A ball shoveling plate for processing G3 grade silicon nitride ceramic balls

Abstract

The present invention discloses a ball shoveling plate for processing G3-level silicon nitride ceramic balls, which comprises a ball shoveling plate body. The front and rear sides of the ball shoveling plate body are clamped in the observation window of the upper grinding disc, and gaps allowing ceramic balls to pass through are arranged between the left and right sides and the observation window. The upper surface of the ball shoveling plate body is sequentially provided with a slope surface, a flat surface and a stepped surface. The lower surface of the ball shoveling plate body can abut against the lower grinding disc. The slope surface forms an acute angle with the bottom surface of the ball shoveling plate body. A plurality of protrusions are arranged on the flat surface, and the stepped surface is lower than the flat surface. The ball shoveling plate of the present invention can make the balls in the lower grinding disc be evenly mixed through the protrusion structure on the flat surface. Every time it rotates one week, the ceramic balls can randomly enter any groove, improving the string groove effect, so that all ceramic balls can basically pass through the processing path of the same length, reducing the batch diameter variation of the silicon nitride ceramic balls; the step enables the ceramic balls to enter the grinding groove indirectly, improving the self-rotation ability of the ceramic balls.

Description

Technical Field

[0001] The present invention relates to the technical field of ceramic ball processing, and particularly to a ball shoveling plate for processing G3 grade silicon nitride ceramic balls. Background Art

[0002] The processing of ceramic balls requires circular grinding in a grinding disc. Since the circumferences of each channel are different, after the ceramic balls in different channels are ground for the same period of time, the difference in the batch diameter variation is very large. Therefore, it is necessary to use a ball shoveling plate to shovel up the ceramic balls and make them enter different channels. When the currently disclosed ball shoveling plate is in use, after the ceramic balls pass through the ball shoveling plate, they will move towards the outer channels, and very few balls enter the inner channels. In severe cases, there will be ball accumulation. Moreover, the ceramic balls enter the grinding disc continuously in a string, and the balls push and rub against each other, resulting in large spherical errors, large dimensional tolerances, large batch diameter variations and other precision problems in the processed silicon nitride ceramic balls. Therefore, there is an urgent need for a device that can evenly distribute the silicon nitride ceramic balls to be processed during the processing and appear in different channels with equal probability. Summary of the Invention

[0003] The purpose of the present invention is to provide a ball shoveling plate for processing G3 grade silicon nitride ceramic balls to solve the above problems existing in the prior art, so that the ceramic balls in the grinding disc are evenly mixed into each channel with the rotation, enter the grinding disc intermittently, effectively improve the self-rotation ability and cross-channel effect of the ceramic balls, and reduce the diameter variation and batch diameter variation of the balls.

[0004] To achieve the above purpose, the present invention provides the following solution:

[0005] The present invention provides a ball shoveling plate for processing G3 grade silicon nitride ceramic balls, including a ball shoveling plate body. The front and rear sides of the ball shoveling plate body are clamped in the observation window of the upper grinding disc, and gaps allowing ceramic balls to pass through are provided between the left and right sides of the ball shoveling plate body and the observation window. The upper surface of the ball shoveling plate body is sequentially provided with a slope surface, a flat surface and a step surface. The lower surface of the ball shoveling plate body can be in contact with the lower grinding disc. The slope surface forms an acute angle with the bottom surface of the ball shoveling plate body. A plurality of protrusions are provided on the flat surface, and the step surface is lower than the flat surface.

[0006] Preferably, the shape of the protrusions is a hemisphere, a cylinder or a frustum of a cone and they are arranged staggeredly. The distance between adjacent protrusions is greater than the diameter of the ceramic ball and less than 2 times the diameter of the ceramic ball.

[0007] Preferably, the slope surface forms an angle of 20°-45° with the bottom surface of the ball shoveling plate body.

[0008] Preferably, the step surface includes an acute-angle step surface and a right-angle step surface connected in sequence. The lower end of the acute-angle step surface is connected below the flat surface, and the right-angle step surface is arranged below the upper end of the acute-angle step surface.

