Drill bit fixing mechanism of hardware drilling machine

Abstract

The utility model relates to the field of drill bit fixing mechanisms, and discloses a drill bit fixing mechanism of a hardware drilling machine, which comprises a main sleeve, a clamping mechanism is arranged in the main sleeve, the clamping mechanism comprises a clamping piece, the inner side of the clamping piece is fixedly connected with an anti-dropping bulge, and the two sides of the outer side of the clamping piece are fixedly connected with triangular sliding blocks. The outer sides of the clamping pieces are fixedly connected with sliding rods, and the lower ends of the clamping pieces are fixedly connected with outwards-protruding stepped teeth. By means of the simple hand pulling action, the drill bit can be quickly mounted or dismounted, the drill bit replacing time is shortened, and the hardware machining efficiency is improved; the clamping piece anti-disengaging protrusion is tightly meshed with the anti-disengaging groove of the drill bit handle portion, it is guaranteed that the drill bit cannot loosen or be eccentric or move in combination with the outwards-convex stepped teeth and the inwards-concave stepped tooth sleeve mechanism, and the rejection rate is reduced. The clamping piece assembly can be flexibly matched with drill bits of various diameters and handle types of different specifications, multiple different clamp devices do not need to be purchased, and cost is saved; the structural design is compact and reasonable and is not limited by space.

Description

Technical Field

[0001] This utility model belongs to the technical field of drill bit fixing mechanism, specifically, it relates to a drill bit fixing mechanism for a hardware drilling machine. Background Technology

[0002] In the hardware processing industry, drilling machines are crucial pieces of equipment, and the efficiency of drill bit assembly and disassembly, as well as the stability of their fixation, directly affect production progress and processing quality. Traditional drill bit fixing methods mostly involve using ordinary chucks with nuts or bolts for tightening.

[0003] The aforementioned methods have numerous drawbacks. For example, each time a drill bit is changed, operators must spend a significant amount of time repeatedly tightening the nut using wrenches and other tools, a cumbersome and time-consuming process. This is especially problematic in scenarios involving high-frequency drill bit use and frequent drill changes, significantly reducing overall production efficiency. Furthermore, after prolonged and frequent use, the nut is prone to loosening, leading to issues such as drill bit eccentricity and wobbling during drilling, affecting drilling accuracy, increasing the scrap rate of hardware parts, and raising production costs. In addition, in confined spaces or special working environments, the operation of conventional tools is limited, further highlighting the inconvenience of traditional fixing methods. Therefore, developing a fixing mechanism that enables quick, convenient, and stable installation and removal of drill bits is urgently needed.

[0004] To address these issues, the inventors have developed a drill bit fixing mechanism for a hardware drilling machine. Utility Model Content

[0005] To address the issue of operators spending considerable time repeatedly tightening nuts with wrenches and other tools during drill bit changes—a cumbersome and time-consuming process, especially in high-frequency drill bit production scenarios with frequent drill changes—significantly reducing overall production efficiency. Furthermore, prolonged and frequent use can cause nuts to loosen, leading to issues like drill bit eccentricity and wobbling during drilling, affecting drilling accuracy, increasing scrap rates, and raising production costs. Additionally, in confined spaces or special working environments, the limitations of conventional tools further highlight the inconvenience of traditional fixing methods. The basic concept of this utility model's technical solution is as follows:

[0006] A drill bit fixing mechanism for a hardware drilling machine includes a main sleeve. A clamping mechanism is provided inside the main sleeve. The clamping mechanism includes a clamping plate. An anti-detachment protrusion is fixedly connected to the inner side of the clamping plate, and triangular sliders are fixedly connected to both outer sides of the clamping plate. A sliding rod is fixedly connected to the outer side of the clamping plate. Furthermore, an outwardly protruding stepped tooth is fixedly connected to the lower end of the clamping plate. A telescopic rod is fixedly connected to one side of the outwardly protruding stepped tooth, and a rod groove is provided on the other side of the outwardly protruding stepped tooth. The rod groove corresponds to and is movably sleeved with the telescopic rod on the adjacent outwardly protruding stepped tooth. A small spring is sleeved and installed on the body of the telescopic rod.

[0007] As a preferred embodiment of the utility model, the barrel of the main sleeve is provided with a pressure rod sliding groove, a sliding rod hole and a square sliding groove from top to bottom, the sliding rod hole corresponds to the sliding rod and is slidably connected with the sliding rod, and the upper end of the main sleeve is fixedly connected with an arc top plate.

