SU236247A1 - PRESS FOR EDITING ROD SCREW SCREENS - Google Patents

Description

Known lress for straightening the blades of propellers, hydraulic, stationary, containing the frame with a working body located on it.

The proposed press differs from the well-known body 1 that the working body is made in the form of two bending pouls located on both sides with respect to the horizontal axis of the press with the possibility of their movement towards each other in a plane passing through the axis of the screw being corrected and having the latter linear kantazht One end of the bending punches is pivotally connected to the cylinder, which is cantilever-mounted on the frame, and the other is in contact with the stationary cylinder, mounted in the frame and intended to secure the bending punch in the required position.

Such an embodiment of the press makes it possible to edit the blades of alternating bending without turning them, to maintain the shape of the helix of the blade, since the editing is carried out in a plane passing through the axis of the screw, and the contact of the working member with the blade is linear.

FIG. 1 depicts the described press, side view; in fig. 2 shows sections along A-A and B-B in FIG. one.

and 3, bending punches 4 and 5, which are the working body of the guides 6 and two cantilever rocking cylinders 7 and 8.

To prevent possible deformations of the working bodies from asymmetrical loads and sampling gaps from being transferred to the hydraulic cylinders, a hinged and free connection of the working body to the hydraulic cylinders is provided.

and the last - with a frame.

The swivel device includes a cart 9 with wheels 10, a supporting swing frame //, a rail 12 and a counter rail 13, a turn mechanism 14 and a stopper 15 securing the position of the cart.

The press works as follows. The propeller 16 assembled with the shaft is mounted on the carriage 9, where there is a special seat for the mandrel shaft. In the case when the technological process excludes the use of shaft-mandrels, special centering conical washers are used. With the help of t g 17, the propeller is rigidly connected to the rotary frame //.

A screw with a deformed blade is pushed onto the trolley by iodine punch 4 and 5 by the amount of the bent portion of the blade. Depending on the direction of the deformation, the following sequence is performed and the displacement is bent upward, the displacement piston 5 is first displaced before contact. With the help of cylinder 8, bending punch 5 is set in one line with the generator of the suction surface of the blade and fixed in this position are cylinders 3 and 8. Then the rod of hydrocyliidre 2 is lowered with the left end of the bending punch 4 to such a position; then the lower edge of the bending punch will be 1 lower than the upper part of the bent blade, and the cylinder 2 is fixed in this position. By supplying hydraulics to the cylinder 7, a partial alignment of the bent part of the blade is started according to the di-p1 action of the bending punch.

After a slight alignment in one place, the screw on the carriage 9 is turned by the rotation mechanism 14 at a small angle so as to bring the still unbent part of the deformed blade under the bending punches. Before turning the screw, all the hydraulic cylinders are moved away from the surface of the blade by the working bodies, which ensures the possibility of free turning of the screw.

After completing the rotation of the screw, all the hydraulic cylinders repeat the sequence of movements. The method of successive actions completes the process of leveling the deformed blade. In this case, the alignment check is carried out along a bending punch 5, which must continue the line forming the discharge surface.

The alignment of the blades bent in the opposite direction is carried out similarly, with that

the only difference is that the bending punch 4 is installed first along the line forming the discharge surface. The bending punch 4 is bendable with a bending punch using the tilting cylinder 8 to unload the blades at a fixed position of the other cylinders.

The described press provides a simplified control over the quality of the edits as a result of the installation of the pedometer on the screw hub and the use of a rotator.

Subject invention

Press for straightening the blades of the propellers, hydraulic, stationary, containing a frame with a working body located on it, characterized in that, in order to improve the quality of straightening the blades of the alternating bend without turning them, the working body is made in the form of two located on both sides of the horizontal axis press of bending punches with the possibility of their movement towards each other in a plane passing through the axis of a fixable screw and having a linear contact with the latter, one end of the bending punches connected to a cylinder mounted on a frame with a cantilever motion, and

the other is in contact with a sliding cylinder mounted in a frame and designed to secure the bending punch in the desired position.

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