A three-blade nine-surface hinge drill

Abstract

The utility model relates to a kind of three-blade nine-face hinge drill, including tool shank, three groups of tool bodies are evenly provided on the tool shank, and the adjacent two groups of tool bodies are formed with chip pocket, and intermediate positioning head is welded in the middle between three groups of tool bodies, the side of each group of tool bodies opposite with the chip pocket is welded with main blade, and two side blades are welded on the outer wall of each group of tool bodies, by welding one main blade on the side of each group of tool bodies and welding two side blades on the outer wall, three-blade nine-face chip removal structure is formed, and when chip removal, it is reasonable to set between each other, stress is uniform, can improve overall machining intensity, delay wear, to effectively improve processing efficiency.

Description

Technical Field

[0001] This utility model relates to the field of hinge drill technology, and in particular to a three-bladed, nine-sided hinge drill. Background Technology

[0002] Currently, in wood processing, to improve processing quality and efficiency, woodworking machinery is now fully utilized. During machining, the requirements for cutting tools are becoming increasingly stringent. Commonly used tools include two-flute and three-flute hinged drills. Three-flute hinged drills utilize tungsten carbide alloy tips. This material has high hardness and wear resistance, making the product more durable, enhancing sharpness, and significantly extending its service life. Its design employs a three-flute structure with three sharp tips and a precisely balanced center point, making hole drilling easy and effortless. The sharp central tip positions the hole, providing more precise and stable drilling results, while the precision-ground cutting edge can cut clean, flat blind holes.

[0003] Existing three-blade hinge drills typically have three cutting blades and three shoulder blades, with the shoulder blades and cutting blades being inlaid into the drill body. As the three shoulder blades are side cutting edges, their strength is limited and wear is aggravated when the rotation speed is too high, resulting in low drilling efficiency. Utility Model Content

[0004] The purpose of this utility model is to provide a three-bladed, nine-faced hinge drill, which forms a three-bladed, nine-faced chip structure by welding a main blade to the side of each set of cutter bodies and two side blades to the outer wall. During chip processing, the chips are reasonably arranged and the force is evenly distributed, which can improve the overall processing strength, delay wear, and thus effectively improve processing efficiency.

[0005] To solve the above-mentioned technical problems, the present invention is solved by the following technical solution: a three-bladed nine-sided hinge drill, including a handle, on which three sets of blades are evenly arranged, a chip removal port is formed between two adjacent sets of blades, a middle positioning head is welded in the middle between the three sets of blades, a main blade is welded on the side of each set of blades opposite to the chip removal port, and two side blades are welded on the outer wall of each set of blades.

[0006] Preferably, the distance between the two side blades on the outer wall of each blade group is 4-6.5mm.

[0007] More preferably, the upper end of the side blade is provided with an inverted V-shaped blade tip.

[0008] More preferably, the main blade and side blades are coated with a nano-coating.

[0009] More preferably, the blade body has a fan-shaped structure, an arc-shaped chip discharge port is provided on one side of the blade body, the main cutting edge is welded to the other side of the blade body, the side cutting edge is welded to the arc-shaped outer wall of the blade body, and an arc-shaped chip groove is provided at the top of the blade body.

[0010] In a further preferred embodiment, the three sets of tool holders form a circular structure with an outer diameter of 35-37 mm.

[0011] More preferably, the knife handle includes a first handle and a second handle, the three sets of knife bodies and the first handle are an integral structure, the second handle has a connecting hole, and the connecting hole is provided with an internal hexagonal screw to connect the first handle and the second handle.

[0012] The beneficial effects of this utility model are as follows: It includes a tool holder with three sets of blades evenly arranged on it. A chip removal port is formed between adjacent sets of blades. A central positioning head is welded between the three sets of blades. A main cutting edge is welded to the side of each set of blades opposite to the chip removal port. Two side cutting edges are welded to the outer wall of each set of blades. By welding a main cutting edge to the side of each set of blades and two side cutting edges to the outer wall, a three-bladed, nine-faceted chip structure is formed. During chip processing, the chips are rationally positioned and evenly stressed, improving overall processing strength and delaying wear, thereby effectively improving processing efficiency. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the structure of this utility model. Detailed Implementation

