CN103419077A - Novel high-precision gear grinding numerical control system - Google Patents
Novel high-precision gear grinding numerical control system Download PDFInfo
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Abstract
The invention discloses a novel high-precision gear grinding numerical control system which comprises a split type case, an AC power module, a DC switch power module, a main control numerical control unit and a power drive unit. The split type case comprises a plurality of independent case bodies which are arranged side by side; the AC power module, the DC switch power module, the main control numerical control unit and the power drive unit are arranged in the corresponding independent case bodies respectively and are connected with one another. The novel high-precision gear grinding numerical control system is ingenious and reasonable in design, the split type modular structural design is adopted, position relation is reasonably distributed according to difference of functions, strong and weak power and power consumption, the working stability is good, operation and daily maintenance work are controlled easily, and the working efficiency is effectively improved. Moreover, the novel high-precision gear grinding numerical control system has the gear grinding and repairing functions, dynamic balance monitoring can be conducted on gears and grinding wheels in real time, trimming and compensation can be provided timely, the grinding machining operation can be finished with high efficiency and high precision, the quality of the gears is effectively ensured, and wide popularization and application are facilitated.
Description
Technical field
The present invention relates to the Computerized Numerical Control technology field, particularly a kind of novel high finishing grinding tooth digital control system.
Background technology
The digital control system that the gear grinding machines such as the worm abrasion wheel of current domestic same specification or formed grinding wheel are equipped with is external standard digital control system (as Siemens, Japan fanuc etc.), although the versatility of this standard digital control system is high, function is a lot, but be not the system of researching and developing for a certain lathe specially, both can be for gear grinding machines, also can be for lathes such as lathe, milling machine, grinding machines.Make like this controlled and professional relative poor to gear-grinding machine of this digital control system, can't allow gear grinding machines realize in use being simple and easy to use, simple operation, real-time high-efficiency and possess again high grinding accuracy simultaneously.Even more important a bit, the price of these foreign systems is very expensive, approaches the cost of number of units control gear grinding machines 40%.Once spend the guarantee period, while breaking down, downtime is relatively long, and maintenance cost is high.
Standard universal type digital control system is that to take a CPU be core, by bus mode, other a plurality of modules is controlled.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 axles.To different classes of lathe, CPU is used different software control algorithms.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 in house software algorithm of CPU equally.This in house software algorithm is by development and Design personnel fixed routine, and secondary development person or user are difficult to deeply wherein carry out complex calculation, and the limited function code that can only provide by it is done external arithmetic, is difficult to arrive the high-precision calculating that grinding requires.Especially the requirement of gear grinding machines grinding process is very high, requires on the one hand stock removal is accurately controlled to (comprising profile of tooth, transverse tooth thickness and helical angle etc.), to optional tooth number, accurately divides tooth; On the other hand, due to the continuous wearing and tearing of emery wheel, require carrying out trace finishing, the real-time update control for grinding to it again of its positional information of the emery wheel after finishing after the certain number of times of the every grinding of emery wheel.This wherein at least relates to the control of two cover kinematic chains.Certainly, carry out emery wheel profile when finishing, nearly also more complicated of the biasing of 3 diamond pens and INTERPOLATION CONTROL OF PULSE itself.Above these have all proposed very high requirement to general-purpose system, so the necessity of Special grinding number of teeth control system is apparent.
Standard universal type digital control system advantage is that versatility is stronger, algorithm that can be different for dissimilar Machine Tool design, and do not need hardware is revised in a large number.But its advantage is to the designer itself mostly, the user is used without any effect.And control because it adopts software algorithm that time delay is large, low-response (software is processed generally more than the ps level, and hardware handles can reach the ns level), cause its precision to improve.For gear grinding machines, precision generally is divided into the 1-12 level, and grade point is less, and precision is higher.The Application standard general numerical control system can reach the 5-6 level, and uses tailored version digital control system of the present invention can reach more than 3 grades, if when less demanding to grinding efficiency, its grinding accuracy can reach 2 grades or 1 grade.And on hardware, integrated a plurality of functional modules are not whole work, cause the waste of resource greatly.
