Polishing process for door plate of control cabinet

Abstract

The invention discloses a polishing process for a door plate of a control cabinet. The polishing process comprises the steps of abrasive paper mounting, parameter setting, workpiece checking and fixing, polishing track setting, polishing, cleaning and detecting. The grinding device has the advantages that the movement track is set for the grinding mechanical arm, the grinding machine arranged at the end of the grinding mechanical arm is used for grinding operation, physical strength expenditure of grinding operators is reduced, labor intensity is lowered, rough grinding, accurate grinding and polishing can be completed at a time through the grinding mechanical arm, working efficiency is improved, frequent equipment replacement is avoided, and production cost is reduced. In addition, a polishing worker does not need to hold a polishing machine to directly contact with a workpiece for polishing, suction of polishing dust is reduced, the probability of occupational diseases is reduced, standardization of polishing operation is guaranteed through a fixing tool, consistency of surface treatment of the door sheet is guaranteed, the whole process guarantees high efficiency, safety and standardization of production, product quality is improved, and the production cost is reduced. The cost is reduced.

Description

Technical Field

[0001] The invention specifically relates to a control cabinet door panel polishing process. Background Art

[0002] The control cabinet door panel is the main component of the existing control cabinet. The control cabinet door is generally made of bent and welded iron plates. In order to increase the service life and prevent the control cabinet door from rusting, protective paint will be sprayed on the surface of the control cabinet door. In order to ensure the aesthetics and painting effect, the control cabinet door needs to be polished before painting.

[0003] In the traditional control cabinet door panel polishing process, manual sanding or simple mechanical polishing is usually adopted. These methods have a high degree of manual participation, and because they are all manually controlled polishing, the polishing quality of the product depends on manual experience during the manual polishing process. There are problems such as low polishing efficiency, unstable quality, and large material loss. In addition, the metal dust produced by polishing is easily inhaled by workers and causes occupational diseases. Therefore, an efficient, stable, and low-loss polishing process is needed to meet the needs.

[0004] There are also some grinding devices with automatic grinding functions in the prior art, but they are often expensive, complex in structure, and have high maintenance costs. Summary of the invention

[0005] The technical problem to be solved by the present invention is the problem of high labor cost, low production efficiency and unstable quality in the existing control cabinet door panel grinding process mentioned in the background technology.

[0006] In view of the above technical problems, a control cabinet door panel grinding process is proposed; it is realized by the following technical scheme: a control cabinet door panel grinding process, comprising the following steps: S1. Sandpaper installation: Install sandpaper on the sander in the sanding robot arm; S2. Grinding parameter setting: setting the operating parameters of the grinding robot arm; S3, inspection of the workpiece to be polished: check whether the workpiece to be polished meets the standards, and if it meets the standards, proceed to step S4; S4. Fix the workpiece to be polished: fix the control cabinet door to be polished on the polishing platform using the positioning tool; S5. Grinding trajectory setting: setting the grinding motion trajectory of the grinding robot arm and the number of grinding times; S6, grinding: start the equipment, and the grinder on the grinding robot arm grinds the control cabinet door to be polished according to the set parameters; S7. Cleaning: After polishing, remove the polished control cabinet door and clean the dust on the surface of the control cabinet door; S8, Inspection: Grinding result inspection, if the inspection result meets the grinding standard, it is a qualified product, if the inspection result does not meet the standard, it is a failed product, failed products will be repaired or S3-S8 will be re-executed.

[0007] Preferably, in step S1, the grinder includes a coarse grinding machine, a first fine grinding machine and a second fine grinding machine. The coarse grinding machine, the first fine grinding machine and the second fine grinding machine are respectively connected to a grinder mounting frame arranged on a grinding robot arm. The arrangement of multiple grinders improves the grinding capacity. Different grinding effects can be achieved by replacing different grinders, which improves the grinding efficiency and reduces the grinding cost.

[0008] Preferably, the rough grinding machine is provided with a louver wheel polishing piece, and the first fine grinding machine and the second fine grinding machine are detachably provided with sandpaper. The roughness of the sandpaper on the first fine grinding machine is greater than the roughness of the sandpaper on the second fine grinding machine, and the roughness of the louver wheel polishing piece is greater than the roughness of the sandpaper on the first fine grinding machine. Such an arrangement makes it possible to achieve different grinding effects by replacing different grinders, thereby reducing the use cost and improving the grinding efficiency.

[0009] Preferably, the sandpaper on the first fine grinding machine and the second fine grinding machine is fixed on the first fine grinding machine and the second fine grinding machine by Velcro, and such an arrangement facilitates the replacement of the sandpaper and is easy to use.

