CN112132161A - Method, apparatus and computer-readable storage medium for repairing worn parts - Google Patents

Method, apparatus and computer-readable storage medium for repairing worn parts Download PDF

Info

Publication number
CN112132161A
CN112132161A CN202010930788.1A CN202010930788A CN112132161A CN 112132161 A CN112132161 A CN 112132161A CN 202010930788 A CN202010930788 A CN 202010930788A CN 112132161 A CN112132161 A CN 112132161A
Authority
CN
China
Prior art keywords
worn
wear
section
repairing
morphology
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN202010930788.1A
Other languages
Chinese (zh)
Inventor
杨道国
乔铁良
王瑞卿
郑川
常朝正
俞兆喆
郝卫东
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Guilin University of Electronic Technology
Original Assignee
Guilin University of Electronic Technology
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Guilin University of Electronic Technology filed Critical Guilin University of Electronic Technology
Priority to CN202010930788.1A priority Critical patent/CN112132161A/en
Publication of CN112132161A publication Critical patent/CN112132161A/en
Pending legal-status Critical Current

Links

Images

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/40—Extraction of image or video features
    • G06V10/44—Local feature extraction by analysis of parts of the pattern, e.g. by detecting edges, contours, loops, corners, strokes or intersections; Connectivity analysis, e.g. of connected components
    • 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
    • B23P6/00—Restoring or reconditioning objects
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/0002—Inspection of images, e.g. flaw detection
    • G06T7/0004—Industrial image inspection
    • G06T7/001—Industrial image inspection using an image reference approach
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/10—Segmentation; Edge detection
    • G06T7/11—Region-based segmentation
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V10/00—Arrangements for image or video recognition or understanding
    • G06V10/20—Image preprocessing
    • G06V10/255—Detecting or recognising potential candidate objects based on visual cues, e.g. shapes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06V—IMAGE OR VIDEO RECOGNITION OR UNDERSTANDING
    • G06V20/00—Scenes; Scene-specific elements
    • G06V20/60—Type of objects
    • G06V20/64—Three-dimensional objects

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Theoretical Computer Science (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Multimedia (AREA)
  • Quality & Reliability (AREA)
  • Mechanical Engineering (AREA)
  • Geometry (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The invention provides a method, equipment and a computer readable storage medium for repairing a worn part, wherein the method for repairing the worn part comprises the following steps: scanning the worn part to obtain point cloud data of the worn part; fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part; and repairing the worn area of the worn part according to the worn profile and the worn section. The method for repairing the worn part provided by the invention can repair the worn area of the part, so that the part can be restored to the shape of the part when the part is not worn, the part can be reused, the cost caused by replacing the part is reduced, the influence on the equipment precision caused by the wear of the part is reduced, and the processing precision of the equipment is ensured under the condition that the worn part is not wasted.

