CN117140016A - Positioning abnormality error correction method, device and system based on precision machining - Google Patents
Positioning abnormality error correction method, device and system based on precision machining Download PDFInfo
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- CN117140016A CN117140016A CN202311422935.4A CN202311422935A CN117140016A CN 117140016 A CN117140016 A CN 117140016A CN 202311422935 A CN202311422935 A CN 202311422935A CN 117140016 A CN117140016 A CN 117140016A
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- 238000003754 machining Methods 0.000 title claims abstract description 48
- 230000005856 abnormality Effects 0.000 title claims abstract description 34
- 238000000034 method Methods 0.000 title claims abstract description 26
- 238000006073 displacement reaction Methods 0.000 claims abstract description 77
- 230000002159 abnormal effect Effects 0.000 claims abstract description 48
- 238000003825 pressing Methods 0.000 claims abstract description 28
- 230000006641 stabilisation Effects 0.000 claims 1
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- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 230000009466 transformation Effects 0.000 abstract description 5
- 230000011218 segmentation Effects 0.000 description 5
- 230000035882 stress Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 238000003709 image segmentation Methods 0.000 description 2
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P17/00—Metal-working operations, not covered by a single other subclass or another group in this subclass
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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
- B23Q1/00—Members which are comprised in the general build-up of a form of machine, particularly relatively large fixed members
- B23Q1/0009—Energy-transferring means or control lines for movable machine parts; Control panels or boxes; Control parts
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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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/12—Adaptive control, i.e. adjusting itself to have a performance which is optimum according to a preassigned criterion
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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
- B23Q15/00—Automatic control or regulation of feed movement, cutting velocity or position of tool or work
- B23Q15/007—Automatic control or regulation of feed movement, cutting velocity or position of tool or work while the tool acts upon the workpiece
- B23Q15/14—Control or regulation of the orientation of the tool with respect to the work
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- 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]
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Abstract
The application provides a positioning abnormality correction method, a positioning abnormality correction device and a positioning abnormality correction system based on precision machining, which are used for judging the pressure state of a machined workpiece according to the pressure value of a fixed surface of the machined workpiece, judging the distance state of the machined workpiece according to the distance value of a positioning hole of the machined workpiece and analyzing main influencing factors for generating positioning errors; judging the error state of the processed workpiece according to the displacement deviation proportion of the stable pressing block of the processing equipment and the positioning deviation proportion of the fixed die of the processing equipment; when the error state is abnormal: if the pressure state is abnormal, the correction distance of the supporting bar in the processing equipment is analyzed, and the positioning error correction is performed, if the distance state is abnormal, the correction distance of the processing arm in the processing equipment is analyzed, and the positioning error correction is performed, so that the positioning abnormality can be monitored and corrected in real time, the automation degree and the processing quality of precision mechanical processing are improved, and the transformation and upgrading of the manufacturing industry are promoted.
Description
Technical Field
The application relates to the technical field of precision machining, in particular to a positioning abnormality error correction method, device and system based on precision machining.
Background
Precision machining is a high-precision and high-requirement machining method and is widely applied to manufacturing industry. In the machining process, positioning abnormality is easy to occur due to the influence of factors such as environment, system and the like, so that the machining precision is reduced, and the product quality and the production efficiency are negatively influenced.
Machining errors may be reflected in a variety of different ways under a variety of different operating conditions, such as errors in machine tool manufacture, tool stress, fixture stress, workpiece deformation, process system deformation, and the like.
The existing precision machining positioning correction method is often based on a distance meter or a correction part to adjust the position and the direction of a workpiece spindle, and is mainly used for solving the problem of machine tool manufacturing errors, such as spindle rotation errors, guide rail errors, transmission chain errors and the like.
Therefore, there is a lack of a positioning error correction method that can be applied to various machining error factors.
Disclosure of Invention
The application aims to provide a positioning abnormality error correction method, device and system based on precise machining, which can monitor positioning errors caused under various different working conditions in real time and automatically correct the positioning errors so as to ensure the stability and accuracy of the machining process.
