Research On The System Of High Precision Profile Detection For Thin Plate Parts

In order to ensure that the deformation of the surface shape of the thin plate parts is as small as possible due to the influence of gravity during the detection process,various support methods and various support devices are widely used in thin plate parts(such as wing walls,automobile shells,large sizes)Lens detection,etc.)High-precision surface shape detection.The traditional thin plate parts detection and support technology is that the support structure passively overcomes the role of gravity to complete the support function.Traditional passive rigid support structures such as fixed piles have strong stability but poor adaptability;traditional passive flexible supports such as water float support and air float support have certain adaptability but poor stability.The traditional detection support technology can not meet the requirements of the stability and adaptability of the high-precision surface shape detection of thin plate parts.Therefore,this thesis designs a multi-point active flexible automatic control support system,which can adaptively adjust the position of the support point according to the surface shape of the thin plate part to be tested to complete the support of the part further improving the stability and adaptability of the support system,Provide a kind of detection support means with strong adaptability,good stability,easy maintenance,safe and reliable for the detection support of various thin plate parts.This thesis mainly studies the support system through the following points:(1)By researching the multi-point active flexible automatic control support method,the appropriate support point arrangement method is determined according to the surface shape of the thin plate parts,the calculation model of the number and position of the support points is estaished,and the deformation of the thin plate surface shape is simulated using ANSYS Through the analysis of the simulation results,the verification of the number of support points and the position calculation model is completed.(2)According to the support precision requirements of thin plate parts,a single-point flexible automatic control support device of a multi-point active flexible automatic control support system is designed which includes the design of the support structure,and the ball screw,servo motor,Calculation and selection of important parameters such as load cells,and the manufacture and assembly of the device.(3)Designed the automatic control system of the single-point support device in the multi-point active flexible automatic control support system,including the design of the peripheral hardware control circuit and the design of the supporting software control program,which can realize the single-point flexible automatic control support device Parameter setting,motion control,data feedback and other functions.(4)Experimental research and analysis of the multi-point active flexible automatic control support in this thesis,the support force of each support point is collected through experiments,and it is compared with the threshold range of the rated support force required by the simulation.The position calculation model is verified,and the single-point support device automatic control experiment of the multi-point detection support system is completed by changing the position of the single support point.