CN109725595A - Compensation method, processing method and the workpiece of the machining path of workpiece - Google Patents
Compensation method, processing method and the workpiece of the machining path of workpiece Download PDFInfo
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- CN109725595A CN109725595A CN201711044626.2A CN201711044626A CN109725595A CN 109725595 A CN109725595 A CN 109725595A CN 201711044626 A CN201711044626 A CN 201711044626A CN 109725595 A CN109725595 A CN 109725595A
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Abstract
The invention discloses a kind of compensation method of the machining path of workpiece, processing method and workpiece, compensation method is the following steps are included: S1, according to the geomery of the workpiece generate the first machining path；S2, using first machining path workpiece is processed；S3, sensing point on the detection workpiece data, to obtain the real data of the sensing point；S4, generate according to the anticipatory data of the real data and the sensing point offset data of the sensing point；S5, according to the offset data first machining path is compensated, to generate the second machining path.Result after the present invention can be processed according to the first machining path compensates machining path, no matter which factor final error is as caused by, the error can be corrected, it is deformed as caused by SERVO CONTROL, CAM function, machine tool accuracy, material deformation and algorithm fairing processing etc., it can be compensated, and then improve machining accuracy.
Description
Technical field
The present invention relates to work pieces process field, in particular to a kind of compensation method of the machining path of workpiece, processing method
And workpiece.
Background technique
Now with the continuous development of 3C (computer, communication and consumer electronics) industry, the requirement to product is higher and higher,
So the requirement to the machining accuracy and finish of workpiece is also higher and higher, and to reach best bright finish, it is necessary to model and plus
Work instructs smooth enough, also higher and higher to SERVO CONTROL and CAM (computer-aided manufacturing) functional requirement in this way.Influence processing
The factor of precision has the factors such as the precision of lathe itself, the control precision of controller and material deformation.Control precision there are also
Many algorithms are improved by the methods of self study, improvement control algolithm.Existing method is respectively from SERVO CONTROL, CAM function
Energy, machine tool accuracy, material deformation and algorithm fairing processing angularly carry out the improvement of machining accuracy, but when machining accuracy reaches
After to a certain extent, it is desirable to which being bound to difficulty from all angles raising again can be increasing, and improvement is limited and improvement cost is got over
Come higher.
Summary of the invention
The technical problem to be solved by the present invention is in order to overcome in the prior art respectively from SERVO CONTROL, CAM function, lathe
Increasing, improvement that precision, material deformation and algorithm fairing processing angularly carry out difficulty when the improvement of machining accuracy
Limited and higher and higher cost defect provides a kind of can compensate to original machining path to regenerate new processing
Compensation method, processing method and the workpiece of the machining path of the workpiece of path and then raising machining accuracy.
The present invention is to solve above-mentioned technical problem by following technical proposals:
The present invention provides a kind of compensation methodes of the machining path of workpiece, it is characterized in that, comprising the following steps:
S1, according to the geomery of the workpiece generate the first machining path；
S2, using first machining path workpiece is processed；
S3, sensing point on the detection workpiece data, to obtain the real data of the sensing point；
S4, generate according to the anticipatory data of the real data and the sensing point offset data of the sensing point；
S5, according to the offset data first machining path is compensated, to generate the second machining path.
In the present solution, step S1It is further that the first processing road is generated according to the curve form and size of the workpiece
Diameter.Workpiece is included the case where generating respectively after multiple faces to be processed independently generate the first machining path and compensation according to each face
From the second machining path.
In the present solution, the first machining path is machining path conventional in the prior art, the processing is used in the prior art
Path obtains finished product after processing to workpiece.The first machining path has been carried out in this programme to improve compensation, has generated second
Machining path can be improved machining accuracy when processing using the second machining path to subsequent same batch work-piece.
