Four-blade pagoda alloy drill

Abstract

A four-blade pagoda alloy drill comprises an alloy tool apron and a U-shaped groove rod, the bottom of the alloy tool apron is fixedly connected with the top of the U-shaped groove rod, the outer wall of the alloy tool apron is connected with a blade structure, the blade structure comprises first side blades and side cutting edges, the inner sides of the two first side blades are fixedly connected with the front side and the rear side of the alloy tool apron respectively, and the inner sides of the two side blades are fixedly connected with the rear side of the alloy tool apron respectively. The second side edge on the outer wall of the alloy tool apron is a 90-degree side edge, cutting is conducted in the direction perpendicular to the axis of the drill bit, main radial cutting force is provided, the flatness and perpendicularity of the hole wall are ensured, in the initial stage of drilling, the drill bit is helped to be rapidly centered, the machining precision is improved, and the main cutting edge at the top of the second side edge bears the main cutting task. Materials are directly cut off in the drilling process, the 90-degree angle design enables cutting force to be concentrated, a workpiece can be conveniently and rapidly cut in, drilling efficiency and machining quality are improved, an original tool bit structure is changed, axial force, tangential force and radial force are effectively dispersed, tool abrasion is reduced, and tool durability is improved.

Description

A four-bladed pagoda alloy drill Technical Field

[0001] This utility model relates to a four-bladed pagoda alloy drill, and more particularly to a four-bladed pagoda alloy drill. Background Technology

[0002] In building installation, interior decoration, and stone processing, drilling into hard materials such as ceramic tiles and marble is a frequent operation. As the precision requirements for decoration increase, traditional drilling methods have revealed significant shortcomings. The high hardness and brittleness of these materials make them prone to chipping and cracking during drilling, leading to waste and rework. The varying thicknesses and surface characteristics of different materials further increase the difficulty of positioning, making it difficult for general-purpose tools to balance efficiency and quality. The industry urgently needs more adaptable drilling technologies that can reduce damage, quickly remove chips, and adapt to various materials, thereby improving work efficiency and finished product yield. In the drilling of hard and brittle materials such as stone and ceramic tiles, existing alloy drill bits generally use a single straight cutting edge or a simple cross-shaped cutting edge structure, which is difficult to simultaneously meet the requirements of… To meet the demands for efficient cutting and precise chip control, there are currently no pagoda-shaped alloy drill bits on the market specifically designed for the processing characteristics of stone and ceramic tiles. These materials have high hardness and low flexural strength, making conventional drill bits prone to chipping and cracking. While the pagoda-shaped layered cutting structure can effectively disperse stress and reduce impact through step-by-step progressive hole enlargement, its unique multi-stage cutting edge shape and its compatibility with hard and brittle materials remain a technological gap. Due to unreasonable cutting edge design, cutting forces are concentrated on a local cutting edge, causing rapid wear of that part of the cutting edge. Furthermore, the lack of optimized design for cutting force components makes it impossible to effectively disperse axial, tangential, and radial forces, exacerbating tool wear and reducing tool durability. Summary of the Invention

[0003] This invention aims to solve the problems existing in the prior art by providing a four-bladed pagoda alloy drill that effectively disperses axial force, tangential force and radial force, reduces tool wear and improves tool durability.

[0004] The technical solution adopted by this utility model to solve its technical problem is as follows: This four-bladed pagoda alloy drill includes an alloy tool holder and a U-shaped groove rod. The bottom of the alloy tool holder is fixedly connected to the top of the U-shaped groove rod. The outer wall of the alloy tool holder is connected to a cutting edge structure. The cutting edge structure includes a first side blade and a side cutting edge. The inner sides of the two first side blades are fixedly connected to the front and rear sides of the alloy tool holder, respectively. The top of the first side blade is fixedly connected to the bottom of the side cutting edge. The top of the side cutting edge is fixedly connected to a main cutting edge, and the bottom of the main cutting edge is fixedly connected to a second side blade.

[0005] To further improve the design, the inner sides of the two second side blades are fixedly connected to the left and right sides of the alloy tool holder, respectively.

[0006] To further improve the design, a main rod is fixedly connected to the bottom of the U-shaped groove rod.

[0007] To further improve the design, a hexagonal rod is fixedly connected to the bottom of the main rod.

[0008] To further improve the design, a grooved rod is fixedly connected to the bottom of the hexagonal rod.

[0009] To further improve the design, a hexagonal handle is fixedly connected to the bottom of the grooved rod.

