Efficient grinding method and device for automobile metal ornament

Abstract

The invention relates to the field of automobile part grinding, and discloses an efficient grinding device for automobile metal ornaments.The efficient grinding device comprises a rack, a workbench assembly and a grinding mechanism are installed on the rack, the grinding mechanism comprises a lifting frame, a rotating frame is rotatably installed on the lifting frame, and a sliding frame is slidably installed on the rotating frame; a grinding surface of a grinding head of the grinding mechanism is horizontally arranged, a connecting seat is slidably mounted at the bottom of the sliding frame in the vertical direction, a second spring is arranged between the connecting seat and the sliding frame, a vertically-arranged connecting column is mounted at the bottom of the connecting seat, and the output end of a third motor arranged on the sliding frame extends into an inserting hole formed in the end of the connecting column to form power connection. The bottom of the connecting column is provided with a base through a ball universal joint, the ball universal joint is fixedly connected with the base and movably connected with the connecting column, a groove is formed in the connecting position of the ball universal joint and the connecting column, the bottom of the base is detachably provided with a grinding assembly, and the upper end of the base is provided with a self-adaptive component.

Description

Technical Field

[0001] The invention relates to the technical field of automobile parts grinding, and in particular to a method and a device for efficiently grinding automobile metal ornaments. Background Art

[0002] When processing automobile metal parts or metal decorative parts, in order to improve the user experience, it is generally necessary to polish and grind their surfaces. Due to shape restrictions, when the surface of the part to be polished contains a curved surface, it is generally necessary to perform corresponding manual programming in advance according to the actual situation of the curved surface, and the preparation work is relatively cumbersome. Based on this point, a search was conducted and the Chinese utility model patent with the authorization announcement number CN216707008U was found, which discloses a multi-degree-of-freedom adaptive curved surface polishing and grinding machine. By setting a cylinder and a universal head, the cylinder is used to drive the grinding head to move downward. Under the action of three cylinders, the grinding head always presses the surface of the part. The output pressure of the three cylinders is the same. The pressure and the reaction force of the part curved surface on the grinding head constitute a set of balancing forces. As the grinding head moves on the surface of the part curved surface, this set of balancing forces changes continuously, and the tangent point between the grinding head and the part curved surface changes accordingly. The operation is convenient and the grinding efficiency of the parts is improved, but it has some shortcomings:

[0003] 1. When the grinding head moves on the surface of the part, the angle between it and the horizontal plane is constantly changing, so the grinding head will deflect upward at one end and downward at the other end. Then, among the three cylinders, the piston rod of the cylinder close to the end where the grinding head deflects upward will retract into the cylinder body, and the air pressure will increase. The piston rod of the cylinder close to the end where the grinding head deflects downward will extend out of the cylinder body, and the air pressure will decrease.

[0004] 2. The three cylinders are distributed in a circular array. Therefore, in order to prevent the grinding from being affected by unbalanced forces on both sides of the tangent point between the grinding head and the part surface, that is, to achieve the above-mentioned balanced force, the output pressures of the three cylinders should be kept the same. However, according to 1, when the grinding head moves on the surface of the part, the air pressures in the three cylinders change in real time. If the output pressures of the three cylinders are to be kept the same, the power sources of the three cylinders need to be adjusted in real time to ensure that the output pressures of the three cylinders are the same. However, the angle changes of the curved surface are very complex, which will make the program control of the power source very complex.

[0005] Based on the above, the present invention proposes a method and device for efficiently polishing automobile metal trims, which can simplify the program control of three cylinders while achieving adaptive curved surface polishing. Summary of the invention

[0006] In order to solve the problems mentioned in the above background, the present invention provides a method and device for efficiently polishing automobile metal trims.

[0007] In order to achieve the above technical objectives, the technical solution adopted by the present invention is as follows.

[0008] A highly efficient grinding device for automobile metal trims comprises a frame, a workbench assembly and a grinding mechanism are mounted on the frame, the grinding mechanism comprises a lifting frame and a linear module group 3 driving the lifting frame to move in a vertical direction, a rotating frame is rotatably mounted on the lifting frame, and a connecting shaft formed at the rotating mounting position forms a power connection with a motor 2 arranged on the lifting frame, the connecting shaft is horizontally arranged, a slide frame and a linear module group 4 driving the slide frame to move are slidably mounted on the rotating frame, initially, the grinding surface of the grinding head of the grinding mechanism is horizontally arranged, a connecting seat is slidably mounted on the bottom of the slide frame in a vertical direction, and a spring 2 is arranged between the two, a vertically arranged connecting column is mounted on the bottom of the connecting seat, and the output end of the motor 3 arranged on the slide frame extends into a jack arranged at the end of the connecting column to form a power connection;

[0009] A base is installed at the bottom of the connecting column through a ball head universal joint. The ball head universal joint is fixedly connected to the base and movably connected to the connecting column with a groove formed at the connection. A grinding component is detachably installed at the bottom of the base, and an adaptive component is arranged at the upper end of the base.

