Long radial forging machine
(57) Abstract:The inventive radial forging machine contains jaunty rigidly mounted on the slide wings. The radial actuator and the swinging movement of the heads is made in the form of a connecting rod and crank mechanism. The kinematic connection of the drive shaft of the drive swinging movement of the firing pin with the slide-scenes performed by the horizontal and vertical rods. The connecting rods pivotally connected two shoulders lever, the tilt axis which is fixed in the frame. 2 C.p. f-crystals, 4 Il. The invention relates to the processing of metals by pressure, namely, radial forging machines, mostly long.Known long radial forging machine (RCM), containing in addition to the actuator drive radial movement of the firing pin, the drive mechanism of its swinging movement. During this swinging movement of the striker reportedly due to the gearing formed of jagged stone, mounted on the wings, having a reciprocating movement, and a member with them engages the toothed gear. The latter can be rotated in the frame as mounted on a rotary drive shaft. Turning the shaft on some of the scenes and (see auth.St. USSR N 780332, B 21 J 7/14, 1979).Specified RCM has the disadvantage that the beginning and end of the swinging movement of the firing pin is determined by the beginning and end of its radial travel. Last restricts technological capabilities.Known long RRM containing the drive mechanism of the swinging movement of the firing pin, in which the drive crank shaft kinematically by means of a connecting rod is connected with a screw mechanism, acting through the spherical washers and springs on one of the shoulders of the slide-scenes with strikers (see ed.St. USSR N 671104, B 21 J 7/16, 1976).The obstacles to achieve the desired technical result when using this known device is that this device does not adjust the amount of swing angle of the slide with the hammer back. In comparison with the device according to ed.St. N 780332 device on the bus. St. N671104 has the advantage that the beginning and, consequently, the end value of the swing angle firing pin may be shifted in phase relative to its radial travel. However, it has the disadvantage that it does not adjust the value of the angle of swing. Swing angle in this type of machines determines the feed rate of workpiece per cycle (stroke) slave to the above, known RCM eliminated (see patent Austria N 276009, B 21 J 7/14, 1969). The machine has the adjustment of the angle of swing is brisk. Adjustment is carried out by means of the crank-rocker mechanism kinematically connecting the drive shaft with a screw drive mechanism swing slider-the-scenes with the striker. Adjustment takes place by rotation common to all the heads of the faceplate, to which is pivotally attached to the ends of the wings. Known RCM is the closest device to the same destination to the stated object by the combination of features of RCM long and contains for each firing pin rigidly mounted on the slide-the slide, articulated crank rod drive mechanisms radial and rocking his movement with the shaft parallel to the axis of the workpiece.The obstacles to achieve the desired technical result when using the known device, taken as a prototype, is that in the known device is overly complex design of the mechanism of regulation of the angle of swing is brisk. The drive control is carried out by means of the crank-rocker mechanism acting on the screw pair, through which the spherical washer and the spring acts on one and the, predopredelyaet high precision manufacturing elements of this circuit. The latter is associated with the requirement to provide synchronous operation of all strikers.The technical result is to provide adjustment of the angle of swing is brisk, the shift angle of the swing phase with respect to the radial course is brisk and to simplify the design of the actuators swing and adjust it.When implementing the tasks and the implementation of the invention, the technological capabilities of the machine, which is determined by such characteristics as the adjustment of the angle of swing shift and swing angle phase relative to the radial stroke of striker saved, but this significantly simplifies the design of the machine. Void rocker and the screw mechanism: complex mechanisms requiring high accuracy of manufacturing, availability of special machine equipment. In the result of the cancellation of these mechanisms reduces the length of the kinematic chain, increases the reliability of the machine.This technical result in the implementation of the invention is achieved in that in the known RRM containing for each firing pin rigidly mounted on the slide-the slide, hinge-crank mechanisms p is emotionsa connection of the drive shaft of the drive swinging movement of the firing pin with the slide-off stage, performed by the horizontal and vertical rods and pivotally connecting their two shoulders of the lever, the tilt axis which is fixed in the frame, with the vertical rod with two shoulders lever associated ball bearing.Lingering RCM, in which the vertical rod pivotally connected with a drive