Drill bit with damping function

Abstract

The utility model discloses a drill bit with a damping function, which belongs to the technical field of drill bits and comprises a drill tip and a drill handle, the top end of the drill tip is fixedly connected with a connecting handle, the bottom end of the drill handle is fixedly provided with a first connecting sleeve, and one side of the first connecting sleeve is provided with a second connecting sleeve. A locking assembly is arranged between the first connecting sleeve and the second connecting sleeve; through the arrangement of the first connecting sleeve, the second connecting sleeve and the connecting handle, the drill tip and the drill handle can be movably connected together, the spring shock absorbers are arranged between the connecting handle and the first connecting sleeve and between the connecting handle and the second connecting sleeve, the shock absorption effect on the drill tip can be achieved, and the situation that the machining quality is reduced due to vibration of the drill tip in the machining process is prevented; and the first connecting sleeve and the second connecting sleeve in the device are detachably connected, so that the device is convenient to disassemble, overhaul and maintain, the replacement frequency of the drill bit is reduced, and the production cost is further reduced.

Description

Technical Field

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

[0002] The drill bit is a tool commonly used in metal processing. It is made of high-speed steel material, has high hardness, wear resistance and heat resistance, and can effectively cut metal materials when rotating at high speed. When the drill bit contacts the surface of the workpiece, due to the cutting force and the difference in hardness of the workpiece, it will produce violent collision and vibration.

[0003] The drill bit will vibrate during the processing, and the vibration of the drill bit will cause irregular or inaccurate holes in the processing process, thereby reducing the processing quality. The vibration may also cause problems such as damage to the cutting edge, rough processing surface or residual vibration marks. Therefore, we need to propose a drill bit with shock absorption function. Utility Model Content

[0004] The purpose of the utility model is to provide a drill bit with a shock-absorbing function, which has the advantages of being able to absorb shock on the drill bit to ensure processing quality and avoid damage to the drill bit, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides a drill bit with a shock-absorbing function, comprising a drill tip and a drill shank, the top of the drill tip is fixedly connected to a connecting handle, the bottom end of the drill shank is fixedly installed with a first connecting sleeve, a second connecting sleeve is provided on one side of the first connecting sleeve, a locking assembly is provided between the first connecting sleeve and the second connecting sleeve, the first connecting sleeve and the second connecting sleeve are locked and fixed together by the locking assembly, a positioning assembly is also provided between the first connecting sleeve and the second connecting sleeve, a limiting assembly is provided between the surface of the connecting handle and the inner walls of the first connecting sleeve and the second connecting sleeve, a spring shock absorber is fixedly installed on the top of the connecting handle, and the top of the spring shock absorber is in contact with the top of the inner cavity of the first connecting sleeve and the second connecting sleeve.

[0006] Preferably, the limiting assembly includes a limiting protrusion integrally formed on the surface of the connecting handle, the inner walls of the first connecting sleeve and the second connecting sleeve are both provided with limiting grooves adapted to the limiting protrusion, and the surface of the limiting protrusion is slidably connected to the inner wall of the limiting groove.

[0007] Preferably, the locking assembly includes a locking rod arranged on one side of the first connecting sleeve, and a locking nut corresponding to the locking rod is arranged on one side of the second connecting sleeve, and one end of the locking rod passes through the first connecting sleeve and the second connecting sleeve in sequence and is threadedly connected to the locking nut.

[0008] Preferably, through holes are provided on the surfaces of the first connecting sleeve and the second connecting sleeve at positions corresponding to the locking rod, and one end of the locking rod is slidably plugged into the inner cavity of the through hole.

[0009] Preferably, countersunk holes are provided on the surfaces of the first connecting sleeve and the second connecting sleeve at corresponding positions of the through hole, one end of the countersunk hole is connected to the surface of the through hole, and one end of the locking rod and the locking nut are respectively hidden in the corresponding countersunk hole cavities.

[0010] Preferably, the positioning assembly includes a positioning block fixedly mounted on one side of the first connecting sleeve, a positioning groove is provided on one side of the second connecting sleeve and at a position corresponding to the positioning block, and a surface of the positioning block is snap-fitted to an inner wall of the positioning groove.