In the present solution, data detection is carried out for the workpiece after processing using the first machining path, to obtain processing
The real data one-to-one correspondence of real data afterwards, each sensing point has anticipatory data, according to the real data of each sensing point
The offset data for needing to compensate can be generated with anticipatory data, then the first machining path is repaired further according to offset data
Just, the second machining path is finally obtained.
In the present solution, being compensated according to the final result after the processing of the first machining path to machining path, so no matter
Which factor final error is as caused by, which can be corrected, as SERVO CONTROL, CAM function, machine tool accuracy,
It deforms, can be compensated caused by the factors such as material deformation and algorithm fairing processing.
Preferably, step S5The following steps are included:
S51, according to the offset data generate compensation curved surface；
S52, according to the compensation curved surface first machining path is compensated, to generate the second machining path.
In the present solution, compensation curved surface can be generated according to several offset datas, then the first machining path is corresponded to
Compensation curved surface is modified, and can generate the second machining path.
Preferably, step S51It is middle to use NURBS (Non-Uniform Rational B-Splines, non-uniform rational B sample
Item) surface methodology is to offset data progress interpolation calculation, to obtain the compensation curved surface.
Preferably, step S52The following steps are included:
S5201, find out the value of any point on first machining path on the compensation curved surface as correction value；
S5202, replace on first machining path using the correction value corresponding value and as second processing road
The value of corresponding points on diameter, to generate the second machining path.
In the present solution, the point on point and the second machining path on the first machining path corresponds, the first machining path
On value of the point on compensation curved surface be corresponding points on the second machining path value, i.e., using the value on compensation curved surface to first plus
Value on work path is modified to obtain the value on the second machining path.
Preferably, step S3It before further include that probe program, the probe journey are generated according to the geomery of the workpiece
Sequence is for setting several sensing points；
Step S3The middle data that the sensing point on the workpiece is detected using the probe program.
Preferably, the probe program is also used to calculate the anticipatory data of the sensing point.
Preferably, the probe program is macroprogram.
Preferably, the probe program the following steps are included:
T1, setting parameter；
T2, calculate according to the geomery of the parameter and the workpiece position and the probe direction of the sensing point.
In the present solution, can guarantee safety of the probe program in actual detection and accurate by the way that reasonable parameter is arranged
Property.
The present invention also provides a kind of processing methods of workpiece, it is characterized in that, using the machining path of workpiece above-mentioned
Compensation method generate second machining path workpiece is processed.
The present invention also provides a kind of workpiece, it is characterized in that, the workpiece is added using the processing method of workpiece above-mentioned
Work generates.
The positive effect of the present invention is that: the compensation method of the machining path of workpiece provided by the invention, processing side
Result after method and workpiece can be processed according to the first machining path compensates machining path, and no matter final error is in this way
As caused by which factor, which can be corrected, as SERVO CONTROL, CAM function, machine tool accuracy, material deformation with
And deformed caused by the factors such as algorithm fairing processing, it can be compensated.The present invention by being improved to the first machining path,
To generate the second machining path, processing essence is enabled to when processing using the second machining path to subsequent same batch work-piece
Degree improves an order of magnitude.
Detailed description of the invention
Fig. 1 is the flow chart of the compensation method of the machining path of the workpiece of the embodiment of the present invention 1.
Fig. 2 is the execution flow chart of 1 middle probe program of embodiment.
Specific embodiment
The present invention is further illustrated below by the mode of embodiment, but does not therefore limit the present invention to the reality
It applies among a range.
Embodiment 1
As shown in Figure 1, a kind of compensation method of the machining path of workpiece, comprising the following steps:
Step 101 generates probe program according to the geomery of workpiece, and the probe program is for setting several sensing points simultaneously
Calculate the anticipatory data of the sensing point；
Step 102 generates the first machining path according to the geomery of workpiece；
Step 103 processes the workpiece using first machining path；
Step 104, the data that the sensing point on the workpiece is detected using the probe program, to obtain the reality of sensing point
Border data；
Step 105, the offset data that the sensing point is generated according to the anticipatory data of the real data and sensing point；
Step 106 carries out interpolation calculation to the offset data using non-homogeneous nurbs surface method, bent to obtain compensation
Face；
Step 107 finds out value on the compensation curved surface of any point on the first machining path and as amendment
Value；
Step 108, replaced on first machining path using the correction value corresponding value and using the replaced value as
The value of corresponding points on second machining path, to generate the second machining path.
