Automobile plate polishing machining equipment

Abstract

The invention relates to the technical field of automobile plate grinding and machining, and particularly discloses automobile plate grinding and machining equipment which comprises a workbench, an operating platform, a driving mechanism, a grinding mechanism, a grinding mechanism and a grinding mechanism, wherein the operating platform is used for automobile plate grinding and machining and is provided with a man-made standing operating space and can fix automobile plates; the polishing machining assembly is used for rotationally polishing specific positions of the automobile plate, the polishing positions comprise the bottom face, the side face and the chamfer face of the specific positions, the polishing machining assembly adopts equal-size same insertion type polishing, and the surface roughness of polishing is precisely controlled through pressure adjustment; and the moving assembly is arranged on the workbench and used for polishing. According to the device, the problem that polishing precision with the high requirement cannot be treated through traditional machine polishing is solved.

Description

Technical Field

[0001] This application relates to the field of automotive sheet metal grinding and processing technology, and specifically discloses an automotive sheet metal grinding and processing equipment. Background Technology

[0002] Automotive sheet metal is the main basic material for manufacturing car bodies, chassis and parts. Its performance directly affects the safety, lightweight level and production cost of the vehicle. The essence of automotive sheet metal is: a thin metal material (usually 0.5~3mm thick) designed specifically for the automotive industry. It must meet the comprehensive requirements of stamping formability, weldability, corrosion resistance and mechanical properties. Its key role is: accounting for 60%-70% of the total vehicle weight, determining the body rigidity, collision safety and fuel economy. Automotive sheet metal requires sanding during production and use: First, in the manufacturing process, grinding is needed to remove burrs and flash generated by stamping / cutting. Second, grinding improves the adhesion of the paint surface. Third, grinding calibrates the form and position tolerances. Then, during the usage phase, the collision repair or renovation after the collision is achieved through sanding. This not only removes the old paint layer and rust, but also smoothly fills the putty area. Sanding is a crucial step in improving paint adhesion, as it affects not only the appearance but also the overall quality. When improving paint adhesion through sanding, there are strict requirements on the sanding depth, and a precise balance must be achieved between "effective roughness" and "substrate safety threshold". The micro-anchor structure produced by sanding creates a mechanical interlock between the paint film and the substrate. Studies have shown that when the surface roughness Ra reaches 1.5-3.0 μm, the adhesion can be increased to 2-3 times that of the unsanded state. This also leads to several contradictions: 1. Excessive grinding can cause: 2. Weakening of the substrate cross-section (especially high-strength steel); 3. Formation of a work-hardened layer, reducing ductility; 4. Damage to the original anti-corrosion layer (such as the galvanized layer); Therefore, as suppliers of automotive sheet metal, automakers have very high requirements for them, demanding strict adherence to the surface roughness Ra of the sheet metal, and different sheet metals require different surface roughness Ra: Regarding existing technologies: Currently, there are intelligent polishing systems: for example, ANUC robots equipped with AE sensors can adjust pressure in real time (accuracy ±0.1N), improving polishing efficiency by 40% and achieving a yield rate of 99.6%. Although manual polishing is at a disadvantage in terms of efficiency and standardization compared to machine polishing, it still has irreplaceable core advantages. Reference manual attached Figure 1 , attached Figure 1For the concealed door handle area of ​​a certain car manufacturer, an inner rounded corner transition of R0.3mm is required. It is necessary to meet the requirement of an inner rounded corner transition of R0.3mm and a surface roughness Ra of 1.5-3.0μm. Currently, no grinding machine on the market can achieve this, and manual grinding must be used. In order to ensure the yield rate of this product, the present invention provides an automotive sheet grinding and processing equipment to solve the above problems. Summary of the Invention

[0003] The purpose of this invention is to solve the problem that traditional machine grinding cannot handle grinding precision requirements.

[0004] To achieve the above objectives, the present invention provides the following basic solution: An automotive sheet metal sanding and processing equipment, comprising: Workbench: An operating platform used for grinding and processing automotive sheet metal, providing space for people to stand and operate while also being able to fix the automotive sheet metal in place; Grinding and processing components: Rotary grinding of specific locations on automotive sheet metal, including the bottom surface, sides, and chamfered surfaces. The grinding and processing components use identical insert grinding tools of the same size, and the surface roughness is precisely controlled by adjusting the pressure. Moving component: Set on the worktable, the grinding component moves up, down, left, and right to locate a specific position on the automotive sheet metal.