[0009] Preferably, the acute stepped surface forms an angle of 10°-20° with the horizontal plane, which can make the ceramic ball stay temporarily.

[0010] Preferably, the width of the acute stepped surface is the same as the diameter of the ceramic ball, and the height difference between the lower end of the acute stepped surface and the plane is less than the diameter of the ceramic ball.

[0011] Preferably, the width of the right-angled stepped surface and the height difference from the upper end of the acute stepped surface are both less than the diameter of the ceramic ball.

[0012] Preferably, the width of the plane is at least three times the diameter of the ceramic ball.

[0013] The present invention has achieved the following technical effects compared with the prior art:

[0014] The ball shoveling plate of the present invention can evenly mix the balls in the lower grinding plate through the convex structure on the plane. Every time it rotates one week, the ceramic balls can randomly enter the channels of any diameter, greatly improving the effect of cross channels. As a result, all ceramic balls can basically pass through the same length of processing path, reducing the batch diameter variation of silicon nitride ceramic balls. The design of the rear step enables intermittent ball passing. After the ceramic balls enter the channels, the ceramic balls do not touch each other, improving the self-rotation effect and reducing the diameter variation of silicon nitride ceramic balls. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0016] Figure 1 Structural schematic of the ball shoveling plate for processing G3 grade silicon nitride ceramic balls of the present invention Figure 1 ;

[0017] Figure 2 Structural schematic of the ball shoveling plate for processing G3 grade silicon nitride ceramic balls of the present invention Figure 2 ;

[0018] Figure 3 Structural schematic of the ball shoveling plate for processing G3 grade silicon nitride ceramic balls of the present invention Figure 3 ;

[0019] Among them: 1 - ball shoveling plate body, 2 - slope surface, 3 - plane, 4 - protrusion, 5 - acute stepped surface, 6 - right-angled stepped surface, 7 - bottom surface. DETAILED DESCRIPTION OF THE INVENTION

[0020] The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0021] The purpose of the present invention is to provide a ball shoveling plate for processing G3 grade silicon nitride ceramic balls, so as to solve the problems existing in the prior art, make the ceramic balls in the grinding disc evenly mixed into each groove with the rotation, enter the grinding disc intermittently, effectively improve the self-rotation ability and groove-crossing effect of the ceramic balls, and reduce the diameter variation and batch diameter variation of the balls.

[0022] In order to make the above objects, features and advantages of the present invention more obvious and understandable, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0023] As Figures 1 to 3 shown: This embodiment provides a ball shoveling plate for processing G3 grade silicon nitride ceramic balls, including a ball shoveling plate body 1. The front and rear sides of the ball shoveling plate body 1 are clamped in the observation windows of the upper grinding disc, and gaps allowing ceramic balls to pass through are provided between the left and right sides and the observation windows. The upper surface of the ball shoveling plate body 1 is sequentially provided with a slope 2, a flat surface 3 and a step surface. The lower surface of the ball shoveling plate body 1 can be in contact with the lower grinding disc. The slope 2 forms an acute angle with the bottom surface 7 of the ball shoveling plate body 1. A plurality of protrusions 4 are provided on the flat surface 3, and the step surface is lower than the flat surface 3.

[0024] The protrusions 4 are in the shape of hemispheres, cylinders or frustum cones and are arranged staggeredly. The distance between adjacent protrusions 4 is greater than the diameter of the ceramic balls and less than twice the diameter of the ceramic balls. The protrusions 4 in this embodiment serve as a uniform mixing structure for the ceramic balls, enabling the ceramic balls to randomly enter any groove, greatly improving the groove-crossing effect, so that all ceramic balls can basically pass through the same length of processing path, and reducing the batch diameter variation of the silicon nitride ceramic balls. The slope 2 forms an angle of 20°-45° with the bottom surface 7 of the ball shoveling plate body 1, which is convenient for shoveling up the ceramic balls. The width of the flat surface 3 is at least three times the diameter of the ceramic balls, so that the ceramic balls have a sufficient mixing area.

