Dynamic Analysis Of Structural System Of Ultrasonic Automatic Cleaning Device

Before assembling precision parts of high-speed spatial mechanisms,it is necessary to use ultrasonic cleaning machines to ultra clean the surface of the parts to achieve high-speed spatial operation performance and reliable design life.In order to ensure the quality of batch production and save labor and time costs,the development of ultrasonic automatic cleaning devices to achieve intelligent cleaning of precision parts of space mechanisms is a development approach to achieve intelligent manufacturing of space devices.The ultrasonic automatic cleaning device is installed with mechanical arms,linear modules,and other components,which are driven by electric motors through combined operation to simulate manual operation.Due to deviations in the manufacturing and installation process,vibration can occur during operation,which can cause vibration of the entire structure of the device.On the one hand,the operation of the mechanical arm to grip parts requires precise positioning,and the displacement caused by vibration can lead to inaccurate positioning;On the other hand,the cleaning agent containers used in the part cleaning process are all glassware,and vibration may cause bumps and cracks,causing the cleaning agent to overflow,thereby causing hazards.Therefore,it is necessary to conduct vibration analysis on the overall structure of the device,conduct structural dynamic design,ensure vibration reduction during operation,and achieve stable operation.This paper takes the ultrasonic automatic cleaning machine as the research object,comprehensively using theoretical derivation and finite element analysis,analyzes the lateral vibration of the mechanical arm and linear module support on the device structure,derives the dynamic equation of the composite structure system including the main bearing beam and support rod,and obtains the lateral displacement response of any point on the support beam.Through theoretical derivation of the model,the impact of motor rotation speed and linear module operation speed on the lateral displacement of the support beam is analyzed.Establish a three-dimensional model of the overall structure of the device using SOLIDWORKS,and a rigid flexible coupling dynamic model of the overall structure of the device based on ADAMS.Compare the finite element model of the robotic arm and linear module support with the analysis results of the theoretical derivation model,proving the correctness of the theoretical derivation.Further analyze the two main vibration forms during the operation of the device through a finite element model.Using segmented load simulation to simulate impact excitation,analyze the transient vibration caused by the start and stop of the linear module during the operation of the device;Simulate the eccentric force caused by the eccentric mass of the screw rod using rotational mass excitation,and analyze the forced vibration during the operation of the device.Aiming at the vibration of complex mechanical structure systems,this paper establishes a rigid-flexible coupling dynamic model based on the modal synthesis method,studies ways to reduce device vibration from adjusting the working frequency of linear modules,acceleration and deceleration time,and achieves the combination of theoretical analysis and finite element analysis,providing a better method for solving similar problems in practical engineering.