Cutter for CNC polishing equipment and CNC polishing equipment

Abstract

The utility model discloses a cutter for CNC (computer numerical control) polishing equipment, which comprises a cutter bar, a profiling cutter, a drain hole and a plurality of drain grooves, the profiling cutter is a cylinder with a concave side surface, the top surface and the bottom surface of the profiling cutter are circles with the same diameter, the side surface of the profiling cutter is a concave curved surface, the bottom surface of the profiling cutter is fixed at the end of the cutter bar, and the drain hole is communicated with the drain groove. A drain hole is formed in the top surface of the profiling tool towards the bottom surface, the diameter of the drain hole is smaller than the minimum diameter of the side face, a drain groove is formed in the side face of the profiling tool towards the drain hole, one end of the drain groove is located in the top surface, and the length of the drain groove is smaller than the height of the profiling tool. According to the cutter for the CNC polishing equipment, the sapphire machining roughness and the damage layer depth are smaller, the service life of the cutter is longer, the material cost is lower, and the economic benefit is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of sapphire polishing, in particular to a tool used for CNC polishing equipment. Background Art

[0002] Sapphire is an important inorganic non-metallic material with advantages such as high hardness, high melting point, stable chemical properties, and excellent mechanical and optical properties. Therefore, it is widely used in many industries, especially in the field of optics. Sapphire products are generally small in size and have relatively complex structures, and their processing generally requires high precision. CNC machining offers advantages such as stable processing quality, high precision, and high production efficiency. It can process a variety of complex structures, and therefore is increasingly used in the field of sapphire product processing.

[0003] CNC polishing of sapphire products requires a variety of cutting tools. Traditional tools are typically sintered knives embedded with corundum, 3M polishing knives, and other tools. The diameter of the corundum is generally 0.02mm-0.04mm, resulting in significant surface roughness and damage depth on the processed sapphire surface. Roughness Sa exceeds 300nm, Sz exceeds 15,000nm, and the damage depth exceeds 0.02mm, resulting in a decline in sapphire product performance.

[0004] Based on this, a new solution is needed. Utility Model Content

[0005] The main purpose of the utility model is to provide a tool for CNC polishing equipment to reduce the surface roughness and damage layer depth of CNC polished sapphire, so as to address the problem that the existing CNC polishing of sapphire usually uses sintering knives with diamond grit embedded on the surface, 3M polishing knives and other tools, which leads to large surface roughness and damage layer depth of the processed parts and seriously affects the performance of sapphire products.

[0006] To achieve the above-mentioned purpose, the utility model provides a tool for CNC polishing equipment, comprising a tool rod, a profiling tool, a drainage hole and a plurality of drainage grooves, wherein the profiling tool is a cylinder with a concave side surface, the top surface and the bottom surface of the profiling tool are circles with equal diameters, the side surface of the profiling tool is a concave curved surface, the bottom surface of the profiling tool is fixed to the end of the tool rod, the top surface of the profiling tool is provided with the drainage hole toward the bottom surface, the diameter of the drainage hole is smaller than the minimum diameter of the side surface, the side surface of the profiling tool is provided with the drainage groove toward the direction of the drainage hole, one end of the drainage groove is located on the top surface and the length of the drainage groove is smaller than the height of the profiling tool.

[0007] In the tool for CNC polishing equipment provided by the present invention, the side surface of the profiling tool is covered with a resin layer containing corundum.

[0008] In the tool for CNC polishing equipment provided by the present invention, the particle size of the diamond abrasive is 0.005 mm-0.006 mm.

[0009] In the tool for CNC polishing equipment provided by the present invention, the tool includes four drainage grooves.

[0010] According to another aspect of the present invention, a CNC polishing device is provided, comprising the tool for the CNC polishing device as described above.

[0011] The tool for CNC polishing equipment provided by the utility model has the following beneficial effects: the side shape of the tool for CNC polishing equipment provided by the utility model is highly consistent with the part to be processed, which can achieve precise processing effect and ensure the smoothness and quality of the sapphire surface; the design of the drainage hole and the drainage groove can effectively discharge the chips generated during the processing, reduce the interference with the processing surface, and improve the processing efficiency; at the same time, the coolant directly enters the interior of the tool body through the drainage hole and the drainage groove, effectively taking away the heat generated during the cutting process, reducing the tool temperature, thereby reducing the wear caused by overheating and increasing the service life of the tool. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only embodiments of the present invention. Those skilled in the art can obtain other drawings based on the provided drawings without inventive work.

[0013] Figure 1 The figure shows a schematic structural diagram of a tool for CNC polishing equipment provided by one embodiment of the present utility model;

[0014] Figure 2 Shown is a schematic diagram of a product processed using a tool for CNC polishing equipment provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0015] To facilitate understanding of the present invention, a more comprehensive description of the present invention will be provided below with reference to the accompanying drawings. The drawings illustrate exemplary embodiments of the present invention. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and comprehensive understanding of the present invention.

[0016] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention.

