Milling mechanism, milling device, and milling method thereof

Abstract

This application relates to a milling mechanism, milling device, and milling method. When milling a boss of a panoramic sunroof, the following steps involve first bringing a follower wheel into contact with the edge of the sunroof glass, with the milling workpiece positioned on one side of the boss to be milled. Then, the milling workpiece is moved from one side of the boss to the other, while the follower wheel rotates synchronously, thus achieving the milling of the top of the boss. Since the rotation axis of the follower wheel is perpendicular to the rotation axis of the milling workpiece, when the follower wheel contacts the edge of the sunroof glass, it corrects the milling workpiece, ensuring that the rotation axis of the milling workpiece is parallel to the normal direction of the boss. Furthermore, as the follower wheel moves along the sunroof glass, the top surface of the boss after milling is correspondingly parallel to the edge of the sunroof glass. In addition, since the wheel surface of the follower wheel and the end face of the milling workpiece facing away from the motor have a preset distance along the axial direction of the rotation axis, the distance between the top surface of the boss after milling and the edge of the sunroof glass is the preset distance, thereby enabling precise control and adjustment of the height position of the top surface of the boss.

Description

Technical Field

[0001] This application relates to the field of milling technology, and in particular to a milling mechanism, milling device and milling method thereof. Background Technology

[0002] With the rapid development of automotive technology and the gradual improvement of product performance, the requirements for material processing precision are also increasing. Related technologies typically involve adjusting and controlling the cavity dimensions of the molding die to improve material processing accuracy. However, after mold opening, the actual dimensions of the material during cooling and solidification will deviate from the theoretical dimensions, resulting in a failure to meet customer requirements. Summary of the Invention

[0003] Therefore, it is necessary to overcome the shortcomings of the existing technology and provide a milling mechanism, milling device and milling method that can improve the machining accuracy of materials.

[0004] On the one hand, this application provides a milling mechanism, including:

[0005] Fixed base;

[0006] An electric motor, which is mounted on the fixed base;

[0007] A milled part, the milled part being connected to the shaft of the motor, the motor being used to drive the milled part to rotate; and

[0008] A follower wheel is rotatably mounted on the fixed base. The follower wheel is spaced apart from the milling workpiece. The wheel surface of the follower wheel and the end face of the milling workpiece opposite to the motor are provided with a preset distance along the axial direction of the rotating shaft. The rotation axis of the follower wheel is perpendicular to the rotation axis of the milling workpiece.

[0009] In one embodiment, the milling mechanism further includes a mounting bracket and a floating mechanism; the fixed base is connected to the mounting bracket via the floating mechanism.

[0010] In one embodiment, the milling mechanism further includes a guiding mechanism; the fixed seat is also connected to the mounting bracket via the guiding mechanism, the guiding mechanism being used to move the fixed seat in an axial direction parallel to the rotating shaft.

[0011] In one embodiment, the guiding mechanism includes a guide rail and a slider slidably disposed on the guide rail, the guide rail being connected to the mounting bracket and the slider being connected to the fixed base.

[0012] In one embodiment, the floating mechanism includes a cylinder and a precision pressure regulating valve. The fixed base is connected to the mounting bracket via the cylinder, and the precision pressure regulating valve can adjust the internal air pressure of the cylinder.

[0013] In one embodiment, the milling mechanism further includes a connecting seat and a buffer. The fixed seat is oscillatingly disposed on the connecting seat, and the rotation axis of the follower wheel and the rotation axis of the milling part are both perpendicular to the swing axis of the fixed seat. The buffer is disposed between the fixed seat and the connecting seat and is located on the side of the swing axis.

[0014] In one embodiment, the milling mechanism further includes a swing joint disposed between the connecting seat and the fixed seat, wherein the fixed seat is rotatably connected to the connecting seat via the swing joint.

[0015] In one embodiment, the buffer is a buffer block or a buffer spring; and / or, there are two buffers, each located on opposite sides of the swing axis.

[0016] In one embodiment, the follower wheel has a groove formed on its surface, and the groove is arranged circumferentially around the surface of the follower wheel; or, the follower wheel has two ribs arranged axially at intervals on its surface, and each rib is arranged circumferentially around the surface of the follower wheel.

[0017] In one embodiment, the milling part is positionably disposed on the rotating shaft along the axial direction of the rotating shaft; and / or, the follower wheel is positionably disposed on the fixed base along the axial direction parallel to the rotating shaft.

[0018] In one embodiment, the rotating shaft is provided with a mounting hole that extends from the end face of the rotating shaft along the axial direction to the interior of the rotating shaft. The milling part is adjustablely inserted into the mounting hole along the axial direction of the rotating shaft. The milling mechanism also includes a first locking member connected to the rotating shaft. When the milling part is adjusted to the target position, the first locking member can lock and fix the milling part to the rotating shaft.

[0019] In one embodiment, the milling mechanism further includes a bracket and an adjusting pad, the bracket being detachably mounted on the fixed base, the adjusting pad being detachably mounted between the bracket and the fixed base, and the follower wheel being rotatably mounted on the bracket.

[0020] In one embodiment, the milling mechanism further includes a correction block, which has a first abutment surface and a second abutment surface. The first abutment surface and the second abutment surface are parallel to each other and have a correction gap. The first abutment surface is used to abut against the wheel surface of the follower wheel, and the second abutment surface is used to abut against the end face of the milling workpiece opposite to the motor.

[0021] On the other hand, this application also provides a milling apparatus, which includes the milling mechanism described above.

[0022] In one embodiment, the milling device further includes a robot arm, a fixture, and a frame. The robot arm is connected to the fixture, which can hold the material to be milled. The robot arm can drive the fixture from the loading station to the milling station. The milling mechanism is mounted on the frame.

