CN204757949U - Measurement device for main shaft developments gyration error is equipped in complete set gyration - Google Patents
Measurement device for main shaft developments gyration error is equipped in complete set gyration Download PDFInfo
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- CN204757949U CN204757949U CN201520365284.4U CN201520365284U CN204757949U CN 204757949 U CN204757949 U CN 204757949U CN 201520365284 U CN201520365284 U CN 201520365284U CN 204757949 U CN204757949 U CN 204757949U
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- master bar
- main shaft
- reference column
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Abstract
The utility model discloses a measurement device for main shaft developments gyration error is equipped in complete set gyration connects the reference column and installs between master bar and main shaft, and four displacement sensor's measuring junction is placed the circumference of master bar respectively in and outer and be used for the displacement of testing standards stick, displacement sensor's signal output part in proper order with data collection station, signal conditioning ware and upper computer connection, be equipped with the mark of two symmetries on the connection reference column terminal surface of interconnection and the master bar terminal surface respectively. The utility model discloses an increase a reference column of being connected that has accurate mark and measure the main shaft developments gyration error that reversal process error separation technological improvement is used for the complete set gyration to equip between master bar and main shaft, compare with current many gauge heads method error stripping technique, the separation of measuring device error is simple, the operand is little, and measuring error is controllable moreover, does not have the harmonic and restraines the problem, is showing and is improving measurement accuracy, is suitable for popularization and application.
Description
Technical field
The utility model relates to the measurement mechanism of the complete revolution equipment such as a kind of precision machine tool or precision centrifuge main shaft dynamic rotation error, belongs to exact instrument manufacture and field of measuring technique.
Background technology
As the core of the outfits such as precision machine tool, precise rotating platform and precision centrifuge, the turn error of main shaft is measured and is affected the machining precision of precision parts and the calibration precision of inertia type instrument to a great extent.Especially at precision optical machinery manufacture field, the many factors such as thermal deformation of machine tool, structural failure, spindle rotation error, ambient vibration are all the factors affecting mechanical component mismachining tolerance.Machining precision along with lathe reaches sub-micron even nanometer scale, and the part's machining errors that spindle rotation error causes will become the major influence factors of restriction precision optical machinery machining precision.Correlation test shows that the part deviation from circular from that precision turning is processed about has 30% ~ 70% to be caused by the spindle rotation error of lathe, and the precision of lathe is higher, and the ratio of its spindle rotation error shared by various mismachining tolerance source is larger.
When current spindle rotation error measuring principle and technological means can not fundamentally change, turn error is measured will using main shaft outline or additional standard ball as measurement datum, so just inevitably be mixed into the deviation from circular from of main shaft outline or the setting-up eccentricity equal error source of additional standard ball, the key that therefore spindle rotation error is measured is error separating technology.
At present, spindle rotation error and roundness fault separating method mainly contain reversal process, multistep processes and many gauge heads method.Although correlative study shows that three kinds of methods respectively have relative merits, as long as but appropriate design parameter, three kinds of methods can reach nanometer measurement precision, but Project Realization difficulty is very big, and so high measuring accuracy is mainly separated with turn error for the deviation from circular from of component of machine at present.For the dynamic rotation error online measuring of the outfit such as lathe or precision centrifuge, its importance is also important: for precision machine tool, its dynamic rotation error more can reflect the machining precision under real working condition, by the online precision measurement of turn error, can predict that lathe is resonable and think the lower minimum shape error that can reach of processing conditions and roughness, also can be used for the compensatory control of machine finish, realize the processing of higher extra fine grade; For high precision precision centrifuge, the main shaft dynamic rotation error measurement under its load behavior will export the precision of acceleration in order to raising as compensation rate.Current multipoint method can realize the main shaft dynamic rotation error On-line sampling system of outfit, but measuring principle and measuring system relative complex; Reversal process and multistep processes are mainly used in detecting the deviation from circular from of mechanical component, are difficult to measure in real time the main shaft dynamic rotation error of complete revolution equipment.
