Design of Precision Micro-Milling Machine for Meso-Scaled Parts

2010 ◽  
Vol 29-32 ◽  
pp. 1068-1073
Author(s):  
Zi Yang Cao ◽  
Hua Li
Keyword(s):  
Machine Tool ◽  
High Speed ◽  
Milling Process ◽  
Micro Milling ◽  
Milling Machine ◽  
Cnc System ◽  
Industrial Control ◽  
C Programming ◽  
Control Computer ◽  
Industrial Control Computer

To create miniaturized components, a 3-axis micro-milling machine tool composed of linear motor stages, high-speed air-bearing spindle and motion control card DMC-1842 is developed in this paper. The CNC system of the parallel double CPU based on industrial control computer and Windows operating system is constructed. The application software of CNC system is exploited by modularized mind in C# programming language, reasonable human-computer interface is designed. Finally, in order to validate the performance of the micro-milling machine, the miniaturized parts are machined o by developed CNC system. Through these tests analysis, the hardware and software architecture of the CNC system is verified to meet the requirements of the micro-milling machine tool. Micro-milling process with developed micro-milling machine tool is proved to be feasible and applicable, and can fully satisfy the producing requires of miniaturized components.

Study on an Open CNC System of 3-Axis Micro Milling Machine Tool

2009 ◽  
Vol 69-70 ◽  
pp. 369-373 ◽  
Author(s):  
Liang Huang ◽  
Ning He ◽  
Liang Li
Keyword(s):  
Machine Tool ◽  
High Speed ◽  
Special Functions ◽  
Fast Response ◽  
Micro Milling ◽  
Milling Machine ◽  
Cnc System ◽  
Linear Motors ◽  
Open Cnc ◽  
Open Cnc System

The traditional CNC system is established on conventional machine tool mainly using ball screws. This could not suitable for micro mechanical machining with linear motor which could provide high speed, high precision, fast response and zero backlash. In this paper, a 3-axis micro milling machine tool with an open CNC system has been developed based on motion controller and linear motors. Considering the requirements of micro milling several special functions just like micro cutting tool setting are provided in exploited control software. The system dynamic characteristics are evaluated through experiments with servo parameters adjustments. In the following machining experiments, the whole system is proved economically and effectively.

Research of Micro Burr in Miniaturized Milling Process

2012 ◽  
Vol 566 ◽  
pp. 612-615 ◽  
Author(s):  
Zi Yang Cao ◽  
Hua Li
Keyword(s):  
Machine Tool ◽  
Three Dimensional ◽  
Influence Factors ◽  
Tool Material ◽  
Milling Process ◽  
Micro Milling ◽  
Burr Formation ◽  
Machining Parameters ◽  
Milling Machine ◽  
Milling Characteristics

The milling characteristics experiments with typical micro three dimensional parts are done by the developed 3-axis micro-milling machine tool, and the micro burr formed in micro-milling process is observed and analyzed. Burr formation and its influence factors in micro-milling process are studied and general influencing rule of each factor to burr formation is summarized. Based on the results, the purpose to reduce the burr is achieved through choosing proper machining parameters and tool material.

Design of a Three-Axis Desktop Micro Milling Machine Tool

2013 ◽  
Vol 589-590 ◽  
pp. 735-739 ◽  
Author(s):  
Xiang Cheng ◽  
Xian Hai Yang ◽  
Li Li ◽  
Jun Ying Liu
Keyword(s):  
Machine Tool ◽  
Three Dimensional ◽  
Milling Process ◽  
Micro Milling ◽  
Precision Machining ◽  
Milling Machine ◽  
Design And Optimization ◽  
Linear Motors ◽  
Ultra Precision ◽  
Open Control

Micro milling process is more favorite than other processes for its unique advantages in ultra-precision machining of miniature components with intricate three-dimensional geometrical feature made of various materials. Aiming at micro milling applications, a three-axis desktop milling machine tool with linear motors and nano-meter linear scales has been introduced. Natural granite is used as the frame material and air-bearing cylinders are used for z-axis gravity balancing. Finite element method is applied to the design and optimization of the machine structures. The designed machine adopts linear motors and 5nm resolution linear scale using an open control architecture. The workspace is 100mm×100mm×100mm and the overall size is 610mm×650mm×630mm. Experimental evaluations show the sub-micron machining feasibility of the introduced machine.

