Detachable combined drill bit

Abstract

The utility model relates to the technical field of drill bits, in particular to a detachable combined drill bit which comprises a shell, a connector is arranged on the upper end face of the shell, a drill bit body is arranged on the lower side of the shell, the upper end of the drill bit body is inserted into the shell, a groove is formed in the outer surface of the shell, and a first magnetic ring is connected into the groove in a sliding mode. The outer surface of the shell is sleeved with a ring handle, the ring handle is fixedly connected with a first magnetic ring, a second magnetic ring is rotationally connected into the shell, the first magnetic ring and the second magnetic ring attract each other in a magnetic mode, multiple sets of teeth are fixedly installed at the lower end of the second magnetic ring, a threaded rod is rotationally connected into the shell, and a gear is fixedly installed on the outer surface of the threaded rod and meshed with the teeth. The outer surface of the threaded rod is in spiral transmission connection with a first threaded sleeve, and the first threaded sleeve is in sliding connection with the inner wall of the shell. By arranging the first threaded sleeve and the second threaded sleeve, double locking is conducted on the drill bit, and meanwhile the fixing effect on the drill bit is improved through the self-locking performance of threads.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to a detachable combined drill bit. Background Art

[0002] A drill bit is a tool used to drill through holes or blind holes in solid materials and to expand existing holes. A traditional drill bit is a whole, comprising a drilling portion and a shank portion that are connected to each other.

[0003] When a drill is used for a long time, the drilling part will be worn out, while the shank part is still intact and has to be scrapped together, which will cause waste of raw materials. In order to solve this problem, detachable and compatible combination drill bits began to be used.

[0004] For example, the technical solution disclosed in the utility model patent CN202220360946.9, a combination drill bit, divides the traditional drill bit into a drill shank with a drill head and a connecting unit. Through the setting of the connecting unit, when the drill bit has been used for a long time, the damaged drill shank can be disassembled and then replaced, thereby avoiding waste of raw materials. However, the adaptability of such a combination drill bit is low. When it is necessary to chamfer or countersink the top of the completed drill hole, it is necessary to replace the drill bit of different specifications and shapes, which is very troublesome. Summary of the Invention

[0005] The technical problem to be solved by the utility model is to provide a detachable combined drill bit.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a detachable combined drill bit, comprising a shell, an upper end surface of the shell is provided with a connector, a drill bit body is provided on the lower side of the shell, the upper end of the drill bit body is inserted into the interior of the shell, the outer surface of the shell is provided with a groove, a magnetic ring 1 is slidably connected to the interior of the groove, a ring handle is sleeved on the outer surface of the shell, the ring handle is fixedly connected to the magnetic ring 1, a magnetic ring 2 is rotatably connected to the interior of the shell, the magnetic ring 1 and the magnetic ring 2 are magnetically attracted to each other, and a plurality of groups of teeth are fixedly installed on the lower end of the magnetic ring 2, a threaded rod is rotatably connected to the interior of the shell, a gear is fixedly installed on the outer surface of the threaded rod, the gear is meshed with the teeth, a threaded sleeve 1 is spirally connected to the outer surface of the threaded rod, the threaded sleeve 1 is slidably connected to the inner wall of the shell, and a slot is provided on the outer surface of the drill bit corresponding to the threaded sleeve 1.

[0007] First, insert the upper end of the drill body into the outer shell, and then manually rotate the ring handle. The rotation of the ring handle will cause the magnetic ring 1 to rotate, and the magnetic ring 1 and the magnetic ring 2 inside the outer shell will be magnetically attracted to each other.

[0008] Furthermore, a thread groove is provided on the upper side of the outer surface of the drill body, and the outer surface of the thread groove is spirally connected to a threaded sleeve 2.

[0009] Therefore, the magnetic ring 2 will rotate synchronously, and the rotation of the magnetic ring 2 will cause the teeth to rotate, and the teeth will mesh with the gears on the threaded rod.

[0010] Furthermore, an inner cavity is provided inside the second threaded sleeve, and a slide is slidably connected to the inner cavity, and both the inner cavity and the slide are arranged in a plum blossom shape.

[0011] Therefore, the threaded rod will rotate synchronously, and the threaded sleeve connected to the spiral transmission on the outer surface of the threaded rod will be pushed forward and inserted into the slot on the drill body to preliminarily fix the drill body.

[0012] Furthermore, a fixing rod is fixedly installed on the inner upper end surface of the shell, and the fixing rod extends into the interior of the inner cavity and is fixedly connected to the slide.

[0013] Furthermore, a sliding groove is provided on the outer surface of the second threaded sleeve, and a slider is slidably connected to the interior of the sliding groove.

