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CAD, CAM and shop data exchange · Lesson 1 of 4

CAD, CAM and shop data exchange: principles and terminology

What CAD, CAM and data exchange mean in a flashing shop, what each common file format carries, how a profile is written as a folder feature list and reaches a machine, and why guarding stays on whatever the file says.

You will be able to: Name what DXF, DWG, IFC and PDF files carry, explain how a flashing drawing becomes the ordered bend data a CNC folder runs, and state the guarding rule that applies when data drives a powered machine.

11 min · 10 slides · 8 questions

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Slide 1 of 10

Why data exchange matters

Data exchange means moving a design from one program to another, or from the office to a machine, in a form both ends read the same way.

Retyping is a chance for an error, so a good exchange moves the design without retyping.

At AFS a profile drawn in FlashDraft is checked against AFS's fabrication limits, and the same legs, bends and hems travel on toward the folder.

Sources

Videos for this lesson

What this video shows: AMS Controls demonstrates its folder control's automatic sequencing processing a simple coping cap. Not AFS's equipment or software.

Video: Creating a New Part - Coping Cap by AMS Controls, on YouTube. AFS checked its description against this lesson.

What this video shows: AMS Controls shows a new part created and produced on its folder control without working out the bend sequence, and what the operator sees. Not AFS's equipment.

Video: AMS Controls, Pathfinder, and SmartPath by AMS Controls, on YouTube. AFS checked its description against this lesson.

What this video shows: buildingSMART's technical director explains the openBIM workflow: requirements, an IFC model, validation and issue reporting.

Video: buildingSMART's openBIM workflow explained by Léon van Berlo by buildingSMART International, on YouTube. AFS checked its description against this lesson.

Glossary

CAM
Computer-aided manufacturing: turning a design into the instructions a machine runs. For a sheet metal folder, the ordered straights, bends and hems of a profile.
DXF
Autodesk's tagged-data form of an AutoCAD drawing: group-code and value pairs arranged in sections, written as ASCII text or in a binary form.
Group code
In a DXF file, the number before each value that says what the value is; for example code 8 is a layer name and codes 10 and 20 are the X and Y of a lightweight polyline's vertex.
IFC
Industry Foundation Classes: the open international standard for building information model data, published as ISO 16739-1:2024.
Feature list
A folder profile written as data, as AMS Controls documents it: an ordered list that alternates Straight with a bend or hem and starts and ends with a Straight.
Catalog
In AMS Controls PathfinderEdge, a group of profiles; a machine receives only the catalogs subscribed for it.