CN115786909B - Guide laser cladding repairing method - Google Patents
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Abstract
The invention provides a guide and guard laser cladding repairing method, which comprises the steps of constructing a guide and guard three-dimensional model to be repaired by adopting a three-dimensional scanning technology and a three-dimensional modeling technology, carrying out three-dimensional fusion on a guide and guard standard part and the guide and guard to be repaired so as to obtain a repaired three-dimensional model, dividing the repaired three-dimensional model into a plurality of square blocks, fully covering the repaired three-dimensional model by the plurality of square blocks, and designing power control of a laser cladding device, the use amount of cladding materials and the power control of the laser cladding device for different blocks during repairing so as to set the valve opening of protective gas and powder feeding gas, thereby realizing accurate repairing.
Description
Technical Field
The invention relates to the technical field of laser cladding, in particular to a guide and guard laser cladding repairing method.
Background
The guide means a device which is arranged in front of and behind the roll pass during the rolling process of the section steel and helps the rolled piece to enter and exit the roll pass accurately and stably according to the set direction and state. The guide can be worn in the long-term use process, so that the guide positioning is inaccurate, the guide wear is basically replaced at present, and a large number of replaced guides can only be treated as waste.
In the prior art, some parts or workpieces can be repaired by laser cladding, the laser cladding adopts high-energy laser as a heat source, metal alloy powder is used as a welding material, laser and alloy powder (or wire) synchronously act on the metal surface to quickly melt to form a molten pool, and then the molten pool is quickly solidified to form a compact, uniform and controllable-thickness metallurgical bonding layer, so that the parts or workpieces can be repaired.
For example, publication No.: the patent literature of CN103320787A discloses a repairing method for a rolling guide remanufacturing of a failed bar, which comprises the following steps: selecting a coating material; selecting laser cladding process parameters according to the laser cladding power, the light spot size, the scanning speed and the overlap joint amount; and repairing the repairing surface of the bar rolling guide by adopting the selected coating material according to the determined laser cladding process parameters and adopting a laser cladding remanufacturing technology.
And the publication number is as follows: patent document CN106077650a discloses a method for forming a guide plate by laser cladding composite hard alloy powder. Comprises the following ingredients: step one, batching: 30% -35% of Cr12MoV powder, 18% -23% of 1Cr18Mn8Ni5N powder and 15% -20% of 1Cr18Ni9Ti powder, and the balance of Fe powder, aluminum powder, magnesium powder and ferroboron powder, wherein the weight ratio of the chemical components is as follows: 1.5-2.5% of B, 0.2-0.35% of Al and 0.35-0.5% of Mg; step two, wet grinding; step three, screening and drying; and step four, forming by a 3D printer. The metal 3D printer technology adopted by the invention is used for preparing the guide plate, and the base material for 3D printing part molding is prepared by Cr12MoV powder, 1Cr18Mn8Ni5N powder and 1Cr18Ni9Ti powder, and the balance being Fe powder, aluminum powder, magnesium powder and ferroboron powder, so that the base material has one-step molding, the structural strength, the toughness and the molding relative density of microscopic crystals reach 99%, the service life of the part is effectively prolonged, the molding speed is high, and the molding precision of the profile is improved.
Because of a standard component during guide and guard, if the inside of a chute is uneven or uneven, the guide Wei Shizhun can be caused, and although the two disclosed technical means adopt a laser cladding method to repair or carry out secondary processing on the guide and guard, the guide and guard cannot be accurately controlled and processed.
Disclosure of Invention
In view of the above, the main objective of the present invention is to provide a guide laser cladding repairing method.
