CN201098739Y

CN201098739Y - Lathe idling automatic stopping electricity-saving device

Info

Publication number: CN201098739Y
Application number: CNU2008200762912U
Authority: CN
Inventors: 梁磊
Original assignee: Individual
Current assignee: Individual
Priority date: 2008-02-13
Filing date: 2008-02-13
Publication date: 2008-08-13
Anticipated expiration: 2018-02-13

Abstract

The utility model relates to an automatic no-load lathe stop power saving device, which comprises a start button QA, an AC contactor KJ and a stop button TA, which are serially connected in a motor control circuit. The normally-open contact KJ<1> of the AC contactor KJ is serially connected in a main AC circuit connected with a motor M, the normally-open contact KJ<2> of the AC contactor KJ is parallelly connected with both ends of the start button QA, a serial branch consisting of a travel switch SA and a time relay KT is also connected with a motor control circuit, the branch is parallelly connected with both ends of a circuit connected with an AC contactor KJ coil and the normally-open contact KT<2> of the time relay, a link contact group of the start button QA is parallelly connected with both ends of the travel switch SA, and the travel switch SA is arranged at a stop position on the inner end of a lathe operation handle. The automatic no-load lathe stop power saving device can obviate long-time no-load operation of a lathe and provide an effective measure for energy conservation and consumption reduction.

Description

The unloaded autostop battery saving arrangement of lathe

Technical field

The utility model relates to a kind of Electrical Control of Machinery Tools mechanism, the unloaded autostop battery saving arrangement of specifically a kind of lathe.

Background technology

In the circuit for controlling motor of lathe, all be connected to control assemblies such as start button, stop button and A.C. contactor, the main contacts of A.C. contactor is serially connected in the main alternating current circuit of joining with motor.When the unlatching lathe carries out the machined operation, press start button earlier, connect the AC power of motor, make electric motor starting, and then by diverse location regulation and control to control crank, make mechanical transmission mechanism realize the different kinds of drive, so that different actions such as the driving shaft of lathe is realized just changeing, counter-rotating or stalls.

When the operator needs of short duration parking in the process of operation lathe, generally do not press stop button, make the motor stall, but habitually control crank is placed the position of " STOP ", make the driving shaft stall, leave lathe then and carry out other the operation or the rest in a moment.Though and the driving shaft of lathe has stopped running at this moment, motor power is still being connected, so this moment, motor was just kept no-load running.If it is longer that the operator is interrupted the time of work, will make motor waste a large amount of electric energy in the no-load running for a long time.Like this, both increase the production cost of enterprise, wasted the electric power resource of national precious again.

The utility model content

The purpose of this utility model just provides the unloaded autostop battery saving arrangement of a kind of lathe, to reduce the production cost of enterprise, saves the electric power resource of national precious.

The utility model is achieved in that the unloaded autostop battery saving arrangement of a kind of lathe, is serially connected with start button QA, A.C. contactor KJ and stop button TA in circuit for controlling motor, and A.C. contactor KJ often leaves main contacts KJ ₁Be serially connected in the main alternating current circuit of joining with motor M, contact KJ is assisted in often opening of A.C. contactor KJ ₂Be attempted by the two ends of start button QA, in circuit for controlling motor, also be connected to the series arm of travel switch SA and time relay KT, the normally opened contact KT of time relay KT ₂Be serially connected in the wiring between start button QA and the A.C. contactor KJ coil, the series arm of travel switch SA and time relay KT is attempted by A.C. contactor KJ coil and time relay normally opened contact KT ₂The join two ends of circuit are at the two ends of stroke switch S A and be connected to the interlock contact sets of start button QA; Travel switch SA is arranged on the " STOP " position of lathe control crank the inner.

After the lathe operate as normal, when in a single day the control crank on the lathe was placed in the " STOP " position, travel switch SA was promptly pressed by the inner of control crank and disconnects, and made the time relay KT coil losing electricity that joins with it.After the delay time that overtime relay K T adjusts, the original closed normally opened contact KT of time relay KT ₂Disconnect, make the A.C. contactor KJ coil losing electricity that joins with it, A.C. contactor main contacts KJ ₁Be released, disconnect main alternating current circuit, motor M is shut down, thereby finish the no-load running state of motor.If again control crank is removed from the " STOP " position within the time relay is adjusted the time of delaying time, then control crank the inner is to the end that presses of travel switch SA, and it is closed that travel switch SA recovers again.At this moment, time relay KT coil is switched on again, and normally opened contact KT as yet that disconnect does not have enough time ₂Recover stable closure state again, control circuit is conducting still, and motor M is running still, and the lathe driving shaft can be pressed the reposition of control crank, and restarting just changes or reverse, to recover the machine operations of lathe.

The utility model can be under the situation that does not change lathe operation rules and operating habit, the no-load running of motor is time qualified within a comparison reasonable range, a large amount of waste of energy of having avoided the long-time no-load running of motor to cause thus, both reduced the production cost of enterprise, simultaneously having saved the electric power resource of national precious again, is effective measures of saving energy and reduce the cost.

