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 [1].

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.

 

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