[0010] Preferably, the grinding parameter setting in step S2 includes dynamic density, automatic speed, manual linear speed, manual angular speed and joint speed limit. The dynamic density is 60,000 pulses, the automatic speed is 30%, the manual linear speed is 2m / s, the manual angular speed is 20° / s, and the joint speed limit is 20° / s. Such a setting ensures the grinding stability while also improving the grinding speed and improving production efficiency.

[0011] Preferably, in step S5, the grinding trajectory setting includes fixed-point grinding, rough grinding and fine grinding of the weld point, wherein the fixed-point grinding of the weld point only grinds the weld point, and the grinding trajectories of rough grinding and fine grinding include the entire surface and side of the weld point. Such a setting ensures the accuracy of grinding and prevents over-grinding.

[0012] Preferably, in step S5, the grinding track is set to clockwise grinding, and two circles are sequentially ground. Such a setting improves the grinding quality and prevents the grinding direction from changing and reducing the grinding quality.

[0013] Preferably, the grinding process of step S6 includes welding spot grinding, rough grinding, fine grinding and polishing. The welding spot grinding and rough grinding are performed by a rough grinding machine, the fine grinding is performed by a first fine grinding machine, and the polishing is performed by a second fine grinding machine. Such a setting enables one grinding robot arm to complete the welding spot grinding, rough grinding, fine grinding and polishing processes, thereby improving the grinding efficiency.

[0014] Preferably, in step S4, a plurality of positioning fixtures are arranged on the polishing platform. Such an arrangement enables the control cabinet doors on a plurality of positioning fixtures to be polished at the same time, thereby avoiding frequent adjustment of the polishing robot arm and improving the polishing efficiency.

[0015] Compared with the prior art, the present invention has the following beneficial effects: The technical solution of the present invention sets a motion trajectory for the grinding robot arm and uses the grinder arranged at the end of the grinding robot arm to perform grinding operations, thereby reducing the physical expenditure of the grinding workers and reducing labor intensity. The grinding robot arm can complete rough grinding, fine grinding and polishing at one time, thereby improving work efficiency and avoiding frequent equipment replacement. In addition, the grinding workers do not need to directly contact the workpiece with a handheld grinder for grinding, which reduces the inhalation of grinding dust and the chance of occupational diseases. In addition, the standardization of the grinding operation is guaranteed by fixing the tooling, and the consistency of the surface treatment of the door panels is guaranteed. The overall process ensures the efficiency, safety and standardization of production, improves product quality and reduces costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional schematic diagram of the grinding equipment of the present invention; Figure 2 This is a three-dimensional schematic diagram of the grinding machine mounting frame; Figure 3 This is a three-dimensional schematic diagram of the grinding platform; Figure 4 Polishing flow chart for the present invention; Explanation of the accompanying drawings: 1-grinding robot arm, 11-grinding machine mounting frame, 12-rough grinding machine, 13-first fine grinding machine, 14-second fine grinding machine, 2-grinding platform, 21-positioning tooling, 3-control cabinet door. DETAILED DESCRIPTION

[0017] The following will be combined with the attached embodiment of the present invention Figure 1-4 , the technical solutions in the embodiments of the present invention are described in detail. Example

[0018] like Figure 1As shown, a control cabinet door panel polishing process is shown, the control cabinet door 3 is placed on the polishing platform 2, and in order to improve the stability of fixation, the control cabinet door 3 is fixed on the polishing platform 2 by a positioning tool 21, and a polishing robot arm 1 is fixed on one side of the polishing platform 2, and a grinder is arranged on the polishing robot arm 1. By setting the polishing parameters and motion trajectory of the polishing robot arm 1 and the grinder, automatic polishing of the surface and side of the control cabinet door 3 can be achieved.

[0019] The main function of the grinding robot arm 1 is to serve as a carrier for the grinding machine installation. The grinding robot arm 1 is fixed to the installation surface by screws. At the same time, the grinding robot arm 1 can also drive the adjustment of the position of the grinding machine to realize the grinding of the surface and side of the control cabinet door 3.

[0020] The main function of the polishing platform 2 is to place the control cabinet door 3. The polishing platform 2 is fixed to the mounting surface by screws, which facilitates the polishing robot arm 1 to polish the control cabinet door 3. In order to prevent the control cabinet door 3 from moving on the polishing platform 2, a positioning tool 21 is provided on the polishing platform 2, and the control cabinet door 3 can be fixed on the polishing platform 2 by the positioning tool 21.

