Compound adjustable double-ring diamond cup-shaped grinding wheel

Abstract

The application relates to a composite adjustable double-ring diamond cup-shaped grinding wheel and belongs to the technical field of glass edge grinding. The composite adjustable double-ring diamond cup-shaped grinding wheel comprises an inner wheel and an outer wheel sleeved on the inner wheel, a plurality of inner wheel cavity grooves are arranged on the inner wheel in a circumferential interval, a plurality of outer wheel cavity grooves are arranged on the outer wheel in a circumferential interval, inner wheel grinding pieces and outer wheel grinding pieces are respectively fixedly installed in the inner wheel cavity grooves and the outer wheel cavity grooves, the inner wheel grinding pieces and the outer wheel grinding pieces are arranged in a circumferential overlap and stagger mode, the inner wheel grinding pieces and the outer wheel grinding pieces are respectively elastic grinding pieces and rigid grinding pieces, and the outer peripheral surface profile of the part of the inner wheel grinding piece radially greater than or equal to the inner diameter of the outer wheel is an arc surface or an inclined surface. The application is favorable for avoiding the generation of steps in the grinding process, thereby avoiding the edge collapse of the workpiece.

Description

Technical Field

[0001] This invention relates to the field of glass edging technology, and in particular to a composite adjustable double-ring diamond cup-shaped grinding wheel. Background Technology

[0002] In existing glass edging technology, a motor drives two grinding wheels for grinding. The main spindle and the counterspindle are each connected to drive a rigid cup-shaped grinding wheel to perform grinding. The inner wheel is arranged in the inner cavity of the outer wheel. The outer wheel and the inner wheel can be linked mechanically and their axial positions can be adjusted to perform single-wheel or double-wheel processing. Usually, the abrasive grain size of the outer wheel is greater than or equal to that of the inner wheel. The grinding working surface of the two wheels will form a suitable grinding angle by the depth of cut.

[0003] A gap exists between the outer and inner wheels. If the grinding machine lacks online monitoring and dynamic automatic tool compensation (which is expensive), this gap will create a step when both wheels work simultaneously, easily causing chipping of the workpiece. When the wear rates of the outer or inner wheels are mismatched, i.e., the axial height of the wear angle between the outer and inner wheels does not match the required machining allowance, the depth of cut of each wheel needs to be adjusted to share the machining allowance, which essentially results in step-like grinding, making it difficult to stabilize and control the quality. When the depth of cut increases, the axial height difference between the inner and outer wheels needs to be adjusted, thus creating a step between the outer diameter of the inner wheel and the inner diameter of the outer wheel. During grinding, this causes impact grinding, which reduces grinding performance and grinding quality. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a composite adjustable double-ring diamond cup-shaped grinding wheel to solve the above-mentioned problem.

[0005] The technical solution of the present invention to solve the above-mentioned technical problems is as follows: A composite adjustable double-ring diamond cup-shaped grinding wheel includes: an inner wheel and an outer wheel sleeved on the inner wheel. The inner wheel is provided with a plurality of inner wheel grooves spaced apart circumferentially, and the outer wheel is provided with a plurality of outer wheel grooves spaced apart circumferentially. An inner wheel grinding disc and an outer wheel grinding disc are respectively fixedly installed in the inner wheel groove and the outer wheel groove. The inner wheel grinding disc and the outer wheel grinding disc overlap circumferentially and are staggered. The inner wheel grinding disc and the outer wheel grinding disc are respectively an elastic grinding disc and a rigid grinding disc. The portion of the inner wheel grinding disc that is radially larger than or equal to the inner diameter of the outer wheel has an outer circumferential surface profile that is arc-shaped or inclined.

[0006] The beneficial effects of this invention are as follows: the circumferential overlap of the inner and outer grinding discs means that there is a partial intersection between the inner and outer grinding discs in the radial direction. This intersection fills the gap between the outer and inner discs in the prior art, thereby avoiding the workpiece chipping caused by the existence of this gap. Furthermore, when the depth of cut increases and the axial height difference between the inner and outer discs needs to be adjusted, the portion of the inner grinding disc that is radially greater than or equal to the inner diameter of the outer disc can form an introductory section through the arc or inclined surface of the outer circumferential surface of the inner grinding disc, avoiding impact grinding caused by steps. The inner grinding disc is an elastic grinding disc, which is beneficial for the inner grinding disc at the intersection to make elastic contact with the workpiece surface when the relative axial height of the inner and outer discs is adjusted to adapt to the increase or decrease of the axial machining amount, avoiding workpiece chipping caused by rigid contact. Compared with the prior art, this invention is beneficial for avoiding the formation of steps during the grinding process, thereby avoiding workpiece chipping.

