An adjustable drill guide

Abstract

The utility model discloses an adjustable drilling guide mechanism relates to drilling processing auxiliary tool technical field, including backplate, guide mechanism, elastic protection mechanism, L type guide plate and mobile adjusting mechanism, the rear end surface fixed connection of backplate has handle, the front end surface connection of backplate has guide mechanism, the guide mechanism includes slide rail, U type board and mounting block, the front end surface fixed connection of backplate has two slide rails, and the both sides of U type board are slidably connected with left and right two slide rails, the utility model discloses a gyro wheel is provided with in L type guide plate bottom one side, and makes its bottom lower than guide plate base surface, cleverly realized the switching of two modes of stable support and convenient positioning, only need to tilt can utilize the rolling and carry out fast, laborsaving accurate alignment, and the preparation efficiency and positioning accuracy before operation are greatly improved, can ensure the stability of base when drilling simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of drilling auxiliary tools, specifically an adjustable drilling guide mechanism. Background Technology

[0002] Drilling is a very common process in machining and daily assembly. When using handheld drilling equipment (such as an electric drill), the operator relies entirely on manual control of the drilling position, angle, and force. This method has obvious drawbacks: First, it is difficult to ensure that the drill bit remains perpendicular to the workpiece surface, which can easily lead to drill tilting and affect subsequent assembly accuracy; second, in the initial stage of drilling, the drill bit is prone to slipping on the workpiece surface, causing inaccurate positioning; third, the pressure applied by the operator is unstable, and excessive impact force may damage the drill bit or leave indentations on the workpiece surface.

[0003] To address the aforementioned issues, some drilling aids or guides have emerged in the prior art. However, these devices still have shortcomings. While some simple guides can provide some vertical guidance, when placed on the workpiece for precise alignment, the large friction between the base and the workpiece surface makes fine-tuning very inconvenient, affecting work efficiency.

[0004] Therefore, we propose an adjustable drilling guide mechanism. Utility Model Content

[0005] 1. The problem to be solved

[0006] In view of the problems existing in the prior art, the purpose of this utility model is to provide an adjustable drilling guide mechanism to solve the problems mentioned in the background art.

[0007] 2. Technical Solution

[0008] To achieve the above objectives, this utility model provides the following technical solution:

[0009] An adjustable drilling guide mechanism includes a back plate, a guide mechanism, an elastic protection mechanism, an L-shaped guide plate, and a movable adjustment mechanism. A handle is fixedly connected to the rear end face of the back plate, and the guide mechanism is connected to the front end face of the back plate. The guide mechanism includes slide rails, a U-shaped plate, and a mounting block. Two slide rails are fixedly connected to the front end face of the back plate. The two sides of the U-shaped plate are slidably connected to the left and right slide rails. A mounting block is fixedly connected to the front end face of the U-shaped plate. A through groove is formed in the middle of the mounting block, and a bearing sleeve is fixedly connected within the through groove. An elastic protection mechanism is provided on the outer side of the U-shaped plate. An L-shaped guide plate is fixedly connected to the bottom of the front end face of the back plate, and a through guide groove is formed on the L-shaped guide plate. A movable adjustment mechanism is provided at the bottom left side of the L-shaped guide plate.

[0010] As a further embodiment of this utility model: the elastic protection mechanism includes a spring, a sliding rod, and a support plate. Movable plates are fixedly connected to both sides of the U-shaped plate. Two symmetrically distributed support plates are fixedly connected to the front end of the back plate. A sliding rod is fixedly connected to the upper surface of the support plate, and the sliding rod passes through the movable plate and is slidably connected to it. A spring is threaded through the outer side of the sliding rod, and the two ends of the spring are respectively connected to the support plate and the movable plate.

[0011] As a further embodiment of this utility model, a limit block is threadedly connected to the top of the slide rod.

[0012] As a further embodiment of this utility model, two symmetrically distributed chip removal grooves are provided on the L-shaped guide plate.

[0013] As a further embodiment of this utility model: the movable adjustment mechanism includes a mounting plate and rollers. The lower surface of the L-shaped guide plate has a mounting groove on the left side. The upper inner wall of the mounting groove is fixedly connected to the L-shaped mounting plate. The side wall of the mounting plate is rotatably connected to the rollers via a rotating shaft.

[0014] As a further embodiment of this utility model: the bottom horizontal position of the roller is lower than the bottom horizontal position of the L-shaped guide plate.

