CN112588475A - Design method of automatic spraying and profiling process of new vehicle type - Google Patents
Design method of automatic spraying and profiling process of new vehicle type Download PDFInfo
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- CN112588475A CN112588475A CN202011410727.9A CN202011410727A CN112588475A CN 112588475 A CN112588475 A CN 112588475A CN 202011410727 A CN202011410727 A CN 202011410727A CN 112588475 A CN112588475 A CN 112588475A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/12—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to conditions of ambient medium or target, e.g. humidity, temperature position or movement of the target relative to the spray apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B12/00—Arrangements for controlling delivery; Arrangements for controlling the spray area
- B05B12/08—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means
- B05B12/084—Arrangements for controlling delivery; Arrangements for controlling the spray area responsive to condition of liquid or other fluent material to be discharged, of ambient medium or of target ; responsive to condition of spray devices or of supply means, e.g. pipes, pumps or their drive means responsive to condition of liquid or other fluent material already sprayed on the target, e.g. coating thickness, weight or pattern
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B5/00—Electrostatic spraying apparatus; Spraying apparatus with means for charging the spray electrically; Apparatus for spraying liquids or other fluent materials by other electric means
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
A design method of a new vehicle type automatic spraying profiling process comprises profiling track design and process parameter design, wherein the profiling track design comprises the following steps: standardizing the copying original data model picture; determining the coordinates of the data model picture in the off-line simulation software; designing side-spraying and top-spraying profiling tracks in off-line simulation software; single-step simulation test of a profiling track program; performing a full-flow simulation test on a profiling track program; profiling track program real vehicle whole flow debugging; designing process parameters: standardizing the process original data model pictures; determining the coordinates of the data model picture in the off-line simulation software; dividing the spraying areas of the top and the side of the vehicle body; setting electrostatic high voltage values, spraying flow values and molding air pressure values of the top and the side of the vehicle body; simulation test and debugging of a process program and data; and (5) profiling and spraying real vehicle full-process debugging. The design has the advantages of small workload, low difficulty, high safety and reliability, difficult error, high precision and short construction period.
Description
Technical Field
The invention relates to the field of high-voltage electrostatic automatic spraying in the automobile coating industry, in particular to a design method of a novel automobile type automatic spraying profiling process.
Background
The coating process of the surface of the automobile body is used for meeting the requirements of people on various aspects of corrosion resistance, rust resistance, weather resistance, scratch resistance, stain resistance, decoration and the like of the automobile, and is particularly important today when the personalized and diversified customization requirements of people on automobile products are increased greatly. A design method for automatic spraying of vehicle body paint for the expansion of new vehicle type is used in the high-voltage electrostatic automatic spraying field of automobile coating industry. The existing method for designing the new vehicle type profiling process of the automatic spraying machine comprises new vehicle type profiling, process design and the like, the key dimension of a real vehicle body is measured manually to position the vehicle body, repeated high-density trial and error revision is needed, the workload is large, the efficiency is low, errors are easy to occur, the precision is low, potential safety hazards exist, the whole engineering period is long, and the influence on production is large.
Disclosure of Invention
The invention aims to overcome the defects and problems of large workload, high difficulty, low safety and reliability, easy error, low precision and long construction period in the prior art, and provides the design method of the automatic spraying and profiling process of the novel vehicle type, which has the advantages of small workload, low difficulty, high safety and reliability, difficult error, high precision and short construction period.
