SU1581843A1 - Three-coordinate hydraulic pulsed vibration press - Google Patents

Abstract

FIELD OF THE INVENTION The invention relates to mechanical engineering, in particular to the design of hydro-pulse vibro-impact presses. The purpose of the invention is to improve the quality of parts and operational capabilities by an independent vibration effect on the workpiece in three coordinates. The press contains a frame, a vibrating table with elements of elastic return, a movable yoke with cylinders for its movement, a working cylinder in communication with a source of pulse pressure, as well as a loading plate. New in the press is the presence of two additional cylinders. The cylinder axes are horizontal, mutually perpendicular, intersect on the axis of the main working cylinder of the corresponding spring return elements and sources of pulse pressure. There is also a load plate associated with a movable head plate using flexible elements. 5 il.

Description

The invention relates to mechanical engineering and can be used to create vibroimpact machines of hydro-pulse machines.

The purpose of the invention is to improve the quality of parts and expand operational capabilities by providing an independent vibration effect on the workpiece in three coordinates

Fig, 1 shows a hydro-pulse press, a general view; figure 2 - section A-A in figure 1; on fig.Z - section bb in figure 2; figure 4 is a view In fig 1; Fig. 5 is a schematic diagram of a ball joint seal.

The impulse vibropress contains a frame 1, bolted 2 on the foundation block 3, two cylinders 4 and 5 of movement of the movable cross member 6, each of which includes a housing 7 with an upper 8 and lower 9 cavities, a rod 10 and two bushings 11 and 12 fixed to the ends of the casing 7, two guides 13 and 14, in which the rolling pins 15 and 16 move; At the upper ends of the rods 10 and the cleavers 15 and 16 a movable yoke 6 is fixed, on which shock absorbers 17 are mounted. The bed consists of two plates: the upper 18 and the lower 19, and supporting columns 20. Cases 7 of cylinders 4 and 5 and directed 13 and 14 are installed as supporting columns of bed 1. With a movable cross beam 6, a flexible plate 21 is connected to a loading plate 22 with a punch 23 fixed on it and an inertial load 24. A pulsed source 25 is located on the bed 1.

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a pressure on which a spherical bearing 26 with a channel 27 is mounted, in which a ball head 28 with a through hole 29 is placed, a ball head 28 is mounted on the housing 30 of the main cylinder 31, which contains a plunger (FIG. 3) with a spherical end interacting with a shoe 33, mounted on a vibrating table 34. The vibrostol 34 is connected to the bed plate 18 and contains four identical spring return elements 35, each of which contains a cup 36, a sleeve 37, a spring 38 and tu 39 with two spherical baffles — the top 40 and lower 41, upper sub t The nick 40 is located in the shoe 42f mounted on the vibrating table 34, and the lower 41 is located in the shoe 43 mounted on the base 1, the interface 6a Schmack 33 and the base I are mutually perpendicular to two identical horizontal drives 44 and 45 (Fig 2). Each of them includes a spherical support 46 with a lid 47 (FIG. 3), a ball head 48 located therein mounted on the shoe, mounted on the rod 49 of the auxiliary cylinder 50 with a piston 51, a piston cavity 52 and an elastic return element made in the form of a spring

53. The cylinder 50 also contains a sleeve

54 mounted for movement between the rod 49 and the housing 35 and cooperating with the adjusting sleeve 56 screwed into the housing. A ball head 57 with a through hole 58, located in a spherical support 59 with a channel 60 and tucked by a cover 61, is fixed to the housing 55. The channel 60 is connected to a source of pulse pressure 62 mounted on the base 1, Sealing the conjugation of the ball head 28 and the spherical support 26 by means of a seal 63 (FIG. 5) installed in a cavity 64 formed by a clipped end 65 of a ball head 28 and a spherical support 27. Sealing of a ball head 57 and a spherical support 59 is similar. On Stage 1, stops 66 and 67 (Fig. 3) are fixed, limiting the vertical and horizontal movements of the vibrating table 34, respectively. On the vibrating table 34 installed the mold 68 with the workpiece 69 (Fig, 1). When moving the movable cross beam 6, the lower end of the rod 10 moves through sleeves 11 and 12

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in channel / 0 of foundation block 3,

Pulse vibropress works as follows,

Pressure is applied to the upper cavities 8 of the cylinders 4 and 5, and the lower cavities 9 are connected to the drain. In this case, the movable yoke 6 fixed on the rods 10 moves downward, the punch 23 enters the mold guide 68. The loading plate 22 ter em contacts the shock absorbers 17 and loads the flexible connections 21. The force developed by the cylinders 4 and 5 is transmitted to the workpiece 69,

From the source of pulse pressure 25 through the channel 27 through the opening 29 in the ball head 28, the working fluid enters the plunger cavity of the cylinder 31.

