SU1581601A1 - Hydraulic press - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular the design of presses. The purpose of the invention is to reduce the metal content. The press comprises a fixed frame and a movable frame composed of two cross-beams connected with C-shaped plates. The design of the clamping device for connecting C-shaped plates with crossbars has been improved. The plates are made with protrusions that are covered by U-shaped plates. A wedge is installed between the side surfaces of the U-shaped grooves of the plates and the protrusions of the plates. In addition, the ends of the plates are additionally fastened to the plates. Tk of the crossbar columns of the press can be as close as possible to the packages of C-shaped plates, the masses of all the crossbars decrease. 2 hp f-ly, 3 ill.

Description

The invention relates to the processing of metals by pressure and may find application in the construction of presses for the stamping of parts from various metals and alloys.

The purpose of the invention is to reduce metal consumption by bringing the guide columns closer together by changing the design of the movable press frame.

Figure 1 shows the press, a general view; figure 2 - section aa in figure 1; on fig.Z - section bb in figure 1.

The upper stationary crossbar 1 of the press is fastened with columns 2 with a table 3 and the lower stationary crossbar 4 installed on the foundation (not indicated). On the table 3, the lower part 5 of the stamp is installed. The upper part 6 of the stamp is attached below to the upper movable crossbar 7, mounted for movement along the columns 2 between the upper fixed crossbar 1 and the table 3.

Between the crossbars 1 and 7 are placed the upper working cylinders 8. In the axial bore of the crossbar 7 is placed an internal T-shaped slider 9 connected to a horizontal beam 10, which contacts the plungers of the upper working cylinders 8 and is connected to the plungers of the upper return cylinders 11 installed on crossbar 1.

Under the table 3 there is a lower movable crossbar 12, fastened to the upper movable crossbar 7 by four packs of 13 C-shaped plates 14. Each two opposite packs 13 are pressed against one of the prostitial 15 of the upper movable crossmember

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7 and to one of the spacers 16 of the lower movable cross member 12.

The movable cross-pieces 7 and 12 are drawn to the supporting surfaces of the plates 14 by means of wedges 17 pressed between spacers 15 and 16 and the plates 14. The upper and lower movable cross-pieces together with the packs of matching plates and the parts connecting them form a movable press frame.

Between the table 3 and the lower movable cross-section 12, the lower working cylinders 18 are placed. On the lower fixed crossbar 4 are installed balancing cylinders 19, return cylinders 20 and lower leveling cylinders 21. The upper equalizing cylinders 22 are fixed on the upper fixed crossbar 1.

The protrusions 23 at the ends of the C-shaped plates 14 are seized from the ends of the U-shaped plates 24. A wedge 25 is pressed in between the plates 24 and the protrusions 23 of the plates 14. The ends of the 26 plates 24 are fastened with the corresponding plates 14 using axes 27, bolts 28 and nuts 29.

The press works as follows. A billet 30 is placed on the lower part of the die 5. A hydraulic actuator (not shown) supplies the working fluid to the cylinders 8 and 18. The return cylinders 11 and 20 are connected to the drain.

I The plungers of cylinders 8 push down the horizontal beam 10 of the inner slide 9 until it stops at the upper movable crossmember 7 and then down, together with the crossbar 7, to the workpiece 30 by the upper half of the die 6. With this force the force of the impact on the crossbar 7 packs 13 C-plates 14, extendable by lower working cylinders 18 through lower movable cross-member 12.

When stretched, C-shaped plates 14 tend to unbend, their ends 23 tend to move away from spacers 15 and 16. U-shaped plates 24 and a wedge 25 prevent this. In turn, U-shaped plates 24 tend to unbend axis 27, bol

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You are 28 and the nuts 29 fastening the ends of the 26 plates 24 with the corresponding plates 14.

The U-shaped plates 24 do not protrude over the envelope in terms of the packages 13, which makes it possible to place columns 2 arbitrarily close to the packages 13. As a result of this approach, the Mads of all crossbars and the intensity of the press as a whole are reduced.

The economic effect of using the invention is provided by reducing the metal intensity of the press and saving the cost of its manufacture.

Claims (3)

1.Hydraulic press containing fixedly fixed lower crossmember and table, rigidly interconnected columns, a movable frame in the form of upper and lower crossbars, connected with C-shaped plate packages connected by stitches through intermediate spacers, as well as lower working cylinders mounted between a table and a lower frame crossbar, characterized in that, in order to reduce metal consumption, it is provided with an upper fixed crossbar connected by columns with a fixed lower crossbar and a table, upper working cylinders, mounted between the upper fixed cross member and the upper cross member of the frame, C-shaped plates are made with protrusions, and stitches are made in the form of U-shaped plates, covering with U-shaped grooves the projections of C-shaped plates, and wedges installed between the side surfaces of the grooves and protrusions of C-shaped plates, the U-shaped plates being additionally fastened with their ends with C-shaped plates. 2.Press pop.1, which is different from the fact that the connection of U-shaped plates with C-shaped plates is made with tension. 3. Press pop. 1, characterized in that the U-shaped plates are made of a prestressed structure. 1 ЗПф М 01 ЈZ 6L one 29 I Editor I. Casard Compiled by A.Ezzhev Tehred M. Khodaich Proofreader T. Malets Order 2060 Circulation 521 VNIIGTI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab., 4/5 Fig.Z Subscription