CN113985813B - Machine tool origin error compensation method based on-machine detection - Google Patents
Machine tool origin error compensation method based on-machine detection Download PDFInfo
- Publication number
- CN113985813B CN113985813B CN202111253919.8A CN202111253919A CN113985813B CN 113985813 B CN113985813 B CN 113985813B CN 202111253919 A CN202111253919 A CN 202111253919A CN 113985813 B CN113985813 B CN 113985813B
- Authority
- CN
- China
- Prior art keywords
- machine tool
- axis
- standard
- measurement
- standard ball
- 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.)
- Active
Links
- 238000000034 method Methods 0.000 title claims abstract description 39
- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000005259 measurement Methods 0.000 claims abstract description 58
- 238000004458 analytical method Methods 0.000 claims abstract description 14
- 238000002360 preparation method Methods 0.000 claims abstract description 11
- 238000004364 calculation method Methods 0.000 claims abstract description 6
- 239000000523 sample Substances 0.000 claims description 12
- 238000004519 manufacturing process Methods 0.000 abstract description 13
- 238000003754 machining Methods 0.000 abstract description 12
- 238000012545 processing Methods 0.000 description 8
- 238000005516 engineering process Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/404—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for compensation, e.g. for backlash, overshoot, tool offset, tool wear, temperature, machine construction errors, load, inertia
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/002—Measuring arrangements characterised by the use of optical techniques for measuring two or more coordinates
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/35—Nc in input of data, input till input file format
- G05B2219/35408—Calculate new position data from actual data to compensate for contour error
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Human Computer Interaction (AREA)
- Manufacturing & Machinery (AREA)
- Automation & Control Theory (AREA)
- Machine Tool Sensing Apparatuses (AREA)
- Numerical Control (AREA)
- Automatic Control Of Machine Tools (AREA)
Abstract
The invention discloses a machine tool origin error compensation method based on-machine detection, which comprises the steps of measuring preparation, finishing standard ball detection, finishing standard ball calibration and analysis, judging standard ball measurement accuracy, finishing standard gauge block all-way measurement, finishing machine tool origin error calculation, machine tool origin offset judgment, restarting a machine tool after power failure, ensuring that reset machine tool coordinates are effective, standard ball calibration and analysis, standard ball five-axis detection and outputting a machine tool origin; the method of the invention performs machine tool origin alignment and compensation on old equipment and equipment damaged by the grating ruler in the aviation manufacturing industry, improves the machining precision of the numerical control machine tool, further solves the problems that the machine tool cannot return to zero, the old equipment origin drifts, the part quality is reduced due to origin drifts and the like caused by equipment grating ruler damage, and simultaneously, the equipment with improved precision can be put into production again, and improves the production capacity.
Description
Technical Field
The invention relates to the technical field of aerospace numerical control machining, in particular to a machine tool origin error compensation method based on-machine detection.
Background
With the rapid development of the aviation manufacturing industry, the requirements on processing precision are higher and higher while the structures of aviation parts such as a casing, a blisk, blades and the like are more complex. In the face of increasingly strong market competition pressure, how to improve the machining precision of a machine tool, ensure the machining quality of parts, reduce the related production cost and increase the economic benefit is a development target of enterprises. Most of aviation parts are difficult-to-cut materials such as high-temperature alloy, powder high-temperature alloy, titanium alloy and the like, once cutting accidents occur in numerical control equipment or after continuous production for many years, the phenomenon of precision sliding inevitably occurs, and the processing quality of parts is affected. When the machining precision of the parts cannot be guaranteed, production tasks can be guaranteed only by adding new imported equipment, and the production cost is high and the benefit is low.