Description of drawings

Fig. 1 is circuit theory diagrams of the present utility model.

The specific embodiment

As shown in Figure 1, be connected to the three-phase master alternating current circuit of 380V on the lathe motor M, tap is drawn in any two-phase of the power supply of circuit for controlling motor from three-phase master alternating current circuit.In circuit for controlling motor, be serially connected with start button QA, A.C. contactor KJ and stop button TA in the usual way, the main contacts KJ of A.C. contactor KJ ₁Be serially connected in 380V master's alternating current circuit of joining with motor M, contact KJ is assisted in often opening of A.C. contactor KJ ₂Be attempted by the two ends of start button QA.

The utility model has been set up the series arm of travel switch SA and time relay KT in circuit for controlling motor.The normally opened contact KT of time relay KT ₂Be serially connected in the wiring between start button QA and the A.C. contactor KJ coil.The series arm of travel switch SA and time relay KT is attempted by A.C. contactor KJ coil and time relay normally opened contact KT ₂The join two ends of circuit are at the two ends of stroke switch S A and be connected to the interlock contact sets of start button QA.Travel switch SA is arranged on the " STOP " position of lathe control crank the inner.

The course of work of the present utility model is: connect the lathe general supply earlier, press the start button QA in the circuit for controlling motor again, control electric current after start button QA and interlock contact sets thereof, flow time relay K T coil, time relay KT gets electric adhesive, its normally opened contact KT ₂Closure is connected A.C. contactor KJ coil line, makes A.C. contactor KJ get electric adhesive---and it often opens auxilliary contact KJ ₂Closure, self-locking start button QA; It often opens main contacts KJ ₁Closure, make the motor M operation of being switched on.

In the machined into process, after control crank was placed in the " STOP " position, travel switch SA was promptly pressed and is disconnected, time relay KT coil losing electricity, and after the time that surpasses its time-delay of adjusting, normally opened contact KT then ₂Disconnect, make the A.C. contactor KJ coil losing electricity that joins, A.C. contactor main contacts KJ ₁Be released, three-phase master alternating current circuit disconnects, and motor M promptly stops no-load running.

If within time relay KT adjusts the time of delaying time control crank is removed from the " STOP " position again, then control crank the inner is to the end that presses of travel switch SA, and travel switch SA returns to closure state again.At this moment, time relay KT coil is switched on again, and normally opened contact KT as yet that disconnect does not have enough time ₂Return to stable closure state again, make control circuit conducting still, motor M is running still, and the lathe driving shaft can be pressed the Position Control of control crank, and restarting just changes or reverse, to recover the machine operations of lathe.

After machine operations finishes or in case of emergency, as long as press stop button TA in the circuit for controlling motor, can make the coil losing electricity of A.C. contactor KJ, its main contacts KJ ₁Be released, main alternating current circuit is disconnected, and makes motor M out of service.

This device need not change the original electrical control of lathe mechanism, as long as a support is installed in the side space in distribution box, set-up time relay K T below the support installs travel switch SA above.Travel switch SA is arranged on the next door of the " STOP " position of the inner correspondence of lathe control crank, makes control crank when placing the " STOP " position, and its inner can press travel switch SA, makes it to turn-off.

The delayed setting value of time relay KT can be determined according to actual needs, generally is advisable to be no more than 60 seconds---overlong time, and the time of empty load of motor operation is lengthening just; Time is too short, makes motor frequent startup occur easily.And these all are unfavorable for playing good power savings.So the time set of time relay delayed setting generally should satisfy the operator and clamp workpiece and the time that workpiece is measured is got final product in the lathe operation process.

The utility model both can with the power line of circuit for controlling motor directly in any two-phase from the three-phase master alternating current circuit of 380V tap draw; Also can be as shown in the figure, the power line of circuit for controlling motor is connected in the main alternating current circuit by step-down transformer B.The latter can reduce the cost of selecting for use of various devices by reducing the operating voltage of control circuit on the one hand; Also can export a lower operating voltage on the other hand by control circuit, for he with providing convenience.

Claims

1, the unloaded autostop battery saving arrangement of a kind of lathe is serially connected with start button QA, A.C. contactor KJ and stop button TA in circuit for controlling motor, and A.C. contactor KJ often leaves main contacts KJ ₁Be serially connected in the main alternating current circuit of joining with motor M, contact KJ is assisted in often opening of A.C. contactor KJ ₂Be attempted by the two ends of start button QA, it is characterized in that in circuit for controlling motor, also being connected to the series arm of travel switch SA and time relay KT, the normally opened contact KT of time relay KT ₂Be serially connected in the wiring between start button QA and the A.C. contactor KJ coil, the series arm of travel switch SA and time relay KT is attempted by A.C. contactor KJ coil and time relay normally opened contact KT ₂The join two ends of circuit are at the two ends of stroke switch S A and be connected to the interlock contact sets of start button QA; Travel switch SA is arranged on the " STOP " position of lathe control crank the inner.

2, the unloaded autostop battery saving arrangement of lathe according to claim 1 is characterized in that the power line of circuit for controlling motor is connected in the main alternating current circuit by step-down transformer B.