CN204711699U - Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device - Google Patents
Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device Download PDFInfo
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- CN204711699U CN204711699U CN201420696986.6U CN201420696986U CN204711699U CN 204711699 U CN204711699 U CN 204711699U CN 201420696986 U CN201420696986 U CN 201420696986U CN 204711699 U CN204711699 U CN 204711699U
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Abstract
The utility model discloses a kind of Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device, mainly solve existing Digit Control Machine Tool point of a knife dynamic characteristic detection perform index not comprehensively, not precisely and instrument and cut the problems such as test specimen testing cost is higher.This Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device comprises bearing, connecting plate and L shape and supports wallboard, passing hole is provided with in vertically arranged displacement transducer between two at holder top through manner, simultaneously by the temperature data acquisition at each main heating source place of integrated lathe, realize tool setting cusp pose real time information in spindle swing or rotary movement to obtain, the data message high-speed transfer merged by data acquisition unit automatic acquisition enters computer-implemented record and analysis, completes precision correlation computations and offset data generation.The utility model smart structural design, point of a knife characteristic test complete function, highly versatile, greatly reduces numerical control (NC) Machining Accuracy testing cost, has good practical and popularizing value.
Description
Technical field
The utility model belongs to numerical control machine tool technique field, and what relate to is the detection of lathe point of a knife dynamic characteristic synthesis precision, specifically, relates to a kind of Digit Control Machine Tool point of a knife dynamic characteristic accuracy synthesis checkout gear and method thereof.
Background technology
Digit Control Machine Tool is in the process of processing, and various error source all can be passed to tool nose point by various dynamo-electric link, makes point of a knife point offset theoretical position, thus produces actual mismachining tolerance.Along with Numeric Control Technology is towards the future development of high speed, high accuracy and multiaxis, the detection demand of Thermal Deformation of NC Machine Tool error, processing dynamic characteristic error is appeared suddenly day by day.Digit Control Machine Tool is in the process of processing, at various thermal source: as bearing heating, the motor feels hot, ball screw and nut generates heat, guide rail generates heat with under the acting in conjunction of the Environmental Heat Source such as sunshine, underground heat, air flowing, can cause the parts on lathe that expanding with heat and contract with cold in various degree occurs, under the superposition transmission effect of these thermal deformations, cause the positional precision at lathe point of a knife place to be destroyed, the error caused thus is called Thermal Error.In general, the mismachining tolerance that Digit Control Machine Tool causes due to thermal deformation in process accounts for 40 ~ 70% of the whole error of lathe, although more to the research of thermal deformation of machine tool error both at home and abroad, the domestic numerical control machine heat characteristic error detection means that there is no maturation at present.
For four axles or 5-shaft linkage numerical control lathe, due to introduce 1 or 2 swing or rotating shaft cause introducing more point of a knife error source, in addition Multi-axis Machining technology itself is also comparatively complicated, creates many difficulties in the accuracy detection causing user to grasp in use and plant maintenance process.Lathe four axis processing precision does not have ripe detection method at present.The detection of lathe five-axle linkage machining accuracy generally takes the method for NAS979 circular cone test specimen or S shape test specimen machining to implement inspection, not only material for test and cutter consumption large, and affect larger by programming levels, cutter, technological parameter etc., also need to dismantle test specimen and move finally to detect to three coordinate machine, loss of significance link is more, testing cost is quite high, the more difficult dynamic machining precision directly reflected in linkage process.
In addition, for the detection of point of a knife kinematic error, the direct frame table of tradition amesdial is measured, cause frame meter accuracy not only higher to operating technology level requirement, and dependence visually observes meter pointer skew and hand-kept and calculating completely, cannot realize the partial data process record of continuous each transient state point of a knife pose and temperature information, and link of makeing mistakes is more, more cannot realize automation accurate analysis and high precision computation; Modern accuracy detection instrument such as the limitation in the interlock checking of dynamic accuracy of multi-shaft interlocked lathe such as laser interferometer, laser tracker progressively manifests, such as laser interferometer is applicable to linear axis accuracy detection and directly cannot meets big swing angle scope measuring, the laser tracker adopting dynamic then separate unit to reach millions of first price then cost, convenience and ease for use and etc. in also cannot be accepted by vast lathe user and approve.More scientific method that is reasonable, high performance-price ratio is adopted to realize Digit Control Machine Tool precision measurement and detection, become Digit Control Machine Tool installation and debugging personnel, particularly five-axis machine tool user to boost productivity and machine tool utilization rate, improve product processing quality, realize the key restriction factors that Digit Control Machine Tool equipment optimization runs.
