Detailed Description
The technical solutions of the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application, and it is apparent that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which are obtained by a person skilled in the art based on the embodiments of the present application, fall within the scope of protection of the present application.
The terms first, second and the like in the description and in the claims, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged, as appropriate, such that embodiments of the present application may be implemented in sequences other than those illustrated or described herein, and that the objects identified by "first," "second," etc. are generally of a type, and are not limited to the number of objects, such as the first object may be one or more. Furthermore, in the description and claims, "and/or" means at least one of the connected objects, and the character "/", generally means that the associated object is an "or" relationship.
Method embodiment
The sheet metal part spraying detection recognition method provided by the embodiment of the application is described in detail through specific embodiments and application scenes thereof by combining the accompanying drawings.
Referring to fig. 1, a step flow chart of a sheet metal part spraying detection and identification method provided by the embodiment of the application is shown, and as shown in fig. 1, the method specifically comprises the following steps:
Step 101, obliquely placing and fixing a sheet metal part to be detected in the target area, and placing the vibration component on the upper surface of the sheet metal part right below the laser emitter;
the sheet metal part is a product processed by a sheet metal process, and the sheet metal process is a processing technology for applying force to sheet metal to deform the sheet metal so as to manufacture a three-dimensional shape. In daily life, sheet metal parts can be used for manufacturing cabinets of distribution boards, cabinets of computers, shells of air-conditioning external machines and the like.
The target area refers to an area for detecting the spraying completion condition of the upper surface of the sheet metal part, and the sheet metal part is obliquely placed and fixed in the target area so as to identify the spraying completion condition of the upper surface of the sheet metal part.
In the embodiment of the application, the sheet metal part to be detected can be obliquely placed and fixed in the target area in various modes, and the embodiment of the application is not particularly limited. Illustratively, by using various kinds of process equipment to fix the sheet metal part in a target area at an inclined angle, for example, the target area is a certain specific area on the ground, a base is placed in the target area, the bottom surface of the base is square or rectangular, two opposite sides are triangular, the other side is square or rectangular, the upper surface of the base is also square or rectangular, a rectangular groove is engraved in the upper surface of the base, the bottom area of the groove is smaller than the area of the upper surface of the base, the shape of the bottom surface of the groove can be adjusted according to the shape of the sheet metal part so that the shape of the groove conforms to the shape of the sheet metal part, and the periphery of the groove is closed so that the sheet metal part does not move when placed inside the groove. The sheet metal part is placed in the groove on the upper surface of the base, so that the sheet metal part is obliquely placed in the target area at a certain inclination angle.
The vibration component can move on the upper surface of the sheet metal part by taking the gravity of the vibration component and the force generated by vibration as power. The shape of the vibrating element is generally a regular shape, for example, the vibrating element is a cube or a cuboid. The contact surface of the vibration component and the sheet metal part is large, and in the movement process of the vibration component, the sheet metal part generates friction force acting on the vibration component through the contact surface of the vibration component and the sheet metal part, and the contact surface of the vibration component and the sheet metal part is smooth, so that the friction coefficient of the vibration component is small in influence on the friction force actually received by the vibration component. In embodiments of the present application, the vibration assembly may be placed in a variety of ways, for example, by controlling a robotic arm to hold the vibration assembly, placing the vibration assembly on the upper surface of the sheet metal part.
The inclination angle of the sheet metal part obliquely placed and fixed can be any angle in a designated section. Illustratively, the interval may be 0 ° to 90 °.
102, Controlling the vibration assembly to start vibrating at a preset frequency, and utilizing self gravity to move downwards along the upper surface of the sheet metal part until the vibration is finished and then standing;
The preset frequency refers to the vibration times of the vibration assembly in unit time. In the same time, the higher the preset frequency of the vibration assembly is, the more the vibration frequency of the vibration assembly is, and the larger the downward moving distance along the upper surface of the sheet metal part is. In order to ensure that the downward moving distance of the vibration assembly along the upper surface of the sheet metal part does not exceed the length of the sheet metal part, the preset frequency of the vibration assembly is controlled within a corresponding range according to the length of the sheet metal part and the quality of the vibration assembly.
When the vibration assembly is just at rest on the upper surface of the sheet metal part, the static friction force and the component force of gravity along the upper surface of the sheet metal part are received along the upper surface of the sheet metal part, the static friction force is equal to the component force of gravity along the upper surface of the sheet metal part, after the vibration assembly starts vibrating, the sliding friction force received by the vibration assembly is smaller than the component force of gravity along the upper surface of the sheet metal part, after the vibration assembly finishes vibrating, the sliding friction force received by the vibration assembly is greater than the component force of gravity along the upper surface of the sheet metal part, and the vibration assembly continues to move downwards along the upper surface of the sheet metal part under the action of the sliding friction force until stopping.
Optionally, baffles are arranged on two sides of the sheet metal part, so that the vibrating assembly cannot move out of two sides of the sheet metal part when moving downwards along the upper surface of the sheet metal part by utilizing self gravity, wherein the width of the vibrating assembly is equal to the width of the sheet metal part.