[0010] Furthermore, the adaptive component includes a support arranged on the outer circumferential surface of the connecting column, a connecting assembly arranged between the base and the support, and a power source arranged on the lifting frame. The connecting assembly is arranged in three groups in an array along the circumferential direction of the connecting column. The connecting assembly includes a cylinder body, a cylinder cover arranged at the open end of the cylinder body and hinged with the support ball, a cylinder plug is sleeved in the cylinder body, a cylinder plug rod is extended from the end of the cylinder plug, and the end of the cylinder plug rod passes through the closed end of the cylinder body and is hinged with the base ball.

[0011] Furthermore, the power source includes a fixed seat, the upper end surface of the fixed seat is provided with a vertically arranged oil groove, the bottom of the fixed seat is provided with a bottom nozzle connected to the oil groove, a piston is sleeved in the oil groove, and three corresponding connecting components are provided for the oil groove;

[0012] A rotary joint is installed on the outside of the connecting column. One end of the rotary joint is connected to the bottom nozzle through connecting pipe 2, and the other end of the rotary joint is connected to the side nozzle arranged on the outer surface of the cylinder body and close to the cylinder head through connecting pipe 1. Hydraulic medium is stored between the oil tank and the cylinder body.

[0013] Furthermore, a weight is detachably mounted on the upper end of the piston.

[0014] Furthermore, a rocker arm is installed on the fixed seat, one end of the rocker arm is hinged to the fixed seat, and a threaded shaft extends from the other end. The sliding hole arranged on the rocker arm and the convex pin arranged on the upper end of the piston form a sliding connection. A counterweight block is installed on the external thread of the threaded shaft, and the diameter of the cylinder body is smaller than the groove diameter of the oil groove.

[0015] Furthermore, the grinding assembly includes a frame detachably connected to the base, and a grinding head is arranged outside the frame.

[0016] Furthermore, a cannula is coaxially extended at the end of the frame, a plurality of liquid outlets are arranged in an array on the end surface of the grinding head, and a connecting channel for connecting the cannula with the liquid outlet is arranged on the frame;

[0017] The output shaft of the motor three is in the shape of a hollow shaft and a connector is installed on the upper end of the output shaft. The connector is connected to a water pump through a pipeline. The water pump is connected to a box storing polishing liquid. The output shaft is connected to the jack through a spline to form a power connection. When the connecting column moves along the axis centerline, the motor three continuously outputs power to the connecting column.

[0018] The groove is connected with the jack, the outer surface of the ball joint is provided with an annular groove, the bottom of the annular groove is provided with a connecting hole along the ball diameter direction, a sealing ball is installed at the connection between the connecting column and the ball joint, and the sealing ball and the annular groove form a sealing fit;

[0019] A nozzle is extended from the lower opening of the connecting hole, and a through hole for avoiding the nozzle is provided on the upper end surface of the base. The lower end of the nozzle is fixedly connected to the upper opening of the through hole, and a convex tube is extended from the lower opening of the through hole. A sleeve is sleeved in the convex tube, an external step is provided at the upper pipe opening of the sleeve, and an internal step is provided at the lower pipe opening of the convex tube. The external step and the convex tube form a sealed sliding guide fit, and a spring three is provided between the external step and the nozzle. When the grinding assembly is installed on the base, the upper pipe opening of the insert tube conflicts with the lower pipe opening of the sleeve, and the spring three is compressed.

[0020] Furthermore, an insertion rod extends from the end of the frame, and the free end of the insertion rod is configured to be a truncated cone with an outer diameter decreasing along the extension direction of the insertion rod;

[0021] A vertically arranged fixed shaft is arranged inside the base, an elastic rod is extended downward from the lower end surface of the fixed shaft, the distance between the elastic rod and the axis center line of the fixed shaft decreases from bottom to top, an inclined surface is arranged on the side of the lower end of the elastic rod facing the axis center line of the fixed shaft, the distance between the inclined surface and the axis center line of the fixed shaft decreases from bottom to top, and a plurality of elastic rods are arranged in an array along the circumferential direction of the fixed shaft;

[0022] A clamping block is arranged on the side of the elastic rod facing the axis center line of the fixed shaft, and the side of the clamping block facing the axis center line of the fixed shaft includes a lower arc surface, a middle plane and an upper arc surface distributed from bottom to top. When the insertion rod contacts the lower end surface of the fixed shaft, the clamping groove arranged on the outer cylindrical surface of the insertion rod faces the clamping block.

[0023] Furthermore, a pressure ring is slidably installed in the base along the vertical direction, a lever is extended from the outer circular surface of the pressure ring, the end of the lever extends out of the base, a spring five is arranged between the pressure ring and the base for elastically driving the pressure ring to move downward, a sleeve hole is opened on the end face of the pressure ring, a pressure sleeve is extended at the hole mouth, the bottom ends of several elastic rods pass through the pressure sleeve, and the inner wall of the pressure sleeve is in contact with the elastic rods.