The known main shaft gyration kinematic error measuring method based on multipoint method error separating technology mainly contains based on frequency-domain and time-domain two kinds at present, and these methods all can realize the main shaft dynamic rotation error online measuring of the outfits such as precision machine tool.Pertinent literature can with reference to Chinese patent: a kind of modified three point method turn error, deviation from circular from computing method, number of patent application: 201310285596.X; A kind of radial rotation accuracy of main shaft on-Line Monitor Device, number of patent application: 201110343296.3; Etc..Multipoint method error separate patent is more, does not enumerate at this, and the shortcoming being summed up multipoint method is that measuring principle is complicated, and the sensitivity difference between sensor alignment error and multiple sensor also will introduce larger measuring error.Reversal process and multistep mensuration aspect, current known technology or the roundness error measurement applied mainly for component of machine.China patent: single-transposition roundness fault separating method, number of patent application: 200510002287.2, by improving the deviation from circular from high-acruracy survey achieving workpiece to multistep processes; A kind of high precision circularity detection method combined based on reverse and multisensor method, number of patent application: 201110049087.8, by making the rotating disk that two have same shape error, and by means of roundness measuring equipment, achieve the deviation from circular from high-acruracy survey of workpiece based on reverse method and many sides head method; The measurement mechanism be separated based on the workpiece rotary table error of double testing head scan-data splicing and method, number of patent application: 201110414841.3, adopt double testing head scan-data joining method, effective separation removes the kinematic error of workpiece rotary table to the impact of measurement result, improves roundness error separation precision.Foreign literature has by strict control survey condition, to the method that reversal process improves, by by means of hi-Fix turntable, achieves the nanoscale roundness error measurement precision of workpiece.Although the advantage of above reversal process, improvement reversal process, multistep processes etc. is that measurement is simple, precision is high, but by being used for the roundness error measurement of workpiece by means of hi-Fix turntable, be difficult to the main shaft dynamic rotation error measure being directly used in the complete revolution equipments such as lathe.
Utility model content
The purpose of this utility model is just to provide a kind of complete revolution based on improving reversal process to equip the measurement mechanism of main shaft dynamic rotation error to solve the problem.
The utility model is achieved through the following technical solutions above-mentioned purpose:
A kind of measurement mechanism of complete revolution equipment main shaft dynamic rotation error, comprise grating encoder, master bar, displacement transducer, data acquisition unit, signal conditioner and host computer, described master bar is used for being connected and synchronous rotary with described main shaft, described grating encoder is for detecting the rotating speed of described main shaft and exporting Z pulse signal, institute's displacement sensors is for detecting the displacement of described master bar, the signal output part of institute's displacement sensors is connected with the signal input part of described data acquisition unit respectively with the Z pulse signal output end of described grating encoder, the signal output part of described data acquisition unit is connected with the signal input part of described signal conditioner, the signal output part of described signal conditioner is connected with the signal input part of described host computer, described measurement mechanism also comprises the connection reference column be installed between described master bar and described main shaft, the first end of described connection reference column is connected with described main shaft, second end of described connection reference column is connected with the first end of described master bar, second end end face of described connection reference column is plane and on its circumference or virtual circumference, is provided with two with the center line of described connection reference column for the axisymmetric connection reference column mark of symmetry, the first end end face of described master bar is plane and on its circumference or virtual circumference, is provided with two with the center line of described master bar for the axisymmetric master bar mark of symmetry, the measuring junction of four institute's displacement sensors is uniformly distributed in the virtual circumference outside described master bar circumference.
As preferably, the width of described connection reference column mark and described master bar mark is all less than 1mm, and described connection reference column mark and corresponding described master bar are marked at and are mutually not less than 0.5mm to its overlapping widths on time.
For the ease of processing, described connection reference column mark and described master bar mark are tick marks.
The beneficial effects of the utility model are:
Reversal process error separating technology is improved by increasing a connection locating platform with precision marks between master bar and main shaft the main shaft dynamic rotation error measure being used for complete revolution equipment by the utility model, compared with existing many gauge heads Error Separation technology, measurement mechanism error separate described in the utility model is simple, operand is little, and measuring error is controlled, there is not harmonics restraint problem, significantly improve measuring accuracy, be suitable for applying.
