CN2701579Y - High speed precise numerical-control grinding and processing device based on PMAC - Google Patents
High speed precise numerical-control grinding and processing device based on PMAC Download PDFInfo
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- CN2701579Y CN2701579Y CN 200420070697 CN200420070697U CN2701579Y CN 2701579 Y CN2701579 Y CN 2701579Y CN 200420070697 CN200420070697 CN 200420070697 CN 200420070697 U CN200420070697 U CN 200420070697U CN 2701579 Y CN2701579 Y CN 2701579Y
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Abstract
A high speed precise numerical control grinding and processing device based on PMAC of the utility model belongs to the technique of high speed high precision grinding and processing. The utility model uses a CA6140 bed piece as a basal body. A cross feed unit on which a bracket is arranged is arranged on the bed piece. The bracket is provided with an electro-spindle and one end of the electro-spindle is provided with a grinding wheel. The grinding wheel contacts the workpiece fastened on the spindle. The other end of the workpiece contacts the spherical centre of the chuck arranged on the machine body through a fork spreader arranged on the spindle. The CA6140 bed piece is also provided with a PMAC movement controller which is inserted in the PCI slot of the microcomputer and controls the interface card as a numerical control system. The controller is connected with an asynchronous motor which is used for controlling the speed of the spindle through a converter 1. The controller is connected with the electro-spindle which is used for controlling the speed of the grinding wheel through a converter 2. The controller is also respectively connected with a linear motor and a servo motor which control the cross feed unit and laterally and longitudinally move. The controller can get the real-time speed of the workpiece and feed back the real-time speed to the PMAC controller through a code device at the back terminal of the shaft.
Description
Technical field
The utility model relates to the close numerical control grinding processing unit (plant) of a kind of high speed and super precision, particularly relate to the close numerical control grinding processing unit (plant) of a kind of high speed and super precision based on the PMAC multi-axis motion controller, not only can carry out the inside and outside circle accurate grinding of the circular section of workpiece, particularly can realize the close grinding of high speed and super precision of the surfaces externally and internally of on-circular cross-section workpiece.Belong to the close Grinding Technology of high speed and super precision, be suitable for all kinds of processing enterprises and related scientific research production of units and carry out the scientific research use.
Background technology
At present, at a high speed, superhigh speed grinding is very fast in some industrially developed country's development such as Europe, the U.S. and Japan, as Aachen university, the Bremm university of Germany, the Connection university of the U.S. etc., what have has finished V in the laboratory
sExperiment for 250m/s, 350m/s, 400m/s.It is reported, Germany Aachen university is carrying out the grinding experiment research that target is 500m/s, and aspect practical grinding, the G250 type CBN high speed external cylindrical grinder of the Japanese worker of Toyota machine adopts ￠ 400mm electroplating CBN emery wheel, linear velocity can reach 200m/s, applicable to the grinding of various workpieces.
Quite ripe to the grinding processing method of circular surface workpiece both at home and abroad, can on corresponding cylindrical grinder, be easy to realize according to requirement on machining accuracy.And the accurate grinding of complicated shape workpiece is difficult to realize, the processing of on-circular cross-section workpiece in the past mainly adopts mechanical movement synthetic method and hard mould form copying to realize.The initial stage eighties begins to develop the digital control processing lathe of on-circular cross-section workpiece abroad, is called no cam cutting lathe again.The AE group of Britain invests 5,000,000 pounds in the piston automatic machining line, and wherein the equipment of most critical is exactly the numerically controlled lathe of the non-circular piston of processing.This lathe diamond bit once-forming on-circular cross-section, its speed of mainshaft reaches 2500r/min, and productivity ratio can reach 80000/week.The non-round numerically controlled lathe of BL-CAM that the big river bend ironworker of Amada Co., Ltd. is developed, when processing non-circular piston, the speed of mainshaft is up to 3000r/min.Compare with traditional cam, hydraulic pressure processing method such as follow an example, working (machining) efficiency improves more than three times.When the processing ovality was the workpiece of 0.3mm, the speed of mainshaft was 3000r/min, and machining accuracy can reach ± 2.5um.High speed reciprocating feed motion when the TPS-3000CNC lathe developed of the Long damp ironworker of Japan has adopted special electromagnetic to drive servo control mechanism to finish non-sired results part turning is to obtain micron-sized Feed Motion Control precision and higher response speed.This lathe can be processed the oval workpiece that line of apsides difference is 25mm.The Ingersoll company of the U.S. does not have in the pattern numerically controlled lathe at development on-circular cross-section workpiece, has adopted Solid Modelling, makes the design of on-circular cross-section workpiece, manufacturing realize integrated.And adopted online measuring technique stably to guarantee the quality of product, enhance productivity.The non-sired results part of the PTM-2000 type processing numerically controlled lathe that U.S. CROSS company develops in succession, when making processing become oval piston, productivity ratio can reach 150/h, and mismachining tolerance is less than ± 3.8um.