[0025] The stepped surface includes an acute-angled stepped surface 5 and a right-angled stepped surface 6 connected in sequence. The lower end of the acute-angled stepped surface 5 is connected below the flat surface 3, and the right-angled stepped surface 6 is arranged below the upper end of the acute-angled stepped surface 5. The acute-angled stepped surface 5 forms an angle of 10°-20° with the horizontal plane, enabling the ceramic ball to temporarily stay on the acute-angled stepped surface 5. The width of the acute-angled stepped surface 5 is the same as the diameter of the ceramic ball, and the height difference between the lower end of the acute-angled stepped surface 5 and the flat surface 3 is less than the diameter of the ceramic ball, so that the subsequent ceramic ball can push the ceramic ball temporarily staying on the acute-angled stepped surface 5 to the right-angled stepped surface 6, replacing the pushed previous ceramic ball to stay on the acute-angled stepped surface 5. Since only one ceramic ball can pass through each channel each time, with intermittent ball stopping, after the ceramic ball enters the channel, the two ceramic balls do not touch each other, greatly improving the self-rotation effect of the ceramic ball and reducing the diameter variation of the silicon nitride ceramic ball. The width of the right-angled stepped surface 6 and the height difference from the upper end of the acute-angled stepped surface 5 are both less than the diameter of the ceramic ball, so that the ceramic ball will not directly fall onto the lower grinding plate, preventing the influence on the channel accuracy of the lower grinding plate and facilitating the batch production of G3 grade silicon nitride ceramic balls stably.

[0026] In this specification, specific examples are used to elaborate on the principle and implementation mode of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention; at the same time, for those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation mode and application scope. In summary, the content of this specification should not be construed as a limitation to the present invention.

Claims

1. A shovel ball plate for processing G3 grade silicon nitride ceramic balls, characterized in that: It includes a tackling plate body, the front and rear sides of the tackling plate body are clamped in the observation window of the upper grinding plate, and there are gaps allowing ceramic balls to pass through between the left and right sides and the observation window. The upper surface of the tackling plate body is successively provided with a slope surface, a flat surface and a stepped surface. The lower surface of the tackling plate body can be in contact with the lower grinding plate. The slope surface forms an acute angle with the bottom surface of the tackling plate body. A number of protrusions are arranged on the flat surface. The distance between adjacent protrusions is greater than the diameter of the ceramic ball and less than 2 times the diameter of the ceramic ball. The stepped surface is lower than the flat surface; The stepped surface includes an acute-angle stepped surface and a right-angle stepped surface connected in sequence. The low end of the acute-angle stepped surface is connected below the flat surface. The right-angle stepped surface is arranged below the high end of the acute-angle stepped surface. The acute-angle stepped surface forms an angle of 10°-20° with the horizontal plane and can make the ceramic ball stay temporarily.

2. The ball shoveling plate for processing G3 grade silicon nitride ceramic balls according to claim 1, characterized in that: The shapes of the protrusions are hemispheres, cylinders or frustums of cones and are arranged staggeredly.

3. The ball shoveling plate for processing G3 grade silicon nitride ceramic balls according to claim 1, wherein: The slope surface forms an angle of 20°-45° with the bottom surface of the tackling plate body.

4. The ball shoveling plate for processing G3 grade silicon nitride ceramic balls according to claim 1, characterized in that: The width of the acute-angle stepped surface is the same as the diameter of the ceramic ball, and the height difference between the low end of the acute-angle stepped surface and the flat surface is less than the diameter of the ceramic ball.

5. The ball shoveling plate for processing G3 level silicon nitride ceramic balls according to claim 1, wherein: The width of the right-angle stepped surface and the height difference from the high end of the acute-angle stepped surface are both less than the diameter of the ceramic ball.

6. The ball shoveling plate for processing G3 grade silicon nitride ceramic balls according to claim 1, wherein: The width of the flat surface is at least 3 times the diameter of the ceramic ball.

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