CN101234480A - Turbine blade digital control abrasive belt grinding machine and operating method thereof - Google Patents
Turbine blade digital control abrasive belt grinding machine and operating method thereof Download PDFInfo
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- CN101234480A CN101234480A CNA2007100198436A CN200710019843A CN101234480A CN 101234480 A CN101234480 A CN 101234480A CN A2007100198436 A CNA2007100198436 A CN A2007100198436A CN 200710019843 A CN200710019843 A CN 200710019843A CN 101234480 A CN101234480 A CN 101234480A
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Abstract
The invention discloses a turbine blade numerical control belt grinder and a control method thereof, which relates to a grinding and processing device of a turbine blade and the control method thereof, and is characterized in that: a belt wheelhead and an open numerical control system is provided on the basis of the basic parts of the original machine tool; the belt wheelhead is provided with a grinding belt tightening device and a transmission belt tightening device; a Z-axis serving motor drives a big carriage; an X-axis serving motor drives a small carriage; a C-axis drives a head frame; a B-axis drives a turret; a D-axis is a belt wheelhead motor; and each motor is connected with the control system; the control system is provided with a memory, a control circuit and a blade grinding and a controlling software module. During the operation, the original parameter is firstly input; then a blade grinding and controlling software module is automatically setting up by the system to generate a processing program, make error analysis and machining simulation; and finally a blade actual grinding processing is carried out. The turbine blade numerical control belt grinder is a five-axis and four-linkage numerical control belt grinder, and has the advantages of high efficiency, good accuracy, simple structure, low cost, and convenient control.
Description
Technical field:
The present invention relates to the process equipment of turbine blade, relate in particular to a kind of machining tool and control method thereof of finishing the grinding of spoon of blade profile on the lathe with the abrasive band that blade is clamped in.
Background technology:
Turbine blade is complex-shaped, requirement on machining accuracy is high, is the strength member in the steam turbine engine group, also is one of part of difficulty of processing maximum in the steam turbine.Be useful at present the machine tool of turbine blade Milling Process on the domestic market, comprise 5 general machining center lathes, and by 0501009 the special-purpose turbine Blade Machining center lathe of being numbered of Chinese mechanical industry Award for Science and Technology communique.And the machine tool that is used for the grinding of turbine blade curved surface profile does not appear in the newspapers as yet.By the disclosed application number of State Intellectual Property Office is 03279079.1, name is called " the powerful grinding machine of turbine blade vertical tree type blade root " patented technology, only be used for the grinding of blade and blade root working face, still do not have to finish the equipment of turbine blade curved surface profile grinding in the prior art.
Summary of the invention:
The invention provides a kind of CNC abrasive belt grinding machine of steam turbine blade and control method thereof of under a clamping, finishing the grinding of whole turbine blade curved surface profile.
Technical scheme of the present invention is: it comprises bed piece, the headstock, tailstock, saddle, upper slide rest, panoramic table composition, the headstock is fixedly connected on lathe bed one end, tailstock is slidingly arranged in the lathe bed other end, bed ways are provided with saddle, be provided with upper slide rest on saddle, panoramic table is fixedly connected on the upper slide rest.It also comprises abrasive band bistrique, digital control system in open type and each servomotor that drives the lathe power transmission shaft respectively; The abrasive band bistrique is fixedly connected on the machine tool rotary platform; In five Control Shafts of lathe, drive saddle and be the Z axle, by Z axle driven by servomotor along what machine tool guideway did that the blade longitudinal grinding moves; The driving upper slide rest is done the X-axis that is of blade radial grinding motion, by the X-axis driven by servomotor; What the driving headstock was done the blade gyration is the C axle, by C axle driven by servomotor; What the driving panoramic table rotated is the B axle, by B axle driven by servomotor; The D axle is an abrasive band bistrique driving shaft, is driven by the variable-frequency stepless speed-regulating alternating current generator; Each motor is connected with digital control system in open type by driver interface, disposes can make X, Z, B, the C axle that satisfy turbine blade curved surface profile grinding requirement and realize the memory that stores system controlling software and the executive circuit of interlock in digital control system in open type.
