CN201922314U - Measuring device for state parameters of numerical control machine on basis of fiber grating sensor - Google Patents
Measuring device for state parameters of numerical control machine on basis of fiber grating sensor Download PDFInfo
- Publication number
- CN201922314U CN201922314U CN 201020661265 CN201020661265U CN201922314U CN 201922314 U CN201922314 U CN 201922314U CN 201020661265 CN201020661265 CN 201020661265 CN 201020661265 U CN201020661265 U CN 201020661265U CN 201922314 U CN201922314 U CN 201922314U
- Authority
- CN
- China
- Prior art keywords
- fiber
- control machine
- grating sensor
- optic grating
- machine tool
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Images
Abstract
The utility model discloses a measuring device for state parameters of a numerical control machine on the basis of a fiber grating sensor. The measuring device is characterized in that the measuring device comprises a fiber grating measuring instrument, a signal processing unit and a data output interface unit, wherein the output port of the fiber grating instrument is connected with one end of the signal processing unit, and the other end of the signal processing unit is connected with the data output interface unit. The measuring device provided by the utility model not only can be used as a signal acquisition device for manual and automatic measurement to temperature and strain of the numerical control machine, but also can be used as a lower-position computer of a compensation device, so as to output the state parameters of the numerical control machine. The utility model solves the problems that the installation of conventional sensors such temperature sensors, deformation sensors and vibration sensors are complex and the use is inconvenient. The measuring device has the advantages that the structure is simple, the use is convenient, the anti-interference capability is strong, and the measuring accuracy is high.
Description
Technical field
The utility model Digit Control Machine Tool measuring technique is a kind of Digit Control Machine Tool state parameter measurement mechanism based on fiber-optic grating sensor, and temperature, deformation and vibration that this device is used for Digit Control Machine Tool are measured.
Background technology
For high speed, high-precision numerical control machine, factors such as temperature fluctuation, critical component deformation and machine tool structure vibration will influence machining accuracy of NC machine tool and working (machining) efficiency, even influence the normal operation of Digit Control Machine Tool.Therefore, must nibble and process vibration and measure and monitor temperature, the critical component deformation of Digit Control Machine Tool key position, and take necessary temperature-compensating and deformation braking measure.Therefore how monitoring the temperature and the vibration parameters of Digit Control Machine Tool exactly, is high speed, high-precision numerical control machine problem demanding prompt solution.
Yet, traditional thermocouple, thermal resistance equitemperature sensor, inductance displacement sensor and acceleration transducer etc., layout and install restricted at Digit Control Machine Tool, and that line and signal are handled is complicated, transfer of data is difficult, reliability is not high, and it is even more serious especially to need to measure the problem of counting when a lot.
Summary of the invention
The purpose of this utility model is to overcome deficiency of the prior art, and a kind of Digit Control Machine Tool state parameter measurement mechanism based on fiber-optic grating sensor is provided, and this device has the strong and high advantage of certainty of measurement simple in structure, easy to use, anti-interference.
To achieve these goals, a kind of Digit Control Machine Tool state parameter measurement mechanism based on fiber-optic grating sensor that the utility model provides is characterized in that this device comprises fiber grating measuring instrument, signal processing unit and data output interface unit; The output port of fiber grating measuring instrument links to each other with an end of signal processing unit, the other end of signal processing unit and data output interface unit.
The utility model promptly can be used as signal pickup assembly, and lathe temperature and strain are carried out manually and automatically measuring, and can be used as the host computer of compensation arrangement again, output conditions of machine tool parameter.The utility model has solved the conventional temperature of present employing, the installation complexity of distortion and vibration measurement sensor, awkward problem, it is based on the multivariable of fiber-optic grating sensor and measures network in real time, be implemented in the temperature of Digit Control Machine Tool key position in the Digit Control Machine Tool process, the on-line measurement of vibration is nibbled and is processed in critical component deformation, the feedback signal that provides from this measurement mechanism, can combine with digital control system, realize the numerical control machining tool heat error metrophia compensation, functions such as machining deformation error measure compensation and processing vibration measurement control promote Digit Control Machine Tool complete machine processing characteristics.
Description of drawings
Fig. 1 is the structured flowchart of the utility model device;
Fig. 2 is the mounting means of fiber-optic grating sensor;
Fig. 3 is that the sensor of Digit Control Machine Tool temperature measurement is arranged schematic diagram;
Fig. 4 is that main shaft of numerical control machine tool component vibration measuring transducer is arranged schematic diagram;
Fig. 5 is based on Digit Control Machine Tool temperature, deformation and the vibration measurement schematic diagram of fiber-optic grating sensor.
The specific embodiment
Below in conjunction with accompanying drawing and example the utility model is further detailed.
