CN104596465A - Characteristic sample piece and method used for detecting axial system error of three-axis diamond lathe - Google Patents
Characteristic sample piece and method used for detecting axial system error of three-axis diamond lathe Download PDFInfo
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- CN104596465A CN104596465A CN201510053028.6A CN201510053028A CN104596465A CN 104596465 A CN104596465 A CN 104596465A CN 201510053028 A CN201510053028 A CN 201510053028A CN 104596465 A CN104596465 A CN 104596465A
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- feature
- axial system
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- diamond lathe
- face
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/20—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring contours or curvatures, e.g. determining profile
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/22—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring angles or tapers; for testing the alignment of axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/30—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring roughness or irregularity of surfaces
Abstract
The invention discloses a characteristic sample piece and method used for detecting the axial system error of a three-axis diamond lathe. The characteristic sample piece is composed of a base and a characteristic body. The characteristic body is arranged on the end face of the top of the base and coaxially arranged together with the end face of the top of the base. The whole characteristic body is in a cylinder shape. An annular inwards-concave curved surface is arranged in the middle, in the height direction, of the cylinder. The detection method includes the steps of firstly, machining the characteristic sample piece through the three-axis diamond lathe which is arranged in a T shape; secondly, measuring the outer cylinder face of the characteristic sample piece through a cylindricity instrument after machining is completed, and measuring the end face of the characteristic sample piece and the annular inwards-concave curved surface through the cylindricity instrument; thirdly, inferring the axial system error of the three-axis diamond lathe according to the detection result obtained in the second step. The designed sample piece has the advantages of being simple in structure, convenient to machine, capable of effectively reflecting the axial system error, and the like, and a new method is provided for the error detection of the three-axis diamond lathe and the acceptance check of the lathe.
Description
Technical field
The invention belongs to ultra precision diamond turning machine field, relating to a kind of feature exemplar for detecting three axle diamond lathe axial system errors and method.
Background technology
At present, check and accept for diamond lathe error-detecting and lathe, temporary without national standard and Patents document, present stage examination criteria main reference GB17421 lathe inspection general rule, but GB17421 lathe inspection general rule is mainly for conventional and micron order numerically-controlled machine, to ultraprecise grade diamond lathe, there is certain limitation.
Error detection method majority between present stage three axle diamond lathe axle system all depends on the high precision instrument equipment such as square chi, high precision dial gauge, Laser Autocollimator, laser interferometer, these equipment are expensive, complex operation not only, and having very harsh requirement to testing environment, the technical merit of measurement result and operating personnel has comparatively Important Relations simultaneously.
The serpentine that CN100468038C discloses a kind of integrated detecting precision of numerical control milling machine detects test specimen and detection method thereof, can be judged interlock performance and the working ability of five axle milling machines by the crudy of S shape exemplar.The detection method majority of existing feature based exemplar is for five axle milling machines, there is no the Patents for diamond lathe at present.
Summary of the invention
The object of this invention is to provide a kind of feature exemplar for detecting three axle diamond lathe axial system errors and method, by machining feature exemplar and the reverse error symbolized between three axle diamond lathe axle systems of method detecting exemplar geometric accuracy.It is simple, easy to process and effectively can reflect the features such as axial system error that designed exemplar has structure, is that three axle diamond lathe error-detectings and lathe are checked and accepted and provided a kind of new method.
The object of the invention is to be achieved through the following technical solutions:
A kind of feature exemplar for detecting three axle diamond lathe axial system errors, comprise pedestal and feature main body two parts, feature main body to be arranged on the end face of pedestal top and coaxially to arrange with it, the global shape of described feature main body is right cylinder, and the centre position in described cylinder height direction is provided with ring-type inner sunken face.
Feature based exemplar detects a method for three axle diamond lathe axial system errors, and concrete implementation step is as follows:
One, use three axle diamond lathe machining feature exemplars of landing tee office, during the external cylindrical surface of processing column body, only need Z axis straight-line feed, all the other diaxons keep motionless; During the top end facial plane of processing column body, only need X-axis straight-line feed, all the other diaxons keep motionless; During processing ring-type inner sunken face, X, Z diaxon carries out circular interpolation motion simultaneously;
Two, machine rear employing cylindricity instrument to measure feature exemplar, mainly comprise the tapering of external cylindrical surface, the flatness of end face and the circularity of ring-type inner sunken face;
Three, according to the testing result of step 2, the axial system error of three axle diamond lathes is inferred.
In the present invention, described pedestal is solid of revolution cylinder, and thickness 10mm, chamfering is excessive.Diameter about the 30mm larger than cylindrical diameter of pedestal.
