A slot plate grinding and polishing device for hard and brittle material balls

Abstract

A kind of hard and brittle material ball groove disc grinding and polishing device, including upper groove disc, lower groove disc, ball is installed between upper groove disc and lower groove disc, lower groove disc is driven by machine tool transmission system and makes circumferential rotation, upper groove disc and lower groove disc are horizontally placed, the lower end surface of the upper groove disc is provided with multiple openings downwards upper disc V-shaped groove, the upper end surface of lower groove disc is provided with multiple openings upwards lower disc V-shaped groove, upper disc V-shaped groove and lower disc V-shaped groove are axially concentrically arranged, the bottom end of the lower groove disc is supported by lower groove disc support seat frame, the upper end surface of the upper groove disc is connected and fixed with lower connecting plate, central setting of lower connecting plate is handled by ratchet wheel, lower connecting plate is connected and fixed with upper connecting plate by stand, the central of upper connecting plate is provided with alignment mechanism, alignment mechanism is connected and fixed with lifting mechanism, upper groove disc is axially moved by lifting mechanism, upper groove disc is aligned with lower groove disc by alignment mechanism.

Description

Technical Field

[0001] This utility model relates to the field of hard and brittle material processing technology, specifically to a grooved disc grinding and polishing device for hard and brittle material spheres. Background Technology

[0002] Spherical components made of hard and brittle non-metallic materials are mainly made of materials such as gemstones, ceramics, tungsten steel, and glass. The processing method involves two grinding discs, an upper and an lower one. The lower grinding disc is mounted on the spindle, and the spherical blank is placed in the annular groove of the lower grinding disc. Then, the annular groove of the upper grinding disc aligns with the spherical blank in the annular groove of the lower grinding disc. The lower grinding disc rotates, while the upper grinding disc remains stationary, allowing the spherical blank to roll within the annular groove. Abrasive is added to the annular groove for grinding and polishing. Currently, high precision is required for the spherical blanks, with a roundness requirement of G5 grade. High-precision spherical processing places high demands on the equipment. Two types of equipment exist for processing spherical components. One is the older production line equipment. In this equipment, the upper disc needs to be removed for spherical loading, dimensional and roundness checks, and then closed again during processing. This requires entirely manual handling, and the handling frequency is high. The upper grinding disc is made of steel and weighs 10-20 kg, resulting in high labor intensity for workers. The lower grooved disc is supported only by the central journal. Due to its large diameter, it also experiences significant runout, making it suitable only for low-precision spherical machining or rough machining of spherical blanks, and unsuitable for high-precision spherical machining. Another type is grinding and polishing equipment used in the electronics and semiconductor industry. In this type, the upper grinding disc is connected to the cylinder piston rod via a spherical bearing. While this ensures a smooth, flush fit between the workpiece on the upper and lower grinding discs for grinding and polishing planar components in the electronics industry, it cannot guarantee the concentricity of the upper and lower grooved discs when machining spherical components. Furthermore, this equipment uses a grinding disc drive system to drive the upper and lower grinding discs to rotate circumferentially relative to each other, and both grinding and polishing surfaces are flat. This makes it suitable only for double-sided grinding and polishing of planar semiconductor sheet components, not for machining spherical components, and the resulting spherical components have low precision. Neither of the existing two types of equipment can produce spherical components with a roundness level of G5.

[0003] Therefore, there is an urgent need for a device capable of grinding and polishing high-precision spherical components made of hard and brittle non-metallic materials. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a grooved disc grinding and polishing device for spheres made of hard and brittle materials. This device can perform high-precision machining of spheres made of hard and brittle materials while reducing the intensity of manual labor.

