CN108151661B - Film thickness measuring system - Google Patents
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- CN108151661B CN108151661B CN201611099558.5A CN201611099558A CN108151661B CN 108151661 B CN108151661 B CN 108151661B CN 201611099558 A CN201611099558 A CN 201611099558A CN 108151661 B CN108151661 B CN 108151661B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
Abstract
A film thickness measurement system, comprising: the measuring head is suitable for measuring the film thickness of a measuring point on a workpiece to be measured so as to obtain a measuring signal related to the film thickness; the measuring head is fixed on the mechanical arm; the robot control component is coupled with the measuring head and the mechanical arm, is suitable for carrying out data acquisition on the measuring signal and controls the movement of the mechanical arm according to the data acquisition result; and the upper computer is coupled with the robot control component. The film thickness measuring system has the advantages of short film thickness measuring time, high system response speed, low system cost and convenience in maintenance.
Description
Technical Field
The invention relates to the field of film thickness measurement, in particular to a film thickness measuring system.
Background
Currently, there is an increasing need in the industry to apply film thickness measurement systems, such as in the automotive industry. The film thickness measurement system can quickly measure the thickness of a film layer applied to a workpiece, such as a painted automobile coating, to determine whether the coating meets a standard, and to make subsequent determinations based on the measurements. If classified according to the measurement principle, the film thickness measurement system can be classified into a laser film thickness measurement system, an X-ray film thickness measurement system, an ultrasonic film thickness measurement system, and the like.
As shown in fig. 1, fig. 1 shows a mainstream film thickness measurement system 100 in the prior art. The film thickness measurement system 100 may include: laser measuring head 10, data acquisition unit 20, upper computer 30, Programmable Logic Controller (PLC) control unit 40 (hereinafter referred to as PLC control unit 40), robot control unit 50 and the computerThe robot control unit 50 is coupled to a robot arm 60. The film thickness measuring system 100 adopts a laser measuring method, wherein the working medium in the laser measuring head 10 is carbon dioxide (CO)2). When measuring the film thickness, the laser measuring head 10 is fixed on the mechanical arm 60, and generates intermittent laser pulses under the Control of an Electronic Control Unit (ECU) 101, and the laser pulses are reflected to a measuring point of a workpiece 102 to be measured to obtain a measuring signal related to the film thickness; the data acquisition unit 20 acquires data of the measurement signal and transmits an acquisition result to the upper computer 30, and the upper computer 30 obtains and displays the film thickness of a measurement point on the workpiece 102 to be measured according to the acquisition result; the upper computer 30 also judges whether the measured film thickness is within a preset threshold range according to the acquisition result so as to judge whether the film thickness is qualified. The control master station of the film thickness measuring system 100 is the PLC control unit 40 which is independently provided. The PLC control part 40 controls the movement of the robot arm 60 via the robot control part 50 according to the determination result (whether the measured film thickness is acceptable or unacceptable) of the upper computer 30.
Therefore, because the film thickness measuring system in the prior art adopts the independently arranged PLC control component as the control master station, when the motion of the mechanical arm is controlled according to the judgment result of the upper computer, the data transmission path is complex, the data transmission time is long, the measurement time of the film thickness measuring system is possibly long, the system response is slow when the film thickness measurement is abnormal, and the high-yield requirement for measuring the film thickness of the workpiece to be measured cannot be met.
Disclosure of Invention
The invention solves the technical problem of how to shorten the film thickness measuring time of a film thickness measuring system and improve the response speed of the system so as to improve the productivity.
In order to solve the above technical problem, an embodiment of the present invention provides a film thickness measuring system, including: the measuring head is suitable for measuring the film thickness of a measuring point on a workpiece to be measured so as to obtain a measuring signal related to the film thickness; the measuring head is fixed on the mechanical arm; the robot control component is coupled with the measuring head and the mechanical arm, is suitable for carrying out data acquisition on the measuring signal and controls the movement of the mechanical arm according to the data acquisition result; and the upper computer is coupled with the robot control component.
