SU1318327A1 - Arrangement for deep drawing - Google Patents

Abstract

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for deep-drawing with counterpressure of hollow sheet metal products. The purpose of the invention is to reduce the labor intensity by eliminating readjustments when changing the mode of stretching. When the additional plunger 8 is moved downwards, the working fluid from cavity 6 flows into cavity 7 through the grooves, as a result of which the same pressure is established in cavities 6 and 7 (L o o So 00 1C

Description

and plunger 8 is stopped. When the chamber 1 is moved downward, the support 3 presses against the seal 5, as a result of which the cavities 6 and 7 are separated and the matrix 4 also moves downwards. At the same time, the volume of fluid under the workpiece 15 is 1shapped, and the pressure increases - with and the workpiece 15 is pressed into the point of the die 4. On the base 10, the working plunger 9 is rigidly fixed. Between the die 4 and the working plunger 9 are set

The invention relates to the processing of metals by pressure and relates to devices for deep-drawing with a back pressure of hollow sheet metal parts.

The purpose of the invention is to reduce the labor intensity by eliminating readjustments when drawing various parts, requiring different modes.

 Fig. 1 shows a device, a longitudinal section (to the left in the initial position, to the right at the final moment of stretching); 2 is a section A-A in FIG. one .

The device contains a camera 1 with a working channel 2. Inside the channel 2 there is an annular support 3. In channel 2 of camera 1, a matrix 4 is installed with a seal 5, dividing channel 2 into two cavities 6 and 7. An additional plunger 8 is mounted in cavity 6 On the opposite side From the additional plunger 8- in the cavity 7 a working plunger 9 is installed, fixed on the base 10. The matrix 4 is placed in the cavity 7 of the chamber 1 between the annular support 3 and the working plunger 9. An elastic element is mounted to the working plunger 9 11 squeeze with an outer diameter equal to 0.9-0.9 of the diameter of the working channel 2. Camera 1 is mounted for movement along the axis of the working plunger 9 and connected to the crosspiece 12 of the press (not shown). The seal 5 is made with longitudinal grooves 13 on the outer side surface that perform the function of drainage holes.

The elastic element is introduced. The chamber 1 is adapted for axial movement. The matrix 4 is located between the annular support 3 and the working plunger 9. Seal 5 is made with longitudinal grooves on the outer side surface and is located on the edge of the matrix 4 facing the annular support 3 on the side of the annular support 3 there is an additional 8C plunger 6 on the side of the annular support 3 camera 1 reported pressure gauge 14.

The device works as follows.

 Camera 1 is in its highest position. Between the matrix 4 and the elastic element 11 establish a flat billet 15.

An additional force is applied to the additional plunger 8 when JO, for example, from the side of the pump (not shown) through a hydraulic multiplier (not shown). The plunger 8 begins to move downward, compressing the working fluid and creating a hydraulic pressure. When moving the plunger 8, the liquid from the cavity 6 freely flows into the cavity 7 through the drainage grooves 13. In both cavities 6 and 7 of channel 2 and 20 of measure 1, the same pressure is established. After creating a hydraulic pressure equal to the required back pressure, as judged by the readings of the manometer 14, the plunger 8

 stop and move the yoke 12, which moves the camera 1 down. When the camera 1 moves down, the annular support 3 of the channel 2 presses against the seal end 5, as a result of which cavities 6 and 7 are separated. When the camera 1 goes down further, the annular support 3 goes through seal 5 presses on the matrix 4 ,. compressing the elastic element 11. and moving the matrix 35 tsu 4 with the workpiece 15 down. The volume of the working fluid in the cavity of the working channel under the workpiece 15 is reduced, the hydraulic pressure increases and the workpiece 15 under its

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the impact is inserted into the point of the matrix 4. After that, the chamber 1 of the crosspiece 12 returns to its original position and the finished part 16 obtained from the workpiece 15 is removed from the chamber 1,

The supply of the device with an additional plunger and the installation of the chamber with the possibility of axial movement allows to create any pressure in both channel cavities, i.e. to provide any extraction conditions without any readjustment of the device and reduce labor intensity during operation.

Claims (1)

Formula Eteni A device for deep-drawing, comprising a base, a chamber on the base with an annular support in the working channel, located on 74 an annular support matrix with compaction and a working plunger installed in the working channel on the matrix side, characterized in that, in order to reduce labor input by eliminating changeovers when changing the draw mode, it is equipped with an additional plunger located in the working channel of the chamber on the ring support side and the working channel of the camera between the working plunger and the matrix annular elastic element, while the working plunger is rigidly fixed on the base, the chamber is mounted for movement in the axial direction, and the seal of the die is complete with longitudinal grooves on the outer side surface and is located on the face of the die facing the annular support. Editor S.Patrusheva Compiled by V. Muslimov Tehred M. Khodanych., / 2456/8 Circulation 732 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Production and printing company, Uzhgorod, Projecto st., 4 FIG 2 Proofreader S. Shekmar