And step 103, determining the spraying completion condition of the sheet metal part according to the moving distance of the vibration assembly on the upper surface of the sheet metal part.
The distance that the vibration assembly moves along the upper surface of the sheet metal part is the distance between the vibration assembly and the starting position of the vibration assembly placed on the upper surface of the sheet metal part, wherein the distance that the vibration assembly moves downwards along the sheet metal part until the vibration is stopped and the stop position is stationary.
In the embodiment of the application, the moving distance of the vibration component on the upper surface of the sheet metal part can be acquired in various modes. For example, the processor may include a measuring module that measures a distance between an end position and a start position of the vibration assembly after the vibration assembly stops moving by the measuring scale, and transmits the measured moving distance to the processor, and the processor determines a completion of spraying of the sheet metal part according to the moving distance of the vibration assembly on the upper surface of the sheet metal part.
It should be noted that the spraying completion condition of the sheet metal part may include spraying completion, non-spraying, incomplete spraying, and the like. In the embodiment of the application, the incompleteness of the spraying and the non-spraying belong to the incomplete spraying of the sheet metal part. After the upper surface of the sheet metal part is sprayed, the friction coefficient of the upper surface of the sheet metal part can be reduced by the spraying material on the upper surface of the sheet metal part. When the spraying completion condition of sheet metal component is different, the spraying material coverage area of the upper surface of sheet metal component is different to lead to the coefficient of friction of the upper surface of sheet metal component different. Specifically, when the upper surface of the sheet metal part is sprayed, the upper surface of the sheet metal part is covered by the spraying material, namely the coverage area of the spraying material is equal to the area of the upper surface of the sheet metal part, when the upper surface of the sheet metal part is sprayed incompletely, the coverage area of the spraying material is smaller than the area of the upper surface of the sheet metal part, and when the sheet metal part is not sprayed, the coverage area of the spraying material is equal to 0. Therefore, the friction coefficient of the sheet metal part after the spraying is completed is smaller than that of the upper surface of the sheet metal part when the spraying is not completed.
The larger the friction coefficient is, the larger the generated friction force is, and the smaller the moving distance of the vibration assembly on the upper surface of the sheet metal part is under the condition that the attribute characteristics of the vibration assembly are unchanged. Specifically, the moving distance of the vibration assembly along the upper surface of the sheet metal part after the upper surface of the sheet metal part is sprayed is greater than the moving distance of the vibration assembly along the upper surface of the sheet metal part when the upper surface of the sheet metal part is not sprayed. The upper surface of the sheet metal part is sprayed, the moving distance of the vibration assembly on the upper surface of the sheet metal part is s_1, and when the upper surface of the sheet metal part is not sprayed, the moving distance of the vibration assembly on the upper surface of the sheet metal part is s_2, wherein s_1> s_2.
Specifically, according to the calculation formula f= mgu ×cos θ (m is the mass of the vibration assembly, g is the gravitational acceleration constant, and θ is the inclination angle of the sheet metal part), when other conditions are unchanged, the friction coefficient of the upper surface of the sheet metal part is reduced, and when the vibration assembly moves along the upper surface of the sheet metal part, the sliding friction force applied by the vibration assembly is correspondingly reduced. When the vibration assembly moves downwards along the upper surface of the sheet metal part, the direction of sliding friction force born by the vibration assembly is opposite to the direction of movement of the vibration assembly along the upper surface of the sheet metal part, when the friction coefficient of the upper surface of the sheet metal part is reduced, the sliding friction force born by the vibration assembly is reduced, the component force of gravity of the vibration assembly along the upper surface of the sheet metal part is unchanged, and the force born by the vibration assembly opposite to the movement direction of the vibration assembly is reduced. According to the relation between the acting force and the acceleration of the object during movement, the larger the acting force is, the larger the acceleration is. When the initial speeds are the same, the smaller the force of the vibration assembly opposite to the movement direction is, the smaller the acceleration of the vibration assembly is, the longer the time required for the speed to be reduced to 0 is, and the larger the distance that the vibration assembly moves along the upper surface of the sheet metal part is.
As an example, according to the calculation formula f= umgcos θ of the sliding friction force, when the mass m of the vibration assembly and the inclination angle θ of the sheet metal part are unchanged, the sliding friction force of the vibration assembly on the upper surface of the sheet metal part is directly proportional to the friction coefficient u of the upper surface of the sheet metal part. The friction coefficient of the upper surface of the sheet metal part after spraying is u_1, the sliding friction force born by the vibration component is f_1, the component force of gravity of the vibration component along the upper surface of the sheet metal part is G_1, the force born by the vibration component when the vibration component moves downwards along the upper surface of the sheet metal part is F_1=G_1-f_1, and the distance of the downward movement of the vibration component along the upper surface of the sheet metal part is s_1;
The friction coefficient of the upper surface of the sheet metal part is u_2 when the upper surface of the sheet metal part is not sprayed, the corresponding sliding friction force born by the vibration assembly is f_2, and then the force F_2=g_1-f_2 born by the vibration assembly when the vibration assembly moves downwards along the upper surface of the sheet metal part, and the distance of the downward movement of the vibration assembly along the upper surface of the sheet metal part is s_2. When u_1< u_2, f_1< f_2, f_1> f_2. After the spraying of the sheet metal part is finished and under the condition that the sheet metal part is not finished, the mass of the vibration assembly and the initial speed of downward movement along the upper surface of the sheet metal part are consistent, and the movement distance s_1 of the vibration assembly along the upper surface of the sheet metal part under the action of F_1 is greater than the movement distance s_2 along the upper surface of the sheet metal part under the action of F_2.