[0023] In another aspect, this application also provides a milling method using the aforementioned milling apparatus, comprising:

[0024] In the alignment step, the position of the canopy glass is moved and adjusted so that the follower wheel abuts against the edge of the canopy glass, and the milling part is located on one side of the boss to be milled;

[0025] In the milling step, the milling part is driven to rotate at high speed, and the milling part is moved from one side of the boss relative to the edge to the other side of the boss to mill the top of the boss; wherein, during the movement of the milling part, the follower wheel rotates synchronously along the edge of the canopy glass to guide the movement of the milling part.

[0026] In one embodiment, the step of moving and adjusting the position of the skylight glass so that the follower wheel abuts against the edge of the skylight glass includes:

[0027] Grab the canopy glass and move it to a first position; when the canopy glass is in the first position, the milling part is located on one side of the boss to be milled, and the edge of the canopy glass is spaced apart from the follower wheel;

[0028] The canopy glass is moved toward the follower wheel, so that the canopy glass moves from the first position to the second position; when the canopy glass is in the second position, the canopy glass abuts against the wheel surface of the follower wheel.

[0029] In one embodiment, the distance between the first position and the second position is greater than the absolute value of the curvature tolerance fluctuation of the canopy glass.

[0030] In one embodiment, when there is a gap between the edge of the canopy glass and the follower wheel, the gap between the edge of the canopy glass and the wheel surface of the follower wheel is 3mm to 7mm.

[0031] In one embodiment, the alignment step and the milling step are repeated.

[0032] When the aforementioned milling mechanism, milling device, and milling method are used to mill the boss of a panoramic sunroof, the follower wheel first abuts against the edge of the sunroof glass, and the workpiece is located on one side of the boss to be milled. Then, the workpiece moves from one side of the boss relative to the edge to the other side of the boss, and the follower wheel rotates synchronously, thereby achieving the milling treatment of the top of the boss. On the one hand, since the rotation axis of the follower wheel is perpendicular to the rotation axis of the workpiece, when the follower wheel abuts against the edge of the sunroof glass, it can correct and guide the workpiece, so that the rotation axis of the workpiece is parallel to the normal of the boss, and the top surface of the boss after milling is correspondingly parallel to the edge of the sunroof glass. On the other hand, since the wheel surface of the follower wheel and the end face of the workpiece away from the motor are provided with a preset distance in the axial direction along the rotation axis, the distance between the top surface of the boss after cutting and the edge of the sunroof glass is the preset distance, thereby enabling precise control and adjustment of the height position of the top surface of the boss. Attached Figure Description

[0033] Figure 1 This is a structural diagram of a panoramic sunroof according to an embodiment of the related technology.

[0034] Figure 2 for Figure 1 The structure shown is a cross-sectional view at point AA.

[0035] Figure 3 This is a structural diagram of a milling apparatus according to an embodiment of this application.

[0036] Figure 4 for Figure 3 The cross-sectional view of the structure shown.

[0037] Figure 5 for Figure 4 Enlarged structural diagram at point B.

[0038] Figure 6 for Figure 4 Enlarged structural diagram at point C.

[0039] Figure 7 This is a view of the milling mechanism according to an embodiment of this application when calibrated using a correction block.

[0040] Figure 8 for Figure 7 Another structural diagram of the structure shown.

[0041] Figure 9 for Figure 8 Enlarged structural diagram at point D.

[0042] 11. Skylight glass; 12. Metal base plate; 13. Edge banding; 131. Boss; 132. Reference surface; 20. Milling mechanism; 211. Fixed base; 212. Motor; 2121. Rotating shaft; 2122. Mounting hole; 213. Milled part; 214. Follower wheel; 2141. Groove; 215. First locking element; 216. Bracket; 217. Adjusting pad; 218. Correction block; 2181. First abutment surface; 2182. Second abutment surface; 22. Mounting bracket; 23. Floating mechanism; 231. Cylinder; 232. Precision pressure regulating valve; 24. Guide mechanism; 241. Guide rail; 242. Sliding element; 25. Connecting seat; 26. Buffer element; 27. Swing joint; 30. Robot arm; 40. Fixture; 50. Frame. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] This application uses a panoramic sunroof as a specific example, but it is not limited to this. Please refer to [link / reference needed]. Figure 1 and Figure 2 The panoramic sunroof includes a skylight glass 11, a metal base plate 12, an integrally injection-molded edging 13 between the skylight glass 11 and the metal base plate 12, and an antenna cover plate mounted on the edging 13. The surface of the edging 13 has multiple protrusions 131, and the antenna cover plate is mounted on the protrusions 131. The top surface of the protrusion 131 serves as a reference surface 132 for mounting the antenna cover plate. The distance S between the reference surface 132 and the surface of the skylight glass 11 affects the height of the top surface of the antenna cover plate relative to the surface of the skylight glass 11.

[0045] In related technologies, the cavity dimensions of the molding die are typically adjusted and controlled to adjust and control the distance S between the reference surface 132 and the surface of the canopy glass 11. However, the metal base plate 12 is usually formed by stamping, and the deformation amount of different batches of stamped metal base plates 12 is different. The different deformation amounts will lead to different shrinkage rates of the metal base plate 12, that is, the shrinkage rate of different batches of metal base plates 12 will fluctuate, resulting in a mismatch between the shrinkage rates of the metal base plate 12 and the canopy glass 11. When the mold is opened, the edge 13 will cool, and the height position of the top surface of the boss 131 will change due to the mismatch between the shrinkage rates of the metal base plate 12 and the canopy glass 11, that is, the distance S will not match the theoretical value. This will result in a mismatch between the height of the edge of the installed antenna cover and the surface of the canopy glass 11, forming a height difference that cannot meet customer requirements.