The specific technical scheme of the application is as follows:
the first aspect of the application provides a positioning abnormality error correction method based on precision machining, comprising the following steps:
acquiring a pressure value of a fixed surface of a machined workpiece, judging the pressure state of the machined workpiece according to the pressure value, acquiring a distance value of a locating hole of the machined workpiece, and judging the distance state of the machined workpiece according to the distance value;
obtaining a displacement deviation proportion of a stable pressing block of processing equipment, obtaining a positioning deviation proportion of a fixed die of the processing equipment, and judging an error state of the processed workpiece according to the displacement deviation proportion and the positioning deviation proportion;
when the error state is abnormal: and if the pressure state is abnormal, analyzing the correction distance of the supporting bar in the processing equipment and performing positioning error correction, and if the distance state is abnormal, analyzing the correction distance of the processing arm in the processing equipment and performing positioning error correction.
Further, the pressure values include at least two, and determining the pressure state of the machined workpiece according to the pressure values includes:
calculating a deviation pressure value according to each pressure value in at least two pressure values, and judging whether the processed workpiece is in a first abnormal pressure state according to the deviation pressure value;
and judging whether the processed workpiece is in a second abnormal pressure state according to the comparison relation between each pressure value in at least two pressure values and the standard pressure value.
Further, determining the distance state of the machined workpiece according to the distance value includes:
obtaining a standard distance between the positioning hole and the positioning column in the cloud;
and judging whether the machined workpiece is in an abnormal distance state according to the comparison relation between the distance value and the standard distance.
Further, obtaining a displacement deviation ratio of the stable pressing block of the processing equipment includes:
obtaining the displacement distance of the stable pressing block of the processing equipment in the XY axis direction or the XZ axis direction;
acquiring the moving distance of the stable pressing block of the processing equipment in the current moment setting instruction;
and determining the displacement deviation ratio according to the displacement distance and the moving distance.
Further, obtaining the positioning deviation ratio of the processing equipment fixing die comprises the following steps:
identifying the center positions of a frame plate, a gear and a positioning block of the processing equipment fixing die in the image data;
detecting the set positions of a frame plate, a gear and a positioning block of a fixed die of the processing equipment;
and determining the positioning deviation ratio according to the central position and the set position.
Further, determining the error state of the machined workpiece according to the displacement deviation ratio and the positioning deviation ratio includes:
if the difference value between the displacement deviation proportion and the positioning deviation proportion is larger than a threshold range, judging that the error state is abnormal;
and if the difference value between the displacement deviation proportion and the positioning deviation proportion is smaller than or equal to a threshold range, judging that the error state is normal.
Further, analyzing the alignment distance of the support bar in the processing apparatus includes:
obtaining the displacement distance and the displacement deviation ratio of the stable pressing block of the processing equipment;
and determining the correction distance of the supporting bar according to the ratio of the displacement distance to the displacement deviation proportion.
Further, analyzing the corrected distance of the processing arm in the processing apparatus includes:
obtaining the positioning distance and the positioning deviation ratio of the fixed die of the processing equipment;
and determining the correction distance of the processing arm according to the ratio of the positioning distance to the positioning deviation proportion.
A second aspect of the present application provides a positioning abnormality error correction device based on precision machining, comprising:
the first judging module is used for obtaining a pressure value of a fixed surface of a machined workpiece, judging the pressure state of the machined workpiece according to the pressure value, obtaining a distance value of a locating hole of the machined workpiece, and judging the distance state of the machined workpiece according to the distance value;
the second judging module is used for obtaining the displacement deviation proportion of the stable pressing block of the processing equipment, obtaining the positioning deviation proportion of the fixed die of the processing equipment and judging the error state of the processed workpiece according to the displacement deviation proportion and the positioning deviation proportion;
the positioning error correction module is used for, when the error state is abnormal: and if the pressure state is abnormal, analyzing the correction distance of the supporting bar in the processing equipment and performing positioning error correction, and if the distance state is abnormal, analyzing the correction distance of the processing arm in the processing equipment and performing positioning error correction.
Further, the pressure value includes at least two, and the first judging module is specifically configured to:
calculating a deviation pressure value according to each pressure value in at least two pressure values, and judging whether the processed workpiece is in a first abnormal pressure state according to the deviation pressure value;
and judging whether the processed workpiece is in a second abnormal pressure state according to the comparison relation between each pressure value in at least two pressure values and the standard pressure value.
