High-speed steel shrinkage handle twist drill

Abstract

The utility model discloses a high-speed steel shrinkage handle twist drill which comprises a twist drill bit, a drill handle is arranged at the upper end of the twist drill bit, and a limiting ring is installed on the outer side of the twist drill bit. An electromagnet is mounted at the top end in the drill handle; a spring is connected to the interior of the upper end of the auger bit, a moving rod is connected to the end of the spring, a permanent magnet is installed at the upper end of the moving rod, an adjusting rod is hinged to the lower end of the moving rod, and a positioning rod is hinged to the lower end of the adjusting rod. When the high-speed steel shrinkage handle twist drill or twist drill bit is stuck, the pressure of the pressure sensor is increased and reaches the limit, a signal can be transmitted to the controller, the controller controls the electromagnet to work, the electromagnet and the permanent magnet which are distributed in a heteropolar mode attract each other, the moving rod is driven to move upwards, and the adjusting rod is controlled to pull the positioning rod to move out of the positioning hole. When the drill handle and the auger bit are unlocked, the drill handle and the auger bit can rotate relative to each other, and breakage caused by continuous stress of the auger bit is avoided.

Description

Technical Field

[0001] This utility model relates to the field of twist drill technology, specifically a high-speed steel reduced shank twist drill. Background Technology

[0002] High-speed steel twist drills with reduced shank are a type of twist drill that can be used for drilling various materials, such as metal and wood. In metalworking, they can drill precise holes in various metal parts, and in woodworking, they can be used for drilling operations when making furniture, wooden products, etc.

[0003] When high-speed steel twist drills with reduced shank are used for drilling operations, if the drilling components are too hard, the high-speed steel twist drill may get stuck on the drilling components, which can easily lead to breakage of the high-speed steel twist drill, affecting its service life. Furthermore, it is difficult to detect the situation in time when the high-speed steel twist drill gets stuck. Therefore, we have proposed a high-speed steel twist drill with reduced shank to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of this utility model is to provide a high-speed steel reduced shank twist drill to solve the problem mentioned in the background art of the current high-speed steel reduced shank twist drills on the market that are prone to breakage when jammed.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a high-speed steel twist drill with a reduced shank, comprising a twist drill bit, wherein a drill shank is provided at the upper end of the twist drill bit, and a limit ring is installed on the outer side of the twist drill bit;

[0006] An electromagnet is installed at the top of the inside of the drill shank;

[0007] A spring is internally connected to the upper end of the twist drill bit, and a moving rod is connected to the end of the spring. A permanent magnet is installed at the upper end of the moving rod, and an adjusting rod is hinged to the lower end of the moving rod. A positioning rod is hinged to the lower end of the adjusting rod.

[0008] The drill shank has a positioning hole on its inner wall, and a pressure sensor is connected to the inner wall of the positioning hole. A battery, an alarm light, and a controller are installed on the outer side of the drill shank.

[0009] Preferably, the twist drill bit forms a rotating structure with the drill shank via a limiting ring, and the upper end of the twist drill bit extends into the drill shank.

[0010] Preferably, the electromagnet, pressure sensor, alarm light, and controller are all electrically connected to the battery, the output terminal of the pressure sensor is connected to the input terminal of the controller, and the output terminal of the controller is connected to the input terminals of the alarm light and the electromagnet.

[0011] Preferably, the moving rod has a "dry" - shaped structure, and the moving rod slidably penetrates through the upper end of the twist drill bit.

[0012] Preferably, the position of the permanent magnet corresponds to the position of the electromagnet, and the permanent magnet and the electromagnet are magnets with opposite polarities.

[0013] Preferably, the positioning rod and the positioning hole are engaged with each other, and both the positioning rod and the positioning hole are distributed at equal angles with respect to the longitudinal center line of the twist drill bit.

