Novel rapid drill bit

Abstract

The utility model provides a novel rapid drill bit which comprises a drill handle part, a main drill bit body fixedly installed on the top of the drill handle part, a containing ring fixedly installed at the tail end of the drill handle part, a reset spring embedded in the inner wall of the containing ring, a connecting block fixedly installed at the top end of the reset spring, a movable plate fixedly connected to one side of the connecting block, and an auxiliary drill bit body arranged above the movable plate. A positioning ring is fixedly installed on the drill handle part, a threaded ring is fixedly installed at the middle end of the drill handle part, and elastic pieces are arranged on the left side and the right side of the auxiliary drill bit. According to the novel rapid drill bit, the contact area between the drill bit and an object to be drilled can be increased through the main drill bit with the top provided with a protrusion and the left side and the right side asymmetrically arranged, stability and abrasion resistance are improved, friction force is increased, positioning is convenient, and slipping is not prone to occurring; and the auxiliary drill bit can be limited through the positioning ring, so that the mounting position of the auxiliary drill bit can be conveniently and quickly found.

Description

Technical Field

[0001] The utility model relates to the technical field of cutting tools, and more specifically to a novel fast drill. Background Art

[0002] A drill bit is a tool used to drill through holes or blind holes in solid materials and can expand existing holes. The drill bit is the most widely used hole processing tool. It is mainly composed of a drill shank part and a drill bit part. A spiral chip removal groove is provided on the outside of the drill bit, and a plurality of cutting blades are arranged at the front end of the drill bit. In existing high-speed drill bits, the drill bit part and the drill shank part are an integral structure. Once the front end of the drill bit part is damaged, it must be thrown away together with the drill shank, and the front end of the drill bit is exactly the most vulnerable part. Therefore, the economy of this drill bit is poor and the use cost is high. For example, a disposable high-speed drill bit (application number: 200920193598.5) disclosed in a Chinese patent document can only drill straight holes, but cannot drill step holes.

[0003] In response to the above-mentioned problems, regarding the technical problem that the existing disposable high-speed drill can only drill straight holes but cannot drill stepped holes, after a lot of searches, a Chinese utility model with application number CN205967541U was found, which provides a new type of high-speed drill, the utility model includes a drill shank and a drill head, the drill head is provided with a spiral chip groove and the lower end of the drill head is detachably connected with a plurality of blades, the drill shank is sleeved with a cylindrical auxiliary drill bit, and the auxiliary drill bit and the drill shank are detachably connected; the new type of high-speed drill has the advantage of being able to drill stepped holes, but the technical solution provided by the patent has the following problems: when the main rotary head is used alone, the waste chips during drilling will be accumulated in the thrust ring through the chip groove, and when the auxiliary drill bit needs to be installed again, it is necessary to additionally clean the waste chips remaining in the thrust ring, and the fine waste chips are hidden in the threads of the thrust ring and are difficult to clean, thus affecting the use.

[0004] Therefore the utility model proposes a novel fast drill bit. Utility Model Content

[0005] The utility model aims to solve the technical problems raised by the above-mentioned background technology and provides a new type of fast drill bit. When in use, a protrusion is provided on the top and the main drill bit is asymmetrically arranged on the left and right sides, so that the contact area between the drill bit and the object to be drilled is increased, the stability and wear resistance are increased, and the friction force is increased to facilitate positioning and not slip.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of fast drill bit, including a drill shank portion, a main drill bit is fixedly installed on the top of the drill shank portion, a storage ring is fixedly installed on the rear end of the drill shank portion, a reset spring is embedded in the inner wall of the storage ring, a connecting block is fixedly installed on the top of the reset spring, a movable plate is fixedly connected to one side of the connecting block, an auxiliary drill bit is arranged above the movable plate, a positioning ring is fixedly installed on the drill shank portion, a threaded ring is fixedly installed on the middle end of the drill shank portion, elastic sheets are arranged on the left and right sides of the auxiliary drill bit, a movable block matching the elastic sheet is arranged in the storage ring, protrusions are arranged on the upper and lower sides of the movable block, a first magnet is fixedly installed on the outer wall of the protrusion, and a second magnet matching the first magnet is arranged in the storage ring.

[0007] A further preferred solution is that a protrusion is provided on the top of the main drill bit, and the left and right sides are arranged asymmetrically.

[0008] A further preferred solution is that an annular cavity is provided in the auxiliary drill bit, and the positioning ring is located in the cavity.

