Die for die forging
(57) Abstract:The inventive stamp for three-dimensional stamping has power cage, which has a matrix consisting of two split along the axis of the die sections, the punch and the ejector with a stove. The inner surface of the sections of the matrix below the work area, performed stepwise, and the ejector plate is based on educated thus the horizontal platform. Below the pair of the inner surface of the sections of the die plate ejector plate and the partition matrix is made conical with a broadening bottom. Edge areas of the sections of the matrix are located within the outline of the engraving of the stamp, and the outer face of the plate ejector outer loop prints. 1 Il. The invention relates to the processing of metals by pressure, namely, to designs of dies for die forging, mostly hollow products drive type automobile wheels.A device for forming processes containing placed in a conical tip seat power cage composite matrix, the punch, the ejector elements and extract the matrix from socket 
The closest in technical essence to the proposed device Awami split matrix, section which is pivotally connected with the yoke and the ejector with the plate in contact with the matrix  In the known device the detachable section of the matrix are connected with the yoke by means of hinges. Pushing the finished product comes together with the disclosure sections of the matrix through progressive and at the same time their rotational movement about the axis of the hinges. However, it is impossible to extract product having a shape characterized by the presence of upper and lower flanges forming the undercut outer cylindrical surface (for example, products spear drive road wheels). While pulling such products will be jamming them in the engraving of the stamp or broken geometry of the finished stamping.Object of the invention is the realization of the possibility of forming articles having upper and lower flanges forming the outer undercut, for example products drive type automobile wheels. The technical result obtained by the proposed invention is the removal of the jamming jamming products when popping (removing) from the die and thereby saving its shape without distortion.Set the IMU, the plug is placed in the tip seat holder detachable matrix and the ejector with the plate in contact with the matrix, provided with rods to move the sections of the matrix perpendicular to the longitudinal axis of the punch and the ejector plate is placed with the surface coverage sections of the matrix in close their position and without freedom of movement when filled engraving and extracted the punch.In the drawing in the left part presents the proposed stamp before stamping process in position, when the matrix is raised above the power holder, and in the right end position after completion of the stamping process.The stamp contains the power holder 1, on which the matrix 2, consisting of two split along the axis of the stamp sections. Matrix 2 is installed in the tip seat of power of the holder 1, which serves for fixing sections of the matrix in the original position and aligning them relative to the punch. On site And sections of the matrix 2 relies plate 3 ejector in contact with the inner surfaces of the sections of the matrix. Plate 3 of the ejector and the partition matrix closed up when filled engraving and extracted the punch 4 is a rigid system and does not have a relative freedom of movement is toward the punch. The punch 4 is performed in accordance with the size of the internal cavity of stamping products and is installed in the top plate, fastened to the cross beam of the press. Thrust 6, serving for the connector sections of the matrix 2 in the direction perpendicular to the axis of the punch, are located in the slots of the power holder 4.Stamp works as follows. Heated source of the workpiece installed in the cavity formed closed sections of the matrix 2 and the plate 3 of the ejector. Swing beam press start the process of deformation of the workpiece 7 by the punch 4. As a result, the metal is extruded into the space between the working parts of the matrix, the punch and the surface of the ejector plate. This section of the matrix 2, subjected to radial pressure of the metal held by the forces of friction between the surfaces of the matrix and power clip 1, increasing in proportion to the force of deformation.At the end of the deformation process, the punch 4 is raised to its original position, raise the matrix 2 of landing slots of the casing 1 and with tie rods 6 assign them to the side. Then the finished item 8 is removed from plate 3 eject, close up section of the matrix and begin a new cycle of stamping. STAMP FOR massive FORMING, with nachinaushei matrix, characterized in that it is equipped with rods to move the sections of the matrix perpendicular to the longitudinal axis of the punch and the ejector plate is placed with the surface coverage sections of the matrix in close their position and without freedom of movement when filled engraving and extracted the punch.
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
FIELD: plastic metal working with use of intensive plastic deformation, namely manufacture of nano-crystalline materials with improved degree of mechanical properties.
SUBSTANCE: die set includes slider and plate restricting inlet duct; stationary stop closing inlet duct and restricting together with plate outlet duct; ram and member for knocking out blank. Said member is joined with motion drive unit and it is mounted with possibility of introducing into additional through duct formed in slider. According to first variant of invention at initial position of slider its through duct is arranged in front of outlet duct. Slider may be shifter before starting pressing process by value exceeding size of through duct. According to second variant of invention through duct of slider is arranged in front of outlet duct in lower limit position of slider. Said cone-shape through duct of slider is closed by means of plug pressed-in to it.
EFFECT: improved design providing possibility for extracting last blank out of outlet duct before starting pressing of next lot of blanks.
2 cl, 5 dwg