Quick dismounting and mounting device for radial drilling machine drill bit

Abstract

The quick dismounting and mounting device comprises a sliding sleeve, a fixed sleeve, a transverse rod and an elastic reset piece, the sliding sleeve is slidably installed on a drilling machine main shaft, the drilling machine main shaft is slidably installed on an installation base of a drilling machine, the fixed sleeve is fixedly installed on the drilling machine main shaft, and the elastic reset piece is arranged between the sliding sleeve and the fixed sleeve. A round hole is formed in the side wall of the sliding sleeve, a long-strip-shaped hole is formed in the side wall of the drilling machine main shaft, the transverse rod is transversely inserted in the round hole and the long-strip-shaped hole, the long-strip-shaped hole extends in the height direction of the drilling machine main shaft, and a drill bit is installed on the drilling machine main shaft and located below the transverse rod. After a workpiece is machined, the operating handle on the drilling machine is operated, the drilling machine spindle, the drill bit and the fixed sleeve move upwards, the transverse rod on the sliding sleeve exerts downward force on the drill bit, the drill bit is detached from the drilling machine spindle, the detaching process is simple and rapid, time and labor are saved, the drill bit replacement difficulty is reduced, and the workpiece machining efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of mechanical processing, and in particular to a quick disassembly and assembly device for a drill bit of a radial drilling machine. Background Art

[0002] A radial drill is a common metalworking drilling machine, which is mainly used for drilling metal materials. In a radial drill, the drill bit is a key component for performing drilling work. Depending on the size of the hole to be drilled, drill bits of different diameters need to be replaced. In the prior art, when removing the drill bit, one needs to hold a hammer in one hand and a wedge in the other hand, and use the wedge to continuously impact the drill bit through the hole on the side wall of the drill clamp to remove the drill bit. In order to avoid the drill bit from being damaged by collision when it falls, another person is required to hold the drill bit in his hand during disassembly. The entire disassembly process is cumbersome, time-consuming and labor-intensive, which affects the processing efficiency of the workpiece. Summary of the invention

[0003] In view of the existing technical problems, the present invention provides a quick disassembly and assembly device for a drill bit of a radial drilling machine.

[0004] The technical solution of the present invention for solving the above-mentioned technical problems is as follows: A quick disassembly and assembly device for a radial drilling machine drill bit, comprising a sliding sleeve, a fixed sleeve, a cross bar and an elastic reset part, the sliding sleeve can be slidably installed on the drilling machine spindle, the drilling machine spindle can be slidably installed on the mounting seat of the drilling machine, the fixed sleeve is fixedly installed on the drilling machine spindle, an elastic reset part is arranged between the sliding sleeve and the fixed sleeve, a circular hole is arranged on the side wall of the sliding sleeve, a long hole is arranged on the side wall of the drilling machine spindle, the cross bar is transversely inserted into the circular hole and the long hole, the long hole extends along the height direction of the drilling machine spindle, a drill bit is installed on the drilling machine spindle, and the drill bit is located below the cross bar.

[0005] On the basis of the above technical solution, the present invention can also be improved as follows:

[0006] Preferably, it further comprises a protective sleeve, wherein a limiting platform is provided on the sliding sleeve, the upper end of the protective sleeve is mounted on the limiting platform, and the lower end of the protective sleeve is slidably sleeved on the fixed sleeve.

[0007] Preferably, it further comprises a plurality of guide rods, wherein the plurality of guide rods are evenly arranged along the circumference of the drilling machine main shaft, the upper ends of the guide rods are mounted on the sliding sleeve, and the lower ends of the guide rods are inserted on the fixed sleeve.

[0008] Preferably, there are a plurality of elastic reset members, and the plurality of elastic reset members are evenly arranged along the circumference of the drilling machine spindle.

[0009] Preferably, the elastic return member is a spring.