[0024] Furthermore, the workbench assembly includes a cross slide, a clamping table is rotatably mounted on the upper end surface of the cross slide, and a rotating shaft formed at the rotating mounting position is dynamically connected to a motor arranged at the bottom of the cross slide, and the rotating shaft is arranged vertically.

[0025] Compared with the prior art, the present invention has the following beneficial effects:

[0026] 1. The three groups of connecting components in the adaptive component of the present application are equivalent to the three cylinders mentioned in the background technology. Therefore, it is feasible to realize adaptive curved surface polishing and grinding of automobile parts through the cooperation of the three groups of connecting components. It will not be elaborated here. On this basis, the gravity of the piston is applied to the cylinder plug through the hydraulic medium, and then to the base, that is, the output pressure of the connecting component is determined by the gravity of the cylinder plug and is not affected by other factors. Therefore, in the process of the grinding head moving on the curved surface of the automobile part, regardless of whether the cylinder plug rod of the connecting component is retracted or extended from the cylinder body, the output pressure of the connecting component is constant, and there is no need to program the power source. In summary, the present application can achieve adaptive curved surface polishing and grinding while greatly simplifying the control of the three connecting components (equivalent to the cylinders mentioned in the background technology).

[0027] 2. In the present application, the automatic disassembly and installation of the grinding head can be realized, the degree of automation can be improved, and the labor intensity of the staff can be reduced. In addition, in the detachable installation method of the grinding head, when the grinding head is installed on the base, the elastic deformation of the elastic rod can be limited by the pressing sleeve, thereby limiting the removal of the grinding head from the base. That is, in the subsequent grinding process, the grinding head can be regarded as a fixed installation, reducing the impact of the detachable installation method on the grinding process. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of the present invention;

[0029] Figure 2 It is a structural schematic diagram of the workbench assembly;

[0030] Figure 3 It is the structural schematic diagram of the cross slide;

[0031] Figure 4 It is a structural diagram of the grinding mechanism;

[0032] Figure 5 A partial diagram of the grinding mechanism Figure 1 ;

[0033] Figure 6 A partial diagram of the grinding mechanism Figure 2 ;

[0034] Figure 7 It is a partial cross-sectional view of the grinding mechanism;

[0035] Figure 8 It is a cross-sectional view of the base and the grinding assembly;

[0036] Fig. 9 is a cross-sectional view of the connection column and the ball joint;

[0037] Fig.10 A cross-sectional view of a detachable mounting structure of a grinding assembly;

[0038] Fig.11 It is a structural diagram of the power source.

[0039] The reference numerals in the accompanying drawings are:

[0040] 100, frame; 200, workbench assembly; 201, cross slide; 202, X rod; 203, Y rod; 204, linear module 1; 205, linear module 2; 206, motor 1; 207, clamping table; 208, disassembly hole; 209, support plate; 210, spring 1; 300, grinding mechanism; 301, linear module 3; 302, lifting frame; 303, motor 2; 304, rotating frame; 305, linear module 4; 306, slide; 307, power source; 3071, fixed seat; 3072, oil tank; 3073, connecting pipe 2; 3074, piston; 3075, swing rod; 3076, threaded shaft; 3077, counterweight; 308, grinding assembly; 3081, skeleton; 3 082, grinding head; 3083, insert tube; 3084, insert rod; 3085, slot; 309, connecting seat; 310, spring two; 311, connecting column; 312, ball head universal joint; 3121, ring groove; 3122, connecting hole; 3123, sealing ball; 313, base; 314, support; 315, connecting assembly; 316, rotating joint; 317, connecting tube one; 318, convex tube; 319, nozzle; 320, sleeve; 321, spring three; 322, movable seat; 323, spring four; 324, fixed shaft; 325, elastic rod; 326, block; 327, pressure ring; 328, pressure sleeve; 329, lever; 330, spring five; 331, motor three; 332, connecting head. DETAILED DESCRIPTION

[0041] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined invention purpose, the specific implementation mode, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0042] Reference Figure 1-Figure 11 A high-efficiency grinding device for automobile metal trims includes a frame 100 on which a workbench assembly 200 and a grinding mechanism 300 are mounted.

[0043] Workbench assembly 200:

[0044] Reference Figure 1-Figure 3 The workbench assembly 200 includes a cross slide 201 and a driving component for driving the cross slide 201 to move. Further, a boss extends from the bottom of the cross slide 201, and the side of the boss is slidably connected with an X-rod 202 and a Y-rod 203 in a horizontal direction. The sliding directions of the X-rod 202 and the Y-rod 203 are perpendicular to each other. The driving component includes a linear module 1 204 for driving the X-rod 202 to move along the sliding direction of the Y-rod 203 and a linear module 2 205 for driving the Y-rod 203 to move along the sliding direction of the X-rod 202. Through the cooperation of the linear module 1 204 and the linear module 2 205, the cross slide 201 can be driven to move in a plane coordinate system composed of the sliding directions of the X-rod 202 and the Y-rod 203. In addition, referring to Figure 1 and Figure 2 This driving mode allows the driving component to be located on one side of the cross slide 201, that is, the other side of the cross slide 201 is open, which does not affect the entry and exit of the parts to be polished.

