Forming cutter structure for machining multi-line equidistant end face ring groove

Abstract

The utility model relates to the technical field of cutter equipment, in particular to a forming cutter structure for machining multi-line equidistant end face ring grooves. The cutter comprises a cutter body and a plurality of sets of cutters evenly distributed on the end face of the cutter body, a tooth-shaped structure is arranged at the bottom of one cutter, the bottoms of the other cutters are of a plane-shaped structure, and the plane-shaped structure is lower than the tooth-shaped structure. The utility model has the beneficial effects that the technical scheme integrates the two functions of end face processing and tooth profile processing on one tool, so that the tool changing times and the clamping error are reduced, the tooth profile depth is effectively controlled, the processing efficiency is greatly improved, and the processing efficiency is greatly improved through one-time clamping and continuous processing. The problem of inaccurate positioning caused by multiple times of clamping and tool changing in a traditional method is solved, and the machining precision is remarkably improved.

Description

Technical Field

[0001] This utility model relates to the field of cutting tool equipment technology, and in particular to a cutting tool structure for machining multi-line equidistant end face annular grooves. Background Technology

[0002] The multi-line equidistant end face annular groove has a complex geometric profile, and the curvature, groove depth, and equidistant accuracy between the multiple lines of each annular groove are required to be extremely high.

[0003] The prior art, CN2024206857949, describes a tool for machining ring grooves. The prior art has the following problems during machining: the machining accuracy of the ring groove, such as inconsistent groove width and multi-line spacing error, etc., will also reduce the surface quality of the ring groove, resulting in problems such as surface roughness and ripples.

[0004] When machining multi-line equidistant end face annular grooves, the cutting thickness, cutting speed, and cutting direction constantly change with the tool's position within the groove, resulting in an unstable cutting force. This unstable cutting force induces tool vibration, affecting not only the surface quality and dimensional accuracy of the groove but also potentially damaging the tool. Especially during the moment the toothed block enters and exits the groove, the cutting force undergoes a sudden change, which can easily cause tool chipping or breakage. It also leaves vibration marks on the machined surface of the groove, severely impacting its appearance and performance.

[0005] Multi-line equidistant end face annular grooves require extremely high shape accuracy. However, during machining, they are affected by various factors such as tool wear, unstable cutting forces, and thermal deformation, making it very difficult to ensure that the machined annular groove shape completely matches the design requirements.

[0006] Therefore, it is necessary to design a tool structure for machining multi-line equidistant end face annular grooves to solve the above problems. Utility Model Content

[0007] The purpose of this invention is to provide a tool structure for machining multi-line equidistant end face annular grooves, so as to overcome the above-mentioned shortcomings of the existing technology.

[0008] To achieve the above objectives, the present invention adopts the following technical solution:

[0009] A tool structure for machining multi-line equidistant end face annular grooves includes a tool body and several sets of cutting blades evenly distributed on the end face of the tool body. One of the cutting blades has a tooth-shaped structure at its bottom, while the bottoms of the other cutting blades are all planar structures, and the height of the planar structure is lower than that of the tooth-shaped structure.

[0010] Preferably, the tooth shape structure is a tooth shape structure with equal spacing and equal size.

[0011] Preferably, the cutting tool is made of a hard alloy block.

[0012] Preferably, an inclined plane is provided on the side of the cutting tool, and the end of the inclined plane closer to the planar shape or the end closer to the tooth-shaped structure is the low point, and the end farther away from the planar shape or the tooth-shaped structure is the high point.

[0013] Preferably, a groove is left between the cutting blades.

[0014] The beneficial effects of this utility model are: This technical solution integrates the two functions of end face machining and tooth profile machining into one tool, which not only reduces the number of tool changes and clamping errors and effectively controls the tooth profile depth, but also greatly improves the machining efficiency. Through one clamping and continuous machining, it avoids the problem of inaccurate positioning caused by multiple clamping and tool changes in the traditional method, thus significantly improving the machining accuracy. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of a tool for forming multi-line equidistant end face annular grooves according to the present invention;

[0016] Figure 2 This is a schematic diagram of the machining structure of a tool for machining multi-line equidistant end face annular grooves according to the present invention;

[0017] Figure 3 This is a schematic diagram of the tooth shape structure of a tool for forming multi-line equidistant end face annular grooves according to the present invention;

[0018] Figure 4 This is a side view of a tool structure for machining multi-line equidistant end face annular grooves according to the present invention.

