單牙蝸桿減速機設計

Abstract

摘要 論文主要想解決人口老化時，升降椅的需求增加，同時也發展出一大市場，藉此研究此議題，作為往後設計上的參考資料，升降椅主要為馬達帶動單牙蝸桿減速機。 首先對產品規格有初步了解，一方面才能設計出最符合需求的產品，另一方面才能以最低的成本達到目標。設計一項產品很難一次就到位，常需要經過多次的修改，才能找到最佳的設計參數。這次我們使用蝸桿蝸輪減速機構，配合正齒輪作為我們的傳動機構。Fortran程式一方面幫助我們減少計算錯誤，一方面加快我們重新設計並計算的速度。多次計算後希望以最小的機構尺寸，達到所要求的成載能力，並限制減速機及其傳動機構寬度小於200mm。蝸桿蝸輪額定切線力，觀察蝸輪切線力與額定切線力。 這次的研究主要應用機械設計課程中所學習到的專業知識，加上程式設計完成此次研究，得知設計上所需材料有許多時候比想像中要少。

Abstract The study mainly focuses the large emerging market of the chair lift when the mass population ages. The design of our chair lift was based on the issue of the mass aging population, and our layout is a motor spurring the single-tooth worm reducer. After we had a preliminary understanding of the product’s specifications, we can not only design the product that best meet the needs but can also achieve our goal with the lowest expense under limited budget. Designing a product is hard to success without numerous of failures, we have been through countless dead ends to find the best parameters. Eventually, we came out with the design of a worm gear speed reducer mechanism with a spur gear as our transmission mechanism. With the aid of Fortran, we were able to minimize our mistakes of calculation and save huge amount of time of redesigning at the same time. After multiple calculations, we were able to achieve the required load capacity, while reducing the body size of the reducer and its transmission mechanism in less than a width of 200 mm. The worm circumferential force and rated circumferential force we also observed by us. The background knowledge implemented in this study were based on the expertise we learned in Mechanical Design, and with the help of extra programming. At the end of the lesson we learned that the materials needed during our project is a lot fewer than we had imagined.