Издательство: "федеральное государственное бюджетное образовательное учреждение высшего образования «Национальный исследовательский Мордовский государственный университет им. Н. П. Огарёва»"
Abstract.
1) Introduction.
In the article the author defines the main provisions of the peculiarities of the kinematics of plant lapping in the process of finishing the shut-off elements of the valves, as well as methods for determination of the operating parameters and val-ues of roughness are in the process of abrasive finishing of sealing surfaces of valves.
2) Materials and methods.
Developed kinematic scheme of grinding machines renocnego machine to determine the angular velocity of rotation of an instrumental disc and lapping. Based on the developed kinematic scheme received us analytical expressions to de-termine the capacity of the drive motor of the machine and cutting, as well as the angular and linear speeds of rotation of tool drive and laps. Also developed trajec-tory traces of the grid points of the lapping when it is moved to the treated the sur-face details of pipe fittings.
3) the results of the study.
Examples of the calculation of kinematic parameters and rough-STI pocessed sealing surfaces of gate valves with the diameter of the us criminal pas-sage DN100 according to established analytical dependencies for rough and finish lapping.
The calculated coordinates of the moving tools with visualizati of trajectory points using a special software product Lazarus. The calculated coordinates and built graphically the trace of point tool when you move it in the process. Deter-mined by calculation of specific mesopotalje space which characterizes the capac-ity of the sealing surfaces.
4). Discussion and conclusion.
The calculations made it possible to determine how to place the lap relative to the machined sealing surface in terms of optimization of the treatment process. Preliminary calculations showed that the area of lapping contact with the work-piece and the optimum angle of contact will change slightly within the relative probability of error of 5% and 10%.
Актуальность проблемы социально-экономической депривации обусловлена тем, что отсутствие внимания к решению данного вопроса может при- вести к проявлению недовольства как отдельного индивидуума, так и социальных
групп, что будет способствовать угрозе устойчивости российского социума.
В связи с этим в целях сохранения стабильности общества необходимо иссле- дование малообеспеченного населения и социально-экономических факторов его
депривации. Целью исследования является определение социально-экономических
индикаторов депривации малообеспеченного населения в Пензенском регионе.
