CN101791670B - Vertical ring rolling mill capable of realizing on-line measurement control - Google Patents
Vertical ring rolling mill capable of realizing on-line measurement control Download PDFInfo
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- CN101791670B CN101791670B CN2010101203556A CN201010120355A CN101791670B CN 101791670 B CN101791670 B CN 101791670B CN 2010101203556 A CN2010101203556 A CN 2010101203556A CN 201010120355 A CN201010120355 A CN 201010120355A CN 101791670 B CN101791670 B CN 101791670B
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Abstract
The invention relates to a vertical ring rolling mill. The vertical ring rolling mill capable of realizing on-line measurement control comprises a rack, a rolling wheel mechanism, a measuring roll mechanism, a guide roll mechanism, a core roll mechanism and an unloading device. The vertical ring rolling mill is characterized by also comprising an on-line measurement control device; the on-line measurement control device comprises a displacement sensor group, a first displacement measurement sensor is arranged on a first elastic follow-up device of the measuring roll mechanism, and a second displacement measurement sensor is arranged on a slide block of the rolling wheel mechanism; and the measuring roll mechanism comprises the first elastic follow-up device, a measuring roll, a first push rod, a first bearing, a first shaft and a first bracket, wherein the measuring roll is fixed on the first shaft by the first bearing, the first shaft is fixed on the first bracket, the first bracket is fixed on the first push rod, and the first push rod is arranged on the first elastic follow-up device. The vertical ring rolling mill provides a condition for realizing on-line measurement control of outside diameter sizes of ring blanks, and has the advantages of manpower and material economization, high part molding precision, small post machining amount, low rejection rate and the like.
Description
Technical field
The present invention relates to a kind of vertical ring rolling mill.
Background technology
Vertical ring rolling mill is the common equipment of middle-size and small-size ring parts rolling forming, belongs to radial rolling, and rolling principle as shown in Figure 1.
Before traditional vertical ring rolling mill work, need a standard ring to set in advance the position of guide roller and measuring roller.Earlier workpiece ring base (ring blank) is enclosed within on the core roller during work, the core roller is motionless, and roll milling wheel moves under the effect of cylinder pressure, realizes the spreading feeding, and roll milling wheel is simultaneously by another horizontal motor-driven rotation; Ring wall thickness attenuation gradually under the effect of roll milling wheel and core roller, diameter increases gradually, and when the ring external diameter increases to when contacting with measuring roller, outside dimension puts in place, and ring is taken out in the roll milling wheel backhaul that makes progress, and finishes once circulation.In the course of hot rolling, ring blank external diameter sharply increases at short notice, and since the limitation of machine for rolling ring structure, the very difficult outside dimension of realizing the real-time online measuring ring blank of ring rolling process, thereby also just can't be implemented in line traffic control.Measure in the control at vertical ring rolling process both at home and abroad at present and still do not have effective scheme, the domestic people of having proposes to utilize air pressure or hydraulic pressure to drive slide block and does the straight-line feed motion, allow the guide roller servo-actuated, all the time move along the roll milling wheel and the core roller line of centres with the center of circle that guarantees ring blank in the operation of rolling, but the motion rules of the guiding force of guide roller and guide roller are uncontrollable in the operation of rolling, therefore be difficult to allow the center of ring blank not be offset all the time, also be difficult to realize the external diameter of on-line measurement ring blank, do not reach the purpose of On-line Control, and the unstability of air pressure and hydraulic pressure is difficult to guarantee the precision of On-line Control.Therefore the production of existing vertical ring rolling mill is controlled by the artificial visually examine fully, promptly in the operation of rolling, the Artificial Control roll milling wheel moves down, when observing the ring blank and touch measuring roller, return by the Artificial Control roll milling wheel, because the uncertain factor of artificial visually examine's control is a lot, force technology to take the countermeasure of high tolerance, big allowance, cause the drawback that forging precision is low, raw materials consumption is big.Therefore, development of new is measured with control technology the traditional vertical machine for rolling ring is renovated highly significant.
Summary of the invention
The object of the present invention is to provide a kind of vertical ring rolling mill of realizing on-line measurement control, this vertical ring rolling mill provides condition for the outside dimension of realizing on-line measurement control ring blank.
To achieve these goals, the technical solution used in the present invention is: the vertical ring rolling mill that can realize on-line measurement control, it comprises frame 3, roll milling wheel mechanism, measuring roll mechanism, guide roller mechanism, core roller mechanism and device for discharging 14, the vertical center line of measuring roll mechanism center line and lathe is 50-60 ° of angle, the vertical center line of guide roller mechanism center line and lathe is 60-70 ° of angle, the measuring roller 4 of measuring roll mechanism is positioned at the below, left side of the core roller 12 of core roller mechanism, the guide roller 13 of guide roller mechanism is positioned at the right side of the core roller 12 of core roller mechanism, the roll milling wheel 6 of roll milling wheel mechanism be positioned at the core roller mechanism core roller 12 directly over, the stripper of device for discharging 14 is enclosed within on the core roller 12 of core roller mechanism; It is characterized in that: it also comprises online measuring and controlling, the on-line measurement control device comprises the displacement transducer group, the displacement transducer group is made up of first displacement measurement sensor 2 and second displacement measurement sensor 11, first displacement measurement sensor 2 is installed on first elastic follow-up device 1 of measuring roll mechanism, and second displacement measurement sensor 11 is installed on first slide block 8 of roll milling wheel mechanism;
Described measuring roll mechanism comprises first elastic follow-up device 1, measuring roller 4, first push rod 23, clutch shaft bearing 26, first 27, first support 28, measuring roller 4 is fixed on first 27 by clutch shaft bearing 26, be fixed on for first 27 on first support 28, first support 28 is fixed on first push rod 23, and first push rod 23 is provided with on first elastic follow-up device 1;
Described guide roller mechanism comprises second elastic follow-up device, guide roller 13, second push rod, second bearing, second, second support, guide roller 13 by second bearing fixing on second, second is fixed on second support, second support is fixed on second push rod, and second push rod is provided with on second elastic follow-up device.