Therefore, after the upper surface of the sheet metal part is sprayed, the moving distance of the vibration assembly along the upper surface of the sheet metal part is greater than that when the upper surface of the sheet metal part is not sprayed, and the moving distance of the vibration assembly along the upper surface of the sheet metal part is not finished. Similarly, when the spraying completion conditions of the upper surface of the sheet metal part are different, the moving distances of the corresponding vibration components on the upper surface of the sheet metal part are different. According to the moving distance of the vibration assembly on the upper surface of the sheet metal part, the spraying completion condition of the upper surface of the sheet metal part can be determined.
According to the embodiment of the application, a sheet metal part to be detected is obliquely placed and fixed in a target area, a vibration assembly is placed on the upper surface of the sheet metal part right below a laser emitter, the vibration assembly is controlled to start vibrating at a preset frequency and moves downwards along the upper surface of the sheet metal part by utilizing self gravity until the sheet metal part is stationary after vibration is finished, and the spraying completion condition of the sheet metal part is determined according to the moving distance of the vibration assembly on the upper surface of the sheet metal part. From this, through the removal distance of automatic acquisition vibration subassembly at the upper surface of sheet metal component, confirm the spraying completion condition of sheet metal component, replace manual detection, improved the degree of accuracy to sheet metal component detection's efficiency and testing result.
Optionally, step 102 of controlling the vibration assembly to start vibrating at a preset frequency and move downward along the upper surface of the sheet metal part by using self gravity until the vibration assembly is stationary after the vibration is finished may include:
The motor is arranged in the vibration assembly, the motor is controlled to start rotating through a scheduling signal, so that the vibration assembly starts vibrating at preset frequency, and the vibration assembly moves downwards along the upper surface of the sheet metal part by utilizing self gravity until the vibration assembly is stationary after the vibration is finished.
When the vibration component is static on the upper surface of the sheet metal part, the static friction force and the component force of the gravity of the vibration component along the upper surface of the sheet metal part are equal, a motor is arranged in the vibration component, and when the motor is controlled to start rotating through a scheduling signal, upward acting force perpendicular to the upper surface of the sheet metal part exists. Because the static friction force received by the vibration component is positively correlated with the downward acting force of the vibration component perpendicular to the upper surface of the sheet metal part, the upward acting force of the vibration component perpendicular to the upper surface of the sheet metal part is reduced when the motor rotates, the static friction force received by the vibration component is correspondingly reduced, and the component force of the gravity of the vibration component along the upper surface of the sheet metal part is greater than the static friction force received by the vibration component, so that the vibration component can downwards move along the upper surface of the sheet metal part by utilizing the gravity of the vibration component. When the motor receives the dispatching signal to stop rotating, the vibration assembly stops vibrating and stops moving along the upper surface of the sheet metal part under the action of friction force.
According to the embodiment of the application, a sheet metal part to be detected is obliquely placed and fixed in a target area, a vibration assembly is placed on the upper surface of the sheet metal part right below a laser emitter, a motor is arranged in the vibration assembly, the motor is controlled to start rotating through a scheduling signal so that the vibration assembly starts vibrating at a preset frequency, when the motor rotates, an upward acting force perpendicular to the sheet metal part exists, the vibration assembly moves downwards along the upper surface of the sheet metal part by utilizing self gravity until the vibration assembly is stationary after the vibration is finished, and the spraying completion condition of the sheet metal part is determined according to the moving distance of the vibration assembly on the upper surface of the sheet metal part. From this, be equipped with the motor inside vibrating subassembly, the motor is controlled through the scheduling signal, has realized the full automatization control that vibrating subassembly removed along the upper surface of sheet metal component, has improved the efficiency to sheet metal component spraying completion condition detection.
Optionally, before step 101, the method may further include:
and adjusting the preset frequency of the vibration assembly according to the length of the sheet metal part and the mass of the vibration assembly.
In the embodiment of the application, the frequency of the vibration component is adjusted according to the length of the sheet metal part, so that the moving distance of the vibration component on the upper surface of the sheet metal part after stopping vibration is smaller than or equal to the length of the sheet metal part.