[0007] Based on the above technical solution, the present invention can be further improved as follows.

[0008] Furthermore, the outer wheel includes an outer wheel base and an outer wheel frame. The outer wheel frame is an annular structure fixedly installed on the end face of the outer wheel base, and a plurality of outer wheel grooves are circumferentially spaced on the outer wheel frame. The inner wheel includes an inner wheel base and an inner wheel frame. The inner wheel frame is an annular structure fixedly installed on the end face of the inner wheel base, and a plurality of inner wheel grooves are circumferentially spaced on the inner wheel frame.

[0009] The beneficial effects of adopting the above-mentioned further scheme are: the matrix is ​​conducive to providing support for the skeleton, and the skeleton is conducive to providing support for the grinding of the grinding disc.

[0010] Furthermore, both the inner wheel frame and the outer wheel frame are manufactured using additive manufacturing processes.

[0011] The beneficial effects of adopting the above-mentioned further solutions are: it helps to solve the problems of grinding disc layout and tilted assembly.

[0012] Furthermore, the outer diameter of the inner wheel frame is greater than or equal to the outer diameter of the outer wheel frame minus 2 / 3 times the ring width of the outer wheel frame, and less than or equal to the outer diameter of the outer wheel frame; the inner diameter of the inner wheel frame is greater than or equal to the inner diameter of the outer wheel frame minus 2 times the ring width of the outer wheel frame.

[0013] The beneficial effect of adopting the above-mentioned further scheme is that it helps to make the ring widths of the inner wheel skeleton and the outer wheel skeleton compatible.

[0014] Furthermore, the inner wheel frame is provided with multiple inner water channels spaced circumferentially, and the outer wheel frame is provided with multiple outer water channels spaced circumferentially. The inner water channels are connected to the outer water channels, and a water-blocking ring is fixedly installed on the outer circumferential surface of the outer wheel frame.

[0015] The beneficial effects of adopting the above-mentioned further solutions are: the inner and outer water channels are conducive to the flow of cooling water, thereby improving the cooling and chip removal effect of the grinding wheel. In addition, the inner water channel can also serve as the deformation space when the inner grinding disc undergoes elastic deformation. The water baffle ring helps to prevent unnecessary leakage caused by a large amount of cooling water flowing out from the inner diameter to the outer diameter of the grinding wheel under the action of centrifugal force, thus improving the utilization rate of cooling water.

[0016] Furthermore, the inner wheel skeleton is provided with a plurality of inner wheel cavity grooves at radial intervals for forming a plurality of inner wheel sub-rings that are sequentially nested in the radial direction. Each inner wheel sub-ring has an inner wheel grinding disc fixedly installed in a plurality of inner wheel cavity grooves. The diamond grain size of the inner wheel grinding discs in the plurality of inner wheel rings gradually increases from the inner diameter to the outer diameter of the inner wheel skeleton.

[0017] The beneficial effect of adopting the above-mentioned further scheme is that it helps to form a multi-wheel effect and further improves the grinding effect on the workpiece surface.

[0018] Furthermore, the inner wheel skeleton is circumferentially divided into multiple inner wheel skeleton segments, and multiple inner wheel cavity grooves are provided at intervals on the inner wheel skeleton segments. The inner wheel grinding discs are fixedly installed in the multiple inner wheel cavity grooves of each inner wheel skeleton segment, and the diamond grain size of the inner wheel grinding discs in each inner wheel skeleton segment gradually increases along the rotation direction of the grinding wheel.

[0019] The beneficial effect of adopting the above-mentioned further scheme is that it helps to divide the inner wheel into multiple grinding rings with different grit sizes in the circumferential direction, thereby improving the grinding effect on the workpiece surface.

