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
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