Drilling machine with drill bit convenient to replace

Abstract

The utility model relates to the technical field of drilling equipment, in particular to a drilling machine with a drill bit convenient to replace, which comprises a workbench, a driving adjusting device fixedly mounted on the upper surface of the workbench, a hoop fixedly mounted on the side wall of the driving adjusting device, a connecting sleeve arranged on the inner surface of the hoop, and a key groove formed in the outer wall of the connecting sleeve. A limiting groove is formed in the outer wall, perpendicular to the key groove, of the connecting sleeve, an elastic clamping mechanism is arranged on the inner surface of the connecting sleeve and comprises a first inner hole and a second inner hole, a spring is arranged at the bottom end of the second inner hole, and the top end of the spring is connected with a pressed plate; two rectangular convex keys which are symmetrically arranged about the axis of the clamping sleeve are fixedly installed on the side wall of the bottom end of the clamping sleeve, a drill bit body is arranged on the inner surface of the clamping sleeve, and limiting columns are fixedly installed on the side walls, located on the same horizontal plane as the rectangular convex keys, of the clamping sleeve. And the working efficiency can be improved.

Description

Technical Field

[0001] This utility model relates to the field of drilling equipment, specifically a drilling machine that facilitates the replacement of drill bits. Background Technology

[0002] In the process of machining mechanical parts, drilling machines are often used to drill holes so that the parts can be assembled or function. However, when encountering parts with high hardness, it is impossible to drill holes manually, so drilling machines are needed.

[0003] Existing drilling equipment typically features a threaded structure on the collet, which secures the collet to the connecting sleeve, facilitating drill bit replacement to some extent.

[0004] However, threaded structures usually require the collet to be screwed all the way down to separate the collet from the connecting sleeve, making drill bit replacement more cumbersome and reducing work efficiency to some extent. Utility Model Content

[0005] The purpose of this invention is to provide a drilling machine that facilitates the replacement of drill bits, thereby solving the problems mentioned in the background art.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a drilling machine that facilitates the replacement of drill bits, comprising: a worktable, a drive adjustment device fixedly installed on the upper surface of the worktable, a clamp fixedly installed on the side wall of the drive adjustment device, a connecting sleeve provided on the inner surface of the clamp, a keyway provided on the outer wall of the connecting sleeve, a limit groove provided on the outer wall of the connecting sleeve perpendicular to the keyway, and an elastic locking mechanism provided on the inner surface of the connecting sleeve.

[0007] The elastic locking mechanism includes: a first inner hole and a second inner hole, with a spring at the bottom end of the second inner hole and a pressure plate connected to the top end of the spring;

[0008] The clamping sleeve has two rectangular protruding keys fixedly installed on the bottom side wall, which are symmetrically arranged around the axis of the clamping sleeve. The inner surface of the clamping sleeve is provided with the drill bit body. Limiting posts are fixedly installed on the side wall of the clamping sleeve and the rectangular protruding keys, which are on the same horizontal plane.

[0009] Preferably, the first inner hole and the second inner hole are disposed on the inner surface of the connecting sleeve, and the pressure plate slides inside the second inner hole through the elastic connection of the spring.

[0010] Preferably, the outer wall of the rectangular convex key is smaller than the inner wall of the keyway, the rectangular convex key and the keyway slide together, and the pressure plate and the spring form an elastic component.

[0011] Preferably, the clamping sleeve contacts the elastic component consisting of the pressure plate and the spring through a sliding fit between a rectangular convex key and a keyway. The limiting groove is set in an inverted L shape, and the clamping sleeve is engaged with the limiting groove through a limiting post.

[0012] Preferably, a base is fixedly installed on the surface of the workbench, a guide rod is fixedly installed on the upper surface of the base, a top plate is fixedly installed at the top of the guide rod, and the base and the top plate are connected by the guide rod.

[0013] Preferably, the drive adjustment device includes: a slide block, which is slidably connected to the guide rod, and a rack is fixedly installed on the side wall of the slide block opposite to the clamp.

[0014] Preferably, the outer surface of the guide rod is provided with an adjusting sleeve, the inner side of the adjusting sleeve is fixedly installed with a rotating rod, the outer surface of the rotating rod is provided with a gear, the gear meshes with the rack and rotates, and a pressure rod is fixedly installed at the end of the rotating rod away from the gear.

