CN114750003A - Part surface local paint removing method, system and equipment - Google Patents
Part surface local paint removing method, system and equipment Download PDFInfo
- Publication number
- CN114750003A CN114750003A CN202210412065.1A CN202210412065A CN114750003A CN 114750003 A CN114750003 A CN 114750003A CN 202210412065 A CN202210412065 A CN 202210412065A CN 114750003 A CN114750003 A CN 114750003A
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- Prior art keywords
- paint
- paint layer
- polishing
- area
- sand
- Prior art date
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- Pending
Links
- 239000003973 paint Substances 0.000 title claims abstract description 145
- 238000000034 method Methods 0.000 title claims abstract description 37
- 238000005498 polishing Methods 0.000 claims abstract description 58
- 239000004576 sand Substances 0.000 claims abstract description 36
- 239000011159 matrix material Substances 0.000 claims abstract description 15
- 230000002633 protecting effect Effects 0.000 claims abstract description 15
- 238000004140 cleaning Methods 0.000 claims abstract description 10
- 230000006378 damage Effects 0.000 claims description 22
- 238000000227 grinding Methods 0.000 claims description 21
- 239000004922 lacquer Substances 0.000 claims description 12
- 239000002390 adhesive tape Substances 0.000 claims description 11
- 239000011248 coating agent Substances 0.000 claims description 11
- 238000000576 coating method Methods 0.000 claims description 11
- 230000008439 repair process Effects 0.000 claims description 11
- 229920001971 elastomer Polymers 0.000 claims description 9
- 239000005060 rubber Substances 0.000 claims description 9
- 230000000007 visual effect Effects 0.000 claims description 9
- 238000005520 cutting process Methods 0.000 claims description 8
- 238000001035 drying Methods 0.000 claims description 6
- 238000007664 blowing Methods 0.000 claims description 5
- 238000004590 computer program Methods 0.000 claims description 5
- 230000001788 irregular Effects 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 5
- 230000001590 oxidative effect Effects 0.000 claims description 4
- 230000001681 protective effect Effects 0.000 claims description 4
- 238000005406 washing Methods 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000002320 enamel (paints) Substances 0.000 claims description 2
- 230000003749 cleanliness Effects 0.000 abstract description 9
- 230000008569 process Effects 0.000 abstract description 7
- 229920003051 synthetic elastomer Polymers 0.000 abstract description 6
- 239000005061 synthetic rubber Substances 0.000 abstract description 6
- 239000000428 dust Substances 0.000 abstract description 5
- 230000007547 defect Effects 0.000 abstract description 2
- 244000137852 Petrea volubilis Species 0.000 description 6
- 238000004519 manufacturing process Methods 0.000 description 6
- 239000003921 oil Substances 0.000 description 5
- 230000008901 benefit Effects 0.000 description 4
- 230000006870 function Effects 0.000 description 4
- 239000003082 abrasive agent Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 2
- JEIPFZHSYJVQDO-UHFFFAOYSA-N iron(III) oxide Inorganic materials O=[Fe]O[Fe]=O JEIPFZHSYJVQDO-UHFFFAOYSA-N 0.000 description 2
- 235000019633 pungent taste Nutrition 0.000 description 2
- 238000003860 storage Methods 0.000 description 2
- 239000000758 substrate Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000002519 antifouling agent Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000002932 luster Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 229910010271 silicon carbide Inorganic materials 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000007306 turnover Effects 0.000 description 1
- 239000011787 zinc oxide Substances 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/0092—Grinding attachments for lathes or the like
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B27/00—Other grinding machines or devices
- B24B27/033—Other grinding machines or devices for grinding a surface for cleaning purposes, e.g. for descaling or for grinding off flaws in the surface
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A part surface local paint removing method, a system and equipment comprise the following steps: determining and marking a damaged area or a suspected damaged area of a part paint layer; determining the thickness of a paint layer of a part needing paint removal at the marked position; determining the mesh number of the selected sand wiper according to the thickness of the paint layer; before the sand is used for polishing, a protection device is used for protecting a polishing area; starting polishing, and repeatedly polishing the protection area by using a sand-polished edge or a corner until the paint layer is removed and the part matrix is exposed; and removing chips generated by polishing, and then performing protection treatment of removing the paint surface. Compared with the original process method using the abrasive paper, the improved process of the invention can improve and make up the defects and shortcomings of polishing and repairing the abrasive paper, because the main component of the abrasive is the synthetic rubber, the abrasive has the function of cleaning the part and removing the dirt attached to the surface, so that the part polished and repaired by the abrasive has better surface cleanliness and is not easy to leave abrasive and dust.