[0046] Based on this, this application provides a milling mechanism 20 and a milling device, which can improve the material processing accuracy. Specifically, it is a technical solution that can accurately control and adjust the distance between the top surface of the boss 131 and the edge of the canopy glass 11.

[0047] See Figures 3 to 6 , Figure 3 A structural diagram of a milling apparatus according to an embodiment of this application is shown. An embodiment of this application provides a milling mechanism 20, which includes a fixed base 211, a motor 212, a milling piece 213, and a follower wheel 214. The motor 212 is mounted on the fixed base 211. The milling piece 213 is connected to the rotating shaft 2121 of the motor 212, and the motor 212 drives the milling piece 213 to rotate. The follower wheel 214 is rotatably mounted on the fixed base 211, and is spaced apart from the milling piece 213. The wheel surface of the follower wheel 214 and the end face of the milling piece 213 facing away from the motor 212 are provided with a predetermined distance along the axial direction of the rotating shaft 2121. The rotation axis Z2 of the follower wheel 214 is perpendicular to the rotation axis Z1 of the milling piece 213.

[0048] It should be noted that the preset spacing, such as Figure 5 As shown by L, the settings can be flexibly adjusted and set according to the actual needs of the material, as long as the height and position of the cutting surface can be accurately adjusted and controlled. Specifically, when the material is, for example, a panoramic sunroof, the preset spacing can be set according to the thickness of the antenna cover. Optionally, the preset spacing is equal to the thickness of the antenna cover. Thus, after the milling mechanism 20 mills the boss 131 on the edge 13, the distance between the reference surface 132 of the boss 131 and the glass edge along the thickness direction of the skylight glass 11 is the preset spacing, which is equal to the thickness of the antenna cover.

[0049] When the milling mechanism 20 described above is used to mill the boss 131 of the panoramic sunroof, the follower wheel 214 first abuts against the edge of the skylight glass 11, the milling part 213 is located on one side of the boss 131 to be milled, and then the milling part 213 is moved from one side of the boss 131 relative to the edge 13 to the other side of the boss 131, and the follower wheel 214 rotates synchronously, thereby realizing the milling process on the top of the boss 131. On the one hand, since the rotation axis Z2 of the follower wheel 214 is perpendicular to the rotation axis Z1 of the milling part 213, when the follower wheel 214 abuts against the edge of the skylight glass 11, it can correct and guide the milling part 213, so that the rotation axis Z1 of the milling part 213 is parallel to the normal of the boss 131, and the top surface of the boss 131 after milling is correspondingly parallel to the edge of the skylight glass 11. On the other hand, since the wheel surface of the follower wheel 214 and the end face of the milling part 213 away from the motor 212 are provided with a preset distance in the axial direction along the rotating shaft 2121, the distance between the top surface of the boss 131 after cutting and the edge of the skylight glass 11 is a preset distance, so that the height position of the top surface of the boss 131 can be accurately controlled and adjusted.

[0050] Therefore, the boss 131 is milled by the milling mechanism 20 to obtain a new reference surface 132, the height of which meets the user's requirements. After the antenna cover is installed on the reference surface 132, the edge of the glass is flush with the top surface of the antenna cover, meeting customer requirements, improving product quality, and reducing the defect rate.

[0051] For example, the milling part 213 includes, but is not limited to, milling cutters, rods, etc. The specific part can be flexibly adjusted and set according to actual needs, as long as it can cut the boss 131 when driven to rotate at high speed by the motor 212.

[0052] Please see Figure 5 and Figure 6 In one embodiment, the milling component 213 is adjustablely positioned on the rotating shaft 2121 along its axial direction. And / or, the follower wheel 214 is adjustablely positioned on the fixed base 211 along its axial direction parallel to the rotating shaft 2121. Thus, by adjusting the position of the milling component 213 along the axial direction of the rotating shaft 2121, or by adjusting the position of the follower wheel 214, the size of the preset spacing can be adjusted, ensuring that the preset spacing meets requirements with high precision, thereby adapting to the installation of antenna covers of different thicknesses. Furthermore, when the position of the milling component 213 along the axial direction of the rotating shaft 2121 is adjustable, and the position of the follower wheel 214 along its axial direction parallel to the rotating shaft 2121 is also adjustable, more precise and flexible control and adjustment of the preset spacing can be achieved.

[0053] For example, the rotating shaft 2121 is provided with a mounting hole 2122. The mounting hole 2122 extends from the end face of the rotating shaft 2121 along the axial direction of the rotating shaft 2121 into the interior of the rotating shaft 2121. The milling part 213 is adjustablely inserted into the mounting hole 2122 along the axial direction of the rotating shaft 2121. The milling mechanism 20 also includes a first locking member 215 connected to the rotating shaft 2121. When the milling part 213 is adjusted to the target position, the first locking member 215 can lock and fix the milling part 213 to the rotating shaft 2121. Thus, when it is necessary to adjust the preset distance, the first locking member 215 is released, the depth of the milling part 213 extending into the mounting hole 2122 is adjusted, so that the preset distance is adjusted to the target value, and then the first locking member 215 locks and fixes the milling part 213 to the rotating shaft 2121, thereby realizing the adjustment of the preset distance.

[0054] For example, the first locking element 215 may include, but is not limited to, a locking nut, a pin, or a snap-fit, etc., and can be flexibly adjusted and set according to actual needs.