[0020] Furthermore, the number of inner grinding discs is greater than or equal to the number of outer grinding discs.

[0021] The beneficial effect of adopting the above-mentioned further scheme is that it helps to improve the grinding quality of the workpiece surface when using diamond particles with relatively small particle size in conjunction with the inner wheel grinding disc.

[0022] Furthermore, the particle size of the diamond particles in the inner grinding wheel is smaller than or equal to the particle size of the diamond particles in the outer grinding wheel.

[0023] The beneficial effect of adopting the above-mentioned further scheme is that it allows the workpiece's grinding surface to be ground first by coarse diamond and then by fine diamond, thereby improving the grinding quality of the workpiece's grinding surface.

[0024] Furthermore, the inner grinding wheel and the outer grinding wheel are inclined backward along the rotation direction of the grinding wheel, and the included angles between the inner grinding wheel and the outer grinding wheel and the vertical reference plane of the grinding wheel are both between 0 and 45 degrees.

[0025] The beneficial effect of adopting the above-mentioned further scheme is that it helps the inner and outer grinding discs to have the function of "resetting" forward along the rotation direction under the action of centrifugal force. Attached Figure Description

[0026] Figure 1 The prior art processing diagram provided for the background of this invention Figure 1 ; Figure 2 for Figure 1 Enlarged view of region A in the middle; Figure 3 The prior art processing diagram provided for the background of this invention Figure 2 ; Figure 4 for Figure 3 Enlarged view of region B in the middle; Figure 5 This is a schematic diagram showing a partial cross-section of the overall structure provided in Embodiment 1 of the present invention; Figure 6 for Figure 5 Enlarged schematic diagram of region D in the middle; Figure 7 This is a schematic diagram of the overall structure of the outer wheel frame after a water-blocking ring is fixedly installed on the outer peripheral surface of the outer wheel frame provided in Embodiment 1 of the present invention. Figure 8 for Figure 7 Enlarged diagram of region E in the middle; Figure 9 This is a schematic diagram of the overall structure provided in Embodiment 2 of the present invention; Figure 10 for Figure 9 Enlarged schematic diagram of region F in the middle; Figure 11 This is a side view of the overall structure provided in Embodiment 1 of the present invention; Figure 12 for Figure 11 Enlarged schematic diagram of region G in the middle; Figure 13 Processing diagram provided in the embodiments of the present invention Figure 1 ; Figure 14 for Figure 13 Enlarged schematic diagram of region J in the middle; Figure 15 Processing diagram provided in the embodiments of the present invention Figure 2 ; Figure 16 for Figure 15 Enlarged diagram of region K in the middle; Figure 17 This is a schematic diagram of the inner and outer grinding discs before axial adjustment. Figure 18 This is a schematic diagram showing the inner and outer grinding discs after axial adjustment.

[0027] in, Figure 1 , Figure 3 , Figure 13 and Figure 15 The arrows in the diagram indicate the direction of workpiece displacement.

[0028] The attached diagram lists the components represented by each number as follows: 1. Inner wheel; 2. Outer wheel; 3. Water-retaining ring; 11. Inner wheel base; 12. Inner wheel frame; 13. Inner wheel grinding disc; 14. Inner water channel; 21. Outer wheel base; 22. Outer wheel frame; 23. Outer wheel grinding disc; 24. Outer water channel; 131. First inner wheel grinding disc; 132. Second inner wheel grinding disc; 133. Third inner wheel grinding disc. Detailed Implementation

[0029] The principles and features of the present invention are described below. 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 Figures 5 to 8 , Figure 11 and Figure 12 As shown, this embodiment provides a composite adjustable double-ring diamond cup-shaped grinding wheel, including: an inner wheel 1 and an outer wheel 2 sleeved on the inner wheel 1. The inner wheel 1 is circumferentially spaced with a plurality of inner wheel grooves, and the outer wheel 2 is circumferentially spaced with a plurality of outer wheel grooves. An inner wheel grinding disc 13 and an outer wheel grinding disc 23 are respectively fixedly installed in the inner wheel grooves and the outer wheel grooves. The inner wheel grinding disc 13 and the outer wheel grinding disc 23 are circumferentially overlapping and staggered. The inner wheel grinding disc 13 and the outer wheel grinding disc 23 are respectively an elastic grinding disc and a rigid grinding disc. The portion of the inner wheel grinding disc 13 that is radially larger than or equal to the inner diameter of the outer wheel 2 has an outer circumferential surface profile that is arc-shaped or inclined.

