Programming instructions

ADT-CNC4620 Programming Manual
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1. Programming Basics
1.1. Introduction of CNC machine tool
CNC (Computer Numerical Controler) machine tool consists of CNC system, servo motor (or step
motor) drive, machine tool (including headstock, feed drive mechanism, worktable, tool holder,
electric control cabinet), etc. After CNC processing, the part program edited by the user will send
motion instructions and control instructions, while motion instructions drive the feeding of machine
tool through motor drive, and control instructions include principal axis start/stop, tool selection,
cooling, lubrication, etc. It achieves parts cutting through relative motion of tool and workpiece.
CNC programming is to write part processing program according to the dedicated programming
instructions of CNC system with the information such as part size, processing process, process
parameters, tool parameters, etc. CNC processing is that the CNC system controls the machine tool
to finish part processing according to the requirement of part processing program. The working
principle of CNC machine tool and the flow of CNC processing are shown in the figure below.
Analyze part drawing and confirm process
Write part program and enter CNC system
Check and run the program for testing
Set tool offset and coordinates
Run the processing program and process the part
Check the workpiece size, modify program or tool conpensation
Processing is finished and part is formed
Fig. 1-1 CNC Processing Flow Chart