[0015] Compared with the prior art, the beneficial effects of this utility model are:

[0016] This utility model proposes a drilling machine that facilitates drill bit replacement;

[0017] When installing the drill bit body, the rectangular protruding key on the clamping sleeve is pressed downwards along the keyway on the connecting sleeve inside the first inner hole. The bottom end of the clamping sleeve contacts the pressure plate, causing the pressure plate to press the spring at the bottom of the second inner hole. Since the limiting post on the side wall of the clamping sleeve slides inside the limiting groove, and the limiting groove is set in an inverted L shape, when the clamping sleeve presses the spring at the bottom of the second inner hole through the pressure plate, the clamping sleeve is rotated clockwise to make the limiting post lock inside the limiting groove, thereby realizing the installation of the drill bit body inside the clamping sleeve. When replacing the drill bit body, the clamping sleeve is rotated counterclockwise to make the limiting post on the side wall of the clamping sleeve disengage from the limiting groove. Then, the rectangular protruding key on the clamping sleeve is ejected along the keyway by the spring rebound, thereby realizing the replacement of the drill bit body on the clamping sleeve. Compared with the traditional threaded structure, the replacement of the drill bit body is more convenient and conducive to improving work efficiency. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the installation structure of the connecting sleeve and clamping sleeve of this utility model;

[0020] Figure 3 This is an internal sectional view of the connecting sleeve and clamping sleeve mounting structure of this utility model;

[0021] Figure 4 This is an internal sectional view of the connecting sleeve of this utility model;

[0022] Figure 5 This is a schematic diagram of the drive adjustment device of this utility model.

[0023] In the diagram: 1. Workbench; 2. Base; 3. Guide rod; 4. Top plate; 5. Slide; 6. Clamp; 7. Connecting sleeve; 8. Keyway; 9. Limiting groove; 10. First inner hole; 11. Second inner hole; 12. Spring; 13. Pressure plate; 14. Clamping sleeve; 15. Rectangular protruding key; 16. Limiting post; 17. Drill bit body; 18. Adjusting sleeve; 19. Rotating rod; 20. Gear; 21. Rack; 22. Pressure rod. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0025] Please see Figures 1 to 5 This utility model provides a technical solution: a drilling machine that facilitates the replacement of drill bits;

[0026] Example 1:

[0027] In order to replace the drill bit body 17, a connecting sleeve 7 is provided on the inner surface of the clamp 6. A keyway 8 is provided on the outer wall of the connecting sleeve 7. A limit groove 9 is provided on the outer wall of the connecting sleeve 7 perpendicular to the keyway 8. An elastic locking mechanism is provided on the inner surface of the connecting sleeve 7. The elastic locking mechanism includes a first inner hole 10 and a second inner hole 11. A spring 12 is provided at the bottom end of the second inner hole 11. A pressure plate 13 is connected to the top end of the spring 12.

[0028] The clamping sleeve 14 can slide and engage with the keyway 8 via the rectangular protrusion 15 to contact the elastic assembly consisting of the pressure plate 13 and the spring 12. The bottom end of the clamping sleeve 14 contacts the pressure plate 13, causing the pressure plate 13 to press the spring 12 at the bottom of the second inner hole 11. Since the limiting post 16 on the side wall of the clamping sleeve 14 slides inside the limiting groove 9, and the limiting groove 9 is set in an inverted L shape, when the clamping sleeve 14 presses the spring 12 at the bottom of the second inner hole 11 through the pressure plate 13, the clamping sleeve 14 is rotated clockwise to make the limiting post 16 lock inside the limiting groove 9, thereby realizing the installation of the drill body 17 inside the clamping sleeve 14.

[0029] Two rectangular protruding keys 15 are fixedly installed on the bottom side wall of the clamping sleeve 14, which are symmetrically arranged around the axis of the clamping sleeve 14. The inner surface of the clamping sleeve 14 is provided with a drill body 17. Limiting posts 16 are fixedly installed on the side wall of the clamping sleeve 14 and the rectangular protruding keys 15 at the same level. The outer wall of the rectangular protruding key 15 is smaller than the inner wall of the keyway 8. The rectangular protruding key 15 and the keyway 8 are in sliding fit. The pressure plate 13 and the spring 12 form an elastic component.

[0030] By rotating the clamping sleeve 14 counterclockwise, the limiting post 16 on the side wall of the clamping sleeve 14 is disengaged from the limiting groove 9. The rectangular protruding key 15 on the clamping sleeve 14 is ejected along the keyway 8 by the rebound of the spring 12, thereby realizing the replacement of the drill bit body 17 on the clamping sleeve 14.

[0031] Example 2:

[0032] In order to enhance the performance of the drill bit body 17, a base 2 is fixedly installed on the surface of the workbench 1. A guide rod 3 is fixedly installed on the upper surface of the base 2. A top plate 4 is fixedly installed on the top of the guide rod 3. The base 2 and the top plate 4 are connected through the guide rod 3. The slide 5 is slidably connected to the guide rod 3. A rack 21 is fixedly installed on the side wall opposite to the clamp 6 of the slide 5. An adjusting sleeve 18 is provided on the outer surface of the guide rod 3. A rotating rod 19 is fixedly installed on the inner side of the adjusting sleeve 18. A gear 20 is provided on the outer surface of the rotating rod 19. The gear 20 meshes with the rack 21 and rotates. A pressure rod 22 is fixedly installed on the end of the rotating rod 19 away from the gear 20.

[0033] By pressing down on the pressure rod 22, the gear 20 on the outer surface of the rotating rod 19 is rotated, which in turn causes the gear 20 to drive the rack 21 on the opposite side wall of the slide block 5 and the clamp 6 to mesh and rotate. Thus, through the drive of the gear 20 and the rack 21, the outer surface of the guide rod 3 of the slide block 5 is driven to slide up and down, so that the drill bit body 17 can be used to drill the workpiece.