The abrasive band bistrique is made up of bistrique bearing, grinding head motor, driving wheel, regulating wheel, contact wheel, abrasive band and driving belt wheel set; The bistrique bearing is fixedly connected on the machine tool rotary platform, is fixedly connected with grinding head motor on the bearing; The abrasive band is arranged on driving wheel and the contact wheel, is the closed circular structure, and by the regulating wheel tensioning, driving wheel, regulating wheel and contact wheel axis are parallel to each other; Driving wheel is driven by the driving belt wheel set by grinding head motor, can realize the tensioning of driving belt by the support bar that connects driving wheel around the bearing pin swing; Regulating wheel is connected with eccentric shaft, and eccentric shaft is arranged on the support arm that is fixed in the bistrique bearing, can realize the tensioning to the abrasive band by the rotation of eccentric shaft.
Described lathe digital control system in open type is a hardware platform with industrial computer and multi-axis motion controller, cnc system software is made up of Real Time Control Function module, non real-time management function module and blade data processing module three fatware modules, industrial computer and multi-axis motion controller can communicate by isa bus, also can communicate by two-port RAM, multi-axis motion controller is connected with each servo drive unit respectively by electric wire connecting junction, and multi-axis motion controller also is connected with Machine Tool Electric Appliance with machine tools control panel by multi-functional I/O interface.
The operation control procedure of CNC abrasive belt grinding machine of steam turbine blade, carry out according to the following steps:
(1) at first require the user to select " initial parameter input " menu, by geometric parameter, each cross section discrete point coordinate and grinding process parameters of control panel input institute grinding blade at the master of system working interface.
(2) select " setting up leaf model " menu, system will set up the three-dimensional data model of blade grinding profile automatically according to institute's grinding blade geometry parameter and the discrete point coordinate that the user imported.
(3) select " numerical control program generation " menu, system will generate the numerical control program of blade sbrasive belt grinding processing automatically according to grinding process parameters and the blade three-dimensional data model that the user imported.
(4) select " Grinding Error analysis " menu, system will carry out the grinding simulation according to the numerical control program that is generated, and analyze blade grinding error, show the Grinding Error analysis result.
(5) if the Grinding Error analyzed of step (4) in the scope of user's defined, clamping is ground blade, calls the numerical control grinding program, carries out the actual grinding of blade; If its Grinding Error exceeds the defined scope, then revise grinding process parameters, and repeating step (4), until Grinding Error within user's prescribed limit.
The present invention is according to the requirement of turbine blade grinding, utilize the characteristics of modern cnc technology and abrasive band high efficient grinding, utilize original parts of machine tool, newly design and develop abrasive band bistrique, the moving digital control system in open type of five tetrads, realized a kind of grinding efficiency height, grinding accuracy is good, simple for structure, with low cost and control simple CNC abrasive belt grinding machine of steam turbine blade.
Feature of the present invention will be further described in conjunction with the accompanying drawings.
Description of drawings:
Accompanying drawing 1 is the structural representation of invention.
Among the figure: 1 bed piece, 2 saddles, 3 upper slide rests, 4 panoramic tables, 5 drive the headstocks, and 6, C axle servo drive motor, 7 synchronous pulley pairs, 8 blade of gas turbine, 9 abrasive band bistriques, 10 grinding head motors, 11X axle servo drive motor, 12, B axle servo drive motor, 13 support tailstocks, and 14, Z axle servo drive motor.
Fig. 2 is an abrasive band grinding wheel head structure schematic diagram.
Among the figure: 15 abrasive band bistrique bearings, 16 contact wheels, 17 abrasive bands, 18 regulating wheels, 19 eccentric shafts, 20V type belt, 21 bearing pins, 22 cramp bars, 23 belt wheel sets, 24 driving wheels.