[0017] Figure 1 The figure shows a schematic diagram of the structure of a tool for CNC polishing equipment provided by an embodiment of the present invention. Figure 1 As shown, the tool provided by the present invention for CNC polishing equipment includes a tool bar 100, a profiling tool 200, a drainage hole 300, and a plurality of drainage grooves 400. The profiling tool 200 is used to process the portion of sapphire to be processed. It is a cylinder with concave side surfaces. The top surface 220 and the bottom surface 210 of the profiling tool 200 are circles of equal diameter. The side surface 230 of the profiling tool 200 is a concave curved surface. That is, the diameter of the cross-section of the side surface 230 decreases and then increases from the top surface to the bottom surface so that the shape of the side surface 230 is compatible with the shape of the portion to be processed. Designing the side curve of the profiling tool according to the shape of the sapphire to be processed can improve processing efficiency and surface quality. The bottom surface 210 of the profiling tool 200 is fixed to the end of the tool arbor 100, securing the profiling tool via the tool arbor 100. A drainage hole 300 is defined on the top surface 220 of the profiling tool 200, facing the bottom surface 210. The diameter of the drainage hole 300 is smaller than the minimum diameter of the side surface 230, meaning that the drainage hole 300 is located in the center of the profiling tool. A drainage groove 400 is defined on the side surface 230 of the profiling tool 200, facing the drainage hole 300. One end of the drainage groove 400 is located on the top surface 220, and the length of the drainage groove 400 is smaller than the height of the profiling tool 200. The drainage groove 400 is defined on the side of the profiling tool 200 but does not extend through the side surface in the height direction of the tool. The drainage groove and drainage hole allow coolant to be flushed out of debris generated during CNC sapphire machining, while also allowing coolant to enter the tool body, cooling it and extending tool life.

[0018] In this embodiment, the side shape of the profiling tool is highly consistent with the part to be processed, which can achieve precise processing results and ensure the smoothness and quality of the sapphire surface; the design of the drainage holes and drainage grooves can effectively discharge the chips generated during the processing, reduce interference with the processed surface, and improve processing efficiency; at the same time, the coolant directly enters the tool body through the drainage holes and drainage grooves, effectively taking away the heat generated during the cutting process, reducing the tool temperature, thereby reducing wear caused by overheating and increasing the service life of the tool.

[0019] Furthermore, in one embodiment of the present invention, the side 230 of the profiling tool 200 is coated with a resin layer containing corundum, with the corundum having a particle size of 0.005mm-0.006mm. By coating the sides of the profiling tool and the sapphire portion to be processed with a resin layer containing fine corundum, the surface roughness and damage layer of the sapphire portion to be processed are reduced, thereby improving the performance of the sapphire product. Specifically, a tool for CNC machining sapphire is manufactured using a mixture of resin powder, resin bond, diamond, abrasive particles, and filler, which is then heated and cured before being finished to create a finished blade surface. In this embodiment, the side 230 of the profiling tool is covered with a resin layer containing corundum. As a high-hardness material, corundum can effectively cut sapphire and reduce damage to the material during processing. The fine particle size of the corundum (0.005mm-0.006mm) gives the tool excellent grinding performance. The use of resin powder and binder allows the corundum particles to be firmly attached to the tool surface and solidified through heat treatment to form a tough blade surface, ensuring that it is not easy to fall off during high-intensity processing while maintaining the stability and wear resistance of the tool. Due to the use of extremely fine corundum, the tool can achieve a lower surface roughness during the processing process, with an Sa value of no more than 50nm and an Sz value of no more than 2000nm. This smooth surface can reduce subsequent processing steps and improve production efficiency. During processing, the depth of the damage layer of the tool on the substrate does not exceed 0.005mm, ensuring that the physical and chemical properties of the sapphire material are not affected and improving the reliability of the finished product. At the same time, maintaining a small damage layer helps to enhance the material's compressive strength and scratch resistance, making the sapphire product perform well in practical applications.

[0020] Furthermore, in one embodiment of the present invention, the tool includes four drainage grooves 400, which are distributed in a cross shape on the top surface of the tool. As a result, coolant can be used to flush out the debris generated by CNC machining of sapphire, while the coolant can enter the interior of the tool body to cool the tool body and extend the tool life. In this embodiment, the layout of the drainage grooves enables the coolant to effectively flush and discharge the debris generated during the CNC machining of sapphire, keeping the machining area clean and reducing the impact of the debris on the tool cutting performance; by timely discharging the debris, blockage between the tool and the workpiece can be prevented, thereby maintaining a stable cutting process and improving machining accuracy; the drainage groove design allows the coolant to flow smoothly and enter the interior of the tool body for efficient cooling. This continuous cooling effect can significantly reduce the tool temperature and prevent tool wear caused by overheating. Effective cooling not only improves the durability of the tool, but also reduces the cost of frequent tool replacement, thereby improving overall production efficiency; reasonable cooling and chip removal management ensures that the tool operates within a stable temperature range, thereby improving the consistency and reliability of the cutting process. By adding four cross-shaped drainage grooves on the top surface of the tool, not only the chips generated during the machining process are effectively managed and the flow of coolant is optimized, but also the service life of the tool and the machining quality are improved.

