SU1388149A1 - Die for punching holes in hollow parts - Google Patents

Abstract

The invention relates to a tooling for sheet metal forming, in particular for punching holes in 15 to 16 hollow parts. The purpose of the invention is to improve the accuracy of products by providing a coaxial arrangement of punches and dies at the time of punching. For this purpose, a punch with dies 4 and 5, fixed, on the mandrel 2 on the fixed plate 1, and punches 7 and 11, mounted respectively in the (P) 6 sliders and additional P 10, there are means of relative fixation. When lowering the top plate 9, the wedge 8 moves P 6 to the axis of the stamp. Pushers 18 lower the fixing columns 13, located in P 6, into the holes in the fixing sleeves 15 and prevent further movement of P 6. After this, the wedge 12 moves additional P 10, the punches 11 are aligned with the dies 5 and pierce the holes. 1 and.h. tS5 with

Description

The invention relates to a tooling for cold sheet forming, in particular for punching holes in the walls of hollow parts, and can be used in various fields of engineering.

The purpose of the invention is to improve the accuracy of products by ensuring the alignment of the punches and dies in the working position.

The drawing shows a stamp, a longitudinal section (on the left - the original upper position, on the right - the working lower position).

The stamp contains a mandrel 2 placed on the bottom plate 1 for mounting part 3 with dies 4 and 5 for punching holes, spring-loaded sliders 6, filled with penetration punch 7 and interacting with wedges 8 fixed in the top plate 9. On the top plane spring-loaded sliders 6 installed

ten

fixed in the extreme working position, after which the additional slider 10 under the influence of the wedges 12 are moved to the dies 5, and the punch punches 11 punch holes in the walls of the part 3 through the dies 5. During the return stroke of the press slide, the upper plate 9 moves up, the wedge 12 is released additional sliders 10, which, under the action of springs, return to their original non-working position, and the pushers 18 release the fixing columns 13, and they, under the action of the pushers 16 of the buffer device, exit the fixing their sleeves 15 and are mounted on the lower ends of the mirrors schtam- level pa. With the further course of the upper plate 9 upward, the wedge 8 releases spring-loaded sliders 6, which, after release from fixation under the action of springs

the additional spring-loaded polzush-20 returns to the extreme non-working position 10, equipped with breakdown piercements. Part 3 is removed from the work area by us 11 and interacting with a secured stamp, wedges 12 in the upper plate 9 of the stamp 12. In the spring-loaded sliders 6 also, using a stamp ensures fixing columns 13 are mounted with 25 to obtain more accurate parts due to repair sleeves 14, and in the lower engagement of the non-coaxial arrangement of the dimple 1, the fixing sleeves 15 are mounted with the pushors 16 of the buffer device (not shown) located in them. On the upper plate 9, a spring-loaded clamp 17 and the pushers 18 of the fixing columns 13 are installed. Allowed to install several additional sliders on the upper plane of one main slider.

Sones and matrix at the time of punching.

Claims (1)

Invention Formula A punch punch in hollow parts of holes with intersecting axes, preferably located perpendicularly and inclined to the longitudinal axis of the part, comprising a fixed plate on which The stamp works as follows. The mandrel carrying the die is secured and the part 3 is placed on the mandrel 2. rotated with the possibility of radial operation. During the press slide down, the upper displacement of the slider carrying the punches and the movable plate 9 also moves on these sliders from the bottom to the bottom. This wedge 8 acts on the possibility of relative movement in the spring-loaded sliders 6, moving their direction inclined to the pressure axis to the dies 4, and the spring-loaded clamp 1740 additional sliders also bearing the part 3 against the surface of the mandrel and 2. punches, as well as containing a mechanism. With the further movement of the spring-loaded movement of the sliders and the additional sliders 6, they reach the extreme working widths, made in the form of wedges, of which position, and being punched on the movable plate, the holes in the the walls of the part 3 are penetrative, in order to increase the precision of the punches 7 on the dies 4. After the pre- and products, due to ensuring the coaxiality of the slider 6 of the extreme working punches and dies, it is provided with a wedge 8 moving relative latching of the punch down, slides along the vertical plane of the new and dies in the working position of the sliders 6, without moving them in the form of columns, the size of the horizontal plane. With further movement in the sliders with the possibility of moving the movable plate 9 downwardly to the fic- tion in a direction parallel to The spacers 13, the slides in the guide sleeves 14, enter the fixing sleeves 15 under the influence of the followers 18, while the followers 16 of the buffer device are lowered. Spring loaded sliders 6 the pressure axis of the stamp, the pushers mounted in the movable plate with the possibility of their columns interacting with their ends, and the locking sleeves located in the fixed plate. 0 fixed in the extreme working position, after which the additional slider 10 under the influence of the wedges 12 are moved to the dies 5, and the punch punches 11 punch holes in the walls of the part 3 through the dies 5. During the return stroke of the press slide, the upper plate 9 moves up, the wedge 12 is released additional sliders 10, which, under the action of springs, return to their original non-working position, and the pushers 18 release the fixing columns 13, and they, under the action of the pushers 16 of the buffer device, exit the fixing their sleeves 15 and are mounted on the lower ends of the mirrors schtam- level pa. With the further course of the upper plate 9 upward, the wedge 8 releases spring-loaded sliders 6, which, after release from fixation under the action of springs 0 return to the dead state. The part 3 is removed from the working area of the stamp. Using the stamp provides 5 more accurate parts by eliminating the misalignment of the punches and die at the time of punching. Invention Formula the pressure axis of the stamp, the pushers mounted in the movable plate with the possibility of their columns interacting with their ends, and the locking sleeves located in the fixed plate.