CN203602667U - All-digital control medium-frequency through quench machining tool - Google Patents

Abstract

The utility model relates to an all-digital control medium-frequency through quench machining tool which comprises a machine tool body, an electric control part, a quenching water spray part and a water temperature control part, wherein the machine tool body is in a single stand column-guide rail structure and mainly consists of a slide lifting mechanism (9) which drives a slide (3) to move up and down along a guide rail of a stand column, an upper ejector rod lifting mechanism (1) installed on the slide (3), an upper ejector rod (4) and a lower tip rotary base (11). An alternating current servo controller in the electric control part is connected with alternating current servo motors in the slide lifting mechanism (9) and the lower tip rotary base (11) through cables. Compared with the original frame structure, the all-digital control medium-frequency through quench machining tool provided by the utility model has high guiding precision, and meanwhile, the drive motor of the slide lifting mechanism is in the best function state to reduce the power of the drive motor, so that the roller can more stably run up and down, which is beneficial to the improvement of the quenching quality of the roller.

Description

The intermediate frequency through heating lathe of digital control

Technical field

The utility model relates to lathe, particularly a kind of intermediate frequency through heating lathe of digital control.

Background technology

Certain silicon sheet plant is in order to protect the not unofficial biography of silicon steel production technology of oneself, produce voluntarily and use always the working roll of silicon steel Sen Shi milling train, Silicon Roller is a kind of lightweight slender piece, the intermediate-frequency quenching machine tool of the digital control of ZT-II type of topmost equipment for Heating Processing Shi Wo company development and production, in the past, what this equipment adopted is a kind of skeleton construction, simpler and cruder, the problem existing has: what the mode of (1) control workpiece lifting adopted is the type of drive of Hydraulic Station+hydraulicvalve+conduit under fluid pressure+oil motor, carry out the rotating speed of regulator solution pressure motor by controlling the aperture of hydraulicvalve, and then lifting and the speed of rotation of control workpiece, hydraulicvalve adopts a grade open loop control, velocity control accuracy is not high, (2) what the constant control of temperature adopted when workpiece quenching is old-fashioned instrument control mode, and CPU arithmetic speed is slow, and precision is difficult to further improve.

Summary of the invention

Technical problem to be solved in the utility model is: provide a kind of intermediate frequency through heating lathe of digital control, the problem existing to overcome above-mentioned prior art.

The technical scheme that the utility model solves its technical problem employing is: comprise machine body, electrical control and quench water sprinkling and water temperature control section, described machine tool main body part adopts single column guide rail structure, mainly by the slide hoisting appliance that drives slide to move up and down along the guide rail of column, be arranged on upper ejector pin hoisting appliance, upper ejector pin and lower top rotation support composition on slide, on column, by fixed support, preheating oven be housed; Alternating-current servo controller in described electric control system is connected with the AC servo motor in slide hoisting appliance and lower top rotation support by cable.

Described upper ejector pin hoisting appliance can connect column by cable-pulling chain, and cable-pulling chain can be equipped with the cable of upper ejector pin lifting motor and limit switch.

Described upper ejector pin can be fixed on slide by upper ejector pin hoisting appliance.This upper ejector pin bottom is furnished with can be up and down and the upper dead head of rotation, is provided with toply on this on dead head, can be convenient for changing.

Described lower top rotation support can be provided with lower dead head top under AC servo motor, timing belt pulley and installation, and lower dead head is provided with lower top, can be convenient for changing; AC servo motor drives down top rotation by timing belt pulley, is driven and is fitted in lower roller rotational on top by frictional force.

Described slide hoisting appliance can comprise lifting servomotor and belt pulley and elevating screw pair, and lifting servomotor drives belt pulley to be synchronized with the movement, and then drives screw mandrel rotation, and slide can be moved up and down.

Described quench water is sprayed and water temperature control section, can mainly be formed by pond, quenching water pump, water spray ring and cooling-water machine, one end of quenching water pump is connected with pond by water pipe, and the other end of quenching water pump is connected with water spray ring by water pipe, and cooling-water machine is contained in by pond.

Described electric control system, can mainly be made up of the industrial computer being connected with cable, PLC controller, intermediate frequency power supply, intelligent temperature controller, thyristor power source and alternating-current servo controller.

The utility model new machine compared with the prior art, mainly contains following advantage:

1. new machine adopts modular construction, and not only entirety is compacter and attractive in appearance, and modular spare part is changed well, as preheating oven adopts the identical body of heater of three joints, when certain joint damage can integral replacing after, can carry out off-line reparation to damaging element, improved equipment up-time efficiency.