The on-line measurement control device, it comprises displacement transducer group, Programmable Logic Controller (PLC), locating module, servo-driver and control system; The displacement transducer group is made up of first displacement measurement sensor 2 and second displacement measurement sensor 11, first displacement measurement sensor 2 is installed on first elastic follow-up device 1 of measuring roll mechanism of vertical ring rolling mill, and second displacement measurement sensor 11 is installed on first slide block 8 of roll milling wheel mechanism of vertical ring rolling mill; The output of first displacement measurement sensor 2, second displacement measurement sensor 11 links to each other with the input interface of Programmable Logic Controller respectively by data wire, the connection of communicating by letter between Programmable Logic Controller and the locating module, the output of locating module link to each other with the control end of servo-driver (locating module control servo-driver); Control system comprises the first relay K A1, the second relay K A2, the 3rd relay K A3 and the 4th relay K A4; The first relay K A1 is connected on the 27 stitch BK+ of servo-driver, receives the command signal from servo-driver, is used to control the closure of servo brakes; The second relay K A2, the 3rd relay K A3 correspondence respectively are connected on Y0, the Y1 point of Programmable Logic Controller (PLC), reception is from the command signal of Programmable Logic Controller (PLC), the second relay K A2 and the 3rd relay K A3 are arranged on (control roller motor rotating on the power input line of roller motor of roll milling wheel mechanism of vertical ring rolling mill, work and stop), the startup of the second relay K A2 and the 3rd relay K A3 control roller motor; The 4th relay K A4 is connected on the Y2 point of Programmable Logic Controller (PLC), reception is from the command signal of Programmable Logic Controller (PLC), the 4th relay K A4 is arranged on (control servomotor rotation on the power input line of servomotor 15, work and stop), the startup of the 4th relay K A4 control servomotor; The 5th relay K A5 is a duplicate relay, is connected on the Y3 point of Programmable Logic Controller (PLC).
The invention has the beneficial effects as follows:
1, measuring roll mechanism adopts said structure (employing elastic follow-up device), the measuring roller of measuring roll mechanism can move with the increase of ring blank external diameter, can measure the displacement of measuring roller in real time, for the outside dimension of realizing on-line measurement control ring blank provides condition.
Adopt the on-line measurement control device, can realize the outside dimension of on-line measurement control ring blank.Second displacement measurement sensor is installed on the slide block of roll milling wheel mechanism, first displacement measurement sensor is installed on the measuring roll mechanism, can measure the displacement of roll milling wheel and measuring roller in real time, obtain the real-time external diameter value of ring blank by the formula conversion, when the external diameter value reaches requirement, by by Controlled by Programmable Controller roll milling wheel feed-disabling, carry out return action, can realize the outside dimension of on-line measurement control ring blank.Has advantage such as save manpower, economical with materials, part forming precision height, follow-up amount of machining is little, percent defective is low.
2, guide roller mechanism, measuring roll mechanism are designed to half servo-actuated (employing elastic follow-up device), be that rolling early stage is movable, rolling later stage locking has realized that guide roller is adjustable to the power of holding tightly of ring early stage at ring rolling, and along with guide roller is postponed by the ring outer wall, the offset of ring reduces greatly; Rolling later stage guide roller fixed-site can make things convenient for the real-time conversion of ring external diameter.
3, the feed motion of roll milling wheel vertical direction is controlled by reductor, ball wire bar pair by servomotor, has very high precision.
4, the rolling width of roll milling wheel mechanism can be regulated by adjusting pad, has realized when the ring of rolling differing heights, only needs to change and adjusts pad, need not to process again a cover roll milling wheel.
5, according to the requirement of ring size, whole sliding seat is adjustable in base, and when rolling big ring, rotatable screw rod drives sliding seat and moves backward, and during rolling little ring, it is mobile forward that rotatable screw rod drives sliding seat.