The prior machine tool has poor intelligent function, can only improve the quality of a machined part by means of the technical level of the excessive hardness of operators, and cannot effectively control error influencing factors such as product errors, thermal deformation, cutter abrasion, clamp deformation and the like. The numerical control technology and the numerical control measurement technology are effectively combined to solve the problem, such as installing equipment such as an accuracy compensation positive element measuring head, a position sensor, a grating ruler and the like on a numerical control machine tool, so that the machining error of the machine tool can be fed back to a numerical control system in real time, and the numerical control machine tool can automatically perform machining accuracy compensation, thereby improving the machining accuracy of parts and saving the raw material cost. At present, a batch of equipment in a manufacturing enterprise has the phenomenon that precision slides down due to the problems of equipment grating device damage, incapability of automatically resetting and the like, and machine tool fault diagnosis equipment such as a laser displacement sensor and the like can only repair the positioning precision and repeated positioning precision of a machine tool and cannot realize origin alignment and compensation, but the origin alignment is supported by no mature technical means in China aiming at numerical control equipment lacking sensors and grating equipment. To date, no technical method for compensating the origin of a machine tool based on-machine measurement technology has been disclosed.
Disclosure of Invention
In order to solve the technical problems, a machine tool origin error compensation method based on-machine detection is provided, and the specific technical scheme is as follows:
a machine tool origin error compensation method based on-machine detection comprises the following steps:
step 1, measurement preparation, namely preparing 1 spindle core rod, 1 cube, 1 standard gauge block, 1 measuring head for on-machine measurement, 1 probe and 1 standard ball;
the cube and the standard ball are arranged on a turntable of the machine tool, and the probe and the measuring head are matched and arranged in a tool magazine of the machine tool;
step 2, finishing standard ball detection, namely, aiming at a D25 standard ball, compiling a 25-point 3-axis measurement program for covering a hemispherical surface, calling a measuring head and a probe from a tool library of a machine tool, and finishing on-machine measurement of the standard ball under the reference of the machine tool;
step 3, standard ball calibration and analysis are completed, namely the measured standard ball data are compared with theoretical standard ball data, and the eccentric value of the standard ball measured data is calculated;
step 4, judging the measurement precision of the standard ball; measurement error e of standard ball 1 >0.01, compensating the calculated eccentric value into a standard ball measurement standard of the machine tool, executing the step 2, otherwise, executing the step 5;
step 5, finishing measurement of the standard gauge block in all directions, and calculating machine tool coordinates of the square block in all directions;
step 6, finishing the calculation of the origin error of the machine tool;
first, the side surface X of the machine tool table is measured 0 Measuring the same position X after the machine tool workbench rotates 180 degrees 180 Calculating the X-direction error e of the machine tool according to the basic data prepared by machine tool measurement and the coordinates of the cube in each direction x Error e in Y direction y Z-direction error e z Distance l from axis A to axis B A_B Distance Dis from table to A-axis A_Stage ；
Calculating the distance from the workbench to the A axis according to the coordinate values
Dis A_Stage ＝(CubicY 0 -CubicY 90 -2*H cubic -CubicZ 0 +CubicZ 90 )/2
Distance from axis A to axis B
l A_B ＝e y -(CubicY 90 +CubicY 90_180 )/2
Machine tool X-direction error
e x ＝-(X 0 +X 180 )/2
Machine tool Y-direction error
e y ＝CubicY 0 -Dis A_Stage -H cubic
Z-direction error of machine tool
e z ＝CubicZ 0 -Dis Cubic_B The method comprises the steps of carrying out a first treatment on the surface of the Wherein Dis Cubic_B Dis is the distance from the front of the cube to the center of the B axis Cubic_B ＝e y -CubicY 90 ；
Step 7, judging the origin offset of the machine tool;
when e is calculated x ，e y ，e z Beyond 0.03, the machine tool is moved to x 0 `、y 0 `、z 0 Resetting and executing the step 5;
when e is calculated x ，e y ，e z And when the temperature is less than or equal to 0.03, executing the step 8; wherein x is 0 、y 0 、z 0 X is the distance from the original coordinate point of the machine tool to the grating 0 `＝x 0 +e x 、y 0 `＝y 0 +e y 、z 0 `＝z 0 +e z ；
Step 8, restarting the machine tool after power failure, and ensuring that the reset machine tool coordinates are effective;
step 9, standard ball calibration and analysis, the three-axis measurement precision of the standard ball is converged to 0.01mm;
step 10, standard ball five-axis detection, analysis of measurement accuracy, and when e 3 >Executing the step 5 when the thickness is 0.03mm, otherwise executing the step 11;
and 11, outputting the origin of the machine tool.
