Machining drill bit for micro holes

Abstract

The utility model discloses a machining drill bit for micro holes, and belongs to the technical field of industrial drill bits. The drill bit comprises a drill rod capable of containing the drill bit, and one end of the drill rod is open; the drill tip is arranged in the drill rod and can move in the length direction of the drill rod; the transmission assembly can control the drill bit to move to the outside of the drill rod; the sealing cover is used for sealing the opening of the drill rod. According to the machining drill bit for the micro holes, the drill tip can be stored in the drill rod through the transmission assembly when not used, the drill rod is used for protecting the drill tip, so that the drill tip is protected, impact force generated by falling can be counteracted through the drill rod when the drill tip falls accidentally, and the drill tip is prevented from being broken due to impact; the protection capability of the drill tip is improved and the damage rate of the drill bit is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of industrial drill bits, in particular to a drill bit for processing micro holes. Background Art

[0002] The twist drill (commonly known as drill bit), which is widely used in modern industrial processing, is a tool for processing holes in solid workpieces with complex shapes. It was invented more than a hundred years ago. Now, hundreds of millions of drill bits of various types are consumed every year around the world.

[0003] Some of these high-precision devices or workpieces need to be processed with micro-holes, such as integrated workpieces such as circuit boards, and the drill bits for processing micro-holes usually need to be reduced in size to meet the specifications for micro-hole processing.

[0004] Since drill bits for processing micro holes are usually slender and require a certain degree of hardness, their overall structure is relatively brittle. When they fall from a high altitude or are impacted by external forces, they are prone to breakage and cannot be used normally, resulting in poor protection capabilities. Extra care must be taken when handling them. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a drill bit for processing micro holes.

[0006] The technical solution of the utility model is: a drill bit for processing micro-holes, comprising: a drill rod capable of storing the drill bit, one end of the drill rod being open; a drill tip disposed inside the drill rod and capable of moving along its length direction; a transmission component capable of controlling the drill bit to move to the outside of the drill rod; a sealing cover for closing the open end of the drill rod; wherein the transmission component comprises: a lead screw rotatably disposed inside the drill rod, a storage groove for the lead screw to extend inside the drill tip; a transmission seat disposed at the rear end of the drill tip; and a nut seat fixed inside the transmission seat and threadedly connected to the lead screw.

[0007] Furthermore, a bearing whose inner ring is fixed to the lead screw is provided inside the drill rod, and an outer ring of the bearing is fixedly connected to the drill rod.

[0008] Furthermore, one end of the lead screw passes through the drill rod and is provided with a knob, and the other end of the drill rod is provided with a groove for facilitating the rotation of the knob.

[0009] Furthermore, the inner wall of the drill rod is provided with a plurality of slide grooves spaced apart along its length direction, and the transmission seat is provided with a plurality of slide bars slidably connected to the slide grooves.

[0010] Furthermore, the transmission seat and the drill tip are integrally formed.

[0011] Furthermore, the sealing cover is provided with a sealing plug capable of extending into the interior of the drill rod, and the sealing plug is made of rubber material.

[0012] Furthermore, the outer surface of the drill rod is provided with two opposite arc-shaped grooves.

[0013] Furthermore, the drill tip and the lead screw are both located on the central axis of the drill rod.

[0014] The beneficial technical effect of the utility model is that the drill tip can be stored inside the drill rod when not in use through the transmission component, and the drill rod is used to protect the drill tip, thereby protecting the drill tip; when it falls accidentally, the impact force generated by the fall can be offset by the drill rod, avoiding the drill tip from being broken by the impact, thereby improving the protection capability of the drill tip and reducing the damage rate of the drill bit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of a front cross-section of the structure of the utility model;

[0016] Figure 2 It is a schematic diagram of the front cross-section of the structure of the transmission seat of the utility model;

[0017] Figure 3 This is a schematic diagram of the structural tail end of the drill tip of the utility model;

[0018] Figure 4 It is a schematic structural side view of the transmission seat of the utility model.

[0019] The numbers and letters in the figure represent the corresponding component names:

[0020] 1. Drill rod; 2. Drill tip; 3. Lead screw; 31. Transmission seat; 32. Nut seat; 33. Bearing; 34. Knob; 35. Groove; 36. Slide groove; 37. Slide bar; 38. Storage groove; 4. Sealing cover; 41. Sealing plug; 5. Arc groove. DETAILED DESCRIPTION

[0021] In order to more clearly understand the technical means of the utility model and implement it according to the contents of the specification, the specific implementation methods of the utility model are further described in detail below in conjunction with the drawings and embodiments. The following embodiments are used to illustrate the utility model but are not used to limit the scope of the utility model.

[0022] See attached Figure 1-4 As shown, the drill bit for processing micro holes of the first embodiment includes: a drill rod 1 capable of accommodating the drill bit, one end of the drill rod 1 is open; and a drill tip 2 arranged inside the drill rod 1 and capable of moving along the length direction thereof.

[0023] The drill tip 2 can be stored inside the drill rod 1 when not in use, and the drill rod 1 is used to protect the drill tip 2, thereby protecting the drill tip 2. When it falls accidentally, the impact force generated by the fall can be offset by the drill rod 1 to prevent the drill tip 2 from being broken by the impact, thereby improving the protection capability of the drill tip 2 and reducing the damage rate of the drill bit. No additional protective measures are required during transportation, thereby improving practicality.

[0024] A transmission component capable of controlling the drill bit to move to the outside of the drill rod 1; the transmission component can be used to move the drill tip 2 out of the drill rod 1, thereby facilitating the drilling work of the drill tip 2.