Utility model content
The purpose of this utility model is to overcome above-mentioned defect, provides a kind of reasonable in design, synthetically can realize dynamic characteristic relevant parameter automatic detection device such as NC Machining Process point of a knife point kinetic characteristic and thermal deformation etc. and method thereof.
In order to realize the purpose of this utility model, the technical solution adopted in the utility model is as follows:
Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device, comprise the bearing that can be arranged on numerically controlled machine, by being arranged on the connecting plate of holder top, support that wallboard forms black box structure with L shape, be provided with in vertically arranged displacement transducer between two at support plate and connecting plate passing hole mode, by the detection of the bulb surface relative distance on displacement transducer and plug, realize in spindle swing motion process the Real-time Obtaining of point of a knife dynamic bit appearance information, by data acquisition unit, above-mentioned point of a knife Multi-sensor Fusion high speed information is sent input computer automatically record and analyze, calculate every precision index and the correction-compensation parameter of Digit Control Machine Tool point of a knife point dynamic characteristic fast, and graphic software platform and the printing test report of testing and analysis data can be realized.
Described connecting plate is parallel to the horizontal end face of holder top and arranges fixing, and connecting plate inside is provided with tapped through hole so that displacement transducer carries out penetration type installation along vertical direction.
Described L shape supports the rectangular 90 ° of layouts of two walls of wallboard, L shape supports that two walls of wallboard are all arranged perpendicular to the horizontal end face of holder top, and supports that two of wallboard wall inside are provided with tapped through hole so that displacement transducer carries out penetration type installation in the horizontal direction with L shape.
Described sets of temperature sensors comprises many cover thermistor (temperature) sensors and forms, and attaches mode flexible arrangement near each main heating source of Digit Control Machine Tool by magnet or adhesive plaster.
Described computer comprises for rotary cutter central point accuracy test module, main shaft radial tilt test module, spindle rotation accuracy test module, main shaft thermal deformation test module, be heated for swinging axle offset data generation module, point of a knife point thermal migration correction data generation module occurs, and the DBM be made up of dynamic accuracy warning module and historical data tracking module.
On the basis of above-mentioned structure based, the utility model additionally provides its implementation, comprises the following steps:
(1) each running parameter of Digit Control Machine Tool is set, platen sets up Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device, displacement transducer, sets of temperature sensors, amplifier, data acquisition unit and computer are initialized, completes the setting value of checkout gear running parameter;
(2) require to open every test function module in computer according to Digit Control Machine Tool point of a knife dynamic characteristic indices, realize measuring the point of a knife Dynamic Signal under Digit Control Machine Tool relevant operational state by displacement transducer or temperature sensor, and the Dynamic Signal of measurement is transferred to computer by data acquisition unit, complete Digit Control Machine Tool cutter and examine Dynamic Data Acquiring process;
(3) realized this index test data analysis process by computer according to test request, and the measured value of lathe point of a knife dynamic characteristic and setting value or historical data are contrasted;
(4) generate and carry out the correction of parameter adjustment or offset data and lathe point of a knife dynamic characteristic indices analysis report for digital control system.
Compared with prior art, the beneficial effects of the utility model are:
(1) the utility model adopts on numerically controlled machine, installs the detection that integrated sensor bearing mode realizes carrying out main shaft core rod ball head knife cusp pose dynamic error and Thermal Error, not only structure is simple compared with buying general laser interferometer or laser tracker etc. costly instrument, maintenanceability is better, and installation cost is comparatively cheap, test technology is flexible, versatility is comparatively strong, greatly reduces Installing machine tool debugging and follow-up maintenance cost;
(2) the utility model adopts the integrated automated testing method of multiclass sensor not only mode more flexible and convenient compared with tradition amesdial direct frame table metering system, particularly bearing top offset sensor arrangement greatly reduces the difficulty of erection amesdial, shorten non-cutting time, partial data process record and the high precision computation of continuous each transient state point of a knife pose and temperature information can also be achieved, substantially increase measurement efficiency and the precision of lathe dynamic accuracy;
(3) the utility model is to can round Realization Digit Control Machine Tool point of a knife dynamic characteristic parameter index measurement, the comprehensive function such as digital control system compensating approach Value Data generates, precision early warning and historical data are followed the tracks of and reviewed, there is parameter complete, practical function, cost performance is high, has in Digit Control Machine Tool application application prospect widely;
Accompanying drawing explanation
Fig. 1 is frame for movement front view of the present utility model.