In the present invention, described feature main body overall dimensions is depending on the maximum range of work of Z axis, and characteristic length too in short-term, can not reflect axial system error completely, and is usual range within the range of work 70%.Therefore, feature main body overall dimensions should be between the maximum range of work 60-70% of Z axis.
In the present invention, described cylindrical top end radius surface size is depending on the maximum range of work of X-axis.When end face diameter is too little, axial system error can not be reflected completely, and be usual range within the range of work 70%.End face is cyclically symmetric structure, and therefore, end face radius size is between the maximum range of work 30-35% of X-axis.
In the present invention, described ring-type inner sunken face is the concave spherical surface of R50D20, and the radius of ball is 50mm, is 20mm at cylindrical bore D, and spherical surface position is distributed in center, cylinder length direction.
Tool of the present invention has the following advantages:
1, simplify diamond lathe axle system relation testing process, testing result comparatively common detection methods is more effective, and testing result during conventional sense is Static Detection result, accurately cannot reflect the axle system spatial relationship under diamond lathe actual service conditions.Can be subject to the impact of the factor such as actual working environment, workpiece technological parameter during machine tooling, and the feature exemplar directly machined by lathe can the entirely accurate reflection true running status of lathe and axle system relation.
2, the reverse detection method of feature based exemplar is referred to ultra precision diamond turning machine field by the present invention, simplification detection method and testing process, and the detection for ultra precision diamond turning machine provides a kind of effective new approaches.
3, diamond lathe axle system relation can be realized detect without the need to high precision, expensive professional checkout equipment, operate without the need to professional testing staff, after editting job sequence, automatic processing can be realized.
Accompanying drawing explanation
Fig. 1 is the process chart of detection method;
Fig. 2 is three axle diamond lathes of typical landing tee office;
Fig. 3 is feature exemplar 3-D view;
Fig. 4 is feature exemplar front elevation;
Fig. 5 is main shaft and Z axis parallelism error schematic diagram;
Fig. 6 is main shaft and X-axis error of perpendicularity schematic diagram.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is further described; but be not limited thereto; everyly technical solution of the present invention modified or equivalent to replace, and not departing from the spirit and scope of technical solution of the present invention, all should be encompassed in protection scope of the present invention.
Embodiment one: present embodiments provide for a kind of method that feature based exemplar detects three axle diamond lathe axial system errors, analyzed by theory deduction, can learn that spatial relationship between three axles is to the interact relation of institute's processing work face shape error, and then according to above-mentioned relation, design accurately can reflect the feature exemplar of machine spindle system spatial relationship, the precision equipments such as cylindricity instrument are adopted to detect processed feature exemplar, by every measurement data, the spatial relationship between diamond lathe axle system reversely can be symbolized.
As shown in Figure 1, concrete implementation step is as follows:
One, diamond lathe machining feature exemplar is used.Three axle diamond lathes of landing tee office as shown in Figure 1, X, Z two linear axis adopt T-shaped to be arranged vertically, main shaft (band C s function) is positioned in X-axis, and knife rest is placed on Z axis.As shown in Figure 3-4, feature exemplar is made up of pedestal 1 and feature main body 2 two parts, feature main body 2 to be arranged on the end face of pedestal 1 top and coaxially to arrange with it, and the global shape of described feature main body 2 is right cylinder 4, and the centre position of described right cylinder 4 short transverse is provided with ring-type inner sunken face 3.The working range that the range of size of designed feature exemplar is the most frequently used with diamond lathe is consistent.
Two, in process, during the external face of cylinder of processing column, only need Z axis straight-line feed, all the other diaxons keep motionless; During processing column body end face plane, only need X-axis straight-line feed, all the other diaxons keep motionless; During processing ring-type inner sunken face, X, Z diaxon carries out circular interpolation motion simultaneously.
Three, machine rear employing cylindricity instrument to measure feature exemplar, mainly comprise the tapering of external cylindrical surface, the flatness of end face and the circularity of ring-type inner sunken face.
Four, by the testing result of external cylindrical surface, the depth of parallelism relation between known Z axis and main shaft; Verticality relation between the known X-axis of testing result of end face plane degree and main shaft.Verticality relation between external cylindrical surface and end face can judge the verticality between X, Z axis.The surface figure accuracy of ring-type inner sunken face can infer the interpolation ability between X, Z axis.
Embodiment two: present embodiments provide for a kind of method that feature based exemplar detects three axle diamond lathe axial system errors, concrete implementation step is as follows:
One, diamond lathe machining feature exemplar is used.