In the preferred scheme of the machine tool origin error compensation method based on-machine detection, in the step 1, the main shaft core rod in preparation for measurement refers to a length L plug Diameter D plug Is a core rod of (a);
the cubic block in the preparation for measurement is H cubic Is a cubic block of (2);
the standard gauge block in the preparation of measurement is of a height h gauge Is a standard block of (c).
In the step 5, the standard gauge block is detected in each direction, namely a standard core rod is called out from a tool library of the machine tool, and 5-direction measurement is completed: namely, when the A axis is 0 degree and the B axis is 0 degree, the Z-direction coordinate of the standard gauge block is measured, and the Z-direction coordinate Z of the machine tool is recorded 0 The method comprises the steps of carrying out a first treatment on the surface of the Measuring the Y-direction coordinate of the standard gauge block when the A axis is 0 degree and the B axis is 0 degree, and recording the Y-axis sitting of the machine toolLabel Y 0 The method comprises the steps of carrying out a first treatment on the surface of the Measuring Z-direction coordinate of the standard gauge block when the angle of the axis A is between 90 degrees and 0 degree of the axis B, and recording Z-direction coordinate Z of the machine tool 90 The method comprises the steps of carrying out a first treatment on the surface of the Measuring the Y-direction coordinate of the standard gauge block when the A axis is between 90 and 0 degree and the B axis is between 0 degree, and recording the Y-direction coordinate Y of the machine tool 90 The method comprises the steps of carrying out a first treatment on the surface of the Measuring the Y-direction coordinate of the standard gauge block when the A axis is between 90 and 180 degrees and the B axis is between 180 degrees, and recording the Y-direction coordinate Y of the machine tool 90_180 。
In the preferred scheme of the machine tool origin error compensation method based on-machine detection, in the step 5, the coordinates of each direction of the cube are calculated, namely 0 degree of an A axis, 0 degree of a B axis and the coordinate of the Z-direction cube 0 ＝Z 0 -L plug -h gauge The method comprises the steps of carrying out a first treatment on the surface of the 0 degree on A axis, 0 degree on B axis and cube coordinates cube on Y direction 0 ＝Y 0 -D plug /2-h gauge The method comprises the steps of carrying out a first treatment on the surface of the Axis-90 degrees, axis B0 degree, Z direction cube coordinates cube Z 90 ＝Z 90 -L plug -h gauge The method comprises the steps of carrying out a first treatment on the surface of the Axis-90 degrees, B axis 0 degree, Y-direction cube coordinates cube Y 90 ＝Y 90 +D plug /2+h gauge The method comprises the steps of carrying out a first treatment on the surface of the Axis-90 degrees, axis B180 degrees, Y-direction cube coordinates cube Y 90_180 ＝Y 90_180 -D plug /2-h gauge 。
The invention has the beneficial effects that:
the invention provides a machine tool origin error compensation method based on machine tool on-machine detection data for the first time, successfully applies the related technology to origin error compensation of a plurality of five-axis numerical control machining centers of a company, and completes numerical control machining of various aviation parts such as a casing, a blade, a blisk and the like by numerical control equipment after error compensation, thereby filling the technical blank based on-machine measurement compensation of the machine tool origin.
The processing test shows that: the equipment measurement and processing precision is improved from original 0.05mm to 0.02mm, the machine tool occupies only 10min, and the processing precision is obviously improved. The method solves the problems that a machine tool cannot return to zero, old equipment origin drift is caused by equipment grating ruler damage, and the quality of parts is reduced due to the origin drift, and equipment with improved precision can be put into production again, so that the production capacity is improved.
The method solves the problems that a machine tool cannot return to zero, old equipment origin drift is caused by equipment grating ruler damage, the quality of parts is reduced due to the origin drift, and the like, and meanwhile, equipment with improved precision can be put into production again, so that the production capacity is improved, and the method has stronger general purpose type and practicability; the technology can be applied to origin measurement and error compensation of various numerical control equipment, remarkably improves the processing precision and processing capacity of the numerical control equipment in the aeroengine manufacturing industry, has stronger general type and practicability, and creates huge economic benefits while improving core innovation capacity and research and development efficiency for enterprises.