[0055] It should be noted that the follower wheel 214 can be directly rotatably mounted on the fixed base 211 or indirectly rotatably mounted on the fixed base 211, and can be flexibly adjusted and set according to actual needs. In this embodiment, the follower wheel 214 being indirectly mounted on the fixed base 211 is taken as an example.

[0056] Please see Figure 5 and Figure 6 For example, the milling mechanism 20 also includes a bracket 216 and an adjusting shim 217. The bracket 216 is detachably mounted on the fixed base 211, the adjusting shim 217 is detachably mounted between the bracket 216 and the fixed base 211, and the follower wheel 214 is rotatably mounted on the bracket 216. That is, the follower wheel 214 is indirectly mounted on the fixed base 211. In addition, since both the bracket 216 and the adjusting shim 217 are detachable, the number and / or thickness of the adjusting shim 217 can be flexibly adjusted according to actual needs. When the number and / or thickness of the adjusting shim 217 are adjusted, the position of the follower wheel 214 along the axial direction of the rotating shaft 2121 can be adjusted accordingly, thereby achieving the adjustment of the preset spacing. In addition, compared with the first locking member 215 locking and fixing the milling member 213 in the aforementioned embodiment, the thickness of the adjusting shim 217 can be precisely adjusted and controlled with relatively smaller errors, thereby improving the adjustment accuracy of the height position of the follower wheel 214 and thus enabling precise adjustment of the preset distance.

[0057] Specifically, when a thicker adjusting pad 217 is selected for installation, or the number of adjusting pads 217 is increased, the preset spacing can be increased accordingly; conversely, when a thinner adjusting pad 217 is selected for installation, or the number of adjusting pads 217 is reduced, the preset spacing can be decreased accordingly.

[0058] Optionally, the adjusting pad 217 may include, but is not limited to, a shim or a block.

[0059] Optionally, the milling mechanism 20 also includes a second locking element. Both the bracket 216 and the adjusting pad 217 are connected to the fixed base 211 via the second locking element. The second locking element includes, but is not limited to, screws, bolts, pins, or snap-fit ​​components. The number of second locking elements includes, but is not limited to, one or more, which can be selected according to actual needs.

[0060] Please see Figure 5 and Figure 6 Because the milling part 213 has an offset error along the axial direction of the rotating shaft 2121 during the process of locking and fixing the milling part 213 to the rotating shaft 2121 by the first locking member 215, the adjustment of the preset distance will have an error. Based on this, in a specific embodiment, the milling mechanism 20 includes both the first locking member 215 in the above embodiment and the adjusting pad 217 in the above embodiment. When it is necessary to adjust the preset distance to the target value, first loosen the first locking member 215, adjust the position of the milling member 213 along the axial direction of the rotating shaft 2121, and after the position of the milling member 213 is adjusted to the correct position, lock the milling member 213 with the first locking member 215 to achieve the initial adjustment of the preset distance, which has a high adjustment efficiency; then check whether the preset distance has been adjusted to the target value; when the preset distance has not been adjusted to the target value, the adjustment value of the adjusting shim 217 can be obtained according to the difference between the preset distance and the target value, and the position of the follower wheel 214 can be finely adjusted according to the adjustment value, such as adjusting the number and / or thickness of the adjusting shims, so that the preset distance can be accurately adjusted to the target value.

[0061] Please see Figures 7 to 9For example, the milling mechanism 20 also includes a correction block 218. The correction block 218 has a first abutment surface 2181 and a second abutment surface 2182. The first abutment surface 2181 and the second abutment surface 2182 are parallel to each other and have a correction gap. The first abutment surface 2181 is used to abut against the wheel surface of the follower wheel 214, and the second abutment surface 2182 is used to abut against the end face of the milling workpiece 213 opposite to the motor 212. Thus, a correction block 218 with a correction gap that meets the requirements can be selected to correct the preset gap, thereby ensuring that the preset gap meets the requirements. Specifically, when it is necessary to correct the preset spacing, for example, the first contact surface 2181 is made to contact the wheel surface of the follower wheel 214, and it is determined whether the end face of the milling part 213 is synchronously contacted with the second contact surface 2182. If the end face of the milling part 213 is synchronously contacted with the second contact surface 2182, it indicates that the position of the end face of the milling part 213 meets the requirements. If there is a deviation between the end face of the milling part 213 and the second contact surface 2182, the position of the milling part 213 and / or the follower wheel 214 is adjusted according to the deviation value so that the end face of the milling part 213 is contacted with the second contact surface 2182, thereby realizing the correction of the preset spacing.

[0062] Please see Figure 5 , Figure 6 and Figure 9 For example, the milling mechanism 20 also includes a mounting bracket 22 and a floating mechanism 23. The fixed seat 211 is connected to the mounting bracket 22 via the floating mechanism 23. Thus, when the edge of the skylight glass 11 approaches and abuts the wheel surface of the follower wheel 214, the floating mechanism 23 can adaptively float up and down, thereby preventing the skylight glass 11 from making hard contact with the wheel surface of the follower wheel 214, which could damage the skylight glass 11 or cause deformation of the skylight glass 11. It can also prevent the skylight glass 11 from falling off the clamp 40 due to excessive force from the follower wheel 214.

[0063] Specifically, when the milling mechanism 20 is stationary and the fixture 40 clamps the canopy glass 11 from bottom to top and approaches the wheel surface of the follower wheel 214, during the process of the canopy glass 11 moving from bottom to top and abutting the wheel surface of the follower wheel 214, due to the floating mechanism 23, the follower wheel 214 and the milling part 213 can be driven to move upward as a whole. This ensures that the impact force on the canopy glass 11 from the follower wheel is always very small, so that the canopy glass 11 will not be deformed or damaged or fall off the fixture 40. This is conducive to accurately adjusting and controlling the distance between the edge of the canopy glass 11 and the top surface of the boss 131 after milling.

