新型滾珠螺桿傳動系統之研製

A Study on a Novel Ball Screw Transmission System

謝文和(Wen-Ho Hsieh)

指導教授 ： 林博正

國立虎尾科技大學/工程學院/機械與機電工程研究所在職專班/碩士(2008年)

摘要

本研究之目的在於提出新型滾珠螺桿傳動系統之概念，及系統化分析與設計方法。本研究所提出的系統包含馬達、定速聯軸器、減速機、變轉速聯軸器、滑件曲柄機構、與滾珠螺桿機構所組合而成，主要優點為可依據不同運動需求，產生複雜輸出運動。馬達以定速聯軸器與減速機連接，而減速機則以變轉速聯軸器與滑件曲柄機構相連接，最後連接滾珠螺桿機構，進而產生複雜旋轉輸出運動。因為變轉速聯軸器可被快速更換，所以此系統的輸出可容易調整，可產生不同之角速度及加角速度運動。且螺桿的角位移輸出，可改變曲柄長度加以調整。首先，探討新型滾珠螺桿傳動系統的構造及運動特性。然後，推導出其運動狀態之方程式，及提出最佳化尺寸合成之方法。此外，並以實例進行尺寸合成、運動分析、及運動模擬。最後，進行雛型機製作與實驗，以驗證所提系統之可行性。由實驗結果顯示，所提系統可產生所需複雜輸出之運動。除此之外，具有成本低、高精度、高可靠度、及運動可調整等優點。

關鍵字

滾珠螺桿 ； 傳動系統 ； 歐丹聯結器 ； 變轉速機構

並列摘要

The purpose of this study is to propose a novel ballscrew transmission system, and present its systematic analysis and design approach. The main advantage of the proposed system is that it can produce complex motion according to different motion acquirements. The proposed system consists of a motor, a constant speed coupling, a reduction gear, a variable coupling, a slider-crank mechanism, and a ballscrew. The motor is connected to the reducer through the constant speed coupling, and then the reducer is connected to the slider-crank mechanism by a variable speed coupling, the slider finally drive the ballscrew to produce complex rotational output motion. Since the variable speed coupling can be replaced quickly, the output motion of the proposed system can be adjusted easily to generate different angular velocity and angular acceleration. The angular displacement of the ballscrew can be changed by adjusting the length of the crank. First, the structural and kinematic characteristics of the proposed system are investigated. Then, the equations for state of motion are derived, and the approach for optimization dimension synthesis is presented. Furthermore, an example is given to illustrate the proposed approach for kinematic analysis, dimensional synthesis, and simulation. Finally, a prototype machine and experimental setup are built to verify the feasibility of the proposed system. The experiment result has indicated that the proposed system can generate very complex output motion. In addition, it has the advantages of low cost, high precision, high reliability, and motion adjustable.

並列關鍵字

ballscrew ； transmission system ； Oldham coupling ； variable speed mechanism

參考文獻

1. Freudenstein, F., Tsai, L. W., and Maki, E. R., "Generalized Oldham Coupling," Journal of Mechanisms, Transmissions, and Automation in Design, Vol. 106, No. 4, pp. 475-481, 1984.

2. Tsai, L. W., "Oldham-Coupling Second-Harmonic Balancer," Journal of Mechanisms, Transmissions, and Automation in Design, Vol. 106, No. 3, pp. 285-290, 1984.

3. 謝文祥，運動可調標準凸輪系統，中華民國發明專利，專利號碼：發明第I264629號。

4. Hsieh, W. H., "A Kinematic Study on a Novel Press System," Key Engineering Materials, Vol. 364-366, pp. 595-600, 2008.

5. Hsieh, W. H. and Shu, K. M., "A Study on a Novel Press of Watt Type," accepted by Steel Research International. Hsieh, W. H. and Tsai, C. H., "A Study on a Novel Quick Return Mechanism, "submitted to Transactions of the Canadian Society for Mechanical Engineering.