CN115121960A - Brake block laser marking method - Google Patents
Brake block laser marking method Download PDFInfo
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- CN115121960A CN115121960A CN202210834644.5A CN202210834644A CN115121960A CN 115121960 A CN115121960 A CN 115121960A CN 202210834644 A CN202210834644 A CN 202210834644A CN 115121960 A CN115121960 A CN 115121960A
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- brake block
- distance
- ranging
- marking
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K26/00—Working by laser beam, e.g. welding, cutting or boring
- B23K26/36—Removing material
- B23K26/362—Laser etching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/007—Marks, e.g. trade marks
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- Optics & Photonics (AREA)
- Engineering & Computer Science (AREA)
- Plasma & Fusion (AREA)
- Mechanical Engineering (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a laser marking method for a brake block, which comprises the following steps: obtaining a three-dimensional model of a brake block; responding to the brake block placed on the conveyor belt, controlling the conveyor belt to carry the brake block, and adjusting the position and the angle of the brake block in the transmission process; responding to the fact that the brake block reaches the marking position, controlling each ranging sensing unit in the ranging sensor array to carry out ranging on the brake block, and obtaining a plurality of first distances; step S4, judging whether each first distance is in accordance with the corresponding preset distance, if so, marking the surface of the brake block, and controlling the laser emission head to move in the vertical direction according to the three-dimensional model of the brake block so that the spot size of the laser emission head is always kept within the preset range on the surface of the brake block; if not, the conveyor belt is controlled to convey the brake block away. The invention can effectively solve the problems of low marking speed of the brake block and different marked depths.
Description
Technical Field
The invention relates to the field of laser marking, in particular to a laser marking method for a brake block.
Background
Laser marking technology is one of the largest application areas of laser processing. Laser marking is a marking method in which a workpiece is irradiated locally with high-energy-density laser to vaporize a surface layer material or to undergo a chemical reaction of color change, thereby leaving a permanent mark. The laser marking can print various characters, symbols, patterns and the like, and the size of the characters can be from millimeter to micron, which has special significance for the anti-counterfeiting of products.
The brake block is a vehicle accessory, and is frequently required to be replaced due to high abrasion. Therefore, the yield of the brake block is large, the corresponding brake block needs to be added with an anti-counterfeiting mark or manufacturer information, and the mode of using adhesive tape or spraying paint is difficult to keep for a long time. The laser marking method for adding and marking the brake block has the advantages of high precision, obvious marking, long retention time and the like. However, the surface of the brake block to be marked is often uneven, the marking position is often not on a plane, and the focus of a common laser marking machine is generally on a plane. Under the condition, the focus with the highest power cannot continuously mark the brake block, so that the problems of low marking speed and different marked marks are caused.
Disclosure of Invention
In view of some of the above defects in the prior art, the present invention provides a method for laser marking a brake block, which aims to ensure that a laser marking machine always marks the brake block with the highest focus power, and solve the problems of slow marking speed and different marked marks.
In order to achieve the purpose, the invention discloses a brake block laser marking method, which is applied to a first laser marking machine, wherein the first laser marking machine comprises: the laser marking device comprises a conveying belt, a laser emitting head is arranged above a marking position of the conveying belt, a distance measuring sensor array is arranged on the side wall of the conveying belt at the marking position, and the distance measuring sensor array comprises a plurality of distance measuring sensing units; the method comprises the following steps:
s1, obtaining a three-dimensional model of the brake block; the brake block is of a symmetrical structure and needs to be marked on two sides;
step S2, responding to the brake block placed on the conveyor belt, controlling the conveyor belt to carry the brake block, and adjusting the position and the angle of the brake block in the transmission process;
step S3, responding to the condition that the brake block reaches the marking position, controlling each distance measurement sensing unit in the distance measurement sensor array to measure the distance of the brake block to obtain a plurality of first distances; the first distance is the distance between the distance measuring sensing unit and the brake block;
step S4, judging whether each first distance is in accordance with the corresponding preset distance, marking the surface of the brake block if the first distances are in accordance with the corresponding preset distances, and controlling the laser emission head to move in the vertical direction according to the three-dimensional model of the brake block so that the size of a light spot of the laser emission head is always kept within a preset range on the surface of the brake block; if the brake blocks do not accord with the brake blocks, the conveyor belt is controlled to convey the brake blocks away; and the preset distance is obtained by training a preset distance solving model.
