CN102339033A - Numerical control system for gear grinding machine with worm grinding wheel - Google Patents
Numerical control system for gear grinding machine with worm grinding wheel Download PDFInfo
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- CN102339033A CN102339033A CN2011102015703A CN201110201570A CN102339033A CN 102339033 A CN102339033 A CN 102339033A CN 2011102015703 A CN2011102015703 A CN 2011102015703A CN 201110201570 A CN201110201570 A CN 201110201570A CN 102339033 A CN102339033 A CN 102339033A
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Abstract
The invention discloses a numerical control system for a gear grinding machine with a worm grinding wheel. The numerical control system comprises a vertical cabinet type cabin, wherein an AC (Alternating Current) power supply module, a DC (Direct Current) power supply module, a main control unit and a power driving unit are arranged in the cabin; and the main control unit and the power driving unit comprises a signal receiving and processing module, an electronic gear ratio module, an error complementation module, a frequency and phase locking module and a power driving and amplifying module. The system is used as a numerical control system special for the gear grinding machine and can be used for controlling a workpiece rotating shaft by adopting a direct current servo technology; meanwhile, the system adopts a large-scale hardware integration module and a frequency and phase locking technology, so that the gear grinding machine is controlled by the system to reach the grinding precision which cannot be reached by a machine tool with the same type. The average precision of the gear grinding machine is one to two grades higher than that of the product with the same type.
Description
Technical field:
The present invention relates to the machine tool numerical control system that a kind of finishing is used, particularly a kind of gear grinding machine with worm grinding wheel digital control system.
Background technology:
The digital control system that gear grinding machine with worm grinding wheel was equipped with of present domestic same specification is external standard digital control system; Though the versatility of this standard digital control system is high, function is a lot; But be not the special system that researches and develops to a certain lathe; Both gear grinding machines can be used for, also lathes such as lathe, grinding machine can be used for.Make like this and can't let gear grinding machines realize very high grinding accuracy in use by this digital control system controlled relatively poor relatively to gear grinding machine with worm grinding wheel.
Standard universal type digital control system is to be core with a CPU, through bus mode control to other a plurality of modules.Each module all can realize the control to single axle, thereby a plurality of identical modules of the system integration realize the control to a plurality of.To different classes of lathe, CPU uses the Different software control algolithm.With gear grinding machine with worm grinding wheel, CPU calls inner 4 hardware modules and realizes the control to 4 axles, and the relation of following up of 4 axles in grinding process relies on the software algorithm of CPU equally.
Standard universal type digital control system advantage is that versatility is stronger, can be directed against dissimilar Machine Tool design different algorithms, and not need hardware is revised in a large number.But its advantage is to the deviser itself mostly, the user is used have no effect.And software algorithm control time-delay is big because it adopts, low-response (software processes is generally more than μ s level, and hardware handles can reach the ns level), causes its precision to improve.As far as gear grinding machines, precision generally is divided into 1～12 grade, and grade point is more little, and precision is high more.Use standard universal type digital control system can reach 6 grades, and use tailored version digital control system of the present invention can reach 4 grades.And integrated a plurality of functional modules are not whole work on the hardware, cause the waste of resource.
Summary of the invention:
In view of above-mentioned technical matters,,, the invention provides a kind of gear grinding machine with worm grinding wheel digital control system in order to improve machining precision control to this lathe to the type of this Special Working Technology of gear grinding machines.This system is as the special-purpose digital control system of gear grinding machines; Adopt DC servo technology control Workpiece Rotating axle; Simultaneously because system itself adopts extensive hardware integrated circuit; And use the frequency locking phaselock technique, make roll flute function under this system's control reach the lathe of the same type grinding accuracy that is beyond one's reach.Mean accuracy is than the high one～secondary of product of the same type.
Concrete technical scheme of the present invention is following:
The gear grinding machine with worm grinding wheel digital control system comprises a cabinet-type cabin, comprises AC AC power supply module, DC DC power supplier, main control unit, power drive unit in the said cabin;
Said main control unit and power drive unit comprise that signal receiving processing module, electronic gear are than module, difference complementary modulus piece, frequency locking lock phase module and power drive amplification module;
Said signal receiving processing module receives the lathe feedback signal and the Machine-Tool Control signal Processing obtains required motor encoder signal, linear encoder signal and these pulse signals of switch input signal of level module after the system; Said electronic gear is handled through the frequency multiplication frequency division according to the motor encoder signal of signal receiving processing module output than module, output emery wheel feedback signal and workpiece feedback signal; Said poor complementary modulus piece according to the linear encoder signal of signal receiving processing module output and switch input signal through error-detecting and computing, output error regulated quantity and differ from supplements and dash; Said frequency locking lock phase module dashes according to the emery wheel feedback signal that receives, workpiece feedback signal and difference supplements and handles the output main control quantity; Said power drive amplification module amplifies through system master system amount being carried out suitable gain according to the error regulated quantity and the main control quantity that receive, and output is in order to drive the parameter signal of lathe.