The technical scheme adopted by the invention is as follows:
the invention provides a guide laser cladding repairing method, which comprises the following steps:
setting a guide Wei Fangzhi on a guide placement device, setting at least one marking point position on each repairing surface of the guide, setting rotation control of the guide placement device, taking the marking point positions as references to acquire a guide three-dimensional contour and a guide three-dimensional contour coordinate set, and constructing a guide model based on the guide three-dimensional contour and the guide three-dimensional contour coordinate set;
calling a guide standard part model, fusing the guide standard part model and the guide model by taking a central point as a fusion axis, and describing and separating a fused part from an unfused part, wherein the unfused part is taken as a repairing three-dimensional model;
dividing the repairing three-dimensional model into a plurality of cube blocks, and recording the serial number of each cube block; the repair three-dimensional model is fully covered by the cube blocks, a coordinate data set of each cube block relative to a center point is recorded, and an initial position and an end position of each cube block are set based on the coordinate data set; wherein the initial position of at least one cube block is a marking point position; the cube block is used as an initial cube block of each repairing surface;
encoding a plurality of cube blocks based on an initial cube block, a coordinate data set, an initial position and an end position, so as to set the action sequence and the motion track of the laser cladding device during repairing, and set the rotation control of the guide placement device;
forming a plurality of continuous control commands for controlling the laser cladding device to move according to the set track according to the set action sequence of the laser cladding device, setting a rotation control command of the guide placement device under each control command based on the codes of the coordinate data set, and storing the control commands and the rotation control commands in a storage part of the controller;
calculating the corresponding volume of the repairing three-dimensional model in each cube block, and correspondingly calculating the usage amount of cladding materials corresponding to each block and the power control of the laser cladding device based on the volume; setting the valve opening of the shielding gas and the powder feeding gas based on the usage amount of cladding materials and the power control of the laser cladding device; the usage amount of cladding materials corresponding to each cube block, the power control of the laser cladding device, the protection gas and the valve opening of the powder feeding gas are correspondingly stored in a storage part of the controller and are correspondingly corresponding to corresponding control instructions;
the guide Wei Fangzhi is arranged on the guide placement device, the initial position of the initial block is firstly obtained by utilizing the laser positioning device, and then the controller sequentially and correspondingly calls the control command, the rotation control command, the usage amount of cladding materials, the power control of the laser cladding device, the valve opening of the shielding gas and the powder feeding gas which are set by the storage part, so that the guide is sequentially repaired according to each square block.
Further, the method for acquiring the guide three-dimensional contour coordinate set is as follows:
1) Taking the marking point positions as initial positions as references, and acquiring three-dimensional images of the guide by using a scanner;
2) Dividing the guided three-dimensional image into a plurality of blocks, and recording the position of each block;
3) Extracting each block to perform binarization processing, setting an initial boundary point of each block after the binarization processing, setting a first reference coordinate of the initial boundary point, and traversing pixels;
4) The initial boundary point is taken as a reference point, a next pixel is found along the scanning direction of the scanner, and a first reference coordinate of the initial boundary point is taken as a second reference coordinate for calibrating the next pixel; cycling until the initial boundary point is found again, and ending; obtaining the outline of each block and a corresponding reference coordinate set;
5) And merging the blocks according to the positions of the blocks to obtain a guide three-dimensional contour, and modifying the reference coordinate sets of other blocks by corresponding conversion of the reference coordinate set obtained by the first block to obtain the guide three-dimensional contour coordinate set.
Further, the marking point position is used as an initial boundary point of one block, and the block is used as an initial block.
Further, the cube blocks fully cover the edges of the repair three-dimensional model.
Further, each cube block sets a corresponding movement route of the laser cladding device according to an initial position and an end position when repairing, sets a corresponding action sequence based on the number of the cube block, associates the action sequences according to the number, and correspondingly associates a plurality of movement routes to form a movement track after associating.
Further, the method for calculating the corresponding volume of the repair three-dimensional model in each cube block is as follows:
a) A statistics unit for setting a coordinate data set;
b) Recording a repair coordinate data set of the repair three-dimensional model relative to the center point, and calculating a first number of statistical units of the repair coordinate data set based on the statistical units;
c) Recording a coordinate data set of each cube block relative to the center point; and calculating a second number of statistical units of the coordinate data set based on the statistical units;
d) And obtaining the corresponding volume of the calculated repair three-dimensional model in each cube block according to the ratio between the first number and the second number.