Description
Technical Field
The invention belongs to the technical field of part surface paint removal, and particularly relates to a part surface local paint removal method, a part surface local paint removal system and part surface local paint removal equipment.
Background
The part that has protective paint layer when part surface inoxidizing coating is local damaged, needs to carry out local touch-up paint, for guaranteeing touch-up paint layer adhesive force, needs together get rid of the paint layer that damages skinning, swell around, and some parts still need carry out oxidation treatment to the base member of polishing the naked exposure.
The part that the texture is softer collides with hard thing, can't think whether injure the base member, need get rid of the lacquer layer and further observe, soaks to the whole chemical solution of part, washes the process method cycle of getting rid of the lacquer layer longer, is unfavorable for the smooth and easy execution of production delivery, has the risk of colliding with once more in the in-process of turnover moreover. In this case, the damaged portion needs to be partially removed from the paint layer, and the degree of damage to the part substrate needs to be checked.
In view of the above circumstances, the current technical means for implementing the specification is to locally polish a part of a paint layer to be removed by using sand paper, and the specific steps are as follows:
1. before paint repair, parts of the paint layer, such as bulges, falls and the like, are polished by No. 320 waterproof abrasive paper so as to ensure that the paint layer is firmly combined after repair;
2. removing oil and drying;
3. polishing the part to be repaired by using No. 320 waterproof abrasive paper until the part is smoothly transferred with the peripheral surface, and blowing off the polished residues by using clean compressed air;
4. Removing oil and drying;
5. if necessary, partially oxidizing, washing with cold water, and checking an oxide film;
the prior art has the following disadvantages:
1. during polishing, the surface of the part is not clean due to sand grains dropped off by the abrasive paper and fine scraps of the polished part, and the adhesion force of the repair paint is influenced because compressed air is difficult to blow off;
2. the removal of the paint layer on the concave surface or the included angle surface is difficult to operate by using sand paper, and the polishing area is easy to expand in actual operation;
3. use abrasive paper to polish and throw and repair, it is inconvenient and hard to grip.
The commercially available sand wiper is mainly used for removing rust on the surface of a part, and is not used for functional development of paint removal on the surface of the part.
Disclosure of Invention
The invention aims to provide a method, a system and equipment for locally removing paint on the surface of a part, so as to solve the problems.
In order to achieve the purpose, the invention adopts the following technical scheme:
a part surface local paint removing method comprises the following steps:
determining and marking a damaged area or a suspected damaged area of a part paint layer;
determining the thickness of a paint layer of a part needing paint removal at the marked position;
determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
before the sand is used for polishing, a protection device is used for protecting a polishing area;
Starting polishing, and repeatedly polishing the protection area by using a polishing edge or a corner until the paint layer is removed and the part matrix is exposed;
and removing chips generated by grinding, and then carrying out protection treatment of the paint removing surface.
Further, detecting the thickness of the paint layer by using a coating measuring instrument; confirm and mark out part lacquer layer damage area or suspected damage area through the vision module, it is specific:
the visual module comprises a camera and a database, the camera collects part pictures and compares the part pictures with the database standard parts, if the damage area does not exceed the paint repair limit, the part where the thickness, the flatness and the standard part pictures are inconsistent in the collected pictures is determined as a part paint layer damage area or a suspected damage area.
Further, the thickness of the paint layer is less than 0.03mm, and 240-mesh sand brush is selected; the thickness of the paint layer is more than 0.03mm, the high-temperature resistant enamel paint is wiped by 180-mesh sand, and the residual coating is wiped off by 240-mesh sand.
Further, the abrasive affected area is protected using an adhesive tape or a protective frame.
Further, manufacturing a part with better flatness, and forming a wedge-shaped plate on four sides of the plate opening, wherein the opening plate with the largest removal area is manufactured; and (3) adhering the irregular part surface to the part except for the part needing to be subjected to paint removal by using an adhesive tape.
Further, polishing an included angle surface, cutting the eraser into a wedge shape or a sheet shape, polishing by using an edge or a sharp angle, and tightly bonding the paint layer at the edge of the matrix covered by the visual paint layer with the part; the method comprises the following steps of cutting or polishing the abrasive wiper into a cylindrical shape, clamping the abrasive wiper by using a clamp, connecting the clamp with a pneumatic air gun, and polishing and removing paint on the damaged position of a paint layer of a part.