In order to achieve the above purpose, the technical solution of the invention is as follows: a design method for an automatic spraying and profiling process of a new vehicle type comprises the following steps:
s1 copying track design
S11, acquiring a new vehicle type copying original data model picture;
s12, standardizing the copying original data model picture;
s13, determining the coordinates of the standardized data model picture in the off-line simulation software;
s14, designing a side-spraying profiling track in off-line simulation software;
s15, designing a top-spraying profiling track in off-line simulation software;
s16, under the condition that an actual vehicle body is not placed, each trace program in the profiling trace programs is tested one by one and corrected by utilizing the single-step simulation test function of the off-line simulation software;
s17, under the condition that the actual vehicle body is not placed, continuously executing test and correction on all the trace programs in all the profiling trace programs in the off-line simulation software;
s18, placing an actual vehicle body on the spray booth conveying chain, and continuously executing and testing and correcting all the trace programs in all the profiling trace programs in the off-line simulation software under the condition that the spraying function is not started;
s19, optimizing the profile modeling track;
s2, designing process parameters
S21, obtaining a process original data model picture of the new vehicle type;
s22, standardizing the process original data model picture;
s23, determining the coordinates of the standardized data model picture in the off-line simulation software;
s24, dividing the spraying areas of the top and the side of the vehicle body;
s25, setting the electrostatic high voltage values of the top and the side of the vehicle body;
s26, setting the spraying flow values of the top and the side of the vehicle body;
s27, setting the molding air pressure values of the top and the side of the vehicle body;
s28, starting a spraying function, and testing and correcting process parameters under the condition that an actual vehicle body is not placed;
s29, placing the actual car body on the spray room conveying chain, and spraying the actual car body by using the process parameters under the condition that the spraying function is started, and after the spraying is finished and the drying is finished, checking the paint quality of the actual car body and correcting the process parameters;
and S210, optimizing the process parameters.
In step S12, the Phtoshop software is used to standardize the copying original data model picture, and the standardization requirements are as follows: the picture canvas pixels are required to be 260 × 260 around the front and back, 260 × 720 around the side, and scaled according to 1 pixel-1 cm.
In step S13, a vehicle body with a pry is placed on the finish paint transmission chain, and the coordinate value of the data model picture in the off-line simulation software is determined according to the actual position of the vehicle body with the pry on the finish paint transmission chain and the coordinate value in the coordinate system of the servo control system.
In the step S14, firstly, carrying out region division on the side wall surface of the vehicle body, and then determining a profiling track in each region;
when the copying track is determined, an initial position and a target position of a target copying track curve are specified, a control set point is inserted between the initial position and the target position along a time axis, and then a copying track is generated according to the rule that three points form an arc.
In step S15, in the side view in the viewing environment, the profile control points and the coordinates are determined from the external contour of the vehicle body, and then the profile locus is generated from the profile control points.
In steps S14 and S15, the distance between the rotor and the vehicle body is 230mm to 280 mm.
In step S24, the number of divided coating regions is 18 or less.
In step S25, the electrostatic high voltage value is 60KV to 80 KV.
In step S26, the spraying flow rate is 50 ml/min-120 ml/min.
In step S27, the molding air pressure value is 50 Bar-120 Bar.
Compared with the prior art, the invention has the beneficial effects that:
according to the design method of the automatic spraying and profiling process of the new vehicle type, disclosed by the invention, the visualization, standardization and flow of key technologies such as vehicle body coating profiling technology, process parameter design and comprehensive debugging are realized through the processes and development processes of vehicle body profiling, process design and comprehensive debugging, the method has the characteristics of small workload, low difficulty, safety, reliability, difficulty in error, high precision, short construction period and the like, provides reliable foundation and technical support for the development and mass production of automatic spraying of the new vehicle type, and has good practical value. Therefore, the invention has the advantages of small workload, low difficulty, high safety and reliability, difficult error, high precision and short construction period.
Drawings
FIG. 1 is a flow chart of the profiling track design of the present invention.
FIG. 2 is a flow chart of the process parameter design in the present invention.
Detailed Description
The present invention will be described in further detail with reference to the following description and embodiments in conjunction with the accompanying drawings.
Referring to fig. 1 and 2, a design method of an automatic spraying and profiling process of a new vehicle type comprises the following steps:
s1 copying track design
S11, acquiring a new vehicle type copying original data model picture;
s12, standardizing the copying original data model picture;
s13, determining the coordinates of the standardized data model picture in the off-line simulation software;
s14, designing a side-spraying profiling track in off-line simulation software;
s15, designing a top-spraying profiling track in off-line simulation software;
s16, under the condition that an actual vehicle body is not placed, each trace program in the profiling trace programs is tested one by one and corrected by utilizing the single-step simulation test function of the off-line simulation software;
s17, under the condition that the actual vehicle body is not placed, continuously executing test and correction on all the trace programs in all the profiling trace programs in the off-line simulation software;
s18, placing an actual vehicle body on the spray booth conveying chain, and continuously executing and testing and correcting all the trace programs in all the profiling trace programs in the off-line simulation software under the condition that the spraying function is not started;
s19, optimizing the profile modeling track;
s2, designing process parameters
S21, obtaining a process original data model picture of the new vehicle type;
s22, standardizing the process original data model picture;
s23, determining the coordinates of the standardized data model picture in the off-line simulation software;
s24, dividing the spraying areas of the top and the side of the vehicle body;
s25, setting the electrostatic high voltage values of the top and the side of the vehicle body;
s26, setting the spraying flow values of the top and the side of the vehicle body;
s27, setting the molding air pressure values of the top and the side of the vehicle body;
s28, starting a spraying function, and testing and correcting process parameters under the condition that an actual vehicle body is not placed;
s29, placing the actual car body on the spray room conveying chain, and spraying the actual car body by using the process parameters under the condition that the spraying function is started, and after the spraying is finished and the drying is finished, checking the paint quality of the actual car body and correcting the process parameters;
and S210, optimizing the process parameters.
