Ultra-fine hard alloy microbit with ultra-large length-diameter ratio

Abstract

The utility model discloses an ultra-large length-diameter ratio superfine hard alloy microbit, which belongs to the field of microbits, and comprises a driving motor, the output end of the driving motor is fixedly connected with a mounting vertical rod, and the lower end of the mounting vertical rod is fixedly connected with a microbit bottom column. A microbit body is fixedly connected to the lower end of the microbit bottom column, a fixing outer ring is fixedly connected to the middle of the outer end of the mounting vertical rod, elastic outer arc pieces are rotationally connected to the four corners of the lower end of the fixing outer ring, outer ring columns are rotationally connected to the lower ends of the multiple elastic outer arc pieces, and springs are fixedly connected to the upper inner walls and the lower inner walls of the elastic outer arc pieces. A plurality of elastic outer arc pieces capable of flexibly generating arc-shaped deformation outside the microbit body can be arranged outside the microbit body, the risk that the surface of the microbit body is abraded and scratched due to the fact that the installation vertical rod collides with other hard objects on a table top is avoided, the use mode is flexible, and the service life of the microbit body is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of micro drill bits, and more specifically to an ultra-fine hard alloy micro drill bit with a super-large aspect ratio. Background Art

[0002] Drills with a diameter less than 3.175mm are usually called micro drills, or micro drills for short. To make micro drills work efficiently, a series of factors must be considered: such as the various elements of the drill itself, processing parameters, hole depth, installation perfection, and workpiece structure.

[0003] Before and after the micro drill body is installed on the vertical pole for drilling operation, it needs to be temporarily placed on the table. Once it collides with other hard objects on the table, there is a risk of wear and scratches on its surface, affecting the service life of the micro drill body. Therefore, it is necessary to design an ultra-fine carbide micro drill with a large aspect ratio and protective function to solve the above problems. Utility Model Content

[0004] 1. Technical issues to be solved

[0005] In view of the problems existing in the prior art, the purpose of the utility model is to provide an ultra-fine cemented carbide micro drill with an ultra-large aspect ratio. The utility model can be provided with a plurality of elastic outer arc pieces outside the micro drill body which can flexibly produce arc deformation outside the micro drill body, so as to avoid the risk of wear and scratches on the surface of the micro drill body caused by collision with other hard objects on the desktop. The utility model has flexible usage and is conducive to ensuring the service life of the micro drill body.

[0006] Technical Solution

[0007] To solve the above problems, the utility model adopts the following technical solutions.

[0008] An ultra-fine carbide micro drill with an ultra-large aspect ratio comprises a driving motor, wherein the output end of the driving motor is fixedly connected to a mounting pole, the lower end of the mounting pole is fixedly connected to a micro drill base column, the lower end of the micro drill base column is fixedly connected to a micro drill body, a fixed outer ring is fixedly connected to the middle of the outer end of the mounting pole, the four corners of the lower end of the fixed outer ring are rotatably connected to elastic outer arc pieces, the lower ends of a plurality of elastic outer arc pieces are rotatably connected to outer ring columns, the outer ring columns slide outside the micro drill body, and the upper and lower inner walls of the elastic outer arc pieces are fixedly connected to springs.

[0009] Furthermore, a plurality of elastic outer arc pieces are respectively located outside the micro drill body, and a contact surface soft cushion layer is fixedly connected to the lower end of the outer ring column.

[0010] Furthermore, the contact surface flexible cushion layer contacts the working base surface, and a conical oil storage tank is provided on the upper side of the inner end of the outer ring column.

[0011] Furthermore, the inner end of the conical oil storage tank is filled with maintenance oil, and the upper inner wall of the outer ring column is fixedly connected with the electromagnetic block pipe port.

[0012] Furthermore, the pipe port of the electromagnetic block is connected to the conical oil storage tank, and the maintenance oil is in contact with the micro drill body.

[0013] Furthermore, the drilling direction of the mounting pole is vertical, and a plurality of grooves are provided at the ends where the fixed outer ring and the outer ring column are close to each other.

