A threaded shank drill bit with anti-loosening structure

Abstract

The utility model belongs to the technical field of drill bits, and particularly relates to a threaded shank drill bit with an anti-loosening structure. Aiming at the problem that the existing drill bit and the tail handle are only connected by threads, so that when the drill bit rotates at high speed, the drill bit becomes loose due to the loose connection, thereby affecting the work efficiency, the following scheme is proposed, including a drill bit, the top of the drill bit is fixedly connected with a drill shank, the top of the drill shank is fixedly connected with a threaded block, the outer side of the threaded block is threadedly connected with a fixing rod, the two sides of the bottom end of the fixing rod are fixedly connected with a fixing block 1, and the bottom end of the fixing block 1 is fixedly connected with a support plate. The utility model rotates the fastening bolts on both sides of the fixing block 2, and the fastening bolts drive the clamping block to clamp the drill bit under the action of the sliding rod, thereby enhancing the tightness of the connection between the drill bit and the fixing rod, and avoiding the problem that when the drill bit and the tail handle are only connected by threads, the drill bit becomes loose due to the loose connection, thereby affecting the work efficiency.

Description

Technical Field

[0001] The utility model relates to a threaded shank drill bit, in particular to a threaded shank drill bit with an anti-loosening structure, and belongs to the technical field of drill bits. Background Art

[0002] The threaded shank drill bit can be used to drill holes in wood in the woodworking field and in the concrete field. The drill bit is mainly made of cemented carbide, which has the characteristics of high hardness and good wear resistance, which can improve the efficiency of drilling; the drill bit also has the characteristics of impact resistance and fatigue resistance, which can extend the service life of the drill bit.

[0003] In the prior art, there is a threaded extended drill bit disclosed in announcement number CN203843246U, which includes a drill bit and a tail handle, and the drill bit and the tail handle are connected by threads. The threaded extended drill bit consists of a drill bit and a tail handle, and the two parts are detachably connected by threads. For the thicker deep hole of the impeller, a two-time drilling method is adopted. First, a short drill bit is installed to drill a certain hole depth, and then an extended drill bit is installed to drill the locking pin hole to the designed depth, which solves the processing problem of the locking pin hole at the root of the turbine blade.

[0004] In the above technical solution, the drill bit and the tail handle are detachably connected by threads. For deep holes with thicker impellers, a two-step drilling process is adopted. First, a short drill bit is installed to drill a certain hole depth, and then an extended drill bit is installed to drill the locking pin hole to a designed depth. However, since the drill bit and the tail handle are only connected by threads, the drill bit becomes loose when the drill bit rotates at high speed due to an unfixed connection, thereby affecting work efficiency. In view of this, a threaded handle drill bit with an anti-loosening structure is provided to overcome the above defects. Utility Model Content

[0005] The utility model provides a threaded shank drill bit with an anti-loosening structure to solve the problem that the drill bit and the tail shank are only connected by threads, so that when the drill bit rotates at high speed, the connection is not fixed, resulting in the drill bit loosening and affecting the working efficiency.

[0006] The utility model achieves the above-mentioned purpose through the following technical solutions: a threaded shank drill bit with an anti-loosening structure, comprising a drill bit, a drill shank fixedly connected to the top of the drill bit, and a threaded block fixedly connected to the top of the drill shank;

[0007] The outer side of the threaded block is threadedly connected with a fixing rod, both sides of the bottom end of the fixing rod are fixedly connected with a fixing block 1, and the bottom end of the fixing block 1 is fixedly connected with a supporting plate;

[0008] The bottom end of the support plate is fixedly connected with a fixing block 2, one side of the fixing block 2 is threadedly connected with a fastening bolt, both sides of the fastening bolt are provided with sliding rods, the sliding rods pass through the interior of the fixing block 2, and one side of the fastening bolt is fixedly connected with a clamping block through a bearing.

