Woodworking hinge drill

Abstract

The woodworking hinge drill comprises a tool handle, a tool body, a tool bit and a tool nose, one end of the tool body is coaxially and fixedly connected with the tool handle, the tool bit is fixedly arranged at the other end of the tool body, the tool nose matched with the axis of the tool body is fixedly arranged in the middle of the tool bit, and end cutting faces are arranged on the two sides of the tool bit in a central symmetry mode. First chip grooves are formed in the two side faces of the tool bit in a central symmetry mode, second chip grooves matched with the first chip grooves are formed in the side wall of the tool body, edge strips are arranged on the end cutting faces, and end face cutting edges are formed between the edge strips and the first chip grooves. The edge strip is arranged on the end part cutting surface, and the relief angle of the end surface is adjusted through the edge strip, so that the service life of the cutter is prolonged under the condition that the cutting effect is not obviously reduced.

Description

Technical Field

[0001] This utility model relates to the field of drill bit technology, and in particular to a woodworking hinge drill. Background Technology

[0002] In existing reamers, the angle between the cutting face and the chip plane of the workpiece is called the clearance angle. The size of the clearance angle is crucial. A large clearance angle results in a sufficiently sharp cutting edge, good chip removal, and good cutting performance, but also lower cutting edge strength, making it prone to chipping and reducing tool life. Conversely, a small clearance angle results in high cutting edge strength and long tool life, but also poor chip removal, increased susceptibility to material burning, and poor cutting performance. Simply changing the clearance angle makes it difficult to balance both tool life and cutting performance. Utility Model Content

[0003] The purpose of this utility model is to overcome the shortcomings of the existing technology and provide a woodworking hinge drill.

[0004] The objective of this utility model is achieved through the following technical solution:

[0005] A woodworking hinge drill includes a handle, a blade, a head, and a tip. One end of the blade is coaxially and fixedly connected to the handle. The head is fixedly mounted on the other end of the blade. A tip, which mates with the axis of the blade, is fixedly mounted on the middle of the head. End cutting surfaces are centrally symmetrically arranged on both sides of the head. First chip removal grooves are centrally symmetrically arranged on both sides of the head. A second chip removal groove, which mates with the first chip removal groove, is provided on the side wall of the blade. A cutting edge is provided on the end cutting surface, and the cutting edge and the first chip removal groove form an end face cutting edge.

[0006] Furthermore, a side cutting edge is formed between the first chip removal groove and the side wall of the cutter head, and a through chip separation groove is provided on the end cutting surface.

[0007] Furthermore, the inclination angle of the cutting edge is 5° to 15°, and the width of the cutting edge is 0.05mm to 0.3mm.

[0008] Furthermore, chip-dispersing grooves are provided on the end cutting surfaces on both sides of the blade tip, and the chip-dispersing grooves are arc-shaped.

[0009] Furthermore, the depth of the chip-separating groove is 0.2–0.5 mm.

[0010] Furthermore, the inclination angle of the end cutting surface is greater than the inclination angle of the cutting edge, and the inclination angle of the end cutting surface is 10° to 20°.

[0011] Furthermore, the first chip removal groove is a spiral groove, and the second chip removal groove is a planar groove or a cylindrical groove.

[0012] Furthermore, the two ends of the blade extend to the outer side of the blade body.

[0013] Furthermore, the rake angle of the end face cutting edge is 18–25°.

[0014] The beneficial effects of this utility model are:

[0015] 1) In this technology, a cutting edge is provided on the end cutting surface, and the size of the end face clearance angle is adjusted by the cutting edge, thus extending the tool life without significantly reducing the cutting effect.

[0016] 2) In this technology, a chip-dispersing groove is provided on the cutting surface at the end of the cutter head. Under the action of the chip-dispersing groove, the wood chips generated during processing can be efficiently discharged, which can effectively improve the processing efficiency. Attached Figure Description

[0017] Figure 1 This is a 3D structural diagram of the woodworking hinge drill.

