Woodworking high-speed drill

Abstract

The woodworking high-speed drill comprises a cutter handle, a cutter head, a cutter point and a scribing blade, one end of the cutter head is coaxially and fixedly connected with the cutter handle, the cutter point is fixedly arranged in the middle of the other end of the cutter head, the scribing blade is fixedly arranged on the side edge of the other end of the cutter head, and a blade belt is arranged between the cutter point and the scribing blade. A discharging groove matched with the edge strip is formed in the outer wall of the tool bit, and a main cutting edge is arranged between the edge strip and the discharging groove. The margin is arranged at the end part of the high-speed drill, and the relief angle of the end surface is adjusted through the margin, so that the service life of a cutter is prolonged under the condition that the cutting effect is not obviously reduced.

Description

TECHNICAL FIELD

[0001] The utility model relates to drill bit technical field, especially a high -speed drill of woodworking. BACKGROUND

[0002] In prior art high -speed drill, the included angle between main cutting edge and chip plane of the object to be cut is end face relief angle, and the size of end face relief angle is very important, if end face relief angle is big, the cutting edge is sharp enough, the chip removal effect is good, the cutting effect is good, but the cutting edge strength is low, and the cutting tool life is short, if end face relief angle is small, the cutting edge strength is high, and the cutting tool life is long, but the chip removal effect is poor, and the cutting effect is poor. SUMMARY

[0003] The utility model discloses a high -speed drill of woodworking, which solves the problems of the prior art.

[0004] The utility model discloses a high -speed drill of woodworking, which solves the problems of the prior art.

[0005] A high -speed drill of woodworking, including handle, tool holder, tool tip, scribe and tool holder, one end of tool holder is fixedly connected with handle coaxially through tool holder, the middle part on the other end of tool holder is fixedly provided with tool tip, the side of the other end of tool holder is fixedly provided with scribe, and the blade belt is arranged between tool tip and scribe, the outer wall of tool holder is provided with the material discharge groove that cooperates with blade belt, the material discharge groove extends to the outer wall of tool holder, and the main cutting edge is arranged between blade belt and material discharge groove.

[0006] Further, the width of the blade belt is 0.05mm-0.3mm.

[0007] Further, the blade belt is inclinedly arranged, and the inclination angle of the blade belt is 5°-15°.

[0008] Further, two scribes are arranged on the tool holder, the two scribes are centrally symmetrically arranged, and the two material discharge grooves are centrally symmetrically arranged.

[0009] Further, an inclined surface is arranged between the blade belt and the material discharge groove, the inclination angle of the inclined surface is greater than the inclination angle of the blade belt, and the inclination angle of the inclined surface is 10°-20°.

[0010] Further, a blunt round corner is arranged on the tip of the tool tip, and the radius of the blunt round corner is 0.005mm-0.01mm.

[0011] Further, the included angle of the narrow edge of the tool tip is 28-35°.

[0012] Further, the discharge chute is arranged in a spiral shape.

[0013] Further, the scribe blade has a cylindrical outer surface and a scribe inclined surface, the radius of the cylindrical outer surface is larger than the radius of the tool head, and the included angle between the scribe inclined surface and the scribe inclined surface is 55-65°.

[0014] The woodworker high-speed drill has the advantages that:

[0015] 1) In the present technology, a blade band is arranged on the end of the high-speed drill, and the size of the end face relief angle is adjusted through the blade band, thereby prolonging the tool life without significantly reducing the cutting effect.

[0016] 2) In the present technology, a blunt round corner is arranged on the tip of the tool tip, which can avoid chipping of the tool tip during use, improve the accuracy of tool tip positioning, and reduce vibration during tool use. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a perspective view of the woodworker high-speed drill;

[0018] Figure 2 is a side view of the woodworker high-speed drill;

[0019] Figure 3 is a side view of the scribe blade on the tool head;

[0020] Figure 4 is a connection structure diagram of the blunt round corner on the tool tip;

[0021] Figure 5 is a structure diagram of the inclination angle setting of the scribe blade;

[0022] Figure 6 is a connection structure diagram of the blade band and the inclined surface on the tool head;

[0023] In the figure, 1 is a tool shank, 2 is a tool head, 3 is a tool tip, 4 is a scribe blade, 5 is a tool holder, 6 is a blade band, 7 is a discharge chute, 8 is a main cutting edge, and 9 is an inclined surface. DETAILED DESCRIPTION

[0024] The technical solutions of the present application will be described in detail below with reference to the embodiments. Obviously, the described embodiments are only a part of the embodiments of the present application, not all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application.