The method comprises the steps of constructing a guide three-dimensional model to be repaired by adopting a three-dimensional scanning technology and a three-dimensional modeling technology, carrying out three-dimensional fusion on a guide standard part and the guide to be repaired, obtaining a repaired three-dimensional model, dividing the repaired three-dimensional model into a plurality of cube blocks, fully covering the repaired three-dimensional model by the cube blocks, recording a coordinate data set of each cube block relative to a central point, setting an initial position and an end position of each cube block on the basis of the coordinate data set, and thus constructing an action sequence and a movement track of a laser cladding device during repair and setting rotation control of a guide placing device; forming a plurality of continuous control commands for controlling the laser cladding device to move according to a set track according to the set action sequence of the laser cladding device, setting a rotation control command of the guide placement device under each control command based on the coding of a coordinate data set, calculating the corresponding volume of the repairing three-dimensional model in each cube block, and correspondingly calculating the usage amount of cladding material corresponding to each block and the power control of the laser cladding device based on the volume; setting the valve opening of the shielding gas and the powder feeding gas based on the usage amount of cladding materials and the power control of the laser cladding device; the guide Wei Fangzhi is arranged on the guide placement device, the initial position of the initial block is firstly obtained by utilizing the laser positioning device, and then the controller sequentially and correspondingly calls the control command, the rotation control command, the usage amount of cladding materials, the power control of the laser cladding device, the valve opening of the shielding gas and the powder feeding gas which are set by the storage part, so that the guide is sequentially repaired according to each square block.
In the above, the valve opening of the shielding gas and the powder feeding gas is set by constructing the guide three-dimensional model and the guide repair three-dimensional model and designing the power control of the laser cladding device, the usage amount of cladding materials and the power control of the laser cladding device when different blocks are repaired, so that the accurate repair is realized.
Drawings
The following drawings are illustrative of the invention and are not intended to limit the scope of the invention, in which:
FIG. 1 is a flow chart of the method of the present invention;
fig. 2 is a schematic diagram of a cladding process according to an embodiment of the present invention.
Detailed Description
The present invention will be further described in detail with reference to the following specific examples, which are given by way of illustration, in order to make the objects, technical solutions, design methods and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1 to 2, the invention provides a guide and guard laser cladding repairing method, which adopts a three-dimensional scanning technology and a three-dimensional modeling technology to construct a guide and guard three-dimensional model to be repaired, performs three-dimensional fusion with the guide and guard to be repaired based on a guide and guard standard part to obtain a repaired three-dimensional model, divides the repaired three-dimensional model into a plurality of cube blocks, fully covers the repaired three-dimensional model by the cube blocks, records a coordinate data set of each cube block relative to a central point, and sets an initial position and an end position of each cube block based on the coordinate data set, thereby constructing an action sequence and a movement track of a laser cladding device during repairing, and setting rotation control of a guide and guard placing device; forming a plurality of continuous control commands for controlling the laser cladding device to move according to a set track according to the set action sequence of the laser cladding device, setting a rotation control command of the guide placement device under each control command based on the coding of a coordinate data set, calculating the corresponding volume of the repairing three-dimensional model in each cube block, and correspondingly calculating the usage amount of cladding material corresponding to each block and the power control of the laser cladding device based on the volume; setting the valve opening of the shielding gas and the powder feeding gas based on the usage amount of cladding materials and the power control of the laser cladding device; the guide Wei Fangzhi is arranged on the guide placement device, the initial position of the initial block is firstly obtained by utilizing the laser positioning device, and then the controller sequentially and correspondingly calls the control command, the rotation control command, the usage amount of cladding materials, the power control of the laser cladding device, the valve opening of the shielding gas and the powder feeding gas which are set by the storage part, so that the guide is sequentially repaired according to each square block.