Description of drawings
Fig. 1 is a ring radial rolling schematic diagram;
Fig. 2 is a vertical ring rolling spare geometry Mathematical Modeling schematic diagram of the present invention;
Fig. 3 is fitting formula and calculated with mathematical model formula comparison diagram;
Fig. 4 is a structural representation of realizing the vertical ring rolling mill of on-line measurement control of the present invention;
Fig. 5 be among Fig. 4 along A-A to cutaway view;
Fig. 6 is a structural representation of realizing the measuring roll mechanism of the vertical ring rolling mill that on-line measurement is controlled of the present invention;
Fig. 7 is the vertical view of Fig. 6;
Fig. 8 is along the cutaway view of B-B line among Fig. 6;
Fig. 9 is a structural representation of realizing the roll milling wheel mechanism of the vertical ring rolling mill that on-line measurement is controlled of the present invention;
Figure 10 is a structural representation of realizing the core roller mechanism of the vertical ring rolling mill that on-line measurement is controlled of the present invention;
Figure 11 is the structural representation of on-line measurement control device of the present invention;
Figure 12 is a FX series Programmable logic Controller (PLC) wiring diagram;
Figure 13 is the displacement transducer wiring diagram;
Figure 14 is a FX series locating module wiring diagram;
Figure 15 is the servo-driver wiring diagram;
Among the figure: 1-first elastic follow-up device, 2-first displacement measurement sensor, 3-frame, the 4-measuring roller, 5-ring blank, 6-roll milling wheel, the 7-left plate, 8-first slide block, 9-ball wire bar pair, 10-first reductor, 11-second displacement measurement sensor, 12-core roller, the 13-guide roller, 14-device for discharging, 15-servomotor, 16-lower support housing, 17-Hooks coupling universal coupling, 18-second reductor, the 19-bolt, 20-first screw rod, 21-second screw rod, 22-swivel nut, 23-first push rod, the 24-spring, 25-first Fixed latches, 26-clutch shaft bearing, first of 27-, 28-first support, 29-right panel, 30-sliding seat, 31-sensor fixed axis, the 32-spring cavity, 33-the 3rd bearing (first self-aligning roller bearing), 34-base, the 35-spring stop, the 36-gland, 37-adjusts pad, cam rings in the middle of the 38-, 39-the 4th bearing, 40-the 5th bearing, 41-power transmission shaft, 42-core roller pull bar, 43-lower support main shaft, 44-the 6th bearing (self-aligning roller bearing), 45-the 7th bearing (thrust ball bearing), 46-the 8th bearing (self-aligning roller bearing).
The specific embodiment
As Fig. 4, shown in Figure 5, can realize the vertical ring rolling mill of on-line measurement control, it comprises frame 3, roll milling wheel mechanism, measuring roll mechanism, guide roller mechanism, the core roller mechanism, device for discharging 14 and on-line measurement control device, the vertical center line of measuring roll mechanism center line and lathe is 50-60 ° of angle, the vertical center line of guide roller mechanism center line and lathe is 60-70 ° of angle, the measuring roller 4 of measuring roll mechanism is arranged in the left side below of the core roller 12 of core roller mechanism, and (left side of Fig. 4 is a left side, the right is right), the guide roller 13 of guide roller mechanism is positioned at the right side of the core roller 12 of core roller mechanism, the roll milling wheel 6 of roll milling wheel mechanism be positioned at the core roller mechanism core roller 12 directly over, the stripper of device for discharging 14 is enclosed within on the core roller 12 of core roller mechanism.
As Fig. 6, Fig. 7, shown in Figure 8, described measuring roll mechanism comprises first elastic follow-up device 1, measuring roller 4, first push rod 23, first Fixed latches 25, clutch shaft bearing 26, first 27, first support 28, measuring roller 4 is fixed on first 27 (as shown in Figure 6 by clutch shaft bearing 26, present embodiment adopts 2 clutch shaft bearings), be fixed on for first 27 (fixing) on first support 28 by first Fixed latches 25, first support 28 fixing (by being threaded) is on first push rod 23, first push rod 23 is provided with on first elastic follow-up device 1, the moving chi that the first displacement measurement sensor 2[, first displacement measurement sensor 2 is installed on first elastic follow-up device 1 is fixed on first push rod 23, and the scale of first displacement measurement sensor 2 is fixed on the sensor fixed axis 31 (sensor fixed axis 31 is fixed on the sliding seat 30) on the sliding seat 30 of first elastic follow-up device 1];
Described guide roller mechanism comprises second elastic follow-up device, guide roller 13, second push rod, second Fixed latches, second bearing, second, second support, guide roller 13 by second bearing fixing on second, second is fixed on second support and (is fixed by second Fixed latches), second support is fixed (by being threaded) on second push rod, and second push rod is provided with on second elastic follow-up device.
The structure of the structure of second elastic follow-up device and first elastic follow-up device 1 identical (structure that is the structure of guide roller mechanism and measuring roll mechanism is identical); Described first elastic follow-up device 1 comprises first screw rod 20, second screw rod 21, swivel nut 22, spring 24, sliding seat 30, base 34, base 34 is fixed on the frame 1, the upper surface of base 34 is provided with chute (or guide rail), the left end of base 34 is fixed (as welding) left plate 7, have first screw hole, second screw hole on the left plate 7, the 3rd slide block of sliding seat 30 bottoms be positioned at base 34 chute (or sliding seat 30 bottoms establish chute, the guide rail on the base 34 is positioned at the chute of establishing of sliding seat 30 bottoms; Be that sliding seat 30 can slide on base 34), the right-hand member of first screw rod 20 is threaded with sliding seat 30 after passing first screw hole on the left plate 7, be rotary with nut on first screw rod 20 and (pass through adjusting nut, can regulate the position of sliding seat 30 on base 34), in the sliding seat 30 is that (sliding seat 30 is by header board for spring cavity 32, back plate, left side plate, right panel 29 is fixedly formed by screw, establish right push rod through hole on the right panel 29), the left part of sliding seat 30 is provided with left push rod through hole, the right part of sliding seat 30 is provided with right push rod through hole, left side push rod through hole, right push rod through hole (the left push rod through hole that is connected with spring cavity 32 respectively, the central axis of right push rod through hole all is positioned on the same axis, and promptly first push rod 23 can be from left push rod through hole, pass in the right push rod through hole; In first elastic follow-up device, the left side of Fig. 6 is a left side, the right is right), insert in the spring cavity 32 the right push rod through hole of the left part of first push rod 23 from sliding seat 30, be fixed with spring stop 35 on first push rod 23, spring stop 35, spring 24 lays respectively in the spring cavity 32, spring 24 is enclosed within on the left part of first push rod 23, the left end of spring 24 contacts with sliding seat 30, the right-hand member of spring 24 contacts with spring stop 35, the right-hand member of second screw rod 21 is threaded with swivel nut 22 after passing second screw hole on the left plate 7, be rotary with nut on second screw rod 21 and (pass through adjusting nut, the amount of retreating of first push rod 23 can be limited in the position of adjustable swivel nut 22 relative sliding seats 30, and first push rod, 23 positions are by second screw rod 21 and swivel nut 22 lockings).