Optionally, the robot control unit comprises: the data acquisition unit is suitable for acquiring data of the measurement signals to obtain a data acquisition result; and the main station controller is coupled with the data acquisition unit and is suitable for controlling the movement of the mechanical arm according to the data acquisition result of the data acquisition unit.
Optionally, the upper computer is electrically connected with the main station controller and the data acquisition unit, and is adapted to obtain the film thickness according to the data acquisition result and display the film thickness and/or the film thickness measurement result, wherein the film thickness measurement result is used for representing a comparison result between the film thickness and a preset film thickness standard value.
Optionally, when the difference between the film thickness and the film thickness standard value exceeds a preset threshold range, the film thickness measurement result indicates that the measurement fails, and the upper computer gives an alarm.
Optionally, when the film thickness measurement result indicates that the measurement fails, the upper computer sends a measurement failure instruction to the main station controller, so that the main station controller controls the mechanical arm to stop moving.
Optionally, the film thickness standard values corresponding to different measuring points on the workpiece to be measured are configured independently from each other.
Optionally, the film thickness standard values corresponding to the different measurement points are configured through the upper computer.
Optionally, the upper computer is further adapted to store and perform data analysis on the film thickness and/or film thickness measurement results to generate an interactive data report.
Optionally, the positions and/or the number of the measuring points on the workpiece to be measured are pre-configured by the upper computer.
Optionally, the upper computer is further adapted to receive a configuration of a measurement mode by a user, where the measurement mode at least includes: a production mode and a production monitoring mode.
Optionally, the measuring head is a laser measuring head.
Optionally, the film thickness measurement system further includes: and the electronic control unit is suitable for controlling the laser measuring head to generate laser pulses, and the laser pulses are transmitted to the workpiece to be measured.
Optionally, the working medium adopted by the laser measuring head is a solid laser material.
Compared with the prior art, the technical scheme of the embodiment of the invention has the following beneficial effects:
the film thickness measuring system provided by the embodiment of the invention can comprise a measuring head, a mechanical arm, a robot control part and an upper computer. The measuring head is suitable for measuring the film thickness of a measuring point on a workpiece to be measured so as to obtain a measuring signal related to the film thickness; the measuring head is fixed on the mechanical arm; the robot control component is coupled with the measuring head and the mechanical arm, is suitable for carrying out data acquisition on the measuring signal and controlling the movement of the mechanical arm according to the data acquisition result; the upper computer is coupled with the robot control component. Compared with the scheme that the PLC is used as the control master station in the prior art, the film thickness measuring system provided by the embodiment of the invention adopts the robot control part as the control master station, so that when the film thickness of the measuring point on the measured workpiece is measured, the data transmission time between the film thickness measuring system and the control master station and between the film thickness measuring system and the data acquisition unit is saved, and the measuring time is shortened. Specifically, compared to the prior art, the measurement time may be reduced by at least one data transmission link, that is, the corresponding transmission time cost may be saved (for example, if a data transmission step or link takes about 400ms, then 400ms may be saved). In addition, when the measurement is abnormal, the response speed of the system for stopping the movement of the mechanical arm to stop the film thickness measurement is also increased, and at least one step of data transmission (about 400ms in reference to the above example) can be saved compared with the prior art from the calculation of the response time. Therefore, the film thickness measuring system provided by the embodiment of the invention is short in film thickness measuring time and high in system response speed, and can meet the high-yield requirement of the market on the measured workpiece.
Further, the measuring head is a laser measuring head, and further, the working medium adopted by the laser measuring head may be a solid laser material. Compared with the prior art, the embodiment of the invention adopts the solid laser material as the working medium, and the laser measuring head does not need auxiliary equipment such as an air cooler, a water cooler and the like, and does not need complicated energy cables, so that the film thickness measuring system of the embodiment has a simple structure, relatively low cost and can reduce the manufacturing cost by more than 50%.