As shown in Figure 1, the utility model device comprises fiber grating measuring instrument, signal processing unit 6 and data output interface unit 7.The fiber grating measuring instrument comprises fiber-optic grating sensor group, coupler 2, wideband light source 1, wavelength monitoring unit 4 and the wavelength detecting unit 5 of connecting successively by optical fiber.The fiber-optic grating sensor of series connection by the different fiber-optic grating sensor 3.1 of operation wavelength, fiber-optic grating sensor 3.2 ... fiber-optic grating sensor 3.n constitutes, each fiber-optic grating sensor sends the signal of different wave length, and can not disturb each other, the fiber-optic grating sensor that is together in series can obtain temperature, strain and integrated signal according to the difference of bonding method, is connected to signal processing unit by data/address bus then.
The data output interface unit is at least a in CPLD, RS232 or the Ethernet interface, be used for analysis result output or and digital control system between transmit.Specifically the fiber grating measuring instrument is linked to be a network, is installed on the Digit Control Machine Tool, in the digital control system of realization to temperature, critical component deformation and the machine tool structure result of oscillation conveying in real time of Digit Control Machine Tool moving component.
When fiber-optic grating sensor is installed on the Digit Control Machine Tool, if install improper, may lathe stress and temperature can cause that all the grating cycle changes, yet the wavelength checkout gear can't be differentiated this variation owing to stress still is that temperature causes.Therefore, when fiber-optic grating sensor is installed, if with the close installation of two fiber-optic grating sensors that are cascaded, and make one of them fiber-optic grating sensor only to responsive to temperature, and the another fiber-optic grating sensor is that counter stress is also to responsive to temperature, as shown in Figure 2, fiber-optic grating sensor integral body all is bonded in the position that needs to detect stress firmly---whole bonding mode A connects, and another fiber-optic grating sensor is only bonded at its two ends---, and two ends bonding mode B connects (two adhesive spots 8.1, adhesive spots 8.2).Like this, counter stress and variations in temperature are all responsive simultaneously according to the fiber-optic grating sensor of two ends bonding mode, and the fiber-optic grating sensor of whole bonding is then only to responsive to temperature.Signal processing apparatus utilizes the fiber-optic grating sensor temperature sensor signal of whole bonding mode, utilizes the fiber-optic grating sensor stress of two ends bonding mode and temperature mixed signal to deduct the then separable variation that goes out stress of the fiber-optic grating sensor temperature signal of whole bonding.
The technical scheme that numerical control machining tool heat error of the present utility model is measured is:
In the numerical control machine heat machine temperature rise process, the thermal deformation of machine tool structure exerts an influence to the positioning accuracy in the lathe working space, and it is basic that monitoring of lathe hot property and follow-up relevant heat error compensation are based on machine tool structure critical piece key point temperature measurement.For the hot error of main shaft of numerical control machine tool, adopt main shaft key position temperature and strain measurement method, the measuring point 9.1 of main shaft and measuring point 9.2 as shown in Fig. 3 a.Because the distributed Prague optical fiber grating sensing system is the fiber-optic grating sensor of a plurality of different operating wavelength of serial connection in an optical fiber, can be simultaneously each critical piece of Digit Control Machine Tool be carried out temperature and strain measurement.As measurement for machine pillar, measure when considering temperature rise and strain, then adopt fiber-optic grating sensor strain rosette kind of arrangements, the linear arrangement direction of the measuring point 9.3 of column and lathe bed, measuring point 9.4 as shown in Fig. 3 a, wherein sensor is according to the strain rosette of setting combination of shapes, strain arrangement form shown in Fig. 3 b, based on corresponding strain rosette type, according to the corresponding point position on the machine tool component of strain rosette place, the elastic modelling quantity of material and Poisson's ratio can obtain at the space of components heat distortion amount of Digit Control Machine Tool parts in the hot machine temperature rise of lathe process.
As choose spindle nose arranged light fiber grating sensor, same fiber-optic grating sensor becomes conventional used strain rosette structure according to certain combination of shapes, based on corresponding strain rosette type, according to the corresponding point position on the main shaft of strain rosette place, the elastic modelling quantity of material and Poisson's ratio, and consider to have obtained the space thermal deformation of lathe dependency structure, then can obtain respective major axes end in the main shaft course of work at the space heat distortion amount of hot machine temperature rise process.As in Fig. 3 a, the key position of the hot error-detecting of main shaft, sensor arrangement has provided the point position of main shaft upper sensor among Fig. 3 a, detected temperatures and deformation quantity, each sensor circle distribution, and each sensor is arranged to the strain rosette type, also adopts the strain rosette type shown in Fig. 3 b, and Fig. 3 b is conventional several strain rosette type signals.
And the strain measurement of lathe axis servomotor is owing to be in rotation status in the leading screw course of work, so measurement of not carrying out dependent variable for leading screw, so axis servomotor temperature rise be based on fiber-optic grating sensor, the key point temperature rise curve of measurement component is as the temperature rise curve of bearing block, oil pressure valve, feed screw nut and the environment at axis servomotor ball-screw two ends.
