CN111347052A - Part repairing method and device - Google Patents
Part repairing method and device Download PDFInfo
- Publication number
- CN111347052A CN111347052A CN202010237246.6A CN202010237246A CN111347052A CN 111347052 A CN111347052 A CN 111347052A CN 202010237246 A CN202010237246 A CN 202010237246A CN 111347052 A CN111347052 A CN 111347052A
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- Prior art keywords
- repaired
- model
- missing
- surface parameters
- module
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
- B22F10/20—Direct sintering or melting
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y10/00—Processes of additive manufacturing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y50/00—Data acquisition or data processing for additive manufacturing
- B33Y50/02—Data acquisition or data processing for additive manufacturing for controlling or regulating additive manufacturing processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
- B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
- B22F7/062—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts
- B22F2007/068—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools involving the connection or repairing of preformed parts repairing articles
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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
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention provides a part repairing method and a device thereof. The method belongs to the technical field of part repair, wherein the method comprises the steps of constructing a standard model; measuring surface parameters of a part to be repaired; comparing the surface parameters of the part to be repaired with the standard model to obtain a missing model; and 3D printing the difference part of the repaired part according to the missing model. The device comprises: an identification module: acquiring surface parameters of a part to be repaired; a storage module: inputting and storing surface parameters of the standard model; a comparison module: comparing the standard model parameters with the surface parameters of the part to be repaired to obtain a missing model and sending the missing model to an execution module; an execution module: and repairing the surface parameters of the part to be repaired according to the missing model. The invention solves the problems of long part repairing time and inconvenient operation, and greatly shortens the part repairing time.
Description
Technical Field
The invention relates to the technical field of part repair, in particular to a part repair method and a repair device.
Background
The 3D printing tool has the advantages of efficient forming of a complex structure, integration realization, excellent mechanical property of a finished product and the like. Especially, the metal 3D printing has obvious effect on the aspects of shortening the research and development period and the realization period of new products.
Laser/structured light 3D scanning is also widely used in current part machining, and is commonly used for measuring part dimensions and part reverse engineering. And the method also plays an important role in the fields of landform mapping, digital cities and the like.
In the industrial production process, the damaged parts of the equipment are directly replaced generally, and the efficiency is ensured. However, for some parts with higher precision and less frequent replacement or more expensive parts, no fittings are generally arranged due to cost; in addition, for expensive parts, manufacturers can start production after receiving orders, and the delivery cycle is long and the price is high; resulting in long waiting time of the parts and affecting the production. In some fields, manual repair is adopted, for example, repair of a stamping die often adopts a manual welding and polishing or finish machining mode, long repair time is needed, a technician has good experience to judge rough missing conditions, and complex parts have many places, and a polishing tool is inconvenient to operate and inconvenient to repair.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a part repairing method, which solves the problems of long part repairing time and inconvenient operation in the prior art.
According to an embodiment of the present invention, a part repair method includes the steps of:
constructing a standard model;
acquiring surface parameters of a part to be repaired;
comparing the surface parameters of the part to be repaired with the standard model to obtain a missing model;
and 3D printing the difference part of the repaired part according to the missing model.
A part repairing device is characterized by comprising
An identification module: acquiring surface parameters of a part to be repaired;
a storage module: inputting and storing surface parameters of the standard model;
a comparison module: comparing the surface parameters of the part to be repaired with the standard model parameters to obtain a missing model and sending the missing model to an execution module;
an execution module: and repairing the surface parameters of the part to be repaired according to the missing model.
The technical principle of the invention is as follows: and comparing the workpiece to be repaired with the standard model to obtain a missing model, and then automatically repairing. The repair may be done automatically by 3D printing.
Compared with the prior art, the invention has the following beneficial effects: the method utilizes the comparison between the model to be repaired and the standard model, repairs in automatic repairing modes such as 3D printing and the like, is efficient and stable, and greatly shortens the waiting time. Meanwhile, the automatic repairing mode can prevent human errors, reduce the requirements on operators and save manpower.
Drawings
Fig. 1 is a schematic diagram of a process of obtaining a missing model according to an embodiment of the present invention.
Fig. 2 is a schematic diagram of a repair process according to an embodiment of the present invention.
Detailed Description
The technical solution of the present invention is further explained with reference to the drawings and the embodiments.