[0008] As a preferred embodiment of the utility model, a jack is arranged in the center of the arc top plate, the inside of the jack is movably connected with a fixed handle, the upper end of the fixed handle is fixedly connected with a drill bit body, and the lower end of the fixed handle is provided with an anti-dropping groove, the anti-dropping groove corresponds to an anti-dropping protrusion and is clamped with the anti-dropping protrusion.

[0009] As a preferred embodiment of the utility model, the lower end of the main sleeve is fixedly connected with a mounting bottom plate, the plate body of the mounting bottom plate is provided with a positioning hole, the positioning hole corresponds to an anti-skid protrusion of the power output end of the drilling machine, and the center of the mounting bottom plate is provided with a bolt hole, the inside of the bolt hole is movably connected with a fixed bolt, and the fixed bolt corresponds to a mounting threaded hole of the power output end of the drilling machine.

[0010] As a preferred embodiment of the utility model, the outer periphery of the main sleeve is movably connected with a sliding sleeve, the outside of the sliding sleeve is provided with a plurality of anti-skid lines, the inside of the sliding sleeve is fixedly connected with a pressure rod at the upper end, the pressure rod corresponds to the pressure rod sliding groove and is slidably connected with the pressure rod sliding groove, and the end of the pressure rod corresponds to the hypotenuse of the triangular sliding block and is slidably pressed.

[0011] As a preferred embodiment of the utility model, the inside of the lower end of the sliding sleeve is fixedly connected with a connecting rod, one end of the inner side of the connecting rod is fixedly connected with an inner concave stepped tooth sleeve, the inner tooth pattern of the inner concave stepped tooth sleeve corresponds to an outer convex stepped tooth and is clamped with the outer convex stepped tooth, the lower end of the inner concave stepped tooth sleeve is fixedly connected with a large spring, and the lower end of the large spring is fixedly connected to the upper surface of the mounting bottom plate.

[0012] Compared with the prior art, the utility model has the following beneficial effects:

[0013] The utility model discloses discard traditional complex tool or complicated operation, with simple hand pull movement, can complete the installation or disassembly of drill bit in a few seconds, greatly shorten the time of changing drill, especially suitable in the scene of high frequency use drill production, frequent drill changing, significantly improve the hardware processing efficiency; The anti-drop boss on the clamping piece and the anti-drop groove of the drill main body handle part are closely engaged, combined with the outer convex step tooth and the inner concave step tooth sleeve mechanism, ensure that the drill does not appear the slightest looseness, eccentricity or displacement when high-speed rotation drilling, reduce the waste rate; By adjusting the opening diameter of the clamping piece assembly, can flexible adaptation of multiple diameter, different specifications of handle type drill, satisfy the diversification demand of hardware processing, need not purchase multiple different fixture equipment, save the cost; Compact and reasonable structure design, whether in the open workshop or narrow processing station, the operator can easily operate, not restricted by space, reduce the labor intensity, improve the working comfort.

[0014] The specific embodiments of the utility model will be described in further detail below in combination with the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0015] In the drawings:

[0016] Figure 1 It is a kind of overall three-dimensional front view schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0017] Figure 2 It is a kind of overall three-dimensional bottom view schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0018] Figure 3 It is a kind of longitudinal section schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0019] Figure 4 It is a kind of external structure exploded schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0020] Figure 5 It is a kind of internal structure enlarged schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0021] Figure 6 It is a kind of internal structure section schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0022] Figure 7 It is a kind of slide sleeve internal structure plan view schematic diagram of the drill bit fixing mechanism of hardware drilling machine;

[0023] Figure 8 It is a kind of main sleeve internal structure plan view schematic diagram of the drill bit fixing mechanism of hardware drilling machine.

[0024] In the figure: 1, drill bit main body; 2, fixed handle; 3, arc top plate; 4, main sleeve; 5, sliding sleeve; 6, non-slip pattern; 7, mounting bottom plate; 8, fixing bolt; 9, positioning hole; 10, clamping piece; 11, triangular slider; 12, sliding rod; 13, sliding rod hole; 14, outer convex stepped teeth; 15, connecting rod; 16, anti-dropping groove; 17, anti-dropping protrusion; 18, telescopic rod; 19, small spring; 20, rod groove; 21, pressure rod; 22, pressure rod sliding groove; 23, square sliding groove; 24, inner concave stepped teeth sleeve; 25, large spring. DETAILED DESCRIPTION

[0025] To make the purpose, technical scheme and advantages of the utility model embodiment clearer, the technical scheme in the embodiment will be clearly and completely described below in combination with the drawings in the utility model embodiment, and the following embodiments are used to illustrate the utility model.