In step S12, the Phtoshop software is used to standardize the copying original data model picture, and the standardization requirements are as follows: the picture canvas pixels are required to be 260 × 260 around the front and back, 260 × 720 around the side, and scaled according to 1 pixel-1 cm.
In step S13, a vehicle body with a pry is placed on the finish paint transmission chain, and the coordinate value of the data model picture in the off-line simulation software is determined according to the actual position of the vehicle body with the pry on the finish paint transmission chain and the coordinate value in the coordinate system of the servo control system.
In the step S14, firstly, carrying out region division on the side wall surface of the vehicle body, and then determining a profiling track in each region;
when the copying track is determined, an initial position and a target position of a target copying track curve are specified, a control set point is inserted between the initial position and the target position along a time axis, and then a copying track is generated according to the rule that three points form an arc.
In step S15, in the side view in the viewing environment, the profile control points and the coordinates are determined from the external contour of the vehicle body, and then the profile locus is generated from the profile control points.
In steps S14 and S15, the distance between the rotor and the vehicle body is 230mm to 280 mm.
In step S24, the number of divided coating regions is 18 or less.
In step S25, the electrostatic high voltage value is 60KV to 80 KV.
In step S26, the spraying flow rate is 50 ml/min-120 ml/min.
In step S27, the molding air pressure value is 50 Bar-120 Bar.
The principle of the invention is illustrated as follows:
and deriving a car body model picture from a car body 3D digital model of the process design. The new vehicle type is defined in the off-line simulation software, and the new vehicle type comprises a vehicle type code, a copying program code, a vehicle body length, a vehicle body width, a vehicle body height, a vehicle body starting position, an offset and the like. In the off-line simulation software, starting limit boundary coordinates of a front view, a top view and a rear view of a vehicle body model picture in a simulation programming environment view are set according to the relative position of a vehicle body in the spraying machine. The coordinate value of the profile modeling data model picture in the off-line simulation software actually needs to take a coordinate system of a servo control system as a reference standard, and the coordinate parameter directly influences the precision, reliability and safety of servo profile modeling motion.
The difference of each part of the vehicle body finally causes that the difference of the film thickness of each area after spraying is possibly large, and the film thickness of each area needs to be uniform, and the copying track and the copying movement speed are respectively adjustable, so that the spraying surface of the vehicle body needs to be diced, and different spraying areas adopt different copying tracks and copying movement speeds and can be adjusted at any time. Firstly, dividing the side wall surface of the vehicle body into regions, then determining a profiling track for each region, determining a profiling track according to the track planning principle, firstly, specifying an initial position and a target position of a target profiling track curve, then inserting a 'control set point' between the initial position and the target position along a time axis, and generating a profiling track according to the rule that three points form an arc. In order to make the profile trajectory more accurate, a series of "control set points B" need to be inserted between the starting points A, C to more accurately approximate it to the target path. Therefore, in a specific period, the built-in profiling algorithm can automatically calculate and plan a profiling spraying track, and a fitting curve, namely a profiling track of a circular arc, can be automatically generated by continuously performing interpolation calculation. If a profiling track which is closer to, closer to and more accurate to the curved surface of the vehicle body is planned, more characteristic points are needed to be added to constrain the motion path, and a more advanced and more efficient interpolation algorithm needs to be optimized, so that a smooth motion track with continuous position and speed can be planned and generated, the motion track of the rotary cup is continuous and smooth, and the accurate profiling requirement is met. According to the size and the width of the subareas, the copying tracks with different lengths are determined, and different speeds are determined by the tracks with different lengths in a certain time.