Drawings
FIG. 1 is a flow chart of a machine tool origin error compensation method based on-machine detection;
FIG. 2 is a schematic diagram of a preparation tool according to the present invention;
wherein: (a) Is a gauge block, h gauge The height of the standard gauge block; (b) Is a cube, H cubic The height of the cube; (c) is a standard sphere for calibrating on-machine measurement accuracy; (d) Is a standard core rod L plug For the length of the core rod, D plug Is the diameter of the core rod; (e) is a probe head and a probe;
FIG. 3 is a schematic diagram of a standard ball measurement;
(a) planning point positions and path planning for standard ball measurement, (b) numerical control program for standard ball measurement, and (c) on-machine measurement result for standard ball;
FIG. 4 is a standard ball measurement accuracy analysis;
(a) is the first measurement accuracy analysis result of the standard ball, (b) is the measurement accuracy analysis result after the first compensation of the standard ball, and (c) is the accuracy analysis result after the final compensation of the standard ball;
FIG. 5 is a schematic diagram of the measurement standard block in each direction;
(a) The Z-direction coordinate Z of the standard block is 0 degree on the A axis and 0 degree on the B axis 0 ；
(b) 0 degree of the A axis and 0 degree of the B axis are the Y-direction coordinate Y of the standard block 0 ；
(c) Z-direction coordinate Z of 0-degree standard block of axis A to 90 degrees 90 ；
(d) The Y-direction coordinate Y of the 0-degree standard block of the B axis is between the A axis and 90 degrees 90 ；
(e) The Y-direction coordinate Y of the standard block is between the A axis and 90 degrees and between the B axis and 180 degrees 90_180 。
Detailed Description
The invention adopts a technical means for calculating the original point error of the machine tool based on the on-machine measurement result, and the original point precision of the machine tool is converged through iteration so as to further compensate the machining error of the machine tool caused by the original point offset, and the related technology is successfully applied to the original point error calculation and compensation of a plurality of five-axis numerical control machining centers of a company; this patent takes a company's machine tools of multiple models as an example, and the invention is further described with reference to fig. 1-5 and the implementation process.
1) Measurement preparation
As shown in fig. 2, 1 spindle mandrel, 1 cube, 1 standard block, 1 RMP60 on-machine measuring probe, 1 probe with 200mm length, and 1 standard sphere with 25mm diameter are prepared; the square and the standard ball are arranged on a turntable of the machine tool, and the probe and the measuring head are matched and arranged in a tool magazine of the machine tool;
wherein the length L of the spindle core rod plug = 299.875mm, diameter D plug = 50.006mm; cube height H cubic = 180.0018mm; height h of standard gauge block gauge ＝50mm；
2) Completion of standard ball detection
Aiming at a D25 standard ball, a 3-axis measurement program of 25-point covered hemispheres is compiled, a measuring head and a probe are called out from a tool library of a machine tool, and on-machine measurement of the standard ball is completed under the reference of the machine tool; fig. 3 (a) is a standard ball measurement point position plan, fig. 2 (b) is an original measurement program, and fig. 2 (c) is a measurement result;
3) Complete standard ball calibration and analysis
As shown in fig. 4, the measured standard ball data is compared with the theoretical standard ball data, and the eccentricity value of the standard ball measured data is calculated, as shown in fig. 4 (a); wherein, the X-direction eccentric is-0.0003 mm, the Y-direction eccentric is-0.0034 mm, and the Z-direction eccentric is 0.2685mm;
4) Standard ball measuring accuracy judgment