[0018] Figure 2 This is a side view of the woodworking hinge drill.

[0019] Figure 3 This is the main structural view of the woodworking hinge drill.

[0020] Figure 4 This is a diagram showing the connection structure of the cutting edge.

[0021] In the figure, 1-handle, 2-blade, 3-blade head, 4-blade tip, 5-end cutting surface, 6-first chip removal groove, 7-second chip removal groove, 8-end face cutting edge, 9-side cutting edge, 10-chip separating groove, 11-cutting band. Detailed Implementation

[0022] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0023] See Figures 1-4 This utility model provides a technical solution:

[0024] A woodworking hinge drill includes a handle 1, a blade 2, a head 3, and a tip 4. One end of the blade 2 is coaxially and fixedly connected to the handle 1. The head 3 is fixedly mounted on the other end of the blade 2. A tip 4, which mates with the axis of the blade 2, is fixedly mounted on the middle of the head 3. End cutting surfaces 5 are centrally symmetrically arranged on both sides of the head 3. First chip removal grooves 6 are centrally symmetrically arranged on both sides of the head 3. A second chip removal groove 7, which mates with the first chip removal groove 6, is provided on the side wall of the blade 2. A cutting edge 11 is provided on the end cutting surface 5, forming an end face cutting edge 8 between the cutting edge 11 and the first chip removal groove 6. The first chip removal groove 6 is a spiral groove, and the second chip removal groove 7 is a planar groove or a cylindrical groove. The two ends of the head 3 extend to the outer side of the blade 2. The handle 1, blade 2, and blade head 3 are welded together. A mounting groove is provided at the end of the blade 2, and the blade head 3 is fixed in the mounting groove. The blade tip 4 is integrally formed with the blade head 3. The blade tip 4 serves a positioning function during wood processing. The end cutting surface 5 and the side cutting edge 9 are both used to cut the wood. The first chip removal groove 6 is used to remove wood chips generated during processing, which are then discharged through the second chip removal groove 7.

[0025] In some embodiments, a side cutting edge 9 is formed between the first chip removal groove 6 and the side wall of the cutter head 3, and a through chip-dispersing groove 10 is provided on the end cutting surface 5. The chip-dispersing groove 10 on the cutter head 3 allows for efficient removal of wood chips generated during processing, effectively improving processing efficiency.

[0026] In some embodiments, the inclination angle of the cutting edge 11 is 5° to 15°, and the width of the cutting edge 11 is 0.05mm to 0.3mm. The inclination angle of the end cutting surface 5 is greater than the inclination angle of the cutting edge 11, and the inclination angle of the end cutting surface 5 is 10° to 20°. If the inclination angle of the cutting edge 11 is too large, the tip strength of the end face cutting edge 8 will be low, the chipping resistance of the tip will be weakened, and the tool life will be shortened. If the inclination angle of the cutting edge 11 is too small, it is easy to burn material during machining, resulting in a poor workpiece appearance and increased tool heat, which will also shorten tool life. If the width of the cutting edge 11 is too small, the tip strength of the end face cutting edge 8 will be low, the chipping resistance of the tip will be weakened, and the tool life will be shortened. If the width of the cutting edge 11 is too large, it is easy to burn material during machining, resulting in a poor workpiece appearance and increased tool heat, which will also shorten tool life. The commonly used inclination angles of the cutting edge 11 are 5°, 10°, and 15°, and the commonly used inclination angles of the end cutting surface 5 are 10°, 15°, and 20°. The inclination angle of the end cutting surface 5 is greater than the inclination angle of the cutting edge 11. For example, when the inclination angle of the cutting edge 11 is 10°, the inclination angle of the end cutting surface 5 is 15°.