2. new machine adopts AC servo motor to replace original oil motor, what originally roll lifting and rotation adopted is the type of drive of Hydraulic Station+hydraulicvalve+conduit under fluid pressure+oil motor, carry out the rotating speed of regulator solution pressure motor by controlling the aperture of hydraulicvalve, and then lifting and the speed of rotation of control workpiece, hydraulicvalve adopts open loop to have level to control, and velocity control accuracy is not high; AC servo is directly used controlling electric energy motor, and volume is little, and it is convenient to control, and speed employing closed loop stepless time adjustment control, and response is fast, and control accuracy is high.

3. the slide of new machine moves and adopts vertical machine guide frame, and skeleton construction guiding accuracy is more originally higher, slide balancing weight is housed in the casing of column simultaneously, makes the drive-motor of slide hoisting appliance in optimal efficacy state.Reduce drive-motor power, roll has been moved up and down more steady, contributed to improve roller quenching quality.

4. by the perfect adaptation of upper computer and PLC, introduced two-way Temperature Feedback and carried out quenching temperature control, quenched compared with constant-temperature control method with original single channel instrument, temperature control is more flexible, more can meet the roller quenching technique needs of different model.Simultaneously, on hardware, retain the original single channel intelligent temperature controller thermostatically controlled function of quenching, in the time occurring that upper industrial computer crashes or the communication failure between industrial computer and temperature control instrument and PLC occurs, workman can be switched to single channel instrument master mode by transfer lever, with temperature control instrument control quenching induction heating temperature, proceed roller quenching work, guaranteed to greatest extent the continuous operation of lathe.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model, now roll 18 preheating in preheating oven.

Fig. 2 is the left view of Fig. 1, and now roll 18 has quenched, and has put down.

Fig. 3 is the control block diagram of Controlling System.

Fig. 4 is equipment work logic diagram.

Fig. 5 quenches to start roll location schematic diagram.

Fig. 6 is the roll location schematic diagram that quenched.

In figure: 1. upper ejector pin hoisting appliance; 2. upper ejector pin seat; 3. slide; 4. upper ejector pin; 5. resistance preheat stove; 6. thermocouple; 7. water spray ring; 8. cable-pulling chain; 9. slide hoisting appliance; 9-1. lifting servomotor; 10. column; 10-1. preheating oven support; 10-2. auxiliary repair platform; 11. times top rotation supports; 11-1. servomotor; 12. balance weight irons; 13. quenching inducers; 14-1. infrared temperature measuring head (upper left); 14-2. infrared temperature measuring head (bottom right); Top on 15.; 16. times top; 17. intermediate frequency transformers; 18. rolls; 19. cooling-water machines; 20. industrial computer; 21. indicating meters; 22.PLC controller; 23. operator's console; 24. lathe limit switches; 25-1. infrared temperature controller (upper left); 25-2. infrared temperature controller (bottom right); 25-3. intelligent temperature controller; 26. preheating oven temperature control instruments; 27. intermediate frequency power supplies; 28. control system selector switch; 29. thyristor power sources; 30. warning howlers; 31. roll lifting servo controllers; 32. roller rotational servo controllers; 33. quenching water pumps; 34. cooling-water machine controllers.

Embodiment

The utility model is the intermediate frequency through heating lathe that a kind of intermediate-frequency quenching machine tool of the digital control of ZT-II type to current use carries out improved digital control, the key distinction is: adopt high column structure, by the workpiece lifting of original hydraulic power actuating system control and rotation, change the lifting and the rotation that add the type of drive control roll of screw mandrel and synchronous pulley by servomotor into.And gather two-way quenching temperature value by bus communication mode, then download it in PLC, improved different positions in the time of workpiece motion s quenching temperature is implemented the tolerance range of closed-loop control.

Below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but do not limit the utility model.

The intermediate frequency through heating lathe of the digital control that the utility model provides is made up of following part, the one, machine body part, be used for lifting roll and rotary roller, and be used for fixing process furnace and medium frequency induction heater, the 2nd, electric control system, be used for controlling the exercises of lathe and the temperature control of well heater, the 3rd, quench water is sprayed and water temperature control section.