Furthermore, the upper computer is also suitable for receiving the configuration of the user on the measurement mode, can flexibly configure the measurement mode (such as a production mode or a production monitoring mode), overcomes the defect of overhigh production line rate, and improves the productivity.
Furthermore, the positions and/or the number of the measuring points on the workpiece to be measured are configured in advance through the upper computer, so that the measurement of the measuring points can be expanded and adjusted, and the measuring process is favorable for maintenance.
Further, the film thickness standard values corresponding to different measuring points on the workpiece to be measured are configured independently. Taking a measured workpiece as an automobile as an example, because different vehicle types and different positions of the same vehicle type all correspond to different measuring points on the measured workpiece, the film thickness standard values corresponding to different measuring points are different, and the configurable interfaces of the film thickness standard values corresponding to different measuring points are added, so that the embodiment can adapt to film thickness measurement of various vehicle body materials.
Furthermore, the upper computer is also suitable for storing and analyzing the film thickness and/or film thickness measuring results to generate an interactive data report, so that the film thickness and/or film thickness measuring results are analyzed at multiple angles, and the product quality is flexibly controlled.
Drawings
Fig. 1 is a schematic block diagram of a film thickness measurement system in the prior art.
Fig. 2 is a schematic structural block diagram of a film thickness measuring system according to an embodiment of the present invention.
FIG. 3 is a block diagram of another exemplary film thickness measuring system according to an embodiment of the present invention.
Fig. 4 is a flow chart of a film thickness measurement on the upper computer in the embodiment of the present invention.
Detailed Description
As described in the background section, the film thickness measuring system prevailing in the prior art has technical problems of long measuring time and slow system response.
The inventors of the present application conducted further analysis with respect to the film thickness measurement system 100 shown in fig. 1. With continued reference to fig. 1, the laser pulses generated by the laser measuring head 10 are controlled to heat the paint coating of the workpiece 102 (here, the workpiece 102 is an automobile subjected to electrophoretic painting, for example, and reflects attenuated thermal waves via an electrophoretic dip paint layer (KTL) in the paint coating, and the attenuated thermal waves are converted into electrical signals reflecting the film thickness of the measuring point on the workpiece to be measured by a sensing unit (not shown) in the ECU101, so that the data acquisition unit 20 performs data acquisition and transmits the acquisition results to the upper computer 30 for display and determination.
When the judgment result obtained by the upper computer 30 indicates that the film thickness of the measurement point on the workpiece to be measured is qualified or unqualified, the upper computer 30 feeds back the film thickness judgment information to the PLC control component 40, the PLC control component 40 (i.e. the control master station) sends a corresponding control command to the robot control component 50, and the robot control component 50 controls the mechanical arm 60 to move, so that the laser measurement head 10 moves to the next measurement point on the workpiece 102 to be measured to measure the film thickness, or the robot control component 50 controls the mechanical arm 60 to stop moving to terminate the measurement.
Therefore, the time for performing the film thickness measurement on one measurement point on the workpiece 102 under test mainly includes the time taken for the following six steps: the ECU101 controls the laser measuring head 10 (i.e., step (i)), the sensing unit transmits the electrical signal to the data acquisition unit 20 (i.e., step (ii)), the data acquisition unit 20 transmits the acquisition result to the upper computer 30 (i.e., step (iii)), the upper computer 30 transmits the film thickness determination information to the PLC control part 40 (i.e., step (i)), the PLC control part 40 transmits a control instruction to the robot control part 50 (i.e., step (v)), and the robot control part 50 controls the robot arm 60 (i.e., step (i)).
After the upper computer judges that the film thickness of the measuring point on the workpiece to be measured is unqualified, the system response time for stopping the movement of the mechanical arm 60 mainly comprises the time spent in the following three steps: the upper computer 30 transmits the film thickness determination information to the PLC control unit 40 (i.e., step (r)), the PLC control unit 40 transmits a control command to the robot control unit 50 (i.e., step (v)), and the robot control unit 50 controls the robot arm 60 (i.e., step (c)).
