OBRABOTKAMETALLOV Vol. 24 No. 2 2022 TECHNOLOGY Fig. 14. Experimental sample of the measuring device with the control unit Fig. 15. Measurement on a laboratory sample: 1 – base plate; 2 – support roller; 3 – measuring device; 4 – rotation body model; 5 – computer calculation, construction and selection of the optimal machining route, as well as technological processing modes for each technological transition; data recording and storing; 3. Surface machining: multi-pass machining according to the calculated machining route; intermediate measurements control with determining the parameters of the surface shape accuracy or its part, if necessary; adjustment of the machining route based on control measurement data; 4. Final control measurement of surface shape accuracy parameters. Correction of the machining route, or completion of machining. Conclusion The presented method and virtual simulation of measurements for reduction processing make it possible to signifi cantly reduce the processing time compared to the technology with active shape control and the traditional method, in which the allowance is removed with correction after each pass. The difference is that the machining route is calculated in advance and the measurement with correction is made only as needed. It is determined that by providing a single technological base for each individual technological transition within the framework of the mobile technology of mechanical processing of the riding rings rolling surface of technological drums, the accuracy and speed of processing increase. In addition, inheritance of accuracy parameters for the entire surface is provided, which makes it possible to obtain a single profi le of the longitudinal section of the entire surface. Thus, in the case of basing on a surface area with a minimum shape error, the number of technological working strokes necessary to achieve the required accuracy of the surface shape is reduced. The processing of the entire remaining part of the surface, except for the area of basing, at each technological transition is signifi cantly less effi cient than the processing of only the surface area for rebasing until standard accuracy parameters are obtained at the processed area. Then basing is performed along the obtained surface area with the processing of the remaining surface. In this case (for the virtual model) the processing of 800 mm between areas took 15 working strokes, and in case of processing the entire surface at each transition it would take 52 working strokes. Virtual modeling, control method and allowance determination method make it possible to obtain technical results and solve the problems of increasing the performance and ensuring the control accuracy of complex surfaces on coordinate measurement machines.
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