A method of manufacturing from a strip of flat forgings with a long axis
(57) Abstract:The invention relates to the processing of metals by pressure and can be used in the manufacture of forgings by forging. Forgings produced from the heated strip in the working area of the stamp. For this purpose, a separate cutting the workpiece 9 of the band 8 on the position of stamping, move it to the mirror 7 of the stamp, fixed, oriented along the positions of the stamp, connect with grips and removed from the space position of the cutting on the first position of the stamping 15. While moving the first workpiece 9 in the first position the stamping 15 and processing there hot strip nominated to the position of the cutting and cut off another workpiece 14. Then the first workpiece 9 is treated in the following 16, 17 two positions stamping and removed from the working area of the stamp. The next 14 procurement, passing through all the positions, after the first falls on the first position of the stamping 15, when the first workpiece 9 is removed from the working area of the stamp. The result is increased reliability stamping forging of the strip by improving the quality of individual operations. 2 C.p. f-crystals, 7 Il. The invention relates to the processing of metals by pressure and can be used when output is to an elongated axis mnogovershinnoe stamping, includes heating the strip, its periodic filing with the stamp, cutting strips of movement of the upper half of the stamp with obtaining a measured workpiece, moving it to the level mirrors stamp, the orientation of the workpiece relative positions of the punching by its rotation, extrusion of a metal workpiece at its ends for connection with the seizure and transfer of workpiece grippers on the first and subsequent positions stamping to ensure its processing .However, the loose harvesting is not controlled when moving during the operation, the orientation of the workpiece relative positions of the punching by means of its rotation, which often leads to violation of the positioning of the workpiece and reduce reliability of the operation. In addition, the lack of quality forgings and reduced tool life due to the inability to carry out mnogovershinnoe stamping because of the lack of space of the working area. The deficiencies noted in the aggregate, reduce reliability.The task of improving the reliability stamping forging of the strip due to the improved performance of individual operations.This goal is achieved by a method of manufacture of the strip forgings with a long ofigenie the upper half of the stamp with obtaining a measured workpiece, move it to the mirror of the stamp, the orientation of the workpiece relative positions of the punching by its rotation, extrusion of a metal workpiece at its ends for connection with the seizure and transfer of workpiece grippers on the first and subsequent positions stamping to ensure its processing, in which the movement of the workpiece on the level mirrors stamp movement of the upper half of the stamp in position under the cutting position, thus produce the recording, and the rotation of the workpiece is carried out in a fixed position. After extrusion of the metal of the workpiece it is removed from the committed state, and in the process of moving the workpiece in the first position forming and processing it at the specified position push the heated strip on the position of the cuttings and produce the cutting of the receipt of the next measured the workpiece.In the process of orientation of the workpiece relative positions of the punching produce bending.In addition, when moving derived from the committed state of the workpiece at a first position forming at least once produce performance connection of workpiece grippers.Workholding shifts the beginning of the execution under each other in the working area of the stamp operations logging logging and recording it on the mirror stamp allows to combine in the working area a sufficient number of operations in order to improve the machining quality of the workpiece at each of them and the reliability of operations.In Fig.1 to 6 shows a device for implementing the method (top view) in accordance with the performed operations, and Fig.7 is a section of the device of Fig.4.A device for implementing the method comprises a bottom 1 and top 2 half stamp, chain conveyor 3 billets set along the stamp on the flow paths of the fin 4, and the actuator (not shown). The lower half of the stamp is provided with a rotary disc 5 slot 6 to the level of the mirror 7 of the stamp to keep just severed from the strip 8 of the workpiece 9. Above the slot 6 is made knife 10. The knife 10 is made in the form of the guillotine: the lower half of the knife is located above a position adjustable relative to the upper, which is made together with the upper half of the stamp. The knife is made across the width of the stamp so that it allows placement of the protrusions 11 for extrusion of metal from the ends of the billet grips, i.e., in the gaps between the chain links 3. The stamp on the width ends of the lugs 11 for extruding metal parts of the workpiece at its ends for connection with grippers 3.If necessary, next to the disk 5 set the stops 12, p is Westley as follows.Heated to forging temperature, the strip 8 serves to stamp with overhanging it, including