A method of manufacturing core products with a flange on the end and a clamp at the middle part and the device for its implementation

 

(57) Abstract:

Usage: when processing metals by pressure, namely punching rod products with bulges on the universal forging or die-stamping equipment. The inventive heated to forging temperature, the workpiece is placed in the lower volumetric having a through stream with cavities under the collar and flange. The force of the press through the main wedges provide grip on the area between the collar and the flange. In clamping stream block volumetric their counter movement to produce a landing flange on the end face of the workpiece. Simultaneously, at the other end of the workpiece exposed flat sedimentary punch mounted in pultusku. Polushka moves on the bottom plate of the impact of the additional wedge mounted on the top plate. The angle of the additional wedge more angle of main wedges. In the sedimentary punch and block volumetric make a different move. Due to the difference of the displacements is the clearance of the clamp in the middle part of the rod blank by extrusion punch the workpiece material into the cavity made in the block volumetric. 2 C. p. F.-ly, 4 Il.

The invention relates the s and devices for implementations of these methods, and can be used in the manufacture of blanks core products with a flange on the end and a clamp at the middle part on the universal forging or die-stamping equipment in forging shops of machine-building enterprises in the conditions of small-scale or mass production.

A device for bilateral landing thickening on rod blanks containing the upper movable and lower fixed plates, two block volumetric posted with the possibility of a counter move symmetrically relative to the axis of the pressure device and having a paste, forming the stream, installed in individual buildings and related plates articulated lever systems, and coaxially mounted punches, each punch is made in two halves, each of which is placed on the corresponding block of volumetric, and the working surface of the punch to form the end sections of the stream.

Under the influence of the efforts of the press blocks volumetric clamp the workpiece and moved to the center of the device. Rigidly fixed in blocks of volumetric punches are moved to the center of the device and produce a landing heads on the ends of the workpiece.

A disadvantage given the treatment of pimples only on parts of the product.

The known method of landing on rod blanks two thickenings in stamps with sliding matrices on horizontal forging machine.

For the landing of the two bulges on the terminal used moving matrix. The rear part of the block-matrices clamp the workpiece on the length ltag. In the front parts of these blocks are placed sliding poloski with cavities matrices and additional clamping stream on a plot of ltag'. Thus, the workpiece is sandwiched on both sides of the section l1subject to the landing. When you punch on poloski moving parts of the matrix are moved to a predetermined value, when this occurs, the deformation at the site of the workpiece l1. Simultaneously with the landing collar in sliding matrices, one flange on the end face of the workpiece. The process is carried out with a stationary clamping the matrix, which is clamped in an open area of the workpiece, the movement of the punch produces a landing flange on the end face of the workpiece and impinging on a moving matrix, which in turn produce the landing collar in the middle of the workpiece.

The disadvantage of this method is that it has limited features, as it can be carried out on the horizon is manufactured in a known manner, because the length of the block-matrices GCF insufficient to accommodate long workpieces.

The closest technical solution of the invention, taken as a prototype, is a method of manufacturing core products with thickenings at the end and in the middle part and device for its realization, which is that the cold end of the workpiece clamped in a matrix of horizontal forging machines. Punch with the working cavity exposed on the end face of the heated end. As the plot in the Central zone of the workpiece is heated to a higher temperature than the area of the end zone, the deformation of this zone is faster than the limit. Planting is carried out in the stream matrix, the cross-sectional area of the stream under the core part of the product which exceeds the cross-sectional area of the workpiece.

The disadvantage of this method and device is that its implementation requires additional equipment, special heating device that provides zone heating billets with different temperatures deformable sections.

The technical result obtained by the use of the invention is to reduce truetarget blanks in stamps with detachable sliding matrices.

The technical result is achieved in that the method includes heating the workpiece, the landing flange on its end face and the collar on the rod portion by extruding the sediment plug in the cavity, is made in block volumetric, according to the invention the landing flange perform counter engine blocks volumetric, and a landing collar due to the difference of the displacements in one direction block volumetric and sedimentary punch acting on the end face of the workpiece opposite the end on which land the flange.

The technical result is achieved in that the device containing the clamping block volumetric and punch, the axis of which coincides with the Central axis of the device, provided with the upper plate with wedges, bottom plate with poloskami and molding block volumetric, one of the wedges installed with the ability to interact with poloskei with a punch, and the remaining wedges are interoperable with the corresponding poloskami where polimetrica respective blocks, at the same time to ensure the rapid movement of poloski with the punch relative to the block bolometric the angle of the wedge is greater angle ostalim on the end and a clamp at the middle part; in Fig.2 the device is in the open position, General view; Fig.3 the device is in the final stage of the process of landing, longitudinal section; Fig.4 the lower half of the device, top view.

