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ÖÐͼ·ÖÀàºÅ£ºTH111 ÎÄÏ×±êÖ¾Â룺A doi£º10.3969/j.issn.1006-0316.2022.08.002

ÎÄÕ±àºÅ£º1006-0316 (2022) 08-0006-07

On the Solution of the Transmission Angle of the Plane Mechanism from the Perspective of Mechanics

GAO Ge

( School of Mechanical Engineering, Jiangsu University of Science and Technology, Zhenjiang 212100, China )

Abstract£ºThe transmission angle γ is often used to judge the force transmission performance of planar mechanism. However, the definition of transmission angle is not given directly in the existing teaching materials. It depends on the solution of pressure angle, which produces ambiguity and makes it difficult for students to understand and use. This article aims at analyzing the actual physical meaning of the transmission angle from the perspective of mechanics. By introducing the concept of valid/invalid driving force, it gives the accurate definition of the transmission angle through supplementary explanations without changing the original definition in the teaching materials. Transmission angles of commonly used mechanisms are found through the new approach, which is simple and clear to ensure the uniqueness. What is more, how to find the solution of the minimum transmission angle via the new way is further discussed. Several examples verify that the definition is simple, clear and unique, which is easily accepted and used by students. It can help improve the corresponding basic concept in the mechanical design textbook.

Key words£ºtransmission angle£»pressure angle£»mechanics———————————————

ÊÕ¸åÈÕÆÚ£º2021-08-10

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