CN106695459A - Online measurement hub compensation path generating method - Google Patents
Online measurement hub compensation path generating method Download PDFInfo
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- CN106695459A CN106695459A CN201611066282.0A CN201611066282A CN106695459A CN 106695459 A CN106695459 A CN 106695459A CN 201611066282 A CN201611066282 A CN 201611066282A CN 106695459 A CN106695459 A CN 106695459A
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- wheel hub
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q23/00—Arrangements for compensating for irregularities or wear, e.g. of ways, of setting mechanisms
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
An online measurement hub compensation path generating method includes the following steps that (1) a hub assisting line and assisting points are generated by utilizing a hub model; (2) a measurement data file is generated, specifically, (2.1) measurement points in different directions are created through the assisting line and the assisting points, the measurement points include whole points used for whole hub compensation and window points used for local window compensation, and the whole points and the window points are obtained by creating the measurement points on a curve; (2.2) according to hub characteristics, measurement points of the rest of windows are created, and circumferential marshalling is conducted; (3) all the created measurement points are ranked in an optimized mode, and a path suitable for measurement is generated; and (4) according to measurement options, measurement theoretical data are calculated, and the measurement path is output and finally guided into a machine tool control system. According to the online measurement hub compensation path generating method, manual ranking is not needed, manual calculation is replaced with automatic calculation for compensation values, the using difficulty and calculation amount are reduced, manual input of theoretical compensation values is not needed, and efficiency is improved.
Description
Technical field
The present invention relates to wheel hub manufacture field, and in particular to a kind of on-line measurement wheel hub compensates path generating method.
Background technology
In the evolution of automobile industry, personalized processing market has become powerful support.In recent years, it is more and more
Wheel hub production firm, all there is the Production requirement of wheel hub processing, and a series of problems present in wheel hub process is necessary
Solved by line Measurement Technique.Line Measurement Technique is that a kind of work in-process realizes that workpiece processing quality is examined automatically in the heart
The technology of survey, the technology can carry out real-Time Compensation to the workpiece processed, and to improve efficiency of handing over, reduce deviation accumulation, improve and add
Working medium amount.
Traditional line Measurement Technique is applied in wheel hub compensation, it is necessary first to measurement point is created one by one, when wheel hub window
When more, work is repeated and cumbersome, in addition it is also necessary to measurement point is ranked up and outgoing route manually, when carrying out wheel hub and compensating,
Need manually to calculate each window and overall theoretical com-pensation value, theoretical value is finally manually entered software, to realize and reality
Border offset is compared and compensates to machining path, the computationally intensive of this mode, calculating complexity and easily error.
The content of the invention
It is an object of the invention to be directed to above-mentioned the problems of the prior art, there is provided a kind of on-line measurement wheel hub compensates path
Generation method, can reduce user's operation, reduce error rate, easy to operate, and then improve operating efficiency.
To achieve these goals, the technical solution adopted by the present invention is comprised the following steps：
1) using wheel hub model generation wheel hub boost line and auxiliary magnet；
Wheel hub boost line intersects generation with wheel hub model by plane, and auxiliary magnet needs to carry out the position of wheel hub detection for user
Point；
2) measurement data file is generated；
2.1) by boost line and auxiliary magnet, the measurement point of different directions is created, the measurement point includes being used for Integral hub
The overall point of compensation and the window point compensated for local window；Overall point is with window point by creating measurement point on curve
Obtain；
2.2) according to hubless feature, the measurement point of remaining window is created, and carry out circumference permutation；
3) measurement point of all establishments is optimized into sequence, generation is adapted to the path of measurement；
4) according to measurement option, measure theory data are calculated, and exports measuring route, finally import Machine-Tool Control system
System.
Described step 2.1) in calculate current pickup point position and current curves normal direction respectively as survey for overall point
Measure the positional information and directional information of point；Z-direction measurement point in window point is using the position of current auxiliary magnet as measurement point position
Information, using Z axis negative direction as detection direction.
Described step 2.2) according to window number, local window point and Z-direction measurement point are carried out into circumference permutation, Z-direction is surveyed
Amount point is used to calculate the height value of the point.