The measurement error of the standard ball exceeds 0.01, the calculated eccentric value is compensated into the measurement standard of the standard ball of the machine tool, and the measurement is re-performed as shown in fig. 4; in FIG. 4 (b), the X-direction eccentricity is 0.1345mm, the Y-direction eccentricity is-0.0023 mm, and the Z-direction eccentricity is 0.0188mm; in FIG. 4 (c), the X-direction eccentric is-0.0014 mm, the Y-direction eccentric is-0.0036 mm, and the Z-direction eccentric is 0.0015mm, at this time, the measurement accuracy reaches 0.01mm, and the current measurement accuracy meets the on-machine measurement requirement;
5) Finish the measurement of standard gauge block in all directions
And (3) calling out a standard core rod from a tool library of the machine tool to finish measurement of the standard gauge block in five directions:
measuring Z-direction coordinate Z of standard gauge block when A axis is 0 degree and B axis is 0 degree 0 = 380.4969mm; measuring Y-direction coordinate Y of standard block at 0 degree of A axis and 0 degree of B axis 0 = 204.7397mm; measuring Z-direction coordinate Z of standard gauge block when A axis is 90 degrees and B axis is 0 degrees 90 = 479.773mm; measuring the Y-direction coordinate Y of the standard gauge block when the A axis is between 90 degrees and the B axis is 0 degree 90 -105.7643mm; measuring the Y-direction coordinate Y of the standard gauge block when the A axis is between 90 degrees and the B axis is 180 degrees 90_180 ＝105.438mm；
Calculating coordinates of each direction of the cube according to the process described in the step 5:
CubicZ 0 ＝Z 0 -L plug -h gauge ＝30.6219mm
CubicY 0 ＝Y 0 -D plug /2-h gauge ＝129.7367mm
CubicZ 90 ＝Z 90 -L plug -h gauge ＝129.898mm
CubicY 90 ＝Y 90 +D plug /2+h gauge ＝-30.7613mm
CubicY 90_180 ＝Y 90_180 -D plug /2-h gauge ＝30.435mm
6) Calculating machine tool origin error
Side X of measuring machine tool workbench 0 = -105.5795mm, measuring the same position X after 180 degrees rotation of the machine table 180 ＝105.6492mm；
According to the calculation process of step 6 in the claimsCalculating machine tool X-direction error e x Error e in Y direction y Z-direction error e z Distance l from axis A to axis B A_B Distance Dis from table to A-axis A_Stage ；
Calculating the distance from the workbench to the A axis according to the coordinate values:
Dis A_Stage ＝(CubicY 0 -CubicY 90 -2*H cubic -CubicZ 0 +CubicZ 90 )/2＝-50.1148mm
distance of axis a to axis B:
l A_B ＝e y -(CubicY 90 +CubicY 90_180 )/2＝0.0128mm
machine tool X-direction error:
e x ＝-(X 0 +X 180 )/2＝0.03485mm
machine tool Y-direction error:
e y ＝CubicY 0 -Dis A_Stage -H cubic ＝-0.15035mm
machine tool Z error:
e z ＝CubicZ 0 -Dis Cubic_B ＝0.01095mm
wherein, the distance from the front of the cube to the center of the B axis:
Dis Cubic_B ＝e y -CubicY 90 ＝30.61095mm
7) Machine tool origin offset determination
Calculated e x ，e y ，e z Above 0.03, x is calculated according to step 7 0 `、y 0 `、z 0 And (3) the method. First, the distance x from the original point of the machine tool to the grating ruler is recorded 0 、y 0 、z 0 For (434.875, 257.675, 438.487):
x 0 `＝x 0 +e x ＝434.875+0.03485＝434.90985mm
y 0 `＝y 0 +e y ＝257.675+(-0.15035)＝257.52465mm
z 0 `＝z 0 +e z ＝438.487+0.01095＝438.49795mm
moving the machine tool to (x) 0 `、y 0 `、z 0 ' re-write to (x) 0 、y 0 、z 0 ) Setting (434.875, 257.675, 438.487) to recalculate the origin and compensate for errors according to steps 5, 6, 7 of the claims; the origin offset phenomenon of the machine tool after compensation is obviously improved, and the error can be controlled within 0.03 mm; then, the origin calculation and compensation were performed on other machine tools of the same model, and the statistics are shown in table 1 below.
TABLE 1
8) Machine tool power-off restarting
Powering off the machine tool, restarting the machine tool to ensure that compensation is effective;
9) Standard ball calibration and analysis
After calibration, the triaxial measurement precision of the standard sphere is converged to 0.01mm;
10 Five-axis detection of standard ball
Five-axis detection is carried out on the standard ball, the maximum error is 0.026mm, and the processing precision requirement is met;
11 Outputting machine tool origin
Outputting the machine tool origin, and finishing the offset compensation of the machine tool origin.