Further, the PLC control part 40 as a control master station may also directly transmit a control command to start or terminate the film thickness measurement of the workpiece 102 under test. Specifically, the PLC control part 40 may directly transmit a corresponding control command to the robot control part 50 (i.e., step (c)), and the robot control part 50 controls the movement of the robot arm 60 (i.e., step (c)); when the robot arm 60 moves the laser measuring head 10 to a specified measuring point on the measured workpiece 102, the PLC control unit 40 may send a corresponding control command to the upper computer 30 to start data acquisition (i.e., step (iv) and step (iii)), and start to measure the film thickness of the measured workpiece 102. Or specifically, when the measurement needs to be terminated in an emergency, the PLC control component 40 may directly send a corresponding control command to the robot control component 50 (i.e., step (v)), and the robot control component 50 controls the mechanical arm 60 to stop moving (i.e., step (c)), and sends a corresponding control command to the upper computer 30 to stop data acquisition (i.e., step (r)) and terminate the measurement of the film thickness of the workpiece 102 to be measured.
Therefore, when the independently installed PLC control unit 40 is used as a control master station, the data transmission path in the film thickness measurement system 100 is complicated, the number of data transmission steps is large, the transmission time is relatively long, the measurement time of the film thickness measurement system may be long, and the system response may be slow when an abnormal film thickness measurement is encountered.
In view of the above technical problems, an embodiment of the present invention provides a film thickness measuring system, and compared with the prior art, the film thickness measuring system in the embodiment of the present invention has a shorter film thickness measuring time and a faster system response speed, and can meet a high throughput requirement for a workpiece to be measured.
In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below.
Fig. 2 is a schematic structural block diagram of a film thickness measuring system according to an embodiment of the present invention. As shown in fig. 2, a film thickness measuring system 200 according to an embodiment of the present invention may include a measuring head 201, a robot arm 202, a robot control unit 203, and an upper computer 204.
The measuring head 201 is adapted to measure a film thickness of a measuring point on a workpiece 205 to be measured, so as to obtain a measuring signal associated with the film thickness. Also, the present embodiment does not limit the kind of the measuring head 201, for example, the measuring head 201 may be a laser measuring head, an X-ray measuring head, or an ultrasonic measuring head, etc.
The embodiment of the present invention is described by taking the measuring head 201 as a laser measuring head as an example. Optionally, the film thickness measuring system 200 may further include an electronic control unit 2011 adapted to control the laser measuring head to generate laser pulses, the laser pulses are transmitted to the workpiece to be measured, and then the measurement signal associated with the film thickness is obtained according to the signal reflected by the workpiece to be measured.
The arm 202 and the robot control unit 203 may be integrated in one and the same robot. The measuring head 201 is fixed to the robot arm 202. In particular, it may be fixed, for example, to the wrist axis of the robot. The robot control component 203 may be fixed with the robot arm 202, or may be coupled with the robot arm 202 via a communication cable or the like.
The robot control unit 203 is coupled to the measuring head 201 and the robot arm 202, and is adapted to perform data acquisition on the measuring signals and control the movement of the robot arm 202 according to the data acquisition result.
The upper computer 204 and the robot control component 203 are coupled to communicate with each other, wherein the two can communicate by using a network protocol (for example, Profinet), but the embodiment is not limited in particular.
Compared with the prior art in which the robot control unit 50 (see fig. 1) is only used for receiving a command for controlling a master station (PLC control unit 40) to control the movement of the robot arm 60, the robot control unit 203 in this embodiment is also used as a master station to control the film thickness measurement process of the film thickness measurement system 200 in addition to controlling the movement of the robot arm 202; furthermore, the robot control unit 203 itself may perform data acquisition on the measurement signal.