The step 3) in be adapted to measurement path meet following condition：A. road is generated on the basis of not colliding
Footpath；B. the time of measuring in generation path is most short；C. measurement point is divided into central point and use for calculating entirety or window center
In the angle points for calculating entirety or window angle, measuring sequence follows angle points after first central point, first overall point rear hatch point.
Described Optimal scheduling includes：
A. measuring sequence is arranged according to integral central point, overall angle points, window center point, window angle points, Z-direction measurement point
Row；
B. it is ranked up according to beeline between the measurement point of each same type；
C. Z-direction cutter lifting is carried out according to safe altitude between each different types of measurement point, is not collided with wheel hub；
D. scanned for by beeline between each different types of measurement point, find the window nearest with it and nearest
Measurement point, as the window and measurement point of next connection；
E. integral central point, overall angle points all carry out Z-direction cutter lifting according to safe altitude；
F. in local window point, the same window point directly carries out straight line connection, improves measurement efficiency；
G. straight line connection is directly carried out between the Z-direction measurement point of window.
Described measure theory data include integral central, overall angle, window center, window angle and window Z values.
Integral central：By four integral central points, the center of circle where calculating this four points, as in its theoretical entirety
The heart；
Overall angle：The intraoral overall angle points of connection schoolmate, calculate their midpoint, and straight line is done at two midpoints of connection, should
Angle between straight line and X-axis is used as its theoretical entirety angle；
Window center：Using the window center point of each window as the window theoretical window center；
Window angle：The window angle points in each window are connected, their midpoint is connected with origin and is made straight line, this is straight
The angle of line and X-axis is used as its theoretical window angle；
Window Z values：The average Z values of each window Z-direction measurement point are calculated, as its theoretical window Z value.
Compared with prior art, the present invention has following beneficial effect：Using wizard-like operator scheme, guide and help
User carries out path establishment, according to window number, automatically creates measurement point, it is possible to increase cloth point efficiency, the survey to all establishments
Amount point carries out Optimal scheduling, and generation is adapted to the path of measurement, without artificial sequence, artificial meter is replaced by automatic offset value calculation
Calculate, reduce using difficulty and amount of calculation, without being manually entered theoretical com-pensation value, reduce artificial participation, reduce error rate.
The present invention ensure that the security of detection on the basis of detection efficient is improved, and improve efficiency, reduce the operating time.
Brief description of the drawings
Fig. 1 wheel hubs boost line generates schematic diagram；
Fig. 2 entirety measurement points create schematic diagram；
Fig. 3 window measurements point creates schematic diagram；
8 window measurement point schematic diagram after Fig. 4 circumference permutations；
Fig. 5 measuring routes generate schematic diagram.
Specific embodiment
The present invention is described in further detail below in conjunction with the accompanying drawings.
On-line measurement wheel hub compensation path generating method of the present invention is comprised the following steps：
1st, referring to Fig. 1, wheel hub boost line and auxiliary magnet are generated using wheel hub model.Boost line is by a sufficiently large plane
The generation intersected with wheel hub model, auxiliary magnet needs to carry out the location point of wheel hub detection for user.
2nd, referring to Fig. 2-4, operated by wheel hub special function wizard-like, generate measurement data file, comprised the following steps：
1) by boost line and auxiliary magnet, the measurement point of different directions is created.
Measurement point is divided into overall point and window point, integrally puts for Integral hub compensation, and window point is mended for local window
Repay.Figure midpoint 1-4 is integral central point, for calculating Integral hub center；5-8 is overall angle points, whole for calculating wheel hub
Body angle.
Each wheel hub entirety measurement point is obtained by way of creating measurement point on curve, and current pickup point position is calculated respectively
Put positional information and directional information as measurement point with current curves normal direction.
Point 9-11 is local window point, and its midpoint 9-10 is window angle points, for calculation window angle；Point 11 is window
Central point, uses as window center；Point 12 is Z-direction point, the height value for calculating the point.
Each wheel hub window measurement point is obtained according to measurement point mode is created on curve；Z-direction measurement point is with current auxiliary magnet
Position as measurement point positional information, using Z axis negative direction as its detection direction.
2) according to hubless feature, the measurement point data of remaining window is created.
According to window number, local window point and window Z-direction point are carried out into circumference permutation, Fig. 4 show window point and
Window Z-direction measurement point carries out 8 arrays of window.