In China, the numerical control turning processing for the on-circular cross-section workpiece of simple shape has had than mature technique and corresponding apparatus.The Changsha National University of Defense technology has developed soft profile modeling piston processing unit (plant) with the TP801 single board computer at the beginning of nineteen ninety.Utilize the experimental result of this device machining piston on the CA6250 engine lathe to show: when diameter of work is φ 110mm, the lathe rotating speed is 700r/min, when the vertical amount of feeding is 0.2mm/r, the head of piston and skirt section, can be in clamping, process with different programs, ellipticity error is ± 10um.But in first being processed, the user must be solidificated among the EPPOM in advance with the control program that weaves.These external 1998, this university began realizing that based on the direct driving micro-displacement mechanism of PC the non-round accessory grinding technique studies, and delivering of relevant paper arranged.Tsing-Hua University succeeded in developing TH-50 type and TH-200 type high frequency response, large stroke micro-feed mechanism in 1993, and based on CM6140, had developed on-circular cross-section accurate digital control turning system.When utilizing this turning system turning FL912 piston, be under the condition of 1400r/min in the speed of mainshaft, maximum mismachining tolerance is ± 0.006mm.
The research and development of processing for non-circular surfaces both at home and abroad are based on turning processing mostly, and grinding is as one of precision machined important method of machinery, should aspect the processing of non-circular surfaces, strengthen the research dynamics, research and develop out Numeric Control Technology and processing technology as early as possible about the close grinding of high speed and super precision of non-circular surfaces.
The utility model content
The purpose of this utility model is to overcome the deficiency that prior art exists, select high performance open architecture controller and PC existing machine tool to be carried out the transformation of numerical controlization, reach refining of lathe, make it become high-performance, multi-shaft interlocked novel numerical control cylindrical grinder, can realize that not only cross section is the high speed and precision grinding of circular pieces, and can be implemented in the high speed and precision grinding of the on-circular cross-section part that can't realize on traditional grinding machine, for the high speed and precision processing that solves the complex section part provides a kind of new processing unit (plant).
Design philosophy of the present utility model is: utilize a CA6140 lathe bed, with the PMAC motion controller as digital control system control interface card, and PMAC inserted in the microcomputer PCI slot, utilize the keyboard, display, output equipment of microcomputer input, demonstration, output equipment as this digital control system.Realize control simultaneously to main axle unit, feed unit and other device.At the curve that can see system responses under the control of PMAC-PC motion controller on the microcomputer monitor.
The design technology project that the utility model provides is: this high-speed precision digital control abrasive machining device based on PMAC, do matrix with a CA6140 lathe bed, cross slid platform is arranged on the lathe bed, cross slid platform is provided with support, support is provided with electric main shaft, one end of electricity main shaft is provided with emery wheel, emery wheel contacts with workpiece on being stuck in main shaft, the shift fork of the other end of workpiece by being located at main shaft be located at fuselage on spherical top the contacting of chuck, it is characterized in that on the CA6140 lathe bed, also being provided with a PMAC motion controller that inserts in the microcomputer PCI slot as digital control system control interface card, this controller is that the asynchronous motor of the rotating speed of workpiece links to each other by frequency converter 1 and control main shaft, link to each other by the electric main shaft of frequency converter 2 with the rotating speed of control emery wheel, it also respectively with the control cross slid platform laterally, the linear electric motors of lengthwise movement link to each other with servomotor, and it also obtains the real-time speed of workpiece and feed back to the PMAC controller by the encoder of shaft rear end.
