CN101825454A - Method for compensating temperature errors based on bidirectional measurement - Google Patents
Method for compensating temperature errors based on bidirectional measurement Download PDFInfo
- Publication number
- CN101825454A CN101825454A CN201010168938A CN201010168938A CN101825454A CN 101825454 A CN101825454 A CN 101825454A CN 201010168938 A CN201010168938 A CN 201010168938A CN 201010168938 A CN201010168938 A CN 201010168938A CN 101825454 A CN101825454 A CN 101825454A
- Authority
- CN
- China
- Prior art keywords
- measurement
- error compensation
- measuring
- temperature error
- temperature
- 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.)
- Pending
Links
Images
Abstract
The invention belongs to the testing technology and instrument field and provides temperature error compensation technology based on bidirectional measurement. The technology improves the measuring stability of cylindrical coordinate measuring machines. The invention adopts the following technical scheme: 1. selecting or designing and manufacturing a measuring head capable of bidirectional measurement of apertures; 2. utilizing a traceable gauge to calibrate the zero position and the axial direction of each measuring frame of the measuring machine, wherein the inner diameter and the outer diameter of the gauge are already calibrated; 3. establishing a mathematical model for temperature error compensation; 4. compiling the error compensation program on the basis of established mathematical model for temperature error compensation; 5. adding the section needing to be measured for temperature error compensation to the measuring program; and 6. carrying out measuring result data processing and realizing temperature error compensation. The technology is mainly applied to measurement of rotational parts.
Description
Technical field
The present invention relates to the temperature error compensation technology of three-coordinate measuring machine with cylindrical-coordinate system, can be under the service condition of workshop, the measuring error that measuring machine and workpiece deformation produced that causes for temperature variation realizes effectively compensation, improves measuring accuracy.Belong to measuring technology and instrument field.Specifically relate to method for compensating temperature errors based on bidirectional measurement.
Background technology
Revolving parts occupies very big proportion especially in war production in industrial various parts.They are widely used in the fields such as industry, Aeronautics and Astronautics, national defence as the vital part of machine.The bus of rotary type workpiece can be straight-line segment or arc section, and the shape on surface can be the face of cylinder, circular conical surface, sphere, anchor ring, plane etc.Although the structure of rotary part is different and different with its purposes with size, its structure generally all has following characteristics: the circularity to each cross section has higher requirements, and has a plurality of inside and outside circle surfaces of revolution to need to detect, and their right alignment is had relatively high expectations.These parts are the key component of machine, equipment often, and are big in batches, need 100% to detect.The high precision of revolving parts, high-level efficiency have become the active demand of many departments in national economy and the national defence.
Three-coordinate measuring machine with cylindrical-coordinate system is particularly suitable for the detection of revolving parts.The overall formation of three-coordinate measuring machine with cylindrical-coordinate system and principle of work are as shown in Figure 1.Measuring machine is made up of rotary table and several measurement bays.Workpiece is installed on the rotary table and is felt relieved by clamp, and drives rotation continuously by rotary table.Various gauge heads are housed respectively on the measurement bay, with the surfaces externally and internally of measuring workpieces axially and radial dimension, shape and site error.
Three-coordinate measuring machine with cylindrical-coordinate system has following advantage.
1) workpiece rotates continuously during the efficiency of measurement high measurement, gauge head maintains static, and workpiece rotates 1 circle, just finishes the measurement to a cross section.And in conventional orthogonal formula three coordinate measuring machine, need pointwise to measure, very time-consuming.
2) the high employing of morpheme measuring accuracy measured in turning course, have only the uncertainty of measurement influence of the kinematic error of rotary table and gauge head to measure the precision of morpheme errors such as circularity, circle are beated, right alignment, and the kinematic error of each parts on each measurement bay does not have influence substantially for these morpheme measuring accuracy, because they are motionless when measuring a cross section.
3) simple, the anticollision problem ratio of gauge head motion is easier to solve.
