Quick dismounting and mounting device for radial drilling machine drill bit

Abstract

The utility model relates to a quick dismounting and mounting device for a radial drilling machine drill bit, which comprises a sliding sleeve, a fixed sleeve, a cross rod and an elastic reset piece, the sliding sleeve is slidably mounted on a drilling machine spindle, the drilling machine spindle is slidably mounted on a mounting seat of a drilling machine, the fixed sleeve is fixedly mounted on the drilling machine spindle, 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 utility model relates to mechanical processing technical field, concretely relates to a quick dismounting device for the drill bit of radial drilling machine. BACKGROUND

[0002] Radial drilling machine is a common metal processing drilling machine, and is mainly used for drilling operation on metal materials. In the radial drilling machine, the drill bit is a key component for performing drilling work. According to the size of drilling, different diameter drill bits need to be replaced. In the prior art, when dismounting the drill bit, one hand holds a hammer head, and the other hand holds a wedge, and the drill bit is continuously impacted from the hole in the side wall of the drill bit clamp by the wedge, so that the drill bit is dismounted. In order to avoid the drill bit from being damaged by knocking when falling, another person needs to hold the drill bit by hand during dismounting. The whole dismounting process is complicated, time-consuming and laborious, and affects the processing efficiency of the workpiece. SUMMARY

[0003] The utility model provides a quick dismounting device for the drill bit of radial drilling machine in view of prior art problems.

[0004] The utility model discloses a quick dismounting device for the drill bit of radial drilling machine, including the sliding sleeve, the fixed sleeve, the cross rod and the elastic reset piece, the sliding sleeve is slidably installed on the drill bed main shaft, the drill bed main shaft is slidably installed on the mounting seat of drill bed, the fixed sleeve is fixedly installed on the drill bed main shaft, and the elastic reset piece is arranged between the sliding sleeve and the fixed sleeve, a circular hole is formed in the side wall of the sliding sleeve, a long strip hole is formed in the side wall of the drill bed main shaft, the cross rod is transversely inserted into the circular hole and the long strip hole, the long strip hole extends along the height direction of the drill bed main shaft, the drill bed main shaft is installed with the drill bit, and the drill bit is located below the cross rod.

[0005] On the basis of the above technical scheme, the utility model can also be improved as follows:

[0006] Preferably, the sliding sleeve is provided with a limiting table, the upper end of the protective sleeve is installed on the limiting table, and the lower end is slidably sleeved on the fixed sleeve.

[0007] Preferably, a plurality of guide rods are evenly arranged along the circumference of the drill bed main shaft, the upper end of the guide rod is installed on the sliding sleeve, and the lower end is inserted into the fixed sleeve.

[0008] Preferably, the elastic reset piece is provided with a plurality of elastic reset pieces, and the plurality of elastic reset pieces are evenly arranged along the circumference of the drill bed main shaft.

[0009] Preferably, the elastic reset piece is a spring.

[0010] Preferably, the elastic reset member is provided with three, the sliding sleeve is provided with an upper positioning hole, the positioning sleeve is provided with a lower positioning hole, 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, the guide rod is provided with three, and the guide rod is arranged at intervals with the elastic reset member.

[0012] Preferably, the positioning sleeve is provided with a plurality of mounting holes in the circumferential direction, the mounting holes are mounted with locking screws, and the positioning sleeve is fixed on the drill bed main shaft through the locking screws.

[0013] Preferably, the drill bed main shaft is provided with a conical hole, and the drill bit is mounted in the conical hole.

[0014] Preferably, the drill bit is mounted on the drill bed main shaft through the variable diameter sleeve.

[0015] The beneficial effects of the utility model are as follows: after workpiece machining is completed, the operation handle on the drill bed is operated, the drill bed main shaft, the drill bit and the positioning sleeve are moved upwards, the positioning sleeve compresses the elastic reset member to deform, the elastic reset member applies an upward force to the sliding sleeve to move the sliding sleeve upwards, when the sliding sleeve abuts against the mounting seat, the drill bed main shaft and the drill bit continue to move upwards, the cross rod on the sliding sleeve applies a downward force to the drill bit, the drill bit is detached from the drill bed main shaft, the detaching process is simple and fast, time and labor are saved, the difficulty of drill bit replacement is reduced, and workpiece machining efficiency is improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is a structure schematic view of the utility model from the cross rod;

[0017] Figure 2 It is a structure schematic view of the utility model from the guide rod;

[0018] Figure 3 It is a structure schematic view of the utility model from the elastic reset key;

[0019] Figure 4 It is a structure schematic view of the sliding sleeve of the utility model;

[0020] Figure 5 It is a structure schematic view of the positioning sleeve of the utility model.

