Computer Aided Design of Automotive Clutch Diaphragm Spring
Zhang Junxia 1 Yue Dongpeng 2 1 School of Mechanical Engineering, Taiyuan University of Technology, No. 79, Yingze West Street, Taiyuan City 0300242 Tianjin University School of Mechanical Engineering No. 92, Weijin Road, Nankai District, Tianjin 300072 Automobile clutch is arranged between the engine and the transmission to cut or join The transmission of power. Automobile clutches include friction clutch fluid coupling electromagnetic clutch and so on. According to the characteristics of the compression spring, the friction clutch can be divided into a circumferential spring clutch, a central spring clutch diaphragm spring clutch and the like. Among them, the diaphragm spring clutch has more and more applications due to its ideal nonlinear deformation characteristics. It is not only used in cars, but also widely used in medium tonnage trucks. The use of diaphragm spring clutches is also increasing, so the computer-aided design of the diaphragm spring clutch has practical significance.
The design of the diaphragm spring has many factors to be considered, the calculation formula is complicated, and the trial and error method is used in the past. This design method is slow and complicated, and it is difficult to obtain the optimal result. In this paper, the biggest problem that occurs during the use of the diaphragm spring clutch is that the stress value of the diaphragm spring is high and the service life is not up to the requirement. In order to select the parameters reasonably from the design angle, the stress value is minimized and the diaphragm is used. Lifespan, so here is to seek the minimum stress as the objective function of the optimized design. The inner radius of the spring is the thickness of the spring leaf piece. The large end deformation and the inner and outer radii R and r of the butterfly spring are the main factors affecting the performance of the diaphragm spring clutch. Therefore, the design variable is determined to be X=xx2, = 阳ä¹,人, Then, according to the structural working principle of the diaphragm spring, the constraints are determined by the allowable stress of the material, and the optimization mathematical model is established. The optimal solution can be obtained by the fixed optimization method. On this basis, the inner cone height H and the medium have a significant influence on the working performance of the diaphragm spring clutch, and the inner radius r is used as the basic parameter. The stress of the diaphragm spring spring is programmed by the Aut0LISP programming tool embedded in AutoCAD. Significantly reduced.
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