3) referring to Fig. 5, the measurement point string of establishment is optimized into sequence, generation is adapted to the measuring route of wheel hub, is being improved
On the basis of detection efficient, it is ensured that the security of detection, will not collide.
Optimal scheduling includes：
A. according to the actual requirements, measuring sequence is according to integral central point, overall angle points, window center point, window angle
The order arrangement of point, window Z-direction point；It is ranked up with beeline between each measurement point；
B. it is ranked up according to beeline between the measurement point of each same type, to improve detection efficient；
C. Z-direction cutter lifting is carried out according to safe altitude between each different types of measurement point, is not collided with wheel hub；
D. scanned for by beeline between each different types of measurement point, find the window nearest with it and nearest
Measurement point, as the window and measurement point of next connection；
E. integral central point, overall angle points all carry out Z-direction cutter lifting according to safe altitude；
F. in local window point, the same window point directly carries out straight line connection, improves measurement efficiency；
G. straight line connection is directly carried out between window Z-direction point, measurement efficiency is improved；
Suitable path must is fulfilled for：
A. generation path must is fulfilled for security, and path is generated on the basis of not colliding；
B. generation path must as far as possible shorten time of measuring, improve measurement efficiency；
C. the measuring sequence of measurement point must is fulfilled for angle behind first center, first the order of entirety rear hatch；
4) according to measurement option, computation and measurement gross data, and measuring route is exported.
Gross data includes following：
Integral central：By four integral central points, the center of circle where calculating this four points, as in its theoretical entirety
The heart；
Overall angle：The intraoral overall angle points of connection schoolmate, calculate its midpoint, and straight line is done at two midpoints of connection, the straight line
With X-axis angle as its theoretical entirety angle；
Window center：The window center point of each window, as the theoretical window center of the window；
Window angle：In each window, its window angle points is connected, its midpoint is connected with origin and makees straight line, the straight line
With the angle of X-axis as its theoretical window angle；
Window Z：The average Z values of each window Z-direction point, as its theoretical window Z value；
3rd, machine tool system is imported the file into, measuring route and measure theory data is added automatically according to file, without people
Work is changed.
The present invention uses the operator scheme of wizard-like, for guiding user to carry out path editing, measurement point string intelligent optimization
Sequence, using theoretical com-pensation value calculating method, output file data form is seamlessly connected with lathe software, the calculating side for using
Method includes measurement point creation method, measurement point array approach, measurement point optimization sequencing method and measure theory value calculating method.
The present invention replaces artificial calculating without manually sorting with automatic offset value calculation, reduces using difficulty and amount of calculation, without people
Work input hypothesis offset, reduces artificial participation, it is to avoid error rate, improves efficiency, reduces the operating time.
Claims (7)
1. a kind of on-line measurement wheel hub compensates path generating method, it is characterised in that comprise the following steps：
1) using wheel hub model generation wheel hub boost line and auxiliary magnet；
Wheel hub boost line intersects generation with wheel hub model by plane, and auxiliary magnet needs to carry out the location point of wheel hub detection for user；
2) measurement data file is generated；
2.1) by boost line and auxiliary magnet, the measurement point of different directions is created, the measurement point is included for Integral hub compensation
Overall point and the window point for local window compensation；Overall point is obtained with window point by creating measurement point on curve
Take；
2.2) according to hubless feature, the measurement point of remaining window is created, and carry out circumference permutation；
3) measurement point of all establishments is optimized into sequence, generation is adapted to the path of measurement；
4) according to measurement option, measure theory data are calculated, and exports measuring route, finally import machine tool control system.
2. on-line measurement wheel hub according to claim 1 compensates path generating method, it is characterised in that：Step 2.1) in it is right
The positional information and directional information of current pickup point position and current curves normal direction as measurement point are calculated respectively in integrally point；Window
Z-direction measurement point in mouthful point using the position of current auxiliary magnet as measurement point positional information, using Z axis negative direction as detection side
To.
3. on-line measurement wheel hub according to claim 1 compensates path generating method, it is characterised in that：Step 2.2) basis
Window number, circumference permutation is carried out by local window point and Z-direction measurement point.