[0009] A further preferred solution is that a thread matching the threaded ring is provided on the inner side of the top of the auxiliary drill bit.

[0010] A further preferred solution is that a slide rail is provided on the outer side of the auxiliary drill bit, and a slide groove matching the slide rail on the outer side of the auxiliary drill bit is provided on the inner wall of the storage ring.

[0011] A further preferred solution is that the inner wall of the receiving ring is provided with a through groove matched with the return spring and the connecting block.

[0012] A further preferred solution is that four return springs are provided and are equidistantly distributed in the receiving ring.

[0013] A further preferred solution is that a stepped hole is provided at the bottom end of the receiving ring, and the movable block protrudes into the stepped hole.

[0014] Beneficial effects:

[0015] 1. The main drill bit is provided with a protrusion on the top and asymmetrically arranged on the left and right sides, so that the contact surface between the drill bit and the object to be drilled is increased, the stability and wear resistance are increased, and the friction is increased to facilitate positioning and not easy to slip.

[0016] 2. Through the auxiliary drill bit with an annular cavity inside, and the positioning ring located in the cavity, the auxiliary drill bit can be limited by the positioning ring, so that its installation position can be quickly found. Through the auxiliary drill bit with threads matching the threaded ring on the inner side of the top, the auxiliary drill bit is threadedly connected to the drill shank to achieve convenient adjustment and disassembly. Through the auxiliary drill bit with a slide rail on the outside, and the storage ring with a slide groove matching the outer slide rail of the auxiliary drill bit on the inner wall, the lifting and lowering of the auxiliary drill bit is guided.

[0017] 3. A storage ring with a through groove matched with a reset spring and a connecting block is provided on the inner wall, and four reset springs are evenly distributed in the storage ring. The reset spring pushes the movable plate to move the auxiliary drill bit upward. When the auxiliary drill bit needs to be used, it can be stably and automatically lifted by the evenly distributed springs, connecting blocks and movable plates, thereby facilitating subsequent installation.

[0018] 4. A stepped hole is provided at the bottom, and a movable block protrudes from a storage ring in the stepped hole, which cooperates with a first magnet and a second magnet that are matched to make it possible to press the movable block to squeeze the elastic sheet, so that the auxiliary drill bit is free from restriction, and then the protrusion and the movable block are driven to reset by the direct magnetic force of the first magnet and the second magnet. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the cross-sectional structure of the auxiliary drill bit of the utility model in the retracted state.

[0020] Figure 2 It is a schematic cross-sectional structure diagram of the auxiliary drill bit of the utility model in use state.

[0021] Figure 3 It is a schematic diagram of the cross-sectional structure of the auxiliary drill bit and the storage ring of the utility model.

[0022] Figure 4 It is a schematic diagram of the top view structure of the storage ring of the utility model.

[0023] Figure 5 For the utility model Figure 3 Enlarged structural diagram at A in the middle.

[0024] Figure 1-5 In the figure: 1. Drill handle; 2. Main drill bit; 3. Storage ring; 4. Return spring; 5. Connecting block; 6. Movable plate; 7. Auxiliary drill bit; 8. Positioning ring; 9. Threaded ring; 10. Elastic sheet; 11. Movable block; 12. Protrusion; 13. First magnet; 14. Second magnet. DETAILED DESCRIPTION

[0025] The following will be combined with the attached embodiment of the utility model Figure 1-Figure 5 , clearly and completely describe the technical solutions in the embodiments of the utility model.