[0021] Figure 2 The figure shows a schematic diagram of a product processed by a tool provided by an embodiment of the present invention for a CNC polishing device. Figure 2 As shown, when in use, first put the sapphire product 20 into the fixture 30 to fix the sapphire product; then Figure 1 The tool 10 shown is fixed on the CNC machine, and then the positioning and tool setting are detected, and the processing program is started to start processing the sapphire product. Since the surface of the tool is covered with a resin layer containing fine diamond, the surface of the processed part of the sapphire can obtain smaller roughness and damage layer, thereby improving the performance of the sapphire product. At the same time, the profiling contour structure is consistent with the processing rotation direction, which results in less resistance, less tool wear, longer tool life, lower tool change frequency, and more material cost savings. Subsequently, the coolant nozzle 40 is opened, and while processing the sapphire product, the coolant is sprayed to cool the tool 10 and the sapphire product 20 to prevent the tool from burning and the product from breaking due to excessive temperature. After the sapphire product is processed, the above processing process is repeated.

[0022] The tool for CNC polishing equipment provided by the utility model has the following advantages:

[0023] 1. The profiling tool is designed specifically for the shape of the sapphire being machined, ensuring that the side curve of the tool perfectly matches the workpiece. This design effectively reduces errors during machining and ensures that the polished surface achieves the desired smoothness and reflectivity. High-precision machining not only improves product quality but also reduces the need for subsequent processing, thereby increasing overall production efficiency.

[0024] 2. Through the design of drainage grooves and drainage holes, coolant can quickly remove chips, keep the processing area clean, and avoid chip accumulation that affects the processing quality; the coolant directly enters the cutter body, effectively removing the heat generated during the cutting process, reducing the tool temperature, thereby reducing wear caused by overheating and increasing the service life of the tool; the good cooling effect can keep the tool and workpiece within the appropriate operating temperature range, ensuring the stability and accuracy of the processing process and reducing deformation caused by temperature changes; through continuous cooling and cleaning, the tool can maintain good performance during the processing process, extend its service life, reduce replacement frequency and production costs;

[0025] 3. Since the diamond grain size on the surface of the profiling tool is 0.005mm-0.006mm, when using this tool to process sapphire, the surface roughness and damage layer depth of the processed part are smaller, among which the roughness Sa does not exceed 50nm, Sz does not exceed 2000nm, and the damage layer depth does not exceed 0.005mm, and the performance of the sapphire product is more excellent.

[0026] In the description provided herein, numerous specific details are described. However, it is understood that embodiments of the present invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques are not shown in detail so as not to obscure the understanding of this description.

[0027] Similarly, it should be understood that in order to streamline the present disclosure and aid in understanding one or more of the various invention aspects, in the above description of exemplary embodiments of the present invention, various features of the present invention are sometimes grouped together into a single embodiment, figure, or description thereof. However, this disclosed method should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims below, invention aspects lie in less than all of the features of the individual embodiments disclosed above. Accordingly, the claims that follow the detailed description are hereby expressly incorporated into this detailed description, with each claim itself serving as a separate embodiment of the present invention.

[0028] Furthermore, those skilled in the art will appreciate that although some embodiments herein include certain features included in other embodiments but not other features, combinations of features from different embodiments are intended to be within the scope of the present invention and to form different embodiments. For example, in the claims below, any of the claimed embodiments may be used in any combination.

[0029] It should be noted that the above embodiments illustrate rather than limit the present invention, and that a person skilled in the art may devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference symbols placed between brackets should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The present invention may be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In a unit claim enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third etc. does not indicate any order. These words may be interpreted as names.

Claims

1. A tool for CNC polishing equipment, characterized in that: The invention comprises a tool bar (100), a profiling tool (200), an excretion hole (300) and a plurality of excretion grooves (400), wherein the profiling tool (200) is a cylinder with a concave side surface, the top surface (220) and the bottom surface (210) of the profiling tool (200) are circles with equal diameters, the side surface (230) of the profiling tool (200) is a concave curved surface, the bottom surface (210) of the profiling tool (200) is fixed to the end of the tool bar (100), and the profiling tool (200) is provided with a plurality of excretion grooves (400). The top surface (220) of the profiling tool (200) is provided with the drainage hole (300) toward the bottom surface (210), the diameter of the drainage hole (300) is smaller than the minimum diameter of the side surface (230), the side surface (230) of the profiling tool (200) is provided with the drainage groove (400) in the direction of the drainage hole (300), one end of the drainage groove (400) is located on the top surface (220) and the length of the drainage groove (400) is smaller than the height of the profiling tool (200).

2. The tool for CNC polishing equipment according to claim 1, characterized in that: The side surface (230) of the profiling tool (200) is covered with a resin layer containing diamond grains.

3. The tool for CNC polishing equipment according to claim 2, characterized in that: The particle size of the corundum is 0.005mm-0.006mm.

4. The tool for CNC polishing equipment according to claim 1, characterized in that: The cutter comprises four of the discharge slots (400).

5. A CNC polishing device, characterized in that: The invention comprises a tool for CNC polishing equipment according to any one of claims 1 to 4.

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