[0005] The purpose of this utility model is achieved by the following solution: a grooved disc grinding and polishing device for a hard and brittle sphere, comprising an upper grooved disc and a lower grooved disc, with the sphere installed between the upper and lower grooved discs. The lower grooved disc is driven to rotate circumferentially by a machine tool transmission system. The upper and lower grooved discs are placed horizontally. The lower end face of the upper grooved disc is provided with multiple downward-opening upper grooves, and the upper end face of the lower grooved disc is provided with multiple upward-opening lower grooves. The upper and lower grooves are axially concentric. The bottom end of the lower grooved disc is supported by a lower grooved disc support frame, and the upper end face of the upper grooved disc is connected and fixed to a lower connecting plate. The lower connecting plate is connected and fixed to the upper connecting plate via a column. An alignment mechanism is set in the center of the upper connecting plate. The alignment mechanism includes a conical sleeve that is fixed to the upper connecting plate. The inner diameter of the upper end of the conical sleeve is larger than the inner diameter of the lower end. A hemispherical head shaft is set in the center of the conical sleeve. The diameter of the ball at the lower end of the hemispherical head shaft is larger than the inner diameter of the upper end of the conical sleeve but smaller than the inner diameter of the lower end of the conical sleeve. The outer diameter of the upper end of the hemispherical head shaft is smaller than the inner diameter of the upper end of the conical sleeve. A pressure cap is set on the outer circumference of the upper end of the hemispherical head shaft. The upper end of the hemispherical head shaft is connected and fixed to the piston rod in the lifting mechanism. The upper groove plate moves axially through the lifting mechanism. The upper groove plate is aligned with the lower groove plate through the alignment mechanism.

[0006] The upper center of the hemispherical head shaft is provided with a threaded hole, and the hemispherical head shaft is connected and fixed to the piston rod in the lifting mechanism through a cap and a pressure cap nut.

[0007] The lifting mechanism includes a cylinder, which is fixed to the upper end face of the upper plate bracket. The piston rod passes through the upper plate bracket and is connected and fixed to the hemispherical head shaft. A guide rod support is provided on one side of the upper plate bracket. The upper end of the guide rod passes through the guide rod support, and the lower end of the guide rod is connected and fixed to the lower end of the piston rod.

[0008] A material tube frame is installed between the cap and the pressure cap nut in the alignment mechanism. Screws are connected to both ends of the material tube frame. The lower end of the screw is close to the screw head of the column at the upper end of the upper connecting plate. The upper groove plate is restricted to rotate by the upper connecting plate, the column, and the lower connecting plate. The material tube frame is connected and fixed to the piston rod in the center.

[0009] A pressure sensor is installed between the lower end of the piston rod and the cap.

[0010] The V-shaped openings in the upper and lower V-shaped grooves are 90° apart.

[0011] The opening of the conical sleeve is 60°.

[0012] The lower end face of the lower slot is connected to the lower slot support frame via a locating pin.

[0013] The upper and lower slotted plates are made of steel.

[0014] The advantages of this utility model are: 1. The lifting mechanism improves the automation level of the grinding and polishing device and reduces the intensity of manual labor.

[0015] 2. The lower grooved plate is supported by locating pins on a large diameter, ensuring smooth movement. The upper grooved plate is aligned with the lower grooved plate by a aligning mechanism, overcoming the problem of misalignment between the upper and lower grooved plates. Therefore, the upper and lower grooved plates can be used to process high-precision spheres.