Fig. 3 is the structured flowchart of digital control system.
Fig. 4 is the digital control system main functional modules.
Fig. 5 is a machine operation work flow process.
The specific embodiment:
The present invention includes bed piece 1, the headstock 5, tailstock 13, saddle 2, upper slide rest 3, panoramic table 4, abrasive band bistrique 9, digital control system in open type and drive the motor of five Control Shafts of lathe respectively, turbine blade 8 be installed on the lathe headstock 5 and tailstock 13 top between, drive by C axle servomotor 6, realize rotatablely moving of blade 8; Z axle servomotor 14 drives saddle 2, and drives abrasive band bistrique 9 is done blade 8 along machine tool guideway longitudinal grinding feed motion thus; X-axis servomotor 11 drives upper slide rest 3, and the radial feed of doing blade 8 along saddle 2 dovetail guides drive abrasive band bistrique 9 thus moves; B axle servomotor 12 drives panoramic table 4 around self rotating shaft rotation, carries out grinding with control abrasive band bistrique 9 in the normal direction of blade 8 curved surface profiles, and the D axle is an abrasive band bistrique driving shaft, is driven by variable-frequency stepless speed-regulating grinding head motor 10.
Described lathe C axle servomotor 6 output shafts dispose a high accuracy planetary reduction gear, by synchronous pulley secondary 7 and the headstock of band driving synchronously 5 main axis rotation; The headstock 5 spindle noses are equipped with special fixture, and these anchor clamps and support 13 top cooperations of tailstock are realized location and clamping to blade 8; The Z axle of lathe all provides flexible shaft coupling to link to each other with ball screw with the X-axis servomotor.
The abrasive band bistrique is made up of bearing 15, grinding head motor 10, driving wheel 24, regulating wheel 18, contact wheel 16, abrasive band 17 and driving belt wheel set 23; Bearing is fixedly connected on the machine tool rotary platform, is fixedly connected with grinding head motor 10 on the bistrique bearing 15; Abrasive band 17 is arranged on driving wheel 24 and the contact wheel 16, is the closed circular structure, and by regulating wheel 18 tensionings, driving wheel 24, regulating wheel 18 and contact wheel 16 axis are parallel to each other; Driving wheel 24 is driven by driving belt wheel set 23 by grinding head motor 10, can realize the tensioning of driving belt 20 by the cramp bar 22 that connects driving wheel 24 around bearing pin 21 swings; Regulating wheel 18 is connected with eccentric shaft 19, and eccentric shaft 19 is arranged on the support arm that is fixed in bearing, can realize the tensioning to abrasive band 17 by the rotation of eccentric shaft 19.
The control procedure of CNC abrasive belt grinding machine of steam turbine blade is controlled by digital control system in open type.Digital control system is to be the digital control system in open type of hardware platform with industrial computer (IPC) and multi-axis motion controller PMAC (Programmable Multi-AxisController).This system is a main frame with the industrial computer, is slave with the multi-axis motion controller, constitutes a kind of master slave control structure, and main frame is responsible for non real-time control tasks such as system management, user's input, interface display, and slave is responsible for the real-time control operation of digital control system.Communicating by letter and can be undertaken by isa bus between main frame and the slave also can be undertaken by two-port RAM, and the application of two-port RAM has improved the traffic rate of system, has improved the responding ability and the control accuracy of digital control system.Multi-axis motion controller is connected with each servo drive unit respectively by electric wire connecting junction, in order to position and the speed of controlling each axis servomotor, and real-time each duty of feedback servo.In addition, multi-axis motion controller also is connected with Machine Tool Electric Appliance with machine tools control panel by multi-functional I/O interface, is used for the input and output of control system switching value.
The software section of machine tool numerical control system is made up of main control module and various functional module.Main control module is system's operation interface that a close friend is provided for the user, and each functional module of system is called with the form of menu under this interface.The functional module of system can be divided into real-time control class functional module, non real-time administrative class functional module and turbine blade exclusive data processing capacity module three major types.
