SU1465260A1 - Device for controlling power unit of metal-cutting machine - Google Patents

Abstract

The invention relates to control systems and can be used in the management of metal assemblies. machine tools. The purpose of the invention is to increase the reliability of operation of the device due to the precise fixation of the initial position of the node. The device contains electromagnets Forward and Back with windings 1 and 2, a time relay with winding 3, end switches of intermediate initial position and end of processing. The time relay is turned on after the operation of the intermediate relays with windings 9 and 12. 2 Il.

Description

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1U65260

The invention relates to control systems and can be used in the management of machine tools.

The aim of the invention is to increase by; 1 the frequency of operation of the device by increasing the recovery time of the time relay.

Fig. 1 is an electrical diagram of the device proposed in Fig. 2, a sequence diagram of its operation.

The control unit of the power unit of the cutting machine contains electromagnets Forward and Back respectively with windings 1 and 2, barely time with winding 3, opening contact 4 and closing contact 5, first intermediate relay with winding 6, closing contacts 7 and 8, second intermediate relay with winding 9 and the closing contacts 10 and 11 and the third intermediate relay with winding 2f the closing contact 13 and the opening contacts 14 and 15. The device is controlled from the 16 Forward button and the 17 Back button,

The device also contains an end switch 18 of the intermediate reference position with the opening contact 19 and the end switch 20 of the end of processing with the opening contact 21 and the closing 22. The switching of the end switch 18 is activated at the point to which the power node returns at the intermediate retraction.

The device works as follows.

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There are a lot of recorder screens and both of them.

By pressing the 16 Forward button, a command is issued to start the automatic cycle of operation of the power node, in the considered example the power table of the machine.

The first intermediate relay with winding 6 switches on and becomes self-powered, contact 8 of which supplies power to the winding 1 of the Forward electromagnet supplying the power table. The processing time for each pass of the tool is monitored by a time relay with winding 3. When the intermediate switch 18 of the intermediate initial position is released, its contact 19 forms the power supply circuit of the winding 3 time relays, and the electromagnet turns off after a delay

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with coil 1, power is supplied to windings 9 and 12 of the second and third intermediate relays and winding 2 of the electromagnet Back. The power is removed from the winding of the 3 time relays.

When the back electromagnet is turned on, an intermediate removal of the power table to the point of operation of the end switch 18 is made. When it is activated, the power is removed from the windings 9, 12 intermediate relays and the winding 2 of the electromagnet Back. Power is supplied to the winding 1 of the electromagnet Forward. The movement of the power table is again carried out.

This is repeated until, at the end of processing, the end switch 20 of the processing end is activated. Its contact 21 turns off the winding 6 of the first intermediate relay, the contact 8 of which breaks the power supply circuit of the winding 1 of the electromagnet Forward, and the contact 22 energizes the winding 2 of the electromagnet Back.

The device returns to its original position.

Claims (1)

Invention Formula 0 five 0 five The control unit of the power knot of the metal-cutting machine, containing electromagnets Forward and Backward time relay with short-circuit and disconnecting contacts, the first intermediate relay with two closing contacts, the end switches of the intermediate original position and end processing, the Forward and Back buttons and the power source, one from the terminals of the winding of the electromagnet Forward is connected to the opening contact of the LE time, one of the terminals of the winding of which is connected to the breaker, the tact of the end switch intermediate the initial position, characterized in that, in order to increase operational reliability, the device is equipped with a second intermediate relay with two closing contacts l and a third intermediate relay with opening and one closing contacts, one of the terminals of the second intermediate relay winding through the closing contact bypass bypass relay the closing contact of the second intermediate relay, and one of the terminals of the winding of the third intermediate relay, through the second closing contact of the second intermediate relay, are connected to the common connection point of the disconnecting contacts of the intermediate switch of the initial switch 1465260 the third intermediate relay connected in series with the winding of the time relay, the closing contact of the third intermediate relay is connected in series with the winding of the electromagnet Back, and the second break contact is connected with the winding of the electromagnet Forward, BL SUSM 18 Air defense T П5П IN FIG. 2 RP RL go