[0010] Preferably, three elastic reset members are provided, an upper positioning hole is provided on the sliding sleeve, a lower positioning hole is provided on the fixed sleeve, the upper end of the elastic reset member is located in the upper positioning hole, and the lower end is located in the lower positioning hole.

[0011] Preferably, three guide rods are provided, and the guide rods and the elastic reset members are spaced apart from each other.

[0012] Preferably, a plurality of mounting holes are provided in the circumference of the fixed sleeve, locking screws are installed on the mounting holes, and the fixed sleeve is fixed to the main shaft of the drilling machine through the locking screws.

[0013] Preferably, a tapered hole is provided on the main shaft of the drilling machine, and the drill bit is installed in the tapered hole.

[0014] Preferably, it further comprises a reducing sleeve, and the drill bit is installed on the main shaft of the drilling machine through the reducing sleeve.

[0015] The beneficial effect of the present invention is that after the workpiece is processed, the operating handle on the drilling machine is operated to move the drilling machine spindle, the drill bit and the fixed sleeve upward, the fixed sleeve compresses the elastic reset part to deform, and the elastic reset part applies an upward force to the sliding sleeve to move the sliding sleeve upward. When the sliding sleeve is against the mounting seat, the drilling machine spindle and the drill bit continue to move upward, and the cross bar on the sliding sleeve applies a downward force to the drill bit, so that the drill bit can be removed from the drilling machine spindle. The disassembly process is simple and quick, which saves time and effort, reduces the difficulty of drill bit replacement, and improves the workpiece processing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic structural diagram of the present invention viewed from the cross bar;

[0017] Figure 2 It is a schematic structural diagram of the present invention viewed from the guide rod;

[0018] Figure 3 It is a schematic diagram of the structure of the present invention that is thrown from the elastic reset button;

[0019] Figure 4 It is a structural schematic diagram of the sliding sleeve of the present invention;

[0020] Figure 5 It is a structural schematic diagram of the fixed sleeve of the present invention.

[0021] The accompanying drawings are marked as follows: 1. Sliding sleeve; 1.1. Upper positioning hole; 1.2. Upper guide hole; 1.3. Round hole; 2. Fixed sleeve; 2.1. Lower positioning hole; 2.2. Lower guide hole; 2.3. Mounting hole; 3. Cross bar; 4. Guide rod; 5. Locking screw; 6. Elastic reset part; 7. Drilling machine spindle; 8. Drill bit; 9. Mounting seat; 10. Protective cover; 11. Long hole. DETAILED DESCRIPTION

[0022] The principles and features of the present invention are described below in conjunction with the accompanying drawings. The examples given are only used to explain the present invention and are not used to limit the scope of the present invention.

[0023] like Figures 1 to 5 As shown, the present invention discloses a quick disassembly and assembly device for a radial drilling machine drill bit, comprising a sliding sleeve 1, a fixed sleeve 2, a cross bar 3 and an elastic reset member 6, the sliding sleeve 1 can be slidably mounted on the drilling machine spindle 7, the drilling machine spindle 7 can be slidably mounted on the drilling machine mounting seat 9, the fixed sleeve 2 is fixedly mounted on the drilling machine spindle 7, an elastic reset member 6 is arranged between the sliding sleeve 1 and the fixed sleeve 2, a circular hole 1.3 is arranged on the side wall of the sliding sleeve 1, a long hole 11 is arranged on the side wall of the drilling machine spindle 7, the cross bar 3 is transversely inserted into the circular hole 1.3 and the long hole 11, the long hole 11 extends along the height direction of the drilling machine spindle 7, the long hole 11 is a rectangular hole or an elliptical hole, a drill bit 8 is installed on the drilling machine spindle 7, and the drill bit 8 is located below the cross bar 3. Specifically, a tapered hole is provided on the drilling machine spindle 7, and the drill bit 8 is installed in the tapered hole. The diameter of the tapered hole gradually decreases from bottom to top, ensuring the firmness of the installation of the drill bit 8. When the drilling machine spindle 7 drives the drill bit 8 to move upward, the cross bar 3 moves along the long hole 11, thereby realizing the removal of the drill bit 8 from the drilling machine spindle 7. The overall disassembly is simple and easy to operate.

