CN1067619C - Roll grinder digital control system - Google Patents
Roll grinder digital control system Download PDFInfo
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- CN1067619C CN1067619C CN94107058A CN94107058A CN1067619C CN 1067619 C CN1067619 C CN 1067619C CN 94107058 A CN94107058 A CN 94107058A CN 94107058 A CN94107058 A CN 94107058A CN 1067619 C CN1067619 C CN 1067619C
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Abstract
The present invention provides a digital control system for a roll grinder, which is composed of universal components such as a computer, a programmable controller, a servo actuator, a raster detection mechanism, a multi-path counting module, a communication module, a high-speed counting module, a digital-analog conversion module D/A, an analog-digital conversion module A/D, a digital quantity input and output module I/O, etc., a module, a system control program and a driving control program for a servo system. The present invention has the advantages of convenient development of a user application program, few input parameters, high work efficiency of a grinder, wide range of workpieces to be processed, simple structure, low manufacturing cost, easy fabrication, convenient maintenance, reliable and safe operation, easy renewal of the product, etc.
Description
The present invention relates to a kind of roll grinder digital control system and method, belong to the grinding machine fields of numeric control technique.
At present, roll grinder is widely used in the grinding of the roll shape workpiece in fields such as metallurgy, papermaking, chemical industry.Along with development of modern industry, requiring roll grinder can the high-precision surface profile of grinding be the roll shape workpiece of curve, but roll grinder of the prior art is because the technical conditions restriction of its digital control system, make it can not satisfy the needs of modern industry far away, the shortcoming of digital control system is in the prior art: 1, owing to being that roll shape workpiece for processing certain several surface outline curves designs, it is very difficult and very difficult therefore wanting to expand on its basis its function again; 2, the digital control system of prior art mostly adopts specialized. circuit modules, so cost height, fluctuation of service, easy-maintaining and be difficult for carrying out product and upgrade not; 3, the radial motion of prior art breaker roll grinder wheel drives and is single shaft list motor-driven, therefore to be what all can only drive precision by a kind of radial motion to the protruding/recessed amplitude of surface of the work contour curve control, can not determine that it drives precision according to the needs of processing work, and can only process protruding/roll shape workpiece that recessed amplitude variable quantity is not too big, because if the workpiece that is designed to process protruding greatly/recessed amplitude then processing little protruding/its precision just is difficult to control during recessed amplitude, has so just reduced the operating efficiency and the scope of application of roll grinder; 4, the wheel grinding linear velocity of prior art can not be carried out automatic constant, therefore is difficult to satisfy the technological requirement of linear velocity constant.
Input parameter is few when the object of the present invention is to provide a kind of machining programming, and the radial motion big, emery wheel of the protruding/recessed amplitude variable quantity of energy processing work surface outline curves drives the precision height, can carry out error compensation processing and can carry out the constant control of grinding speed automatically according to testing result, and adopt the roll grinder digital control system and the method for universal circuit module according to technological requirement.