Accompanying drawing explanation
Fig. 1 is the structural representation of the measurement mechanism of complete revolution equipment main shaft dynamic rotation error described in the utility model;
Fig. 2 is the structural representation that displacement transducer described in the utility model distributes around master bar;
Fig. 3 is the second end end face structure schematic diagram of connection reference column described in the utility model;
Fig. 4 is the first end end face structure schematic diagram of master bar described in the utility model;
Fig. 5 is one of the second end end face of connection reference column described in the utility model and the first end end face aligned relationship schematic diagram of described master bar, and the master bar diameter in figure is greater than Fig. 1 relative to the ratio connecting reference column diameter;
Fig. 6 is that the master bar diameter in the second end end face of connection reference column described in the utility model and the first end end face aligned relationship schematic diagram two, figure of described master bar is greater than Fig. 1 relative to the ratio connecting reference column diameter.
Embodiment
Below in conjunction with accompanying drawing, the utility model is described in further detail:
As shown in Figure 1, the measurement mechanism of complete revolution equipment main shaft dynamic rotation error described in the utility model comprises grating encoder 13, connect reference column 2, master bar 3, displacement transducer 4, data acquisition unit 6, signal conditioner 7 and host computer 8, grating encoder 13 is for detecting the rotating speed of main shaft 1 and exporting Z pulse signal, connecting reference column 2 is installed between master bar 3 and main shaft 1, the first end (upper end namely in Fig. 1) connecting reference column 2 is connected with main shaft 1, connect second end (lower end namely in Fig. 1) of reference column 2 to be connected with the first end (upper end namely in Fig. 1) of master bar 3, displacement transducer 4 is for the displacement of examination criteria rod 3, the signal output part of displacement transducer 4 is connected respectively by the signal input part of signal cable 5 with data acquisition unit 6 with the Z pulse signal output end of grating encoder 13, the signal output part of data acquisition unit 6 is connected with the signal input part of signal conditioner 7, the signal output part of signal conditioner 7 is connected with the signal input part of host computer 8, as shown in Figure 2, Figure 3 and Figure 4, the the second end end face connecting reference column 2 is plane and is circumferentially provided with two to connect the center line of reference column 2 for symmetry axisymmetric connection reference column scale mark at it, namely 0 ° of connection reference column scale mark 9 is connected reference column scale mark 10 with 180 °, the first end end face of master bar 3 is plane and is circumferentially provided with two with the center line of master bar 3 for the axisymmetric master bar scale mark of symmetry at it, i.e. 0 ° of master bar scale mark 11 and 180 ° of master bar scale marks 12, the measuring junction of four displacement transducers 4 is uniformly distributed in the virtual circumference outside master bar 3 circumference.In the virtual circumference that above-mentioned connection reference column scale mark and master bar scale mark can also be located at the second end end face being connected reference column 2 respectively and master bar 3 first end end face virtual circumference on, specifically determine according to the diameter difference connected between reference column 2 and master bar 3, so that the spacing between the connection reference column scale mark of correspondence and master bar scale mark is enough little or direct part is overlapping, be convenient to be aligned to principle, specifically, the width connecting reference column mark and master bar mark is all less than 1mm, and connect reference column mark and corresponding master bar and be marked at and mutually 0.5mm be not less than to its overlapping widths punctual.Explanation, Fig. 3, Fig. 4, Fig. 5 are all greater than Fig. 1 with the diameter of the master bar 3 in Fig. 6 relative to the ratio of the diameter being connected reference column 2, for the ease of the alignment relation between display connection reference column scale mark and master bar scale mark, in practical application, if the diameter of master bar 3 is much smaller than the diameter connecting reference column 2, then can be reduced the spacing between corresponding connection reference column scale mark and master bar scale mark by the mode arranging connection reference column scale mark in the virtual circumference of the second end end face connecting reference column 2, reach the object being convenient to align.
Reversal process error separating technology improves be used for completely turning round the main shaft dynamic rotation error measure of equipping by increasing a connection reference column 2 with precision marks between master bar 3 and main shaft 1 by the utility model, compared with existing many gauge heads Error Separation technology, the utility model error separate is simple, operand is little, and measuring error is controlled, there is not harmonics restraint problem, significantly improve measuring accuracy, be suitable for applying.