Motion of the present utility model comprises rotatablely moving of main shaft, thus be installed in that shift fork on the main shaft stirs that workpiece that the workpiece on the main shaft realizes rotatablely moves and cross slid platform laterally, the length feed motion.Rotatablely moving by the J5 mouth control frequency converter 1 of PMAC of main shaft is again by the frequency control of frequency converter 1 control asynchronous motor realization to the speed of mainshaft.In like manner, the J5 mouth of PMAC control frequency converter 2, the electric main shaft of frequency converter 2 controls, the emery wheel that then is installed on the electric main shaft can be realized frequency control.Horizontal linear motor and servo longitudinal motor are by the J11 mouth control of PMAC, and the grating feedback signal of linear electric motors inserts its amplifier, and its feedback signal of equal value inserts in the feedback channel of J11; The encoder feedback signal of servomotor also inserts in the feedback channel, PMAC sends control command and motor is moved two motors like this, the theoretical displacement of motor and they are compared by the actual displacement that feedback element feeds back, utilize the digital PID control principle, the difference of theoretical displacement and actual displacement is diminished gradually, finally satisfy the requirement on machining accuracy of workpiece.Workpiece is by the top support of high-precise ball, and it rotatablely moves by stirring from the axle upper shift fork.From the axle afterbody rotary encoder of 1024 line/commentaries on classics is installed, when this signal provides for the outer round surface grinding base source PMAC make linear electric motors with this moment Ji Yuan coordinate mutually, can finish and justify and the grinding of non-circular surfaces.
The utility model adopts the PMAC motion controller as its digital control system computer.It is one 2 axial interface card, not only can independent operating, and the IC groove that also can insert in the computer slot moves in the mode of bus communication.Its output is by DSP-GATE gate array control, can and line output, so can realize 2 interlocks simultaneously.It is made up of various slots, and wherein, J1 is the display slot, can connect connection and realize that liquid crystal display or vacuum fluorescence show by its corresponding annex, uses the DISPLAY order can see the demonstration text and the variate-value of motor program or PLC program on display; J3 is that handwheel inserts slot, can insert impulse generator; J4 is that RS-232/RS-422 inserts slot, can carry out serial communication with computer; J5 is that photoelectricity is isolated I/O access slot, provide eight to have the numeral input of general applications and the numeral output that eight have general applications, these input and output use definition M variable to be read by software usually, variable M1 is respectively applied for to M8 and reads output 1 to 8, and variable M11 is respectively applied for to M18 and reads input 1 to 8; J7 is 16 A/D input interface slots; J11 is the 2 line slots that are coupling, can connect the input of 4 encoders and 2 motors comprise motor positive and negative spacing, return zero flag, the amplifier error flag is imported and amplifier enables/direction signal, comparison-signals such as equal signal output, and provide high-precision simulation to export and control servo amplifier, each analog output channel all provides the complementary DAC, the DAC/ that are obtained by 16 figure place weighted-voltage D/A converters to export, each DAC output area is-10V～+ 10V, resolution ratio can reach 300 μ V/ positions.