The present invention is achieved in that roll grinder digital control system comprises computer, Programmable Logic Controller, the saddle servomotor is a Z axle servomotor, V axle servomotor, U axle servomotor, grinding wheel spindle axle servomotor, work spindle axle servomotor, detect servomotor, signal feedback circuit, sensor, manual control panel, hand dish, multiple metering module and system control program are housed in computer, communication module is housed in Programmable Logic Controller, high speed counting module, D/A converter module D/A, analog-to-digital conversion module A/D and digital quantity input/output module I/O and servo-drive system drive control program, the communication module serial communication interface of Programmable Logic Controller connects the serial communication interface of computer, Z axle servomotor, V axle servomotor, U axle servomotor, grinding wheel spindle axle servomotor, work spindle axle servomotor meets a module D/A respectively, the feedback signal of each servomotor feeds back to high speed counting module by feedback circuit, the feedback signal of Z axle servomotor also feeds back to the multiple metering module of computer, manual control panel and sensor meet a modules A/D respectively, hand dish output signal to a high speed counting module, module I/O connects the detection servomotor, detect driven by servomotor A, B, three grating chis of C are measured workpiece, A, B, C grating chi arrives the multiple metering module with the testing result signal feedback, system control program control computer and Programmable Logic Controller carry out the real-time exchange of data and control signal, and carry out the machining prgraming of workpiece that surface profile is curve or straight line and the processing of feedback signal, the servo-drive system of Programmable Logic Controller drives control program and controls each servomotor work, and the radial feed that the radial motion of emery wheel drives emery wheel by U axle servomotor transmission micromotion mechanism or by V axle servomotor transmission grinding carriage planker respectively when the mill curve is by V axle servomotor or add a driven by servomotor separately again; Whether the control method of this system is: at first check with the communication module passage of Programmable Logic Controller unimpeded after system control program starts, programme, begin then grinding, measure circulation by keyboard afterwards, be programmed for the editing objective value or the process parameter value of the surface outline curves of input processing work; Servo-drive system drives and enters the numerical control grinding selection mode after control program starts, as not selecting the numerical control grinding state then to enter manual state of a control, as select numerical control grinding then judge the surface of the work contour curve protruding/recessed amplitude, belong to Small Amplitude and then start U axis Position Control program, belong to big amplitude and then start V axis Position Control program, no curve is protruding/and recessed amplitude then closes U, V axle control program, enters the numerical control grinding that circulates automatically afterwards, and circulation finishes and gets back to the numerical control grinding selection mode; Behind the Position Control program start of U axle, in a sampling period, the actual position value that the CPU of Programmable Logic Controller at first reads saddle in the high speed counting module is a Z axle actual position value, read the U axial coordinate value of its corresponding minute nearest lattice point then by Z axle actual position value, if the physical location of Z axle is between two fens lattice points, then the desired value of U axle is that coordinate figure according to this two fens lattice points calculates by approach based on linear interpolation, after reading or calculate the desired value of U shaft position, read the position actual value of U axle, ask the position deviation of desired value and actual value, the outgoing position motion value, return the positional value of reading saddle afterwards again and carry out above-mentioned circulation again, sensor becomes the variation of grinding wheel diameter into modules A/D that the signal of telecommunication is input to Programmable Logic Controller, the variable quantity that the CPU of Programmable Logic Controller takes out given grinding speed and the grinding wheel diameter of sensor input in the memory relatively after, the rotating speed and the output signal that calculate the grinding wheel spindle servomotor arrive servomotor.
Compared with the prior art, the present invention is owing to adopted computer and Programmable Logic Controller, therefore can make full use of existing computer operating system software development of resources application program, the present invention drives under the control of control program at the servo system of system control program and servo-drive system driving control program, respectively the calculating of surface of the work contour curve coordinate figure is calculated in two steps, the first step is calculated branch lattice point and the corresponding U axle or the V axial coordinate of Z axle by computer, second goes on foot by Programmable Logic Controller according near the corresponding lattice point coordinates Z axle physical location, again further the wiring interpolation calculation go out corresponding two minutes between the lattice point the U axle or the coordinate figure of V axle, owing to adopted this Calculation Method in two steps, saved memory capacity, improved arithmetic speed, and input parameter is few during machining programming; Because the radially operation of emery wheel is respectively by diaxon U axle or V axle driven by servomotor, therefore can be what according to the protruding/recessed amplitude of curve and the needs of processing work are determined the radial motion driving precision of emery wheel, so just having improved the work of roll grinder renders a service, the present invention can also require to measure automatically the automatic constant of processing and realizing grinding speed with error compensation by follow procedure, and owing to adopted the universal circuit module, therefore simple in structure, cheap, easy to maintenance, safe and reliable, product is easy to upgrade.