During the pressure pulse, the plunger 32, acting on the shoe 33, moves the vibrating table 34 upward and, through the pull 39, compresses the spring 38 of the spring return elements 35.

The presence of spherical supports: the upper 40 and lower 41, housed in the shoes 42 and 43, allows the vibrating table 34 to move freely in a horizontal plane.

When the pressure at the outlet of the source 25 decreases, the vibrating table 34 under the action of the force of the springs 38 moves downwards before impacting with the stops 66, ensuring the vibro-impact nature of loading the workpiece 69

If the vibrating table 34 does not have time to reach the stops 66 until the next pressure increase at the outlet of the source 25, then under the effect of the increased pressure, it again begins to move upwards. At the same time, the mode of vibration loading of the workpiece 69 is performed. The preload compression force of the springs 38 is adjusted screwing the glass 36 into the sleeve 37,

Each of the two additional cylinders 50, which move the vibration table 34 in the horizontal plane, is connected to a separate source of pulse pressure 62 and therefore operates independently. The actuators 44 and 45 of the cylinders 50 are made the same.

When a pressure pulse is applied to the piston cavity 52 from the source 62 through the channel 60 and the opening 58, the habitability

acts on the piston 51 and the rod 49 extends, moving the vibrating table 34. The vibrating mortar 34 reverses under the action of springs 53 after the pressure pulse in the cavity 52 ceases to act. Similarly to the operation of the main cylinder actuator 31, the additional cylinder 50 provides two loading modes - vibratory and vibro-impact (in case of contact with stops 67),

 Adjusting the force of the elastic return of the vibrating table 34 when moving in a horizontal plane is done by screwing the sleeve 56 into the body 55 of the additional cylinder 50, which, moving the sleeve 54, compresses the spring 53. The presence of ball joints of the vibrating table with drive cylinders and spring return elements ensures the free movement of the vibration table 34 ( both vertically and horizontally). The workpiece 69 is loaded in the vertical direction due to the inertial resistance of the crosshead 6 with the inertial load 24, the static force applied by the cylinders 4 and 5, the additional impact of the returning crosshead 6 and the reactive impulse upon impact

vibrotable 34 on stops 66, i

In the horizontal direction, the workpiece 69 is loaded due to its inertia in both forward and reverse vibration table 34

The proposed vibropress has a wide functionality, since it allows independent vibration loading of the workpiece in three mutually perpendicular directions. Each of the three drives can operate with a given amplitude, frequency, and pulse shape, which provides a spatial force effect on the particles of the material being processed. This makes it possible to increase the effectiveness of the effect of vibration on the material being processed, which is reflected in an increase in the density and equal density of parts pressed from powder materials, an improvement in the quality of filling the model molds for casting, a reduction in the processing time during the embossing of casting grids and the crushing of materials.

The economic effect of the implementation of the invention is achieved by improving the quality of parts and the process performance,

Claims (1)

Claim s Three-coordinate hydroimmune vibropress, containing bed in the form of upper and lower plates connected to each other by supporting columns, vibrating table connected to the bed by elements of elastic return with spherical end hinges, pulsed ribro drive a table in the form of a hydraulic cylinder with a head and a spherical oiopon, the working cavity of which through the CROSS of the ball head and the channels of the spherical bearing communicates with the source of pulse pressure, as well as the traverse with the cylinder of its movement, and that, in order to improve the quality of the machined parts and expand the operational capabilities by means of a non-coaxial vibration effect on these parts in three coordinates, it is equipped with two additional vibration table drives, each of which is made as hydro-pndra with podpuch ing ggm piston, communicated by its working integrity with a separate source of impurity pressure and its own end-end hinges on its rod and body respectively, with a vibration table and bed, as well as a loading plate and flexible elements, with the cylinder,:, additional drives mounted horizontally and mutually perpendicular so that their longitudinal axes intersect on the axis of the main drive cylinder, the load plate is connected to the movable cross-beam by means of flexible elements, and the displacement cylinder bodies A movable beam is installed between the upper and lower plates of the bed and is rigidly connected with them. vv I 2Лф /; & /////////// & Ј (// CV8I8 & 4 - ht i i C; Cjg Cm §3% f ts- Type B FiaM 5