[0019] In the diagram: 1. Tool body; 2. Cutting tool; 21. Tooth shape structure; 22. Planar shape; 3. Groove; 4. Product. Detailed Implementation

[0020] Reference Figures 1 to 4 A tool structure for machining multi-line equidistant end face annular grooves includes a tool body 1 and a plurality of cutting tools 2 evenly distributed on the end face of the tool body.

[0021] The cutting tool is made of cemented carbide block, with a tooth-shaped structure 21 at the bottom of one of the cutting tools, while the bottoms of the other cutting tools are flat 22.

[0022] The height of planar shape 22 is lower than that of tooth-shaped structure 21;

[0023] The tooth shape structure 21 is a tooth structure with equal spacing and size. This ensures that the machined annular groove is equidistant. Traditional machining of multi-line equidistant end face annular grooves often involves multiple tools in steps. During tool switching and repositioning, it is extremely difficult to accurately control the depth of the annular groove. This new forming tool integrates roughing and finishing functions, requiring only one clamping to complete the annular groove machining. By setting the tooth shape structure 21 to be a tooth structure with equal spacing and size, errors caused by multiple clamping and positioning during step machining are avoided. The annular groove depth can be precisely controlled according to design requirements, significantly improving the consistency of annular groove depth in the same batch of products, meeting the production needs of high-precision parts in aerospace, precision machinery and other fields. At the same time, the single-edge tooth design can complete the forming of multi-line equidistant end face annular grooves in one machining, avoiding the accumulation of errors caused by multi-tool machining. The tool structure has been optimized to make the cutting force distribution more reasonable. During machining, it can effectively reduce the deformation of the workpiece and the tool, thereby ensuring the shape accuracy of the annular groove and making the dimensions such as the contour and groove width of the annular groove conform to the design standards. Meanwhile, the unique clamping and positioning design of the cutting tool ensures the positional accuracy of the multi-line equidistant end face annular groove when it is assembled with other components. Key indicators such as coaxiality and perpendicularity are more likely to meet design requirements, thus improving the assembly quality and operational stability of the entire mechanical system.

[0024] This invention utilizes a tooth-shaped structure 21 for roughing and finishing, enabling efficient material removal; and a planar shape 22 for finishing, ensuring the quality of the machined surface. This clearly defined structural design allows the tool to perform optimally at different machining stages, while also reducing the difficulty of tool manufacturing. Compared to the complex structure and manufacturing process of traditional tools, the tool structure of this invention is simpler, easier to manufacture and maintain, and reduces production costs and manufacturing cycle.

[0025] An inclined plane is also provided on the side of the cutting tool, with the end of the inclined plane closer to the planar shape 22 or the end closer to the tooth shape structure 21 being the low point, and the end farther away from the planar shape 22 or the tooth shape structure 21 being the high point. This inclined upward setting facilitates the flow of cutting chips, prevents the accumulation of cutting chips, and avoids affecting the cutting effect.

[0026] A groove 3 is left between the cutting blades. The groove is used to facilitate the flow of waste chips, providing space for the flow of the cut waste chips, enabling real-time chip removal, preventing blockage, and improving cutting efficiency.

[0027] The cutting tool itself provides structural stability and an interface for connection with the machine tool.

[0028] In this embodiment, four sets of cutting blades 2 are evenly distributed on the bottom of the tool body 1. One set of cutting blades 2 has a tooth-shaped structure 21, while the bottoms of the other three sets of cutting blades 2 are flat shapes 22, and the height of these three flat shapes 22 is lower than that of the tooth-shaped structure 21. The cutting blades 2 are made of cemented carbide blocks and are connected to the tool body using a high-strength welding method. This connection method ensures the firmness of the cemented carbide blocks on the tool body, preventing loosening or detachment even under large cutting forces, thus guaranteeing the stability and reliability of the tool during machining. Simultaneously, the welding process allows for precise control of the installation position and angle of the cemented carbide blocks to meet the accuracy requirements for machining the helical end face.

[0029] The processing steps in this implementation case:

[0030] Roughing Stage: When the tool begins machining the helical end face, the toothed carbide block first performs rough cutting. Due to its unique tooth design, it can quickly remove a large amount of material, laying the foundation for subsequent finishing. During this process, the toothed carbide block cuts along the helical trajectory, using its sharp teeth to remove excess material from the workpiece. Although the three planar carbide blocks are lower than the toothed blocks, they also participate in the cutting to a certain extent, playing a role in auxiliary support and preliminary surface smoothing, while also sharing some of the cutting force and reducing the burden on the toothed blocks.