[0010] The beneficial effects of this utility model are as follows: In this utility model, the first side edge in the cutting edge structure is a 40° side edge, participating in cutting at a 40° inclination angle, generating a lateral force component. This assists in chip removal while reducing cutting resistance. During stepped cutting, it works in conjunction with other cutting edges to gradually enlarge the hole diameter and improve drilling efficiency. The side edge at the top of the first side edge cooperates with the 40° side edge to form a specific cutting trajectory during cutting, dispersing cutting force, reducing tool wear, and simultaneously helping to control the chip shape and discharge direction, making the drilling process smoother. The outer wall of the alloy tool holder... The second side edge is a 90° side edge, cutting perpendicular to the drill bit axis, providing the main radial cutting force, ensuring the flatness and perpendicularity of the hole wall, and helping the drill bit to quickly center at the beginning of drilling, improving machining accuracy. The main cutting edge at the top of the second side edge undertakes the main cutting task, directly removing material during drilling. The 90° angle design concentrates the cutting force, facilitating rapid entry into the workpiece, improving drilling efficiency and machining quality, changing the original tool head structure, effectively dispersing axial force, tangential force and radial force, reducing tool wear, and improving tool durability. Attached Figure Description

[0011] Figure 1 is a schematic diagram of the structure of this utility model;

[0012] Figure 2 is a schematic diagram of the connection relationship between the alloy cutting head, the first side cutting edge and the second side cutting edge in Figure 1;

[0013] Figure 3 is a schematic diagram of the connection structure of the hexagonal rod, the slotted rod and the hexagonal handle in Figure 1;

[0014] Figure 4 is a schematic diagram of the bottom structure of the hexagonal handle in Figure 1.

[0015] Explanation of reference numerals in the attached drawings: 1. Alloy blade holder; 2. Blade structure; 201. First side blade; 202. Side cutting edge; 203. Second side blade; 204. Main cutting edge; 3. U-shaped groove rod; 4. Main rod; 5. Hexagonal rod; 6. Groove rod; 7. Hexagonal shank. Detailed Implementation

[0016] The present invention will be further described below with reference to the accompanying drawings:

[0017] Referring to Figures 1-4: In this embodiment, a four-bladed pagoda alloy drill includes an alloy tool holder 1 and a U-shaped groove rod 3. The bottom of the alloy tool holder 1 is fixedly connected to the top of the U-shaped groove rod 3. The outer wall of the alloy tool holder 1 is connected to a cutting edge structure 2. The cutting edge structure 2 includes a first side blade 201 and a side cutting edge 202. The inner sides of the two first side blades 201 are fixedly connected to the front and rear sides of the alloy tool holder 1, respectively. The top of the first side blade 201 is fixedly connected to the bottom of the side cutting edge 202. A main cutting edge 204 is fixedly connected to the top of the side cutting edge 202. The main cutting edge 204 undertakes the main cutting task. A second side blade 203 is fixedly connected to the bottom of the main cutting edge 204. The alloy tool holder 1 and the cutting edge structure 2 are both made of cemented carbide.

[0018] The first side cutting edge 201 in the cutting edge structure 2 is a 40° side cutting edge, participating in cutting at a 40° inclination angle, generating a lateral force component, assisting in chip removal while reducing cutting resistance. During stepped cutting, it works in conjunction with other cutting edges to gradually enlarge the hole diameter and improve drilling efficiency. The side cutting edge 202 at the top of the first side cutting edge 201 cooperates with the 40° side cutting edge to form a specific cutting trajectory during cutting, dispersing cutting force, reducing tool wear, and helping to control the chip shape and discharge direction, making the drilling process smoother. The second side cutting edge 203 on the outer wall of the alloy tool holder 1... The 90° side cutting edge cuts perpendicular to the drill bit axis, providing the main radial cutting force to ensure the flatness and perpendicularity of the hole wall. In the initial stage of drilling, it helps the drill bit to quickly center and improves machining accuracy. The main cutting edge 204 at the top of the second side cutting edge 203 undertakes the main cutting task, directly removing material during drilling. The 90° angle design concentrates the cutting force, facilitating rapid entry into the workpiece, improving drilling efficiency and machining quality. It changes the original tool head structure, effectively dispersing axial, tangential, and radial forces, reducing tool wear, and improving tool durability.