Description

Method, apparatus and computer-readable storage medium for repairing worn parts
Technical Field
The invention relates to the technical field of part repair, in particular to a method for repairing a worn part, a device for repairing the worn part and a computer-readable storage medium.
Background
At present, parts are worn in the using process, and particularly for cutters of some large-scale machining equipment, the machining precision of the machining equipment can be directly influenced after the cutters are worn.
In the related art, the cost of a cutter of large-scale processing equipment is usually high, if the cutter is worn, resource waste can be caused by replacing the cutter, and the processing precision of the processing equipment can be influenced if the cutter is not replaced.
Disclosure of Invention
The present invention is directed to solving at least one of the problems of the prior art or the related art.
To this end, a first aspect of the invention proposes a method for repairing a worn part.
A second aspect of the invention proposes a repair device for a worn part.
A third aspect of the invention proposes a computer-readable storage medium.
In view of this, a first aspect of the present invention provides a method of repairing a worn part, comprising: scanning the worn part to obtain point cloud data of the worn part; fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part; and repairing the worn area of the worn part according to the worn profile and the worn section.
According to the method for repairing the worn part, the shape of the worn part is compared with the shape of the part when the part is not worn, and then a worn area of the part is obtained; and fitting the point cloud data of the worn part shape and the point cloud data of the unworn part shape to obtain a worn profile and a worn section of the worn part, wherein the worn profile is the outer profile of the worn area, and the worn section is one side surface of the worn area. After the wear profile and the wear section are obtained, the wear profile is used as a reference, the wear profile is used as a repair boundary, and a wear area of the part is repaired, so that the part can be restored to a part shape when the part is not worn, the part can be reused, the cost caused by part replacement is reduced, the influence on the precision of the equipment due to part wear is reduced, and the precision of the equipment is ensured under the condition that the wear part is not wasted.
The worn part shape point cloud data and the unworn part shape point cloud data are fitted to obtain the worn outline and the worn section of the worn part, and the repair equipment can accurately acquire the shape of the worn area of the part no matter whether the worn area is in a regular shape or not, so that the repair error caused by the irregular worn area is reduced, and the repair precision of the part is improved.
The abrasion area of the part is repaired according to the abrasion profile and the abrasion section of the abrasion part, and the repairing process is performed according to the abrasion area of the part, so that the repairing process of the part has stronger pertinence, and the repairing precision of the part is improved.
In addition, the method for repairing the worn part in the technical scheme provided by the invention can also have the following additional technical characteristics:
in one aspect of the invention, repairing a worn region of a worn part based on a wear profile and a wear profile comprises: acquiring a section line of the abrasion section according to the section of the abrasion profile, which is vertical to the abrasion section, and the abrasion section; acquiring the single-pass cladding morphology according to the section line of the wear section; and repairing the worn area of the worn part according to the single-pass cladding morphology.
In the technical scheme, a section line on a wear section is obtained through a section method, the section line is a section of a wear area, the section is perpendicular to the wear section, and the section line is a parabola formed by the intersection of the section and the wear section. And after the section line on the section is obtained, obtaining the single-pass cladding morphology according to the section line, and realizing the repair of the worn area based on the single-pass cladding morphology.
The single-pass repairing appearance is the appearance of a single-pass repairing to the worn area.
In one technical scheme of the invention, the acquiring of the single-pass cladding morphology according to the section line of the wear section comprises the following steps: acquiring a function of a section line of the wear section; acquiring the width and the height of the single-pass cladding appearance according to the function of the section line of the wear section; and obtaining the single-pass cladding morphology according to the function of the section line of the wear section, the width of the single-pass cladding morphology and the height of the single-pass cladding morphology.
According to the technical scheme, after the section line is obtained, the function corresponding to the section line can be obtained according to the form of the section line, and the section line is parabolic, so that the obtained section line function is not a parabolic function, the width and the height of the single-pass cladding morphology can be obtained according to the parabolic function and the mapping relation between the section line and the single-pass cladding morphology, the single-pass cladding morphology can be obtained by combining the width and the height of the single-pass cladding morphology of the parabolic function, and further the laser equipment can repair a wear area according to the single-pass cladding morphology.
In one technical scheme of the invention, the obtaining of the width and the height of the single-pass cladding morphology according to the function of the section line of the wear section is as follows: the function of the section line of the wear profile is a parabolic function, which is: fi(x)＝aix2+bix+ci(ii) a Wherein, ai＝-4h/w2，bi＝4h/w，ci0; h is the height of the single-pass cladding morphology, and w is the width of the single-pass cladding morphology.
