Angled multi-cutting-edge stone carving knife

Abstract

The utility model discloses an angle multi-cutting edge stone carving knife, which comprises a knife bar and a knife head, the knife head is arranged at the end part of the knife bar, the knife head is provided with a conical base part, a plurality of cutting edge parts are arranged on the upper surface of the conical base part, the cutting edge parts are in a triangular prism shape and are arranged on the upper surface of the conical base part in a convex manner, and the knife head is provided with a plurality of cutting edge parts. And the plurality of blade parts are arranged along the radial direction of the conical base part. According to the multi-cutting-edge stone carving knife with the angle, the six distributed cutting edge parts can achieve segmented cutting, the covering area of single-time feeding is increased by more than three times, and the carving speed is increased by 50%-80%; the gradient widened blade part is designed to disperse stress, so that single-point excessive wear is avoided; the 75-degree taper angle is optimized to adapt to high-hardness stones (such as granite), and the risk of cracking of the cutting edge is reduced.

Description

Technical Field

[0001] This utility model relates to the field of carving knife technology, specifically to a stone carving knife with angled multi-edged blades. Background Technology

[0002] Stone carving knives are the core tools for stone processing (such as marble, granite, and artificial stone). Existing stone carving knives, such as CN210148446U and CN205989605U, all have a symmetrical double-edged structure at the blade head.

[0003] Traditional cutting tools are mostly single-edged or double-edged, relying on diamond particles rotating at high speeds for grinding. However, as stone processing develops towards higher precision and efficiency, the limitations of traditional cutting tools are becoming increasingly apparent.

[0004] Existing stone carving tools have few cutting edges, resulting in slow carving speeds. Some tools also suffer from excessively thick diamond edges, leading to inefficient grinding wheel sharpening and low processing efficiency. Therefore, it is necessary to propose a multi-edged, angled stone carving tool to address these issues. Utility Model Content

[0005] The purpose of this utility model is to solve the above-mentioned technical problems by providing a stone carving knife with angled multi-edged blades.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a multi-edged stone carving knife with angles, comprising a shank and a blade head, wherein the blade head is provided at the end of the shank, and the blade head has a conical base, wherein a plurality of blade portions are provided on the upper surface of the conical base, the blade portions being triangular prism-shaped and protruding on the upper surface of the conical base, and the plurality of blade portions being arranged radially along the conical base.

[0007] Furthermore, several cutting edges converge at the tip of the cone base and intersect at a single point. The intersection of the several cutting edges forms the tip, and a tip platform is formed at the tip, which is parallel to the bottom surface of the cone base.

[0008] Furthermore, the outer diameter of the blade tip platform is controlled at 0.4±0.05MM.

[0009] Furthermore, the blade portion has six blades, which are distributed in a regular hexagonal pyramid shape.

[0010] Furthermore, the cone angle formed by the tip of the cutter head is 60-90°.

[0011] Furthermore, the cone angle formed by the tip of the cutter head is 75°.

[0012] Furthermore, the end of the blade portion away from the tip portion is provided with a tapered tail end, and the position of the ridge line of the tapered tail end does not exceed the circumferential surface of the blade shank portion.

[0013] Furthermore, the cutting edge of the blade gradually widens from top to bottom.

[0014] Compared with the prior art, the beneficial effects of this utility model are: the six blades of the multi-edged stone carving knife with angles can achieve segmented cutting, increasing the coverage area of ​​a single pass by more than 3 times and the carving speed by 50% to 80%; the gradient widened blade design disperses stress and avoids excessive wear at a single point; the 75° cone angle is optimized for high-hardness stone (such as granite) and reduces the risk of blade chipping. Attached Figure Description

[0015] Figure 1 This is one of the isometric views of a multi-edged stone carving knife with angles according to this utility model;

[0016] Figure 2 This is a front view of a multi-edged stone carving knife with angles according to the present invention;

[0017] Figure 3 This is a top view of the blade head of a multi-edged stone carving knife with angles according to this utility model;

[0018] In the diagram: 1. Tool holder; 2. Tool head; 3. Conical base; 4. Cutting edge; 5. Tool tip platform; 6. Retractable tail end. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0020] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. Identical components are indicated by the same reference numerals.

[0021] In the description of this utility model, it should be understood that the terms "center," "lateral," "upper," "lower," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. 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 indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more. Additionally, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusion.

[0022] A type of angled, multi-edged stone carving knife, such as Figure 1-3 As shown, the tool includes a tool holder and a cutter head. The tool holder has a cutter head at its end, and the cutter head has a conical base. Several cutting edges are provided on the upper surface of the conical base. These cutting edges are triangular prisms protruding from the upper surface of the conical base, and are arranged radially along the conical base. In actual manufacturing, the tool holder and cutter head are fabricated separately. The cutter head is then welded to the tool holder to form an engraving tool. The bottom of the tool holder base is ground smooth to ensure welding strength. A polycrystalline silicon (PCD) laser-cutting cutter head is used, and its bottom surface is then ground smooth. The PCD cutter head and tool holder are then vacuum-welded using specialized tooling to ensure concentricity and consistent outer diameter. After welding, the runout is checked using a dial indicator and controlled within 0.05 mm. Any deviations are ground to the required level using an external cylindrical grinder.

