Glass ceramic grinding and polishing device and method

Abstract

The invention discloses a grinding and polishing device and method for microcrystalline glass, and belongs to the technical field of polishing devices.The grinding and polishing device comprises a mounting plate, a lifting assembly is arranged on the mounting plate, and a T-shaped plate capable of rotating is arranged on the lifting assembly; the T-shaped plate is provided with a horizontal grinding assembly used for grinding a horizontal workpiece and a clamping assembly used for clamping a vertical workpiece. Adjusting assemblies are symmetrically arranged on the two sides of the mounting plate, each adjusting assembly is provided with a mounting column, a rotating column is rotationally connected between the two mounting columns, and at least two vertical grinding assemblies are mounted on the rotating column through at least two mounting frames. The mounting frame comprises a vertical plate and a transverse plate which are integrally formed with the sliding sleeve, and the transverse plate at the top is provided with a positioning screw. The invention provides the microcrystalline glass grinding and polishing device which can integrate multiple processing modes, is wide in applicability and high in automation degree, and can effectively improve the processing efficiency and the surface quality.

Description

Technical Field

[0001] This invention relates to the field of polishing equipment technology, and in particular to a grinding and polishing apparatus and method for microcrystalline glass. Background Technology

[0002] Microcrystalline glass, also known as glass-ceramic, is a composite material in which a large number of tiny crystalline phases are uniformly precipitated inside a base glass through a specific heat treatment process. Due to its combination of the easy formability of glass and the excellent mechanical, thermal and chemical stability of ceramics, microcrystalline glass is widely used in high-tech fields such as electronic product covers, high-end kitchenware panels, building curtain walls, and aerospace. These applications usually have extremely stringent requirements for the surface flatness, smoothness and dimensional accuracy of microcrystalline glass. Therefore, grinding and polishing are indispensable key processes in its production and manufacturing.

[0003] Traditional grinding and polishing equipment is usually designed for specific sizes or processing methods. For example, large horizontal grinding machines are suitable for large flat workpieces, while vertical machines are used to process small or irregularly shaped workpieces. Manufacturers often need to purchase multiple sets of different types of equipment to meet the production needs of different products, resulting in high equipment investment costs, large floor space, and cumbersome production process switching. Furthermore, for larger microcrystalline glass sheets, the traditional single-sided grinding method requires manual or flipping mechanism to flip the sheet after processing one side before processing the other side. This process is not only time-consuming and labor-intensive, but also easily causes scratches or cracks to the workpiece during handling and flipping, increasing the scrap rate. For small workpieces, although there are double-sided grinding machines, they are often not compatible with the processing of large workpieces. Summary of the Invention

[0004] The purpose of this invention is to provide a microcrystalline glass grinding and polishing device that can integrate multiple processing modes, has wide applicability, high degree of automation, and can effectively improve processing efficiency and surface quality.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a grinding and polishing device for microcrystalline glass, comprising a mounting plate, a lifting assembly provided on the mounting plate, a rotatable T-shaped plate provided on the lifting assembly, and a horizontal grinding assembly for grinding horizontal workpieces and a clamping assembly for clamping vertical workpieces on the T-shaped plate.

[0006] The mounting plate is symmetrically provided with adjustment components on both sides, each adjustment component is provided with a mounting column, and a rotating column is rotatably connected between the two mounting columns. At least two vertical grinding components are mounted on the rotating column through at least two mounting frames.

[0007] The mounting frame includes a vertical plate and a horizontal plate integrally formed with the sliding sleeve, and the top horizontal plate is provided with a positioning screw.

[0008] As a further description of the above technical solution: the lifting assembly includes hydraulic cylinders fixed to the four corners of the top of the mounting plate, and the piston rods of each hydraulic cylinder jointly support the lifting platform;

[0009] A rotary motor is installed at the center of the bottom of the lifting platform, and its output shaft passes through the lifting platform and is fixedly connected to the T-shaped plate.