[0009] As a further solution of the utility model: two clamping grooves are arranged on the outer surface of the drill handle, the slide bar is slidably connected to the second fixed block, and a rubber pad is fixedly connected inside the clamping block.

[0010] As a further solution of the utility model: an adjustment hole is opened on the outer surface of the fixing rod, an adjustment rod is arranged on the outer side of the fixing rod, and one side of the adjustment rod is threadedly connected with two fixing screws.

[0011] As a further solution of the utility model: a slide bar is fixedly connected to the outer wall of the fixed rod, a slide groove is provided inside the adjusting rod, and the slide bar matches the slide groove in size.

[0012] As a further solution of the utility model: the top end of the fixed rod is fixedly connected to two telescopic rods, the outer sides of the telescopic rods are provided with a return spring, and the return spring is fixedly connected to the adjusting rod.

[0013] As a further solution of the utility model: the top of the adjusting rod is fixedly connected with a connecting disk, the top of the connecting disk is provided with a liquid inlet, one side of the liquid inlet is fixedly connected with a cooling water tank, and the bottom end of the cooling water tank is connected with a cooling pipe.

[0014] As a further solution of the utility model: the cooling pipe runs through the inside of the adjusting rod, the inside of the connecting plate is fixed with a heat sink by bolts, and the inside of the drill bit is provided with a cooling hole.

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

[0016] 1. By rotating the fastening bolts on both sides of the second fixed block, the fastening bolts drive the clamping block to clamp the drill bit under the action of the sliding rod, thereby enhancing the tightness of the connection between the drill bit and the fixed rod, and avoiding the problem that the drill bit and the tail handle are only connected by threads, which makes the drill bit loose when rotating at high speed due to the loose connection, thereby affecting the work efficiency.

[0017] 2. By turning the fixing screw, the position of the fixing rod can be flexibly adjusted according to different milling requirements, and then the fixing screw is turned to connect with the adjustment hole, so as to complete the assembly between the fixing rod and the adjusting rod, which improves the work efficiency. When adjusting the distance between the fixing rod and the adjusting rod, the stability of the fixing rod and the adjusting rod is enhanced under the action of the sliding bar and the sliding groove.

[0018] 3. By applying a layer of thermal conductive silicone grease on the contact surface of the heat sink and the connection plate, the heat generated by the device can be more effectively transferred to the heat sink, and then dissipated into the surrounding air through the heat sink, thereby improving the heat dissipation efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the structure of the drill bit and the drill handle of the utility model;

[0021] Figure 3 This is a schematic diagram of the connection structure between the fixed rod and the adjusting rod of the utility model;

[0022] Figure 4 It is a schematic diagram of the internal structure of the device of the utility model.

[0023] In the figure: 1. drill bit; 2. drill handle; 3. fixing rod; 4. adjusting rod; 5. connecting plate; 6. fixing block 1; 7. supporting plate; 8. fixing block 2; 9. fastening bolt; 10. sliding rod; 11. clamping block; 12. adjusting hole; 13. fixing screw; 14. threaded block; 15. clamping groove; 16. cooling hole; 17. sliding bar; 18. sliding groove; 19. cooling pipe; 20. reset spring; 21. telescopic rod; 22. heat sink; 23. cooling water tank. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments 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 in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model. Embodiment 1

[0025] like Figures 1 to 4 As shown, a threaded shank drill bit with an anti-loosening structure comprises a drill bit 1, a drill shank 2 is fixedly connected to the top of the drill bit 1, and a threaded block 14 is fixedly connected to the top of the drill shank 2;

[0026] The outer side of the threaded block 14 is threadedly connected to the fixing rod 3, both sides of the bottom end of the fixing rod 3 are fixedly connected to the fixing block 1 6, and the bottom end of the fixing block 1 6 is fixedly connected to the support plate 7;

