Composite alloy drill bit

Abstract

The utility model discloses a composite alloy drill bit which comprises a drilling mechanism and a connecting mechanism, the drilling mechanism comprises a drill body, the lower end of the drill body is fixedly connected with a cutting head, the surface of the cutting head is provided with a cutting edge, the surface of the drill body is provided with a first chip groove, and the surface of the drill body is provided with a second chip groove. The first chip groove and the second chip groove are both in a threaded shape. Due to the arrangement of the drilling mechanism, in the rotating process of the drill bit, the size of the first chip discharging groove is large, the size of the second chip discharging groove is small, the first chip discharging groove with the large size is mainly responsible for rapidly discharging most large-particle chips, and the second chip discharging groove with the small size is mainly responsible for rapidly discharging the large-particle chips. And the second chip removal groove with the smaller size can assist in discharging some tiny chips, the chip removal efficiency is improved through mutual cooperation of the first chip removal groove and the second chip removal groove, the cutting edge covers the surface position of the cutting head, and materials can be saved while cutting is not affected.

Description

TECHNICAL FIELD

[0001] The utility model relates to composite alloy drill bit technical field, concretely is a kind of composite alloy drill bit. BACKGROUND

[0002] Composite alloy drill bit is a kind of high-performance drill bit combined by multiple alloy materials, usually composed of cemented carbide, high-speed steel and other special alloy materials, cemented carbide has extremely high hardness and wear resistance, can effectively cut hard material;High-speed steel has good toughness and machinability, can ensure the strength and stability of the whole drill bit, other special alloy materials may give the drill bit specific properties, such as corrosion resistance, high temperature resistance, etc., can maintain sharp cutting edge in long-term use process, greatly improve drilling efficiency, reduce the frequency of replacing drill bit.

[0003] When drilling some hard material, composite alloy drill bit is generally used for drilling processing, and most of the current drill bits use a chip removal groove, so that the chip removal function is general, and the whole drill bit is made of alloy material, which consumes more materials and has poor practicability;Therefore, in order to solve the above problems, a composite alloy drill bit is provided. INVENTION CONTENTS

[0004] The utility model mainly solves the technical problem of the prior art, and provides a composite alloy drill bit.

[0005] To achieve the above object, the utility model provides the following technical scheme: a composite alloy drill bit, comprising a drilling mechanism and a connecting mechanism, the drilling mechanism comprises a drill body, the lower end of the drill body is fixedly connected with a cutting head, the surface of the cutting head is provided with a cutting edge, the surface of the drill body is provided with a first chip removal groove, the surface of the drill body is provided with a second chip removal groove, the first chip removal groove and the second chip removal groove are both in screw thread shape, the size of the first chip removal groove is larger than that of the second chip removal groove, and the connecting mechanism is arranged at the upper end of the drill body.

[0006] Preferably, the second chip removal groove is arranged on one side of the first chip removal groove, the material of the cutting edge is cemented carbide, the cutting edge is a plane edge, and the shape and angle of the cutting edge are carefully designed.

[0007] Preferably, the connecting mechanism comprises a clamping block, the outer portion of the clamping block is provided with a connecting block, the upper end of the connecting block is fixedly connected with a drill handle, the inner portion of the connecting block is provided with a clamping groove, the surface of the clamping block is provided with a first connecting hole, the inner portion of the connecting block is provided with a second connecting hole, and the inner portion of the first connecting hole and the second connecting hole is provided with a screw.

[0008] Preferably, the clamping block is in sliding connection with the clamping groove, and the screw is in threaded connection with the first connecting hole and the second connecting hole, after the clamping block is slid into the clamping groove, the first connecting hole is aligned with the second connecting hole, so that the screw can be screwed into the first connecting hole through the second connecting hole.

[0009] Preferably, the clamping block is fixedly connected to the upper end of the drill body, and the second connecting hole is communicated with the clamping groove, through the fixed connection of the clamping block and the drill body, after the screw is screwed into the first connecting hole and the second connecting hole, the drill body is connected with the drill handle.

[0010] Preferably, the screw is externally sleeved with a gasket, and the surface of the connecting block is provided with a planar groove, the gasket is arranged outside the shank of the screw and in contact with the screw driving end, so as to play a buffering role, absorb part of the energy and reduce damage to the connecting part.

[0011] Compared with the prior art, the drill body has the beneficial effects as follows:

[0012] 1、The drill body is provided with two thread-shaped chip removal grooves, the first chip removal groove has a larger size, the second chip removal groove is arranged on one side of the first chip removal groove and has a smaller size, the first chip removal groove with a larger size is mainly responsible for quickly removing most of the larger particles, and the second chip removal groove with a smaller size can assist in removing some fine chips, the two chip removal grooves are matched with each other, the chip removal efficiency is improved, the cutting edge is covered on the surface position of the cutting head, the cutting is not affected, and materials can be saved. DETAILED DESCRIPTION

[0013] The accompanying drawings are used to provide a further understanding of the drill body, constitute a part of the specification, are used together with the embodiments of the drill body to explain the drill body, and do not constitute a limitation on the drill body. In the drawings:

[0014] Fig. 1 It is a structure schematic view of the drill body in an overall front view.

[0015] Fig. 2 It is a structure schematic view of the drill body in an overall side view.

[0016] Fig. 3 It is a structure schematic view of the drill body in an overall front view.

[0017] In the drawings: 1, drill body; 2, cutting head; 3, cutting edge; 4, first chip removal groove; 5, second chip removal groove; 6, clamping block; 7, connecting block; 8, drill handle; 9, clamping groove; 10, first connecting hole; 11, second connecting hole; 12, screw; 13, gasket; 14, planar groove. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0019] See also Figs. 1-3 A composite alloy drill bit includes a drilling mechanism and a connecting mechanism. The drilling mechanism includes a drill body 1. A cutting head 2 is fixedly connected to the lower end of the drill body 1. A cutting edge 3 is provided on the surface of the cutting head 2. A first chip groove 4 is provided on the surface of the drill body 1. A second chip groove 5 is provided on the surface of the drill body 1. The first chip groove 4 and the second chip groove 5 are both threaded. The second chip groove 5 is provided on one side of the first chip groove 4. The material of the cutting edge 3 is cemented carbide. The cutting edge 3 on the surface of the cutting head 2 of the drill bit begins to contact the hard material. Since the cutting edge 3 is made of cemented carbide, it has extremely high hardness and wear resistance and can effectively cut the material. As the drill bit is rotated During the rotation, the cutting edge 3 continuously cuts the material into chips. The first chip groove 4 and the second chip groove 5 on the surface of the drill body 1 play a chip removal role. The first chip groove 4 is larger in size, and the second chip groove 5 is arranged on one side of the first chip groove 4 and is smaller in size. The two threaded chip grooves can transport the chips generated by cutting upward like a screw conveyor during the rotation of the drill bit. The larger first chip groove 4 is mainly responsible for quickly discharging most of the larger particles of chips, while the smaller second chip groove 5 can assist in discharging some small chips. The two cooperate with each other to improve the chip removal efficiency and avoid the accumulation of chips that affect the drilling progress and the service life of the drill bit.

[0020] In one aspect of this embodiment, in the connecting mechanism, the clamping block 6 is fixedly connected to the upper end of the drill body 1. When the drill body 1 needs to be connected to the drill shank 8, the clamping block 6 is slid into the clamping slot 9 inside the connecting block 7. Since the clamping block 6 is slidably connected to the clamping slot 9, the accuracy and stability of the connection can be ensured during the process of the clamping block 6 sliding into the clamping slot 9. When the clamping block 6 is completely slid into the clamping slot 9, the first connecting hole 10 opened through the surface of the clamping block 6 will be aligned with the second connecting hole 11 opened inside the connecting block 7. At this time, the screw 12 is passed through the second connecting hole 11 and screwed into the first connecting hole 10. Since the screw 12 is threadedly connected to the first connecting hole 10 and the second connecting hole 11, by tightening the screw 12, the clamping block 6 and the connecting block 7 are firmly connected together, thereby realizing the connection between the drill body 1 and the drill shank 8, ensuring that the power of the drilling rig can be effectively transmitted to the cutting edge 3.

[0021] In one aspect of the embodiment, the gasket 13 is sleeved on the outside of the screw 12, and the gasket 13 is in contact with the screwing end of the screw 12 when the screw 12 is tightened, thereby playing a buffering role. During the drilling process, the vibration and impact force generated by the drilling machine is transmitted to the connecting position through the drill handle 8, the gasket 13 can absorb part of the energy and reduce the damage to the connecting position, thereby prolonging the service life of the connecting mechanism. Meanwhile, the flat groove 14 formed on the surface of the connecting block 7 can provide an operating space for the installation and removal of the screw 12, thereby facilitating the tightening and loosening of the screw 12 by using a tool.

[0022] The working principle of the utility model is as follows: when the composite alloy drill bit is used, the clamping block 6 is slid into the clamping groove 9 in the connecting block 7. Since the clamping block 6 and the clamping groove 9 are in sliding connection, the accuracy and stability of the connection can be ensured during the process of sliding the clamping block 6 into the clamping groove 9. When the clamping block 6 is completely slid into the clamping groove 9, the first connecting hole 10 formed through the surface of the clamping block 6 is aligned with the second connecting hole 11 formed in the connecting block 7. At this time, the screw 12 is screwed into the first connecting hole 10 through the second connecting hole 11. Since the screw 12 is in threaded connection with the first connecting hole 10 and the second connecting hole 11, the clamping block 6 and the connecting block 7 are firmly connected together by tightening the screw 12. In this way, the connection between the drill body 1 and the drill handle 8 is realized. Then, the drilling machine is connected with the drill handle 8. With the rotation of the drill bit, the cutting edge 3 continuously cuts the material into chips. Since the material of the cutting edge 3 is hard alloy, it has extremely high hardness and wear resistance, and can effectively cut the material. The first and second chip removal grooves 4 and 5 on the surface of the drill body 1 play a chip removal role. The first chip removal groove 4 has a larger size, and the second chip removal groove 5 is arranged on one side of the first chip removal groove 4 and has a smaller size. The two thread-shaped chip removal grooves can transport the chips generated during the cutting process upward like a screw conveyor during the rotation of the drill bit. The first chip removal groove 4 with a larger size is mainly responsible for quickly removing most of the large particles of chips, while the second chip removal groove 5 with a smaller size can assist in removing some fine chips. The two chip removal grooves cooperate with each other to remove the cutting chips. In the present scheme, all electrical equipment is powered by an external power supply.

[0023] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions recorded in the foregoing embodiments or make equivalent replacements to some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the utility model shall be included in the protection scope of the utility model.

Claims

1. A composite alloy drill bit comprising a drilling mechanism and a connecting mechanism, characterized in that: The drilling mechanism comprises a drill body (1), the lower end of the drill body (1) is fixedly connected with a cutting head (2), the surface of the cutting head (2) is provided with a cutting edge (3), the surface of the drill body (1) is provided with a first chip removal groove (4), the surface of the drill body (1) is provided with a second chip removal groove (5), and the first chip removal groove (4) and the second chip removal groove (5) are in a thread shape.

2. The composite alloy drill bit of claim 1, wherein: The second chip removal groove (5) is arranged on one side of the first chip removal groove (4), and the material of the cutting edge (3) is hard alloy.

3. The composite alloy drill bit of claim 1, wherein: The connecting mechanism comprises a clamping block (6), the outer portion of the clamping block (6) is provided with a connecting block (7), the upper end of the connecting block (7) is fixedly connected with a drill handle (8), the inner portion of the connecting block (7) is provided with a clamping groove (9), the surface of the clamping block (6) is provided with a first connecting hole (10), the inner portion of the connecting block (7) is provided with a second connecting hole (11), and the inner portion of the first connecting hole (10) and the second connecting hole (11) is provided with a screw (12).

4. The composite alloy drill bit according to claim 3, characterized in that: The clamping block (6) and the clamping groove (9) are in sliding connection, and the screw (12) is in threaded connection with the first connecting hole (10) and the second connecting hole (11).

5. The composite alloy drill bit of claim 3, wherein: The clamping block (6) is fixedly connected to the upper end of the drill body (1), and the second connecting hole (11) is communicated with the clamping groove (9).

6. The composite alloy drill bit of claim 3, wherein: The outer portion of the screw (12) is provided with a gasket (13), and the surface of the connecting block (7) is provided with a planar groove (14).

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