CN100448657C - Digital control method for spiral pressure machine transmission and digital control spiral pressure machine - Google Patents
Digital control method for spiral pressure machine transmission and digital control spiral pressure machine Download PDFInfo
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- CN100448657C CN100448657C CNB2005101045994A CN200510104599A CN100448657C CN 100448657 C CN100448657 C CN 100448657C CN B2005101045994 A CNB2005101045994 A CN B2005101045994A CN 200510104599 A CN200510104599 A CN 200510104599A CN 100448657 C CN100448657 C CN 100448657C
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/18—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by screw means
- B30B1/186—Control arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B30—PRESSES
- B30B—PRESSES IN GENERAL
- B30B1/00—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen
- B30B1/40—Presses, using a press ram, characterised by the features of the drive therefor, pressure being transmitted directly, or through simple thrust or tension members only, to the press ram or platen by wedge means
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Abstract
The screw extruder drive digital control comprises inputting running data by the operator and work station control computer control motor running, with the motor using switch magnetic resistance speed regulating motor, based on the input data, through the calculation of the work station control computer control motor, switch magnetic resistance speed regulating motor driving the extrusion of the screw. Switch magnetic speed regulating motor provides power to spiral compressor, through regulating angular displacement and velocity of the speed regulating motro to control the displacement and speed change of the slide of the compressor, realizing digital control fo the spiral compressor with simple structure, free from speed regulation, easy control of the slide displacement velocity.
Description
Technical field
The present invention relates to a kind of numerical control method and digital control helical forcing press of fly press transmission, belong to field of material molding equipment.
Background technology
Electric screw press has the shortest driving-chain and higher efficient because of not using inefficient frictional drive, makes the various countries technical staff constantly study.Germany Lasco company and Weingarten company produced the electric screw press that adopts the frequency control motor technology, and Japanese Enomoto company has also developed the fly press of AC servo machinery driving calendar year 2001.The patent No. that on July 14th, 2004, State Intellectual Property Office of the People's Republic of China was authorized is that ZL03254142.2, name are called the utility model patent of " electric screw press ", it adopts AC servomotor to drive fly press by gear drive, because of motor control system cost height, control circuit complexity, rapid wear is difficult to promote.The subject matter that above-mentioned and existing fly press exists is that the angular displacement of screw rod and displacement and speed that angular speed is slide block can not realize numerical control.There is not to reach the fly press of realizing slider displacement and speed numerical control in the industrial production at present.
Summary of the invention
The technical problem to be solved in the present invention is: provide a kind of fly press that can make to realize slider displacement and the easy numerical control of speed, the numerical control method that blow energy is controlled, energy freely be controlled process velocity solves the insoluble for a long time technical barrier in this area.
Another technical problem that the present invention will solve provide a kind of simple in structure, cost is low, high efficiency realizes the fly press of above-mentioned numerical control.
The technical solution adopted for the present invention to solve the technical problems is: this fly press transmission numerical control method, comprise that operating personnel import service data, the operation of industry control microcomputer control motor, motor adopts magnetic resistance switch speed-adjustable motor, it is characterized in that: the data that provide according to input equipment, through the computing of industry control microcomputer, the action of gauge tap magneto resistance speed-regulating motor, magnetic resistance switch speed-adjustable motor drives the fly press action, the data that described input equipment provides are included in input and setting slide block blow speed v on the industry control microcomputer
1, ram travel S and ram travel times N running parameter numerical value, and hand push button plate and foot push partitioned signal data, magnetic resistance switch speed-adjustable motor is equipped with angular displacement sensor, motor controller is given the magnetic resistance switch speed-adjustable motor control instruction, angular displacement, angular speed and the starting of control motor, stop, just changeing, counter-rotating, acceleration, deceleration, crawl and position keep.
The computing of described industry control microcomputer is according to formula
α
0＝iα、ω
0＝iω，
And α
i=k
iA, i=1,2,3 and
I=2,3, by S, v
1, N calculates the magneto resistance speed-regulating motor corner displacement α of each control point switch of screw rod angular displacement
0, angular velocity omega
0, blow energy E parameter, the industry control microcomputer instructs in the screw rod angular displacement alpha
1Make the angular velocity omega of magnetic resistance switch speed-adjustable motor
0Reach by setting value v
1The formula of pressing
ω
01=i ω
1Calculated value ω
01, make the movement velocity of slide block reach blow speed setting value v
1, wherein α is the screw rod corner displacement, and A is a slide block one-stroke screw rod corner displacement, and ω is a screw rod angular speed, and s is a slider displacement, and v is a ram speed, and i is a gearratio, α
0The motor corner displacement, ω
0Be motor angle speed, v
1Be blow speed, ω
1Screw rod angular speed when hitting, S is a ram travel, and N is the ram travel number of times, and n is that the slide block screw rod that makes a round trip calculates rotating speed, and h is the helical pitch of screw flight, and J is the rotary inertia of flywheel, screw rod, and m is the quality of slide block; α
iBe screw rod corner displacement control point, ω
1Screw rod angular speed during for strike, k
iBe screw rod corner displacement control point coefficient, k
i' be screw rod angular speed control point coefficient, i=1,2,3.