But the circular cylindrical coordinate measuring machine also has its problem.This mainly be the size of measured workpiece can not be directly from each measurement bay scale read.The just relative displacement of each movable stand of from scale, reading, in order to determine the absolute dimension of measured workpiece, need know the position of the true origin of each measurement bay with respect to the rotary table coordinate origin, and the direction relations between the coordinate axis, promptly realize the unification of each measurement bay and rotary table coordinate system.Usually realize the unification of this coordinate system by demarcation to standard.
Yet, as shown in Figure 1,, cause measuring error because temperature variation can make each measurement bay change with respect to the position of rotary table and the direction of coordinate axis.The measuring error that causes for the circular cylindrical coordinate measuring machine temperature variation of using in the workshop can be very big especially, often reaches tens to hundreds of microns.The most frequently used method of temperature error compensation is to set up temperature field and thermal deformation model.This method is not only complicated, and the effect that is difficult to obtain.Particularly under shop condition, temperature variation complexity, the effect that adopts the method for setting up models for temperature field and thermal deformation model to be difficult to obtain.
Find that in practice some revolving parts need be connected with associated part by screw thread, and guarantee that the associated part that is connected has position and direction accurately, need by some sleeves for this reason, as the associated part of simulation, measure its jerk value at the extending part that leaves part certain position place.Can utilize it to realize temperature error compensation with sleeve as standard in this case.But workpiece is not threaded under more situation, does not perhaps have the jerk value of extending part to need to measure.At this moment for temperature error compensation, it is just inconvenient to introduce special-purpose sleeve.
Summary of the invention
For overcoming the deficiencies in the prior art, realize the temperature compensation in the revolving parts precision measurement, the technical solution used in the present invention is to comprise the following steps:
1. selected or manufacture and design the gauge head that can carry out the aperture bidirectional measurement;
2. utilize that an internal diameter, external diameter all pass through demarcation, the gauge that can trace to the source is demarcated zero-bit, the axis direction of each measurement bay of measuring machine;
3. set up the mathematical model of temperature error compensation;
4. on the mathematical model basis of the temperature error compensation of setting up, write the error compensation program, and it is joined in workpiece calibration result's the data processor;
5. will join for the cross section of carrying out the required measurement of temperature error compensation in the process of measurement, and in the measuring workpieces process, add and survey the cross section that is used for the required measurement of error compensation;
6. carry out the measurement result data processing, realize temperature error compensation.
The present invention has following technique effect:
1, can be to the arbitrary section place owing to the inside and outside footpath measuring error that temperature variation causes compensates;
2, simple and efficient.
Description of drawings
Fig. 1 is a circular cylindrical coordinate measuring machine fundamental diagram.
The axial parameter of 1-rotary table 2-anchor clamps 3-is surveyed frame 4-measurement axis outward and is surveyed main shaft 7-radially survey radially gauge head outside the parameter measurement of interior gauge head 9-that frame 8-can carry out bidirectional measurement outside the parameter in the outer gauge head 5-workpiece 6-of parameter.
Fig. 2 calibrates to the error compensation instrumentation plan in being.
Fig. 3 is a bidirectional measurement device synoptic diagram.
Fig. 4 is the outer frame radial error compensating measure synoptic diagram of surveying.
Survey main shaft 14-in the 11-rotary table 12-workpiece 13-and survey the outer gauge head of frame 15-outward.
Embodiment
The object of the present invention is to provide a kind of temperature error compensation technology, improve circular cylindrical coordinate measuring machine measurement stability based on bidirectional measurement.
The temperature error of measuring workpieces size is mainly caused by the factor aspect following three on the circular cylindrical coordinate measuring machine.
1. measurement bay produces translation with respect to rotary table.
2. the axis of movement direction of measurement bay deflects with respect to axis of rotation.
3. the thermal expansion of workpiece itself.
The present invention proposes a kind of technology that realizes temperature error compensation by the method for bidirectional measurement.Its principle of work as shown in Figure 2.
