The program machines a square contour and drills a hole | thecnc2020 blogspot.com
CNC Programming Language The program machines a square contour and drills a hole
In CNC specialized documents, provided by machine tool manufacturers to help us operate the machines in detail; But it is indispensable to prepare knowledge about Control Software. To process on CNC machines, we need simulation design, especially CAD/CAM design and simulation phase. Cimco edit and related modules help us a lot.
You can find this article again with keywords: Change Tool CNC Programming Language Machine Contour Move to Position The program machines a square contour and drills a hole
Upon successful completion of this lesson, you will be able to:
Define CNC Program.
List the sequence of operations in a typical CNC program.
List the most commonly used G-codes, their meaning, and syntax .
List the most commonly used M-codes, their meaning, and syntax.
List the most commonly used special characters in a CNC Program and their purpose.
Describe the organization, motion, and actions in a simple CNC program.
CNC Language and Structure
CNC programs list instructions to be performed in the order they are written. They read like a book, left to right and top-down. Each sentence in a CNC program is written on a separate line, called a Block. Blocks are arranged in a specific sequence that promotes safety, predictability and readability, so it is important to adhere to a standard program structure.
Typically, blocks are arranged in the following order:
Program Start
Load Tool
Spindle On
Coolant On
Rapid to position above part
Machining operation
Coolant Off
Spindle Off
Move to safe position
End program
The steps listed above represent the simplest type of CNC program, where only one tool is used and one operation performed. Programs that use multiple tools repeat steps two through nine for each.
Table 5.3 and Table 5.4 on section G & M Codes show the most common G and M codes that should be memorized if possible.
Like any language, the G-code language has rules. For example, some codes are modal, meaning they do not have to be repeated if they do not change between blocks. Some codes have different meanings depending on how and where there are used.
While these rules are covered in this chapter, do not concern yourself with learning every nuance of the language. It is the job of the job of the CAD/CAM software Post Processor to properly format and write the CNC program.
Program Format
The program in Table 5.1 below machines a square contour and drills a hole.
This is a program sample, to help you better understand the format of a CNC program.
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