The influence of warranty and deformation of the saw blade on the wear of grids in gin machines

¹ Tashkent State Agrarian University, 100140 Tashkent, Uzbekistan
² Tashkent Institute of Textile and Light Industry, Shokhjahon Street, 5, 100100 Tashkent, Uzzbekistan

^* Corresponding author: asqar_safarov@mail.ru

Abstract

The article discusses the problem of grate wear in saw blades, caused by uneven contact with the saw blade due to its warping and deformation under load. The results of a theoretical analysis of the forces acting on cotton fiber with a non-central position of the saw blade relative to the inter-grid gap are presented. The dependence of the fiber tension on the grip angle of the grate, which is directly related to the wear of the grate and the displacement of the saw blade, is substantiated. The war page of the saw blade, reaching 0.95 mm, and its deformation under the influence of a load from 0.81 to 0.92 mm with a force of 10 N were experimentally determined. It was established that, due to the uneven rigidity of the deformed disk, variable lateral forces act on the grate in the range 10.8-12.3 N per 1 mm of deformation. The identified factors of warping and deformation of the saw blade are the causes of uneven wear of the grates, which negatively affects the quality of ginning raw cotton. The results of the study are important for improving the design of saw gins.