SU975146A1 - Bending die - Google Patents

Description

(54) STAMP FOR FLEXIBLE

The invention relates to pressure treatment, in particular to dies for bending, and can be used in the manufacture of parts such as frames.

A device for bending parts such as frames is known, comprising a central mandrel and bending members movable relative to it, pivotally connected to levers movable from self-driving actuators 1.

The disadvantage of this device is its great complexity due to the need for self-contained drives.

The closest in technical essence and the achieved result to the invention is a stamp for bending frame-type parts containing a rigidly mounted mandrel on the bottom plate and preliminary bending tools movable relative to it, as well as final bends moving relative to the mandrel mounted on the top plate with the ability to interact with the punches 2J.

The disadvantage of this stamp is the inconvenience of operation due to the installation of final bends on the wedges connected to the upper

because of the mobility of this whole cumbersome tool system with the top plate, the purpose of the invention is to improve working conditions.

This goal is achieved by the fact that a stamp for bending of parts such as frames containing rigidly on the bottom plate

10 an installed mandrel and pre-flexible punches movable in relation to it, as well as final bends punched under the mandrel, mounted on the top plate with the possibility of interacting with the punches, are fitted with sliders mounted on the bottom plate with the possibility of movement relative to the mandrel under

Twenty angles to the direction of movement of the punches are pre-bending and the interaction of the wedge m. Each punch is finished. The bending is connected with the corresponding slider hinge, the axis of rotation 25 of which is perpendicular to the direction of movement of the slider, and is provided with a protrusion, the axis of which is parallel to the axis of the hinge, the bottom plate is made guides

Claims (2)

30 sliders and grooves, and the protrusion of each punch is located with the possibility of moving in the corresponding slot. At the same time, the working surface of the mandrel is made with undercuts. FIG. Figure 1 shows the layout of the working parts of the stamp on the bottom plate; in fig. 2 is a cross section of L-A in FIG. one; in fig. 3 section on 1fig. one; in fig. 4 - mandrel stamp; in fig. 5 - final punch flexible / in FIG. 6 - slider; The stamp contains the bottom plate 1 on which the mandrel 2 is installed, the pins are pre-bending 3 with the springs 4, the clamp 5 with the spring b and the final bending punches 7, connected with the slider 8 hinges 9. The sliders 8 are provided with springs 10. The punches 7 are provided with protrusions 11, moving along the grooves 12 of plate 1. The stamp also contains an upper plate 13, on which a wedge 14 is mounted, and 15. The stamp works in the same way. The blank 16 is fed between the poan’s sleeves 3, the clamp 5 and the mandrel 2.P lowering the plate 13 wedge 14 through the clamp 5 and punches 3 wasps estvl dissolved clamping the workpiece 16 to the mandrel 2 and a U-shaped pre-bending. After completion of the preliminary gi, the wedge 15, turning the punches 7 on the hinges 9, lifts the punches 7 above the plane of the plate 1 (before that the punches 7 did not protrude), and the protrusions 11 of the punches 7 fall into the grooves 12. Next, the wedges 15 begin to move the slider 8 along with The pounder with the sleeves 7, carried out the final bending, and the protrusions 11 move along the grooves 12, making the direction of the punches 7. When the upper plate 13 is lifted, the springs 4, 6 and 10 return the punches 3, the pressure 5 and the sliders 8 to the initial position. Making the mandrel profile 2 with undercuts compensates for spring out after bending. The implementation of the invention will improve working conditions while ensuring stable dimensions of the parts. Claim 1. Stamp for bending of parts such as frames containing rigidly mounted-mandrel on the bottom plate and preliminary bending moving relative to it, as well as final bending moving relative to the mandrel and wedges mounted on the top plate with the possibility of interaction with punches, differing in order to improve the working conditions, it is equipped with sliders mounted on the bottom plate with the possibility of movement relative to the mandrel at an angle to the direction of movement Punches are pre-bending and interacting with wedges, each final punch is flexible, connected with a corresponding hinge, the axis of rotation of which is perpendicular to the direction of movement of the slider, and provided with a protrusion, which axis is parallel to the axis of the hinge, sliders and grooves are made in the bottom plate, and the protrusion of each punch is movably disposed in a corresponding slot. 2. A stamp in accordance with claim 1, characterized in that, in order to compensate for the loading of the part after bending, the working surface of the mandrel is made with undercuts. Sources of information taken into account in the examination 1. Z. Mescherin. Sheet stamping. Atlas, M., 1975, p. 79, fig. 171. 2. USSR author's certificate number 585901, cl. B 21 O 22 / 06.05.04.71 (prototype). ten / Phie.1 cm -h -h -f-h at