In the such scheme, said machine feedback signal comprises grinding wheel drive mitor code device signal, workpiece motor encoder signal, Z shaft encoder signals and Y shaft encoder signals.
In the such scheme, said motor encoder signal comprises emery wheel pulse signal, workpiece pulse signal.
In addition, each functional module is placed in the cabin with drawer-type structure in the cabin.The inner difference in functionality module of main control unit integrated hardware using card insert type structure be placed in the cabin.
The compare advantage of prior art of the present invention is:
1, the control efficiency to gear grinding machines obviously is superior to domestic product of the same type, and passes through the control of this system, and the processing precision of products of gear grinding machines is higher 1～2 grade than product of the same type.(the gear grinding machines precision generally is divided into 1～12 grade, and grade point is more little, and precision is high more.Use standard universal type digital control system can reach 6 grades, and use tailored version digital control system of the present invention can reach 4 grades.)
2, system of the present invention is strong as far as gear grinding machines specific aim, specificity, and domestic other products all adopt the standard universal system at present, see that from the utilization factor to systemic-function the utilization factor of other like products is very low, has caused the waste on technology, the resource virtually.System of the present invention is to this a kind of type of gear grinding machines, resource utilization 100%, and cost performance is high.
Description of drawings:
Further specify the present invention below in conjunction with accompanying drawing and embodiment.
Fig. 1 is the theory diagram of system of the present invention.
Fig. 2 is the theory diagram of main control unit in the system of the present invention and power drive unit.
Fig. 3 a is the nacelle exterior structural drawing of system of the present invention.
Fig. 3 b constitutes displayed map for the engine room inside of system of the present invention.
Fig. 4 is the power supply processing module figure of system of the present invention.
The principle schematic of Fig. 5 during for the practical application of system of the present invention.
Embodiment:
For technological means, creation characteristic that the present invention is realized, reach purpose and effect and be easy to understand and understand, below in conjunction with concrete diagram, further set forth the present invention.
As shown in Figure 1, the principle of system of the present invention is in a cabin, to comprise AC AC power supply module, DC DC power supplier, main control unit, four functional modules of power drive unit.
Total system is carried out Real Time Drive to lathe, simultaneously the real-time feedback of lathe is monitored, and with this drive amount is adjusted, thereby is formed a cover closed loop following control system between realization system and the lathe.
As shown in Figure 2, main control unit in the system and power drive unit comprise that signal receiving processing module, electronic gear are than module, difference complementary modulus piece, frequency locking lock phase module and power drive amplification module.
Wherein, signal receiving processing module reception lathe feedback signal and Machine-Tool Control signal Processing obtain required motor encoder signal, linear encoder signal and these pulse signals of switch input signal of level module after the system; Electronic gear is handled through the frequency multiplication frequency division according to the motor encoder signal of signal receiving processing module output than module, output emery wheel feedback signal and workpiece feedback signal; Difference complementary modulus piece according to the linear encoder signal of signal receiving processing module output and switch input signal through error-detecting and computing, output error regulated quantity and differ from supplements and dash; Frequency locking lock phase module dashes according to the emery wheel feedback signal that receives, workpiece feedback signal and difference supplements and handles the output main control quantity; The power drive amplification module amplifies through system master system amount being carried out suitable gain according to the error regulated quantity and the main control quantity that receive, and output is in order to drive the parameter signal of lathe.
It is pointed out that above-mentioned machine feedback signal comprises grinding wheel drive mitor code device signal, workpiece motor encoder signal, Z shaft encoder signals and Y shaft encoder signals.And motor encoder signal wherein comprises emery wheel pulse signal, workpiece pulse signal.
In the operational process, system detects emery wheel signal, workpiece signal and other lathe signal in real time, and feasible according to the algorithm of design is that core forms main pulse and feedback pulse with emery wheel signal, workpiece signal; Other lathe signals form real-time poor supplements and dash.After main pulse, feedback pulse and difference supplements are rushed in the frequency locking phase locking unit; At first will differ from supplements and dash adding main pulse or feedback pulse synchronously; Carry out the comparison of phase place and frequency between the two-way pulse that forms, finally obtaining difference is exactly the difference equivalent of given action of lathe and actual act.This equivalent ingoing power amplification module is carried out power amplification, just obtain the drive amount of next step action of lathe.
Shown in Fig. 3 a and Fig. 3 b, cabinet-type is adopted in the cabin of system of the present invention, and each functional module is placed in the cabin with drawer-type structure in the cabin in, and main control unit inside difference in functionality module integrated hardware using card insert type structure be placed in the cabin.Drawer structure in the cabin is respectively power drive unit 301, main control unit 302, DC DC power supplier 303 and AC AC power supply module 304 from top to bottom.In addition, also be provided with signal input output interface 305 on top, cabin.
As shown in Figure 4, the described power supply processing module of native system comprises AC AC power supply module and DC DC power supplier, only needs the outside that 380V is provided three-phase supply, for other unit of system the different working power supply is provided after internal system AC, the DC resume module.