The concrete structure of guide roller mechanism, measuring roll mechanism is seen Fig. 6, Fig. 7, Fig. 8, entire mechanism is designed to half servo-actuated, be that rolling early stage is movable, rolling later stage locking, realized that guide roller applies the adjustable power of holding tightly to ring blank 5 in the ring blank rolling early stage, prevent the ring blank in the shake in rolling early stage, and along with guide roller is postponed by ring blank 5 outer walls, the offset of ring blank 5 reduces greatly; Rolling later stage guide roller fixed-site can make things convenient for the real-time conversion of ring blank external diameter.Be implemented as follows: base 34 is fixed on the frame 1, measuring roller 4 by clutch shaft bearing 26, be fixed in first support 28 for first spool 27, first support 28 is fixed on by being threaded on first push rod 23, first push rod 23 moves around in sliding seat 30 by the spring 24 that is enclosed within the outside, and rolling later stage first push rod, 23 positions are by second screw rod 21 and swivel nut 22 lockings (spacing).Requirement according to the ring size, whole sliding seat 30 is adjustable on base 34, and when rolling big ring, rotatable first screw rod 20 drives sliding seats 30 and moves (being to moving to left among Fig. 6) backward, during rolling little ring, rotatable first screw rod 20 drives sliding seats 30 and moves forward.Sensor fixed axis 31 is fixed on first push rod 23, is used for the installation position displacement sensor.
As Fig. 4, Fig. 5, shown in Figure 9, described roll milling wheel mechanism comprises roll milling wheel 6, first slide block 8, ball wire bar pair 9, first reductor 10, servomotor 15, roller motor, Hooks coupling universal coupling 17, second reductor 18, gland 36, adjust pad 37, middle cam rings 38, the 3rd bearing (self-aligning roller bearing) 33, the 4th bearing 39, the 5th bearing 40, power transmission shaft 41, the left end of roll milling wheel 6 is fixed (fixing by screw) on middle cam rings 38, the right-hand member of roll milling wheel 6 is compressed by gland 36, (rolling width of whole roll milling wheel can be regulated by the thickness of adjusting pad 37 to be provided with adjustment pad 37 between gland 36 and the roll milling wheel 6, when can be implemented in the ring of rolling differing heights like this, only need to change and adjust pad 37, overlap roll milling wheel and need not to process again one), gland 36, the right-hand member of power transmission shaft 41, middle cam rings 38 is fixed together by screw, middle cam rings 38 is fixed on by the 3rd bearing (self-aligning roller bearing) 33 that (be that roll milling wheel 6 can be with power transmission shaft 41 rotations, roll milling wheel 6 is driven by power transmission shaft 41 and rotates on first slide block 8; Guide rail is installed on the frame, first slide block can slide in guide rail), first slide block 8 is provided with the transmission axis hole, the transmission axis hole on first slide block 8 is passed in the left part of power transmission shaft 41, and power transmission shaft 41 is by the 4th bearing (thrust ball bearing) 39 and the 5th bearing (self-aligning roller bearing) 40 link to each other with first slide block 8 (power transmission shaft 41 can rotate in the transmission axis hole), the left part of power transmission shaft 41 is provided with second slide block (or chute), the right part of Hooks coupling universal coupling 17 is provided with the power transmission shaft sliding eye, be provided with chute (or second slide block) in the power transmission shaft sliding eye, insert in the power transmission shaft sliding eye of Hooks coupling universal coupling 17 left part of power transmission shaft 41, and second slide block on the left part of power transmission shaft 41 is positioned at the chute (or second slide block of power transmission shaft sliding eye is positioned at the chute on the left part of power transmission shaft 41) of power transmission shaft sliding eye; The output shaft of roller motor links to each other with the input of second reductor 18, and the output shaft of second reductor 18 links to each other with Hooks coupling universal coupling 17; The output shaft of servomotor (servomotor) 15 links to each other with the input of first reductor 10, the output of first reductor 10 is linked to each other by the screw mandrel of shaft coupling with ball wire bar pair 9, the nut of ball wire bar pair 9 is fixedlyed connected (screw mandrel rotation with first slide block 8, the nut band first slide block 8 and is moved up and down, and roll milling wheel 6 moves up and down).
