PROCESS FOR THE MANUFACTURE OF THIN-WALLED ELASTOPOROUS PARTS IN THE FORM OF BUSHINGS IN METAL-RUBBER MATERIAL

摘要

The invention relates to mechanical engineering, in particular to the manufacture of elastoporous parts in wired materials such as metal-rubber (MR). A flat blank is formed from extended wire spiral segments with an average density ρ=(2.0-2.8)ρ(d/d), ρ - density of the wire material, d - diameter of the wire, d- spiral outer diameter, then the blank is pressed in a direction perpendicular to a blank plane to an average density ρΠ=(1.5-2.0)ρ(d/d), then the pressed flat blank is wound at least in 3 layers on an elastomer cylinder with such a tension that ensures an outer diameter of a roll obtained equal to the diameter D. An elastomer cylinder height is made greater than a width of the compressed flat blank, and an elastomer cylinder diameter is made less than the diameter D. The roll is subjected to a radial-axial pressing in a mold by flat continuous punches and a bushing blank is manufactured with the average density 1.3-2.2 times greater than the density ρΠ, with the inner diameter Dand with a wall thickness less than 0.14 D. The final pass of the bushing blank axial pressing is carried out by annular punches to the value of average density ρgreater than ρΠ, but less than 0.8ρ.