CN201993620U - Thermal-error measurement integrating system for numerically-controlled machine tool - Google Patents
Thermal-error measurement integrating system for numerically-controlled machine tool Download PDFInfo
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- CN201993620U CN201993620U CN2011200336870U CN201120033687U CN201993620U CN 201993620 U CN201993620 U CN 201993620U CN 2011200336870 U CN2011200336870 U CN 2011200336870U CN 201120033687 U CN201120033687 U CN 201120033687U CN 201993620 U CN201993620 U CN 201993620U
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Abstract
The utility model discloses a thermal-error measurement integrating system of a numerically-controlled machine tool. The thermal-error measurement integrating system is characterized in that the system comprises a temperature measuring unit, a thermal-displacement measuring unit, an industrial control computer and a display unit; and the industrial control computer performs real-time staged modeling by utilizing the thermal-error function according to the detected temperature data and the detected data of thermal-displacement deformation amount which are stored in real time and performs assessment on precision of the detected temperature data and the detected data of thermal-displacement deformation amount so as to judge the stability and the precision of a model. The thermal-error measurement integrating system has the advantages of simplicity, practicability, low cost and high precision and provides an experimental device to support the research and application of thermal-error compensation for the numerically-controlled machine tool.
Description
Technical field
The utility model relates to the numerical control machine heat error compensation technology, and the numerical control machining tool heat error of more specifically say so real-time multi-channel data acquisition of a kind of energy and processing is measured integrated system.
Background technology
Numerically-controlled machine is the foundation stone of the modernization of industry, at a high speed, precision and Ultraprecision Machining become modern mechanical make in most important component and developing direction.
In China, in all systems of present stage numerical control machining tool heat error measurement all is that temperature value in the lathe and thermal walking deflection are measured respectively, as application number is that ZL2009100502897, name are called in the Chinese patent instructions of " displacement measurement system and measuring method thereof " and disclose a kind of displacement measurement system, comprise microprocessor and the display device and the keyboard that are connected with microprocessor, the displacement measurement direction is selected and to the compensation of the displacement measurement errors offset of a plurality of interval measure values by this system's realization; Application number ZL200410006419, name are called that disclosed system comprises processor, more than one temperature measuring unit, display unit, input block and communications interface unit in the Chinese patent application instructions of " a kind of temperature measurement system and method ", are used to realize the digitized measurement temperature.The technical scheme of putting down in writing in these two patent documentations all is to realize independent temperature and displacement measurement to numerically-controlled machine, measure and to obtain heat displacement amount and temperature value function required the time but can't satisfy numerical control machining tool heat error, and do not possess the Real-time Error modeling function.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, providing a kind of simple and practical, low-cost, high-precision numerical control machining tool heat error to measure integrated system, for the support that gives test unit is studied and used to numerical control machine heat error compensation.
The utility model is that technical matters adopts following technical scheme:
The design feature that the utility model numerical control machining tool heat error is measured integrated system is to be made of jointly temperature measurement unit, thermal walking measuring unit, industrial computer and display unit;
Described temperature measurement unit is on each responsive to temperature point of numerically-controlled machine temperature sensor to be set, and the temperature detection signal of described temperature sensor output obtains the temperature detection data by data collecting card after the temperature transmitter signal amplifies; In described thermal walking measuring unit, the main shaft thermal walking deflection that inductive displacement transducer is used to measure numerically-controlled machine is set, described main shaft thermal walking deflection obtains the thermal walking deflection by data collecting card and detects data after the displacement transducer signal amplifies;
Described main shaft thermal walking deflection and temperature detection signal are set for sampling simultaneously, are kept in real time in same the industrial computer, and show in real time for temperature detection data and thermal walking deflection detection data by display unit;
Described industrial computer detects data at each the temperature detection data and the thermal walking deflection of real-time preservation, utilize hot error function to carry out the real time phase modeling and carry out each temperature detection data and the thermal walking deflection detects the accuracy assessment of data, the stability of judgment models and precision.
The design feature that the utility model numerical control machining tool heat error is measured integrated system also is:
Described temperature sensor is set to the magnetic adsorption type structure, is made of front end permanent magnetism head that can be used for adsorbing and the temperature sensor of being close to the setting of permanent magnetism head.
Be provided for fixing the integrated clamp of each inductance sensor, on described integrated clamp, each inductance sensor and can regulate by the adjusting screw(rod) on the anchor clamps as the distance between the main shaft of measurand.
Compared with the prior art, the utility model beneficial effect is embodied in:
1, the utility model provides a kind of numerical control machine heat error compensation equipment of special use, for the support that has given test unit is studied and used to numerical control machine heat error compensation.
2, the utility model is provided with real-time Presentation Function module, system is when carrying out temperature and thermal walking sampling, each Temperature numerical and shift value display box on the operation interface show measurement numerical value in real time, click the display box that needs inquiry, then this frame institute sampled data shows this temperature or thermal walking Changing Pattern in real time in coordinate curve figure mode, be convenient to the failure problems that testing crew is in time found to test progress and may be occurred, the carrying out smoothly of warranty test.