Also the realization of some control program is that roll flute and fit are realized respectively on two lathes, and roll flute processing is carried out in two or many cooperations, and this efficiency is low, has high input; Also have some schemes to adopt two cover systems to control a machine tool, a set of independent control wheel grinding, finishing after another set of control abrasion of grinding wheel, grinding data and trimming data are fixed or, according to the rule of arranging, the recycling handshake realizes the SECO of grinding and finishing.This scheme not only efficiency is low, lacks flexibility, and signal is shaken hands and the fault rate of communication is high.
Therefore, need a kind of working (machining) efficiency of research and development fast, precision is high, and good stability and flexibility are high, simple to operate, and novel high finishing grinding tooth digital control system applied widely is for working as the required of generation.
Summary of the invention
For above-mentioned deficiency, the object of the invention is to, provide a kind of structural design ingenious, reasonable, working (machining) efficiency is fast, and precision is high, and simple to operate, and flexibility is high, the novel high finishing grinding tooth digital control system of good stability.
For achieving the above object, technical scheme provided by the present invention is: a kind of novel high finishing grinding tooth digital control system, it comprises Split type machine box, AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit and power drive unit, described Split type machine box comprises a plurality of independent case body that are arranged side by side, described AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit and power drive unit correspondence are arranged in independent case body corresponding thereto, and interconnect.
As a modification of the present invention, described main control numerical control unit and power drive unit comprise interconnective signal receiving processing module, task processing module, interpolation module, electronic gear proportion module, position control module and power drive amplification module.
As a modification of the present invention, described signal receiving processing module is used for receiving the lathe feedback signal and the processing of Machine-Tool Control signal obtains the required motor encoder signal of system rear class module, linear encoder signal and switch input signal.
As a modification of the present invention, described task processing module has the mode of operation of automated manner, manual mode, handwheel mode and programming mode, and this task processing module comprises carries out grinding unit, crushing operating unit and the real-time monitoring unit of grinding wheel dynamic balance.
As a modification of the present invention, described interpolation module is according to linear encoder signal and the switch input signal of the output of signal receiving processing module, and the computing of the interpolation information by error-detecting, diamond pen dressing track and grinding track, this interpolation module computing draws regulating error amount and interpolation output pulse, and outgoing position pulse signal, deposit regulating error amount and interpolation output pulse data in shared data bank simultaneously, with the positional information of real-time update grinding interpolation, realize the accurate control to every cutter stock removal.
As a modification of the present invention, described electronic gear proportion module receives the motor encoder signal of task processing module output according to signal and the position pulse signal of interpolation module output is processed by the frequency multiplication frequency division, output emery wheel feeding signal, workpiece axial feed signal and workpiece rotating signal.
As a modification of the present invention, described position control module is according to the emery wheel feeding signal received, workpiece rotating signal and the main control quantity that output is processed in interpolation output pulse is carried out to the position coordinates compensation and repair.
As a modification of the present invention, described power drive amplification module, according to the regulating error amount and the main control quantity that receive, amplifies by system master amount processed being carried out to suitable gain, and output is in order to drive the signal of lathe.
As a modification of the present invention, described machine feedback signal comprises emery wheel X-axis motor encoder signal, workpiece C spindle motor code device signal, Z shaft encoder signals and B shaft encoder signals; Described motor encoder signal comprises emery wheel feeding pulse signal, workpiece rotating signal and axial feed pulse signal.
As a modification of the present invention, it also comprises signal input output interface module and digitized positions control panel, described power drive unit, AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit, signal input output interface module and digitized positions control panel are successively set in corresponding independent case body according to order from left to right, and interconnect.
Beneficial effect of the present invention is: the present invention designs ingenious, reasonable, adopt the Split module structural design, and according to the different reasonable layout position relationships of function, strong and weak electricity and power consumption, good operating stability, and be easy to control operation and line service, effectively increase work efficiency; And possess roll flute and fit function, and can carry out the dynamic balancing monitoring to tooth and emery wheel in real time, realize making in time finishing and compensation, complete the grinding action with high efficiency, high accuracy, effectively guarantee product quality, be beneficial to wide popularization and application.