Further, the chips generated by grinding are removed: blowing the settled scraps by using clean compressed air, and sticking the residual rubber scraps and material fines by using an adhesive tape.
Further, protection treatment: removing oil and drying, partially oxidizing the polished area, washing with cold water, and inspecting the oxide film.
Further, a partial paint removing system for a part surface comprises:
the damage area determining module is used for determining and marking a damaged area or a suspected damage area of the part paint layer;
the paint layer thickness determining module is used for determining the paint layer thickness of the part needing paint removal at the marked position;
the sand wiping mesh number determining module is used for determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
the protection module is used for protecting a grinding area by adopting a protection device before grinding by using the sand brush;
the grinding module is used for repeatedly grinding the protective area by using the sand-cleaned edge or corner until the paint layer is removed and the part matrix is exposed;
And the cleaning module is used for cleaning chips generated by polishing and then performing protection treatment for removing the paint surface.
Further, a computer device comprises a memory, a processor and a computer program stored in the memory and executable on the processor, wherein the processor executes the computer program to realize the steps of the partial paint removing method for the part surface.
Compared with the prior art, the invention has the following technical effects:
compared with the original process method using the abrasive paper, the improved process of the invention can improve and make up the defects and shortcomings of polishing and repairing the abrasive paper, because the main component of the abrasive is the synthetic rubber, the abrasive has the function of cleaning the part to remove the dirt attached to the surface, so that the part polished and repaired by the abrasive has better surface cleanliness, is not easy to leave abrasive and dust, and also makes the subsequent cleaning of the part easier; the damage area is determined through the vision module, and compared with the visual judgment, the efficiency is higher, more accurate and more efficient.
Compared with the abrasive paper, the abrasive paper is more efficient, the abrasive paper can fall off after being used at first, the polishing and repairing capacity can be weakened, and the abrasive paper has the self-sharpening capacity similar to that of a grinding wheel and is very suitable for removing a paint layer;
The coating is not influenced by the position of a paint layer surface such as a concave surface or an included angle surface by slicing and sanding, so that the coating is more widely applied;
the abrasive paper is a paper sheet, the abrasive wiper is a rubber block, and the abrasive wiper is convenient to hold and labor-saving in operation experience and is more suitable for local repair;
due to the volume advantage, the abrasive wiper saves more space than abrasive paper, is more convenient to carry and is more friendly to the mobile operation of repair bench workers;
and for the painted parts, the surface cleanliness of the parts is ensured under the condition of product delivery. Because the abrasive in the abrasive wiper is wrapped in the synthetic rubber, compared with the abrasive paper, the abrasive cannot fall off when in use, and can be wrapped by the rubber to fall off together, so that the appearance cleanliness cannot be influenced; compared with sand paper, the sand paper has the advantages of no dust, no pungent taste, environmental friendliness and little harm to human bodies during sanding.
Because the part is ground by using the sand brush, the substrate cannot be obviously removed, the roughness of the surface of the part cannot be damaged, and the firm combination of the part and the repair paint can be ensured.
Detailed Description
The invention is further illustrated below:
the method aims to provide a more efficient method for locally removing the paint layer on the surface of the part under the same effect, and is a new application of the abrasive brush in removing the paint layer.
The commercial sand scrubber comprises the following main components: synthetic rubbers, incorporating hard abrasives such as zinc oxide, silicon carbide, and the like. The method is mainly applied to surface polishing, rust removal and the like of metal parts.
This application rubs the part surface lacquer layer of rubbing through the sand that uses to contain the abrasive material, finally plays the purpose that local lacquer was removed.
The specific operation scheme is as follows:
1. determining a damaged area of the paint layer or a suspected damaged area of the part, recording by a system, and marking by a marking pen;
2. and determining the thickness of the paint layer of the part needing paint removal. Parts which cannot quickly obtain the designed thickness value of the paint layer can use a coating measuring instrument to detect the thickness of the paint layer;
3. and selecting the sand wiper with proper mesh according to the thickness of the paint layer.
