Stamp for differential forming elongated forgings
(57) Abstract:The invention relates to the processing of metals by pressure and can be used in the manufacture of precisely forged blanks. The essence of the invention: in the upper support plate of the stamp is made of the power cylinder without the drive to the shaft of which is fixed section can move in the guide, installed in the upper support plate of the stamp. Section secures one of the die inserts of the upper tool Assembly, the die insert the support surface, providing a hold of one of the punching insert stationary, while is the deformation of the workpiece other die insert. 1 Il. The invention relates to the processing of metals by pressure, namely the stamps for the differential deformation, and can be used in the manufacture of precisely forged blanks, such as the compressor blades.Famous stamp for the manufacture of long products containing placed on the base housing and mounted therein forming part made in the form of sequentially disposed along the length of the billet sections including upper and lower stanislavki, and placed between the last and poloskami adapters with heating elements and insulating spacers and the base has guides for placement of the housing, provided with a drive move a step equal to the distance between the sections, each of which are mounted the power cylinders of the reciprocating movement .The lack of a stamp is the high complexity of the stamp, due, in particular, the presence of an individual drive for each partition, due to the introduction of the power cylinders of the reciprocating motion.Closest to the proposed invention is a stamp for the differential stamping, containing a base, a housing, upper support plate, guide plate, the upper tool block, made in the form of sequentially disposed along the length of the workpiece die inserts with links of their movements made in the form of a two-tier mechanisms and hinges. This links pivotally connected with die inserts, made with shoulders at the ends of which are poloski, mounted for movement in a vertical guide grooves of the guide plate, made cylindricus the high complexity, due, in particular, the presence of two mechanisms and the upper guide housing, and low reliability due to rapid wear a pair of guide plate-Polushka.The challenge which seeks the invention is to simplify the design of the stamp due to the exclusion of two mechanisms, the upper guide housing and improving the reliability of the device by eliminating wear of structural elements, porzucek and the guide plate.This is achieved by the fact that the stamp for the differential forming elongated forgings containing the lower support plate to the guide housing and the lower die insert, the upper support plate, bearing successively spaced along the length of the billet upper die insert differs from the prototype in that the upper support plate is made non-driving power cylinder on the rod which is fixed section can move in the guide rails mounted on the upper support plate section attached to one of the upper die inserts, and it made bearing surface for engagement with the guide body.The drawing shows the Prince the n power cylinder without actuator valve 3 release liquid, valve 4 of the intake fluid, the piston 5 and the rod 6, to which is attached the section 7 can be moved in the guide rails 8 mounted in the upper support plate 1. To section 7 and to the upper support plate 1 are fixed independent of die inserts 9 and 10. Box 9 the support surface 11. On the lower support plate 2 has a lower guide body 12, including the lower die box 13. The original workpiece 14 for punching laid in the Creek stamp of the closed type, formed by the lower die insert 13 and the lower guiding body 12.Stamp works as follows.Heated to the temperature of the forging of a cylindrical billet 14 is placed in the stream of the stamp. When moving the upper support plate 1 down valves 3 release and intake 4 fluid closed, movement is communicated through the fluid, the piston 5, the piston rod 6 of the cylinder section 7 and directly from the top of base plate 1 die inserts 9 and 10. Die insert 9 in the initial state of the stamp is located below the die insert 10 on the stroke of piston rod 6 cylinder. Therefore, the insert 9 first comes into contact with the workpiece 14 and deforms it. The deformation part of the insert 9 is continued until the reference p is t 3 opens, the liquid is expelled from the cylinder, the insert 9 is stopped, the cylinder rod 6 holds it in the down position. Die box 9 stationary die insert 10, continuing to move down, comes into contact with a part of the workpiece 14 and testamonial the remainder of the workpiece 14.When moving the upper support plate 1 up die insert 10, which is directly linked with the upper base plate 1, the first moves up. When moving the upper support plate 1 up to a distance equal to the fly rod 6 cylinder, the clearance between the lower end surface of the piston 5 of the cylinder and the surface of the cylinder is selected, movement is communicated to the piston 5, the piston rod 6 cylinder, and section 7 moves progressively upwards, carrying a die insert 9. Die inserts 9 and 10 extend from the lower guide body 12 are moved upward, and the liquid through the valve 4 of the intake enters the cylinder from the water tank (not shown).Stamped product is ejected from the lower guide body 12 of the lower die insert 13, driven by the ejector press (not shown).The invention allows to simplify the design of the stamp and to increase reliability is 6967, 21 J 13/02, 1996. Stamp for differential forming elongated forgings containing the lower support plate to the guide housing and the lower die insert, the upper support plate, bearing successively spaced along the length of the billet upper die insert, characterized in that the upper support plate is made non-driving power cylinder on the rod which is fixed section can move in the guide rails mounted on the upper support plate to the fixed section one of the upper die inserts and the support surface for engagement with the guide housing.
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