[0032] It should be noted that, regarding the background technology, the running-in angle refers to the tilt angle between the grinding surface of the grinding wheel and the workpiece surface caused by grinding. Before using the grinding wheel, the manufacturer will usually set an initial running-in angle in advance. As the grinding surface of the grinding wheel and the workpiece surface continue to grind, the preset initial running-in angle will automatically form a new running-in angle that is suitable due to factors such as the structure and material between the grinding wheel and the workpiece. like Figure 1 and Figure 2As shown, due to the gap between the outer and inner wheels, during the grinding process, this gap will form a step with an axial height of h1. As the workpiece continues to move, this step comes into contact with the rigid grinding disc in the outer wheel, which can easily cause the workpiece to chip. Since the workpieces in this embodiment and the background are all glass, even a small rigid collision may cause the workpiece to chip extensively. like Figure 3 and Figure 4 As shown, while there is a gap between the outer and inner wheels, the axial grinding amount of the workpiece (i.e., the required grinding angle axial height) increases. Therefore, the inner and outer wheels move away from each other axially, so that the depth of cut formed by the inner and outer wheels matches the new axial grinding amount. At this time, a step with an axial height of h2 will be generated between the inner and outer wheels during the grinding process. As the workpiece continues to move, this step contacts the rigid grinding disc in the outer wheel, which can easily cause chipping of the workpiece. There are three situations where the workpiece axial grinding amount (i.e. the required grinding angle axial height) decreases while there is a gap between the outer wheel and the inner wheel: (1) the inner wheel and the outer wheel are processed at the same time, but only part of the inner wheel and / or part of the outer wheel are used for processing. At this time, the gap between the outer wheel and the inner wheel will also participate in the processing, and will also form a step with an axial height of h1, which will lead to chipping; (2) the inner wheel is processed alone; (3) the outer wheel is processed alone. In cases (2) and (3), although no step is generated, the working surface formed by the two wheels cannot fully participate in grinding, the ring width of the working surface that actually participates is narrowed, and the grinding efficiency and quality are not easy to control. In this embodiment, "staggered arrangement" means that at least one inner grinding disc 13 is arranged between any two adjacent outer grinding discs 23 in the circumferential direction.

[0033] The beneficial effects of this embodiment are as follows: the circumferential overlap of the inner and outer grinding discs means that there is a partial intersection between the inner and outer grinding discs in the radial direction. This intersection fills the gap between the outer and inner discs in the prior art, thereby avoiding the workpiece chipping caused by the existence of this gap. Furthermore, when the depth of cut increases and the axial height difference between the inner and outer discs needs to be adjusted, the portion of the inner grinding disc that is radially greater than or equal to the inner diameter of the outer disc can form an introductory section through the arc or inclined surface of the outer circumference of the inner grinding disc, avoiding impact grinding caused by steps. The inner grinding disc is an elastic grinding disc, which is beneficial for the inner grinding disc at the intersection to make elastic contact with the workpiece surface when the relative axial height of the inner and outer discs is adjusted to adapt to the increase or decrease of the axial machining amount, avoiding workpiece chipping caused by rigid contact. Compared with the prior art, the present invention is beneficial for avoiding the generation of steps during the grinding process, thereby avoiding workpiece chipping.

