Welded single-blade gun drill

Abstract

The utility model relates to the technical field of deep hole gun drill machining, and discloses a welding type single-blade gun drill which comprises a tool bit, one end of the tool bit is fixedly connected with a mounting seat, one end, away from the tool bit, of the mounting seat is fixedly connected with a connecting rod, and a connecting assembly is arranged on the outer wall of the connecting rod. According to the welding type single-blade gun drill, the threaded sleeve is rotated to achieve connection of the connecting assembly and the tool bit, the connecting assemblies with the connecting parts of different specifications are replaced, the requirement for gun drills of different specifications needed by different electric drills can be met, the limiting block is clamped with the clamping groove formed in the inner wall of the threaded sleeve under elastic pushing of the spring, and limiting of the threaded sleeve in the radial direction is achieved; the situation that the threaded sleeve moves in the drilling process to cause unstable connection of the tool bit is avoided, the stability degree of the connecting assembly is improved, the limiting rod and the limiting hole are connected in a clamped mode, the connecting rod is inserted into the sleeve at an accurate angle, and then the number of turns of rotation of the threaded sleeve just meets the requirement for clamping of the clamping groove and the limiting block.

Description

Technical Field

[0001] The utility model relates to the technical field of deep hole gun drill processing, in particular to a welded single-edge gun drill. Background Art

[0002] Gun drilling was originally developed to meet the needs of processing gun barrels. Prior to this, gun barrels were usually manufactured by winding and welding metal strips onto a mandrel. The continuous development and improvement of gun drilling processing equipment has enabled it to efficiently process small diameter precision deep holes. The emergence and development of this technology has led to the widespread use of gun drilling in the energy, automotive, aviation, mold and other industries.

[0003] According to a welded single-edged gun drill (publication number: CN 218192741 U) disclosed in the above application, a drill shank, a drill rod and a drill bit are connected in sequence, the drill rod has a W-shaped process groove at one end close to the drill bit, and the drill bit has a mounting portion adapted to the process groove at one end, a first cooling hole and a first chip groove are arranged in the length direction of the drill bit, wherein the chip groove is located at one side of the drill bit, and the first cooling hole runs through the entire drill bit, similarly, a second cooling hole and a second chip groove are arranged in the length direction of the drill shank, wherein the chip groove is located at one side of the drill shank, and the first cooling hole also runs through the entire drill shank.

[0004] However, the above-mentioned gun drill is a drill bit and a drill shank welded together. Welding the drill bit and the drill shank limits the flexible replacement of the drill bit. If different types or specifications of electric drills are used, different drill shanks may be required, which increases the complexity of replacement and adjustment. The entire assembly must be replaced, increasing unnecessary costs and waste. In view of this, we propose a welded single-edge gun drill. Utility Model Content

[0005] The utility model aims to provide a welded single-edge gun drill to solve the problems raised in the above background technology.

[0006] To achieve the above object, the utility model provides the following technical solution: a welded single-edge gun drill, comprising a cutter head, one end of the cutter head is fixedly connected to a mounting seat, an end of the mounting seat away from the cutter head is fixedly connected to a connecting rod, an outer wall of the connecting rod is provided with a connecting assembly, and the connecting assembly includes:

[0007] The outer wall of the connecting rod is connected to the sleeve, the sleeve is movably connected to the threaded sleeve, the outer wall of the connecting rod is fixedly connected with a spiral pattern, and the end of the sleeve away from the cutter head is fixedly connected with a connecting portion;

[0008] A limit block, wherein the outer wall of the sleeve is provided with a mounting groove, the inner bottom surface of the mounting groove is fixedly connected with a spring, and one end of the spring away from the inner bottom surface of the mounting groove is fixedly connected with the limit block;

[0009] A limiting ring is sleeved on the outer wall of the sleeve, one end of the threaded sleeve close to the limiting block is fixedly connected with a magnet, and the outer wall of the sleeve is fixedly connected with a magnetic part.

[0010] Preferably, a limiting hole is provided on a side of the mounting seat away from the cutter head, and a limiting rod is fixedly connected to a side of the connecting portion close to the cutter head.

[0011] Preferably, a clamping groove is provided on the inner wall of the threaded sleeve, and the clamping groove is clamped with the limiting block.

[0012] Preferably, the number of the limiting rods is arranged in several groups, the cross sections of the limiting rods in the several groups are different, and the limiting rods are engaged with the limiting holes.

[0013] Preferably, the magnetic part is magnetically connected to the limiting ring, and the limiting ring is magnetically connected to the magnet. When the cutter head is used for drilling, the limiting ring is magnetically adsorbed by the magnetic part to prevent the limiting ring from shaking.

[0014] Preferably, the connecting rod is threadably connected to the threaded sleeve via a spiral pattern provided on its outer surface, and the connecting assembly is fixed to the cutter head by rotating the threaded sleeve.

