SU703166A2 - Mechanism of turning cold tube rolling mill - Google Patents

Description

em spring. When idling, the spring unwinds, thus compensating for the lag of the hydromotor motor during loosening of the worm from zero to the working speed; at the same time, the roller is constantly pressed against the cam at lower loads on the mechanism elements. FIG. 1 ridxRa 9aHpredNVgagayem rotation mechanism, view in plan; in fig. 2 - the same, section along A-A. On FIG. one.

The mechanism of rotation of the cold rolling mill tube consists of a drive ,. %: Aschiggs with constant speed from the main drive of the profile Cam 1, interacting with it through the roller 2 reciprocating

. move the pusher 3, installed on the pusher of the worm 4, the worm gear 5, the shaft of the rotation of the shaft b and the drive return of the pusher. - -:;

The return drive of the pusher 3 is made in the form of a hydraulic motor 7 connected to the screw shaft through a sliding clutch. The sliding sleeve is made up of two halves 8 and 9 and is covered by a spring of 10 k | handles, with one half

8mufs connected through a sliding lunoHKy lib

9 is rigidly mounted on the shaft 12 of the motor, and the connection between the parts of the coupling is carried out by the torsion spring 10. The installation of this spring allows the motor to operate without stopping. fjastuH it to the maximum speed does not occur with a zero, but with a close to the maximum speed,

The motor has a torque regulator 13, which can be activated as a brake, or a reduction valve in the hydraulic motor control system, or in the form of other known torque control devices. The screw to 4. is mounted on the toller 3 with the possibility of turning, and the screw of the wheels, about 5 at the time of returning the pusher, is kept from turning the needle. The mission of turning by the work rolls.

  The mechanism works as follows ..1,. The profile cam 1 constantly rotates from the main drive of the mill. At the time of the working approach year,: To the front end position, cam 1 through roller 2 moves the pusher 3 in the axial direction, as long as the fused arrow. At the same time, the worm turns to 4; Wormthwheel Wheel 5 i; a Ig lKttbi and a rotation shaft, which is associated with rotation yatrons. At this point, the worm to 4 moves only linearly, working as a rake, since the torque of the hydraulic motor 7 is not enough to overcome the frictional forces in the screw pair that occur during this period of the cycle. Since the worm to does not rotate during the period of rotation, i.e. under the load of rotation, the wear of the worm pair in the A-position is insignificant. The shaft 12 of the hydromotor continues to rotate during the rotation cycle, and when the roller interacts with the cam in the section of the angle C (see Fig. 2), the spring 10 of the motor is tightened. After the shaft has been rotated by 4, it corresponds to the angle of rotation of the bogs and its capture by rolls, the mill, i.e. termination of the workload mechanism and further rotation of the cam 1, worms to 4, rotating, under the action of the torque of the hydraulic motor 7, performs translational movement in the direction indicated by the dashed arrow, and works as

wriggle out of the worm

screw.

wheels 5.

The worm gear 5 and the rest of the KMeMaichesky Chain are also stationary, since the torque of the hydraulic motor 7 is not enough for; overcoming the moment of the regulator 13. At the same time, due to the rotation of the worm gear 5 from the worm gear 5 accelerated relative to the rotational speed of the motor, in the section where it is necessary to ensure a high speed of rotation of the screw, i.e. in the angle section 3 (see Fig .2), the spring, unwinding and advancing the rotation of the hydraulic motor, provides. a high speed of rotation of the screw, i thanks to why the pusher roller does not detach from the profile cam at high rolling speeds. The motor works more evenly without peak speeds and there are no hydraulic shocks in the CHCTfeMe.

Thus, the proposed rotation mechanism ensures a constant pressing of the roller of the pusher against the cam at lower loads, somewhat exceeding only the masses of the screw, the pusher and the coupling, thereby increasing the high-speed mechanism.

Claims (1)

Invention Formula Furs; not a single turn of the cold rolling mill; 531569, characterized in that, in order to achieve its high speed, the sliding clutch connecting the screw shaft with the hydraulic motor is composed of two halves and is equipped with a torsion spring enclosing it. .-ffin vVnago drive x M J5