Point polishing device

Abstract

This application relates to a spot polishing device, including a mounting base, a hollow rotating platform fixed in the mounting base, a revolution motor connected to the input shaft hole of the hollow rotating platform, and a rotation support connected to the lower end of the output turntable of the hollow rotating platform. The revolution motor drives the output turntable of the hollow rotating platform to rotate around the revolution axis, causing the rotation support to rotate together around the revolution axis. The spot polishing device also includes a rotation motor coaxially mounted with the revolution axis within the rotation support, a reversing transmission mechanism mounted below the rotation support, and a grinding disc fixed on the rotation shaft at the output end of the reversing transmission mechanism. The reversing transmission mechanism converts the rotation of the rotation motor around the revolution axis into rotation of the rotation shaft around a rotation axis perpendicular to the revolution axis, causing the grinding disc to rotate together while simultaneously revolving around the revolution axis, with the center of the grinding disc in the thickness direction aligned with the revolution axis. The grinding disc of this spot polishing device has a spot-shaped polishing pattern, achieving a high-speed and precise polishing method.

Description

Technical Field

[0001] This application relates to polishing equipment, and more specifically, to a spot polishing apparatus. Background Technology

[0002] Glass covers are widely used on the surfaces of everyday electronic products such as mobile phones, tablets, and smartwatches. The processing of glass covers involves many steps, and scratches and other damage are inevitable during processing. Directly scrapping them is too costly, so polishing is currently the preferred method of repair. Existing glass surface scratch repair methods generally involve manual repair through grinding and polishing processes. The polishing device uses a motor to drive a rotating grinding disc. Because the contact area between the grinding disc and the product is large, it causes over-polishing of areas outside the scratch that do not require polishing. Furthermore, since the grinding disc is driven by a single motor, the polishing speed is slow. Utility Model Content

[0003] The technical problem to be solved by this application is to provide a spot polishing device with a small polishing trajectory and fast polishing speed, in order to address the above-mentioned deficiencies of the prior art.

[0004] The technical solution adopted by this application to solve its technical problem is as follows: a spot polishing device is proposed, which includes a mounting base, a hollow rotating platform fixed in the mounting base, a revolution motor connected to the input shaft hole of the hollow rotating platform, and a rotation support connected to the lower end of the output turntable of the hollow rotating platform. The revolution motor drives the output turntable of the hollow rotating platform to rotate around the revolution axis, thereby driving the rotation support to rotate around the revolution axis together. The spot polishing device also includes a rotation motor coaxially mounted with the revolution axis in the rotation support, a reversing transmission mechanism mounted below the rotation support, and a grinding disc fixed on the rotation shaft at the output end of the reversing transmission mechanism. The reversing transmission mechanism converts the rotation of the rotation motor around the revolution axis into the rotation of the rotation shaft around a rotation axis perpendicular to the revolution axis, thereby driving the grinding disc to rotate around the rotation axis while simultaneously revolving around the revolution axis with the rotation support. The center of the grinding disc in the thickness direction is aligned with the revolution axis.

[0005] According to one embodiment of the spot polishing device described in this application, the spot polishing device further includes a revolution shaft passing through the hollow space of the output turntable of the hollow rotating platform and a conductive slip ring disposed above the mounting base. The upper end of the revolution shaft is provided with a conductive post inserted into the conductive slip ring, and the lower end is fixedly connected to the self-rotation support to supply power to the self-rotation motor through the conductive slip ring.

[0006] According to one embodiment of the spot polishing device described in this application, the rotating support is cylindrical, with a connecting plate at the upper end that is fixedly connected to the output turntable of the hollow rotating platform, and the lower end of the revolution shaft is fixedly connected to the connecting plate to rotate together with the rotating support around the revolution axis.

[0007] In one embodiment of the spot polishing apparatus according to this application, the hollow rotating platform is a right-angled hollow rotating platform, and the input shaft hole provided from the side is connected to the revolution motor.

[0008] According to one embodiment of the spot polishing device described in this application, the reversing transmission mechanism includes a housing fixed to the lower end of the rotation support and a reversing transmission component disposed in the housing. The output end of the reversing transmission component is provided with a rotation shaft extending out of the housing along the rotation axis direction perpendicular to the revolution axis.

[0009] According to one embodiment of the spot polishing device described in this application, the reversing transmission assembly includes a driving bevel gear, a driven bevel gear, and a variable speed spur gear set meshing sequentially. The driving bevel gear is connected to a self-rotating motor and transmits the rotation of the self-rotating motor around the revolution axis to the driven bevel gear, which then transmits the speed through the variable speed spur gear set to the self-rotating shaft, causing the self-rotating shaft to rotate around a self-rotating axis perpendicular to the revolution axis.

[0010] In one embodiment of the spot polishing apparatus according to this application, the polishing disc is disc-shaped and has a thickness of 1-2 mm.