3, the utility model utilizes intrasystem mathematical modeling parameter evaluation unit to carry out accuracy assessment to interim modeling parameters, the stability of judgment models and precision, the loss and the stability problem of the modeling accuracy that solution sampled data output difference causes.This modeling and the self-assessment function is real-time, precision is high, stable, user's scientific research level is required low, be convenient to promote the use of; Can carry out as required that real time phase optimum temperature point is chosen and modeling and showing.
4, adopt the magnetic adsorption type temperature sensor in the utility model, be convenient to any locational arrangement on the numerically-controlled machine, simple and convenient, dependable performance.
5, employing inductance sensor price is low in the utility model, precision is high; Its integrated clamp, simple in structure, reliable operation, the distance that can regulate inductance sensor and measuring object in the practical application quickly and easily reaches the optimum measurement zone, has saved the measurement debug time greatly.
Description of drawings
Fig. 1 constitutes block scheme for the utility model system;
Fig. 2 is the utility model arrangement of temperature sensor synoptic diagram;
Fig. 3 is the utility model inductive displacement transducer scheme of installation;
Fig. 4 is the scheme of installation of the utility model integrated clamp on numerically-controlled machine.
Number in the figure: 1 permanent magnetism head; 2 temperature sensors; 3 back up pads; 4 orienting lugs; 5 limited blocks; 6 inductance sensors; 7 adjusting screw(rod)s; 8 main shafts; 9 worktable; 10 integrated clamps; 11 pressing plates.
Embodiment
Referring to Fig. 1, it is to be made of jointly temperature measurement unit, thermal walking measuring unit, industrial computer and display unit that the numerical control machining tool heat error in the present embodiment is measured integrated system;
Temperature measurement unit is on each responsive to temperature point of numerically-controlled machine temperature sensor to be set, and the temperature detection signal of temperature sensor output obtains the temperature detection data by data collecting card after the temperature transmitter signal amplifies; In the thermal walking measuring unit, the main shaft thermal walking deflection that inductive displacement transducer is used to measure numerically-controlled machine is set, main shaft thermal walking deflection obtains the thermal walking deflection by data collecting card and detects data after the displacement transducer signal amplifies;
Main shaft thermal walking deflection and temperature detection signal are set for sampling simultaneously, are kept in real time in same the industrial computer, and show in real time for temperature detection data and thermal walking deflection detection data by display unit;
Industrial computer detects data at each the temperature detection data and the thermal walking deflection of real-time preservation, utilize hot error function to carry out the real time phase modeling and carry out each temperature detection data and the thermal walking deflection detects the accuracy assessment of data, the stability of judgment models and precision.
Real-time Presentation Function in the system can be implemented in when carrying out temperature and thermal walking sampling, and show in real time and measure numerical value, so that testing crew is in time found the failure problems testing progress and may occur, the carrying out smoothly of warranty test.
Referring to Fig. 2, temperature sensor is set to the magnetic adsorption type structure, is made of front end permanent magnetism head 1 that can be used for adsorbing and the temperature sensor 2 of being close to 1 setting of permanent magnetism head, requires temperature sensor 2 to be close to magnetic head 1, in order to avoid heat conduction loss is serious.This version than traditional sticker formula temperature sensor is relatively installed accurately quick, simple to operate.Traditional sticker formula sensor often because the lathe surface and oil contaminant is heavy, comes off easily, and is difficult for being found.
Referring to Fig. 3, Fig. 4, be provided for fixing the integrated clamp 10 of each inductive displacement transducer 6, integrated clamp 10 is on back up pad 3, inductive displacement transducer 6 is by orienting lug 4 and limited block 5 common clampings, is arranged on adjusting screw(rod) 7 on the back up pad 3 can be regulated inductive displacement transducer 6 and measurand by limited block 5 distance.In the measurement, one body anchor clamps 10 are to be fixedly installed on worktable 9 by pressing plate 11.
Concrete operations:
1, the magnetic adsorption type temperature sensor is adsorbed on the responsive to temperature point position of numerically-controlled machine, normally near thermal source, and carries out signal Processing, export data collecting card (shown in Figure 1) to by temperature transmitter;
2, the integrated clamp 10 that will be set with inductive displacement transducer is placed on worktable 9 centers of numerically-controlled machine, with the numerical control machining center is example, regulate each inductive displacement transducer 6 and be in suitable distance with main shaft 8, it is inductive displacement transducer 6 is compressed to range ability by main shaft 8 centre position, determine the volume coordinate of main shaft 8, and measure coordinate points as thermal walking with this, simultaneously the inductive displacement transducer value is returned zero.Utilize pressing plate 11 that integrated clamp 10 is fixedly clamped on worktable 9, guarantee the locus relative fixed of inductive displacement transducer and main shaft.