[0027] The bottom end of the support plate 7 is fixedly connected to a fixing block 2 8, one side of the fixing block 8 is threadedly connected to a fastening bolt 9, both sides of the fastening bolt 9 are provided with sliding rods 10, the sliding rods 10 pass through the interior of the fixing block 2 8, and one side of the fastening bolt 9 is fixedly connected to a clamping block 11 through a bearing. Embodiment 2

[0028] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0029] Two clamping grooves 15 are provided on the outer surface of the drill shank 2, the slide rod 10 is slidably connected to the fixed block 8, and a rubber pad is fixedly connected inside the clamping block 11. The setting of the rubber pad prevents excessive friction between the clamping block 11 and the drill shank 2 when the tool rotates at high speed, thereby reducing the service life of the drill shank 2.

[0030] An adjustment hole 12 is provided on the outer surface of the fixing rod 3, and an adjustment rod 4 is provided on the outer side of the fixing rod 3. Two fixing screws 13 are threadedly connected to one side of the adjusting rod 4. The fixing screws 13 are rotated to flexibly adjust the position of the fixing rod 3 according to different milling requirements, and then the fixing screws 13 are rotated to connect with the adjustment hole 12, thereby completing the assembly between the fixing rod 3 and the adjusting rod 4 and improving work efficiency.

[0031] The outer wall of the fixed rod 3 is fixedly connected with a slide bar 17, and the interior of the adjusting rod 4 is provided with a slide groove 18. The sizes of the slide bar 17 and the slide groove 18 match each other. The slide bar 17 and the slide groove 18 limit the sliding of the fixed rod 3, thereby ensuring the stability of the fixed rod 3 and the adjusting rod 4 when moving. Embodiment 3

[0032] In addition to all the technical features of the first embodiment, this embodiment also includes:

[0033] Two telescopic rods 21 are fixedly connected to the top of the fixed rod 3, and a return spring 20 is arranged on the outside of the telescopic rod 21. The return spring 20 and the adjusting rod 4 are fixedly connected. When the fixed rod 3 moves, it drives the telescopic rod 21 and the return spring 20 to stretch and retract, and a shock-absorbing pad is fixedly installed at the connection to enhance the shock-absorbing effect of the device.

[0034] The top of the adjusting rod 4 is fixedly connected to a connecting plate 5, and a liquid inlet is opened at the top of the connecting plate 5. A cooling water trough 23 is fixedly connected to one side of the liquid inlet. The bottom end of the cooling water trough 23 is connected to a cooling pipe 19, and cooling water is transported into the liquid inlet. The cooling water flows to the cooling pipe 19 through the cooling water trough 23, thereby improving the cooling efficiency of the device, avoiding overheating of the device, and reducing the service life.

[0035] The cooling pipe 19 runs through the inside of the adjusting rod 4, the inside of the connecting plate 5 is fixed with a heat sink 22 by bolts, and the inside of the drill bit 1 is provided with a cooling hole 16. A layer of thermal conductive silicone grease is applied to the contact surface between the heat sink 22 and the connecting plate 5, so that the heat generated by the device can be more effectively conducted to the heat sink 22, and then dissipated to the surrounding air through the heat sink 22, thereby improving the heat dissipation efficiency.

