Diamond drill bit with positioning function

Abstract

The utility model discloses a diamond drill bit with a positioning function, which comprises a positioning needle and a bottom cleaning diamond cutter, a cutter head is coaxially and fixedly arranged at one end of a cutter body, the positioning needle is coaxially arranged on the cutter head, a positioning needle point is coaxially arranged at the end part of the positioning needle, and the positioning needle point extends to the outer side of the cutter head. Two first discharging grooves are formed in the outer wall of the tool bit in a central symmetry mode, first mounting grooves are formed in the ends of the first discharging grooves, the bottom cleaning diamond cutters are fixedly arranged in the first mounting grooves, one ends of the bottom cleaning diamond cutters make contact with the positioning needles, and the other ends of the bottom cleaning diamond cutters extend to the outer side of the outer wall of the tool bit. And an end part cutting edge on the bottom cleaning diamond cutter is arranged between the end part of the positioning needle point and the end part of the cutter head. The positioning needle is detachably arranged on the tool bit, after the positioning needle point of the positioning needle is abraded, the positioning needle can be directly replaced, and the tool body, the tool bit and the like can be repeatedly used, so that accurate positioning can be realized, and the replacement cost of the drill bit can be effectively saved.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a diamond drill bit with positioning function. Background Art

[0002] In the production process of parts, most parts need to be drilled. In order to drill accurately, it is generally necessary to set a positioning cone on the axis of the drill bit to ensure the accuracy of the processing position. In the prior art, the positioning cone is directly fixed on the drill bit. During the processing, the positioning cone first contacts the parts. During the long-term processing, the positioning cone first cannot be accurately positioned due to wear. In order to achieve accurate positioning, the drill bit must be replaced. Frequent replacement of the drill bit increases the production cost. Utility Model Content

[0003] The utility model aims to overcome the deficiencies of the prior art and provide a diamond drill bit with positioning function.

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

[0005] A diamond drill bit with positioning, comprising a cutter body, a cutter head, a positioning needle and a bottom-clearing diamond cutter, wherein the cutter head is coaxially fixedly arranged on one end of the cutter body, a mounting hole for mounting the positioning needle is coaxially arranged on the cutter head, a positioning needle tip is coaxially arranged on the end of the positioning needle, the positioning needle tip extends to the outside of the cutter head, two first material discharge grooves are centrally symmetrically arranged on the outer wall of the cutter head, the first material discharge grooves are inclinedly arranged, a first mounting groove is arranged on the end of the first material discharge groove, the bottom-clearing diamond cutter is fixedly arranged in the first mounting groove and cooperates with the first mounting groove, one end of the bottom-clearing diamond cutter contacts with the positioning needle, the other end of the bottom-clearing diamond cutter extends to the outside of the outer wall of the cutter head, and the end cutting edge on the bottom-clearing diamond cutter is arranged between the end of the positioning needle tip and the end of the cutter head.

[0006] Furthermore, two second discharge grooves are centrally symmetrically arranged on the outer wall of the cutter head, a second mounting groove is arranged on the side wall of the second discharge groove, a scribing diamond knife is fixedly arranged in the second mounting groove, two ends of the scribing diamond knife respectively cooperate with two ends of the cutter head, and the side cutting edge on the scribing diamond knife extends to the outside of the side wall of the cutter head.

[0007] Furthermore, the second discharge chute is obliquely arranged between the two first mounting chute, and the inclination direction of the second discharge chute is opposite to the inclination direction of the first discharge chute.

[0008] Furthermore, the scribing diamond knife is arranged in parallel with the second discharge chute.

[0009] Furthermore, two mutually parallel avoidance grooves are arranged on the end of the cutter head, and two ends of the avoidance grooves are respectively connected to the first mounting groove and the second mounting groove.

[0010] Furthermore, the end cutting edges on the two bottom-clearing diamond knives on the cutter head are arranged parallel to each other, and the axis of the positioning needle is perpendicular to the plane where the two end cutting edges are located.

