Nail-cutting high-speed steel branch screw drill

Abstract

The utility model discloses a nail cutting high-speed steel branch screw drill, and relates to the technical field of woodworking drilling. The nail cutting high-speed steel branch screw drill comprises a drill handle, a drill rod is fixedly connected to the lower surface of the drill handle, a cutting edge is arranged on the drill rod, a conical screw tip is fixedly connected to the lower surface of the cutting edge, the outer wall of the drill handle is fixedly sleeved with a bearing, an auxiliary device is arranged on the bearing, and the auxiliary device comprises a concave fixing plate. The concave fixing plate is fixedly connected to the front surface of the bearing, a connecting plate is connected to the concave position of the concave fixing plate in an inserted mode and fixedly connected through fixing threads, a round sliding sleeve is fixedly connected to the front surface of the connecting plate, the auxiliary device further comprises an auxiliary rod, and the auxiliary rod is slidably connected into the inner wall of the round sliding sleeve in a sleeved mode. The two auxiliary rods are arranged to play a role in positioning and stabilizing when the whole drill rod works, the situation that under strong vibration, due to the fact that a worker works for a long time, the hand strength is weakened, and punching deviation occurs is prevented, and the punching quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of woodworking drilling, in particular to a nail cutting high-speed steel support auger. Background Art

[0002] A common woodworking drill consists of a main cutting edge and a side cutting edge. The main cutting edge is mainly used to cut the wood in the middle of the hole, and the side cutting edge is used to cut the wall of the drilled hole and make the wall of the drilled hole smooth and of uniform and regular size. Since the materials drilled by woodworking drills are usually loose and not hard, their cutting edges are relatively sharp, with larger front and rear angles and a smaller angle between the front and rear blades. There are nail cutting drills (also called nail cutting straight drills) on the market for cutting nails that may be in wood. The main cutting edge of this drill has a small front angle, high strength, and the material is changed to bearing steel.

[0003] When drilling holes, the auger is usually fixed on a manual electric rotary, and then the worker holds the manual electric rotary to drill holes. The worker's hands are used as downward pressure to drill holes, but a large amount of vibration is generated during its work. In addition, the worker's hand strength is weakened due to long-term work, and the drilling deviation is easy to occur, which reduces the drilling quality. In severe cases, the auger may also break. Utility Model Content

[0004] 1. Technical issues to be resolved

[0005] The purpose of the utility model is to solve at least one of the technical problems existing in the prior art and to provide a high-speed steel screw drill for cutting nails, which can solve the problem that a large amount of vibration will be generated when it is working, and the hand strength of the staff will be weakened due to long-term work, and the drilling deviation will easily occur, thereby reducing the drilling quality.

[0006] (II) Technical solution

[0007] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a high-speed steel screw drill for cutting nails, comprising a drill shank, the lower surface of which is fixedly connected to a drill rod, the drill rod is provided with a cutting edge, the lower surface of the cutting edge is fixedly connected to a conical screw tip, the outer wall of the drill shank is fixedly sleeved with a bearing, and the bearing is provided with an auxiliary device.

[0008] Preferably, the auxiliary device includes a concave fixing plate, which is fixedly connected to the front surface of the bearing, a connecting plate is inserted into the concave part of the concave fixing plate and fixedly connected by a fixing thread, and a circular sliding sleeve is fixedly connected to the front surface of the connecting plate.

[0009] Preferably, the auxiliary device also includes an auxiliary rod, which is slidably sleeved in the inner wall of the circular sleeve, the upper end of the auxiliary rod is fixedly connected to a circular fixing plate, the lower end of the outer wall of the auxiliary rod is fixedly sleeved with a circular sleeve, and a guide hole is opened on the lower surface of the auxiliary rod.

[0010] Preferably, the auxiliary device also includes a guide rod, which is slidably connected to the inner wall of the guide hole, and a second spring is fixedly connected to the upper surface of one end of the guide rod located inside the guide hole, and the second spring is fixedly connected to the top of the guide hole.