On the circular cylindrical coordinate measuring machine during measuring workpieces diameter, the just relative displacement of each movable stand of from scale, reading, in order to determine the absolute dimension of measured workpiece, need know the relative position of the true origin of each measurement bay with respect to the rotary table coordinate origin, the true origin that makes measurement bay owing to reasons such as thermal deformations changes with respect to the position of rotary table coordinate origin will bring measuring error.Under the right side situation of measured hole shown in Fig. 2 a, if because thermal deformation makes the interior survey main shaft of the measuring machine δ that moves to right
1, will make the aperture value that measures reduce 2 δ
1In order to compensate this error, can utilize a kind of device that can realize bidirectional measurement, measure once more from the left side, shown in Fig. 2 b.At this moment, the main shaft of the measuring machine δ that moves to right
1Can make the aperture value that measures increase 2 δ
1By twice measurement of the left and right sides, get its mean value, survey the measuring error of main shaft translation in the measuring machine that just can eliminate because thermal deformation etc. causes.
Twice measurement result by asking for the left and right sides poor just can obtain 4 δ
1Thereby, survey main shaft translational movement δ in the measuring machine that obtain because thermal deformation etc. causes
1, temperature error compensation is carried out in the aperture in each cross section.
In general, the distance between the zero-bit of measurement bay scale and rotary table axis is big more many than inner diameter of workpiece, can think that temperature error is mainly caused by the variation with respect to the rotary table axial line distance of the zero-bit of interior survey main shaft scale.
Yet, survey the translation of main shaft in temperature variation not only can cause, and the angle between them is changed with respect to the rotary table axis.Because interior survey main shaft can make at the differing heights section with respect to the deflection of rotary table axis, interior survey main shaft is with respect to the translational movement difference of rotary table axis.In order to address this problem, need on two different height, carry out the measurement of the left and right sides, shown in Fig. 2 c and 2d.Like this by on two different height, carrying out the measurement of the left and right sides, survey the translational movement δ of main shaft in obtaining respectively on these two cross sections with respect to the rotary table axis
1And δ
2, survey the deflection of main shaft in just can calculating with respect to the rotary table axis
Measuring δ
1And δ
2The back just can be to the arbitrary section place owing to the outside diameter measuring error that temperature variation causes compensates.
Carry out inside diameter measurement from the left and right sides, can realize by many methods.Utilize two oppositely small-sized gauge heads of butt joint among Fig. 3 a; Adopt a kind of formula mechanism of declining among Fig. 3 b, it can combine with the unidirectional gauge head of general commodity, realizes bidirectional measurement; Fig. 3 c utilizes the gauge head solid of revolution with 180 ° of transpositions of gauge head, realizes bidirectional measurement.
The temperature error compensation of outside diameter measuring is than inner diameter measurement complexity.As shown in Figure 1, though outer gauge head can be designed to be able to bi-directional probing, perhaps utilize the gauge head solid of revolution to carry out 180 ° of transpositions, the opposite side that it is difficult to forward to workpiece carries out radial measurement.In order to realize the temperature error of outside diameter measuring, need on the cross section of two differing heights, measure the translational movement of the zero-bit of external pelivimetry frame equally with respect to the rotary table axis.
The rotor outside surface that can select rotary table for use is as first baseline cross-section, and the external diameter of the rotor of rotary table can need accurately to demarcate in advance.By in the measuring workpieces process, add the external diameter of surveying rotor (Fig. 4 a), thus obtain since the zero-bit of the external pelivimetry frame that temperature variation etc. cause with respect to the translational movement δ of rotary table axis on this cross section
3
The interior survey main shaft surface that can select a certain height place for use is as second cross section.Survey main shaft on the one hand and can rise very highly, help widening two distances between the cross section like this, determine the outer precision of surveying axle with respect to the rotary table axis tilt thereby improve.On the other hand, the initial position on interior survey main shaft surface can be demarcated by the measurement standard gauge, and the change in location of survey main shaft has been determined in inner diameter measurement temperature error compensation process in actual measurement, and the therefore interior position of surveying the main shaft surface is known.In the measuring workpieces process, can be benchmark with it, by surveying the position (Fig. 4 b) of main shaft in measuring with outer gauge head, the zero-bit of determining the external pelivimetry frame is with respect to the translational movement δ of rotary table axis on second cross section
4According to measuring δ
3And δ
4The back just can be to the arbitrary section place owing to the outside diameter measuring error that temperature variation causes compensates.
