SU1412822A1 - Tube cold rolling mill - Google Patents

Abstract

The invention relates to pipe production and relates to the improvement of cold rolling mills with cargo balancing of reciprocating masses. The purpose of the invention is to increase the manufacturer V ////// FIG. J, increase reliability and simplify the design. The pipe cold rolling mill contains a working roll stand 1 mounted on the guides, driven by a reciprocating movement in the form of a rotor 4 and installed in a rotor offset from the axis of rotation of the crank shaft 6 with a pair of cranks 7 and 8. The crank 7 is connected to the stand body, and with crank 8, an equilibrium load 9 is connected, mounted in guides with the possibility of reciprocating movement. The guide stands of the balancing load are made in the form of horizontal cylindrical rods for the support sleeves of the stand body and the load. 2 Il. i (Л tSD 00 1чЭ 1чЭ W 777

Description

The invention relates to the pipe-rolling industry NJiy and concerns the improvement of the cold rolling of pipes with cargo balancing reciprocating-moving-moving masses. A: The purpose of the invention is to increase productivity, eliminate reliability, and simplify the design.

FIG. 1 shows a kinematic hema mill; on fi1. 2 - scheme, plan. I, the mill contains a working stand 1 installed on the guides made by IB as a horizontal cylindrical | tangent 2 iodine sleeves 3 of the stand corner, | drive the reciprocating return train, having a rotor 4 toothed I drive 5 of the rotor and vertically fit- ing in the rotor with displacement relative to the axis of rotation, crankshaft shaft 6c with a pair of curvatures 7 and 8. Crank 7 connects with the stand body, and with the unfolded 180 ° curvature type 8, an equalizing load 9 is connected, set in nanowires, made in the form schtang cylindrical sleeve 10 under onornye 11 Cornus load balancing. Inflow stands and loads are placed mutually perpendicular. FIG. 2 marked O - the axis of the lie of the rotor; A is the axis of rotation of the shaft curvature, which is offset from the axis of rotation of the rotor; B - the place of attachment of the crank pin 7 to the stand body; B - the place of attachment of the curve 8 of the finger 8 to the balance i-ruzu, at the same time VA B, AB c.

The camp works as follows.

In conjunction with the rotor, crank shaft 6 rotates in the sub-shaft support, the rotational movement of which rotates the linear displacement of its crank pins 7 Г1-8 and linearly connected hull of the stand 1 and the counterbalancing load 9 that do not move mutually alternating. The nature of their non-displacement can be explained by the fact that each of the crank pins 7 and 8 reciprocates along a two-legged hypocycloid, i.e. but by the direction of HU and HJ (I’m in Fig. 2), and since the shoulders of crank pins 7 and 8 are equal to each other, they are equal to the axis of the crank shaft from the rotor axis and a quarter of the length of the stand hypocycloid is caused by iairavlimi gEU of the movement of point B and on one of the vanishing of the movement of the point B, located perpendicular p1iz each other. As is known, the curve described by a point lying on a circle, when this circle is rolling without sliding inside another circle, has the character of a hypocycloid, the number of branches of which is equal to the ratio of their radii. If it is a relationship

If two are equal to two, then the two branches of the hypocycloid degenerate into diameter bo. 1ts (of a non-movable circle, and the upper speck of a point interlace straightly along the diameter of a fixed circle along a cosine-1 rule, which follows from the equation of motion of a point, ogp-1 passing hypocycloid in the case of internal rolling, when the radius of the small circle is half the radius .long irregular circumference. CycQ the personal nature of the change in the movement of the casing body and the counterbalancing load of the predirection; 1I1 t sowing soothes and the character of the change of inertial forces of the moving masses and sinusoidal character of the changes moments of these forces, and the equality of their displacements and. mass determines the equal value of accelerations, inertia forces and dynamic .MOMeirroB as a function of rotation of the rotor 1. The diameter is the opposite arrangement of the crank and I. 7 and 8 allow 1 to fully balance the dynamic moments from the movement of the corns of cages 1 and 1 ruza, i.e., closed them on the crank shaft and to obtain a total dynamic moment equal, since the acceleration of the corns of cage 1 corresponds to the braking balance of the load, and the moment of reaching by the corn Fly the highest speed balance cargo reaches its dead center, and vice versa.

Horizontal mutual direction of the hull of the stand and the counterbalancing load de. It is possible to balance the dynamic forces and moments by precise selection of the mas5 - UR shining load, paBiioro on the body to the body, 1 network, which is difficult - i.e. iipea-. Precise equilibration of the cage with decreasing-1I of its reciprocating-after moving masses for the non-direct connection of the cage with the crook-type and setting it and the balancing load by means of replaceable sleeves on the cylindrical guides allows you to increase the speed of cells (; wear resistance and repair ability of parts and power

5 drive units and eptm - reliability and durability of its work. Sovokushyusk constructive signs will provide relief and increase in productivity of the entire mill.

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Claims (1)

Invention Formula The cold rolling mill of tubes containing a working cage mounted on the gun supports and its return-translation drive, having a rotor, a toothed rotor rotation and installed in a rotor displaced relative to the axis of a curved shaft and a crank shaft with a pair of rotated relative to each other friend on 180 ° cranks, one of which is pivotally connected to the Cornus of the counterbalance weight, is pivotally connected to the other Crank and mounted with the supports in the guides with the possibility of reciprocating alternating in perpendicular distance between 1 and 1 a direction, characterized in that, in order to increase 1pc from (), H) H (), to increase reliability of operation and to simplify the design, the crankshaft is set to the vertical axis. Or, on this, the cage and balancers of the cage of the H-beam are made in the form of interchangeable sleeves, and the guides in the form of cylindrical sleeves under the support bushings horizontally stirred.