CNC cutter

Abstract

The utility model provides a CNC cutter, and relates to the technical field of cutters, the CNC cutter comprises a cutter main body, the cutter main body is provided with a cutter handle end and a cutting end, the cutting end is provided with a plurality of steps along the axial direction of the cutter main body, the sizes of the steps are gradually reduced step by step, and the cutting end of the cutter main body is provided with a plurality of groups of cutting blades. And the positions of the plurality of groups of cutting blades correspond to the positions of the plurality of steps respectively. According to the cutting device, the multiple sets of cutting blades are arranged, the positions of the multiple sets of cutting blades correspond to the positions of the multiple steps correspondingly, so that the multiple sets of cutting blades are arranged in a step shape, and due to the step-shaped design, the cutting blades can conduct cutting in a segmented mode in the cutting process; according to the segmented cutting mode, each set of cutting blades can undertake a certain cutting task so as to synchronously machine a plurality of hole sites with different diameters, and therefore the machining efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool technology, and more specifically, to a CNC cutting tool. Background Technology

[0002] CNC is an abbreviation for Computerized Numerical Control. It is a technology that uses computer programs to control machine tools for machining. CNC technology combines computer technology, automation technology and traditional manufacturing technology, making the machining process more precise, efficient and flexible.

[0003] In the field of machining, especially in the roughing of steel ring holes, the performance and efficiency of cutting tools are crucial. Traditional carbide end mills have significant shortcomings in this machining process. Specifically, since most traditional carbide end mills only have a single layer of inserts, this design limits their machining efficiency. In practical applications, roughing steel ring holes requires machining multiple holes of different diameters. However, when using carbide end mills with single-layer inserts for roughing steel ring holes, it is usually necessary to perform step-by-step machining of multiple holes of different diameters, which is time-consuming and inefficient, failing to meet the demands of modern high-efficiency production. Therefore, we have made improvements and proposed a CNC cutting tool. Summary of the Invention

[0004] The purpose of this invention is to address the problem that the current single-layer insert alloy end mills typically require a long time and are inefficient when roughing steel ring holes.

[0005] To achieve the above-mentioned objectives, this invention provides a CNC cutting tool to improve the aforementioned problems.

[0006] The application is as follows:

[0007] The tool body includes a tool holder at one end for connection to a machine tool and a cutting end at the other end for performing cutting operations. The cutting end has several steps arranged sequentially along the axial direction of the tool body, and the size of each step decreases progressively away from the tool holder end. Several sets of cutting inserts are also provided on the cutting end of the tool body, and the installation position of each set of cutting inserts corresponds to the position of the corresponding step.

[0008] As a preferred technical solution of this application, a set of cutting blades near the end of the tool holder is inclined.

[0009] As a preferred technical solution of this application, the inclination angle of the cutting insert near the end of the tool holder is thirty degrees.

[0010] As a preferred technical solution of this application, a mounting component is provided between the cutting insert and the tool body, and the mounting component is used for mounting the cutting insert.

[0011] As a preferred technical solution of this application, the mounting component includes a mounting groove formed on the tool body, and the cutting blade is mounted in the mounting groove.

[0012] As a preferred technical solution of this application, a groove is provided at the corner of the inner wall of the mounting groove, and the groove is an arc-shaped groove. The arc-shaped groove can reduce the contact stress concentration between the cutting blade and the corner of the inner wall of the mounting groove during installation and use, reduce the cutting blade breakage or damage to the mounting groove caused by stress concentration, thereby improving the overall reliability and service life of the tool.

[0013] As a preferred technical solution of this application, a threaded groove is provided on the inner wall of the mounting groove, and a fastening bolt is connected between the threaded groove and the cutting blade.

[0014] As a preferred technical solution of this application, a plurality of chip removal grooves are provided on the outer peripheral side of the cutting end of the tool body.

[0015] As a preferred technical solution of this application, the chip removal groove is arc-shaped, and the depth of the chip removal groove gradually becomes shallower from near the cutting end to near the tail end of the tool holder.

[0016] As a preferred technical solution of this application, the shank end of the tool body adopts a conical shank structure, and the taper of the conical shank structure is 7:24.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] In the scheme of this application:

[0019] To address the problem of low efficiency and time-consuming operation when using single-layer insert carbide end mills for roughing steel ring holes in existing technologies, this application proposes a stepped arrangement of several sets of cutting inserts, with each set corresponding to a set of steps. This stepped design allows the cutting inserts to perform segmented cutting during the cutting process. This segmented cutting method ensures that each set of cutting inserts undertakes a specific cutting task, enabling simultaneous machining of multiple holes with different diameters, thereby improving machining efficiency. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of the CNC cutting tool provided in this application;

[0021] Figure 2 A structural schematic diagram of the CNC cutting tool provided in this application from another perspective;

[0022] Figure 3 A schematic diagram of the mounting slot for the CNC tool provided in this application;

[0023] Figure 4 A schematic diagram of the angle of the inclined cutting insert of the CNC tool provided in this application;

[0024] Figure 5 This is a schematic diagram illustrating the machining process of tilting the CNC tool provided in this application.