the measured workpiece 9, above adjacent positions, i.e., the blade 10 (Fig. 7). Then the band stopped and the movement of the upper half 2 of the stamp to the lower half, i.e. the guillotine produce the measured cutting blanks from the strip. This same movement of the upper half of the stamp her move down and placed in the slot 6 of the disk 5 on the level of the mirror 7 of the stamp (Fig.1). When the movement of the upper half of the stamp upside rotation of the disc 5 is fixed therein Orient the workpiece relative to the position of stamping and grabs 3 (Transporter). If necessary, in the process of turning the workpiece bend, and the stamp must be provided with lugs 12 (Fig.2). Flexible is in the process turning disc 5 middle part (located in the slots of the disc), while the end part thereof is stopped by the stops 12.The upper half of the stamp (downward movement), provided with lugs 11, strike at the ends of the workpiece (see Fig.1) outside of the knife 10. The attack was made on the ends of the workpiece metal is squeezed into the gaps between the links of the chain conveyor 3, i.e., perform the connection of workpiece grippers.(RBW U-shaped trajectory: stamp up the workpiece is removed from the slot 6 of the disk, i.e., fixed position and move to the next position; stamp down her stack on the position and process.In this case, if the length of the space position of cutting more than one step between the positions, at least once produce performance connection of the workpiece (Fig.2, 3) c clamps 3 intermediate position 13.The strip 8 at this time is still not fed to the cutting position. Then another cycle: the punch moves upwards, raise the workpiece above the position (band maintains), stamp down - moves the workpiece continue, and the heated strip serves to stamp cutting position and cut off another workpiece 14. By this time the first workpiece 9 is already laid in position 15 stamping and processed (Fig. 4) simultaneously with the cutting of the next workpiece 14. The movement of the stamp, which cut off the next workpiece 14, direct that the next workpiece in the slot of the disk 5 (Fig. 4). While the previous (first) of the workpiece 9 is moved for the following positions 16, 17, another workpiece 14 Orient and connect with grippers 3, raise (Fig.5) and output (Fig. 6) from under the space felling. The band leave fixed up until ocherednuiu of the steel strip steel (40X) section 10150 mm. Billet receive two operations without waste: cutting from a strip of curly strips and flexible severed strips. Figure severed workpiece corresponds to the distribution of metal in the Allen key in the middle part is equal to 17 mm at both ends of the width of 53 mm, length 295 mm, after bending its length is 300 mm, which provides a uniform distribution of metal in the stream of the stamp. Getting blanks and all further operations upon receipt of the forging is performed with a single heated to the forging temperature of 1100-1150o. Department figured blanks occurs when the movement of the blade with the speed of 5-7 m/s, which allows to obtain the distortion and burrs within the acceptable range. At the end of this movement the workpiece is carried out in the slot 6 drive than carry out fixing it. The rotation of the disk to rotate and bend the workpiece, orienting it relative to the position of the stamp, the maximum approaching the ends of the workpiece to the hooks. Then squeeze the metal on the ends of the workpiece to obtain connection with its grippers and release from fixation, extracting from the slits of the disk 5. Released from fixing the workpiece is moved under the space position logging onto the intermediate position 13, which produces performance connection of workpiece grippers.Sources of information taken into account
1. USSR author's certificate 1018775, ÁL 21 TO 5/16, priority, 7.08.1981 1. A method of manufacturing from a strip of flat forgings with a long axis mnogovershinnoe stamping, comprising heating the strip, its periodic filing with the stamp, cutting strips of movement of the upper half of the stamp with obtaining a measured workpiece, moving it to the level mirrors stamp, the orientation of the workpiece relative positions of the punching by its rotation, extrusion of a metal workpiece at its ends for connection with the seizure and transfer of workpiece grippers on the first and subsequent positions stamping to ensure its processing, characterized in that the movement of the workpiece on the level mirrors stamp is performed by the movement of the upper half of the stamp in position under the cutting position, this produce fixed, and the rotation of the workpiece is carried out in zafy is acesse move the workpiece in the first position forming and processing it at the specified position push the heated strip on the position of the cuttings and produce the cutting of the receipt of the next measured the workpiece.2. The method according to p. 1, characterized in that the process orientation of the workpiece relative positions of the punching produce bending it.3. The method according to any of paragraphs. 1 and 2, characterized in that when moving derived from the committed state of the workpiece at a first position forming at least once produce performance connection of workpiece grippers.
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