[0015] Compared with the prior art, the utility model provides a welded single-edge gun drill, which has the following beneficial effects:

[0016] 1. The welded single-edged gun drill realizes the connection between the connecting assembly and the cutter head by rotating the threaded sleeve through the provided sleeve, threaded sleeve and limit block. By replacing the connecting assembly with connecting parts of different specifications, the needs of gun drills of different specifications required by different electric drills can be met, which reduces the complexity of replacement and adjustment. The limit block is driven by the elasticity of the spring and is engaged with the groove provided on the inner wall of the threaded sleeve to realize the radial limitation of the threaded sleeve, thereby avoiding the movement of the threaded sleeve during the drilling process to cause unstable connection of the cutter head, and improving the stability of the connecting assembly.

[0017] 2. The welded single-edged gun drill has a limit rod and a limit hole, and the limit rods with different cross-sections are connected with the limit holes, so that the connecting rod is inserted into the sleeve at an accurate angle, so that the number of revolutions of the threaded sleeve just meets the needs of the connection between the slot and the limit block, and at the same time, the supporting part is increased, and the anti-twisting ability of the connecting part is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0019] Figure 2 It is an exploded view of the main body of the utility model;

[0020] Figure 3This is a schematic diagram of the structure of the connector of the utility model;

[0021] Figure 4 For this utility model Figure 3 Schematic diagram of the structure of the middle A area;

[0022] Figure 5 This is a cross-sectional structural diagram of the connector of the utility model;

[0023] Figure 6 For this utility model Figure 5 Schematic diagram of the structure of area B.

[0024] In the figure: 1. cutter head; 2. mounting seat; 3. connecting rod; 4. sleeve; 5. threaded sleeve; 6. spiral pattern; 7. connecting part; 8. mounting groove; 9. spring; 10. limit block; 11. limit ring; 12. magnetic part; 13. magnet; 14. limit rod; 15. limit hole. DETAILED DESCRIPTION

[0025] like Figure 1-Figure 6 As shown, the utility model provides a technical solution: a welded single-edge gun drill, including a cutter head 1, one end of the cutter head 1 is fixedly connected to a mounting seat 2, the end of the mounting seat 2 away from the cutter head 1 is fixedly connected to a connecting rod 3, the outer wall of the connecting rod 3 is provided with a connecting assembly, the connecting assembly includes a sleeve 4, a threaded sleeve 5, a spiral pattern 6, a connecting part 7, an installation groove 8, a spring 9, a limit block 10, a limit ring 11, a magnetic part 12, a magnet 13, a limit rod 14, and a limit hole 15.

[0026] In one embodiment of the utility model, the outer wall of the connecting rod 3 is movably connected to the sleeve 4, and the sleeve 4 is movably connected to the threaded sleeve 5. The outer wall of the connecting rod 3 is fixedly connected with a spiral pattern 6, and the end of the sleeve 4 away from the cutter head 1 is fixedly connected with a connecting portion 7. The connecting rod 3 is threadedly connected to the threaded sleeve 5 through the spiral pattern 6 set on its outer surface, wherein the rotation direction of the spiral pattern 6 is opposite to the rotation direction of the electric drill, so that when the electric drill is used, the spiral pattern 6 can still maintain the connection between the connecting component and the cutter head 1, and the connecting component and the cutter head 1 are fixed together by rotating the threaded sleeve 5. The outer wall of the sleeve 4 is provided with a mounting groove 8, and the inner bottom surface of the mounting groove 8 is fixedly connected with a spring 9, and the end of the spring 9 away from the inner bottom surface of the mounting groove 8 is fixedly connected to a limiting block 10 A slot is provided on the inner wall of the threaded sleeve 5, which is engaged with the limit block 10, and a limit ring 11 is sleeved on the outer wall of the sleeve 4. A magnet 13 is fixedly connected to one end of the threaded sleeve 5 close to the limit block 10, and a magnetic part 12 is fixedly connected to the outer wall of the sleeve 4. The magnetic part 12 is magnetically connected to the limit ring 11, and the limit ring 11 is magnetically connected to the magnet 13. When the cutter head 1 is used for drilling, the limit ring 11 is magnetically adsorbed by the magnetic part 12 to avoid the shaking of the limit ring 11. A limit hole 15 is provided on the side of the mounting seat 2 away from the cutter head 1, and a limit rod 14 is fixedly connected to the side of the connecting portion 7 close to the cutter head 1. The number of limit rods 14 is provided in several groups, and the cross-sections of the limit rods 14 in the several groups are different. The limit rod 14 is engaged with the limit hole 15.

