SU1691139A1 - System for controlling coordinate-punching press - Google Patents

Abstract

The invention relates to mechanical engineering, in particular to press-forging equipment, and can be used to control coordinate-punch presses with programmed control. The goal is to expand technological capabilities. The system provides control of the coordinate-punching press at workpiece sizes larger than the working stroke of the coordinate table by intercepting the workpiece at the working position while fixing its position by pressing and sliding the press at its bottom dead center, which eliminates the time lost for positioning the workpiece for interception and by clamping the workpiece at one point reduces the effect of the warping of the sheet stock on the accuracy of the product, 2 or less

Description

The invention relates to mechanical engineering, in particular to press-forging equipment, and can be used for clearing with coordinate-punch presses with programmed control.

The purpose of the invention is to expand the technological capabilities of the press.

FIG. 1 is a diagram of a control punch press system; in fig. 2 - working bodies of the press.

The control system of the punching press contains a movement task unit 1, one output of which is connected to the input of the follower drive control unit 2 connected in series with the follower drive 3 of the rfpecca coordinate table 4 and the coordinate table movement sensor 5. At the same time, the second output of the control unit 2 of the servo drive is connected to the input of the slider enablement unit 6, the output of which is connected to the slider 7, a punch 8 and a puller-clamp 9 are placed on the α-teater. The position of the slider 7 at the bottom dead center during punching of the hole in the workpiece 10 is monitored by a position sensor 11, the output of which is connected to the second input of the slider inclusion unit 6, the third output of which is connected to the input of the tick-gripper turning-on unit 12, the first output of which is connected to the jaw grips 13 of the workpiece with jaws 14, the second output nen to the input unit specifying the movement 1, and the third output - to the input unit 6 incorporating .polzuna. When punching the hole, the workpiece 10 is under the punch on the die 15.

The control system of the press works as follows.

On a signal from block 1, the assignment of displacement to block 12

Yu

with y

x "then, the workpiece is clamped in the jaws 14 of the tongs 13, then a clamping signal from the output of the block 12 for turning on the tongs taken at the input of the movement task unit 1 sends a signal for moving the workpiece 10 for h rns from the second output of this block ebiphi hole. This signal is fed to the input of block 2 of the follow-up drive control. According to the signals from the control unit 2 of the follower drive, with the aid of the actuator 3, the coordinate table 4 is moved with the tongs 13 by the workpiece 10,

After the end of the movement from the second output of this block, a command is sent to the slide move to block 6 of switching on the slide, Slider 7 moves down, while the stripper 9 presses the workpiece 10 to the matrix 5 and the punch 8 punches the hole in the workpiece 10, then the slide 7 makes the upstroke, while the punch 8 exits the material of the workpiece 10, the puller-clamp 9 releases the workpiece 10. Thereafter, from the output of the block 8 for switching on the slide, the command that allows further movement of the workpiece and the cycle processing is repeated.

For processing workpieces that are larger than the working stroke of the coordinate table, as well as for processing the sheet in dead zones, it is necessary to intercept the workpiece.

When intercepting, the order of work of the working bodies of the press varies.

When punching the last hole in the workpiece 10 before intercepting the signal from the sensor 11 in the lower dead point, the block 6 switches on the slider stops-h, the slider 7 is in this position. When the punch 8 is in the workpiece material / l 10 and prevents its linear displacements, and the puller-clamp 9 presses the workpiece 10 to the surface of the matrix 15 and prevents its rotational displacement. From the third output of the block 6 for switching on the slide to the second input of the block 12 for activating the claw clutches, a command is applied to unclamp the grips 13. The claws 13 open and the jaws 14 release the workpiece 10. After unclamping the claws, as indicated by the command from the second output of the block 12, the grippers to the third input of the slider switching unit b, from the second output of the tick-on switch-on unit 12 to the third input of the slider enablement unit 6, from the second output of the slider starting unit b to the third input of the follower drive control unit 2 a coma is fed NDA for removal of tick-borne grips 13 from the fixed workpiece 10. for example, by 1 ... 2 mm, their movement along the edge and their approach

to the workpiece. In this case, the elements of the control system 3 and 5 and the press 4 operate as described previously. After supplying the clamp grippers to the workpiece from the control unit 2 of the servo-driven drive, the slider is switched on via the slider switch-on unit 6 to the input of the clamp-on switch-on unit 12 to signal the end of movement of the coordinate table 4 with the clamp grips 13.

Block 12 include tick captures

gives the command to clamp the tongs 13 and sends the corresponding signal to the third input of the block 6 for switching on the slide; this block gives the command to raise the slide 7 up. When this punch 8 comes out of

the material of the workpiece 10, and the puller-clamp 9 releases the workpiece. At this point, the interception of the workpiece is completed, with no special mechanism for interception. Further work of the press and control system is performed in the specified sequence.

Introduction to the system of control of the coordinate-piercing press of the sensor for the position of the press ram at the bottom dead center

allows you to fix the workpiece for interception in the working position, which eliminates the loss of time for positioning the workpiece for interception, reduces the time for the preparation of control programs for the CNC

press, which ultimately leads to improved performance of the press.

In addition, the technological capabilities of the press are expanding, since the interception process does not impose

restrictions on the minimum size of the workpiece, which allows you to enter the mode of interception on such types of sheet-stamping equipment, where it has not previously been used, for example, on single-stage presses

for CNC punching.

The accuracy of the part is increased as the clamping of the blank for the nape grip in one place reduces the effect (warping of the sheet blank) on the precision of the product.

Claims (1)

Claims The control system of the coordinate-piercing press, comprising successively connected displacement motion unit, control unit for follow-up drive and follower drive for feeding the coordinate table, sensor for displacing the coordinate table connected to the second input of the control unit for the following drive, third input and second the output of which is associated respectively with the first output and input of a slider inclusion unit, and a tick-gripper activation unit, the first input and output connected respectively to the second The output and input of the motion setting unit, characterized in that, in order to expand technological capabilities, the control system is equipped with a slider position sensor at the bottom dead center, the output of which is connected to the second input of the creep switching unit, the third input and output of the last second are connected respectively to the third output and the second input block tick captures. Fm.1 Thebes. I