Further, the first judging module is specifically configured to:
obtaining a standard distance between the positioning hole and the positioning column in the cloud;
and judging whether the machined workpiece is in an abnormal distance state according to the comparison relation between the distance value and the standard distance.
Further, the second judging module is specifically configured to:
obtaining the displacement distance of the stable pressing block of the processing equipment in the XY axis direction or the XZ axis direction;
acquiring the moving distance of the stable pressing block of the processing equipment in the current moment setting instruction;
and determining the displacement deviation ratio according to the displacement distance and the moving distance.
Further, the second judging module is specifically configured to:
identifying the center positions of a frame plate, a gear and a positioning block of the processing equipment fixing die in the image data;
detecting the set positions of a frame plate, a gear and a positioning block of a fixed die of the processing equipment;
and determining the positioning deviation ratio according to the central position and the set position.
Further, the second judging module is specifically configured to:
if the difference value between the displacement deviation proportion and the positioning deviation proportion is larger than a threshold range, judging that the error state is abnormal;
and if the difference value between the displacement deviation proportion and the positioning deviation proportion is smaller than or equal to a threshold range, judging that the error state is normal.
Further, the positioning error correction module is specifically configured to:
obtaining the displacement distance and the displacement deviation ratio of the stable pressing block of the processing equipment;
and determining the correction distance of the supporting bar according to the ratio of the displacement distance to the displacement deviation proportion.
Further, the positioning error correction module is specifically configured to:
obtaining the positioning distance and the positioning deviation ratio of the fixed die of the processing equipment;
and determining the correction distance of the processing arm according to the ratio of the positioning distance to the positioning deviation proportion.
The third aspect of the present application provides a positioning abnormality error correction system based on precision machining, which implements each step in the positioning abnormality error correction method based on precision machining, or includes each module in the positioning abnormality error correction device based on precision machining.
In summary, the application provides a positioning abnormality correction method, a positioning abnormality correction device and a positioning abnormality correction system based on precision machining, which are used for judging the pressure state of a machined workpiece according to the pressure value of a fixed surface of the machined workpiece, judging the distance state of the machined workpiece according to the distance value of a positioning hole of the machined workpiece and analyzing main influencing factors for generating positioning errors; judging the error state of the processed workpiece according to the displacement deviation proportion of the stable pressing block of the processing equipment and the positioning deviation proportion of the fixed die of the processing equipment; when the error state is abnormal: if the pressure state is abnormal, the correction distance of the supporting bar in the processing equipment is analyzed, and the positioning error correction is performed, if the distance state is abnormal, the correction distance of the processing arm in the processing equipment is analyzed, and the positioning error correction is performed, so that the positioning abnormality can be monitored and corrected in real time, the automation degree and the processing quality of precision mechanical processing are improved, and the transformation and upgrading of the manufacturing industry are promoted.
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In order to more clearly illustrate the embodiments of the application or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the application, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.
FIG. 1 is a flow chart of a positioning anomaly correction method based on precision machining.
Detailed Description
In order to make the objects, features and advantages of the present application more obvious and understandable, the technical solutions of the embodiments of the present application are clearly and completely described, and it is apparent that the embodiments described below are only some embodiments of the present application, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the application without making any inventive effort, are intended to be within the scope of the application.
Referring to fig. 1, fig. 1 is a flowchart of a positioning anomaly correction method based on precision machining according to the present application.
The embodiment of the application provides a positioning abnormality error correction method based on precision machining, which comprises the following steps:
s1: acquiring a pressure value of a fixed surface of a machined workpiece, judging the pressure state of the machined workpiece according to the pressure value, acquiring a distance value of a locating hole of the machined workpiece, and judging the distance state of the machined workpiece according to the distance value;
s2: obtaining a displacement deviation proportion of a stable pressing block of processing equipment, obtaining a positioning deviation proportion of a fixed die of the processing equipment, and judging an error state of the processed workpiece according to the displacement deviation proportion and the positioning deviation proportion;
s3: when the error state is abnormal: and if the pressure state is abnormal, analyzing the correction distance of the supporting bar in the processing equipment and performing positioning error correction, and if the distance state is abnormal, analyzing the correction distance of the processing arm in the processing equipment and performing positioning error correction.
