Convert JT to ASM

Understanding JT and ASM file formats

JT (Jupiter Tessellation) is a lightweight 3D model format developed by Siemens PLM Software. It is widely used for product visualization, collaboration, and CAD data exchange in industries such as automotive and aerospace. JT files can store geometry, topology, and product structure information, making them ideal for sharing complex assemblies without exposing proprietary CAD data.

ASM files are assembly files used by PTC Creo (formerly Pro/ENGINEER). These files contain information about how individual parts (PRT files) are assembled together, including constraints, relationships, and references. ASM files are essential for managing large assemblies in engineering and manufacturing workflows.

Why convert JT to ASM?

Converting a JT file to an ASM file is often necessary when you need to bring lightweight 3D data from a visualization or collaboration environment into a full-featured CAD system like PTC Creo for further design, analysis, or manufacturing preparation. This conversion enables seamless integration of external 3D data into your engineering workflow.

How to convert JT to ASM

Direct conversion from JT to ASM is not natively supported by most CAD software, as these formats are developed by different vendors. However, you can use specialized CAD data translation tools to achieve this conversion. The process typically involves importing the JT file into an intermediate CAD system or using a dedicated converter, then exporting the assembly as an ASM file.

Recommended software for JT to ASM conversion

• Siemens NX: Import the JT file using File → Import → JT, then export the assembly in a neutral format like STEP or IGES. Open the exported file in PTC Creo and save as ASM.
• PTC Creo (with JT Import extension): Use File → Open to import JT files directly if you have the JT Import extension. Then save the assembly as an ASM file.
• CAD Exchanger: A third-party tool that supports both JT and Creo ASM formats. Import the JT file and export as ASM.
• Datakit CrossManager: Supports direct conversion between JT and ASM formats. Simply select JT as the input and ASM as the output format.

Step-by-step conversion example using CAD Exchanger

1. Open CAD Exchanger and select File → Open to load your JT file.
2. Review the imported assembly structure and geometry.
3. Go to File → Export and choose PTC Creo ASM as the output format.
4. Save the file. You can now open the ASM file in PTC Creo for further work.

Tips and considerations

• Some data, such as parametric features or constraints, may not transfer perfectly due to format differences.
• Always verify the integrity of the converted assembly in PTC Creo.
• For best results, use the latest versions of both the source and target software.