Specifically, the time for measuring the film thickness of a measurement point on the workpiece 205 to be measured may include the time spent in the following five steps: the electronic control unit 2011 controls the measuring head 201 to generate laser pulses (i.e., step (r)), the measuring head 201 transmits the measuring signals to the robot control component 203 to perform data acquisition (i.e., step (r)), the robot control component 203 transmits data acquisition results to the upper computer 204 (i.e., step (r)), the upper computer 204 feeds back information associated with the film thickness to the robot control component 203 (i.e., step (r)), and the robot control component 203 directly controls the movement of the mechanical arm 202 to drive the measuring head 201 to move to the next measuring point on the workpiece 205 to be measured.
Or, when the film thickness of the measurement point on the workpiece 205 to be measured is measured, the robot control component 203 transmits the data acquisition result to the upper computer 204, and directly controls the mechanical arm 202 to move without waiting for the upper computer 204 to feed back the information related to the film thickness, so that the measurement head 201 is driven to the next measurement point on the workpiece 205 to be measured. The time spent in the process mainly depends on the data transmission time of the first step, the second step and the sixth step.
And if the upper computer 204 is also suitable for judging whether the measured film thickness is qualified according to the data acquisition result. Then, when the determination result indicates that the measured film thickness is not acceptable, the film thickness measurement system 200 may control the robot 202 to stop moving to stop the film thickness measurement process. Then, after determining from the upper computer 204 that the film thickness of the workpiece to be measured is not acceptable, the system response time for terminating the movement of the robot arm 202 mainly includes the time taken for the following two steps: the upper computer 204 transmits the film thickness determination information to the robot control part 203 (that is, step two), and the robot control part 203 directly controls the robot arm 202 to stop moving.
Further, the robot control part 203 as a control master station may also directly transmit a control command to start or terminate the film thickness measurement of the workpiece 205 to be measured. Specifically, the robot control unit 203 may directly control the movement of the robot arm 202 (i.e., step |); after the robot arm 202 moves the measurement head 201 to a measurement point on the designated workpiece 205 to be measured, the robot control unit 203 starts data acquisition of the measurement signal and starts film thickness measurement. Or, when the measurement needs to be terminated in an emergency, the robot control component 203 serving as the control master station may directly control the mechanical arm 202 to stop moving (i.e., step (c)), and directly stop data acquisition to terminate the film thickness measurement.
If each data transmission process in the steps (i) to (sixty) is the same in the prior art scheme and the scheme of the embodiment shown in fig. 1, it is assumed to be 200 ms. Also, all data transmission processes employ a signal response mechanism, and thus, each data transmission process can be assumed to be 400 ms.
It can be obtained from the above analysis process that, since the film thickness measurement system 200 of the present embodiment uses the robot control component 203 as the control master station, when measuring the film thickness of the measurement point on the workpiece 205 to be measured, the data transmission time with the control master station and the data acquisition unit is saved, so that the measurement time is shortened. In particular, the measurement time can be saved by at least 400ms or 1.2s compared to the prior art solution shown in fig. 1. In addition, when an abnormality occurs in the measurement, the system for terminating the movement of the robot arm 202 to stop the film thickness measurement has a high response speed, and can save at least 400ms compared with the prior art scheme shown in fig. 1 in terms of response time. Therefore, the film thickness measuring system 200 of the embodiment of the invention has short film thickness measuring time and high system response speed, and can meet the high-yield requirement of the market on the measured workpiece.
In this embodiment of the present invention, when the measuring head is a laser measuring head, the film thickness measuring system 200 may further include the electronic control unit 2011, which is adapted to control the laser measuring head to generate laser pulses, and the laser pulses are emitted to the workpiece 205 to be measured.
