TJDrive is developed by transmission engineers who also deliver real design projects. The same calculation kernel drives the geometry, the strength check, the generated drawing and the exported tooth coordinates — so what you see is what gets machined.
Built around the questions an engineer actually asks.
Tool-tip trochoid root fillet generation, exact conjugate tooth form, coordinate-point export for grinding / CMM / 5-axis work.
Module, profile shift and helix angle solved from measured span / over-pins / tip / root diameters, with visible residuals.
Contact and bending safety factors, scuffing and micro-pitting estimates, film-thickness ratio and K-chart modification references.
DWG with a standard title block, 1:1 DXF for wire-cutting, PDF calculation sheets, STEP models and CSV coordinate points.
Enter CMM results and generate pitch / profile / helix deviation charts against GB/T 10095.1 tolerance bands.
Cylindrical, bevel, rack & pinion, worm, planetary, internal, spline, sprocket, pulley, timing pulley and more.
Read the assumptions before relying on a number.
An online manual with 57 screenshots is available here (Chinese interface). The free calculators below are a quick way to check the calculation style before evaluating the full package.