行星-傘齒輪二段減速機設計

Abstract

(1) 目的：我們所做的機構為(行星─傘齒輪減速機)，減速機的目的為降低轉速， 並增大轉矩，降低慣量。行星齒輪機構包括太陽輪、數個行星齒輪和環齒輪， 並確定固定件及驅動件，使其能夠產生不同減速比。行星齒輪減速機是由馬 達端驅動，並通過傳動軸輸出動力至太陽輪，而太陽輪驅動行星輪，行星輪 驅動環齒輪，降低轉速，增大轉矩，達到傳動目的。我們的數據為(2 匹馬力、 每分鐘 1750 轉、主要減速比為 2.5：1、次要減速比為 5：1)，我們要用這些 條件來設計一顆能安全驅動的減速機。 (2) 過程及方法：我們利用行星齒輪計算、傘形齒輪計算軸、負載分析(F.B.D)、 破壞理論計算、變動負荷的破壞準則(疲勞破壞)、選配軸承、選配鍵、參考 Catalog 以及使用 Excel 計算此減速機是否安全。 (3) 結果：減速機在工業界是不可或缺的機構，他可以減低馬達或引擎的轉速， 以增加精度、扭力和實用性，如今汽、機車等多數動力傳輸系統都會用到。 有鑑於此，這項專題能讓我們對減速機有更多的了解，用大學這兩年所學的 知識來設計、配置一顆屬於我們自己分析的減速裝置。

(1) Purpose: The mechanism we design is (planetary - bevel gear reducer). The purposes of the reducer are to reduce the speed, increase the torque, and reduce inertia. The planetary gear mechanism includes a sun gear, a plurality of planetary gears, and a ring gear. In addition, we determine the fixing member and the driving member to make it be capable of producing different reduction ratios. Planetary gear reducer is driven by the motor side, and the drive shaft outputs the power to the sun wheel. The sun wheel drives the planetary wheel; the planetary wheel drives the ring gear, reduce the speed, and increase the torque to drive the purpose. Our data is (2 horsepower, 1750 revolutions per minute, the main reduction ratio of 2.5: 1, the secondary reduction ratio of 5: 1), we are going to use these conditions to design a safety-driven reducer. (2) Process and method: With the planetary gear calculation, umbrella gear calculation axis, load analysis (FBD), damage theory calculation, variable load failure criteria (fatigue damage), optional bearings, optional keys, reference catalog and Excel, we are able to calculate whether this reducer is safe or not. (3) Results: Reducer is an indispensable mechanism in the industry fields, it can reduce the motor or engine speed to increase accuracy, torque and practicality. Furthermore, it can perfectly work in vehicles and other power transmission systems. Therefore, this topic allows us to understand more about the reducer. With the knowledge of designing we gain during the two years in the university, we can configure a part of our own analysis of the slowdown device.