Mechanical Smart Lock CAD Design

I already have the full electronics worked out for a rechargeable, time-based smart-key system; now I need the mechanical side brought to life and documented so a machining house can move straight into mass production... (Budget: $30 - $250 USD, Jobs: 3D CAD, 3D Design, 3D Modelling, CAD/CAM, Electronic Design, Manufacturing Design, Mechanical Design, Mechatronics, Product Design, Solidworks)