As an example, the fixed surface of the workpiece to be processed in S1 refers to the contact surface with the stable pressing block of the processing apparatus, and the contact surface may be, but not limited to, two side walls of the workpiece to be processed, and the pressure value may be measured by using a conventional pressure sensor. The positioning holes of the processing workpiece are uniformly distributed on the surface of the processing workpiece, and the distance value refers to the distance between the positioning holes of the processing workpiece and the positioning columns of the processing equipment, and can be measured by adopting a conventional range finder. The pressure state is used for reflecting the external stress and deformation level under the loading state of the processed workpiece, and the distance state is used for reflecting the bias degree of the loading state of the processed workpiece. The system generates main influencing factors of positioning errors through pressure state and distance state analysis of the processed workpiece, thereby providing basis for a positioning error correction scheme.
As an embodiment, the processing equipment in S2 completes the precision machining action of machining the workpiece by moving the stable pressing block, and the displacement deviation ratio refers to the deviation degree of the displacement parameter and the set parameter after the system is initially positioned, and is used for reflecting the positioning intervention degree of the planar displacement of the pressing block. The processing equipment realizes the plane positioning calibration of the processed workpiece through the fixed die, and the positioning deviation ratio refers to the deviation degree of the positioning parameters and the set parameters after the system is subjected to preliminary positioning, and is used for reflecting the positioning intervention degree of the position rotation angle of the die. The system judges whether the processed workpiece has positioning errors according to the difference degree of the displacement deviation proportion and the positioning deviation proportion, if the difference between the displacement deviation proportion and the positioning deviation proportion is large, the processed workpiece is judged to have the positioning errors, and the error state is abnormal.
As an embodiment, when the system in S3 judges that positioning correction is needed, if the pressure state of the machined workpiece is abnormal, the system judges that the machined workpiece is stressed or the positioning error is caused by deformation factors, and the system adjusts the displacement distance of the support bar of the machining equipment to balance the improper stress of the stable pressing block on the machined workpiece after the displacement. If the distance state of the processed workpiece is abnormal, judging that the processed workpiece is subjected to plane positioning errors such as transmission, rotation angle and the like caused by factors such as machine tool manufacturing and the like, the system adjusts the displacement distance of a processing arm of processing equipment to balance and fix the die bias to drive the positioning bias of the processed workpiece, and finally, the automatic error correction function under the condition of abnormal positioning of the processed workpiece is realized.
According to an embodiment of the present application, the pressure values include at least two, and determining the pressure state of the machined workpiece according to the pressure values includes:
calculating a deviation pressure value according to each pressure value in at least two pressure values, and judging whether the processed workpiece is in a first abnormal pressure state according to the deviation pressure value;
and judging whether the processed workpiece is in a second abnormal pressure state according to the comparison relation between each pressure value in at least two pressure values and the standard pressure value.
As one embodiment, the system controls the actuation of a plurality of pressure sensors at the precision machined fixed die, detects the pressure value at the fixed position n1 (left side) at the current time, and determines the pressure value as the first pressure value. And simultaneously detecting the pressure value of the fixed position n2 (right side) at the current moment, and determining the pressure value as a second pressure value. The system multiplies 100% by the first pressure value divided by the second pressure value to calculate a current offset pressure value. If the current deviation pressure value does not belong to the pressure range (50% -150%), the stress distribution of the processed workpiece is seriously uneven, the fixed die is fixed, the problem of local error exists, and the first abnormal pressure state is determined. If the current deviation pressure value is within the bias range (50% -150%), the fixing of the fixed die is preliminarily judged to be free of problems or the problem of overall errors is solved, and further judgment is needed. And the system acquires a normal pressure value of the fixed die during processing from the cloud and determines the normal pressure value as a standard pressure value. Calculating an average value of the first pressure value and the second pressure value, comparing the current pressure average value with a standard pressure value, and determining that the fixed die has an integral error problem if the current pressure average value is more than 130% than the standard pressure value, and determining that the fixed die is in a second abnormal pressure state; otherwise, the pressure state is determined to be normal.