Adopt the micro-feeding device of linear electric motors in the utility model as emery wheel.Its characteristics mainly contain: the most important advantage of (1) linear motor is to have the acceleration, deceleration degree more much bigger than traditional turning motor.Because the straight-line feed stroke of Digit Control Machine Tool is shorter, generally be no more than the hundreds of millimeter, under very high feed speed, only reach the fast state of setting and instantaneous accurate stop motion under high speed in moment, the high-speed straight-line servomotor just has the meaning of practical application.For realizing the Precision Machining of curve or curved surface, the acceleration, deceleration degree of also having relatively high expectations in the corner of movement locus can reach (1 ~ 10) g (g=9.8m/s2), is 10～30 times of traditional turning motor feeding mode.Because the acceleration, deceleration degree is big, the efficient height is so actual available maximum speed can reach 150m/min.The shortening of (2) acceleration, deceleration process can improve machined surface quality, improves cutter life.(3) raising of transmission stiffness has improved transmission accuracy and positioning accuracy, does not have the wear problem of intermediate link, safeguards simply, has improved reliability.(4) haul distance of feeding is unrestricted.Turning motor is when realizing long stroke transmission, and the increase of ball-screw length can make inertia increase, and rigidity descends significantly, servo quality deterioration.(5) motion is quiet, noise is low.
The running of linear electric motors feed mechanism adopts closed loop feedback control working method, detect the actual displacement of grinding knife tool with the grating chi, and the encoder equivalent output port of the information that will detect by linear electric motors feeds back to the PMAC controller, by the PID adjuster of controller according to the difference self-regulation motor of displacement of targets and actual displacement the control parameter, required feeding is finished in the operation of control grinding knife tool fast.
Adopt stepper motor to realize length feed in the utility model.Stepping motor can not work independently, and it must use together with its special equipment-stepper motor driver.The basic function of stepping motor driver is: switch on and off the Exciting Windings for Transverse Differential Protection of stepping motor in a certain order with frequency, make motor start-up as requested, stop; Enough electrical power are provided; Improve the rapidity and the stationarity of stepping motor operation.When stepper motor normally moved under out-of-step free situation, its corner strictly was directly proportional with the number of control impuls, and rotating speed is directly proportional with the frequency of control impuls.Because the inertia of stepper motor and load, the startup and the stop motion of corner trace command pulse correctly, command pulse makes stepper motor may lose step or step-out even can't move.Therefore, must realize the automatic lifting speed function of dynamo-electric motivation of step.In order to realize the variation of speed, raising frequency, frequency stabilization and frequency reducing are wanted in the dfisplacement pulse instruction of input accordingly.These can add dedicated logic circuit by clock and produce, and also can be produced by microcomputer.Add the controller that logic circuit constitutes for the pulse power, control logic is fixed, and promptly control circuit is once fixing, and its control logic is also just fixing.If change logic and control scheme, must change circuit structure and component parameters.And the control that uses a computer needn't be changed hardware circuit, as long as update routine just can change the control scheme.Utilize computer-controlled form a lot, used herein is that PMAC is to Stepping Motor Control.
In the utility model, drive unit horizontal, longitudinal feed mechanism all adopts closed loop feedback control.PMAC provides position ring feedback and two kinds of forms of loop feedback of motor, and we can select according to the needs of oneself.In the I of PMAC variable, Ix02 is used for depositing the register address of the given output valve of x motor.The Ix03 variable is under the ring mode of position, and PMAC obtains the register address of x motor actual position information, by the default setting of coder transitions table, the default value of Ix03 be exactly from the processing of encoder the register address of data.The Ix04 variable is under the speed ring pattern, and PMAC obtains the register address of x motor actual position information, the default value of Ix04 be exactly from the processing of encoder the register address of data.Motor adopts single feedback in most systems, promptly adopts a kind of in speed ring or the position ring, and this time, Ix03 equaled the Ix04 value, promptly adopted same register address to place actual position information.In the I of PMAC variable, Ix02 is used for depositing the register address of the given output valve of x motor.The Ix03 variable is under the ring mode of position, and PMAC obtains the register address of x motor actual position information, by the default setting of coder transitions table, the default value of Ix03 be exactly from the processing of encoder the register address of data.The Ix04 variable is under the speed ring pattern, and PMAC obtains the register address of x motor actual position information, the default value of Ix04 be exactly from the processing of encoder the register address of data.Motor adopts single feedback in most systems, promptly adopts a kind of in speed ring or the position ring, and this time, Ix03 equaled the Ix04 value, promptly adopted same register address to place actual position information.In native system, the traverse feed unit has adopted two closed loop feedback controls of position ring and speed ring, and the length feed unit has adopted the position ring FEEDBACK CONTROL.Consider from precision and stable aspect, provide more accurate position measurement than the sensor on motor, because its precision is not subjected to defect influence in the motor load connection at the sensor in the load.But the instability that the sensor in the load can make axle become all has been in feedback loop inside now because these connect defective such as gap etc.And the sensor on motor may make the precision reduction that better stability is provided, because it all has been placed on the feedback loop outside to these defectives.In native system, traverse feed driver element linear electric motors adopt grating chi detecting element, and what promptly adopt is belt sensor on the motor, has improved the stability of system.
