CN205464475U

CN205464475U - PCD spiral bulb sword

Info

Publication number: CN205464475U
Application number: CN201620301086.6U
Authority: CN
Inventors: 戴鹏; 陈波
Original assignee: Dongguan Fullanti Tools Co Ltd
Current assignee: Dongguan Fullanti Tools Co Ltd
Priority date: 2016-04-11
Filing date: 2016-04-11
Publication date: 2016-08-17
Anticipated expiration: 2026-04-11

Abstract

The utility model relates to a PCD spiral bulb sword, including handle of a knife and integrated into one piece in the cutting portion of the one end of handle of a knife, the handle of a knife has same rotation center axle with cutting portion, offering the spiral chip groove of two inversion symmetries around the rotation center axle in the cutting portion, keeping away from the handle of a knife in the cutting portion and be equipped with arc chamfer and two spigot surfaces, the acute angle setting is personally submitted to two direction, lies in in the cutting portion that the symmetry is equipped with two arc cutting faces between two spigot surfaces, the one section cutting portion that keeps away from the handle of a knife is PCD material, the cutting portion and the surplus section cutting portion welding of this section PCD material. Above -mentioned PCD spiral bulb sword structural design is reasonable, and the spiral chip groove through being equipped with two inversion symmetries and the cutting portion in two arc cutting faces realize carrying out efficient drilling operation to the work piece, and in drilling process, the cutting portion of one section PCD material is minimum with metal material's compatibility, difficultly glues the bits phenomenon because of drilling produces, difficult wearing and tearing and process the size precision and the smooth finish preferred in aperture.

Description

PCD spiral ball head knife

Technical field

This utility model relates to a kind of ball head knife, particularly relates to a kind of PCD spiral ball head knife.

Background technology

In the last few years, along with the development of science and technology, machinery manufacturing industry is also more and more higher to the requirement of machining accuracy, Drill bit is as a kind of machining Common Use Tools, and its structure not only decides the intensity of self, service life, Further determine error size and the precision height getting out workpiece hole.

At space flight, aviation, military project, automotive field, use composite in a large number, the size to processing aperture Precision and smoothness requirements are higher, require the technology of process tool itself simultaneously and service life is more and more higher, Although the processing of existing carbide drill can meet means suitable, but very fast because of abrasion in the course of processing, The aperture size concordance causing product is the best, and fraction defective is higher.Further, since existing drill bit structure sets Count unreasonable, affect self intensity and service life.

Utility model content

Based on this, it is necessary to for the problems referred to above, it is provided that a kind of reasonable in design, the most easy to wear and processing The dimensional accuracy in aperture and fineness preferably PCD spiral ball head knife.

A kind of PCD spiral ball head knife, including the cutting portion of handle of a knife He the one end being shaped in described handle of a knife； Described handle of a knife and described cutting portion have same center of rotation axle；Open around center of rotation axle on described cutting portion It is provided with the spiral type chip area of two reverse symmetry, described cutting portion is provided with arc angling away from described handle of a knife With two spigot surfaces, two spigot surface settings at an acute angle, right between two spigot surfaces on described cutting portion Claim to be provided with two arc milling faces；One section of cutting portion away from described handle of a knife is PCD material, this section of PCD The cutting portion of material welds with residue section cutting portion.

Wherein in an embodiment, the outer surface of described handle of a knife has thermal dispersant coatings.

Wherein in an embodiment, the outer surface of described cutting portion has titanium carbonitride layer.

Wherein in an embodiment, the outer surface of described cutting portion has aluminium nitride titanium layer.

Wherein in an embodiment, described PCD spiral ball head knife offers and runs through described handle of a knife and described The heat radiation duct of cutting portion, two spigot surfaces all offer several louvres connecting described heat radiation duct.

Above-mentioned PCD spiral ball head knife reasonable in design, by being provided with the spiral type chip removal of two reverse symmetry The cutting portion in groove and two arc milling faces realizes workpiece being carried out efficient drilling operation, at boring procedure In, the cutting portion of one section of PCD material is minimum with the affinity of metal material, is difficult to because boring produces viscous bits now As, the most easy to wear and dimensional accuracy in processing aperture and fineness are preferable.

Accompanying drawing explanation

Fig. 1 is the structural representation of the PCD spiral ball head knife of this utility model one preferred embodiment；

Fig. 2 is the top view of PCD spiral ball head knife shown in Fig. 1.

Detailed description of the invention

For the ease of understanding this utility model, below with reference to relevant drawings, this utility model is carried out more comprehensively Description.Accompanying drawing gives preferred embodiment of the present utility model.But, this utility model can be to be permitted The most different forms realizes, however it is not limited to embodiment described herein.On the contrary, provide these to implement The purpose of example is to make the understanding to disclosure of the present utility model more thorough comprehensively.