[0064] Please see Figure 5 , Figure 6 and Figure 9For example, the milling mechanism 20 also includes a guide mechanism 24. The fixed seat 211 is also connected to the mounting bracket 22 via the guide mechanism 24, which is used to move the fixed seat 211 in an axial direction parallel to the rotating shaft 2121. Thus, on the one hand, when the edge of the skylight glass 11 approaches and abuts the wheel surface of the follower wheel 214, the guide mechanism 24 guides the lifting and lowering movement of the fixed seat 211, causing the fixed seat 211 to float in an axial direction parallel to the rotating shaft 2121; on the other hand, when the milling part 213 mills the top of the boss 131 in a direction parallel to the edge of the skylight glass 11, the milling part 213 is only subjected to lateral force, while the milling mechanism 20 is rigid in the lateral direction, so it will not cause the milling mechanism 20 to move in the vertical direction, thereby ensuring the accuracy of the top surface position of the boss 131 after milling.

[0065] For example, the guiding mechanism 24 includes a guide rail 241 and a slider 242 slidably disposed on the guide rail 241. The guide rail 241 is connected to the mounting bracket 22, and the slider 242 is connected to the fixed base 211. Thus, when the slider 242 moves along the guide rail 241, it can guide the fixed base 211, thereby allowing the fixed base 211 and its follower wheel 214 and milling part 213 to adaptively float up and down as a whole when subjected to the abutment of the skylight glass 11.

[0066] It should be noted that the floating mechanism 23 includes, but is not limited to, a cylinder 231 or an elastic element, etc., and can be flexibly adjusted and set according to actual needs.

[0067] For example, the floating mechanism 23 includes a cylinder 231 and a precision pressure regulating valve 232. The fixed base 211 is connected to the mounting bracket 22 via the cylinder 231, and the precision pressure regulating valve 232 can adjust the internal air pressure of the cylinder 231. Thus, the precision pressure regulating valve 232 can adjust the pressure and flow rate of the compressed air entering the cylinder 231, thereby achieving precise adjustment of the lifting force of the cylinder 231. This balances the lifting force with the gravity of components such as the fixed base 211, the follower wheel 214, and the milled part 213 connected below the cylinder 231, allowing the follower wheel 214 to float up and down under load. Furthermore, compared to elastic components, the lifting force of the cylinder 231 can be flexibly adjusted and set according to actual needs, adapting to more application scenarios and ensuring long-term normal use without deformation or failure.

[0068] Specifically, before the milling step of the protrusion, when the canopy glass 11 held by the fixture 40 moves upward to abut the wheel surface of the follower wheel 214, the wheel surface of the follower wheel 214 is subjected to the reaction force of the edge of the canopy glass 11 and transmitted to the cylinder 231 through the fixed seat 211. This disrupts the balance between the lifting force of the cylinder 231 and gravity, causing the follower wheel 214, the fixed seat 211, and the milling part 213 to float upward together. In addition, the surface of the canopy glass 11 inevitably has a process deviation of, for example, ±1mm to ±2mm due to manufacturing process errors. During the side milling step of the milling part 213 on the protrusion 131, since a floating mechanism 23 is provided, the follower wheel 214 can float up and down by ±1mm to ±2mm when it moves along the surface of the canopy glass 11, thereby making the milling work of the protrusion 131 stable and reliable. In addition, when the clamp 40 moves the canopy glass 11 downward away from the follower wheel 214, the lifting force of the cylinder 231 will be rebalanced with the gravity of the components such as the fixed seat 211, follower wheel 214 and milling part 213 connected below the cylinder 231. The follower wheel 214, fixed seat 211 and milling part 213 will move downward and reset under the action of gravity.

[0069] Different batches of skylight glass 11 have different curvature deviations, and different parts of the same skylight glass 11 have different curvature deviations. As a result, before the edge of the skylight glass 11 contacts the wheel surface of the follower wheel 214, the wheel surface of the follower wheel 214 is tilted to a certain extent relative to the edge of the skylight glass 11. The tilting range is, for example, 1°, 3°, 5° or 10°, etc.

[0070] For example, the milling mechanism 20 also includes a connecting seat 25 and a buffer member 26. The fixed seat 211 is pivotally mounted on the connecting seat 25, and the rotation axis Z2 of the follower wheel 214 and the rotation axis Z1 of the milling part 213 are both perpendicular to the pivot axis O of the fixed seat 211. Figure 4 or Figure 5 Taking the shown perspective as an example, the direction of the swing axis O is perpendicular to the computer screen. The buffer 26 is positioned between the fixed base 211 and the connecting base 25, and is located on the side of the swing axis O. Thus, when the edge of the skylight 11 moves upward to abut the surface of the follower wheel 214, if the surface of the follower wheel 214 is tilted relative to the edge of the skylight 11, the skylight 11 will cause the follower wheel 214 and the fixed base 211 to swing relative to the connecting base 25 to adjust their positions. This ensures that the rotation axis Z2 of the follower wheel 214 is parallel to the edge of the skylight 11, thereby ensuring that the milled surface of the top of the boss 131 is parallel to the edge of the skylight 11 after milling. Furthermore, it can adapt to efficient milling of bosses 131 in different parts of the same skylight 11, and also to efficient milling of bosses 131 in different batches of skylight 11.

[0071] In this embodiment, the fixed base 211 has only one swing axis O, meaning that the fixed base 211 swings relative to the connecting base 25 only around one swing axis O. This results in relatively high stability. Of course, the fixed base 211 can also have multiple swing axes O, such as two, three, or more, which can be flexibly adjusted and set according to actual needs. When there are multiple swing axes O, they are arranged parallel to each other, allowing for more flexible adjustment of the position of the fixed base 211.