[0011] Preferably, a plurality of groups of connecting flat grooves are formed on the surface of the drill shank, and the connecting flat grooves are symmetrically arranged in pairs.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] The utility model can flexibly connect the drill tip and the drill handle together through the arrangement of the first connecting sleeve, the second connecting sleeve and the connecting handle. A spring shock absorber is arranged between the connecting handle and the first connecting sleeve and the second connecting sleeve, which can reduce the shock of the drill tip, prevent the machining quality from being reduced due to the vibration of the drill tip during the machining process, and prevent the drill tip from being damaged due to the vibration. In addition, the first connecting sleeve and the second connecting sleeve in the device are detachably connected, which is convenient for disassembly, inspection and maintenance, and reduces the frequency of drill bit replacement, thereby reducing production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the structure of the utility model;

[0015] Figure 2 It is a structural schematic diagram of the limit assembly of the utility model;

[0016] Figure 3 It is a structural schematic diagram of the positioning component of the utility model.

[0017] In the figure: 1, drill tip; 2, drill shank; 3, connecting handle; 4, first connecting sleeve; 5, second connecting sleeve; 6, spring shock absorber; 7, limiting protrusion; 8, limiting groove; 9, locking rod; 10, locking nut; 11, through hole; 12, countersunk hole; 13, positioning block; 14, positioning groove; 15, connecting flat groove. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figure 1-Figure 3 The utility model provides a drill bit with a shock-absorbing function, comprising a drill tip 1 and a drill shank 2. The surface of the drill shank 2 is provided with a plurality of groups of connecting flat grooves 15, and the connecting flat grooves 15 are symmetrically arranged in pairs. The top of the drill tip 1 is fixedly connected with a connecting shank 3, and the bottom of the drill shank 2 is fixedly installed with a first connecting sleeve 4, and a second connecting sleeve 5 is arranged on one side of the first connecting sleeve 4. A locking assembly is arranged between the first connecting sleeve 4 and the second connecting sleeve 5, and the first connecting sleeve 4 and the second connecting sleeve 5 are locked and fixed together by the locking assembly. The locking assembly comprises a locking rod 9 arranged on one side of the first connecting sleeve 4, and a locking nut 10 corresponding to the locking rod 9 is arranged on one side of the second connecting sleeve 5. One end of the locking rod 9 passes through the first connecting sleeve 4 and the second connecting sleeve 5 in sequence and is threadedly connected with the locking nut 10.

[0020] In this embodiment, the first connecting sleeve 4 and the second connecting sleeve 5 are detachably arranged, which can facilitate installation or removal and replacement of the internal structure thereof, and they are locked and fixed together by a locking assembly. During installation, the user can sequentially pass one end of the locking rod 9 through the first connecting sleeve 4 and the second connecting sleeve 5, and tighten the locking nut 10 at one end of the locking rod 9 to lock and fix the first connecting sleeve 4 and the second connecting sleeve 5 together. Through the arrangement of the drill shank 2, the connecting flat groove 15 on the surface of the drill shank 2 can facilitate its installation on a machine tool.

[0021] Preferably, a through hole 11 is provided on the surface of the first connecting sleeve 4 and the second connecting sleeve 5 and at a corresponding position of the locking rod 9, one end of the locking rod 9 is slidably inserted into the inner cavity of the through hole 11, and a countersunk hole 12 is provided on the surface of the first connecting sleeve 4 and the second connecting sleeve 5 and at a corresponding position of the through hole 11, one end of the countersunk hole 12 is connected to the surface of the through hole 11, and one end of the locking rod 9 and the locking nut 10 are respectively hidden in the corresponding inner cavities of the countersunk hole 12.

[0022] Through the setting of the through hole 11, it is convenient for the user to insert the locking rod 9 into the first connecting sleeve 4 and the second connecting sleeve 5. Through the setting of the countersunk hole 12, when the locking rod 9 and the locking nut 10 are tightened together, one end of the locking rod 9 is hidden in the countersunk hole 12 on the surface of the first connecting sleeve 4, and the other end of the locking nut 10 and the locking rod 9 is hidden in the countersunk hole 12 on the surface of the second connecting sleeve 5, which can ensure the flatness of the surface of the first connecting sleeve 4 and the second connecting sleeve 5.

[0023] Among them, a positioning assembly is also arranged between the first connecting sleeve 4 and the second connecting sleeve 5, and the positioning assembly includes a positioning block 13 fixedly installed on one side of the first connecting sleeve 4, and a positioning groove 14 is opened on one side of the second connecting sleeve 5 and at a corresponding position of the positioning block 13, and the surface of the positioning block 13 is clamped with the inner wall of the positioning groove 14.

[0024] By setting the positioning component, the first connecting sleeve 4 and the second connecting sleeve 5 can be positioned when they are installed so that the through holes 11 on their surfaces are aligned. During installation, the user can put the first connecting sleeve 4 and the second connecting sleeve 5 together, and the positioning block 13 will be stuck in the inner cavity of the positioning groove 14.