[0021] like Figure 1 and 2 As shown, the polishing robot arm 1 is an existing six-axis robot, and the moving trajectory and speed of the polishing robot arm 1 can be controlled by an operating platform.

[0022] A grinder mounting frame 11 is fixed to the front end of the grinding robot arm 1 by means of screws, and the grinder is connected to the grinding robot arm 1 via the grinder mounting frame 11 .

[0023] The grinder mounting frame 11 is a mounting seat with a "U"-shaped cross section. The grinder mounting frame 11 is connected to one end of the grinding robot arm 1 with screws. The main function of the grinder mounting frame 11 is to install the grinder.

[0024] A plurality of grinders are arranged on the grinder mounting frame 11 . In the present embodiment, three grinders are preferably arranged, namely a rough grinding grinder 12 , a first fine grinding grinder 13 and a second fine grinding grinder 14 .

[0025] To facilitate the installation of the grinder, threaded holes are opened on the left and right opposite side panels of the grinder mounting frame 11, and the first fine grinding machine 13 and the second fine grinding machine 14 are fixed to the side panels of the grinder mounting frame 11 by screws, and the grinding heads on the first fine grinding machine 13 and the second fine grinding machine 14 face outwards. The rotation of the grinder mounting frame 11 can realize the switching of the first fine grinding machine 13 and the second fine grinding machine 14.

[0026] In order to facilitate the fixation of the rough grinding machine 12, a base plate is welded under the side plate on which the first fine grinding machine 13 and the second fine grinding machine 14 are installed on the grinder mounting frame 11. The rough grinding machine 12 is fixed to the base plate by screws, and the grinding head on the rough grinding machine 12 faces outward. The rotation of the grinding robot arm 1 can drive the grinder mounting frame 11 to rotate, thereby realizing the switching of the first fine grinding machine 13, the second fine grinding machine 14 and the rough grinding machine 12.

[0027] The rough grinding machine 12 is preferably a pneumatically driven angle grinder, and a flap wheel polishing disc is fixed to the rough grinding machine 12 by screws.

[0028] The first fine grinding machine 13 and the second fine grinding machine 14 are preferably pneumatically driven rotary disc grinders, and the sandpaper is fixed on the rotary disc of the grinder by Velcro, so that the sandpaper is easy to replace.

[0029] Definition: In this embodiment, the mounting surface is taken as a reference, the direction from the mounting surface to the grinding robot arm 1 is upward, and the direction from the grinding robot arm 1 to the mounting surface is downward.

[0030] like Figure 1 and 3 As shown, the grinding platform 2 is a metal frame formed by metal welding. The main function of the grinding platform 2 is to fix the control cabinet door 3 so that the grinding robot arm 1 can grind the control cabinet door 3 using a grinder.

[0031] In order to fix the position of the control cabinet door 3, a positioning tool 21 is installed on the polishing platform 2. The positioning tool 21 is made of four angle steels with an "L"-shaped cross-section. The control cabinet door 3 can be stuck in the angle steel. The positioning tool 21 can be used to fix the position of the control cabinet door 3.

[0032] In order to improve versatility and facilitate the adjustment of the position of the positioning tool 21, a plurality of oblong holes are opened on the polishing platform 2. The positioning tool 21 is fixed to the polishing platform 2 by means of screws and oblong holes. The position of the positioning tool 21 can be adjusted by means of the polishing platform 2 and the oblong holes, and the versatility is strong.

[0033] In order to improve the grinding efficiency, multiple groups of positioning tools 21 are fixed on the grinding platform 2 . In this embodiment, two groups are preferably arranged, and the two groups of positioning tools 21 are distributed at intervals on the grinding platform 2 .