According to an embodiment of the present application, determining a distance state of the machined workpiece according to the distance value includes:
obtaining a standard distance between the positioning hole and the positioning column in the cloud;
and judging whether the machined workpiece is in an abnormal distance state according to the comparison relation between the distance value and the standard distance.
As an embodiment, the system controls the distance sensor of the positioning column to start, acquires whether the positioning hole is aligned with the positioning column at the current moment to ensure the position accuracy of the workpiece, and if the distance received by the positioning column is smaller than or equal to the normal distance, the positioning column is shielded, and the abnormal positioning condition exists. The system acquires the distance between the normal processing positioning column and the positioning hole from the cloud end, compares the distance between the normal processing positioning hole and the current positioning hole, and judges that the positioning column is aligned with the positioning hole and the distance state is normal if the current positioning hole distance is larger than the normal processing positioning hole distance; if the distance between the locating holes at the current moment is smaller than the distance between the locating holes in normal processing, judging that the distance state is abnormal.
According to an embodiment of the application, the method for obtaining the displacement deviation ratio of the stable pressing block of the processing equipment comprises the following steps:
obtaining the displacement distance of the stable pressing block of the processing equipment in the XY axis direction or the XZ axis direction;
acquiring the moving distance of the stable pressing block of the processing equipment in the current moment setting instruction;
and determining the displacement deviation ratio according to the displacement distance and the moving distance.
As one embodiment, the system controls a displacement sensor at a stable pressing block of a fixed die to start, obtains the XY axis displacement distance of the stable pressing block of the precision machining equipment at the current moment, obtains the set XY axis displacement distance at the current moment from a set command, and divides the current moment XY axis displacement distance by the set XY axis displacement distance to obtain the XY axis displacement deviation proportional value.
And if the XY axis does not move, the displacement sensor acquires the XZ axis movement value of the stable pressing block and the XZ axis movement distance set at the current moment to judge, so as to obtain the XZ axis displacement deviation proportional value.
According to an embodiment of the present application, obtaining a positioning deviation ratio of a processing apparatus fixing mold includes:
identifying the center positions of a frame plate, a gear and a positioning block of the processing equipment fixing die in the image data;
detecting the set positions of a frame plate, a gear and a positioning block of a fixed die of the processing equipment;
and determining the positioning deviation ratio according to the central position and the set position.
As one example, the system activates a precision machining equipment vision sensor, detects a fixed mold image and performs image segmentation. The image segmentation process comprises the steps of capturing an image, carrying out fixed threshold segmentation, carrying out boundary segmentation (Canny edge detection, contour extraction and boundary tracking) and Hough transformation (Hough transformation straight line detection and Hough transformation circle detection) on the image, carrying out region segmentation (region growth, region merging and splitting and clustering segmentation), carrying out color and watershed segmentation to obtain an image characteristic part, identifying the center positions of a frame plate, a gear and a positioning block, and respectively determining the center positions as first positioning coordinates. Meanwhile, the system controls the ultrasonic sensor to start, and the center positions of the frame plate, the gear and the positioning block of the fixed die are detected and respectively determined as second positioning coordinates. The system subtracts the second positioning coordinates corresponding to the frame plate, the gear and the positioning block from the first positioning coordinates of the frame plate, the gear and the positioning block, then divides the first positioning coordinates by the second positioning coordinates corresponding to the frame plate, the gear and the positioning block to obtain three deviation coordinates (20 percent and 20 percent), and calculates the average value of the ratios of the three deviation coordinates to obtain the positioning deviation ratio.
According to an embodiment of the present application, determining an error state of the machined workpiece according to the displacement deviation ratio and the positioning deviation ratio includes:
if the difference value between the displacement deviation proportion and the positioning deviation proportion is larger than a threshold range, judging that the error state is abnormal;
and if the difference value between the displacement deviation proportion and the positioning deviation proportion is smaller than or equal to a threshold range, judging that the error state is normal.