[0011] Preferably, the auxiliary device also includes a circular support plate, which is fixedly connected to the lower surface of the guide rod, and a first spring is fixedly connected to the middle of the upper surface of the circular support plate. The first spring is movably sleeved on the outer wall of the guide rod, and the upper surface of the first spring is fixedly connected to the lower surface of the circular sleeve.

[0012] Preferably, the number of the auxiliary devices is two, and the two auxiliary devices are mirror-imaged.

[0013] (III) Beneficial effects

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The high-speed steel support auger for cutting nails has two auxiliary rods to position and stabilize the drill rod as a whole during operation, thereby preventing the drilling deviation from occurring due to strong vibration and weakened hand strength caused by long working hours, thereby improving the drilling quality.

[0016] (2) The nail-cutting high-speed steel support auger is designed to improve the stability of the nail-cutting high-speed steel support auger by removing the two fixing bolts on the concave fixing plate, thereby completing the removal of the two auxiliary rods as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 It is a bottom view schematic diagram of the lower surface of the utility model as a whole;

[0020] Figure 3 It is a bottom view of the lower surface of the auxiliary rod of the utility model.

[0021] Figure numerals: 1. drill handle; 2. concave fixing plate; 3. drill rod; 4. cutting edge; 5. conical screw tip; 6. circular support plate; 7. guide rod; 8. first spring; 9. circular sleeve; 10. auxiliary rod; 11. circular sliding sleeve; 12. circular fixing plate; 13. connecting plate; 14. conical anti-sliding block; 15. second spring; 16. guide hole; 17. bearing. DETAILED DESCRIPTION

[0022] This section will describe in detail the specific embodiments of the utility model. The preferred embodiments of the utility model are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the utility model, but it cannot be understood as a limitation on the protection scope of the utility model.

[0023] In the description of the present invention, it should be understood that descriptions involving orientation, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0024] In the description of the present utility model, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0025] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0026] See also Figure 1-Figure 3 The utility model provides a technical solution: a high-speed steel screw drill for cutting nails, including a drill shank 1, a drill rod 3 is fixedly connected to the lower surface of the drill shank 1, a cutting edge 4 is arranged on the drill rod 3, a conical screw tip 5 is fixedly connected to the lower surface of the cutting edge 4, a bearing 17 is fixedly sleeved on the outer wall of the drill shank 1, and an auxiliary device is arranged on the bearing 17.

[0027] Furthermore, the auxiliary device includes a concave fixing plate 2, which is fixedly connected to the front surface of the bearing 17. A connecting plate 13 is inserted into the concave part of the concave fixing plate 2 and fixedly connected by fixing threads. A circular sleeve 11 is fixedly connected to the front surface of the connecting plate 13.

[0028] Furthermore, the auxiliary device also includes an auxiliary rod 10, which is slidably sleeved in the inner wall of the circular sliding sleeve 11, the upper end of the auxiliary rod 10 is fixedly connected to a circular fixing plate 12, the lower end of the outer wall of the auxiliary rod 10 is fixedly sleeved with a circular sleeve 9, and a guide hole 16 is opened on the lower surface of the auxiliary rod 10.

[0029] Furthermore, the auxiliary device also includes a guide rod 7, which is slidably connected to the inner wall of the guide hole 16, and a second spring 15 is fixedly connected to the upper surface of one end of the guide rod 7 inside the guide hole 16, and the second spring 15 is fixedly connected to the top inside the guide hole 16.

[0030] Furthermore, the auxiliary device also includes a circular support plate 6, which is fixedly connected to the lower surface of the guide rod 7, and a first spring 8 is fixedly connected to the middle of the upper surface of the circular support plate 6. The first spring 8 is movably sleeved on the outer wall of the guide rod 7, and the upper surface of the first spring 8 is fixedly connected to the lower surface of the circular sleeve 9.

[0031] Furthermore, the number of the auxiliary devices is two, and the two auxiliary devices are mirror-imaged.

