Radial crimping machine
(57) Abstract:Use: in the manufacture of parts in forging forging production. The inventive machine has placed in the frame Boiky with drives their work and idling. The actuator stroke includes hydraulic cylinders with plungers, feed mechanism of liquid placed on a supporting glass, a brush on the arm. The actuator stroke is equipped with a plunger-emphasis installed in the cylinder coaxially with the plunger. Cavity of the hydraulic cylinder mechanism from the fluid actuator and the stroke is made communicating through the hollow stem passing through the glass and the plunger-stop. 1 Il. The invention relates to a press-forging equipment, namely, to designs of radial crimp machines.Known radial crimping machine, containing placed in the frame work cylinders with installed plungers, which are jaunty, mekhanogidravlicheskijj drive battery and triggers movement of the plungers and the cylinders reverse and mechanisms of regulation of the size of the workspace.Known also adopted for the prototype radial crimping machine, containing what plungers, the hydraulic mechanism of the fluid supply, and a mechanism for adjusting the position of the heads. Drive reverse of each striker made in the form of individual piston cylinder located in the bore of the cover corresponding cylinder of the actuator stroke, the plunger and piston of each pair of these cylinders are rigidly interconnected by means of a rod.One drawback of the machine is a low precision forging, due to the presence of the pipeline between mekhanogidravlicheskijj driven working rolls of the machine, reducing the rigidity of the machine and increasing its dimensions.The aim of the invention is to improve the accuracy of forging, size reduction machines.This is achieved by the radial crimping machine that contains a frame, which is installed jaunty drive their working and idling, including cylinders with plungers, hydraulic system mechanism of fluid supply, and a mechanism for adjusting the position brisk, the drive stroke of each firing pin provided with a bearing Cup mounted on the frame coaxially with the plunger in its cylinder, the latter placed the feeder fluid and provided with plekhanovites with hollow stem its cylinder, rigidly connected with the plunger-emphasis, while the cavity of the cylinder stroke and the mechanism of fluid made communicating through the hollow stem.The drawing shows a schematic diagram dvuhvekovoi radial crimping machine (possible performance machines with three, four, and a large number of strikers).Radial crimping machine has placed in the frame 1 working cylinders 2 with installed them two working pistons 3, which by means of plates 4 fixed Boiky 5, the mechanism for regulating the distance between the strikers, each of which is made in the form of fixed on the frame 1 with the reciprocating axial motion of the plunger-stop 6. The plunger-stop 6 is located in the bearing Cup 7 that is installed in the frame 1 coaxially with the operating plunger 3 and fixed therein by means of a split ring 8 and the conical sleeve 9. In the bearing Cup 7 posted by driving the wedge 10, interacting through the heel 11 having a spherical surface, with the plunger-emphasis 6. The wedge 10 is converted to the movement of the screw 12, the United thread with the worm wheel 13, which engages with the worm 14. The worm wheel 13 with the worm 14 are accommodated in the housing 15, mounted on the frame 7m powered by electric motor 18 (or motor) via a coupling 19. The plungers 3 are drawn in to the plungers of the lugs 6 by cylinders 20 reverse, the rods of which are connected with the plungers 3 and the housing mounted on the frame 1. To select the gap between the flange And the Cup 7, the split ring 8 and the bearing surface in the annular groove B of the base 1 is provided mounted on the frame of the additional cylinder 21 connected by its piston rod body 22 mekhanogidravlicheskijj drive (multiplier). An energy source (fluid under pressure battery) is supplied to the pipe 23 into the cylinder 21. Cavity C and D, formed by the working ends of the plungers 3 and plungers-stops 6, using hollow stem 24, is rigidly fixed in the hole of the plungers-lugs 6, is connected with the cavities D and E of the multiplier. In the housing 22 of the multiplier in the bearings are of the crank shaft 25 which is connected by rods 26 with the slide cylinder 27 that communicates with the hollow rod 24.The drive of the crank shaft 25 is, for example, by an electric motor 28. Synchronous rotation of the shafts 25 is controlled synchronously-like actuator (not shown). Seal working plungers 3, plungers-lugs 6, slide cylinder 27, the piston rod 24 is cuffs (not shown) by pipes 29 through