Simulation Research on Three-point Contact Outside Diameter Online Measuring Device

Abstract

In the grinding process of workpiece, because the grinding wheel will produce wear, it is difficult to control the machining accuracy of the workpiece by the grinder itself. Using radial measuring instrument to measure the size of the workpiece in real time, detect the change of the size of the workpiece, and guide the adjustment of grinding parameters can improve the production efficiency of the grinder and reduce the machining cost. It is an important link in the grinding process of the grinder. Different from the traditional two-point contact on-line measurement technology of outer diameter, this paper designs and develops a set of three-point contact on-line measurement device of outer diameter based on the principle of bow height and chord length. In the measuring process, two fixed probes and one displacement sensing probe are in contact with the outer diameter of the workpiece at the same time, and the on-line measurement of the outer diameter of the workpiece is realized by solving the positional relationship among the three probes. In order to explore the force-measuring extrusion deformation of the device in the measuring process, this paper simulates and analyzes the three-point contact on-line measuring device for outer diameter.