The described data that provide according to input equipment comprise that also after the fly press slide block made a round trip, slide block reached top dead center position when pressing or step on when clicking button, and the value of screw rod angle of twist displacement is α=α
A=A is a motor counter-rotating angular displacement alpha
0=α
0ADuring=iA, the braking of industry control microcomputer gauge tap magneto resistance speed-regulating motor, the brake braking, slide block is parked in top dead centre; When pressing or stepping on the double hit button, after slide block made a round trip, motor was in the counter-rotating angular displacement alpha
0=α
0AWhen=iA makes slide block reach top dead center position, the magnetic resistance switch speed-adjustable motor braking, brake is not braked, and industry control microcomputer control motor is just changeing the enforcement second strike; For the setting value of ram travel times N, the industry control microcomputer calculates screw speed n, calculates each control point α of motor angle displacement
0iAngular velocity omega
0iAfter issue motor controller; When mode transfer, die trial, slide block blow speed v is set in input earlier
1, ram travel S, ram travel times N numerical value, the adjusting microinching button keeps pressing, the instruction of industry control microcomputer output crawl, the speed motion of slide block to set, when the adjusting microinching button lifts, crawl instruction stopping output, braking instruction sends, magnetic resistance switch speed-adjustable motor and brake braking, slide block stops.
The digital control helical forcing press that above-mentioned numerical control method is controlled, comprise fly press and industry control microcomputer, it is characterized in that: magnetic resistance switch speed-adjustable motor is set, magnetic resistance switch speed-adjustable motor connects fly press by transmission mechanism, motor controller connects magnetic resistance switch speed-adjustable motor and industry control microcomputer, data collecting card connects sensor respectively, button panel, brake and industry control microcomputer, described magnetic resistance switch speed-adjustable motor connects fly press by transmission mechanism, be meant that magnetic resistance switch speed-adjustable motor is coupled as one by shaft coupling and flywheel, the flywheel connecting screw rod, force cell is installed in the workbench, the infrared heat electric transducer is installed on the fuselage in operational hazards district, brake is fixed on the fuselage, and its brake block is embraced on flywheel.
Screw rod cooperates with the nut screw pair, and nut and voussoir are coupled as one, and the dovetail slideway of voussoir and the dovetail slideway of slide block are slidingly matched.
Described magnetic resistance switch speed-adjustable motor is installed on the fuselage, the magnetic resistance switch speed-adjustable motor output shaft links by shaft coupling and flywheel, screw rod is positioned at fuselage central shaft position and is installed on the fuselage by thrust bearing, the screw rod upper end is connected as one with flywheel, screw rod cooperates with the nut screw pair, nut and slide block are coupled as one, and are symmetrically installed with guide rail with central shaft in the fuselage, and guide rail and slide block are slidingly matched.
Compared with prior art, the beneficial effect that this fly press transmission numerical control method and digital control helical forcing press are had is: provide the helical pressure mechanomotive force by magnetic resistance switch speed-adjustable motor is set, the angular displacement and the angular speed of the instant gauge tap magneto resistance speed-regulating motor of electric machine controller, the account form of industry control microcomputer by setting, result of calculation is passed through the displacement of motor controller controls fly press slide block and the variation of speed, magnetic resistance switch speed-adjustable motor connects fly press by transmission mechanism, the digital control helical forcing press of this method design, switched reluctance motor is by the rotation of flywheel drive screw, greatly simplify the structure of fly press, advantage with blow speed and blow energy digit control, the user can be according to the difference of converted products material, the difference of technological requirement and strain energy of distortion different, input and setting running parameter, the angular displacement of direct numerical control magnetic resistance switch speed-adjustable motor and screw rod and angular speed, numerical control slider displacement and speed, make blow speed, blow energy is by the output of input setting value, product forming accuracy height, tolerance is little, reduce the residue blow energy to mould, the active force of forcing press and ground prolongs die life.The digital control helical press ram number of strokes can be by user's input setting voluntarily according to demand, and ram travel number of times digit control can realize stepless speed regulation in numerical control ground.The ram travel digit control is utilized the memory function of industry control microcomputer, accurately remembers the downward single pass screw rod value of angular displacement of slide block, when slide block makes progress backhaul, and effectively anti-limited slip block upper punch.In addition, this fly press does not have the pneumatic gearing system, does not have clutch; do not need to be provided with overload protection arrangement yet,, greatly improved the operating efficiency of fly press not with the irrelevant indirect energy consumption of slide block movement; reduced and used electric consumption, energy savings.Industry control microcomputer IPC support programs are abundant, and it is very convenient to network, and are fit to the demand of Long-distance Control and manufacturing informatization.
