Sliding surface consisting mainly of wood or fibrous material (F16C33/18)

ethod of processing of gas bearing porous insert // 2554897
FIELD: machine building.SUBSTANCE: method of processing of the gas bearing porous insert consists in that for the material of the insert a pre-processed to the necessary geometrical shape a sapwood part of the wood is used which has been boiled down in a concentrated solution of cooking salt, the ends of which after boiling out are coated with a sticky solution, and then the preform is placed into a drying chamber. The drying is performed in a step temperature mode. The offered method completely removes from sapwood the resinous substances due to boiling out of the preform in the concentrated salt solution. The solution removes the resinous substances, keeping a unidirectional arrangement of capillaries. Meanwhile there is no fracturing of the preform ends and middle part due to the use of adhesive solution. The used method of drying ensures a homogeneity and constant structure, as far as from the preform it is easier to evaporate water, than resins, thus a constant permeability of the gas bearing porous insert is ensured and the time required for its fabrication is minimised.EFFECT: decrease of time required for fabrication of the porous insert.

Plain bearing and method of its manufacture // 2539022
FIELD: wood working industry.SUBSTANCE: plain bearing is made from compressed impregnated wood with a radial arrangement of fibres and uniform density along the whole section and contains greasing in amount 7-8% from the wood mass, and metal inclusion. The wood of the bearing contains nano-crystalline cellulose in the amount 0.5-0.8% from the wood mass, and the metal inclusion is implemented as a continuous nickel film in amount 4-6% from the wood mass with the width 0.8 mcm, covering internal surface of wood completely. The method of manufacture of the named plain bearing is also offered which comprises the manufacture of segments (4) of compressed impregnated wood with a radial arrangement of fibres and radiuses of rounding of the future bearing, application of glue, installation into auxiliary cartridge clip (1), pressing through a cone (2) with a cone angle (2), allowing to increase a density up to the value 1350 kg/m3 minimum, glue solidification and, if necessary, machining job along an internal diameter with a minimum rough tolerance.EFFECT: improvement of quality of a plain bearing and decrease of manufacture complexity.2 cl, 6 dwg, 1 tbl
Antifriction compressed wood for making parts of friction // 2491162
FIELD: process engineering.SUBSTANCE: invention relates to fabrication of antifriction materials on the basis of compressed wood and may be used in machine building. Compressed wood id impregnated with the melt of gem wax, polyethylsiloxane and animal fat.EFFECT: higher wear resistance, longer life at negative operating temperatures.2 tbl

Unit of friction with bearing from pressed wood // 2462626
FIELD: machine building.SUBSTANCE: unit of friction with a bearing from pressed wood in the form of a reverse pair of friction comprises a shaft (or an axis) (1), on which an inner shell is rigidly fixed with a sector bushing (5) from pressed wood with radial arrangement of fibres, and an external metal shell (6), fixed in the friction unit body. The bushing (5), having an outer external spherical surface of friction, is pressed at both sides by compensating rings (7), arranged from a material having a high coefficient of temperature expansion. The shell (6), installed as capable of rotation and embracing the bushing (5), has a concave spherical shape of friction surface and may be fixed in the body of the friction unit by different methods.EFFECT: higher strength, reliability and serviceability of a friction unit as a whole by stabilisation of mechanical properties under various temperature conditions of operation.2 cl, 1 dwg

Gas static bearing // 2408801
FIELD: machine building.SUBSTANCE: gas static bearing consists of case (4), chamber (1) communicating with supplying main (3) and of insertion installed inside case (4) and closing chamber (1). The insertion consists of gas-proof bushing (5) in orifices of which there are installed porous pieces (2) at least more, than two in form of a key. Pieces (2) are of different length and are arranged alternately by length, also, length of one piece (2) equals to 0.67 of bearing length, while length of another equals to 0.5 of bearing length.EFFECT: improved distribution of gas pressure in gap of bearing in region adjoining ends of bearing due to amplified effect of lubricating wedge formed with different dimensions of pieces length.2 dwg