As shown in Figure 5; This figure is the working control principle signal of system of the present invention; Figure medium plain emery wheel motor encoder, workpiece motor encoder, Y axle linear encoder, Z axle linear encoder etc. are the real-time watch device of machine feedback, and through these equipment, system obtains the real time execution situation of lathe.
System obtains given pulse and feedback pulse with the real-time feedback of given in real time, the workpiece motor of grinding wheel drive mitor through after certain algorithm process, obtain after this two-way pulse is handled through frequency locking lock mutually feeding back and given between frequency-splitting through carry out main regulation after the DA conversion, phase difference value is finely tuned after the DA conversion.Other all are that difference is mended the fine adjustment amount like encoder feedback signals such as Z axle, Y axles.The Machine-Tool Control signal is issued system CPU by host computer, and system takes corresponding actions with this.
More than show and described ultimate principle of the present invention and principal character and advantage of the present invention.The technician of the industry should understand; The present invention is not restricted to the described embodiments; That describes in the foregoing description and the instructions just explains principle of the present invention; Under the prerequisite that does not break away from spirit and scope of the invention, the present invention also has various changes and modifications, and these variations and improvement all fall in the scope of the invention that requires protection.The present invention requires protection domain to be defined by appending claims and equivalent thereof.
Claims (3)
1. the gear grinding machine with worm grinding wheel digital control system comprises a cabinet-type cabin, comprises AC AC power supply module, DC DC power supplier, main control unit, power drive unit in the said cabin; It is characterized in that,
Said main control unit and power drive unit comprise that signal receiving processing module, electronic gear are than module, difference complementary modulus piece, frequency locking lock phase module and power drive amplification module;
Said signal receiving processing module receives the lathe feedback signal and the Machine-Tool Control signal Processing obtains required motor encoder signal, linear encoder signal and these pulse signals of switch input signal of level module after the system; Said electronic gear is handled through the frequency multiplication frequency division according to the motor encoder signal of signal receiving processing module output than module, output emery wheel feedback signal and workpiece feedback signal; Said poor complementary modulus piece according to the linear encoder signal of signal receiving processing module output and switch input signal through error-detecting and computing, output error regulated quantity and differ from supplements and dash; Said frequency locking lock phase module dashes according to the emery wheel feedback signal that receives, workpiece feedback signal and difference supplements and handles the output main control quantity; Said power drive amplification module amplifies through system master system amount being carried out suitable gain according to the error regulated quantity and the main control quantity that receive, and output is in order to drive the parameter signal of lathe.
2. according to the gear grinding machine with worm grinding wheel digital control system of claim 1, it is characterized in that said machine feedback signal comprises grinding wheel drive mitor code device signal, workpiece motor encoder signal, Z shaft encoder signals and Y shaft encoder signals.
3. according to the gear grinding machine with worm grinding wheel digital control system of claim 1, it is characterized in that said motor encoder signal comprises emery wheel pulse signal, workpiece pulse signal.
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| CN2011102015703A CN102339033A (en) | 2011-07-19 | 2011-07-19 | Numerical control system for gear grinding machine with worm grinding wheel |
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Cited By (4)
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| CN102664483A (en) * | 2012-05-08 | 2012-09-12 | 苏州汇川技术有限公司 | Electronic gear proportion smooth switching system and method |
| CN103419077A (en) * | 2013-07-20 | 2013-12-04 | 佛山市迈雷特数控技术有限公司 | Novel high-precision gear grinding numerical control system |
| CN103600263A (en) * | 2013-11-08 | 2014-02-26 | 李云飞 | Numerical control system of generating gear grinding machine and control method of numerical control system |
| CN112643143A (en) * | 2020-11-13 | 2021-04-13 | 重庆大学 | Profile design method for drum-shaped worm grinding wheel of grinding face gear |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102664483A (en) * | 2012-05-08 | 2012-09-12 | 苏州汇川技术有限公司 | Electronic gear proportion smooth switching system and method |
| CN102664483B (en) * | 2012-05-08 | 2015-10-21 | 苏州汇川技术有限公司 | Electronic gear proportion takes over seamlessly system and method |
| CN103419077A (en) * | 2013-07-20 | 2013-12-04 | 佛山市迈雷特数控技术有限公司 | Novel high-precision gear grinding numerical control system |
| CN103419077B (en) * | 2013-07-20 | 2016-05-11 | 佛山市迈雷特数控技术有限公司 | Novel high finishing grinding tooth digital control system |
| CN103600263A (en) * | 2013-11-08 | 2014-02-26 | 李云飞 | Numerical control system of generating gear grinding machine and control method of numerical control system |
| CN103600263B (en) * | 2013-11-08 | 2016-06-01 | 李云飞 | A kind of generating method gear grinding machines digital control system and control method thereof |
| CN112643143A (en) * | 2020-11-13 | 2021-04-13 | 重庆大学 | Profile design method for drum-shaped worm grinding wheel of grinding face gear |
| CN112643143B (en) * | 2020-11-13 | 2022-05-06 | 重庆大学 | Profile design method for drum-shaped worm grinding wheel of grinding face gear |
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Application publication date: 20120201 |