Claims (1)
1. A machine tool origin error compensation method based on-machine detection is characterized by comprising the following steps: the method comprises the following steps:
step 1, measurement preparation, namely preparing 1 spindle core rod, 1 cube, 1 standard gauge block, 1 measuring head for on-machine measurement, 1 probe and 1 standard ball;
the cube and the standard ball are arranged on a turntable of the machine tool, and the probe and the measuring head are matched and arranged in a tool magazine of the machine tool;
step 2, finishing standard ball detection, namely, aiming at a D25 standard ball, compiling a 25-point 3-axis measurement program for covering a hemispherical surface, calling a measuring head and a probe from a tool library of a machine tool, and finishing on-machine measurement of the standard ball under the reference of the machine tool;
step 3, standard ball calibration and analysis are completed, namely the measured standard ball data are compared with theoretical standard ball data, and the eccentric value of the standard ball measured data is calculated;
step 4, judging the measurement precision of the standard ball; error of measurement when standard balle 1 >0.01 Compensating the calculated eccentric value into a standard ball measurement standard of the machine tool, executing the step 2, otherwise, executing the step 5;
step 5, finishing measurement of the standard gauge block in all directions, and calculating machine tool coordinates of the square block in all directions;
step 6, finishing the calculation of the origin error of the machine tool;
first, the side surface X of the machine tool table is measured 0 Measuring the same position X after the machine tool workbench rotates 180 degrees 180 Calculating the X-direction error of the machine tool according to the basic data prepared by machine tool measurement and the coordinates of the cube in each directione x Y-direction errore y Z-direction errore z Distance from axis A to axis Bl A_B Distance from table to A-axisDis A_Stage ；
Calculating the distance from the workbench to the A axis according to the coordinate values
Dis A_Stage =( CubicY 0 - CubicY 90 -2*H cubic - CubicZ 0 + CubicZ 90 )/2
Distance from axis A to axis B
l A_B =e y -（CubicY 90 + CubicY 90_180 ）/2
Machine tool X-direction error
e x =-( X 0 + X 180 )/2
Machine tool Y-direction error
e y = CubicY 0 -Dis A_Stage -H cubic
Z-direction error of machine tool
e z = CubicZ 0 -Dis Cubic_B ； wherein ,Dis Cubic_B the distance from the front of the cube to the center of the B axis,Dis Cubic_B = e y - CubicY 90 ；
step 7, judging the origin offset of the machine tool;
when calculatede x ，e y ，e z Beyond 0.03, the machine tool is moved tox 0 `、y 0 `、z 0 Resetting and executing the step 5;
when calculatede x ，e y ，e z And when the temperature is less than or equal to 0.03, executing the step 8; wherein the method comprises the steps ofx 0 、y 0 、z 0 For the distance from the original coordinate point of the machine tool to the grating,x 0 `= x 0 +e x 、y 0 `= y 0 + e y 、z 0 `= z 0 +e z ；
step 8, restarting the machine tool after power failure, and ensuring that the reset machine tool coordinates are effective;
step 9, standard ball calibration and analysis, the three-axis measurement precision of the standard ball is converged to 0.01mm;
step 10, standard ball five-axis detection, analysis of measurement accuracy, whene 3 >Executing the step 5 when the thickness is 0.03mm, otherwise executing the step 11;
step 11, outputting an origin of a machine tool;
in step 1, the spindle core rod in the preparation for measurement is a lengthL plug Diameter ofD plug Is a core rod of (a);
the cubic block in the preparation for measurement refers to the height ofH cubic Is a cubic block of (2);
the standard gauge block in the preparation of measurement is of the height ofh gauge Is a standard gauge of (2);