[0010] As a further description of the above technical solution: the horizontal grinding assembly includes a first telescopic rod fixed to a T-shaped plate, the output end of the first telescopic rod is fixedly connected to a first mounting base, and the first mounting base is equipped with an independent drive motor and a first grinding disc driven by it.

[0011] As a further description of the above technical solution: the clamping assembly includes at least two detachable U-shaped clamps, and each U-shaped clamp has at least four clamping screws with elastic pressure pads at the ends on its two arms.

[0012] As a further description of the above technical solution: the adjustment component includes a cylindrical shell fixed on the mounting plate, a lead screw and a slide rod disposed in the two cylindrical shells, and a servo motor for driving the lead screw;

[0013] The mounting post is connected to the lead screw and slide bar via a threaded slider and a linear bearing.

[0014] As a further description of the above technical solution: the sliding sleeve is fitted onto the outer ring of the rotating column, the outer wall of the rotating column is provided with a protrusion along the axial direction, the sliding sleeve is provided with an opening that cooperates with the protrusion, and the sliding sleeve is locked and positioned by a fixing bolt.

[0015] As a further description of the above technical solution: the vertical grinding assembly includes a second telescopic rod fixed to the vertical plate, a second mounting seat slidably mounted on the horizontal plate via a guide rail, a connecting rod connecting the second telescopic rod and the second mounting seat, and a second grinding disc mounted on the second mounting seat and driven by an independent motor.

[0016] One method of use includes the following steps:

[0017] S1. Place the large-sized microcrystalline glass workpiece horizontally and fix it between two sets of vertical grinding components;

[0018] S2. Start the T-shaped plate to rotate in a circle;

[0019] S3. Simultaneously, the first grinding disc on the drive horizontal grinding assembly makes radial reciprocating motion on the T-shaped plate to grind the lower surface of the workpiece.

[0020] It also includes another operating mode:

[0021] S1. Vertically fix at least one microcrystalline glass workpiece to be processed on the clamping assembly of the T-shaped plate;

[0022] S2. Drive the vertical grinding components on both sides to approach the workpiece;

[0023] S3. Drive the rotating column to reciprocate, so that the second grinding disc on the vertical grinding assembly can grind the two main surfaces of the workpiece synchronously.

[0024] It also includes another operating mode:

[0025] S1. Vertically fix the microcrystalline glass workpiece to be processed between the two mounting posts;

[0026] S2. Drive the vertical grinding components on both sides to approach the workpiece and grind the two main surfaces of the workpiece simultaneously.

[0027] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0028] 1. By integrating the horizontal and vertical grinding systems into one unit, and through three different operating modes, it can handle large-sized horizontally placed plates, process multiple small-sized vertically fixed workpieces simultaneously, and perform double-sided grinding on a single medium-sized vertical workpiece. This design greatly improves the versatility of the equipment, enabling it to flexibly cope with production tasks of different specifications and batches, and effectively reduce equipment investment and site occupation costs.

[0029] 2. In Modes 2 and 3, the vertical grinding components on both sides enable simultaneous double-sided grinding and polishing of the two main surfaces of the vertically placed microcrystalline glass workpiece, shortening the processing time, avoiding the risk of workpiece damage during the flipping process, and greatly improving production efficiency and yield.

[0030] 3. In Mode 1, which is designed for large horizontal workpieces, the overall circumferential rotation of the T-shaped plate is superimposed with the radial linear reciprocating motion of the first grinding disc, so that the high-speed rotating grinding disc can cover the entire surface of the workpiece and achieve uniform grinding from the center to the edge, thus ensuring a high degree of consistency in the surface finish and thickness of the final product. Attached Figure Description

[0031] Figure 1 A front view of the invention is shown;

[0032] Figure 2 A perspective view of the second mode of the present invention is shown;

[0033] Figure 3 A perspective view of the horizontal and vertical plates of the present invention is shown;

[0034] Figure 4 A perspective view of the vertical grinding assembly of the present invention is shown;

[0035] Figure 5 A perspective view of the lifting platform 12 of the present invention is shown;

[0036] Figure 6 A cross-sectional view of the adjustment component of the present invention is shown;

[0037] Figure 7 A perspective view of Mode 1 of the present invention is shown;

[0038] Figure 8 A perspective view of Mode 3 of the present invention is shown.

