RU1810211C - Mechanical press - Google Patents

Abstract

Usage: in forging and mechanical engineering. SUBSTANCE: press contains a frame 1, in the guides 2 of which a slider 3 is mounted, connected with a crank shaft (KB) 4. A carrier (B) 13 with grooves at the ends is rigidly mounted on the console KB 4. Stones mounted on the fingers of the flywheel (M) 17 are placed in the grooves with the possibility of movement. When the slider 3 is in the upper position, the supports KB4 and M17 take up the load only from the masses of the parts. In the lower position at the time of the technological operation, KB4 and B13 move due to deformation of KB4 and the gaps in its supports. In this case, the load from the technological force is not transferred to the flywheel supports, since the axis of the grooves B13 at this moment coincides with the direction of the load. 4 ill.

Description

Fi 5.7

The invention relates to forging and mechanical engineering, in particular to mechanical presses with a breaking rod design.

The aim of the invention is to increase durability by reducing the load on the bearings of the crank shaft and the flywheel support.

Figure 1 shows a kinematic diagram of a mechanical press; fmg.2 schematically shows a breaking connecting rod with a drive; in Fig.3 is a view along arrow A in Fig.1; figure 4 is a section bB in Fig.Z.

The mechanical press comprises a frame 1, in the guides 2 of which there is a slider 3 connected to the crank shaft 4 by means of a broken rod 5 consisting of upper 6 and lower 7 rings, a power cylinder 8 with a piston 9 and a rod 10. Crank shaft A it is mounted on the supports 11 of the hub 12 of the bed 1. On the console of the crank shaft A, a carrier 13 is installed rigidly (on the splines), having ends at the ends of the grooves 14. In the grooves 14, stones 15 mounted on the fingers 16 mounted in the bores of the flywheel 17 are placed with the possibility of movement. Flywheel 17 is installed in turn a support 18 mounted on the hub of the frame 1. The axes of the fingers 16 are located on the rotation axis of the crank shaft A by a distance equal to the eccentricity of the latter. The flywheel 17 is connected to the electric motor 20 by means of belts 19. The housing of the power cylinder 8 is pivotally mounted on the bed 1. and the rod 10 is connected to the hinge connecting the elbows 7 of the connecting rod 5.

The press works as follows,

In contrast to the electric motor 20, through the belts 19, the flywheel 17, the fingers 16, the stones 15 and the carrier 13, it is transmitted to the crank shaft 4. The latter, rotating in the bearings 11, acts with its eccentricity on the upper 6 and lower 7 of the crank arm 5, They are in at this moment the rocking movement is carried out. The slider 3 is in this upper position and is held by balancers (not shown in the drawing). In the upper position of the eccentricity of the crank shaft 4, a signal is supplied by means of a command device to supply energy to the piston cavity of the power cylinder 8. By the action of the energy to the piston 9 with the rod 10, both bends 6 and 7 of the connecting rod 5 are straightened. Thereafter

together with the rotation of the crank shaft 4 performs a reciprocating movement of the slider 3, performing a technological operation. With the movement of the slider

there is a movement of the moving elements of the balancers. At this moment, when the slider 3 occupies a position at the top dead center or any intermediate position, the crank supports 11

the shaft and support 18 of the flywheel 17 perceive the load only from the masses of parts that take part in the movement. At the moment when the slider 3 is at or near the bottom dead center and performs a technological operation, the crank shaft 4 and carrier 13 are moved due to the deformation of the crank shaft and the clearances in its bearings 11. The load from the technological force is not transferred to

the support 18 of the flywheel 17, since the axis of the grooves 14 drove 13 at this moment coincides with the direction of action of the load.

. Thanks to the introduction of such an innovation, reliability and

durability of the press at work.

Claims (1)

SUMMARY OF THE INVENTION A mechanical press comprising a slider located in the guide rails and connected to cheers with hangers, connected to the drive crank shaft by means of a broken connecting rod, consisting of upper and lower knees pivotally connected to each other, connected to a piston-type power cylinder, a flywheel located on the crank shaft and means for communicating the flywheel with the crank shaft, characterized in that, in order to increase durability by reducing the load on the crank supports the shaft and the flywheel, the flywheel is mounted on the crank shaft with the possibility of relative rotation, and the said communication means are made in the form of a carrier rigidly fixed to the console of the crank shaft and made with grooves, and placed in these grooves with the ability to move stones mounted on fingers mounted in the flywheel, while the axis of the fingers are located from the axis of rotation of the crank shaft at a distance equal to the eccentricity of the latter, the housing of the power cylinder is pivotally mounted on the bed, and the rod its piston is connected to a hinge connecting the connecting rod elbows. Fmg. 2 Fig.Z View 5-5 FIG. 4