reverse klaviatura 28 of the crank shaft 25 transmits motion to the slide cylinders 27 through the connecting rods 26. Occurs, fluid flow from the cavity D, E multiplier through the hollow stem 24 in the cavity C and D of the working cylinder 2. The plungers 3 and 5 jaunty make the stroke. During the reverse course of the displacement of fluid from the cavities In, G in the cavity D, E multiplier is supplied from cylinders 21-reverse, and a fixed stop working plungers 3 - in their approach to the plungers of the lugs 6.Change of die space (i.e. the size of the forging) is performed when enabling the motor 18 with the rotation of the worm 14, the worm wheel 13 and the movement of the wedges 10 by screws 12 and nuts in the inner surface of the worm wheel. The wedges 10, based on the supporting surface of the glass 7, the heel 11 move the plungers lugs 6, and with them moving workers plungers 3 with 5 strikers, because they are pressed by their ends to each other cylinders reverse. The drive motor 18 reversible, so Boiky 5 make a motion to the axis of the forging or from it.The advantage of the invention is to improve precision forging by increasing the rigidity of the machine by placing the multiplier in the frame on the supporting glass (i.e., excludes supply pipeline from the multiplier to the machine) the machine significantly reduces the size of the machine. (56) USSR Author's certificate N 612744, CL 21 J 7/16, 1976. RADIAL CRIMPING MACHINE that contains a frame, which has a jaunty, with drives of their working and idling, including cylinders with plungers, hydraulic system mechanism of fluid supply, and a mechanism for adjusting the position of the heads, characterized in that, to improve precision forging and reduce the size of the machine, the drive of the stroke of each firing pin provided with a bearing Cup mounted on the frame coaxially with the plunger in its cylinder, the latter placed the feeder fluid and provided with a plunger - stop located in the cylinder coaxially his plunger, and the mechanism of fluid made mekhanogidravlicheskijj with hollow stem its cylinder, is rigidly connected with the plunger-emphasis, while the cavity of the cylinder stroke and the mechanism of fluid made communicating through the hollow stem.
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 metals, namely constructions of radial swaging machines.
SUBSTANCE: in housing of machine four-striker swaging unit is mounted in the form of four kinematically joined one to other holders of strikers with inclined surfaces. Two holders have П-shaped contour, they embrace two other holders of strikers, arranged horizontally and joined with two sliders. The last are mounted with possibility of simultaneous reciprocation motion with the aid of common drive. Said drive is in the form of two crank mechanisms mounted horizontally and symmetrically relative to swaging unit. Strikers are secured to Said holders. Machine also includes devices for controlling position of strikers and for protecting drive members against overloads. Said devices are in the form of movable supports joined with crank mechanisms, screw pair, hydraulic cylinders and gear transmissions with electric drive.
EFFECT: enlarged manufacturing possibilities, enhanced operational reliability and efficiency of machine, simplified design of its drive unit.
FIELD: plastic working of metals, possibly radial forging of ingots and blanks.
SUBSTANCE: method comprises steps of forging heated blank in one set of strikers mounted in simultaneously moving holders at deformation degree 30 - 90%. Forging process includes individual procedures of squeezing blank, feeding and tilting it. Individual squeezing procedures are realized by depth whose value is determined according to given relation. Method is performed in apparatus having strikers with working surface formed by several planes; holders of upper and lower strikers with inclined sliding faces relative to which inclined sliding faces of holders of lateral strikers are moved. Lateral strikers are coupled with holders of upper and lower strikers through eight guides with П-shaped cross section. Strikers have cross sections with working portions in the form of isosceles trapezium. Forming lock joint inner faces of П-shaped guides and embraced by them faces of holders of strikers are inclined by angle 0 - 170° relative to mounting plane of guide to striker holder.
EFFECT: improved efficiency and quality of forging, improved wear resistance of tools.
6 cl, 10 dwg, 1 ex, 3 tbl
FIELD: plastic working of metals, namely production of calibrated forgings with elongated axis from ingots and preliminarily deformed billets in presses of four-striker forging apparatuses.