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

[0015] (1) For this high - speed steel reduced - shank twist drill, when the twist drill bit gets stuck, the pressure sensor senses an increase in pressure. When the pressure reaches the limit, it can transmit a signal to the controller. The controller controls the electromagnet to work. The electromagnet and the permanent magnet with opposite polarities attract each other, driving the moving rod to move upward, controlling the adjusting rod to pull the positioning rod out of the positioning hole, releasing the locking between the drill shank and the twist drill bit, and enabling the drill shank and the twist drill bit to rotate relative to each other, thus preventing the twist drill bit from being continuously stressed and causing fracture.

[0016] (2) For this high - speed steel reduced - shank twist drill, the controller can control the alarm lamp to work. The alarm lamp flashes to remind the staff that the twist drill bit is stuck, and the staff can operate in a timely manner to ensure the smooth operation of the twist drill. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic diagram of the overall structure of the present utility model;

[0018] Figure 2 is a schematic diagram of the bottom view structure of the present utility model;

[0019] Figure 3 is a schematic diagram of the sectional structure of the present utility model;

[0020] Figure 4 is a schematic diagram of the sectional structure of the twist drill bit of the present utility model;

[0021] Figure 5 is a schematic diagram of the sectional structure of the drill shank of the present utility model.

[0022] In the figure: 1, twist drill bit; 2, drill shank; 3, limiting ring; 4, electromagnet; 5, spring; 6, moving rod; 7, permanent magnet; 8, adjusting rod; 9, positioning rod; 10, positioning hole; 11, pressure sensor; 12, storage battery; 13, alarm lamp; 14, controller. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] Please refer to Figures 1-5 , the present utility model provides the following technical solution: A high-speed steel reduced shank twist drill, including a twist drill bit 1, a drill shank 2 is provided at the upper end of the twist drill bit 1, and a limiting ring 3 is installed on the outer side of the twist drill bit 1;

[0025] Further, the twist drill bit 1 and the drill shank 2 form a rotating structure through the limiting ring 3. The upper end of the twist drill bit 1 extends into the drill shank 2. When the twist drill bit 1 and the drill shank 2 are unlocked from each other, they can rotate relative to each other, avoiding the twist drill bit 1 from jamming and breaking;

[0026] An electromagnet 4 is installed at the top end inside the drill shank 2; a spring 5 is connected inside the upper end of the twist drill bit 1, an end of the spring 5 is connected to a moving rod 6, a permanent magnet 7 is installed at the upper end of the moving rod 6, a lower end of the moving rod 6 is hinged to an adjusting rod 8, and a lower end of the adjusting rod 8 is hinged to a positioning rod 9;

[0027] Further, the moving rod 6 is in a "dry" shape structure, and the moving rod 6 slides through the upper end of the twist drill bit 1, enabling the smooth movement of the moving rod 6, thereby driving the adjusting rod 8 to带动 the positioning rod 9 to move and adjusting the position of the positioning rod 9;

[0028] Further, the position of the permanent magnet 7 is set corresponding to the position of the electromagnet 4, and the permanent magnet 7 and the electromagnet 4 are magnets with opposite poles. Utilizing the attraction between the magnets, the moving rod 6 is controlled to move upward, and thus the adjusting rod 8 can be controlled to pull the positioning rod 9 out of the positioning hole 10 to release the locking of the twist drill bit 1;

[0029] A positioning hole 10 is opened on the inner wall of the drill shank 2, a pressure sensor 11 is connected to the inner wall of the positioning hole 10, and a storage battery 12, an alarm lamp 13 and a controller 14 are installed on the outer side of the drill shank 2;

[0030] Further, the electromagnet 4, the pressure sensor 11, the alarm lamp 13 and the controller 14 are all electrically connected to the storage battery 12. The output end of the pressure sensor 11 is connected to the input end of the controller 14, and the output end of the controller 14 is connected to the input ends of the alarm lamp 13 and the electromagnet 4;

[0031] Furthermore, the positioning rod 9 and the positioning hole 10 engage with each other. The positioning rod 9 and the positioning hole 10 are both distributed at equal angles about the longitudinal center line of the twist drill bit 1, which can fix the twist drill bit 1 and the drill shank 2 to each other.