[0025] The image indicates:

[0026] 1. Tool body; 2. Chip removal groove; 4. Step; 5. Cutting insert; 6. Mounting groove; 601. Threaded groove; 7. Fastening bolt. Detailed Implementation

[0027] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0028] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0029] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0030] Example 1, please refer to Figures 1-3The tool body 1 includes a tool holder at one end for connection to a machine tool and a cutting end at the other end for performing cutting operations. Several steps 4 are sequentially arranged along the axial direction of the tool body 1, with the size of each step 4 decreasing progressively away from the tool holder end. Several sets of cutting inserts 5 are also provided on the cutting end of the tool body 1, with each set of inserts 5 corresponding to the position of a corresponding step 4. The tool body 1 is made of tool steel, a material with excellent strength, toughness, and wear resistance, providing reliable structural support for the tool and ensuring that it will not easily deform or break under complex and varied machining conditions. This ensures the continuity and stability of machining, reduces the risk of production interruption due to tool damage, and improves production efficiency. Efficiency; The cutting insert 5 is made of cemented carbide, which has extremely high hardness and excellent wear resistance. It can maintain a sharp cutting edge for a long time during the cutting process, significantly reducing the wear rate of the cutting insert 5. This not only extends the tool's service life and reduces the tool replacement frequency and cost, but also, due to its stable cutting performance, makes the surface quality of the machined workpiece more uniform and smooth, with higher dimensional accuracy, effectively improving product quality and machining accuracy; The corresponding setting of the step 4 and the cutting insert 5 allows the cutting force to be evenly distributed along the tool's axis to each cutting insert 5, reducing tool runout caused by excessive local force, thereby greatly improving machining accuracy, reducing machining errors caused by tool runout, and ensuring that the machined workpiece meets high-precision production requirements.

[0031] Example 2 further optimizes the CNC tool provided in Example 1, specifically, as follows: Figure 3 and Figure 4 As shown, the set of cutting inserts 5 near the tool holder end is inclined, allowing the chamfering of the hole opening to be completed simultaneously during the hole-making process, eliminating the need for a separate chamfering process in the later stages. This not only saves processing time and improves production efficiency but also reduces the number of times the workpiece is transferred and clamped between different processes, lowering the risk of positioning errors caused by multiple clampings. This ensures the relative positional accuracy of the hole opening and improves the overall quality and processing accuracy of the product. Completing chamfering and hole opening in one step makes the processing process more continuous and efficient, avoiding processing errors that may occur due to process transitions, and improving production efficiency and product quality stability. For large-scale production, this can significantly reduce production costs and improve the economic benefits of enterprises.

[0032] Furthermore, such as Figure 4 As shown, the cutting insert 5 near the end of the tool holder has a tilt angle of 30 degrees, which can meet the requirements of most industrial products for chamfer size and surface quality.

[0033] Furthermore, a mounting component is provided between the cutting insert 5 and the tool body 1. The mounting component is used to install the cutting insert 5. The mounting component can accurately position the cutting insert 5 on the tool body 1, ensuring the installation accuracy of the cutting insert 5. This ensures the stability of the cutting performance and machining accuracy of the tool during the cutting process, reduces machining errors and quality problems caused by inaccurate installation of the cutting insert 5, improves the product qualification rate, and reduces scrap loss costs.

[0034] Furthermore, such as Figures 1-3 As shown, the mounting component includes a mounting groove 6 formed on the tool body 1. The cutting insert 5 is installed in the mounting groove 6. The mounting groove 6 provides a stable mounting position for the cutting insert 5, which can effectively position and fix the cutting insert 5, reduce the displacement, loosening or falling off of the cutting insert 5 during high-speed rotation and cutting, thereby ensuring the stability of machining accuracy and cutting performance of the tool.

[0035] Furthermore, such as Figure 3 As shown, the inner wall of the mounting groove 6 has a groove at its corner, and the groove is an arc-shaped groove. Through its ingenious structural design, the arc-shaped groove effectively disperses the contact stress between the cutting blade 5 and the inner wall of the mounting groove 6, avoids the generation of stress concentration points, and reduces the probability of the cutting blade 5 breaking due to stress concentration. At the same time, it also reduces the risk of the mounting groove 6 being damaged by excessive stress during long-term use. This makes the tool more stable and reliable during long-term, high-intensity use, greatly reduces downtime and maintenance costs caused by tool failure, improves the utilization rate and production efficiency of production equipment, and ensures the continuity and stability of production.

