CN207071704U - A kind of drill bit - Google Patents

Abstract

This application discloses a kind of drill bit, and it includes drilling rod；The clamping part of jointed rod one end；The drill lip of the jointed rod other end；And it is arranged at the apex point of drill lip end；Wherein, apex point includes being arranged at the rib tip of drill lip end both sides and the top tip part between rib tip, top tip part protrusion rib tip.The utility model is cooperated by top tip part and rib tip, is drilled beneficial to positioning, guides detritus discharge to a certain degree, simple in construction, easy to use.

Description

A kind of drill bit

Technical field

The application belongs to drilling tool technical field, specifically, is related to a kind of drill bit.

Background technology

Drill bit be on solid material drilling go out through hole or blind hole, and can be to the cutter of existing hole reaming.Drill bit Can be divided into roughing with and fining-off, the drill bit of roughing typically has very big cutting output, so in cutting During can very big abrasion be caused to cutting edge.

Utility model content

In view of this, technical problems to be solved in this application there is provided a kind of drill bit, by setting unique apex point Avoid drill bit mismachining tolerance.

In order to solve the above-mentioned technical problem, this application discloses a kind of drill bit, it includes drilling rod；The folder of jointed rod one end Hold portion；The drill lip of the jointed rod other end；And it is arranged at the apex point of drill lip end；Wherein, apex point includes being arranged at drill lip end The rib tip of portion both sides and the top tip part between rib tip, top tip part protrusion rib tip.

According to the embodiment of the utility model one, wherein above-mentioned drill lip includes multiple helical groove portions and by multiple helical groove portion The spiral blade being correspondingly formed.

According to the embodiment of the utility model one, wherein above-mentioned helical groove portion is connected by upper groove surface and lower groove face radian, on Groove face is recessed, and lower groove face is raised, and upper groove surface curvature is more than lower groove face.

According to the embodiment of the utility model one, wherein above-mentioned spiral blade is included close to the cutting blade face of lower groove face and connection The guiding face in cutting blade face, cutting blade surface chamfer, guiding face cave inward.

According to the embodiment of the utility model one, wherein above-mentioned cutting blade face width is the 1/4 of guiding face width.

According to the embodiment of the utility model one, wherein above-mentioned top tip part protrusion rib tip 1mm ~ 1.3mm.

According to the embodiment of the utility model one, wherein above-mentioned clamping part is provided with keyway.

According to the embodiment of the utility model one, wherein above-mentioned helical groove portion is arranged to two, the spiral shell of corresponding helical groove portion Rotation blade is arranged to one.

According to the embodiment of the utility model one, wherein above-mentioned drilling rod surface has steel seal.

Compared with prior art, the application can be obtained including following technique effect：

1）Top tip part cooperates with rib tip, is drilled beneficial to positioning.

2）Clamping part is convenient to be installed, and drill lip is beneficial to chip removal.

Certainly, implementing any product of the application must be not necessarily required to reach all the above technique effect simultaneously.

Brief description of the drawings

Accompanying drawing described herein is used for providing further understanding of the present application, forms the part of the application, this Shen Schematic description and description please is used to explain the application, does not form the improper restriction to the application.In the accompanying drawings：

Fig. 1 is the drill bit stereogram of the embodiment of the present application；

Fig. 2 is the helical groove portion schematic diagram of the embodiment of the present application；

Fig. 3 is the helical groove portion side view of the embodiment of the present application；

Fig. 4 is the spiral blade schematic diagram of the embodiment of the present application.

Reference

Drilling rod 10, drill lip 20, helical groove portion 21, spiral blade 22, upper groove surface 21a, lower groove face 21b, cutting blade face 22a, lead Draw face 22b, apex point 30, rib tip 31, top tip part 32, clamping part 40, keyway 41, steel seal 50.

Embodiment

Presently filed embodiment is described in detail below in conjunction with drawings and Examples, and thereby how the application is applied Technological means can fully understand and implement according to this to solve technical problem and reach the implementation process of technical effect.

Fig. 1 is refer to, Fig. 1 is the drill bit stereogram of the embodiment of the present application.As illustrated, a kind of drill bit includes drilling rod 10； The clamping part 40 of the one end of jointed rod 10；The drill lip 20 of the other end of jointed rod 10；And it is arranged at the apex point of the end of drill lip 20 30；Wherein, apex point 30 includes being arranged at the rib tip 31 of the end both sides of drill lip 20 and the top tip part 32 between rib tip 31, Top tip part 32 protrudes rib tip 31.In the embodiment of the utility model one, apex point 30 is positioned and drilled using top tip part 32, together When two incline tips 31 coordinate in process positioning support, to a certain degree guide detritus discharge, simple in construction, user Just.