[0016] 3. The upper grooved plate cannot rotate circumferentially, which ensures that the spherical components can be ground and polished normally, and the processed spherical components can meet the high precision requirements. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0018] like Figure 1As shown, a grooved grinding and polishing device for a hard and brittle material sphere includes an upper grooved plate 4 and a lower grooved plate 2. A sphere 3 is installed between the upper grooved plate 4 and the lower grooved plate 2. The lower grooved plate 2 is driven to rotate circumferentially by a machine tool transmission system, while the upper grooved plate 4 is fixed relative to the lower grooved plate 2. The lower end face of the lower grooved plate 2 is connected to the lower grooved plate support frame 1 by a positioning pin 2-1. The upper grooved plate 4 and the lower grooved plate 2 are placed horizontally. The lower end face of the upper grooved plate 4 is provided with multiple downward-opening upper plate V-shaped grooves 4-1, and the upper end face of the lower grooved plate 2 is provided with multiple upward-opening lower plate V-shaped grooves 2-2. The upper plate V-shaped grooves 4-1 and the lower plate V-shaped grooves 2-2 are axially concentric, and the V-shaped openings in the upper plate V-shaped grooves 4-1 and the lower plate V-shaped grooves 2-2 are 90°. The bottom end of the lower groove plate 2 is supported by the lower groove plate support frame 1. The upper end face of the upper groove plate 4 is connected and fixed to the lower connecting plate 5. The lower connecting plate 5 has a wheel clearance hole in the center. The lower connecting plate 5 is connected and fixed to the upper connecting plate 9 through the column 6. The upper connecting plate 9 has an alignment mechanism in the center. The alignment mechanism includes a conical sleeve 7 connected and fixed to the upper connecting plate 9. The inner diameter of the upper end of the conical sleeve 7 is larger than the inner diameter of the lower end. A hemispherical head shaft 8 is set in the center of the conical sleeve 7. The diameter of the ball head at the lower end of the hemispherical head shaft 8 is larger than the inner diameter of the upper end of the conical sleeve 7 and smaller than the inner diameter of the lower end of the conical sleeve 7. The outer diameter of the upper end of the hemispherical head shaft 8 is smaller than the inner diameter of the upper end of the conical sleeve 7. The opening of the conical sleeve 7 is 60°. A pressure cap 10 is set on the outer circumference of the upper end of the hemispherical head shaft 8. A threaded hole is set in the center of the upper end of the hemispherical head shaft 8. The hemispherical head shaft 8 is connected and fixed to the piston rod 16 in the lifting mechanism through the cap 14 and the pressure cap nut 12. A material tube frame 11 is installed between the cap 14 and the pressure cap nut 12 in the alignment mechanism. Screws 13 are connected to both ends of the material tube frame 11. The lower ends of the screws 13 are laterally close to the screw heads of the columns 6 at the upper end of the upper connecting plate 9. The upper connecting plate 9, the columns 6, and the lower connecting plate 5 restrict the rotation of the upper groove plate 4, and the material tube frame 11 is fixedly connected to the upper connecting plate 9. The center of the material tube frame 11 is fixedly connected to the piston rod 16. The upper groove plate 4 moves axially via a lifting mechanism and is aligned with the lower groove plate 2 via the alignment mechanism. The lifting mechanism includes a cylinder 20, which is fixed to the upper end face of the upper plate bracket 17. The piston rod 16 passes through the upper plate bracket 17 and is fixedly connected to the hemispherical head shaft 8. A guide rod support 19 is installed on one side of the upper plate bracket 17. The upper end of the guide rod 18 passes through the guide rod support 19, and the lower end of the guide rod 18 is fixedly connected to the lower end of the piston rod 16. A pressure sensor 15 is installed between the lower end of the piston rod 16 and the cap 14. The upper groove plate 4 and the lower groove plate 2 are made of steel.

[0019] The spherical machining process: A cylinder controls the upper grooved plate to rise, placing the sphere in the V-groove of the lower grooved plate. The cylinder then controls the upper grooved plate to descend, gently guiding it until the V-groove contacts the spherical blank, disengaging the hemispherical shaft from the tapered hole sleeve. The upper grooved plate is then gently rocked to bring its annular V-groove into contact with the workpiece. The grooved plate rotation speed, pressure, and processing time are input on the touchscreen, setting multiple processing programs. The grinding fluid circulation is initiated, the upper grooved plate is fixed, and a dial wheel drives the lower grooved plate to rotate, grinding the sphere. After grinding, the spherical element is removed, cleaned, and then polished using a finer abrasive on another machine of the same type.

[0020] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications made to the present utility model by those skilled in the art without departing from the spirit of the present utility model shall fall within the protection scope of the present utility model.