[0072] Furthermore, the swing angle of the fixed base 211 is determined based on the amount of deformation caused by the pressure on the wheel surface of the follower wheel 214 compressing the buffer member 26. When the tilt angle of the wheel surface of the follower wheel 214 relative to the edge of the skylight glass 11 is large, the pressure on the wheel surface of the follower wheel 214 compresses the buffer member 26, resulting in a larger deformation, and the swing angle of the fixed base 211 is correspondingly larger; conversely, when the tilt angle of the wheel surface of the follower wheel 214 relative to the edge of the skylight glass 11 is small, the pressure on the wheel surface of the follower wheel 214 compresses the buffer member 26, resulting in a smaller deformation, and the swing angle of the fixed base 211 is correspondingly smaller.

[0073] In addition, since the rotation axis Z2 of the follower wheel 214 and the rotation axis Z1 of the milling part 213 are both perpendicular to the swing axis O of the fixed seat 211, the follower wheel 214 will not swing when the milling part 213 mills the boss 131 laterally, so that the milling action of the boss 131 is stable and reliable.

[0074] For example, the milling mechanism 20 also includes a swing joint 27 disposed between the connecting seat 25 and the fixed seat 211, the fixed seat 211 being rotatably connected to the connecting seat 25 via the swing joint 27.

[0075] Optionally, the swing joint 27 may include, but is not limited to, a swing joint 27 that is unidirectionally swingable.

[0076] For example, the buffer 26 is a buffer block or a buffer spring; and / or, there are two buffers 26, which are located on opposite sides of the swing axis O.

[0077] For example, the follower wheel 214 has a groove 2141 formed on its surface, which is arranged circumferentially around the surface of the follower wheel 214. Alternatively, the surface of the follower wheel 214 may also have two ribs spaced apart along the axial direction, each rib arranged circumferentially around the surface of the follower wheel 214. Thus, when the clamp 40 drives the edge of the skylight glass 11 to abut against the surface of the follower wheel 214, because the surface of the follower wheel 214 has a certain width along the axial direction, designing the groove 2141 on the surface of the follower wheel 214, or providing ribs on the surface of the follower wheel 214, can prevent the curvature fluctuations of the glass in parts other than the edge of the skylight glass 11 from affecting the contact and adhesion between the follower wheel 214 and the skylight glass 11, thereby improving the product processing quality.

[0078] Based on the aforementioned embodiment, the connecting seat 25, the buffer 26, and the swing joint 27 are disposed between the floating mechanism 23 and the fixed seat 211. Specifically, the connecting seat 25 is connected to the cylinder 231, and the connecting seat 25 is also connected to the guide mechanism 24, and specifically connected and fixed to the sliding member 242. In this way, when the follower wheel 214 abuts against the edge of the skylight glass 11, it can not only float up and down according to the actual situation, but also swing adaptively, thereby realizing that the wheel surface of the follower wheel 214 abuts against the edge of the skylight glass 11, which can prevent the skylight glass 11 from being deformed and damaged, and can improve the milling accuracy of the top surface of the boss 131.

[0079] Please see Figures 3 to 6 In one embodiment, this application also provides a milling apparatus, which includes the milling mechanism 20 of any of the above embodiments.

[0080] When the milling device described above is used to mill the boss 131 of the panoramic sunroof, the follower wheel 214 first abuts against the edge of the skylight glass 11, the milling part 213 is located on one side of the boss 131 to be milled, and then the milling part 213 is moved from one side of the boss 131 relative to the edge 13 to the other side of the boss 131, and the follower wheel 214 rotates synchronously, thereby realizing the milling process on the top of the boss 131. On the one hand, since the rotation axis Z2 of the follower wheel 214 is perpendicular to the rotation axis of the milling part 213, when the follower wheel 214 abuts against the edge of the skylight glass 11, it can correct and guide the milling part 213, so that the rotation axis Z1 of the milling part 213 is parallel to the normal of the boss 131, and the top surface of the boss 131 after milling is correspondingly parallel to the edge of the skylight glass 11. On the other hand, since the wheel surface of the follower wheel 214 and the end face of the milling part 213 away from the motor 212 are provided with a preset distance in the axial direction along the rotating shaft 2121, the distance between the top surface of the boss 131 after cutting and the edge of the skylight glass 11 is a preset distance, so that the height position of the top surface of the boss 131 can be accurately controlled and adjusted.

[0081] Please see Figures 3 to 6 For example, the milling apparatus also includes a robot arm 30 and a clamp 40. The robot arm 30 is connected to the clamp 40, which can hold the material to be milled. The robot arm 30 can drive the clamp 40 from the loading station to the milling station. In addition, the milling apparatus also includes a frame 50. The milling mechanism 20 is mounted on the frame 50. Specifically, the mounting base 211 is mounted on the frame 50. More specifically, the mounting bracket 22 is fixedly mounted on the frame 50, and the mounting base 211 is indirectly mounted on the frame 50.

[0082] Please see Figures 3 to 6 In one embodiment, this application also provides a milling method employing the milling apparatus of any of the above embodiments, comprising:

[0083] In the alignment step, the position of the skylight glass is moved and adjusted so that the follower wheel abuts against the edge of the skylight glass, and the milling part is located on one side of the boss to be milled.

[0084] In the milling step, the milling part 213 is driven to rotate at high speed, and the milling part 213 is moved from one side of the boss relative to the edge 13 to the other side of the boss 131 to mill the top of the boss 131; wherein, during the movement of the milling part 213, the follower wheel 214 rotates synchronously along the edge of the skylight glass 11 to guide the movement of the milling part 213.