In a specific implementation, the laser measurement head may generate laser pulses under the control of the electronic control unit 2011, and specifically, the electronic control unit 2011 may control the laser measurement head to generate stable laser pulses through temperature control, frequency stabilization, and the like. The laser pulses heat the paint coating of the workpiece 205 to be tested, and reflect attenuated thermal waves via KTL (here, the workpiece 205 to be tested is taken as an example of an automobile subjected to electrophoretic painting processing) in the paint coating, and the attenuated thermal waves are converted into the measurement signals via a sensing unit (not shown) in the electronic control unit 2011 so as to enable the robot control component 203 to perform data acquisition.
In the embodiment of the present invention, the laser measuring head is not limited to the laser measuring method for measuring the film thickness of the workpiece 205 to be measured, for example, the film thickness may be measured by using a measuring method such as laser interference and laser transmission, which is not limited in this embodiment.
In a specific implementation, the working medium adopted by the laser measuring head can be a solid laser material.
Since the working medium in the laser measuring head 10 in the film thickness measuring system 100 in the related art is carbon dioxide (refer to fig. 1), the film thickness measuring system 100 needs to dispose auxiliary equipment such as an air cooler (not shown) and a water cooler (not shown) for the laser measuring head 10, which is expensive. Alternatively, the auxiliary equipment may be controlled by the electronic control unit, requiring energy cables to connect the air and water coolers to the electronic control unit. In addition, it is also necessary to provide the air cooler with a flow controller for controlling the gas flow rate of the air cooler, and an explosion-proof safety unit for securing the safety of the air cooler. Therefore, the film thickness measurement system 100 is bulky and complicated in structure.
In contrast, the working medium adopted by the laser measuring head in the embodiment of the present invention is a solid laser material, and the laser measuring head does not need auxiliary equipment such as an air cooler, a water cooler, and the like, and does not need a complicated energy cable, so that the film thickness measuring system 200 of the present embodiment has a simple structure and a relatively low cost, and compared with the prior art scheme shown in fig. 1, the manufacturing cost can be reduced by more than 50%.
An embodiment of the film thickness measuring system will be described in detail below with reference to fig. 2 and 3.
In a specific implementation, the robot control component 203 may include a data acquisition unit 206 and a master station controller 207.
Wherein the data acquisition unit 206 is adapted to perform data acquisition on the measurement signal to obtain the data acquisition result; the main station controller 207 is coupled to the data acquisition unit 206 and is adapted to control the movement of the robot arm 202 according to the data acquisition result of the data acquisition unit 206. The data acquisition unit 206 adopts default parameters for data acquisition without being controlled by the main station controller 207, and may also control parameters such as a sampling rate and an input range of the data acquisition process by the main station controller 207, which is not particularly limited in this embodiment.
In specific implementation, the upper computer 204 is electrically connected to the main station controller 207 and the data acquisition unit 206, and is adapted to obtain the film thickness according to the data acquisition result and display the film thickness and/or a film thickness measurement result, where the film thickness measurement result is used to represent a comparison result between the film thickness and a preset film thickness standard value. Wherein, continuing to use workpiece 205 to be measured as an example, if the film thickness of its lacquer is too thin, after actual use or meet the collision, the paint film drops easily, if too thick, orange peel appears easily in the construction, the fracture appears easily during the stoving, consequently need with the film thickness that measures compare with the membrane thickness standard value.
When the difference between the film thickness and the film thickness standard value exceeds the preset threshold range, the film thickness measurement result indicates that the measurement fails, and the upper computer 204 can give an alarm so that a tester can make further decisions.
Further, the upper computer 204 may send a measurement failure instruction to the main station controller 207, so that the main station controller 207 controls the mechanical arm 202 to stop moving.
In this embodiment of the present invention, the upper computer 204 is further adapted to receive a configuration of a measurement mode by a user, where the measurement mode at least includes: a production mode and a production monitoring mode.
Wherein the production monitoring mode represents: the upper computer 204 judges the measured film thickness, and specifically, can compare the film thickness with the film thickness standard value to obtain a film thickness measurement result. And feeds back the film thickness measurement result to the robot control part 203, and the robot control part 203 controls the robot arm 202 to move or stop moving according to the film thickness measurement result.
