SU1303225A1 - Method and apparatus for manufacturing parts from hollow billet - Google Patents

Abstract

The invention relates to the field of metal forming, in particular for punching holes in the side surface of tubular blanks. The invention makes it possible to increase productivity by automating the installation of the workpiece on the mandrel (0) and the removal of the finished part from 0 to the container. Setting the workpiece 1 on O and removing it after punching the holes occur simultaneously. The preform 1 is set on O between the punches (P), which are then brought into opposite direction towards 0. As a result of the interaction of P with O, holes are formed in the side surface of the preform 1. O is then rotated through an angle of 90 °. in the vertical plane. As a result, the tubular part O is placed between the loading and unloading positions. Then, an additional reciprocating motion is reported due to interaction with the pushers. The latter are made in the form of power cylinders located on both sides of the holders 12. The forward movement of O is carried out in the direction of the loading position, in the process of translational movement O of the finished part is kept from moving together with O. As a result, the part is removed from O into the container, and the new preform is set to O. In the process of returning, O is set to its original position. Then, a rotation of & through 90 ° is carried out. driven periodically turning. The productivity of the process is enhanced by the simultaneous installation of the workpiece and the removal of the finished product. 3 hp f-ly, 8 ill. "5 (О С со о со o tsD СП

Description

The invention relates to the processing of metals by pressure.

The aim of the invention is to increase productivity by automating the installation of the workpiece and removing the finished part from the mandrel.

FIG. 1 shows the blank on the sill in the position preceding its processing by punches, top view; in fig. 2 is a view A of FIG. one; in fig. 3 - position of the tubular part after rotation of the mandrel by 90 °, top view; in fig. 4 shows the position of the mandrel after removing the tubular part and installing a new billet, top view; in fig. 5 shows the position of the mandrel after its return movement, top view; in fig. 6 - stamp, top view; in fig. 7 is a section BB in FIG. 6; in fig. 8 is a sectional view BB in FIG. 6

A method of manufacturing hollow parts includes placing the workpiece 1 on the mandrel 2, then deforming, in particular punching holes on the side surface, the workpiece 1 by the punches 3 and 4, turning the mandrel 2 90 ° in the vertical plane after the work of the workpiece is completed by the said punches, and also an additional reciprocating movement of the mandrel 2 after it is rotated 90 ° to install the new blank 1 on the mandrel 2 and remove the finished part 5 from the mandrel 2.

The method is carried out as follows.

The workpiece i is set on the mandrel 2 between the punches 3 and 4, which then lead in a counter-movement towards the mandrel 2. As a result of the interaction of the punches 3 and 4 with the mandrel 2, holes 6 and 7 are formed in the side surface of the workpiece 1. turn the mandrel 2 90 in the vertical plane. As a result, the mandrel 2 with the tubular part 5 is placed between the loading positions 8 and the discharge positions 9.

Then, the mandrel 2 is reported to have an additional reciprocating motion, with the translational motion of the mandrel 2 being carried out in the direction of the loading position 8 and with the stroke length, pre-rotation, to it the length of part 5. During the translational motion of the mandrel 2, the tubular part 5 is kept from moving together with the mandrel 2, as a result of which the part 5 is removed from oravraki 2 into the container, and a new workpiece 1 is placed on the mandrel 2. In the process of returning the mandrel 2 is set to its original position, and then rotate it and 90 ° to set the workpiece 1 between the punches 3 and 4, after which the process cycle is repeated.

The stamp contains a cylindrical mandrel 2, interacting with mandrel 2 punches 3 and 4, driven by wedges 10, clamp 11 of workpiece 1, interchangeable holder 12 equipped with a periodic rotation drive, as well as pushers 13 and 14 interacting with mandrel 2. Punches 3 and 4 mounted with the possibility of oncoming movement towards the mandrel 2 in interchangeable housings 15 mounted on

 the upper plane of the fixed part 16 of the stamp and is spring-loaded to the housings 15 by means of return springs 17, while the wedge 10 interacting with the shanks of the said punches are mounted on

j ram 18 press.

