So any dimensional or coordinate value stored by the dxf file will be in millimeters.ĭefault drawing units for AutoCAD DesignCenter blocks: 0 = Unitless 1 = Inches 2 = Feet 3 = Miles 4 = Millimeters 5 = Centimeters 6 = Meters 7 = Kilometers 8 = Microinches 9 = Mils 10 = Yards 11 = Angstroms 12 = Nanometers 13 = Microns 14 = Decimeters 15 = Decameters 16 = Hectometers 17 = Gigameters 18 = Astronomical units 19 = Light years 20 = Parsecs Indicates that the dxf file is using metric units, specifically millimeters, as the base unit. If you go to the 'HEADER Section Group Codes' page, and search for 'units', you will be able to find the listing of all the unit types. The R2000 dxf spec, or any of the other versions, contain all the info you need on what those values mean. The Wikipedia article is outdated/incomplete.ĭXF files are by no means 'unitless', so in the case where you absolutely need to know the units, you will need to read the $INSUNITS group code value, and to double-check it, you can also read the $MEASUREMENT group code value. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist. You may also use "Start a topic" button to ask a new question. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. This thread is inactive and closed by the PTC Community Management Team. How do I tell CREO what units the DXF file is?Įither that, or once I get the DXF into CREO as a 2D outline, is there a way to scale it? No matter what I do, I get a gear that is way too small. I have tried setting File->Settings->System->Length to inches and mm.
I have tried editing the file at C:\Program Files\PTC\Creo Elements\Direct Modeling Express 6.0\dxfdwg\n, changing these two lines: If I set the units in creo to mm, the gear shows up as 1mm. If I set the units in creo to be inches, the gear shows up as 0.04". No matter what I do, it always shows up as a 1mm diameter gear. I select a workplane, select File->Open, in the popup, I select "File Type" to be "Import 2D to Workplane (.dxf.)". I then try to bring it into CREO using the instructions here: Create gears for 3D printing with PTC Creo Elements/Direct Modeling Express 6 and Gear Generator - Y. It draws a gear that is 1 inch in diameter. I set the units to inches, diametral pitch to 12, number of teeth to 12.
I am using "gear template generator" Gear template generator program to create a gear outline.
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