一位15岁的年轻工程爱好者在Hacker News上分享了自己设计并制造的环面减速机（cycloidal gearbox）[1]。这台齿轮箱采用1:9的减速比，选用NEMA 17电机规格[1]。该设计方案基于Python脚本生成[1]。
这位少年的第一版设计是一台微型环面减速机，但因3D打印精度不足而未能成功运行[1]。经过迭代优化，第三版设计最终成功制成功能性的工作原型[1]。在设计优化方面，他还提出了进一步的改进方案，包括用MR128轴承替代housing pins，以及采用M2螺钉替代output pins来提高刚度与效率[1]。该项目涵盖了Pin数量、偏心距、外销轴半径等关键参数的精细计算[1]。
A 15-year-old has unveiled a cycloidal gearbox he designed and built from scratch, demonstrating an ambitious engineering project that evolved through multiple iterations before achieving success.[1] The gearbox features a 1:9 reduction ratio and is sized around a NEMA 17 motor specification.[1]
The project went through three distinct design versions before reaching a functional prototype.[1] The first iteration was a miniature cycloidal gearbox that failed to operate properly due to insufficient precision from 3D printing.[1] By the third version, the designer achieved a working gearbox, marking the first successful prototype in the development cycle.[1]
The design was informed by a Python script that generated the gearbox parameters, including pin count (N), eccentricity (E), and output shaft radius (r).[1] The creator also outlined potential refinements to enhance performance, such as replacing housing pins with MR128 bearings and substituting M2 screws for output pins to increase both rigidity and efficiency.[1]