Optionally, the spraying detection system further includes a laser emitter and a laser receiver, the laser receiver is disposed on an upper surface of the vibration component, and step 103 of determining, according to a moving distance of the vibration component on the upper surface of the sheet metal part, a spraying completion condition of the sheet metal part may include:
Controlling the laser transmitter to rotate until the laser receiver senses a light beam emitted by the laser transmitter, and controlling the laser transmitter to stop rotating, and recording a rotation dip angle from starting to stopping rotating of the laser transmitter, wherein the rotation dip angle is positively related to the moving distance of the vibration component on the upper surface of the sheet metal part;
and determining the spraying completion condition of the sheet metal part according to the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part.
The laser transmitter is a device capable of converting electric energy into laser energy, and consists of a plurality of parts including a laser medium, a pumping source, an optical resonant cavity, an output coupler and the like. The laser medium is a medium for converting light beams into laser light through energy storage and method, a pumping source is used for providing energy required for activating the laser medium, common pumping sources comprise optical pumping, electric pumping and the like, an optical resonant cavity is used for repeatedly transmitting and reflecting light rays in the laser medium, so that the laser energy is enhanced, and an output coupler is used for taking out the light beams from the optical resonant cavity. Depending on the physical state of the laser medium of the laser transmitter, the laser transmitter may be classified into a solid state laser, a gas laser, a liquid laser, etc., where the solid state laser refers to a laser transmitter in which the physical state of the laser medium is solid state, for example, a ruby laser is composed of ruby as the laser medium.
The laser transmitter may be fixed above the target area by a fixing device in the same vertical direction as the end of the sheet metal part away from the ground, so that the beam emitted by the laser transmitter is directed vertically downwards before no movement occurs.
The rotation inclination angle refers to an included angle between the starting position of the laser transmitter and the ending position of the laser transmitter when the laser transmitter rotates the light beam until the laser receiver senses the light beam emitted by the laser transmitter and stops rotating. Illustratively, the rotational inclination is any angle between [0 °,90 ° ].
In the process that the vibration component moves along the upper surface of the sheet metal part, the laser transmitter continuously rotates and emits laser until the laser receiver placed on the vibration component senses the light beam emitted by the laser transmitter, and then the laser transmitter is controlled to stop rotating. The processor sends a rotation instruction to control the laser emitter to rotate when the vibration component is stationary after vibration is finished, generates a sensing instruction after the laser receiver senses a light beam sent by the laser emitter, sends the sensing instruction to the processor, and sends a stop instruction to control the laser emitter to stop rotating after the processor receives the sensing instruction. Or the processor can comprise a monitoring module which is used for monitoring whether the laser receiver senses the light beam after the laser transmitter starts to rotate, and controlling the laser transmitter to stop rotating after the laser receiver senses the light beam.
It should be noted that, referring to fig. 4, the sheet metal part is placed directly under the laser emitter, when the moving distance of the vibration component on the upper surface of the sheet metal part is greater, the relative distance between the vibration component and the laser emitter is also greater, and when the moving distance of the vibration component relative to the laser emitter is greater, the relative distance between the laser receiver and the laser emitter is also greater, because the laser receiver is placed on the upper surface of the vibration component. The greater the distance the laser receiver moves relative to the laser transmitter, the greater the inclination of the laser receiver to sense the rotation of the beam as the laser transmitter needs to move the beam. Similarly, when the distance of the vibration component moving on the upper surface of the sheet metal part is smaller, the relative distance between the vibration component and the laser transmitter is smaller, and when the distance of the vibration component moving relative to the laser transmitter is smaller, the relative distance between the laser receiver and the laser transmitter is smaller, and the laser transmitter needs to rotate the light beam to enable the laser receiver to sense the rotation dip angle of the light beam to be smaller. Thus, the rotational inclination and the moving distance of the vibration assembly on the upper surface of the sheet metal member are positively correlated.
In the embodiment of the application, the spraying completion condition of the sheet metal part can be determined according to the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part by acquiring the rotation inclination angle of the laser transmitter. In particular, the friction coefficient of the upper surface of the sheet metal member may be determined in various manners through experiments, to which the embodiment of the present application is not particularly limited. The experimental device comprises a sheet metal part, a sliding object and a spring dynamometer, wherein the sheet metal part is obliquely fixed at an angle theta, the sliding object is placed on the upper surface of the sheet metal part, the mass of the sliding object is m, the force F born by the sliding object along the upper surface of the sheet metal part when the sliding object moves downwards along the upper surface of the sheet metal part is measured and recorded by the spring dynamometer, F=mgsin theta-umgcos theta, and the current friction coefficient of the upper surface of the sheet metal part can be obtained according to the F, the mass of the sliding object and the oblique inclination angle theta of the sheet metal part.
Or the experimental device comprises a sheet metal part, a sliding object and a spring dynamometer, wherein the sheet metal part is horizontally arranged, the sliding object is arranged on the upper surface of the sheet metal part, a horizontal force F is continuously applied to the sliding object, so that the sliding object moves at a uniform speed, when the sliding object moves at a uniform speed, the horizontal force is balanced, namely the sliding friction force is equal to F, and the friction coefficient of the upper surface of the sheet metal part can be obtained according to a calculation formula of the sliding friction force.