4. on-line measurement wheel hub according to claim 3 compensates path generating method, it is characterised in that the step 3) in
The path for being adapted to measurement meets following condition：A. path is generated on the basis of not colliding；B. during the measurement in generation path
Between it is most short；C. measurement point is divided into central point for calculating entirety or window center and for calculating entirety or window angle
Angle points, measuring sequence follows angle points after first central point, first overall point rear hatch point.
5. on-line measurement wheel hub according to claim 4 compensates path generating method, it is characterised in that Optimal scheduling bag
Include：
A. measuring sequence is arranged according to integral central point, overall angle points, window center point, window angle points, Z-direction measurement point；
B. it is ranked up according to beeline between the measurement point of each same type；
C. Z-direction cutter lifting is carried out according to safe altitude between each different types of measurement point, is not collided with wheel hub；
D. scanned for by beeline between each different types of measurement point, find window and the nearest measurement nearest with it
Point, as the window and measurement point of next connection；
E. integral central point, overall angle points all carry out Z-direction cutter lifting according to safe altitude；
F. in local window point, the same window point directly carries out straight line connection, improves measurement efficiency；
G. straight line connection is directly carried out between the Z-direction measurement point of window.
6. the on-line measurement wheel hub according to claim 4 or 5 compensates path generating method, it is characterised in that measure theory
Data include integral central, overall angle, window center, window angle and window Z values.
7. on-line measurement wheel hub according to claim 6 compensates path generating method, it is characterised in that：
Integral central：By four integral central points, the center of circle where calculating this four points, as its theoretical integral central；
Overall angle：The intraoral overall angle points of connection schoolmate, calculate their midpoint, and straight line is done at two midpoints of connection, the straight line
Angle between X-axis is used as its theoretical entirety angle；
Window center：Using the window center point of each window as the window theoretical window center；
Window angle：Connect the window angle points in each window, their midpoint be connected with origin and make straight line, the straight line with
The angle of X-axis is used as its theoretical window angle；
Window Z values：The average Z values of each window Z-direction measurement point are calculated, as its theoretical window Z value.
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| CN201611066282.0A CN106695459B (en) | 2016-11-28 | 2016-11-28 | A kind of on-line measurement wheel hub compensation path generating method |
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| CN201611066282.0A CN106695459B (en) | 2016-11-28 | 2016-11-28 | A kind of on-line measurement wheel hub compensation path generating method |
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| JP2004237438A (en) * | 2003-01-16 | 2004-08-26 | Ngk Spark Plug Co Ltd | Throw away tip and cutting tool |
| CN101187807A (en) * | 2007-07-20 | 2008-05-28 | 天津大学 | Diamond super precision lathe free curved surface processing path generation method |
| CN101246365A (en) * | 2007-07-20 | 2008-08-20 | 天津大学 | Ultra-precise turning method with diamond knife tool hook angle compensation |
| CN102554705A (en) * | 2012-02-28 | 2012-07-11 | 天津微纳制造技术有限公司 | Compensation machining method for optical free-form surfaces |
| CN102554701A (en) * | 2012-03-07 | 2012-07-11 | 天津大学 | Method and device for compensating indexing error of machine tool |
| CN104308663A (en) * | 2014-10-27 | 2015-01-28 | 湘潭大学 | Method for virtually measuring machining error of profile of cambered-surface cam |
-
2016
- 2016-11-28 CN CN201611066282.0A patent/CN106695459B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004237438A (en) * | 2003-01-16 | 2004-08-26 | Ngk Spark Plug Co Ltd | Throw away tip and cutting tool |
| CN101187807A (en) * | 2007-07-20 | 2008-05-28 | 天津大学 | Diamond super precision lathe free curved surface processing path generation method |
| CN101246365A (en) * | 2007-07-20 | 2008-08-20 | 天津大学 | Ultra-precise turning method with diamond knife tool hook angle compensation |
| CN102554705A (en) * | 2012-02-28 | 2012-07-11 | 天津微纳制造技术有限公司 | Compensation machining method for optical free-form surfaces |
| CN102554701A (en) * | 2012-03-07 | 2012-07-11 | 天津大学 | Method and device for compensating indexing error of machine tool |
| CN104308663A (en) * | 2014-10-27 | 2015-01-28 | 湘潭大学 | Method for virtually measuring machining error of profile of cambered-surface cam |
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