[0021] The following is recorded: 1, sliding sleeve; 1.1, upper positioning hole; 1.2, upper guide hole; 1.3, round hole; 2, positioning sleeve; 2.1, lower positioning hole; 2.2, lower guide hole; 2.3, mounting hole; 3, cross rod; 4, guide rod; 5, locking screw; 6, elastic reset member; 7, drill bed main shaft; 8, drill bit; 9, mounting seat; 10, protective sleeve; 11, long hole. PREFERRED EMBODIMENT

[0022] The principles and features of this utility model are described below with reference to the accompanying drawings. The examples given are only for explaining this utility model and are not intended to limit the scope of this utility model.

[0023] like Figures 1 to 5 As shown, this utility model discloses a quick assembly and disassembly device for drill bits on a radial drilling machine, including a sliding sleeve 1, a fixed sleeve 2, a crossbar 3, and an elastic reset member 6. The sliding sleeve 1 is slidably mounted on the drilling machine spindle 7, and the drilling machine spindle 7 is slidably mounted on the mounting base 9 of the drilling machine. The fixed sleeve 2 is fixedly mounted on the drilling machine spindle 7. An elastic reset member 6 is provided between the sliding sleeve 1 and the fixed sleeve 2. A circular hole 1.3 is provided on the side wall of the sliding sleeve 1, and an elongated hole 11 is provided on the side wall of the drilling machine spindle 7. The crossbar 3 is horizontally inserted into the circular hole 1.3 and the elongated hole 11. The elongated hole 11 extends along the height direction of the drilling machine spindle 7 and is a rectangular hole or an elliptical hole. A drill bit 8 is mounted on the drilling machine spindle 7 and is located below the crossbar 3. Specifically, the drill spindle 7 is provided with a tapered hole, and the drill bit 8 is installed in the tapered hole. The diameter of the tapered hole gradually decreases from bottom to top to ensure the firmness of the drill bit 8. When the drill spindle 7 drives the drill bit 8 to move upward, the crossbar 3 moves along the elongated hole 11, thereby removing the drill bit 8 from the drill spindle 7. The overall disassembly is simple and the operation is convenient.

[0024] The quick-release device also includes a protective sleeve 10. A limiting platform is provided on the sliding sleeve 1. The upper end of the protective sleeve 10 is installed on the limiting platform, and the lower end is slidably fitted onto the fixed sleeve 2. The protective sleeve 10 protects the elastic reset member 6, preventing foreign objects from entering the elastic reset member 6 and causing it to malfunction.

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

[0026] The quick-release device also includes multiple guide rods 4, which are evenly arranged around the circumference of the drill spindle 7. The upper end of the guide rod 4 is installed on the sliding sleeve 1, and the lower end is inserted into the fixed sleeve 2. The guide rods 4 guide the sliding sleeve 1 and the fixed sleeve 2, ensuring the smooth movement of the sliding sleeve 1 and the fixed sleeve 2 and preventing deflection.

[0027] Specifically, there are three guide rods 4, three upper guide holes 1.2 on the sliding sleeve 1, and three corresponding lower guide holes 2.2 on the fixed sleeve 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 both guide and ensure that the sliding sleeve 1 and the fixed sleeve 2 can move relative to each other.

[0028] The elastic reset member 6 is provided with a plurality of elastic reset members 6, and the plurality of elastic reset members 6 are evenly arranged along the circumference of the drill bed main shaft 7. The elastic reset member 6 can uniformly apply force to the sliding sleeve 1, avoid the sliding sleeve 1 from tilting, ensure the sliding sleeve 1 can move normally, and ensure that the drill bit 8 can be normally removed.

[0029] In the embodiment, the elastic reset member 6 is a spring, and the elastic reset member 6 is provided with three elastic reset members 6. The sliding sleeve 1 is provided with an upper positioning hole 1.1, and the positioning 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. The position of the elastic reset member 6 is limited by the upper positioning hole 1.1 and the lower positioning hole 2.1, so as to avoid deviation and ensure that the elastic reset member 6 can normally stretch and retract.

[0030] Further, the guide rod 4 is arranged in the elastic reset member 6. The overall stability can be improved, the structure is compact, and the occupied area is reduced.

[0031] In the embodiment, the positioning sleeve 2 is provided with a plurality of mounting holes 2.3 in the circumference, the mounting holes 2.3 are arranged along the radial direction of the positioning sleeve 2, the mounting holes 2.3 are provided with locking screws 5, and the positioning sleeve 2 is fixed on the drill bed main shaft 7 through the locking screws 5. Further, the mounting hole 2.3 is a counterbore hole, the end of the locking screw 5 is located in the counterbore hole, the flatness of the surface of the positioning sleeve 2 is ensured, and the protective sleeve 10 can normally move outside the positioning sleeve 2.