[0025] The sealing cover 4 is used to seal the open end of the drill rod 1 , and the sealing cover 4 can seal the open end of the drill rod 1 , so that dust will not enter the drill tip 2 during transportation, thereby increasing the service life of the drill tip 2 .

[0026] Among them, the transmission assembly includes: a screw 3 rotatably arranged inside the drill rod 1, a receiving groove 38 for the screw 3 to extend is opened inside the drill tip 2; a transmission seat 31 arranged at the rear end of the drill tip 2; and a nut seat 32 fixed inside the transmission seat 31 and threadedly connected to the screw 3.

[0027] When the lead screw 3 rotates, the transmission seat 31 can be driven to move through the threaded seat. Since the transmission seat 31 is fixed to the rear end of the drill tip 2, the drill tip 2 can be driven to reciprocate, thereby realizing the storage and extension of the drill tip 2.

[0028] Furthermore, a bearing 33 whose inner ring is fixed to the lead screw 3 is provided inside the drill rod 1 , and an outer ring of the bearing 33 is fixedly connected to the drill rod 1 .

[0029] The bearing 33 is used to connect the lead screw 3 and the drill rod 1 and increase the stability of the lead screw 3 when it rotates.

[0030] Furthermore, one end of the lead screw 3 passes through the drill rod 1 and is provided with a knob 34 , and the other end of the drill rod 1 is provided with a groove 35 for facilitating the rotation of the knob 34 .

[0031] The groove 35 can facilitate the rotation of the knob 34 , and when the knob 34 is rotated, it is convenient for the operator to rotate the lead screw 3 .

[0032] Furthermore, a plurality of slide grooves 36 are provided at intervals along the length direction of the inner wall of the drill rod 1 , and a plurality of slide bars 37 slidably connected to the slide grooves 36 are provided on the transmission seat 31 .

[0033] The slide bar 37 can move inside the slide groove 36. The slide bar 37 and the slide groove 36 can not only limit the moving transmission seat 31, but also increase its movement stability and prevent the drill tip 2 from being retracted into the drill rod 1 due to rotation during operation.

[0034] Furthermore, the transmission seat 31 and the drill tip 2 are integrally formed.

[0035] When processing the drill tip 2 and the transmission seat 31 , a high-precision CNC machine tool can be used to realize integrated molding, thereby improving production efficiency.

[0036] Furthermore, the sealing cover is provided with a sealing plug 41 which can extend into the interior of the drill rod 1, and the sealing plug 41 is made of rubber.

[0037] The sealing plug 41 made of rubber material can be used to fix the sealing cover on the drill rod 1 and can increase the sealing performance to a certain extent.

[0038] Furthermore, two opposite arc-shaped grooves 5 are formed on the outer surface of the drill rod 1 .

[0039] The drill rod 1 can be arranged in an elliptical shape by the arc grooves 5 arranged opposite to each other, so as to facilitate the clamping of the driving device.

[0040] Furthermore, the drill tip 2 and the lead screw 3 are both located on the central axis of the drill rod 1 .

[0041] Because they are located on the same central axis, assembly is more convenient and quick.

[0042] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. It should be pointed out that a person skilled in the art can make several improvements and modifications without departing from the technical principle of the present invention, and these improvements and modifications should also be regarded as within the protection scope of the present invention.

Claims

1. A drill bit for processing micro holes, characterized in that: include: A drill rod (1) capable of accommodating a drill bit, wherein one end of the drill rod (1) is open; A drill tip (2) disposed inside the drill rod (1) and capable of moving along the length direction thereof; A transmission assembly capable of controlling the drill bit to move to the outside of the drill rod (1); A sealing cover (4) for sealing the opening of the drill pipe (1); The transmission assembly comprises: a lead screw (3) rotatably arranged inside the drill rod (1); a receiving groove (38) for the lead screw (3) to extend is provided inside the drill tip (2); a transmission seat (31) arranged at the rear end of the drill tip (2); and a nut seat (32) fixed inside the transmission seat (31) and threadedly connected to the lead screw (3).

2. The micro-hole processing drill according to claim 1, characterized in that: A bearing (33) whose inner ring is fixed to the lead screw (3) is provided inside the drill rod (1), and an outer ring of the bearing (33) is fixedly connected to the drill rod (1).

3. The drill bit for processing micro holes according to claim 1, characterized in that: One end of the lead screw (3) passes through the drill rod (1) and is provided with a knob (34), and the other end of the drill rod (1) is provided with a groove (35) for facilitating the rotation of the knob (34).

4. The micro-hole processing drill according to claim 1, characterized in that: The inner wall of the drill rod (1) is provided with a plurality of slide grooves (36) spaced apart along its length direction, and the transmission seat (31) is provided with a plurality of slide bars (37) slidably connected to the slide grooves (36).

5. The drill bit for processing micro holes according to claim 1, characterized in that: The transmission seat (31) and the drill tip (2) are integrally formed.

6. The drill bit for processing micro holes according to claim 1, characterized in that: The sealing cover is provided with a sealing plug (41) capable of extending into the interior of the drill rod (1), and the sealing plug (41) is made of rubber material.

7. The drill bit for processing micro holes according to claim 1, characterized in that: The outer surface of the drill rod (1) is provided with two opposite arc-shaped grooves (5).

8. The drill bit for processing micro holes according to claim 1, characterized in that: The drill tip (2) and the lead screw (3) are both located on the central axis of the drill rod (1).

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