[0026] As shown in Figures 1 to 8 A drill bit fixing mechanism of a hardware drilling machine, including main sleeve 4, the inside of main sleeve 4 is provided with clamping mechanism, clamping mechanism includes clamping piece 10, the inner side of clamping piece 10 is fixedly connected with anti-dropping protrusion 17, and the outer side of clamping piece 10 is fixedly connected with triangular slider 11 on both sides, and the outer side of clamping piece 10 is fixedly connected with sliding rod 12, furthermore, the lower end of clamping piece 10 is fixedly connected with outer convex stepped teeth 14, one side of outer convex stepped teeth 14 is fixedly connected with telescopic rod 18, and the other side of outer convex stepped teeth 14 is provided with rod groove 20, rod groove 20 corresponds with telescopic rod 18 on the adjacent outer convex stepped teeth 14 and is movably sleeved with it, and small spring 19 is sleeved and installed on the rod body of telescopic rod 18;The cylinder of main sleeve 4 is provided with pressure rod sliding groove 22, sliding rod hole 13 and square sliding groove 23 from top to bottom respectively, sliding rod hole 13 corresponds with sliding rod 12 and is slidably sleeved with it, and the upper end of main sleeve 4 is fixedly connected with arc top plate 3;The center position of arc top plate 3 is provided with insertion hole, the insertion hole is movably sleeved with fixed handle 2, the upper end of fixed handle 2 is fixedly connected with drill bit main body 1, and the lower end of fixed handle 2 is provided with anti-dropping groove 16, anti-dropping groove 16 corresponds with anti-dropping protrusion 17 and is clamped with it.

[0027] In the present setting, anti-dropping protrusion 17 on clamping piece 10 is tightly engaged with anti-dropping groove 16 of drill bit main body 1 handle, combined with outer convex stepped teeth 14 and inner concave stepped teeth sleeve 24, to ensure that the drill bit does not appear the slightest looseness, eccentricity or displacement when high-speed rotating drilling, to ensure that the drilling precision is controlled within a very small tolerance range, effectively reducing the scrap rate.

[0028] As shown in Figures 1 to 8As shown, in a specific embodiment, the lower end of the main sleeve 4 is fixedly connected to a mounting base plate 7. The mounting base plate 7 has a positioning hole 9, which corresponds to the anti-slip protrusion of the power output end of the drilling machine. A bolt hole is provided at the center of the mounting base plate 7, and a fixing bolt 8 is installed in the bolt hole. The fixing bolt 8 corresponds to the mounting thread hole of the power output end of the drilling machine.

[0029] In this setup, by adjusting the opening diameter of the clamping plate 10 component, it can flexibly adapt to drill bits of various diameters and different specifications, meeting the diverse needs of hardware processing, eliminating the need to purchase multiple different clamping equipment, and saving costs.

[0030] like Figures 1 to 8 As shown, in a specific embodiment, a sliding sleeve 5 is movably sleeved around the main sleeve 4. The outer side of the sliding sleeve 5 is provided with several anti-slip textures 6, and a pressure rod 21 is fixedly connected to the upper inner end of the sliding sleeve 5. The pressure rod 21 corresponds to the pressure rod groove 22 and is slidably sleeved with it. The end of the pressure rod 21 corresponds to the inclined side of the triangular slider 11 and is slidably pressed with it.

[0031] In this design, the present invention abandons traditional complex tools or complicated operations. With a simple hand pull action, the installation or removal of the drill bit can be completed in a few seconds, which greatly shortens the drill change time. It is especially suitable for use in scenarios where drill bits are used frequently and drill changes are frequent, and significantly improves the processing efficiency of hardware parts.

[0032] like Figures 1 to 8 As shown, in a specific embodiment, a connecting rod 15 is fixedly connected to the lower inner end of the sliding sleeve 5, and a concave stepped toothed sleeve 24 is fixedly connected to one inner end of the connecting rod 15. The internal teeth of the concave stepped toothed sleeve 24 correspond to and engage with the convex stepped teeth 14. A large spring 25 is fixedly connected to the lower end of the concave stepped toothed sleeve 24, and the lower end of the large spring 25 is fixedly connected to the upper surface of the mounting base plate 7.

[0033] This setup features a compact and rational structural design, allowing operators to work easily in both open workshops and narrow processing stations without spatial limitations, reducing labor intensity and improving work comfort.