[0045] A clamping table 207 is rotatably installed on the upper end surface of the cross slide 201, and the rotating shaft formed at the rotating installation position is dynamically connected to a motor 206 arranged on the boss. The rotating shaft is arranged vertically. The clamping table 207 is used to clamp the parts to be polished. As for the clamping method, it can be achieved by using existing clamping technology and will not be elaborated.

[0046] Grinding mechanism 300:

[0047] Reference Figure 4-Figure 11 The grinding mechanism 300 includes a lifting frame 302 and a linear module 301 that drives the lifting frame 302 to move in a vertical direction. A rotating frame 304 is rotatably installed on the lifting frame 302, and a connecting shaft formed at the rotating installation position forms a power connection with a motor 2 303 arranged on the lifting frame 302, and the connecting shaft is arranged horizontally.

[0048] A slide 306 and a linear module 305 for driving the slide 306 to move are slidably mounted on the rotating frame 304.

[0049] Initially, the grinding surface of the grinding head 3082 of the grinding mechanism 300 is arranged horizontally, and a connecting seat 309 is slidably installed at the bottom of the slide 306 in the vertical direction, and a spring 2 310 is arranged between the two. The elastic force of the spring 2 310 drives the connecting seat 309 to move downward, and a vertically arranged connecting column 311 is installed at the bottom of the connecting seat 309.

[0050] The output shaft of motor three 331 arranged on the slide 306 is in the shape of a hollow shaft, and a connector 332 is installed on the upper end thereof. The connector 332 is connected to a water pump through a pipeline, and the water pump is connected to a box storing polishing liquid. A socket is penetrated through the end of the connecting column 311. The output shaft of motor three 331 is connected to the connecting column 311 through a connecting piece. When the connecting column 311 moves along the axis direction, the motor three 331 continuously outputs power to the connecting column 311 through the connecting piece. The connecting piece includes an external spline arranged on the output shaft of motor three 331 and an internal spline arranged on the socket.

[0051] A base 313 is installed at the bottom of the connecting column 311 through a ball joint 312. The ball joint 312 is fixedly connected to the base 313. The ball joint 312 is movably connected to the connecting column 311 and a groove is formed at the connection position. The groove is connected to the socket. An annular groove 3121 is provided on the outer surface of the ball joint 312 located in the groove. A connecting hole 3122 is penetrated through the bottom of the annular groove 3121 along the ball diameter direction. In addition, a sealing ball 3123 is also installed at the connection between the connecting column 311 and the ball joint 312. The sealing ball 3123 and the annular groove 3121 form a sealing fit. Therefore, the polishing liquid is drawn by the water pump and can flow into the connecting hole 3122 through the connector 332, the socket, the groove, and the annular groove 3121 in sequence.

[0052] The bottom of the base 313 is detachably mounted with a grinding assembly 308 , and the upper end of the base 313 is provided with an adaptive component.

[0053] Adaptive components:

[0054] Reference Figure 4 , Figure 6 and Figure 7 The adaptive component includes a support 314 arranged on the outer circumferential surface of the connecting column 311, a connecting component 315 arranged between the base 313 and the support 314, and a power source 307 arranged on the lifting frame 302. The connecting components 315 are arranged in three groups in an array along the circumferential direction of the connecting column 311.

[0055] Reference Figure 7 The connecting assembly 315 includes a cylinder body, a cylinder cover arranged at the open end of the cylinder body and a support 314 which is ball-jointed, a cylinder plug is sleeved in the cylinder body, a cylinder plug rod extends from the end of the cylinder plug, and the end of the cylinder plug rod passes through the closed end of the cylinder body and is ball-jointed with the base 313.

[0056] Reference Fig.11 The power source 307 includes a fixed seat 3071, the upper end surface of the fixed seat 3071 is provided with a vertically arranged oil groove 3072, the bottom of the fixed seat 3071 is provided with a bottom nozzle connected to the oil groove 3072, the oil groove 3072 is sleeved with a piston 3074, and the oil groove 3072 is provided with three corresponding connecting components 315.

[0057] A rotary joint 316 is installed on the outside of the connecting column 311, and one end of the rotary joint 316 is connected to the bottom nozzle via a connecting pipe 2 3073, and the other end of the rotary joint 316 is connected to a side nozzle arranged on the outer surface of the cylinder body and close to the cylinder head via a connecting pipe 1 317. Hydraulic medium, such as hydraulic oil, is stored between the oil tank 3072 and the cylinder body.

[0058] The three groups of connecting components 315 are equivalent to the three cylinders mentioned in the background technology. Therefore, it is feasible to achieve adaptive surface polishing and grinding of automobile parts through the cooperation of the three groups of connecting components 315. It will not be elaborated here. On this basis, the gravity of the piston 3074 is applied to the cylinder plug through the hydraulic medium, and then applied to the base 313, that is, the output pressure of the connecting component 315 is determined by the gravity of the cylinder plug and is not affected by other factors. Therefore, in the process of the grinding head 3082 moving on the curved surface of the automobile part, regardless of whether the cylinder plug rod of the connecting component 315 is retracted or extended from the cylinder body, the output pressure of the connecting component 315 is constant, and there is no need to program the power source 307. In summary, the present application can greatly simplify the control of the three connecting components 315 (equivalent to the cylinders mentioned in the background technology) while achieving adaptive surface polishing and grinding.