As shown in fig. 1, an embodiment of the present invention provides a part repairing method, including the following steps:
s1: constructing a standard model;
s2: measuring surface parameters of a part to be repaired;
s3: comparing the surface parameters of the part to be repaired with the standard model to obtain a missing model;
s4: and 3D printing the difference part of the repaired part according to the missing model.
Wherein, steps S1 and S2 can be interchanged, and the working principle of this embodiment is: and obtaining the model of the missing part and repairing the model by comparing the model to be repaired with the standard model, wherein a published common 3D model comparison algorithm can be used during obtaining. A plurality of marking points can be arranged on the standard model; after the surface parameters of the part to be repaired are obtained, a model formed by the mark points which are not covered by the surface parameters of the part to be repaired and the difference points between the surface of the part to be repaired and the standard model is a missing model, and the interval between the mark points is small enough to ensure the precision. After the missing model is obtained, the repairing is finished by utilizing 3D printing, the limitation of a processing mode is avoided, and the repairing can be finished efficiently and stably. The whole process does not need manual judgment and operation, has small human error and high efficiency, and can be repaired when some people are inconvenient to reach.
When the method is used specifically, the mode of acquiring the surface parameters of the part to be repaired is laser scanning or structured light scanning. At present, the two modes are more efficient and accurate in obtaining the surface parameters of the parts, and are more suitable for the method.
According to another embodiment of the present invention, as shown in fig. 2, the method for repairing a part further includes performing finish machining processes such as turning, grinding, polishing, etc. on the repaired part. At present, when 3D printing is performed, the precision is different from that of a high-precision numerical control lathe, therefore, when machining is performed, extra machining can be performed, a certain machining allowance is reserved, and then the machining allowance is removed by the numerical control lathe, so that a repaired product achieves the same precision as the numerical control lathe. The machining allowance may cover a portion of the undamaged surface for machining. For some parts which are deformed but not worn, the extra part is originally processed, and the machining is more suitable for machining some allowance.
The 3D printing is additive manufacturing, and if the damaged part of the part is not firm, the damaged part can easily fall off from the damaged part after machining, so that the surface fragile part of the part to be repaired is cleaned before the surface parameters of the part to be repaired are measured. Partial cutting or surface polishing can be generally carried out according to experience, so that the firmness of the material increase foundation can be ensured, and the stability of the repaired part can be ensured.
In another aspect, the above method further relates to a component repairing apparatus, including:
an identification module: acquiring surface parameters of a part to be repaired;
a storage module: inputting and storing surface parameters of the standard model;
a comparison module: comparing the standard model parameters with the surface parameters of the part to be repaired to obtain a missing model and sending the missing model to an execution module;
an execution module: and repairing the surface parameters of the part to be repaired according to the missing model.
The working principle of the device is as follows: the comparison module is respectively connected with the identification module, the storage module and the execution module; the method comprises the steps of firstly inputting a standard model through a storage module, then obtaining surface parameters of a part to be repaired through an identification module, then comparing the standard model and the surface parameters through a comparison module, determining a missing part, sending the missing part to an execution module, and then repairing the model to be repaired according to the missing model through the execution module. The standard model can be obtained through a 3D design model, the identification module is connected with the storage module at the moment, and the obtained model exists in a triangular patch or free surface model form. Data entry and storage is a common function of memory modules. And when the comparison module is used for comparison, the obtained surface parameters of the part to be repaired are compared with the comparison module to form a 3D model of the missing part. And the execution module carries out patching according to the 3D model of the missing part. At present, a more suitable and efficient identification mode is laser/structured light 3D scanning identification.
In a preferred embodiment of the present invention, the execution module performs repair by 3D printing. Worn or deformed portions of the part tend to exhibit irregular shapes. 3D printing has the advantages of high efficiency and strong structure adaptability, and can directly process missing models on parts to be repaired, so that the whole repairing process becomes more efficient and accurate.
In another embodiment of the device, an increment module is arranged between the execution module and the comparison module, the increment module adds a machining allowance model on the surface of the part to be repaired, which is supplemented with the missing model, and the missing model and the machining allowance model are machined simultaneously during 3D printing. Namely, after the missing model is printed in a 3D mode, the execution module prints one more layer of material on the repaired part and the part near the repaired part, so that numerical control machining can be carried out for fine machining, and the accuracy after final repair is guaranteed.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (8)
1. A method of repairing a part, comprising: the method comprises the following steps:
constructing a standard model;
measuring surface parameters of a part to be repaired;
comparing the surface parameters of the part to be repaired with the standard model to obtain a missing model;
and 3D printing the difference part of the repaired part according to the missing model.