The present invention adopts Control of AC Servo Drives to control the workpiece rotating shaft, simultaneously, because system of the present invention itself adopts extensive hardware integration circuit, and application frequency locking Phase Lock Technique, make roll flute function under system of the present invention is controlled reach the lathe of the same type grinding accuracy that is beyond one's reach.Mean accuracy, than product Senior Two to three grade of the same type, can be realized roll flute, fit integrated function with the grinding machine bed of system support of the present invention, possesses automatically tooth and grinding wheel dynamic balance real time monitoring function, can realize efficient, high-precision grinding processing.Following advantage is specifically arranged.
1, the novel high finishing grinding tooth digital control system distinguishing feature of the present invention is computerization, and the modularization of driving is controlled and the digitlization that drives interface.Its hardware overall structure is more simple, compact, modularization; Software content is abundanter, with better function.
2, the novel high finishing grinding tooth digital control system of the present invention obviously is better than domestic product of the same type to the control efficiency of gear grinding machines, and the lathe of the supporting control of this novel high finishing grinding tooth digital control system, and the processing precision of products of gear grinding machines is than the high 2-3 level of product of the same type.(the gear grinding machines precision generally is divided into the 1-12 level, and grade point is less, and precision is higher.The Application standard general numerical control system can reach 6 grades, and uses the novel high finishing grinding tooth digital control system of the present invention can reach more than 4 grades).
3, the novel high finishing grinding tooth digital control system of the present invention is pointed for gear grinding machines, specificity is strong, and domestic other products all adopt the standard universal system at present, from the utilization rate to systemic-function, the utilization rate of other like products is very low, has virtually caused the waste on technology, resource.The novel high finishing grinding tooth digital control system of the present invention is for these a kind of type specialized designs research and development of gear grinding machines, and resource utilization is high, is simple and easy to use, and cost performance is high, especially is applicable to the domestic user.
Below in conjunction with accompanying drawing and embodiment, the present invention is further described.
The accompanying drawing explanation
Fig. 1 is schematic block diagram of the present invention.
Fig. 2 is main control numerical control unit in the present invention and the schematic block diagram of power drive unit.
Fig. 3 is the structural representation of the Split type machine box in the present invention.
Fig. 4 is the structural representation of the digitized positions control panel in the present invention.
Fig. 5 is AC AC power supply module in the present invention and the schematic block diagram of DC direct-current switch power supply module.
Principle schematic when Fig. 6 is practical application of the present invention.
The specific embodiment
Referring to Fig. 1 to Fig. 6, a kind of novel high finishing grinding tooth digital control system that the present embodiment provides, it comprises Split type machine box 1, AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit and power drive unit, in the present embodiment, the novel high finishing grinding tooth digital control system of the present invention also comprises signal input output interface module and digitized positions control panel 2.
Described Split type machine box 1 comprises a plurality of independent case body that are arranged side by side, and is specially independent case body 11, independent case body 12, independent case body 13, independent case body 14, independent case body 15 and independent case body 16.
According to function, strong and weak electricity and power consumption difference, described power drive unit, AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit, signal input output interface module and digitized positions control panel 2 are successively set in corresponding independent case body according to order from left to right, and interconnect.Being about to power drive unit is arranged in independent case body 11, the AC AC power supply module is arranged in independent case body 12, DC direct-current switch power supply module is arranged in independent case body 13, the main control numerical control unit is arranged in independent case body 14, the signal input output interface module is arranged in independent case body 15, digitized positions control panel 2 is arranged in independent case body 16.Each functional module adopts the Split module structural design, good operating stability, and be easy to control operation and line service, effectively increase work efficiency.
Novel high finishing grinding tooth digital control system is carried out Real Time Drive to lathe, the feedback of lathe is carried out to Real-Time Monitoring simultaneously, with this, controlled quentity controlled variable is adjusted, thereby is formed a set of closed loop following control system between the system of realization and lathe.On the sidewall of described independent case body, level is provided with many ventilation slots.
Referring to Fig. 2, described main control numerical control unit and power drive unit comprise interconnective signal receiving processing module, task processing module, interpolation module, electronic gear proportion module, position control module and power drive amplification module.The integrated hardware using plug-in structure of each module is placed on mainboard.