[0085] The above-described milling method has two advantages. First, since the rotation axis Z2 of the follower wheel 214 is perpendicular to the rotation axis Z1 of the milling part 213, the milling part 213 can be corrected and guided when the follower wheel 214 comes into contact with the edge of the skylight glass 11. This makes the rotation axis Z1 of the milling part 213 parallel to the normal of the boss 131, and the top surface of the boss 131 after milling is correspondingly parallel to the edge of the skylight glass 11. Second, since the wheel surface of the follower wheel 214 and the end face of the milling part 213 away from the motor 212 are provided with a preset distance in the axial direction along the rotating shaft 2121, the distance between the top surface of the boss 131 after cutting and the edge of the skylight glass 11 is a preset distance, thereby enabling precise control and adjustment of the height position of the top surface of the boss 131.

[0086] Please see Figures 3 to 6 Based on the aforementioned embodiments, the step of moving and adjusting the position of the canopy glass 11 so that the follower wheel 214 abuts against the edge of the canopy glass 11 includes:

[0087] Grab the canopy glass 11 and move the canopy glass 11 to the first position; when the canopy glass 11 is in the first position, the milling part 213 is located on one side of the boss 131 to be milled, and there is a gap between the edge of the canopy glass 11 and the follower wheel 214.

[0088] Move the skylight glass 11 toward the direction of the follower wheel 214, so that the skylight glass 11 moves from the first position to the second position; when the skylight glass 11 is in the second position, the skylight glass 11 abuts against the wheel surface of the follower wheel 214.

[0089] Please see Figures 3 to 6 As a specific example, the milling method for the milling device to mill the boss 131 on the canopy glass 11 includes the following steps:

[0090] In step S100, the gripper 40 of the robotic arm 30 picks up the canopy glass 11 and moves the canopy glass 11 to the first position according to the program built into the robotic arm 30. When the canopy glass 11 is in the first position, the milling part 213 is located on one side of the boss 131 to be milled, and the edge of the canopy glass 11 does not abut against the follower wheel 214, that is, there is a gap.

[0091] In step S100, optionally, the distance between the edge of the canopy glass 11 and the wheel surface of the follower wheel 214 is, for example, 3mm to 7mm, specifically, 3mm, 5mm or 7mm, etc.

[0092] Since there is a gap between the edge of the canopy glass 11 and the wheel surface of the follower wheel 214, and they do not come into contact, the position adjustment accuracy of the canopy glass 11 is lower than that of the edge of the canopy glass 11, which moves directly to the position where it comes into contact with the wheel surface of the follower wheel 214. The canopy glass 11 can be quickly moved to the milling station by the robot arm 30.

[0093] In step S200, the robotic arm 30 causes the canopy glass 11 to move upward and abut against the wheel surface of the follower wheel 214, that is, the canopy glass 11 moves from the first position to the second position, thereby realizing the abutment and positioning of the edge of the canopy glass 11 against the wheel surface of the follower wheel 214.

[0094] In step S200, the follower wheel 214 receives the reaction force from the canopy glass 11 and transmits it to the cylinder 231, causing it to float upwards as a whole with the milling part 213 and the fixed base 211. The distance between the first and second positions is the distance the follower wheel 214 floats upwards from its initial position. Optionally, the distance between the first and second positions is greater than the absolute value of the curvature tolerance fluctuation of the canopy glass 11. Thus, during the milling of the boss 131, when the follower wheel 214 moves up and down along the surface of the canopy glass 11 due to the curvature tolerance, it always remains in contact with the glass, ensuring accurate and reliable milling height of the boss 131.

[0095] In addition, after the edge of the skylight glass 11 is positioned by contact with the wheel surface of the follower wheel 214, the distance between the end face of the milled part 213 and the wheel surface of the follower wheel 214 is a preset distance, which ensures that the distance between the top surface of the milled boss 131 and the edge of the skylight glass 11 is a preset distance.

[0096] In step S300, the robotic arm 30 drives the canopy glass 11 to move, so that the milling part 213 moves from one side of the boss 131 to the other side of the boss 131 to realize the milling action on the boss 131.

[0097] In step S300, the robot arm 30 grabs the canopy glass 11 and moves it from one side of the boss 131 to the other side. The follower wheel 214 is always in close contact with the surface of the canopy glass 11 and rolls a certain distance. At this time, the high-speed rotating milling cutter follows the movement trajectory of the follower wheel 214, cuts into the boss 131 from one side and leaves the boss 131 from the other side to complete the milling action.

[0098] Step S400: Repeat steps S100 to S300.

[0099] Because the milling cutter is only subjected to lateral force during milling, and the milling mechanism 20 is rigid in the direction of the lateral force, it does not cause vertical movement of the milling mechanism 20, thus ensuring that the distance between the edge of the glass canopy and the top surface of the boss 131 is precisely controllable. After each boss 131 is cut, the robot arm 30 moves the follower wheel 214 away from the surface of the canopy glass 11 to the position of the next boss 131, and the cutting is repeated in the same way until all bosses 131 are machined.

[0100] The distance between the end face of the milled part 213 and the edge of the canopy glass 11 is the distance from the end face of the milled part 213 to the wheel surface of the follower wheel 214. Each boss 131 exceeding the constant height is milled to keep the distance between the top surface of the boss 131 and the edge of the canopy glass 11 constant. This serves as the height positioning reference for bonding and installing the antenna cover, so that the antenna cover is flush with the edge of the canopy glass 11 after installation to meet customer requirements.