Description of drawings
Fig. 1 is the fundamental diagram of digital control helical forcing press embodiment 1 of the present invention.
Fig. 2 is the control block diagram of Fig. 1.
Fig. 3 is the circuit theory diagrams of Fig. 1.
Fig. 4 is the fundamental diagram of digital control helical forcing press embodiment 2 of the present invention.
Fig. 5 is the fundamental diagram of digital control helical forcing press embodiment 3 of the present invention.
Fig. 6 is the fundamental diagram of digital control helical forcing press embodiment 4 of the present invention.
Fig. 1-the 3rd, the numerical control method of fly press of the present invention and the most preferred embodiment of numerical control screw press are among Fig. 1-6: 1 (U1) magnetic resistance switch speed-adjustable motor, 2 flywheel 3 brakes, 4 bearing 5 screw rods, 6 nut 7 slide blocks, 8 guide rail 9 workbench 10 (T2) pressure sensors, 11 foot push plate 12 (T1) infrared heat electric transducer 13 fuselages, 14 hand push button plate 15 (U2) motor controller 16 (U5) keyboard 17 (U4 and U6) industry control microcomputers and display screen 18 shaft couplings 19 pinions 20 voussoir U3 data acquisition K card U5 keyboard U7 power amplifier S1-S3 switch S 4 three-pole switch T3 current sensor KM1 coils 1 contact Z1 brakes.
The specific embodiment
Numerical control method and digital control helical forcing press below in conjunction with Fig. 1-6 pair fly press of the present invention are described further:
Embodiment 1:
As shown in Figure 1, magnetic resistance switch speed-adjustable motor 1 is installed on the fuselage 13, output shaft links by shaft coupling 18 and flywheel 2, screw rod 5 is positioned at fuselage 13 central shaft positions and is installed on the fuselage 13 by bearing 4, screw rod 5 upper ends and flywheel 2 are connected as one, screw rod 5 and nut 6 cooperate with screw pair, nut 6 is coupled as one with slide block 7, be symmetrically installed with guide rail 8 with central shaft in the fuselage 13, guide rail 8 is slidingly matched with slide block 7, and force cell 10 is installed in the workbench 9, and infrared heat electric transducer 12 is installed on the fuselage 13 in operational hazards district, brake 3 is fixed on the fuselage 13, and its brake block is embraced on flywheel 2.
As shown in Figure 2, the industry control microcomputer connects data collecting card, motor controller, keyboard and display screen, data acquisition card connection brake, hand push button plate, foot push plate and sensor, motor controller connects magnetic resistance switch speed-adjustable motor, magnetic resistance switch speed-adjustable motor connects fly press, and fly press connects brake and sensor.Fly press is driven by magnetic resistance switch speed-adjustable motor, magnetic resistance switch speed-adjustable motor is driven by electric machine controller, electric machine controller is controlled by the industry control microcomputer, by keyboard running parameter is imported the industry control microcomputer, sensor signal on current sensor and the forcing press is passed to data collecting card, hand push button and foot push signal are passed to data collecting card, the signal of data collecting card is passed to the industry control microcomputer, industry control microcomputer process information shows by display screen, and output order control electric machine controller and brake, to reach the purpose of industry control microcomputer digital control helical forcing press.