According to the technical scheme, a parabolic function can be obtained according to the shape of the section line, and then the width and the height of the single-pass cladding morphology can be obtained according to the parabolic function and the mapping relation between the section line and the single-pass cladding morphology. Based on the single-pass cladding morphology obtained by the width and the height, the surface of the repaired part has higher flatness, the shape of the part is closer to the shape of the part which is not worn, the repairing effect on the part is further improved, and the repaired part has higher working precision.
For example, the parabolic function is f (x) -0.2x2+ x, then-0.2 ═ 4h/w can be obtained21-4 h/w, and further h-1.25 mm and w-5 mm.
The height of the single-channel cladding appearance can be adjusted according to the track points, namely the track points are determined according to the requirements of laser equipment or the requirements of repair precision, and then the height of the single-channel cladding appearance is determined according to the distance between the track points.
In one technical scheme of the invention, repairing the worn area of the worn part according to the single-pass cladding morphology comprises the following steps: acquiring a plurality of track points of the laser equipment according to the height of the wear section and the single-channel cladding appearance; establishing a repair path of the laser equipment according to the plurality of track points; and controlling the laser equipment to repair the worn area of the worn part according to the single cladding appearance and the repair path.
According to the technical scheme, the number of times of repairing along the width direction of the wear section can be determined according to the height of the wear section and the height of the single-channel cladding appearance, the position of the section line is set as an initial position, a track point is set at each interval of the distance of the height of the single-channel cladding appearance, then laser equipment is controlled, and the wear area of the part is repaired at each track point according to the single-channel cladding appearance.
The height and the width of the wear section can be determined according to the boundary points of the wear section, the number of the track points can be obtained according to the width of the wear section and the height of the single-channel cladding appearance, and then the track points are arranged along the width direction of the wear section, so that the repair track can be obtained.
In one aspect of the present invention, controlling a laser device to repair a worn region of a worn part includes: acquiring a curvature factor of the wear section according to the Gaussian curvature and the average curvature of the wear section; adjusting the emitting direction of a laser gun of the laser equipment to be the normal direction of the abrasion section at the position with the minimum curvature factor; and controlling the laser gun to melt the repair material in the wear profile according to the single-pass cladding appearance and the repair path so as to fill the repair material in the wear profile.
In this technical scheme, through the gaussian curvature and the average curvature that acquire arbitrary one point on the section of wearing and tearing, and then obtain the curvature factor of the section of wearing and tearing at this point department, through the curvature factor of each point department on the comparison curved surface, set up the normal direction of the minimum one point of curvature factor into the emission direction of laser gun, and then make the laser that the laser gun launches shine to the optional position in the area of wearing and tearing, the emergence restoration blind area in the area of avoiding wearing and tearing promotes the restoration effect to the area of wearing and tearing.
The repair material is the same material as the part.
In one aspect of the present invention, after repairing a worn region of a worn part according to a wear profile and a wear profile, the method of repairing a worn part further includes: detecting the surface flatness of the repaired wear area; judging whether the worn area is repaired or not according to the surface flatness of the worn area; in the event that the worn area repair is incomplete, the worn part is scanned again.
According to the technical scheme, the repairing effect on the part abrasion area can be detected by detecting the surface flatness of the repaired abrasion area, whether the repaired part reaches the applicable standard can be further detected, and the part can be repaired again based on the repairing method of the abrasion part under the condition that the repaired part does not reach the applicable standard until the repaired part reaches the standard.
In one technical scheme of the invention, fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part comprises the following steps: and fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part and based on Non-uniform rational B-spline (NURBS).
In the technical scheme, the wear profile and the wear section of the wear part are simulated through a non-uniform rational spline, so that the wear profile and the wear section can be fitted more flexibly and accurately.
A second aspect of the present invention provides a worn part repairing apparatus comprising: a memory and a processor, the memory configured to store executable instructions; the processor is configured to execute the stored instructions to implement the method for repairing a worn part according to any one of the above-mentioned technical solutions, so that the apparatus for repairing a worn part has all the advantages of the method for repairing a worn part according to any one of the above-mentioned technical solutions.
A third aspect of the present invention provides a computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, implements the method for repairing a worn part according to any one of the above-mentioned technical solutions, and therefore the computer-readable storage medium has all the advantageous effects of the method for repairing a worn part according to any one of the above-mentioned technical solutions.
Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.
Drawings
The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:
FIG. 1 shows a flow diagram of a method of repairing a worn part according to one embodiment of the invention;
FIG. 2 shows a flow diagram of a method of repairing a worn part according to another embodiment of the invention;
FIG. 3 shows a flow diagram of a method of repairing a worn part according to yet another embodiment of the invention;
