Stabbing or piercing, e.g. for making sieves (B21D31/02)

Hollow part, method and device for its fabrication // 2564766
FIELD: process engineering.SUBSTANCE: fabrication of hollow part for vehicle composed by jointing of preformed elements from sheet material. This process comprises drilling of the first bore by pressing of spinning drill to one of said elements of sheet material for thermal drilling to make the first circular ledge ay the bore inner surface. Drill is withdrawn from made bore to drill second bore at the other element at the point opposite said bore. Spinning drill is pressed for thermal drilling to the other element in direction perpendicular to the surface of said other element. Besides, this is performed in internal direction to make another circular ledge and to make cylindrical connecting element by fusing of said second and first circular ledges. Invention covers also the hollow part for vehicle and device for its fabrication.EFFECT: higher strength, lower costs and good working conditions.4 cl, 11 dwg

achine for production of cutting-drawing screen of sheet material // 2556262
FIELD: process engineering.SUBSTANCE: invention relates to forge-and-press equipment, particularly to machine for stamping grates from sheets. Moving knife beam with cut-out blade is articulated with machine eccentric shaft. Note here that said beam is provided with straps and jaws arranged on beam both sides to displace in contact. Note also that said jaws have lubricant feed holes to contact with straps. Besides, fixed beam with fixed knife includes position adjustment mechanisms arranged at edges. Kinematic linkage of moving knife beam is composed of the first main kinematic link. The latter makes said moving knife beam with cut-out blade to swing relative to swing axis. Second auxiliary kinematic link drives the moving knife beam with cut-out blade in crosswise direction. Third kinematic link is composed of sheet stepwise feed mechanism.EFFECT: enhanced performances, higher quality.5 dwg

Device for punching of thin metal strip // 2500497
FIELD: process engineering.SUBSTANCE: invention relates to metal forming, particularly, to punching of precious metal (gold, silver) strip and can be used for fabrication of photo inverter switching buses in assembly of solar batteries and in production of solid-state micro- and nano systems. Proposed puncher is composed of the case with crosswise groove to accommodate the strip and cylindrical channel to accommodate hollow punch reciprocating therein. Punch piercing end is furnished with spring-loaded clamp interacting with female die aligned with the punch in the same channel. Said female die has opening sized to said piercing end and channels to evacuate its cavity. Note here that said cavity is communicated with strip punched parts collection unit. Strip drive comprises step motor and elastic pressure roller fitted on air drive axle to interact with step motor shaft. Second take-up bobbin bush is coupled with said motor via belt gearing.EFFECT: higher reliability and accuracy.5 dwg

eshy joint displacement section and method for its manufacturing // 2395653
FIELD: construction.SUBSTANCE: invention refers to construction industry, and namely to manufacturing and design of meshy joint displacement profile. Specified number of notch groups rows is arranged along the whole width to comply with number of sections simultaneously produced from single stock, avoiding areas of solid metal at its edges, between rows and groups of notches. In each row of notch group notches are equal to length, parallel to each other and are arranged at the angle opposite to each other. Further longitudinal chutes are shaped. In the subsequent stands of profile-bending mill notches are drawn due to serial formation of two walls coupled along radius to the specified height, from sections of solid metal symmetrically to longitudinal axis of each row of notch group. At the same time rows of notch groups are transformed into meshy sections with cells in the form of parallelogram. After section walls have been produced with specified height, chutes are rolled until horizontally flat. Further longitudinal cutting of stock is carried out. Then arched shape is imparted to flat bases of sections by rolls of profile-bending mill, and sections are cut with the necessary length. Sections have two side walls of specified height coupled along radius, and arched notched-drawn bases that outgo from them towards opposite directions with rows of cells in the form of parallelogram arranged at the angle to longitudinal axis towards each other.EFFECT: reduced consumption of metal.2 cl, 5 dwg

Perforated section for wall-partition carcass and method of its production // 2393041
FIELD: process engineering.SUBSTANCE: invention relates to construction and metal forming, particularly to design of perforated section with thickness below 1 mm used is structural element of wall-partition carcass, and to method of its production. Preset-length strip is fed from uncoiler into rotary unit rollers to produce lines of cutouts at strip central part along lengthwise axis, said cutouts being made at an angle to lengthwise axis and opposite each other. Then said strip is transferred to profile-iron banding mill to draw said cutouts in crosswise direction by mill rollers to produce perforated preset-value design. First, stiffness rib is formed along the strip axis of symmetry to clamp said strip, as well as corrugated locks to allow feeding and clamping workpiece on mill rollers in crosswise drawing. All pairs of mill rollers have equal crosswise configuration, but with increasing diametre, and are made so that ledges on one roller and mating recess on the other one comply with shape of corrugation in workpiece and are arranged in symmetry about the axis. Note here that every subsequent pair stays apart from the axis of symmetry by value higher compared with the pervious pair. Said value equals the ratio between perforated surface drawing and the number of mill stands used in its production. Perforated surface produced, horizontal smoothing of said strip is effected by rolling aforesaid stiffness rib and corrugation. Then successive continuous metal deformation is performed till preset cross section profile is produced by bending the strip by pair of roller of profile-iron banding mill. Said profile has wall whereon rows of rhomb-like cells are arranged in symmetry about lengthwise axis and directed at an angle to the latter opposite each other.EFFECT: expanded performances.2 cl, 2 dwg

ethod for thermoprofile production and transfer line of cold shaping to implement method // 2337783
FIELD: technological processes.SUBSTANCE: method for thermoprofile production involves strip feed to profile bending mill, sequential transit-wise element overcast by profile-bending mill rollers, perforation of slit row with deflanging in apron form, in checkered order on profile wall. Before feeding to profile-bending mill strip is unrolled from roll and shifted to form compensation loop. After perforation of slit row the profile surface is evened in leveling unit with further profile cutting at given length. Transfer line of cold shaping for thermoprofile production includes profile-bending mill with instrumental adjustments, device for perforation of checkered pattern of slits deflanged in apron form in wall of continuously moving profile. Unrolling and receiving units are positioned in series before profile-bending mill, and after slit perforation device a cutter is positioned. Slit perforation device features leveling unit.EFFECT: extended functional capacities.2 cl, 1 dwg

