|Title||Contact of working surfaces for spherical washers and recommendations for determining the gap in the joint|
Dehtiarov, Ivan Mykhailovych
Neshta, Anna Oleksandrivna
|Date of Issue||2020|
|Publisher||Sumy State University|
|License||Creative Commons Attribution - NonCommercial 4.0 International|
|Citation||Dehtiarov I. M., Neshta A. O., Samardak M. P., Antosz K., Avramenko S. E. (2020). Contact of working surfaces for spherical washers and recommendations for determining the gap in the joint. Journal of Engineering Sciences, Vol. 7(2), pp. B1–B7, doi: 10.21272/jes.2020.7(2).b1|
In article analyzes the technical requirements for spherical washers used in threaded connections of
pumps, which made it possible to highlight contradictions in paragraphs of the current standards for pump fasteners.
They regarding recommendations for manufacturing technology and control of the working surfaces of washers.
Publication analysis in the spherical surfaces lapping showed the absence of research in the spherical surfaces contact
after lapping and the dependence of contact parameters by the technological parameters for this operation. The
presence of a gap in conjunction with spherical washers after the lapping process was proved geometrically. Its
location was determined, and a mathematical dependence was obtained to determine the maximum gap value in
conjunction. It was found that the gap depends on the design parameters of the washers' conjunction and the abrasive
material grain size used for lapping. Recommendations for selecting the abrasive material grain size for the lapping
operation for the most common values of the roughness parameters for the working surfaces of spherical washers
have been formed. In the article was proposed to introduce into the technical requirements for the spherical washers
drawings changes concerning the gap size allowable in the conjunction, and as well as tolerances value changes of the
radii of the working surfaces of the washers, thus increasing their manufacturability without conflicting with the
requirements of the current standards.
|Appears in Collections:||
Journal of Engineering Sciences / Журнал інженерних наук
|Dehtiarov_jes_2_2020.pdf||963,3 kB||Adobe PDF||10725|
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