As an embodiment, the system compares the positioning deviation proportion with the displacement deviation proportion, if the former is greater than or equal to 112% of the latter or less than or equal to 88% of the latter, it is judged that the positioning is abnormal, namely the error state is abnormal, and the positioning is needed to be relocated after error correction processing; if the former is smaller than 112% of the latter and larger than 88% of the latter, it is judged that there is no abnormality in positioning, i.e., the error state is normal, and repositioning may not be performed.
According to an embodiment of the present application, analyzing the correction distance of the support bar in the processing apparatus includes:
obtaining the displacement distance and the displacement deviation ratio of the stable pressing block of the processing equipment;
and determining the correction distance of the supporting bar according to the ratio of the displacement distance to the displacement deviation proportion.
As an example, the correction distance=displacement distance +.displacement deviation ratio of the support bar. The principle is that the displacement deviation is adjusted according to the original position and the current dislocation proportion, and if the displacement deviation is required to be 1cm, the actual displacement is 1.5cm, and the displacement deviation proportion is 150%, the balance deviation part distance is required.
According to an embodiment of the present application, analyzing the corrected distance of the processing arm in the processing apparatus includes:
obtaining the positioning distance and the positioning deviation ratio of the fixed die of the processing equipment;
and determining the correction distance of the processing arm according to the ratio of the positioning distance to the positioning deviation proportion.
As an example, the correction distance=positioning distance +.positioning deviation ratio of the processing arm. After finishing the feedback adjustment of the precision machining equipment, the pressure state or the distance state is confirmed again, and if the state is abnormal, the system acquires the positioning deviation proportion again and executes control again.
The above embodiments are only for illustrating the technical solution of the present application, and not for limiting the same; although the application has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some technical features thereof can be replaced by equivalents; such modifications and substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A positioning abnormality error correction method based on precision machining is characterized by comprising the following steps:
acquiring a pressure value of a fixed surface of a machined workpiece, judging the pressure state of the machined workpiece according to the pressure value, acquiring a distance value of a locating hole of the machined workpiece, and judging the distance state of the machined workpiece according to the distance value;
obtaining a displacement deviation proportion of a stable pressing block of processing equipment, obtaining a positioning deviation proportion of a fixed die of the processing equipment, and judging an error state of the processed workpiece according to the displacement deviation proportion and the positioning deviation proportion;
when the error state is abnormal: and if the pressure state is abnormal, analyzing the correction distance of the supporting bar in the processing equipment and performing positioning error correction, and if the distance state is abnormal, analyzing the correction distance of the processing arm in the processing equipment and performing positioning error correction.
2. The precision machining-based positioning abnormality correction method according to claim 1, wherein the pressure values include at least two, and determining the pressure state of the machined workpiece from the pressure values includes:
calculating a deviation pressure value according to each pressure value in at least two pressure values, and judging whether the processed workpiece is in a first abnormal pressure state according to the deviation pressure value;
and judging whether the processed workpiece is in a second abnormal pressure state according to the comparison relation between each pressure value in at least two pressure values and the standard pressure value.
3. The positioning abnormality correction method based on precision machining according to claim 1, wherein judging a distance state of the machined workpiece from the distance value includes:
obtaining a standard distance between the positioning hole and the positioning column in the cloud;
and judging whether the machined workpiece is in an abnormal distance state according to the comparison relation between the distance value and the standard distance.
4. The positioning abnormality error correction method based on precision machining according to claim 1, wherein obtaining a displacement deviation ratio of a machining apparatus stabilization compact comprises:
obtaining the displacement distance of the stable pressing block of the processing equipment in the XY axis direction or the XZ axis direction;
acquiring the moving distance of the stable pressing block of the processing equipment in the current moment setting instruction;
and determining the displacement deviation ratio according to the displacement distance and the moving distance.
5. The positioning abnormality error correction method based on precision machining according to claim 1, wherein obtaining a positioning deviation ratio of a machining apparatus fixing die comprises:
identifying the center positions of a frame plate, a gear and a positioning block of the processing equipment fixing die in the image data;
detecting the set positions of a frame plate, a gear and a positioning block of a fixed die of the processing equipment;
and determining the positioning deviation ratio according to the central position and the set position.