Optionally, the training step of the preset distance solution model includes:
step A, obtaining a first side view of a preset placing posture of the brake block, and obtaining training distances measured by all the ranging sensing units in the ranging sensor array by taking the ranging sensor array as an observation party; the training distance is the distance between each distance measuring sensor unit and the brake block placed in the preset posture;
step B, inputting the three-dimensional model, the first side view and the training distance of the brake block into the preset distance solving model;
step C, controlling the preset distance solving model to simulate taking the ranging sensor array as an observing party, adjusting the visual angle of the three-dimensional model relative to the observing party, obtaining a three-dimensional model view under each visual angle, and obtaining the ranging value of each ranging sensor unit in the ranging sensor array; determining the three-dimensional model view with all the ranging values matched with the training distances corresponding to the ranging values as an alternative view; the distance measurement value is the distance between each distance measurement sensing unit and the brake block under each visual angle;
step D, judging whether the alternative view is unique and the alternative view is the same as the first side view, and if so, determining the training distance as a preset distance; and if not, prompting to adjust the arrangement mode and/or the arrangement quantity of the ranging sensing units in the ranging sensor array, responding to the completion of the adjustment of the arrangement mode and/or the arrangement quantity of the ranging sensing units, and sequentially repeating the step A to the step D.
Optionally, before step S4, the method further includes:
in response to the brake block reaching the marking position, controlling a clamping arm to abut against the brake block from one side so that the clamping arm and the side wall of the conveyor belt clamp the brake block; wherein, the centre gripping arm setting with range finding sensor group battle array sets up relatively.
Optionally, the distance measuring sensor array is an infrared distance measuring sensor array, and each of the infrared distance measuring sensor array is that the transmitting head of the distance measuring sensing unit is located on the conveyor belt to mark the side wall of the position.
Optionally, the adjusting the position and the angle of the brake block in the transmission process in step S2 includes:
controlling a mechanical pushing hand to push the brake block so that the brake block is tightly attached to one side of the distance measuring sensor array; wherein the position and angle of the brake block is changed during the pushing.
Optionally, after step S4, the method further includes:
judging whether the brake block is subjected to double-sided marking or not, and if so, judging that the brake block is subjected to marking; if not, the brake block is turned over, and the steps S2-S4 are repeated.
Optionally, in step S4, if each of the first distances does not match the corresponding preset distance, after controlling the conveyor belt to convey the brake block away, the method further includes:
and (4) putting the brake blocks again, and repeating the steps S2-S4 in sequence.
Optionally, the distance measuring direction of the distance measuring sensor array is perpendicular to the side wall of the conveyor belt.
The invention has the beneficial effects that: 1. the method comprises the steps of obtaining a three-dimensional model of a brake block; responding to the brake block placed on the conveyor belt, controlling the conveyor belt to carry the brake block, and adjusting the position and the angle of the brake block in the transmission process; responding to the fact that the brake block reaches the marking position, controlling each ranging sensing unit in the ranging sensor array to carry out ranging on the brake block, and obtaining a plurality of first distances; judging whether each first distance is in accordance with the corresponding preset distance, if so, marking the surface of the brake block, and controlling the laser emission head to move in the vertical direction according to the three-dimensional model of the brake block so as to keep the spot size of the laser emission head within the preset range on the surface of the brake block all the time; if not, the conveyor belt is controlled to convey the brake block away. Firstly, the brake block is determined to be placed in a preset posture at a marking position through a distance measuring sensor array, then the brake block is marked according to a three-dimensional model of the brake block, so that the vertical distance of a laser emitting head can be adjusted according to the concave-convex position of the surface of the brake block, the focus is always kept on the surface of the brake block, the brake block is subjected to laser marking with the maximum power and the consistency, the laser marking depth is ensured, and the laser marking efficiency is improved. Secondly, the brake block is placed in the marking position in a preset posture and the three-dimensional model can be used for accurately marking without depending on an image recognition technology, so that the technical threshold is reduced. 2. According to the invention, the marking and placing postures of the brake block are determined through the ranging sensor array, and the placing postures are ensured to meet the requirements, so that the situation that the marking is askew can be effectively avoided. 3. According to the invention, through the arrangement of the mechanical push hand and the clamping wall, the brake block can reach the marking position with higher probability to meet the requirement of the placing posture. In conclusion, the invention can effectively ensure that the laser marking machine marks the brake block with the highest focus power all the time, and solves the problems of low marking speed and different marked marks.
Drawings
FIG. 1 is a schematic flow chart of a method for laser marking a brake block according to an embodiment of the present invention;
FIG. 2 is a schematic flow chart illustrating training of a predetermined distance solution model according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a brake block and ranging sensor array according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a brake block and a ranging sensor array according to another embodiment of the invention.