As shown in Figure 3, the A1 of magnetic resistance switch speed-adjustable motor U1, A2, B1, B2, C1, the C2 end connects the A1 of motor controller U2, A2, B1, B2, C1, the C2 end, the angle position signal end of magnetic resistance switch speed-adjustable motor U1 connects the ANG1 end of motor controller U2, the RS232 signal end of magnetic resistance switch speed-adjustable motor U1 connects the RS232 pin of industry control microcomputer U4, clicking of hand push button plate and foot push plate, double hit, brake three press button S1-S3, be connected respectively to the DI4 of data collecting card U3, DI6, the DI8 pin, infrared heat electric transducer T1, force cell T2 respectively with the AI0 of data collecting card U3, the AI2 pin.Three tunnel current sensor T3 links to each other with AI4, AI6, the AI8 pin of data collecting card U3 respectively, brake Z1 connecting terminal K1, be connected with power amplifier U7 between the D014 of coil KM1 and data collecting card U3, the output of data collecting card U3 links to each other with the PCI main line slot of industry control microcomputer U4 mainboard.Keyboard U5 and display screen U6 are connected in industry control microcomputer U4.
Switched reluctance motor U1 is a SRM series, and motor controller U2 is a SRD series, and data collecting card U3 is PCI-1710, and pressure sensor T2 is a resistance-strain type.Infrared heat electric transducer T1 is a pyroelectric sensor.Also dead-man pedal or button can be set.Industry control microcomputer U4 is the IPC610-P42.0/256M/40G workbench, and industry control microcomputer U4 also substitutes computational intelligence unit such as available single-chip microcomputer, and the data collecting card U3 also data acquisition board or the device of available other form substitutes.When the display screen of motor controller and keyboard change universal display screen and keyboard into, data collecting system and motor controller can be integrated in the casing, promptly data collecting card, display screen, keyboard, industry control microcomputer and motor controller are integrated into a casing.Display screen also can adopt touch display screen, and keyboard or button panel are become one.The IPC support programs are abundant, and it is very convenient to network, and are fit to the demand of Long-distance Control and manufacturing informatization.
Embodiment 2:
As shown in Figure 4, digital control helical forcing press of the present invention, magnetic resistance switch speed-adjustable motor 1 is installed on the fuselage 13, magnetic resistance switch speed-adjustable motor 1 output shaft links by shaft coupling 18 and pinion 19, pinion 19 is meshed with flywheel 2, screw rod 5 upper ends and flywheel 2 are connected as one, screw rod 5 and nut 6 cooperate with screw pair, nut 6 is coupled as one with slide block 7, is symmetrically installed with guide rail 8 with central shaft in the fuselage 13, and guide rail 8 is slidingly matched with slide block 7, force cell 10 is installed in the workbench 9, infrared heat electric transducer 12 is installed on the fuselage 13 in operational hazards district, and brake 3 is fixed on the fuselage 13, and its brake block is embraced on the brake(-holder) block of flywheel 2.
Embodiment 3-4:
Shown in Fig. 5-6, the change of fly press is mainly on transmission mechanism, for example magnetic resistance switch speed-adjustable motor 1 output shaft connects with flywheel 2 mutually by shaft coupling 18 among Fig. 5, screw rod 5 is connected as one with flywheel 2, screw rod 5 is installed on the fuselage 13 by thrust bearing 4, screw rod 5 and nut 6 cooperate with screw pair, and nut 6 is coupled as one with voussoir 20, and voussoir 20 is slidingly matched by the dovetail slideway with slide block 7.Guide rail 8 is installed in the fuselage 13, guide rail 8 is slidingly matched with slide block 7, and force cell 10 is installed in the workbench 9, and infrared heat electric transducer 12 is installed on the fuselage 13 in operational hazards district, brake 3 is fixed on the fuselage 13, and its brake block is embraced on the brake(-holder) block of flywheel 2.When screw rod 5 rotations, nut 6 moves with vertical line is angled along screw rod 5 axis oblique lines.Nut 6 is coupled as one with voussoir 20, voussoir 20 is moved along screw axis, voussoir 20 moves and is decomposed into along continuous straight runs and straight line vertically and moves, the bottom surface slideway of voussoir and the end face slideway of slide block 7 are slidingly connected, slide block 7 is in vertical guide rail, and the motion of the vertical direction of voussoir 20 makes slide block 7 move both vertically along guide rail.On Fig. 5, increase pinion 19 and flywheel 2 engaged transmission among Fig. 6.