[0025] Referring to Figures 1-6 , the present application provides a technical solution:

[0026] The utility model provides a woodworking high speed drill, including shank 1, tool bit 2, tool tip 3, scribe 4 and tool holder 5, one end of tool bit 2 is fixedly connected with shank 1 through tool holder 5 and is coaxial, and the middle part of the other end of tool bit 2 is fixedly provided with tool tip 3, and the side of the other end of tool bit 2 is fixedly provided with scribe 4, is provided with blade zone 6 between tool tip 3 and scribe 4, is provided with the material removal groove 7 of cooperation with blade zone 6 on the outer wall of tool bit 2, the material removal groove 7 extends to the outer wall of tool holder 5, and is provided with main cutting edge 8 between blade zone 6 and material removal groove 7. Tool bit 2, tool tip 3 and scribe 4 are integrally formed. It is provided with inclined surface 9 between blade zone 6 and material removal groove 7, and the inclination angle of inclined surface 9 is greater than the inclination angle of blade zone 6. Wherein, shank 1 and tool holder 5 are integrally formed, tool holder 5 is fixed together with tool bit 2 through welding, tool bit 2 is used to fix tool tip 3 and scribe 4, tool tip 3 plays the role of positioning during processing, scribe 4 is used to cut the inner wall of wood hole, and main cutting edge 8 is used to cut the material left after cutting of tool tip 3 and scribe 4.

[0027] In some embodiments, the width of blade zone 6 is 0.05mm-0.3mm. Blade zone 6 is arranged obliquely, and the inclination angle of blade zone 6 is 5°-15°. Inclined surface 9 is arranged between blade zone 6 and material removal groove 7, and the inclination angle of inclined surface 9 is greater than the inclination angle of blade zone 6, and the inclination angle of inclined surface 9 is 10°-20°. Wherein, if the inclination angle of blade zone 6 is set too large, the strength of the tip of main cutting edge is low, the anti-collapse performance is weakened, the tool life is shortened, and if the inclination angle of blade zone 6 is too small, the tool is easy to burn during processing, the appearance of workpiece is poor, the tool is heated, and the tool life is shortened. If the width of blade zone 6 is too small, the strength of the tip of main cutting edge is low, the anti-collapse performance of the tip is weakened, and the tool life is shortened. If the width of blade zone 6 is too large, the tool is easy to burn during processing, the appearance of workpiece is poor, the tool is heated, and the tool life is shortened. The inclination angle of blade zone 6 is commonly 5°, 10° and 15°, and the inclination angle of inclined surface 9 is commonly 10°, 15° and 20°. The inclination angle of inclined surface 9 is greater than the inclination angle of blade zone 6, for example, when the inclination angle of blade zone 6 is 10°, the inclination angle of inclined surface 9 is 15°.

[0028] In some embodiments, two scribes 4 are arranged on tool bit 2, and the two scribes 4 are arranged symmetrically about the center, and the two material removal grooves 7 are arranged symmetrically about the center. Wherein, the scribe 4 and the material removal groove 7 are both arranged symmetrically about the center, and the advantages of such arrangement are that the force is uniform during the rotation of the high-speed drill, and the high-speed drill is prevented from swinging during high-speed rotation.

[0029] In some embodiments, a blunt round corner is arranged on the tip of tool tip 3, and the radius of the blunt round corner is 0.005mm-0.01mm. Wherein, if the radius of the round corner is too large, the tool tip is too blunt, the resistance is large during processing and use, and the tool tip is easy to break, and if the radius of the round corner is too small, the blunt effect is poor, the tool tip is easy to collapse, and the tool tip is subjected to uneven force, resulting in eccentricity. The commonly used radius of the blunt round corner is 0.005mm and 0.01mm.

[0030] In some embodiments, the included angle of the narrow edge of the tip 3 is 28-35°. In the prior art, the included angle is usually 20°, so the strength of the tip is low, and the tip is easy to break or even break during use. The tip strength can be improved by appropriately increasing the angle, and the service life of the tool is prolonged. The commonly selected included angles are 28°, 30°, 32° and 55°.

[0031] In some embodiments, the discharge groove 7 is spirally arranged, and the inclination angle of the cutting edge on the scribe blade 4 is 18-25°. In the prior art, the included angle of the tip of the main cutting edge 8 is too large, so that the main cutting edge 8 is not sharp enough, and the wood may be burned or even broken during processing. The included angle of the prior art is usually 15°, and the angle is too small, which also causes the tool to break. The sharpness of the main cutting edge 8 can be improved by appropriately increasing the angle, the processing quality of the wood is improved, and the service life of the high-speed wood drill is prolonged. The commonly selected inclination angles of the cutting edge on the scribe blade 4 are 18°, 20°, 23° and 25°. In order to better discharge the wood chips generated after cutting, the discharge groove 7 is spirally arranged.