As Fig. 5, shown in Figure 10, described core roller mechanism comprises core roller 12, lower support housing 16, bolt 19, core roller pull bar 42, lower support main shaft 43, the 6th bearing (self-aligning roller bearing) 44, the 7th bearing (thrust ball bearing) 45, the 8th bearing (self-aligning roller bearing) 46, lower support main shaft 43 is respectively by the 6th bearing (self-aligning roller bearing) 44, the 7th bearing (thrust ball bearing) 45 and the 8th bearing (self-aligning roller bearing) 46 are fixed in the lower support housing 16, lower support housing 16 is fixed on (longitudinal separation of lower support housing 16 in frame 3 can be finely tuned by bolt 19) on the frame 3 by bolt 19, and the left end of core roller 12 is fixed on the lower support main shaft 43 (being strained by thread connection by core roller pull bar 42) by core roller pull bar 42 backward.In the ring rolling process, core roller 12 can be by the frictional force driven rotary that produces in the operation of rolling.
As shown in figure 11, on-line measurement control device (vertical ring rolling process on-line measurement control device), it comprises displacement transducer group, Programmable Logic Controller (PLC), locating module, servo-driver and control system; The displacement transducer group is made up of first displacement measurement sensor 2 and second displacement measurement sensor 11, first displacement measurement sensor 2 is installed in that (the moving chi of first displacement measurement sensor 2 is fixed on first push rod 23 on first elastic follow-up device 1 of measuring roll mechanism of the vertical ring rolling mill that can realize on-line measurement control, the scale of first displacement measurement sensor 2 is fixed on the sensor fixed axis 31 on the sliding seat 30 of first elastic follow-up device 1), second displacement measurement sensor 11 is installed on first slide block 8 of roll milling wheel mechanism of the vertical ring rolling mill that can realize on-line measurement control (the moving chi of second displacement measurement sensor 11 is fixed on first slide block 8, and the scale of second displacement measurement sensor 11 is fixed on the frame 3); The output of first displacement measurement sensor 2, second displacement measurement sensor 11 links to each other with the input interface of Programmable Logic Controller respectively by data wire, the connection of communicating by letter between Programmable Logic Controller and the locating module, the output of locating module link to each other with the control end of servo-driver (locating module control servo-driver); Control system comprises the first relay K A1, the second relay K A2, the 3rd relay K A3 and the 4th relay K A4; The first relay K A1 is connected on the 27 stitch BK+ of servo-driver, receives the command signal from servo-driver, is used to control the closure of servo brakes; The second relay K A2, the 3rd relay K A3 correspondence respectively are connected on Y0, the Y1 point of Programmable Logic Controller (PLC), reception is from the command signal of Programmable Logic Controller (PLC), the second relay K A2 and the 3rd relay K A3 are arranged on (control roller motor rotating on the power input line of roller motor of roll milling wheel mechanism of the vertical ring rolling mill that can realize on-line measurement control, work and stop), the startup of the second relay K A2 and the 3rd relay K A3 control roller motor; The 4th relay K A4 is connected on the Y2 point of Programmable Logic Controller (PLC), reception is from the command signal of Programmable Logic Controller (PLC), the 4th relay K A4 is arranged on (control servomotor rotation on the power input line of servomotor 15, work and stop), the startup of the 4th relay K A4 control servomotor; The 5th relay K A5 is a duplicate relay, is connected on the Y3 point of Programmable Logic Controller (PLC).
Figure 12 is FX series Programmable logic Controller (PLC) (PLC) wiring diagram in the on-line measurement control device, and table 3 is Programmable Logic Controller (PLC) control input and output point allocation tables.Programmable Logic Controller is responsible for and the communicating by letter of locating module; D01 and D02 are respectively the both positive and negative polarities of outside direct current 24V power supply; X0-X5 receives the input signal of displacement transducer, demarcates the real-time displacement that obtains roll milling wheel and measuring roller by unit; X10-X21 is the button of each mechanism action of control machine for rolling ring; X27 is servo Reflector, can accept the servo-driver fault-signal; Y0-Y3 is the output signal point of the actuating of relay of each motor of control; Y14-Y25 is each mechanism action indicator lamp output signal point; Y26 is the interrupt signal output point, when ring reaches appointment external diameter value, sends interrupt signal control roll milling wheel feed-disabling by this point.
Table 3:PLC control input and output point allocation table
Figure 13 is the displacement transducer wiring diagram, and D01 and D02 are respectively the both positive and negative polarities of outside direct current 24V power supply; The input/output signal of two grating chis has been obtained the acceptable 24V pulse signal of PLC afterwards by an interconnecting device conversion, utilize the high-speed counter of PLC to count to the pulse of grating chi, thereby (the grating chi 1 among Figure 13 is exactly first displacement measurement sensor to obtain the accurate displacement of roll milling wheel and measuring roller, grating chi 2 is exactly second displacement measurement sensor, and the grating chi is exactly a kind of displacement measurement sensor).
Figure 14 is the wiring diagram of FX series locating module, and table 4 is each input and output point allocation table.Locating module be responsible for PLC between communicate by letter and control servo-driver; D01 and D02 are respectively the both positive and negative polarities of outside direct current 24V power supply; D0G, LSF, LSR receive the limit switch signal of roll milling wheel guide rail respectively, prevent the roll milling wheel motion excess of stroke; X3 is used for receiving the interrupt signal from the Y26 output of PLC, when the ring size reaches requirement, stops the feed motion of roll milling wheel; The SVRD point receives the servo ready signal of servo-driver; The CLR point is used for removing the shift pulse of servo-driver, and FP and RP point can send forward and reverse impulse to servo-driver, in order to the control roll milling wheel direction of motion and movement velocity; Signal is finished in the location that the SVEND point is used for receiving from servo-driver; The PG0 point is used for receiving the zero signal from servo-driver, when roll milling wheel is back to mechanical zero, with the shift register zero clearing in the locating module.