Go on foot the explanation embodiments of the invention below in conjunction with accompanying drawing nearly:
Accompanying drawing 1 is a structural representation of the present invention;
Accompanying drawing 2 is that the present invention is installed in the schematic diagram on the roll grinder;
Accompanying drawing 3 is system control program flow charts;
Accompanying drawing 4 is system control program program flow charts;
Accompanying drawing 5 is sine curve programming subroutine flow charts of program;
Accompanying drawing 6 is arbitrary curve programming subroutine flow charts of program;
Accompanying drawing 7 is tapering curve programming subroutine flow charts of program;
Accompanying drawing 8 is straight line programming subroutine flow charts of program;
Accompanying drawing 9 is worker's generation parameter programming subroutine flow charts of programming;
Accompanying drawing 10 is grinding program flow charts;
Accompanying drawing 11 is process of measurement flow charts;
Accompanying drawing 12 is that servo-drive system drives the control program flow chart;
Accompanying drawing 13 is U axis Position Control subroutine flow charts that servo-drive system drives control program;
Accompanying drawing 14 is numerical control loop control subroutine flow charts that servo-drive system drives control program.
19 is that workpiece to be machined, 20 is that long grating chi (being C grating chi), 21 is that short grating chi (being B grating chi), 22 is weak point grating chi (being A grating chi) in accompanying drawing 2.
Computer 1 adopts WS-514 Industrial Control Computer (also can adopt the computer with other models of IBM machine compatibility) in the present embodiment, the operation system of computer version of DOS6.0, Programmable Logic Controller 2 models are SG-8B, grating measuring device structure gauge head model is MT12W, signal feedback circuit 18 adopts pulse coder, multiple metering module 12 models of adorning in computer are TCG-10, at 2 li communication modules that are equipped with 13 of Programmable Logic Controller, high speed counting module 14, digital-to-analogue piece die change piece D/A15, the model of general modules such as analog-to-digital conversion module A/D16 and digital quantity input/output module I/O 17 just can by selected Programmable Logic Controller model apolegamy, the serial communication interface of communication module 13 is connect the serial communication interface of computer, Z axle servomotor 3, V axle servomotor 4, U axle servomotor 5, grinding wheel spindle axle servomotor 6, work spindle axle servomotor 7 meets a module D/A respectively, the feedback signal of each servomotor feeds back to high speed counting module 14 by feedback circuit 18, roll grinder saddle 24 servomotors are the multiple metering module 12 that the feedback signal of Z axle servomotor 3 also feeds back to computer, manual control panel 10 and sensor 9 meet a modules A/D16 respectively, sensor 9 becomes emery wheel 23 diameter variation into modules A/D16 that the signal of telecommunication is input to Programmable Logic Controller 2, the variable quantity that the CPU of Programmable Logic Controller 2 takes out the grinding wheel diameter that given grinding speed value and sensor 9 import in the memory relatively after, the rotating speed and the output signal that calculate grinding wheel spindle servomotor 6 arrive servomotor 6, to realize the constant purpose of grinding speed; The output signal of hand dish 11 is by the feeding of high speed counting module 14 control emery wheels, module I/O 17 connects and detects servomotor 8, detect servomotor 8 and drive A, B, three grating chis of C are measured workpiece, A, B, C grating chi arrives multiple metering module 12 with the testing result signal feedback, system control program 26 control computers 1 and Programmable Logic Controller 2 carry out the real-time exchange of data and control signal, and carry out the machining prgraming of workpiece that surface profile is curve or straight line and the processing of feedback signal, the servo-drive system of Programmable Logic Controller 2 drives control program 27 each servomotor of control and carries out grinding; Whether unimpeded at first check after system control program 26 starts with communication module 13 passages of Programmable Logic Controller 2, report to the police as then connecting warning device for "No", as then entering program for "Yes", enter behind the program and programme, enter then grinding, measure circulation, be recycled to so always and finish the editing objective value and just finish grinding by keyboard.The radial motion of emery wheel 23 drives by U axle servomotor 5 transmission micromotion mechanisms 28 or by V axle servomotor transmission grinding carriage planker 25 respectively when the mill curve, the radial feed of emery wheel 23 can be driven or be added a motor more in addition by V axle servomotor 4 does the radial feed driving separately, only does the feeding driving of emery wheel 23 here with a V axle servomotor 4.