2. A part repair method as set forth in claim 1, wherein: the method for acquiring the surface parameters of the part to be repaired is laser/structured light 3D scanning.
3. A part repair method according to claim 2, further comprising finishing the repaired part, and reserving a machining allowance during 3D printing.
4. A part repair method according to claim 1, wherein the fragile part of the surface of the part to be repaired is cleaned before the surface parameters of the part to be repaired are measured.
5. A part repairing device is characterized by comprising
An identification module: acquiring surface parameters of a part to be repaired;
a storage module: inputting and storing surface parameters of the standard model;
a comparison module: comparing the standard model parameters with the surface parameters of the part to be repaired to obtain a missing model and sending the missing model to an execution module;
an execution module: and repairing the surface parameters of the part to be repaired according to the missing model.
6. The parts repair apparatus of claim 5, wherein the identification module is identified by laser/structured light scanning.
7. The parts repair apparatus of claim 5, wherein the execution module performs the repair by 3D printing.
8. The part repairing apparatus according to claim 7, wherein an increment module is provided between the execution module and the comparison module, the increment module adds a machining allowance model to a surface of the part to be repaired to which the missing model is added, and the missing model and the machining allowance model are machined simultaneously in 3D printing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010237246.6A CN111347052A (en) | 2020-03-30 | 2020-03-30 | Part repairing method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010237246.6A CN111347052A (en) | 2020-03-30 | 2020-03-30 | Part repairing method and device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111347052A true CN111347052A (en) | 2020-06-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010237246.6A Pending CN111347052A (en) | 2020-03-30 | 2020-03-30 | Part repairing method and device |
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| CN (1) | CN111347052A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN204594444U (en) * | 2015-03-03 | 2015-08-26 | 淮安信息职业技术学院 | Part defect repair data harvester |
| CN105127420A (en) * | 2015-05-04 | 2015-12-09 | 航星利华(北京)科技有限公司 | Method for repairing metal parts through diffuse printing lasers |
| CN105154870A (en) * | 2015-09-01 | 2015-12-16 | 广东工业大学 | Metal part remanufacturing method adopting stress control and 3D printing |
| CN106271364A (en) * | 2016-08-25 | 2017-01-04 | 芜湖思瑞迪三维科技有限公司 | A kind of local route repair method based on 3 D-printing |
| US20170298580A1 (en) * | 2013-06-23 | 2017-10-19 | Robert A. Flitsch | Methods and apparatus for mobile additive manufacturing of advanced structures and roadways |
| CN110315072A (en) * | 2019-06-20 | 2019-10-11 | 共享智能铸造产业创新中心有限公司 | The method for repairing damaged metal parts |
| CN110328848A (en) * | 2019-06-18 | 2019-10-15 | 沈阳精合数控科技开发有限公司 | A kind of laser repair method and device |
-
2020
- 2020-03-30 CN CN202010237246.6A patent/CN111347052A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20170298580A1 (en) * | 2013-06-23 | 2017-10-19 | Robert A. Flitsch | Methods and apparatus for mobile additive manufacturing of advanced structures and roadways |
| CN204594444U (en) * | 2015-03-03 | 2015-08-26 | 淮安信息职业技术学院 | Part defect repair data harvester |
| CN105127420A (en) * | 2015-05-04 | 2015-12-09 | 航星利华(北京)科技有限公司 | Method for repairing metal parts through diffuse printing lasers |
| CN105154870A (en) * | 2015-09-01 | 2015-12-16 | 广东工业大学 | Metal part remanufacturing method adopting stress control and 3D printing |
| CN106271364A (en) * | 2016-08-25 | 2017-01-04 | 芜湖思瑞迪三维科技有限公司 | A kind of local route repair method based on 3 D-printing |
| CN110328848A (en) * | 2019-06-18 | 2019-10-15 | 沈阳精合数控科技开发有限公司 | A kind of laser repair method and device |
| CN110315072A (en) * | 2019-06-20 | 2019-10-11 | 共享智能铸造产业创新中心有限公司 | The method for repairing damaged metal parts |
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Application publication date: 20200630 |
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