In the above, the valve opening of the shielding gas and the powder feeding gas is set by constructing the guide three-dimensional model and the guide repair three-dimensional model and designing the power control of the laser cladding device, the usage amount of cladding materials and the power control of the laser cladding device when different blocks are repaired, so that the accurate repair is realized.
The method specifically comprises the following steps:
setting a guide Wei Fangzhi on a guide placement device, setting at least one marking point position on each repairing surface of the guide, setting rotation control of the guide placement device, taking the marking point positions as references to acquire a guide three-dimensional contour and a guide three-dimensional contour coordinate set, and constructing a guide model based on the guide three-dimensional contour and the guide three-dimensional contour coordinate set;
calling a guide standard part model, fusing the guide standard part model and the guide model by taking a central point as a fusion axis, and describing and separating a fused part from an unfused part, wherein the unfused part is taken as a repairing three-dimensional model;
dividing the repairing three-dimensional model into a plurality of cube blocks, and recording the serial number of each cube block; the repair three-dimensional model is fully covered by the cube blocks, a coordinate data set of each cube block relative to a center point is recorded, and an initial position and an end position of each cube block are set based on the coordinate data set; wherein the initial position of at least one cube block is a marking point position; the cube block is used as an initial cube block of each repairing surface;
encoding a plurality of cube blocks based on an initial cube block, a coordinate data set, an initial position and an end position, so as to set the action sequence and the motion track of the laser cladding device during repairing, and set the rotation control of the guide placement device;
forming a plurality of continuous control commands for controlling the laser cladding device to move according to the set track according to the set action sequence of the laser cladding device, setting a rotation control command of the guide placement device under each control command based on the codes of the coordinate data set, and storing the control commands and the rotation control commands in a storage part of the controller;
calculating the corresponding volume of the repairing three-dimensional model in each cube block, and correspondingly calculating the usage amount of cladding materials corresponding to each block and the power control of the laser cladding device based on the volume; setting the valve opening of the shielding gas and the powder feeding gas based on the usage amount of cladding materials and the power control of the laser cladding device; the usage amount of cladding materials corresponding to each cube block, the power control of the laser cladding device, the protection gas and the valve opening of the powder feeding gas are correspondingly stored in a storage part of the controller and are correspondingly corresponding to corresponding control instructions;
the guide Wei Fangzhi is arranged on the guide placement device, the initial position of the initial block is firstly obtained by utilizing the laser positioning device, and then the controller sequentially and correspondingly calls the control command, the rotation control command, the usage amount of cladding materials, the power control of the laser cladding device, the valve opening of the shielding gas and the powder feeding gas which are set by the storage part, so that the guide is sequentially repaired according to each square block.
In the above, the marking point is marked by using a fluorescent pen, and the shape of the marking point is set to be square, so that the fluorescent light is favorable for identification, the square is favorable for determining the initial point coordinates, for example, the center of the square or the vertex of any square is used as the initial point to record the coordinates. Furthermore, the fluorescence has obvious spots after the binarization treatment, can be obviously identified, and is beneficial to determining initial points after the binarization treatment so as to identify the contour boundary.
The application provides an embodiment for repairing a guide through a laser cladding device. Before repairing, three-dimensional modeling is carried out, and the movement track and the movement sequence of the laser cladding device during cladding, the use amount control of cladding materials, the power control of the laser cladding device, and the valve opening of the shielding gas and the powder feeding gas are obtained. The specific steps are as follows:
step 1: setting a marking point position on each repairing surface of a guide and guard by using a fluorescent pen on the guide and guard placement device according to the guide Wei Fangzhi, setting the marking point position to be square, setting the rotation control of the guide and guard placement device, and acquiring a three-dimensional image of the guide and guard by using a three-dimensional scanning device; taking the marking point positions as initial positions as references, and acquiring three-dimensional images of the guide by using a scanner; dividing the guided three-dimensional image into a plurality of blocks, and recording the position of each block; extracting each block to perform binarization processing, setting an initial boundary point of each block after the binarization processing, setting a first reference coordinate of the initial boundary point, and traversing pixels; the initial boundary point is taken as a reference point, a next pixel is found along the scanning direction of the scanner, and a first reference coordinate of the initial boundary point is taken as a second reference coordinate for calibrating the next pixel; cycling until the initial boundary point is found again, and ending; obtaining the outline of each block and a corresponding reference coordinate set; and merging the blocks according to the positions of the blocks to obtain a guide three-dimensional contour, and modifying the reference coordinate sets of other blocks by corresponding conversion of the reference coordinate set obtained by the first block to obtain a guide three-dimensional contour coordinate set, and constructing a guide model in Dauca software based on the guide three-dimensional contour and the guide three-dimensional contour coordinate set.