Experimental Research on Pulsating Two-Phase Flow Pressure Drop Characteristics in Horizontal Rectangular Channel

2014 ◽  
Author(s):  
Chong Zou ◽  
Puzhen Gao ◽  
Wei Pan ◽  
Zheng Yang ◽  
Xianbing Chen
Keyword(s):  
Control System ◽  
Rectangular Channel ◽  
Hysteresis Effect ◽  
Regulation System ◽  
Single Chip ◽  
Industrial Control ◽  
Correctional Programs ◽  
Control Computer ◽  
Industrial Control Computer ◽  
And Control

We preliminarily designed a power tracking and control system using single-chip computers and industrial control computer in the electric heating simulated power loop. The system is an innovational design based on the proven simulated nuclear power loop, with increased techniques of step-less power regulation system and modeling nuclear feedback effect correctional programs. We promoted both hardware and software designs of this power tracking and control system in this paper. It used single-chip computers as the core control chips and an industrial control computer as the additional correctional program and record carrier. The process and implementation of the control software are presented, which is designed as a fuzzy theoretical nonlinear system. In order to ensure the subsequent updates, the access interface of the system is open for following correctional programs, including the correctional program of void fraction effect, temperature effect, hysteresis effect and heat power distribution effect. Taken hysteresis effect correctional program as an example, we use an offset tic-tac clock replacing the inherent tic-tac clock in different devices of the system in order to reduce the hysteresis effect of measuring and corresponding errors. We also put out a preliminary analysis of the accurate synchronization for the system at the end of the paper.

Application of Siemens S7-300 PLC in the Thermal Power Plant Flue Gas Desulfurization Control System

2014 ◽  
Vol 511-512 ◽  
pp. 1123-1127
Author(s):  
Mei Long Ju ◽  
Xiu Qin Zhai ◽  
Qing Zhang
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Flue Gas ◽  
Thermal Power ◽  
Flue Gas Desulfurization ◽  
Industrial Control ◽  
Economic Operation ◽  
Control Computer ◽  
Industrial Control Computer

According to the characteristics of Wet Flue Gas Desulphurization (FGD), this paper brings forward the automatic control requirements and the control methods. The automatic control system is composed of a Programmable Logic Controller (PLC) and an industrial control computer (PC). The automatic control system can monitor the operating parameters of FGD system automatically and conduct automatic control and adjustment to FGD system. The PLC is responsible for the data collection and automatic control, while the PC is responsible for the surveillance of FGD system operation and the data processing through mutual communications between PC and PLC, which realizes the communication between human and machine and ensures the safe, stable and economic operation of the FGD system.

Research and Design of the PLC-Based Control System for Thermal Power Plant Flue Gas Desulfurization

2013 ◽  
Vol 805-806 ◽  
pp. 991-995
Author(s):  
Huo Jun Liu
Keyword(s):  
Control System ◽  
Automatic Control ◽  
Automatic Control System ◽  
Flue Gas ◽  
Thermal Power ◽  
Flue Gas Desulfurization ◽  
Industrial Control ◽  
Control Computer ◽  
Industrial Control Computer ◽  
Research And Design

According to the characteristics of Wet Flue Gas Desulphurization (FGD), this paper brings forward the automatic control requirements and the control methods. The automatic control system is composed of a Programmable Logic Controller (PLC) and an industrial control computer (PC). The automatic control system can monitor the operating parameters of FGD system automatically and conduct automatic control and adjustment to FGD system. The PLC is responsible for the data collection and automatic control, while the PC is responsible for the surveillance of FGD system operation and the data processing through mutual communications between PC and PLC, which realizes the communication between human and machine and ensures the safe, stable and economic operation of the FGD system.

