CAD-to-CAM workflow in CNC Programming - Cheat Sheet & Quick Revision

Recall & Review

beginner

What does CAD stand for in the CAD-to-CAM workflow?

CAD stands for Computer-Aided Design. It is the process of creating detailed 2D or 3D models of parts or products using software.

beginner

What is the main purpose of CAM in the CAD-to-CAM workflow?

CAM stands for Computer-Aided Manufacturing. Its main purpose is to convert CAD designs into machine instructions (G-code) that control CNC machines to make the part.

beginner

Why is the CAD-to-CAM workflow important in manufacturing?

It allows designers and manufacturers to work efficiently by turning digital designs into physical parts quickly and accurately, reducing errors and saving time.

intermediate

What is a post-processor in the CAD-to-CAM workflow?

A post-processor is software that translates CAM toolpaths into specific machine code (like G-code) tailored for a particular CNC machine.

intermediate

Name two common file formats used to transfer CAD models to CAM software.

Common file formats include STEP (.step or .stp) and IGES (.iges or .igs). These formats preserve 3D geometry for CAM processing.

What is the first step in the CAD-to-CAM workflow?

A Post-processing the toolpaths

B Generating G-code in CAM software

C Running the CNC machine

D Creating a digital design in CAD software

The workflow starts by creating a digital design in CAD software before moving to CAM.

Which software converts CAD models into machine instructions?

A CAM software

B CNC controller

C Post-processor

D CAD software

CAM software generates toolpaths and machine instructions from CAD models.

What does a post-processor do in the CAD-to-CAM workflow?

A Designs the part

B Creates 3D models

C Converts toolpaths to machine-specific code

D Operates the CNC machine

The post-processor converts generic toolpaths into machine-specific G-code.

Which file format is commonly used to transfer 3D CAD models to CAM software?

A .step

B .docx

C .mp3

D .exe

STEP files (.step) are standard for 3D CAD model exchange.

Why is the CAD-to-CAM workflow beneficial?

A It increases manual work

B It speeds up design to production

C It removes the need for CNC machines

D It replaces CAD software

The workflow speeds up the process from design to manufacturing.

Explain the main steps involved in the CAD-to-CAM workflow.

Think about how a digital design becomes a physical part.

Describe the role of a post-processor in the CAD-to-CAM workflow and why it is necessary.

Consider how generic instructions become specific for each machine.