Mechanical CAD & Gears
Involute spur gears, timing pulleys, ANSI/DIN pipe flanges, NEMA motor mounts, and VESA plates in 1:1 AutoCAD DXF. Customize any dimension in the Mechanical CAD Master Generator below, or download pre-built 1:1 .DXF, .SVG, and .PDF templates.
Mechanical CAD — Custom 1:1 CAD Generator (.DXF, .SVG, .PDF)
Parametric Involute Spur Gear & Center Bore CAD Generator (1:1 DXF & SVG)
- PASSClosed Outer Contours: 2 closed LWPOLYLINE cut loop(s) verified
- PASSZero Duplicate Cut Paths: 128 unique segments (0 laser double-burns)
- PASSFlute & Kerf Tolerance Guard: T=6.00mm, K=0.120mm within structural limits
- PASSISO Layer Color Separation: CUT (Red), CREASE (Blue), SCORE (Emerald), DIMENSIONS isolated
- PASS1:1 Physical Unit Header: Explicit mm/in SVG viewBox + DXF $INSUNITS=4 + 50mm PDF bar
- PASSExact 2D Cut Bounding Parity: Cut Bounds 103.78×103.78mm === Blank Size
- PASS2D ↔ 3D Kinematic Model Sync: Archetype 'spur_gear_flange' synced (1 3D component(s))
- PASSTrue Vector Sheet Nesting Sync: 1:1 vector paths mapped to multi-up sheet grid
All Mechanical CAD Generators
Involute Spur Gear CAD
Parametric Involute Spur Gear & Center Bore CAD Generator (1:1 DXF & SVG)
Designing a functional mechanical spur gear for laser cutting, CNC routing, waterjet, or 3D printing requires strict adherence to ISO 53 gear geometry where the Pitch Diameter (D_p), Tooth Count (Z), and Metric Module (m = D_p / Z) govern tooth meshing. Two gears will only mesh smoothly if they share the exact same Module (m) and Pressure Angle (20 degrees), with their center-to-center shaft distance set to (D_p1 + D_p2) / 2. Our parametric CAD engine generates a 100% closed outer tooth profile (`CUT` layer), concentric center shaft bore (`CUT` layer), and reference Pitch Circle (`CREASE` layer).
NEMA Stepper Motor Flange
Parametric NEMA 17 / 23 / 34 Stepper Motor Mount & Bolt-Circle Flange CAD Generator
Every CNC router, 3D printer, laser cutter, and robotics actuator relies on precision NEMA stepper motor mounting plates where the concentric Center Pilot Boss Bore (W) registers the motor shaft alignment and the 4-corner Bolt Hole Pitch Square (H) secures the motor body. Under NEMA ICS 16 standards, a NEMA 17 motor requires a 22.0mm center pilot bore with a 31.0mm bolt hole pitch, while a NEMA 23 motor requires a 38.1mm pilot bore with a 47.14mm bolt pitch. Our parametric CAD generator builds a chamfered 1:1 mounting plate in .DXF, .SVG, and .PDF.
Timing Belt Pulley & Sprocket
Synchronous Timing Belt Pulley & Keyed Shaft Sprocket Generator (GT2 / HTD DXF)
Synchronous timing belt pulleys (such as GT2, HTD 3M/5M, and XL profiles used in CNC machines, 3D printers, and robotics) require rounded root gullets and smooth crest transitions so the toothed elastomer belt engages with zero backlash. Our parametric timing pulley generator computes the exact circular tooth pitch (P = pi × D_p / N), traces a continuous closed sinusoidal-arc outer tooth profile, cuts a concentric shaft bore with an integrated DIN 6885 anti-rotation keyway slot, and adds 4 radial lightening holes on larger pulleys.
Ready-to-Download Templates in Mechanical CAD
ISO 53 Module 2.0, 24-Tooth Involute Spur Gear Profile (48mm Pitch Circle DXF & SVG)
48.0 mm Pitch Circle Diameter (52.0 mm Outside Diameter), Z=24 Teeth, Module m=2.0 mm, α=20°
NEMA 17 Stepper Motor Faceplate Mounting Plate (56x56mm Frame, Ø22mm Pilot Bore, 31mm Pitch)
NEMA ICS 16 Standard NEMA 17 Motor Faceplate (42.3mm Motor Body on 56x56mm Plate)
36-Tooth Synchronous Timing Belt Pulley (72mm Pitch Ø, 16mm Keyed Bore) — 1:1 DXF
36-Tooth Synchronous Pulley | Pitch Circle Ø72.0 mm | Circular Pitch 6.28 mm | 3.0–6.0 mm Face Width
NEMA 23 Stepper Motor Faceplate Mounting Bracket (68×68mm Plate, Ø38.1mm Pilot, 47.14mm Bolt Pitch)
NEMA ICS 16 Standard NEMA 23 Motor Faceplate (56.4mm Motor Body on 68×68mm Heavy Plate)
NEMA 34 High-Torque Industrial CNC Stepper Motor Flange Plate (69.6mm Bolt Pitch, Ø73mm Pilot)
Standard NEMA 34 Frame (86 × 86 mm Motor Face) with Ø73.0 mm Registration Pilot Boss
40-Tooth Synchronous Timing Belt Reduction Pulley (Ø80mm Pitch, Ø16mm Keyed Shaft Bore)
40-Tooth Synchronous Belt Driven Sprocket (Ø80.0 mm Pitch Circle, 6.28 mm Circular Pitch)
36-Tooth Heavy-Duty Involute Spur Gear Wheel (Ø90mm Pitch Diameter, Module 2.5, Ø20mm Bore)
ISO 53 Module m = 2.5 mm, Z = 36 Teeth, Pitch Circle Ø90.0 mm, Outside Tip Ø95.0 mm
Additional Parametric Models Scheduled for Mechanical CAD
ANSI / DIN Pipe Flange & Bolt Circle Gasket DXF Generator
Verification: Radial Bolt Clearance & Wall Margin Audit
NEMA 17 / 23 / 34 Stepper Motor Mount Plate DXF
Verification: NEMA Standard Hole Spacing Verification (31mm / 47.14mm)
Timing Belt Pulley (GT2 / HTD 3M / 5M) DXF Generator
Verification: Pitch Circumference = N_teeth * Pitch Proof