Fly press transmission numerical control method of the present invention, mainly contain: owing in the magnetic resistance switch speed-adjustable motor angular displacement sensor is installed, industry control microcomputer instruction motor controller will be given control instruction of magnetic resistance switch speed-adjustable motor every a step angle (as 3.75 ° or 7.5 °).Before the work beginning, the user is according to material, technology and the strain energy of distortion requirement of converted products, by keyboard input and setting slide block blow speed v
1, ram travel S, ram travel times N numerical value, industry control microcomputer by formula (1)-(9) calculates the parameter such as the motor corner displacement α of each required control in control point of screw rod angular displacement
0, angular velocity omega
0, blow energy E, angular displacement, angular speed and start-stop and rotating, speed governing, the adjusting microinching of industry control microcomputer instruction numerical-control motor and screw rod, click, double hit and braking function, export required motion and blow energy.Formula:
n
0＝in α
0＝iα ω
0＝iω (5)
α
i＝k
iA，i＝1，2，3， (7)
α
0i＝iα
i，ω
0i＝iw
i，i＝1，2，3 (9)
α is the screw rod angular displacement in the formula, and ω is a screw rod angular speed, and s is a slider displacement, and v is a ram speed, and h is the helical pitch of screw flight, and E is a blow energy, and J is the rotary inertia of flywheel, screw rod, and m is the quality of slide block, v
1Be slide block blow speed, ω
1Screw rod angular speed when hitting, S is a ram travel, and N is the ram travel number of times, and n is that the slide block screw rod that makes a round trip calculates rotating speed, and A is a slide block one-stroke screw rod corner displacement, i is gearratio (i=1 when motor reel and screw shaft are coaxial), α
0The motor corner displacement, ω
0Be motor angular velocity, n
0Be the slide block motor mean speed that makes a round trip, α
iBe screw rod corner displacement control point, when screw rod is just changeing slide block down, α
1=k
1A, α when screw rod counter-rotating slide block is up
2=k
2A, α
3=k
3A, ω
iFor the angular displacement of screw rod control point is α
iThe time angular speed, just changeing the screw rod angular displacement alpha
1The time screw rod angular velocity omega
1, counter-rotating screw rod angular displacement alpha
2The time screw rod angular velocity omega
2, the screw rod angular displacement alpha
3The time screw rod angular velocity omega
3, k
iAnd k
i' be control point coefficient, wherein k
1=0.9, k
2=0.8-0.9, k
3=0.95, k
2'=0.4-0.5, k
3'=0.01-0.001; α
0iBe Electric Machine Control point corner displacement, ω
0iBe Electric Machine Control point angular speed.
At first the user imports and sets slide block blow speed v
1, ram travel S, ram travel times N numerical value, just changeing on A and the counter-rotating A at the screw rod corner displacement that slide block makes a round trip, three screw rod corner displacement control point α are set
1, α
2, α
3, industry control microcomputer by formula (1)-(9) calculates the value of each parameter such as angular displacement, angular speed.Initial slide block is in the positive corner displacement α of top dead centre screw rod=0 place, the positive corner displacement α of motor
0=0, during the work starting, magnetic resistance switch speed-adjustable motor is just changeing starting, and flywheel quickens energy storage gradually, and slide block moves downward along guide rail, and the industry control microcomputer instructs in the screw rod angular displacement alpha
1Make the angular velocity omega of magnetic resistance switch speed-adjustable motor
0Reach by setting value v
1By formula
ω
01=i ω
1Calculated value ω
01, make the movement velocity of slide block reach blow speed setting value v
1, industry control microcomputer gauge tap magneto resistance speed-regulating motor is in the motor angular displacement alpha
01Motor A, B, C phase current are turn-offed in the position, and the energy storage of slide block dependence flywheel and inertia are with blow speed v
1Hit, after fly press hit, screw rod angular speed and ram speed were 0 o'clock, screw rod counter-rotating angular displacement alpha=0, motor counter-rotating angular displacement alpha
0=0, industry control microcomputer gauge tap magneto resistance speed-regulating motor starting counter-rotating is quickened, and screw speed reaches by formula
The tachometer value that calculates, counter-rotating promote slide block to the screw rod angular displacement alpha
2It is motor counter-rotating angular displacement alpha
02Behind the position, the instruction of industry control microcomputer makes magnetic resistance switch speed-adjustable motor be decelerated to ω
02, in the screw rod angular displacement alpha
3It is motor counter-rotating angular displacement alpha
03The position, the magnetic resistance switch speed-adjustable motor rotational speed omega
03Be bordering on 1r/min, to top dead centre screw rod counter-rotating angular displacement alpha
A=A is a motor counter-rotating angular displacement alpha
0ADuring the position, braking of industry control microcomputer command switch magneto resistance speed-regulating motor and brake braking, slide block stops.