As depicted in figs. 1 and 2, the PCD (Polycrystalline of this utility model one preferred embodiment Diamond, polycrystalline diamond) spiral ball head knife 10, including handle of a knife 11 be shaped in the one of handle of a knife 11 The cutting portion 12 of end.Handle of a knife 11 and cutting portion 12 have same center of rotation axle 20.Enclose on cutting portion 12 The first spiral type chip area 121 and the second spiral type row of two reverse symmetry is offered around center of rotation axle 20 Bits groove 122.On cutting portion 12, the position away from handle of a knife 11 is provided with arc angling 123 and the first guiding Face 124 and the second spigot surface 125, the first spigot surface 124 and the second spigot surface 125 setting at an acute angle.Compare Significantly protrude on rose cutter of the prior art and be provided with multiple cutter tip, at high-speed rotation In, for milling workpiece, cause the problem that cutter tip abrasion is the most serious, in the present embodiment, cut Cut and between the first spigot surface 124 and the second spigot surface 125, be symmetrically arranged with the first arc milling in portion 12 Face 126 and the second arc milling face 127.In the present embodiment, the first arc milling face 126 and the second arc are cut Bevel 127 is 6 degree～10 degree with the angle of center of rotation axle 20.In other embodiments, the first arc is cut The corner dimension of bevel 126 and the second arc milling face 127 and center of rotation axle 20 can also be answered according to reality Need carry out accommodation.

One section of cutting portion away from handle of a knife 11 is PCD (Polycrystalline Diamond, polycrystalline diamond) Material, the cutting portion of this section of PCD material welds with residue section cutting portion.In order to express easily, will be far from The cutting portion of one section of PCD material of handle of a knife 11 is defined as the first cutting portion 13, will weld with the first cutting portion 13 The residue section cutting portion connect is defined as the second cutting portion 14.

Above-mentioned PCD spiral ball head knife 10 reasonable in design, by being provided with the spiral type of two reverse symmetry The cutting portion 12 in chip area and two arc milling faces realizes workpiece is carried out efficient drilling operation, is boring During hole, the cutting portion of one section of PCD material is minimum with the affinity of metal material, is difficult to because boring produces Viscous bits phenomenon, the most easy to wear and dimensional accuracy in processing aperture and fineness are preferable.

In order to play thermolysis, such as, the outer surface of cutting portion 12 has titanium carbonitride layer, and for example, The outer surface of cutting portion 12 has aluminium nitride titanium layer.The outer surface of handle of a knife 11 has thermal dispersant coatings.

In order to cutting portion 12 heat of generation when workpiece is carried out milling is distributed timely and effectively, PCD The heat radiation duct running through handle of a knife 11 and cutting portion 12, the first spigot surface 124 is offered on spiral ball head knife 10 With all offer on the second spigot surface 125 several connect heat radiation duct louvre.

Embodiment described above only have expressed several embodiments of the present utility model, its describe more concrete and In detail, but therefore can not be interpreted as the restriction to utility model patent scope.It should be pointed out that, it is right For those of ordinary skill in the art, without departing from the concept of the premise utility, it is also possible to do Going out some deformation and improvement, these broadly fall into protection domain of the present utility model.Therefore, this utility model is special The protection domain of profit should be as the criterion with claims.

Claims

1. a PCD spiral ball head knife, it is characterised in that include handle of a knife and be shaped in described handle of a knife The cutting portion of one end；Described handle of a knife and described cutting portion have same center of rotation axle；On described cutting portion The spiral type chip area of two reverse symmetry is offered, away from described on described cutting portion around center of rotation axle Handle of a knife is provided with arc angling and two spigot surfaces, two spigot surface settings at an acute angle, and described cutting portion is positioned at Two arc milling faces it are arranged with between two spigot surfaces；One section of cutting portion away from described handle of a knife is PCD Material, the cutting portion of this section of PCD material welds with residue section cutting portion.

PCD spiral ball head knife the most according to claim 1, it is characterised in that outside described handle of a knife Surface-coated has thermal dispersant coatings.

PCD spiral ball head knife the most according to claim 2, it is characterised in that described cutting portion Outer surface has titanium carbonitride layer.

PCD spiral ball head knife the most according to claim 2, it is characterised in that described cutting portion Outer surface has aluminium nitride titanium layer.

5. according to the PCD spiral ball head knife described in claim 3 or 4, it is characterised in that described PCD Offer the heat radiation duct running through described handle of a knife and described cutting portion, on spiral ball head knife on two spigot surfaces all Offer several louvres connecting described heat radiation duct.