[0026] See also Figure 1-5In the embodiment of the utility model, a new type of fast drill bit includes a drill handle 1, a main drill bit 2 is fixedly installed on the top of the drill handle 1, a receiving ring 3 is fixedly installed on the tail end of the drill handle 1, a reset spring 4 is embedded in the inner wall of the receiving ring 3, a connecting block 5 is fixedly installed on the top of the reset spring 4, a movable plate 6 is fixedly connected to one side of the connecting block 5, an auxiliary drill bit 7 is arranged above the movable plate 6, a positioning ring 8 is fixedly installed on the drill handle 1, a threaded ring 9 is fixedly installed on the middle end of the drill handle 1, elastic sheets 10 are arranged on the left and right sides of the auxiliary drill bit 7, and an elastic sheet 10 is arranged in the receiving ring 3. The movable block 11 is matched with the plate 10, and the movable block 11 is provided with protrusions 12 on the upper and lower sides. The outer wall of the protrusion 12 is fixed with a first magnet 13, and the storage ring 3 is provided with a second magnet 14 matched with the first magnet 13. When in use, when the auxiliary drill bit 7 is not needed, the auxiliary drill bit 7 threadedly connected with the threaded ring 9 on the drill handle 1 is first unscrewed downward by rotating. At this time, the auxiliary drill bit 7 is separated from the threaded ring 9, and then the auxiliary drill bit 7 can be moved downward into the storage ring 3. When the auxiliary drill bit 7 moves downward, it will squeeze the movable plate 6. The connecting block 5 is thereby driven to squeeze the reset spring 4 to make it contract. When the auxiliary drill bit 7 is pressed downward and reaches the bottom of the receiving ring 3, the elastic sheet 10 also reaches the stepped hole provided on the side wall of the receiving ring 3 and opens outward, thereby fixing the auxiliary drill bit 7 in the receiving ring 3. When the auxiliary drill bit 7 is needed to be used in conjunction with the main drill bit 2, the receiving ring 3 provided with a stepped hole at the bottom end and the movable block 11 protrudes from the stepped hole, cooperates with the first magnet 13 and the second magnet 14 which are matched, so that the movable block 11 can be pressed from The elastic sheet 10 is squeezed to release the restriction of the auxiliary drill bit 7, and then the reset spring 4 is used to lift it up. The reset spring 4 is reset, thereby lifting the connecting block 5 and the movable plate 6 upward, and the auxiliary drill bit 7 is moved upward, so that the auxiliary drill bit 7 is conveniently rotatably installed on the threaded ring 9. At this time, the auxiliary drill bit 7 is provided with an annular cavity inside, and the positioning ring 8 is located in the cavity, so that the auxiliary drill bit 7 can be limited by the positioning ring 8, so that its installation position can be quickly found, and finally the auxiliary drill bit 7 is spirally connected to the threaded ring 9.

[0027] In the embodiment of the utility model, a protrusion is provided on the top of the main drill bit 2, and the left and right sides are asymmetrically arranged;

[0028] The auxiliary drill bit 7 is provided with an annular cavity, and the positioning ring 8 is located in the cavity. The inner side of the top of the auxiliary drill bit 7 is provided with a thread matching the threaded ring 9, and the outer side of the auxiliary drill bit 7 is provided with a slide rail. The inner wall of the storage ring 3 is provided with a slide groove matching the outer slide rail of the auxiliary drill bit 7. The main drill bit 2 with a protrusion on the top and asymmetrically arranged on the left and right sides increases the contact surface between the drill bit and the object to be punched, increases stability and wear resistance, and increases friction to facilitate positioning and prevent slipping. The auxiliary drill bit 7 with an annular cavity is provided therein, and the positioning ring 8 is located in the cavity, so that the auxiliary drill bit 7 can be limited by the positioning ring 8, which is convenient for quickly finding its installation position. The auxiliary drill bit 7 with a thread matching the threaded ring 9 on the inner side of the top is threadedly connected to the drill shank 1 to achieve the effect of convenient adjustment and disassembly. The auxiliary drill bit 7 with a slide rail on the outer side is matched with the storage ring 3 with a slide groove matching the outer slide rail of the auxiliary drill bit 7 on the inner wall, so that the lifting and lowering of the auxiliary drill bit 7 is guided.

[0029] During use, when the auxiliary drill bit 7 is not needed, the auxiliary drill bit 7 threadedly connected to the threaded ring 9 on the drill shank 1 is first unscrewed downward by rotating. At this time, the auxiliary drill bit 7 is separated from the threaded ring 9, and then the auxiliary drill bit 7 can be moved downward into the storage ring 3. When the auxiliary drill bit 7 is needed to be used in conjunction with the main drill bit 2, the auxiliary drill bit 7 with an annular cavity inside can be used, and the positioning ring 8 is located in the cavity, so that the auxiliary drill bit 7 can be limited by the positioning ring 8, which is convenient for quickly finding its installation position.

[0030] In the embodiment of the utility model, the inner wall of the storage ring 3 is provided with a through groove matched with the reset spring 4 and the connecting block 5, and four reset springs 4 are equidistantly distributed in the storage ring 3. The storage ring 3 with a through groove matched with the reset spring 4 and the connecting block 5 on the inner wall is cooperated with four reset springs 4 equidistantly distributed in the storage ring 3, so that the reset spring 4 pushes the movable plate 6 to move the auxiliary drill bit 7 upward, so that when the auxiliary drill bit 7 needs to be used, it can be stably and automatically lifted by the equidistantly distributed springs, the connecting block 5 and the movable plate 6, thereby facilitating subsequent installation.