Described signal receiving processing module is used for receiving the lathe feedback signal and the processing of Machine-Tool Control signal obtains the required motor encoder signal of system rear class module, linear encoder signal (being generally grating scale) and switch input signal.
Described task processing module has the mode of operation of automated manner, manual mode, handwheel mode and programming mode, and this task processing module comprises carries out grinding unit, crushing operating unit and the real-time monitoring unit of grinding wheel dynamic balance.According to the functional characteristics of roll flute system, the selectively actuatable mode is as automated manner, manual mode, handwheel mode and programming mode etc.Simultaneously, requiring to carry out respectively grinding, crushing operation and grinding wheel dynamic balance according to grinding function monitors in real time.Grinding multiple tool minute cutter amount, crushing amount, grinding wheel diameter and emery wheel profile etc. are calculated automatically, and what gear hobbing was processed realizes functions such as teeth automatically.Simultaneously, this task processing module is responsible for the safety of lathe is carried out to real-time monitor task, and receive the report for police service signal energy and alarm are shut down, and effectively protect the safety of operating personnel and lathe.
Described interpolation module is according to linear encoder signal and the switch input signal of the output of signal receiving processing module, and the computing of the interpolation information (comprising the amount of feeding and feed speed etc.) by error-detecting, diamond pen dressing track and grinding track, this interpolation module computing draws regulating error amount and interpolation output pulse, and outgoing position pulse signal, deposit regulating error amount and interpolation output pulse data in shared data bank simultaneously, with the positional information of real-time update grinding interpolation, realize the accurate control to every cutter stock removal.Compare with the traditional common digital control system, no longer need complicated artificial programming compensation to go to realize, the complexity problem asynchronous with data of having avoided better using occurs.
Described electronic gear proportion module receives the motor encoder signal of task processing module output according to signal and the position pulse signal of interpolation module output is processed by the frequency multiplication frequency division, output emery wheel feeding signal, workpiece axial feed signal and workpiece rotating signal.
Described position control module is according to the emery wheel feeding signal received, workpiece rotating signal and the main control quantity that output is processed in interpolation output pulse is carried out to the position coordinates compensation and repair.Simultaneously, because roll flute and fit adopt shared roll flute data and the pattern of trimming data, digital control compensation more in time, more thorough.
Described power drive amplification module, according to the regulating error amount and the main control quantity that receive, amplifies by system master amount processed being carried out to suitable gain, and output is in order to drive the signal of lathe.
Described machine feedback signal comprises emery wheel X-axis motor encoder signal, workpiece C spindle motor code device signal, Z shaft encoder signals and B shaft encoder signals; The closed-loop Control Shaft can be converted to the half-closed loop control axle under particular case; such as running into the position probing feedback element, as grating scale, damage; now by revising parameter, the closed-loop Control Shaft can be converted to the half-closed loop control axle; remove grating scale; use motor encoder as the position probing feedback element; but this lathe of Interim use, shorten downtime greatly.
In running, the novel high finishing grinding tooth digital control system of the present invention detects grinding wheel dynamic balance signal, workpiece signal and other lathe signal in real time, makes according to the algorithm of design that to take grinding wheel dynamic balance signal, workpiece signal be that core forms main pulse and feedback pulse; Other lathe signal formation real-time interpolation pulses.After main pulse, feedback pulse and interpolation pulse enter the frequency locking phase locking unit, at first the interpolation impulsive synchronization is added to main pulse or feedback pulse, carry out the comparison of phase place and frequency between the two-way pulse formed, finally obtaining difference is exactly the difference equivalent of the given action of lathe and actual act.This equivalent ingoing power drive amplification module is carried out to power amplification, just obtain the driving amount of next step action of lathe.
Described motor encoder signal comprises emery wheel feeding pulse signal, workpiece rotating signal and axial feed pulse signal, and eight channel axis control signals possess interchangeability, when a certain motor encoder signal interface breaks down, this axle of maskable, shining upon a certain is not this axle with passage, and changing binding post can use.