[0034] The implementation principle of the drill bit fixing mechanism of a hardware drilling machine in this embodiment is as follows:

[0035] The utility model discloses discard traditional complex tool or complicated operation, with simple hand pull movement, can complete the installation or disassembly of drill bit in a few seconds, greatly shorten the time of changing drill, especially suitable in the scene of high frequency use drill production, frequent drill, significantly improve the hardware machining efficiency;The anti-drop projection 17 on the clamping piece 10 and the anti-drop groove 16 of the handle of the drill body 1 are closely engaged, combined with the outer convex step teeth 14 and the inner concave step teeth sleeve 24, ensure that the drill does not appear a little looseness, eccentricity or displacement when high-speed rotation drilling, guarantee the drilling accuracy control in the extremely small tolerance range, effectively reduce the scrap rate;By adjusting the opening diameter of the clamping piece 10 assembly, can be flexible to adapt to a variety of diameter, different specifications of handle type drill, satisfy the diversification demand of hardware machining, need not purchase many different fixture equipment, save the cost;Compact and reasonable structure design, whether in the open workshop or narrow machining station, the operator can easily operate, not restricted by space, reduce the labor intensity, improve the working comfort.

Claims

1. A drill fixing mechanism of a hardware drill, comprising a main sleeve (4), characterized in that: the inside of the main sleeve (4) is provided with a clamping mechanism, the clamping mechanism comprises a clamping piece (10), the inner side of the clamping piece (10) is fixedly connected with an anti-off convex (17), the outer side of the clamping piece (10) is fixedly connected with a triangular slide block (11) on both sides, and the outer side of the clamping piece (10) is fixedly connected with a slide rod (12), further, the lower end of the clamping piece (10) is fixedly connected with an outer convex stepped tooth (14), one side of the outer convex stepped tooth (14) is fixedly connected with an extension rod (18), the other side of the outer convex stepped tooth (14) is provided with a rod groove (20), the rod groove (20) corresponds to the extension rod (18) on the adjacent outer convex stepped tooth (14) and is movably sleeved with the extension rod (18), and a small spring (19) is sleeved and mounted on the rod body of the extension rod (18). A pressure rod sliding groove (22), a slide rod hole (13) and a square sliding groove (23) are respectively formed on the cylinder of the main sleeve (4) from top to bottom, the slide rod hole (13) corresponds to the slide rod (12) and is slidably sleeved with the slide rod (12), and the upper end of the main sleeve (4) is fixedly connected with a circular arc top plate (3).

2. The drill bit fixing mechanism of a hardware drilling machine according to claim 1, wherein, A plug hole is formed at the center position of the circular arc top plate (3), a fixed handle (2) is movably sleeved in the plug hole, a drill body (1) is fixedly connected to the upper end of the fixed handle (2), and an anti-off groove (16) is formed at the lower end of the fixed handle (2), the anti-off groove (16) corresponds to the anti-off convex (17) and is clamped with the anti-off convex (17).

3. The drill bit fixing mechanism of a hardware drilling machine according to claim 2, wherein, The lower end of the main sleeve (4) is fixedly connected with a mounting bottom plate (7), a positioning hole (9) is formed on the plate body of the mounting bottom plate (7), the positioning hole (9) corresponds to the anti-slip convex of the power output end of the drill, a bolt hole is formed at the center position of the mounting bottom plate (7), a fixing bolt (8) is sleeved and mounted in the bolt hole, and the fixing bolt (8) corresponds to the mounting threaded hole of the power output end of the drill.

4. The drill bit fixing mechanism of a hardware drilling machine according to claim 2, wherein A sliding sleeve (5) is movably sleeved on the periphery of the main sleeve (4), a plurality of anti-slip patterns (6) are formed on the outside of the sliding sleeve (5), a pressure rod (21) is fixedly connected to the inside upper end of the sliding sleeve (5), the pressure rod (21) corresponds to the pressure rod sliding groove (22) and is slidably sleeved with the pressure rod sliding groove (22), and the end of the pressure rod (21) corresponds to the hypotenuse of the triangular slide block (11) and is slidably pressed with the hypotenuse.

5. The drill bit fixing mechanism of a hardware drilling machine according to claim 4, wherein, A connecting rod (15) is fixedly connected to the inside lower end of the sliding sleeve (5), an inner concave stepped tooth sleeve (24) is fixedly connected to the inside one end of the connecting rod (15), the inside tooth pattern of the inner concave stepped tooth sleeve (24) corresponds to the outer convex stepped tooth (14) and is clamped with the outer convex stepped tooth (14), a large spring (25) is fixedly connected to the lower end of the inner concave stepped tooth sleeve (24), and the lower end of the large spring (25) is fixedly connected to the upper surface of the mounting bottom plate (7).

6. The drill bit securing mechanism of a hardware drilling machine according to claim 5, wherein, ​

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