[0014] The rotation of the second magnetic ring will cause the second threaded sleeve to rotate through the action of the connecting rod, slider and slide groove. The second threaded sleeve is spirally connected to the threaded groove on the drill bit body, thereby descending and being fixed to the drill bit body, thereby completing the secondary fixation of the drill bit body.

[0015] Furthermore, a connecting rod is fixedly installed between the slider and the second magnetic ring, and there are multiple groups of connecting rods, sliding grooves and sliders, which are dispersed in a ring shape.

[0016] Compared with the prior art, the beneficial effects of the present invention are:

[0017] 1. The utility model provides a first threaded sleeve and a second threaded sleeve to double-lock the drill bit, while utilizing the self-locking property of the thread to increase the fixing effect of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific implementation methods of the utility model or the technical solutions in the prior art, the drawings required for use in the specific implementation methods or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are some implementation methods of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0019] Figure 1 This is the overall structural view of the utility model;

[0020] Figure 2It is a cross-sectional view of the overall structure of the utility model;

[0021] Figure 3 For the utility model Figure 2 A in the middle is an enlarged schematic diagram;

[0022] Figure 4 For the utility model Figure 2 Enlarged schematic diagram of point B in the middle.

[0023] Description of reference numerals:

[0024] 1. Connector; 2. Housing; 3. Drill body; 4. Ring handle; 5. Groove; 6. Magnetic ring 1; 7. Magnetic ring 2; 8. Teeth; 9. Threaded rod; 10. Gear; 11. Threaded sleeve 1; 12. Slot; 13. Threaded groove; 14. Connecting rod; 15. Threaded sleeve 2; 16. Slide; 17. Slider; 18. Inner cavity; 19. Fixed rod; 20. Slide plate. DETAILED DESCRIPTION

[0025] 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.

[0026] See also Figures 1 to 4 , the utility model provides a technical solution:

[0027] A detachable combined drill bit includes a shell 2, a connector 1 is provided on the upper end face of the shell 2, a drill bit body 3 is provided on the lower side of the shell 2, the upper end of the drill bit body 3 is inserted into the interior of the shell 2, a groove 5 is provided on the outer surface of the shell 2, a magnetic ring 6 is slidably connected inside the groove 5, a ring handle 4 is sleeved on the outer surface of the shell 2, the ring handle 4 is fixedly connected to the magnetic ring 6, a magnetic ring 2 is rotatably connected to the interior of the shell 2, the magnetic ring 16 and the magnetic ring 27 are magnetically attracted to each other, and a plurality of groups of teeth 8 are fixedly installed on the lower end of the magnetic ring 27, a threaded rod 9 is rotatably connected to the interior of the shell 2, a gear 10 is fixedly installed on the outer surface of the threaded rod 9, the gear 10 is meshed with the teeth 8, the outer surface of the threaded rod 9 is spirally connected to a threaded sleeve 11, the threaded sleeve 11 is slidably connected to the inner wall of the shell 2, and a slot 12 is provided on the outer surface of the drill bit corresponding to the threaded sleeve 11.

[0028] First, insert the upper end of the drill body 3 into the shell 2, and then manually rotate the ring handle 4. The rotation of the ring handle 4 will carry the magnetic ring 1 6 to rotate, and the magnetic ring 1 6 and the magnetic ring 2 7 inside the shell 2 are magnetically attracted to each other.

[0029] A thread groove 13 is formed on the upper side of the outer surface of the drill body 3 , and a threaded sleeve 15 is spirally connected to the outer surface of the thread groove 13 .

[0030] Therefore, the magnetic ring 2 7 will rotate synchronously, and the rotation of the magnetic ring 2 7 will cause the teeth 8 to rotate, and the teeth 8 will mesh with the gear 10 on the threaded rod 9.

[0031] An inner cavity 18 is formed inside the second threaded sleeve 15 , and a slide plate 20 is slidably connected to the inner cavity 18 . Both the inner cavity 18 and the slide plate 20 are arranged in a plum blossom shape.

[0032] Therefore, the threaded rod 9 will rotate synchronously, and the threaded sleeve 11 connected to the spiral transmission on the outer surface of the threaded rod 9 will be pushed forward and inserted into the slot 12 on the drill body 3 to preliminarily fix the drill body 3.

[0033] A fixing rod 19 is fixedly mounted on the inner upper end surface of the housing 2 . The fixing rod 19 extends into the interior of the inner cavity 18 and is fixedly connected to the slide plate 20 .

[0034] A sliding groove 16 is formed on the outer surface of the second threaded sleeve 15 , and a slider 17 is slidably connected to the interior of the sliding groove 16 .