The production mode represents: the upper computer 204 judges the measured film thickness, but does not feed back the film thickness measurement result to the robot control part 203, and the robot control part 203 directly controls the mechanical arm 202 to move after acquiring the measurement data, so as to continuously measure the film thickness. The film thickness and film thickness measurement results can be stored for convenient data analysis after measurement.
Specifically, the upper computer 204 may provide a configurable interface of the measurement mode through a human-computer interaction interface or a manner of reading file information, so as to receive the configuration of the measurement mode by the user, which is not particularly limited in this embodiment.
According to the embodiment of the invention, the defect of over-high fault rate of the production line can be overcome by flexibly configuring the measurement mode, and the productivity is improved.
In the embodiment of the invention, the positions and/or the number of the measuring points on the workpiece to be measured are configured in advance through the upper computer, so that the measurement of the measuring points can be expanded and adjusted, and the measuring process is favorable for maintenance.
And the film thickness standard values corresponding to different measuring points on the workpiece to be measured are configured independently. Taking the workpiece 205 to be measured as an automobile as an example, since different positions of different models and the same model correspond to different measurement points on the workpiece 205 to be measured, the film thickness standard values corresponding to the different measurement points are different. Then, by adding a configurable interface of the film thickness standard values corresponding to different measuring points, the embodiment can adapt to film thickness measurement of various vehicle body materials.
Specifically, the film thickness standard values corresponding to the different measurement points are configured by the upper computer, for example, configured by a human-computer interface or a mode of reading file information, and this embodiment is not particularly limited.
In the embodiment of the invention, the upper computer is also suitable for storing and analyzing the film thickness and/or film thickness measuring results to generate an interactive data report, so that the film thickness and/or film thickness measuring results are analyzed at multiple angles, and the product quality is flexibly controlled.
Referring to fig. 2 to 4, the upper computer 204 in the embodiment of the present invention may measure the film thickness of the workpiece 205 to be measured according to the process shown in fig. 4, but is not limited to this.
Step S101, receiving the configuration of the user to the measurement mode.
Step S102, configuring the position and/or the number of the measuring points on the workpiece to be measured.
And S103, independently configuring film thickness standard values corresponding to different measuring points on the workpiece to be measured.
And step S104, obtaining the film thickness according to the data acquisition result, and obtaining a film thickness measurement result according to the film thickness and a preset film thickness standard value.
And step S105, storing and analyzing the film thickness and/or film thickness measurement result to generate an interactive data report.
For more information of the steps S101 to S105, reference is made to the related description above, and the embodiment is not particularly limited.
It should be noted that, the embodiment only takes the execution flow of the upper computer 204 shown in fig. 4 as an example, but not limited thereto.
Although the present invention is disclosed above, the present invention is not limited thereto. Various changes and modifications may be effected therein by one skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (13)
1. A film thickness measurement system, comprising:
the measuring head is suitable for measuring the film thickness of a measuring point on a workpiece to be measured so as to obtain a measuring signal related to the film thickness;
the measuring head is fixed on the mechanical arm;
the robot control component is coupled with the measuring head and the mechanical arm, is suitable for carrying out data acquisition on the measuring signal and controls the movement of the mechanical arm according to the data acquisition result;
the upper computer is coupled with the robot control component;
the mechanical arm and the robot control component are integrated in the same robot;
the robot control component is used for controlling the movement of the mechanical arm and also used as a control master station to control the film thickness measuring process of the film thickness measuring system, and after the robot control component transmits the data acquisition result to the upper computer, the robot control component does not need to wait for the upper computer to feed back the information related to the film thickness and directly controls the movement of the mechanical arm.
2. The film thickness measurement system according to claim 1, wherein the robot control unit includes:
the data acquisition unit is suitable for acquiring data of the measurement signals to obtain a data acquisition result;
and the main station controller is coupled with the data acquisition unit and is suitable for controlling the movement of the mechanical arm according to the data acquisition result of the data acquisition unit.
