CN216632705U - Drill bit of miniature size drilling processing - Google Patents

Abstract

The utility model discloses a drill bit for micro-size drilling, which comprises an installation cover for installing the drill bit, wherein the bottom of the installation cover is rotatably connected with a rotating shaft through a rotating piece, the rotating piece is connected outside the rotating shaft, the peripheral surface of the rotating piece is connected with a first drill bit body, a second drill bit body, a third drill bit body and a fourth drill bit body, and a fastening bolt is connected between the installation cover and the rotating piece. Through unscrewing fastening bolt, with rotor clockwise rotation 90 degrees, can rotate the second bit body to down, with rotor clockwise rotation 180 degrees, can rotate the third bit body to down, rotor clockwise rotation 270 degrees can rotate the fourth bit body to down, it is fixed through fastening bolt to rotate the piece after will rotating, thereby can realize processing the hole in different apertures, can realize processing the hole in different apertures through the drilling equipment of a specification, thereby use cost is lower.

Description

Drill bit of miniature size drilling processing

Technical Field

The utility model relates to the field of drill bits, in particular to a drill bit for micro-size drilling.

Background

The drill bit types are 6: twist drill, flat drill, deep hole drill, expanding drill, counter bit and center drill. Twist drills are the most widely used hole machining tools. The cutting part of the flat drill is in a shovel shape, the structure is simple, the manufacturing cost is low, the cutting fluid is easily guided into the hole, but the cutting and chip removal performance is poor.

The prior art has the following defects: most of the drill bits in the prior art are drill bits of one specification and are provided with drill bits of one specification, and when holes with different hole diameters need to be machined, different drill devices need to be replaced, so that the drilling cost is high.

Disclosure of Invention

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: the utility model provides a drill bit of miniature size drilling processing, includes the installation cover that the installation drill bit was used, installation cover bottom is rotated through rotating and is connected with the pivot, the pivot external connection has a rotation piece, it is connected with first drill bit body, second drill bit body, third drill bit body and fourth drill bit body to rotate the piece outer peripheral face, be connected with fastening bolt between installation cover and the rotation piece.

Preferably, the outer diameter of the first bit body is smaller than the outer diameter of the second bit body, the outer diameter of the second bit body is smaller than the outer diameter of the third bit body, and the outer diameter of the third bit body is smaller than the outer diameter of the fourth bit body.

Preferably, an included angle between the first drill bit body and the second drill bit body, an included angle between the second drill bit body and the third drill bit body, and an included angle between the third drill bit body and the fourth drill bit body are all 90 degrees.

Preferably, one side of the bottom of the installation cover is connected with a first positioning strip, one side of the rotating piece, which is close to the first positioning strip, is connected with four second positioning strips, and the included angle between every two adjacent second positioning strips is 90 degrees.

Preferably, four second positioning strips are arranged at the positions of the first drill bit body, the second drill bit body, the third drill bit body and the fourth drill bit body.

Preferably, a threaded hole is formed in one side of the rotating part, any two adjacent threaded holes form an included angle of 90 degrees, and the fastening bolt is connected in the threaded hole in the corresponding position in a threaded mode.

Compared with the prior art, the utility model has the following beneficial effects: screw down fastening bolt, with rotor clockwise rotation 90 degrees, can rotate the second bit body to down, with rotor clockwise rotation 180 degrees, can rotate the third bit body to down, rotor clockwise rotation 270 degrees can rotate the fourth bit body to down, it is fixed through fastening bolt to rotate the piece after will rotating, thereby can realize processing the hole in different apertures, can realize processing the hole in different apertures through the drilling equipment of a specification, thereby use cost is lower.

Drawings

Fig. 1 is a schematic view of the overall structure of the present invention.

Fig. 2 is a cross-sectional view of the mounting cup of fig. 1 in accordance with the present invention.

Fig. 3 is a schematic structural diagram of a rotary member, a first drill body, a second drill body, a third drill body, and a fourth drill body according to the present invention.