[0036] Furthermore, such as Figure 1 As shown, a threaded groove 601 is provided on the inner wall of the mounting groove 6. A fastening bolt 7 is connected between the threaded groove 601 and the cutting blade 5. The cooperation between the fastening bolt 7 and the threaded groove 601 can enhance the fixing effect of the cutting blade 5 in the mounting groove 6. Under the condition of high-speed rotation of the tool and bearing large cutting force, it is ensured that the cutting blade 5 is not easy to loosen, thus ensuring the safety and stability of the machining.

[0037] Example 3 further optimizes the CNC cutting tools provided in Example 1 or 2, specifically, as follows: Figure 1As shown, the outer periphery of the cutting end of the tool body 1 is provided with several chip removal grooves 2. The chip removal grooves 2 can remove the chips generated during the cutting process in a timely and effective manner, avoid the accumulation of chips around the tool, reduce the secondary wear of the tool by the chips, extend the tool's durability, and reduce the tool replacement frequency and cost. At the same time, smooth chip removal also helps to improve the surface quality of the machined surface, because the timely removal of chips can reduce the scratching of the machined surface, ensure machining accuracy and surface roughness, and improve the appearance quality and performance of the product.

[0038] Furthermore, such as Figure 1 As shown, the chip removal groove 2 is arc-shaped, and the depth of the chip removal groove 2 gradually decreases from near the cutting end to near the tail end of the tool holder. The arc-shaped chip removal groove 2 design conforms to the natural flow characteristics of chips under centrifugal force, which can guide the chips to be smoothly discharged along the chip removal groove 2, improve chip removal efficiency, and reduce the residence time and accumulation of chips on the tool.

[0039] Furthermore, the tool holder of the tool body 1 adopts a conical shank structure with a taper of 7:24. This 7:24 conical shank structure fully complies with the general standards of the machine tool industry, providing excellent versatility and interchangeability. This allows the tool to be quickly and accurately installed and replaced on CNC machine tools of different models and manufacturers, greatly improving production flexibility and efficiency, and reducing production delays and cost increases caused by tool incompatibility with machine tools. At the same time, the standard conical shank structure ensures a high-precision fit between the tool and the machine tool spindle when connected to the machine tool, ensuring the stability and concentricity of the tool during rotation, which is beneficial for improving machining accuracy and reducing machining errors.

[0040] The CNC cutting tool provided by this utility model is used as follows:

[0041] The tool body 1 is mounted on a CNC machine tool to drive its rotation. During this rotation, the tool body 1 performs machining through the cutting insert 5. Figure 5 The roughing of the steel ring hole is shown. Figure 5 The marking at point A is the steel ring. During the machining process, because several sets of cutting blades 5 are arranged in a stepped manner, the stepped design allows the cutting blades 5 to cut in segments during the cutting process. This segmented cutting method allows each set of cutting blades 5 to undertake a certain cutting task, thereby improving machining efficiency.

[0042] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," 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, an electrical connection, or a connection that allows communication between them; 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 utility model according to the specific circumstances.

[0043] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A CNC cutting tool, characterized in that, The tool body (1) includes a tool holder end for connecting to a machine tool at one end and a cutting end for performing cutting operations at the other end. Several steps (4) are arranged sequentially along the axial direction of the tool body (1), and the size of each step (4) decreases gradually in the direction away from the tool holder end. Several sets of cutting blades (5) are also provided on the cutting end of the tool body (1), and the installation position of each set of cutting blades (5) corresponds to the position of the corresponding step (4). A set of cutting inserts (5) near the end of the tool holder is inclined; several chip removal grooves (2) are provided on the outer periphery of the cutting end of the tool body (1); the chip removal grooves (2) are arc-shaped, and the depth of the chip removal grooves (2) gradually decreases from near the cutting end to near the tail end of the tool holder.

2. The CNC cutting tool according to claim 1, characterized in that, The cutting insert (5) near the end of the tool holder has a tilt angle of thirty degrees.

3. The CNC cutting tool according to any one of claims 1-2, characterized in that, A mounting component is provided between the cutting blade (5) and the tool body (1), and the mounting component is used to install the cutting blade (5).

4. The CNC cutting tool according to claim 3, characterized in that, The mounting component includes a mounting groove (6) formed on the tool body (1), and the cutting blade (5) is mounted in the mounting groove (6).

5. The CNC cutting tool according to claim 4, characterized in that, The inner wall of the mounting groove (6) is provided with a groove at the corner, and the groove is an arc-shaped groove.

6. The CNC cutting tool according to claim 4 or 5, characterized in that, A threaded groove (601) is provided on the inner wall of the mounting groove (6), and a fastening bolt (7) is connected between the threaded groove (601) and the cutting blade (5).

7. The CNC cutting tool according to claim 1, characterized in that, The tool body (1) adopts a conical shank structure at the shank end, and the taper of the conical shank structure is 7:24.

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