When the top-spraying profiling design is carried out, the track planning of the front wall and the rear wall, the matching between the X axis and the Z axis and the synchronous pulse of the transmission chain are particularly required, otherwise, the collision between the rotating cup and the vehicle body is possibly caused, the equipment is damaged, or the frequent alarm is given during production, so that the production cannot be carried out.
The rotary cup is vertical to any surface of the sprayed workpiece as much as possible, and the profiling of the surface profile of the sprayed workpiece is completed under the condition of uniform motion relative to the sprayed workpiece, so that high-pressure alarm is easily caused when the rotary cup is too close to the surface profile of the sprayed workpiece, the spraying quality is influenced, paint is wasted when the rotary cup is too far away, and the spraying quality is influenced.
Each trace program in the profiling trace programs is tested one by one, and whether the trace programs are reasonable and smooth or not is detected, and whether alarm points exist or not is detected; if the abnormal track exists, the program of the profiling track is modified according to the method and the steps of the track planning design, the coordinates of the control points of each abnormal track program, the speed of the track and the like are adjusted, and the steps are repeated until each track is free from the abnormal track.
Continuously executing and testing all the trace programs in all the trace programs, and detecting whether the transition and the connection of the copying operation between the front trace and the back trace are smooth or not, whether an alarm exists or not and the like; if the abnormal situation exists, the abnormal control points at the joint of the program of the profiling track are modified according to the method and the steps of the track planning design, the coordinates of the control points, the speed of the track and the like are adjusted, and the steps are repeated until all the tracks are abnormal.
Debugging the whole process of the real vehicle: detecting and observing the distance between the spray head rotating cup and the vehicle body in a real object, whether the distance is too close or too far, whether interference or collision exists between the spray head rotating cup and the vehicle body, whether the copying operation transition and connection among all track programs are smooth, whether alarm exists or not and other problems; if the abnormal track exists, the abnormal control points of the program of the profiling track are modified according to the method and the steps of the track planning design, the coordinates of the control points, the speed of the track and the like are adjusted, and the steps are repeated until all the tracks are abnormal. In order to achieve better spraying effect and ensure safety (preventing collision and high-pressure alarm safety), the control points, speed and the like of the profile modeling track are further optimized and modified according to the actual vehicle.
Determining the coordinates of the copying data model picture in offline simulation software, and engineering; because the picture coordinate positioning of the profiling data model is actually a reference basis of the profiling motion of the rotary cup, the picture coordinate positioning needs to be determined according to the actual position size of the vehicle body with the prying body, and the coordinate parameter influences the accuracy of the positioning of the rotary cup spraying area and the accuracy of the coverage of the fog width.
Generally, due to the difference of each part of the vehicle body, the difference of the film thickness of each area after spraying is possibly large, the film thickness of each area needs to be uniform, and the high pressure, the flow and the forming air in each area are respectively adjustable, so that the spraying surface of the vehicle body needs to be divided into blocks, different spraying areas adopt different spraying process parameters and can be adjusted at any time, and the spraying quality is improved; according to field debugging and test experience, different vehicle body shapes and different curved surfaces are subjected to region division, and the number of the regions of one vehicle body is not more than 18.
On one hand, the electrostatic atomization is realized, and on the other hand, an accelerating electric field is formed, which is a key parameter for improving the utilization rate of the coating; the high-voltage alarm fault is caused by the over-high voltage, and the machine is frequently stopped; or cause safety accidents such as fire striking, fire hazard, etc.
The spraying flow is the direct reflection of the paint film thickness and uniformity, and the flow is adjusted by dividing the area, so that the method is the most effective method for solving the paint film uniformity and effectively preventing the quality problems of sagging, thin spraying and the like.
The forming air pressure is a parameter for controlling the size of the fan surface of the paint mist of the rotary cup, and the forming air with different pressures is set for different spraying areas, so that the size of the fan width of the spraying can be effectively controlled, the spraying areas with different areas can be adapted, the thickness of the paint film can be controlled, the utilization rate of the paint is improved, and the quality problems of sagging, thin spraying and the like can be prevented to a certain degree.