Detailed Description
The invention discloses a brake block laser marking method, which can be realized by appropriately improving technical details by taking the contents of the brake block as reference by a person skilled in the art. It is expressly intended that all such similar substitutes and modifications which would be obvious to one skilled in the art are deemed to be included in the invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those of ordinary skill in the art that variations and modifications in the methods and applications described herein, as well as other suitable variations and combinations, may be made to implement and use the techniques of this invention without departing from the spirit and scope of the invention.
The applicant researches and discovers that: the surface of the brake block needing to be marked is often uneven, the marking position is often not on a plane, however, the focus of a common laser marking machine is generally on a plane. Under the condition, the focus with the highest power cannot continuously mark the brake block, so that the problems of low marking speed and different marked marks are caused. Particularly, due to the fact that the surface of the brake block is uneven, the mark with the preset depth on the plane where the focus is located needs to be marked obviously less than the mark with the preset depth on the plane where the focus is not located, and the mark marking speed is low; and if the marks are marked on different planes for the same time, the problem of different marked depths can be caused due to the difference of laser power.
Therefore, the embodiment of the invention provides a brake block laser marking method, which is applied to a first laser marking machine, wherein the first laser marking machine comprises the following steps: the laser marking device comprises a conveying belt, a laser emitting head is arranged above a marking position of the conveying belt, a distance measuring sensor array is arranged on the side wall of the conveying belt at the marking position, and the distance measuring sensor array comprises a plurality of distance measuring sensing units; as shown in fig. 1, the method specifically includes:
and step S1, obtaining a three-dimensional model of the brake block.
Wherein, the brake block is symmetrical structure and needs two-sided mark.
It should be noted that the brake block is also called a brake pad, and is a key part in brake components of electric vehicles and motorcycles.
Optionally, the three-dimensional model of the brake block may be obtained by extraction and scanning, or may be obtained according to a design drawing thereof.
And step S2, responding to the brake block placed on the conveyor belt, controlling the conveyor belt to carry the brake block, and adjusting the position and the angle of the brake block in the transmission process.
Optionally, in step S2, adjusting the position and the angle of the brake block during the transmission process includes:
controlling a mechanical pushing handle to push the brake block so that the brake block is tightly attached to one side provided with the ranging sensor array; wherein the position and angle of the brake block can be changed during the pushing process.
It should be noted that: the speed of the conveyor belt is stable in the conveying process, abrupt acceleration and deceleration cannot occur, and the conveying speed of the conveyor belt cannot be influenced when the mechanical pushing hand pushes the brake block.
And step S3, responding to the fact that the brake block reaches the marking position, controlling each ranging sensing unit in the ranging sensor array to range the brake block, and obtaining a plurality of first distances.
The first distance is the distance between the distance measuring sensing unit and the brake block.
The schematic diagram of the ranging sensor array and the brake block can be as shown in fig. 3 and 4, 301 is the side wall of the conveyor belt, 302 is the ranging sensor array, 303 is the ranging sensing unit, and 304 is the brake block. The dotted line represents a first distance between the ranging sensing unit and the brake block. In fig. 3 and 4, the range sensing unit has a range direction perpendicular to the sidewall 301.
The preset pose corresponding to the embodiment of fig. 3 is a conventional rest pose. The placing posture has the advantages of stability and difficult sliding.
The embodiment of fig. 4 corresponds to a predetermined attitude with minimal contact surface against the conveyor belt. Firstly, the area of the distance measuring sensor array in the vertical direction can be expanded, so that the distance measuring sensor array can detect the brake block more easily, and the condition that the distance measuring sensing unit is empty in measurement is reduced. Secondly, the contact area between the conveyor belt and the conveyor belt can be reduced. Because the surface of the brake block is rough, the posture of the brake block needs to be adjusted during the transportation of the conveyor belt, and if the contact area is too large, the rough surface can scratch the conveyor belt or damage the brake block easily. The contact area between the brake shoe and the conveyor belt is reduced, so that the situation can be avoided, and the smaller the contact area is, the harder the friction force is, and the easier the brake shoe can be subjected to posture adjustment.
It should be noted that the ranging sensing units in the ranging sensor array may be arranged irregularly or regularly, and the ranging sensing units may be arranged and changed or changed in number as required in the actual application process.