[0005] Furthermore, the moving component includes a connecting frame symmetrically fixed to the worktable, a slide groove on the connecting frame, a sliding frame slidably connected in the slide groove, and a cylinder mounted on the sliding frame. The sliding frame includes a sliding rod and a mounting platform, which are integrally formed. The cylinder is mounted on the mounting platform, and the grinding component is connected to the extended end of the cylinder.

[0006] Furthermore, the sliding rod includes an optical axis and a threaded shaft. The mounting platform has a moving groove. The optical axis is slidably connected to the moving groove in the mounting platform. Both ends of the optical axis are coaxially connected to the threaded shaft, and the threaded shaft slides in the sliding groove.

[0007] Furthermore, it also includes a locking assembly, which includes a limiting block fixed at the connection between the optical axis and the threaded shaft. The size of the limiting block is larger than the size of the slide groove. A locking nut is threaded onto the threaded shaft. A locking groove is opened on the mounting platform. The locking groove communicates with the moving groove. A locking screw is connected in the locking groove. The locking screw passes through the moving groove and contacts the optical axis.

[0008] Furthermore, the workbench includes a housing, several controllers disposed within the housing, several support columns fixed to the bottom of the housing, and a working surface fixed to the surface of the housing. Several grooves are formed on the working surface, and fixed columns are connected to the grooves. The fixed columns are glued to the automotive sheet metal.

[0009] Furthermore, the grinding assembly includes a housing, a rotary motor built into the housing, an output shaft of the rotary motor located outside the housing, a mounting groove on the output shaft of the rotary motor, and a precision grinding component detachably connected to the mounting groove.

[0010] Furthermore, the precision polishing component includes a connecting block magnetically connected to the mounting slot and a polishing block fixedly connected to the connecting block. The polishing block is a hollow block, and the outer surface of the polishing block is a polishing surface.

[0011] Furthermore, the polishing block includes a bottom polishing block, a side polishing block, and a top block. The bottom polishing block and the side polishing block are integrally formed, and the top block is detachably connected to the side polishing block. The top block is integrally formed with a connecting block. A first plate is fixedly connected to the side of the bottom polishing block, and a second plate is fixedly connected to the side of the side polishing block. A cavity is provided between the first plate and the bottom polishing block, and between the second plate and the side polishing block. A first airbag and a second airbag are provided in the corresponding cavity. The expansion surfaces of the first airbag and the second airbag face the bottom polishing block and the side polishing block, respectively.

[0012] Furthermore, it also includes a gas reservoir disposed within the cavity block, the gas reservoir being controlled by a controller, and further includes a first wire and a second wire, the first wire passing through a first plate and connected to the gas reservoir, and the second wire passing through a second plate and connected to the gas reservoir.

[0013] Furthermore, the top block and the side grinding block are detachably connected by a hidden pin. A slot is opened at the end of the side grinding block, and a chamfering cutter is installed in the slot. The chamfering cutter is used to grind the chamfered surface, and the pressure applied to the side grinding block acts on the chamfering cutter.

[0014] The principle and effect of this solution are as follows: 1. Compared with the prior art, the core of this application lies in the grinding and processing component: rotating grinding of specific positions of automotive sheet metal, including the bottom surface, side surface and chamfer surface of the specific position, the grinding and processing component adopts the same size insertion grinding, and the surface roughness of the grinding is precisely controlled by pressure adjustment; the feature of the same size insertion grinding is that the grinding block is inserted into the grinding position of the same size, and pressure is applied through the bottom surface, side surface and chamfer surface, and the surface roughness Ra of the grinding position is precisely controlled by pressure. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1 This illustration shows a schematic diagram of the concealed door handle panel area in an automotive sheet metal grinding and processing equipment according to an embodiment of this application; Figure 2 This paper shows a schematic diagram of the structure of an automotive sheet metal grinding and processing equipment according to an embodiment of this application; Figure 3 This illustration shows a structural schematic diagram of a grinding component in an automotive sheet metal grinding equipment according to an embodiment of this application; Figure 4 This paper shows a front view schematic diagram of a grinding component in an automotive sheet metal grinding equipment according to an embodiment of this application; Figure 5 A schematic diagram of the structure of a grinding block in an automotive sheet metal grinding equipment according to an embodiment of this application is shown. Detailed Implementation

