SU1352584A1 - Switching device - Google Patents

Abstract

The invention relates to control systems and can be used in the directional control of moving nodes of metal-cutting machine tools. The aim of the invention is to simplify the device without reducing the accuracy of its operation. The selection of the stop positions of the object to be controlled is carried out by means of position adjusters with break contacts 13.-13.j, and 17. Position sensors 12 and 12 are path switches having break contacts 14.-14. and two make contacts 15. and 16.. A feature of the device is that when the controlled object is located at any position and the next position is set, the controlled object first comes to the first position, and then to the preset one. Such a solution eliminates the reference position sensor. 2 pe. G8 i (L

Description

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

The aim of the invention is to simplify the device without reducing the accuracy of its operation.

Figure 1 is a schematic diagram of the device, figure 2 is a schematic arrangement of the path switches.

The switching device contains a switching relay with winding 1, closing contacts 2.3 and opening contacts 4 and 5, an intermediate relay with winding 6 and closing contacts 7-9, electromagnets Forward and Back respectively with windings 10 and 11,

also sensors

12,12

P

controllers

positions with spreading contacts 13, where n is the number of positions. The setting positions of the controlled object are selected by setters.

The position sensors 121 are path switches, named "14.

having opening contacts,. The sensor of the first position additionally has two closure contacts 15, and 16, and the setpoint adjuster of the first position is the second opening contact 17,. The windings 1,6,10 and 11, respectively, of the switching relay, the intermediate relay, the Forward and the Back electromagnets, are connected to the first output 18 to connect a power source (not shown) to one of the outputs. To the second terminal 19 for connecting the power source, one of the terminals is connected to a series circuit formed by the opening contacts 14 and connected to the winding circuit 1 of the activation relay, each releasing contact of the position sensor is backed by a corresponding contact of the position setter. The device is controlled from the control button 20.

The device works as follows.

Since the first working position of the possible movement of the machine assembly is the fulfillment of the functions of the initial position, then to fully illustrate the operation of the device, we consider two of its modes.

The first item is set. In this case, the contact 17 of the setpoint adjuster of the first position breaks the power supply circuit of the winding 1 of the turn-on relay, and its friend

15

A contact 13 breaks the circuit, shunting the contact 14 of the sensor of the first position in the power supply circuit of the winding 6 of the intermediate relay.

The control button 20 commands the node to move to the selected first position. In this case, power is supplied to the winding 6 of the intermediate relay, when activated, the contact 8 forms a self-feeding circuit, and the contact 9 forms the supply circuit of the winding 11 of the electromagnet Back.

The movable node moves backward.

When the node arrives at the first position, the first position sensor is turned on and its contact 14 breaks the power circuit of the winding 6 of the intermediate relay. 0 At the same time its contact 9 turns off the winding of the electromagnet 11 Back.

The movable assembly stops at the first position.

Any position is set except the first one.

For example, a third position is selected by the position adjuster. In this case, the contact 14 of the setpoint adjuster of the third position prepares the supply disconnecting circuit 30 or winding 1 of the activation relay. From

the control buttons 20 are commanded to move the mobile unit to the third position. If the position of the movable node does not correspond to the given position and the contact 14 sets it. The third position is closed, power is supplied to the winding 6 of the intermediate relay, when activated, the contact 8 forms a self-feeding circuit, 40 and the contact 9 forms the power supply circuit of the winding 11 of the electromagnet Back. The mobile node moves back to the first position, causing the sensor to trigger the first position. At the same time, 45 its contacts 15, 6 and. The power is supplied to the winding 6 of the intermediate relay, the contact 7 of which supplies power to the winding 1 of the activation relay. When the relay 5Q is activated, its contact 2 switches on the relay to self-supply, contact 5 breaks the power supply circuit of the winding 11 of the electromagnet Back, and contact 3 triggers the operation of the electromagnet. Node begins to move

forward. When the assembly moves forward, the sensor of the first position is released and its contact 16 breaks the power supply circuit of the winding 6 of the intermediate relay.

3135258D4

When the mobile node arrives at the power supply source, through its given position, its sensor closing contact is turned on.

and - the contact I4, j of the sensor 12 is broken by the winding of the second - through the power supply circuit of the winding 1 of the relay connected to the first disconnecting

Nin At the same time, its contact 3 disconnects the switch-on relay contact and the second closure of the electromagnet 10, the forwarding contact of the intermediate relay,

The mobile assembly stops the third closing contact of which

third position. one of the findings is connected to another

The iQ output for connecting the power source is: The device has a smaller number of signals, and the other with a second breaker and path switches, which makes the contact of the switch-on relay, and also simplifies the device like the control button, distinguishing its setting so that, in order to simplify his work. 15 devices without degrading accuracy

his work, sensor first position

Claims (1)

The invention is provided with two additional O1 make contacts, the setting device of the first The switching device, SOD, EP-positions is provided with an additional opening switch-on relay with a two closing contact, and with two and break contacts, breaker break contact one of the conclusions of the winding of which soy-first position is included between the other dinene with the first output for connecting the output winding of the switching relay and power supply perni, intermediate intermediate closing contact with three wiring contacts, 25t of the first position sensor, connected one of the winding terminals of which connected to the first output of the first connection contact of the intermediate relay, no power source, contactors on open contact sensor first positions, each of which has one position is connected in parallel with the break contact, and the spreading contact of the setter is setting contacts of the setters from the second position, and specified parallel the n-th position is connected in series; the chain is connected by one output to another one with the other, as indicated by the post-output winding of the intermediate relay, The optional circuit is connected to one of the connectors via the second additional terminal with the second terminal for connecting the contact of the first position sensor power source, and the other is shunted by a second closing braid by the first closing contact of the auxiliary contact of the switch-on relay - with a button a daily relay, position sensors for controlling the first position, a sequence of sets: position s - with a fuse connected to the first closing position tangling contacts, each of which, the JQ contact of the intermediate relay and the first shunt disconnects contact, respectively, additional closing contact position setting master, twenty-first position shunted electromagnet, winding of the first pull-out relay contact which is connected to the sub-enablers .. ff / 7ec7f