[0014] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0015] like Figure 1 As shown, a three-bladed, nine-faceted hinged drill includes a handle 1. Three sets of blades 2 are evenly arranged on the handle 1, with a chip removal port 3 formed between adjacent sets of blades 2. A central positioning head 4 is welded between the three sets of blades 2. A main cutting edge 5 is welded to the side of each set of blades 2 opposite to the chip removal port 3. Two side cutting edges 6 are welded to the outer wall of each set of blades 2. By welding a main cutting edge 5 to the side of each set of blades 2 and two side cutting edges 6 to the outer wall, a three-bladed, nine-faceted chip structure is formed. During chip processing, the chips are rationally positioned and evenly stressed, improving overall processing strength, delaying wear, and thus effectively improving processing efficiency.

[0016] In this embodiment, the distance between the two side blades 6 on the outer wall of each set of blade bodies 2 is 4-6.5mm. The upper end of the side blade 6 is provided with an inverted V-shaped blade tip 7. The blade body 2 has a fan-shaped structure. An arc-shaped chip discharge port 3 is opened on one side of the blade body 2. The main blade 5 is welded to the other side of the blade body 2. The side blades 6 are welded to the arc-shaped outer wall of the blade body 2. An arc-shaped chip groove 8 is opened at the top of the blade body 2. By welding the two side blades 6 to the outer wall of the blade body 2 in a reasonable distribution, the two side blades 6 and one main blade 5 on each set of blade bodies 2 can form a three-point support for chip cutting. Furthermore, the arc-shaped chip groove 8 opened at the top of the blade body 2, in conjunction with the chip cutting of the two side blades 6 and one main blade 5, can increase the strength and wear resistance of the two side blades 6 and one main blade 5, and extend their service life.

[0017] In this embodiment, the main blade 5 and the side blade 6 are coated with a nano-coating, which can further improve the strength and wear resistance of the main blade 5 and the side blade 6.

[0018] In this embodiment, the three sets of knife handles 1 form a circular structure with an outer diameter of 35-37mm. Of course, the outer diameter can also be set according to the actual size of the wood hole to be processed.

[0019] In this embodiment, the tool holder 1 includes a first handle 11 and a second handle 12. The three sets of tool bodies 2 and the first handle 11 are an integral structure. The second handle 12 has a connecting hole, and the connecting hole is provided with an internal hexagonal screw that connects the first handle 11 and the second handle 12. In this way, the second handle 12 with different diameters and lengths can be disassembled and replaced according to the clamping head of different machines, so as to facilitate reasonable clamping and connection.

[0020] Based on the concept of this utility model, there may be changes in the specific implementation methods and application scope. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A three-lip nine-face hinge drill characterized by: The tool includes a handle, on which three sets of blades are evenly arranged. A chip removal port is formed between two adjacent sets of blades. A central positioning head is welded between the three sets of blades. A main cutting edge is welded to the side of each set of blades opposite to the chip removal port. Two side cutting edges are welded to the outer wall of each set of blades.

2. A three blade nine facet hinge drill according to claim 1 wherein: The distance between the two side blades on the outer wall of each blade is 4-6.5mm.

3. A three blade nine facet hinge drill according to claim 1 wherein: The upper end of the side blade is provided with an inverted V-shaped tip.

4. A three-flute, nine-sided hinged drill according to claim 1, characterized in that: The main blade and side blades are coated with a nano-coating.

5. A three-flute, nine-sided hinge drill according to claim 1, characterized in that: The blade body has a fan-shaped structure, with an arc-shaped chip discharge port on one side, the main cutting edge welded to the other side, the side cutting edge welded to the arc-shaped outer wall of the blade body, and an arc-shaped chip groove at the top of the blade body.

6. A three-flute, nine-sided hinge drill according to claim 1, characterized in that: The three sets of tool holders form a circular structure with an outer diameter of 35-37mm.

7. A three-flute, nine-sided hinged drill according to claim 1, characterized in that: The handle includes a first handle and a second handle. The three sets of blades and the first handle are an integral structure. The second handle has a connecting hole, and the connecting hole contains an internal hexagonal screw that connects the first handle and the second handle.

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