When pressing or step on when clicking button, after the fly press slide block made a round trip, slide block reached top dead center position, screw rod counter-rotating angular displacement alpha=α
A=A is a motor counter-rotating angular displacement alpha
0=α
0ADuring=iA, the braking of industry control microcomputer gauge tap magneto resistance speed-regulating motor, the brake braking, slide block is parked in top dead centre.
When pressing or stepping on the double hit button, after slide block 7 made a round trip, magnetic resistance switch speed-adjustable motor was a motor counter-rotating angular displacement alpha at screw rod angle of twist displacement A
0=α
0AWhen=iA makes slide block reach top dead center position, magnetic resistance switch speed-adjustable motor 1 braking, brake 3 is not braked, and industry control microcomputer 17 control motor are just changeing the enforcement second strike.
During for the setting value of ram travel times N, industry control microcomputer 17 by formula (4), (5) calculates magnetic resistance switch speed-adjustable motor 1 and calculates rotation speed n
0Be worth, calculate the angular velocity omega at each control point of angular displacement
0iAfter issue motor controller.
Corresponding to embodiment among the present invention 3 and embodiment 4, because the direction of screw rod 5 and the direction of motion of slide block 7 are angled, therefore when parameters such as the displacement of calculating slide block 7, speed, should be taken into account the projection relation of parameter on this angle of screw rod and nut transmission.
When mode transfer, die trial, set slide block blow speed v earlier
1, ram travel S, ram travel times N numerical value, the adjusting microinching button keeps pressing, the 17 output crawls instructions of industry control microcomputer, the speed motion of slide block 7 to set; When the adjusting microinching button lifts, crawl instruction stopping output, braking instruction sends, magnetic resistance switch speed-adjustable motor 1 and brake 3 brakings, slide block 7 stops.
When the angular displacement that rotated and reverse when magnetic resistance switch speed-adjustable motor was iA, counter increased 1.Initial set value can be 0.
Realize the digital control helical forcing press of above-mentioned numerical control method, the operation principle and the course of work are as follows:
The numerical value of ram travel, blow speed and ram travel number of times is set in the input of user's keyboard, the industry control microcomputer calculates magnetic resistance switch speed-adjustable motor corner displacement control point and the magnitude of angular velocity when the corner displacement control point by ram travel, blow speed value and ram travel number of times, by the industry control microcomputer magnetic resistance switch speed-adjustable motor rotating speed is implemented speed governing, to obtain the slide block movement setting value of user's input, reach the function of numerical control ram travel, blow speed, blow energy and ram travel number of times.
The signal of current sensor T3 is after data collecting card U3 enters industry control microcomputer U4, and the current values of input switch magneto resistance speed-regulating motor U1 is shown by display screen U6.
When pressing or stepping on actuator button or stepping on dead-man pedal, actuating signal is by the switching value DI port input industry control microcomputer U4 of data collecting card U3, industry control microcomputer U4 sends out braking instruction, brake 3 braking flywheels 2, motor controller U2 brake switch magneto resistance speed-regulating motor U1 stops on the position of being braked slide block 7.
When pressing when returning button, the magnetic resistance switch speed-adjustable motor counter-rotating, the fly press slide block is recoil movement at a slow speed.Infrared heat electric transducer T1 is arranged on the fly press hazardous area; when having detected human body and entered in the hazardous area; infrared heat electric transducer T1 gives the industry control microcomputer U4 signal of telecommunication; the alarm lamp of industry control microcomputer U4 is bright; and send alarm sound; industry control microcomputer U4 sends braking instruction; magnetic resistance switch speed-adjustable motor 1 and brake 3 brakings; the fly press Braking mode; oppositely rotation at a slow speed of magnetic resistance switch speed-adjustable motor then; slide block 7 rollbacks are effectively protected operator's safety.
Force cell is provided with 10 in workbench; its signal of telecommunication analog quantity input data collecting card U3; numerical value is presented on the display screen in real time; the microcomputer of industry control simultaneously compares force value and specified value of compressive stress; when force value during greater than rated value; promptly transship; the alarm lamp of industry control microcomputer is bright, sends the alarm sound, and the industry control microcomputer is sent out braking instruction; magnetic resistance switch speed-adjustable motor 1 and brake 3 brakings; the fly press Braking mode, oppositely rotation at a slow speed of magnetic resistance switch speed-adjustable motor then, slide block rollback; equipment and mould are effectively protected in unloading.