[0059] In a preferred embodiment, for different automobile parts grinding, the output pressure of the connection assembly 315 should be adjusted accordingly, including but not limited to the two methods mentioned below:

[0060] First, a weight can be detachably installed on the upper end of the piston 3074. By replacing weights of different specifications, the gravity of the piston 3074 can be adjusted, thereby achieving the purpose of adjusting the output pressure of the connecting component 315.

[0061] Second, refer to Fig.11A rocker arm 3075 is installed on the fixed seat 3071, one end of the rocker arm 3075 is hinged to the fixed seat 3071, and a threaded shaft 3076 is extended from the other end. The sliding hole arranged on the rocker arm 3075 and the convex pin arranged on the upper end of the piston 3074 form a sliding connection, and a counterweight block 3077 is installed on the external thread of the threaded shaft 3076. Based on the principle of lever, by adjusting the position of the counterweight block 3077 on the threaded shaft 3076, the force applied to the piston 3074 can be adjusted, so as to achieve the purpose of adjusting the output pressure of the connecting component 315. It should be noted that the diameter of the cylinder body is much smaller than the groove diameter of the oil groove 3072. In this way, when the grinding head 3082 moves on the curved surface of the automobile part, the moving distance of the piston 3074 is small, the deflection angle of the rocker arm 3075 is small, and the change of the force applied to the piston 3074 is small, which can be regarded as zero.

[0062] Grinding assembly 308:

[0063] Reference Figure 8 and Fig.10 The grinding assembly 308 includes a skeleton 3081, a grinding head 3082 is arranged on the outside of the skeleton 3081, a cannula 3083 is coaxially extended from the end of the skeleton 3081, a plurality of liquid outlets are arranged on the end face array of the grinding head 3082, and a connecting channel for connecting the cannula 3083 with the liquid outlets is arranged on the skeleton 3081. In addition, an insertion rod 3084 is extended from the end of the skeleton 3081, and the free end of the insertion rod 3084 is arranged in a frustum shape, and the outer diameter of the frustum decreases along the extension direction of the insertion rod 3084.

[0064] Reference Figure 8 and Fig.10 The base 313 is provided with a vertically arranged fixed shaft 324 inside, and an elastic rod 325 extends downward from the lower end surface of the fixed shaft 324. The elastic rod 325 is made of elastic metal material and has elastic properties. The elastic rod 325 is arranged at an angle, and the distance between it and the axis line of the fixed shaft 324 decreases from bottom to top. The lower end of the elastic rod 325 is provided with an inclined surface on the side facing the axis line of the fixed shaft 324, and the distance between the inclined surface and the axis line of the fixed shaft 324 decreases from bottom to top. A plurality of elastic rods 325 are arranged in an array along the circumferential direction of the fixed shaft 324. When the insertion rod 3084 passes through the avoidance hole set at the lower end of the base 313 from bottom to top and is inserted between the plurality of elastic rods 325, the cooperation between the truncated cone-shaped free end of the insertion rod 3084 and the inclined surface can cause the elastic rod 325 to undergo elastic deformation away from the axis line of the fixed shaft 324.

[0065] A block 326 is also provided on the side of the elastic rod 325 facing the axis line of the fixed shaft 324. The side of the block 326 facing the axis line of the fixed shaft 324 includes a lower arc surface, a middle plane and an upper arc surface distributed from bottom to top. When the insertion rod 3084 contacts the lower end surface of the fixed shaft 324, the groove 3085 arranged on the outer cylindrical surface of the insertion rod 3084 is opposite to the block 326. Therefore, the insertion rod 3084 of the grinding assembly 308 can be directly inserted between several elastic rods 325 from bottom to top, and the connection between the grinding assembly 308 and the base 313 is realized by the cooperation between the block 326 and the groove 3085. Similarly, when a downward pull is applied to the grinding assembly 308, the grinding assembly 308 can be removed from the base 313.