In the present embodiment, the probe program be macroprogram, as shown in Fig. 2, probe program the following steps are included:
Step 201, setting parameter；
Step 202, position and the probe direction that sensing point is calculated according to the geomery of the parameter and the workpiece.
In the present embodiment, setting parameter mainly sets the relevant parameter of the position of the point detected, to guarantee
Probe program can be carried out safe detection in actual detection.
In the present embodiment, the first machining path is machining path conventional in the prior art, and use should add in the prior art
Work path obtains finished product after processing to workpiece.The first machining path has been carried out in the present embodiment to improve compensation, has been generated
Second machining path can be improved machining accuracy when processing using the second machining path to subsequent same batch work-piece.
In the present embodiment, data detection is carried out for the workpiece after being processed using the first machining path, is added with obtaining
The real data one-to-one correspondence of real data after work, each sensing point has anticipatory data, according to the actual number of each sensing point
The offset data for needing to compensate can be generated according to anticipatory data, compensation curved surface can be generated according to several offset datas, so
The first machining path is corresponded to compensation curved surface afterwards to be modified, the second machining path can be generated.When specific amendment, first adds
Point on point and the second machining path on work path corresponds, and value of the point on the first machining path on compensation curved surface is
The value of corresponding points on second machining path is modified to obtain using the value on compensation curved surface to the value on the first machining path
Value on second machining path.
In the present embodiment, machining path is compensated according to the final result after the processing of the first machining path, such nothing
It is as caused by which factor by final error, which can be corrected, such as SERVO CONTROL, CAM function, lathe essence
It deforms, can be compensated caused by the factors such as degree, material deformation and algorithm fairing processing.
Embodiment 2
The processing method for present embodiments providing a kind of workpiece, the processing method use the processing road of the workpiece of embodiment 1
Second machining path that the compensation method of diameter generates processes the workpiece.
Embodiment 3
A kind of workpiece is present embodiments provided, which is processed using the processing method of the workpiece of embodiment 2 and generated.
It continues with through specific example, further illustrates technical solution of the present invention and technical effect.
Following steps can be used when being embodied using technical solution provided by the invention:
(1) according to the geomery of workpiece to be processed, probe program is generated.Assuming that the sensing point P of settingiIn three-dimensional coordinate
The value of x-axis and y-axis in system is expressed as (xi,yi), then sensing point PiIt is obtained in the value of z-axis by the first machining path, by meter
Sensing point after calculation can be expressed as Pi(xi, yi, zi)。
(2) workpiece is processed using processing program using the first machining path.
(3) after processing is completed, the workpiece processed is detected with the probe program generated in (1).
(4) compensation curved surface is generated according to the offset data obtained after detection, it is assumed that sensing point P after detectioniIn the z-axis direction
Offset be Ei, then can be by sensing point PiCorresponding offset data is expressed as Pi(xi, yi, Ei).According to these offset datas,
Interpolation calculation, available compensation curved surface, non-homogeneous nurbs surface interpolation are carried out by using non-homogeneous nurbs surface method
Calculation formula is as follows:
Wherein, n and m is sensing point PiThe number of point in x-axis and y-axis both direction, i.e., when being detected with probe
The number of the point detected in two directions.And u and w may be considered another coordinate system, give one (u, w) by above-mentioned
Formula is available one (x, y, z).
Pi,jIt is a coordinate points for control vertex, and Pi,jBelong to point range { Pi(xi, yi, zi)}.Here only because
It indicates convenient for formula, maps, it is possible to understand that are as follows: point range { Pi(xi, yi, zi), i is between [0, m*n], Pi,j=Pm*i+j
(xm*i+j, ym*i+j, zm*i+j), i.e. Pi,j{ Pi(xi, yi, zi) point be one-to-one.
