Shock-resistant structure of crown drill blade

Abstract

The utility model discloses an anti-impact structure for a crown drill blade. The anti-impact structure comprises a mounting plate, a first shell, a second shell, a mounting frame, a motor and a crown drill body, wherein the first shell and the second shell are respectively fixed at two ends of the outer wall of the bottom of the mounting plate; the mounting frame is arranged between the first shell and the second shell; when the crown drilling tool body is just in contact with a workpiece, the crown drilling tool body is stressed to drive the mounting frame and the stand columns to move upwards and extrude the springs, impact force from the lower portion is buffered, and the clamping assemblies can ascend along with the mounting frame and are continuously clamped in gaps between the clamping teeth, so that the mounting frame cannot descend after ascending; and when a drill bit at the bottom of the crown drilling tool body drills into the surface of a workpiece, the crown drilling tool body is stable and does not need to be buffered, at the moment, the stand column can be clamped and fixed through the fixing assembly, the mounting frame cannot be stressed upwards to move upwards any more, and drilling of the crown drilling tool body is facilitated.

Description

Technical Field

[0001] The utility model relates to the technical field of drill bits, in particular to an impact-resistant structure of a crown drill blade. Background Art

[0002] Crown drills, also called crown drill bits or crown drill blades, are mainly used to drill holes on workpieces while rotating at high speed. After the drill is started, the force and speed of its descent need to be carefully controlled to avoid excessive impact on the drill when the high-speed rotating drill contacts the workpiece, causing the drill to deviate or even be damaged during the impact. For this reason, we propose an impact-resistant structure for crown drill blades to facilitate processing and reduce the risk of damage to the drill. Utility Model Content

[0003] The utility model aims to provide an impact-resistant structure for a crown drill blade to solve the problem in the above-mentioned background technology that when a high-speed rotating drill comes into contact with a workpiece, the impact force on the drill is too large, causing the drill to deviate or even be damaged during the impact.

[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an impact-resistant structure of a crown drill blade, comprising: a mounting plate and a first shell and a second shell respectively fixed at both ends of the bottom outer wall of the mounting plate, a mounting frame arranged between the first shell and the second shell, a motor installed on the bottom outer wall of the mounting frame, and a crown drill body connected to the bottom of the motor, and also comprising: a slider slidably connected to the inner wall of the first shell, an outer wall on one side of the slider is fixedly connected to the mounting frame, and a locking assembly is installed on an outer wall on one side of the mounting frame, and teeth are fixed on the inner wall on one side of the second shell at equal distances, and a column is fixed on the top outer wall of the mounting frame, a spring is sleeved on the outside of the column, and a baffle is provided on the outer wall on the opposite side of the first shell and the second shell, and a fixing assembly is provided on the outer wall on the opposite side of the first shell and the second shell.

[0005] The clamping assembly comprises a box body, a compression spring connected to an inner wall of one side of the box body, a movable block connected to one end of the compression spring, a clamping block fixed to one end of the movable block and a buckle plate fixed to the top of the movable block.

[0006] The fixing assembly comprises a first connecting plate, an electric chuck connected to one end of the first connecting plate, and a second connecting plate connected to an outer wall of one side of the electric chuck.

[0007] The electric chuck is located directly above the column, and the top of the column passes through the inner circle of the electric chuck.

[0008] The clamping block and the clamping teeth are both in arc-shaped structures at one end close to each other.

[0009] The electric chuck and the motor are both connected to an external power source via a wire.

[0010] Compared with the prior art, the beneficial effects of the utility model are:

[0011] The utility model discloses an impact-resistant structure for a crown drill blade. When the crown drill body just contacts the workpiece, the crown drill body is forced to drive the mounting frame and the column to move upward and squeeze the spring, thereby buffering the impact force from below. The clamping component rises together with the mounting frame and is continuously clamped in the gap between the clamping teeth, so that the mounting frame cannot fall after rising, thereby avoiding spring rebound. When the drill bit at the bottom of the crown drill body drills into the surface of the workpiece, the crown drill body is already stable and does not need buffering. At this time, the column can be clamped and fixed by the fixing component, so that the mounting frame will no longer be forced to move upward, thereby facilitating the crown drill body to drill holes. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a three-dimensional cross-sectional view of the utility model;

[0013] Figure 2 It is a three-dimensional external view of the utility model;

[0014] Figure 3 It is a partial enlarged view of the utility model;

[0015] Figure 4 This is a structural diagram of the clamping assembly of the utility model;

[0016] Figure 5 This is a structural diagram of the fixing assembly of the present utility model.

