(57) Abstract:Usage: tools for cold forming processes and can be used for volume stamping parts with internal cavities of complex shapes and drawing complex tubular profiles. Essence: in the plug-sending, comprising a housing, pravachol portion and deforming part, the latter is in the form of the prestressing sleeve with a spherical outer surface, with the convex side of the sharp edge adjacent to otpravochnoe part. 4 Il. The invention relates to a tool for cold forming processes and can be used for three-dimensional stamping parts with internal cavities of complex shapes and drawing complex tubular profiles.Known carbide floating mandrel containing a steel rod with a head, impaled on him the frame and located between the damper sleeve is made conical with the base towards the head of the rod of material on a polymer basis filler 
The disadvantage of the mandrel is its low resistance due to the fact that the internal diameter of the sleeve does not have power circuit at the Central part of the mandrel, cu> Closest to the claimed technical solution is the punch-tool, comprising a housing, pravachol portion and deforming part 
Known punch-the mandrel can be considered as an Assembly tool having pravachol portion and deforming the part. The absence of a deforming part of the site, adjacent in time stamping to otpravochnoe part to ensure gapless interface (landing), reduces tool life.In case of a known punch as a single drop diameters tail and deforming form a weak section, which also leads to decrease in resistance.The technical result achieved by the present invention is to increase the durability of the punch and reducing the complexity of its manufacture.This is achieved by the fact that the punch-mandrel, comprising a housing, pravachol part and a deforming portion, deforming part is made in the form of the prestressing sleeve with a spherical outer surface, with the convex side of the sharp edge adjacent to otpravochnoe part.In Fig. 1 shows a punch-die, longitudinal section; Fig. 2 section a-a in Fig. 1; Fig. 3 scheme of deforming in the USA 1, in which is installed otpravochnaya part 2, deforming part 3, which is made in the form of the prestressing sleeve with a spherical outer surface, with the convex side of the sharp edge adjacent to otpravochnoe part. Deforming a portion pressed on pravachol part that provides a decrease in the percentage of elastic deformation of the compression deforming part, which takes the reaction of the stamped part.The sharp edge (indicated by the letter C), adhering to otpravochnoe part 2, provides the non-disclosure of intersection of the diameter D. the Nut 4 and the pin 5 are designed for the Assembly of the punch-holder and mount them in the stamp.The Assembly of the punch-frame is performed in the following sequence.Deforming part is pressed in a reduced state on pravachol part. Thus deforming part due to their structural features (tonkostennoy) deformed (stretched) at the expense of tightness in the press fit and becomes pre-tense element. This subassembly is mounted in the housing by means of studs 5 and the nut 4. This design allows quick replacement of worn parts punch-clamps. To do this, simply Unscrew the nut and seawusa part 3 draws spherical part of the stamped part, and the diameter D otpravochnoe part 2 of a cylindrical part, with the sharp edge provides a smooth transition between the surfaces.By forging force and reaction stamped part (see Fig. 2) is the elastic deformation of the compression deforming part 3 and the landing diameter D, since landing in working condition changes its original characteristic has working landing on compression for the reduction of diameter D. Deforming and otpravochnaya parts are usually made of steel R6M5, which provides good durability with great effort of compression. The PUNCH-TOOL, comprising a housing, pravachol portion and deforming part, characterized in that the deforming part is made in the form of the prestressing sleeve with a spherical outer surface, with the convex side of the sharp edge adjacent to otpravochnoe part.
FIELD: technological processes; metallurgy.
SUBSTANCE: mandrel for drawing of pipes is arranged in the form of set of single-type elements with profile external surface and internal holes, every of which is equipped with elastic compression element and has conical protrusion on its one end, and conical-cylindrical cavity - on the other end. Flexible element with end supports is pulled through the holes. At that conical part of single-type elements corresponds to conical protrusion, length of conical protrusion in axial direction is less than the length of conical part of cavity for provision of tight pressing of end of every previous element to the next one. Mentioned elastic compression element is installed in cylindrical part of conical-cylindrical cavity.
EFFECT: higher accuracy of mandrel external surface manufacture.
FIELD: metal working.
SUBSTANCE: hard alloy matrix has casing, bushing pressed in the case and hard alloy insertion. Bushing has multifaced hole. Hard alloy insertion is composed by several sections made in form of trapezoidal-section prisms which have cut angles at their non-working edges. Number of sections corresponds to number of faces of item to be headed. Cuts of angles are made symmetrically to faces of working edge. Slits are made in several places of multifaced hole bushing at the ponts where faces cross each other.
EFFECT: improved resistance of matrix; simplified assembly.
3 cl, 1 dwg
FIELD: forging and forming processes and equipment, namely manufacture of elongated forgings with thickened portions and lateral branches.
SUBSTANCE: die set includes deforming punch, die with vertical parting, struts in the form of truncated pyramids having wedge-shaped slopes for mounting die; units for securing struts to supporting plate. Die is placed in struts with possibility of motion relative to them. Struts have double-sided mutually opposite slopes. Elastic member is placed under die. Maximum compression value of said elastic member by means of effort corresponding to effort of clamping die halves in struts is equal to value of descending die at forging process.
EFFECT: enhanced reliability and rigidity of die set.
2 cl, 1 dwg, 1 ex
FIELD: plastic working of metals, possibly operations for finish working of forgings of double-end box nut wrenches.