The vibration measurement technique scheme of Digit Control Machine Tool critical piece of the present utility model is:
Based on fiber-optic grating sensor lathe critical piece such as lathe bed, machine tool chief axis 10 distributed networks are measured, as measurement for main shaft, as shown in Figure 4, spindle nose can adopt fiber-optic grating sensor according to the circle distribution measuring point, and paste according to setting strain rosette, evenly arrange along whole main-shaft axis.As the dynamic response of considering cutter then adopts the main shaft zinc bar to replace cutter, and the layout and the main shaft of its fiber-optic grating sensor are similar.And the machine tool structure of considering for need, machine pillar as shown in Figure 3 and lathe bed measuring point 9.3, measuring point 9.4, the layout of its sensor adopts strain rosette kind of arrangements in upright arrangement to measure too.So the work of in the lathe course of work, introducing excitation input, perhaps by the hammering mode test of setting, then can be based on the fiber-optic grating sensor strain rosette arrangement form of setting, according to the corresponding point position on the main shaft of strain rosette place, the elastic modelling quantity of material and Poisson's ratio, respectively all can obtain along each locational space of parts that measuring point is arranged to the dynamic strain displacement, thereby utilize the strain modal analysis method, set up the model of vibration strain-responsive, can carry out as problem of stress concentration, partial structurtes influence of change in the working angles is analyzed, and the model based on the vibration strain-responsive also obtains the displacement strain mode simultaneously, thereby realizes the monitoring to the Machine Tool Dynamics characteristic.
The utility model workflow is:
The Digit Control Machine Tool critical piece is arranged the layout installation form of each parts such as Fig. 2, Fig. 3, shown in Figure 4 based on the fiber grating Fibre Optical Sensor.The complete structure schematic block diagram of workflow as shown in Figure 5, then by fiber-optic grating sensor, the measuring instrument of compositions such as wideband light source carries out data read to the fiber-optic grating sensor of layouting, obtain the temperature and the strain data of each position measuring point, then by signal processing unit according to measuring point strain rosette form and arrange the point position data, the temperature and the strain data of the corresponding measuring point of measuring according to measuring instrument, the elastic modelling quantity of material and Poisson's ratio, obtain the strain mode parameter and the displacement modes parameter of corresponding measuring point temperature rise curve and Digit Control Machine Tool critical piece, by the data output interface unit data are sent then.
Claims (2)
1. the Digit Control Machine Tool state parameter measurement mechanism based on fiber-optic grating sensor is characterized in that this device comprises fiber grating measuring instrument, signal processing unit and data output interface unit; The output port of fiber grating measuring instrument links to each other with an end of signal processing unit, the other end of signal processing unit and data output interface unit.
2. the Digit Control Machine Tool state parameter measurement mechanism based on fiber-optic grating sensor according to claim 1, it is characterized in that, the fiber grating measuring instrument comprises the wavelength detecting unit, and the wideband light source, coupler, fiber-optic grating sensor and the wavelength monitoring unit that connect by optical fiber successively, one end of wavelength detecting unit links to each other with coupler by optical fiber, and the other end is as the output port of fiber grating measuring instrument; The fiber-optic grating sensor of series connection is made of the different fiber-optic grating sensor of operation wavelength mutually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020661265 CN201922314U (en) | 2010-12-15 | 2010-12-15 | Measuring device for state parameters of numerical control machine on basis of fiber grating sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201020661265 CN201922314U (en) | 2010-12-15 | 2010-12-15 | Measuring device for state parameters of numerical control machine on basis of fiber grating sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201922314U true CN201922314U (en) | 2011-08-10 |
Family
ID=44426183
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201020661265 Expired - Fee Related CN201922314U (en) | 2010-12-15 | 2010-12-15 | Measuring device for state parameters of numerical control machine on basis of fiber grating sensor |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201922314U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490087A (en) * | 2011-11-28 | 2012-06-13 | 武汉理工大学 | Device and method for measuring axial vibration of feed drive mechanism of numerical control machine |
| CN102658503A (en) * | 2012-02-06 | 2012-09-12 | 西安交通大学 | Modal testing method of numerical control machine tool feed system based on built-in sensors |
| CN102672209A (en) * | 2012-05-14 | 2012-09-19 | 华中科技大学 | Cutter with function of decoupling temperature of turning area |