Through tests, the part coated with the ES 205 has the paint layer thickness of less than 0.03mm, and the efficiency of selecting 240-mesh sand wiper is higher; the thickness of the paint layer is more than 0.03mm, and the thin paint layer is firstly rubbed and polished by 180-mesh sand;
the parts coated with HKW 201 can achieve good effect by using 240-mesh sand wiper;
4. and (5) protecting the paint layer. The return stroke is great when avoiding the process of polishing, enlarges the scope of polishing, or makes the area of getting rid of the lacquer layer exceed and allow the area of repainting, or makes the attenuate of part lacquer layer, influences the part protecting effect, needs guarantee the friction scope, can use sticky tape or protecting frame to protect.
The method comprises the following steps of manufacturing a part with better flatness, manufacturing an opening plate with the largest removal area, and forming wedges on four sides of an opening of a plate material to prevent dead corners and sand scratches caused by clamping and better fit the surface of the part;
the part surface of the irregular part can be protected by using an adhesive tape except for the part needing to be removed from the paint layer;
5. and (3) carrying out hand-held abrasive wiping on the circled part by utilizing the edge or corner of the abrasive wiper until the paint layer is removed and the part matrix is exposed. And (3) polishing the included angle surface, cutting the eraser into a wedge shape or a sheet shape, and polishing by using an edge or a sharp corner.
5.1 cutting the abrasive wiper into a cylindrical shape, clamping the abrasive wiper by using a clamp, connecting the clamp with a pneumatic air gun, and polishing and removing paint on the damaged position of a paint layer of the part.
5.2 a system for automatically identifying damaged areas of a paint layer and automatically polishing and removing the paint.
Ensuring that the bulges and the dropped paint layer on the surface of the part are completely removed, and enabling the paint layer to be tightly adhered to the part by visually observing the edge of the paint layer covering the matrix;
6. blowing away settled scraps after polishing by clean compressed air, and sticking off residual rubber scraps and material fines by using an adhesive tape to ensure the surface cleanliness of the part;
7. removing oil and drying;
8. if necessary, partially oxidizing, washing with cold water, and checking an oxide film;
Example 1:
a part surface local paint removing method comprises the following steps:
determining and marking and recording a damaged area or a suspected damaged area of a part paint layer;
determining the thickness of a paint layer of a part needing paint removal at the marked position;
detecting the thickness of the paint layer by using a coating measuring instrument; confirm and mark out part lacquer layer damaged area or suspected damaged area through the vision module, it is specific:
the visual module comprises a camera and a database, the camera collects part pictures and compares the part pictures with standard parts in the database, and places with inconsistent thickness, flatness and standard part pictures in the collected pictures are determined as damaged areas or suspected damaged areas of the paint layer of the part.
Determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
before the sand is used for polishing, a protection device is used for protecting a polishing area;
starting polishing, and repeatedly polishing the protection area by using a sand-polished edge or a corner until the paint layer is removed and the part matrix is exposed;
and removing chips generated by polishing, and then performing protection treatment of removing the paint surface.
The main component of the abrasive wiper is synthetic rubber, so that the abrasive wiper has the function of cleaning parts to remove dirt attached to the surfaces, and the parts repaired by the abrasive wiper have better surface cleanliness, are not easy to leave abrasive materials and dust, and are easier to clean subsequently; the damage area is determined through the vision module, and compared with the visual judgment, the efficiency is higher and more accurate.
Example 2:
a part surface local paint removing method comprises the following steps:
determining and marking a damaged area or a suspected damaged area of a part paint layer;
detecting the thickness of the paint layer by using a coating measuring instrument; confirm and mark out part lacquer layer damaged area or suspected damaged area through the vision module, it is specific:
the visual module comprises a camera and a database, the camera acquires part pictures and compares the part pictures with database standard parts, and places with inconsistent thickness, flatness and standard part pictures in the acquired pictures are determined as damaged areas or suspected damaged areas of the part paint layer.
Determining the thickness of a paint layer of a part needing paint removal at the marked position;
determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
before the sand is used for polishing, a protection device is used for protecting a polishing area;
manufacturing a part with better flatness, manufacturing an opening plate with the largest removal area, and forming wedges on four sides of the opening of the plate; and (3) adhering the irregular part surface to the part except the part needing to remove the paint layer by using an adhesive tape.
Starting polishing, and repeatedly polishing the protection area by using a sand-polished edge or a corner until the paint layer is removed and the part matrix is exposed; and (3) polishing the included angle surface, cutting the eraser into a wedge shape or a sheet shape, polishing by using an edge or a sharp corner, and tightly bonding the paint layer at the edge of the matrix covered by the visual paint layer with the part.
