Multifunctional integrated drill bit

Abstract

The multifunctional integrated drill bit comprises a drill bit body, a drilling end is arranged at one end of the drill bit body, and a tool withdrawal groove is formed in the end, away from the drilling end, of the drill bit body. A conical chamfering blade part is arranged at one end of the tool withdrawal groove away from the drill; a cylindrical section is arranged at the end, away from the tool withdrawal groove, of the conical chamfering blade. A clamping handle is arranged at one end, far away from the conical chamfering blade part, of the cylindrical section; and a grinding ring is sleeved outside the conical chamfering blade part. In order to solve the problems that in the prior art, three procedures and three tools are needed, time and labor are wasted, the machined chamfering error is large, and the grinding quality cannot be guaranteed, the multifunctional integrated drill bit for drilling, chamfering and grinding is provided, the three procedures of drilling, chamfering and grinding are completed at a time, the machining quality is guaranteed by equipment, manual operation errors are reduced, and the machining efficiency is improved. And the effects of high efficiency and high quality are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of engineering equipment, in particular to a multifunctional integrated drill bit for drilling, chamfering, grinding, etc. Background Art

[0002] After drilling holes in engineering processing, it is generally required to chamfer 2-3mm, remove burrs, and grind the periphery of the hole. The chamfer is generally 45°, and there are also cases of 30° or 60°, which plays a role in guiding the installation of bolts, preventing burrs from cutting other components and personnel, and smoothing the contact surface. For example, the public document "Technical Specifications for High-Strength Bolt Connections of Steel Structures" has the following strong provisions: The surface of the steel plate at the connection should be flat, free of welding spatter, burrs, and oil stains. The usual construction method is to drill holes first, then change to a large-diameter drill bit for chamfering, and finally arrange workers to use an angle grinder to deburr and grind. Some are manually made by turning a rod-shaped grinding head around the edge of the hole 2-3 times. Obviously, the above processing method requires three steps and three tools, which is time-consuming and labor-intensive, and the chamfering error of the processing is large, and the quality of grinding cannot be guaranteed. Therefore, it is necessary to improve the existing technology. Utility Model Content

[0003] The purpose of the utility model is to provide a multifunctional integrated drill bit, which can solve the problem that multiple tools and multiple processes are needed to complete chamfering processing in the prior art, and the grinding quality is poor.

[0004] The purpose of this utility model is achieved through the following technical solutions:

[0005] A multifunctional integrated drill bit comprises a drill bit 1, wherein a drilling end is arranged at one end of the drill bit 1, and a tool retreat groove 2 is arranged at the end away from the drilling end; a conical chamfered edge portion 3 is arranged at the end of the tool retreat groove 2 away from the drill bit 1; a cylindrical section 14 is arranged at the end of the conical chamfered edge portion 3 away from the tool retreat groove 2; a clamping handle 7 is arranged at the end of the cylindrical section 14 away from the conical chamfered edge portion 3; a grinding ring 4 is arranged on the outer surface of the conical chamfered edge portion 3.

[0006] Furthermore, the drill bit 1 is a twist drill, and its drilling end is a cone; at least one spiral blade and a cutting groove 10 are provided on the drill bit 1, and the cutting groove 10 extends in a spiral shape to the top of the cylindrical section 14.

[0007] Furthermore, the outer diameter of the tool recess 2 is smaller than the outer diameter of the drill bit 1 .

[0008] Furthermore, the conical chamfered edge portion 3 extends upward from the top of the tool recess 2 , and its size gradually increases, with a maximum outer diameter greater than the outer diameter of the drill bit 1 .

[0009] Furthermore, the outer diameter of the cylindrical section 14 is smaller than the maximum outer diameter of the conical chamfered edge portion 3 .

[0010] Furthermore, a thread is provided on the outer surface of the cylindrical section 14 , and a nut 6 is threadedly connected; a spring 5 is sleeved on the cylindrical section 14 ; one end of the spring 5 is fixedly connected to the lower surface of the nut 6 , and the other end is fixedly connected to the upper end of the grinding ring 4 .

[0011] Furthermore, at least two guide grooves 11 are symmetrically arranged in the circumferential direction of the conical chamfered edge portion 3 .

[0012] Furthermore, the grinding ring 4 is a circular ring, and the lower surface of the grinding ring 4 is symmetrically provided with conical protrusions 9 equal in number to the guide grooves 11 along the circumferential direction of the inner ring, and the conical protrusions 9 are slidably matched with the guide grooves 11.

[0013] Furthermore, horizontal grinding teeth 8 are provided on the lower end plane of the grinding ring 4, and circumferential grinding teeth are provided on the outer surface of the conical protrusion 9. The horizontal grinding teeth are used to grind the plane around the hole, and the circumferential grinding teeth are used to grind the chamfered part; a spring seat 12 is provided on the upper end surface of the grinding ring 4, and the spring 5 is fixedly connected to the grinding ring 4 through the spring seat 12.

