Glass surface high-efficiency roughing milling head

Abstract

The application relates to a high-efficiency roughening milling head for a glass surface, which comprises a base body, a milling head and a vane wheel; the bottom end of the milling head is provided with a grinding ring, the milling head is provided with a horn-shaped water inlet end, a water storage area and a water flow channel, the vane wheel is arranged below the water storage area, the ratio of atomized water of the vane wheel can be reduced, the cooling water flow is improved, the outer side wall of the grinding ring is provided with a chip removal groove, the inner side wall is provided with a water passage, and the milling head is internally provided with a water flow channel; when the vane wheel transmits a torsion and rotates simultaneously with the milling head, the vane pushes the cooling water to the end face of the grinding ring, then the water is affected by the water passage and applied to the grinding area, and the outer cooling mode is changed into the inner cooling mode; the chip removal speed is improved through the densely arranged outer chip removal groove and the water passage; the problem that the roughness of the roughened glass surface is too low due to the high passivation rate of diamond caused by the grinding heat and the poor self-sharpening property of the milling head is solved through the water passage, the contact area with the glass is reduced, and the problem that the thin glass is softened or broken due to the excessively large applied pressure is avoided.

Description

Technical Field

[0001] This invention relates to the field of grinding head technology, and more specifically to a high-efficiency roughening milling head for glass surfaces. Background Technology

[0002] Traditional frosted glass, also known as ground glass or obscured glass, is made by treating ordinary flat glass with mechanical sandblasting, manual grinding (such as with corundum), or chemical methods (such as hydrofluoric acid etching) to create a rough, uneven, semi-transparent surface. Mechanical sandblasting and manual grinding methods make it difficult to guarantee surface uniformity. Chemical treatments incur significant environmental costs.

[0003] Existing technology uses solid diamond grinding heads to achieve improved uniformity through grinding, which has been applied to LED lighting glass. However, when using solid diamond grinding heads, chip removal is extremely poor, and due to the inadequate cooling of the grinding surface by external cooling, smaller diameter areas are more prone to high passivation rates caused by grinding heat, resulting in poor self-sharpening properties of the grinding head and an insufficiently rough surface on the glass, failing to meet requirements. Currently, increasing the diamond particle size can improve surface roughness, but when the diamond particles are passivated, the contact area with the glass increases, requiring greater pressure to achieve sufficient grinding. Excessive pressure can easily cause thin glass to break. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a high-efficiency roughening milling head for glass surfaces, which addresses the shortcomings of the prior art.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A high-efficiency roughening milling head for glass surface includes a base, a grinding head and multiple impellers. The grinding head is mounted on the base shaft of the base. The grinding head is cylindrical and a grinding ring is provided at the bottom end of the grinding head. The grinding ring is an impregnated diamond ring.

[0006] The interior of the grinding head is provided with a funnel-shaped water inlet end, a water storage area and a water flow channel around the axis of the grinding head. The water inlet end, the water storage area and the water flow channel are connected sequentially from the top end of the grinding head to the bottom end in the direction of water inlet.

[0007] The impeller is located below the water storage area. Both ends of the impeller are fixedly connected to the grinding head and the base shaft, respectively. Multiple impellers are distributed at intervals around the axis of the grinding head.

[0008] The grinding ring has an axially formed chip removal groove on its outer side wall and an axially formed water passage groove on its inner side wall. At least two chip removal grooves are provided, spaced apart on the outer side wall of the grinding ring. At least two water passage grooves are provided, spaced apart on the inner side wall of the grinding ring and located at the water flow channel. The thickness of the grinding ring is B, satisfying 0.4mm < B ≤ 1mm. The radial depth of the chip removal groove is b1, satisfying 0mm < (B-b1) ≤ 0.5mm. The radial depth of the water passage groove is b, satisfying 0mm < (Bb) ≤ 0.5mm. Furthermore, the cumulative total arc length of the ground material on the inner side wall of the grinding ring is equal to the cumulative total arc length of the ground material on the outer side wall.

[0009] The beneficial effects of this invention are as follows: The grinding head is provided with a funnel-shaped water inlet end, a water storage area, and a water flow channel. The impeller is located below the water storage area, which can reduce the ratio of water atomized by the impeller and increase the cooling water flow rate. Chip removal grooves are opened on the outer side wall of the grinding ring, and water passage grooves are opened on the inner side wall, located at the water flow channel. The impeller transmits torque, and when it rotates simultaneously with the grinding head, the impeller helps to push the cooling water to the end face of the grinding ring, and then acts on the grinding area through the water passage groove, realizing the external cooling to internal cooling mode. The chip removal speed is improved by the chip removal grooves and water passage grooves distributed on the grinding ring. The water passage groove solves the problem of high passivation rate of diamond due to grinding heat and poor self-sharpening of the grinding head, resulting in low roughness of the roughened glass surface. It also reduces the contact area with the glass and avoids the problem of thin glass softening or breaking due to excessive pressure.