During simulation test, the rotating cup, the paint valve, the main needle and the spraying parameters are tested, the rotating action and the rotating speed of the rotating cup are observed, whether the opening and the closing of the paint valve and the main needle are abnormal or an alarm is given, whether the spraying parameters are normal or not is judged, if the spraying parameters are abnormal, physical parts need to be checked and cleared, and the spraying process parameters such as the spraying flow, the electrostatic high-voltage value, the forming air pressure, the rotating speed of the rotating cup and the like are modified and adjusted according to the method and the steps designed by the previous parameters, and the steps are repeated until all tracks are abnormal.
When the quality of paint sprayed on the vehicle body is checked, if the problems of missing spraying, thin spraying, thick spraying, no film thickness cloud, sagging, shrinkage cavity, orange peel, no gloss and the like are found, the process parameters such as the paint spraying flow, the electrostatic high-voltage value, the forming air pressure, the rotating speed of the rotary cup and the like need to be repeatedly adjusted and optimized until the paint quality is not abnormal and qualified and reaches the quality standard.
In the process of debugging process parameters, the factors influencing the quality of the paint of the vehicle body are as follows: the parameters need to be considered and adjusted respectively or comprehensively according to the characteristics of the influence of the parameters on the spraying quality, and the optimal spraying effect is obtained through repeated real vehicle spraying and repeated debugging on site. The relevant process parameter settings are as follows.
Example (b):
referring to fig. 1 and 2, a design method of an automatic spraying and profiling process of a new vehicle type comprises the following steps:
s1 copying track design
S11, acquiring a new vehicle type copying original data model picture;
s12, standardizing the copying original data model picture;
carrying out standardization processing on the copying original data model picture by adopting Phtoshop software, wherein the standardization requirements are as follows: the picture canvas pixels are required to be 260 × 260 in front and back, 260 × 720 in side walls and scaled according to 1 pixel-1 cm;
s13, determining the coordinates of the standardized data model picture in the off-line simulation software;
placing a vehicle body with a prying body on a finish paint transmission chain, and determining the coordinate value of a data model picture in off-line simulation software according to the actual position of the vehicle body with the prying body on the finish paint transmission chain and relative to the coordinate value in a coordinate system of a servo control system;
s14, designing a side-spraying profiling track in off-line simulation software;
firstly, carrying out region division on the side wall surface of the vehicle body, and then determining a profiling track in each region;
when the copying track is determined, an initial position and a target position of a target copying track curve are specified, a control set point is inserted between the initial position and the target position along a time axis, and then a copying track is generated according to the rule that three points form an arc;
the distance between the rotating cup and the vehicle body is 230 mm-280 mm;
s15, designing a top-spraying profiling track in off-line simulation software;
in a side view under a view environment, determining each copying control point and coordinates according to an external contour of a vehicle body, and then generating a copying track according to each copying control point;
the distance between the rotating cup and the vehicle body is 230 mm-280 mm;
s16, under the condition that an actual vehicle body is not placed, each trace program in the profiling trace programs is tested one by one and corrected by utilizing the single-step simulation test function of the off-line simulation software;
s17, under the condition that the actual vehicle body is not placed, continuously executing test and correction on all the trace programs in all the profiling trace programs in the off-line simulation software;
s18, placing an actual vehicle body on the spray booth conveying chain, and continuously executing and testing and correcting all the trace programs in all the profiling trace programs in the off-line simulation software under the condition that the spraying function is not started;
s19, optimizing the profile modeling track;
s2, designing process parameters
S21, obtaining a process original data model picture of the new vehicle type;
s22, standardizing the process original data model picture;
s23, determining the coordinates of the standardized data model picture in the off-line simulation software;
s24, dividing the spraying areas of the top and the side of the vehicle body;
the number of the divided spraying areas is less than or equal to 18;
s25, setting the electrostatic high voltage values of the top and the side of the vehicle body;
the electrostatic high voltage value is 60 KV-80 KV;
s26, setting the spraying flow values of the top and the side of the vehicle body;
the spraying flow value is 50 ml/min-120 ml/min;
s27, setting the molding air pressure values of the top and the side of the vehicle body;
the molding air pressure value is 50 Bar-120 Bar;
s28, starting a spraying function, and testing and correcting process parameters under the condition that an actual vehicle body is not placed;
s29, placing the actual car body on the spray room conveying chain, and spraying the actual car body by using the process parameters under the condition that the spraying function is started, and after the spraying is finished and the drying is finished, checking the paint quality of the actual car body and correcting the process parameters;
and S210, optimizing the process parameters.