[0014] Furthermore, the taper of the conical protrusion 9 is the same as the taper of the conical chamfered edge portion 3 .

[0015] The utility model aims to solve the problems that the prior art requires three-step processes and three tools, which is time-consuming and labor-intensive, and the chamfering error is large, and the quality of grinding cannot be guaranteed. The utility model provides a multifunctional integrated drill bit for drilling, chamfering and grinding. The three processes of drilling, chamfering and grinding are completed at one time, the processing quality is guaranteed by the equipment, and manual operation errors are reduced, thereby achieving high efficiency and high quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the assembly structure of a multifunctional integrated drill bit of the utility model;

[0017] Figure 2 This is a schematic diagram of the drill bit structure of the utility model;

[0018] Figure 3 It is a top view and a cross-sectional view along the AA direction of the grinding ring of the utility model.

[0019] The following are the descriptions of the reference numerals:

[0020] 1. Drill bit; 2. Back-cut groove; 3. Conical chamfered edge; 4. Grinding ring; 5. Spring; 6. Nut; 7. Clamping handle; 8. Horizontal grinding teeth; 9. Conical protrusion; 10. Cutting groove; 11. Guide groove; 12. Spring seat; 13. Circumferential grinding teeth; 14. Cylindrical section. DETAILED DESCRIPTION

[0021] The embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

[0022] The following describes the embodiments of the present disclosure through specific examples, and those skilled in the art can easily understand other advantages and effects of the present disclosure from the contents disclosed in this specification. Obviously, the described embodiments are only a part of the embodiments of the present disclosure, rather than all of the embodiments. The present disclosure can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present disclosure. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in the field without making creative work are within the scope of protection of the present disclosure.

[0023] Embodiment 1

[0024] The utility model discloses a multifunctional integrated drill bit, which can realize multiple functions such as drilling, chamfering and grinding. Figures 1 to 3 As shown, it includes a drill bit 1, a drilling end is arranged at one end of the drill bit 1, and a tool relief groove 2 is arranged at the end of the drill bit 1 away from the drilling end. A conical chamfered edge portion 3 is arranged at the end of the tool relief groove 2 away from the drill bit 1, and a cylindrical section 14 is arranged at the end of the conical chamfered edge portion 3 away from the tool relief groove 2. A clamping handle 7 is arranged at the end of the cylindrical section 14 away from the conical chamfered edge portion 3. A grinding ring 4 is arranged on the outer surface of the conical chamfered edge portion 3.

[0025] The utility model uses a drill bit 1 to drill holes, uses a conical chamfering blade 3 to chamfer, and uses a grinding ring 4 to grind the hole and the chamfer, integrating multiple functions of drilling, chamfering and grinding.

[0026] Further, as an embodiment of the present application, the drill bit 1 is a twist drill, and its drilling end is a cone. The drill bit 1 is provided with at least one spiral blade and a cutting groove 10. And the cutting groove 10 extends uninterruptedly in a spiral shape to the top of the cylindrical section 14. It is used to guide the cut chips out of the integrated drill bit.

[0027] Further, as an embodiment of the present application, the outer diameter of the undercut groove 2 is smaller than the outer diameter of the drill bit 1, about 5 mm smaller, and there is no cutting edge on the undercut groove 2. Used for undercutting.

[0028] Further, as an embodiment of the present application, the conical chamfering edge portion 3 extends upward from the top of the undercut groove 2, and the size gradually increases, and the maximum outer diameter is 5-8 mm larger than the outer diameter of the drill bit 1. It is used for processing chamfering.

[0029] Further, as an embodiment of the present application, the outer diameter of the cylindrical section 14 is smaller than the maximum outer diameter of the conical chamfered edge portion 3 by about 5 mm. The cylindrical section 14 has a continuous cutting groove and no cutting edge.

[0030] Furthermore, as an embodiment of the present application, the clamping handle 7 is in the shape of a solid cylinder or a small-taper cone, and is used to fix the integrated drill bit on the drilling rig.

[0031] Further, as an embodiment of the present application, the outer surface of the cylindrical section 14 is provided with a thread, and a nut 6 is threadedly connected. A spring 5 is sleeved on the cylindrical section 14. One end of the spring 5 is fixedly connected to the lower surface of the nut 6, and the other end is fixedly connected to the upper end of the grinding ring 4.

[0032] Furthermore, as an embodiment of the present application, at least two guide grooves 11 are symmetrically arranged in the circumferential direction of the conical chamfered edge portion 3 .

[0033] Further, as an embodiment of the present application, the grinding ring 4 is a circular ring, and the lower surface of the grinding ring 4 is symmetrically provided with conical protrusions 9 equal in number to the guide grooves 11 along the circumferential direction of the inner ring, and the conical protrusions 9 are slidably matched with the guide grooves 11.

[0034] Furthermore, the taper of the conical protrusion 9 is the same as the taper of the conical chamfered edge portion 3 .