FIG. 4 shows a flow diagram of a method of repairing a worn part according to yet another embodiment of the invention;
FIG. 5 shows a flow diagram of a method of repairing a worn part according to yet another embodiment of the invention;
FIG. 6 shows a flow diagram of a method of repairing a worn part according to yet another embodiment of the invention;
FIG. 7 shows a schematic view of a wear part fit to a parent part according to one embodiment of the invention;
FIG. 8 shows a schematic view of a wear profile according to an embodiment of the invention;
FIG. 9 shows a schematic view of a cladding layer according to an embodiment of the invention;
fig. 10 shows a schematic view of a cladding track according to an embodiment of the invention.
Wherein, the correspondence between the reference numbers and the part names in fig. 7 to 10 is:
100 wearing parts, 200 original parts, 300 section lines, 400 track points, 500 wearing sections and 600 cladding layers.
Detailed Description
In order that the above objects, features and advantages of the present invention can be more clearly understood, a more particular description of the invention will be rendered by reference to the appended drawings. It should be noted that the embodiments and features of the embodiments of the present application may be combined with each other without conflict.
In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, however, the present invention may be practiced in other ways than those specifically described herein, and therefore the scope of the present invention is not limited by the specific embodiments disclosed below.
A method of repairing a worn part, a device for repairing a worn part, and a computer-readable storage medium according to some embodiments of the present invention are described below with reference to fig. 1 to 10.
The first embodiment is as follows:
as shown in fig. 1, the present invention provides a method of repairing a worn part, comprising:
step 102, scanning a worn part to obtain point cloud data of the worn part;
104, fitting a wear profile and a wear section of the worn part according to the point cloud data of the original part and the point cloud data of the worn part;
and step 106, repairing the worn area of the worn part according to the worn outline and the worn section.
In the embodiment, the shape of the worn part is compared with the shape of the part when the part is not worn, so that a worn area of the part is obtained; and fitting the point cloud data of the worn part shape and the point cloud data of the unworn part shape to obtain a worn profile and a worn section of the worn part, wherein the worn profile is the outer profile of the worn area, and the worn section is one side surface of the worn area. After the wear profile and the wear section are obtained, the wear profile is used as a reference, the wear profile is used as a repair boundary, and a wear area of the part is repaired, so that the part can be restored to a part shape when the part is not worn, the part can be reused, the cost caused by part replacement is reduced, the influence on the equipment precision caused by part wear is reduced, and the equipment processing precision is ensured under the condition that the wear part is not wasted.
The worn part shape point cloud data and the unworn part shape point cloud data are fitted to obtain the worn outline and the worn section of the worn part, and the repair equipment can accurately acquire the shape of the worn area of the part no matter whether the worn area is in a regular shape or not, so that the repair error caused by the irregular worn area is reduced, and the repair precision of the part is improved.
The abrasion area of the part is repaired according to the abrasion profile and the abrasion section of the abrasion part, and the repairing process is performed according to the abrasion area of the part, so that the repairing process of the part has stronger pertinence, and the repairing precision of the part is improved.
According to the method for repairing the wear part, provided by the invention, a high-hardness hardened surface and a deeper strain layer are formed in the wear area of the wear part, and the wear resistance is more shown.
The point cloud data of the original part is prestored in a database.
Example two:
as shown in fig. 2, the present invention provides a method of repairing a worn part, comprising:
step 202, scanning the worn part to obtain point cloud data of the worn part;
step 204, fitting a wear profile and a wear section of the worn part according to the point cloud data of the original part and the point cloud data of the worn part;
step 206, acquiring a section line of the wear section according to the wear section and a section perpendicular to the wear section of the wear profile;
208, acquiring a single-pass cladding morphology according to the section line of the wear section;
and step 210, repairing the worn area of the worn part according to the single-pass cladding morphology.
In this embodiment, a section line on the wear section, which is a section of the wear region perpendicular to the wear section, is obtained by a section method, and the section line is a parabola formed by the intersection of the section line and the wear section. And after the section line on the section is obtained, obtaining the single-pass cladding morphology according to the section line, and realizing the repair of the worn area based on the single-pass cladding morphology.
The single-pass repairing appearance is the appearance of a single-pass repairing to the worn area.
Example three:
as shown in fig. 3, the present invention provides a method of repairing a worn part, comprising:
step 302, scanning the worn part to obtain point cloud data of the worn part;
step 304, fitting a wear profile and a wear section of the worn part according to the point cloud data of the original part and the point cloud data of the worn part;
step 306, acquiring a section line of the wear section according to the wear section and a section perpendicular to the wear section of the wear profile;
308, acquiring a function of a section line of the wear section;
step 310, acquiring the width and the height of the single-pass cladding morphology according to the function of the section line of the wear section;
step 312, obtaining a single-pass cladding morphology according to a function of a section line of the wear section, the width of the single-pass cladding morphology and the height of the single-pass cladding morphology;
and step 314, repairing the worn area of the worn part according to the single-pass cladding morphology.