In the utility model, in order to control the horizontal and vertical table feed of workbench in the grinding, the J11 mouth of PMAC and the amplifier of motor need be linked, only introduce the situation that the linear electric motors of J11 mouth and transverse feed mechanism link here.By being connected of J11 mouth and linear electric motors, realized the in-movement of workbench.In the grinding of non-circle, the traverse feed linear electric motors not only provide frequent straight line trace reciprocating feed motion, and the positioning accuracy of 1 μ m is provided, and these excellent characteristic provide necessary assurance for the realization of machine parts'precise grinding.
In the utility model, improving grinding speed mainly is the rotating speed, the particularly occasion that is restricted at grinding wheel diameter that improves grinding wheel spindle.Thereby the main axle unit that is adapted to high accuracy, high speed and ultrahigh speed grinding machine is the critical component of grinding machine.Main axle unit comprises main shaft power source, main shaft, bearing and frame several sections, and it affects precision, stability and the range of application of system of processing, and its dynamic performance and stability play a part crucial to high-speed and high-efficiency grinding, accurate ultra grinding.And for high-speed, high precision main axle unit system, should be good rigidly, the rotating accuracy height, during running temperature rise little, good stability, reliable, low in energy consumption, the life-span is long, simultaneously, cost also should be moderate.Satisfy these requirements, the manufacturing of main shaft and dynamic balancing, the support of main shaft (bearing), the lubricated and cooling of axis system, the rigidity of system etc. also is very important.The electricity main shaft has compact conformation, in light weight, advantage such as inertia is little, vibration is little, noise is low, response is fast, makes the electricity consumption main shaft can reduce gear drive, and the simplification Machine Tool design is easy to realize that main shaft locatees, and is a kind of ideal structure in the high-speed main spindle unit.With the electric main shaft of hybrid ceramic ball bearing supporting, generally use grease, fog lubrication.In fog lubrication, air mixes with oil, and compressed air is confession often, and oil is taked regularly, the mode of necessary minimum is supplied with, and this lubricating system can reach and accurately lubricate, but equipment needed thereby complexity, cost are very high.The cooling means commonly used of electricity main shaft is to utilize cold water to circulate the temperature rise that reduces axis system.High-speed electric main shaft at short notice by static rise to the tens thousand of commentaries on classics of per minute be quite the difficulty.The electricity main shaft must apply a certain amount of preload for guaranteeing operate as normal, and this has increased the moment of resistance of electric main shaft again.For making electric main shaft can successfully finish start-up course, should choose bigger detent torque, so the starting current of high-speed electric main shaft will exceed 5～7 times of rated current of common electric machine.Static converter supply is to utilize ac variable speed technology, and industrial-frequency alternating current is converted to required frequency alternating current.The frequency converter operation principle is based upon on the magnetic vector Elementary Theory of Control, adopts the high power transistor static converter supply at present.It can convert three-phase 50Hz380V AC power to the three-phase intermediate frequency power supply, and its output voltage, frequency are adjustable continuously.Up-to-date frequency converter adopts advanced transistor technology (as the SAMIGS Series Frequency Converter of Switzerland ABB AB production), can realize the infinitely variable speeds of asynchronous motor.