Fig. 2 is frame for movement top view of the present utility model.
Fig. 3 is frame for movement side view of the present utility model.
Fig. 4 is the theory diagram of point of a knife dynamical property test system in the utility model.
Fig. 5 is that NC Machine Tools Coordinate system forms schematic diagram.
Fig. 6 is detection method implementation flow chart of the present utility model.
Fig. 7 is the operating diagram that the utility model is applied in main shaft thermal state characteristic test.
Fig. 8 is the operating diagram that the utility model is applied in spindle inclination test.
Fig. 9 is the operating diagram that the utility model is applied in spindle rotation accuracy test.
Figure 10 is the operating diagram that the utility model is applied in the test of point of a knife point C axle dynamic accuracy.
Figure 11 is the operating diagram that the utility model is applied in the test of point of a knife point B axle dynamic accuracy.
Figure 12 is the operating diagram that the utility model is applied in the test of point of a knife point A axle dynamic accuracy.
Wherein, the title corresponding to Reference numeral: 1-bearing, 2-connecting plate, 3-L shape supports wallboard, 4-displacement transducer, 5-displacement transducer, 6-displacement transducer, 7-thermistor (temperature) sensor, 8-computer, 9-displacement signal amplifier, 10-terminal board, 11-temperature signal amplifier, 12-data acquisition unit, 13-bulb plug, 14-standard core rods.
Detailed description of the invention
Below in conjunction with accompanying drawing, the utility model is described in further detail.Embodiment of the present utility model includes but not limited to the following example.
As shown in Figure 1, Figure 2, Figure 3 shows, for a preferred embodiment of the utility model Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device structure master depending on, overlook and side view.It mainly comprises the bearing 1 being arranged on and being arranged on work of numerical control machine platform comprising on numerically controlled machine, be arranged on the connecting plate 2 of holder top, connecting plate 2 inside is provided with tapped through hole so that displacement transducer 6 carries out penetration type installation along vertical direction, the L shape be arranged on connecting plate supports wallboard 3, L shape supports that two walls of wallboard 3 are all arranged perpendicular to bearing 1 top water planar end surface, and support two of wallboard wall inside to be provided with tapped through hole so that displacement transducer 4 and displacement transducer 5 carry out penetration type installation with L shape, realize detecting in real time at the deviation data of all directions position and attitude in various motion state and point of a knife thermal expansion state standard core rods bulb.
As shown in Figure 4, present embodiments provide hardware composition structure and the Cleaning Principle of Digit Control Machine Tool point of a knife dynamical property test system, the pose real time information of bulb plug is detected by each displacement transducer, detected the state of temperature information of each main heating position of lathe by sets of temperature sensors 7, gather above-mentioned bulb positional information and temperature information by data acquisition unit 12 and send at a high speed these data messages and enter computer 8 and carry out automatic computational analysis and display and printed report.
As shown in Figure 5, for NC Machine Tools Coordinate system forms schematic diagram.The mainly theoretical reference benchmark of positioning numerical control machine tool cusp pose, comprises X/Y/Z/A/B/C six-freedom degree benchmark.