In this embodiment, after the section line is obtained, a function corresponding to the section line can be obtained according to the form of the section line, and since the section line is parabolic, the obtained section line function is not a parabolic function, and according to the parabolic function and the mapping relationship between the section line and the single-pass cladding morphology, the width and the height of the single-pass cladding morphology of the parabolic function can be obtained, and then the width and the height of the single-pass cladding morphology of the parabolic function are combined to obtain the single-pass cladding morphology, so that the laser device can repair the worn region according to the single-pass cladding morphology.
Example four:
the method comprises the following steps of obtaining the width and the height of the single-pass cladding appearance according to the function of the section line of the wear section: the function of the section line of the wear profile is a parabolic function, which is: fi(x)＝aix2+bix+ci(ii) a Wherein, ai＝-4h/w2，bi＝4h/w，ci0; h is the height of the single-pass cladding morphology, and w is the width of the single-pass cladding morphology.
In this embodiment, a parabolic function can be obtained according to the shape of the section line, and then the width and height of the single-pass cladding feature can be obtained according to the parabolic function and the mapping relationship between the section line and the single-pass cladding feature. Based on the single-pass cladding morphology obtained by the width and the height, the surface of the repaired part has higher flatness, the shape of the part is closer to the shape of the part which is not worn, the repairing effect on the part is further improved, and the repaired part has higher working precision.
For example, the parabolic function is f (x) -0.2x2+ x, then-0.2 ═ 4h/w can be obtained21-4 h/w, and further h-1.25 mm and w-5 mm.
The height of the single-channel cladding appearance can be adjusted according to the track points, namely the track points are determined according to the requirements of laser equipment or the requirements of repair precision, and then the height of the single-channel cladding appearance is determined according to the distance between the track points.
Example five:
as shown in fig. 4, the present invention provides a method of repairing a worn part, comprising:
step 402, scanning a worn part to obtain point cloud data of the worn part;
step 404, fitting a wear profile and a wear section of the worn part according to the point cloud data of the original part and the point cloud data of the worn part;
step 406, acquiring a section line of the wear section according to the wear section and a section perpendicular to the wear section of the wear profile;
step 408, acquiring a function of a section line of the wear section;
step 410, acquiring the width and the height of the single-pass cladding morphology according to the function of the section line of the wear section;
step 412, obtaining a single-pass cladding morphology according to a function of a section line of the wear section, the width of the single-pass cladding morphology and the height of the single-pass cladding morphology;
step 414, obtaining a plurality of track points of the laser equipment according to the wear section and the height of the single-channel cladding morphology;
step 416, establishing a repair path of the laser device according to the plurality of track points;
and 418, controlling the laser equipment to repair the worn area of the worn part according to the single-pass cladding appearance and the repair path.
In the embodiment, the number of times of repairing along the width direction of the wear section can be determined according to the height of the wear section and the height of the single-pass cladding feature, the position of the section line is set as an initial position, one track point is set at intervals of the height of the single-pass cladding feature, then the laser equipment is controlled, and the wear area of the part is repaired at each track point according to the single-pass cladding feature in sequence.
The height and the width of the wear section can be determined according to the boundary points of the wear section, the number of the track points can be obtained according to the width of the wear section and the height of the single-channel cladding appearance, and then the track points are arranged along the width direction of the wear section, so that the repair track can be obtained.
Example six:
as shown in fig. 5, the present invention provides a method of repairing a worn part, comprising:
step 502, scanning a worn part to obtain point cloud data of the worn part;
step 504, fitting a wear profile and a wear section of the worn part according to the point cloud data of the original part and the point cloud data of the worn part;
step 506, acquiring a section line of the wear section according to the wear section and a section perpendicular to the wear section of the wear profile;
step 508, acquiring a function of a section line of the wear section;
step 510, acquiring the width and the height of the single-pass cladding morphology according to a function of a section line of the wear section;
step 512, acquiring a single-pass cladding morphology according to a function of a section line of the wear section, the width of the single-pass cladding morphology and the height of the single-pass cladding morphology;
step 514, acquiring a plurality of track points of the laser equipment according to the wear section and the height of the single-channel cladding appearance;
step 516, establishing a repair path of the laser device according to the plurality of track points;
518, acquiring a curvature factor of the wear section according to the Gaussian curvature and the average curvature of the wear section;
step 520, adjusting the emission direction of a laser gun of the laser device to be the normal direction of the abrasion section at the position with the minimum curvature factor;
and 522, controlling the laser gun to melt the repair material in the wear profile according to the single-pass cladding appearance and the repair path so as to fill the repair material in the wear profile.