Step 2: and designing a guide standard part model in Daxoy software, calling the guide standard part model, fusing the guide standard part model and the guide model by taking a central point as a fusion axis, depicting and separating a fused part from an unfused part, and taking the unfused part as a repairing three-dimensional model.
Step 3: dividing the repairing three-dimensional model into a plurality of cube blocks, and recording the serial number of each cube block; the repair three-dimensional model is fully covered by the cube blocks, a coordinate data set of each cube block relative to a center point is recorded, and an initial position and an end position of each cube block are set based on the coordinate data set; wherein the initial position of at least one cube block is a marking point position; the cube block is used as an initial cube block of each repairing surface; and the cube block fully covers the edge of the repair three-dimensional model.
Step 4: encoding a plurality of cube blocks based on an initial cube block, a coordinate data set, an initial position and an end position, so as to set the action sequence and the motion track of the laser cladding device during repairing, and set the rotation control of the guide placement device; and setting a corresponding movement route of the laser cladding device according to the initial position and the end position when each cube block is repaired, setting a corresponding action sequence based on the number of the cube block, associating the action sequences according to the number, and correspondingly associating a plurality of movement routes to form a movement track after associating.
Step 5: calculating the corresponding volume of the repairing three-dimensional model in each cube block, and correspondingly calculating the usage amount of cladding materials corresponding to each block and the power control of the laser cladding device based on the volume; setting the valve opening of the shielding gas and the powder feeding gas based on the usage amount of cladding materials and the power control of the laser cladding device; the usage amount of cladding materials corresponding to each cube block, the power control of the laser cladding device, the protection gas and the valve opening of the powder feeding gas are correspondingly stored in a storage part of the controller and are correspondingly corresponding to corresponding control instructions; the method for calculating the corresponding volume of the repair three-dimensional model in each cube block is as follows:
a) A statistics unit for setting a coordinate data set;
b) Recording a repair coordinate data set of the repair three-dimensional model relative to the center point, and calculating a first number of statistical units of the repair coordinate data set based on the statistical units;
c) Recording a coordinate data set of each cube block relative to the center point; and calculating a second number of statistical units of the coordinate data set based on the statistical units;
d) And obtaining the corresponding volume of the calculated repair three-dimensional model in each cube block according to the ratio between the first number and the second number.
In the above, the statistical unit of the coordinate data set is set, and the statistical unit can take 1 cubic millimeter as one statistical unit, which is equivalent to setting the cube block to be composed of N1 cubic millimeter cube units, wherein N is more than or equal to 1000; and is an integer. For example, assuming that each cube block is 1 cubic centimeter, one cube block is formed by stacking 1000 cube units of 1 cubic millimeter, and when setting, the smaller the unit amount for the statistic unit is, the more accurate the result is, for example, the statistic unit can be 1 cubic micrometer as one statistic unit.
Step 6: referring to fig. 2, a guide 111 is placed on a guide placement device, which includes a left bracket 112 and a right bracket 109, a rotation motor 113 is provided at the left side of the left bracket 112, a guide fixing shaft 110 is connected to a motor shaft of the rotation motor 113 through the left bracket 112 through a coupling 114, and the guide 111 is fixed to the guide fixing shaft 110, wherein the right side of the guide fixing shaft 110 is connected to a bearing 108 provided in the right bracket 109.