The control generic module is the software module of the current motion of control lathe in real time, the time response with Millisecond even requirements at the higher level, is mainly finished by multi-axis motion controller.Control class functional module comprises functions such as procedure explanation, servo-drive, motion interpolation, data acquisition and PLC in real time.The PLC software module comprises the I/O of system port mapping, return reference point, enable permission, and automatically, single step, crawl, working methods such as MDA, JOG, fast, speed adjustment such as increment, multiplying power, control subprograms such as cooling, lubricated, spindle motor start and stop are formed.
Non real-time administrative class module comprises functions such as system parameter setting, system diagnostics, system communication and NC program editing.This class software module is less demanding to time response, mainly is responsible for finishing by the PC microcomputer.
It is the correlation function module of processing at the turbine blade sbrasive belt grinding that the turbine blade exclusive data is handled the class functional module, comprises main software modules compositions such as initial parameter input, three-dimensional automatic modeling, numerical control program generation, Grinding Error analysis.Such software module is the important component part of system, is related to lathe properties such as convenience that this blade grinding machine uses, high efficiency, accuracy.
During lathe work, connect the lathe power supply by the user, start-up control system, operational system software.When carrying out the blade grinding, can operate system as follows:
(1) at first require the user to select " initial parameter input " menu, by geometric parameter, each cross section discrete point coordinate and grinding process parameters of control panel input institute grinding blade at the master of system working interface.
(2) select " setting up leaf model " menu, system will set up the three-dimensional data model of blade grinding profile automatically according to institute's grinding blade geometry parameter and the discrete point coordinate that the user imported.
(3) select " numerical control program generation " menu, system will generate the numerical control program of blade sbrasive belt grinding processing automatically according to grinding process parameters and the blade three-dimensional data model that the user imported.
(4) select " Grinding Error analysis " menu, system will carry out the grinding simulation according to the numerical control program that is generated, and analyze blade grinding error, show the Grinding Error analysis result.
(5) if the Grinding Error analyzed of step (4) in the scope of user's defined, clamping is ground blade, calls the numerical control grinding program, carries out the actual grinding of blade; If its Grinding Error exceeds the defined scope, then revise grinding process parameters, and repeating step (4), until Grinding Error within user's prescribed limit.
Claims (4)
1. CNC abrasive belt grinding machine of steam turbine blade and control method thereof, comprise bed piece, the headstock, tailstock, saddle, upper slide rest, panoramic table, the headstock is fixedly connected on lathe bed one end, tailstock is slidingly arranged in the lathe bed other end, bed ways are provided with saddle, be provided with upper slide rest on saddle, panoramic table is fixedly connected on the upper slide rest.It is characterized in that: it also comprises abrasive band bistrique, digital control system in open type and each servomotor that drives the lathe power transmission shaft respectively; The abrasive band bistrique is fixedly connected on the machine tool rotary platform; In five Control Shafts of lathe, drive saddle and be the Z axle, by Z axle driven by servomotor along what machine tool guideway did that the blade longitudinal grinding moves; The driving upper slide rest is done the X-axis that is of blade radial grinding motion, by the X-axis driven by servomotor; What the driving headstock was done the blade gyration is the C axle, by C axle driven by servomotor; What the driving panoramic table rotated is the B axle, by B axle driven by servomotor; The D axle is an abrasive band bistrique driving shaft, is driven by the variable-frequency stepless speed-regulating alternating current generator; Each motor is connected with digital control system in open type by driver interface, disposes can make X, Z, B, the C axle that satisfy turbine blade curved surface profile grinding requirement and realize the memory that stores system controlling software of interlock and circuit when holding in digital control system in open type.