6. The positioning abnormality correction method based on precision machining according to claim 1, wherein judging an error state of the machined workpiece based on the displacement deviation ratio and the positioning deviation ratio comprises:
if the difference value between the displacement deviation proportion and the positioning deviation proportion is larger than a threshold range, judging that the error state is abnormal;
and if the difference value between the displacement deviation proportion and the positioning deviation proportion is smaller than or equal to a threshold range, judging that the error state is normal.
7. The precision machining-based positioning abnormality correction method according to claim 1, wherein analyzing the correction distance of the support bar in the machining apparatus includes:
obtaining the displacement distance and the displacement deviation ratio of the stable pressing block of the processing equipment;
and determining the correction distance of the supporting bar according to the ratio of the displacement distance to the displacement deviation proportion.
8. The positioning abnormality correction method based on precision machining according to claim 1, wherein analyzing the correction distance of a machining arm in the machining apparatus includes:
obtaining the positioning distance and the positioning deviation ratio of the fixed die of the processing equipment;
and determining the correction distance of the processing arm according to the ratio of the positioning distance to the positioning deviation proportion.
9. Positioning abnormality error correction device based on precision machining, characterized by that, positioning abnormality error correction device based on precision machining includes:
the first judging module is used for obtaining a pressure value of a fixed surface of a machined workpiece, judging the pressure state of the machined workpiece according to the pressure value, obtaining a distance value of a locating hole of the machined workpiece, and judging the distance state of the machined workpiece according to the distance value;
the second judging module is used for obtaining the displacement deviation proportion of the stable pressing block of the processing equipment, obtaining the positioning deviation proportion of the fixed die of the processing equipment and judging the error state of the processed workpiece according to the displacement deviation proportion and the positioning deviation proportion;
the positioning error correction module is used for, when the error state is abnormal: and if the pressure state is abnormal, analyzing the correction distance of the supporting bar in the processing equipment and performing positioning error correction, and if the distance state is abnormal, analyzing the correction distance of the processing arm in the processing equipment and performing positioning error correction.
10. A positioning abnormality error correction system based on precision machining, characterized in that the positioning abnormality error correction system based on precision machining realizes each step in the positioning abnormality error correction method based on precision machining according to any one of claims 1 to 8, or comprises each module in the positioning abnormality error correction device based on precision machining according to claim 9.
Priority Applications (1)
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| CN102689167A (en) * | 2012-06-14 | 2012-09-26 | 中联重科股份有限公司 | Positioning method and marking tool for crane counterweight positioning pin |
| CN103286631A (en) * | 2012-02-22 | 2013-09-11 | 北京福田康明斯发动机有限公司 | Benchmark deviation compensation type processing method and system used for box or shell part |
| CN107791100A (en) * | 2017-09-28 | 2018-03-13 | 宝鸡市永盛泰钛业有限公司 | A kind of location error compensation system for Digit Control Machine Tool |
| JP2020085460A (en) * | 2018-11-15 | 2020-06-04 | 株式会社デンソーウェーブ | Substrate inspection device and positioning method of substrate |
| CN115213255A (en) * | 2022-07-15 | 2022-10-21 | 上汽通用五菱汽车股份有限公司 | Method for adjusting dimensional deviation of stamping part, electronic device and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103286631A (en) * | 2012-02-22 | 2013-09-11 | 北京福田康明斯发动机有限公司 | Benchmark deviation compensation type processing method and system used for box or shell part |
| CN102689167A (en) * | 2012-06-14 | 2012-09-26 | 中联重科股份有限公司 | Positioning method and marking tool for crane counterweight positioning pin |
| CN107791100A (en) * | 2017-09-28 | 2018-03-13 | 宝鸡市永盛泰钛业有限公司 | A kind of location error compensation system for Digit Control Machine Tool |
| JP2020085460A (en) * | 2018-11-15 | 2020-06-04 | 株式会社デンソーウェーブ | Substrate inspection device and positioning method of substrate |
| CN115213255A (en) * | 2022-07-15 | 2022-10-21 | 上汽通用五菱汽车股份有限公司 | Method for adjusting dimensional deviation of stamping part, electronic device and storage medium |
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