[0039] Legend:

[0040] 10. Mounting plate; 11. Hydraulic cylinder; 12. Lifting platform; 13. Rotary motor; 14. T-shaped plate; 15. First telescopic rod; 16. First mounting base; 17. First grinding disc; 18. U-shaped clamping plate; 19. Clamping screw; 20. Cylindrical shell; 21. Lead screw; 22. Slide rod; 23. Mounting column; 24. Rotating column; 241. Protruding strip; 25. Sliding sleeve; 26. Fixing bolt; 27. Vertical plate; 28. Horizontal plate; 29. ​​Second telescopic rod; 30. Second mounting base; 31. Second grinding disc; 32. Positioning screw. Detailed Implementation

[0041] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0042] Please see Figures 1-8 The present invention provides a technical solution: a grinding and polishing device and method for microcrystalline glass, including a mounting plate 10. On the top surface of the mounting plate 10, a hydraulic cylinder 11 is vertically fixedly installed in each of its four corner areas by high-strength bolts. The four hydraulic cylinders 11 together constitute a lifting assembly that can be raised and lowered synchronously.

[0043] The piston rod of each hydraulic cylinder 11 is rigidly connected to and supports the bottom wall of a horizontal lifting platform 12. This layout ensures that the lifting platform 12 always maintains a horizontal posture during the lifting process, providing a stable reference plane for subsequent grinding and polishing operations.

[0044] At the center of the bottom wall of the lifting platform 12, a rotary motor 13 is fixedly installed. The output shaft of the rotary motor 13 passes through the platform body of the lifting platform 12 from bottom to top. The part of the shaft that extends out of the top wall of the lifting platform 12 is fixedly connected to the bottom of a T-shaped plate 14. An annular guide rail is provided between the bottom wall of the T-shaped plate 14 and the top wall of the lifting platform 12 to form a sliding connection, so that when the rotary motor 13 drives the T-shaped plate 14 to rotate in a circle, the T-shaped plate 14 can rotate smoothly on the top wall of the lifting platform 12.

[0045] The top surface of the T-shaped plate 14 extends radially outward from the central area into three main functional plates. On these three plates, a set of horizontal grinding components and no less than two sets of clamping components are installed.

[0046] The horizontal grinding assembly includes a first telescopic rod 15, which is fixed to a functional plate on the top of the T-shaped plate 14. The linear drive output end of the first telescopic rod 15 is fixedly connected to a first mounting base 16. An independent drive motor and a first grinding disc 17 linked with it are mounted on the first mounting base 16. The drive motor is specifically used to drive the first grinding disc 17 to rotate at high speed to perform grinding operations on horizontally placed glass workpieces.

[0047] The clamping assembly is used to vertically fix glass workpieces. Each clamping assembly includes at least two U-shaped clamps 18. Each U-shaped clamp 18 can be detachably installed on the designated functional plate on the top of the T-shaped plate 14 through the reserved bolt holes and fastening bolts at its bottom. At least two threaded through holes are machined on the two opposite arms of each U-shaped clamp 18. A total of at least four clamping screws 19 are provided. The ends of the clamping screws 19 are provided with soft pressure blocks. By screwing in or out the clamping screws 19, vertically placed glass workpieces can be clamped and fixed.

[0048] On the left and right sides of the top surface of the mounting plate 10, two sets of identical adjustment components are symmetrically installed along its length. Each set of adjustment components includes two cylindrical shells 20 arranged side by side. These two cylindrical shells 20 are fixed to the top wall of the mounting plate 10. A lead screw 21 is provided inside one of the cylindrical shells 20, while a sliding rod 22 is provided inside the other cylindrical shell 20.