[0025] It is worth mentioning that a limiting assembly is arranged between the surface of the connecting handle 3 and the inner walls of the first connecting sleeve 4 and the second connecting sleeve 5, and the limiting assembly includes a limiting protrusion 7 integrally formed on the surface of the connecting handle 3, and the inner walls of the first connecting sleeve 4 and the second connecting sleeve 5 are both provided with a limiting groove 8 adapted to the limiting protrusion 7, and the surface of the limiting protrusion 7 is slidably connected to the inner wall of the limiting groove 8.

[0026] By setting the limiting component, the connecting handle 3 and the drill tip 1 can be limited so that they can rotate along with the drill handle 2. When the drill handle 2 rotates, the limiting groove 8 will be driven to rotate through the first connecting sleeve 4 and the second connecting sleeve 5, and then the connecting handle 3 and the drill tip 1 will be driven to rotate through the limiting protrusion 7.

[0027] Furthermore, a spring shock absorber 6 is fixedly installed on the top of the connecting handle 3, and the top of the spring shock absorber 6 is in contact with the top of the inner cavity of the first connecting sleeve 4 and the second connecting sleeve 5. By installing the spring shock absorber 6 on the top of the connecting handle 3, the drill tip 1 can be shock-absorbing during the processing of the workpiece, thereby preventing the processing quality from being reduced due to the vibration of the drill tip 1 during the processing, and preventing the drill tip 1 from being damaged due to vibration.

[0028] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A drill bit with a shock absorbing function, comprising a drill tip (1) and a drill shank (2), characterized in that: The top end of the drill tip (1) is fixedly connected to a connecting handle (3), the bottom end of the drill handle (2) is fixedly installed with a first connecting sleeve (4), one side of the first connecting sleeve (4) is provided with a second connecting sleeve (5), a locking assembly is provided between the first connecting sleeve (4) and the second connecting sleeve (5), the first connecting sleeve (4) and the second connecting sleeve (5) are locked and fixed together by the locking assembly, a positioning assembly is also provided between the first connecting sleeve (4) and the second connecting sleeve (5), a limiting assembly is provided between the surface of the connecting handle (3) and the inner walls of the first connecting sleeve (4) and the second connecting sleeve (5), a spring shock absorber (6) is fixedly installed on the top of the connecting handle (3), and the top of the spring shock absorber (6) is in contact with the top of the inner cavity of the first connecting sleeve (4) and the second connecting sleeve (5).

2. A drill bit with a shock absorbing function according to claim 1, characterized in that: The limiting assembly comprises a limiting protrusion (7) integrally formed on the surface of the connecting handle (3); the inner walls of the first connecting sleeve (4) and the second connecting sleeve (5) are both provided with a limiting groove (8) adapted to the limiting protrusion (7); the surface of the limiting protrusion (7) is slidably connected to the inner wall of the limiting groove (8).

3. A drill bit with a shock absorbing function according to claim 1, characterized in that: The locking assembly comprises a locking rod (9) arranged on one side of the first connecting sleeve (4), a locking nut (10) corresponding to the locking rod (9) is arranged on one side of the second connecting sleeve (5), and one end of the locking rod (9) passes through the first connecting sleeve (4) and the second connecting sleeve (5) in sequence and is threadedly connected to the locking nut (10).

4. A drill bit with a shock absorbing function according to claim 3, characterized in that: Through holes (11) are provided on the surfaces of the first connecting sleeve (4) and the second connecting sleeve (5) at positions corresponding to the locking rod (9), and one end of the locking rod (9) is slidably plugged into the inner cavity of the through hole (11).

5. A drill bit with a shock absorbing function according to claim 4, characterized in that: Countersunk holes (12) are provided on the surfaces of the first connecting sleeve (4) and the second connecting sleeve (5) at positions corresponding to the through hole (11); one end of the countersunk hole (12) is connected to the surface of the through hole (11); one end of the locking rod (9) and the locking nut (10) are respectively hidden in the corresponding inner cavities of the countersunk holes (12).

6. A drill bit with a shock absorbing function according to claim 1, characterized in that: The positioning assembly comprises a positioning block (13) fixedly mounted on one side of the first connecting sleeve (4); a positioning groove (14) is provided on one side of the second connecting sleeve (5) at a position corresponding to the positioning block (13); and a surface of the positioning block (13) is snap-fitted to an inner wall of the positioning groove (14).

7. The drill bit with shock absorption function according to claim 1, characterized in that: The surface of the drill handle (2) is provided with a plurality of groups of connecting flat grooves (15), and the connecting flat grooves (15) are symmetrically arranged in pairs.

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