Referring to Fig. 5, power supply processing unit in the novel high finishing grinding tooth digital control system of the present invention comprises AC AC power supply module and DC direct-current switch power supply module, only need outside that the 380V three phase mains is provided, after AC AC power supply module and DC direct-current switch power supply resume module, for novel high other unit module of finishing grinding tooth digital control system of the present invention provides different working powers, these comprise the normal power demands such as 24V, 12V, 5V and common port.
Referring to Fig. 6, working control principle schematic for the novel high finishing grinding tooth digital control system of the present invention, figure medium plain emery wheel motor rotary encoder, 1,000,000 line code dishes (workpiece motor encoder), X axle linear encoder, Z axle linear encoder and automatically tooth probe signals etc. is the real-time monitoring device of machine feedback, by these feedback devices, control system has obtained the real time execution information of lathe.
The novel high finishing grinding tooth digital control system of the present invention obtains the Real-time Feedback of the real-time setting of grinding wheel drive mitor, workpiece motor the strict mathematical relationship of given pulse and feedback pulse after certain algorithm process, by this two-way pulse through after the phase-locked processing of frequency locking, obtain feedback with given between frequency-splitting through after DA conversion, carrying out main regulation, phase difference value is finely tuned after DA changes.Other are all interpolation fine adjustment amounts as encoder feedback signals such as Z axis, X-axis.The Machine-Tool Control signal is issued the main control numerical control unit by host computer, and the main control numerical control unit is taked corresponding actions with this.When the main control numerical control unit monitors the grinding wheel dynamic balance abnormal signal, can intelligent decision call the crushing module and repair in time and compensate, complete the grinding action with high efficiency, high accuracy.
The announcement of book and instruction according to the above description, those skilled in the art in the invention can also be changed and be revised above-mentioned embodiment.Therefore, the present invention is not limited to the specific embodiment disclosed and described above, to modifications and changes more of the present invention, also should fall in the protection domain of claim of the present invention.In addition, although used some specific terms in this specification, these terms just for convenience of description, do not form any restriction to the present invention, adopt the system of other structure same or analogous with it, all in protection domain of the present invention.
Claims (10)
1. a novel high finishing grinding tooth digital control system, it is characterized in that, it comprises Split type machine box, AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit and power drive unit, described Split type machine box comprises a plurality of independent case body that are arranged side by side, described AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit and power drive unit correspondence are arranged in independent case body corresponding thereto, and interconnect.
2. novel high finishing grinding tooth digital control system according to claim 1, it is characterized in that, described main control numerical control unit and power drive unit comprise interconnective signal receiving processing module, task processing module, interpolation module, electronic gear proportion module, position control module and power drive amplification module.
3. novel high finishing grinding tooth digital control system according to claim 2, it is characterized in that, described signal receiving processing module is used for receiving the lathe feedback signal and the processing of Machine-Tool Control signal obtains the required motor encoder signal of system rear class module, linear encoder signal and switch input signal.
4. novel high finishing grinding tooth digital control system according to claim 3, it is characterized in that, described task processing module has the mode of operation of automated manner, manual mode, handwheel mode and programming mode, and this task processing module comprises carries out grinding unit, crushing operating unit and the real-time monitoring unit of grinding wheel dynamic balance.
5. novel high finishing grinding tooth digital control system according to claim 4, it is characterized in that, described interpolation module is according to linear encoder signal and the switch input signal of the output of signal receiving processing module, and by error-detecting, the computing of the interpolation information of diamond pen dressing track and grinding track, this interpolation module computing draws regulating error amount and interpolation output pulse, and outgoing position pulse signal, deposit regulating error amount and interpolation output pulse data in shared data bank simultaneously, positional information with real-time update grinding interpolation, the accurate control of realization to every cutter stock removal.
6. novel high finishing grinding tooth digital control system according to claim 5, it is characterized in that, described electronic gear proportion module receives the motor encoder signal of task processing module output according to signal and the position pulse signal of interpolation module output is processed by the frequency multiplication frequency division, output emery wheel feeding signal, workpiece axial feed signal and workpiece rotating signal.
