Compare Geometry Using SOLIDWORKS Utilities

Compare Geometry Using SOLIDWORKS Utilities
Posted in: Mechanical Design

For those of you who are not familiar with Utilities, it is one of the many useful Add-Ins that is now available in ALL versions of SOLIDWORKS 2016. Utilities contains a set of tools that allow you to analyze solid models, modify them, and compare them with one another. One of these tools is the Compare Tool, which can be used to compare two different SOLIDWORKS documents, drawings, BOMs, Features and Geometry between two versions of the same file, and identify the differences between them. In this blog, I’m going to focus on Compare Geometry.

Compare Geometry is used to analyze two versions of a file and quickly identify any geometric similarities and differences. This is a great tool that works well with imported files since it only examines the geometry, and not features of a part. It’s an easy way to compare different revisions of a file and understand design changes as well. Compare Geometry can be done in two ways: Volume Comparison and Face Comparison. Each of these will graphically show you common, unique, and modified volumes/faces of the files.

Before we use the tool, we can turn on the add-in by clicking Tools > Add-Ins, and check the box for Utilities. Or we can simply click on Tools > Compare > Geometry, and that will automatically enable the Add-In and activate the Compare tool. This will expand the tool in the Task Pane, where you can choose the two files you want to compare from the drop down menus for Reference document and Modified document. If you didn’t already, have the files open you can browse for them from this menu. Check the box for Geometry and click Run Comparison.

Geometry comparison check menu

Once the tool is done processing, you can view the results as a Volume Comparison or a Face Comparison. With the Volume comparison, you can view any combination of Material to Remove, Material to Add, or the Common Volume for each part by clicking the eye button next to each of the options. Each of these options are color coded and will highlight the different selections on each part.

Volume comparison menu

Additionally, when running a Volume Comparison, there is an option to Keep bodies on close. What this does is save each of the selected volumes as individual bodies in the part that you specify. This creates a Compare Volume folder in the respective part’s FeatureManager Design Tree, with subfolders for the volume that was added, removed, and shared. These bodies can be used for reference, and even used in a Boolean operation to combine into a single solid.

compare volume menu

Similar steps can be used with the Face Comparison option, where you can choose to highlight either Unchanged faces, Unique faces, or Modified faces.

volume comparison menu

These results can be saved in a Report as an HTML file by clicking on the Save icon at the top of the Compare Task Pane. This report contains summaries, details, and screenshots of the comparison, and can also be saved in the part’s Design Binder. And just like that, we can quickly see what the difference is between two versions of the same part. Stay tuned for the next blog, where I’ll discuss the Compare Feature tool. Also, don’t forget to check out our YouTube channel for more tips & tricks!

January 20, 2016
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