Be summarised as by last example:
1. selected or manufacture and design the gauge head that can carry out the aperture bidirectional measurement.
2. utilize that an internal diameter, external diameter all pass through demarcation, the gauge that can trace to the source is demarcated zero-bit, the axis direction of each measurement bay of measuring machine.
3. set up the mathematical model of temperature error compensation.
4. on the mathematical model basis of the temperature error compensation of setting up, write the error compensation program, and it is joined in workpiece calibration result's the data processor.
5. will join for the cross section of carrying out the required measurement of temperature error compensation in the process of measurement, and in the measuring workpieces process, add and survey the cross section that is used for the required measurement of error compensation.
6. carry out the measurement result data processing, realize temperature error compensation.
Claims (1)
1. the method for compensating temperature errors based on bidirectional measurement is characterized in that, comprises the following steps:
(1) selected or manufacture and design the gauge head that can carry out the aperture bidirectional measurement;
(2) utilize that an internal diameter, external diameter all pass through demarcation, the gauge that can trace to the source is demarcated zero-bit, the axis direction of each measurement bay of measuring machine;
(3) set up the mathematical model of temperature error compensation;
(4) on the mathematical model basis of the temperature error compensation of setting up, write the error compensation program, and it is joined in workpiece calibration result's the data processor;
(5) will join for the cross section of carrying out the required measurement of temperature error compensation in the process of measurement, and in the measuring workpieces process, add and survey the cross section that is used for the required measurement of error compensation;
(6) carry out the measurement result data processing, realize temperature error compensation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010168938A CN101825454A (en) | 2010-05-13 | 2010-05-13 | Method for compensating temperature errors based on bidirectional measurement |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010168938A CN101825454A (en) | 2010-05-13 | 2010-05-13 | Method for compensating temperature errors based on bidirectional measurement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101825454A true CN101825454A (en) | 2010-09-08 |
Family
ID=42689509
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010168938A Pending CN101825454A (en) | 2010-05-13 | 2010-05-13 | Method for compensating temperature errors based on bidirectional measurement |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101825454A (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975564A (en) * | 2010-09-26 | 2011-02-16 | 天津大学 | Temperature error compensation method based on three-section measurement |
| CN106500641A (en) * | 2016-10-21 | 2017-03-15 | 北京信息科技大学 | The thermal deformation error compensating method of articulated coordinate machine |
| CN106695880A (en) * | 2015-11-13 | 2017-05-24 | 联合汽车电子有限公司 | Error correction device for equipment zero position of robot and correction method for equipment zero position |
| CN111060010A (en) * | 2019-12-16 | 2020-04-24 | 天津大学 | Parallel plane parameter on-machine measurement system and measurement method |
| CN113020287A (en) * | 2021-03-01 | 2021-06-25 | 太原理工大学 | Method for setting sinusoidal roller type corrugated roll gap of metal composite plate |
| CN115325984A (en) * | 2022-07-21 | 2022-11-11 | 中国航发航空科技股份有限公司 | Universal simulation measuring device and method for measuring sizes of casings with different linear expansion coefficients |
-
2010
- 2010-05-13 CN CN201010168938A patent/CN101825454A/en active Pending
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101975564A (en) * | 2010-09-26 | 2011-02-16 | 天津大学 | Temperature error compensation method based on three-section measurement |
