CNC & Machine Controls

Computer Numerical Control.

Source: CNC Intro-The Key Concepts Of Computer Numerical Control

Computer numerical control (CNC) is the control of machining tools through automation or computer programming. A CNC machine follows coded instructions such as G-code and M-code. These instructions are typically written by a person or by CAD/CAM software. This allows for a highly automated process that can be more efficient than manual machining, providing users with better productivity, speed and accuracy. The most basic function of any CNC machine is automatic, precise, and consistent motion control. All forms of CNC equipment have two or more directions of motion, called axes. These axes can be precisely and automatically positioned along their lengths of travel. The two most common axis types are linear (driven along a straight path) and rotary (driven along a circular path).

Source: Key CNC Concept #1—The Fundamentals Of CNC

According to the Bureau of Labor Statistics (BLS), the mean annual wage of a CNC tool operator is $44,300 as of May 2020. The median wage is $42,260.

Further reading: New Apprenticeship Program At Hurco North America

5 Ways to Simplify Tasks for CNC Newcomers

Physics-Based Online Training in CNC Machining Available for Free Through DoD Initiative

Advanced CNC Training Program Teaches In-Demand Skills

1. Shop safety

First and foremost, newcomers to manufacturing must understand that the shop floor is a dangerous place. You must convey general concerns in two areas: safety equipment that workers use and safety practices to which they must adhere.

2. Shop math

The arithmetic that a typical CNC operator must be able to perform is simple. However, you must ensure that newcomers can use a calculator to add, subtract, multiply and divide.

3. Blueprint reading

Anyone working with CNC machines must be able to interpret a 3D workpiece from a series of 2D views on an engineering drawing. This involves understanding line types (visible, hidden, center, section, etc.) and orthographic projection.

4. Tolerance interpretation

Newcomers must understand that every workpiece attribute has an amount of allowable error, whether it be specified or implied.

5. Measuring devices

Explain the two basic types: fixed and variable gages. Go into detail for any fixed gages your CNC operators use, including go/no-go gages and gages that incorporate a dial indicator.

Source: 5 Things New CNC Machine Operators Must Know