In this embodiment, through the gaussian curvature and the average curvature that acquire arbitrary one point on the section of wearing and tearing, and then obtain the curvature factor of the section of wearing and tearing at this point department, through the curvature factor of each point department on the comparison curved surface, set up the normal direction of the minimum one point of curvature factor into the emission direction of laser gun, and then make the laser that the laser gun launches shine to the regional optional position of wearing and tearing, the restoration blind area appears in avoiding the wearing and tearing region, promotes the restoration effect to the wearing and tearing region.
The repair material is the same material as the part.
Example seven:
as shown in fig. 6, the present invention provides a method of repairing a worn part, comprising:
step 602, scanning a worn part to obtain point cloud data of the worn part;
step 604, fitting the wear profile and the wear section of the worn part according to the point cloud data of the original part and the point cloud data of the worn part;
step 606, repairing the worn area of the worn part according to the worn profile and the worn section;
step 608, detecting the surface flatness of the repaired wear area;
step 610, judging whether the worn area is repaired or not according to the surface flatness of the worn area;
scanning the worn part again when the worn area repair is not complete;
in the case where the worn region repair is completed, the repair of the part is ended.
In the embodiment, the repairing effect on the part abrasion area can be detected by detecting the surface flatness of the repaired abrasion area, so that whether the repaired part reaches the applicable standard can be detected, and under the condition of not reaching the standard, the part can be repaired again based on the repairing method of the abrasion part until the standard is reached.
Example eight:
in any of the above embodiments, fitting the wear profile and the wear profile of the worn part according to the point cloud data of the original part and the point cloud data of the worn part includes: and fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part and based on Non-uniform rational B-spline (NURBS).
In the embodiment, the wear profile and the wear section of the wear part are simulated through a non-uniform rational spline, so that the wear profile and the wear section can be fitted more flexibly and accurately.
Example nine:
the present invention provides a device for repairing a worn part, comprising: a memory and a processor, the memory configured to store executable instructions; the processor is configured to execute the stored instructions to implement the method for repairing a worn part as in any of the above embodiments, and therefore the apparatus for repairing a worn part has all the advantages of the method for repairing a worn part as in any of the above embodiments.
Example ten:
the present invention provides a computer-readable storage medium on which a computer program is stored, which, when executed by a processor, implements the method of repairing a worn part as in any of the embodiments described above, and therefore has all the advantageous effects of the method of repairing a worn part of any of the embodiments described above.
Example eleven:
as shown in fig. 7, the worn part 100 is scanned, and point cloud data of the worn part 100 is acquired; fitting the wear profile and the wear section 500 of the wear part 100 according to the point cloud data of the original part 200 and the point cloud data of the wear part 100; as shown in fig. 8, a section line 300 of the wear profile 500 is obtained based on a section of the wear profile perpendicular to the wear profile 500 and the wear profile 500; obtaining a function of the section line 300 of the wear profile 500; as shown in fig. 9, the width w of the single pass cladding feature and the height h of the single pass cladding feature are obtained as a function of the section line 300 of the wear profile 500; acquiring the single-pass cladding morphology according to the function of the section line 300 of the wear section 500, the width w of the single-pass cladding morphology and the height h of the single-pass cladding morphology; as shown in fig. 10, a plurality of trace points 400 of the laser device are obtained according to the wear section 500 and the height h of the single-pass cladding feature; establishing a repair path of the laser device according to the plurality of trace points 400 (as shown by arrows in fig. 10, an extending direction of the arrows is the repair path, and a pointing direction of the arrows is the repair direction); acquiring a curvature factor of the wear section 500 according to the Gaussian curvature and the average curvature of the wear section 500; adjusting the emitting direction of a laser gun of the laser equipment to be the normal direction of the abrasion section 500 at the position with the minimum curvature factor; and controlling the laser gun to melt the repair material in the wear profile according to the single-pass cladding appearance and the repair path so as to fill the repair material in the wear profile.
As shown in FIG. 8, an X-Y-Z coordinate system is established at the position of the wear profile 500 where the curvature factor is minimum; the origin of the coordinate system is the point corresponding to the minimum curvature factor on the wear profile 500, the X-axis is along the width direction of the wear profile 500, the Z-axis is along the vertical direction, and the Y-axis is perpendicular to both the X-axis and the Z-axis.
When the worn area is repaired, the worn area is repaired at each track point 400 along the X axis in sequence to form a first layer of cladding layer 600, and then the worn area is repaired again along the Y axis to form a second layer of cladding layer 600 until the worn area is repaired.
In the description of the present invention, the terms "plurality" or "a plurality" refer to two or more, and unless otherwise specifically limited, the terms "upper", "lower", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience in describing the present invention and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus should not be construed as limiting the present invention; the terms "connected," "mounted," "secured," and the like are to be construed broadly and include, for example, fixed connections, removable connections, or integral connections; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In the description of the present invention, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In the present invention, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (10)