Step S4, judging whether each first distance is in accordance with the corresponding preset distance, if so, marking the surface of the brake block, and controlling the laser emission head to move in the vertical direction according to the three-dimensional model of the brake block so that the spot size of the laser emission head is always kept within the preset range on the surface of the brake block; if not, the conveyor belt is controlled to convey the brake block away.
And the preset distance is obtained by training a preset distance solving model.
It is worth mentioning that the size of the light spot is always kept within the predetermined range on the surface of the brake block, which means that the focus is always kept on the surface of the brake block in the embodiment of the present invention. The preset range is adopted to ensure that the allowable error range does not influence normal use in the practical application process.
It should be noted that, when the brake placement blocks are placed in different postures in the embodiment of the present invention, it is unlikely that all distances from each position on the brake block to the ranging sensor array are consistent (in the embodiment of the present invention, the brake block has a symmetric structure and is marked on both sides, so the case of placing the brake block in the front and back directions is eliminated, and only the cases of placing one side are discussed). For example, when the array is placed horizontally or vertically, the distance from some positions to the array of the distance measuring sensor is different. According to the embodiment of the invention, the placing posture of the brake at the marking position can be determined to be consistent with the preset placing posture, and the laser emitting head can be effectively adjusted to move in the vertical direction by combining the three-dimensional model of the brake block, so that the size of the light spot of the laser emitting head is always kept within the preset range on the surface of the brake block.
The embodiment of the invention can effectively keep the focus of the laser emitting head on the surface of the brake block, and marks with the highest power all the time, thereby ensuring the marking efficiency, avoiding the problem of different marking depths and improving the marking quality.
Optionally, in a specific embodiment, as shown in fig. 2, the training step of the preset distance solution model includes:
and step A, obtaining a first side view of the preset placing posture of the brake block, and obtaining the training distance measured by each ranging sensing unit in the ranging sensor array by taking the ranging sensor array as an observation party.
The training distance is the distance between the brake block which is measured by each distance measuring sensor unit and is placed in a preset posture.
It should be noted that the preset posture is a placing posture of the brake block capable of marking in the embodiment of the present invention. The first side view is the view of the brake block from the side of the distance measuring sensor.
And step B, inputting the three-dimensional model, the first side view and the training distance of the brake block into the preset distance solving model.
Step C, controlling a preset distance solving model to simulate by taking the ranging sensor array as an observing party, adjusting the visual angle of the three-dimensional model relative to the observing party to obtain a three-dimensional model view under each visual angle, and obtaining the ranging value of each ranging sensing unit in the ranging sensor array; and determining the three-dimensional model view with all the ranging values matched with the corresponding training distances as the alternative view.
The distance measurement value is the distance between each distance measurement sensing unit and the brake block under each visual angle. At least one of the alternative views.
Step D, judging whether the alternative view is unique and the alternative view is the same as the first side view, and if so, determining the training distance as a preset distance; and if not, prompting to adjust the arrangement mode and/or the arrangement quantity of the ranging sensing units in the ranging sensing unit array, responding to the completion of the adjustment of the arrangement mode and/or the arrangement quantity of the ranging sensing units, and sequentially repeating the step A to the step D.
It should be noted that, in this embodiment, although different positions of the brake pad must have different distances for the same distance measurement sensor array in different placement postures, the number of distance measurement sensing units in the distance measurement sensor array is limited, and it is impossible to perform overall distance measurement, and the situations that the distances of the distance measurement positions are the same, and the distances of the positions that are not measured are different occur. Therefore, in the embodiment of the invention, the preset distance solving model is used for training, and once the distance-consistent values are matched with the corresponding training distances and a plurality of views exist, the distance-consistent positions are all the same, and the distance-unmeasured positions are different. At this time, the embodiment of the present invention changes the ranging position by adjusting the arrangement manner and/or the arrangement number of the ranging sensing units in the ranging sensor array until the alternative view is detected to be unique and identical to the first side view. This ensures that it can be determined with certainty by ranging whether the brake block is placed in the preset attitude.
As an example, the brake block is placed transversely and vertically, and the distances of A, B, C detected by the ranging sensor array are the same. In this case, the number or arrangement of the ranging sensor units may be changed to detect A, B, D three positions so that at least one of the measured distances is different.
In the above embodiments, the positions detected by the ranging sensor array are not fixed positions on the brake block relative to the ranging sensing unit. A, B, C is the only distance that the distance measuring sensor unit remains stationary to detect, and the brake block lateral placement and vertical placement A, B, C differ in the location of the brake block structure.