Described machine body part, adopt single column guide rail structure, its structure as depicted in figs. 1 and 2, mainly formed by upper ejector pin hoisting appliance 1, slide 3, upper ejector pin 4, resistance preheat stove 5, slide hoisting appliance 9, column 10, roller rotational mechanism 11, balance weight iron 12, upper top 15 and lower top 16, wherein: slide 3 moves up and down along the guide rail of column 10.Upper ejector pin hoisting appliance 1, upper ejector pin seat 2, lower top rotation support 11 and lower dead head are fixed on slide 3, and move along the carriage rail of column 10 with slide 3.Slide balancing weight 12 is housed in the casing of column 10, makes the lifting servomotor 9-1(AC servo motor of slide hoisting appliance 9) in optimal efficacy state.This lathe list column guide rail structure directing and operation stability are better than former frame mechanism, and slide hoisting appliance 9, by AC servo machinery driving, has improved the positional precision that roll moves up and down.The lower top rotary actuation mode of lower top rotation support 11 changes AC servo motor, toothed belt transmission mode into by fluid motor-driven, has improved the running accuracy of roll.Thereby the raising of roll location precision and running accuracy can realize Controlling System the closed-loop of quenching process is controlled automatically, computer control system is carried out data gathering, data preparation real time on-line monitoring to whole quenching process, improve the quality of roller quenching, reduce operator's labour intensity.

Described upper ejector pin hoisting appliance 1 is contained on slide 3, drives upper ejector pin seat 2 to move up and down; This upper ejector pin hoisting appliance connects column 10 by cable-pulling chain 8, and cable-pulling chain 8 is equipped with the cable of upper ejector pin lifting motor and limit switch, and column 10 is fixed in foundation ditch by foundation bolt.

Described upper ejector pin 4 is fixed on slide 3 by upper ejector pin seat 2, and this slide is arranged on the guide rail of column 10, can under the dragging of slide hoisting appliance 9, move up and down.

Described resistance preheat stove 5 forms (Fig. 1) by three the same resistance resistance furnace 5-1,5-2,5-3 of structure, is fixed on preheating oven support 10-1 upper, between this preheating oven support and column 10, adopts screw joints.Before induction heating, by slide 3, roll 18 is delivered to preheating in resistance preheat stove; When induction heating, moved at a slow speed downwards by slide 3, make roll 18 be heated to quenching temperature by quenching inducer 13, then carry out quench cooled through water spray ring 7; Resistance preheat stove has 3 thermocouple 6, is arranged on respectively on three preheating resistance furnace 5-1,5-2,5-3.

Capacitor for electric induction heating system, omnibus bar and quenching inducer 13 are installed on described intermediate frequency transformer 17, they are fixed on the rail brackets of auxiliary repair platform 10-2 of lathe side, can before and after, move up and down, be convenient to regulate the relative position of quenching inducer 13 and roll 8.Auxiliary repair platform 10-2 is closely connected with column 10.

Described slide hoisting appliance 9 is contained on column 10, and this slide hoisting appliance comprises lifting servomotor and belt pulley, and lifting servomotor 9-1 rotarily drives belt pulley and is synchronized with the movement, and then drives screw mandrel rotation, and slide 3 is moved up and down.

Described lower top rotation support 11 is contained on slide 3, Gai Gai mechanism is for roller rotational, comprise under servomotor 11-1, belt pulley and installation top 16 dead head, rotatablely moving of servomotor 11-1 is to drive down top 16 rotations by timing belt pulley, makes the roll 18 being placed on lower top 16 follow rotation.

Described balance weight iron 12 is positioned at column 10, for the load at balance slide hoisting appliance 9 two ends, and reduces slide 3 and move up and down the power draw of resistance and lifting servomotor.

Described infrared temperature measuring head 14 comprises infrared temperature measuring head 14-1(upper left) and infrared temperature measuring head (bottom right) 14-2, they are respectively fixed on the auxiliary repair platform 10-2 on quenching inducer 13 limits, left and right by adjustable support, and point for measuring temperature is as shown in Fig. 5 (or Fig. 6).

Described top 15, lower top 16 are arranged on respectively on dead head, lower dead head, upper dead head is arranged in upper ejector pin 4, requirement can slide up and down and rotate, and utilizes the upper and lower centre hole of roll and upper deadweight top and dead head that roll 18 is fixed on slide 3, as shown in Figure 2.For the roll of different lengths, can adjust upper top 15 position by upper ejector pin hoisting appliance 1.