[0034] It should be noted that: Figure 17As shown, H5 represents the break-in angle at the first depth of cut. This break-in angle is actually the axial difference between the inner and outer diameters of the grinding wheel's working surface. Figure 18 As shown, H6 represents the running-in angle at the second depth of cut. The second depth of cut is the depth of cut when the axial height of the inner wheel 1 is increased based on the first depth of cut, so that the inner wheel 1 and the outer wheel 2 are axially separated. At this time, the M region represents the part of the inner wheel grinding disc 13 that is radially greater than or equal to the inner diameter of the outer wheel 2. The outer circumferential surface of this part is an arc surface or a slope. After the axial height of the inner wheel 1 is adjusted, the running-in angle of this grinding surface is suitable for the second depth of cut. Since this grinding surface is an arc surface or a slope, the step of the prior art can be eliminated. The inner grinding disc 13 serves two purposes: the portion smaller than the inner diameter of the outer wheel 2 is used for fine-grain grinding; the portion larger than or equal to the inner diameter of the outer wheel 2 is mainly used to eliminate steps. Therefore, when the axial height of the inner wheel 1 is increased, the portion larger than or equal to the inner diameter of the outer wheel 2 forms a circular arc or inclined grinding surface, which can eliminate steps. The break-in angle is determined by the depth of cut during machining. Regardless of the factory setting, it will naturally form after the "break-in" process. When the depth of cut changes during machining, especially when the depth of cut is increased, the previously formed break-in angle is not suitable for grinding and needs to be adjusted. The design of the inner wheel grinding disc 13 in this case is designed to alleviate the unsuitability after adjusting the depth of cut. After the grinding wheel breaks in to the break-in angle corresponding to the new depth of cut, it enters normal grinding.

[0035] Preferred, such as Figure 5 and Figure 6 As shown, the outer wheel 2 includes an outer wheel base 21 and an outer wheel frame 22. The outer wheel frame 22 is an annular structure fixedly installed on the end face of the outer wheel base 21, and a plurality of outer wheel grooves are circumferentially spaced on the outer wheel frame 22. The inner wheel 1 includes an inner wheel base 11 and an inner wheel frame 12. The inner wheel frame 12 is an annular structure fixedly installed on the end face of the inner wheel base 11, and a plurality of inner wheel cavity grooves are circumferentially spaced on the inner wheel frame 12.

[0036] It should be noted that in this embodiment, the end of the outer wheel base 21 away from the outer wheel frame 22 and the end of the inner wheel base 11 away from the inner wheel frame 12 are coaxially and fixedly connected to one end of the rotating outer shaft and one end of the rotating inner shaft, respectively (the rotating inner shaft and the rotating outer shaft are the main shaft and the secondary shaft in the prior art). The inner wheel base 11 is disposed in the inner cavity of the outer wheel base 21, and the rotating inner shaft is disposed inside the rotating outer shaft. The axial relative position of the inner wheel 1 and the outer wheel 2 is adjusted by the relative axial displacement of the rotating outer shaft and the rotating inner shaft. This scheme is the same as the scheme for adjusting the axial position of the inner wheel and the outer wheel in the prior art and belongs to the prior art. Therefore, its specific structure is not illustrated.

[0037] The advantages of adopting the above preferred scheme are: the matrix helps to provide support for the skeleton, and the skeleton helps to provide support for the grinding of the grinding disc.

[0038] Preferably, both the inner wheel frame 12 and the outer wheel frame 22 are manufactured using additive manufacturing processes.

[0039] The advantages of adopting the above-mentioned preferred solution are: it helps to solve the problems of grinding disc layout and tilted assembly.

[0040] Preferably, the outer diameter Φ3 of the inner wheel frame 12 is greater than or equal to the outer diameter Φ1 of the outer wheel frame 22 minus 2 / 3 times the ring width B of the outer wheel frame 22, and less than or equal to the outer diameter Φ1 of the outer wheel frame 22; the inner diameter Φ4 of the inner wheel frame 12 is greater than or equal to the inner diameter Φ2 of the outer wheel frame 22 minus 2 times the ring width B of the outer wheel frame 22.

[0041] The advantage of adopting the above preferred scheme is that it helps to match the ring width of the inner wheel frame and the outer wheel frame.

[0042] Preferred, such as Figures 6 to 8 As shown, the inner wheel frame 12 is provided with a plurality of inner water channels 14 at intervals around the circumference, and the outer wheel frame 22 is provided with a plurality of outer water channels 24 at intervals around the circumference. The inner water channels 14 are connected to the outer water channels 24, and a water baffle ring 3 is fixedly installed on the outer circumferential surface of the outer wheel frame 22.