[0011] Furthermore, the positioning needle tip is a regular polygonal cone.

[0012] Furthermore, the knife body is provided with a fastening hole matched with the positioning pin, the side wall of the fastening hole is provided with a penetrating threaded hole, and the threaded hole is provided with a screw for fixing the positioning pin.

[0013] Furthermore, positioning planes cooperating with the end of the bottom cleaning diamond knife are arranged on both side surfaces of the positioning pin.

[0014] Furthermore, the diameter of the side cutting edge is not less than the diameter of the end of the bottom cleaning diamond knife.

[0015] The beneficial effects of the utility model are:

[0016] 1) In this technology, the positioning pin is detachably arranged on the cutter head. When the positioning pin tip is worn, the positioning pin can be directly replaced, and the cutter body and cutter head can be reused. This not only enables accurate positioning, but also effectively saves the cost of drill bit replacement.

[0017] 2) In this technology, a bottom-clearing diamond knife can be used to process the bottom of the hole, and a scribing diamond knife can be used to process the inner wall of the hole, so that the processed hole will be smoother.

[0018] 3) In the present technology, the first discharge trough is provided to discharge the debris generated by the bottom cleaning diamond knife processing, and the second discharge trough is provided to discharge the debris generated by the scribing diamond knife processing, so that the debris can be fully discharged. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 The three-dimensional structure of this drill bit Figure 1 ;

[0020] Figure 2 The three-dimensional structure of this drill bit Figure 2 ;

[0021] Figure 3 This is a side view of the drill bit;

[0022] In the figure, 1-blade body, 2-blade head, 3-positioning needle, 4-bottom cleaning diamond knife, 5-positioning needle tip, 6-mounting hole, 7-first discharge groove, 8-first mounting groove, 9-end cutting edge, 10-second discharge groove, 11-second mounting groove, 12-marking diamond knife, 13-side cutting edge, 14-avoidance groove, 15-threaded hole, 16-positioning plane. DETAILED DESCRIPTION

[0023] The following will be combined with the embodiments to clearly and completely describe the technical solution of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1-Figure 3 , the utility model provides a technical solution:

[0025] A diamond drill bit with positioning includes a cutter body 1, a cutter head 2, a positioning needle 3 and a bottom-clearing diamond cutter 4. The cutter head 2 is coaxially fixedly arranged on one end of the cutter body 1. A mounting hole 6 for mounting the positioning needle 3 is coaxially arranged on the cutter head 2. A positioning needle tip 5 is coaxially arranged on the end of the positioning needle 3. The positioning needle tip 5 extends to the outside of the cutter head 2. Two first material row grooves 7 are centrally symmetrically arranged on the outer wall of the cutter head 2. The first material row grooves 7 are inclinedly arranged. A first mounting groove 8 is arranged on the end of the first material row groove 7. The bottom-clearing diamond cutter 4 is fixedly arranged in the first mounting groove 8 and cooperates with the first mounting groove 8. One end of the bottom-clearing diamond cutter 4 contacts the positioning needle 3. The other end of the bottom-clearing diamond cutter 4 extends to the outside of the outer wall of the cutter head 2. The end cutting edge 9 on the bottom-clearing diamond cutter 4 is arranged between the end of the positioning needle tip 5 and the end of the cutter head 2. The positioning needle tip 5 is a regular polygonal cone. The cutter head 2 is fixed to the drill bit using device through the cutter body 1, the positioning needle tip 5 on the positioning needle 3 can be accurately positioned, the bottom cleaning diamond cutter 4 can process the bottom of the hole, and the two bottom cleaning diamond cutters 4 are arranged symmetrically to the center, so that the drill bit is evenly stressed during the drilling process, and the drill bit is prevented from being damaged due to uneven handling. The two first discharge grooves 7 are used to discharge the debris generated by the two bottom cleaning diamond cutters 4. The first discharge groove 7 is used to install and fix the bottom cleaning diamond cutters 4. Generally, the bottom cleaning diamond cutters 4 are welded in the first discharge groove 7.

[0026] In some embodiments, two second material discharging grooves 10 are centrally symmetrically arranged on the outer wall of the cutter head 2, and a second mounting groove 11 is arranged on the side wall of the second material discharging groove 10. A scribing diamond knife 12 is fixedly arranged in the second mounting groove 11, and the two ends of the scribing diamond knife 12 are respectively matched with the two ends of the cutter head 2, and the side cutting edge 13 on the scribing diamond knife 12 extends to the outside of the side wall of the cutter head 2. The second material discharging groove 10 is obliquely arranged between the two first mounting grooves 8, and the inclination direction of the second material discharging groove 10 is opposite to the inclination direction of the first material discharging groove 7. The scribing diamond knife 12 is arranged parallel to the second material discharging groove 10. The diameter of the side cutting edge 13 is not less than the diameter of the end of the bottom cleaning diamond knife 4. Among them, two second material discharging grooves 10 are arranged to install two scribing diamond knives 12, and the two scribing diamond knives 12 are centrally symmetrically arranged, so that the drill bit is subjected to uniform force during drilling, and the drill bit is prevented from being damaged due to unevenness in the hands. The scribing diamond knife 12 mainly grinds the inner wall of the hole flat, so the end of the bottom cleaning diamond knife 4 cannot extend to the outside of the side cutting edge 13. The scribing diamond knife 12 is fixed in the second mounting groove 11 by welding.

[0027] In some embodiments, two parallel escape grooves 14 are provided on the end of the cutter head 2, and the two ends of the escape groove 14 are respectively connected to the first mounting groove 8 and the second mounting groove 11. The escape groove 14 is provided so that the debris generated by the scribing diamond tool 12 enters the first discharge groove 7 through the escape groove 14, and then the debris is discharged through the first discharge groove 7.

[0028] In some embodiments, the end cutting edges 9 on the two bottom-clearing diamond knives 4 on the cutter head 2 are arranged parallel to each other, and the axis of the positioning needle 3 is perpendicular to the plane where the two end cutting edges 9 are located. When the two end cutting edges 9 are arranged parallel to each other, the bottom of the processed hole is a plane; the two end cutting edges 9 can also be arranged in a V shape, so that the bottom of the processed hole is a conical surface.

[0029] In some embodiments, the blade body 1 is provided with a fastening hole that cooperates with the positioning pin 3, and the side wall of the fastening hole is provided with a threaded hole 15 that penetrates therethrough, and a screw for fixing the positioning pin 3 is provided in the threaded hole 15. The threaded hole 15 is provided to facilitate fixing the positioning pin 3 in the fastening hole by means of a screw, and the distance between the positioning pin tip 5 and the end face of the blade head 2 can also be adjusted as required. At the same time, the positioning pin 3 can be removed after being worn, and then reinstalled and used after being repaired. When the positioning pin 3 is fastened, the end of the screw presses against the side of the positioning pin 3.

[0030] In some embodiments, positioning planes 16 are provided on both sides of the positioning pin 3 to match the end of the bottom-clearing diamond knife 4. The positioning planes 16 can make the end of the bottom-clearing diamond knife 4 close to the axis of the positioning pin 3. When processing the bottom of the hole, the bottom-clearing diamond knife 4 can process a larger bottom area, and the area processed by the positioning pin 3 is smaller, which can reduce the wear of the positioning pin 3 and extend the service life of the positioning pin 3.

[0031] In the description of the present invention, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "the other end", "upper", "one side", "inside", "front", "center", "both ends" 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.

[0032] In the present utility model, unless otherwise clearly stipulated and limited, the terms such as "installation", "setting", "connection", "fixation", "hinge" and the like should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; 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, ordinary technicians in this field can understand the specific meanings of the above terms in the utility model according to the specific circumstances.