[0010] Based on the above technical solution, the present invention can be further improved as follows.

[0011] Furthermore, the grinding head is shaped like a trumpet with the sidewall of the water storage area at an angle θ to the axis of the grinding head, where 0° < θ < 45°; the grinding head is shaped like a trumpet with the sidewall of the water inlet end at an angle θ1 to the axis of the grinding head, where 0° < θ1 < 90°.

[0012] The beneficial effects of adopting the above-mentioned further scheme are as follows: the overlapping of the funnel-shaped water inlet end, the water storage area and the water flow channel, under the action of centrifugal force, has an axial downward force, which helps to push the direction of water flow, increases the flow rate, and forms a water storage area on the impeller. The water storage area can effectively reduce the proportion of atomized water supplied by the impeller, which is conducive to the flow of water into the inner cavity of the end face grinding wheel. Under the action of centrifugal force, the water entering the water storage area has an axial force component in the direction of the inner cavity of the grinding ring, which increases the flow rate and flow rate of cooling water entering the inner cavity of the grinding ring.

[0013] Furthermore, the bottom end face of the grinding ring is inclined from the outer side wall to the inner side wall from top to bottom, forming an axial height difference h, which satisfies h = 0.5 * diamond grit size.

[0014] The beneficial effects of adopting the above-mentioned further scheme are: during the milling process, the diamond working layer end face of the milling head is in full contact with the workpiece. The height h is set so that the milling head has a shape-preserving effect. That is, during the processing, as the working layer is continuously consumed, the shape of the working layer end face h is closer to a straight surface, which can always play a role in roughening and uniformity.

[0015] Furthermore, the chip removal groove is triangular prism-shaped; the chip removal groove starts from the outer wall of the grinding ring and extends into the interior of the grinding ring in the axial and radial directions respectively, and the chip removal groove opening in the axial direction of the grinding ring communicates with the diamond working layer, and the chip removal groove opening in the radial direction of the grinding ring communicates with the bottom end face of the grinding ring.

[0016] The beneficial effect of adopting the above-mentioned further solution is that by adjusting the angle of the sidewall of the chip removal groove, radial chip removal is promoted, which greatly improves the chip removal speed.

[0017] Furthermore, the water channel is in the shape of a triangular prism; the water channel extends from the inner wall of the grinding ring in both the axial and radial directions into the interior of the grinding ring, and the opening of the water channel in the axial direction of the grinding ring is connected to the inner wall of the grinding ring, while the opening of the water channel in the radial direction of the grinding ring is connected to the bottom end face of the grinding ring.

[0018] The beneficial effects of adopting the above-mentioned further scheme are: the impeller propels the bundled cooling water to the grinding area, and the cooling water flows more effectively along the water channel to the diamond working layer of the grinding ring, forming an internal cooling mode, improving the water supply rate, and enhancing the cooling effect. Attached Figure Description

[0019] Figure 1 This is an overall schematic diagram of a high-efficiency roughening milling head for glass surfaces provided in an embodiment of the present invention;

[0020] Figure 2 An AA view of a high-efficiency roughening milling head for glass surfaces provided in an embodiment of the present invention;

[0021] Figure 3 for Figure 2 Sectional view at point AA;

[0022] Figure 4 A schematic diagram of a grinding ring provided in an embodiment of the present invention;

[0023] Figure 5 for Figure 4 A magnified view of the area at point W.

[0024] The attached diagram lists the components represented by each number as follows:

[0025] 1. Matrix;

[0026] 2. Grinding head; 201. Grinding ring; 202. Chip removal groove; 203. Water passage groove;

[0027] 3. Impeller;

[0028] 401. Inlet end; 402. Water storage area; 403. Water flow channel. Detailed Implementation

[0029] The principles and features of the present invention are described below with reference to the accompanying drawings. The examples given are only for explaining the present invention and are not intended to limit the scope of the present invention.

[0030] Example 1:

[0031] like Figure 1-5 As shown, a high-efficiency roughening milling head for glass surfaces includes a base 1, a grinding head 2, and multiple impellers 3. The grinding head 2 is mounted on the base shaft of the base 1. The grinding head 2 is cylindrical, and a grinding ring 201 is provided at the bottom end of the grinding head 2. The grinding ring 201 is an impregnated diamond ring.

[0032] The interior of the grinding head 2 is provided with a funnel-shaped water inlet end 401, a water storage area 402 and a water flow channel 403 around the axis of the grinding head 2. The water inlet end 401, the water storage area 402 and the water flow channel 403 are sequentially connected from the top end to the bottom end of the grinding head in the direction of water flow.

