The way of deformation of the workpiece
(57) Abstract:The invention relates to a hot body stamping parts like flanges, disks, etc., the Technical result of the invention is to increase tool life, improve the quality of stamping parts. The preheated billet is deformed between approaching a matrix and punch, which makes complex oscillatory motion with simultaneous influence of axial forces precipitation, while between the punch and deformable workpiece is placed a gasket. 1 Il. The invention relates to the field of hot die forging parts like flanges, disks, etc.There is a method of deforming billet end rollers, whereby the cylindrical billet is deformed by the impact tool (punch), to make circular rocking and translational movement, see , for example, Saprykin I. A. and other Warm extrusion and Spirodela stamping parts electrical equipment. Forging and stamping production, 1983, N 9, p.12-14.The disadvantage of this method is the rapid failure of the punch in contact with the workpiece preheated to a temperature of go efforts and giving it at the same time complex oscillatory motion (see SU 499931, IPC721 J 5/06, 23.03.1976).In the technical literature, these methods currently described as ways sparodically stamping.In addition, the implementation of the physical deformation of the workpiece between the two approaching a matrix and punch has no value attached to complex oscillatory movement of the workpiece and the matrix, or punch.The closest analogue to the invention is a method of deforming billet end rollers, comprising preheating the workpiece deformation between approaching a matrix and punch, which makes complex oscillatory motion with simultaneous impact of efforts precipitation (see EN 2018398 C1, 21 D 7/12, 30.08.1994).The technical result of the invention is to increase die life.To achieve a technical result in the known method the deformation of the workpiece end rollers, comprising preheating the workpiece deformation between approaching a matrix and punch, according to the invention between a punch and a deformable workpiece placed the gasket.The drawing shows a diagram of the deformation Zagora 3. The punch does in the stamping process more complex oscillatory motion with the simultaneous effect of axial forces on the workpiece 1. Between the punch 2 and the workpiece 1 is placed a metal strip 4, which protects the plug from heat exposure of the workpiece.The proposed method for the deformation of the workpieces can find application in mechanical engineering in hot bulk forming disks, flanges and other parts, at least one end surface which is a smooth plane. The way of deformation of the workpiece end rollers, comprising preheating the workpiece deformation between approaching a matrix and punch, which makes complex oscillatory motion with simultaneous influence of axial forces precipitation, characterized in that between the punch and deformable workpiece is placed a gasket.
FIELD: plastic working of metals, possibly manufacture of parts such as flanged tubes.
SUBSTANCE: method comprises steps of end expanding of hot part at deformation temperature less than that of forging and simultaneously expanding diameter of under-flange portion of tube blank and shaping flange in rotating annular die by means of inclined punch fed along axis of tube blank. Process of end rolling out is realized for producing parts having flange thickness less than that of wall of tube blank and under-flange portion of tube blank in the form of truncated cone or cylinder with diameter exceeding by 1.2 - 1.05 diameter of tube blank. Punch is fed by inclination angle 4 - 6° relative to axis of tube blank.
EFFECT: improved quality of parts.
SUBSTANCE: method of press forming with rolling includes placement of stock in matrix set on die plate and rolling of stock with rolling press connected to drive which transfers oscillatory movement to rolling press when it is pressed to stock with force. The rolling press is equipped with a gear sector, and the die plate is equipped with a gear rack. When the stock is rolled with the rolling press, gears of the gear sector are in constant mesh with gears of the gear rack to facilitate rolling conditions. The device for die forming with rolling contains the rolling press and the matrix, installed on the die plate for stock placement thereon. The drive of the device connected to the rolling press facilitates pressing of the rolling press to the stock with force, the drive also transfers oscillating movement to the rolling press for rolling the stock with a working surface of the rolling press. The rolling press is equipped with the gear sector, and the die plate is equipped with a gear rack corresponding to the gear sector. The gears of the gear sector are designed to mesh with the gears of the gear rack.
EFFECT: there is facilitated reduction of maximum force of die forming and of speed of rolling.
10 cl, 9 dwg
SUBSTANCE: device includes first selvage motion roller for formation of biflex elements on both straight edges of metal strip, cutting rollers, implemented with ability of cutting of extracted from first selvage motion rollers metallic strip lengthway for two strips along the straight or wave-like lines. Additionally mentioned rollers are able to alternation of angle of horizontal rotation. It is also plate-flanging facility for connection of single curved element with biflex element with curling of cut metal strip in the form of spiral. On both straight edges of metallic strip there are formed biflex elements. Metallic strip is cut lengthwise for two strips by wave-like or straight lines by means of cutting rollers. It is formed single curved element on wave-like edge and it is connected to biflex element with curling of cut metal strip. It is also possible continuous cutting of metal strip by straight and wave-like lines lengthwise. For cutting of strip by straight line cutting rollers are located parallel to metal strip on the section of metal strip input and on the section of metal strip end. Cut metal strip is curled with integration of linear connecting boxes with both ends of curvilinear box. Additionally for cutting of strip by straight and wave-like lines there are alternated angles of horizontal rotation.
EFFECT: there are extended manufacturing capabilities, there are increase accuracy and reliability of connection.
7 cl, 17 dwg
FIELD: process engineering.
SUBSTANCE: inventions relate to metal forming and can be used in forging with burnishing. Billet is arranged between two rolls, each having shaped working surface corresponding to that of finished part. Billet is burnished by rolls swinging in opposite directions with the help of drive. Note here that rolls are pressed to billet with burnishing force. Burnishing is performed in turns in lateral directions relative to billet lengthwise axis. Proposed device comprises frame, top and bottom rolls having toothed sectors, two drive hydraulic cylinders and two rotary hydraulic cylinders. Drive hydraulic cylinders have hinged levers that make four-link mechanism to lift and down top roll and impart burnishing force to it. Rotary hydraulic cylinder rods are articulated with rocker to transfer angular momentum and burnishing force to bottom roll. Wedge mechanism is arranged to lift and down bottom roll and to transfer burnishing force to it. Top roll is turned because its toothed sector engages with bottom roll toothed sector, bottom roll displacing toothed rack with billet.
EFFECT: higher quality of forged parts.
10 cl, 12 dwg