crank shaft through the eccentric sleeve and hub, connected between a splined connection, and with the shaft - beskonechnym.Lingering RCM, in which the slide-connecting rod and rocker stone is additionally pivotally connected axes located along the axis of the rocker stone.The drawing shows a diagram of the device, where Fig. 1 shows a General view of the machine of Fig. 2 - section a-a in Fig.1; Fig. 3 is a section along B-B in Fig. 2, and Fig. 4 - section b-b In Fig. 2.Information confirming the possibility of carrying out the invention is as follows.The RCM device.The following is a description of the device and one striker. The other three have the same device.Hammer(hammer) 1 machine rigidly attached to the slide-the slide 2 having a ball bearing 3 and rails 4 in the frame of the machine 5. The connecting rod 2 is pivotally connected with coloniae movement from the eccentric shaft 9, a circular rod 10 and table 11. The distance between the opposing strikers is regulated by turning the eccentric shaft 12, the influence of a circular rod 13 on the faceplate 11. The wings 2 at the same time are connected through the hinge axis 14, a horizontal rod 15, the two shoulders of the lever 16, the vertical rod 17 and the eccentric sleeve 18 and hub 19 of the eccentric shaft 9 (Fig. 4). Eccentric sleeve 18 and hub 19 are connected through a spline (cog) connection. Hub 19 is connected with the shaft 9 by means beskonechnogo connection 20. End washer 21 limit the axial displacement of the rod 17 and the sleeve 18. On the second end of the eccentric shaft 9 is rigidly fixed gear 22, which engages with the toothed wheel 23, which connects all the shafts 9 and the actuator (not shown) between them. Similarly kinematically by means of gears (not shown) connected to the shaft 12. The rod 17 pivotally connected with two shoulders lever 16 by means of a ball bearing 24.The principle of operation of the RCM.The rotation from the drive (not shown) is reported toothed wheels 23, the gears 22 and the eccentric shaft 9. The shaft 12 at this time is stationary. When the rotation shaft 9 of the circular is 11, rocker stone 6 and 2 scenes. When this washer 11, and with it the rocker stone 6 and the connecting rod 2 get a vertical passage-jaunty 1, closer and closer to the center (Fig. 1), affect inserted between them blank, deforming it.Simultaneously with this movement, the rotation of shaft 9, reported the hub 19, an eccentric mounted on a shaft 9 (l2), and from it through the sleeve 18 of the rod 17. The rod 17 through the ball bearing 24 rotates the two shoulders of the lever about the axis 25, mounted in the frame 5. As well as two shoulders of the lever 16 by a second shoulder, hinged to the connecting rod 15, simultaneously with this movement is communicated to the wings 2, pivotally connected with the connecting rod. The wings 2, and with it the firing pin 1, get swinging movement. When this center swing the scenes 2 is the center of the ball joint 3. Along the guides 7 of the connecting rod slides (Fig. 2).In that case, if you want to shift the beginning (end) of rocking motion relative to the radial (l1), remove the washer 21, free beskonechnoe connection 20 and rotate the hub 19 to the shaft 9 to the desired angle. Beskonechnoe connection clamp 20, the washer 21 is fixed in place. If you want to shift the beginning (end) of rocking motion, all Boykov immediately Affairs is a 1, then remove the washer 21, the sleeve 18 (Fig. 4) is removed from engagement with the hub 19 and rotate it relative to the eccentricity of the l2the shaft 9 to the required value. Aligning the eccentricities l4and l5above the horizontal axis will get the maximum swing angle. In the position as shown in Fig. 4 - swing angle is equal to zero.The sleeve 18 to enter into engagement with the hub 19, install a washer 21.For regulating the distance between the strikers 1, rotate the shaft 12 in the desired direction. When turning clockwise (Fig. 3) is the distance between the strikers 1 increases.Cycle RCM is determined by the rotation of the shaft 9. For one revolution of the shaft 9 and the firing pin 1 makes a full radial stroke and full swing angle. While acting on the workpiece 26, he pushes her forward. 1. Long radial forging machine, containing for each firing pin rigidly mounted on the slide-the slide, connecting rod and crank drive mechanisms radial and rocking his movement with the shaft located parallel to the axis of the workpiece, characterized in that the kinematic connection of the drive shaft of the drive swinging movement of the firing pin with the slide-wings made postero fixed in the frame, the vertical rod is connected with two shoulders lever ball bearing.2. Lingering RCM under item 1, characterized in that the vertical rod pivotally connected with a drive crank shaft through the eccentric sleeve and hub, connected between a shaft and a splined connection.3. Lingering RCM under item 1, characterized in that the slide-connecting rod and rocker stone is additionally pivotally connected along the axis of the rocker stone.
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