Instrument for plastic drilling // 2335370
FIELD: technological processes.SUBSTANCE: instrument contains a working part with symmetric, against an instrument, axis shaped cross-section having the sides with small curvature, including conic, having peaked aligning element, both prismatic sections and a shaft. The working part is supplied with additional conic and prismatic sections, shaped cross-sections corresponding to sections of the conic and prismatic sections, sequentially located between a prismatic section and a shaft. Thus four cutting cogs are rigidly fixed on an additional prismatic section on the sides with small curvature, uniformly located against each other.EFFECT: productivity increase.8 dwg

achine for making cut-through expanded net of sheet material // 2281180
FIELD: forging press equipment, namely machines for forging nets.SUBSTANCE: machine includes housing supporting drive unit, eccentric shaft, movable beam with cut-through cutter, table with stationary cutter and mechanism for feeding sheet material. Cut-through cutter is double-sided one and it may be readjusted. Cutter carrying beam is joined with eccentric shaft through first kinematic circuit for providing rocking motion of beam and through second additional kinematic circuit for providing cross motion of beam. First kinematic circuit includes crank joined with eccentric shaft, slides with stops and main adjusting connecting link. Second kinematic circuit includes cam mechanism, additional adjusting connecting link and rocker arm.EFFECT: enlarged manufacturing possibilities of machine, increased useful life period of machine.3 dwg

ethod for making grid or grid shape // 2275268
FIELD: plastic working of metals, possibly manufacture of metallic grids or grid shapes.SUBSTANCE: method comprises steps of forming in blank row of notches of the same length arranged in staggered fashion; further deformation of blank by tensioning it. Notches in rows are inclined relative to lengthwise symmetry axis of blank at remaining portions of solid metal. Blank is tensioned by applying to solid metal portions pair of forces directed vertically and simultaneously in said solid metal portions lengthwise grooves are formed. At forming grid solid metal portions are formed along edges of blank. At making grid shape, symmetrical groups of rows of notches are formed in pairs; solid metal portions are formed along edges of blank and between rows of notches. Lengthwise corrugations are formed at tensioning blank. Symmetry axes of corrugations and of lengthwise grooves are arranged along symmetry axis of each solid metal portion arranged between rows of notches.EFFECT: enhanced efficiency of method.5 cl, 13 dwg

Device for making slots on continuously moving section // 2261771
FIELD: mechanical engineering; plastic metal working.SUBSTANCE: proposed device contains lower drive shaft installed in two fixed housing on which punch with pack of cutting disks is installed, two movable housing in which two adjusting nuts with screws are mounted, and upper shaft with die in form of pack of disk. Movable housing are made for displacement in vertical plane along two columns installed in fixed housing. Disks of die differ in diameter, with alternation of larger diameter disk and smaller diameter disk. Outer surface of blades of punch cutting disk has cylindrical and conical sectional of corresponding width and tilting of generatrix of cylindrical section at angle to axis of symmetry of cutting disk. Disks with cylindrical outer surface are fitted between cutting disks. Diameter of said disks is less than diameter of cutting disks. Disks of die of smaller diameter are arranged over cutting disks, and disks of die of larger diameter are arranged over disks of punches with cylindrical outer surface.EFFECT: enlarged operating capabilities owing to changing of shape and size of slots.3 cl, 1 ex, 10 dwg

A method of manufacturing a curved grids // 2206423
The invention relates to the field of metal forming and can be used in the manufacture of nets sealing flange connections, improved reliability of gas and oil pipelines

achine for punching mesh sheet material // 2202428
The invention relates to the field of forging machinery

achine for making expanded metal mesh sheet material // 2198758
The invention relates to forging production, in particular for punching mesh sheet material

A method of manufacturing slotted holes of the filter and the spray element and filter and spray element // 2191086
The invention relates to the field of power engineering and can be used in many areas of the economy, it is designed for cleaning and spraying of liquid (water, etc.,), namely in switchgears water treatment filters for thermal power plants (TPP) and other power plants

ethod of manufacturing metal mesh // 2187402
The invention relates to the production of wire products and can be used in the metallurgical, machine-building and construction industries

The stretching device of prefabricated one-piece metal mesh // 2187401
The invention relates to the production of wire products and can be used in the metallurgical, machine-building and construction industries

A method of manufacturing expanded metal mesh // 2146179
The invention relates to the processing of metals by pressure and can be used for mass production of expanded metal mesh of the blank-strip

Line for the production of expanded metal mesh // 2117543
The invention relates to the processing of metals by pressure and can be used for mass production of expanded metal mesh tape or sheet material

The device for manufacturing a slotted element // 2089314
The invention relates to the processing of metals by pressure and can be used in the manufacture of slotted elements water treatment filter for purifying feed water power plants (boilers)