[0049] An additional servo motor is installed on the outer wall of the cylindrical housing 20 that houses the lead screw 21. The output end of the servo motor is connected to the end of the lead screw 21 to drive the lead screw 21 to rotate in both directions. On the outer peripheral walls of the lead screw 21 and the slide bar 22, a mounting post 23 is connected and supported by a slider with internal threads and a linear bearing. This structure enables the mounting post 23 to move precisely linearly along the axial direction of the lead screw 21 and the slide bar 22 when the servo motor drives the lead screw 21 to rotate.

[0050] Between the two mounting columns 23 of the two sets of adjustment components, there is a rotating column 24 driven by an independent motor. The two ends of the rotating column 24 are rotatably connected to the two mounting columns 23 through bearing seats. On the cylindrical side wall of the rotating column 24, there is an integrally formed protrusion 241 machined along its axial direction.

[0051] On the outer ring of the rotating column 24, there are at least two sliding sleeves 25. The inner wall shape of each sliding sleeve 25 matches the outer wall of the rotating column 24, and an opening is provided on one side to cooperate with the protrusion 241. The protrusion 241 is embedded in the opening. Its function is to drive the sliding sleeve 25 to rotate synchronously when the rotating column 24 rotates, but to allow the sliding sleeve 25 to slide freely along the axial direction of the rotating column 24. In addition, there are several radial fixing bolts 26 on the wall of the sliding sleeve 25. Tightening these fixing bolts 26 can lock the sliding sleeve 25 at any position in the axial direction of the outer ring of the rotating column 24.

[0052] Each sliding sleeve 25 is integrally cast with a vertical plate 27. The vertical plate 27 has a strip-shaped through hole. At the end where the two sliding sleeves 25 and their vertical plates 27 are close to each other, each vertical plate 27 is integrally formed with two horizontal plates 28 distributed vertically and horizontally. The two horizontal plates 28, the vertical plates 27 and the sliding sleeves 25 connected to them together form a movable and rotatable mounting frame for supporting the vertical grinding assembly.

[0053] The vertical grinding assembly is mounted on a frame consisting of two horizontal plates 28 and a vertical plate 27. The vertical grinding assembly includes a second telescopic rod 29, which is fixedly mounted on the outer end faces of the two vertical plates 27. A second mounting base 30 is mounted on the two horizontal plates 28 via a sliding guide rail. The second mounting base 30 is connected to the output end of the second telescopic rod 29 via a connecting rod that passes through a strip-shaped hole. An independent drive motor and a second grinding disc 31 that cooperate with it are also integrated on the second mounting base 30 for grinding vertically placed glass workpieces.

[0054] In order to fix the large glass piece placed horizontally, several positioning holes are machined along its length on the top horizontal plate 28. A positioning screw 32 is threaded into the positioning hole to fix the horizontally placed glass workpiece. The whole device is equipped with two rotating columns 24, and each rotating column 24 is equipped with two or more sets of vertical grinding components.

[0055] A method for using a grinding and polishing device for microcrystalline glass, the specific method of use and the workflow of which can be divided into different operation modes according to the size, shape and processing requirements of the microcrystalline glass workpiece to be processed.

[0056] Mode 1: Grinding and polishing a single large, horizontally placed piece of microcrystalline glass.

[0057] refer to Figure 8 First, drive the mounting columns 23 on the two sets of adjustment components to the maximum distance between them. Place a large-sized microcrystalline glass workpiece horizontally on the two sets of opposing horizontal plates 28. Tighten the multiple positioning screws 32 located on the top horizontal plate 28 so that their ends press against the upper surface of the glass workpiece, thereby fixing the horizontal workpiece between the frames of the two sets of vertical grinding components. In this mode, the rotating column 24 remains stationary and locked.