Gas-static bearing // 2357119
FIELD: machine building.SUBSTANCE: invention is related to machine building, mostly may be used in machines and devices with moving parts that operate in conditions of gas lubrication, for instance in spindles of metalworking machines. Gas-static bearing consists of body, chamber that communicates to supply manifold with insert installed inside body to close chamber. Insert is arranged in the form of bush from gasproof material and porous inserts installed in bush holes. Porous inserts are arranged in the form of keys and are installed in two rows, at that width of every insert is equal to 0.15-0.20 of bearing diametre, length of every insert is equal to 0.26-0.35 of bearing length. Number of inserts in one row of supercharge is equal to 10-14. Separation of supercharge lines makes 0.5 of bearing length and defines distance between centers of every rows inserts along axis of insert symmetry, which is perpendicular to bearing ends.EFFECT: increased intensity of shaft operation and reduction of time required for shaft running-out for working frequency.2 dwg

Gas static bearing // 2299360
FIELD: mechanical engineering.SUBSTANCE: gas static bearing comprises housing, chamber connected with the supplying pipeline provided with insert that is mounted inside the housing and covers the housing. The insert is made of a bushing made of a gas proof material and porous inserts. The porous inserts are mounted in the openings of the bushing and made of keys. The inserts are arranged in two rows.EFFECT: enhanced quality.3 cl, 1 tbl

Slider bearing // 2286489
FIELD: mechanical engineering.SUBSTANCE: slider bearing comprises bearing bushing and insert set in the bushing and made of a wood-metallic composition having heat conducting members made of antifriction metallic material. The wood-metallic composition is compressed. The percentage of metallic component ranges within 5 to 25 per cents of the total volume of the material of the insert, and the metallic component is uniformly distributed over the thickness and length of the insert. The heat-conducting members of the metallic component are spherical in shape, with a diameter of the spheres from 0.2 to 6.5 mm.EFFECT: enhanced durability and simplified structure.1 cl, 1 dwg, 1 tbl

Friction unit with radial-axial bearing // 2279573
FIELD: mechanical engineering.SUBSTANCE: friction unit comprises unmovable axle of the roller (wheel), sector bushing with outer friction surface made of modified wood and secured to the axle, and metallic race mounted inside the housing of the roller (wheel hub) with convex friction surface. The friction surface of the sector bushing is spherical and convex inward. The sector bushing is secured to the unmovable axle of the roller (wheel ) and is clamped from both sides by locking conical rings, face screw, and shaped nut. The metallic race mounted for permitting rotation and embracing the bushing is provided with convex spherical friction surface and secured inside the roller housing (wheel hub) having clamping flat rings with bolts.EFFECT: enhanced reliability.2 cl, 2 dwg

The friction with radial-axial bearing of the modified wood // 2222724
The invention relates to mechanical engineering and can be used in slide bearing, experiencing in addition to radial loads, axial displacement and dynamic loads

odified wood for the manufacture of parts friction // 2197510
The invention relates to the field of creation of antifriction materials based on pressure-treated wood and can be used in mechanical engineering

Gas-static bearing // 2196926
The invention relates to the field of mechanical engineering, mainly can be used in machines and devices with moving parts operating under conditions of gas lubrication

Gas-static bearing // 2194889
The invention relates to the field of engineering, mainly can be used in machines and devices with moving parts operating under conditions of gas lubrication

The method of obtaining the modified wood // 2186676
The invention relates to woodworking industry, in particular to the fabrication of the modified wood, and can find application in the furniture industry, mechanical engineering, silkscreen as a substitute bearings
Porous liner gas-static bearing and method of processing // 2186268
The invention relates to the field of engineering, mainly can be used in machines and devices with moving parts operating under conditions of gas lubrication

Gas-static bearing // 2185532
The invention relates to the field of mechanical engineering, mainly can be used in machines and devices with moving parts operating under conditions of gas lubrication

Gas-static bearing // 2171924
The invention relates to the field of engineering, mainly can be used in machines and devices with moving parts operating under conditions of gas lubrication

A method of manufacturing a self-lubricating sliding bearing // 2123624
The invention relates to powder metallurgy and can be used for self-lubricating bearings

The slide bearing // 2084717
The invention relates to mechanical engineering and can be used in the bearings of the shafts of the various machines, in particular, in water pumping units
 
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