FIG. 4 is a rotation diagram of FIG. 1 according to the present invention.

Wherein, the names corresponding to the reference numbers are:

1. mounting a cover; 2. a rotating shaft; 3. a rotating member; 4. a first bit body; 5. a second bit body; 6. a third bit body; 7. a fourth bit body; 8. fastening a bolt; 9. a threaded hole; 10. a first positioning bar; 11. a second positioning bar; 12. a connecting head.

Detailed Description

The present invention will be further described with reference to the following description and examples, which include but are not limited to the following examples.

Referring to fig. 1 to 4 of the brief description, a drill for micro-scale drilling includes an installation cover 1 for installing the drill, a rotating shaft 2 rotatably connected to the bottom of the installation cover 1 through a rotating member 3, the rotating member 3 connected to the outside of the rotating shaft 2, a first drill body 4, a second drill body 5, a third drill body 6 and a fourth drill body 7 connected to the outer peripheral surface of the rotating member 3, and a fastening bolt 8 connected between the installation cover 1 and the rotating member 3.

Further, the outer diameter of the first bit body 4 is smaller than that of the second bit body 5, the outer diameter of the second bit body 5 is smaller than that of the third bit body 6, and the outer diameter of the third bit body 6 is smaller than that of the fourth bit body 7; the first drill bit body 4, the second drill bit body 5, the third drill bit body 6 and the fourth drill bit body 7 facilitate the machining of holes with different bore diameters.

Furthermore, an included angle between the first drill bit body 4 and the second drill bit body 5, an included angle between the second drill bit body 5 and the third drill bit body 6, and an included angle between the third drill bit body 6 and the fourth drill bit body 7 are all 90 degrees, one side of the bottom of the mounting cover 1 is connected with a first positioning strip 10, one side of the rotating member 3, which is close to the first positioning strip 10, is connected with four second positioning strips 11, an included angle between any two adjacent second positioning strips 11 is 90 degrees, the four second positioning strips 11 are all arranged at the positions of the first drill bit body 4, the second drill bit body 5, the third drill bit body 6 and the fourth drill bit body 7, a threaded hole 9 is formed in one side of the rotating member 3, an included angle between any two adjacent threaded holes 9 is 90 degrees, and a fastening bolt 8 is in the threaded hole 9 at the corresponding position; the initial first locating strip 10 aligns with the second locating strip 11 of the first drill bit body 4, when the second drill bit body 5 needs to be used, the rotor is rotated clockwise to enable the second locating strip 11 of the second drill bit body 5 to align with the first locating strip 10, so that the second drill bit body 5 faces downwards, the first locating strip 10 and the four second locating strips 11 are arranged to facilitate locating treatment of the first drill bit body 4, the second drill bit body 5, the third drill bit body 6 and the fourth drill bit body 7, the first drill bit body 4, the second drill bit body 5, the third drill bit body 6 and the fourth drill bit body 7 are arranged downwards, and further the fastening bolt 8 is screwed into the threaded hole 9 in the corresponding position.

The drill for micro-size drilling comprises a tool shank clamping part, a transition supporting part, a drill pattern part and a cutting part; a knife handle clamping part: the clamping fixture is mainly a tungsten steel round handle and is used for clamping various machine tool chucks; a transition support part: the tungsten steel circular shank part and the transition support part of the actual cutting part of the drill bit are linked by a cylindrical tungsten steel bar which is not grooved, and the overall style and the size of a root arc are generally determined by a forming grinding wheel; drill bit style part: the drill bit style is generally determined by the length of the cross edge, the grooving angle, the difference between the groove width and the groove width, the feed angle, the R value of the groove bottom, the transition edge form, the size of the transition edge, the third surface inclination angle, the Gash type and parameters; cutting part: the tungsten steel round bar is firstly controlled into a micro cylindrical bar with extremely high precision by an excircle process, then the length which is several times or even tens of times of the diameter of the round bar is ground by a special program grinding wheel according to a special slotting control program of a micro drill by a program, the chip removal size which is similar to the fine grinding and polishing of the grinding wheel to the second part of a grinding groove can be several times or even tens of times of the processing diameter, and meanwhile, the thickness and the taper of a core are confirmed according to the whole size, so that the slotting of a cutter is in a forward conical shape and is upwards coiled, the whole strength is ensured, and the slotting processing integrity is also considered; different materials have different deflection angles of the grinding wheel, so that different integral deflection angles of the cutter can be obtained.

