SU409743A1 - - Google Patents

Description

one

The invention relates to rolling production, in particular, to working cages of three-rolls of screw rolling tubes.

The known working stand of the three-roll helical rolling mill includes a bed, cassettes equipped with guides, in each of which, rollers with rollers movable from the pressure screws are installed, the feed angle change mechanism, the rolling angle adjustment mechanism are mounted at an angle to the rolling axis.

However, in such a stand, the position of each roll relative to the rolling axis, the change of the rolling angle and feed angle are made separately for each roll.

In order to provide independent adjustment of each roll of the proposed stand, each of the clips is equipped with an additional element that is rotatable from a separate drive of the angle adjustment mechanism and rotatably mounted from the drive of the feed angle change mechanism, the roller axis aligned with the axis of rotation of the rotary element. Also, the swivel and additional elements are made U-shaped moving against each other.

FIG. 1 shows the described working stand of a three-roll helical rolling mill; in fig. 2 is a section along A-A in FIG. one; in fig. 3 is a section along BB in FIG. one.

The working stand of the three-roll mill of helical rolling tubes includes a frame 1 with cassettes 2 mounted into it, equipped with guides 3, each of which

at an angle to the axis of rolling, clamps 5 with rollers 6 being moved from pressure screws 4 are installed. Each of the holders is provided with a rotation angle from a separate drive 7 of the rolling angle adjustment mechanism (there are no

shown) element 8 and rotatably installed in it from the drive (not shown in the drawings) of the mechanism for changing the feed angle (not shown in the drawings) with an additional element consisting of a housing 9 and a removable

support 10 work roll.

The working stand of a three-roll mill rolling mill is configured as follows.

The roll 6 is installed at the required feed angle by rotating the body 9 of the additional element in the rotary element 8 using the mechanism for changing the feed angle (not shown). In the new

The position of the body 9 is fixed using a wedge locking mechanism 11.

The roller 6 is set to the desired angle of rolling by turning the rotary element 8 in the half-ring cuts 12 of the cage 5 under

the action of a separate drive 7 mechanism

adjusting the angle of rolling (and drawings not shown).

The rolls are set to the required size of the gauge (not shown in the drawings) by moving the sleeve 5 together with the turning element -8 on the body 9 of the additional element in the guide 3 cassettes 2 with the help of the pressure screws 4.

After setting up the working stand of the three-roll mill mill and the required size, the normal BMiiToj tube rolling process is performed.

Subject invention

Claims (2)

1. A working stand of a three-roll mill for helical rolling of tubes, including a stand, cassettes equipped with guides, in each of which the rollers with rollers moved from the pressure screws, the feed angle adjustment mechanism, the feed angle change mechanism, different from that, in order to ensure the independent adjustment of each roll of the cage, each of the clips is equipped with a new element that is rotatable from a separate drive of the mechanism for adjusting the angle of rolling The replacement of the nodal angle is an additional element, the roll axis being aligned with the rotation axis of the rotatable element. 2. The working stand according to claim 1, characterized in that the rotary and additional elements are made of C-shaped and movable relative to each other. FIG. 4j i | §1 || si