Wherein, Wi,jFor weight factor, the parameter generally related or some characteristic areas with the distance between sensing point are needed
Weight factor processing is carried out, the weight factor takes 1 in this example.
Wherein, Bi,k(u) and Bj,l(w) be respectively along u to k times and along w to l B-spline basic function.Specifically:
And knot vector takes:Knot vector is (0, u1, u2... ... un-1, un),
But u takes corresponding value uiWhen, corresponding point is just node, i.e. Pi。LkFor the distance between two o'clock, i.e. Lk=| | Pk-Pk-1| |,
PkFor sensing point.Compensation curved surface available in this way.
(5) point on machining path is compensated according to compensation curved surface, for any point Q on machining pathi(xi,
yi, zi) point compensated on curved surface can be found outThe point on path is revised as Q in this wayi′(xi′y,i′,
zi'), wherein
(6) it is processed with other workpiece of new machining path to same batch, can machining accuracy be improved.
Technical solution provided by the invention enables to machining accuracy to improve an order of magnitude, for a model, processing
After the completion, general machining accuracy measures (probe to the size shape after processing with probe all in 10um (micron) left and right
Measurement accuracy can generally arrive 1um, if certainly using higher measuring device, it is available more to precisely compensate for data),
Offset data is obtained, compensation curved surface is calculated by offset data processing module according to offset data, then compensation curved surface
It is added in command path, when processing again in this way, error eliminates the need for naturally.
Although specific embodiments of the present invention have been described above, it will be appreciated by those of skill in the art that this is only
For example, protection scope of the present invention is to be defined by the appended claims.Those skilled in the art without departing substantially from
Under the premise of the principle and substance of the present invention, many changes and modifications may be made, but these change and
Modification each falls within protection scope of the present invention.
Claims (10)
1. a kind of compensation method of the machining path of workpiece, which comprises the following steps:
S1, according to the geomery of the workpiece generate the first machining path；
S2, using first machining path workpiece is processed；
S3, sensing point on the detection workpiece data, to obtain the real data of the sensing point；
S4, generate according to the anticipatory data of the real data and the sensing point offset data of the sensing point；
S5, according to the offset data first machining path is compensated, to generate the second machining path.
2. the compensation method of the machining path of workpiece as described in claim 1, which is characterized in that step S5The following steps are included:
S51, according to the offset data generate compensation curved surface；
S52, according to the compensation curved surface first machining path is compensated, to generate the second machining path.
3. the compensation method of the machining path of workpiece as claimed in claim 2, which is characterized in that step S51It is middle to use NURBS
Surface methodology carries out interpolation calculation to the offset data, to obtain the compensation curved surface.
4. the compensation method of the machining path of workpiece as claimed in claim 3, which is characterized in that step S52Including following step
It is rapid:
S5201, find out the value of any point on first machining path on the compensation curved surface as correction value；
S5202, replace on first machining path using the correction value corresponding value and as on second machining path
The value of corresponding points, to generate the second machining path.
5. the compensation method of the machining path of workpiece as described in claim 1, which is characterized in that step S3It before further include root
Probe program is generated according to the geomery of the workpiece, the probe program is for setting several sensing points；
Step S3The middle data that the sensing point on the workpiece is detected using the probe program.
6. the compensation method of the machining path of workpiece as claimed in claim 5, which is characterized in that the probe program is also used to
Calculate the anticipatory data of the sensing point.
7. the compensation method of the machining path of workpiece as claimed in claim 5, which is characterized in that the probe program is macro journey
Sequence.
8. the compensation method of the machining path of workpiece as claimed in claim 5, which is characterized in that the probe program include with
Lower step:
T1, setting parameter；
T2, calculate according to the geomery of the parameter and the workpiece position and the probe direction of the sensing point.