[0066] Further, when polishing automobile parts, the polishing assembly 308 needs to be fixed on the base 313 to prevent the above-mentioned plug-in connection from affecting the polishing process. Fig.10 A pressing ring 327 is slidably installed in the base 313 along the vertical direction. A lever 329 is extended from the outer circumferential surface of the pressing ring 327. The end of the lever 329 extends out of the base 313. A spring 330 is arranged between the pressing ring 327 and the base 313. Its elastic force drives the pressing ring 327 to move downward. A sleeve hole is opened on the end surface of the pressing ring 327. A pressing sleeve 328 is extended at the opening of the sleeve hole. The bottom ends of several elastic rods 325 pass through the pressing sleeve 328. The inner wall of the pressing sleeve 328 fits with the elastic rod 325. Initially, due to the existence of the pressing sleeve 328, the elastic rod 325 is restricted from moving away from the axis of the fixed shaft 324. Elastic deformation, therefore, the grinding component 308 and the base 313 are fixedly connected. When the pressure ring 327 is driven upward by the lever 329 and the pressure sleeve 328 cancels the restriction on the elastic rod 325, the plug-in connection between the grinding component 308 and the base 313 is restored, and the grinding component 308 can be removed. Thereafter, the pressure ring 327 is driven upward by the lever 329 again, and the pressure sleeve 328 cancels the restriction on the elastic rod 325. Then, after the new grinding component 308 is installed on the base 313, the lever 329 is released, and the new grinding component 308 and the base 313 are fixedly connected.

[0067] Further, see Figure 8A nozzle 319 extends from the lower opening of the connecting hole 3122, and a through hole for avoiding the nozzle 319 is provided on the upper end surface of the base 313. The lower end of the nozzle 319 is fixedly connected to the upper opening of the through hole. A convex tube 318 extends from the lower opening of the through hole. A sleeve 320 is sleeved in the convex tube 318. An external step is provided at the upper opening of the sleeve 320, and an internal step is provided at the lower opening of the convex tube 318. The cooperation between the external step and the internal step prevents the sleeve 320 from detaching from the convex tube 318. The external step and the convex tube 318 form a sealed sliding guide, and a spring three 321 is arranged between the external step and the nozzle 319. When the polishing assembly 308 is installed on the base 313, the upper tube mouth of the insert tube 3083 conflicts with the lower tube mouth of the sleeve 320, and the spring three 321 is compressed. The polishing liquid can flow into the insert tube 3083 through the connecting hole 3122, the nozzle 319, the convex tube 318, and the sleeve 320, that is, into the polishing assembly 308, to provide polishing liquid for the subsequent polishing process.

[0068] In a preferred embodiment, in order to reduce the labor intensity of manual labor and realize the automatic replacement of the grinding assembly 308, refer to Figure 8 A movable seat 322 is slidably installed in the base 313 along the vertical direction, and an inner hole is provided on the movable seat 322 for avoiding the insertion tube 3083. A spring four 323 is provided between the movable seat 322 and the base 313, and its elastic force drives the movable seat 322 to move downward. An external shoulder is provided on the outside of the insertion tube 3083. When the grinding assembly 308 is installed on the base 313, the shoulder contacts with the movable seat 322 and the spring four 323 is compressed. In this way, when disassembling the grinding assembly 308, it is only necessary to move the lever 329 to move the pressure ring 327 upward, and the pressure sleeve 328 cancels the restriction on the elastic rod 325. After that, the spring four 323 releases the elastic force and will actively pop out the grinding assembly 308 to realize automatic disassembly.

[0069] Reference Figure 3 There are two holes on the end face of the cross slide 201, one is a disassembly hole 208 with upper and lower openings open, and the other is an assembly hole with the upper opening open and the lower opening blocked. A support plate 209 is provided inside, and a spring 210 is provided between the support plate 209 and the lower opening. Initially, the upper end face of the support plate 209 is close to the upper opening of the assembly hole.

[0070] The diameters of the disassembly hole 208 and the assembly hole are slightly smaller than the outer diameter of the base 313 , and the elastic coefficient of the spring 1 210 is greater than the elastic coefficient of the spring 4 323 .

[0071] The cross slide 201 moves so that the disassembly hole 208 is located directly below the grinding assembly 308, and then the grinding assembly 308 is driven downward by the linear module 301, and the grinding assembly 308 can pass through the disassembly hole 208, and the lever 329 will contact the cross slide 201, so that in the subsequent downward movement of the grinding assembly 308, the lever 329 is kept stationary, and a relative upward movement occurs relative to the base 313, and the pressing sleeve 328 cancels the restriction on the elastic rod 325, and the spring 4 323 releases the elastic force, and the grinding assembly 308 is actively ejected, thereby realizing automatic disassembly;

[0072] The linear module 301 cooperates with the cross slide 201 so that the assembly hole is located directly below the base 313. At the same time, the new grinding component 308 has been placed on the support plate 209 in advance, and then the linear module 301 is used to drive the base 313 to move downward. During the downward movement, first, because the lever 329 does not contact any object, the pressure sleeve 328 does not cancel the restriction on the elastic rod 325. Therefore, when the upper end of the insertion rod 3084 is inserted into the plurality of elastic rods 325, it cannot be inserted. The downward movement of the base 313 will push the new grinding component 308 and the support plate 209 downward together, and the spring 1 210 is compressed. The compression amount of the spring 1 210 is H1. In addition, after the upper end of the insertion rod 3084 is inserted into the plurality of elastic rods 325, it continues to move to achieve the distance between the grinding component 308 and the base 313, which is named H2. When H1 is greater than H2, the lever After the spring 210 is released, the lever 329 is out of contact with the base 313, and the pressing sleeve 328 again restricts the elastic rod 325, so that the grinding assembly 308 and the base 313 are connected. Then the linear module 301 drives the base 313 to move upward. During the upward movement, since the elastic force of the spring 210 has not been fully released, the elastic force of the spring 4 323 is restricted from being released, and the grinding assembly 308 and the base 313 remain in the connected state. When the elastic force of the spring 210 is fully released, the lever 329 has been separated from the contact with the base 313 and has moved up a certain distance. The pressing sleeve 328 restricts the elastic rod 325 again, and the grinding assembly 308 and the base 313 are fixedly connected, that is, the new grinding assembly 308 is installed on the base 313.