[0032] Specifically, when using this high-speed steel twist drill with a reduced shank, the drill shank 2 is mounted on the drive assembly. The drive assembly controls the rotation of the drill shank 2, thereby controlling the rotation of the twist drill bit 1. The twist drill bit 1 performs drilling operations on the component. If the twist drill bit 1 gets stuck on the component being drilled, the drill shank 2 continues to rotate under the drive of the drive assembly. At this time, the pressure force exerted by the positioning rod 9 on the pressure sensor 11 gradually increases. When the pressure of the pressure sensor 11 reaches its limit, it can transmit a signal to the controller 14. The controller 14 controls the electromagnet 4 and the alarm light 13 to work. The alarm light 13 flashes to remind the operator that the twist drill bit 1 is stuck. Meanwhile, the electromagnet 4 and the permanent magnet 7, which have opposite poles, attract each other, controlling the moving rod 6 to move upward. The moving rod 6 compresses and stores force on the spring 5, while simultaneously pulling the moving rod 6. The adjusting rod 8, hinged at the lower end, rotates, pulling the positioning rod 9, hinged at the end, to move out of the positioning hole 10. This releases the lock between the drill shank 2 and the twist drill bit 1. At this time, the twist drill bit 1 can rotate on the drill shank 2 through the limiting ring 3. Therefore, when the twist drill bit 1 gets stuck, it is prevented from continuing to be stressed and breaking. When the stuck situation is resolved by the operator, the electromagnet 4 is de-energized and stops working. The spring 5 can then control the moving rod 6 to move down and reset, thereby pushing the adjusting rod 8 to rotate in the opposite direction. This, in turn, pushes the positioning rod 9 to reset and move, locking the positioning rod 9 into the corresponding positioning hole 10. This locks the twist drill bit 1 and the drill shank 2, allowing the twist drill bit 1 to be driven smoothly for drilling. The contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0033] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A high-speed steel reduced-shank twist drill, comprising a twist drill bit (1), characterized in that: A drill shank (2) is provided at the upper end of the twist drill (1), and a limiting ring (3) is installed on the outer side of the twist drill (1). An electromagnet (4) is installed at the top end inside the drill shank (2). A spring (5) is connected inside the upper end of the twist drill (1), the end of the spring (5) is connected to a moving rod (6), a permanent magnet (7) is installed at the upper end of the moving rod (6), the lower end of the moving rod (6) is hinged to an adjusting rod (8), and the lower end of the adjusting rod (8) is hinged to a positioning rod (9). A positioning hole (10) is formed on the inner wall of the drill shank (2), a pressure sensor (11) is connected to the inner wall of the positioning hole (10), and a storage battery (12), an alarm lamp (13) and a controller (14) are installed on the outer side of the drill shank (2).

2. The high-speed steel reduced-shank twist drill according to claim 1, characterized in that: The twist drill (1) and the drill shank (2) form a rotating structure through the limiting ring (3), and the upper end of the twist drill (1) extends into the drill shank (2).

3. A high-speed steel reduced-shank twist drill according to claim 1, characterized in that: The electromagnet (4), the pressure sensor (11), the alarm lamp (13) and the controller (14) are all electrically connected to the storage battery (12), the output end of the pressure sensor (11) is connected to the input end of the controller (14), and the output end of the controller (14) is connected to the input ends of the alarm lamp (13) and the electromagnet (4).

4. A high-speed steel reduced-shank twist drill according to claim 1, characterized in that: The moving rod (6) is in a "dry" - shaped structure, and the moving rod (6) slides through the upper end of the twist drill (1).

5. A high-speed steel reduced-shank twist drill according to claim 1, characterized in that: The position of the permanent magnet (7) is arranged corresponding to the position of the electromagnet (4), and the permanent magnet (7) and the electromagnet (4) are magnets with opposite poles.

6. A high-speed steel reduced-shank twist drill according to claim 1, characterized in that: The positioning rod (9) is engaged with the positioning hole (10), and both the positioning rod (9) and the positioning hole (10) are equally - angularly distributed about the longitudinal center line of the twist drill (1).

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