[0032] In some embodiments, the outer side of the scribe blade 4 is a cylindrical surface, and the inner side is a scribe bevel. The radius of the outer wall of the cylindrical surface is greater than the radius of the tool head 2, and the included angle between the scribe bevels is 55-65°. The scribe blade 4 cuts the inner wall of the wood hole. If the diameter of the hole cut by the scribe blade 4 is the same as the diameter of the tool head 2, there is friction between the tool head 2 and the inner wall of the hole, which increases the processing resistance and reduces the speed of the high-speed wood drill, ultimately leading to a decrease in processing efficiency. At the same time, the end of the tip 3 is higher than the end of the scribe blade 4, and during processing, the end of the tip 3 first contacts the wood for positioning. If the included angle between the scribe bevels is too large, the scribe blade 4 will not be sharp enough, and there will be burrs or edge blowout on the board during processing. The commonly selected included angles are 55°, 60° and 65°. Appropriate reduction of the angle can improve the sharpness of the scribe blade and improve the processing quality of the wood.

[0033] In the description of the present application, it should be understood that the terms "upper", "lower", "bottom", "one end", "top", "middle", "the other end", "coaxial", "one side", "inner", "front", "central", "both ends" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application.

[0034] In the utility model, unless another definite provision and limitation, the term "arrange", "install", "connect", "fix", "hinge" and so on term should do broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through intermediate medium, can be two element internal communication or two element's mutual action relation, unless another definite limitation, for the ordinary skill in the art, can understand the above-mentioned term in the utility model specific meaning according to specific circumstances.

[0035] The above is only the preferred embodiment of the utility model, it should be understood that the utility model is not limited to the form disclosed herein, should not be considered as excluding other embodiments, and can be used in various other combinations, modifications and environments, and can be within the scope of the concept described herein, by the above teaching or related art or knowledge is changed.And the personnel of the change and variation of the spirit and scope of the utility model without deviating from the utility model, then all should be within the scope of protection of the claims of the utility model.

Claims

1. A wood working high speed drill characterized by: The utility model provides a cutting tool, including handle (1), cutter head (2), cutter tip (3), scribe blade (4) and tool holder (5), one end of cutter head (2) is coaxial fixed connection with handle (1) through tool holder (5), the other end of cutter head (2) is fixedly arranged with cutter tip (3) on the middle part, scribe blade (4) is fixedly arranged on the side of the other end of cutter head (2), the blade band (6) is arranged between cutter tip (3) and scribe blade (4), the outer wall of cutter head (2) is provided with the material discharge groove (7) with the blade band (6) cooperation, the material discharge groove (7) extends to the outer wall of tool holder (5), the main cutting edge (8) is arranged between the blade band (6) and the material discharge groove (7).

2. A high speed wood drill according to claim 1, characterized in that: The width of the blade band (6) is 0.05mm-0.3mm.

3. A high speed wood drill according to claim 1 or 2, characterized in that: The blade band (6) is obliquely arranged, and the inclination angle of the blade band (6) is 5°-15°.

4. A high speed wood drill according to claim 3, characterized in that: Two scribe blades (4) are arranged on the cutter head (2) and are symmetrically arranged about the center.

5. A high speed wood drill according to claim 4, characterized in that: An inclined surface (9) is arranged between the blade band (6) and the material discharge groove (7), the inclination angle of the inclined surface (9) is greater than the inclination angle of the blade band (6), and the inclination angle of the inclined surface (9) is 10°-20°.

6. A high speed wood drill according to claim 1 or 2, characterized in that: A blunt round corner is arranged on the tip of the cutter tip (3), and the radius of the blunt round corner is 0.005mm-0.01mm.

7. A high speed wood drill according to claim 1 or 2, characterized in that: The included angle of the narrow edge of the cutter tip (3) is 28°-35°.

8. A high speed wood drill according to claim 1 or 2, characterized in that: The material discharge groove (7) is spirally arranged.

9. A high speed wood drill according to claim 1 or 2, characterized in that: The outer side of the scribe blade (4) is a cylindrical surface, and the inner side is a scribe inclined surface, the radius of the outer wall of the cylindrical surface is greater than the radius of the cutter head (2), and the included angle between the scribe inclined surface and the scribe inclined surface is 55°-65°.

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