The implementation mode is as follows:

the mounting cover 1 is mounted at the bottom of the drilling equipment through a connector 12, because the rotator is fixed with the mounting cover 1 through a fastening bolt 8, the first drill bit body 4, the second drill bit body 5, the third drill bit body 6 and the fourth drill bit body 7 can be fixed, drilling can be realized through the first drill bit body 4, when holes with different apertures need to be drilled, the fastening bolt 8 is unscrewed, at the moment, the rotator, the first drill bit body 4, the second drill bit body 5, the third drill bit body 6 and the fourth drill bit body 7 can realize rotation through a rotating shaft 2, the rotator is rotated clockwise by 90 degrees, the second drill bit body 5 can be rotated downwards, the rotator is rotated clockwise by 180 degrees, the third drill bit body 6 can be rotated downwards, the rotator is rotated clockwise by 270 degrees, the fourth drill bit body 7 can be rotated downwards, the rotated rotator 3 is fixed through the fastening bolt 8, therefore, holes with different apertures can be processed, and holes with different apertures can be processed by drilling equipment with one specification, so that the use cost is low.

The drilling equipment that this scheme had solved prior art that prior art exists is the drilling bit that the drilling equipment of a specification is equipped with a specification mostly, when the hole of different apertures of needs processing, needs to change different drilling equipment to lead to the higher problem of cost of drilling.

The above-mentioned embodiment is only one of the preferred embodiments of the present invention, and any insubstantial changes or modifications made within the spirit and scope of the main design of the present invention will solve the technical problems consistent with the present invention and shall be included in the scope of the present invention.

It is noted that, in this document, relational terms such as first and second, and the like, if any, are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.

Claims (6)

1. The utility model provides a drill bit of miniature size drilling processing, includes installation cover (1) that the installation drill bit was used, its characterized in that, installation cover (1) bottom is rotated through rotating (3) and is connected with pivot (2), pivot (2) external connection has a rotation piece (3), it is connected with first drill bit body (4), second drill bit body (5), third drill bit body (6) and fourth drill bit body (7) to rotate piece (3) outer peripheral face, be connected with fastening bolt (8) between installation cover (1) and the rotation piece (3).

2. The drill for micro-scale drilling according to claim 1, wherein the first drill body (4) has an outer diameter smaller than that of the second drill body (5), the second drill body (5) has an outer diameter smaller than that of the third drill body (6), and the third drill body (6) has an outer diameter smaller than that of the fourth drill body (7).

3. The drill bit for micro-scale drilling according to claim 1, wherein the included angle between the first drill bit body (4) and the second drill bit body (5), the included angle between the second drill bit body (5) and the third drill bit body (6), and the included angle between the third drill bit body (6) and the fourth drill bit body (7) are all 90 degrees.

4. The drill bit for micro-scale drilling according to claim 1, wherein a first positioning bar (10) is connected to one side of the bottom of the mounting cover (1), four second positioning bars (11) are connected to one side of the rotating member (3) close to the first positioning bar (10), and an included angle between any two adjacent second positioning bars (11) is 90 degrees.

5. The drill bit for micro-scale drilling according to claim 4, wherein four second positioning strips (11) are provided at the positions of the first drill bit body (4), the second drill bit body (5), the third drill bit body (6) and the fourth drill bit body (7).

6. The drill bit for micro-size drilling according to claim 1, wherein a threaded hole (9) is formed in one side of the rotating member (3), an included angle between any two adjacent threaded holes (9) is 90 degrees, and the fastening bolt (8) is in threaded connection with the threaded hole (9) in the corresponding position.

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