[0034] Working principle: First, pressing down on the pressure rod 22 drives the gear 20 on the outer surface of the rotating rod 19 to rotate. This gear 20 then drives the rack 21, located on the opposite sidewall of the slide block 5 and the clamp 6, to mesh and rotate. Driven by the gear 20 and rack 21, the outer surface of the guide rod 3 of the slide block 5 slides up and down, allowing drilling operations to be performed on the workpiece via the drill body 17. Secondly, when replacing the drill body 17, the clamping sleeve 14 can slide and contact the elastic assembly composed of the pressure plate 13 and the spring 12 through the rectangular convex key 15 and keyway 8. The bottom end of the clamping sleeve 14 contacts the pressure plate 13, causing the pressure plate 13 to press against the spring 12 at the bottom of the second inner hole 11. Due to the sidewall of the clamping sleeve 14... The limiting post 16 slides inside the limiting groove 9, which is inverted L shape. When the clamping sleeve 14 is pressed by the pressure plate 13 against the spring 12 at the bottom of the second inner hole 11, the clamping sleeve 14 is rotated clockwise to make the limiting post 16 lock inside the limiting groove 9, thereby enabling the installation of the drill body 17 inside the clamping sleeve 14. By rotating the clamping sleeve 14 counterclockwise, the limiting post 16 on the side wall of the clamping sleeve 14 is disengaged from the limiting groove 9. The rebound of the spring 12 causes the rectangular protruding key 15 on the clamping sleeve 14 to pop out along the keyway 8, thereby enabling the replacement of the drill body 17 on the clamping sleeve 14. Compared with the traditional threaded structure, this makes the replacement of the drill body 17 more convenient and helps to improve work efficiency.

[0035] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A drilling machine that facilitates bit replacement, characterized in that: include: Workbench (1), a drive adjustment device is fixedly installed on the upper surface of the workbench (1), a clamp (6) is fixedly installed on the side wall of the drive adjustment device, a connecting sleeve (7) is provided on the inner surface of the clamp (6), a keyway (8) is provided on the outer wall of the connecting sleeve (7), a limit groove (9) is provided on the outer wall of the connecting sleeve (7) perpendicular to the keyway (8), and an elastic locking mechanism is provided on the inner surface of the connecting sleeve (7). The elastic locking mechanism includes: a first inner hole (10) and a second inner hole (11), the bottom end of the second inner hole (11) is provided with a spring (12), and the top end of the spring (12) is connected to a pressure plate (13). A clamping sleeve (14) is provided. Two rectangular protrusions (15) are fixedly installed on the bottom side wall of the clamping sleeve (14) and are symmetrically arranged on the axis of the clamping sleeve (14). A drill body (17) is provided on the inner surface of the clamping sleeve (14). A limit post (16) is fixedly installed on the side wall of the clamping sleeve (14) and the rectangular protrusions (15) at the same level.

2. The drilling machine for easy drill bit replacement according to claim 1, characterized in that: The first inner hole (10) and the second inner hole (11) are disposed on the inner surface of the connecting sleeve (7), and the pressure plate (13) slides inside the second inner hole (11) through the elastic connection of the spring (12).

3. The drilling machine for easy drill bit replacement according to claim 1, characterized in that: The outer wall of the rectangular convex key (15) is smaller than the inner wall of the keyway (8). The rectangular convex key (15) and the keyway (8) are in sliding fit. The pressure plate (13) and the spring (12) form an elastic component.

4. The drilling machine for easy bit replacement according to claim 1, characterized in that: The clamping sleeve (14) is in contact with the elastic component composed of the pressure plate (13) and the spring (12) through the sliding fit of the rectangular convex key (15) and the keyway (8). The limiting groove (9) is set in an inverted L shape. The clamping sleeve (14) is engaged with the limiting groove (9) through the limiting post (16).

5. The drilling machine for easy bit replacement according to claim 1, characterized in that: The workbench (1) is fixedly mounted with a base (2), and a guide rod (3) is fixedly mounted on the upper surface of the base (2). A top plate (4) is fixedly mounted on the top of the guide rod (3). The base (2) and the top plate (4) are connected by the guide rod (3).

6. The drilling machine for easy bit replacement according to claim 1, characterized in that: The drive adjustment device includes: a slide (5), which is slidably connected to the guide rod (3), and a rack (21) is fixedly installed on the side wall opposite to the clamp (6).

7. The drilling machine for easy drill bit replacement according to claim 5, characterized in that: The guide rod (3) has an adjustment sleeve (18) on its outer surface. A rotating rod (19) is fixedly installed on the inner side of the adjustment sleeve (18). A gear (20) is provided on the outer surface of the rotating rod (19). The gear (20) meshes with the rack (21) and rotates. A pressure rod (22) is fixedly installed at the end of the rotating rod (19) away from the gear (20).

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