Optionally, before step S4, the method further includes:
responding to the brake block reaching the marking position, controlling the clamping arm to abut against the brake block from one side so that the clamping arm and the side wall of the conveyor belt clamp the brake block; wherein, the centre gripping arm sets up and sets up with range finding sensor array relative.
According to the embodiment of the invention, the situation that the brake block possibly slides in the marking process is avoided in a clamping mode, and the marking accuracy is ensured.
Optionally, the distance measuring sensor array is an infrared distance measuring sensor array, and the transmitting head of each distance measuring sensing unit in the infrared distance measuring sensor array is located on the side wall of the marking position of the conveyor belt.
It should be noted that the infrared distance measuring sensor has the advantages of high precision and good stability, and can effectively avoid the problem of overlarge distance measuring error.
Optionally, after step S4, the method further includes:
judging whether the double-sided marking of the brake block is finished or not, if so, judging that the marking of the brake block is finished; if not, the brake block is turned over, and the steps S2-S4 are repeated.
It should be noted that the brake block in the embodiment of the present invention needs to be subjected to double-sided marking, so that it is necessary to determine whether double-sided marking is completed, and a brake block with unfinished marking is prevented from being mixed into a finished product.
In a specific embodiment, the flipping may be operated by controlling a robot.
Optionally, in step S4, if each first distance does not match the corresponding preset distance, the method further includes:
and (5) putting the brake block again, and repeating the steps S2-S4 in sequence.
It should be noted that some brake blocks are not placed according to a preset posture, so that the mark cannot be marked to the position needing to be marked, and therefore the mark needs to be placed again.
Optionally, the distance measuring direction of the distance measuring sensor array is perpendicular to the side wall of the conveyor belt.
The distance measuring direction is perpendicular to the side wall of the conveying belt, so that the preset distance can be solved more easily.
In particular applications, the range finding direction may not be perpendicular to the side walls of the conveyor belt, but may be maintained at a constant orientation, particularly when the number and/or arrangement of range finding sensing units is adjusted.
The embodiment of the invention obtains a three-dimensional model of the brake block; responding to the brake block placed on the conveyor belt, controlling the conveyor belt to carry the brake block, and adjusting the position and the angle of the brake block in the transmission process; responding to the fact that the brake block reaches the marking position, controlling each ranging sensing unit in the ranging sensor array to carry out ranging on the brake block, and obtaining a plurality of first distances; judging whether each first distance is in accordance with the corresponding preset distance, if so, marking the surface of the brake block, and controlling the laser emission head to move in the vertical direction according to the three-dimensional model of the brake block so as to keep the spot size of the laser emission head within the preset range on the surface of the brake block all the time; if not, the conveyor belt is controlled to convey the brake block away. Firstly, the embodiment of the invention determines that the brake block is placed in a preset posture at the marking position through the distance measuring sensor array, and then marks the brake block according to the three-dimensional model of the brake block, so that the laser emitting head can be ensured to adjust the vertical distance according to the concave-convex position of the surface of the brake block, the focus is always kept on the surface of the brake block, the brake block is subjected to laser marking with the maximum power and the consistent depth, the consistency of the laser marking depth is ensured, and the laser marking efficiency is improved. Secondly, the brake block is placed in the marking position in the preset posture and the three-dimensional model can be used for accurately marking without depending on an image recognition technology, so that the technical threshold is reduced. According to the embodiment of the invention, the marking and placing postures of the brake block are determined through the ranging sensor array, and the placing postures meet the requirements, so that the marking and skewing conditions can be effectively avoided. According to the embodiment of the invention, the mechanical push hand and the clamping wall are arranged, so that the brake block can reach the marking position with higher probability to meet the requirement of the placing posture. In conclusion, the embodiment of the invention can effectively ensure that the laser marking machine marks the brake block with the highest focus power all the time, and solves the problems of low marking speed and different marked marks.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
All the embodiments in the present specification are described in a related manner, and the same and similar parts among the embodiments may be referred to each other, and each embodiment focuses on differences from other embodiments. In particular, as for the system embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and reference may be made to the partial description of the method embodiment for relevant points.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention shall fall within the protection scope of the present invention.