2. CNC abrasive belt grinding machine of steam turbine blade according to claim 1 and control method thereof is characterized in that: the abrasive band bistrique is made up of bistrique bearing, grinding head motor, driving wheel, regulating wheel, contact wheel, abrasive band and driving belt wheel set; The bistrique bearing is fixedly connected on the machine tool rotary platform, is fixedly connected with grinding head motor on the bearing; The abrasive band is arranged on driving wheel and the contact wheel, is the closed circular structure, and by the regulating wheel tensioning, driving wheel, regulating wheel and contact wheel axis are parallel to each other; Driving wheel is driven by the driving belt wheel set by grinding head motor, can realize the tensioning of driving belt by the support bar that connects driving wheel around the bearing pin swing; The regulating wheel that is used for the abrasive band tensioning is connected with eccentric shaft, and eccentric shaft is arranged on the support arm that is fixed in the bistrique bearing.
3. CNC abrasive belt grinding machine of steam turbine blade according to claim 1 and control method thereof, it is characterized in that: described lathe digital control system in open type is a hardware platform with industrial computer and multi-axis motion controller, cnc system software is by the Real Time Control Function module, non real-time management function module and blade data processing module three fatware modules are formed, industrial computer and multi-axis motion controller can communicate by isa bus, also can communicate by two-port RAM, multi-axis motion controller is connected with each servo drive unit respectively by electric wire connecting junction, and multi-axis motion controller also is connected with Machine Tool Electric Appliance with machine tools control panel by multi-functional I/O interface.
4. CNC abrasive belt grinding machine of steam turbine blade and control method thereof is characterized in that: the operation control procedure of CNC abrasive belt grinding machine of steam turbine blade, and it is to operate control according to the following steps:
(1) at first require the user to select " initial parameter input " menu, by geometric parameter, each cross section discrete point coordinate and grinding process parameters of control panel input institute grinding blade at the master of system working interface.
(2) select " setting up leaf model " menu, system will set up the three-dimensional data model of blade grinding profile automatically according to institute's grinding blade geometry parameter and the discrete point coordinate that the user imported.
(3) select " numerical control program generation " menu, system will generate the numerical control program of blade sbrasive belt grinding processing automatically according to grinding process parameters and the blade three-dimensional data model that the user imported.
(4) select " Grinding Error analysis " menu, system will carry out the grinding simulation according to the numerical control program that is generated, and analyze blade grinding error, show the Grinding Error analysis result.
(5) if the Grinding Error analyzed of step (4) in the scope of user's defined, clamping is ground blade, calls the numerical control grinding program, carries out the actual grinding of blade; If its Grinding Error exceeds the defined scope, then revise grinding process parameters, and repeating step (4), until Grinding Error within user's prescribed limit.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710019843A CN100577358C (en) | 2007-01-31 | 2007-01-31 | Turbine blade digital control abrasive belt grinding machine and operating method thereof |
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| CN200710019843A CN100577358C (en) | 2007-01-31 | 2007-01-31 | Turbine blade digital control abrasive belt grinding machine and operating method thereof |
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| CN101234480A true CN101234480A (en) | 2008-08-06 |
