數(shù)控液壓折彎機的結構分析和優(yōu)化設計

1、南京航空航天大學碩士學位論文數(shù)控液壓折彎機的結構分析和優(yōu)化設計姓名：翟桂強申請學位級別：碩士專業(yè)：機械電子工程指導教師：吳洪濤20080301數(shù)控液壓折彎機的結構分析和優(yōu)化設計 II ABSTRACT The development trend of CNC bender, the present situation and the general design method of the forging machine are int

2、roduced in this paper, Taking a company's CNC bender as the object of this study, the static and dynamic characteristics of CNC bender are analyzed in ANSYS, which is a kind of general finite element analysis softwar

3、e. Frame structure has been optimized based on the analysis results. First, the static characteristic of the main part of CNC bender is analyzed. The finite element model of these part are established, the stress and the

4、 strain of every part is computed by ANSYS. Plan of redesigning of the structure is proposed based on the analysis. Second, the influences of the thickness of the side board and the Radius of curvature to the mechanical

5、performance are analyzed by ANSYS. Appropriate parameters are selected to optimize the frame structure and the position of the compensatory cylinder. Third, modal analysis of frame is done to extract the first ten natura

6、l frequencies and modalities of the frame structure in Lanczos method. Finally, the nonlinear contact analysis method is used on the work table and slider, which can simulate strained condition in the working process of

7、a bender dynamically. The analytical results provide reference basis for preceding analysis. Quality of the frame is reduced 9% in insurance of performance of the punch and low frequencies are increased based on the anal