SU1101313A1 - Press tool for cutting holes in hollow articles - Google Patents

Description

The invention relates to the processing of metals by pressure, in particular to tooling, and can be used for treating floor products in various fields of engineering.

The closest solution to the proposed combination of aggregate features and the effect achieved is a die for hollow holes in hollow articles, comprising a punch, a puller clamp mounted on a movable plate, a matrix and a workpiece clamp fixed on the fixed plate, and a mandrel with support 1 . .

However, for the well-known test, there is insufficient reliability due to the fact that the mandrel is mounted on a single support.

The purpose of the invention is to increase the reliability of the stamp.

The goal is achieved by the fact that a die for cutting holes in hollow articles, containing a punch, a clamper, a matrix mounted on a movable plate and a workpiece clamp fixed on a fixed plate and a mandrel with a support, is provided with an additional support fixed on the movable plate rotatably about an axis parallel to the fixed plate, and fixation in the initial and working positions, and the mechanism of its rotation and fixation, having a support rigidly mounted on the movable plate.

At that, the mechanism of rotation and fixation of the additional Support is made in the form of a movable plate located in the side surface parallel to the mandrel of the rectangular groove with undercuts on its lateral faces, two grooves made in the additional support parallel to the mandrel, a groove made in the additional support perpendicular straight to its grooves, two spring-loaded one relative to the other crawler with handles, placed in the groove with the possibility of moving in the grooves of the additional support and undercuts of the rectangular groove, two liquor is mounted on the movable plate to cooperate with the levers a dipper polzushok.

Figure 1 shows the proposed stamp, section, General view; 2 is the same plan view; on fig.Z - view A on (1) ig.1; figure 4 - section bb in figure 1; FIG. 5 is a section along the line BB of FIG. 2D in Fig. 7 is a view D in Fig. 3.

The stamp comprises an upper plate 1, on the side edge of which a rectangular through window 2 is made with a base 3 and edges 4. A horizontal groove 5 is made from the lower part of the base 3, the lateral faces of which are a continuation of the edges 4. Through the entire length of the edges 4 there are two opposite horizontal grooves b with holes 7 (Fig. 1, 3). The upper part of the base 3 of the window 2 is rigidly fixed to the brackets 8 with springs 9. To the top plate 1, the puller 10 is movably fixed, the carrier 11 is rigidly fixed, and the pop-stand 12. The stand 12 is made with a square hole 13, oval holes 14 and perpendicular to them by a circular through hole 15, into which the sliders 16 are inserted with the spring 17. The oval holes 14 are screwed into the sliders 16 into the oval holes 14. The support 12 is mounted by means of the slide 16 in the grooves 6 of the window 2 with the possibility of rotation from horizontal position to vertical at an angle of 90 ° and reciprocating movement thereon in a horizontal groove 4 of the top plate 1.

The mandrel 19 is made of round cross-section with the flips, one of which is combined with the piercing punches 20 and rigidly fixed at one end in support 11 and the other end has a square shank.

On the bottom plate 21 fixed matrix 22, the side retainer 23 of the product 24.

The upper and lower parts of the stamp are centered relative to each other by guiding elements 25.

The stamp operates as follows. In the initial position, the upper portion of the stamp is in the upper position. Bearing 12 is held in a horizontal position with knobs 16 in the springs 9. The puller 10 is also in the upper position. The perforated blank 24 is put on the mandrel 19 all the way into the support I.

The support 12 leads out of the handles 18; the syringe from the fixing springs 9 and rotates into a vertical position through an angle of 90 ° through the slider 16 inserted into the grooves 6 of the window 2 of the upper plate 1. Next, beyond the handles 18, the support 12 moves along the grooves 6 in the horizontal the groove 5 of the upper plate 1 and its square hole 13 is put on the free square shank of the mandrel 19. In this case, the sliders 16 are fixed by spring 17 into the holes 7 of the grooves 6, and the support 12 in the upper part is covered by the horizontal groove 5 of the upper plate 1.

As the press ram moves downward, the top plate 1 together with the product 24 located on the mandrel 19, between

supports 11 and 12 also go down. When the product 24 interacts with the die 22 fixed on the bottom plate 21, the gaps between the product 24 and the stripper 10 are selected, then between the product and the piercing punches 20. The punches 20 pierce a number of holes in the workpiece.

When the press ram moves upward, the pincer 10 removes the product 24 from the punch 20. The product 24 is rotated, fixed with a side spring licker 23 in the groove in the perforated line of grooves, after which the next row of grooves is punched.

After completing the punching of four rows of grooves, the finished product is removed from the die. For this, the product is released from the fixation by the side lock 23. By means of the handle 18, the oval holes 14 are compressed

: spring 17, and the locking rusks are withdrawn from the fixing holes 7 and along the grooves b of the horizontal groove 5 and window 2 of the upper plate 1, the support 12 cuts back in the opposite direction, releasing the square shank of the mandrel 19. Next, the support 12 by the handles 18 rotates to a horizontal position at an angle of 90 ° to be fixed in the springs 9.

0

The support 12 is held in a horizontal position on the sliders 16 in the grooves b and by the handles 18 in the fastening springs.

The perforated product is removed from the treatment area.

five

The process is repeated.

The proposed stamp has increased reliability due to the fact that the mandrel during the working stroke

0 punches are supported on two supports.

Visa

Fig.Z

FIG.

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FIG. five

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Baal

Fig 7

Claims (2)

1. A STAMP FOR CUTTING HOLES IN HOLLOW PRODUCTS, comprising a punch, a clamp-puller mounted on a movable plate, a die and a workpiece clamp secured to a fixed plate, and a mandrel with a support, characterized in that, in order to increase reliability, it is equipped with an additional a support mounted on a movable plate with the possibility of rotation relative to those, and Fixations in the initial and working positions, and the mechanism of its rotation and Fixation, the existing support is rigidly fixed on the movable plate. 2. The stamp according to claim 1, on the basis of the fact that the rotation and fixing mechanism of the additional support is made in the form of a rectangular groove with undercuts on its side faces, two grooves located in the side surface of the movable plate parallel to the mandrel, performed in parallel to further support the mandrel, _f groove formed in the additional support perpendicularly to the grooves, two spring-loaded relative to one another polzushek with handles placed in the groove to be movable in the support and undercut slots rectangularly of the groove, two latches mounted on the movable plate to engage with handles poleuosi parallel fixed pli- ils. 20 24 22 Fig / SU „„ 1101313