[0058] The four hydraulic cylinders 11 are activated and controlled to raise the lifting platform 12 to the preset initial processing height, so that the first grinding disc 17 of the horizontal grinding assembly mounted on the T-shaped plate 14 is located below the glass workpiece.

[0059] The rotary motor 13 is started, driving the T-shaped plate 14 to rotate smoothly in a circular motion at a set speed. At the same time, the drive motor of the first grinding disc 17 is started, causing it to rotate at high speed. The control system controls the first telescopic rod 15 to perform periodic telescopic movements. When the first telescopic rod 15 extends, the first grinding disc 17 moves outward from the area near the rotation center of the T-shaped plate 14; when it retracts, it moves in the opposite direction.

[0060] The overall circumferential rotation of the T-shaped plate 14 is superimposed with the radial linear reciprocating motion of the first telescopic rod 15, so that the high-speed rotating first grinding disc 17 can cover and grind the entire surface of the horizontal glass workpiece without dead angles; during the processing, the contact pressure between the first grinding disc 17 and the glass surface can be precisely controlled by adjusting the lifting and lowering of the hydraulic cylinder 11, realizing multiple processes from rough grinding to fine polishing.

[0061] Mode 2 involves simultaneously grinding and polishing multiple small, vertically placed microcrystalline glass pieces on both sides.

[0062] refer to Figure 2 First, start the servo motor in the two sets of adjustment components to drive the lead screw 21 to rotate, so that the mounting columns 23 on both sides are close to each other. Then, adjust the lifting platform 12 to a height that is easy to operate. Place the two small microcrystalline glass workpieces vertically in the clamping assembly on the top of the T-shaped plate 14, tighten the clamping screws 19 on each set of U-shaped clamping plates 18, and use the soft pressure blocks at their ends to fix the glass workpieces.

[0063] By manually sliding the sliding sleeve 25 until the second grinding discs 31 of the vertical grinding components on both sides are close to the clamped glass workpiece, the sliding sleeve 25 is fixed, and the drive motors of all the second grinding discs 31 are started to make them rotate at high speed; the motor of the drive rotating column 24 is started to make it reciprocate in a fan-shaped swing within a preset angle range. Since the sliding sleeve 25 is linked with the rotating column 24 through the convex strip 241, the entire vertical grinding component will reciprocate in a fan-shaped motion, thereby realizing the synchronous grinding of the two glass workpieces.

[0064] Mode 3: Double-sided grinding and polishing of a single, large, vertically placed piece of microcrystalline glass.

[0065] refer to Figure 7 The adjustment component is activated to move the mounting posts 23 on both sides away from each other to a suitable distance. A large piece of microcrystalline glass is vertically fixed between the two mounting posts 23 by the clamping component. The two vertical grinding components located on the two mounting posts 23 work simultaneously to grind and polish the two main surfaces, which greatly improves production efficiency.

[0066] Auxiliary process:

[0067] During the grinding and polishing process in any of the above modes, the coolant and grinding fluid supply system (not shown in the figure) equipped with the device will continuously spray liquid onto the contact area between the first grinding disc 17 or the second grinding disc 31 and the glass workpiece, which will serve to cool, lubricate, remove chips and assist in chemical mechanical polishing. After the rough grinding process is completed, the equipment can be paused, and a grinding disc with a finer grit or a special polishing pad can be replaced, and the corresponding grinding fluid or polishing fluid can be replaced. Then, the next fine grinding or polishing process can be carried out according to the corresponding mode's operating procedure until the final surface quality requirements are met.

[0068] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A grinding and polishing apparatus for microcrystalline glass, comprising a mounting plate (10), characterized in that: The mounting plate (10) is provided with a lifting assembly, the lifting assembly is provided with a rotatable T-shaped plate (14), the T-shaped plate (14) is provided with a horizontal grinding assembly for grinding horizontal workpieces and a clamping assembly for clamping vertical workpieces. The mounting plate (10) is symmetrically provided with adjustment components on both sides. Each adjustment component is provided with a mounting column (23). A rotating column (24) is rotatably connected between the two mounting columns (23). At least two vertical grinding components are mounted on the rotating column (24) through at least two mounting frames. The mounting frame includes a vertical plate (27) and a horizontal plate (28) integrally formed with the sliding sleeve (25), and the top horizontal plate (28) is provided with a positioning screw (32).