[0043] It should be noted that, in this embodiment, as Figure 8 As shown, each inner water channel 14 is composed of multiple strip-shaped channels spaced apart axially. Each strip-shaped channel connects the inner and outer diameters of the inner wheel frame 12. The outer water channel 24 connects the inner and outer diameters of the outer wheel frame 22 and is axially connected to both ends of the outer wheel frame 22. The structure of the inner water channel 14 in other preferred embodiments is the same as the structure of the outer water channel 24 in this embodiment.

[0044] The advantages of adopting the above-mentioned preferred scheme are: the inner and outer water channels are beneficial as channels for the flow of cooling water, thereby improving the cooling and chip removal effect of the grinding wheel. In addition, the inner water channel can also serve as the deformation space when the inner grinding disc undergoes elastic deformation. The water baffle ring helps to prevent unnecessary leakage caused by a large amount of cooling water flowing out from the inner diameter to the outer diameter of the grinding wheel under the action of centrifugal force, thus improving the utilization rate of cooling water.

[0045] Preferably, the number of inner grinding discs 13 is greater than or equal to the number of outer grinding discs 23.

[0046] The advantages of adopting the above preferred scheme are: it helps to improve the grinding quality of the workpiece surface when using diamond particles with relatively small particle size in conjunction with the inner wheel grinding disc.

[0047] Preferably, the diamond particle size in the inner grinding wheel 13 is less than or equal to the diamond particle size in the outer grinding wheel 23.

[0048] It should be noted that in this embodiment, as the workpiece continuously moves linearly and the grinding wheel rotates circumferentially during grinding, the grinding surface of the workpiece gradually moves from the outer edge of the outer wheel 2 to the inner edge of the inner wheel 1. During this process, the grinding surface of the workpiece is ground off in the axial direction, and the grinding occurs from one end of the grinding surface to the other end. Therefore, during the grinding process, the workpiece will first be ground by the diamond with a relatively large particle size in the outer wheel 2, and then by the diamond with a relatively small particle size in the inner wheel 1. In this embodiment, the inner wheel grinding disc 13 is an elastic grinding disc, which consists of a grinding disc substrate and an abrasive layer. The grinding disc substrate is made of elastic materials such as spring steel, polymer, or composite materials. The grinding disc substrate is divided into an installation section, an elastic transition section, and a working section (the three are essentially integrated). The installation section and the working section are respectively located at both ends of the elastic transition section. The abrasive layer includes diamond particles and a binder. Multiple diamond particles are circumferentially (with the grinding wheel as the orientation reference) fixed in a single layer on one side wall of the working section in front of the grinding wheel's rotation direction by the binder. The installation section is fixedly installed on the end face of the inner wheel substrate 11. The inner wheel cavity groove in the inner wheel frame 12 tightly wraps the working section and the abrasive layer.

[0049] The advantages of adopting the above-mentioned preferred scheme are: it facilitates the grinding of the workpiece surface by first grinding with coarse diamond and then with fine diamond, thereby improving the grinding quality of the workpiece surface.

[0050] Preferred, such as Figure 11 and Figure 12As shown, the inner grinding disc 13 and the outer grinding disc 23 are inclined backward along the rotation direction of the grinding wheel, and the included angle θ between the inner grinding disc 13 and the outer grinding disc 23 and the vertical reference plane of the grinding wheel is between 0 and 45 degrees.

[0051] The beneficial effect of adopting the above-mentioned preferred scheme is that it helps the inner and outer grinding discs to have the function of "resetting" forward along the rotation direction under the action of centrifugal force.

[0052] Example 2.

[0053] like Figure 9 and Figure 10 As shown, based on Embodiment 1, the inner wheel skeleton 12 in this embodiment is provided with a plurality of inner wheel cavity grooves at radial intervals, which are used to form a plurality of inner wheel sub-rings that are sequentially nested in the radial direction. Each inner wheel ring has an inner wheel grinding disc 13 fixedly installed in a plurality of inner wheel cavity grooves. The diamond grain size of the inner wheel grinding disc 13 in the plurality of inner wheel rings gradually increases from the inner diameter to the outer diameter of the inner wheel skeleton 12.

[0054] It should be noted that: in this embodiment there are three inner wheel rings, and the inner wheel grinding plates 13 installed in the three inner wheel rings are the first inner wheel grinding plate 131, the second inner wheel grinding plate 132 and the third inner wheel grinding plate 133, respectively. The diamond particle size in the first inner wheel grinding plate 131, the second inner wheel grinding plate 132 and the third inner wheel grinding plate 133 gradually increases from the inner diameter to the outer diameter of the inner wheel skeleton 12.