[0032] Furthermore, when using the present high-speed steel support auger for cutting nails, first connect it to the external manual electric motor through the drill handle 1, then align the conical screw tip 5 with the top of the wood to be drilled, and make the two circular support plates 6 fit with the wood, and then start the manual electric motor to drive the drill rod 3 to rotate. During the rotation, the drill rod 3 will move downward under the action of the conical screw tip 5 and the cutting edge 4, and at the same time, drive the two circular sliding sleeves 11 through the outer walls of the two auxiliary rods 10 through the bearing 17 and the two connecting plates 13 to slide downward. By setting the two auxiliary rods 10, the positioning and stabilization of the drill rod 3 as a whole are played to prevent the occurrence of drilling deviation due to strong vibration and the weakening of hand strength caused by long-term work of the staff, thereby improving the drilling quality and drilling in narrow positions at the same time. By removing the two fixing bolts on the concave fixing plate 2, the overall removal of the two auxiliary rods 10 is completed, thereby improving the stability of the present high-speed steel support auger for cutting nails.

[0033] Working principle: When using the present high-speed steel support auger for cutting nails, first connect it to the external manual electric motor through the drill handle 1, then align the conical screw tip 5 with the top of the wood to be drilled, and make the two circular support plates 6 fit with the wood, then start the manual electric motor to drive the drill rod 3 to rotate. The drill rod 3 will move downward under the action of the conical screw tip 5 and the cutting edge 4 during rotation, and at the same time, drive the two circular sliding sleeves 11 through the outer walls of the two auxiliary rods 10 through the bearing 17 and the two connecting plates 13 to slide downward. The two auxiliary rods 10 are provided to play a role in positioning and stabilizing the drill rod 3 when it is working as a whole, to prevent the occurrence of drilling deviation due to strong vibration and the weakening of hand strength caused by long-term work of the staff, thereby improving the drilling quality and drilling in narrow positions at the same time. By removing the two fixing bolts on the concave fixing plate 2, the two auxiliary rods 10 are removed as a whole, thereby improving the stability of the present high-speed steel support auger for cutting nails.

[0034] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments. Various changes can be made within the knowledge scope of ordinary technicians in the technical field without departing from the purpose of the present invention.

Claims

1. A high-speed steel screw drill for cutting nails, comprising a drill handle (1), a drill rod (3) being fixedly connected to the lower surface of the drill handle (1), a cutting edge (4) being provided on the drill rod (3), a conical screw tip (5) being fixedly connected to the lower surface of the cutting edge (4), Features: A bearing (17) is fixedly sleeved on the outer wall of the drill shank (1), and an auxiliary device is provided on the bearing (17); The auxiliary device comprises a concave fixing plate (2), the concave fixing plate (2) being fixedly connected to the front surface of the bearing (17); The concave portion of the concave fixing plate (2) is plugged with a connecting plate (13) and fixedly connected via fixing threads, and the front surface of the connecting plate (13) is fixedly connected with a circular sliding sleeve (11); The auxiliary device further comprises an auxiliary rod (10), the auxiliary rod (10) being slidably sleeved in the inner wall of the circular sleeve (11), and the upper end of the auxiliary rod (10) being fixedly connected to a circular fixing plate (12); The lower end of the outer wall of the auxiliary rod (10) is fixedly sleeved with a circular sleeve (9), and the lower surface of the auxiliary rod (10) is provided with a guide hole (16).

2. A nail cutting high speed steel auger according to claim 1, Features: The auxiliary device further comprises a guide rod (7), the guide rod (7) being slidably connected to the inner wall of the guide hole (16), a second spring (15) being fixedly connected to the upper surface of one end of the guide rod (7) located inside the guide hole (16), and the second spring (15) being fixedly connected to the top inside the guide hole (16).

3. A nail cutting high speed steel auger according to claim 1, Features: The auxiliary device further comprises a circular support plate (6), wherein the circular support plate (6) is fixedly connected to the lower surface of the guide rod (7); A first spring (8) is fixedly connected to the middle of the upper surface of the circular support plate (6), and the first spring (8) is movably sleeved on the outer wall of the guide rod (7).

4. A nail cutting high speed steel auger according to claim 3, Features: The upper surface of the first spring (8) is fixedly connected to the lower surface of the circular sleeve (9), and the number of the auxiliary devices is two, and the two auxiliary devices are arranged in a mirror image.

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