Table 4: each input and output point allocation table of locating module FX2N-10GM
Figure 15 is the wiring diagram of servo-driver, and table 5 is each input and output point allocation table.The effect of servo-driver is the instruction that receives from PLC and locating module, and the exercises of control servomotor; D01 and D02 are respectively the both positive and negative polarities of outside direct current 24V power supply; L1, L2, L3 are the 220V AC power interfaces; L1C and L2C are servo-driver control power interfaces; / PULS point is connected with the RP point with the FP point of locating module respectively with/SIGN point, is used for the received pulse signal; / CLR is used for receiving the reset signal of locating module; + 24VIN point connects an external dc power; / SON and/ALM-RST be used for receiving by PLC send servo ON signal and fault reset signal; PCO is connected with COM4 with the PGO of positioning unit with/PCO, sends zero signal to positioning unit; The COIN+ point can send the location to positioning unit and finish signal, for next one action is prepared; The BK+ point is used to control the relay K A1 action of servo brakes, and when the servo-driver dead electricity, the automatically starting brake does not move because of factors such as inertia or gravity to keep roll milling wheel; SRDY+ links to each other with the SVRD of locating module, can send servo standby ready signal to it, and the ALM+ point links to each other with the X27 point of PLC, when servo-driver breaks down, can send alarm signal to PLC.M3 among Figure 15 represents servomotor, from the PCO of servo-driver and/PCO output zero signal gives the PGO of location module.
Table 5: each input and output point allocation table of servo-driver
Vertical ring rolling process on-line measurement control method, it comprises the steps:
1) measuring roller 4 of measuring roll mechanism that can realize the vertical ring rolling mill of on-line measurement control is arranged on first elastic follow-up device 1, measuring roller 4 moves with ring blank in the vertical ring rolling process, the displacement that first displacement measurement sensor, 2, the first displacement measurement sensors 2 are used to measure measuring roller 4 is installed on first elastic follow-up device 1; The guide roller 13 that can realize the guide roller mechanism of the vertical ring rolling mill that on-line measurement is controlled is arranged on second elastic follow-up device, and guide roller 13 moves with ring blank in the vertical ring rolling process; The displacement of roll milling wheel 6 that second displacement measurement sensor, 11, the second displacement measurement sensors 11 are used to measure the roll milling wheel mechanism of the vertical ring rolling mill that can realize on-line measurement control is installed on first slide block 8 of the roll milling wheel mechanism of the vertical ring rolling mill that can realize on-line measurement control;
2) when ring blank 5 is rolling, with the displacement of the roll milling wheel of measurement and the displacement of measuring roller collect in the Programmable Logic Controller in real time, and the following formula of substitution (3) calculates the real-time external diameter value that can obtain ring blank 5, when the real-time external diameter value of ring blank 5 reached the ring dimensional requirement, Controlled by Programmable Controller roll milling wheel feed-disabling also returned;
R
Outward=a+bX+cY+dX
2+ eY
2+ fXY (3)
R wherein
OutwardBe the real-time external diameter value of ring blank 5, X-measuring roller shift value (unit is mm), Y-roll milling wheel shift value (unit is mm), a=436～438 (being coefficient, no unit); B=0.4～0.5 (being coefficient, no unit); C=-0.2～-0.3 (being coefficient, no unit); D=0.00005～0.00008 (being coefficient, no unit); E=0.001～0.002 (being coefficient, no unit); F=0.0002～0.0004 (being coefficient, no unit).
During work, earlier ring blank 5 is enclosed within on the core roller 12, servomotor 15 promotes roll milling wheel 6 by first reductor 10, ball wire bar pair 9 and roll milling wheel first slide block 8 and does the straight-line feed motion, and roller motor drives roll milling wheel 6 and rotates by second reductor 18, Hooks coupling universal coupling 17 simultaneously.In the ring rolling process, the pass that ring blank 5 is nipped between roll milling wheel 6 and the core roller 12 continuously produces rolling deformation, make the attenuation of ring wall thickness, external diameter increases, the ring outer wall promotes guide roller 13 and measuring roller 4 retreats along the spring direction, second displacement measurement sensor 11 is installed on the slide block of roll milling wheel, first displacement measurement sensor 2 is installed on first elastic follow-up device 1, write down the displacement on the both direction respectively and pass to Programmable Logic Controller and carry out external diameter and convert.When the ring external diameter reaches given size, to send instruction control roll milling wheel feed-disabling and return by Programmable Logic Controller, the ring of roll forming is unloaded ring by device for discharging 14 from core roller 12, finish ring rolling one time.
Vertical ring rolling process on-line measurement controlling party ratio juris: set up vertical ring rolling spare geometry Mathematical Modeling, obtained central coordinate of circle formula and external diameter computing formula in the ring rolling process; Maintenance data interpolation and fitting method abbreviation the computing formula of ring external diameter, by the contrast as can be known this formula have higher precision.This formula is enrolled in the Industry Control program, when ring rolling, the roll milling wheel of measurement in real time and the displacement of measuring roller are collected in the Programmable Logic Controller, and the substitution formula calculates the real-time external diameter value that can obtain ring, when this scaled value reached the accessory size requirement, Controlled by Programmable Controller roll milling wheel feed-disabling also returned.This method is applicable to the equipment on-line measurement control of the vertical ring rolling of any specification.