[0035] The rotation of the magnetic ring 2 7 will cause the threaded sleeve 2 15 to rotate through the action of the connecting rod 14, the slider 17 and the slide groove 16. The threaded sleeve 2 15 is spirally connected to the threaded groove 13 on the drill body 3, thereby descending and being fixed to the drill body 3, thereby completing the secondary fixation of the drill body 3.

[0036] A connecting rod 14 is fixedly installed between the slider 17 and the magnetic ring 7. There are multiple groups of connecting rods 14, sliding grooves 16 and sliders 17, which are distributed in a ring shape.

[0037] Working principle: First, insert the upper end of the drill body 3 into the outer shell 2, and then manually rotate the ring handle 4. The rotation of the ring handle 4 will carry the magnetic ring 1 6 to rotate, and the magnetic ring 1 6 and the magnetic ring 2 7 inside the outer shell 2 are magnetically attracted to each other, so the magnetic ring 2 7 will rotate synchronously. The rotation of the magnetic ring 2 7 will carry the teeth 8 to rotate, and the teeth 8 are engaged with the gear 10 on the threaded rod 9, so the threaded rod 9 will rotate synchronously, and the threaded sleeve 1 11 connected to the spiral transmission on the outer surface of the threaded rod 9 will be pushed forward and inserted into the slot 12 on the drill body 3 to preliminarily fix the drill body 3. Secondly, the rotation of the magnetic ring 2 7 will cause the threaded sleeve 2 15 to rotate through the action of the connecting rod 14, the slider 17 and the slide groove 16. The threaded sleeve 2 15 is spirally connected to the threaded groove 13 on the drill body 3, thereby descending and being fixed to the drill body 3, thereby completing the secondary fixation of the drill body 3.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the above embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the above embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A detachable combined drill bit, comprising a housing (2), wherein the upper end surface of the housing (2) is provided with a connector (1), characterized in that: A drill body (3) is arranged on the lower side of the shell (2), the upper end of the drill body (3) is inserted into the interior of the shell (2), a groove (5) is provided on the outer surface of the shell (2), a magnetic ring (6) is slidably connected inside the groove (5), a ring handle (4) is sleeved on the outer surface of the shell (2), the ring handle (4) is fixedly connected to the magnetic ring (6), a magnetic ring (7) is rotatably connected inside the shell (2), the magnetic ring (6) and the magnetic ring (7) are mutually attracted, and the outer surface of the shell (2) is provided with a ring handle (4), the ring handle (4) is fixedly connected to the magnetic ring (6), and the inner surface of the shell (2) is rotatably connected to the magnetic ring (7), the magnetic ring (6) and the magnetic ring (7) are mutually attracted, and the outer surface of the shell (2) is provided with a ring handle (4), the ring handle (4) and the magnetic ring (6) are fixedly connected to the magnetic ring (6), and the outer surface of the shell (2) is provided with a magnetic ring (7) The lower end of the second magnetic ring (7) is fixedly mounted with a plurality of groups of teeth (8); the interior of the housing (2) is rotatably connected with a threaded rod (9); the outer surface of the threaded rod (9) is fixedly mounted with a gear (10); the gear (10) is meshed with the teeth (8); the outer surface of the threaded rod (9) is spirally connected with a threaded sleeve (11); the threaded sleeve (11) is slidably connected to the inner wall of the housing (2); and a slot (12) is provided on the outer surface of the drill bit corresponding to the threaded sleeve (11).

2. A detachable combined drill bit according to claim 1, characterized in that: A thread groove (13) is provided on the upper side of the outer surface of the drill bit body (3), and a second threaded sleeve (15) is spirally connected to the outer surface of the thread groove (13).

3. A detachable combined drill bit according to claim 2, characterized in that: An inner cavity (18) is provided inside the second threaded sleeve (15), and a slide plate (20) is slidably connected inside the inner cavity (18), and the inner cavity (18) and the slide plate (20) are both arranged in a plum blossom shape.

4. A detachable combined drill bit according to claim 3, characterized in that: A fixing rod (19) is fixedly mounted on the inner upper end surface of the outer shell (2); the fixing rod (19) extends into the interior of the inner cavity (18) and is fixedly connected to the slide plate (20).

5. A detachable combined drill bit according to claim 4, characterized in that: The outer surface of the threaded sleeve 2 (15) is provided with a slide groove (16), and the inner sliding connection of the slide groove (16) A slide block (17) is connected thereto.

6. A detachable combined drill bit according to claim 5, characterized in that: A connecting rod (14) is fixedly installed between the slider (17) and the second magnetic ring (7), and the connecting rod (14), the slide groove (16) and the slider (17) are correspondingly arranged in multiple groups and are dispersedly arranged in a ring shape.

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