Design of Special Fixture for Micro High Speed Motorized Spindle

2011 ◽  
Vol 228-229 ◽  
pp. 66-71
Author(s):  
Xiao Hong Lu ◽  
Zhen Yuan Jia ◽  
Zhi Cong Zhang ◽  
Xv Jia
Keyword(s):  
Finite Element Analysis ◽  
Finite Element ◽  
High Speed ◽  
Micro Milling ◽  
Machining Accuracy ◽  
Milling Machine ◽  
Cnc Milling ◽  
Analysis Method ◽  
Motorized Spindle ◽  
Element Analysis

The fixture of motorized spindle significantly affect the vibration of micro high speed CNC milling machine, its performance can directly affect the machining accuracy of the entire micro milling machine. A special fixture of high-speed motorized spindle is designed in the paper and its static characteristics are checked by utilizing ANSYS finite element analysis software. To guarantee the sufficient strength of bolts and the safety of motorized spindle when the motorized spindle runs at high speed, theory analysis method and ANSYS finite element analysis method are used to make the strength check of the fixture. The designed special fixture for high speed motorized spindle plays an important part in the design of high-speed motorized spindle.

Chatter Stability of Micro-Milling by Considering the Centrifugal Force and Gyroscopic Effect of the Spindle

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Xiaohong Lu ◽  
Zhenyuan Jia ◽  
Shengqian Liu ◽  
Kun Yang ◽  
Yixuan Feng ◽  
...  
Keyword(s):  
Centrifugal Force ◽  
High Speed ◽  
Beam Theory ◽  
Milling Process ◽  
System Structure ◽  
Micro Milling ◽  
Gyroscopic Effect ◽  
Good Surface ◽  
Receptance Coupling ◽  
Milling Tool

Abstract In the micro-milling process, the minimization of tool chatter is critical for good surface finish quality. The analysis of chatter requires an understanding of the milling tool as well as the dynamics of milling system structure. Frequency response function (FRF) at the micro-milling tool point reflects dynamic behavior of the whole micro-milling machine–spindle–tool system. However, the tool point FRF of micro-milling cannot be obtained directly through the hammering test. To solve the problem, the authors get the FRF of the spindle system based on the rotating Timoshenko beam theory and the receptance coupling substructure analysis (RCSA), and the bearing characteristics are added into the spindle model through structural modification. Then, the centrifugal force and gyroscopic effect caused by the high-speed rotation of the micro-milling spindle are considered to better simulate the real scenario and increase the accuracy of modal parameters. The method has general usage and can be applied to all the micro-milling tools under which only the spindle dimension, bearing characteristics, and contact parameters need to be changed.

Design of a Control System for a Turret Based Test Handler

2012 ◽  
Vol 201-202 ◽  
pp. 131-134
Author(s):  
Zhi Sheng Zhang ◽  
Fan He
Keyword(s):  
Control System ◽  
Object Oriented Programming ◽  
General Control ◽  
Industrial Control ◽  
Testing Procedures ◽  
Control Computer ◽  
General Kind ◽  
Industrial Control Computer ◽  
Special Control

Final testing procedures are performed to assure the quality of manufactured parts before their shipping to customers. Turret based test handler is a general kind of IC Test Handler for final testing. This paper discusses how to develop a general control system for a test handler of turret style in which every workstation moves up and down separately based on an industrial control computer. The combination of object-oriented programming and the cycling scanning working mode is the key of the whole system. To achieve ideal performance, special control flags are designed as an efficient way for making all the workstations work as setting orders stably. The method to developing the control system in this paper can be also applied to similar systems, which would greatly reduce development cycles. A turret based test handler with this control system has passed the test of a semiconductor factory and operates well in actual production.

Sign in / Sign up

Export Citation Format

Share Document