[0017] In the figure: 1. mounting plate; 2. first shell; 3. second shell; 4. slider; 5. mounting frame; 6. positioning assembly; 601. box; 602. movable block; 603. compression spring; 604. clamping block; 605. buckle plate; 7. column; 8. spring; 9. baffle; 10. fixing assembly; 1001. first connecting plate; 1002. second connecting plate; 1003. electric chuck; 11. motor; 12. crown drill body; 13. clamping teeth. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0019] See also Figure 1-5The utility model provides an impact-resistant structure of a crown drill blade, comprising: a mounting plate 1 and a first shell 2 and a second shell 3 respectively fixed at both ends of the bottom outer wall of the mounting plate 1, a mounting frame 5 arranged between the first shell 2 and the second shell 3, a motor 11 installed on the bottom outer wall of the mounting frame 5 and a crown drill body 12 connected to the bottom of the motor 11, and also comprising: a slider 4 slidably connected to the inner wall of the first shell 2, an outer wall on one side of the slider 4 is fixedly connected to the mounting frame 5, and a positioning component 6 is installed on the outer wall on one side of the mounting frame 5, and teeth 13 are fixed on the inner wall on one side of the second shell 3 at equal distances, and a column 7 is fixed on the outer wall of the top of the mounting frame 5, a spring 8 is sleeved on the outer side of the column 7, and a baffle 9 is provided on the outer wall on the opposite side of the first shell 2 and the second shell 3, and a fixing component 10 is provided on the outer wall on the opposite side of the first shell 2 and the second shell 3.

[0020] The lifting device can be used to drive the crown drill body 12 to descend and drill the workpiece. When the crown drill body 12 just contacts the workpiece, it will be subjected to the impact force from below. The crown drill body 12 moves upward to drive the mounting frame 5 and the column 7 to move upward and squeeze the spring 8, which plays a buffering role for the impact force from below. The positioning component 6 will rise with the rise of the mounting frame 5, and is constantly stuck in the gap between the latch teeth 13, so that the mounting frame 5 cannot fall after rising, and the spring 8 can be prevented from rebounding, so that the spring 8 can only be compressed but not rebound. The rebound of the spring 8 will cause the crown drill body 12 to vibrate and become unstable. When the drill bit at the bottom of the crown drill body 12 drills into the surface of the workpiece, the crown drill body 12 is already stable and no buffering is needed. At this time, the column 7 can be clamped and fixed by the fixing component 10, and then the mounting frame 5 can be fixed, so that the mounting frame 5 will no longer be forced to move upward, which is convenient for the crown drill body 12 to drill holes.

[0021] In a preferred embodiment, the locking assembly 6 includes a box body 601, a compression spring 603 connected to the inner wall of one side of the box body 601, a movable block 602 connected to one end of the compression spring 603, a locking block 604 fixed to one end of the movable block 602, and a buckle plate 605 fixed to the top of the movable block 602.

[0022] It should be noted here that: as the box body 601 rises with the installation frame 5, the block 604 will be driven to rise. The block 604 will be hindered by the latch tooth 13 during the rising process, and will be pressed into the box body 601 together with the movable block 602, so that the block 604 can shrink. When the block 604 is in the gap between the latch teeth 13 and the latch teeth 13 during the rising process, the compression spring 603 will pop the movable block 602 outward again, so that the block 604 is inserted into the gap between the latch teeth 13 and the latch teeth 13 again, so that the installation frame 5 cannot descend during the rising process, avoiding the spring 8 from rebounding.

[0023] In a preferred embodiment, the fixing assembly 10 includes a first connecting plate 1001 , an electric chuck 1003 connected to one end of the first connecting plate 1001 , and a second connecting plate 1002 connected to an outer wall of one side of the electric chuck 1003 .

[0024] It should be noted here that the column 7 will pass through the electric chuck 1003 as the mounting frame 5 rises. When the crown drill body 12 is stable and no buffering is required, the column 7 can be clamped and fixed by the electric chuck 1003 so that the mounting frame 5 will no longer be forced to move upward, making it convenient for the crown drill body 12 to drill holes.

[0025] In a preferred embodiment, the electric chuck 1003 is located directly above the column 7 , and the top of the column 7 passes through the inner circle of the electric chuck 1003 .