[0011] The spot polishing device of this application has the following beneficial effects: The spot polishing device according to the embodiment of this application adopts a combination of a rotating motor driving a hollow rotating platform to rotate a self-rotating support and a self-rotating motor driving the grinding disc to rotate while rotating with the self-rotating support through a reversing transmission mechanism. The axis of revolution of the grinding disc is perpendicular to the axis of rotation, so that the polishing shape of the grinding disc is dot-shaped, the polishing trajectory is small and uniform, the cutting speed is fast, and a high-speed and precise polishing method is achieved, which is especially suitable for the removal and repair of scratches on the surface of glass, ceramics and other items. Attached Figure Description

[0012] The present application will be further described below with reference to the accompanying drawings and embodiments. In the accompanying drawings:

[0013] Figure 1 This is a schematic diagram of the overall structure of a dot polishing apparatus according to an embodiment of this application;

[0014] Figure 2 yes Figure 1 An exploded view of the spot polishing device shown.

[0015] Figure 3 This is a schematic diagram of the reversing transmission mechanism in one embodiment of this application;

[0016] Figure 4 yes Figure 1 The diagram shows the revolution and rotation axes of the spot polishing device.

[0017] Explanation of reference numerals: 1-Spot polishing device; 10-Mounting base; 11-Mounting plate; 20-Hollow rotary platform; 21-Input shaft hole; 22-Output turntable; 30-Revolution motor; 40-Revolution shaft; 41-Conductive column; 50-Rotation support; 51-Connecting plate; 60-Rotation motor; 70-Reversing transmission mechanism; 71-Box; 72-Reversing transmission assembly; 721-Driving bevel gear; 722-Passive bevel gear; 723-First spur gear; 724-Second spur gear; 725-Third spur gear; 726-Rotation shaft; 80-Grinding disc; 90-Conductive slip ring; 2-First arrow; 3-Second arrow; 4-Revolution axis; 5-Rotation axis. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application. Furthermore, the embodiments and features described herein can be combined with each other unless otherwise specified.

[0019] Figure 1 and Figure 2 The finishing structure and exploded structure schematic diagrams of the dot polishing apparatus 1 according to one embodiment of this application are shown respectively. See also Figure 1 and Figure 2 As shown, the spot polishing device 1 mainly consists of a mounting base 10, a hollow rotating platform 20, a revolution motor 30, a rotation support 50, a rotation motor 60, a reversing transmission mechanism 70, and a grinding disc 80. The mounting base 10 may have a mounting plate 11 on one side for mounting the entire spot polishing device 1 to external equipment such as a robotic arm. The hollow rotating platform 20 is fixed in the mounting base 10 and has an input shaft hole 21 and an output turntable 22. The hollow rotating platform 20 is preferably a right-angled hollow rotating platform, with the input shaft hole 21, located laterally, connected to the revolution motor 30. The rotation support 50 is fixedly connected to the lower end of the output turntable 22 of the hollow rotating platform 20, and the revolution motor 30 drives the output turntable 22 of the hollow rotating platform 20 to rotate around a vertically upward revolution axis 4 (see...). Figure 4The rotation of the self-rotating support 50 causes it to rotate along with the revolution axis 4. Specifically, the self-rotating support 50 is cylindrical, with a connecting plate 51 at the upper end that is fixedly connected to the output turntable 22 of the hollow rotating platform 20. The self-rotating motor 60 is installed coaxially with the revolution axis 4 in the cylindrical space of the self-rotating support 50, that is, the output of the self-rotating motor 60 also rotates around the revolution axis. The reversing transmission mechanism 70 is installed below the self-rotating support 60 and includes a housing 71 fixed to the lower end of the self-rotating support 50 and a reversing transmission assembly 72 disposed in the housing 71. The output end of the reversing transmission assembly 72 is provided with a self-rotating shaft 726 extending laterally out of the housing 71. The reversing transmission assembly 72 converts the rotation of the self-rotating motor 60 around the revolution axis 4 into the rotation of the self-rotating shaft 726 around a transverse self-rotation axis 5 perpendicular to the revolution axis 4. The grinding disc 80 is fixed on the rotating shaft 726, and can then rotate around the rotation axis 5 together with the rotating shaft 726 (e.g., Figure 1 As shown by the first arrow 2 in the middle), it revolves around the revolution axis 4 together with the rotation support 50 (as shown by the first arrow 2 in the middle). Figure 1 (As shown by the second arrow 3 in the middle).