2. The grinding and polishing apparatus for microcrystalline glass according to claim 1, characterized in that: The lifting assembly includes hydraulic cylinders (11) fixed to the four corners of the top of the mounting plate (10), and the piston rods of each hydraulic cylinder (11) jointly support the lifting platform (12); A rotary motor (13) is installed at the center of the bottom of the lifting platform (12), and its output shaft passes through the lifting platform (12) and is fixedly connected to the T-shaped plate (14).

3. The grinding and polishing apparatus for microcrystalline glass according to claim 1, characterized in that: The horizontal grinding assembly includes a first telescopic rod (15) fixed on a T-shaped plate (14), and a first mounting base (16) is fixedly connected to the output end of the first telescopic rod (15). The first mounting base (16) is equipped with an independent drive motor and a first grinding disc (17) driven by it.

4. The grinding and polishing apparatus for microcrystalline glass according to claim 1, characterized in that: The clamping assembly includes at least two detachable U-shaped clamps (18), each U-shaped clamp (18) having at least four clamping screws (19) with elastic pressure pads at the ends on its two arms.

5. The grinding and polishing apparatus for microcrystalline glass according to claim 1, characterized in that: The adjustment assembly includes a cylindrical shell (20) fixed on the mounting plate (10), a lead screw (21) and a slide rod (22) disposed in the two cylindrical shells (20), and a servo motor for driving the lead screw (21); The mounting post (23) is connected to the lead screw (21) and slide bar (22) via a threaded slider and a linear bearing.

6. The grinding and polishing apparatus for microcrystalline glass according to claim 1, characterized in that: The sliding sleeve (25) is fitted onto the outer ring of the rotating column (24). The outer wall of the rotating column (24) is provided with a protrusion (241) along the axial direction. The sliding sleeve (25) is provided with an opening that cooperates with the protrusion (241). The sliding sleeve (25) is locked and positioned by a fixing bolt (26).

7. The grinding and polishing apparatus for microcrystalline glass according to claim 1, characterized in that: The vertical grinding assembly includes a second telescopic rod (29) fixed on the vertical plate (27), a second mounting base (30) slidably mounted on the horizontal plate (28) via a guide rail, a connecting rod connecting the second telescopic rod (29) and the second mounting base (30), and a second grinding disc (31) mounted on the second mounting base (30) and driven by an independent motor.

8. A method of using the grinding and polishing apparatus as described in claims 1-7, characterized in that, Includes the following steps: S1. Place the large-sized microcrystalline glass workpiece horizontally and fix it between two sets of vertical grinding components; S2. Start the T-shaped plate (14) to rotate in a circle; S3. At the same time, the first grinding disc (17) on the drive horizontal grinding assembly makes radial reciprocating motion on the T-shaped plate (14) to grind the lower surface of the workpiece.

9. The method of use according to claim 8, characterized in that: It also includes another operating mode: S1. Vertically fix at least one microcrystalline glass workpiece to be processed on the clamping assembly of the T-shaped plate (14); S2. Drive the vertical grinding components on both sides to approach the workpiece; S3. Drive the rotating column (24) to reciprocate, so that the second grinding disc (31) on the vertical grinding assembly can grind the two main surfaces of the workpiece synchronously.

10. The method of use according to claim 9, characterized in that: It also includes another operating mode: S1. Vertically fix the microcrystalline glass workpiece to be processed between two mounting posts (23); S2. Drive the vertical grinding components on both sides to approach the workpiece and grind the two main surfaces of the workpiece simultaneously.

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