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Translations:FCGear CrownGear/23/en

From FreeCAD Documentation
  • The Datapreview_mode property is set to true by default and when the gear is created you'll find this message in the report view:
    Gear module: Crown gear created, preview_mode = true for improved performance. Set preview_mode property to false when ready to cut teeth.
  • Datamodule (m): Using ISO (International Organization for Standardization) guidelines, Module size is designated as the unit representing gear tooth-sizes.
    • The module multiplied by the number of teeth (z) defines the pitch circle diameter (d): d=mz
    • The module multiplied by Pi (π) defines the pitch (p), the arc distance on the pitch circle between corresponding points of adjacent teeth: p=mπ
  • Dataother_teeth: Several pinions with the same number of teeth only can be used on one crown wheel.
  • Datapressure_angle: Only change the parameter, if sufficient knowledge of the gear geometry is available.
  • The geometry of the crown gear is primarily determined by the spur pinion geometry according to its number of teeth (thus represented by the Dataother_teeth property).
  • A matching spur gear can be created with Involute Gear. Its Datanum_teeth value must equal this crown gear's Dataother_teeth value.
  • Adjustments for optimal running characteristics can be made with the parameters of involute gear.