Above-described embodiment is preferred embodiment of the present utility model; it is not the restriction to technical solutions of the utility model; as long as without the technical scheme that creative work can realize on the basis of above-described embodiment, all should be considered as falling within the scope of the rights protection of the utility model patent.
Claims (3)
1. the measurement mechanism of a complete revolution equipment main shaft dynamic rotation error, comprise grating encoder, master bar, displacement transducer, data acquisition unit, signal conditioner and host computer, described master bar is used for being connected and synchronous rotary with described main shaft, described grating encoder is for detecting the rotating speed of described main shaft and exporting Z pulse signal, institute's displacement sensors is for detecting the displacement of described master bar, the signal output part of institute's displacement sensors is connected with the signal input part of described data acquisition unit respectively with the Z pulse signal output end of described grating encoder, the signal output part of described data acquisition unit is connected with the signal input part of described signal conditioner, the signal output part of described signal conditioner is connected with the signal input part of described host computer, it is characterized in that: described measurement mechanism also comprises the connection reference column be installed between described master bar and described main shaft, the first end of described connection reference column is connected with described main shaft, second end of described connection reference column is connected with the first end of described master bar, second end end face of described connection reference column is plane and on its circumference or virtual circumference, is provided with two with the center line of described connection reference column for the axisymmetric connection reference column mark of symmetry, the first end end face of described master bar is plane and on its circumference or virtual circumference, is provided with two with the center line of described master bar for the axisymmetric master bar mark of symmetry, the measuring junction of four institute's displacement sensors is uniformly distributed in the virtual circumference outside described master bar circumference.
2. the measurement mechanism of complete revolution equipment main shaft dynamic rotation error according to claim 1, it is characterized in that: the width of described connection reference column mark and described master bar mark is all less than 1mm, and described connection reference column mark and corresponding described master bar are marked at and are mutually not less than 0.5mm to its overlapping widths on time.
3. the measurement mechanism of complete revolution equipment main shaft dynamic rotation error according to claim 1 and 2, is characterized in that: described connection reference column mark and described master bar mark are tick marks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520365284.4U CN204757949U (en) | 2015-05-29 | 2015-05-29 | Measurement device for main shaft developments gyration error is equipped in complete set gyration |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201520365284.4U CN204757949U (en) | 2015-05-29 | 2015-05-29 | Measurement device for main shaft developments gyration error is equipped in complete set gyration |
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| CN204757949U true CN204757949U (en) | 2015-11-11 |
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| CN201520365284.4U Withdrawn - After Issue CN204757949U (en) | 2015-05-29 | 2015-05-29 | Measurement device for main shaft developments gyration error is equipped in complete set gyration |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043317A (en) * | 2015-05-29 | 2015-11-11 | 中国工程物理研究院总体工程研究所 | Device and method for measuring dynamic revolution error of main shaft of set of revolution equipment |
| CN108731595A (en) * | 2017-04-17 | 2018-11-02 | 虎尾科技大学 | Optical rotating shaft multi-degree-of-freedom error detection device and method |
| CN110977612A (en) * | 2019-11-18 | 2020-04-10 | 上海爱堃智能***有限公司 | CNC (computer numerical control) machining online measurement error correction method and system |
-
2015
- 2015-05-29 CN CN201520365284.4U patent/CN204757949U/en not_active Withdrawn - After Issue
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105043317A (en) * | 2015-05-29 | 2015-11-11 | 中国工程物理研究院总体工程研究所 | Device and method for measuring dynamic revolution error of main shaft of set of revolution equipment |
| CN105043317B (en) * | 2015-05-29 | 2017-06-23 | 中国工程物理研究院总体工程研究所 | The measurement apparatus and measuring method of complete revolution equipment main shaft dynamic rotation error |
| CN108731595A (en) * | 2017-04-17 | 2018-11-02 | 虎尾科技大学 | Optical rotating shaft multi-degree-of-freedom error detection device and method |
| CN108731595B (en) * | 2017-04-17 | 2020-04-21 | 虎尾科技大学 | Optical rotating shaft multi-degree-of-freedom error detection device and method |
| CN110977612A (en) * | 2019-11-18 | 2020-04-10 | 上海爱堃智能***有限公司 | CNC (computer numerical control) machining online measurement error correction method and system |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20151111 Effective date of abandoning: 20170623 |