Being programmed for by keyboard input processing work surface profile is sine curve, the tapering curve, the editing objective value or the technological parameter of arbitrary curve or straight line, if selected sine curve processing, then the sine curve programming at first is deposited into the sine curve data of several processing types commonly used in the memory of computer by numbering, the operator selects sine curve by numbering (1～10), determine to have or not chamfering then, select if any then carrying out straight line or circular arc chamfering, as choose the straight line chamfering then to import the chamfering length data, as choose circular arc chamfering then to import length, highly, the pattern data, if do not need chamfering or imported the data of chamfering, it is sinusoidal minimum and maximum peak value that program just enters input convexity/concave amount, length of curve, half-angle numerical value, the arithmetic unit of then each data being delivered to computer calculates the respective coordinate value that hundreds of Z axles divide lattice point and pairing U axle or V axle, and its coordinate figure is deposited in the memory of computer, if also need to process the sine curve of other numberings then key in numbering again, computer calculates and the result is deposited in the memory after finishing aforesaid operations, enters grinding program then; If selected arbitrary curve processing, then the arbitrary curve programming at first is deposited into the old curve data of several specific types in the memory of computer by numbering (1～5), the operator can select old curve modification or select new curve to set up by numbering, if select old curve modification then just enter grinding program after revising parameter by keyboard input, if selecting new curve sets up then the scale division value Δ Z of Z axle by a keyboard entry, computer calculates N corresponding coordinate figure on the Z axle by the formula of Z=N * Δ Z according to the desired value of keying in, and its coordinate figure is deposited in the memory of computer, the numerical value of N is to hundreds of from 1, here get N=500, after having calculated the 500th coordinate figure, just enter grinding program;
At first enter manual grinding and select after grinding program starts, then enter the manual grinding monitored state as the moving grinding of player, the operator can carry out various manual operations to each servo actuator by hand dish or manual control panel under this state; Then entering conventional grinding as the moving grinding of player not selects, when not selecting conventional grinding then to enter the compensation grinding, under compensation grinding state, computer compares measured curve and theoretical curve, calculate compensated curve, after having calculated compensated curve or selected conventional grinding, program just enters curve data is transferred in the memory of Programmable Logic Controller, whether the numerical control grinding entry condition of judging Programmable Logic Controller then satisfies, input has related parameter as not satisfying then, then enter the numerical control grinding startup as satisfying, program at first monitors U under the numerical control grinding state, V, current operation situation of moving of Z axle and operation numbering, the number of strokes etc., allow the operator determine whether to revise or to optimize the numbering or the parameter of current operation or all the other operations then, as then just being optimized modification by keyboard for "Yes", when optimize revising the back or do not revise then definite again number of strokes whether need to add and subtract 1, just import respective counts if desired, if do not need or the program of having imported after the respective counts numerical control of arriving suspends and selects, restarting program after suspending just gets back to and begins next circulation under the monitored state, as not suspending, the program numerical control of arriving stops to select, as not stopping, program is just got back to monitored state and is begun next circulation, as wants shut down procedure just to get back to the manual grinding state.
Process of measurement control subsidiary, roundness measurement, concentricity measurement, diameter measurement and roll shape are measured.
Servo-drive system drives and enters the numerical control grinding selection mode after control program 27 starts, as not selecting the numerical control grinding state then to enter manual state of a control, manual control panel 10 can be controlled grinding wheel spindle servomotor 6 by modules A/D16 under manual state of a control, work spindle servomotor 7, the motion of V axle servomotor 4, as select numerical control grinding then judge the surface of the work contour curve protruding/recessed amplitude large, medium and small, if amplitude≤80mm then belong to Small Amplitude, just start U axis Position Control program, if amplitude＞80mm belongs to big amplitude, just start V axis Position Control program, no curve is protruding/and recessed amplitude then closes U, V axle control program, enter the numerical control grinding that circulates automatically afterwards, circulation finishes and gets back to the numerical control grinding selection mode; Behind the Position Control program start of U axle, in a sampling period, the actual position value that the CPU of Programmable Logic Controller 2 at first reads saddle 24 in the high speed counting module 14 is a Z axle actual position value, read the U axial coordinate value of immediate corresponding two minutes lattice points then by Z axle actual position value, if the physical location of Z axle is between this two fens lattice points, then the desired value of U axle is that coordinate figure according to this two fens lattice points calculates by approach based on linear interpolation, after reading or calculate the desired value of U shaft position, read U shaft position actual value again, ask the position deviation of desired value and actual value, output U shaft position motion value, return the positional value of reading saddle afterwards again and carry out above-mentioned circulation again.V axis Position Control program is the same with U axis Position Control program, and what just read is the positional value of V axle.
