Forming machine

FIELD: metallurgy.

SUBSTANCE: invention concerns metal deformation process field. Particularly it concerns forming machines and can be used while manufacturing of polyhedral products of closed form. Forming machine contains bed, cross bar, installed with ability of rotation and displacement on columns, drive, implemented in the form of cylinder, rod of which is connected with two levers, each of which is connected by means of link with column, puncheon, matrix, carriage with rollers, located parallel to cross bar with ability of displacement. Puncheon is implemented with rectangular cross-section, is pivotally installed with ability of rotation relative to work surface of bed and outfitted from both sides by axis interlocked to additional drivers.

EFFECT: improvement of large-size products and accuracy of bending angle is provided .

4 dwg

 

The invention relates to the field of metal forming, in particular for bending presses, and can find application in the manufacture of polyhedral products closed form.

Known for bending the mill, containing a bed, a table, rigidly associated with the rack, hydraulic cylinders, made in the form of two piston two-way hydraulic cylinder, a matrix, a punch mounted with the possibility of reciprocation (see IPC WV 1/32, the description of the invention to the patent of Russian Federation №2192964, publ. 20.11.2002,).

The disadvantages of the known devices are:

limited technological capabilities, due to the impossibility of making a closed loop;

- high energy costs, due to the presence of two piston driving hydraulic cylinder, requiring for each energy input necessary to complete the work.

Closest to the claimed technical solution is bending, containing a bed, a matrix, a punch mounted on the traverse with the possibility of reciprocating movement by means of two columns in the guide, the actuator is made in the form of a cylinder, the piston rod of which is pivotally connected to the two levers, each of which is connected by a shackle with the column, while the traverse is made chief is based on one of the columns (see IPC B21D, WV 1/32, the description of the invention to the patent of Russian Federation №2269391, publ. 10.02.2006,).

The disadvantages of the known devices are:

- low quality of finished products of large size, due to the formation of folds of the metal sheet under the weight of the workpiece with a large amount of processed sheet;

- low accuracy ensure that the angles of the bend in the manufacture of products multifaceted profile.

The technical result of the invention is to improve the quality of the manufacturing of large-sized products and the accuracy of the bending angles.

The essence of the technical solutions is that in the bending press, containing a frame, a spreader mounted to rotate and move in the columns, the actuator is made in the form of a cylinder, the piston rod of which is connected to the two levers, each of which is connected by a shackle with a column punch, matrix, carrier rollers, located parallel to the traverse can move, the punch is made with a rectangular cross section, pivotally mounted to rotate relative to the working surface of the bed and provided on both sides of the axes, kinematically associated with additional drives.

The execution of a punch with a rectangular cross section, pivotally mounted with a possibility of rotation about razocharovivali frame, provides the installation sheet large size strictly horizontally, i.e. without deformation and without the formation of kinks, which further improves the conditions of deformation of the sheet and, ultimately, the high quality of the finished product.

Supply of punches from both sides axes, kinematically associated with additional actuators, provides controlled rotation of the plug relative to the working surface of the bed and bending configured for a specific corner portion of a processed sheet during the formation of polyhedral profile, thus obtaining high-quality (without cracks) of the finished product and ensuring accuracy of the angular bend, which ultimately improves the quality of finished products.

The present invention is shown in the drawings, in which figure 1 shows a General view of the bending press; figure 2 - the same, when the rotation of the bar; Fig 3, 4 schema - flexible.

Press brake comprises a frame 1, punch 2, matrix 3, the yoke 4, the carriage 5 with the rollers 6 located and moving parallel to the cross beam 4, which is rotated about the axis 7 columns 8 and has the ability to move through the columns 8 and 9 in the guide rails 10 and 11. The actuator is made in the form of a cylinder 12, a rod 13 which is hinged to the levers 14, 15, each of which is connected with ear-rings 16 and 17 respectively with columns 8 and 9. Colo is ka 9 provided with a lock 18 for mounting of the swing beam. The carriage 5 with the rollers 6 are mounted on the rail 19 that is parallel to the traverse 4.

The punch 2 is made with a rectangular cross-section and by means of hinge 20 (Fig 3) installed with a possibility of rotation relative to the working surface 21 of the base 1. On both sides of the plug provided with the axes 22 and 23, on which gear wheels 24, 25 which engages with the toothed rails 26, 27. Additional drive is made in the form of cylinders 28, 29 (figure 2), the rods of which are connected with the racks 26, 27 and are located on both sides of the punch 2 on the frame 1. Matrix 3 is installed in the traverse 4 and its working surface 30 is made with an angle of inclination relative to the working surface 21 of the base 1.

Press brake operates as follows. The processed sheet 31 is placed on the working surface of the base 1 and the rotary plug 2, is used to supply the working fluid (liquid or air) in one of the cavities of the cylinder 12 (not shown) and the resulting force is transmitted to the shaft 13, acting on the levers 14, 15, which rotate around axes to transmit power through earrings 16 and 17 in columns 8, 9, the yoke 4 and the matrix 3, under which the processed sheet 31 is pressed against the working surface 21 of the base 1. After which is used to supply the working fluid (air) in one of the cavities of the cylinders 28, 29 and by PR the progressive education movement of the gear racks 26, 27 in the rotational movement of the gear wheels 24, 25 is the rotation of the punch 2, under which the processed sheet 31 is bent at a specified angle.

After that, the processed sheet is moved by a distance determined by the size of the finished product, bend to the next corner and get the following facet of the product. By repeating the above operation curve of the processed leaf 31 depending on the desired shape and size, get a finished product with a closed loop (see figure 3). For strong connections start and end forming the surface of the processed sheet 31, the carriage 5 with the roller 6 moves along a generatrix of the sheet 31, smoothes the surface and ensures that they fit to each other. After moving the carriage to return to its original position, release the yoke 4 from the latch 18 and take out the finished product.

The use of the invention will improve the quality of manufacturing large-size products by eliminating fracture and improve the accuracy of the bending angles.

Press brake, contains a frame, a spreader mounted to rotate and move in the columns, the actuator is made in the form of a cylinder, the piston rod of which is connected to the two levers, each of which is connected by a shackle with a column punch, matrix, carrier rollers, RA is put parallel to the traverse can move, characterized in that the punch is made with a rectangular cross section, pivotally mounted to rotate relative to the working surface of the bed and provided on both sides of the axes, kinematically associated with additional drives.



 

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FIELD: metallurgy.

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FIELD: plastic working of metals, in particular, sheet bending equipment.

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EFFECT: wider operational capabilities.

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EFFECT: extended technological capabilities.

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FIELD: metallurgy.

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FIELD: metallurgy.

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EFFECT: raised quality of bending.

15 cl, 15 dwg

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