[0017] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0018] The reference numerals in the accompanying drawings of the instruction manual include: 1. Box body; 2. Support column; 3. Working surface; 4. Groove; 5. Connecting frame; 6. Slide groove; 7. Mounting platform; 8. Locking groove; 9. Cylinder; 10. Housing; 11. Optical shaft; 12. Threaded shaft; 13. Mounting groove; 14. Connecting block; 15. Grinding block; 15. Bottom grinding block; 1501. First airbag; 1502. First plate; 1503. First guide wire; 1504. Side grinding block; 1505. Second airbag; 1506. Second plate; 1507. Hidden stake; 1508. Chamfering tool; 1509. Second guide wire; 1510. Top block; 1511. Gas storage device; 1512. Cavity; 1513.

[0019] Implementation, for example Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown: An automotive sheet metal sanding and processing equipment, comprising: Workbench: An operating platform used for grinding and processing automotive sheet metal, providing space for people to stand and operate while also being able to fix the automotive sheet metal in place; Specifically: The workbench includes a housing 1, several controllers disposed inside the housing 1, several support columns 2 fixed to the bottom of the housing 1, and a working surface 3 fixed to the surface of the housing 1. Several grooves 4 are formed on the working surface 3, and fixed columns are connected in the grooves 4. The fixed columns are glued to the automotive sheet metal. The height of the box 1 is set so that people can stand and operate it. Then, find the plate that needs to be sanded and processed, select an appropriate number of fixing posts, and then glue the car plate through the fixing posts so that the sanding position on the car plate faces upward. Grinding and processing components: Rotary grinding of specific locations on automotive sheet metal, including the bottom surface, sides, and chamfered surfaces. The grinding and processing components use identical insert grinding tools of the same size, and the surface roughness is precisely controlled by adjusting the pressure. Moving component: Set on the worktable, the grinding component moves up, down, left, and right to locate a specific position on the automotive sheet metal.

[0020] The moving assembly includes a connecting frame 5 symmetrically fixed to the worktable, a slide groove 6 on the connecting frame 5, a sliding frame slidably connected in the slide groove 6, and a cylinder 9 mounted on the sliding frame. The sliding frame includes a sliding rod and a mounting platform 7, which are integrally formed. The cylinder 9 is mounted on the mounting platform 7, and the grinding assembly is connected to the extended end of the cylinder 9. The sliding rod includes a smooth shaft 11 and a threaded shaft 12. The mounting platform 7 has a moving groove, and the smooth shaft 11 is slidably connected to the moving groove in the mounting platform 7. The two ends of the optical axis 11 are coaxially connected to the threaded shaft 12. The threaded shaft 12 slides in the slide groove 6. The system also includes a locking assembly. The locking assembly includes a limiting block fixed at the connection between the optical axis 11 and the threaded shaft 12. The size of the limiting block is larger than the size of the slide groove 6. A locking nut is threaded onto the threaded shaft 12. A locking groove 8 is opened on the mounting platform 7. The locking groove 8 communicates with the moving groove. A locking screw is connected in the locking groove 8. The locking screw passes through the moving groove and contacts the optical axis 11.

