SwiftCAD: browser CAD for gears and drivetrains

SwiftCAD designs involute gear trains in the browser and exports them to CAD, starting with planetary (epicyclic) gear sets, spur or helical. Pick tooth counts and a module or diametral pitch, and it computes true involute tooth flanks with trochoidal root fillets, checks that the set will assemble, animates it in 2D and 3D, rates the teeth for strength, and exports files ready for CNC machining, laser cutting or 3D printing.

• Planetary gear ratio calculator for any choice of fixed and input member
• Spur and helical gears in metric module or inch diametral pitch, with pressure angle, profile shift and backlash
• Undercut, contact ratio and assembly checks: coaxial, equal spacing and planet clearance
• AGMA 2001 bending and contact stress with AGMA 908 J and I factors, planet load sharing and design factors
• Export to STEP, STL, DXF and SVG