Open AccessMulti-criteria synthesis of standing connections of the support of the running screw CNC machine
Author(s) -
А. Ф. Денисенко
Publication year - 2019
Publication title -
journal of physics. conference series
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.21
H-Index - 85
eISSN - 1742-6596
pISSN - 1742-6588
DOI - 10.1088/1742-6596/1260/6/062004
Subject(s) - parametric statistics , task (project management) , parallelepiped , pareto principle , mathematical optimization , computer science , sequence (biology) , pareto chart , mathematics , engineering drawing , engineering , statistics , geometry , systems engineering , biology , genetics
The creation of modern CNC machines requires the development of the design of machine feed drives with specified performance criteria. Ensuring the characteristics of feed drives that meet these criteria is largely related to the reasonable choice of design and technological parameters of standing connections available in the design. It is shown that this task, due to the presence of several conflicting criteria and a significant number of variable design parameters (VDP), is the task of parametric multi-criteria synthesis of compounds. The stages of the procedure of parametric multi-criteria synthesis of stationary machine tools are considered. The design variables and the formation of permissible regions of their variation, determined by the presence of parametric, functional, and criterion constraints, are analyzed in detail. It is indicated that the determination of the solution search area (the Pareto region) is most conveniently performed by scanning using the LP τ -sequence. It is proposed, in connection with the complexity of describing the boundaries of the Pareto region, to use its approximation by the described hyper-parallelepiped. Since the area of the search for solutions is characterized by the fact that any solution belonging to it cannot be improved simultaneously by all criteria, it is proposed to use a generalized criterion, calculated during scanning, when selecting possible deviations of the VDP from nominal values. Calculations performed according to the proposed procedure for the left support of the running screw of the longitudinal feed drive of the CNC machine mod. 1P426DF3, allowed to determine the nominal values and deviations of each of the VDP standing connections.