(being vertical ring rolling spare geometry Mathematical Modeling schematic diagram) as shown in Figure 2, because in the operation of rolling, core roller locus is constant all the time, so get its initial point as the Mathematical Modeling coordinate system, the guiding force of guide roller is controlled by spring, it is along being the rectilinear motion at β angle with vertical direction, guide roller is servo-actuated in the operation of rolling in earlier stage, to the rolling later stage, guide roller will be locked, locked position preestablishes, this moment, the geometric center of ring produced skew under the thrust of guide roller, measuring roller moves along being on the straight line at α angle with vertical direction, supposes a virtual roll, 05 in roll milling wheel and ring contact position, 03,04 is respectively virtual roll, the center of circle of guide roller and measuring roller.Virtual ring cylindrical by setting up equation group, just can calculate central coordinate of circle value and external diameter calculated value in the ring rolling process by 05,03,04 3 point.Each size quantity such as table 1 among the figure:
Table 1: hot rolling geometric parameters numerical table
Can get 0 by Fig. 2 and table 1
5, 0
3, 0
4The coordinate figure of three points, establish the ring centre coordinate for (m n), then can be listed as following equation group:
Get by geometrical relationship and table 1: A=|O
yO |-L
2+ R
3, B=L
5-L
7Sin β, C=L
7Cos β-L
6, D=-L
9+ (L
4-R
3) sin α, E=-L
8+ (L
4-R
3) cos α.
As seen from the above table, remove R in the above-mentioned equation group
1, m, n be outside the unknown quantity, the physical dimension that participates in calculating is a known quantity all, solves:
Each size that can be got in the ring rolling process by geometrical relationship is respectively external diameter: R=R
1-R
3Wall thickness: h=|O
yO |-L
2-R
4Internal diameter: r=R-h=R
1-R
3-| O
yO|+L
2+ R
4
Though above-mentioned external diameter computing formula has obtained very big simplification, be difficult to Industry Control programmings such as PLC, must formula be simplified, obtain being suitable for working out the computing formula of PLC program.
Said method is applicable to the equipment on-line measurement control of the vertical ring rolling of any specification, and existing is example with the vertical ring rolling mill, gets above-mentioned each parameter and is respectively: R
2=350mm; R
3=30mm; R
4=40mm; L
8=307mm; L
9=438mm; / OyO/=220mm; L
5=350mm; L
6=700mm; L
7=380mm; α=55 °; β=65 °; If the range of L2 and L4 is respectively 140mm and 60mm.The computing formula match that will comprise complicated function is simplified to the form of quadratic polynomial, and then is compiled into industrial operable control program.
Obtain the external diameter fitting formula by programming as follows:
R
Outward=a+bX+cY+dX
2+ eY
2+ fXY (3)
R wherein
OutwardBe the real-time external diameter value of ring blank 5, X-measuring roller shift value (mm), Y-roll milling wheel shift value (mm), a=436～438 (being coefficient, no unit); B=0.4～0.5 (being coefficient, no unit); C=-0.2～-0.3 (being coefficient, no unit); D=0.00005～0.00008 (being coefficient, no unit); E=0.001～0.002 (being coefficient, no unit);
F=0.0002～0.0004 (being coefficient, no unit).
Fig. 3 has contrasted the result of calculation of the formula (2) of fitting formula (3) and Derivation of Mathematical Model, appoint in the drawings and get five points and compare as shown in table 2, numerical value is very approaching also, illustrated that fitting formula can satisfy the required precision of Industry Control fully, can be used for working out the Industry Control program.
Table 2: fitting formula and the contrast of calculated with mathematical model formula result of calculation
Claims (4)
1. can realize the vertical ring rolling mill of on-line measurement control, it comprises frame (3), roll milling wheel mechanism, measuring roll mechanism, guide roller mechanism, core roller mechanism and device for discharging (14), the vertical center line of measuring roll mechanism center line and lathe is 50-60 ° of angle, the vertical center line of guide roller mechanism center line and lathe is 60-70 ° of angle, the measuring roller of measuring roll mechanism (4) is positioned at the below, left side of the core roller (12) of core roller mechanism, the guide roller of guide roller mechanism (13) is positioned at the right side of the core roller (12) of core roller mechanism, the roll milling wheel of roll milling wheel mechanism (6) be positioned at the core roller mechanism core roller (12) directly over, the stripper of device for discharging (14) is enclosed within on the core roller (12) of core roller mechanism; It is characterized in that: it also comprises online measuring and controlling, the on-line measurement control device comprises the displacement transducer group, the displacement transducer group is made up of first displacement measurement sensor (2) and second displacement measurement sensor (11), first displacement measurement sensor (2) is installed on first elastic follow-up device (1) of measuring roll mechanism, and second displacement measurement sensor (11) is installed on first slide block (8) of roll milling wheel mechanism;
Described measuring roll mechanism comprises first elastic follow-up device (1), measuring roller (4), first push rod (23), clutch shaft bearing (26), first (27), first support (28), measuring roller (4) is fixed on first (27) by clutch shaft bearing (26), first (27) are fixed on first support (28), first support (28) is fixed on first push rod (23), and first push rod (23) is provided with on first elastic follow-up device (1);
Described guide roller mechanism comprises second elastic follow-up device, guide roller (13), second push rod, second bearing, second, second support, guide roller (13) by second bearing fixing on second, second is fixed on second support, second support is fixed on second push rod, and second push rod is provided with on second elastic follow-up device.