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

[0016] 1. This utility model cleverly achieves the switching between two modes: stable support and convenient positioning by setting a roller on one side of the bottom of the L-shaped guide plate and making its bottom lower than the base surface of the guide plate. It can quickly and effortlessly achieve precise alignment by simply tilting and using the roller, which greatly improves the efficiency of preparation and positioning accuracy before operation, while ensuring the stability of the base during drilling.

[0017] 2. This utility model solves the problem that rigid guides in the prior art cannot cope with uneven operating force by setting up an elastic protection mechanism and using springs to provide buffering during drilling and pressing. It can effectively absorb impact force, avoid drill bit breakage or damage to the workpiece surface due to excessive instantaneous pressure, significantly enhance operational safety, and help ensure the stability of processing quality. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of an adjustable drilling guide mechanism;

[0019] Figure 2 for Figure 1 A magnified structural diagram of region A in the middle.

[0020] In the diagram: 1. Back plate; 2. Limiting block; 3. Moving plate; 4. Handle; 5. Spring; 6. Slide rod; 7. Support plate; 8. Slide rail; 9. U-shaped plate; 10. Mounting block; 11. L-shaped guide plate; 12. Guide groove; 13. Chip removal groove; 15. Mounting plate; 16. Mounting groove; 17. Roller. Detailed Implementation

[0021] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0022] Please see Figures 1-2 In this embodiment of the utility model, an adjustable drilling guide mechanism includes a back plate 1, a guide mechanism, an elastic protection mechanism, an L-shaped guide plate 11, and a movable adjustment mechanism.

[0023] A handle 4 is fixedly connected to the rear end face of the back plate 1, and a guide mechanism is connected to the front end face of the back plate 1. The guide mechanism includes a slide rail 8, a U-shaped plate 9, and a mounting block 10. Two slide rails 8 are fixedly connected to the front end face of the back plate 1. The two sides of the U-shaped plate 9 are slidably connected to the left and right slide rails 8, and the mounting block 10 is fixedly connected to the front end face of the U-shaped plate 9. A through groove is opened in the middle of the mounting block 10, and a bearing sleeve is fixedly connected in the through groove. An elastic protection mechanism is provided on the outer side of the U-shaped plate 9. The elastic protection mechanism includes a spring 5, a slide rod 6, and a support plate 7. Movable plates are fixedly connected to both sides of the U-shaped plate 9. 3. Two symmetrically distributed support plates 7 are fixedly connected to the front end face of the back plate 1. A sliding rod 6 is fixedly connected to the upper surface of the support plate 7, and the sliding rod 6 passes through the moving plate 3 and is slidably connected to it. A spring 5 is threaded on the outer side of the sliding rod 6. The two ends of the spring 5 are respectively connected to the support plate 7 and the moving plate 3. A limit block 2 is threadedly connected to the top end of the sliding rod 6. When the U-shaped plate 9 and the moving plate 3 move upward due to the rebound force of the spring 5 or manual lifting, the upper surface of the moving plate 3 will eventually contact the limit block 2, thereby preventing it from continuing to move upward and preventing the sliding parts from accidentally falling off the sliding rod 6, thus improving the safety performance of the device.

[0024] It should be noted that the guiding function in this embodiment is mainly realized by the guiding mechanism. When drilling, the operator holds the handle 4 and places the device on the workpiece surface. The drilling tool (not shown) installed in the through groove of the mounting block 10 has its movement trajectory strictly limited to the linear path determined by the slide rail 8. The bearing sleeve set in the through groove provides stable and low-friction support for the rotation of the drilling tool, thereby ensuring that the drilling tool feeds along a single axis, improving the verticality and positioning accuracy of the drilling. In addition, the device is equipped with an elastic protection mechanism. When the operator applies downward pressure through the handle 4, the U-shaped plate 9 and the moving plate 3 will slide down along the slide rod 6, thereby compressing the spring 5. The rebound force of the spring 5 absorbs the impact force caused by uneven force control, avoiding excessive pressure acting directly on the drill bit and the workpiece, thereby reducing the risk of drill bit wear or breakage and protecting the workpiece surface from damage.

[0025] An L-shaped guide plate 11 is fixedly connected to the bottom of the front end face of the back plate 1, and a through guide groove 12 is provided on the L-shaped guide plate 11. Two symmetrically distributed chip removal grooves 13 are provided on the L-shaped guide plate 11. A moving adjustment mechanism is provided at the bottom left side of the L-shaped guide plate 11. The moving adjustment mechanism includes a mounting plate 15 and a roller 17. A mounting groove 16 is provided on the left side of the lower surface of the L-shaped guide plate 11. An L-shaped mounting plate 15 is fixedly connected to the upper inner wall of the mounting groove 16. The side wall of the mounting plate 15 is rotatably connected to the roller 17 through a rotating shaft. The bottom horizontal position of the roller 17 is lower than the bottom horizontal position of the L-shaped guide plate 11.