[0034] like Figure 1 and 4 As shown, the specific process of the control cabinet door panel grinding process includes the following steps: S1. Sandpaper installation: Install sandpaper on the sanders in the sanding robot arm 1, wherein the rough sander 12 is preferably installed with a 60-mesh flap wheel polishing sheet, the first fine sander 13 is installed with a 120-mesh 4-inch air sandpaper, and the second fine sander 14 is installed with a 240-mesh 4-inch air sandpaper; S2, grinding parameter setting: using the operating platform on the grinding robot arm 1 to set the operating parameters of the grinding robot arm 1 according to the plate thickness of the control cabinet door 3, wherein the grinding parameter setting includes dynamic density difference, automatic speed, manual linear speed, manual angular speed and joint speed limit. This embodiment takes a 1.5 mm thick plate as an example, wherein the dynamic density difference is 60,000 pulses, the automatic speed is 30%, the manual linear speed is 2 m / s, the manual angular speed is 20° / s, and the joint speed limit is 20° / s; S3, inspection of the workpiece to be polished: manually inspect the surface of the workpiece to be polished to see if there are pits or obvious defects exceeding the error value, and proceed to step S4 after the inspection is correct; S4. Fixing the workpiece to be polished: Use screws to adjust the position of the positioning fixture 21, and fix the control cabinet door 3 to be polished on the polishing platform 2 using the positioning fixture 21. Generally, the control cabinet doors 3 of the same batch have the same specifications. Under normal conditions, the positioning fixture 21 only needs to be adjusted once, and the positioning fixture 21 needs to be checked regularly for looseness; S5, grinding trajectory setting: setting the grinding trajectory of the grinding robot arm 1, using the operating platform on the grinding robot arm 1 to control the grinding robot arm 1 to move along the placed control cabinet door 3, the purpose of which is to collect the grinding path and set the grinding trajectory. The path collection includes welding point collection. The main purpose of welding point collection is to grind the welding points at the beginning, so that the welding points are pre-grinded to the same plane as the control cabinet door 3 before the first rough grinding, and then set the grinding times to two times, that is, the entire control cabinet door 3 will be polished twice during grinding; S6, grinding: starting the equipment, the grinding machine on the grinding robot arm 1 grinds the control cabinet door 3 to be polished according to the set parameters, and the grinding surface includes welding point grinding, surface grinding and side grinding; S7, cleaning: after polishing is completed, remove the polished control cabinet door 3, and use an air gun and a cleaning cloth to clean the dust on the surface of the control cabinet door 3; S8. Inspection: Inspection of grinding results. If the inspection results meet the grinding standards, the product is qualified. If the inspection results do not meet the standards, the product is unqualified. Unqualified products must be repaired or S3-S8 must be re-executed. Inspection includes visual inspection, manual inspection and machine inspection. Each workpiece after grinding needs to pass visual inspection. Manual inspection and machine inspection are random sampling. The number of manual inspections is greater than the number of machine inspections.

[0035] Regarding the setting of the grinding trajectory in step S5, the grinding trajectory setting includes the preset welding point position, the preset surface trajectory and the preset side trajectory, wherein the preset reserve amount of the welding point position in height is 5mm, that is, the distance between the highest point of the preset welding point and the surface of the control cabinet door 3 is 5mm, and when grinding the welding point, the welding point is ground downward from 5mm away from the surface of the control cabinet door 3, and the downward grinding distance is 5mm, so that the welding point is flush with the surface of the control cabinet door 3.

[0036] The surface trajectory is preset to be the upper surface of the control cabinet door 3 including the welding point, and the side trajectory is the four sides including the welding point. Regarding the collection of the surface trajectory, the operating platform on the grinding robot arm 1 can be used to control the grinding robot arm 1 to move along the entire control cabinet door 3. The operating platform on the grinding robot arm 1 automatically generates a trajectory map, and the grinding robot arm 1 moves along the trajectory map. The method of automatically generating a plane by multi-point collection can also be used. This embodiment preferably adopts the first method.

[0037] The grinding in step 6 includes four steps: welding point grinding, rough grinding, fine grinding and polishing. The specific steps are first welding point grinding, then rough grinding, second fine grinding and finally polishing. The welding point grinding and rough grinding are completed by rough grinding machine 12, fine grinding is completed by first fine grinding machine 13, and polishing is completed by second fine grinding machine 14. In order to prevent grinding and ensure the grinding effect, each grinding of the three grinders is clockwise.

[0038] Regarding the switching of the rough grinding machine 12, the first fine grinding machine 13 and the second fine grinding machine 14, when the grinding is completed and needs to be switched, the grinding robot arm 1 is lifted up by 30 cm to ensure that the grinding head does not accidentally touch the workpiece, and then the grinding machine mounting frame 11 is rotated 90° accordingly to complete the switching of the grinding machine.

[0039] The visual inspection in step S8 is to conduct a comprehensive inspection of the control cabinet door 3 under sufficient light to check whether there are scratches, pits, uneven polishing and other defects on the surface of the control cabinet door 3, and touch the surface with hands to roughly check whether its smoothness and texture meet the requirements.

[0040] The manual inspection in step S8 is to use a dial indicator to detect the error on the surface and further detect the polishing effect.

[0041] The machine detection in step S8 is performed by using existing equipment and based on the optical interferometry method.