SUBSTANCE: die set includes upper and lower plates with guiding columns, punch for punching operation mounted on upper plate, stripper, lower die for punching, half-open trimming lower die and trimming punch. Trimming lower die is mounted on upper plate; it has cutting edge and cavity arranged behind collar of cutting edge and designed for freely placing forging of nut wrench. Trimming punch is mounted on lower plate and it has embracing supporting surface for fixing forging at trimming and straightening operations.
EFFECT: enhanced quality of forging.
9 dwg, 1 ex
FIELD: plastic working of metals with use of intensive plastic deformation, production of nano-crystalline materials with improved mechanical properties.
SUBSTANCE: die set includes band in which cone insert having several parts is pressed; lower support; inlet and outlet ducts; ram. According to first variant of invention contours of parts of cone insert are restricted by means of two mutually normal planes and cone surface portion cut by said planes. Crossing line of said planes does not coincide with symmetry axis of cone surface. Inlet duct is formed by faces of cone insert parts arranged normally one relative to other and mutually joined; walls of said duct are in the form of portions of said planes. According to second variant of invention contours of cone insert parts are restricted by radius surface, by two mutually crossing planes and portion of cone surface cut by said planes. Crossing planes are mutually normal or they are inclined one relative to other by angle 120°. Axis of radius surface coincides with crossing line of said planes. Faces of cone insert parts are mutually joined; inlet duct is formed by their radius surfaces and outlet duct is formed by radius grooves.
EFFECT: lowered number of parts, reduced consumption of material for making cone insert.
4 cl, 10 dwg
FIELD: plastic working of meals, possibly manufacture of hollow parts such as sleeves, tubes, bushes by cold pressing out.
SUBSTANCE: method comprises steps of plastic deforming of blank at translation and rotation of deforming tool; realizing said motions of tool from separate drive units; setting speed of translation less than that of rotation and selecting relation of said speed values less than 2.5.
EFFECT: enhanced manufacturing possibilities of method.
2 cl, 2 dwg, 2 ex
FIELD: plastic working of metals, namely processes for pressing out shapes of aluminum base alloys, constructions of pressing out tools.
SUBSTANCE: method comprises steps of making blank, heating, hot pressing out of blank through die, heat treatment of shape. At pressing out blank is subjected in upper p[art of die to additional shearing deformations due to twisting it by angle in range 40 - 50° relative to axis of die. Die includes deforming cone, working rectangular collar and outlet zone. Deforming cone has two helical protrusions in the form of trapezium. Upper base of said trapezium is equal to length of rectangle of working collar; its lower base consists 1.5 - 2 of parts of said length value. Rotation angle of upper cross section of protrusion relative to its lower cross section is in range 40 - 50° relative to axis of die. In longitudinal cross section said protrusions are in the form of parabola.
EFFECT: possibility for making rectangular aluminum alloy shapes with enhanced mechanical characteristics and low anisotropy of their properties, improved design of die.
2 cl, 4 dwg, 1 ex, 1 tbl
FIELD: plastic working of metals, possibly forging ingots and billets in hydraulic forging presses.
SUBSTANCE: apparatus includes two holders of upper and lower strikers having inclined surfaces. Said holders are kinematically coupled with two holders of lateral strikers having inclined surfaces corresponding to those of holders of upper and lower strikers. Four strikers are secured to respective holders by means of clamps and tightening studs. Each of upper and lower strikers has two working portions mutually divided by cutout. Each of lateral strikers has one working portion entering cutouts of upper and lower strikers. At least one adjusting plate is placed between holder of lower striker and lower striker. Lower striker is secured to its holder by means of two Г-shaped clamps. Inclined surfaces of said clamps are forced to inclined surfaces of holder of lower striker; riffled surfaces of said clamps are forced to two friction plates arranged on lateral surfaces of lower striker. Pins passing through openings of adjustment plates and entering openings of holder of lower striker are mounted in lower striker.
EFFECT: lowered cost of making tool, reduced time period for readjustment of it.
2 cl, 5 dwg
FIELD: plastic working of metal, possibly in forging shops of metallurgical and machine engineering plants for making wheels of automobiles and similar articles.
SUBSTANCE: tool includes die, punch, knocking out member with shaped portion, unit for stepped regulation of bottom thickness and height of cup. Said unit is in the form of apparatuses for changing length of punch and depth of die. In upper part of punch female type yoke with through stepped opening is mounted. In upper part of die there is seat whose diameter dimension corresponds to outer diameter of yoke. Depth of die is changed by means of apparatus in the form of flat ring arranged over shaped portion of knocking out member. Apparatus for changing length of punch is in the form of flat round gasket arranged inside yoke over punch. Punch has in its upper portion large-diameter step corresponding to diameter of large step of yoke opening.
EFFECT: possibility for producing by means of one tool semi-finished products of wheels with different combinations of width and thickness values.
3 cl, 3 dwg
FIELD: metallurgy; metal plastic working.
SUBSTANCE: invention can be used in form forging shops of metallurgical and machine-building plant in manufacture of vehicle wheels and like articles. Proposed tool contains die and punch holder with punch and knock-out with shaped part movable relative to die. Punch is enclosed by replaceable round holder with support flat and support surface. Die is provided with socket in upper part whose diameter corresponds to outer diameter of holder, and with support flat. Holder is installed for longitudinal displacement and engagement by its support flat and support surface with support flat of die and with punch holder, respectively. Shaped part of knock-out is made replaceable to provide possibility of making wheels of different type-sizes using one tool.
EFFECT: enlarged operating capabilities.
2 cl, 2 dwg