[0055] The advantages of adopting the above preferred scheme are: it facilitates the formation of a multi-wheel effect and further improves the grinding effect on the workpiece surface.

[0056] Example 3.

[0057] Based on Embodiment 1, in this embodiment, the inner wheel skeleton 12 is divided into multiple inner wheel skeleton segments in the circumferential direction. Multiple inner wheel cavity grooves are provided at intervals on the inner wheel skeleton segments. The inner wheel grinding disc 13 is fixedly installed in each of the multiple inner wheel cavity grooves in each inner wheel skeleton segment. The diamond grain size of the inner wheel grinding disc 13 in each inner wheel skeleton segment gradually increases along the rotation direction of the grinding wheel.

[0058] The beneficial effect of adopting the above preferred scheme is that it helps to divide the inner wheel into multiple grinding rings with different grit sizes in the circumferential direction, thereby improving the grinding effect on the workpiece surface.

[0059] like Figure 13 and Figure 14 As shown, compared to Figure 1 and Figure 2In terms of the prior art, in this embodiment, the gap between the inner wheel and the outer wheel is filled by the inner wheel grinding disc 13 of the inner wheel, and the inner wheel grinding disc 13 is an elastic grinding disc. Therefore, during the grinding process, no step is formed between the inner wheel and the outer wheel. The total axial grinding amount (i.e., the total depth of cut) H of the workpiece is equal to the sum of the axial grinding amount (i.e., the depth of cut) H2 of the inner wheel and the axial grinding amount (i.e., the depth of cut) H1 of the outer wheel. like Figure 13 and Figure 14 As shown, compared to Figure 3 and Figure 4 In the prior art, in this embodiment, the gap between the inner and outer wheels is filled by the inner wheel grinding disc 13 of the inner wheel, and the inner and outer wheels are axially separated so that the new axial grinding amount is adapted to the depth of cut formed by the inner and outer wheels. At this time, although the inner wheel grinding disc 13 protrudes from the original grinding surface in the axial direction, when the inner wheel grinding disc 13 contacts the workpiece, the inner wheel grinding disc 13 undergoes elastic deformation and will not produce rigid impact, thus preventing the workpiece from chipping. In addition, with continuous grinding, the grinding angle formed at the intersection of the inner wheel and the grinding angle formed at the intersection of the outer wheel are two arcs connected by a transition in the cross-sectional view. The new axial grinding amount is equal to the sum of the axial grinding amount H3 before adjustment and the newly added axial grinding amount H4 of the inner wheel.

[0060] In addition, when processing thick or medium-thick glass, the outer wheel can be used for processing alone, or the outer wheel and inner wheel can be used together for processing. This is beneficial for processing large allowances and ensures that the edge chipping is moderate. When processing thin glass, the inner wheel is used for processing alone. This is beneficial for the fine-grained ring to always have a fully matched running angle, ensuring that the edge chipping of thin glass meets the requirements. The aforementioned dual-wheel configuration allows for a single motor with dual wheels and adjustable grit sizes. This avoids issues such as glass thickness variations, processing volume variations, and differences in wear rates between the two wheels, which can easily create steps and cause edge chipping. It also eliminates the need to replace the grinding wheel with the appropriate grit size and eliminates the need for a break-in period after parameter adjustments. This reduces the number of motors required and increases grinding efficiency. Because the fine-grained inner ring has elastic teeth, it not only does not hinder the work of the outer ring but also helps reduce surface roughness. It fully utilizes the space of the ring width, achieving functions that are difficult to achieve with rigid wheels in existing technology, thus significantly improving efficiency and grinding quality.

[0061] This embodiment can also be achieved by injection molding the skeleton and assembling it; after simple adaptive adjustments, it is also suitable for electroplated grinding discs and ceramic grinding discs; the outer wheel grinding disc in this embodiment can also be made of high-strength elastic grinding discs.

[0062] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0063] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0064] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0065] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "over," and "on top" of the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0066] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0067] Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those skilled in the art can make changes, modifications, substitutions and variations to the above embodiments within the scope of the present invention.