[0042] Advantages of the technical solution: In the present invention, by setting the motion trajectory of the grinding robot arm 1 and using the grinder arranged at the end of the grinding robot arm 1 to perform grinding operations, the physical expenditure of the grinding workers is reduced and the labor intensity is reduced. The grinding robot arm 1 can complete rough grinding, fine grinding and polishing at one time, thereby improving work efficiency and avoiding frequent equipment replacement. In addition, the grinding workers do not need to directly contact the workpiece with a handheld grinder for grinding, thereby reducing the inhalation of grinding dust and the probability of occupational diseases. In addition, the standardization of the grinding operation is guaranteed by fixing the tooling, and the consistency of the surface treatment of the control cabinet door 3 is guaranteed. The overall process ensures the efficiency, safety and standardization of production, improves product quality and reduces costs.

[0043] The above embodiments are only for illustrating the technical idea of ​​the present invention, and cannot be used to limit the protection scope of the present invention. Any changes made on the basis of the technical solution in accordance with the technical idea proposed by the present invention shall fall within the protection scope of the present invention.

Claims

1. A control cabinet door panel polishing process, characterized in that: The steps include: S1. Installing sandpaper: Installing sandpaper on the sander in the sanding robot arm (1); S2, grinding parameter setting: setting the operating parameters of the grinding robot arm (1); S3, inspection of the workpiece to be polished: check whether the workpiece to be polished meets the standards, and if it meets the standards, proceed to step S4; S4, fixing the workpiece to be polished: fixing the control cabinet door (3) to be polished on the polishing platform (2) using a positioning tool (21); S5, grinding trajectory setting: setting the grinding motion trajectory of the grinding robot arm (1) and the number of grinding times; S6, grinding: starting the equipment, and the grinding machine on the grinding robot arm (1) grinds the control cabinet door (3) to be polished according to the set parameters; S7, cleaning: after polishing is completed, remove the polished control cabinet door (3) and clean the dust on the surface of the control cabinet door (3); S8, Inspection: Grinding result inspection, if the inspection result meets the grinding standard, it is a qualified product, if the inspection result does not meet the standard, it is a failed product, failed products will be repaired or S3-S8 will be re-executed.

2. A control cabinet door panel polishing process according to claim 1, characterized in that: In step S1, the grinding machine comprises a rough grinding machine (12), a first fine grinding machine (13) and a second fine grinding machine (14), and the rough grinding machine (12), the first fine grinding machine (13) and the second fine grinding machine (14) are respectively connected to a grinding machine mounting frame (11) arranged on a grinding robot arm (1).

3. A control cabinet door panel polishing process according to claim 2, characterized in that: The rough grinding machine (12) is provided with a louver wheel polishing sheet, and the first fine grinding machine (13) and the second fine grinding machine (14) are detachably provided with sandpaper, the roughness of the sandpaper on the first fine grinding machine (13) is greater than the roughness of the sandpaper on the second fine grinding machine (14), and the roughness of the louver wheel polishing sheet is greater than the roughness of the sandpaper on the first fine grinding machine (13).

4. A control cabinet door panel polishing process according to claim 3, characterized in that: The sandpaper on the first fine grinding machine (13) and the second fine grinding machine (14) is fixed to the first fine grinding machine (13) and the second fine grinding machine (14) by Velcro.

5. The control cabinet door panel polishing process according to claim 1 is characterized in that: The grinding parameter settings in step S2 include dynamic density, automatic speed, manual linear speed, manual angular speed and joint speed limit. The dynamic density is 60,000 pulses, the automatic speed is 30%, the manual linear speed is 2 m / s, the manual angular speed is 20° / s, and the joint speed limit is 20° / s.

6. A control cabinet door panel polishing process according to claim 1, characterized in that: In step S5, the grinding track setting includes spot grinding, rough grinding and fine grinding of the weld, wherein the spot grinding of the weld only grinds the weld, and the rough grinding and fine grinding tracks include the entire surface and side of the weld.

7. A control cabinet door panel polishing process according to claim 1, characterized in that: In step S5, the grinding track is set to clockwise grinding, and two circles are grinded in sequence.

8. The control cabinet door panel polishing process according to claim 1, characterized in that: The grinding process of step S6 includes welding point grinding, rough grinding, fine grinding and polishing. The welding point grinding and rough grinding are performed by a rough grinding machine (12), the fine grinding is performed by a first fine grinding machine (13), and the polishing is performed by a second fine grinding machine (14).

9. A control cabinet door panel polishing process according to claim 1, characterized in that: In step S4, a plurality of positioning tools (21) are arranged on the polishing platform (2).

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