SU116035A1 - Roll Bending Machine - Google Patents

Description

Known bending casting machines are designed for the simultaneous execution of an insignificant part of the bending operations and a large amount of time is spent on all the bending operations on one or a series of machines.

The described roll-bending sheet-machine allows for the simultaneous forming of a sheet by bending and rolling, as well as bending the input and output ends of the part and create rolling forces.

To accomplish this goal, the machine is made with two drive rolls, whose axes are located in the same vertical plane, and two bending rolls, symmetrically arranged with respect to the drive rolls. The machine also uses hydraulic stops with a follow spool for fixing the crosspiece in the required position and a mechanism for automatically adjusting the curvature of the part to a predetermined value.

FIG. 1 shows in three projections a general view of the machine; in fig. 2 shows the arrangement of the rolls; in fig. 3 and 4 - schemes of operation of the machine and in FIG. 5-kinematic diagram of the curvature tuning mechanism.

The main components of the machine are bed 1 (fig. 1), yoke 2, bed 3, power cylinders 4, bending roll carriages 5, hinges 6, distribution gear 7, main drive 8, bending roll movement mechanism 9, loading tables 10, receiving device //.

The machine is built on the principle of action of an active medium force and two lateral reactive forces, with a device that allows the bending rolls to be moved at any angle to the vertical axis. To implement the bending on the machine, the scheme (Fig. 2) of the symmetrical arrangement of the rolls is applied: two drive 12 and 13, located in the same vertical plane, and two bending 14 and 15, located on the sides of the drive rolls.

No. 116033-2 -

This arrangement of the rolls allows the bending process to be carried out by bending-rolling (Fig. 3) and by bending according to the type of bending presses (Fig. 4), in the latter case, instead of the roll 12, a punch is used.

The presence of an automatic curvature adjustment mechanism of the sheet being bent allows the part to be edited immediately after the bend, a manual curvature refining operation.

On the hydraulic pore of the next spool 16, a screw 18 (Fig. 5) is used to fix the stop 18, which limits the traverse downward movement to obtain a given curvature of the part. To lower the yoke 2 (Fig. I), the oil is fed into the upper cavity of the hydrocylide / I on the stem of which the stop 20 is fixed with a bracket 21, on which the automatic lowering mechanism of the yoke is mounted. The movement of the hydraulic cylinder rod 19 is transmitted through the screw 22 to the stem of the next spool 16. The latter transmits the movement to the power cylinder rod, and consequently, to the traverse. The lifting of the crosspiece is carried out by supplying oil to the lower cavity of the hydraulic cylinder 19, i.e., by moving the rod upwards.

The machine is controlled from the central console, at the same time all its main commands are duplicated with two remote controls placed on the loading desks.

The subject matter of the invention.

Claims (3)

1. Roller bending machine, built on the principle of active medium force and two reactive forces, with a device that allows you to move the side bending rolls underneath to the vertical plane, as well as with automatic control and hydraulic drive of the upper pressure roll, characterized in that in order to simultaneously form the sheet by means of bending and rolling, as well as bending the input and output ends of the part and creating a rolling force, the machine is made with two drive rollers, the axes of which olozheny in the same vertical plane, and the two bending rollers, symmetrically arranged with respect to lead 2. The machine tool according to claim 1, characterized in that, in order to fix the crosshead in the required position, hydraulic stops with the following slide bars are used. 3. The machine according to PP-1 and 2, characterized in that, in order to obtain a given curvature of the part without further refinement, regardless of the physical and mechanical properties of the workpiece, the mechanism of automatic adjustment of the curvature of the part is used.