CNC Introduction - CNC

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Introduction about CNC and EMC2

Zhang [email protected]

Distributed & Embedded Systems Lab

Lanzhou Universtiy, P.R.Chinadslab.lzu.edu.cn

2007.6.7

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Content

What is CNC

EMC & EMC2 introduction

RS274/NGC language introduction

What we do for CNC and EMC2

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What is CNC

Computer Numerical Control Control automatically Manufacture complex parts Compare with NC

Easy to control Process various materials and shapes

Widely used

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What is EMC

Enhanced Machine Controller Free and open source CNC controller program Control automated devices

Robot ...

Control the devices related to machine tools Step motor Servo motor ...

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Comparison

Traditional CNC controller program Expensive Difficult to extend

Open Architecture EMC

Free Modularization Transportability

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EMC2 introduction New generation of EMC

Friendly interface Compiled on almost any real time linux Benefit from Linux

Stability Performance

Use CNC language RS274/NGC Can not take in CAD or any image

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Typical 3-axis EMC2 system

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EMC2 graphical interface

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Manual mode: Enter command separately

Auto mode: Run a whole file

MDI mode: Type in a block of code

Three major modes

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RS274/NGC language

Standardized language Based on lines of code Consists of one or more words

Word: letter + number Example: G0 X0 Y2

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Letters and their meanings

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Command

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Application demoG21 (mm)G17 (xy plane)

#100 = 200 (feed rate)#101 = 70 (x length)......

G0 Y0G0 X40G1 X#101 Y4.8 F#100......

M2

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Application demo

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What we do for CNC

New version of RTLinux

XtratuM to PowerPC

RTLinux to PowerPC

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Thanks!

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