[0031] Finishing Stage: As machining progresses and approaches the required machining accuracy and surface quality, finishing is primarily achieved using three planar carbide blocks. These blocks further refine and polish the surface after rough machining with the toothed blocks, resulting in a smoother and more even surface, thus ensuring the shape accuracy and surface quality of the helical end face. At this stage, the cutting tool, through precise motion control, performs slow and meticulous cutting along a pre-set helical trajectory. The three planar carbide blocks then perform minor surface finishing with relatively low cutting depths, ultimately achieving the designed dimensional accuracy and surface roughness, thereby completing the machining of the circular groove on the end face.

[0032] Compared with existing technologies, this invention significantly improves processing efficiency and reduces auxiliary time. Traditional multi-tool machining requires multiple clamping and tool changes, necessitating tool setting and machine parameter adjustments after each operation. This results in auxiliary time accounting for a large proportion of the overall machining cycle. This new forming tool, however, combines multiple functions, reducing the number of clamping and tool changes and significantly shortening auxiliary time. Operators can then dedicate more time to actual cutting, thereby increasing the number of parts processed per unit time and improving overall production efficiency.

[0033] The continuous machining advantage allows this tool to complete both roughing and finishing of multi-line equidistant end face annular grooves in a single setup. This avoids machining interruptions caused by tool changes in traditional machining, reducing machine tool idle time. The tool can perform continuous and stable cutting, improving cutting efficiency and significantly shortening the machining cycle of individual parts. For large-scale production, this continuous machining advantage can bring significant economic benefits and accelerate product delivery.

[0034] Tooling costs are effectively reduced, and manufacturing difficulty is lowered: Traditional multi-tool machining solutions require the separate design and manufacture of multiple tools, ensuring precise fit between them. This makes the tooling process complex and demands high-level manufacturing equipment and processes. This new type of forming tool integrates functions, simplifying the tool's structure and design. It reduces manufacturing steps and lessens reliance on the precision of manufacturing equipment and processes, significantly reducing the difficulty and cost of tool manufacturing. Companies can reduce tool procurement costs and R&D investment while maintaining tool quality.

[0035] Extended service life: Although the toothed blocks of the cutting tool wear relatively quickly during machining, the rational structural design allows the three planar blocks to distribute some of the cutting force. This design results in more uniform overall tool wear, avoiding excessive localized wear. This extends the tool's service life and reduces the frequency of tool replacement. It not only lowers tool procurement costs but also reduces downtime and management costs associated with tool replacement, improving production continuity and stability.

[0036] Meanwhile, by precisely controlling machining accuracy and maintaining a stable machining process, multi-line equidistant end-face annular grooves produced in the same batch maintain a high degree of consistency in dimensional accuracy, shape accuracy, and surface quality. This improves the overall stability and reliability of product quality, reducing defect rates and after-sales maintenance costs caused by product quality fluctuations. Enterprises can compete in the market with higher-quality products, enhancing their market competitiveness and customer satisfaction.

[0037] The advantages of this utility model are that this technical solution integrates the two functions of end face machining and tooth profile machining into one tool, which not only reduces the number of tool changes and clamping errors and effectively controls the tooth profile depth, but also greatly improves the machining efficiency. Through one clamping and continuous machining, it avoids the positioning inaccuracy problem caused by multiple clamping and tool changes in traditional methods, thus significantly improving the machining accuracy.

[0038] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A tool structure for machining multi-line equidistant end face annular grooves, comprising a tool body and a plurality of cutting blades uniformly distributed on the end face of the tool body, characterized in that: One of the cutting tools has a tooth-shaped structure at its bottom, while the bottoms of the other cutting tools have a flat shape, and the height of the flat shape is lower than that of the tooth-shaped structure.

2. The tool structure for machining multi-line equidistant end face annular grooves according to claim 1, characterized in that: The tooth-shaped structure is a tooth-shaped structure with equal spacing and equal size.

3. The tool structure for machining multi-line equidistant end face annular grooves according to claim 1, characterized in that: The cutting tool is made of a hard alloy block.

4. The tool structure for machining multi-line equidistant end face annular grooves according to claim 1, characterized in that: An inclined plane is also provided on the side of the cutting tool, and the end of the inclined plane closer to the planar shape or the end closer to the tooth-shaped structure is the low point, and the end farther away from the planar shape or the tooth-shaped structure is the high point.

5. The tool structure for machining multi-line equidistant end face annular grooves according to claim 1, characterized in that: A groove is left between the cutting tools.

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