[0014] Furthermore, a cross bar is fixedly connected between the left and right inner walls of the groove, and the cross bar is rotatably connected to the elastic outer arc piece. Beneficial Effects

[0015] Compared with the prior art, the advantages of the present invention are:

[0016] (1) In this scheme, when the micro drill body is vertically drilled by installing a vertical pole, a plurality of elastic outer arc pieces that can flexibly produce arc deformation on the outside of the micro drill body can be arranged. When the vertical pole is removed, the plurality of elastic outer arc pieces can automatically rebound to a state where the micro drill body is completely engulfed by the springs inside, thereby avoiding the risk of the micro drill body colliding with other hard objects on the desktop and causing wear and scratches on its surface. The micro drill body can flexibly follow the working state of the micro drill body, and there is no need to frequently remove and install it. The use method is flexible, which is conducive to ensuring the service life of the micro drill body.

[0017] (2) When the micro drill body is installed with a vertical pole for drilling operations, the maintenance oil in the conical oil storage tank can be sprayed out by using the electromagnetic block pipe mouth on the outer ring column. As the outer ring column slides outside the micro drill body, the maintenance oil can be evenly sprayed on the outside of the micro drill body, thereby performing maintenance operations on the micro drill body and further improving the service life of the micro drill body. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the axial side structure of the micro drill body of the utility model;

[0019] Figure 2 This is a schematic diagram of the top view of the micro drill body of the utility model;

[0020] Figure 3 For the utility model Figure 2 A schematic diagram of the partially truncated and enlarged structure at center A;

[0021] Figure 4 It is a schematic diagram of the front cross-sectional structure of the outer ring column of the utility model.

[0022] Description of the numbers in the figure:

[0023] 1. Driving motor; 2. Mounting pole; 3. Micro drill base column; 4. Micro drill body; 5. Fixed outer ring; 6. Elastic outer arc piece; 7. Outer ring column; 8. Contact surface soft cushion layer; 9. Cross bar; 10. Electromagnetic block pipe mouth; 11. Conical oil storage tank; 12. Maintenance oil; 13. Spring; 14. Groove. DETAILED DESCRIPTION

[0024] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.

[0025] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "top / bottom" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0027] Example:

[0028] See also Figure 1-3 The ultra-fine cemented carbide micro drill with an ultra-large aspect ratio comprises a driving motor 1, the output end of the driving motor 1 is fixedly connected with a mounting pole 2, the lower end of the mounting pole 2 is fixedly connected with a micro drill base column 3, the lower end of the micro drill base column 3 is fixedly connected with a micro drill body 4, the middle part of the outer end of the mounting pole 2 is fixedly connected with a fixed outer ring 5, the four corners of the lower end of the fixed outer ring 5 are rotatably connected with elastic outer arc pieces 6, the lower ends of multiple elastic outer arc pieces 6 are rotatably connected with outer ring columns 7, the outer ring columns 7 slide outside the micro drill body 4, and the upper and lower inner walls of the elastic outer arc pieces 6 are fixedly connected with springs 13.

[0029] See also Figure 1 , 3 -4, a plurality of elastic outer arc pieces 6 are respectively located on the outside of the micro drill body 4, a contact surface soft cushion layer 8 is fixedly connected to the lower end of the outer ring column 7, and the contact surface soft cushion layer 8 contacts the working base surface, a conical oil storage tank 11 is opened on the upper side of the inner end of the outer ring column 7, and the inner end of the conical oil storage tank 11 is filled with maintenance oil 12, an electromagnetic block pipe mouth 10 is fixedly connected to the upper inner wall of the outer ring column 7, and the electromagnetic block pipe mouth 10 is communicated with the conical oil storage tank 11, and the maintenance oil 12 contacts with the micro drill body 4, and the drilling direction of the mounting pole 2 is vertical, and a plurality of grooves 14 are opened at one end where the fixed outer ring 5 and the outer ring column 7 are close to each other, and a cross bar 9 is fixedly connected between the left and right inner walls of the groove 14, and the cross bar 9 is rotatably connected to the elastic outer arc piece 6.