[0024] The quick disassembly and assembly device also includes a protective sleeve 10. A limit platform is provided on the sliding sleeve 1. The upper end of the protective sleeve 10 is mounted on the limit platform, and the lower end is slidably mounted on the fixed sleeve 2. The protective sleeve 10 protects the elastic reset member 6 to prevent foreign matter from entering the elastic reset member 6 and causing it to fail to work normally.

[0025] Furthermore, in order to ensure the secure installation of the protective sleeve 10 , the protective sleeve 10 is installed on the sliding sleeve 1 through threads.

[0026] The quick disassembly and assembly device further includes a plurality of guide rods 4, which are evenly arranged along the circumference of the drilling machine main shaft 7, the upper ends of the guide rods 4 are mounted on the sliding sleeve 1, and the lower ends are inserted on the fixed sleeve 2. The guide rods 4 guide the sliding sleeve 1 and the fixed sleeve 2, ensuring the stability of the movement of the sliding sleeve 1 and the fixed sleeve 2 and avoiding deflection.

[0027] Specifically, there are three guide rods 4, the sliding sleeve 1 is provided with three upper guide holes 1.2, and the fixed sleeve 2 is provided with three corresponding lower guide holes 2.2. The upper end of the guide rod 4 is installed in the upper guide hole 1.2, and the lower end is slidably installed in the lower guide hole 2.2, which can not only play a guiding role, but also ensure that the sliding sleeve 1 and the fixed sleeve 2 can move relative to each other.

[0028] There are multiple elastic reset members 6, and the multiple elastic reset members 6 are evenly arranged along the circumference of the drilling machine main shaft 7. It is ensured that the elastic reset member 6 applies a uniform force to the sliding sleeve 1 to prevent the sliding sleeve 1 from tilting, and ensure that the sliding sleeve 1 can move normally, thereby ensuring that the drill bit 8 can be removed normally.

[0029] In this embodiment, specifically, the elastic reset member 6 is a spring, and three elastic reset members 6 are provided. An upper positioning hole 1.1 is provided on the sliding sleeve 1, and a lower positioning hole 2.1 is provided on the fixed sleeve 2. The upper end of the elastic reset member 6 is located in the upper positioning hole 1.1, and the lower end is located in the lower positioning hole 2.1. The position of the elastic reset member 6 is limited by the upper positioning hole 1.1 and the lower positioning hole 2.1 to avoid deviation, and ensure that the elastic reset member 6 can be normally extended and retracted.

[0030] Furthermore, the guide rod 4 and the elastic reset member 6 are arranged at intervals, which can improve the overall stability, make the structure compact, and reduce the occupied area.

[0031] In this embodiment, a plurality of mounting holes 2.3 are provided in the circumference of the fixed sleeve 2, and the mounting holes 2.3 are arranged along the radial direction of the fixed sleeve 2. A locking screw 5 is installed on the mounting hole 2. The fixed sleeve 2 is fixed to the drilling machine spindle 7 by the locking screw 5. Furthermore, the mounting hole 2.3 is a countersunk hole, so that the end of the locking screw 5 is located in the countersunk hole, ensuring the flatness of the surface of the fixed sleeve 2 and ensuring that the protective sleeve 10 can move normally on the outside of the fixed sleeve 2.

[0032] The quick disassembly and assembly device also includes a reducing sleeve, through which the drill bit 8 is installed on the drilling machine spindle 7. By adopting the reducing sleeve, the installation requirements of drill bits 8 of different diameters can be met, the scope of use is increased, and the processing cost is reduced.