[0073] A highly efficient polishing method for automobile metal trims:

[0074] Step 1: placing the automobile metal decoration to be polished on the clamping table 207, and clamping the automobile metal decoration by the clamping table 207;

[0075] Step 2: The rotating frame 304 is driven to rotate by the second motor 303, so that the grinding surface of the grinding head 3082 is parallel to the plane of the automobile metal decoration, and then the grinding head 3082 is driven to move relative to the automobile metal decoration in the three-dimensional coordinate system through the cooperation of the cross slide 201 and the linear module three 301, and at the same time, the connecting column 311 is driven to rotate by the third motor 331, and the connecting column 311 rotates with the grinding head 3082, so as to realize the plane grinding of the automobile metal decoration;

[0076] Step three: Through the cooperation of the cross slide 201, the linear module three 301 and the motor three 331, the grinding head 3082 is driven to grind the automobile metal accessories. At the same time, with the cooperation of the three sets of connecting components 315, adaptive surface grinding of automobile parts can be achieved.

[0077] The linear module mentioned in this application can be the existing electric telescopic rod technology, or the existing screw linear motion technology, etc., which will not be described in detail.

[0078] The above description is only a preferred embodiment of the present invention and does not limit the present invention in any form. Although the present invention has been disclosed as a preferred embodiment as above, it is not used to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any brief modifications, equivalent changes and modifications made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention are still within the scope of the technical solution of the present invention.

Claims

1. An efficient grinding device for automobile metal trims, comprising a frame (100), on which a workbench assembly (200) and a grinding mechanism (300) are mounted, characterized in that: The grinding mechanism (300) includes a lifting frame (302) and a linear module three (301) for driving the lifting frame (302) to move in a vertical direction. A rotating frame (304) is rotatably mounted on the lifting frame (302), and a connecting shaft formed at the rotating mounting position forms a power connection with a motor two (303) arranged on the lifting frame (302). The connecting shaft is arranged horizontally. A slide frame (306) and a linear module for driving the slide frame (306) to move are slidably mounted on the rotating frame (304). Four (305), initially, the grinding surface of the grinding head (3082) of the grinding mechanism (300) is arranged horizontally, a connecting seat (309) is slidably installed at the bottom of the slide (306) in the vertical direction, and a spring two (310) is arranged between the two, and a vertically arranged connecting column (311) is installed at the bottom of the connecting seat (309), and the output end of the motor three (331) arranged on the slide (306) extends into the jack arranged at the end of the connecting column (311) to form a power connection; The bottom of the connecting column (311) is installed with a base (313) through a ball joint (312). The ball joint (312) is fixedly connected to the base (313) and movably connected to the connecting column (311). A groove is formed at the connection. A grinding assembly (308) is detachably installed at the bottom of the base (313). An adaptive component is arranged at the upper end of the base (313).

2. The high-efficiency grinding device for automobile metal trims according to claim 1 is characterized in that: The adaptive component comprises a support (314) arranged on the outer circumferential surface of a connecting column (311), a connecting assembly (315) arranged between a base (313) and the support (314), and a power source (307) arranged on a lifting frame (302). The connecting assembly (315) is arranged in three groups in an array along the circumferential direction of the connecting column (311). The connecting assembly (315) comprises a cylinder body, a cylinder cover arranged at an open end of the cylinder body and ball-jointed with the support (314), a cylinder plug is sleeved in the cylinder body, a cylinder plug rod extends from the end of the cylinder plug, and the end of the cylinder plug rod passes through the closed end of the cylinder body and is ball-jointed with the base (313).

3. The high-efficiency grinding device for automobile metal trims according to claim 2 is characterized in that: The power source (307) comprises a fixed seat (3071), the upper end surface of the fixed seat (3071) is provided with a vertically arranged oil groove (3072), the bottom of the fixed seat (3071) is provided with a bottom nozzle connected to the oil groove (3072), the oil groove (3072) is sleeved with a piston (3074), and the oil groove (3072) is provided with three corresponding connection components (315); A rotary joint (316) is installed outside the connecting column (311), one end of the rotary joint (316) is connected to the bottom nozzle via a second connecting pipe (3073), the other end of the rotary joint (316) is connected to a side nozzle arranged on the outer surface of the cylinder body and close to the cylinder cover via a first connecting pipe (317), and hydraulic medium is stored between the oil tank (3072) and the cylinder body.

4. The high-efficiency grinding device for automobile metal trims according to claim 3 is characterized in that: A weight is detachably mounted on the upper end of the piston (3074).