7. novel high finishing grinding tooth digital control system according to claim 6, it is characterized in that, described position control module is according to the emery wheel feeding signal received, workpiece rotating signal and the main control quantity that output is processed in interpolation output pulse is carried out to the position coordinates compensation and repair.
8. novel high finishing grinding tooth digital control system according to claim 7, it is characterized in that, described power drive amplification module, according to the regulating error amount and the main control quantity that receive, amplifies by system master amount processed being carried out to suitable gain, and output is in order to drive the signal of lathe.
9. novel high finishing grinding tooth digital control system according to claim 8, is characterized in that, described machine feedback signal comprises emery wheel X-axis motor encoder signal, workpiece C spindle motor code device signal, Z shaft encoder signals and B shaft encoder signals; Described motor encoder signal comprises emery wheel feeding pulse signal, workpiece rotating signal and axial feed pulse signal.
10. novel high finishing grinding tooth digital control system according to claim 1, it is characterized in that, it also comprises signal input output interface module and digitized positions control panel, described power drive unit, AC AC power supply module, DC direct-current switch power supply module, main control numerical control unit, signal input output interface module and digitized positions control panel are successively set in corresponding independent case body according to order from left to right, and interconnect.
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| CN105269080A (en) * | 2015-11-24 | 2016-01-27 | 天津第一机床总厂 | Numerical control gear shaper based on FANUC system |
| CN105553383A (en) * | 2015-12-25 | 2016-05-04 | 南京冠腾自动化科技有限公司 | Driving control method for servo driver under super-high gear ratio |
| CN108255130A (en) * | 2018-02-05 | 2018-07-06 | 重庆机床(集团)有限责任公司 | A kind of control method of grinding machine bed M values |
| CN108388201A (en) * | 2018-04-17 | 2018-08-10 | 潍坊学院 | A kind of numerically-controlled machine tool detects early warning system and its operation method automatically |
| CN108581051A (en) * | 2018-04-04 | 2018-09-28 | 浙江机电职业技术学院 | The adaptive sawtooth grinding method of saw blade gear grinding machine based on high in the clouds |
| CN111515471A (en) * | 2020-05-28 | 2020-08-11 | 西门子（中国）有限公司 | Gear grinding machine and operation control method thereof |
| CN111570938A (en) * | 2020-05-27 | 2020-08-25 | 南京工程学院 | Workpiece spindle rotation servo driving system of numerical control gear hobbing machine tool |
| CN112007416A (en) * | 2019-05-31 | 2020-12-01 | 株式会社吴英制作所 | Portable circulating filter device |
| CN113613820A (en) * | 2019-03-22 | 2021-11-05 | 雷肖尔股份公司 | Method for automatic process monitoring in continuous gear grinding |
| CN114200892A (en) * | 2021-11-01 | 2022-03-18 | 苏州谋迅智能科技有限公司 | Method and device for smooth output of interactive input device, storage medium and device |
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| CN105269080A (en) * | 2015-11-24 | 2016-01-27 | 天津第一机床总厂 | Numerical control gear shaper based on FANUC system |
| CN105553383A (en) * | 2015-12-25 | 2016-05-04 | 南京冠腾自动化科技有限公司 | Driving control method for servo driver under super-high gear ratio |
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| CN113613820A (en) * | 2019-03-22 | 2021-11-05 | 雷肖尔股份公司 | Method for automatic process monitoring in continuous gear grinding |
| CN112007416A (en) * | 2019-05-31 | 2020-12-01 | 株式会社吴英制作所 | Portable circulating filter device |
| CN111570938A (en) * | 2020-05-27 | 2020-08-25 | 南京工程学院 | Workpiece spindle rotation servo driving system of numerical control gear hobbing machine tool |
| CN111515471A (en) * | 2020-05-28 | 2020-08-11 | 西门子（中国）有限公司 | Gear grinding machine and operation control method thereof |
| CN111515471B (en) * | 2020-05-28 | 2021-03-16 | 西门子（中国）有限公司 | Gear grinding machine and operation control method thereof |
| CN114200892A (en) * | 2021-11-01 | 2022-03-18 | 苏州谋迅智能科技有限公司 | Method and device for smooth output of interactive input device, storage medium and device |
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