[0020] See also Figure 1 and Figure 2 As shown, the spot polishing device 1 also includes a revolution shaft 40 and a conductive slip ring 90, which work together to supply power to the self-rotating motor 60 inside the self-rotating support 50. See details. Figure 1 and Figure 2 As shown, the revolution shaft 40 passes through the hollow space of the output turntable 22 of the hollow rotating platform 20, and the conductive slip ring 90 is positioned above the mounting base 10, directly opposite the revolution shaft 40. The upper end of the revolution shaft 40 has a conductive post 41 inserted into the conductive slip ring 90, and the lower end is fixedly connected to the connecting plate 51 of the self-rotating support 50. This allows the self-rotating shaft 40 to supply power to the self-rotating motor 60 through the rotational contact between the conductive post 41 and the conductive slip ring 90 while rotating around the revolution axis 4 together with the self-rotating support 50.

[0021] See also Figure 3 As shown, in one specific embodiment of this application, the reversing transmission assembly 72 includes a driving bevel gear 721, a driven bevel gear 722, and a variable-speed spur gear set composed of a first spur gear 723, a second spur gear 724, and a third spur gear 725, which are rotatably mounted in the housing 71 and mesh sequentially. The driving bevel gear 721 is connected to the self-rotating motor 60, transmitting the rotational direction of the self-rotating motor 60 around the revolution axis 4 to the driven bevel gear 722, and then transmitting the speed-changing transmission to the self-rotating shaft 726 via the variable-speed spur gear set composed of the first spur gear 723, the second spur gear 724, and the third spur gear 725, causing the self-rotating shaft 726 to rotate around the self-rotation axis 5 perpendicular to the revolution axis 4. In different embodiments of this application, the variable-speed gear set can also be implemented using other similar speed-changing transmission mechanisms, for example, a synchronous belt can be used instead of spur gears.

[0022] The polishing device 1 according to the embodiment of this application preferably uses a disc-shaped grinding disc 80 with a thickness of 1-2 mm. Furthermore, the grinding disc 80 is fixed on the rotation axis 726 such that the center of the grinding disc 80 in the thickness direction is aligned with the revolution axis 4 (see...). Figure 4 As shown, the grinding disc 80 revolves around the revolution axis 4 while rotating around the rotation axis 5 perpendicular to the revolution axis 4, forming a dotted polishing shape, which can achieve high-speed and precise polishing.

[0023] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A spot polishing device, characterized in that, The spot polishing device includes a mounting base, a hollow rotating platform fixed in the mounting base, a revolution motor connected to the input shaft hole of the hollow rotating platform, and a self-rotating support connected to the lower end of the output turntable of the hollow rotating platform. The revolution motor drives the output turntable of the hollow rotating platform to rotate around the revolution axis, and drives the self-rotating support to rotate around the revolution axis together. The spot polishing device also includes a rotating motor coaxially mounted with the revolution axis within a rotating support, a reversing transmission mechanism mounted below the rotating support, and a grinding disc fixed on a rotating shaft at the output end of the reversing transmission mechanism. The reversing transmission mechanism converts the rotation of the rotating motor around the revolution axis into the rotation of the rotating shaft around a rotation axis perpendicular to the revolution axis, causing the grinding disc to rotate around the rotation axis while simultaneously revolving around the revolution axis with the rotating support. The center of the grinding disc in the thickness direction is aligned with the revolution axis.

2. The spot polishing apparatus according to claim 1, characterized in that, The spot polishing device also includes a revolution shaft passing through the hollow space of the output turntable of the hollow rotating platform and a conductive slip ring set above the mounting base. The upper end of the revolution shaft is provided with a conductive post inserted into the conductive slip ring, and the lower end is fixedly connected to the self-rotation support to supply power to the self-rotation motor through the conductive slip ring.

3. The spot polishing apparatus according to claim 2, characterized in that, The self-rotating support is cylindrical, with a connecting plate at the upper end that is fixedly connected to the output turntable of the hollow rotating platform. The lower end of the revolution shaft is fixedly connected to the connecting plate so that it rotates around the revolution axis together with the self-rotating support.

4. The spot polishing apparatus according to claim 1, characterized in that, The hollow rotating platform is a right-angled hollow rotating platform, with the input shaft hole set from the side connecting to the revolution motor.

5. The spot polishing apparatus according to claim 1, characterized in that, The reversing transmission mechanism includes a housing fixed to the lower end of the rotation support and a reversing transmission assembly disposed within the housing. The output end of the reversing transmission assembly is provided with a rotation shaft extending out of the housing along the rotation axis direction perpendicular to the revolution axis.

6. The spot polishing apparatus according to claim 5, characterized in that, The reversing transmission assembly includes a driving bevel gear, a driven bevel gear, and a variable speed spur gear set that mesh in sequence. The driving bevel gear is connected to the self-rotating motor and transmits the rotation of the self-rotating motor around the revolution axis to the driven bevel gear, which then transmits the speed change to the self-rotating shaft through the variable speed spur gear set, so that the self-rotating shaft rotates around the self-rotating axis that is perpendicular to the revolution axis.

7. The spot polishing apparatus according to claim 1, characterized in that, The grinding disc is in the shape of a disc and has a thickness of 1-2 mm.

Images