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Modified Design of Micro-milling Machine Tool and Numerical Control System Development

Author: XieShuMin
Tutor: ShiJiaShun
School: Northeastern University
Course: Mechanical Manufacturing and Automation
Keywords: micro-milling micro-milling machine tool NC system G code translation
CLC: TG547
Type: Master's thesis
Year: 2009
Downloads: 86
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Abstract

With the rapid development of science technology at the twenty first century, miniaturized components played greatly important role in many future technical development areas, increasingly demand for especially in aerospace, biomedicines, electron communication, precision instrument, home appliances and automobile and so on. Micro-milling is one of the most important machining techniques. This technique which is greatly suit for the process of the complicated miniaturized components and miniaturized mould, which has three dimension configuration and curved face. And the technique has better flexible and has advantage in high efficiency, high-precision and low cost. The material of the work piece is diversity. Micro-milling has very widely applicable foreground because of the dominance status in micro-milling machining technique.As the reason of miniaturized components owns complicated, the process which machining the curve face needs new requirement for multi-axes linkage process function. In order to satisfy the needs for the complication of the production configuration, improve the experimental study of the micro-milling mechanism, the text combines with the lab micro-milling item, at the foundation of the research fruit with discussion group, we have designed the 4-axis linkage micro-milling machine tool which has the compound function of cutting and milling, and also developed corresponding numerical control, all the content are as follows:(1) At the foundation of four-ax micro-milling machining technical characteristics and requirements which are all analyzed, applied direct graph theory to structure style of machine and then select the most optimization, improve on the 3-axis micro-milling machine tool which located in laboratory, design a new machine tool which is suitable for 4-axis micro-milling, make the 4-axis linkage process true.(2) Analysis the shock excitation theory of the dynamics identity in 4-axis micro-milling machine tool, construct flexible model and vibration model of the 4-axis micro-milling machine tool in ADAMS software, form an vibration system which has rigid and flexible coupling feature. The system produces displacement response and acquires test characteristic of the machine tool shock excitation, when the system come under shock excitation force, all these supply reference for the future improve configuration with the machine tool.(3) According to the experimental requirement of the 4-axis micro-milling process, after the foundation of analyzed numerical control software of the 3-axis micro-milling machine tool which is inhered, make use of VB to renewably exploder the numerical software of the machine tool, design the man-machine interactive system which is easy to manipulated. The software take modularization design idea, which contains communication and parameter setting, state appearance, manual and automatic machining module. The software can implement real time vision and system state display of the microscope image, and also own the 4-axis numerical control process function which is executed by single step and continuous steps.(4) Translate and edit the G and M code which is unrealized for the former machine tool, transfer them to 6K which is as controller language and then transmit it to controller, make the numerical control system function of 4-axis micro-milling more perfect and sufficiency.

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Milling and milling machine > Program control milling machine and CNC milling machine
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