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Assessment Name: Machining: Machine Operator
Number of Questions: 87
Description: Working knowledge necessary for basic operation of metal cutting machines, including workholding, CNC controls, and manual machining.
Instructions: This online test requires uninterrupted access to a computer with an Internet connection. For math-related questions, please have paper and pencils on hand for your calculations. Textbooks, calculators, and other electronic devices are NOT allowed.

The assessment covers the following classes:

Class Functional Area Format Difficulty Version Department
123
Classes 1 to 10 of 22
Introduction to CNC Machines 201

“Intro to CNC Machines” provides a comprehensive introduction to computer numerical control (CNC), which uses numerical data to control a machine. CNC machines rely on a system of three linear and three rotational axes in order to calculate the motion ...

Machining Online Intermediate 2.0 CNC
Basics of the CNC Lathe 211

“Basics of the CNC Lathe” explains the components and functions of both the chucker and bar machine CNC lathe varieties. CNC lathes have spindles that spin workpieces held in chucks or collets. A carriage and cross slide move along ways ...

Machining Online Intermediate 2.0 CNC
Basics of the CNC Mill 212

“Basics of the CNC Mill” explains the components and function of CNC mills. A CNC mill produces flat or curved surfaces on square or rectangular workpieces. CNC mills may have a vertical spindle or a horizontal spindle and either their ...

Machining Online Intermediate 2.0 CNC
Coordinates for the CNC Lathe 221

"Coordinates for the CNC Lathe" provides an overview of the coordinates used to program cutting operations on CNC lathes or turning centers. It introduces the systems of both Cartesian and polar coordinates and describes how Cartesian axes are used on ...

Machining Online Intermediate 2.0 CNC
Coordinates for the CNC Mill 222

"Coordinates for the CNC Mill" provides an overview of the coordinates used to program cutting operations on CNC mills or machining centers. It introduces the systems of both Cartesian and polar coordinates and explains the Cartesian axes for vertical and ...

Machining Online Intermediate 2.0 CNC
Basics of G Code Programming 231

“Basics of G Code Programming” provides a comprehensive introduction to G code programming. Programmers use G codes to create part programs, which direct CNC machines to create a part. Part programs consist of blocks, which contain words that are a ...

Machining Online Intermediate 2.0 CNC
Control Panel Functions for the CNC Lathe 251

“Control Panel Functions for the CNC Lathe” explains how operators use the machine and control panel functions to operate a CNC lathe. Operators use the handle and jog modes to move a turret or machine spindle incrementally or steadily. MDI ...

Machining Online Intermediate 2.0 CNC
Control Panel Functions for the CNC Mill 252

“Control Panel Functions for the CNC Mill” explains how operators use the machine and control panel functions to operate a CNC mill. Operators use the handle and jog mode to move mill axes incrementally or steadily. MDI mode executes isolated ...

Machining Online Intermediate 2.0 CNC
Offsets on the CNC Lathe 261

"Offsets on the CNC Lathe" provides explanations of the concept, purpose, and use of offsets on a CNC lathe or turning center. The workshift, geometry, and wear offsets are essential components of any part program. The class first introduces the ...

Machining Online Intermediate 2.0 CNC
Offsets on the CNC Mill 262

"Offsets on the CNC Mill" provides an explanation of the concept, purpose, and use of offsets on the CNC mill or machining center and details the movements and programming involved with each type of offset. The workshift, tool length, and ...

Machining Online Intermediate 2.0 CNC