The insert 12 is located under the punches 3 and 4 has a polyhedron shape with a through central hole 19 in which a cylindrical mandrel 2 is installed, fixed relative to the holder 12 by means of spring-loaded springs 20 clamps 21, which fall into the recesses made on the lateral surface of the mandrel 2 To provide the mandrel 2 with another dimension of tubular billets, the yoke 12 comprises a hollow body 22 with bearing pins 23 and 24. The hollow body 22 is mounted in the fixed part 16 of the die under the bearings 15 na. kah 25.

The yoke 12 is equipped with a pedal rotation actuator including a disk 26 with sockets 27, rigidly connected to a pin 24, spring-loaded to the disk 26 by a spring 28, a retainer 29 with a shank 30 having a wedge shape falling into the sockets 27, which are located relative to

 at an angle of 90, a friction clutch, one of the half couplings 31 of which is rigidly connected to the trunnion 24, and the other (32) is fixed at 110MOP1I 11 faces on the driving shaft 33, carrying the cam 34, interacting with the wedge-shaped shank 30 of the fixture 29, and also an asterisk 35 of the chain drive associated with a gearbox driven by an electric motor (not shown). The adjustment of the magnitude of the torque transmitted by the MUFF. Is made by changing the stiffness of the gear 36 by the nut 37.

five

The interaction with the mandrel 2 pushers 13 and 14 are made in the form of power cylinders located on either side of the sleeve 12 perpendicular to its longitudinal axis 38 on the fixed part 16

0 uiTa.Mna with the possibility of adjusting the movement relative to the yoke 12 using wigggs 39 to 40, and for adjusting the stroke (the currents 41 and 42 are provided with screws 43 and 44, with 1 currents 41 and 42 being adjustable from 5 to the carrier nopiiuui 45 due to a threaded joint 46, which is generally necessary for the changeover of the stamp to another size of the blanks.

The stamp is also provided with a billet magazine 1, made in the form of an inclined tray 47 fixed on the lower part 6 of the stamp between the pushers 13 and the yoke 12, while in the wall of the tray 47 there is a hole for the passage of the rod 41 equipped with a protrusion 48 it with the workpiece 1. The holder 12 is equipped with a puller 49, and on the mandrel 2 are made longitudinal grooves 50 for the stripper to enter.

To control the pushers 13 and 14, a contactless control unit is provided in the stamp, the toothed screen 51 of which is fixed on the drive shaft 33, and the case 52 with sensors on the fixed part 16 of the stamp.

The stamp works as follows.

In the initial position, the mandrel 2 with the workpiece 1 is between the punches 3 and 4 and fixed relative to the fixture 29, which interacts with the disk 26, the end of the rod 41 of the pusher 13 is in the hole of the tray 47, and the rod 42 of the pusher 14 is recessed in the cylinder body.

When the press is turned on, the slider 18 makes a working stroke, during which the clamp 11 presses the workpiece 1 to the holder 12, and the punches 3 and 4 under the action of the wedges moved by the slide 18 18 make a counter-movement in the direction of the mandrel 2 and carry out the technological operation of punching holes 6 and 7 on the side surface of the workpiece 1.

At the same time as the press is turned on, the drive shaft 33 is rotated, as well as the cam 34 and the toothed screen 51 of the control apparatus mounted on the letter. The cam 34 after the end of the technological operation and the stop of the slider 18 presses the Novid shank 30 of the latch 29 and removes the next year from the slot 27 of the disk 26, and the slippage of the coupling halves 31 and 32 stops and the holder 12 is rotated by 90. Since the retainer 29 sinks into the next slot 27, the alignment 2 is fixed in a position where its longitudinal axis is coaxial to the longitudinal axis of the rods 41 and 42. Due to the slippage of the coupling halves 3 and 32, the drive shaft 33 continues its rotation and the gear screen 53 enters Start into the range of the sensor that gives the command to turn on the pusher 14, and then the sensor that gives KOMai to turn on the pusher 15 (the sensors are not shown).

When the pusher 14 is turned on, the rod 42 is set in motion, which, interacting with the end of the mandrel 2, transmits the latter to the left relative to the fixed casing 12 and the fixed tubular part 5, which is kept from moving by the pickup 49, while the right part of the mandrel 2 leaves the holes

tubular part 5, and the left enters the hole-tubular workpiece 1. Thus, the removal of the tubular part 5 from the mandrel 2 to the rod 42 and the installation of the new workpiece 1 to the mandrel 2.

