The direct modelling tools give you a lot of control over edits, but also store those edits as part of the history tree for later edits or paramterisationĭirect edits are added to the feature tree and their values can be driven from the parameters manager. It is intuitive and slick with great feature recognition. SolidWorks, Solid Edge and Creo all have direct modelling strategies, so it is about time Inventor kept up! I really like the way that direct modelling has been implemented in Inventor. Direct editing isn’t a new idea, but SpaceClaim showed how it should be done. SpaceClaim threw down the gauntlet back in 2005 and opened up a whole new market. Have you been following the debate around history vs. Those of you who have been hammering out T-Splines in Fusion 360 for some time may feel a little hampered. This introductory tool set is great for new users who need to learn this new way of thinking. If you’ve never modelled with T-Splines before you’ll get along with Freeform just fine. What we do have is a functional set of tools that just about make Freeforms useable. Handy tools such as ‘make uniform’ and divide face by point are missing. On exiting the Freeform environment the T-Splines surface is smoothly converted to a ‘solid’ body and further edits can be carried out using Inventor’s regular solid and surface modelling tools.ĭespite the fact that the Freeform environment opens whole new workflows for organic shape design in Inventor, I’m disappointed in how little of the original feature set from Rhino has been implemented.Īutodesk has already successfully implemented T-Splines into its flagship web based CAD package - Fusion 360, so our appetite has been whetted with the possibilities Freeform T-Splines, in this current Inventor implementation, are restricted to closed bodies only - so no open surfaces.įreeforms can’t be built from sketches and there is no ‘cage’ view. This is more efficient than regular SubD modellers, which need to subdivide the whole surface to add detail.įreeform bodies are non-parametric, but do exist in the feature tree. add faces and edges) in areas that require more refined surface curves. T-Splines are an extremely clever addition to subdivision modelling that uses ‘T’ points and ‘Star points’ to add detail (i.e. The biggest plus is that subdivision surfaces rarely fail, which makes complex part modelling a lot less prone to feature tree explosions. While it’s hard to get a subdivision surface to be as accurate as a surface built using traditional sketches and surface features, subdivision surfacing is quick and intuitive. Note: Interference can also be detected when driving constraints." (Autodesk Inventor 6 Essentials with Autodesk Inventor 7 Update by Banach, p.Direct modelling tools enable the quick editing of geometry without hacking back through the history tree or on imported geometry After analyzing and finding interference, edit the components to remove the interference. When the operation is complete, click the OK button and the interfering solid will be removed from the screen. The interference report can be copied to the clipboard or printed from the tools in the Interference Detected dialog box. A temporary solid will also be created in the graphics window that represents the interference. The information in the dialog box defines the X, Y, Z coordinates of the centroid of the interfering volume, and lists the volume of the interference. If interference is found, the Interference Detected dialog box will appear, as shown in the following image. The order in which the components are selected has no significance. "Once the sets are defined, click the OK button.Default installation folder for the Thread.xls is found in //C:\Users\Public\Documents\Autodesk\Inventor 2014\Design Data\XLSen-USThread.xls//.Accept the warning message and then modify the thread feature to a size that fits the corresponding diameter." (Autodesk Inventor 6 Essentials with Autodesk Inventor 7 Update by Banach, p. ![]() The dialog box notifies you that an inappropriate thread size is used. If a dimensional change is made to the diameter of the cylinders where a thread has been placed, a warning dialog box is displayed when the part is updated. ![]() When changes are made to the spreadsheet, the new values are only used when new threads area created. The thread data is not associative to the threads on existing parts. The thread data is used to display the thread on the part and when the thread is annotated in a drawing view. This spreadsheet can be modified to match your company's standards. By default, the spreadsheet is located in the Program FilesAutodeskInventor Design Data directory. The thread data comes from an Excel spreadsheet named Thread.xls. "There are two tabs in the Thread Feature dialog-each is described below.
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