[0036] Working principle: first rotate the drill bit 1, the drill bit 1 drives the threaded block 14 at the top of the drill handle 2 to be threadedly connected with the fixing rod 3, then rotate the fastening bolts 9 on both sides of the fixing block 2 8, the fastening bolts 9 drive the clamping blocks 11 to clamp the drill bit 1 under the action of the sliding rod 10, thereby enhancing the tightness of the connection between the drill bit 1 and the fixing rod 3, wherein the fixing block 2 8 is fixed to the bottom end of the fixing block 1 6 through the supporting plate 7, the clamping block 11 is tightly connected with the clamping groove 15 opened on the surface of the drill handle 2, then rotate the fixing screw 13, flexibly adjust the position of the fixing rod 3 according to different milling requirements, and then rotate the fixing screw 13 to connect with the adjusting hole 12, thereby completing the assembly between the fixing rod 3 and the adjusting rod 4, wherein the adjusting When the distance between the fixing rod 3 and the adjusting rod 4 is adjusted, under the action of the slide bar 17 and the slide groove 18, the fixing rod 3 will drive the telescopic rod 21 and the return spring 20 to stretch and retract when moving, and a shock-absorbing pad is fixedly installed at the connection to enhance the shock-absorbing effect of the device. Finally, cooling water is transported to the liquid inlet, and the cooling water flows to the cooling pipe 19 through the cooling water tank 23. The cooling water in the cooling pipe 19 is then sprayed out from the cooling hole 16 at the bottom end of the drill bit 1, thereby improving the cooling efficiency of the device. A layer of thermal conductive silicone grease is applied to the contact surface between the heat sink 22 and the connecting plate 5, so that the heat generated by the device is more effectively conducted to the heat sink 22, and then dissipated to the surrounding air through the heat sink 22, thereby improving the heat dissipation efficiency.

[0037] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0038] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A threaded shank drill bit with an anti-loosening structure, comprising a drill bit (1), characterized in that: The top end of the drill bit (1) is fixedly connected to a drill shank (2), and the top end of the drill shank (2) is fixedly connected to a threaded block (14); The outer side of the threaded block (14) is threadedly connected to a fixing rod (3), both sides of the bottom end of the fixing rod (3) are fixedly connected to a fixing block 1 (6), and the bottom end of the fixing block 1 (6) is fixedly connected to a support plate (7); The bottom end of the support plate (7) is fixedly connected to a second fixing block (8), one side of the second fixing block (8) is threadedly connected to a fastening bolt (9), sliding rods (10) are arranged on both sides of the fastening bolt (9), the sliding rods (10) pass through the interior of the second fixing block (8), and one side of the fastening bolt (9) is fixedly connected to a clamping block (11) via a bearing.

2. A threaded shank drill bit with an anti-loosening structure according to claim 1, characterized in that: The outer surface of the drill handle (2) is provided with two clamping grooves (15), the sliding rod (10) is slidably connected to the second fixed block (8), and a rubber pad is fixedly connected inside the clamping block (11).

3. A threaded shank drill bit with an anti-loosening structure according to claim 1, characterized in that: An adjustment hole (12) is provided on the outer surface of the fixing rod (3), an adjustment rod (4) is arranged on the outer side of the fixing rod (3), and two fixing screws (13) are threadedly connected to one side of the adjustment rod (4).

4. A threaded shank drill bit with an anti-loosening structure according to claim 3, characterized in that: A slide bar (17) is fixedly connected to the outer wall of the fixed rod (3), a slide groove (18) is provided inside the adjusting rod (4), and the slide bar (17) and the slide groove (18) have matching sizes.

5. The threaded shank drill bit with an anti-loosening structure according to claim 1, characterized in that: Two telescopic rods (21) are fixedly connected to the top end of the fixed rod (3); a return spring (20) is provided on the outside of the telescopic rod (21); and the return spring (20) is fixedly connected to the adjustment rod (4).

6. The threaded shank drill bit with an anti-loosening structure according to claim 3, characterized in that: The top end of the regulating rod (4) is fixedly connected to a connecting disk (5), the top end of the connecting disk (5) is provided with a liquid inlet, one side of the liquid inlet is fixedly connected to a cooling water trough (23), and the bottom end of the cooling water trough (23) is connected to a cooling pipe (19).

7. A threaded shank drill bit with an anti-loosening structure according to claim 6, characterized in that: The cooling pipe (19) passes through the interior of the adjusting rod (4), a heat sink (22) is fixed to the interior of the connecting plate (5) by means of bolts, and a cooling hole (16) is provided in the interior of the drill bit (1).

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