[0026] It should be noted that during normal drilling, the bottom surface of the L-shaped guide plate 11 is in full contact with the workpiece, providing maximum stability, while the roller 17, which is positioned lower at the bottom, is suspended and does not participate in support. When fine-tuning the device position is required, the operator can slightly tilt the entire device, causing the bottom of the L-shaped guide plate 11 to detach from the workpiece surface, making the roller 17 the sole point of contact. Because the roller 17 and the workpiece surface experience rolling friction, the frictional resistance is low, allowing the operator to easily and smoothly move or rotate the entire guide mechanism with minimal force, achieving rapid and precise alignment of the drilling point. After positioning, the device can be leveled to return to a stable drilling state.

[0027] In summary, this invention, through the coordinated action of the guide mechanism on the back plate 1 and the guide groove 12 fixed on the L-shaped guide plate 11 at the bottom, constructs a linear guide path for the drilling tool, ensuring the verticality and machining accuracy of the drilling operation. Furthermore, the built-in elastic protection mechanism utilizes the compression and rebound of the spring 5 to provide buffering protection during operation, absorbing impacts caused by uneven force application, reducing damage to the drill bit or workpiece surface, and improving the operational tolerance. Moreover, by incorporating rollers 17 with their bottoms lower than the base surface of the L-shaped guide plate 11, the device can be easily and smoothly adjusted by tilting and rolling when movement is required. During normal drilling, the entire bottom surface of the L-shaped guide plate 11 provides stable support on the workpiece, balancing convenient positioning with operational stability.

[0028] The circuits and controls involved in this utility model are all existing technologies, and will not be described in detail here.

[0029] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An adjustable drilling guide mechanism, characterized in that, include: A back plate (1) is fixedly connected to a handle (4) on its rear end face; The guide mechanism is connected to the front end face of the back plate (1). The guide mechanism includes a slide rail (8), a U-shaped plate (9) and a mounting block (10). Two slide rails (8) are fixedly connected to the front end face of the back plate (1). The two sides of the U-shaped plate (9) are slidably connected to the left and right slide rails (8). The mounting block (10) is fixedly connected to the front end face of the U-shaped plate (9). A through groove is opened in the middle of the mounting block (10), and a bearing sleeve is fixedly connected in the through groove. An elastic protection mechanism is provided on the outer side of the U-shaped plate (9); L-shaped guide plate (11), the bottom of the front end face of the back plate (1) is fixedly connected to the L-shaped guide plate (11), and the L-shaped guide plate (11) is provided with a through guide groove (12); The L-shaped guide plate (11) is provided with a movable adjustment mechanism at the bottom left side.

2. The adjustable drilling guide mechanism according to claim 1, characterized in that, The elastic protection mechanism includes a spring (5), a slide rod (6), and a support plate (7). Movable plates (3) are fixedly connected to both sides of the U-shaped plate (9). Two symmetrically distributed support plates (7) are fixedly connected to the front end of the back plate (1). A slide rod (6) is fixedly connected to the upper surface of the support plate (7), and the slide rod (6) passes through the movable plate (3) and is slidably connected to it. A spring (5) is threaded on the outside of the slide rod (6), and the two ends of the spring (5) are connected to the support plate (7) and the movable plate (3) respectively.

3. The adjustable drilling guide mechanism according to claim 2, characterized in that, The top of the slide bar (6) is threadedly connected to a limit block (2).

4. The adjustable drilling guide mechanism according to claim 1, characterized in that, The L-shaped guide plate (11) has two symmetrically distributed chip removal grooves (13).

5. An adjustable drilling guide mechanism according to claim 1, characterized in that, The movable adjustment mechanism includes a mounting plate (15) and a roller (17). The lower surface of the L-shaped guide plate (11) is provided with a mounting groove (16) on the left side. The upper inner wall of the mounting groove (16) is fixedly connected to the L-shaped mounting plate (15). The side wall of the mounting plate (15) is rotatably connected to the roller (17) through a rotating shaft.

6. An adjustable drilling guide mechanism according to claim 5, characterized in that, The bottom horizontal position of the roller (17) is lower than the bottom horizontal position of the L-shaped guide plate (11).

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