3, main shaft of numerical control machine tool 8 is 1800 rev/mins to set the rotating speed rotation such as rotating speed is set; Every 3 minutes time, main shaft stall, and main axle moving to thermal walking measured the coordinate points place, industrial computer sample simultaneously each point temperature value and thermal walking error amount, and store.Can under the numerically-controlled machine duty, check each temperature spot and thermal walking change curve at any time between sampling period, determine the reliability of sampled data by display unit.
4, utilize hot error function, after a period of time is carried out in experiment, carry out the optimum temperature point in real time and choose and set up mathematical model, the display model parameter is carried out the parameter evaluation simultaneously, determine whether the parameter variation exceeds standard, if exceed standard, the stable poor of institute's sampled data is described, can consider to stop experiment, the mathematical model of being set up can realize the numerical control machine heat error compensation function by follow-up numerically-controlled machine embedded technology.
Claims (3)
1. a numerical control machining tool heat error is measured integrated system, it is characterized in that being made of jointly temperature measurement unit, thermal walking measuring unit, industrial computer and display unit;
Described temperature measurement unit is on each responsive to temperature point of numerically-controlled machine temperature sensor to be set, and the temperature detection signal of described temperature sensor output obtains the temperature detection data by data collecting card after the temperature transmitter signal amplifies; In described thermal walking measuring unit, the main shaft thermal walking deflection that inductive displacement transducer is used to measure numerically-controlled machine is set, described main shaft thermal walking deflection obtains the thermal walking deflection by data collecting card and detects data after the displacement transducer signal amplifies;
Described main shaft thermal walking deflection and temperature detection signal are set for sampling simultaneously, are kept in real time in same the industrial computer, and show in real time for temperature detection data and thermal walking deflection detection data by display unit;
Described industrial computer detects data at each the temperature detection data and the thermal walking deflection of real-time preservation, utilize hot error function to carry out the real time phase modeling and carry out each temperature detection data and the thermal walking deflection detects the accuracy assessment of data, the stability of judgment models and precision.
2. numerical control machining tool heat error according to claim 1 is measured integrated system, it is characterized in that described temperature sensor is set to the magnetic adsorption type structure, the permanent magnetism head (1) that can be used for adsorbing by front end and be close to the temperature sensor (2) that permanent magnetism head (1) is provided with and constitute.
3. numerical control machining tool heat error according to claim 1 is measured integrated system, it is characterized in that being provided for fixing the integrated clamp of each inductance sensor (6), on described integrated clamp, each inductance sensor (6) and can regulate by the adjusting screw(rod) on the anchor clamps (7) as the distance between the main shaft of measurand.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011200336870U CN201993620U (en) | 2011-01-30 | 2011-01-30 | Thermal-error measurement integrating system for numerically-controlled machine tool |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2011200336870U CN201993620U (en) | 2011-01-30 | 2011-01-30 | Thermal-error measurement integrating system for numerically-controlled machine tool |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759900A (en) * | 2012-06-29 | 2012-10-31 | 上海三一精机有限公司 | System and method for testing machine tool spindle thermal error |
| CN104756027A (en) * | 2012-09-25 | 2015-07-01 | 三菱重工业株式会社 | Control device for machining device, machining device, and correction method for machining data |
| CN105841664A (en) * | 2016-03-25 | 2016-08-10 | 合肥工业大学 | Small-sized phased array radar thermal deformation and temperature synchronous measuring system and measuring method thereof |
-
2011
- 2011-01-30 CN CN2011200336870U patent/CN201993620U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102759900A (en) * | 2012-06-29 | 2012-10-31 | 上海三一精机有限公司 | System and method for testing machine tool spindle thermal error |
| CN102759900B (en) * | 2012-06-29 | 2014-11-05 | 上海三一精机有限公司 | System and method for testing machine tool spindle thermal error |
| CN104756027A (en) * | 2012-09-25 | 2015-07-01 | 三菱重工业株式会社 | Control device for machining device, machining device, and correction method for machining data |
| US9897993B2 (en) | 2012-09-25 | 2018-02-20 | Mitsubishi Heavy Industries, Ltd. | Control device for machining apparatus, machining apparatus, and correction method of machining data |
| CN104756027B (en) * | 2012-09-25 | 2018-09-11 | 三菱重工业株式会社 | The bearing calibration of the control device, processing unit (plant) and process data of processing unit (plant) |
| CN105841664A (en) * | 2016-03-25 | 2016-08-10 | 合肥工业大学 | Small-sized phased array radar thermal deformation and temperature synchronous measuring system and measuring method thereof |
| CN105841664B (en) * | 2016-03-25 | 2018-07-13 | 合肥工业大学 | Small-sized phased-array radar thermal deformation and temperature synchronized measurement system and its measurement method |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110928 Termination date: 20140130 |