| CN100577358C CN100577358C (en) | 2010-01-06 |
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| CN101941170A (en) * | 2010-08-06 | 2011-01-12 | 杭州机床集团有限公司 | Method for grinding interference-free periphery of curve surface of vane |
| CN101559574B (en) * | 2008-04-18 | 2011-03-23 | 北京胜为弘技数控装备有限公司 | Numerical control abrasive belt grinding machine with six-axis linkage and method for machining blade of turbine |
| CN101664897B (en) * | 2009-09-11 | 2011-06-22 | 重庆三磨海达磨床有限公司 | Coated abrasive grinder of propeller blade |
| CN102107385A (en) * | 2010-12-20 | 2011-06-29 | 上海机床厂有限公司 | Numerical-control-linkage-technology-based camshaft grinder abrasive belt grinding device |
| CN102259300A (en) * | 2011-08-04 | 2011-11-30 | 西北工业大学 | Polishing mechanism for air inlet/outlet edges of blades |
| CN102303275A (en) * | 2011-08-11 | 2012-01-04 | 西北工业大学 | Flexible polishing mechanism for blade profile abrasive belt |
| CN101786237B (en) * | 2009-12-29 | 2012-10-10 | 东方电气集团东方汽轮机有限公司 | Fixture used for processing small moving blade in turbine and processing method thereof |
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| CN103764344A (en) * | 2011-08-26 | 2014-04-30 | 斯奈克玛 | Method for manufacturing a component using forging |
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| CN109702600A (en) * | 2018-12-28 | 2019-05-03 | 枣庄北航机床创新研究院有限公司 | A kind of blade polishing numerical control machining center with ten kinematic axis |
| CN111002120A (en) * | 2019-12-25 | 2020-04-14 | 保定向阳航空精密机械有限公司 | Special grinding machine for grinding shaft diameter of composite propeller blade |
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| CN101664897B (en) * | 2009-09-11 | 2011-06-22 | 重庆三磨海达磨床有限公司 | Coated abrasive grinder of propeller blade |
| CN101786237B (en) * | 2009-12-29 | 2012-10-10 | 东方电气集团东方汽轮机有限公司 | Fixture used for processing small moving blade in turbine and processing method thereof |
| CN101941170A (en) * | 2010-08-06 | 2011-01-12 | 杭州机床集团有限公司 | Method for grinding interference-free periphery of curve surface of vane |
| CN102107385A (en) * | 2010-12-20 | 2011-06-29 | 上海机床厂有限公司 | Numerical-control-linkage-technology-based camshaft grinder abrasive belt grinding device |
| CN102259300A (en) * | 2011-08-04 | 2011-11-30 | 西北工业大学 | Polishing mechanism for air inlet/outlet edges of blades |
| CN102259300B (en) * | 2011-08-04 | 2013-06-05 | 西北工业大学 | Polishing mechanism for air inlet/outlet edges of blades |
| CN102303275B (en) * | 2011-08-11 | 2013-12-04 | 西北工业大学 | Flexible polishing mechanism for blade profile abrasive belt |
| CN102303275A (en) * | 2011-08-11 | 2012-01-04 | 西北工业大学 | Flexible polishing mechanism for blade profile abrasive belt |
| CN103764344A (en) * | 2011-08-26 | 2014-04-30 | 斯奈克玛 | Method for manufacturing a component using forging |
| CN103042445A (en) * | 2012-12-17 | 2013-04-17 | 长春设备工艺研究所 | Grinding device for monoblock pump valve spool with tangent conical surfaces and cylindrical surfaces |
| CN105312983A (en) * | 2014-12-05 | 2016-02-10 | 电子科技大学 | Intelligent grinding machining system for integrated propeller and method thereof |
| CN105312983B (en) * | 2014-12-05 | 2018-07-27 | 电子科技大学 | Solid propeller intelligence grinding system |
| CN105290926A (en) * | 2014-12-16 | 2016-02-03 | 电子科技大学 | Blade intelligent grinding flexible manufacturing system |
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| CN109605145A (en) * | 2018-12-29 | 2019-04-12 | 东莞市彼联机械科技有限公司 | Part external arc grinding attachment |
| CN111002120A (en) * | 2019-12-25 | 2020-04-14 | 保定向阳航空精密机械有限公司 | Special grinding machine for grinding shaft diameter of composite propeller blade |
| CN113523974A (en) * | 2021-09-17 | 2021-10-22 | 邳州市江山木业有限公司 | Grinding device for special-shaped furniture |
| CN113523974B (en) * | 2021-09-17 | 2021-11-30 | 邳州市江山木业有限公司 | Grinding device for special-shaped furniture |
| CN115488734A (en) * | 2022-09-29 | 2022-12-20 | 中国航发动力股份有限公司 | Chamfering machining method for edge plate face of compressor rotor blade |
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