SU863074A1 - Die for end bending of sheet works - Google Patents

Description

(54) STAMP FOR SIZED BENDING OF SHEETS

one

The invention relates to the processing of metals by pressure, in particular to dies for face bending of sheet blanks.

A known stamp for face bending sheet blanks, containing placed on the bottom plate stand for the workpiece, mounted on the top plate spring-loaded clamp and composite bending tool with a closed loop. One part of the bending tool is rigidly fixed to the clamp, and the other is placed on the slider mounted on the bottom plate with the possibility of translational movement in the plane of bending and interacting with the CLI.NOM rigidly fixed on the top plate 1.

The disadvantage of this chip is the low quality of the parts produced due to the formation of corrugations and the ovality of the bent part of the workpiece.

The purpose of the invention is to increase the quality of the parts obtained by eliminating the formation of corrugations and ovals of the bent part of the workpiece.

To this end, in the stamp for the ends, sheet blanks are flexible, containing a blank stand placed on the bottom plate, a spring-loaded clamp mounted on the top plate with a bending tool forming a closed loop with a bending tool mounted on a slider mounted on the bottom plate with the possibility of translational movement in the planes are flexible and interacting with a wedge rigidly fixed on the top plate, the stand is mounted with the possibility of translational movement in the direction perpendicular to gibfO ki th plane, the bending tool clamp is attached in the latter with the possibility of translational movement in the direction of movement polzuschki and biased in this direction, and the stamp is provided with cantilever mounted on the bottom plate bending

15 with a mandrel, spring-loaded in the direction of movement of the slider, and spring-locked in the same direction with the lock of the free end of the mandrel mounted on the stand.

FIG. 1 shows the proposed stamp, section; in fig. 2 - the same plan; in fig. 3-section A-A in FIG. 2

Claims (2)

The stamp contains a stand 2 for the workpiece 3 and a lolzushka 4 with bending tools 5 located on the bottom plate 1. The sliders 4 are installed with the possibility of actual movement in the plane of bending and are spring-loaded to the bottom plate I by springs 6. On the top plate 7 there are rigidly fixed wedges 8, which interact The sliders 4, the clamp 9 with the bending tool 10. The bending tool 10 is fixed in the clamp 9 with the possibility of translational movement in the direction of movement of the sliders 4 and is spring-loaded in this direction by the spring 11. On izhney fixed plate I protnvootzhi. We -12, serving for abutment wedges 8 during the working stroke, and the abutment 13, designed to limit the stroke stand 2, which is mounted on the bottom plate 1 with the possibility of translational movement in a direction perpendicular to the bending plane. On the stand 2 are placed the stops 4 and 15 for the installation of the workpiece 3 and the scoops 16, spring-loaded springs 17, to support the free end of the mandrels 18. The mandrels 18 are cantileverly fixed in the holder 19 of the lower plate 1 and spring-loaded in the direction of movement of the sliders 4 by springs 20 5 and the carrying crawlers 4 are compensators 21. The stamp works as follows. The workpiece 3 is placed on the movable stand 2 between the lugs 14 and 15 and is moved until the abutment 14 contacts the holder; 19. In the working position, the workpiece 3 is located under the mandrels 18, and the ends of the mandrels 18 enter into the holes of the latches 16 located on the stand 2. When moving the upper movable plate 7 down clamp 9 presses the workpiece 3 to the stand 2 with its lower part. Upon further advancement of the upper plate 7, the wedges 8 interact with the half-shears 4, and the bending tools 5, mixing towards each other, form with the bending tools 10 of the clamp 9 a closed forming contour in which the mandrels 18 are placed. 3, while during the bending process the mandrels 18 and the bending tools 10 move together with the bending tools 5. As the movable plate 7 moves upward under the influence of the Springs 6 and 11, the bending tools 5 and 10 move apart and release the workpiece at 3, which is removed from the mandrel 18 while returning the movable stand 2 to the initial position against the stop 13. A proposed arrangement permits the die to produce parts of high accuracy and with two closed circuits simultaneously, which considerably povyschaet productivity and quality sunset, ki. Claims of the Invention Stamp for face bending of sheet blanks containing a blank stand placed on the bottom plate, a spring-loaded clamp mounted on the top plate with a bending tool forming a closed loop with a bending tool mounted on a slider mounted on the bottom plate with the possibility of translational movement in the plane of bending and interacting with a wedge fixedly connected with the top plate, characterized in that in order to improve the quality of the parts obtained by eliminating development of corrugations and ovality of the bent part of the workpiece, the stand is mounted with the possibility of translational movement in the direction perpendicular to the plane of the bending, the bending tool of the clamp is fixed in the latter with the possibility of translational movement in the direction of movement of the slider and is spring-loaded in this direction, and the stamp is provided with a console fixed on the bottom plate bending mandrel, spring-loaded in the direction of movement of the slider, and pod-spring-loaded in the same direction with the lock of the free end of the racks mounted on a stand. . . ,; . . . , Sources of information taken into account in the examination of i. V. Yosherin. Listova stamping. Atlas of schemes. M., 1975, p. 100; rice 249. 863074