PL167697B1 - Upper anvil of a forging press - Google Patents

Abstract

The upper anvil of the forging press, characterized by the fact that it is attached to the rotary head (7) consisting of a holder (8) and an intermediate plate (5), loosely suspended on a rotary spindle (10) placed on a thrust bearing (11) in the seat ( 13) and finished with a thread with a nut (15) and securing (16) against unscrewing, while between the intermediate plate (5) and the handle (8) there is a lock (21) with a bolt (22) that fixes the relative position of both elements.

Description

The subject of the invention is the upper anvil of a hydraulic press used for free forging, especially elements extending beyond the dimensions of the anvil working surface.

Known upper anvils for forging presses are made in one piece and are rigidly attached to the anvil holder. The anvils are secured by means of four pins and centering lugs fixed in the press ram.

Forging forgings in the form of rings, sleeves or discs with a diameter exceeding the width of the anvil requires the rotation of these forgings on the plate or anvil during the upsetting or forging operations to the height dimension. The rotation of such forgings is performed by two workers who manually, with the use of special tools, simultaneously move the forgings, which in the case of large-mass forgings requires a lot of physical effort.

The aim of the invention is to solve the upper anvil that allows to increase the work efficiency and reduce the effort of workers.

The essence of the invention consists in fixing the upper anvil to the rotating head consisting of a holder and an intermediate plate suspended loosely on a spindle placed on a thrust bearing in the socket. The spindle ends with a thread with a nut secured against unscrewing. Between the intermediate plate and the handle there is a lock with a bolt that fixes the relative position of both elements.

It is advantageous to have projections with holes in the holder, in which the fixing pins are inserted and locked with transverse oblique wedges. It is also advantageous to screw to the bottom surface of the intermediate plate, the block that fits into the wedge groove of the anvil. Additionally, the intermediate plate has a spigot rotatable in the handle seat.

The thrust bearing has a bottom race seated in a socket and an upper race seated on a spindle.

Providing the upper anvil with a rotating head makes it possible to change the position of the anvil in relation to the shaped element without its frequent movement. The rotation of the upper anvil increases the total size of the ironed surface, contributing to increased productivity.

167 697

The anvil according to the invention is shown in an exemplary embodiment in the drawing, in which Fig. 1 shows a partial broken section and Fig. 2 shows a side view of the anvil from the lock side.

The upper anvil 1 is fixed on the cubes 2 placed on the lower surface 3 and screwed with screws 4 to the intermediate plate 5. The anvil 1 is fixed by wedges 6 driven into the known dovetail joint. The rotating head 7 consists of a holder 8 provided with four projections 9 and an intermediate plate 5 rotating around a rotating spindle 10. The pin 10 is located on a thrust bearing 11, the bottom race 12 of which is mounted with its outer diameter in the seat 13. The intermediate plate 5 is secured by a washer 14, with a nut 15 provided with a securing device 16 against unscrewing. In order to facilitate cooperation, the intermediate plate 5 has a pivot 17 engaging in the seat 18 made in the handle 8 with a clearance between the movable elements facilitating mutual rotation. On the side surface of the intermediate plate 5 and the handle 9 there is bolted 19, a lock 21 fitted with a bolt 22 provided with a bolt 22. The rotation of the bolt 22 is limited by a latch 23 containing a thrust 24. Releasing the bolt 22 releases the lock of the lock 21 allowing easy rotation of the upper anvil 1. The anvil 1 is attached to the press slider by means of bolts 25 passing through the holes made in the projections 9 of the handle 8. The anvil 1 is immobilized by means of oblique wedges 26 located transversely in the pins 25. The handle 8 has a groove for a seal 27 mounted on the spindle 10.

Fig. 2

167 697

Fig. 1

Publishing Department of the Polish Patent Office of the Republic of Poland Circulation 90 copies

Price PLN 1.50

Claims (5)

Patent claims 1. The upper anvil of a forging press, characterized in that it is attached to the rotating head (7) consisting of a handle (8) and an intermediate plate (5), loosely suspended on a rotating spindle (10) placed on a bearing (11) in socket (13) and a threaded socket (15) and securing device (16) against unscrewing, while between the intermediate plate (5) and the handle (8) there is a lock (21) with a bolt (22) securing the relative position of both elements. 2. An anvil according to claim The holder (8) is provided with protrusions (9) with holes in which fixing pins (25) are located, blocked by transverse wedges (26). 3. An anvil according to claim A device according to claim 1, characterized in that the intermediate plate (5) has bolted to the surface (3) of the lower block (2) and engaging in a wedge groove of the anvil. 4. An anvil according to claim The device of claim 1, characterized in that the intermediate plate (5) has a pin (17) rotatably arranged in a seat (18) of the handle (8). 5. An anvil according to claim 1 The thrust bearing (11) as claimed in claim 1, characterized in that the thrust bearing (11) has a lower race (12) mounted in the seat (13) and an upper race on the rotating spindle (10).