Method of experimental research of flat grinding with ACL wheels and workpiece oscillation

A method of flat grinding with axially shifted cutting layer (ACL) and workpiece oscillation allow increase of the process efficiency compared with the pendulum grinding and obtain the undirected detail microrelief. The paper contents a method of experimental research of machining process. The purpose of experimental research is to verify the basic provisions and the results of theoretical research and the obtained data using the developed simulation-modeling program. Investigated influence for the received workpiece surface roughness and processing performance of the grinding depth, of number of passes, of oscillation speed and inclination of the ACL grinding wheel. Processing performed on the flat-grinding machine using a pair of grinding wheels of same mark, one of which has a straight profile, the second has an axial shift. Workpieces are pre-processed with specified roughness and hardness of surface. In the process of research, lubricate-cooling technical environment not used due to lack of need by results of theoretical research, as well as to eliminate failures or accuracy reduction of the oscillations sensor. For the workpiece oscillations used the original design of the set with an inertial vibration source. Set driven by the commutator motor with the infinitely variable speed control. For monitoring of the engine speed and the oscillation amplitude is applied bipolar Hall effect sensor, in a pair with the magnet and mounted on the one movable and one fixed installation plates. Vertical oscillations amplitude of magnetic plate monitored with a dial indicator. The roughness of the items measured on profilometer. Experimental data processed on a PC using a multivariate regression analysis with the least squares method. Presented method allows to reliably obtain experimental data of the flat grinding with using of ACL wheels and the workpiece oscillations and to compare them with the results of theoretical research and to establish adequacy of the developed mathematical models and simulation-modeling program.