Parametric bearing housing

thingiverse

Here is a parametric design of a bearing house with hex nuts inserted into pocketed recesses. The design is built on top of a non-parametric design created by Instructable user liquidhandwash for his 3D printed CNC mill, a machine made up of numerous parts. The box-like shape of the housing is determined by the parameters Width and Height, creating a three-dimensional structure that serves as a home for critical mechanical components. At the center of this box, there is a cylindrical recess that holds the bearing firmly in place; it's defined by two essential parameters: Bearing Outer Diameter and Bearing Height. The difference between the parameters Height and Bearing Height will directly affect the thickness of a "flange" at the bottom of the recess - a key design aspect of the overall housing. Furthermore, this flange has a cylindrical opening that is determined solely by the parameter Flange Inner Diameter. This entire design is constructed to be fastened securely through the use of four bolts and their corresponding hex nut pockets. The diameter of these bolts is controlled exclusively by the Bolt Diameter parameter. In addition, there is an offset value between the edge of the housing and the center of a bolt; this is determined by the parameter Bolt Center Distance From Edge. Finally, there are hex nut pocket dimensions that can be controlled independently via two separate parameters: Nut Height and Nut Diameter. However, one critical consideration to keep in mind when working with 3D printed materials is shrinkage. Depending on what kind of filament you use for your project, this might lead to problems where the bearing and hex nuts may not fit properly into place if they are press fitted tightly enough. Moreover, an extremely important aspect of maintaining a proper design is considering the correspondence between the model's dimensions and its actual physical form once printed. I've tried several methods, including linear assumptions about these correspondences, but have seen limited success. In this particular context, the process likely to lead you closest to optimal results involves using trial-and-error strategies to ensure that your design matches reality as closely as possible. Print Settings: *Rafts:* Yes *SUPPORTS*: Doesn't Matter