Measuring Scheme And Analysis Of Three-dimensional Profile Of Industrial Synchronous Belt

Synchronous belt plays an important role in industrial transmission.Its tooth profile parameters affect the meshing,transmission noise and service life of the belt gear.The measurement of the tooth shape of synchronous belt is a necessary condition to improve the quality of synchronous belt.At present,the common detection method has a series of problems,such as low efficiency of manual detection,machine detection accuracy is not up to standard,unable to restore the complete tooth shape appearance,and vulnerable to other human factors and objective environment influence,these problems limit the improvement of the quality of industrial synchronous belt.Industrial components at home and abroad based on the above background,this paper compared the detection principle and detection methods,analysis of morphology characteristics of industrial synchronous belt,in Changchun city technology bureau project "curvature segmentation algorithm based on car synchronous belt tooth size rapid detection system research",this paper proposes a synchronous belt based on laser triangulation three-dimensional profile measurement plan;The measurement mechanism of the line laser displacement sensor was analyzed,and the mathematical model was established based on the data of the tooth shape of the synchronous belt.Finally,the optimal measurement height and measurement Angle of the line laser displacement sensor were obtained to prevent data loss during measurement.A set of 3d gear profile measuring device for industrial synchronous belt two-wheel drive driven by ac servo motor,linear laser displacement sensor,tension system and computer control system was built.Line based on laser displacement sensor collected by synchronous belt tooth surface3 d data,put forward from the group of data processing,filtering noise reduction,compaction,characteristic points recognition,data classification based on feature points,the data processing of tooth shape parameters to calculate the steps,at each step in the comprehensive analysis of a variety of methods,in order to find the most suitable for three-dimensional method of tooth profile data synchronous belt.Finally,a processing and calculation method of 3D tooth profile data is formed,which can remove outlier data by direct filtering method,denoise data by bilateral filtering method,simplify data by uniform grid simplification algorithm,identify feature points based on curvature,classify data based on feature points,and calculate tooth profile parameters.The calculation accuracy and speed of 3d tooth profile are improved.Using the measuring device and tooth profile data processing calculation method proposed in this paper,a 5M arc-arc tooth synchronous belt with 300 teeth and 20 mm bandwidth was selected for the measurement test,and the measurement was completed in 130 s.The experimental results were compared with the measurement results of leica DVM2500 3D commercial electron microscope,and the maximum deviation of the radius of the arc surface at the left tooth bottom was only 0.0046 mm.Therefore,it is verified that the 3d tooth profile measuring device of two-wheel drive synchronous belt based on laser triangulation method is fast in measuring speed,and the results of data processing and calculation are accurate and reliable.It is of great significance to improve the product quality of industrial synchronous belt and the tooth profile accuracy of industrial synchronous belt.