[0021] Specifically: the sliding frame slides in the slide groove 6, and the threaded shaft 12 slides in the slide groove 6, thereby causing the grinding component to slide in the direction of the slide groove 6 and move in the direction of the sliding rod. The extension and retraction of the cylinder 9 causes the grinding component to move in the vertical direction. Finding the grinding position: The sliding bracket slides in the slide groove 6, and the threaded shaft 12 slides within the slide groove 6, thereby causing the grinding component to slide in the direction of the slide groove 6 and move in the direction of the sliding rod, so that the grinding component finds the grinding position. Then, the cylinder 9 is activated, so that the grinding blocks 15 of the same size can be inserted for grinding. After the position of the grinding component is determined, the locking component is used to lock the grinding component. Specifically as follows: A locking nut is threaded onto the threaded shaft 12, preventing the sliding rod from sliding on the slide groove 6. Then, a locking screw is connected in the locking groove 8, preventing the mounting table 7 from moving on the optical shaft 11, thereby fixing the position of the grinding and processing component. The grinding assembly includes a housing 10, a rotary motor built into the housing 10, an output shaft of the rotary motor located outside the housing 10, a mounting groove 13 on the output shaft of the rotary motor, and a precision grinding component detachably connected to the mounting groove 13.

[0022] The precision grinding component is rotated by a rotating motor. The rotation of the precision grinding component performs grinding processing on the grinding position. The precision grinding component includes a connecting block 14 magnetically connected to the mounting groove 13 and a grinding block 15 fixedly connected to the connecting block 14. The grinding block 15 is a hollow block 1513, that is, the inside of the grinding block 15 is a hollow cavity 1513, and the outer surface of the grinding block 15 is the grinding surface.

[0023] Specifically: The polishing block 15 includes a bottom polishing block 1501, a side polishing block 1505, and a top block 1511. The bottom polishing block 1501 and the side polishing block 1505 are integrally formed, and the top block 1511 is detachably connected to the side polishing block 1505. The top block 1511 is integrally formed with the connecting block 14. A first plate 1503 is fixedly connected to the side near the bottom polishing block 1501, and a second plate 1507 is fixedly connected to the side near the side polishing block 1505. Cavities are provided between the first plate 1503 and the bottom polishing block 1501, and between the second plate 1507 and the side polishing block 1505. The corresponding cavity is provided with a first airbag 1502 and a second airbag 1506. The expansion surfaces of the first airbag 1502 and the second airbag 1506 face the bottom grinding block 1501 and the side grinding block 1505, respectively. It also includes a gas storage device 1512 disposed in the cavity 1513 block. The gas storage device 1512 is controlled by a controller. It also includes a first wire 1504 and a second wire 1510. The first wire 1504 passes through the first plate 1503 and is connected to the gas storage device 1512. The second wire 1510 passes through the second plate 1507 and is connected to the gas storage device 1512.

[0024] Specifically: Gas transmission is achieved through gas storage device 1512 and first wire 1504 and second wire 1510, causing first airbag 1502 and second airbag 1506 to inflate. Since the inflated surfaces of first airbag 1502 and second airbag 1506 face the bottom grinding block 1501 and the side grinding block 1505 respectively, the pressure on the bottom grinding block 1501 and the side grinding block 1505 increases. The increased pressure allows for precise control of the surface roughness Ra at the grinding position. The specific steps are as follows: Assuming the required surface roughness Ra of the bottom and side of this grinding position is 1.5 μm, 0.1 N is applied through the gas reservoir 1512, and then the cylinder 9 is reset. The surface roughness Ra of the bottom and side at this time is tested by the surface roughness detection instrument. By gradually applying pressure, the required surface roughness Ra of the bottom and side is 1.5 μm. about Figure 1 For the rounded corner positions, this application provides a chamfering tool 1509: Specifically: The top block 1511 and the side grinding block 1505 are detachably connected by a concealed pin. The concealed pin is mainly used to detachably connect the top block 1511 and the side grinding block 1505 for replacing the gas reservoir 1512. A slot is provided at the end of the side grinding block 1505, and a chamfering tool 1509 is installed in the slot. The chamfering tool 1509 can be of any size. Figure 1 If the required radius is R0.3mm, then the chamfering cutter 1509 is selected accordingly. The chamfering cutter 1509 is used to grind the chamfered surface. The pressure applied to the side grinding block 1505 acts on the chamfering cutter 1509. Specifically, since the end of the side grinding block 1505 has a groove, the side grinding block 1505 will be subjected to the pressure of the second airbag 1506. The pressure will be transmitted to the chamfering cutter 1509, and the chamfering cutter 1509 can naturally apply pressure to the chamfered surface, thereby performing precise grinding processing on the chamfered surface.

[0025] This device solves the problem that traditional machine grinding cannot handle grinding precision requirements.

