RU2018146088A - ELASTIC BOX ELEMENT FOR MACHINES - Google Patents

Claims (9)

1. An elastic plate-shaped element for machine tools, comprising a frame, in which an elastic plate-type element is installed, the frame is made of lower and upper parts, the lower part of the frame consisting of a base made in the form of a disk with an annular internal groove in which the lower elastic the ring of the elastic element of the plate type, and the upper part of the frame is made in the form of a cover, which is a disk with a central annular recess, and rigidly connected by, for example, screws with the upper elastic ring of the elastic element of the plate type, while the elastic element of the disk type contains at least , two flat elastic coaxially arranged rings, the upper and lower, interconnected by at least three elastic flat plates arranged obliquely with respect to the axis of the rings, the upper ring being connected to the cap and a ring of friction material to create dry friction, providing which requires the necessary damping in the system, and flat elastic plates are located between the recesses, a layer of vibration damping material located in the central annular recess of the cover, on which the mounting plate for attaching the vibration-insulated object is fixed, is made in the form of three intermediate vibration-damping layers: the first layer is made of dispersed elastic-damping material in which crumbs can be used, for example, the following materials: rubber, cork, polystyrene foam, nylon, foamed polymer, as well as crumbs of solid vibration-damping materials, such as plastic compound like Agate, Anti-Vibrate, Shvim with fraction size crumbs 1.5 ÷ 2.5 mm, the second layer is made of knitted elastic synthetic fibers, and the size of cells knitted from elastic synthetic fibers is 10 ÷ 15% smaller than the fractions of crumbs of vibration damping materials; and the third layer - from a continuous damping material in which sponge rubber, needle-punched material of the type “Vibrosil” based on silica or alumino-borosilicate fiber, as well as non-woven vibration-damping material, and as a friction material of the ring attached to the lower part of the lower ring, can be used used friction material made of a composition comprising the following components, with their ratio, wt. %: a mixture of resole and novolac phenol formaldehyde pitches in the ratio 1: (0.2-1.0) 28 ÷ 34% fibrous mineral filler containing glass roving or a mixture of glass roving and basalt fiber in a ratio of 1: (0.1-1.0) 12 ÷ 19% graphite 7 ÷ 18% carbon black friction modifier in the form of a mixture with kaolin and silicon dioxide 7 ÷ 15% barite concentrate 20 ÷ 35% talc 1.5 ÷ 3.0% characterized in that between the cover and the base of the elastic plate element, through the elastic element of elastomer, a mesh damper is installed, the casing of which is made in the form of a vertical cylinder with fasteners located perpendicular to the axis of the cylinder in its middle part, and one of the fasteners is a bolt with a washer, and another, opposite located and connected to a bolt - a threaded sleeve with a washer, which is a supporting element when the vibration-insulated object is inclined, while in the upper part of the cylinder there is an elastic element made of elastomer, such as rubber or polyurethane, and in the lower part there is a combined elastic element. 2. An elastic disk element for machines according to claim 1, characterized in that as a friction material of the ring attached to the lower part of the lower ring, sintered friction material based on copper is used, containing zinc, iron, lead, graphite, vermiculite, copper, chromium, antimony and silicon, in the following ratio of components, wt. %: zinc 6.0 ÷ 8.0 iron 0.1 ÷ 0.2 lead 2.0 ÷ 4.0 graphite 3.0 ÷ 7.0 vermiculite 8.0 ÷ 12.0 chromium 4.0 ÷ 6.0 antimony 0.05 ÷ 0.1 silicon 2.0 ÷ 3.0 copper rest