GrabCAD 模型信息
2 stage reduction gearbox. spur gears · 模型 310997
1. Concept of 2-Stage Spur Gear Reduction A gear reduction gearbox reduces the speed of the input shaft and increases torque. In a 2-stage spur gearbox, reduction happens in two steps: Stage 1: Small pinion (driver) drives a larger gear. Stage 2: Another pinion (mounted on the same shaft as the first driven gear) drives a second larger gear (final output). This allows for a higher overall reduction ratio than a single stage. 2. Overall Gear Ratio Gear Ratio (GR) = (Gear1/Pinion1) × (Gear2/Pinion2) Gear Ratio (GR)=(Gear1/Pinion1)×(Gear2/Pinion2) For example, Pinion1 = 20 teeth → Gear1 = 60 teeth → Ratio = 3:1 Pinion2 = 20 teeth → Gear2 = 80 teeth → Ratio = 4:1 Total Ratio = 3 × 4 = 12 : 1 3×4=12:1 3. SolidWorks 2022 Steps Start Assembly → Create new assembly file. Create Shafts (3 shafts needed): Input shaft → connects motor or driving source. Intermediate shaft → carries Gear1 + Pinion2. Output shaft → carries final Gear2. Insert Gears: Go to Design Library → Toolbox → Power Transmission → Gears → Spur Gears. Define number of teeth, module, and pressure angle (commonly 20°). Assemble Stage 1: Mate Pinion1 (input) with Gear1 (on intermediate shaft). Use gear mate in SolidWorks: Mechanical Mates → Gear → Set teeth ratio. Assemble Stage 2: Mount Pinion2 (on intermediate shaft) with Gear2 (on output shaft). Apply gear mate again with the correct ratio. Add Bearings & Housing: Use cylindrical/ball bearings (from Toolbox). Create a gearbox casing (extruded box with holes for shafts). Check Motion: Apply motor to input shaft → Run motion study → Observe reduced output speed and increased torque. 4. Tips Keep module size constant across gears for proper meshing. Ensure center distance = (Module × (Teeth of Pinion + Teeth of Gear)) ÷ 2. Add keys/keyways or fix the gears rigidly to the shafts. Use section view to visualize inside the gearbox.
- 格式
- Rendering、STEP / IGES
- 分类
- Educational、Industrial design、Machine design
- 标签
- gear box、gears、2 stage reduction、reduction
- 数据更新
- 2026-11-07T19:41:53Z