3. The film thickness measuring system according to claim 2, wherein the upper computer is electrically connected to the main station controller and the data acquisition unit, and is adapted to obtain the film thickness according to the data acquisition result and display the film thickness and/or the film thickness measurement result, and the film thickness measurement result is used for representing the comparison result between the film thickness and a preset film thickness standard value.
4. The film thickness measuring system according to claim 3, wherein when the difference between the film thickness and the film thickness standard value exceeds a preset threshold range, the film thickness measuring result indicates that the measurement fails, and the upper computer gives an alarm.
5. The film thickness measuring system according to claim 4, wherein when the film thickness measurement result indicates a measurement failure, the upper computer sends a measurement failure instruction to the main station controller, so that the main station controller controls the robot arm to stop moving.
6. The film thickness measurement system according to claim 3, wherein the film thickness standard values corresponding to different measurement points on the workpiece to be measured are configured independently of each other.
7. The film thickness measurement system according to claim 6, wherein the film thickness standard values corresponding to the different measurement points are configured by the upper computer.
8. The film thickness measurement system of claim 3, wherein the host computer is further adapted to store and data analyze the film thickness and/or film thickness measurement results to generate an interactive data report.
9. The film thickness measurement system according to claim 3, wherein the position and/or number of the measurement points on the workpiece to be measured is pre-configured by the upper computer.
10. The film thickness measurement system according to claim 3, wherein the host computer is further adapted to receive a configuration of a measurement mode by a user, the measurement mode including at least: a production mode and a production monitoring mode.
11. The film thickness measurement system according to any one of claims 1 to 10, wherein the measurement head is a laser measurement head.
12. The film thickness measurement system according to claim 11, further comprising: and the electronic control unit is suitable for controlling the laser measuring head to generate laser pulses, and the laser pulses are transmitted to the workpiece to be measured.
13. The system of claim 11, wherein the working medium of the laser measuring head is a solid laser material.
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| CN112783078A (en) * | 2020-12-29 | 2021-05-11 | 西南技术物理研究所 | Intermittent optical monitoring signal synchronous sampling method |
| CN115318469B (en) * | 2022-08-29 | 2023-06-16 | 江西万橡家具集团有限公司 | Surface plastic spraying device for processing steel-wood furniture |
Family Cites Families (9)
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| US6484121B1 (en) * | 2000-09-07 | 2002-11-19 | Ford Global Technologies, Inc. | System for automatically measuring paint film thickness |
| JP2006329632A (en) * | 2005-05-23 | 2006-12-07 | Sii Nanotechnology Inc | Nondestructive inspection device and non-destructive inspection method using it |
| CN1987344A (en) * | 2006-11-04 | 2007-06-27 | 大连海事大学 | Flexible three dimension holographic measuring system |
| DE102007023826A1 (en) * | 2007-05-21 | 2008-11-27 | Polytec Gmbh | Method and device for non-contact vibration measurement |
| CN101694584A (en) * | 2009-10-23 | 2010-04-14 | 大连海事大学 | Aero-engine labyrinth disc hot list processing thickness information extraction system |
| US9310482B2 (en) * | 2012-02-10 | 2016-04-12 | Ascent Ventures, Llc | Methods for locating and sensing the position, orientation, and contour of a work object in a robotic system |
| EP2899499A1 (en) * | 2014-01-28 | 2015-07-29 | ABB Technology AG | Sensor system for characterizing a coating such as a paint film by THz radiation |
| DE102014105456B4 (en) * | 2014-04-16 | 2020-01-30 | Minikomp Bogner GmbH | Method for measuring the outer contour of three-dimensional measuring objects and associated measuring system |
| JP6096725B2 (en) * | 2014-09-09 | 2017-03-15 | アイシン精機株式会社 | Film thickness measuring apparatus and film thickness measuring method |
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