[0031] During use, when the auxiliary drill bit 7 is not needed, the auxiliary drill bit 7 is pressed downward to squeeze the movable plate 6, thereby driving the connecting block 5 to squeeze the reset spring 4 to shrink it. When the auxiliary drill bit 7 is needed to be used in conjunction with the main drill bit 2, the reset spring 4 is reset to lift the connecting block 5 and the movable plate 6 upward, thereby moving the auxiliary drill bit 7 upward, making it convenient for the auxiliary drill bit 7 to be rotatably installed on the threaded ring 9.

[0032] In the embodiment of the utility model, a stepped hole is provided at the bottom end of the storage ring 3, and the movable block 11 protrudes from the stepped hole. The storage ring 3 having a stepped hole at the bottom end and the movable block 11 protruding from the stepped hole cooperates with the first magnet 13 and the second magnet 14 which are matched to each other, so that the elastic sheet 10 can be squeezed by pressing the movable block 11, so that the auxiliary drill bit 7 loses its restriction, and then the protrusion 12 and the movable block 11 are driven to reset by the direct magnetic force of the first magnet 13 and the second magnet 14.

[0033] During use, when the auxiliary drill bit 7 is not needed, the auxiliary drill bit 7 is pressed downward and reaches the bottom of the storage ring 3, the elastic sheet 10 also reaches the stepped hole opened on the side wall of the storage ring 3 and opens outward, thereby fixing the auxiliary drill bit 7 to the storage ring 3. When the auxiliary drill bit 7 is needed to be used in conjunction with the main drill bit 2, the storage ring 3 with a stepped hole at the bottom and a movable block 11 protruding from the stepped hole is used, and the first magnet 13 and the second magnet 14 are matched to each other, so that the elastic sheet 10 can be squeezed by pressing the movable block 11, so that the auxiliary drill bit 7 is free from restriction, and then lifted by the reset spring 4.

Claims

1. A novel high-speed drill bit, comprising a drill shank (1), characterized in that: A main drill bit (2) is fixedly mounted on the top of the drill shank (1), a receiving ring (3) is fixedly mounted on the rear end of the drill shank (1), a reset spring (4) is embedded in the inner wall of the receiving ring (3), a connecting block (5) is fixedly mounted on the top of the reset spring (4), a movable plate (6) is fixedly connected to one side of the connecting block (5), an auxiliary drill bit (7) is arranged above the movable plate (6), a positioning ring (8) is fixedly mounted on the drill shank (1), a threaded ring (9) is fixedly mounted on the middle end of the drill shank (1), elastic sheets (10) are arranged on the left and right sides of the auxiliary drill bit (7), an movable block (11) matching the elastic sheet (10) is arranged in the receiving ring (3), protrusions (12) are arranged on the upper and lower sides of the movable block (11), a first magnet (13) is fixedly mounted on the outer wall of the protrusion (12), and a second magnet (14) matching the first magnet (13) is arranged in the receiving ring (3).

2. A novel high-speed drill according to claim 1, characterized in that: The main drill bit (2) is provided with a protrusion on the top, and the left and right sides are arranged asymmetrically.

3. A novel high-speed drill according to claim 1, characterized in that: An annular cavity is provided in the auxiliary drill bit (7), and a positioning ring (8) is located in the cavity.

4. A novel high-speed drill according to claim 1, characterized in that: The inner side of the top of the auxiliary drill bit (7) is provided with a thread matching the threaded ring (9).

5. A novel high-speed drill according to claim 1, characterized in that: The auxiliary drill bit (7) is provided with a slide rail on the outside, and the inner wall of the storage ring (3) is provided with a slide groove matching the slide rail on the outside of the auxiliary drill bit (7).

6. A novel high-speed drill according to claim 1, characterized in that: The inner wall of the receiving ring (3) is provided with a through groove matched with the return spring (4) and the connecting block (5).

7. A novel high-speed drill according to claim 1, characterized in that: The return springs (4) are provided with four and are evenly distributed in the receiving ring (3).

8. A novel high-speed drill according to claim 1, characterized in that: The bottom end of the receiving ring (3) is provided with a stepped hole, and the movable block (11) is protrudingly arranged in the stepped hole.

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