The method of forging metallic blanks on the crimp of the forging machine, hydraulic clamp forging machine for its implementation and pumping plant for forging hydraulic swaging machine

 

(57) Abstract:

The inventive method of forging billets provides two modes. Mode roughing forging is conducted with a long-stroke Boykov at low frequency moves. In the mode of finishing forging is conducted with a short stroke of the heads when the frequency of moves. Hydraulic forging machine for implementing the method includes mechanisms for adjusting the stroke of the heads. Each mechanism is in the form of a pump with variable volume working chamber. The means for regulating the volume of the working chamber contains at least one additional plunger, which in one extreme position is located in the working chamber and connected with the main plunger. In another embodiment, the means for regulating the volume of the working chamber is made in the form of additional cameras with the plunger. Secondary camera is located coaxially with the working chamber. Additional plunger placed in the chamber and is inextricably linked with the main plunger. 3 S. and 3 C.p. f-crystals, 3 ill.

The invention relates to the processing of metals by pressure and can be used for crimping the metal of the workpieces on the hydraulic radial forging machines.

Investmoscow at low frequency passages, and on the other with a short stroke of the heads when the frequency moves [1]

Known hydraulic clamp forging machine containing the drive motor and jaunty installed on the moving parts of the power cylinder and associated with the appropriate mechanisms to adjust the size of their progress [2]

Known pump unit for a hydraulic crimping machine, containing a working camera placed in her main plunger associated directly with the chamber of the power cylinder forging machines, on the movable part of which is fixed firing pin [3]

The disadvantage of this method is to use each mode forging hydraulic forging machines of two types corresponding to each mode characteristics. Machines with long stroke Boykov do a small amount of shock Boykov per minute, whereas cars with short stroke produced a significantly higher number of beats per minute. When this hydraulic forging machines contain a pump unit with a constant supply and their impact frequency Boykov unchanged. Blow frequency changes slightly when the number of revolutions of the pump, but it is insufficient to support a wide range of frequent changes is n two types, the characteristics of each of which correspond to only a particular mode of forging, the inability to use one of the forging machine for rough and finish machining of workpieces, as well as the lack of differentiation of the volume of the working chamber known pump installation, reduces economic indicators as a technology of forging process and hydraulic forging machines in General, and the pump unit in particular.

The technical result of the invention is to improve the economic performance of the method and equipment for its use, and to increase their technological and operational capabilities.

This is achieved in that in the method of forging metallic blanks on the crimp of the forging machine, including strain strikers in two modes forging, one of which compression is performed with long-stroke Boykov at low frequency of moves, and on the other with a short stroke of the heads when the frequency of moves, according to the invention a long course of strikers at low frequency of moves used in mode roughing blanks, and short stroke Boykov when the frequency of moves used in mode shestovikov mode roughing in a fourfold value.

The technical result is also achieved by the fact that in forging hydraulic swaging machine containing the drive motor and jaunty installed on the moving parts of the power cylinder and associated with the appropriate mechanisms to adjust the size of their progress, according to the invention the control mechanism of stroke Boykov made in the form of pumps with variable volume working chambers, and the drive motor is arranged to work in double-speed mode.

The technical result is also achieved by the fact that the pump unit hydraulic crimping forging machines, containing working chamber placed in her main plunger associated directly with the chamber of the power cylinder forging machines, on the movable part of which is secured the die according to the invention provided with a means at least two-stage regulation of the volume of the working chamber.

The means for regulating the volume of the working chamber may be in the form of at least one additional plunger having two extreme positions, mounted with possibility of accommodation in one of its extreme positions in the working chamber and interact with the main plunger.

In Fig.1 shows a pump with variable volume working chamber; Fig.2-3 is the same, in different versions.

Hydraulic clamp forging machine includes a pump 1 with the working chamber 2 in which is placed the main plunger 3, which is driven from a drive motor 4 by means of a crank mechanism 5.

The working chamber 2 is directly connected with the chamber of the power cylinder forging machines highway 6, and the drive motor 4 is arranged to work in double-speed mode.

To change the volume of the working chamber 2 of the pump 1 is provided by means of at least two-stage regulation of the volume of the working chamber made in the form, for example, an additional plunger 7 having two extreme positions. In one of the last provisions of the additional plunger 7 is placed in the working chamber 2 and is connected with the main plunger. The volume of the working chamber in this case is reduced to a value, which is located outside the volume of the working chamber, the value of which will be the maximum. The position of the additional plunger 7 controls the drive cylinder 8 connected to the main tank 9.

One use of the invention, shown in Fig.2, implies the presence of two or more plungers, each of which has the ability to interact with the main plunger 3.

Additional plungers can be independent and to be circumferentially or axially.

In Fig. 2 shows a variant of the axial location of additional plungers 7 and 10. Each additional plunger has a corresponding control unit position, including, for example, rack-and-pinion clutch 11 and the elastic element 12.

The means for regulating the volume of the working chamber can be performed (Fig. 3) in the form of at least one additional chamber 13, which is located coaxially with the main chamber 2 and independently of it. The main plunger 3 is located in the working chamber 2, and an additional plunger 7, is inextricably linked with the main plunger, the additional working chamber 13. Additional working chamber is connected with the power cylinder forging machines highway 14.

In the case of reducing the volume of the working chamber to a value corresponding to the mode finishing, additional plunger means controlling the volume of the working chamber works in the past along with the main plunger, reducing the volume of the working chamber by an amount corresponding to the amount of additional plunger. Depending on the need of multi-stage regulation of the volume of the working chamber in the latter can be consistently there are two or more plunger (Fig.2).

When espola to another is attaching or detaching one or both cameras to or from the highway, connecting the working chamber with the power cylinder forging machines.

During operation of the forging machine in the mode of finishing the frequency of moves of the heads is more than 4 times the frequency of moves Boykov mode roughing.

The combination of multi-stage regulation of the volume of the working chamber of the pump installation forging machines with the possibility of obtaining the desired speed on the axis of the crank shaft due to the two-speed operation of the engine allows the use of a single hydraulic forging machine for crimping workpieces in different processing modes.

1. The method of forging metallic blanks on the crimp of the forging machine, including strain strikers in two modes forging, one of which compression is performed with long-stroke Boykov at low frequency of moves, and the second with a short stroke of the heads when the frequency of moves, characterized in that a long course of strikers at low frequency of moves used in mode roughing blanks, and short stroke Boykov when the frequency of moves used in the mode of finishing of the workpiece.

2. The method according to p. 1, characterized in that the frequency of moves of the heads in the mode of finishing the ical clamp forging machine, containing the drive motor and jaunty installed on the moving parts of the power cylinder and associated with the appropriate mechanisms to adjust the size of their stroke, characterized in that the control mechanism of stroke Boykov made in the form of pumps with variable volume working chambers, and the drive motor is arranged to work in double-speed mode.

4. Pumping plant for forging hydraulic swaging machine, containing a working camera placed in her main plunger associated directly with the chamber of the power cylinder forging machines, on the movable part of which is fixed a head, characterized in that it is provided with means at least two-stage regulation of the volume of the working chamber.

5. Installation according to p. 4, characterized in that the means for regulating the working volume of the chamber made in the form of at least one additional plunger having two extreme positions, mounted with possibility of accommodation in one of its extreme positions in the working chamber and interact with the main plunger.

6. Installation according to p. 4, characterized in that the means for regulating the volume of the working chamber is made in the form of PCNA and independently from the main camera and placed in the additional plunger, is inextricably linked with the main plunger and located coaxially with him.

 

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1 tbl, 1 ex

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