Described quench water is sprayed and water temperature control section, referring to Fig. 2, is mainly made up of pond, quenching water pump 33, water spray ring 7 and cooling-water machine 19.In quenching process, the water in pond is flowed to water spray ring 7 by quenching water pump 33, by water spray ring 7, water sprayed on the roll 18 after heating and carries out quench cooled, and the backwater after quenching flows back to pond again by pipeline, realizes quench water recycle.Summer, water temperature over-high, can open cooling-water machine 19, and tank water is carried out to circulating cooling; Winter, water temperature was excessively cold, can open live steam pipe, and to pond, Zhong Shui heats, and in pond, water temperature is shown by thermometric instrument.

Described electric control system, participate in Fig. 3 and Fig. 4, mainly by industrial computer 20, PLC controller 22, intermediate frequency power supply 27, temperature control instrument 26, thyristor power source 29 and alternating-current servo controller composition, wherein: thyristor power source 29 is used for the furnace temperature of controlling resistance preheating oven 5, furnace temperature detects by thermopair 6, temperature signal feeds back to temperature control instrument 26, with compare rear temperature control instrument 26 to fixed temperature and export control signal to thyristor power source 29, if temperature higher position reduces the voltage of thyristor power source 29, otherwise, if the voltage of the low thyristor power source 29 that just raises of temperature, make temperature in stove keep constant.The temperature variation parameter of resistance preheat stove is sent in industrial computer 20 by 485 connection, shows in real time and record, is convenient to historical query.Intermediate frequency power supply 27 is used for realizing roll induction heating, and induction heating temperature is detected by infrared temperature measuring head 14, and infrared temperature controller 25 shows.In the time that the control system selector switch 28 that quenches is connected " temperature control instrument control " (connecting K2), the temperature feedback signal that the roll induction heating temperature detecting by infrared temperature measuring head 14-1 is transformed into 0-10mA by infrared temperature controller 25-1 be input to intelligent temperature controller 25-3 compare with PID computing after output a control signal to intermediate frequency power supply 27, if temperature higher position reduces the voltage of intermediate frequency power supply 27, otherwise, if the voltage of the low intermediate frequency power supply 27 that just raises of temperature, keeps roller temperature constant.Meanwhile, the temperature variation data of roll induction heating are sent in industrial computer 20 by 485 communication ports of infrared temperature controller 25, show in real time and record, and can pass in PLC down; If when control system selector switch 28 is connected PLC quenching control (connecting K1), PLC obtains roll induction heating temperature value of feedback from industrial computer, with to fixed temperature after export control signal, the output of intermediate frequency power supply 27 is controlled, realize thermostatic control.Roll lifting servo controller 31 is used for controlling the rotating speed of lifting servomotor 9-1, and the rising or falling speed of slide 3 is determined by the rotating speed of lifting servomotor 9-1.Roller rotational servo controller 32 is used for controlling the rotating speed of rotating servo motor 11-1, and roller rotational speed is determined by servomotor 11-1 rotating speed.Control signal and lathe limit switch 24 that PLC controller 22 receives on operator's console 23 send guard signal, control lathe and normally move.Industrial computer 20 is by man-machine control interface, input various processing parameters and under pass to PLC controller 22 and carry out, simultaneously, the course of processing parameter that the guard signal that PLC controller 22 is sent by warning howler 30 and preheating oven temperature control instrument 26 gather is presented on the screen of indicating meter 21 automatically, and depositing hard disk in, convenient operation personnel inquire about and printout temperature curve and processing form.

Described industrial computer 20 can adopt grinds magnificent 510 industrial computers.

Described PLC controller 22 can adopt the S7-1200 of Siemens Company series of PLC.

Described intermediate frequency power supply 27 can adopt the intermediate frequency power supply having from turn-offing the IGBT element making of controlling function, and efficiency is high, is convenient to temperature control.

Described servomotor all adopts AC servo motor, and alternating-current servo controller and motor that lifting and rotation are used can adopt peace river servo-driver SGDV120A01A+ servomotor SGMGV13ADC6C, on-the-spot stable and reliable operation.

Described intelligent instrument divides two portions, temperature control instrument (intelligent temperature controller) 25-3 that wherein quenches can select Shanghai self-service instrument six factories from Tuning PID Controller instrument XTMD-1925-T4, preheating oven intelligent temperature controller 26 can adopt the general P906-301-010-200 that reaches production in Taiwan, and two kinds of instrument are all with RS-485 communication interface.