And removing chips generated by grinding, and then carrying out protection treatment of the paint removing surface.
The abrasive paper is a paper sheet, the abrasive wiper is a rubber block, and the abrasive wiper is convenient to hold and labor-saving in operation experience and is more suitable for local repair;
due to the volume advantage, the abrasive wiper saves more space than abrasive paper, is more convenient to carry and is more friendly to the mobile operation of repair bench workers;
and for the painted parts, the surface cleanliness of the parts is ensured under the condition of product delivery. Because the abrasive in the abrasive wiper is wrapped in the synthetic rubber, compared with the abrasive paper, the abrasive cannot fall off when in use, and can be wrapped by the rubber to fall off together, so that the appearance cleanliness cannot be influenced; compared with sand paper, the sand paper has the advantages of no dust and no pungent taste during sanding, is more environment-friendly and has little harm to human bodies.
Example 3:
localized removal of surface coating of alloy parts coated with HKW 201
1. And (6) visually checking. Determining a damaged area of the paint layer or a suspected damaged area of the part, and marking and circling the damaged area or the suspected damaged area of the part by using a marking pen;
2. and (5) protecting the paint layer. The return stroke is great when avoiding the process of polishing, enlarges the scope of polishing, or makes the area of getting rid of the lacquer layer exceed and allow the area of repainting, or makes the attenuate of part lacquer layer, influences the part protecting effect, needs guarantee the friction scope, can use sticky tape or protecting frame to protect.
The parts with better planeness are manufactured into the opening plate with the largest removal area, the four edges of the opening of the plate are wedge-shaped, so that dead corners and sand scratches caused by clamping are prevented from being formed, and the surface of the part can be better attached;
the part surface of the irregular part can be protected by using an adhesive tape except for the part needing to be removed from the paint layer;
3. and (6) polishing. And (3) further polishing by using the handheld abrasive wiper with 240 meshes, and repeatedly polishing the circled part by using the edge or one corner of the abrasive wiper until the paint layer is removed and the part matrix is exposed. Polishing the included angle surface, cutting the eraser into a wedge shape or a sheet shape, and polishing by using an edge or a sharp corner until the metallic luster is exposed;
ensuring that the bulges and the dropped paint layer on the surface of the part are completely removed, and enabling the paint layer to be tightly adhered to the part by visually observing the edge of the paint layer covering the matrix;
4. blowing away settled scraps after polishing by clean compressed air, and sticking off residual rubber scraps and material fines by using an adhesive tape to ensure the surface cleanliness of the part;
5. removing oil and drying;
in another embodiment of the present invention, a system for removing paint locally on a surface of a part is provided, which can be used to implement the above method for removing paint locally on a surface of a part, specifically, the system includes:
the damage area determining module is used for determining and marking a damaged area or a suspected damage area of the part paint layer;
The paint layer thickness determining module is used for determining the thickness of a paint layer of a part needing paint removal at the marked position;
the sand wiping mesh number determining module is used for determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
the protection module is used for protecting a grinding area by adopting a protection device before grinding by using the sand;
the grinding module is used for repeatedly grinding the protection area by using the grinding edge or corner until the paint layer is removed and the part matrix is exposed;
and the cleaning module is used for cleaning chips generated by polishing and then performing protection treatment for removing the paint surface.
The division of the modules in the embodiments of the present invention is schematic, and is only a logical function division, and in actual implementation, there may be another division manner, and in addition, each functional module in each embodiment of the present invention may be integrated in one processor, or may exist alone physically, or two or more modules are integrated in one module. The integrated module can be realized in a hardware mode, and can also be realized in a software functional module mode.
In yet another embodiment of the present invention, a computer device is provided that includes a processor and a memory for storing a computer program comprising program instructions, the processor for executing the program instructions stored by the computer storage medium. The Processor may be a Central Processing Unit (CPU), or may be other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable gate array (FPGA) or other Programmable logic device, discrete gate or transistor logic device, discrete hardware component, etc., which is a computing core and a control core of the terminal, and is specifically adapted to load and execute one or more instructions in a computer storage medium to implement a corresponding method flow or a corresponding function; the processor described in the embodiments of the present invention may be used for the operation thereof.