On the keyboard, ad hoc button has 5, is respectively: when (1) adjusting microinching dress mould, die trial, keep pressing, slide block moves at a slow speed; Lift, slide block stops.When (2) clicking, whenever click the slide block round trip.(3) after double hit is pressed, the slide block continuous motion.(4) braking motor and brake are braked simultaneously.(5) returning slide block moves up slowly.Wherein click, double hit, braking and hand push button and the chain control of foot push.The F1 key assignments of keyboard is double hit, and F3 is set at and clicks, and F4 is set at adjusting microinching, and F8 is set at and returns, and the F12 key assignments is braking (stopping).
The display screen pull-down menu shows size, rotating speed, blow speed, blow energy, hitting power, ram travel, ram travel number of times, counting, alarm nine category informations of motor current in real time, and microcomputer generates production report automatically.
The present invention can be used for various plant equipment such as single screw rod, twin-screw and the multiscrew structure of fly press class, single sliding block, Double-slider and multi-slide structure, vertical, horizontal and wedge-type structure; The helical pressure that can be used for metal material shaping (or moulding) Machine equipment also can be used for the helical pressure machine equipment that nonmetallic materials are shaped, such as powder pressing, refractory material base, pottery system The helical pressure machine equipment (such as brick machine) of base class. The wedge-type fly press also can bear certain eccentric load, has solved spiral shell The spinning force machine can not bear eccentrically loaded problem. Compare with drop press, no bottom dead centre needn't be adjusted mold height, no Can produce vexed car phenomenon; Compare with the fly press of electric liquid mixed drive, no hydraulic pressure drives, and does not exist hydraulic fluid leak to pollute Environment and the hydraulic fault problem occurs; Compare no frictional drive loss and friction band rapid wear phenomenon with the friction-type fly press.
Claims (6)
1, fly press transmission numerical control method, comprise that operating personnel import service data, the operation of industry control microcomputer control motor, motor adopts magnetic resistance switch speed-adjustable motor, it is characterized in that: the data that provide according to input equipment, through the computing of industry control microcomputer, the action of gauge tap magneto resistance speed-regulating motor, magnetic resistance switch speed-adjustable motor drives the fly press action, the data that described input equipment provides are included in input and setting slide block blow speed v on the industry control microcomputer
1, ram travel S and ram travel times N running parameter numerical value, and hand push button plate and foot push partitioned signal data, magnetic resistance switch speed-adjustable motor is equipped with angular displacement sensor, motor controller is given the magnetic resistance switch speed-adjustable motor control instruction, angular displacement, angular speed and the starting of control motor, stop, just changeing, counter-rotating, acceleration, deceleration, crawl and position keep.
2, fly press transmission numerical control method according to claim 1, it is characterized in that: the computing of described industry control microcomputer is according to formula
α
0＝iα、ω
0＝iω，
And α
i=k
iA, i=1,2,3 and
I=2,3, by S, v
1, N calculates the magneto resistance speed-regulating motor corner displacement α of each control point switch of screw rod angular displacement
0, angular velocity omega
0, blow energy E parameter, the industry control microcomputer instructs in the screw rod angular displacement alpha
1Make the angular velocity omega of magnetic resistance switch speed-adjustable motor
0Reach by setting value v
1By formula
ω
01=i ω
1Calculated value ω
01, make the movement velocity of slide block reach blow speed setting value v
1, wherein α is the screw rod corner displacement, and A is a slide block one-stroke screw rod corner displacement, and ω is a screw rod angular speed, and s is a slider displacement, and v is a ram speed, and i is a gearratio, α
0The motor corner displacement, ω
0Be motor angle speed, v
1Be blow speed, ω
1Screw rod angular speed when hitting, S is a ram travel, and N is the ram travel number of times, and n is that the slide block screw rod that makes a round trip calculates rotating speed, and h is the helical pitch of screw flight, and J is the rotary inertia of flywheel, screw rod, and m is the quality of slide block; α
iBe screw rod corner displacement control point, ω
1Screw rod angular speed during for strike, k
iBe screw rod corner displacement control point coefficient, k
iBe screw rod angular speed control point coefficient, i=1,2,3.