In the utility model, what select for use is grating chi and the photoimpact encoder detecting element as system.In this numerical control system, vertically reach horizontal tool setting and all finish with the grating chi.Wherein the used grating chi of traverse feed tool setting is in linear electric motors inside, the DAC interface that feeds back to the PMAC controller of the actual displacement equivalent that it moves motor, controller compares according to the value of actual feedback and bid value and compensates a difference then and make physical location overlap with the unlimited of command position then.
The selected encoder of digital control system of the present utility model is 1024 lines, and revolution sends 1024 pulses, becomes 4096 pulses weekly after encoder passage 4 frequencys multiplication of PMAC are amplified.When non-circular surfaces grinding, the pulsed quantity that sends with this encoder makes the motion of traverse feed unit and the rotation of main shaft keep synchronously as the time Ji Yuan of master site.The base function has guaranteed that following main shaft at encoder rotated in the time in a week, allowed transverse feed mechanism just in time finish once the grinding and feeding of complete non-circular surfaces during PMAC.
Compared with prior art, the beneficial effects of the utility model are: utilization PMAC multi-axis motion controller, with integrated, open thought, transverse and longitudinal feed unit, grinding wheel spindle unit, position detection unit and other annex of lathe organically are tied, make this grinding machine become an open platform truly, the control of each component units of system all is under the core controller PMAC.In this numerically control grinder, introduced linear motor driven, linear electric motors directly drive the feed motion of electric main shaft emery wheel, have realized " zero transmission " of lathe horizontal work level.The reciprocating feed motion of linear electric motors makes the Precision Machining of the non-circular surfaces of workpiece become possibility; Adopt frequency converter that high-speed electric main shaft is carried out the requirement that speed is regulated emery wheel different rotating speeds when satisfying grinding.The stable state of this grinding machine servo performance and dynamic characteristic adopt the method for the PID+ FEEDFORWARD CONTROL of PMAC to regulate, and utilize the software of PMAC to adopt rational control method can make systematic function reach requirement.
Description of drawings
The equipment connection diagram of the embodiment that Fig. 1 provides for the utility model;
Fig. 2 is the two FEEDBACK CONTROL block diagrams of motor;
Fig. 3 is the wiring diagram of PMAC and linear electric motors and main encoder;
Fig. 4 is PMAC and main encoder wiring diagram.
The specific embodiment
The embodiment that provides below in conjunction with accompanying drawing is described further the concrete technical scheme of the present utility model and the course of work:
In Fig. 1, do matrix with a CA6140 lathe bed, cross slid platform is arranged on the lathe bed, cross slid platform is provided with support, support is provided with electric main shaft, one end of electricity main shaft is provided with emery wheel, emery wheel contacts with workpiece on being stuck in main shaft, the shift fork of the other end of workpiece by being located at main shaft be located at fuselage on spherical top the contacting of chuck, on the CA6140 lathe bed, also be provided with a PMAC motion controller that inserts in the microcomputer PCI slot as digital control system control interface card, this controller is controlled the rotating speed that main shaft is a workpiece by frequency converter 1 control asynchronous motor, control the rotating speed of emery wheel by the electric main shaft of frequency converter 2 controls, it also controls the horizontal of cross slid platform by control linear electric motors and servomotor respectively, motion longitudinally, it also the real-time speed that obtains workpiece of the encoder by rear-end of spindle feed back to the PMAC controller
In Fig. 2, Ix02 is used for depositing the register address of the given output valve of x motor.The Ix03 variable is under the ring mode of position, and PMAC obtains the register address of x motor actual position information, by the default setting of coder transitions table, the default value of Ix03 be exactly from the processing of encoder the register address of data.The Ix04 variable is under the speed ring pattern, and PMAC obtains the register address of x motor actual position information, the default value of Ix04 be exactly from the processing of encoder the register address of data.Promptly adopt in speed ring or the position ring in single feedback, Ix03 equals the Ix04 value, promptly adopts same register address to place actual position information.In native system, the traverse feed unit has adopted two closed loop feedback controls of position ring and speed ring, and the length feed unit has adopted the position ring FEEDBACK CONTROL; Traverse feed driver element linear electric motors adopt grating chi detecting element, and what promptly adopt is belt sensor on motor, so that improve the stability of system.