[0023] Furthermore, in this embodiment, several cutting edges converge at the tip of the conical base and intersect at a single point. The intersection of these cutting edges forms the blade tip, where a blade tip platform is formed. This blade tip platform is parallel to the bottom surface of the conical base. Moreover, the outer diameter of the blade tip platform is controlled within 0.4 ± 0.05 mm, ensuring concentrated cutting force and controllable engraving precision.

[0024] The cutting edge has six blades, which are distributed in a regular hexagonal pyramid shape. The cutting head is designed with a conical base, and its upper surface has six triangular prism-shaped cutting edges, which are evenly distributed in a regular hexagonal pyramid shape. Each cutting edge extends radially along the base of the cone, forming multiple cutting edges working together.

[0025] Furthermore, the cone angle formed by the tip of the cutting head is 60–90°. Preferably, the cone angle formed by the tip of the cutting head is 75°. In actual use, the appropriate angle can be selected as needed to adapt to different stone hardnesses. For example, 75° is used when processing granite, and 60° is used when processing marble. The opening angle can balance cutting resistance. The 75° cone angle is optimized for high-hardness stones (such as granite), and the gradient widened cutting edge design disperses stress, avoiding excessive wear at a single point and reducing the risk of edge chipping.

[0026] Furthermore, the end of the cutting edge furthest from the tip is provided with a tapering tail end, the ridge of which does not extend beyond the circumferential surface of the tool shank. This ensures aerodynamic stability during tool rotation and reduces the risk of vibration.

[0027] Furthermore, the cutting edge gradually widens from top to bottom. The cutting edge gradually widens from the tip to the tail, forming a gradient structure that is narrow at the front and wide at the back. This reduces cutting resistance at the front end and enhances chip removal stability at the rear end, preventing chip accumulation.

[0028] After the cutter head is welded to the tool holder, the runout is checked using a dial indicator. The runout is controlled within 0.05mm; any deviations are corrected by grinding on an external cylindrical grinder. After runout grinding, a motor-driven rotary indexing head is used to finely grind the tapered outer diameter on a high-precision tool grinder to ensure a smooth and delicate surface. The diameter of the tool tip platform circle is controlled within 0.4±0.05mm. Then, a five-axis nanosecond fiber laser processing machine is used. The tool dimensions are input into the panel for digital modeling, demonstrating whether the 3D tool angles are appropriate and whether there is interference at the back angle. A precision probe is then used to locate the points, and the software generates the machining path. A high-power laser is used for rough cutting using a forward tangent method. Finally, a low-power laser is used in a reverse tangent mode to refine the cutting edge, achieving a smooth, delicate edge without any marks or chipping. After tool processing is complete, the cutting edge is magnified 50 times online to check for chipping. Then, an automatic dimension measuring instrument is used to check the angles and platform dimensions. Only qualified tools are shipped.

[0029] 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 multi-edged stone carving knife with angled edges, characterized in that, The tool includes a tool holder and a tool head. The tool holder has a tool head at its end. The tool head has a conical base and a plurality of cutting edges on the upper surface of the conical base. The cutting edges are triangular prisms that protrude from the upper surface of the conical base and are arranged radially along the conical base.

2. The angled multi-edged stone carving knife according to claim 1, characterized in that, Several cutting edges converge at the tip of the cone base and intersect at a point. The intersection of the several cutting edges is the tip, and a tip platform is formed at the tip, which is parallel to the bottom surface of the cone base.

3. The angled multi-edged stone carving knife according to claim 2, characterized in that, The outer diameter of the blade tip platform is controlled at 0.4±0.05MM.

4. The angled multi-edged stone carving knife according to claim 1, characterized in that, The blade has six blades, which are distributed in a regular hexagonal pyramid shape.

5. A multi-edged stone carving knife with angled edges according to claim 1, characterized in that, The cone angle formed by the tip of the cutter head is 60-90°.

6. A multi-edged stone carving knife with angled edges according to claim 5, characterized in that, The cone angle formed by the tip of the cutter head is 75°.

7. A multi-edged stone carving knife with angled edges according to claim 2, characterized in that, The blade portion has a tapered end at the end away from the tip, and the ridge line of the tapered end does not extend beyond the circumferential surface of the shank portion.

8. A multi-edged stone carving knife with angled edges according to claim 1, characterized in that, The blade edge gradually widens from top to bottom.

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