The laser device at least comprises: a base 118, a laser cladding device 100 and a laser positioning device 119 are arranged at the lower part of the base 118, a rotating part 115 is arranged above the base 118, the rotating part 115 is used for driving the base 118 to rotate, a fixing part 116 is arranged above the rotating part 115, the fixing part 116 is used for fixing the rotating part 115, and a controller 117 is also arranged at the base 118; the controller 117 is provided with a serial port, and can be connected with a storage device or a computer through a USB;
a powder and air feeding device 104 is arranged right below the base 118, the powder and air feeding device 104 is provided with an air feeding channel 102 and a powder feeding channel 103, and the air feeding channel 102 and the powder feeding channel 103 form a channel in the powder and air feeding device 104;
when cladding is performed, the laser positioning device 119 is utilized to acquire the initial position of the initial block, and is used for forming positioning with the fluorescent marking point position, positioning data is sent to the controller 117, the controller 117 controls the laser cladding device 100 to move to the position right above the fluorescent marking point position, and then the controller 117 sequentially correspondingly calls a control command, a rotation control command, the usage amount of cladding materials, the power control of the laser cladding device 100, the valve opening of the shielding gas and the powder feeding gas set by the storage part, and sequentially repairs the guide 111 according to each square block.
In step 6, the control command, the rotation control command, the amount of cladding material used, the power control of the laser cladding apparatus 100, the valve opening of the shielding gas and the powder feeding gas, etc. formed in step 4 and step 5 may be stored in advance in a memory device, and the controller 117 may automatically read and write the stored data in the memory device, or may write the stored data in the controller 117 by a computer.
During cladding, the valve openings of the shielding gas and the powder feeding gas are set by the usage amount of the cladding material and the power control of the laser cladding device 100, which correspond to different cube blocks.
Molten material enters through the powder feeding channel 103, and the gas entering through the gas feeding channel 102 feeds the molten material to the position right above the guide 111 to form a powder flow 106, a molten pool 105 is formed on the surface of the guide 111 under the laser beam 101 of the laser cladding device 100, and the molten pool 105 is used for cladding the molten material melted at high temperature on the surface of the guide 111 to form a cladding layer 107. Wherein, the shielding gas is introduced at two sides of the laser beam 101, and has the following functions: the welding seam molten pool can be effectively protected to reduce oxidization and even avoid oxidization; the shielding gas can promote the weld pool to uniformly spread when being solidified, can effectively reduce the shielding effect of metal steam plume or plasma cloud on laser, so that the laser energy reaching the surface of a workpiece is increased, and the effective utilization rate of the laser is increased; the gas holes of the welding seam can be effectively reduced by blowing in the protective gas.
The corresponding volume of the repaired three-dimensional model in each cube block determines the thickness of the formed cladding layer, and thus the usage amount of the molten material. Different cladding materials and corresponding cladding temperatures are different, so that the laser power is different.
The foregoing description of embodiments of the invention has been presented for purposes of illustration and description, and is not intended to be exhaustive or limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the various embodiments described. The terminology used herein was chosen in order to best explain the principles of the embodiments, the practical application, or the technical improvements in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein.
