Chapter List

Part Overview

SIMPLE PROGRAMMING

Simple programming consists of taking information from a part drawing and converting it into a form that can be transferred to a computer through the keyboard in a language designed for computer numerical control programming, Fig. 6-1. A program consists of a sequence of coded instructions of words, letters, symbols, etc., which cause a computer or CNC machine to carry out specific machining processes. The computer part program contains information about the machine and tools to be used, the details of the part required, and the path the cutter should take to machine the part. This computer program can then be sent directly to the machine tool for it to perform one or a series of operations or be stored for use any time in the future.

Figure 6-1: The basic steps in programming a part (Deckel Maho, Inc.)

The program is generally prepared by a person who is familiar with computer numerical control (CNC) language. The person who can take a part drawing (or print) of a workpiece, determine what sequence of machining operations are required, and prepare a computer numerical control (CNC) program is called a part programmer. To properly prepare a program for any CNC machine, the programmer must be familiar with the language that is common to CNC and the machine control unit (MCU). The part programmer should also be familiar with the proper metal-cutting processes and sequences and the...