[0019] The inner sides of the two second side cutting edges 203 are fixedly connected to the left and right sides of the alloy tool holder 1, respectively. The bottom of the U-shaped groove rod 3 is fixedly connected to the main rod 4. The U-shaped groove rod 3 is mainly used to discharge the waste chips from the drilling. The bottom of the main rod 4 is fixedly connected to the hexagonal rod 5. The bottom of the hexagonal rod 5 is fixedly connected to the groove rod 6. The bottom of the groove rod 6 is fixedly connected to the hexagonal shank 7. The hexagonal shank 7 is convenient for installation with the machine tool chuck.

[0020] Working principle:

[0021] Four-bladed pagoda alloy drill usage:

[0022] The outer wall of the hexagonal shank 7 is a standard hexagonal structure, which can fit tightly with the drill chuck to provide reliable clamping force and ensure that the drill bit is stable and does not slip during drilling. The groove 6 at the top of the hexagonal shank 7 is a double R groove with an arc design to enhance the aesthetics of the outer tube, strengthen the structure, reduce vibration during drilling, and make the drill bit more stable. The hexagonal rod 5 at the top of the groove 6 enhances the overall rigidity of the drill bit and resists deformation caused by cutting forces during drilling. The hexagonal contour also facilitates manual installation and disassembly, improving operational convenience. The main rod 4 at the top of the hexagonal rod is the main force-bearing structure of the drill bit, responsible for transmitting rotational power and axial pressure. The U-shaped groove 3 at the top of the main rod 4 increases the chip removal space, optimizes the chip removal path, and allows the chips to be quickly and smoothly discharged from the drill hole. At the same time, it reduces the weight of the drill bit, reduces rotational inertia, and improves the response speed and processing efficiency of the drill bit.

[0023] The first side cutting edge 201 on the outer wall of the alloy tool holder 1 is a 40° side cutting edge, participating in cutting at a 40° inclination angle, generating a lateral component force, assisting in chip removal while reducing cutting resistance. During stepped cutting, it works in conjunction with other cutting edges to gradually enlarge the hole diameter and improve drilling efficiency. The side cutting edge 202 at the top of the first side cutting edge 201 cooperates with the 40° side cutting edge to form a specific cutting trajectory during cutting, dispersing cutting force, reducing tool wear, and helping to control the shape and direction of chip removal, making the drilling process smoother. The second side cutting edge 203 on the outer wall of the alloy tool holder 1 is a 90° side cutting edge, cutting perpendicular to the drill axis, providing the main radial cutting force, ensuring the flatness and perpendicularity of the hole wall, and helping the drill to quickly center at the beginning of drilling, improving machining accuracy. The main cutting edge 204 at the top of the second side cutting edge 203 undertakes the main cutting task, directly removing material during drilling. The 90° angle design concentrates the cutting force, facilitating rapid entry into the workpiece, improving drilling efficiency and machining quality.

[0024] Although the present invention has been illustrated and described with reference to preferred embodiments, those skilled in the art should understand that various changes in form and detail are possible within the scope of the claims.

Claims

1. A four-bladed pagoda alloy drill, comprising an alloy tool holder (1) and a U-shaped grooved rod (3), characterized in that: The bottom of the alloy knife holder (1) is fixedly connected to the top of the U-shaped groove rod (3), and the outer wall of the alloy knife holder (1) is connected to a blade structure (2); the blade structure (2) includes a first side blade (201) and a side cutting edge (202), the inner sides of the two first side blades (201) are fixedly connected to the front and rear sides of the alloy knife holder (1) respectively, the top of the first side blade (201) is fixedly connected to the bottom of the side cutting edge (202), the top of the side cutting edge (202) is fixedly connected to a main cutting edge (204), and the bottom of the main cutting edge (204) is fixedly connected to a second side blade (203); the first side blade (201) is a 40° side blade, and the second side blade (203) on the outer wall of the alloy knife holder (1) is a 90° side blade.

2. The four-bladed pagoda alloy drill according to claim 1, characterized in that: The inner sides of the two second side blades (203) are fixedly connected to the left and right sides of the alloy blade holder (1), respectively.

3. The four-bladed pagoda alloy drill according to claim 1, characterized in that: The bottom of the U-shaped groove rod (3) is fixedly connected to the main rod (4).

4. The four-bladed pagoda alloy drill according to claim 3, characterized in that: The bottom of the main rod (4) is fixed with a hexagonal rod (5).

5. The four-bladed pagoda alloy drill according to claim 4, characterized in that: The bottom of the hexagonal rod (5) is fixed with a grooved rod (6).

6. The four-bladed pagoda alloy drill according to claim 5, characterized in that: The bottom of the grooved rod (6) is fixed with a hexagonal handle (7).

Images