| CN103537717A (en) * | 2013-08-02 | 2014-01-29 | 华中科技大学 | Swinging type variable dip angle non-circular cutting mechanism and digital controlled lathe thereof |
| CN104772657A (en) * | 2015-04-10 | 2015-07-15 | 上海交通大学 | Cutting temperature monitoring device and method of side milling process |
| CN117029713A (en) * | 2023-10-08 | 2023-11-10 | 中科航迈数控软件(深圳)有限公司 | Machine tool spindle deformation monitoring system, method, equipment and medium |
-
2010
- 2010-12-15 CN CN 201020661265 patent/CN201922314U/en not_active Expired - Fee Related
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102490087A (en) * | 2011-11-28 | 2012-06-13 | 武汉理工大学 | Device and method for measuring axial vibration of feed drive mechanism of numerical control machine |
| CN102490087B (en) * | 2011-11-28 | 2013-12-25 | 武汉理工大学 | Device and method for measuring axial vibration of feed drive mechanism of numerical control machine |
| CN102658503A (en) * | 2012-02-06 | 2012-09-12 | 西安交通大学 | Modal testing method of numerical control machine tool feed system based on built-in sensors |
| CN102658503B (en) * | 2012-02-06 | 2014-04-23 | 西安交通大学 | Modal testing method of numerical control machine tool feed system based on built-in sensors |
| CN102672209A (en) * | 2012-05-14 | 2012-09-19 | 华中科技大学 | Cutter with function of decoupling temperature of turning area |
| CN102672209B (en) * | 2012-05-14 | 2014-03-26 | 华中科技大学 | Cutter with function of decoupling temperature of turning area |
| CN103537717A (en) * | 2013-08-02 | 2014-01-29 | 华中科技大学 | Swinging type variable dip angle non-circular cutting mechanism and digital controlled lathe thereof |
| CN103537717B (en) * | 2013-08-02 | 2016-01-13 | 华中科技大学 | A kind of swing type becomes inclination angle non-circular cutting mechanism and numerically controlled lathe thereof |
| CN104772657A (en) * | 2015-04-10 | 2015-07-15 | 上海交通大学 | Cutting temperature monitoring device and method of side milling process |
| CN117029713A (en) * | 2023-10-08 | 2023-11-10 | 中科航迈数控软件(深圳)有限公司 | Machine tool spindle deformation monitoring system, method, equipment and medium |
| CN117029713B (en) * | 2023-10-08 | 2024-02-20 | 中科航迈数控软件(深圳)有限公司 | Machine tool spindle deformation monitoring system, method, equipment and medium |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201922314U (en) | Measuring device for state parameters of numerical control machine on basis of fiber grating sensor | |
| CN102122146B (en) | Thermal-error real-time compensation system for high-speed precise machining and compensation method thereof | |
| CN203894596U (en) | Multi-parameter online active monitoring system for machining states of numerical control machine bed | |
| CN104646565B (en) | A kind of full-automatic stamping line real-time monitoring system | |
| CN104391480B (en) | Expert system based numerically-controlled machine tool fault diagnosis system | |
| CN103823409A (en) | Numerical machine tool machining state multi-parameter online active monitoring system and implement method thereof | |
| CN102564334B (en) | Long period fiber grating strain gauge for micro strain detection of high-temperature pipes | |
| CN102794565A (en) | LabView-based real-time monitoring system for laser cladding/laser re-melting process temperature field | |
| CN105269404B (en) | Numerically-controlled machine tool point of a knife dynamic characteristic accuracy detecting device and its method | |
| CN103676781B (en) | A kind of error dynamic compensation system based on Siemens's 840D secondary interface | |
| CN107918357A (en) | A kind of numerical control machining center Spindle thermal error dynamic compensation method and system | |
| CN102176135A (en) | Thermal error measuring and integrating system for numerical control machine tool | |
| CN201233517Y (en) | Digital monitoring and controlling system for electric vortex power measuring machine | |
| CN105415092A (en) | Temperature compensation method for motorized spindle of numerical control machine tool | |
| CN104999342A (en) | Automatic measuring system and method for thermal error of numerical control machine tool in real cutting state | |
| Milfelner et al. | An overview of data acquisition system for cutting force measuring and optimization in milling | |
| CN102658503B (en) | Modal testing method of numerical control machine tool feed system based on built-in sensors | |
| CN102589736A (en) | Detection method and detection system for metal powder laser rapidly-molded temperature field | |
| CN202639856U (en) | Ram heat distortion temperature compensation device of floor type milling and boring machine | |
| CN105549533B (en) | Digit Control Machine Tool temperature field is monitored on-line and intelligent early-warning system | |
| CN102478820A (en) | Novel device for compensating positioning error of numerical control machine tool in real time | |
| CN108839975B (en) | Method for detecting performance of oil pump at bottom of oil storage tank | |
| CN205920385U (en) | Oil pump test bed control system | |
| CN202770534U (en) | Temperature field measuring device in laser processing process based on LabView | |
| CN111618659A (en) | Multi-parameter sensing cutting tool wear monitoring method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110810 Termination date: 20141215 |
|
| EXPY | Termination of patent right or utility model |