1. A method of repairing a worn component, comprising:
scanning a worn part to obtain point cloud data of the worn part;
fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part;
repairing a worn region of the worn part based on the wear profile and the wear profile.
2. The method of repairing a worn component of claim 1, wherein said repairing a worn region of the worn component based on the wear profile and the wear profile comprises:
acquiring a section line of the wear section according to the section of the wear profile, which is perpendicular to the wear section, and the wear section;
acquiring a single-pass cladding morphology according to the section line of the wear section;
and repairing the worn area of the worn part according to the single-pass cladding morphology.
3. The method for repairing a worn part according to claim 2, wherein the obtaining of the single pass cladding morphology according to the section line of the worn section comprises:
acquiring a function of a section line of the wear section;
acquiring the width of the single-pass cladding morphology and the height of the single-pass cladding morphology according to the function of the section line of the wear section;
and acquiring the single-pass cladding morphology according to the function of the section line of the wear section, the width of the single-pass cladding morphology and the height of the single-pass cladding morphology.
4. The method for repairing a worn part according to claim 3, wherein the obtaining of the width of the single pass cladding feature and the height of the single pass cladding feature as a function of the section line of the worn section comprises:
the function of the section line of the wear profile is a parabolic function, and the parabolic function is as follows:
Fi(x)＝aix2+bix+ci；
wherein, ai＝-4h/w2，bi＝4h/w，ci＝0；
h is the height of the single-pass cladding morphology, and w is the width of the single-pass cladding morphology.
5. The method of repairing a worn part of claim 3, wherein repairing a worn region of the worn part according to the single pass clad topography comprises:
acquiring a plurality of track points of the laser equipment according to the wear section and the height of the single-channel cladding appearance;
establishing a repair path of the laser equipment according to the plurality of track points;
and controlling laser equipment to repair the worn area of the worn part according to the single-pass cladding morphology and the repair path.
6. The method of repairing a worn component of claim 5, wherein controlling the laser device to repair a worn region of the worn component comprises:
acquiring a curvature factor of the wear section according to the Gaussian curvature and the average curvature of the wear section;
adjusting the emission direction of a laser gun of the laser device to be a normal direction of the wear section at the position where the curvature factor is minimum;
and controlling a laser gun to melt a repair material in the wear profile according to the single-pass cladding appearance and the repair path so as to fill the repair material in the wear profile.
7. The method of repairing a worn part according to any one of claims 1 to 6, wherein after the repairing of the worn region of the worn part according to the wear profile and the wear profile, the method of repairing a worn part further comprises:
detecting the surface flatness of the repaired wear area;
judging whether the worn area is repaired or not according to the surface flatness of the worn area;
in the event that the worn area repair is incomplete, the worn part is scanned again.
8. The method of repairing a worn part of any one of claims 1 to 6, the fitting a wear profile and a wear profile of the worn part from the point cloud data of the original part and the point cloud data of the worn part comprising:
and fitting the wear profile and the wear section of the wear part according to the point cloud data of the original part and the point cloud data of the wear part and based on a non-uniform rational spline.
9. A wear part repair apparatus, comprising:
a memory configured to store executable instructions;
a processor configured to execute stored instructions to implement a method of repairing a worn part as claimed in any one of claims 1 to 8.
10. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out a method for repairing a worn part according to any one of claims 1 to 8.
CN202010930788.1A 2020-09-07 2020-09-07 Method, apparatus and computer-readable storage medium for repairing worn parts Pending CN112132161A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202010930788.1A CN112132161A (en) 2020-09-07 2020-09-07 Method, apparatus and computer-readable storage medium for repairing worn parts

