SU108352A1 - Press for editing large-sized thin-walled parts with shaped surfaces - Google Patents

Description

The known devices for straightening large-sized thin-walled parts with shaped surfaces with the implementation of pre-heating the parts to a temperature of high plasticity do not provide a quality edit, due to uneven cooling.

The use of cold shock editing of large-sized thin-walled parts with shaped surfaces creates intercrystalline work hardening on the latter and leads to an additional significant concentration of stresses, in addition, such editing is labor-consuming.

The feature of the described press is that, for the most favorable scheme for distributing deforming efforts over the surface of a part, it is made with several rows of working pneumatic cranial arms movably mounted on several movable parallel traverses, with shaped lining elements placed on the bottom plate,

electrically heated.

Such an embodiment of the press made it possible to combine heat treatment with hot dressing of large-sized thin-walled parts with a favorable distribution of deformation forces over the surface of the part.

FIG. 1 shows a press, side view; in fig. 2 is the same, top view; in fig. 3 - the same, front view.

A working plate 2 is placed on the trolley /, on the vertical posts 5 of which horizontal beams 4 are fixed, which are ways to move the parallel crossbars 5.

On each traverse, movable pneumatic cylinders 6 are located, the rods 7 of which with heels 8 are punches carrying out local loads on the straightened part. Each cylinder is provided with an individual pressure regulator, which varies the latter over a wide range depending on what is needed for each particular part.

On the working plate 2, interchangeable liners — lodgments — I accurately reproduce the shape of the articulated surface of the workpiece or group of parts according to the appropriate configuration. Some lodgements are equipped with induction-type electric heaters JO, which provide additional heating for those parts that enter the press at a temperature lower than that required for hot straightening.

For controlling the rate of cooling of the part, forced cooling of the lodgments with compressed air or water is provided.

Subject invention

Claims (2)

1. Press for editing large-sized thin-walled parts with shaped surfaces with preheating of parts to a temperature of increased plasticity, using interchangeable shaped linings, characterized in The press is equipped with several rows of workers, for example pneumatic cylinders, movably mounted on several movable parallel cross-arms, each of which has an individual pressure regulator that regulates the working pressure in wide limits. 2. The press according to claim 1, characterized in that, in order to increase the accuracy of a given shape of the part surface and productivity, the shaped supports are placed on the lower plate of the press and are made in the form of lodgments with forced cooling. 3. Press on PP. 1 and 2, characterized in that, in order to provide the possibility of additional heating of the part directly on the press, electrical heating elements are placed in the removable cradle.