Flanged Shaft Hub

Create a single parametric mechanical part: a flanged shaft hub. Use millimeters. Geometry requirements: 1. Create a cylindrical flange: • Outside diameter: 100 mm • Thickness: 12 mm 1. On the top face of the flange, create a concentric cylindrical hub: • Outside diameter: 50 mm • Height: 40 mm • The hub must be exactly concentric with the flange. 1. Create a central axial bore: • Diameter: 20 mm • The bore must pass through the entire part. 1. Create four mounting holes through the flange: • Hole diameter: 9 mm • Hole centers must lie on a 70 mm pitch circle diameter. • Holes must be equally spaced by 90 degrees. • Place the first hole on the positive X axis. • All four holes must pass completely through the flange. 1. Add a keyway inside the central bore: • Width: 6 mm • Radial depth: 3 mm • Position the keyway in the positive X direction. • The keyway must run through the full height of the hub. • Do not extend the keyway through the flange. 1. Add a 4 mm radius fillet around the external junction between the hub and the top surface of the flange. 2. Add a 1 mm × 45° chamfer to both ends of the central bore. Do not add any geometry that is not specified. The final object must remain an editable CAD solid rather than a mesh if the system supports parametric modeling. Use dimensional and geometric constraints where applicable. After creating the model, report: • overall part dimensions; • flange diameter and thickness; • hub diameter and height; • central bore diameter; • mounting-hole diameter; • mounting-hole coordinates or pitch circle diameter; • keyway dimensions; • fillet radius; • chamfer dimensions; • any assumptions you had to make while interpreting the request.

Parameters

Every value above is a live dimension. Open a model like this in the editor and each one becomes a slider you can drag before exporting.