[0033] The use process of this quick disassembly and assembly device is as follows:

[0034] Insert the drill bit 8 into the main shaft 7 of the drilling machine, operate the operating handle on the drilling machine, so that the main shaft 7 of the drilling machine drives the drill bit 8 to move downward and rotate, so as to drill a hole on the workpiece;

[0035] When the drilling is completed, the operating handle is moved in the opposite direction or rotated, thereby driving the drilling machine spindle 7, the drill bit 8 and the fixed sleeve 2 to move upward, the fixed sleeve 2 compresses the elastic reset member 6 to deform, and the elastic reset member 6 applies an upward force to the sliding sleeve 1 to move the sliding sleeve 1 upward. When the sliding sleeve 1 is against the mounting seat 9 on the drilling machine, the drilling machine spindle 7 and the drill bit 8 continue to move upward. When the cross bar 3 contacts the drill bit 8, the cross bar 3 applies a downward force to the drill bit 8 to remove the drill bit 8 from the drilling machine spindle 7. The operator can operate the operating handle with one hand and grab the drill bit with the other hand. The disassembly process is simple and quick, and can be completed by one operator, saving time and effort, reducing the difficulty of replacing the drill bit 8, and improving the workpiece processing efficiency.

[0036] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A quick disassembly and assembly device for a radial drilling machine drill bit, characterized in that: The invention comprises a sliding sleeve (1), a fixed sleeve (2), a cross bar (3) and an elastic reset member (6); the sliding sleeve (1) is slidably mounted on a drilling machine spindle (7); the drilling machine spindle (7) is slidably mounted on a mounting seat (9) of the drilling machine; the fixed sleeve (2) is fixedly mounted on the drilling machine spindle (7); an elastic reset member (6) is arranged between the sliding sleeve (1) and the fixed sleeve (2); a circular hole (1.3) is arranged on the side wall of the sliding sleeve (1); a long hole (11) is arranged on the side wall of the drilling machine spindle (7); the cross bar (3) is transversely inserted into the circular hole (1.3) and the long hole (11); the long hole (11) extends along the height direction of the drilling machine spindle (7); a drill bit (8) is mounted on the drilling machine spindle (7); and the drill bit (8) is located below the cross bar (3).

2. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 1, characterized in that: It also comprises a protective sleeve (10), wherein a limiting platform is provided on the sliding sleeve (1), the upper end of the protective sleeve (10) is mounted on the limiting platform, and the lower end is slidably mounted on the fixed sleeve (2).

3. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 1 or 2, characterized in that: It also includes a plurality of guide rods (4), which are evenly arranged along the circumference of the drilling machine main shaft (7), the upper ends of the guide rods (4) being mounted on the sliding sleeve (1) and the lower ends being inserted into the fixed sleeve (2).

4. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 3, characterized in that: A plurality of the elastic reset members (6) are provided, and the plurality of the elastic reset members (6) are evenly arranged along the circumference of the drilling machine main shaft (7).

5. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 4, characterized in that: The elastic reset element (6) is a spring.

6. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 4, characterized in that: The elastic reset members (6) are provided with three pieces. The sliding sleeve (1) is provided with an upper positioning hole (1.1), the fixed sleeve (2) is provided with a lower positioning hole (2.1), the upper end of the elastic reset member (6) is located in the upper positioning hole (1.1), and the lower end is located in the lower positioning hole (2.1).

7. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 6, characterized in that: Three guide rods (4) are provided, and the guide rods (4) and the elastic reset members (6) are arranged at intervals.

8. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 1, characterized in that: The fixed sleeve (2) is provided with a plurality of mounting holes (2.3) in the circumferential direction, locking screws (5) are installed on the mounting holes (2.3), and the fixed sleeve (2) is fixed to the drilling machine spindle (7) via the locking screws (5).

9. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 1, characterized in that: The drilling machine spindle (7) is provided with a tapered hole, and the drill bit (8) is installed in the tapered hole.

10. The rapid disassembly and assembly device for a radial drilling machine drill bit according to claim 1 or 9, characterized in that: It also comprises a reducing sleeve, through which the drill bit (8) is mounted on the main shaft (7) of the drilling machine.

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