SU1235603A1 - Mill for rolling annular articles - Google Patents

Description

2. The mill according to claim 1, that is, with the fact that the drive for moving each rod is made up of power hydraulic cylinders mounted on the guide pillars, whose axes coincide with the direction of movement of the rods, and the linkage mechanism is sync. relates to the processing of metals by pressure, in particular to the manufacture of ring products for mechanical engineering, and can be used in the design of ring and bandage rolling mills.

The purpose of the invention is to expand the technological capabilities of the mill by ensuring the manufacture of ring products with a wide shelf along the internal contour,

1 shows a diagram of a mill for rolling ring products; in (} "g, 2 - section A-A in Fig.; in Fig. 3, a diagram of the force movement of the rollers of the end rolls.

The mill consists of a bed 1, a drive outer roll 2 fixed in a bed, a pressure inner double support roll 3 mounted in a movable support 4, end drive rolls 5 located in the carriage 6 moving relative to the longitudinal axis of mill II on bed I , a pair of guide rollers 7 with supports 8 mounted on the base I, a pair of guide rollers 9 installed on rods 10 made in the form of sliders and mounted on supports P with the possibility of reciprocating This carriage end rolls 5 and the rolled product. The axis of movement of each of the rods 10 in the guide supports 11 lies in the radial plane of the rolled product and is directed at an acute angle to the plane passing through the axes of the end rolls 5.

The support 4 is connected to the C1 ω hydraulic cylinder 12. The guide rollers 7 are connected by means of a hydraulic motor 13 14. The guide rollers 9 are connected

This consists of an earring and two tons of grams, each of which is pivotally connected at one end to a corresponding rod and the other to a link moving in guide carriages in a plane passing through the axes of the end rolls.

between each other, gami 15 through the shackle 16, moved in the direction 17 of the carriage 6 of the end rolls. The shank 16 moves in a plane passing through the axes of the end rolls 5 (Fig. 1).

Each of the rollers 9 is connected with a hydraulic cylinder 19 mounted on guide supports i1. The axes of each of the hydrocylinids 19 coincide with the direction of movement of the rods 10 in the guide bearings P.

The pair of guide rollers 9 is reset to the initial position through the connecting rod 18 by means of hydraulic cylinders 19, 15 and 15, depending on the initial curvature of the original billet 20. As the diameter of the rolled product increases. 20, the guide rollers 9 are synchronously retracted under the action of the hydraulic heads 1, 19, 18 and 18 and the studs 16. In this case, the guide rollers 9 serve to support the ring blank 20 during the rolling process. Such movement of the guide rollers 9 is required in the manufacture of annular products of simple shape — cross section, e.g., rectangular, square.

In the manufacture of annular products of a complex profile with a wide shelf along the inner contour, the guide rollers 9 are applied to the rolled product 20 and using the force action of the hydraulic cylinders 19 create a directed force (p) on the carriage 6. rolls 5 and two guide rollers 9, between which the forming is carried out. this contour of the product in cross section. As the diameter increases, it can be procured3

go the product, the carriage 6 with the end shaft us 5 moves to the right from position B to position B, and the guide rollers 9 to the left at an angle about the longitudinal axis of the mill 1-1. For example, in the initial state, the guide rollers 9 are in a position (FIG. 3) characterized by distance I relative to guide supports 1I and distance S relative to the center O of the end rolls 5. At the end of the rolling process, guide rollers 9 by Constantly directed force action on the product 20 relative to the carriage 6, together with the end rollers participate in shaping the specified product profile, i.e. perform the function of a deforming tool.

Such an alternation of changes in the functions of the guide rollers 9 (support in the rolling process of simple profiles or participation in shaping the profile by force action in the rolling process) expands the technological capabilities of the mill due to the possibility of making ring products with a wide flange along the inner contour.