in step 5, the standard gauge block is detected in all directions, namely a standard core rod is called out from a tool library of a machine tool, and 5-direction measurement is completed: namely, when the A axis is 0 degree and the B axis is 0 degree, the Z-direction coordinate of the standard gauge block is measured, and the Z-direction coordinate Z of the machine tool is recorded 0 The method comprises the steps of carrying out a first treatment on the surface of the Measuring the Y-direction coordinate of the standard gauge block when the A axis is 0 degree and the B axis is 0 degree, and recording the Y-direction coordinate Y of the machine tool 0 The method comprises the steps of carrying out a first treatment on the surface of the Measuring Z-direction coordinate of the standard gauge block when the angle of the axis A is between 90 degrees and 0 degree of the axis B, and recording Z-direction coordinate Z of the machine tool 90 The method comprises the steps of carrying out a first treatment on the surface of the Measuring the Y-direction coordinate of the standard gauge block when the A axis is between 90 and 0 degree and the B axis is between 0 degree, and recording the Y-direction coordinate Y of the machine tool 90 The method comprises the steps of carrying out a first treatment on the surface of the Measuring the Y-direction coordinate of the standard gauge block when the A axis is between 90 and 180 degrees and the B axis is between 180 degrees, and recording the Y-direction coordinate Y of the machine tool 90_180 ；
In step 5, the coordinates of each direction of the cube are calculated to be 0 degree on the A axis, 0 degree on the B axis and the coordinates of the Z-direction cubeCubicZ 0 = Z 0 -L plug -h gauge The method comprises the steps of carrying out a first treatment on the surface of the 0 degree of A axis, 0 degree of B axis and Y-direction cube coordinatesCubicY 0 = Y 0 -D plug /2- h gauge The method comprises the steps of carrying out a first treatment on the surface of the Axis-90 degrees, axis-0 degree, Z-direction cube coordinatesCubicZ 90 = Z 90 - L plug -h gauge The method comprises the steps of carrying out a first treatment on the surface of the Axis-90 degrees, axis-0 degree, Y-direction cube coordinatesCubicY 90 = Y 90 + D plug /2+ h gauge The method comprises the steps of carrying out a first treatment on the surface of the Axis-90 degrees, axis-180 degrees, Y-direction cube coordinatesCubicY 90_180 = Y 90_180 - D plug /2-h gauge 。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253919.8A CN113985813B (en) | 2021-10-27 | 2021-10-27 | Machine tool origin error compensation method based on-machine detection |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111253919.8A CN113985813B (en) | 2021-10-27 | 2021-10-27 | Machine tool origin error compensation method based on-machine detection |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113985813A CN113985813A (en) | 2022-01-28 |
| CN113985813B true CN113985813B (en) | 2023-09-01 |
Family
ID=79742274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111253919.8A Active CN113985813B (en) | 2021-10-27 | 2021-10-27 | Machine tool origin error compensation method based on-machine detection |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113985813B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114789363A (en) * | 2022-05-11 | 2022-07-26 | 上汽通用五菱汽车股份有限公司 | Compensation method and system for improving machining center precision and storage medium |
| CN116394068B (en) * | 2023-06-09 | 2023-09-29 | 成都飞机工业（集团）有限责任公司 | Method for automatically measuring AC axis zero positioning precision of five-axis linkage numerical control machine tool |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105382631A (en) * | 2015-12-15 | 2016-03-09 | 福建工程学院 | Equipment and method for detecting error of rotating shaft of five-axis numerical control machine tool |
| CN105643362A (en) * | 2014-11-13 | 2016-06-08 | 沈阳高精数控智能技术股份有限公司 | Five-axis machine tool measuring method based on AxiSet |
| CN107315391A (en) * | 2017-07-18 | 2017-11-03 | 广西科技大学 | A kind of pretravel error compensating method of Digit Control Machine Tool on-line checking |
| CN108227622A (en) * | 2018-01-10 | 2018-06-29 | 福州大学 | Lathe geometric error measuring method and system based on one-dimensional probe and standard ball |
| CN111060025A (en) * | 2019-12-23 | 2020-04-24 | 上海交通大学 | Pose calibration method and system for in-situ mounting line laser sensor of five-axis machine tool |
| WO2020118970A1 (en) * | 2018-12-10 | 2020-06-18 | 华东理工大学 | On-machine inspection and compensation method employing point clouds and applied to complex surface processing |
| CN112846936A (en) * | 2020-12-31 | 2021-05-28 | 广州铁路职业技术学院（广州铁路机械学校） | Method for calibrating accuracy of trigger type measuring head in on-machine detection |