Two, during the external face of cylinder of processing column, only need Z axis straight-line feed, all the other diaxons keep motionless; During processing column body end face plane, only need X-axis straight-line feed, all the other diaxons keep motionless; During processing ring-type inner sunken face, X, Z diaxon carries out circular interpolation motion simultaneously.
Three, the diameter change of right cylinder 4 is measured with cylindricity instrument.Respectively two parts up and down of right cylinder 4 are divided into 5 sections to measure and record according to size uniform in the longitudinal direction, measure circularity at corresponding segment place, outcome record is got off.Finally, go out the cylindricity of external cylindrical surface by 10 measure data fitting, the parallel relation of Z axis and main-shaft axis diameter can be learnt by the result of cylindricity, and the large I of nonparallelism is derived by the length of diameter increm ent and feature main body and obtained.
As shown in Figure 5, when main shaft and Z axis do not exist parallelism error, the cylindricity of external cylindrical surface is theoretical profile.When there is parallelism error between diaxon (clockwise direction as shown in the figure), the external cylindrical surface simulated is tapered, and diminishes gradually from bottom to top.Otherwise, if the external cylindrical surface simulated be become gradually from bottom to top large tapered time, the parallelism error between diaxon is counterclockwise.The large I of nonparallelism is determined by the ratio between largest diameter and the length of minimum difference and feature main body.
Suppose, the difference at largest diameter and minimum place is D, and the length of feature main body is L, and parallelism error a, then have: a=arctan(D/2*L).
Four, the flatness of right cylinder 4 top end face is measured with cylindricity instrument.When cylindricity instrument measures the flatness of end face, should be first the centre of gyration line of benchmark determination feature exemplar with outside cylinder.During measurement, should ensure that the running orbit of cylindricity instrument probe is by the centre of gyration of end face or as far as possible close to the centre of gyration, so that data are truer.Finally, by the flatness result of end face, learn the verticality relation of X-axis and main-shaft axis diameter, and the error of perpendicularity can be obtained by the flatness derivation of end face.
As shown in Figure 6, when there is not the error of perpendicularity between main shaft and X-axis, the flatness of end face is theoretical profile.When there is the error of perpendicularity between diaxon (clockwise direction as shown in the figure), there is error in the flatness of end face, and center is lower than edge.Otherwise, if centered by flatness higher than edge time, the error of perpendicularity between diaxon is counterclockwise.The error of perpendicularity can be derived by the flatness of end face and be obtained.
Suppose, the difference of plane peak and minimum point is L, and end face radius is R, and the error of perpendicularity is b, then have: b=arcsin(L/R).
Five, the verticality relation between X, Z axis, can be obtained by the verticality between external cylindrical surface and end face.The error of perpendicularity between external cylindrical surface and end face is the error of perpendicularity between X, Z axis.
Six, the deviation from circular from adopting cylindricity instrument to carry out ring-type inner sunken face detects.Complete the processing of ring-type inner sunken face needs X, Z diaxon to link with the form of circular interpolation simultaneously, and the speed of feed of diaxon is unequal, determined by sphere dimensional structure.Therefore, the deviation from circular from of ring-type inner sunken face can reflect two-axle interlocking performance, and the less explanation linkage of deviation from circular from is better.
During detection, it is first the centre of gyration line of benchmark determination feature exemplar with outside cylinder, then need to drive cylindricity instrument gauge head to carry out cylindricity detection along arbitrary bus of axis direction cylinder to foreign round, and measurement data is derived, the deviation from circular from of ring-type inner sunken face is drawn by the method for artificial treatment.
During data processing, the straight-line segment data corresponding to right cylinder about 4 two parts are carried out slope leveling process, and using the straight line after this leveling as benchmark.To the circular arc data corresponding to ring-type inner sunken face 3, adopt minimum two-multiply law to carry out matching, and compare with ideal circle-arc, can deviation from circular from be obtained.
Claims (9)
1. one kind for detecting the feature exemplar of three axle diamond lathe axial system errors, it is characterized in that described feature exemplar is made up of pedestal and feature main body two parts, feature main body to be arranged on the end face of pedestal top and coaxially to arrange with it, the global shape of described feature main body is right cylinder, and the centre position in described cylinder height direction is provided with ring-type inner sunken face.
2. the feature exemplar for detecting three axle diamond lathe axial system errors according to claim 1, is characterized in that described pedestal is solid of revolution cylinder.
3. the feature exemplar for detecting three axle diamond lathe axial system errors according to claim 1 and 2, is characterized in that the thickness of described pedestal is 10mm.
