each system was studied respectively. Base on a large number of experiments, finally, a sample with 256 array holes was processed by the machine tool. The diameter of single hole is 45µm and precision of the holes is ±1µm. The sample has been successfully applied to R & D test of micro nozzle components

Porting of EtherCAT Soft Master and Developing of a New Type of Open Motion Controller

2010 ◽  
Vol 34-35 ◽  
pp. 961-965
Author(s):  
Chun Min Ma ◽  
Jian Wu Yang ◽  
Ren Yuan Fei
Keyword(s):  
Intellectual Property ◽  
Open Source ◽  
Source Code ◽  
Numerical Control ◽  
Open Architecture ◽  
Motion Controller ◽  
Field Bus ◽  
New Type

It is an expectation of most of the numerical control products manufacturer that have a powerful controller with whole won intellectual property and without restriction from other companies. The paper introduces a new type of motion controller that based on ARM and EtherCAT field bus. It concludes the analysis and porting method of the EtherCAT soft master source code, and how to modify the driver of dm9000 to make EtherCAT master works correctly. It also gives an example to confirm the reliability of the controller. Since ARM has an open architecture, EtherCAT soft master does not depend on any special hardware card, and Linux OS is an open source system, this controller has open and flexible characteristic both on hardware and software.

Error correction technique for numerical control machine tools based on the simplex method

2021 ◽  
pp. 095440542110281
Author(s):  
Hongwei Liu ◽  
Rui Yang ◽  
Pingjiang Wang ◽  
Jihong Chen ◽  
Hua Xiang
Keyword(s):  
Machine Tool ◽  
Error Compensation ◽  
Simplex Method ◽  
Tool Path ◽  
Repeated Measurements ◽  
Numerical Control ◽  
Machining Accuracy ◽  
Correction Technique ◽  
Fluctuation Range ◽  
Nc Machine

The objective of this research is to develop a novel correction mechanism to reduce the fluctuation range of tools in numerical control (NC) machining. Error compensation is an effective method to improve the machining accuracy of a machine tool. If the difference between two adjacent compensation data is too large, the fluctuation range of the tool will increase, which will seriously affect the surface quality of the machined parts in mechanical machining. The methodology used in compensation data processing is a simplex method of linear programming. This method reduces the fluctuation range of the tool and optimizes the tool path. The important aspect of software error compensation is to modify the initial compensation data by using an iterative method, and then the corrected tool path data are converted into actual compensated NC codes by using a postprocessor, which is implemented on the compensation module to ensure a smooth running path of the tool. The generated, calibrated, and amended NC codes were immediately fed to the machine tool controller. This technique was verified by using repeated measurements. The results of the experiments demonstrate efficient compensation and significant improvement in the machining accuracy of the NC machine tool.

scholarly journals Lightweight Unmanned Aerial System for Time-Domain Electromagnetic Prospecting—The Next Stage in Applied UAV-Geophysics

2021 ◽  
Vol 11 (5) ◽  
pp. 2060 ◽  
Author(s):  
Alexander Parshin ◽  
Ayur Bashkeev ◽  
Yuriy Davidenko ◽  
Marina Persova ◽  
Sergey Iakovlev ◽  
...  
Keyword(s):  
Time Domain ◽  
Gamma Ray ◽  
Pulse Generator ◽  
Measuring System ◽  
Electromagnetic Sounding ◽  
Mountainous Regions ◽  
Time Domain Electromagnetic ◽  
Unmanned System ◽  
Classical Triad ◽  
The Time Domain

Nowadays in solving geological problems, the technologies of UAV-geophysics, primarily magnetic and gamma surveys, are being increasingly used. However, for the formation of the classical triad of airborne geophysics methods in the UAV version, there was not enough technology for UAV-electromagnetic sounding, which would allow studying the geological environment at depths of tens and hundreds of meters with high detail. This article describes apparently the first technology of UAV-electromagnetic sounding in the time domain (TDEM, TEM), implemented as an unmanned system based on a light multi-rotor UAV. A measuring system with an inductive sensor—an analogue of a 20 × 20 or 50 × 50 m receiving loop is towed by a UAV, and a galvanically grounded power transmitter is on the ground and connected to a pulse generator. The survey is carried out along a network of parallel lines at low altitude with a terrain draping at a speed of 7–8 m/s, the maximum distance of the UAV’s departure from the transmitter line can reach several kilometers, thus the created technology is optimal for performing detailed areal electromagnetic soundings in areas of several square kilometers. The results of the use of the unmanned system (UAS) in real conditions of the mountainous regions of Eastern Siberia are presented. Based on the obtained data, the sensitivity of the system was simulated and it was shown that the developed technology allows one to collect informative data and create geophysical sections and maps of electrical resistivity in various geological situations. According to the authors, the emergence of UAV-TEM systems in the near future will significantly affect the practice of geophysical work, as it was earlier with UAV-magnetic prospecting and gamma-ray survey.