Claims

1. A grooved disc grinding and polishing device for a sphere made of hard and brittle material, comprising an upper grooved disc (4) and a lower grooved disc (2), wherein a sphere (3) is installed between the upper grooved disc (4) and the lower grooved disc (2), and the lower grooved disc (2) is driven to rotate circumferentially by a machine tool transmission system, characterized in that... The upper grooved plate (4) and the lower grooved plate (2) are placed horizontally. The lower end face of the upper grooved plate (4) is provided with multiple downward-opening upper plate V-shaped grooves (4-1), and the upper end face of the lower grooved plate (2) is provided with multiple upward-opening lower plate V-shaped grooves (2-2). The upper plate V-shaped grooves (4-1) and the lower plate V-shaped grooves (2-2) are axially concentric. The bottom end of the lower grooved plate (2) is supported by the lower grooved plate support frame (1). The upper end face of the upper grooved plate (4) is connected and fixed to the lower connecting plate (5). The lower connecting plate (5) is connected and fixed to the upper connecting plate (9) through the column (6). An alignment mechanism is provided in the center of the upper connecting plate (9). The alignment mechanism includes... The cone sleeve (7) is fixed to the upper connecting plate (9). The inner diameter of the upper end of the cone sleeve (7) is larger than the inner diameter of the lower end. A hemispherical head shaft (8) is set at the center of the cone sleeve (7). The diameter of the ball head at the lower end of the hemispherical head shaft (8) is larger than the inner diameter of the upper end of the cone sleeve (7) and smaller than the inner diameter of the lower end of the cone sleeve (7). The outer diameter of the upper end of the hemispherical head shaft (8) is smaller than the inner diameter of the upper end of the cone sleeve (7). A pressure cap (10) is set on the outer circumference of the upper end of the hemispherical head shaft (8). The upper end of the hemispherical head shaft (8) is fixed to the piston rod (16) in the lifting mechanism. The upper groove plate (4) moves axially through the lifting mechanism. The upper groove plate (4) is aligned with the lower groove plate (2) through the alignment mechanism.

2. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: The upper center of the hemispherical head shaft (8) is provided with a threaded hole, and the hemispherical head shaft (8) is connected and fixed to the piston rod (16) in the lifting mechanism through the splice cap (14) and the pressure cap nut (12).

3. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: The lifting mechanism includes a cylinder (20), which is fixed on the upper end face of the upper plate bracket (17). The piston rod (16) passes through the upper plate bracket (17) and is connected and fixed to the hemispherical head shaft (8). A guide rod support (19) is provided on one side of the upper plate bracket (17). The upper end of the guide rod (18) passes through the guide rod support (19), and the lower end of the guide rod (18) is connected and fixed to the lower end of the piston rod (16).

4. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: A material tube frame (11) is provided between the splicing cap (14) and the pressure cap nut (12) in the alignment mechanism. The two ends of the material tube frame (11) are connected to screws (13). The lower end of the screw (13) is close to the screw head of the column (6) at the upper end of the upper connecting plate (9). The upper groove plate (4) is restricted to rotate by the upper connecting plate (9), the column (6), and the lower connecting plate (5). It is connected and fixed to the upper connecting plate (9). The center of the material tube frame (11) is connected and fixed to the piston rod (16).

5. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: A pressure sensor (15) is installed between the lower end of the piston rod (16) and the cap (14).

6. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: The V-shaped openings in the upper plate V-groove (4-1) and the lower plate V-groove (2-2) are 90°.

7. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: The opening of the conical sleeve (7) is 60°.

8. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: The lower end face of the lower slotted plate (2) is connected to the lower slotted plate support frame (1) by a positioning pin (2-1).

9. The grooved disc grinding and polishing apparatus for hard and brittle material spheres according to claim 1, characterized in that: The upper groove plate (4) and the lower groove plate (2) are made of steel.

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