Honing Pneumatic Measuring System Grinding Head Measuring Element Optimization Design

This topic comes from “high-end CNC machine tools and basic manufacturingequipment” major projects of science and technology, mainly high-end CNC honingmachine, the wheel head component of pneumatic measuring measurement systemoptimization design, through the static experiment and simulation of pneumaticmeasurement system, through pneumatic measurement parameter optimization designof the main measuring nozzle, make pneumatic measuring device adapted to themeasurement range and sensitivity, which have greater practicality, and ultimatelyused in high-end CNC honing machine.The traditional pneumatic measuring the parameters of design, using the methodof experience in estimation and experimental comparison. Theoretical research onthe aerodynamics and hydrodynamics, and pneumatic measurement system erroranalysis and study of the transfer function, to establish a theoretical model of thedesign of pneumatic measuring parameters. And by computer simulation to furtheroptimize the design parameters of the pneumatic measuring instrument, in theory,the design of pneumatic measurement system gives guidance, and then verified byexperiment, make pneumatic measurement can be better used in machinery and otherindustries.In the research stage, mainly the method of combining theoretical studies andsimulation experiments, through research of honing pneumatic measurement and gasdynamics, analysis of the characteristics of the differential pressure pneumaticmeasurement system to establish mathematical model honing pneumatic measurementsystem, research differential pressure pneumatic measuring in the different workingconditions, the gas flow state (critical state, sub critical state) variation, and thecorresponding pressure-the gap function relationship, for study honing pneumaticmeasurement and the measurement accuracy of the experimental conditions providestrong theoretical basis; the relationship between air resistance, the gas content andgas sense and measurement accuracy of the measuring system, design for cavity ofrotary seals, pneumatic pipe length, diameter; study the clearance of between thecircle and to be machined hole wall and nozzle subsidence guard the stability ofpneumatic measurement to determine the grinding head design for a certain size hole,the outer diameter of the shield, nozzle She parameters such as design principles.In addition, use the FLUENT of flow simulation software validation theoretical results and to optimize the differential pressure pneumatic measuring system thestructure of the main measurement nozzle, the size parameters, and analysis of the gasflow field in the form of the relationship between the measurement range and themeasurement accuracy, measuring element design principles is proposed; research therelationship between the measurement of pressure and measurement accuracy, try toestablish a family of curves under different pressures, and analyze the impact ofpressure on the location of the curve was linear segment, the basic principles of thebest pressure of measurement system what honing allowance and the size of the workpiece is proposed to determine.