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Assessment Name: Machining: Comprehensive: CNC Machinist
Number of Questions: 194
Description: Intensive overview of skills necessary for CNC machining, including workholding, math, inspection, safety, metal cutting, materials, quality, and grinding.
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
Classes 1 to 10 of 182
Grinding Processes 201

"Grinding Processes" provides a comprehensive overview of the various types of grinding used in modern manufacturing environments. Surface, cylindrical, centerless, and internal grinding processes are commonly used for workpieces of various shapes. Surface grinding is further distinguished by whether the ...

Machining Online Intermediate 2.0 Abrasives
Grinding Safety 211

"Grinding Safety" provides an overview of safety concerns and precautions for grinding operations. Grinding machines, wheels, and fluids pose a number of safety hazards, so operators must take proper preventative measures. Wheel guards can protect grinding operators from flying shards ...

Machining Online Intermediate 2.0 Abrasives
Basics of the Surface Grinder 231

The class "Basics of the Surface Grinder" provides an overview of the components, considerations, and varieties of the surface grinding machine. Surface grinders are classified by their table types and spindle orientations, and vary in levels of automation. Wheels, workholding ...

Machining Online Intermediate 2.0 Abrasives
Setup for the Surface Grinder 241

"Setup for the Surface Grinder" provides a comprehensive overview of the steps and considerations involved in setting up a surface grinding machine. Setup includes selecting a grinding wheel, testing and preparing the wheel, selecting the correct workholding and/or fixtures for ...

Machining Online Intermediate 2.0 Abrasives
Surface Grinder Operation 251

The class "Surface Grinder Operation" provides step-by-step guidelines on how to grind a rectangular workpiece. Grinding each side of a workpiece requires wheel dressing and other preparatory steps, and then roughing and finishing passes. Workpiece sides are numbered from 1 ...

Machining Online Intermediate 2.0 Abrasives
Introduction to Grinding Fluids 261

"Introduction to Grinding Fluids" provides an overview of the uses, types, and selection considerations of grinding fluids, or coolants, used in various machining operations. Appropriate grinding fluid use depends on the type of operation, machine tool, and combination of tool ...

Machining Online Intermediate 2.0 Abrasives
Grinding Ferrous Metals 311

"Grinding Ferrous Metals" provides an in-depth overview of the considerations involved with grinding various ferrous metal workpiece materials. Ferrous metals’ properties vary widely. This class discusses the properties of cast irons, carbon steel, alloy steels, stainless steels, tool steels, and ...

Machining Online Advanced 2.0 Abrasives
Grinding Nonferrous Materials 321

The class "Grinding Nonferrous Materials" provides an in-depth overview of the considerations for grinding nonferrous workpiece materials. Nonferrous materials vary widely in their composition and properties, and thus vary in the methods used to grind them. This class discusses the ...

Machining Online Advanced 2.0 Abrasives
Grinding Wheel Materials 331

"Grinding Wheel Materials" provides a detailed overview of the various abrasive and bond materials used in grinding wheels. The properties of the abrasive grains and bond material are important factors in any grinding operation. Abrasives vary not only in type ...

Machining Online Advanced 2.0 Abrasives
Grinding Wheel Geometry 361

“Grinding Wheel Geometry” provides an overview of common grinding wheel geometries according to American National Standards Institute (ANSI) standards. ANSI standards provide a common language for grinding wheels, including letter designations for each part of the wheel, as well as ...

Machining Online Advanced 2.0 Abrasives