[0027] The threaded sleeve 5 is connected to the cutting head 1 by the threaded sleeve 5, and the threaded sleeve 5 is connected to the cutting head 1 by the threaded sleeve 5. When the threaded sleeve 5 is rotated, the threaded sleeve 5 moves toward the cutting head 1. At this time, the limit ring 11 is connected to the threaded sleeve 5 through the magnet 13, and the limit ring 11 also moves in the opposite direction of the threaded sleeve 5 toward the cutting head 1. When the threaded sleeve 5 is tightened, the limit ring 11 is pushed in the opposite direction. The limit ring 11 cancels the limit on the limit block 10, and then under the elastic action of the spring 9, the limit block 10 is pushed. The limit block 10 is engaged with the slot opened on the inner wall of the threaded sleeve 5, thereby realizing the radial limit of the threaded sleeve 5, avoiding the movement of the threaded sleeve 5 during the drilling process to cause the unstable connection of the cutting head 1, and improving the stability of the connecting assembly.

[0028] In addition, a limiting hole 15 is provided on the side of the mounting seat 2 away from the cutter head 1, and a limiting rod 14 is fixedly connected to the side of the connecting portion 7 close to the cutter head 1. The number of limiting rods 14 is provided in several groups, and the cross-sections of the limiting rods 14 in the several groups are different. The limiting rods 14 are clamped with the limiting holes 15. By clamping the limiting rods 14 with different cross-sections with the limiting holes 15, the connecting rod 3 can be inserted into the sleeve 4 at an accurate angle, and the number of rotations of the threaded sleeve 5 just meets the clamping of the slot and the limiting block 10. At the same time, by increasing the supporting part, the anti-twisting ability of the connecting part is improved.

[0029] In the utility model, when in use, the threaded sleeve 5 is rotated to fix the connecting assembly and the cutter head 1 together, and then the limiting ring 11 is pushed in the opposite direction. Under the elastic action of the spring 9, the limiting block 10 is engaged with the groove provided on the inner wall of the threaded sleeve 5 to achieve radial limitation of the threaded sleeve 5. Furthermore, the limiting rod 14 with different cross-sections is engaged with the limiting hole 15, so that the connecting rod 3 is inserted into the sleeve 4 at an accurate angle, thereby strengthening the supporting part and improving the anti-twisting performance of the connecting assembly.

[0030] The above generally describes the present invention in detail, but it is obvious to a person skilled in the art that some modifications or improvements can be made to the present invention. Therefore, modifications or improvements that do not depart from the spirit of the present invention are within the scope of protection of the present invention.

Claims

1. A welded single-edge gun drill, comprising a cutter head (1), one end of the cutter head (1) being fixedly connected to a mounting seat (2), and one end of the mounting seat (2) being away from the cutter head (1) being fixedly connected to a connecting rod (3), characterized in that: The outer wall of the connecting rod (3) is provided with a connecting assembly, and the connecting assembly comprises: A sleeve (4), the outer wall of the connecting rod (3) and the sleeve (4), the sleeve (4) and the threaded sleeve (5) are movably connected, the outer wall of the connecting rod (3) is fixedly connected with a spiral pattern (6), and the end of the sleeve (4) away from the cutter head (1) is fixedly connected with a connecting portion (7); A limit block (10), wherein the outer wall of the sleeve (4) is provided with a mounting groove (8), the inner bottom surface of the mounting groove (8) is fixedly connected with a spring (9), and one end of the spring (9) away from the inner bottom surface of the mounting groove (8) is fixedly connected with the limit block (10); A limiting ring (11) is sleeved on the outer wall of the sleeve (4), a magnet (13) is fixedly connected to one end of the threaded sleeve (5) close to the limiting block (10), and a magnetic part (12) is fixedly connected to the outer wall of the sleeve (4).

2. A welded single-edge gun drill according to claim 1, characterized in that: A limiting hole (15) is provided on a side of the mounting seat (2) away from the cutter head (1), and a limiting rod (14) is fixedly connected to a side of the connecting portion (7) close to the cutter head (1).

3. A welded single-edge gun drill according to claim 1, characterized in that: The inner wall of the threaded sleeve (5) is provided with a clamping groove, and the clamping groove is clamped with the limiting block (10).

4. A welded single-edge gun drill according to claim 2, characterized in that: The number of the limiting rods (14) is arranged in a plurality of groups, the cross sections of the limiting rods (14) in the plurality of groups are different, and the limiting rods (14) are snap-connected with the limiting holes (15).

5. The welded single-edge gun drill according to claim 1, characterized in that: The magnetic member (12) is magnetically connected to the limiting ring (11), and the limiting ring (11) is magnetically connected to the magnet (13).

6. A welded single-edge gun drill according to claim 1, characterized in that: The connecting rod (3) is threadedly connected to the threaded sleeve (5) via the spiral pattern (6) provided on the outer surface of the connecting rod (3).

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