Claims (6)
1. The guide laser cladding repairing method is characterized by comprising the following steps of:
setting a guide Wei Fangzhi on a guide placement device, setting at least one marking point position on each repairing surface of the guide, setting rotation control of the guide placement device, taking the marking point positions as references to acquire a guide three-dimensional contour and a guide three-dimensional contour coordinate set, and constructing a guide model based on the guide three-dimensional contour and the guide three-dimensional contour coordinate set;
calling a guide standard part model, fusing the guide standard part model and the guide model by taking a central point as a fusion axis, and describing and separating a fused part from an unfused part, wherein the unfused part is taken as a repairing three-dimensional model;
dividing the repairing three-dimensional model into a plurality of cube blocks, and recording the serial number of each cube block; the repair three-dimensional model is fully covered by the cube blocks, a coordinate data set of each cube block relative to a center point is recorded, and an initial position and an end position of each cube block are set based on the coordinate data set; wherein the initial position of at least one cube block is a marking point position; the cube block is used as an initial cube block of each repairing surface;
encoding a plurality of cube blocks based on an initial cube block, a coordinate data set, an initial position and an end position, so as to set the action sequence and the motion track of the laser cladding device during repairing, and set the rotation control of the guide placement device;
forming a plurality of continuous control commands for controlling the laser cladding device to move according to the set track according to the set action sequence of the laser cladding device, setting a rotation control command of the guide placement device under each control command based on the codes of the coordinate data set, and storing the control commands and the rotation control commands in a storage part of the controller;
calculating the corresponding volume of the repairing three-dimensional model in each cube block, and correspondingly calculating the usage amount of cladding materials corresponding to each block and the power control of the laser cladding device based on the volume; setting the valve opening of the shielding gas and the powder feeding gas based on the usage amount of cladding materials and the power control of the laser cladding device; the usage amount of cladding materials corresponding to each cube block, the power control of the laser cladding device, the protection gas and the valve opening of the powder feeding gas are correspondingly stored in a storage part of the controller and are correspondingly corresponding to corresponding control instructions;
the guide Wei Fangzhi is arranged on the guide placement device, the initial position of the initial block is firstly obtained by utilizing the laser positioning device, and then the controller sequentially and correspondingly calls the control command, the rotation control command, the usage amount of cladding materials, the power control of the laser cladding device, the valve opening of the shielding gas and the powder feeding gas which are set by the storage part, so that the guide is sequentially repaired according to each square block.
2. The guide laser cladding repair method according to claim 1, wherein the method for acquiring the guide three-dimensional contour coordinate set is as follows:
1) Taking the marking point positions as initial positions as references, and acquiring three-dimensional images of the guide by using a scanner;
2) Dividing the guided three-dimensional image into a plurality of blocks, and recording the position of each block;
3) Extracting each block to perform binarization processing, setting an initial boundary point of each block after the binarization processing, setting a first reference coordinate of the initial boundary point, and traversing pixels;
4) The initial boundary point is taken as a reference point, a next pixel is found along the scanning direction of the scanner, and a first reference coordinate of the initial boundary point is taken as a second reference coordinate for calibrating the next pixel; cycling until the initial boundary point is found again, and ending; obtaining the outline of each block and a corresponding reference coordinate set;
5) And merging the blocks according to the positions of the blocks to obtain a guide three-dimensional contour, and modifying the reference coordinate sets of other blocks by corresponding conversion of the reference coordinate set obtained by the first block to obtain the guide three-dimensional contour coordinate set.
3. The guide laser cladding repair method according to claim 2, wherein the marking point location is used as an initial boundary point of one of the blocks, and the block is used as an initial block.
4. The guide laser cladding repair method of claim 1, wherein the cube block fully covers the repair three-dimensional model edge.
5. The guide laser cladding repair method according to claim 1, wherein each cube block sets a movement route of the corresponding laser cladding device according to an initial position and an end position when repairing, sets a corresponding action sequence based on the number of the cube block, associates the action sequences according to the number, and correspondingly associates a plurality of movement routes to form a movement track after associating.
6. The guide laser cladding repair method according to claim 1, wherein the method for calculating the corresponding volume of the repair three-dimensional model in each cube block is as follows:
a) A statistics unit for setting a coordinate data set;
b) Recording a repair coordinate data set of the repair three-dimensional model relative to the center point, and calculating a first number of statistical units of the repair coordinate data set based on the statistical units;
c) Recording a coordinate data set of each cube block relative to the center point; and calculating a second number of statistical units of the coordinate data set based on the statistical units;
d) And obtaining the corresponding volume of the calculated repair three-dimensional model in each cube block according to the ratio between the first number and the second number.
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