9. a kind of processing method of workpiece, which is characterized in that using the processing road of the described in any item workpiece of claim 1 to 8
Second machining path that the compensation method of diameter generates processes the workpiece.
10. a kind of workpiece, which is characterized in that the workpiece is processed using the processing method of workpiece as claimed in claim 9 and generated.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102882A (en) * | 2021-06-16 | 2021-07-13 | 杭州景业智能科技股份有限公司 | Geometric error compensation model training method and geometric error compensation method |
| CN114937343A (en) * | 2022-05-30 | 2022-08-23 | 歌尔股份有限公司 | Workpiece coordinate coefficient value alarm method, device, electronic equipment and storage medium |
| CN118204908A (en) * | 2024-05-21 | 2024-06-18 | 西安汉沣精密机械有限公司 | Method for processing full closed loop of workpiece |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789199A (en) * | 2011-05-18 | 2012-11-21 | 大连光洋科技工程有限公司 | Compensation system with repeated error weighted stacking in numerical control system |
| CN103218475A (en) * | 2013-03-14 | 2013-07-24 | 天津大学 | In-process evaluation based complex spatial surface error feedback compensating method |
| CN104759942A (en) * | 2015-04-22 | 2015-07-08 | 华中科技大学 | Online milling deformation measurement and complementation machining method for thin-walled part |
| CN105171521A (en) * | 2015-10-13 | 2015-12-23 | 北京卫星制造厂 | High-precision shaft part machining method based on multiple times of detection and compensation |
| CN105242637A (en) * | 2015-10-27 | 2016-01-13 | 华中科技大学 | Aviation thin-wall blade compensation processing method |
| CN106681273A (en) * | 2017-01-19 | 2017-05-17 | 苏州谷夫道自动化科技有限公司 | Automatic compensation method of probe measuring value of numerical control equipment |
-
2017
- 2017-10-31 CN CN201711044626.2A patent/CN109725595A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102789199A (en) * | 2011-05-18 | 2012-11-21 | 大连光洋科技工程有限公司 | Compensation system with repeated error weighted stacking in numerical control system |
| CN103218475A (en) * | 2013-03-14 | 2013-07-24 | 天津大学 | In-process evaluation based complex spatial surface error feedback compensating method |
| CN104759942A (en) * | 2015-04-22 | 2015-07-08 | 华中科技大学 | Online milling deformation measurement and complementation machining method for thin-walled part |
| CN105171521A (en) * | 2015-10-13 | 2015-12-23 | 北京卫星制造厂 | High-precision shaft part machining method based on multiple times of detection and compensation |
| CN105242637A (en) * | 2015-10-27 | 2016-01-13 | 华中科技大学 | Aviation thin-wall blade compensation processing method |
| CN106681273A (en) * | 2017-01-19 | 2017-05-17 | 苏州谷夫道自动化科技有限公司 | Automatic compensation method of probe measuring value of numerical control equipment |
Non-Patent Citations (1)
| Title |
|---|
| 袁浩波: "《NURBS建模与积分方程法》", 31 October 2014, 西安电子科技大学出版社 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113102882A (en) * | 2021-06-16 | 2021-07-13 | 杭州景业智能科技股份有限公司 | Geometric error compensation model training method and geometric error compensation method |
| CN114937343A (en) * | 2022-05-30 | 2022-08-23 | 歌尔股份有限公司 | Workpiece coordinate coefficient value alarm method, device, electronic equipment and storage medium |
| CN114937343B (en) * | 2022-05-30 | 2024-02-09 | 歌尔股份有限公司 | Workpiece coordinate coefficient value alarm method and device, electronic equipment and storage medium |
| CN118204908A (en) * | 2024-05-21 | 2024-06-18 | 西安汉沣精密机械有限公司 | Method for processing full closed loop of workpiece |
| CN118204908B (en) * | 2024-05-21 | 2024-07-30 | 西安汉沣精密机械有限公司 | Method for processing full closed loop of workpiece |
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