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202010930788.1A CN112132161A (en) 2020-09-07 2020-09-07 Method, apparatus and computer-readable storage medium for repairing worn parts

Publications (1)

Publication Number Publication Date
CN112132161A true CN112132161A (en) 2020-12-25

Family

ID=73847423

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202010930788.1A Pending CN112132161A (en) 2020-09-07 2020-09-07 Method, apparatus and computer-readable storage medium for repairing worn parts

Country Status (1)

Country Link
CN (1) CN112132161A (en)

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103488832A (en) * 2013-09-23 2014-01-01 大连理工大学 Geometry repair method for damaged area of complex curved surface part
CN104573191A (en) * 2014-12-18 2015-04-29 西安工业大学 Rapid remanufacturing and molding method for damaged weapon equipment parts in wartime
CN105349995A (en) * 2015-12-14 2016-02-24 西安文理学院 Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade
CN105583570A (en) * 2016-02-23 2016-05-18 一汽-大众汽车有限公司 Sharp ridge repair method for automobile stamping mould
US9824453B1 (en) * 2015-10-14 2017-11-21 Allstate Insurance Company Three dimensional image scan for vehicle
US20180373225A1 (en) * 2017-06-23 2018-12-27 General Electric Company Systems and methods for automated welding
CN111435400A (en) * 2018-12-26 2020-07-21 沈阳新松机器人自动化股份有限公司 Part repairing method and device and 3D printer
CN112132160A (en) * 2020-09-07 2020-12-25 桂林电子科技大学 Method, apparatus and computer-readable storage medium for repairing damaged parts

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103488832A (en) * 2013-09-23 2014-01-01 大连理工大学 Geometry repair method for damaged area of complex curved surface part
CN104573191A (en) * 2014-12-18 2015-04-29 西安工业大学 Rapid remanufacturing and molding method for damaged weapon equipment parts in wartime
US9824453B1 (en) * 2015-10-14 2017-11-21 Allstate Insurance Company Three dimensional image scan for vehicle
CN105349995A (en) * 2015-12-14 2016-02-24 西安文理学院 Laser-cladding cobalt-base alloy powder and repairing method for repairing damaged expander blade
CN105583570A (en) * 2016-02-23 2016-05-18 一汽-大众汽车有限公司 Sharp ridge repair method for automobile stamping mould
US20180373225A1 (en) * 2017-06-23 2018-12-27 General Electric Company Systems and methods for automated welding
CN111435400A (en) * 2018-12-26 2020-07-21 沈阳新松机器人自动化股份有限公司 Part repairing method and device and 3D printer
CN112132160A (en) * 2020-09-07 2020-12-25 桂林电子科技大学 Method, apparatus and computer-readable storage medium for repairing damaged parts

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
JUN WU等: "Adaptive Positioning Repair Method for Aero-Engine Blades by Using Speckle Vision Measurement", 《IEEE ACCESS》 *
李聪聪: "基于流线场的复杂曲面激光熔覆路径优化方法研究", 《中国博士学位论文全文数据库_工程科技Ⅰ辑》 *
陈冬武: "逆向工程和激光技术在叶轮修复中的应用", 《中国优秀硕士学位论文全文数据库_工程科技Ⅱ辑》 *

Similar Documents

Publication Publication Date Title
Ahlers et al. 3D printing of nonplanar layers for smooth surface generation
Yilmaz et al. A repair and overhaul methodology for aeroengine components
US9856629B1 (en) Lip shroud for cast lip on a work implement
JP6557355B2 (en) Method for producing three-dimensional shaped member
EP3084347B1 (en) Method for carrying out and checking a machining step on a workpiece
JP5174678B2 (en) APPARATUS AND METHOD FOR FINAL PROCESSING A FORMING TOOL FOR A BODY SHEET SHEET
EP3366883A1 (en) Methods and system for turbine component repair with additive manufacturing
Gao et al. Investigation of a 3D non‐contact measurement based blade repair integration system
EP3202529B1 (en) Repair method for turbine vanes, repaired turbine vane and repair system for repairing turbine vanes
US20060293906A1 (en) Method of developing a plan for replacing a product component using a scanning process
CN109202378B (en) Increasing and decreasing composite intelligent repair method for metal parts
CN104674210A (en) Workpiece laser automatic repair method
CN104249221B (en) The method of processing mould surface by using laser
CN104484507A (en) Part remanufacturing method based on reverse engineering
CN112663042A (en) Trajectory planning method for laser material increase repair
DE112008002259T5 (en) A calibration method for laser processing by forming a fiducial mark on a workpiece and measuring the offset of that fiducial from a reference point
US7720649B2 (en) Reverse engineering method for disk and blade attachments
CN112132161A (en) Method, apparatus and computer-readable storage medium for repairing worn parts
CN112711795B (en) Reverse modeling method of control surface honeycomb structural member suitable for remanufacturing and repairing
JP2004001226A5 (en)
CN111435400A (en) Part repairing method and device and 3D printer
CN110543709B (en) Laser cladding interference detection and track correction method for complex parts
Li et al. Fixture configuration design for sheet metal assembly with laser welding: a case study
CN112132160A (en) Method, apparatus and computer-readable storage medium for repairing damaged parts
KR20220100284A (en) Simultaneous 2D and 3D Design in 2D Working Environments for Ship Design

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
RJ01 Rejection of invention patent application after publication
RJ01 Rejection of invention patent application after publication

Application publication date: 20201225