In addition, please continue to refer to Fig. 1, in the embodiment of the utility model one, drill lip 20 includes multiple helical groove portions 21 And the spiral blade 22 being correspondingly formed by multiple helical groove portions 21.The utility model utilizes helical groove portion 21 and the phase of spiral blade 22 Mutually coordinate, realize the feeding and chip removal of drilling, it is simple in construction, it is easy to use.

It is to be understood that in the embodiment of the utility model one, to coordinate accompanying drawing, helical groove portion 21 is arranged to two Individual, the spiral blade 22 of corresponding helical groove portion 21 is arranged to one, in other embodiments, can set helical groove portion 21 For three, the spiral blade 22 of corresponding helical groove portion 21 is arranged to two, and the utility model is not limited.

Next, it is the schematic diagram of helical groove portion 21 of the embodiment of the present application please continue to refer to Fig. 2 and Fig. 3, Fig. 2；Fig. 3 is this Apply for the side view of helical groove portion 21 of embodiment.As illustrated, helical groove portion 21 is connected by upper groove surface 21a and lower groove face 21b radians Connect, upper groove surface 21a depressions, lower groove face 21b is raised, and upper groove surface 21a curvature is more than lower groove face 21b.It is real in the utility model one Apply in mode, during feeding, the upper groove surface 21a of helical groove portion 21 and lower groove face 21b's drill lip 20 will cooperate chip removal. Meanwhile because upper groove surface 21a is recessed, lower groove face 21b is raised, in this way, the detritus being trapped in helical groove portion 21 is also easier to lead Draw, discharge, if upper groove surface 21a and lower groove face 21b are recessed, detritus is easy to block, and influences machining accuracy, serious Words cause bit damage.In addition, upper groove surface 21a sets curvature to be more than lower groove face 21b, test of many times, unnecessary detritus can be more discharged, Convenient operation.

Please continue to refer to Fig. 4, Fig. 4 is the schematic diagram of spiral blade 22 of the embodiment of the present application.Spiral blade 22 includes close Lower groove face 21b cutting blade face 22a and connection cutting blade face 22a guiding face 22b, cutting blade face 22a chamferings, guiding face 22b concave Fall into.In the embodiment of the utility model one, cutting blade face 22a chamferings are that drilling is more smooth, simultaneously in order that it is sharper Guiding face 22b is recessed, convenient feeding, and use is more flexible.

It is noted that cutting blade face 22a width is the 1/4 of guiding face 22b width.It is handsome in appearance, it is easy to use.

Please continue to refer to Fig. 1, it is 1mm ~ 1.3mm that the utility model, which sets the length of the protrusion rib of top tip part 32 tip 33,.By This forms fulcrum, convenient positioning, while is beneficial to processing.In addition, the surface of drilling rod 10 has steel seal 50.It is that can be understood with steel seal 50 Design parameter is indicated, conveniently distinguishes classification.And clamping part 40 is provided with keyway 41, facilitate follow-up equipment to coordinate installation, realize It is fixed.

Some preferred embodiments of the application have shown and described in described above, but as previously described, it should be understood that the application Be not limited to form disclosed herein, be not to be taken as the exclusion to other embodiment, and available for various other combinations, Modification and environment, and above-mentioned teaching or the technology or knowledge of association area can be passed through in application contemplated scope described herein It is modified., then all should be in this Shen and the change and change that those skilled in the art are carried out do not depart from spirit and scope Please be in the protection domain of appended claims.

Claims (9)

1. A kind of 1. drill bit, it is characterised in that including：

   Drilling rod；

   Connect the clamping part of described drilling rod one end；

   Connect the drill lip of the drilling rod other end；And

   It is arranged at the apex point of the drill lip end；

   Wherein, the apex point includes being arranged at the rib tip of drill lip end both sides and top between the rib tip Portion, the top tip part protrude the rib tip.
2. 2. drill bit according to claim 1, it is characterised in that wherein described drill lip includes multiple helical groove portions and by multiple The spiral blade that the helical groove portion is correspondingly formed.
3. 3. drill bit according to claim 2, it is characterised in that wherein described helical groove portion is by upper groove surface and lower groove face radian Connection, the upper groove surface depression, the lower groove face is raised, and the upper groove surface curvature is more than the lower groove face.
4. 4. drill bit according to claim 3, it is characterised in that wherein described helical edges portion is included close to the lower groove face Cutting blade face and the guiding face in the connection cutting blade face, the guiding face cave inward.
5. 5. drill bit according to claim 4, it is characterised in that wherein described cutting blade face width is the guiding face width 1/4。
6. 6. drill bit according to claim 1, it is characterised in that the wherein top tip part protrusion rib tip 1mm ~ 1.3mm。
7. 7. drill bit according to claim 1, it is characterised in that wherein described clamping part is provided with keyway.
8. 8. drill bit according to claim 2, it is characterised in that wherein described helical groove portion is arranged to two, it is corresponding described in The spiral blade of helical groove portion is arranged to one.
9. 9. drill bit according to claim 1, it is characterised in that wherein described drilling rod surface has steel seal.