A method of manufacturing core products with a flange on the end and a clamp at the middle part is carried out with the help of the device with the top plate 1 with wedges 2 and 3 made integral with the upper plate 1 with the tilt angle . On the wedges 2 and 3 are mounted sliding of the strap 4 with inclined surfaces 5, which are rolled back to its original position and hang in the outdoor stamp cover porzucek 6 and 7, with the trunnions 8. In the cover of poloski 6 mounted on the upper section of the clamping block volumetric 9, and the cover poloski 7 of the upper section of the molding block volumetric 10. On the upper plate 1 is mounted an additional wedge 11 with an angle of inclination . The angle more angle . The lower part of the device includes a plate 12 with the guiding plates 13 which move poloski 14 and 15 blocks volumetric 16 and 17. Between poloskami 14 and 15 are forcing the spring 18. On the bottom plate 12 is mounted additional Polushka 19, in which is mounted a sediment plug 20, the axis of which coincides with the Central axis of the device. Polushka 19 ustanovi.

The landing flange on the end and clamp in the middle part of core products is carried out as follows.

Billet, heated to forging temperature, is placed in end-to-end stream bottom section of the clamping block volumetric 16. When the movement of the press beam (not shown) downward closed bottom 16 and the top 9 of the section of the clamping block volumetric, and the bottom 17 and the top 10 section of the molding block volumetric. Upon further lowering of the bar, the press force of the press is transmitted through the main wedges 2 and 3 of poloski 14 and 15 and the cover 6 and 7. Blocks volumetric 9 and 16, 10 and 17 provide grip on the section ltagand closing of the molding cavity. Poloski 14 and 15 blocks volumetric 9 and 16, 10 and 17 are moved towards each other by brackets 13, located on the bottom plate 12. Street blocks volumetric 9 and 16, 10 and 17 is the landing flange on the end face of the workpiece. Simultaneously, through the additional wedge 11, the press force is transmitted to pultusku 19, in which is mounted a sediment plug 20. The punch 20 poloskei 19 in the grooves 21 runs behind clamping block volumetric 9 and 16 at a speed exceeding the speed of movement of the block volumetric 9 and 16, and affects other tortall billet is extruded by the punch 20 in the cavity to clamp, located in end-to-end stream clamping block volumetric 9 and 16. In the process of deformation of the blocks volumetric 9 and 16, 10 and 17 make a movement l1and sedimentary plug 20 does move l2. Due to the difference of the displacements of the sedimentary punch 20 and block volumetric 9 and 16 l2-l1is the deformation area of the workpiece LSt', the metal billet is extruded into the cavity of the clamping block volumetric 9 and 16, there is a clearance pile in the middle part of the rod blank. After the operation of the landing collar and flange yoke press rises, poloski 14 and 15 under the action of springs 18 disposed in the initial position, Polushka 19 is given to the original position by the springs 22. Cover porzucek 6 and 7 under its own weight on inclined surfaces 5 sliding slats 4 are starting position and hang on the pins 8.

P R I m m e R. Made preparation for further forging hydraulic press having a rod portion with a diameter of 115 mm, a flange on the end with a diameter of 165 mm, a length of 100 mm and a clamp at the middle part with a diameter of 165 mm, length 50 mm, the Distance between the flange and the collar 410 mm with a total length of 950 mm, this purpose was taken round the car with a diameter of 115 mm, a length 1110 mm Before stamp perform a counter move landing of volumetric, average of 53 mm. Simultaneously, landing a punch under the influence of the wedge is moved by the value of 113 mm, the Metal billet is extruded into the cavity to clamp and flange forming a profile with the specified parameters.

A method of manufacturing core products with a flange on the end and a clamp at the middle part and the device for its implementation allow to reduce the complexity of manufacturing by providing unijunction landing, to significantly expand the technological capabilities of stamps with sliding split matrices with a drive from the main wedges that allows without significant capital costs for the purchase of special equipment to produce hydraulic presses the workpiece for subsequent stamping and forging type rod with two bulges.

1. A method of manufacturing core products with a flange on the end and a clamp at the middle part, comprising heating the workpiece, the landing flange on its end face and the collar on the rod portion by extruding sedimentary punch the workpiece material into the cavity made in the block volumetric, characterized in that the landing flange carried out a counter-movement blocks volumetric, and a landing collar by lodowki, the opposite end face, on which are planted flange.

2. Device for the manufacture of core products with a flange on the end and a clamp at the middle part, containing the clamping block volumetric and punch, the axis of which coincides with the Central axis of the device, characterized in that it is provided with a top plate with wedges, bottom plate with poloskami and molding block volumetric, one of the wedges installed with the ability to interact with poloskei, in which is located the plug, and the remaining wedges installed with the possibility of interaction with relevant poloskami where polimetrica respective blocks, at the same time to ensure the rapid movement of poloski with the punch relative to the block bolometric the angle of the wedge is greater angle of inclination of the remaining wedges of the upper plate.

 

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