As shown in Figure 6, be detection method implementation flow chart of the present utility model.Mainly first set each running parameter of Digit Control Machine Tool, platen sets up Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device, initializing set is carried out to displacement transducer 4, displacement transducer 5, displacement transducer 6, thermistor (temperature) sensor group 7, each class A amplifier A, data acquisition unit 12 and computer.Then, require to open every test function module in computer according to Digit Control Machine Tool point of a knife dynamic characteristic indices, realize measuring the point of a knife Dynamic Signal under Digit Control Machine Tool relevant operational state by above-mentioned each sensor, and the Dynamic Signal of measurement is transferred to computer 8 by data acquisition unit 12, complete the dynamic data acquisition process of Digit Control Machine Tool point of a knife point.Then, realized carrying out in machine analyzing and processing to these index test data by computer according to test request, and the measured value of lathe point of a knife dynamic characteristic and setting value or historical data are contrasted, to carry out abnormal judgement to Digit Control Machine Tool point of a knife dynamic accuracy, if judged result is no, then Digit Control Machine Tool keeps original precision state or continues test, if the determination result is YES, then enters next step data report and generates.Finally, generate corresponding correction or offset data and carry out parameter adjustment for digital control system and obtain lathe point of a knife dynamic characteristic indices analysis report, for Installation and adjustment maintenance provides reference data, finally realize improvement to numerical control (NC) Machining Accuracy and lifting.
As shown in Figure 7, for the utility model is applied in the operating diagram of main shaft thermal state characteristic test.Mainly by unloaded or after loading timing operation, bulb plug to be arranged on main shaft by tool changing and the detection adopting programming automatic execution method to move quickly into the position of tool tip after pre-setting to realize Thermal Error.
As shown in Figure 8, for the utility model is applied in the operating diagram of spindle inclination test.Mainly by standard core rods to be arranged on main shaft and to move to the position of tool tip after pre-setting, start Z reference axis and pump and gather main shaft coherent signal, realize the detection to spindle inclination.
As shown in Figure 9, for the utility model is applied in the operating diagram of spindle rotation accuracy test.Mainly by standard core rods to be arranged on main shaft and to move to the position of tool tip after pre-setting, start main shaft and do the rotary motion of rated speed n and gather main shaft coherent signal, realize the detection to spindle rotation accuracy.
As shown in Figure 10, for the utility model is applied in the operating diagram of point of a knife point C axle dynamic accuracy test.Mainly by bulb plug to be arranged on main shaft and to move to the position of tool tip after pre-setting, be fixed angle rotary to the C axle with C coordinate swinging head to run, start the detection that rotary cutter central point control model realizes the dynamic point of a knife kinetic characteristic of C axle total travel simultaneously.
As shown in figure 11, for the utility model is applied in the operating diagram of point of a knife point B axle dynamic accuracy test.Mainly by bulb plug to be arranged on main shaft and to move to the position of tool tip after pre-setting (swinging or revolution coordinate then can omit this step as surveyed any one on same lathe), be fixed angle rotary to the B axle with B coordinate swinging head to run, start the detection that rotary cutter central point control model realizes the dynamic point of a knife kinetic characteristic of B axle total travel simultaneously.
As shown in figure 12, for the utility model is applied in the operating diagram of point of a knife point A axle dynamic accuracy test.Mainly by bulb plug to be arranged on main shaft and to move to the position of tool tip after pre-setting (swinging or revolution coordinate then can omit this step as surveyed any one on same lathe), be fixed angle rotary to the A axle with A coordinate swinging head to run, start the detection that rotary cutter central point control model realizes A axle total travel point of a knife kinetic characteristic simultaneously.
According to above-described embodiment, just the utility model can be realized well.What deserves to be explained is; under prerequisite based on above-mentioned design principle; for solving same technical problem; even if some making on architecture basics disclosed in the utility model are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the utility model, therefore it also should in protection domain of the present utility model.
Claims (5)
1. Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device, it is characterized in that, comprise the bearing (1) being arranged on work of numerical control machine platform, be arranged on the connecting plate (2) of holder top, the L shape be arranged on connecting plate supports wallboard (3), be arranged on the displacement transducer (4) on support wallboard and displacement transducer (5), be arranged on the displacement transducer ((6) on connecting plate, the point of a knife pose real time information of bulb plug is detected by displacement transducer, the state of temperature information of each main heating position of lathe is detected by sets of temperature sensors (7), obtain the Multi-sensor Fusion signal of above-mentioned bulb point of a knife pose by data acquisition unit (12) and send at a high speed data and enter computer (8) and implement computational analysis.
2. Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device according to claim 1, it is characterized in that, described connecting plate (2) is parallel to bearing (1) top water planar end surface and arranges fixing, and connecting plate (2) inside is provided with tapped through hole so that displacement transducer (6) carries out penetration type installation along vertical direction.
3. Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device according to claim 1, it is characterized in that, described L shape supports the rectangular 90 ° of layouts of two walls of wallboard (3), L shape supports that two walls of wallboard (3) are all arranged perpendicular to bearing (1) top water planar end surface, and supports two wall inside of wallboard (3) to be provided with tapped through hole so that displacement transducer (4) and displacement transducer (5) carry out the installation of horizontal direction penetration type with L shape.
4. Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device according to claim 1, is characterized in that, described sets of temperature sensors (7) forms by overlapping thermistor (temperature) sensor more.
5. Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device according to claim 1, it is characterized in that, described computer (8) comprises for rotary cutter central point accuracy test module, main shaft radial tilt test module, spindle rotation accuracy test module, main shaft thermal deformation test module, be heated for swinging axle offset data generation module, point of a knife point thermal migration correction data generation module occurs, and the DBM be made up of dynamic accuracy warning module and historical data tracking module.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201420696986.6U CN204711699U (en) | 2014-11-20 | 2014-11-20 | Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device |
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| CN201420696986.6U CN204711699U (en) | 2014-11-20 | 2014-11-20 | Digit Control Machine Tool point of a knife dynamic characteristic accuracy detecting device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269404A (en) * | 2014-11-20 | 2016-01-27 | 电子科技大学 | Detection device for knife point dynamic characteristics of numerical control machine tool and method of detection device |
| CN105583693A (en) * | 2016-03-15 | 2016-05-18 | 常州信息职业技术学院 | Relative flexibility testing method of vertical machining center |
| RU2634529C1 (en) * | 2016-05-24 | 2017-10-31 | Борис Михайлович Дмитриев | Method for testing metal-cutting machines by accuracy parameters under action of thermal disturbances |
| CN111735365A (en) * | 2020-06-29 | 2020-10-02 | 深圳市拓智者科技有限公司 | Checking device and checking method for RTCP function of five-axis machine tool |
| CN112828587A (en) * | 2020-12-30 | 2021-05-25 | 广汽本田汽车有限公司 | Installation system of cabin wiring harness relay |
| CN114185930A (en) * | 2021-10-27 | 2022-03-15 | 松德刀具（长兴）科技有限公司 | Boring cutter management system with data memory function |
-
2014
- 2014-11-20 CN CN201420696986.6U patent/CN204711699U/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105269404A (en) * | 2014-11-20 | 2016-01-27 | 电子科技大学 | Detection device for knife point dynamic characteristics of numerical control machine tool and method of detection device |
| CN105269404B (en) * | 2014-11-20 | 2018-11-23 | 电子科技大学 | Numerically-controlled machine tool point of a knife dynamic characteristic accuracy detecting device and its method |
| CN105583693A (en) * | 2016-03-15 | 2016-05-18 | 常州信息职业技术学院 | Relative flexibility testing method of vertical machining center |
| CN105583693B (en) * | 2016-03-15 | 2017-09-15 | 常州信息职业技术学院 | The relative Testing Technique Based Compliance of Specimens of vertical machining centre |
| RU2634529C1 (en) * | 2016-05-24 | 2017-10-31 | Борис Михайлович Дмитриев | Method for testing metal-cutting machines by accuracy parameters under action of thermal disturbances |
| CN111735365A (en) * | 2020-06-29 | 2020-10-02 | 深圳市拓智者科技有限公司 | Checking device and checking method for RTCP function of five-axis machine tool |
| CN112828587A (en) * | 2020-12-30 | 2021-05-25 | 广汽本田汽车有限公司 | Installation system of cabin wiring harness relay |
| CN114185930A (en) * | 2021-10-27 | 2022-03-15 | 松德刀具（长兴）科技有限公司 | Boring cutter management system with data memory function |
| CN114185930B (en) * | 2021-10-27 | 2023-12-29 | 松德刀具（长兴）科技有限公司 | Boring cutter management system with data memory |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151021 Termination date: 20171120 |