Upon completion of the described movement of the mandrel 2, the commander sends the command to move the rod 41 of the pusher 13 in the direction of the yoke 12 and the rod 42 of the pusher 14 to its original position. The rod 41 bearing the protrusion 48 acts on the mandrel 2 and the workpiece 1 and alternates the mandrel - 2 with the blank 1 to the right until the latches 21 are not pressed into the recesses made on the side surface of the mandrel, and the rod 42 moves the tubular piece 5 to an abutment with the housing of the pusher 14, as a result of which the part collides into the container.

After returning IHTOKOB 41 and 42. pushers 13 and 14 to the initial position of the Ku- / iaMOK 34 BiiOBb presses the wedge-shaped shank 30 of the clamp 29 and removes the latter from the slot 27 of the disk 26, as a result of which the mandrel 2 rotates

with the workpiece I on. 90 and its fixation between the punches 3 and 4, after which the cycle {work and run is repeated.

Form of Invention

1. The method of making parts from a hollow billet, 15k, 1much the installation of the workpiece f .a mandrel, the subsequent deformation of the workpiece by punching holes in its walls and removing the part from the mandrel, which differs from that. what. for the purpose of new production, the installation of the workpiece on the mandrel and with its detached part is performed simultaneously.

2. Device parts, 1 manufacturing parts

of no. ioii billet containing a mandrel installed in a non-1; OD1) part of the stamp, positioned perpendicular to the axis of the mandrel poins, mounted with the ability to interact with pressure

Kli .. m, mounted on the movable part of the stamp, as well as face clamping of the workpiece. OT.ui-iuK) i: 4i i C} in that it is abbreviated as a bond. Yuma iiHiiOpoTa mandrel in p.osposposp. roho; 1 pressure through the axis of pressure, made-H1) 1m in vi. clips with nanijiaMn on the side ponorichi placed in the non-movable part, and spring-loaded clamps ntj 1) zsn, 1I mandrel when turning. welcome; i OBiipora node. kinematically sv - with o; uic5ii from trunnions, two pushers 1 lp. lacrio i-, on both sides of the mandrel with lt interaction with its TC pLia. -i;:. the axes of which are perpendicular to ocii pressure and lie in flat

the bones of rotation of the mandrel, while the mandrel is installed in the cage with the possibility of reciprocating relative to it movement.

3. The device according to PP. 1 and 2, characterized in that the pushers are mounted

with the possibility of adjusting the movement relative to the yoke.

4. The device according to PP. 1-3, characterized in that the yoke is made in the form of a hollow body and an insert placed concentrically with a through hole under the mandrel.

Swivel plane

Fig

Type A

FIG. g

FIG. five

FIG. isFig. five

Tv

-

"/ 7 /

Bs

76

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Claims (5)

Claim 1. A method of manufacturing parts from a hollow workpiece, including installing the workpiece on the mandrel, subsequent deformation of the workpiece by punching holes in its walls and removing the part from the mandrel, characterized in that. that, in order to increase productivity, installation of the workpiece on the mandrel and removal of the stamped part are carried out in time. 2. A device for manufacturing parts from a hollow billet containing a mandrel mounted in the stationary part of the die, punches arranged perpendicular to the axis of the mandrel installed to interact with pressure wedges mounted on the movable part of the die, as well as the end clamp of the workpiece, characterized in that it is provided the node of rotation of the mandrel in the plane passing through the axis of pressure, made in the form of a hollow cage with pins on the side surface, located in the fixed part, and spring-loaded fix by the mandrel position during rotation, the drive of the rotation unit, kinematically connected to one of the pins, two pushers. located on both sides of the mandrel with the possibility of interaction with its ends, the axes of which are perpendicular to the pressure axis and lie in the plane of rotation of the mandrel, while the mandrel is mounted in a holder with the possibility of reciprocating relative to it. 3. The device according to paragraphs. 1 and 2, characterized in that the pushers are installed with the possibility of adjusting movement relative to the cage. 4. The device according to paragraphs. 1-3, characterized in that the clip is made in the form of a hollow body and placed concentrically with an insert with a through hole for the mandrel. Turning plane Type A Fi g. 1 FIG. 2. 5 9 FIG. 3 FIG. A1303225 Direction Multiple Moving Frames 7 ----- and 1 1 ! b