SU1026977A2 - Die for cutting rolled stock - Google Patents

Abstract

STAMP FOR CUTTING ROUND BY AUTH. St. No. 902995, characterized in that, in order to improve the quality of the obtained blanks, it is equipped with an axial support mechanism for the blank, made in the form of a support fixed on the main lever of the sliding knife clamping mechanism, mounted in a movable blade with the possibility of reciprocating movement along it , a toggle system associated with the anvil and support, and a pin mounted on the top plate with the ability to interact with the pivot-lever system. (L o w o) w vl

Description

The invention relates to the field of procuring production of construction plants and can be used when cutting rolled products into blanks. . According to the main author. St. No. 902995, a stamp for rolling products is known, containing upper and lower plates, movable and fixed knives mounted on the lower plate, and fixed knives with cutting elements and a clamping mechanism for clamping the rolled products, one of which is urted with the ability to interact with the movable knife clamp and is equipped with a main and With additional levers, in which the main lever of the mechanism behind the movable knife is mounted on the housing, the additional lever is mounted on the main lever and is connected to the upper plate. The cutting element of the movable knife is mounted on the main lever, and the clamp on the additional lever of the clamping mechanism l. The disadvantage of this stamp is the unsatisfactory quality of the cut, due to the fact that when cutting short workpieces, especially when the ratio of height to diameter is less than 0.8, the workpiece loses a cylindrical form, the non-perpendicular dimension of the cut plane to the long axis of the workpiece sharply increases. The purpose of the invention is to improve the quality of the resulting blanks. This goal is achieved by the fact that the stamp for cutting steel is equipped with a mechanism for the axial support of the workpiece made in the form of a support fixed. NOAH on the main lever of the movable knife clamping mechanism, the stop mounted in the movable knife with the possibility of reciprocating movement along it, the hinge-lever system associated with the stop and the supporting one, and the pin fixed on the upper plate with the possibility of interacting with the hinged-lever by the system. Figure 1 shows a general view of a die for cutting rolled products, a slit; in fig. 2 is a view A of FIG. one; in fig. 3 section bb in fig. 1. The stamp contains the upper plate 1 connected to the press ram and the lower 1 plate fixed on the press frame 2. On the lower plate 2 there is a housing 3 with a fixed 110ZHM 4 placed in it, the movable knife 5 is fixed in the lever b, which is connected by an axis 7 s housing 3 and 8 resistant, fixed on the bottom plate. On the lever 6, another axis 10 is pivotably mounted with the help of axis 9, in which the clamp 11 of the cutting knife 5 is located. The lever 10 is pivotally connected with the upper plate 1 by means of the earring 12. In the clamp 11 of the movable knife a spring-loaded ejector 13 is placed that is removed blanks. On the lever 6 is fixed console. Made in the form of rods 14 and pt 15, attached to the ends of rods. By means of a hinged-lever system, which includes levers 16 and 17, the first 15 is connected to the stop 18, which serves to axially support the cut-off workpiece. A pin 19 is attached to the upper plate 1, which interacts with the articulation by the lever 16 and 17. A spring 20 is used to retract the stop 18 to the initial position. Power cylinders 21 are mounted on the lower plate 2. Their rods 22 are connected to a pivot-lever system that includes levers 23 and 24. The other end of the lever .. 23 is pivotally connected to the body 3, and the lever 24 is connected with the rocker 25. The rocker arm 25 is fixed on the clamp 26 with the clamp 27. The stamp operates as follows. Into the cavity formed by the stationary JttJM knife 4 and the clamp 27, as well as the movable knife 5 and the clamp 11, a range intended for cutting is inserted up to the stop 18. the movement of the slider with the movable Plate 1 fixed on it down the lever 10 under the influence of the earring 12 starts to rotate around the axis 7 until it is closed with the lever b. At the same time, the power cylinders 21 turn on. When the rods 22 move their body 3 towards the case 3 3, and the lever 24 through the yoke 25, carries the clamp. 26 with the clamp 27 down. Clamping the workpiece. The pin 19, acting on the articulation of the levers 16 and 17, transmits the force to the stop 18. This creates an axial backing of the workpiece. The force of the axial support and clamping of the cut-off part of the rolled product increases until the workpiece is shifted relative to the assortment. Upon further movement of the slider down, the lever 6 together with the lever 10 rotates around the axis 7 "Simultaneously with them the stop 18, connected by the levers 16.17, the fifth 15 and the rods 14 with the lever 6, moves .- When the slider moves upwards. moves away from the articulation of the levers 16 and 17, under the action of the spring 20, the stop 18 returns to its original position. When the lever 10 rotates around the axis 9, the cut billet expands and under the action of the ejector body 13 moves out of the treatment area into the container, which is placed on the fixed plate 2. At the same time, the uncut part of the gauge is unclenched. 3. Rglchagi, acting through the rocker arms 25, carry the clamp 26 with the clamp 27 up;

Depending on the material of the cut gauge, the size of the axial back-up is adjusted by extending the pin 19. The length of the cut-off preparation is adjusted.

set according to the diameter of the rolled steel.

The use of this invention will make it possible to improve the quality of the obtained blanks as compared with the base object, which is taken as a prototype.

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Claims (1)

STAMP FOR CUTTING RENT by ed. St. No. 902995, characterized in that, in order to improve the quality of the obtained workpieces, it is equipped with a mechanism of axial support of the workpiece, made in the form of a support mounted on the main lever of the clamping mechanism of a movable knife, an emphasis mounted in a movable knife with the possibility of reciprocating movement along it, a hinge system associated with a stop and a support, and a pin mounted on the top plate with the possibility of interaction with the hinge-lever system.