As shown in Figure 3, the utility model is by the PMAC motion controller linear electric motors of transverse feed mechanism to be integrated in the abrasive machining device as the control object, C3 is the control terminal of linear motor driver among the figure, and this terminal is accepted the motion of the single-ended aanalogvoltage control linear electric motors that the PMAC controller sends; C4 is the feedback terminal of linear electric motors grating chi, this terminal is accepted the position signalling of linear electric motors, feedback as the speed ring and the position ring of PMAC controller, as seen from Figure 3: C3 is user's input/output interface of linear motor driver, it has 13 pin functions, and it is positive and negative that its middle port 2,3 is respectively the analog differential input; Pin 7 is the input of 24V power supply; Pin 8 is the remote actuator Enable Pin.C4 is an encoder equivalent output interface on the linear motor driver, and wherein pin 1,2 is respectively the mutually positive and negative output of A; Pin 3 is a public port; Pin 4,5 is respectively the mutually positive and negative output of B; Pin 7,8 is respectively the positive and negative output of C phase index channel.The J11 mouth is the JMACH port of PMAC controller, the I/O that it provides 4 passages promptly: simulation output; The incremental encoder input; Relevant input and output signal acquisition; The connection of power supply.It has 60 pins, wherein pin 17,19,21,23,25,27 be respectively with linear motor driver on the positive and negative input of the corresponding C of encoder equivalent output interface, B, A three-phase; Pin 43 for the physical location of control motor in the PMAC controller to motor make feedback the DAC output interface, it with linear motor driver on equivalent encoder output interface in analog differential import and to be connected; Pin 58 is simulation ground.Pin 59,60 is ± 15V analog power binding post.
As shown in Figure 4, on line figure for PMAC controller and photoimpact encoder, it is being connected of main encoder and J11 mouth among Fig. 4, pin 18,22,26 are respectively and the corresponding C of main encoder interface of Ji Yuan when providing, B, the single-ended input of A three-phase, the utility model is by the PMAC motion controller working shaft unit to be integrated in the abrasive machining device as the control object, the main encoder terminal is the position feedback of working shaft among the figure, and this terminal is accepted pulse signal that working shaft photoimpact encoder sends is finished the oval part of processing as the time base control signal control linear electric motors of linear electric motors track.
Claims (5)
1. high-speed precision digital control abrasive machining device based on PMAC, do matrix with a CA6140 lathe bed, cross slid platform is arranged on the lathe bed, cross slid platform is provided with support, support is provided with electric main shaft, one end of electricity main shaft is provided with emery wheel, emery wheel contacts with workpiece on being stuck in main shaft, the shift fork of the other end of workpiece by being located at main shaft be located at fuselage on spherical top the contacting of chuck, it is characterized in that on the CA6140 lathe bed, also being provided with a PMAC motion controller that inserts in the microcomputer PCI slot as digital control system control interface card, this controller is that the asynchronous motor of the rotating speed of workpiece links to each other by frequency converter 1 and control main shaft, link to each other by the electric main shaft of frequency converter 2 with the rotating speed of control emery wheel, it also respectively with the control cross slid platform laterally, the linear electric motors of lengthwise movement link to each other with servomotor, and it also obtains the real-time speed of workpiece and feed back to the PMAC controller by the encoder of rear-end of spindle.
2. a kind of high-speed precision digital control abrasive machining device according to claim 1 based on PMAC, the J1 that it is characterized in that the PMAC motion controller is the display slot, J3 is that handwheel inserts slot, J4 is that RS-232/RS-422 inserts slot, J5 is that photoelectricity is isolated I/O access slot, and J7 is 16 A/D input interface slots; J11 is the 2 line slots that are coupling, wherein the J5 mouth of PMAC is controlled frequency converter 1, again by frequency converter 1 control asynchronous motor, the J5 mouth of PMAC is also controlled frequency converter 2, the electric main shaft of frequency converter 2 controls, J11 mouth control horizontal linear motor and the servo longitudinal motor of PMAC, the grating feedback signal of linear electric motors inserts its amplifier, its feedback signal of equal value inserts in the feedback channel of J11, and the encoder feedback signal of servomotor also inserts in the feedback channel.
