Free Gear Mesh Simulator | Dynamic Tooth Contact & Clearance Verification

Before wasting expensive raw stock or hours of 3D printing time, verify gear tooth engagement with GearDXF's interactive gear mesh simulator. Observe how involute tooth flanks slide and roll against each other along the common normal (line of action) to eliminate binding and interference.

Key Features

• High-resolution visual inspection of active tooth engagement and working depth
• Dynamic variable speed simulation: slow motion inspection to high-speed run
• Checks pitch circle tangency and backlash clearances visually
• Supports spur-to-spur, spur-to-internal, and spur-to-rack meshes
• Export mathematically verified geometry directly to production DXF
• Free, web-based, and requiring no specialized software

Frequently Asked Questions

What is the line of action in gear meshing?

The line of action (or pressure line) is the straight line tangent to both base circles along which the point of tooth contact moves during rotation. Force is transmitted strictly along this line.

How does the simulator show backlash?

When backlash is added, the space between non-driving tooth flanks expands. The simulator displays this physical clearance, verifying that teeth do not bind under manufacturing variations.

Can I zoom in to inspect microscopic tooth clearance?

Yes, use your mouse wheel or trackpad to pan and zoom smoothly into the tooth engagement zone.