Numerical control loop control subprogram is controlled each servomotor and is carried out the numerical control grinding that circulates automatically.
More than all operating process all under interactive state, carry out, computer 1 and Programmable Logic Controller 2 are finished the processing of workpiece automatically according to operator's requirement under the control of said procedure, computer comes out by the data and the curve printing of printer with theoretical curve and data and processing result after machining.
Claims (4)
1, a kind of roll grinder digital control system, it comprises computer (1), Programmable Logic Controller (2), the saddle servomotor is a Z axle servomotor (3), V axle servomotor (4), U axle servomotor (5), grinding wheel spindle axle servomotor (6), work spindle axle servomotor (7), detect servomotor (8), signal feedback circuit (18), sensor (9), manual control panel (10), hand dish (11), it is characterized in that: multiple metering module (12) and system control program (26) are housed in computer, in Programmable Logic Controller (2) lining communication module (13) is housed, high speed counting module (14), D/A converter module D/A (15), analog-to-digital conversion module A/D (16) and digital quantity input/output module I/O (17) and servo-drive system drive control program (27), the communication module serial communication interface of Programmable Logic Controller connects the serial communication interface of computer, Z axle servomotor (3), V axle servomotor (4), U axle servomotor (5), grinding wheel spindle axle servomotor (6), work spindle axle servomotor (7) meets a module D/A (15) respectively, the feedback signal of each servomotor feeds back to high speed counting module (14) by feedback circuit (18), the feedback signal of Z axle servomotor also feeds back to the multiple metering module (12) of computer, manual control panel (10) and sensor (9) meet a modules A/D (16) respectively, hand dish (11) output signal to a high speed counting module (14), module I/O (17) connects and detects servomotor (8), detect servomotor (8) and drive A, B, three grating chis of C are measured workpiece, A, B, C grating chi arrives multiple metering module (12) with the testing result signal feedback, system control program (26) control computer and Programmable Logic Controller carry out the real-time exchange of data and control signal, and carry out the machining prgraming of workpiece that surface profile is curve or straight line and the processing of feedback signal, the servo-drive system of Programmable Logic Controller drives control program (27) and controls each servomotor work.
2, roll grinder digital control system according to claim 1, it is characterized in that: the radial motion of emery wheel (23) drives by U axle servomotor (5) transmission micromotion mechanism (28) or by V axle servomotor (4) transmission grinding carriage planker (25) respectively during the mill curve, and the radial feed of emery wheel is by V axle servomotor (4) or add a driven by servomotor separately again.
3, a kind of be used for the described system of claim 1 roll rod grinding machine numerical control method, it is characterized in that: whether unimpededly after system control program (26) starts, at first check with communication module (13) passage of Programmable Logic Controller, programme, begin then grinding, measure circulation by keyboard afterwards, be programmed for the editing objective value or the process parameter value of the surface outline curves of input processing work; Servo-drive system drives and enters the numerical control grinding selection mode after control program (27) starts, as not selecting the numerical control grinding state then to enter manual state of a control, as select numerical control grinding then judge the surface of the work contour curve protruding/recessed amplitude, belong to Small Amplitude and then start U axis Position Control program, belong to big amplitude and then start V axis Position Control program, no curve is protruding/and recessed amplitude then closes U, V axle control program, enters the numerical control grinding that circulates automatically afterwards, and circulation finishes and gets back to the numerical control grinding selection mode; Behind the Position Control program start of U axle, in a sampling period, the actual position value that the CPU of Programmable Logic Controller (2) at first reads saddle (24) in the high speed counting module (14) is a Z axle actual position value, read the U axial coordinate value of its corresponding minute nearest lattice point then by Z axle actual position value, if the physical location of Z axle is between two fens lattice points, then the desired value of U axle is that coordinate figure according to this two fens lattice points calculates by approach based on linear interpolation, after reading or calculate the desired value of U shaft position, read the position actual value of U axle, ask the position deviation of desired value and actual value, the outgoing position motion value, return the positional value of reading saddle (24) afterwards again and carry out above-mentioned circulation again.