[0032] The quick dismounting device further comprises a variable diameter sleeve, and the drill bit 8 is mounted on the drill bed main shaft 7 through the variable diameter sleeve. By adopting the variable diameter sleeve, the installation requirements of drill bits 8 with different diameters can be met, the use range is improved, and the processing cost is reduced.

[0033] The use process of the quick dismounting device is as follows:

[0034] The drill bit 8 is inserted into the drill bed main shaft 7, the operating handle on the drill bed is operated, the drill bed main shaft 7 drives the drill bit 8 to move downward and rotate, and drilling on the workpiece is realized;

[0035] When the drilling is completed, the operating handle is reversely moved or rotated, thereby driving the drill bed main shaft 7, the drill bit 8 and the positioning sleeve 2 to move upward. The positioning sleeve 2 compresses the elastic reset member 6 to deform, the elastic reset member 6 applies upward force to the sliding sleeve 1 to move the sliding sleeve 1 upward. When the sliding sleeve 1 abuts against the mounting seat 9 on the drill bed, the drill bed main shaft 7 and the drill bit 8 continue to move upward. When the cross rod 3 contacts the drill bit 8, the cross rod 3 applies downward force to the drill bit 8, thereby realizing the dismounting of the drill bit 8 from the drill bed main shaft 7. An operator can operate the operating handle with one hand and hold the drill bit with the other hand. The dismounting process is simple and fast, and one operator can complete the process, thereby saving time and effort, reducing the difficulty of replacing the drill bit 8, and improving the workpiece processing efficiency.

[0036] The above merely describes preferred embodiments of the present application and is not intended to limit the present application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A quick assembly and disassembly device for drill bits on a radial drilling machine, characterized in that, The device includes a sliding sleeve (1), a fixed sleeve (2), a crossbar (3), and an elastic reset member (6). The sliding sleeve (1) is slidably mounted on the drill spindle (7), and the drill spindle (7) is slidably mounted on the mounting base (9) of the drill. The fixed sleeve (2) is fixedly mounted on the drill spindle (7). An elastic reset member (6) is provided between the sliding sleeve (1) and the fixed sleeve (2). A round hole (1.3) is provided on the side wall of the sliding sleeve (1), and an elongated hole (11) is provided on the side wall of the drill spindle (7). The crossbar (3) is inserted laterally into the round hole (1.3) and the elongated hole (11). The elongated hole (11) extends along the height direction of the drill spindle (7). A drill bit (8) is mounted on the drill spindle (7) and is located below the crossbar (3).

2. The quick-release device for drill bits of radial drilling machines according to claim 1, characterized in that, It also includes a protective sleeve (10), on which a limiting platform is provided. The upper end of the protective sleeve (10) is mounted on the limiting platform, and the lower end is slidably fitted onto the fixed sleeve (2).

3. The quick-release device for drill bits of a radial drilling machine according to claim 1 or 2, characterized in that, It also includes multiple guide rods (4), which are evenly arranged around the circumference of the drill spindle (7). The upper end of the guide rod (4) is mounted on the sliding sleeve (1), and the lower end is inserted into the fixed sleeve (2).

4. The quick-release device for drill bits of a radial drilling machine according to claim 3, characterized in that, Multiple elastic reset members (6) are provided, and the multiple elastic reset members (6) are evenly arranged circumferentially along the spindle (7) of the drilling machine.

5. The quick-release device for drill bits of a radial drilling machine according to claim 4, characterized in that, The elastic reset element (6) is a spring.

6. The quick-release device for drill bits of a radial drilling machine according to claim 4, characterized in that, The elastic reset member (6) is provided in three parts. The sliding sleeve (1) is provided with an upper positioning hole (1.1) and 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 quick-release device for drill bits of a radial drilling machine according to claim 6, characterized in that, There are three guide rods (4), and the guide rods (4) are spaced apart from the elastic reset member (6).

8. The quick-release device for drill bits of a radial drilling machine according to claim 1, characterized in that, The fixed sleeve (2) has a plurality of mounting holes (2.3) in its circumference. Locking screws (5) are installed in the mounting holes (2.3). The fixed sleeve (2) is fixed on the drill spindle (7) by the locking screws (5).

9. The quick-release device for drill bits of a radial drilling machine according to claim 1, characterized in that, The drill spindle (7) is provided with a tapered hole, and the drill bit (8) is installed in the tapered hole.

10. The quick-release device for drill bits of a radial drilling machine according to claim 1 or 9, characterized in that, It also includes a reducing sleeve, through which the drill bit (8) is mounted on the drill spindle (7).

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