[0033] The impeller 3 is located below the water storage area 402. The two ends of the impeller 3 are fixedly connected to the grinding head 2 and the base shaft, respectively. Multiple impellers 3 are distributed at intervals around the axis of the grinding head 2.

[0034] The grinding ring 201 has a chip removal groove 202 axially formed on its outer side wall and a water passage groove 203 axially formed on its inner side wall. At least two chip removal grooves 202 are provided, spaced apart on the outer side wall of the grinding ring 201. At least two water passage grooves 203 are provided, spaced apart on the inner side wall of the grinding ring 201 and located at the water flow channel 403. The thickness of the grinding ring 201 is B, satisfying 0.4mm < B ≤ 1mm. The radial depth of the chip removal groove 202 is b1, satisfying 0mm < (B-b1) ≤ 0.5mm. The radial depth of the water passage groove 203 is b, satisfying 0mm < (Bb) ≤ 0.5mm. Furthermore, the cumulative total arc length of the ground material on the inner side wall of the grinding ring 201 is equal to the cumulative total arc length of the ground material on the outer side wall.

[0035] Figure 3 In the middle, the arrows indicate the direction of water inflow and flow.

[0036] It should be understood that the chip removal groove 202 and the water passage groove 203 divide the grinding ring 201 circumferentially into multiple grinding teeth. Figure 4 In the process, for each grinding tooth, L represents the arc length of the outer diameter of each tooth, and L1 represents the arc length of the inner diameter of each tooth, and L = L1.

[0037] In the above embodiment, the grinding head 2 is provided with a funnel-shaped water inlet end, a water storage area, and a water flow channel 4. The impeller 3 is located below the water storage area, which can reduce the atomization ratio of the impeller 3 and increase the cooling water flow rate. The outer side wall of the grinding ring 201 is provided with a chip removal groove, and the inner side wall is provided with a water passage groove, which is located at the water flow channel 4. The impeller 3 transmits torque, and when it rotates simultaneously with the grinding head 2, the impeller 3 helps to push the cooling water to the end face of the grinding ring 201, and then acts on the grinding area through the water passage groove to realize the external cooling to internal cooling mode. The chip removal speed is improved by the chip removal groove and the water passage groove distributed on the grinding ring 201. The water passage groove solves the problem of high passivation rate of diamond due to grinding heat and poor self-sharpening of the grinding head, resulting in low roughness of the roughened glass surface. It also reduces the contact area with the glass and avoids the problem of thin glass softening or breaking due to excessive pressure.

[0038] Based on Example 1, Example 2:

[0039] like Figure 3 As shown, the grinding head 2 is shaped like a trumpet with an angle θ to the side wall of the water storage area 402 and the axis of the grinding head 2, where 0° < θ < 45°; the grinding head 2 is also shaped like a trumpet with an angle θ to the side wall of the water flow channel 403 and the axis of the grinding head 2.

[0040] The grinding head 2 is shaped like a trumpet with the side wall of the inlet end 401 at an angle θ1 to the axis of the grinding head 2, where 0° < θ1 < 90°.

[0041] Preferably, θ1 is 45°.

[0042] In the above embodiment, the trumpet-shaped inlet end 401, the water storage area 402, and the water flow channel 403 overlap. Under the action of centrifugal force, there is an axial downward force, which helps to push the direction of water flow and increase the flow rate. A water storage area is formed on the impeller 3. The water storage area can effectively reduce the proportion of atomized water supplied by the impeller, which is conducive to the flow of water into the inner cavity of the end face grinding tool. Under the action of centrifugal force, the water entering the water storage area has an axial force component in the direction of the inner cavity of the grinding ring, which increases the flow rate and flow of cooling water into the inner cavity of the grinding ring.

[0043] Based on Example 1, Example 3:

[0044] like Figure 4-5 As shown, the cumulative total arc length of the grinding entity on the inner sidewall of the grinding ring 201 is equal to the cumulative total arc length of the grinding entity on the outer sidewall.

[0045] like Figure 3 As shown, the bottom end face of the grinding ring 201 is inclined from the outer side wall to the inner side wall from top to bottom, forming an axial height difference h, which satisfies h = 0.5 * diamond grit size.

[0046] In the above embodiments, during the processing, the end face of the milling head is in full contact with the workpiece. The height h is set so that the milling head has a shape-preserving effect. That is, during the processing, as the working layer is continuously consumed, the shape of the height h of the working layer end face is closer to a straight surface, which can always play a role in roughening and uniformizing.