The original ring billet 20 is loaded into the mill on the inner roll 3. Under the action of the ram 1 2, the slide 4, together with the inner roll 3, is moved to the left until the workpiece 20 touches the outer Hbw roll 2. At this moment, the outer roll 2 is driven and the workpiece 20 is rolled in the radial direction. The workpiece 20 is supported on the side of the outer roll 2 by guide rollers 7 from hydraulic actuators 14 through rods 13 relative to supports 8. At the same time, carriage 6 with end rolls 5 and guide rollers are also moved to the left. In this case, the upper face roll 5 is raised to the upper end position. At the moment when the workpiece. 20 will appear in the solution of the end rolls 5, the upper end roll is lowered under the action of a hydraulic actuator (not shown) until it touches the end faces of the rolled billet 20, i.e. begins

356034

compression of the workpiece. in the axial direction.

In the case of manufacturing simple-shaped annular products, cross-sectional sections, for example rectangular, square, a pair of guide rollers 9 with rods 10 are reset to their original position by means of hydraulic cylinders 19 through rods 15 and 18 and 0 of the shackle 16. As the diameter of the rolled the products 20, the guide rollers 9 are synchronously retracted under the action of hydrocyliidra 19, tg 15 and 18, and the earrings 16. If the product is being rolled out to be of considerable size, then in this process the carriage 6 with end rolls is also synchronously retracted to the right.

In the manufacture of ring LIW with a wide shelf along the inner contour, the guide rollers 9 are fed to the rolled billet 20 and with the help of the force action of the hydraulic cylinders 19 through rods 10, ti gi

25 18 create a directed force (P) on it relative to the carriage 6. The synchronization of the forces (P) is carried out by the nuts 15 through the link 16. In the following, the process is carried out according to the described 30 sequence. As a result of this process, when the hearth strain. It is formed by two end rolls 5 and a pair of guide rollers 9, shaping is performed for this product contour, i.e. internal shelf required size. In the end, get the ring products 20 with a given size. After the rolling process is completed, the head roll is raised, the carriage 6 is retracted to the right, and product 20 is unloaded from the mill.

Thus, making a pair of guide rollers 9 with the possibility of forceful reciprocating movement relative to the carriage 6 and the rolled billet 20 in the radial plane of its rolling and directed at an acute angle (/) to

The plane passing through the axes of the end rolls 5 expands the technological capabilities of the mill by obtaining articles with a wide shelf along the inner contour.

Editor N. Tupitsa

Compiled by M. Tarlavska

Tehred V. KadarKorrektor M.Maksimitsganets

Order 3041 / 8Deletion 655Subscription

VNIIPI USSR State Committee

for inventions and discoveries I13035, Moscow, Zh-35, Raushsk nab., 4/5

Production and printing company, Uzhgorod, st. Project, 4

Fig.Z

Claims (2)

1. A ROLLING ROLLING MILL, comprising an external drive roll installed in the frame, an internal roll mounted in the drive support, and two face drive rolls installed. ~ in the carriage with the possibility of relative relative displacement in the axial direction and movement together with the carriage along the longitudinal axis of the mill passing through the axis of the outer and inner rolls, two drive centering rollers located on the frame from the side of the outer roll, characterized in that, for the purpose of expansion technological capabilities of the mill, it is equipped with a pair of power rollers mounted on rods made in the form of crawlers q q and installed in guides ® supports mounted on the end carriage carriage, p and this rod mounted to the forced reciprocating movement of the supports relative to the guide carriage roll of face, a ', each rod is inclined at an acute angle to the plane passing through the axes of end rolls. SI „1235603 2. Mill according to π.1, characterized in that the drive for moving each rod is made in the form of power hydraulic cylinders installed on the guide supports, the axes of which coincide with the direction of movement of the rods, and a lever synchronization mechanism consisting of an earring and two rods, each of which is pivotally connected at one end to a corresponding rod, and at the other, to an earring moving in the carriage guides in a plane passing through the axes of the end rolls.