3, fly press transmission numerical control method according to claim 1 is characterized in that: when pressing or step on when clicking button, after the fly press slide block made a round trip, slide block reached top dead center position, and the value of screw rod angle of twist displacement is α=α
A=A is a motor counter-rotating angular displacement alpha
0=α
0ADuring=iA, the braking of industry control microcomputer gauge tap magneto resistance speed-regulating motor, the brake braking, slide block is parked in top dead centre; When pressing or stepping on the double hit button, after slide block made a round trip, motor was in the counter-rotating angular displacement alpha
0=α
0AWhen=iA makes slide block reach top dead center position, the magnetic resistance switch speed-adjustable motor braking, brake is not braked, and industry control microcomputer control motor is just changeing the enforcement second strike; For the setting value of ram travel times N, the industry control microcomputer calculates screw speed n, calculates each control point α of motor angle displacement
0iAngular velocity omega
0iAfter issue motor controller; When mode transfer, die trial, slide block blow speed v is set in input earlier
1, ram travel S, ram travel times N numerical value, the adjusting microinching button keeps pressing, the instruction of industry control microcomputer output crawl, the speed motion of slide block to set, when the adjusting microinching button lifts, crawl instruction stopping output, braking instruction sends, magnetic resistance switch speed-adjustable motor and brake braking, slide block stops.
4, the digital control helical forcing press that numerical control method according to claim 1 is controlled, comprise fly press and industry control microcomputer, it is characterized in that: magnetic resistance switch speed-adjustable motor is set, magnetic resistance switch speed-adjustable motor connects fly press by transmission mechanism, motor controller connects magnetic resistance switch speed-adjustable motor and industry control microcomputer, data collecting card connects sensor respectively, button panel, brake and industry control microcomputer, described magnetic resistance switch speed-adjustable motor connects fly press by transmission mechanism, be meant that magnetic resistance switch speed-adjustable motor (1) is coupled as one by shaft coupling (18) and flywheel (2), flywheel (2) connecting screw rod (5), force cell (10) is installed in the workbench (9), infrared heat electric transducer (12) is installed on the fuselage (13) in operational hazards district, brake (3) is fixed on the fuselage (13), and its brake block is embraced on flywheel (2).
5, digital control helical forcing press according to claim 4, screw rod (5) cooperates with nut (6) screw pair, and nut (6) is coupled as one with voussoir (20), and the dovetail slideway of the dovetail slideway of voussoir (20) and slide block (7) is slidingly matched.
6, digital control helical forcing press according to claim 4, it is characterized in that: described magnetic resistance switch speed-adjustable motor (1) is installed on the fuselage (13), magnetic resistance switch speed-adjustable motor (1) output shaft links by shaft coupling (18) and flywheel (2), screw rod (5) is positioned at fuselage (13) central shaft position and is installed on the fuselage (13) by thrust bearing (4), screw rod (5) upper end is connected as one with flywheel (2), screw rod (5) cooperates with nut (6) screw pair, nut (6) is coupled as one with slide block (7), be symmetrically installed with guide rail (8) with central shaft in the fuselage (13), guide rail (8) is slidingly matched with slide block (7).
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| CNB2005101045994A CN100448657C (en) | 2005-11-25 | 2005-11-25 | Digital control method for spiral pressure machine transmission and digital control spiral pressure machine |
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| CNB2005101045994A CN100448657C (en) | 2005-11-25 | 2005-11-25 | Digital control method for spiral pressure machine transmission and digital control spiral pressure machine |
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| CN100448657C true CN100448657C (en) | 2009-01-07 |
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| CN102294423B (en) * | 2011-08-23 | 2013-08-07 | 山东理工大学 | Cold-forging-warm-forging numerically-controlled forming method for forged and pressed component |
| CN102323021A (en) * | 2011-08-23 | 2012-01-18 | 山东理工大学 | Method for measuring comprehensive rigidity of screw press and mold |
| CN103862704A (en) * | 2012-12-11 | 2014-06-18 | 虞文娟 | Intelligently controlled squeezing device |
| CN103134670B (en) * | 2013-01-29 | 2015-04-22 | 中国核动力研究设计院 | Selection method for reactor kingbolt to screw in rotation speed value |
| CN105729851B (en) * | 2016-02-24 | 2017-12-05 | 上海工程技术大学 | A kind of electric screw press intelligent observing and controlling system |
| CN107175307B (en) * | 2016-03-10 | 2020-09-08 | 上海工程技术大学 | Real-time displacement measuring and controlling device of screw press |
| CN111421871B (en) * | 2020-05-21 | 2024-06-07 | 南通锻压设备如皋有限公司 | Closed electrohydraulic control system of hydraulic motor driving press |
| CN112109354A (en) * | 2020-06-22 | 2020-12-22 | 山东圣德智能装备有限公司 | Servo high-energy screw press and working method thereof |
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| CN1970285A (en) | 2007-05-30 |
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