SUBSTANCE: apparatus includes holders of upper, lower and lateral strikers. Method comprises steps of heating billet and performing rough and calibration forging by passes at feeding billet after each squeezing and tilting between passes; after rough forging of blank with cross section area F = (1.05 - 1.4)Fn where Fn - surface area of cross section of calibrated forging, placing rigid support or supports between holders of upper and lower strikers. Calibration forging operation is realized until closing holder of upper striker with rigid support or supports during one or several passes.
EFFECT: possibility for producing calibrated forged products of different cross section and different size in one set of strikers, enhanced efficiency of method due to absence of period for readjusting tool.
2 cl, 1 dwg, 1 ex, 1 tbl
FIELD: plastic working of metals, possibly forging ingots and billets of different steels and alloys in hydraulic forging presses.
SUBSTANCE: apparatus includes two holders of upper and lower strikers with inclined surfaces and two holders of lateral strikers kinematically coupled with first two holders. Holders of lateral strikers have inclined surfaces corresponding to inclined surfaces of holders of upper and lower strikers. Holders of lateral strikers are mounted on lateral surfaces of holders of upper and lower strikers with use of eight П-shaped cross section guides. Strikers are mounted in holders. Two guides of holders of upper and lower strikers are secured to holder of lower striker symmetrically at both sides. Said guides have П-shaped cross section, they embrace apparatus at lateral and front sides and have movable contact with guides of holders of lateral strikers. Guides of holders of upper and lower strikers have windows in lateral sides in front of holders of lateral strikers for passing holders at opening apparatus.
EFFECT: improved design of apparatus.
2 cl, 8 dwg
SUBSTANCE: facility contains holders of top and bottom heads and two holders of side heads. To holders there are affixed corresponding heads. Heads, fixed to holders, located in one of two mutually perpendicular planes, allows two operating sections. These sections are located from the each side of facility plane of symmetry. Heads, fixed to holders, located in the different plane, allows one operating section each. Current operating section can be located between mentioned two operating sections. In facility there is at least one system for movement at least one head relative to its holder. System contains hydraulic actuator with rod or plunger and control system, hydraulic actuator and facility position measuring of head relative to its holder. Head is connected to rod or plunger of hydraulic actuator with ability of fixed movement relative to corresponding holder in vertical or horizontal symmetry plane of facility. Hydraulic actuators are located in bodies of corresponding holders of heads. In pipelines of operating fluid supply to hydraulic actuators there are built in back pressure valves.
EFFECT: laboriousness reduction of facility repurposing for different dimension type.
10 cl, 12 dwg
FIELD: process engineering.
SUBSTANCE: invention relates to metal forming and can be used in production of downhole rod pump cylinders. Pipe semis are produced by hot forging at fixed forging mandrel with conical working surface. Locating shank is used for fixing forging mandrel in channel of as-forged part. After channel boring cold radial forging with channel surface broaching is carried out with the help of extra mandrel. Hot and cold forging are performed by hammers at radial forging machine. After every reduction in said hot and cold processes hollow billet and half-blank are fed and edged. Liquid process lubricant is fed in billet deformation area, forged part centering area and broaching area. Feed is performed via radial channels in forging mandrel and centering shank. Start of edging is set to hollow billet and pipe half-blank angle not earlier that the feed start.
EFFECT: accurate sizes, higher surface quality, reliable operation of the machine.
10 cl, 2 dwg
FIELD: technological processes.
SUBSTANCE: technological line of radial forging contains a forging block, a heating device placed on both sides of it along the forging line live rollers and an additional heating device. The latter is in the form of a pusher furnace located along the forging line on the opposite side of the forging block relative to the heating device. There is an additional roller between the live rollers. An additional roller has the ability to connect the live rollers to ensure the movement of workpieces from one roller to another and disconnection. Thrusts are provided which can be mounted on the live rollers line in a position which stops the workpiece in front of the forging unit and in a position which transmits the workpiece from one live roller to another via an additional roller.
EFFECT: expansion of technological possibilities and increase of productivity of a technological line of radial forging.
3 cl, 4 dwg, 1 ex