-
2021
- 2021-10-27 CN CN202111253919.8A patent/CN113985813B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105643362A (en) * | 2014-11-13 | 2016-06-08 | 沈阳高精数控智能技术股份有限公司 | Five-axis machine tool measuring method based on AxiSet |
| CN105382631A (en) * | 2015-12-15 | 2016-03-09 | 福建工程学院 | Equipment and method for detecting error of rotating shaft of five-axis numerical control machine tool |
| CN107315391A (en) * | 2017-07-18 | 2017-11-03 | 广西科技大学 | A kind of pretravel error compensating method of Digit Control Machine Tool on-line checking |
| CN108227622A (en) * | 2018-01-10 | 2018-06-29 | 福州大学 | Lathe geometric error measuring method and system based on one-dimensional probe and standard ball |
| WO2020118970A1 (en) * | 2018-12-10 | 2020-06-18 | 华东理工大学 | On-machine inspection and compensation method employing point clouds and applied to complex surface processing |
| CN111060025A (en) * | 2019-12-23 | 2020-04-24 | 上海交通大学 | Pose calibration method and system for in-situ mounting line laser sensor of five-axis machine tool |
| CN112846936A (en) * | 2020-12-31 | 2021-05-28 | 广州铁路职业技术学院（广州铁路机械学校） | Method for calibrating accuracy of trigger type measuring head in on-machine detection |
Non-Patent Citations (1)
| Title |
|---|
| 复杂曲面零件加工精度的原位检测误差补偿方法;高健;陈岳坪;邓海祥;杨泽鹏;陈新;;机械工程学报(第19期);137-147 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113985813A (en) | 2022-01-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN109623656B (en) | Mobile double-robot cooperative polishing device and method based on thickness online detection | |
| CN113985813B (en) | Machine tool origin error compensation method based on-machine detection | |
| CN102927952B (en) | Method for detecting diameter of outer wall of tapered case of aviation engine on line | |
| CN102001021A (en) | Method for measuring geometric error parameter value of rotary oscillation axis of five-axis linkage numerical control machine tool | |
| WO2013181884A1 (en) | Online and in situ measurement method of single articulated arm and device | |
| CN105252342B (en) | Detect the detection test specimen and detection method of five-axle number control machine tool Machining of Curved Surface ability | |
| WO2021189298A1 (en) | Swing head position error detection and identification method for ca double-swing-head five-axis numerically controlled machine tool | |
| CN110539020B (en) | Precision self-diagnosis method for double five-axis mirror milling machine tool | |
| CN108469782A (en) | A kind of installation error discrimination method based on rotary shaft composition error measured value | |
| CN106406237B (en) | A kind of processing method with free form surface metal parts | |
| CN105397549A (en) | Zero searching method of machine tool machined hole surface workpiece | |
| JP2006517151A (en) | Method and apparatus for manufacturing service blades | |
| CN108817488A (en) | The double column lathe accuracy calibrating methods of the combined numerically controlled milling of integral blade disk | |
| CN113814673A (en) | Geometric self-adaptive machining method for titanium alloy blisk welding part of large fan | |
| CN112757046A (en) | Five-axis machine tool online measurement and compensation processing method for free-form surface of thin-wall jewelry | |
| CN113917888B (en) | Machining precision improving method based on fixed angular calibration and compensation | |
| CN111077849B (en) | Self-adaptive machining method for integral impeller of five-axis numerical control machine tool | |
| CN113778018B (en) | R-test-based five-axis machine tool shaft vector error measurement method | |
| CN111069642A (en) | Three-dimensional space inclined hole machining process | |
| Du et al. | Modeling and compensation of comprehensive errors for thin-walled parts machining based on on-machine measurement | |
| CN201833217U (en) | Three-dimensional positioning apparatus | |
| CN112757307B (en) | Equipment and method for machining ternary impeller blade welding groove by robot | |
| CN116810483A (en) | Five-axis machine tool rotating shaft geometric error identification method based on machining test | |
| CN114749993A (en) | Method for controlling five-axis swing angle error in five-axis machining | |
| CN115683027A (en) | Gear die finish machining datum alignment method based on-machine measurement |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |