A hard metal drill bit

Abstract

The utility model belongs to hard alloy drill bit technical field, concretely relates to a kind of hard alloy drill bit, including drill bit main body, the outside of drill bit main body is fixedly connected with connecting sleeve, the upper end of connecting sleeve is contacted with mounting piece, the lower end of mounting piece is fixedly connected with fixed sleeve, the fixed sleeve is contacted with connecting sleeve, the inside of fixed sleeve is equipped with the clamping groove, the inside of connecting sleeve is provided with dismounting mechanism, the inside of drill bit main body is provided with heat dissipation mechanism. The utility model is by designing groove body, lid, screw rod, rotating block, annular sleeve and rotating sleeve etc. component, cooling liquid is poured into groove body, then lid is installed into groove body, sealing sleeve is contacted to drill bit main body by moving downward, to make the cooling liquid in groove body sealed, to make cooling liquid can be cooled and heat dissipated to drill bit main body, so that device is convenient to use.

Description

Technical Field

[0001] This utility model relates to the field of cemented carbide drill bit technology, specifically a cemented carbide drill bit. Background Technology

[0002] Carbide drill bits are used for precise drilling into various hard materials. They are typically made of a special alloy called tungsten-cobalt carbide, which has extremely high hardness and wear resistance. For example, utility model patent CN211516185U discloses a carbide drill bit, including a shank and a cutting part. The cutting part includes: two chisel edges near the central axis of the drill bit, two end edges, two secondary cutting edges, two flank faces, and two helical chip removal grooves. The end edges include a main cutting edge connected to the corresponding chisel edges and used for line contact with the workpiece to achieve chip cutting, and an elongated cutting surface connected to the main cutting edge. The elongated cutting surface is used for further surface contact with the workpiece to cut. The secondary cutting edges are connected to the main cutting edges. The flank faces are located on the outer periphery of the end edges and adjacent to the secondary cutting edges. The helical chip removal grooves are located between the two flank faces. By setting the elongated cutting surface, the thickness of the chips during machining is increased, and the chips are more likely to break after curling during drilling, thereby reducing the frequency of drill bit replacement and reducing production costs. However, in existing technologies, the lack of a cooling mechanism makes it difficult to cool and dissipate heat from the drill bit body, resulting in inconvenience in use. Furthermore, when the drill bit body needs to be replaced, external tools are required for disassembly, making it inconvenient to remove and replace. Therefore, improvements are needed. Utility Model Content

[0003] The purpose of this utility model is to provide a carbide drill bit that solves the problems of the drill bit body being inconvenient to cool and dissipate heat when the device does not have a cooling mechanism, making the device inconvenient to use, and the need to disassemble the drill bit body with external tools when it needs to be replaced, making the drill bit body inconvenient to disassemble and replace.

[0004] To achieve the above objectives, this utility model provides the following technical solution: a carbide drill bit, comprising a drill bit body, a connecting sleeve fixedly connected to the outer side of the drill bit body, an mounting component contacting the upper end of the connecting sleeve, a fixing sleeve fixedly connected to the lower end of the mounting component, the fixing sleeve contacting the connecting sleeve, a slot being provided inside the fixing sleeve, a disassembly mechanism being provided inside the connecting sleeve, and a heat dissipation mechanism being provided inside the drill bit body.

[0005] Preferably, the disassembly mechanism includes a slider, which is slidably connected inside the slot. A support plate is fixedly connected to the end of the slider away from the slot. A pull rod is fixedly connected to the side of the support plate away from the slider. A handle is fixedly connected to the end of the pull rod away from the support plate. A pull rod is slidably connected inside the connecting sleeve. A spring is provided on the outside of the pull rod. A guide groove is provided inside the connecting sleeve. The slider is slidably connected to the connecting sleeve. By pulling the slider, it moves out of the slot and then moves downwards, separating the drill bit body and other components from the mounting piece, making it easy to disassemble and replace the drill bit body.

[0006] Preferably, one end of the spring is fixedly connected to the support plate, and the other end of the spring is fixedly connected to the connecting sleeve. By designing the spring, the support plate has an elastic force.

[0007] Preferably, a guide block is slidably connected inside the guide groove, and the guide block is fixedly connected to the support plate. By designing the guide block, the support plate can be guided.

[0008] Preferably, the heat dissipation mechanism includes a groove, with the groove inside the drill bit body. A cover is threadedly connected to the inside of the groove, and the cover contacts the drill bit body. A screw is threadedly connected to the inside of the cover, and a rotating block is fixedly connected to the upper end of the screw. An annular sleeve is rotatably connected to the outer side of the screw, and a rotating sleeve is rotatably connected to the inside of the annular sleeve. The rotating sleeve is fixedly connected to the screw and contacts the cover. A sliding block is fixedly connected to the upper end of the annular sleeve, and the sliding block is slidably connected to the cover. A sealing sleeve is fixedly connected to the lower end of the annular sleeve, and the sealing sleeve contacts the cover and the drill bit body. By pouring coolant into the groove, installing the cover into the groove, and moving the sealing sleeve downwards to contact the drill bit body, the coolant in the groove is sealed, allowing the coolant to cool and dissipate heat from the drill bit body, making the device easy to use.

[0009] Preferably, a limiting block is slidably connected inside the rotating sleeve, and the limiting block is fixedly connected to the cover. By designing the limiting block, the rotating sleeve can be limited.

[0010] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model designs components such as a tank, a cover, a screw, a rotating block, an annular sleeve, and a rotating sleeve to pour coolant into the tank, then install the cover into the tank, and move the sealing sleeve downwards to contact the drill bit body, thereby sealing the coolant in the tank and allowing the coolant to cool and dissipate heat for the drill bit body, making the device easy to use.

[0012] 2. This utility model designs components such as slider, support plate, pull rod, handle, spring and guide groove. Pulling the slider moves it out of the slot and then moves it downwards, separating the drill bit body and other components from the mounting parts, making the drill bit body easy to disassemble and replace. Attached Figure Description

[0013] Figure 1 This is a perspective view of the overall structure of this utility model;

[0014] Figure 2 This utility model Figure 1 Partial sectional perspective view of the structure;

[0015] Figure 3 This utility model Figure 1 A front sectional view;

[0016] Figure 4 This utility model Figure 2 Enlarged view of point A;

[0017] Figure 5 This utility model Figure 3 Enlarged view of the cover.

[0018] In the diagram: 1. Drill bit body; 2. Connecting sleeve; 3. Mounting component; 4. Fixing sleeve; 5. Slot; 6. Disassembly mechanism; 61. Slider; 62. Support plate; 63. Pull rod; 64. Handle; 65. Spring; 66. Guide groove; 67. Guide block; 7. Heat dissipation mechanism; 71. Groove; 72. Cover; 73. Screw; 74. Rotating block; 75. Annular sleeve; 76. Rotating sleeve; 77. Limiting block; 78. Sliding block; 79. Sealing sleeve. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] Please see Figures 1-5 A cemented carbide drill bit includes a drill bit body 1, a connecting sleeve 2 fixedly connected to the outer side of the drill bit body 1, an mounting part 3 in contact with the upper end of the connecting sleeve 2, a fixing sleeve 4 fixedly connected to the lower end of the mounting part 3, the fixing sleeve 4 in contact with the connecting sleeve 2, a slot 5 is provided inside the fixing sleeve 4, a disassembly mechanism 6 is provided inside the connecting sleeve 2, and a heat dissipation mechanism 7 is provided inside the drill bit body 1.

[0021] Please see Figure 4The disassembly mechanism 6 includes a slider 61, which is slidably connected inside the slot 5. A support plate 62 is fixedly connected to the end of the slider 61 away from the slot 5. A pull rod 63 is fixedly connected to the side of the support plate 62 away from the slider 61. A handle 64 is fixedly connected to the end of the pull rod 63 away from the support plate 62. A pull rod 63 is slidably connected inside the connecting sleeve 2. A spring 65 is provided on the outside of the pull rod 63. One end of the spring 65 is fixedly connected to the support plate 62, and the other end of the spring 65 is fixedly connected to the connecting sleeve 2. By designing the spring 65, the support plate 62 has an elastic force. A guide groove 66 is opened inside the connecting sleeve 2. A guide block 67 is slidably connected inside the guide groove 66. The guide block 67 is fixedly connected to the support plate 62. By designing the guide block 67, the support plate 62 can be guided. The slider 61 is slidably connected to the connecting sleeve 2. By pulling the slider 61, the slider 61 moves out of the slot 5 and then moves downward, separating the drill bit body 1 and other components from the mounting part 3, making it easy to disassemble and replace the drill bit body 1.

[0022] Please see Figure 2 , Figure 3 , Figure 5 The heat dissipation mechanism 7 includes a groove 71. The groove 71 is formed inside the drill bit body 1. A cover 72 is threadedly connected inside the groove 71, and the cover 72 contacts the drill bit body 1. A screw 73 is threadedly connected inside the cover 72. A rotating block 74 is fixedly connected to the upper end of the screw 73. An annular sleeve 75 is rotatably connected to the outer side of the screw 73. A rotating sleeve 76 is rotatably connected inside the annular sleeve 75. The rotating sleeve 76 is fixedly connected to the screw 73. A limiting block 77 is slidably connected inside the rotating sleeve 76. The limiting block 77 is fixedly connected to the cover 72. By designing the limiting block 77, the rotation... The sleeve 76 is intended to be used for sealing. The annular sleeve 75 contacts the cover 72. The upper end of the annular sleeve 75 is fixedly connected to the sliding block 78, which is slidably connected to the cover 72. The lower end of the annular sleeve 75 is fixedly connected to the sealing sleeve 79, which contacts the cover 72 and the drill bit body 1. By pouring coolant into the tank 71 and then installing the cover 72 into the tank 71, the sealing sleeve 79 is moved downwards to contact the drill bit body 1, thereby sealing the coolant in the tank 71. This allows the coolant to cool and dissipate heat from the drill bit body 1, making the device easy to use.

[0023] The specific implementation process of this utility model is as follows: Before using the device, coolant is poured into the tank 71, and then the cover 72 is installed in the tank 71. Rotating the rotating block 74 causes the screw 73 to rotate. The rotation of the screw 73 causes the screw to move in a threaded motion with the cover 72, thereby causing the screw 73 to have a relative displacement. The rotation of the screw 73 causes the rotating sleeve 76 and the annular sleeve 75 to move downward. The downward movement of the annular sleeve 75 causes the sliding block 78 and the sealing sleeve 79 to move downward. The downward movement of the sealing sleeve 79 contacts the drill bit body 1, thereby sealing the coolant in the tank 71, so that the coolant can cool and dissipate heat for the drill bit body 1, making the device easy to use.

[0024] When the drill bit body 1 needs to be replaced, pull the handle 64 to move away from the connecting sleeve 2. The movement of the handle 64 causes the pull rod 63 to move, which in turn causes the support plate 62 to move. The movement of the support plate 62 causes the guide block 67 and the slider 61 to move. The movement of the support plate 62 compresses the spring 65, and the slider 61 moves out of the slot 5. Then, it moves downward and the drill bit body 1 and the connecting sleeve 2 and other components separate from the mounting parts 3, making it easy to disassemble and replace the drill bit body 1.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A cemented carbide drill bit, comprising a drill bit body (1), characterized in that: A connecting sleeve (2) is fixedly connected to the outside of the drill bit body (1). The upper end of the connecting sleeve (2) contacts an installation part (3). The lower end of the installation part (3) is fixedly connected to a fixing sleeve (4). The fixing sleeve (4) contacts the connecting sleeve (2). A slot (5) is opened inside the fixing sleeve (4). A disassembly mechanism (6) is provided inside the connecting sleeve (2). A heat dissipation mechanism (7) is provided inside the drill bit body (1).

2. A carbide drill bit according to claim 1, characterized in that: The disassembly mechanism (6) includes a slider (61), which is slidably connected inside the slot (5). A support plate (62) is fixedly connected to one end of the slider (61) away from the slot (5). A pull rod (63) is fixedly connected to one side of the support plate (62) away from the slider (61). A handle (64) is fixedly connected to one end of the pull rod (63) away from the support plate (62). A pull rod (63) is slidably connected inside the connecting sleeve (2). A spring (65) is provided on the outside of the pull rod (63). A guide groove (66) is opened inside the connecting sleeve (2). The slider (61) is slidably connected to the connecting sleeve (2).

3. A carbide drill bit according to claim 2, characterized in that: One end of the spring (65) is fixedly connected to the support plate (62), and the other end of the spring (65) is fixedly connected to the sleeve (2).

4. A carbide drill bit according to claim 2, characterized in that: The guide groove (66) is slidably connected to a guide block (67), and the guide block (67) is fixedly connected to the support plate (62).

5. A carbide drill bit according to claim 1, characterized in that: The heat dissipation mechanism (7) includes a groove (71). The groove (71) is provided inside the drill bit body (1). A cover (72) is threadedly connected to the inside of the groove (71). The cover (72) is in contact with the drill bit body (1). A screw (73) is threadedly connected to the inside of the cover (72). A rotating block (74) is fixedly connected to the upper end of the screw (73). An annular sleeve (75) is rotatably connected to the outer side of the screw (73). The internal rotating connection is a rotating sleeve (76), which is fixedly connected to the screw (73). The annular sleeve (75) is in contact with the cover (72). The upper end of the annular sleeve (75) is fixedly connected to a sliding block (78), which is slidably connected to the cover (72). The lower end of the annular sleeve (75) is fixedly connected to a sealing sleeve (79), which is in contact with the cover (72) and the drill bit body (1).

6. A carbide drill bit according to claim 5, characterized in that: The rotating sleeve (76) has a sliding connection to a limiting block (77), which is fixedly connected to the cover (72).

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