[0027] In some embodiments, the depth of the chip-breaking groove 10 is 0.2–0.5 mm. Chip-breaking grooves 10 are provided on the end cutting surfaces 5 on both sides of the blade tip 4, and the chip-breaking grooves 10 are arc-shaped. If the depth of the chip-breaking groove 10 is too deep, the strength of the end face cutting edge 8 will be significantly weakened, reducing the tool life. If the depth of the chip-breaking groove 10 is too shallow, the chip-breaking effect will be poor, the increase in chip removal space will be insignificant, and material may even get stuck and burn at the chip-breaking groove 10 position, resulting in poor chip removal.

[0028] In some embodiments, the rake angle of the end face cutting edge 8 is 18–25°. Commonly used included angles are 18°, 20°, and 25°. In existing products, this included angle is mostly 15–18°, which makes the end face cutting edge 8 not sharp enough, and may cause material burning or even tool breakage during processing. Appropriately increasing this angle can improve the sharpness of the end face cutting edge 8, improve processing quality, and extend tool life.

[0029] In the description of this utility model, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "other end", "coaxial", "one side", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They 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. Therefore, they should not be construed as limitations on this utility model.

[0030] In this utility model, unless otherwise explicitly specified and limited, the terms "setting", "installation", "connection", "fixing", "hinged" and other such terms 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 or an electrical connection; 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.

[0031] The above description is merely a preferred embodiment of this utility model. It should be understood that this utility model is not limited to the forms disclosed herein and should not be construed as excluding other embodiments. It can be used in various other combinations, modifications, and environments, and can be altered within the scope of the concept described herein through the above teachings or related technologies or knowledge. Modifications and variations made by those skilled in the art that do not depart from the spirit and scope of this utility model should be protected within the scope of the appended claims.

Claims

1. A woodworking hinge drill, characterized in that: The tool includes a handle (1), a blade (2), a blade head (3), and a blade tip (4). One end of the blade (2) is coaxially and fixedly connected to the handle (1). The blade head (3) is fixedly mounted on the other end of the blade (2). The blade tip (4) is fixedly mounted on the middle part of the blade head (3) and mates with the axis of the blade (2). The blade head (3) has end cutting surfaces (5) arranged symmetrically on both sides. The blade head (3) has first chip removal grooves (6) arranged symmetrically on both sides. The side wall of the blade (2) has a second chip removal groove (7) that mates with the first chip removal groove (6). The end cutting surface (5) has a cutting edge (11). The cutting edge (11) and the first chip removal groove (6) form an end face cutting edge (8).

2. A woodworking hinge drill according to claim 1, characterized in that: A side cutting edge (9) is formed between the first chip removal groove (6) and the side wall of the cutter head (3), and a through chip removal groove (10) is provided on the end cutting surface (5).

3. A woodworking hinge drill according to claim 1 or 2, characterized in that: The inclination angle of the blade (11) is 5° to 15°, and the width of the blade (11) is 0.05mm to 0.3mm.

4. A woodworking hinge drill according to claim 2, characterized in that: The chip-splitting grooves (10) are provided on the end cutting surfaces (5) on both sides of the blade tip (4), and the chip-splitting grooves (10) are arc-shaped.

5. A woodworking hinge drill according to claim 2, characterized in that: The depth of the chip-breaking groove (10) is 0.2 to 0.5 mm.

6. A woodworking hinge drill according to claim 1 or 2, characterized in that: The inclination angle of the end cutting surface (5) is greater than the inclination angle of the cutting edge (11), and the inclination angle of the end cutting surface (5) is 10° to 20°.

7. A woodworking hinge drill according to claim 1 or 2, characterized in that: The first chip removal groove (6) is a spiral groove, and the second chip removal groove (7) is a planar groove or a cylindrical groove.

8. A woodworking hinge drill according to claim 1 or 2, characterized in that: The two ends of the blade (3) extend to the outer side of the blade body (2).

9. A woodworking hinge drill according to claim 1 or 2, characterized in that: The rake angle of the end face cutting blade (8) is 18-25°.

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