Under the condition that different spraying completion of the sheet metal part is achieved through multiple experiments, the friction coefficient of the upper surface of the sheet metal part and the rotation dip angle of the laser transmitter are obtained, and the mapping relation between the rotation dip angle and the friction coefficient of the sheet metal part is obtained. The method comprises the steps of obtaining a friction coefficient u_1 of the upper surface of a current sheet metal part when the sheet metal part is not sprayed, then obliquely fixing the sheet metal part, placing a vibration component on the upper surface of the sheet metal part right below a laser emitter, controlling the vibration component to start vibrating at a preset frequency and move downwards along the upper surface of the sheet metal part by utilizing self gravity until the vibration is finished and then to rest, controlling the laser emitter to move until the laser emitter senses a light beam emitted by the laser emitter, controlling the laser emitter to stop moving until the laser emitter senses the light beam, and recording a rotation inclination angle alpha_1 from the beginning to the stopping moving, obtaining the friction coefficient u_2 of the upper surface of the current sheet metal part and the rotation inclination angle alpha_2 of the laser emitter when the sheet metal part is sprayed incompletely, respectively obtaining the friction coefficient u_n of the upper surface of the current sheet metal part and the rotation inclination angle alpha_n of the laser emitter under corresponding conditions when the sheet metal part is sprayed differently.
After the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part is obtained, the spraying completion condition of the sheet metal part can be determined according to the mapping relation by obtaining the rotation inclination angle of the laser transmitter.
In the embodiment of the application, the spraying detection system comprises a laser emitter and a laser receiver, wherein the laser receiver is arranged on the upper surface of the vibration component, after the vibration component is in vibration ending and static state, the laser emitter is controlled to rotate until the laser receiver senses a light beam emitted by the laser emitter, the laser emitter is controlled to stop rotating, the rotating inclination angle from starting to stopping rotating is recorded, the spraying completion condition of the sheet metal part is determined according to the mapping relation between the rotating inclination angle of the laser emitter and the friction coefficient of the sheet metal part, whether the sheet metal part is sprayed or not is detected manually is replaced, and the efficiency of identifying the spraying completion condition of the sheet metal part is improved.
Optionally, after step 103, the method may further include:
and (3) conveying the sheet metal part which is sprayed to the next working procedure for treatment, and placing the sheet metal part which is not sprayed to the abnormal mark area for reworking treatment.
In the embodiment of the application, the sheet metal part which is not coated is placed in the abnormal mark area for reworking treatment, so that the sheet metal part which is not coated is further supplemented with coating, and the success rate of coating the sheet metal part is improved.
Referring to fig. 2, a step flow chart of another method for detecting and identifying spraying of a sheet metal part provided by the embodiment of the application is shown, and as shown in fig. 2, the method specifically includes the following steps:
Step 201, obliquely placing and fixing a sheet metal part to be detected in the target area, and placing the vibration component on the upper surface of the sheet metal part right below the laser emitter;
this step may refer to the detailed description of step 101, and will not be described here again.
And 202, adjusting the preset frequency of the vibration assembly according to the length of the sheet metal part and the mass of the vibration assembly.
It should be noted that, the preset frequency of the vibration assembly affects the distance that the vibration assembly moves down along the upper surface of the sheet metal part in the same time, for example, when the preset frequency of the vibration assembly is h_1, the distance that the vibration assembly moves down along the upper surface of the sheet metal part is s_1 in time t, the preset frequency of the vibration assembly is h_2, the distance that the vibration assembly moves down along the upper surface of the sheet metal part is s_2 in time t, and when h_1< h_2, s_1< s_2 in the same time t.
The vibration assembly needs to move in the length range of the sheet metal part, the moving distance of the vibration assembly on the upper surface of the sheet metal part is obtained, and the spraying completion condition of the sheet metal part is determined according to the moving distance. Therefore, it is necessary to adjust the frequency of the vibration assembly according to the length of the sheet metal member so that the moving distance of the vibration assembly on the upper surface of the sheet metal member after stopping the vibration is less than or equal to the length of the sheet metal member.
For example, when the length of the sheet metal part is l_1, the preset frequency of the vibration assembly is controlled within the interval of [ h_1, h_2], so that the distance that the vibration assembly moves downwards along the upper surface of the sheet metal part can be smaller than or equal to the length of the sheet metal part under the condition that spraying is not completed and spraying is completed.
Step 203, controlling the vibration assembly to start vibrating at a preset frequency, and utilizing self gravity to move downwards along the upper surface of the sheet metal part until the vibration is finished and then standing;
this step may refer to the detailed description of step 101, and will not be described here again.