The working process following (referring to Fig. 4, Fig. 5, Fig. 6) of the intermediate frequency through heating lathe of the digital control of the utility model:

According to Fig. 4, after equipment self-inspection completes, first roll 18 to be processed is put into resistance preheat stove 5, closing on roll material phase transition temperature interval (approximately 700 ℃) thermostatically heating, within approximately 3 hours, (actual temp and time need be according to roll materials, the requirement such as size and technique is set by technological design personnel adjustment), after soaking time arrives, start slide lifting motor 9-1 and drive roll 18 uniform descents, and under starting, top rotating machine drives roller rotational, arrive shown in Fig. 5 in roll lower surface and locate to stop to decline (encountering " quenching, it is spacing to start "), now start with the induction heating power of normal heating power half, the roll 18 in induction coil slowly to be heated up, open quenching water pump 33 sprays water cooling simultaneously, carry out the preparation work before quenching, in the time that infrared temperature measuring head 14-1 detection control thermometric reaches the upper temperature limit (approximately 950 ℃) of intelligent instrument setting, roll 18 starts to set quenching velocity uniform descent again, now PLC carries out output rating (approximately 1050 ℃ of the surface temperatures of roll 18 of closed-loop temperature control adjusting medium frequency induction power supply automatically according to Temperature Feedback, temperature requirement fluctuation range is in ± 2 ℃), roll 18 after heating enters water spray ring 7 and carries out quench cooled, when roll 18 upper end surfaces are during in position shown in Fig. 6 (encountering " quenching completes spacing "), again be switched to intermediate frequency half power induction heating state, roll 18 continues to decline, until roll 18 upper surfaces are while leaving quenching inducer 13, intermediate frequency power supply is closed, and induction heating process completes, and roll continues uniform descent and sprays water coolingly, until slide 3 is encountered after " decline stops spacing ", stops declining, after cooling time delay countdown completes, system automatically stops roller rotational and sprays water coolingly, and operative employee dismantles the roll that lower quench treatment completes, and replaces with new roll to be processed simultaneously, then is risen to and in preheating oven, carry out heating and thermal insulation.

Claims (8)

1. the intermediate frequency through heating lathe of a digital control, comprise machine body, electrical control and quench water sprinkling and water temperature control section, it is characterized in that described machine tool main body part adopts single column guide rail structure, mainly by the slide hoisting appliance (9) that drives slide (3) to move up and down along the guide rail of column (10), be arranged on upper ejector pin hoisting appliance (1), upper ejector pin (4) and lower top rotation support (11) composition on slide (3), above by fixed support, preheating oven (5) be housed at column (10); Alternating-current servo controller in described electric control system is connected with the AC servo motor in lower top rotation support (11) with slide hoisting appliance (9) by cable.

2. the intermediate frequency through heating lathe of digital control according to claim 1, it is characterized in that described upper ejector pin hoisting appliance (1) connects column (10) by cable-pulling chain (8), cable-pulling chain (8) is equipped with the cable of upper ejector pin lifting motor and limit switch.

3. the intermediate frequency through heating lathe of digital control according to claim 1, is characterized in that described upper ejector pin (4) is fixed on slide (3) by upper ejector pin seat (2).

4. the intermediate frequency through heating lathe of digital control according to claim 1, is characterized in that being provided with top (15), and it is arranged in upper ejector pin (4) by upper dead head, and can in upper ejector pin, move up and down and rotate.

5. the intermediate frequency through heating lathe of digital control according to claim 1, it is characterized in that described lower top rotation support (11) is provided with AC servo motor, timing belt pulley and lower dead head, lower dead head is installed lower top (16), AC servo motor drives down top (16) rotation by timing belt pulley, is driven and is fitted in lower roller rotational on top by frictional force.

6. the intermediate frequency through heating lathe of digital control according to claim 1, it is characterized in that described slide hoisting appliance (9) comprises lifting servomotor, belt pulley and elevating screw pair, lifting servomotor drives belt pulley to be synchronized with the movement, and then drive screw mandrel rotation, slide (3) is moved up and down.

7. the intermediate frequency through heating lathe of digital control according to claim 1, it is characterized in that described quench water sprinkling and water temperature control section, mainly formed by pond, quenching water pump (33), water spray ring (7) and cooling-water machine (19), one end of quenching water pump (33) is connected with pond by water pipe, the other end of quenching water pump (33) is connected with water spray ring (7) by water pipe, and cooling-water machine (19) is contained in by pond.

8. the intermediate frequency through heating lathe of digital control according to claim 1, it is characterized in that described electric control system, mainly formed by the industrial computer being connected with cable (20), PLC controller (22), intermediate frequency power supply (27), intelligent temperature controller, thyristor power source (29), alternating-current servo controller.

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