4, the rod grinding machine numerical control method that rolls according to claim 3, it is characterized in that: sensor (9) becomes emery wheel (23) diameter variation into modules A/D 16 that the signal of telecommunication is input to Programmable Logic Controller (2), the variable quantity that the CPU of Programmable Logic Controller (2) takes out given grinding speed and the grinding wheel diameter of sensor (9) input in the memory relatively after, the rotating speed and the output signal that calculate grinding wheel spindle servomotor (6) arrive servomotor (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94107058A CN1067619C (en) | 1994-06-10 | 1994-06-10 | Roll grinder digital control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94107058A CN1067619C (en) | 1994-06-10 | 1994-06-10 | Roll grinder digital control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1097670A CN1097670A (en) | 1995-01-25 |
| CN1067619C true CN1067619C (en) | 2001-06-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94107058A Expired - Fee Related CN1067619C (en) | 1994-06-10 | 1994-06-10 | Roll grinder digital control system |
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| Country | Link |
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| CN (1) | CN1067619C (en) |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1095556C (en) * | 2000-01-25 | 2002-12-04 | 清华大学 | Omnibearing integrated PC digit control system |
| CN101464679B (en) * | 2008-12-11 | 2010-12-08 | 天水星火机床有限责任公司 | Control method for common roll grinding machine |
| CN101859132A (en) * | 2010-06-03 | 2010-10-13 | 南京数控机床有限公司 | Analog main shaft control device for numerically controlled lathe and control method thereof |
| CN102343541A (en) * | 2010-08-03 | 2012-02-08 | 上海电气集团股份有限公司 | Numerical control system for camshaft grinding machine and control method thereof |
| CN103009200B (en) * | 2012-12-25 | 2014-12-10 | 武汉宝德机电股份有限公司 | Two-wheeled numerical control roll grinder and numerical control method thereof |
| CN105500180B (en) * | 2015-11-24 | 2017-11-28 | 西安航天源动力工程有限公司 | The force-location mix control method of negative electrode roller mill |
| CN108907986A (en) * | 2018-07-19 | 2018-11-30 | 项大清 | Grind diamond segment device |
| CN116661375A (en) * | 2023-08-02 | 2023-08-29 | 济南森峰激光科技股份有限公司 | Numerical control roll lathe grinding test method, system, terminal and storage medium |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4136390A (en) * | 1976-11-18 | 1979-01-23 | Houdaille Industries, Inc. | Grinding control system for forming non-circular punching tools |
| US4179854A (en) * | 1978-07-18 | 1979-12-25 | Toyoda Koki Kabushiki Kaisha | Grinding machine with rest apparatus |
| US4608643A (en) * | 1983-08-18 | 1986-08-26 | Spiral Step Tool Company | Automatic tool grinding machine with computerized control |
| US5289660A (en) * | 1992-04-25 | 1994-03-01 | Okuma Corporation | Method and apparatus for grinding non-circular workpiece |
-
1994
- 1994-06-10 CN CN94107058A patent/CN1067619C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4136390A (en) * | 1976-11-18 | 1979-01-23 | Houdaille Industries, Inc. | Grinding control system for forming non-circular punching tools |
| US4179854A (en) * | 1978-07-18 | 1979-12-25 | Toyoda Koki Kabushiki Kaisha | Grinding machine with rest apparatus |
| US4608643A (en) * | 1983-08-18 | 1986-08-26 | Spiral Step Tool Company | Automatic tool grinding machine with computerized control |
| US5289660A (en) * | 1992-04-25 | 1994-03-01 | Okuma Corporation | Method and apparatus for grinding non-circular workpiece |
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| CN1097670A (en) | 1995-01-25 |
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