Claims (10)
1. A design method for a new vehicle type automatic spraying profiling process is characterized by comprising the following steps:
s1 copying track design
S11, acquiring a new vehicle type copying original data model picture;
s12, standardizing the copying original data model picture;
s13, determining the coordinates of the standardized data model picture in the off-line simulation software;
s14, designing a side-spraying profiling track in off-line simulation software;
s15, designing a top-spraying profiling track in off-line simulation software;
s16, under the condition that an actual vehicle body is not placed, each trace program in the profiling trace programs is tested one by one and corrected by utilizing the single-step simulation test function of the off-line simulation software;
s17, under the condition that the actual vehicle body is not placed, continuously executing test and correction on all the trace programs in all the profiling trace programs in the off-line simulation software;
s18, placing an actual vehicle body on the spray booth conveying chain, and continuously executing and testing and correcting all the trace programs in all the profiling trace programs in the off-line simulation software under the condition that the spraying function is not started;
s19, optimizing the profile modeling track;
s2, designing process parameters
S21, obtaining a process original data model picture of the new vehicle type;
s22, standardizing the process original data model picture;
s23, determining the coordinates of the standardized data model picture in the off-line simulation software;
s24, dividing the spraying areas of the top and the side of the vehicle body;
s25, setting the electrostatic high voltage values of the top and the side of the vehicle body;
s26, setting the spraying flow values of the top and the side of the vehicle body;
s27, setting the molding air pressure values of the top and the side of the vehicle body;
s28, starting a spraying function, and testing and correcting process parameters under the condition that an actual vehicle body is not placed;
s29, placing the actual car body on the spray room conveying chain, and spraying the actual car body by using the process parameters under the condition that the spraying function is started, and after the spraying is finished and the drying is finished, checking the paint quality of the actual car body and correcting the process parameters;
and S210, optimizing the process parameters.
2. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S12, the Phtoshop software is used to standardize the copying original data model picture, and the standardization requirements are as follows: the picture canvas pixels are required to be 260 x 260 around the front and back, 260 x 720 around the side, and scaled according to 1pixel =1 cm.
3. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S13, a vehicle body with a pry is placed on the finish paint transmission chain, and the coordinate value of the data model picture in the off-line simulation software is determined according to the actual position of the vehicle body with the pry on the finish paint transmission chain and the coordinate value in the coordinate system of the servo control system.
4. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that:
in the step S14, firstly, carrying out region division on the side wall surface of the vehicle body, and then determining a profiling track in each region;
when the copying track is determined, an initial position and a target position of a target copying track curve are specified, a control set point is inserted between the initial position and the target position along a time axis, and then a copying track is generated according to the rule that three points form an arc.
5. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S15, in the side view in the viewing environment, the profile control points and the coordinates are determined from the external contour of the vehicle body, and then the profile locus is generated from the profile control points.
6. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in steps S14 and S15, the distance between the rotor and the vehicle body is 230mm to 280 mm.
7. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S24, the number of divided coating regions is 18 or less.
8. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S25, the electrostatic high voltage value is 60KV to 80 KV.
9. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S26, the spraying flow rate is 50 ml/min-120 ml/min.
10. The design method of the automatic spraying and profiling process of the new vehicle type according to claim 1 is characterized in that: in step S27, the molding air pressure value is 50 Bar-120 Bar.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113893979A (en) * | 2021-11-02 | 2022-01-07 | 深圳市索威尔科技开发有限公司 | Automatic spraying method and device for vehicle |
| CN114733683A (en) * | 2022-04-25 | 2022-07-12 | 广汽本田汽车有限公司 | Automatic spraying method and system for automobile body |
| CN115921253A (en) * | 2022-12-26 | 2023-04-07 | 中国第一汽车股份有限公司 | Method for realizing one-time automatic spraying of colored paint multicolor gradual change vehicle body robot |
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