[0035] Furthermore, a horizontal grinding tooth 8 is provided on the lower plane of the grinding ring 4, and a circumferential grinding tooth is provided on the outer surface of the conical protrusion 9. The horizontal grinding tooth grinds the plane around the hole, and the circumferential grinding tooth grinds the chamfered part. A spring seat 12 is provided on the upper end surface of the grinding ring 4, and the spring 5 is fixedly connected to the grinding ring 4 through the spring seat 12.

[0036] The maximum outer diameter of the circumferentially ground gear is 5-6 mm larger than the outer diameter of the drill bit 1 and slightly smaller than the maximum outer diameter of the conical chamfered edge portion 3, thereby achieving a grinding effect.

[0037] The guide groove 11 and the conical protrusion 9 are provided so that the grinding ring 4 can slide up and down, ensuring that the conical chamfering edge portion can reliably chamfer without over-cutting the drilled hole.

[0038] The spring 5 passes through the drill rod, with one end contacting the spring seat of the grinding ring and the other end contacting the nut. The preload force is adjusted by adjusting the relative position of the nut, thereby automatically adapting the relative position of the grinding ring relative to the drilling plane to ensure that the grinding is neither over-grinded nor under-grinded.

[0039] The clamping handle is the same as the ordinary twist drill bit and is used to fix it on the drilling rig.

[0040] The utility model innovatively designs a common twist drill, divides it into functional sections, and adapts to a grinding ring, so that the three processes of drilling, chamfering and grinding can be completed in one go with one clamping, the processing efficiency is significantly improved, and the quality of the chamfering is significantly improved.

[0041] In the description of the present invention, it should be understood that the terms "middle", "length", "up", "down", "front", "back", "vertical", "horizontal", "inside", "outside", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the first feature "on" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. "Multiple" means at least two, such as two, three, etc., unless otherwise clearly and specifically limited.

[0043] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0044] The above is only for explaining the implementation mode of the utility model and is not used to limit the utility model. For those skilled in the art, any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the utility model without creative work should be included in the protection scope of the utility model.

Claims

1. A multifunctional integrated drill bit, comprising a drill bit (1), characterized in that: A drilling end is arranged at one end of the drill bit (1), and a tool relief groove (2) is arranged at the end away from the drilling end; a conical chamfering edge portion (3) is arranged at the end of the tool relief groove (2) away from the drill bit (1); a cylindrical section (14) is arranged at the end of the conical chamfering edge portion (3) away from the tool relief groove (2); a clamping handle (7) is arranged at the end of the cylindrical section (14) away from the conical chamfering edge portion (3); and a grinding ring (4) is arranged on the outer surface of the conical chamfering edge portion (3).

2. The multifunctional integrated drill bit according to claim 1, characterized in that: The drill bit (1) is a twist drill, and its drilling end is a cone; at least one spiral blade and a cutting groove (10) are provided on the drill bit (1), and the cutting groove (10) extends in a spiral shape to the top of the cylindrical section (14).

3. The multifunctional integrated drill bit according to claim 1, characterized in that: The outer diameter of the tool recess (2) is smaller than the outer diameter of the drill bit (1).

4. The multifunctional integrated drill bit according to claim 1, characterized in that: The conical chamfered edge portion (3) extends upward from the top of the tool retreat groove (2), gradually increases in size, and has a maximum outer diameter greater than the outer diameter of the drill bit (1).

5. The multifunctional integrated drill bit according to claim 1, characterized in that: The outer diameter of the cylindrical section (14) is smaller than the maximum outer diameter of the conical chamfered edge portion (3).

6. The multifunctional integrated drill bit according to claim 5, characterized in that: The outer surface of the cylindrical section (14) is provided with a thread which is connected to a nut (6); a spring (5) is sleeved on the cylindrical section (14); one end of the spring (5) is fixedly connected to the lower surface of the nut (6), and the other end is fixedly connected to the upper end of the grinding ring (4).

7. The multifunctional integrated drill bit according to claim 1, characterized in that: At least two guide grooves (11) are symmetrically arranged in the circumferential direction of the conical chamfered edge portion (3).

8. The multifunctional integrated drill bit according to claim 7, characterized in that: The grinding ring (4) is a circular ring, and the lower surface of the grinding ring (4) is symmetrically provided with conical protrusions (9) equal in number to the guide grooves (11) along the circumferential direction of the inner ring, and the conical protrusions (9) are slidably matched with the guide grooves (11).

9. The multifunctional integrated drill bit according to claim 8, characterized in that: The lower end plane of the grinding ring (4) is provided with horizontal grinding teeth (8), and the outer surface of the conical protrusion (9) is provided with circumferential grinding teeth. The horizontal grinding teeth grind the plane around the hole, and the circumferential grinding teeth grind the chamfered part. The upper end surface of the grinding ring (4) is provided with a spring seat (12), and the spring (5) is fixedly connected to the grinding ring (4) through the spring seat (12).

10. The multifunctional integrated drill bit according to claim 8, characterized in that: The taper of the conical protrusion (9) is the same as the taper of the conical chamfered edge portion (3).

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