Optionally, the spraying detection system further comprises a laser emitter and a laser receiver, wherein the laser receiver is arranged on the upper surface of the vibration component;
Step 204, controlling the laser transmitter to rotate until the laser receiver senses the light beam emitted by the laser transmitter, and controlling the laser transmitter to stop rotating, and recording the rotation dip angle of the laser transmitter from starting to stopping rotating, wherein the rotation dip angle is positively related to the moving distance of the vibration component on the upper surface of the sheet metal part;
The rotation inclination angle refers to an included angle between the starting position of the laser transmitter and the ending position of the laser transmitter when the laser transmitter rotates the light beam until the laser receiver senses the light beam emitted by the laser transmitter and stops rotating. Illustratively, the rotational inclination is any angle between [0 °,90 ° ].
Optionally, controlling the rotation of the laser transmitter, guiding the laser receiver to sense the light beam emitted by the laser transmitter, and controlling the laser transmitter to stop rotating may include:
When the vibration assembly is stationary after vibration is finished, the laser transmitter is controlled to rotate, a sensing instruction is generated after the laser receiver senses a light beam emitted by the laser transmitter, the sensing instruction which senses the light beam is sent to the processor, and the processor receives the instruction and then controls the laser transmitter to stop rotating. Or the processor can comprise a monitoring module which is used for monitoring whether the laser receiver senses the light beam after the laser transmitter starts to rotate, and controlling the laser transmitter to stop rotating after the laser receiver senses the light beam.
It should be noted that, referring to fig. 4, the sheet metal part is placed directly under the laser emitter, when the moving distance of the vibration component on the upper surface of the sheet metal part is greater, the relative distance between the vibration component and the laser emitter is also greater, and when the moving distance of the vibration component relative to the laser emitter is greater, the relative distance between the laser receiver and the laser emitter is also greater, because the laser receiver is placed on the upper surface of the vibration component. The greater the distance the laser receiver moves relative to the laser transmitter, the greater the inclination of the laser receiver to sense the rotation of the beam as the laser transmitter needs to move the beam. Similarly, when the distance of the vibration component moving on the upper surface of the sheet metal part is smaller, the relative distance between the vibration component and the laser transmitter is smaller, and when the distance of the vibration component moving relative to the laser transmitter is smaller, the relative distance between the laser receiver and the laser transmitter is smaller, and the laser transmitter needs to rotate the light beam to enable the laser receiver to sense the rotation dip angle of the light beam to be smaller. Thus, the rotational inclination and the moving distance of the vibration assembly on the upper surface of the sheet metal member are positively correlated.
Under the condition that the spraying of the sheet metal part is not finished, after the vibration assembly stops moving on the upper surface of the sheet metal part, the laser transmitter is controlled to rotate until the laser receiver senses the light beam emitted by the laser transmitter. The method comprises the steps of generating a sensing instruction after a laser receiver senses a light beam emitted by a laser emitter, sending the sensing instruction which is sensed by the laser receiver to a processor, controlling the laser emitter to stop rotating after the processor receives the instruction, recording a rotating inclination angle alpha_1 from starting to stopping rotating of the laser emitter, and recording a rotating inclination angle alpha_2 from starting to stopping rotating of the laser emitter under the condition that a sheet metal part finishes spraying, wherein alpha_1 < alpha_2.
And 205, determining the spraying completion condition of the sheet metal part according to the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part.
It should be noted that when the spraying completion conditions of the upper surface of the sheet metal part are different, the friction coefficients of the upper surface of the sheet metal part are different, the moving distance of the vibration component along the upper surface of the sheet metal part is different, the friction coefficient corresponding to the spraying completion conditions of the upper surface of the sheet metal part and the moving distance of the vibration component on the upper surface of the sheet metal part have a mapping relation, and the rotation inclination angle of the laser transmitter and the moving distance of the vibration component on the upper surface of the sheet metal part are positively correlated. Therefore, a corresponding mapping relationship exists between the rotation inclination angle and the friction coefficient of the sheet metal part.
In the embodiment of the application, under the condition that the spraying of the sheet metal part is completed differently, the friction coefficient of the upper surface of the sheet metal part and the rotation inclination angle of the laser transmitter are obtained through multiple experiments, and the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part is obtained. The method comprises the steps of obtaining a friction coefficient u_1 of the upper surface of a current sheet metal part in a manner of measuring the friction coefficient of the upper surface of the sheet metal part, obliquely fixing the sheet metal part, placing a vibration component on the upper surface of the sheet metal part right below a laser emitter, controlling the vibration component to vibrate at a preset frequency and move downwards along the upper surface of the sheet metal part by utilizing self gravity until the vibration is finished and then to be stationary, controlling the laser emitter to move until the laser emitter is controlled to stop moving after the laser receiver senses a light beam emitted by the laser emitter, and recording a rotation inclination angle alpha_1 of the laser emitter from the beginning to the stopping moving, obtaining the friction coefficient u_2 of the upper surface of the current sheet metal part and the rotation inclination angle alpha_2 of the laser emitter when the sheet metal part is incompletely sprayed, respectively obtaining the friction coefficient u_n of the upper surface of the current sheet metal part and the rotation inclination angle alpha_n of the laser emitter under the corresponding conditions when the sheet metal part is finished in different spraying conditions. Through multiple experiments, the mapping relation between the friction coefficient of the upper surface of the sheet metal part and the rotation inclination angle can be obtained.