Finally, it should be noted that: although the present invention has been described in detail with reference to the above embodiments, it should be understood by those skilled in the art that: modifications and equivalents may be made to the embodiments of the invention without departing from the spirit and scope of the invention, which is to be covered by the claims.
Claims (10)
1. A part surface local paint removing method is characterized by comprising the following steps:
determining and marking a damaged area or a suspected damaged area of a part paint layer;
determining the thickness of a paint layer of a part needing paint removal at the marked position;
determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
before the sand is used for polishing, a protection device is used for protecting a polishing area;
starting polishing, and repeatedly polishing the protection area by using a sand-polished edge or a corner until the paint layer is removed and the part matrix is exposed;
and removing chips generated by polishing, and then performing protection treatment of removing the paint surface.
2. The method for partially removing paint on the surface of the part according to claim 1, wherein the thickness of the paint layer is detected by using a coating measuring instrument; confirm and mark out part lacquer layer damage area or suspected damage area through the vision module, it is specific:
The visual module comprises a camera and a database, the camera acquires part pictures and compares the part pictures with database standard parts, if the damage area does not exceed the paint repair limit, the place where the thickness, the flatness and the standard part pictures are inconsistent in the acquired pictures is determined as a part paint layer damage area or a suspected damage area.
3. The method for locally removing paint on the surface of a part according to claim 1, wherein the thickness of a paint layer is less than 0.03mm, and a 240-mesh sand wiper is selected; the thickness of the paint layer is more than 0.03mm, the high-temperature resistant enamel paint is polished by 180-mesh sand, and the residual coating is removed by using 240-mesh sand.
4. The method for removing paint locally on the surface of a part according to claim 1, characterized in that an adhesive tape or a protective frame is used for protecting the grinding affected area.
5. The method for locally removing paint on the surface of the part according to claim 4, wherein the part with better flatness is manufactured into an opening plate with the largest removal area, and four sides of the opening of the plate form a wedge shape; and (3) adhering the irregular part surface to the part except the part needing to remove the paint layer by using an adhesive tape.
6. The method for partially removing paint on the surface of a part according to claim 1, wherein the grinding of the included angle surface is implemented by cutting a rubber into a wedge shape or a sheet shape, grinding with an edge or a sharp corner, and covering the paint layer at the edge of the matrix by visual paint layer to be tightly adhered with the part (without a gap); the method comprises the steps of cutting or polishing the abrasive wiper into a cylindrical shape, clamping the abrasive wiper by using a clamp, connecting the clamp with a pneumatic air gun, and polishing and removing paint on the damaged position of a paint layer of the part.
7. The method for locally removing paint on the surface of a part as claimed in claim 1, wherein the chips generated by grinding are removed: blowing the buffed settled scraps by using clean compressed air, and sticking the residual rubber scraps and material fines by using an adhesive tape.
8. The method for removing paint locally on the surface of a part as claimed in claim 1, characterized in that the protection treatment comprises: removing oil and drying, partially oxidizing the polished area, washing with cold water, and inspecting the oxide film.
9. A system for locally removing paint from a surface of a part, comprising:
the damage area determining module is used for determining and marking a damaged area or a suspected damage area of the part paint layer;
the paint layer thickness determining module is used for determining the paint layer thickness of the part needing paint removal at the marked position;
the sand wiping mesh number determining module is used for determining the mesh number of the selected sand wiper according to the thickness of the paint layer;
the protection module is used for protecting a grinding area by adopting a protection device before grinding by using the sand brush;
the grinding module is used for repeatedly grinding the protective area by using the sand-cleaned edge or corner until the paint layer is removed and the part matrix is exposed;
and the cleaning module is used for cleaning chips generated by polishing and then performing protection treatment of removing the paint surface.
10. Computer arrangement comprising a memory, a processor and a computer program stored in the memory and executable on the processor, characterized in that the processor when executing the computer program carries out the steps of a method for partial removal of paint from a surface of a part as claimed in any one of claims 1 to 8.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412065.1A CN114750003A (en) | 2022-04-19 | 2022-04-19 | Part surface local paint removing method, system and equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210412065.1A CN114750003A (en) | 2022-04-19 | 2022-04-19 | Part surface local paint removing method, system and equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114750003A true CN114750003A (en) | 2022-07-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210412065.1A Pending CN114750003A (en) | 2022-04-19 | 2022-04-19 | Part surface local paint removing method, system and equipment |
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| CN (1) | CN114750003A (en) |
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