Claims (8)
1. The brake block laser marking method is characterized by being applied to a first laser marking machine, wherein the first laser marking machine comprises the following steps: the laser marking device comprises a conveying belt, a laser emitting head is arranged above a marking position of the conveying belt, a distance measuring sensor array is arranged on the side wall of the conveying belt at the marking position, and the distance measuring sensor array comprises a plurality of distance measuring sensing units; the method comprises the following steps:
s1, obtaining a three-dimensional model of the brake block; the brake block is of a symmetrical structure and needs to be marked on two sides;
step S2, responding to the brake block placed on the conveyor belt, controlling the conveyor belt to carry the brake block, and adjusting the position and the angle of the brake block in the transmission process;
step S3, responding to the fact that the brake block reaches the marking position, controlling each ranging sensing unit in the ranging sensor array to carry out ranging on the brake block to obtain a plurality of first distances; the first distance is the distance between the distance measuring sensing unit and the brake block;
step S4, judging whether each first distance is in accordance with the corresponding preset distance, marking the surface of the brake block if the first distances are in accordance with the corresponding preset distances, and controlling the laser emission head to move in the vertical direction according to the three-dimensional model of the brake block so that the size of a light spot of the laser emission head is always kept within a preset range on the surface of the brake block; if the brake blocks do not accord with the brake blocks, the conveyor belt is controlled to convey the brake blocks away; and the preset distance is obtained by training a preset distance solving model.
2. The brake block laser marking method as claimed in claim 1, wherein the training step of the preset distance solution model includes:
step A, obtaining a first side view of a preset placing posture of the brake block, and obtaining training distances measured by all the ranging sensing units in the ranging sensor array by taking the ranging sensor array as an observation party; the training distance is the distance between each distance measuring sensor unit and the brake block placed in the preset posture;
step B, inputting the three-dimensional model, the first side view and the training distance of the brake block into the preset distance solving model;
step C, controlling the preset distance solving model to simulate taking the ranging sensor array as an observing party, adjusting the visual angle of the three-dimensional model relative to the observing party, obtaining a three-dimensional model view under each visual angle, and obtaining the ranging value of each ranging sensor unit in the ranging sensor array; determining the three-dimensional model view with all the ranging values matched with the training distances corresponding to the ranging values as an alternative view; the distance measurement value is the distance between each distance measurement sensing unit and the brake block under each visual angle;
step D, judging whether the alternative view is unique and the alternative view is the same as the first side view, and if so, determining the training distance as a preset distance; and if not, prompting to adjust the arrangement mode and/or the arrangement quantity of the ranging sensing units in the ranging sensor array, responding to the completion of the adjustment of the arrangement mode and/or the arrangement quantity of the ranging sensing units, and sequentially repeating the step A to the step D.
3. The brake block laser marking method as claimed in claim 1, wherein prior to step S4, the method further comprises:
in response to the brake block reaching the marking position, controlling a clamping arm to abut against the brake block from one side so that the clamping arm and the side wall of the conveyor belt clamp the brake block; wherein, the centre gripping arm setting with range finding sensor group battle array sets up relatively.
4. The laser marking method for the brake block according to claim 1, wherein the distance measuring sensor array is an infrared distance measuring sensor array, and the emitting head of each distance measuring sensing unit in the infrared distance measuring sensor array is located on the side wall of the marking position of the conveyor belt.
5. The method for laser marking a brake block according to claim 1, wherein the step S2 of adjusting the position and the angle of the brake block during the driving process comprises:
controlling a mechanical pushing hand to push the brake block so that the brake block is tightly attached to one side of the distance measuring sensor array; wherein the position and angle of the brake block is changed during the pushing process.
6. The brake block laser marking method as claimed in claim 1, wherein after step S4, the method further comprises:
judging whether the brake block is subjected to double-sided marking or not, and if so, judging that the brake block is subjected to marking; if not, the brake block is turned over, and the steps S2-S4 are repeated.
7. The method for laser marking a brake pad according to claim 1, wherein if each of the first distances does not correspond to the preset distance corresponding thereto in step S4, the method further comprises, after controlling the conveyor belt to convey the brake pad away:
and (5) resetting the brake block, and repeating the steps S2-S4 in sequence.
8. The laser marking method for the brake block according to claim 1, wherein the ranging direction of the ranging sensor array is perpendicular to the side wall of the conveyor belt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210834644.5A CN115121960A (en) | 2022-07-14 | 2022-07-14 | Brake block laser marking method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210834644.5A CN115121960A (en) | 2022-07-14 | 2022-07-14 | Brake block laser marking method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115121960A true CN115121960A (en) | 2022-09-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210834644.5A Pending CN115121960A (en) | 2022-07-14 | 2022-07-14 | Brake block laser marking method |
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| Country | Link |
|---|---|
| CN (1) | CN115121960A (en) |
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2022
- 2022-07-14 CN CN202210834644.5A patent/CN115121960A/en active Pending
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