Optionally, determining the spraying completion condition of the sheet metal part according to the mapping relationship between the rotation inclination angle and the friction coefficient of the sheet metal part in step 205 may include the following steps:
Step 2051, determining a target friction coefficient of the upper surface of the sheet metal part under the condition that the sheet metal part is sprayed;
In the embodiment of the present application, the target friction coefficient of the upper surface of the sheet metal part may be determined in various manners through experiments, which is not particularly limited in the embodiment of the present application. The experimental device comprises a sheet metal part, a sliding object and a spring dynamometer, wherein the sheet metal part is obliquely fixed at an angle theta, the sliding object is placed on the upper surface of the sheet metal part, the mass of the sliding object is m, the force F born by the sliding object along the upper surface of the sheet metal part when the sliding object moves downwards along the upper surface of the sheet metal part is measured and recorded by the spring dynamometer, F=mgsin theta-umgcos theta, and the current friction coefficient of the upper surface of the sheet metal part can be obtained according to the F, the mass of the sliding object and the oblique inclination angle theta of the sheet metal part. In the experiment, the target friction coefficient of the upper surface of the sheet metal part is determined under the condition that the sheet metal part is sprayed.
Or the experimental device comprises a sheet metal part, a sliding object and a spring dynamometer, wherein the sheet metal part is horizontally arranged, the sliding object is arranged on the upper surface of the sheet metal part, a horizontal force F is continuously applied to the sliding object, so that the sliding object moves at a uniform speed, when the sliding object moves at a uniform speed, the horizontal force is balanced, namely the sliding friction force is equal to F, and the friction coefficient of the upper surface of the sheet metal part can be obtained according to a calculation formula of the sliding friction force. Through the same calculation mode, the target friction coefficient of the upper surface of the sheet metal part can be determined under the condition that the sheet metal part is sprayed.
Step 2052, determining a preset threshold value of the rotation dip angle corresponding to the target friction coefficient according to the mapping relation between the rotation dip angle and the friction coefficient of the sheet metal part;
According to the obtained mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part, when the target friction coefficient of the sheet metal part under the condition of finishing spraying is determined, a preset threshold corresponding to the target friction coefficient can be determined.
And step 2053, when the rotation inclination angle is larger than a preset threshold value, determining that the spraying of the sheet metal part is finished.
In the embodiment of the application, the friction coefficient of the sheet metal part after spraying is different from the friction coefficient of the sheet metal part after spraying is not finished, and specifically, the friction coefficient of the sheet metal part after spraying on the upper surface is smaller than the friction coefficient of the sheet metal part after spraying is finished. According to the calculation formula f= mgu ×cos θ (m is the mass of the vibration component, g is the gravitational acceleration constant, θ is the inclination angle of the sheet metal part), when other conditions are unchanged, the friction coefficient of the upper surface of the sheet metal part is reduced, and when the vibration component moves along the upper surface of the sheet metal part, the sliding friction force applied by the vibration component is correspondingly reduced. When the vibrating assembly moves downwards along the upper surface of the sheet metal part, the direction of sliding friction force born by the vibrating assembly is opposite to the direction of movement of the vibrating assembly along the upper surface of the sheet metal part, when the friction coefficient of the upper surface of the sheet metal part is reduced, the sliding friction force born by the vibrating assembly is reduced, the component force of gravity of the vibrating assembly along the upper surface of the sheet metal part is unchanged, the force born by the vibrating assembly opposite to the direction of movement of the vibrating assembly is reduced, and the moving distance of the vibrating assembly moving downwards along the upper surface of the sheet metal part is larger.
The greater the distance of movement of the vibration assembly on the upper surface of the sheet metal part, the greater the relative distance between the vibration assembly and the laser transmitter, and the greater the distance of movement of the vibration assembly relative to the laser transmitter, the greater the relative distance between the laser receiver and the laser transmitter, since the laser receiver is disposed on the upper surface of the vibration assembly. The greater the distance the laser receiver moves relative to the laser transmitter, the greater the angle the laser transmitter needs to turn the beam so that the laser receiver senses the beam.
Therefore, when the friction coefficient of the upper surface of the sheet metal part is smaller, the greater the moving distance of the vibration assembly along the upper surface of the sheet metal part is, the greater the rotation inclination angle of the laser transmitter is. According to the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part, when the target friction coefficient of the sheet metal part under the condition of finishing spraying is determined, a preset threshold corresponding to the target friction coefficient can be determined. When the rotation inclination angle is larger than the threshold value, the friction coefficient of the upper surface of the sheet metal part can be indicated to be smaller than the target friction coefficient, namely, the spraying of the upper surface of the sheet metal part is finished. When the rotation inclination angle is smaller than the threshold value, it can be indicated that the friction coefficient of the upper surface of the sheet metal part is larger than the target friction coefficient, namely, the spraying of the upper surface of the sheet metal part is not completed.