[0026] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A grinding and processing equipment for automotive sheet metal, characterized in that, include: Workbench: An operating platform used for grinding and processing automotive sheet metal, providing space for people to stand and operate while also being able to fix the automotive sheet metal in place; Grinding and processing components: Rotary grinding of specific locations on automotive sheet metal, including the bottom surface, sides, and chamfered surfaces. The grinding and processing components use identical insert grinding tools of the same size, and the surface roughness is precisely controlled by adjusting the pressure. Moving component: Set on the worktable, the grinding component moves up, down, left, and right to locate a specific position on the automotive sheet metal.

2. The automotive sheet metal grinding and processing equipment according to claim 1, characterized in that, The moving component includes a connecting frame symmetrically fixed to the worktable, a slide groove on the connecting frame, a sliding frame slidably connected in the slide groove, and a cylinder mounted on the sliding frame. The sliding frame includes a sliding rod and a mounting platform, which are integrally formed. The cylinder is mounted on the mounting platform, and the grinding component is connected to the extended end of the cylinder.

3. The automotive sheet metal grinding and processing equipment according to claim 2, characterized in that, The sliding roller includes an optical axis and a threaded shaft. The mounting platform has a movable groove. The optical axis is slidably connected to the movable groove in the mounting platform. Both ends of the optical axis are coaxially connected to the threaded shaft, and the threaded shaft slides in the groove.

4. The automotive sheet metal grinding and processing equipment according to claim 3, characterized in that, It also includes a locking assembly, which includes a limiting block fixed at the connection between the optical axis and the threaded shaft. The size of the limiting block is larger than the size of the slide groove. A locking nut is threaded onto the threaded shaft. A locking groove is opened on the mounting platform. The locking groove communicates with the moving groove. A locking screw is connected in the locking groove. The locking screw passes through the moving groove and contacts the optical axis.

5. The automotive sheet metal grinding and processing equipment according to claim 4, characterized in that, The workbench includes a housing, several controllers disposed inside the housing, several support columns fixed to the bottom of the housing, and a working surface fixed to the surface of the housing. Several grooves are formed on the working surface, and fixed columns are connected to the grooves. The fixed columns are glued to the automotive sheet metal.

6. The automotive sheet metal grinding and processing equipment according to claim 2 or 5, characterized in that, The grinding and processing assembly includes a housing, a rotary motor built into the housing, an output shaft of the rotary motor located outside the housing, a mounting groove on the output shaft of the rotary motor, and a precision grinding component detachably connected to the mounting groove.

7. The automotive sheet metal grinding and processing equipment according to claim 6, characterized in that, The precision polishing assembly includes a connecting block magnetically connected to the mounting slot and a polishing block fixedly connected to the connecting block. The polishing block is a hollow block, and the outer surface of the polishing block is a polishing surface.

8. The automotive sheet metal grinding and processing equipment according to claim 7, characterized in that, The polishing block includes a bottom polishing block, a side polishing block, and a top block. The bottom polishing block and the side polishing block are integrally formed. The top block is detachably connected to the side polishing block. The top block is integrally formed with a connecting block. A first plate is fixedly connected to the side of the bottom polishing block, and a second plate is fixedly connected to the side of the side polishing block. A cavity is provided between the first plate and the bottom polishing block, and between the second plate and the side polishing block. A first airbag and a second airbag are provided in the corresponding cavity. The expansion surfaces of the first airbag and the second airbag face the bottom polishing block and the side polishing block, respectively.

9. The automotive sheet metal grinding and processing equipment according to claim 8, characterized in that, It also includes a gas reservoir disposed within the cavity block, the gas reservoir being controlled by a controller, and further includes a first wire and a second wire, the first wire passing through a first plate and connected to the gas reservoir, and the second wire passing through a second plate and connected to the gas reservoir.

10. The automotive sheet metal grinding and processing equipment according to claim 9, characterized in that, The top block and the side grinding block are detachably connected by a hidden pin. A slot is opened at the end of the side grinding block, and a chamfering cutter is installed in the slot. The chamfering cutter is used to grind the chamfered surface, and the pressure applied to the side grinding block acts on the chamfering cutter.

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