| CN101975564B (en) * | 2010-09-26 | 2012-09-05 | 天津大学 | Temperature error compensation method based on three-section measurement |
| CN106695880A (en) * | 2015-11-13 | 2017-05-24 | 联合汽车电子有限公司 | Error correction device for equipment zero position of robot and correction method for equipment zero position |
| CN106695880B (en) * | 2015-11-13 | 2019-09-17 | 联合汽车电子有限公司 | The error correction device and its equipment zero correction method of the equipment zero-bit of robot |
| CN106500641A (en) * | 2016-10-21 | 2017-03-15 | 北京信息科技大学 | The thermal deformation error compensating method of articulated coordinate machine |
| CN106500641B (en) * | 2016-10-21 | 2018-12-14 | 北京信息科技大学 | The thermal deformation error compensating method of articulated coordinate machine |
| CN111060010A (en) * | 2019-12-16 | 2020-04-24 | 天津大学 | Parallel plane parameter on-machine measurement system and measurement method |
| CN113020287A (en) * | 2021-03-01 | 2021-06-25 | 太原理工大学 | Method for setting sinusoidal roller type corrugated roll gap of metal composite plate |
| CN113020287B (en) * | 2021-03-01 | 2023-08-18 | 太原理工大学 | Setting method of sine roll type corrugated roll gap of metal composite plate |
| CN115325984A (en) * | 2022-07-21 | 2022-11-11 | 中国航发航空科技股份有限公司 | Universal simulation measuring device and method for measuring sizes of casings with different linear expansion coefficients |
| CN115325984B (en) * | 2022-07-21 | 2023-09-15 | 中国航发航空科技股份有限公司 | Universal simulation measuring device and method for measuring sizes of casings with different linear expansion coefficients |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101975564B (en) | Temperature error compensation method based on three-section measurement | |
| Castro | A method for evaluating spindle rotation errors of machine tools using a laser interferometer | |
| Archenti et al. | Accuracy analysis of machine tools using Elastically Linked Systems | |
| Uekita et al. | On-machine dimensional measurement of large parts by compensating for volumetric errors of machine tools | |
| CN101825454A (en) | Method for compensating temperature errors based on bidirectional measurement | |
| CN110631534B (en) | Method for detecting pitch diameter and pitch of taper thread of oil sleeve joint | |
| CN109141225A (en) | Shafting five, six degree of freedom error measurement method and measuring system based on Circular gratings | |
| CN101825453A (en) | Temperature error compensation method for three-coordinate measuring machine with cylindrical-coordinate system | |
| Zha et al. | Four-station laser tracer-based geometric error measurement of rotary table | |
| CN110345838B (en) | Method for measuring working radius of four-axis centrifugal machine | |
| CN105066883A (en) | Method for rapidly measuring end surface pin hole location degree of revolving body type part | |
| CN112192317B (en) | Method for measuring machine tool spindle space three-dimensional error by using double-ball bar instrument | |
| Lou et al. | A self-calibration method for rotary tables’ five degrees-of-freedom error motions | |
| Li et al. | A high-speed in situ measuring method for inner dimension inspection | |
| Zeng et al. | On-position measurement method for position-error compensation in machining | |
| Kurfess | Precision manufacturing | |
| Knapp et al. | Testing the contouring performance in 6 degrees of freedom | |
| CN110332892A (en) | A kind of accurate detecting method | |
| US10222193B2 (en) | Method and apparatus for inspecting workpieces | |
| Maruyama et al. | Measurement of machine tool two-dimensional error motions using direction-regulated laser interferometers | |
| Shi et al. | Research on geometric error measurement system of machining center BV75 based on laser interferometer | |
| JP6181935B2 (en) | Coordinate measuring machine | |
| CN105423850A (en) | Inspection measuring tool for inspecting shape and position dimensions of machined part | |
| Chen et al. | Geometric error identification for machine tools using a novel 1D probe system | |
| CN104913738A (en) | Machine tool inclined rotating bench movement precision detection method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Open date: 20100908 |