Gear drawings are generally provided in 2D CAD, 3D CAD, and print media formats, but on the KHK website it is also possible to output a drawing with the modifications applied to stock gears such as bore, keyway, and set screw hole part modifications. In either case, the gear drawing is indispensible.Īlthough this applies to machine elements in general, gear drawings must contain accurate descriptions of principle gear specifications such as number of teeth, pitch such as modules, pitch circle diameter (PCD), helix angle of helical teeth, value of tooth profile shifting, precision grade such as DIN and AGMA, geometrical tolerance, and roughness of surface.Īlso, because the strength to allow the torque required to transmit power through the gears is required, it is also necessary to accurately list the hardness of the gear, which is quantified in terms of gear material, tempering or lack thereof and tempering method, HRC and HB achieved after tempering, etc. When a machine designer requires a gear when designing a new machine, there are two possibilities: designing the new gear itself, and utilizing a standard gear which has already been designed. The following sections describe these processes.A gear drawing is a type of important technical reference required when designing machines. When you import an IFC project using the Merge command: You will choose an IFC Translator for Import from the current host project.When you import an IFC project using Open or Hotlink IFC: You will choose an IFC Translator for Import from an external Template file, selected by you.Important Note on Translators and Template Files The program examines the IFC data assigned to the incoming element, and attempts to generate the equivalent property value for the element in ARCHICAD (This is based on the Translator’s “Property Mapping for IFC Import” preset.) (This uses Property definitions of the Property Manager, in the template file used at import.)ħ. Each of these Element Properties is populated with its default Property value. Based on the Classification: which Properties are available for the element? (This uses the Property Availability definitions, defined in the Classification Manager of the template file used at import.)Ħ. Which ARCHICAD Classification should be assigned to the element? (This is based on the Translator’s “Type Mapping for IFC Import” preset.)ĥ. Which ARCHICAD layer should the element be placed on, and using which attributes? (This is based on the Translator’s “Material and Surface Conversion for IFC Import” preset.)Ĥ. Wall, Object) should be used to place the IFC element in ARCHICAD? (This is based on the Translator’s “Geometry Conversion for IFC Import” preset.)ģ. Does the IFC element need to be imported to ARCHICAD? (based on the Translator’s “Model Filter for IFC Import” presetĢ. When you open (or merge or hotlink) an IFC file in ARCHICAD, the program carries out the following steps for each imported IFC element, using the settings in the chosen IFC Translator for Import:ġ. Overview of IFC Import: Defining how IFC Data are Converted to ARCHICAD For the purposes of listing and searching, the elements’ original GlobalId values are also retained, in the form of a parameter called “External IFC ID”. In the Merge process, ARCHICAD automatically generates new IFC GlobalId (ARCHICAD IFC ID) values for all imported elements to avoid overwriting the IFC GlobalIDs of the host project. However, even in this “Reference model”, the merged elements are real ARCHICAD elements based on the IFC-ARCHICAD mapping convention. Merge preserves your running project, without overwriting its data (this is the “Reference model” concept). Inserts an IFC model in whole or in part into a running ARCHICAD project. Merge (File > Interoperability > Merge): Available only in Floor Plan view.ARCHICAD will transform the imported elements into corresponding ARCHICAD elements, based on settings in the chosen IFC Translator for Import. Open: Opens the entire model or filtered parts of an IFC file as a new project.ARCHICAD provides three methods for importing an IFC model to ARCHICAD: Open, Merge, and Hotlink.