Claims

1. A composite adjustable double-ring diamond cup-shaped grinding wheel, characterized in that, include: An inner wheel (1) and an outer wheel (2) sleeved on the inner wheel (1) are provided. The inner wheel (1) is provided with multiple inner wheel grooves spaced apart in the circumferential direction. The outer wheel (2) is provided with multiple outer wheel grooves spaced apart in the circumferential direction. An inner wheel grinding disc (13) and an outer wheel grinding disc (23) are fixedly installed in the inner wheel groove and the outer wheel groove, respectively. The inner wheel grinding disc (13) and the outer wheel grinding disc (23) overlap and are staggered in the circumferential direction. The inner wheel grinding disc (13) and the outer wheel grinding disc (23) are elastic grinding discs and rigid grinding discs, respectively. The inner wheel grinding disc (13) is radially larger than or equal to the inner diameter of the outer wheel (2). Its outer circumferential surface profile is an arc surface or a slope surface.

2. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 1, characterized in that, The outer wheel (2) includes an outer wheel base (21) and an outer wheel frame (22). The outer wheel frame (22) is an annular structure fixedly installed on the end face of the outer wheel base (21). A plurality of outer wheel grooves are circumferentially spaced on the outer wheel frame (22). The inner wheel (1) includes an inner wheel base (11) and an inner wheel frame (12). The inner wheel frame (12) is an annular structure fixedly installed on the end face of the inner wheel base (11). A plurality of inner wheel cavity grooves are circumferentially spaced on the inner wheel frame (12).

3. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 2, characterized in that, Both the inner wheel frame (12) and the outer wheel frame (22) are manufactured by additive manufacturing process.

4. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 2, characterized in that, The outer diameter of the inner wheel frame (12) is greater than or equal to the outer diameter of the outer wheel frame (22) minus 2 / 3 times the ring width of the outer wheel frame (22), and less than or equal to the outer diameter of the outer wheel frame (22); the inner diameter of the inner wheel frame (12) is greater than or equal to the inner diameter of the outer wheel frame (22) minus 2 times the ring width of the outer wheel frame (22).

5. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 2, characterized in that, The inner wheel frame (12) is provided with multiple inner water channels (14) spaced apart in the circumferential direction, and the outer wheel frame (22) is provided with multiple outer water channels (24) spaced apart in the circumferential direction. The inner water channels (14) are connected to the outer water channels (24), and a water baffle (3) is fixedly installed on the outer circumferential surface of the outer wheel frame (22).

6. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 2, characterized in that, The inner wheel skeleton (12) is provided with a plurality of inner wheel cavity grooves at radial intervals for forming a plurality of inner wheel sub-rings in the radial direction. Each inner wheel sub-ring has an inner wheel grinding disc (13) fixedly installed in a plurality of inner wheel cavity grooves. The diamond grain size of the inner wheel grinding disc (13) in the plurality of inner wheel rings gradually increases from the inner diameter to the outer diameter of the inner wheel skeleton (12).

7. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 2, characterized in that, The inner wheel skeleton (12) is divided into multiple inner wheel skeleton segments in the circumferential direction. Multiple inner wheel cavity grooves are provided at intervals on the inner wheel skeleton segments. The inner wheel grinding discs (13) are fixedly installed in the multiple inner wheel cavity grooves of each inner wheel skeleton segment. The diamond particle size of the inner wheel grinding discs (13) in each inner wheel skeleton segment gradually increases along the rotation direction of the grinding wheel.

8. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 1, characterized in that, The number of inner grinding discs (13) is greater than or equal to the number of outer grinding discs (23).

9. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 1, characterized in that, The particle size of the diamond particles in the inner grinding wheel (13) is less than or equal to the particle size of the diamond particles in the outer grinding wheel (23).

10. The composite adjustable double-ring diamond cup-shaped grinding wheel according to claim 1, characterized in that, The inner grinding disc (13) and the outer grinding disc (23) are inclined backward along the rotation direction of the grinding wheel, and the included angle between the inner grinding disc (13) and the outer grinding disc (23) and the vertical reference plane of the grinding wheel is between 0 and 45 degrees.

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