[0030] See also Figure 1-4 In this solution, when the micro drill body 4 is vertically drilled by the mounting pole 2, a plurality of elastic outer arc pieces 6 that can flexibly produce arc deformation outside the micro drill body 4 can be arranged outside the micro drill body 4. When the mounting pole 2 is removed, the plurality of elastic outer arc pieces 6 can automatically rebound to a state where the micro drill body 4 is completely engulfed by the spring 13 inside, thereby avoiding the risk of the micro drill body 4 colliding with other hard objects on the desktop and causing the surface to be worn and scratched. The micro drill body 4 can flexibly follow the working state of the micro drill body 4 without the need to It does not need to be frequently disassembled and installed, and its usage is flexible, which is beneficial to ensuring the service life of the micro drill body 4. When the micro drill body 4 is vertically drilled by installing the vertical pole 2, the electromagnetic block pipe mouth 10 on the outer ring column 7 can also be used to spray the maintenance oil 12 in the conical oil storage tank 11. As the outer ring column 7 slides outside the micro drill body 4, the maintenance oil 12 can be evenly sprayed on the outside of the micro drill body 4, so that the micro drill body 4 can be maintained, further improving the service life of the micro drill body 4.

[0031] The above are only preferred specific implementations of the utility model; however, the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solution and improved ideas of the utility model within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model.

Claims

1. An ultra-fine carbide micro drill with a large aspect ratio, comprising a drive motor (1), characterized in that: The output end of the driving motor (1) is fixedly connected to a mounting pole (2), the lower end of the mounting pole (2) is fixedly connected to a micro drill base column (3), the lower end of the micro drill base column (3) is fixedly connected to a micro drill body (4), the middle of the outer end of the mounting pole (2) is fixedly connected to a fixed outer ring (5), the four corners of the lower end of the fixed outer ring (5) are rotatably connected to elastic outer arc pieces (6), the lower ends of a plurality of the elastic outer arc pieces (6) are rotatably connected to outer ring columns (7), the outer ring columns (7) slide outside the micro drill body (4), and the upper and lower inner walls of the elastic outer arc pieces (6) are fixedly connected to springs (13).

2. The ultra-fine cemented carbide micro drill with a large aspect ratio according to claim 1, characterized in that: The plurality of elastic outer arc pieces (6) are respectively located outside the micro drill body (4), and the lower end of the outer ring column (7) is fixedly connected with a contact surface soft cushion layer (8).

3. The ultra-fine cemented carbide micro drill with a large aspect ratio according to claim 2, characterized in that: The contact surface soft cushion layer (8) contacts an operating base surface, and a conical oil storage tank (11) is provided on the upper side of the inner end of the outer ring column (7).

4. The ultra-fine cemented carbide micro drill with a large aspect ratio according to claim 3 is characterized in that: The inner end of the conical oil storage tank (11) is filled with maintenance oil (12), and the upper inner wall of the outer ring column (7) is fixedly connected to the electromagnetic block pipe port (10).

5. The ultra-fine cemented carbide micro drill with a large aspect ratio according to claim 4, characterized in that: The electromagnetic block pipe port (10) is connected to the conical oil storage tank (11), and the maintenance oil (12) is in contact with the micro drill body (4).

6. The ultra-fine cemented carbide micro drill with a large aspect ratio according to claim 1, characterized in that: The drilling direction of the mounting pole (2) is in a vertical direction, and a plurality of grooves (14) are provided at the ends of the fixed outer ring (5) and the outer ring column (7) that are close to each other.

7. The ultra-fine cemented carbide micro drill with a large aspect ratio according to claim 6, characterized in that: A cross bar (9) is fixedly connected between the left and right inner walls of the groove (14), and the cross bar (9) is rotatably connected to the elastic outer arc piece (6).

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