3. a kind of high-speed precision digital control abrasive machining device based on PMAC according to claim 1 and 2 is characterized in that being equipped with from the axle afterbody rotary encoder of 1024 line/commentaries on classics.
4. a kind of high-speed precision digital control abrasive machining device according to claim 1 and 2 based on PMAC, it is characterized in that the detecting element as system is grating chi and photoimpact encoder, wherein the used grating chi of traverse feed tool setting is located at linear electric motors inside.
5. a kind of high-speed precision digital control abrasive machining device based on PMAC according to claim 3 is characterized in that the detecting element as system is grating chi and photoimpact encoder, and wherein the used grating chi of traverse feed tool setting is located at linear electric motors inside.
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| CN100402233C (en) * | 2004-09-20 | 2008-07-16 | 沈阳建筑大学 | High speed precision digital control grinding processing device based on PMAC |
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| CN103213022A (en) * | 2013-03-22 | 2013-07-24 | 山东鲁南机床有限公司 | Safety protection device of hydraulic chuck |
| CN105014539A (en) * | 2015-07-16 | 2015-11-04 | 湖南大学 | Controllable quick back-forth point feeding grinding system based on grinding temperature empirical model and grinding method |
| CN105843283A (en) * | 2016-05-16 | 2016-08-10 | 湖南大学 | Camshaft grinding processing thermostatic control device and method |
| CN107553230A (en) * | 2016-06-30 | 2018-01-09 | 株式会社捷太格特 | Method for grinding and grinding machine |
| CN107627181A (en) * | 2017-09-18 | 2018-01-26 | 青岛恒润祥机械制造有限公司 | A kind of Full-automatic woodworking Double-faced desk type sander |
| CN110235068A (en) * | 2017-05-18 | 2019-09-13 | 深圳市海浦蒙特科技有限公司 | The position control method and system of machine tool chief axis |
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2004
- 2004-09-20 CN CN 200420070697 patent/CN2701579Y/en not_active Expired - Fee Related
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100402233C (en) * | 2004-09-20 | 2008-07-16 | 沈阳建筑大学 | High speed precision digital control grinding processing device based on PMAC |
| CN101541473B (en) * | 2007-02-28 | 2011-03-16 | 埃尔温容克尔机械制造有限公司 | Method for grinding a machine part, and grinding machine for carrying out said method |
| CN102562832A (en) * | 2010-12-20 | 2012-07-11 | 中国石油大学(北京) | Force coupled transmission device and stable drive shaft rotating system |
| CN102562832B (en) * | 2010-12-20 | 2014-05-28 | 中国石油大学(北京) | Force coupled transmission device and stable drive shaft rotating system |
| CN102145473A (en) * | 2011-01-19 | 2011-08-10 | 福建长江工业有限公司 | Method and equipment for controlling constant polishing force of buffing machine |
| CN103213022A (en) * | 2013-03-22 | 2013-07-24 | 山东鲁南机床有限公司 | Safety protection device of hydraulic chuck |
| CN105014539A (en) * | 2015-07-16 | 2015-11-04 | 湖南大学 | Controllable quick back-forth point feeding grinding system based on grinding temperature empirical model and grinding method |
| CN105843283A (en) * | 2016-05-16 | 2016-08-10 | 湖南大学 | Camshaft grinding processing thermostatic control device and method |
| CN107553230A (en) * | 2016-06-30 | 2018-01-09 | 株式会社捷太格特 | Method for grinding and grinding machine |
| CN110235068A (en) * | 2017-05-18 | 2019-09-13 | 深圳市海浦蒙特科技有限公司 | The position control method and system of machine tool chief axis |
| CN107627181A (en) * | 2017-09-18 | 2018-01-26 | 青岛恒润祥机械制造有限公司 | A kind of Full-automatic woodworking Double-faced desk type sander |
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