5. The high-efficiency grinding device for automobile metal trims according to claim 3 is characterized in that: A swing rod (3075) is installed on the fixed seat (3071), one end of the swing rod (3075) is hinged to the fixed seat (3071), and a threaded shaft (3076) extends from the other end. A sliding hole arranged on the swing rod (3075) and a convex pin arranged on the upper end of the piston (3074) form a sliding connection, and a counterweight block (3077) is installed on the external thread of the threaded shaft (3076). The diameter of the cylinder body is smaller than the groove diameter of the oil groove (3072).

6. The high-efficiency grinding device for automobile metal trims according to claim 3, characterized in that: The grinding assembly (308) comprises a frame (3081) detachably connected to the base (313), and a grinding head (3082) is arranged outside the frame (3081).

7. The high-efficiency grinding device for automobile metal trims according to claim 6, characterized in that: A plug (3083) coaxially extends from the end of the frame (3081), a plurality of liquid outlet holes are arranged in an array on the end surface of the grinding head (3082), and a connecting channel for connecting the plug (3083) with the liquid outlet holes is arranged on the frame (3081); The output shaft of the third motor (331) is in the shape of a hollow shaft and a connector (332) is installed on the upper end of the output shaft. The connector (332) is connected to a water pump through a pipeline. The water pump is connected to a box storing polishing liquid. The output shaft is connected to the jack through a spline to form a power connection. When the connecting column (311) moves along the axis direction, the third motor (331) continuously outputs power to the connecting column (311). The groove is connected to the insertion hole, the outer surface of the ball joint (312) is provided with an annular groove (3121), the bottom of the annular groove (3121) is provided with a connecting hole (3122) penetrating along the ball diameter direction, a sealing ball (3123) is installed at the connection between the connecting column (311) and the ball joint (312), and the sealing ball (3123) and the annular groove (3121) form a sealing fit; A nozzle (319) extends from the lower opening of the connecting hole (3122); a through hole for avoiding the nozzle (319) is provided on the upper end surface of the base (313); the lower end of the nozzle (319) is fixedly connected to the upper opening of the through hole; a convex tube (318) extends from the lower opening of the through hole; a sleeve (320) is sleeved in the convex tube (318); an external step is provided at the upper opening of the sleeve (320); an internal step is provided at the lower opening of the convex tube (318); the external step and the convex tube (318) form a sealed sliding guide fit; a spring three (321) is provided between the external step and the nozzle (319); when the grinding assembly (308) is mounted on the base (313), the upper opening of the insert tube (3083) contacts the lower opening of the sleeve (320), and the spring three (321) is compressed.

8. The high-efficiency grinding device for automobile metal trims according to claim 6, characterized in that: An insertion rod (3084) extends from the end of the frame (3081), and the free end of the insertion rod (3084) is configured to be in the shape of a truncated cone with an outer diameter decreasing along the extension direction of the insertion rod (3084); A vertically arranged fixed shaft (324) is arranged inside the base (313); an elastic rod (325) extends downward from the lower end surface of the fixed shaft (324); the distance between the elastic rod (325) and the axis center line of the fixed shaft (324) decreases from bottom to top; an inclined surface is arranged on the side of the lower end of the elastic rod (325) facing the axis center line of the fixed shaft (324); the distance between the inclined surface and the axis center line of the fixed shaft (324) decreases from bottom to top; and a plurality of elastic rods (325) are arranged in an array along the circumferential direction of the fixed shaft (324); A clamping block (326) is provided on one side of the elastic rod (325) facing the axis of the fixed shaft (324); the side of the clamping block (326) facing the axis of the fixed shaft (324) comprises a lower arc surface, a middle plane and an upper arc surface which are sequentially distributed from bottom to top; when the insertion rod (3084) contacts the lower end surface of the fixed shaft (324), the clamping groove (3085) provided on the outer circumferential surface of the insertion rod (3084) faces the clamping block (326).

9. The high-efficiency grinding device for automobile metal trims according to claim 8, characterized in that: A pressing ring (327) is slidably installed in the base (313) along the vertical direction. A lever (329) is extended from the outer circumferential surface of the pressing ring (327). The end of the lever (329) extends out of the base (313). A spring (330) is arranged between the pressing ring (327) and the base (313) for elastically driving the pressing ring (327) to move downward. A sleeve hole is opened on the end surface of the pressing ring (327). A pressing sleeve (328) extends from the hole mouth. The bottom ends of a plurality of elastic rods (325) pass through the pressing sleeve (328), and the inner wall of the pressing sleeve (328) is in contact with the elastic rods (325).

10. The high-efficiency grinding device for automobile metal trims according to claim 1, characterized in that: The workbench assembly (200) comprises a cross slide (201), a clamping platform (207) is rotatably mounted on the upper end surface of the cross slide (201), a rotating shaft formed at the rotatable mounting position is power-connected to a motor (206) arranged at the bottom of the cross slide (201), and the rotating shaft is arranged vertically.

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