2. the vertical ring rolling mill of realizing on-line measurement control according to claim 1, it is characterized in that: described first elastic follow-up device (1) comprises first screw rod (20), second screw rod (21), swivel nut (22), spring (24), sliding seat (30), base (34), base (34) is fixed on the frame (1), the upper surface of base (34) is provided with chute, the left end of base (34) is fixed with left plate (7), left plate has first screw hole on (7), second screw hole, the 3rd slide block of sliding seat (30) bottom is positioned at the chute of base (34), the right-hand member of first screw rod (20) is threaded with sliding seat (30) after passing first screw hole on the left plate (7), first screw rod is rotary with nut on (20), in the sliding seat (30) is spring cavity (32), the left part of sliding seat (30) is provided with left push rod through hole, the right part of sliding seat (30) is provided with right push rod through hole, left side push rod through hole, right push rod through hole is connected with spring cavity (32) respectively, insert in the spring cavity (32) the right push rod through hole of the left part of first push rod (23) from sliding seat (30), be fixed with spring stop (35) on first push rod (23), spring stop (35), spring (24) lays respectively in the spring cavity (32), spring (24) is enclosed within on the left part of first push rod (23), the left end of spring (24) contacts with sliding seat (30), the right-hand member of spring (24) contacts with spring stop (35), the right-hand member of second screw rod (21) is threaded with swivel nut (22) after passing second screw hole on the left plate (7), and second screw rod is rotary with nut on (21).
3. the vertical ring rolling mill of realizing on-line measurement control according to claim 1, it is characterized in that: described roll milling wheel mechanism comprises roll milling wheel (6), first slide block (8), ball wire bar pair (9), first reductor (10), servomotor (15), roller motor, Hooks coupling universal coupling (17), second reductor (18), gland (36), adjust pad (37), middle cam rings (38), the 3rd bearing (33), the 4th bearing (39), the 5th bearing (40), power transmission shaft (41), the left end of roll milling wheel (6) is fixed on the middle cam rings (38), the right-hand member of roll milling wheel (6) is compressed by gland (36), be provided with between gland (36) and the roll milling wheel (6) and adjust pad (37), gland (36), the right-hand member of power transmission shaft (41), middle cam rings (38) is fixed together by screw, middle cam rings (38) is fixed on first slide block (8) by the 3rd bearing (33), first slide block (8) is provided with the transmission axis hole, the transmission axis hole on first slide block (8) is passed in the left part of power transmission shaft (41), and power transmission shaft (41) is linked to each other with first slide block (8) with the 5th bearing (40) by the 4th bearing (39), the left part of power transmission shaft (41) is provided with second slide block, the right part of Hooks coupling universal coupling (17) is provided with the power transmission shaft sliding eye, be provided with chute in the power transmission shaft sliding eye, insert in the power transmission shaft sliding eye of Hooks coupling universal coupling (17) left part of power transmission shaft (41), and second slide block on the left part of power transmission shaft (41) is positioned at the chute of power transmission shaft sliding eye; The output shaft of roller motor links to each other with the input of second reductor (18), and the output shaft of second reductor (18) links to each other with Hooks coupling universal coupling (17); The output shaft of servomotor (15) links to each other with the input of first reductor (10), and the output of first reductor (10) is linked to each other by the screw mandrel of shaft coupling with ball wire bar pair (9), and the nut of ball wire bar pair (9) is fixedlyed connected with first slide block (8).
4. the vertical ring rolling mill of realizing on-line measurement control according to claim 1 is characterized in that: described on-line measurement control device, and it comprises displacement transducer group, Programmable Logic Controller, locating module, servo-driver and control system; The output of first displacement measurement sensor (2), second displacement measurement sensor (11) links to each other with the input interface of Programmable Logic Controller respectively by data wire, the connection of communicating by letter between Programmable Logic Controller and the locating module, the output of locating module links to each other with the control end of servo-driver; Control system comprises first relay, second relay, the 3rd relay and the 4th relay; First relay is connected on the servo-driver, receives the command signal from servo-driver, is used to control the closure of servo brakes; Second relay, the 3rd relay correspondence respectively are connected on the Programmable Logic Controller, reception is from the command signal of Programmable Logic Controller, second relay and the 3rd relay are arranged on the power input line of roller motor of roll milling wheel mechanism of vertical ring rolling mill, the startup of second relay and the 3rd relay control roller motor; The 4th relay is connected on the Programmable Logic Controller, receives the command signal from Programmable Logic Controller, and the 4th relay is arranged on the power input line of servomotor (15), the startup of the 4th relay control servomotor.
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| DE2222606C2 (en) * | 1972-05-09 | 1985-06-27 | Thyssen Industrie Ag, 4300 Essen | Ring rolling mill |
| JP3624480B2 (en) * | 1995-08-30 | 2005-03-02 | 日本精工株式会社 | Ring body forming apparatus and ring body forming method |
| JPH11285762A (en) * | 1998-04-02 | 1999-10-19 | Mitsubishi Nagasaki Mach Co Ltd | Automatically vertical ring-forming machine |
| CN2412677Y (en) * | 1998-07-14 | 2001-01-03 | 沈芝蓉 | Ring roller |
| CN100404162C (en) * | 2006-09-01 | 2008-07-23 | 武汉理工大学 | Feeding rate and work-piece size controlling means during cold ring rolling process |
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