[0101] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0102] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A milling mechanism, characterized in that, include: Fixed base; An electric motor, which is mounted on the fixed base; A milled part, wherein the milled part is connected to the rotating shaft of the motor, and the motor is used to drive the milled part to rotate; A follower wheel is rotatably mounted on the fixed base. The follower wheel is spaced apart from the milling workpiece. The wheel surface of the follower wheel and the end face of the milling workpiece opposite to the motor are provided with a preset distance along the axial direction of the rotating shaft. The rotation axis of the follower wheel is perpendicular to the rotation axis of the milling workpiece. The correction block has a first abutting surface and a second abutting surface. The first abutting surface and the second abutting surface are parallel to each other and have a correction gap. The first abutting surface is used to abut against the wheel surface of the follower wheel, and the second abutting surface is used to abut against the end face of the milling part opposite to the motor.

2. The milling mechanism according to claim 1, characterized in that, The milling mechanism also includes a mounting frame and a floating mechanism; the fixed base is connected to the mounting frame through the floating mechanism.

3. The milling mechanism according to claim 2, characterized in that, The milling mechanism further includes a guiding mechanism; the fixed seat is also connected to the mounting bracket through the guiding mechanism, and the guiding mechanism is used to make the fixed seat move in an axial direction parallel to the rotating shaft.

4. The milling mechanism according to claim 3, characterized in that, The guiding mechanism includes a guide rail and a sliding member slidably disposed on the guide rail. The guide rail is connected to the mounting bracket, and the sliding member is connected to the fixed base.

5. The milling mechanism according to claim 2, characterized in that, The floating mechanism includes a cylinder and a precision pressure regulating valve. The fixed base is connected to the mounting bracket through the cylinder. The precision pressure regulating valve can adjust the internal air pressure of the cylinder.

6. The milling mechanism according to claim 1, characterized in that, The milling mechanism further includes a connecting seat and a buffer. The fixed seat is swayably mounted on the connecting seat. The rotation axis of the follower wheel and the rotation axis of the milling part are both perpendicular to the swing axis of the fixed seat. The buffer is disposed between the fixed seat and the connecting seat and is located on the side of the swing axis.

7. The milling mechanism according to claim 6, characterized in that, The milling mechanism further includes a swing joint disposed between the connecting seat and the fixed seat, and the fixed seat is rotatably connected to the connecting seat through the swing joint.

8. The milling mechanism according to claim 7, characterized in that, The buffer is a buffer block or a buffer spring; and / or, there are two buffers, which are located on opposite sides of the swing axis.

9. The milling mechanism according to claim 7, characterized in that, The follower wheel has a groove formed on its surface, and the groove is arranged circumferentially around the surface of the follower wheel; or, the follower wheel has two ribs arranged axially at intervals on its surface, and each rib is arranged circumferentially around the surface of the follower wheel.

10. The milling mechanism according to claim 1, characterized in that, The milling part is adjustablely positioned on the rotating shaft along the axial direction of the rotating shaft; and / or, the follower wheel is adjustablely positioned on the fixed base along the axial direction parallel to the rotating shaft.

11. The milling mechanism according to claim 10, characterized in that, The rotating shaft is provided with a mounting hole that extends from the end face of the rotating shaft along the axial direction to the interior of the rotating shaft. The milling part is adjustablely inserted into the mounting hole along the axial direction of the rotating shaft. The milling mechanism also includes a first locking member connected to the rotating shaft. When the milling part is adjusted to the target position, the first locking member can lock and fix the milling part to the rotating shaft.

12. The milling mechanism according to claim 10, characterized in that, The milling mechanism further includes a bracket and an adjusting pad. The bracket is detachably mounted on the fixed base, and the adjusting pad is detachably mounted between the bracket and the fixed base. The follower wheel is rotatably mounted on the bracket.

13. A milling apparatus, characterized in that, The milling apparatus includes the milling mechanism as described in any one of claims 1 to 12.

14. The milling apparatus according to claim 13, characterized in that, The milling device also includes a robot arm, a fixture, and a frame. The robot arm is connected to the fixture, which can hold the material to be milled. The robot arm can drive the fixture from the loading station to the milling station. The milling mechanism is mounted on the frame.

15. A milling method employing the milling apparatus as described in claim 13 or 14, characterized in that, include: In the alignment step, the position of the canopy glass is moved and adjusted so that the follower wheel abuts against the edge of the canopy glass, and the milling part is located on one side of the boss to be milled; In the milling step, the milling part is driven to rotate at high speed, and the milling part is moved from one side of the boss relative to the edge to the other side of the boss to mill the top of the boss; wherein, during the movement of the milling part, the follower wheel rotates synchronously along the edge of the canopy glass to guide the movement of the milling part.

16. The milling method according to claim 15, characterized in that, The step of moving and adjusting the position of the skylight glass so that the follower wheel abuts against the edge of the skylight glass includes: Grab the canopy glass and move it to a first position; when the canopy glass is in the first position, the milling part is located on one side of the boss to be milled, and the edge of the canopy glass is spaced apart from the follower wheel; The canopy glass is moved toward the follower wheel, so that the canopy glass moves from the first position to the second position; when the canopy glass is in the second position, the canopy glass abuts against the wheel surface of the follower wheel.

17. The milling method according to claim 16, characterized in that, The distance between the first position and the second position is greater than the absolute value of the curvature tolerance fluctuation value of the canopy glass.

18. The milling method according to claim 16, characterized in that, When there is a gap between the edge of the canopy glass and the follower wheel, the gap between the edge of the canopy glass and the wheel surface of the follower wheel is 3mm to 7mm.

19. The milling method according to any one of claims 15 to 18, characterized in that, Repeat the alignment step and the milling step.

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