Optionally, the method for detecting and identifying the spraying of the sheet metal part provided by the embodiment of the application further comprises the following steps:
And 206, conveying the sheet metal part which is finished in spraying to the next process for treatment, and placing the sheet metal part which is not finished in spraying to an abnormal identification area for reworking treatment.
And placing the sheet metal part which is not sprayed to the abnormal mark area for reworking treatment, namely carrying out supplementary spraying on the upper surface of the sheet metal part which is not sprayed to ensure that the spraying of the sheet metal part is finished.
Device embodiment
As shown in fig. 3, fig. 3 shows a logic block diagram of a sheet metal part spraying detection and identification device provided by the embodiment of the application, where the device may include:
The first control module is used for controlling the vibration assembly to start vibrating at a preset frequency and utilizing self gravity to move downwards along the upper surface of the sheet metal part until the vibration is finished and then the sheet metal part is stationary;
And the first determining module is used for determining the spraying completion condition of the sheet metal part according to the moving distance of the vibration assembly on the upper surface of the sheet metal part.
Optionally, the first determining module includes:
The second control module is used for controlling the laser transmitter to rotate until the laser receiver senses the light beam emitted by the laser transmitter and then controlling the laser transmitter to stop rotating, and recording the rotation dip angle of the laser transmitter from starting to stopping rotating, wherein the rotation dip angle is positively related to the moving distance of the vibration component on the upper surface of the sheet metal part;
and the second determining module is used for determining the spraying completion condition of the sheet metal part according to the mapping relation between the rotation inclination angle and the friction coefficient of the sheet metal part.
Optionally, the second determining module includes:
The third determining module is used for determining a target friction coefficient of the upper surface of the sheet metal part under the condition that the sheet metal part is sprayed;
A fourth determining module, configured to determine a preset threshold value of the rotation inclination angle corresponding to the target friction coefficient according to a mapping relationship between the rotation inclination angle and the friction coefficient of the sheet metal part;
And the fifth determining module is used for determining that the spraying of the sheet metal part is finished when the rotation inclination angle is larger than a preset threshold value.
Optionally, the first control module includes:
The third control module is used for controlling the motor to start rotating through a scheduling signal so that the vibration assembly starts vibrating at a preset frequency and moves downwards along the upper surface of the sheet metal part by utilizing self gravity until the vibration assembly is stationary after the vibration is finished, and the motor is arranged in the vibration assembly.
Optionally, the first control module includes:
And the adjusting module is used for adjusting the preset frequency of the vibration assembly according to the length of the sheet metal part and the mass of the vibration assembly.
Optionally, the apparatus further comprises:
and the placement module is used for conveying the sheet metal part which is sprayed to the next process for treatment, and placing the sheet metal part which is not sprayed to the abnormal mark area for reworking treatment.
In summary, the sheet metal part spraying detection and identification device provided by the embodiment of the application comprises a fixing module, a first control module and a first determining module, wherein the fixing module is used for obliquely fixing a sheet metal part to be detected in the target area and placing the vibration assembly on the upper surface of the sheet metal part right below the laser emitter, the first control module is used for controlling the vibration assembly to start vibrating at a preset frequency and utilizing self gravity to move downwards along the upper surface of the sheet metal part until the sheet metal part is stationary after the vibration is finished, and the first determining module is used for determining the spraying completion condition of the sheet metal part according to the moving distance of the vibration assembly on the upper surface of the sheet metal part. From this, according to the vibration subassembly in the travel distance of sheet metal component's upper surface, confirm the spraying completion condition of sheet metal component, realized independently discernment air conditioner sheet metal component whether accomplish the spraying, improve mill production efficiency, reduce maintenance cost.
The embodiment of the application also provides a readable storage medium, wherein the readable storage medium is stored with a program or an instruction, and the program or the instruction realizes each process of the sheet metal part spraying detection identification method embodiment when being executed by a processor, and can achieve the same technical effect, so that repetition is avoided and redundant description is omitted.
It should be noted that, in this document, 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 one does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises the element. Furthermore, it should be noted that the scope of the methods and apparatus in the embodiments of the present application is not limited to performing the functions in the order shown or discussed, but may also include performing the functions in a substantially simultaneous manner or in an opposite order depending on the functions involved, e.g., the described methods may be performed in an order different from that described, and various steps may be added, omitted, or combined. Additionally, features described with reference to certain examples may be combined in other examples.
From the above description of the embodiments, it will be clear to those skilled in the art that the above-described embodiment method may be implemented by means of software plus a necessary general hardware platform, but of course may also be implemented by means of hardware, but in many cases the former is a preferred embodiment. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the related art in the form of a computer software product stored in a storage medium (such as ROM/RAM, magnetic disk, optical disk), including several instructions for causing a terminal (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method according to the embodiments of the present application.
The embodiments of the present application have been described above with reference to the accompanying drawings, but the present application is not limited to the above-described embodiments, which are merely illustrative and not restrictive, and many forms may be made by those having ordinary skill in the art without departing from the spirit of the present application and the scope of the claims, which are to be protected by the present application.