Evaluation of Surface Finish of Electrical Discharge Machined AISI 304 Stainless Steel with Various Pulse Generators

2015 ◽  
Vol 772 ◽  
pp. 279-283 ◽  
Author(s):  
T. Muthuramalingam ◽  
B. Mohan ◽  
D. Saravanakumar
Keyword(s):  
Electrical Discharge ◽  
Pulse Train ◽  
Pulse Generator ◽  
Machining Process ◽  
304 Stainless Steel ◽  
Aisi 304 Stainless Steel ◽  
Aisi 304 ◽  
Pulse Generators ◽  
Crater Size ◽  
Energy Pulse

The performance improvement in Electrical Discharge Machining process is a tedious one in materials and manufacturing processes especially in making of complex die and moulds. Due to non linear nature of this process, conventional pulse generators such as RC pulse generator and transistor pulse train generator cannot produce uniform energy distribution. Since RC pulse generator can produce smaller crater volume, it can make better surface finish than transistor pulse train generator crater size is influenced by the discharge current produced during the machining process. Due to its stochastic behavior, the discharge current is varied for every spark. The modified iso current pulse generator can produce uniform energy distribution with smaller crater size. In this study, EDM drilling experiments have been conducted on AISI 304 stainless steel with the RC pulse generator, Transistor pulse generator and iso energy pulse generator in electrical erosion process. The effects of these pulse generators on surface characterization have been evaluated and analyzed. From the evaluation results, it has been detected that the iso energy pulse generator has produced better surface structure than conventional pulse generators.

scholarly journals Design and Evaluation of a New-Type Multifunctional Machine Tool. Functional Requirements and Design.

1996 ◽  
Vol 62 (595) ◽  
pp. 1133-1138
Author(s):  
Nobuhiro SUGIMURA ◽  
Shigeru UENO ◽  
Nozomi MISHIMA ◽  
Soichi HACHIGA
Keyword(s):  
Machine Tool ◽  
Functional Requirements ◽  
New Type

Model Research on Special Metal Cutting NC Machine Tool

2007 ◽  
Vol 10-12 ◽  
pp. 806-811
Author(s):  
Tong Zhao ◽  
P.Q. Ye ◽  
H. Zhang ◽  
X.K. Wang
Keyword(s):  
Machine Tool ◽  
Metal Cutting ◽  
Relation Module ◽  
Nc Machine Tool ◽  
Model Research ◽  
Unit Model ◽  
Proposed Model ◽  
Control Research ◽  
Function Unit ◽  
Nc Machine

In this paper the model of special metal cutting NC machine Tool is presented, which consists of a base module, an overall control module, particular functional modules as well as a relation module. Each module involved in aforementioned model will be composed by software, hardware and mechanical parts, so as to combine the convergence of the ideas of modularization and mechanical-electrical integration into current understanding of special NC machine tool through the proposed model. Specially, the relation module is introduced to deal with the linking among all the other modules. The presented model aims to broaden the perspective of machine designers intending to increase the efficiency in machine design. By giving the so-called function unit model a novel modeling approach is delivered to carry out control research of special metal cutting NC machine, which is followed by the formalization description method presented as a possible abstraction methodology towards the efficient description and identification of special metal cutting NC machine tool.

A Low-Cost and High-Resolution Micro Machine Tool With Toggle-Based Mechanism

2014 ◽  
Author(s):  
Shih-Ming Wang ◽  
Chih-Peng Yang ◽  
Zhe-Zhi Ye ◽  
Chuntai Yen
Keyword(s):  
Machine Tool ◽  
Low Cost ◽  
Dynamic Compliance ◽  
Cnc Machine ◽  
Positioning Accuracy ◽  
New Type ◽  
Weight Structure ◽  
Micro Machine ◽  
Fine Resolution ◽  
Micro Machine Tool

The products of 3C, bioscience, medical industry, and aerospace industry are becoming smaller and smaller. The components of the products are made of various materials with complex 3D shapes requiring high accuracy in their dimensions and contours. An accurate micro-/meso-scale CNC machine tool is an essential part of this technology. A new type of CNC micro machine tool with a toggle-like mechanism having the characteristics of low-cost and fine-resolution was developed. With geometric reduction principle, the machine can provide finer feed resolution and better positioning accuracy without using high-end driving components and controller. The kinematics model and characteristics of the machine were derived and analyzed. Modal analysis and dynamic compliance analysis were employed to design a light-weight structure with good stiffness. The accuracy calibration results showed the machine can reach a positioning accuracy of 500 nm. Prototype of the machine was built, and furthermore some micro machining examples were demonstrated in this paper.

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