4. the feature exemplar for detecting three axle diamond lathe axial system errors according to claim 3, is characterized in that the diameter of described pedestal 30mm larger than cylindrical diameter.
5. the feature exemplar for detecting three axle diamond lathe axial system errors according to claim 1, it is characterized in that the radius of described ring-type inner sunken face is 50mm, is 20mm at cylindrical bore.
6. utilize feature exemplar described in the arbitrary claim of claim 1-5 to detect a method for three axle diamond lathe axial system errors, it is characterized in that described method step is as follows:
One, use three axle diamond lathe machining feature exemplars of landing tee office, during the external cylindrical surface of processing column body, only need Z axis straight-line feed, all the other diaxons keep motionless; During the top end facial plane of processing column body, only need X-axis straight-line feed, all the other diaxons keep motionless; During processing ring-type inner sunken face, X, Z diaxon carries out circular interpolation motion simultaneously;
Two, machine rear employing cylindricity instrument to measure feature exemplar;
Three, according to the testing result of step 2, the axial system error of three axle diamond lathes is inferred.
7. the method utilizing feature exemplar to detect three axle diamond lathe axial system errors according to claim 6, is characterized in that described feature main body overall dimensions should be between the maximum range of work 60-70% of Z axis.
8. the method utilizing feature exemplar to detect three axle diamond lathe axial system errors according to claim 6, is characterized in that described cylindrical top end radius surface size should be between the maximum range of work 30-35% of X-axis.
9. the method utilizing feature exemplar to detect three axle diamond lathe axial system errors according to claim 6, it is characterized in that the concrete estimating method of described axial system error is as follows: by the testing result of external cylindrical surface, the depth of parallelism relation between known Z axis and main shaft; By the verticality relation between the known X-axis of the testing result of end face plane degree and main shaft; The verticality between X, Z axis can be judged by the verticality relation between external cylindrical surface and end face; The interpolation ability between X, Z axis can be inferred by the surface figure accuracy of ring-type inner sunken face.
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| CN201510053028.6A CN104596465B (en) | 2015-01-31 | 2015-01-31 | For detecting feature exemplar and the method for three axle diamond lathe axial system errors |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109048496A (en) * | 2018-09-11 | 2018-12-21 | 湖北三江航天红阳机电有限公司 | A kind of Five Axis lathe integration test pyramid part and its detection method |
| CN114322716A (en) * | 2020-09-29 | 2022-04-12 | 宝山钢铁股份有限公司 | Correction instrument for detecting contour error of upper sealing surface of threaded oil sleeve and correction method thereof |
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| CN101000285A (en) * | 2007-01-16 | 2007-07-18 | 成都飞机工业（集团）有限责任公司 | S-shaped test piece for integrated detecting precision of numerical control milling machine and its detecting method |
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| CN201795981U (en) * | 2010-08-30 | 2011-04-13 | 中冶天工上海十三冶建设有限公司 | Concrete anti-seepage test piece sleeve with sealing device |
| CN103759685A (en) * | 2014-01-10 | 2014-04-30 | 天津大学 | Detection method for recognizing geometric accuracy of four-axis machining center |
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2015
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| EP0876234B1 (en) * | 1996-01-25 | 1999-11-03 | Commissariat A L'energie Atomique | Triaxial lathe using polar movements |
| CN101000285A (en) * | 2007-01-16 | 2007-07-18 | 成都飞机工业（集团）有限责任公司 | S-shaped test piece for integrated detecting precision of numerical control milling machine and its detecting method |
| JP2008281468A (en) * | 2007-05-11 | 2008-11-20 | Tokyo Seimitsu Co Ltd | Angle indexing accuracy measuring device and method |
| CN201795981U (en) * | 2010-08-30 | 2011-04-13 | 中冶天工上海十三冶建设有限公司 | Concrete anti-seepage test piece sleeve with sealing device |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109048496A (en) * | 2018-09-11 | 2018-12-21 | 湖北三江航天红阳机电有限公司 | A kind of Five Axis lathe integration test pyramid part and its detection method |
| CN114322716A (en) * | 2020-09-29 | 2022-04-12 | 宝山钢铁股份有限公司 | Correction instrument for detecting contour error of upper sealing surface of threaded oil sleeve and correction method thereof |
| CN114322716B (en) * | 2020-09-29 | 2023-11-14 | 宝山钢铁股份有限公司 | Calibrating instrument for detecting contour error of upper sealing surface of threaded oil sleeve and calibrating method thereof |
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