[0047] Based on Examples 1 to 3, Example 4:

[0048] like Figure 1 , 2 As shown in Figure 4, the chip removal groove 202 is in the shape of a triangular prism. The chip removal groove 202 starts from the outer wall of the grinding ring 201 and extends into the interior of the grinding ring 201 in both the axial and radial directions. The groove opening of the chip removal groove 202 in the axial direction of the grinding ring 201 is connected to the diamond working layer, and the groove opening of the chip removal groove 202 in the radial direction of the grinding ring 201 is connected to the bottom end face of the grinding ring 201.

[0049] In the above embodiments, the chip removal speed is greatly improved by the chip removal groove 202.

[0050] Based on Examples 1 to 3, Example 5:

[0051] like Figure 1 , 2 As shown in Figure 4, the water channel 203 is in the shape of a triangular prism. The water channel 203 extends from the inner sidewall of the grinding ring 201 in both the axial and radial directions into the interior of the grinding ring 201. The opening of the water channel 203 in the axial direction of the grinding ring 201 is connected to the inner sidewall of the grinding ring 201, and the opening of the water channel 203 in the radial direction of the grinding ring 201 is connected to the bottom end face of the grinding ring 201.

[0052] In the above embodiment, the impeller 3 propels the bundled cooling water to the grinding ring 201, and the cooling water flows more effectively along the water channel 203 to the diamond working layer of the grinding ring 201, thereby increasing the water supply rate and enhancing the cooling effect.

[0053] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-efficiency roughening milling head for glass surfaces, characterized in that, It includes a base (1), a grinding head (2) and multiple impellers (3); the grinding head (2) is mounted on the base shaft of the base (1), the grinding head (2) is columnar, and the bottom end of the grinding head (2) is provided with a grinding ring (201), the grinding ring (201) is an impregnated diamond ring; The interior of the grinding head (2) is provided with a funnel-shaped water inlet end (401), a water storage area (402) and a water flow channel (403) around the axis of the grinding head (2). The water inlet end (401), the water storage area (402) and the water flow channel (403) are connected sequentially from the top end of the grinding head to the bottom end in the direction of water inlet. The impeller (3) is located below the water storage area (402). The two ends of the impeller (3) are fixedly connected to the grinding head (2) and the base shaft, respectively. Multiple impellers (3) are distributed around the axis of the grinding head (2) at intervals. The grinding ring (201) has a chip removal groove (202) axially formed on its outer side wall and a water passage groove (203) axially formed on its inner side wall. At least two chip removal grooves (202) are provided, spaced apart on the outer side wall of the grinding ring (201). At least two water passage grooves (203) are provided, spaced apart on the inner side wall of the grinding ring (201). The thickness of the grinding ring (201) is B, satisfying 0.4mm < B ≤ 1mm. The radial depth of the chip removal groove (202) is b1, satisfying 0mm < (B-b1) ≤ 0.5mm. The radial depth of the water passage groove (203) is b, satisfying 0mm < (Bb) ≤ 0.5mm. Furthermore, the cumulative total arc length of the ground material on the inner side wall of the grinding ring (201) is equal to the cumulative total arc length of the ground material on the outer side wall. The bottom end face of the grinding ring (201) is inclined from the outer side wall to the inner side wall from top to bottom, forming an axial height difference h, which satisfies h = 0.5 * diamond grit size.

2. The high-efficiency roughening milling head for glass surfaces according to claim 1, characterized in that, The grinding head (2) is shaped like a trumpet with the side wall of the water storage area (402) at an angle θ to the axis of the grinding head (2), where 0° < θ < 45°. The grinding head (2) is shaped like a trumpet with the side wall of the inlet end (401) at an angle θ 1 to the axis of the grinding head (2), where 0° < θ 1 < 90°.

3. The high-efficiency roughening milling head for glass surfaces according to any one of claims 1 to 2, characterized in that, The chip removal groove (202) is triangular prism-shaped; the chip removal groove (202) starts from the outer wall of the grinding ring (201) and extends into the interior of the grinding ring (201) in the axial and radial directions respectively, and the groove opening of the chip removal groove (202) in the axial direction of the grinding ring (201) is in communication with the diamond working layer, and the groove opening of the chip removal groove (202) in the radial direction of the grinding ring (201) is in communication with the bottom end face of the grinding ring (201).

4. The high-efficiency roughening milling head for glass surfaces according to any one of claims 1 to 2, characterized in that, The water channel (203) is triangular prism-shaped; the water channel (203) starts from the inner wall of the grinding ring (201) and extends into the interior of the grinding ring (201) in the axial and radial directions respectively, and the opening of the water channel (203) in the axial direction of the grinding ring (201) is in communication with the inner wall of the grinding ring (201), and the opening of the water channel (203) in the radial direction of the grinding ring (201) is in communication with the bottom end face of the grinding ring (201).

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