[0033] The above is only a preferred embodiment of the utility model. It should be understood that the utility model is not limited to the form disclosed herein, and should not be regarded as excluding other embodiments, but can be used in various other combinations, modifications and environments, and can be modified within the scope of the concept described herein through the above teachings or the technology or knowledge of the relevant field. The changes and modifications made by those skilled in the art do not deviate from the spirit and scope of the utility model, and should be within the scope of protection of the claims attached to the utility model.

Claims

1. A diamond drill bit with positioning, characterized in that: The present invention comprises a knife body (1), a knife head (2), a positioning needle (3) and a bottom-cleaning diamond knife (4), wherein the knife head (2) is coaxially fixedly arranged on one end of the knife body (1), a mounting hole (6) for mounting the positioning needle (3) is coaxially arranged on the knife head (2), a positioning needle tip (5) is coaxially arranged on the end of the positioning needle (3), and the positioning needle tip (5) extends to the outside of the knife head (2), and two first discharge grooves (7) are centrally symmetrically arranged on the outer wall of the knife head (2), and the first discharge grooves (7) are inclined. The first discharge groove (7) is obliquely arranged, and a first mounting groove (8) is arranged at the end of the first discharge groove (7). The bottom cleaning diamond knife (4) is fixedly arranged in the first mounting groove (8) and cooperates with the first mounting groove (8). One end of the bottom cleaning diamond knife (4) contacts the positioning needle (3), and the other end of the bottom cleaning diamond knife (4) extends to the outside of the outer wall of the knife head (2). The end cutting edge (9) on the bottom cleaning diamond knife (4) is arranged between the end of the positioning needle tip (5) and the end of the knife head (2).

2. A positioning diamond drill bit according to claim 1, characterized in that: Two second material discharging grooves (10) are centrally symmetrically arranged on the outer wall of the cutter head (2); a second mounting groove (11) is arranged on the side wall of the second material discharging groove (10); a scribing diamond knife (12) is fixedly arranged in the second mounting groove (11); two ends of the scribing diamond knife (12) respectively cooperate with two ends of the cutter head (2); and a side cutting edge (13) on the scribing diamond knife (12) extends to the outside of the side wall of the cutter head (2).

3. A positioning diamond drill bit according to claim 2, characterized in that: The second discharge groove (10) is arranged obliquely between the two first mounting grooves (8), and the inclination direction of the second discharge groove (10) is opposite to the inclination direction of the first discharge groove (7).

4. A positioning diamond drill bit according to claim 2 or 3, characterized in that: The scribing diamond knife (12) is arranged parallel to the second discharge trough (10).

5. A positioning diamond drill bit according to claim 2 or 3, characterized in that: Two mutually parallel avoidance grooves (14) are provided on the end of the cutter head (2), and the two ends of the avoidance groove (14) are respectively connected to the first installation groove (8) and the second installation groove (11).

6. A positioning diamond drill bit according to any one of claims 1 to 3, characterized in that: The end cutting edges (9) on the two bottom-cleaning diamond knives (4) on the cutter head (2) are arranged parallel to each other, and the axis of the positioning needle (3) is perpendicular to the plane where the two end cutting edges (9) are located.

7. A positioning diamond drill bit according to any one of claims 1 to 3, characterized in that: The positioning needle tip (5) is a regular polygonal cone.

8. A positioning diamond drill bit according to any one of claims 1 to 3, characterized in that: The knife body (1) is provided with a fastening hole cooperating with the positioning pin (3), a through threaded hole (15) is provided on the side wall of the fastening hole, and a screw for fixing the positioning pin (3) is provided in the threaded hole (15).

9. A positioning diamond drill bit according to any one of claims 1 to 3, characterized in that: Positioning planes (16) that match the end of the bottom-cleaning diamond knife (4) are provided on both side surfaces of the positioning needle (3).

10. A positioning diamond drill bit according to claim 2 or 3, characterized in that: The diameter of the side cutting edge (13) is not less than the diameter of the end of the bottom cleaning diamond knife (4).

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