[0026] It should be noted here that the electric chuck 1003 can smoothly clamp and fix the column 7.

[0027] In a preferred embodiment, the block 604 and the tooth 13 are both arc-shaped structures at one end thereof.

[0028] It should be noted here that it is convenient to squeeze the card block 604 into the box body 601 during the process of the card block 604 rising.

[0029] In a preferred embodiment, the electric chuck 1003 and the motor 11 are both connected to an external power source via wires.

[0030] It should be noted here that the electric chuck 1003 and the motor 11 can be powered on and operated.

[0031] Working principle: the mounting plate 1 can be mounted on the lifting device, and the motor 11 can be used to drive the crown drill body 12 to rotate at high speed, and the lifting device can be used to drive the crown drill body 12 to descend to drill the workpiece. When the crown drill body 12 just contacts the workpiece, it will be impacted from below. The crown drill body 12 moves upward, drives the mounting frame 5 and the column 7 to move upward and squeeze the spring 8, which plays a buffering role against the impact force from below.

[0032] As the box body 601 rises with the installation frame 5, the block 604 will be driven to rise. The block 604 will be hindered by the latch teeth 13 during the rising process, and will be pressed into the box body 601 together with the movable block 602, so that the block 604 can be retracted. When the block 604 is in the gap between the latch teeth 13 and the latch teeth 13 during the rising process, the compression spring 603 will pop the movable block 602 outward again, so that the block 604 will be inserted into the gap between the latch teeth 13 and the latch teeth 13 again, so that the installation frame 5 cannot fall during the rising process, and the spring 8 can be prevented from rebounding, so that the spring 8 can only be compressed but not rebound. The rebound of the spring 8 will cause the crown drill body 12 to vibrate and be unstable.

[0033] As the mounting frame 5 rises, the column 7 will pass through the electric chuck 1003. When the drill bit at the bottom of the crown drill body 12 drills into the surface of the workpiece, the crown drill body 12 is already stable and does not require buffering. The column 7 can be clamped and fixed by the electric chuck 1003 so that the mounting frame 5 will no longer be forced to move upward, making it convenient for the crown drill body 12 to drill holes.

[0034] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A crown drill blade impact resistant structure, comprising: A mounting plate (1), a first shell (2) and a second shell (3) respectively fixed to two ends of the bottom outer wall of the mounting plate (1), a mounting frame (5) arranged between the first shell (2) and the second shell (3), a motor (11) mounted on the bottom outer wall of the mounting frame (5), and a crown drill body (12) connected to the bottom of the motor (11); The invention is characterized in that it also includes: a slider (4) slidably connected to the inner wall of the first shell (2), the outer wall of one side of the slider (4) is fixedly connected to the installation frame (5), and a locking assembly (6) is installed on the outer wall of one side of the installation frame (5), the inner wall of one side of the second shell (3) is fixed with equidistant locking teeth (13), and the top outer wall of the installation frame (5) is fixed with a column (7), a spring (8) is sleeved on the outside of the column (7), and a baffle (9) is provided on the outer wall of the first shell (2) and the second shell (3) on the opposite side, and a fixing assembly (10) is provided on the outer wall of the first shell (2) and the second shell (3) on the opposite side.

2. The impact-resistant structure of a crown drill blade according to claim 1, characterized in that: The locking assembly (6) comprises a box body (601), a compression spring (603) connected to an inner wall of one side of the box body (601), a movable block (602) connected to one end of the compression spring (603), a locking block (604) fixed to one end of the movable block (602), and a buckle plate (605) fixed to the top of the movable block (602).

3. The impact-resistant structure of a crown drill blade according to claim 1, characterized in that: The fixing assembly (10) comprises a first connecting plate (1001), an electric chuck (1003) connected to one end of the first connecting plate (1001), and a second connecting plate (1002) connected to an outer wall of one side of the electric chuck (1003).

4. The impact-resistant structure of a crown drill blade according to claim 3, characterized in that: The electric chuck (1003) is located directly above the column (7), and the top of the column (7) passes through the inner circle of the electric chuck (1003).

5. The impact-resistant structure of a crown drill blade according to claim 2, characterized in that: The clamping block (604) and the clamping tooth (13) are both arc-shaped structures at one end close to each other.

6. The impact-resistant structure of a crown drill blade according to claim 3, characterized in that: The electric chuck (1003) and the motor (11) are both connected to an external power source via wires.

Images