CN204308265U

CN204308265U - Aperture knife tool

Info

Publication number: CN204308265U
Application number: CN201420778084.7U
Authority: CN
Inventors: 不公告发明人
Original assignee: Shanghai Ruihao Information Technology Co Ltd
Current assignee: SHANGHAI NAGOYA PRECISION TOOLS Co.,Ltd.
Priority date: 2014-12-10
Filing date: 2014-12-10
Publication date: 2015-05-06
Anticipated expiration: 2024-12-10

Abstract

A kind of aperture knife tool, comprise cell body and cutting portion, cutting portion comprises body and paster, and along cutting portion axially, the axial length of paster accounts for the length more than 50% of body, and paster side is circular arc, connects with the outer rim of body.The utility model cutter, adopts the rotating eccentricity that diamond paster be compensate for the asymmetric caused aperture knife tool of paster in the technological means that axial direction extends.Excircle part plays support and the hinge light action in hole in cutting, and can be not only that hole wall is more smooth, more cutting portion termination provides excellent support, compensate for eccentric error, provides high-quality hole machined quality.

Description

Aperture knife tool

Technical field

The utility model relates to a kind of process tool being applicable to commercial Application, particularly relates to a kind of aperture knife tool, carries out Drilling operation to workpiece.

Background technology

Cutter is the instrument for machining in machine-building, also known as cutting element.Cutter due to the overwhelming majority is that machine is used, substantially all for cutting metal material, so " cutter " one word be generally just interpreted as metal cutting tool.But material science develops, various material is also able to extensive use in the production and processing of product, as: engineering plastics and carbon fibre composite etc. (CN203401118U).Cutter can be divided into by the form of workpiece machining surface: process the cutter of various outer surface, aperture knife tool, threading tool, gear cutting tool and cutting off tool etc. several.

Aperture knife tool is that a class goes out through hole or blind hole in order to drilling on solid material, and can carry out the cutter of reaming to existing hole.Its frequent species is as fluted drill, chit drill, depth drill, reamer and centre drill etc.

In order to increase the wearability of cutting edge, usually stick diamond paster at hole cutting portion.General diamond (as: PCD) drill bit, when adopting single-blade to cross the PCD paster in axle center, can cause drill bit asymmetric, centering is unfavorable for when High Rotation Speed, easily cause the partially curved of machining hole, therefore generally all adopt twolip paster, and axle center only.

Utility model content

The purpose of this utility model is to provide a kind of aperture knife tool, solves single point diamond cutter because of paster and crosses the asymmetric caused rotating eccentricity problem caused in axle center.

A kind of aperture knife tool that the utility model provides, comprises cell body and cutting portion.Cutting portion comprises body and paster, and paster is located at body, and prolongs and the termination of cutting portion.Along the radial direction of body, the axle center of body is crossed in paster side, and opposite side is the circular arc of diameter 2mm ± 0.05mm, connects with the outer rim of body; Along the axis of body, the axial length of paster account for body shaft to length more than 50%, as: but be not limited only to 50%-90%.

For realizing the processing of different pore morphology workpiece, the radius of curvature of the circular arc of paster side and the radius of curvature of body outer rim identical or different.

The various aperture knife tools that the utility model provides, also comprise transition part, are connected with cutting portion, for being connected between cutting portion with various outer diameter parts (as: shank).

The aperture knife tool that the utility model provides goes for carrying out hole machined to metal, nonmetal, one or more workpiece made such as engineering plastics, composite fibre and cermet.

The metal that the utility model is mentioned is a kind of material, its contain free electron and there is gloss (namely to visible ray strong reflection), be rich in ductility, the easy character such as conduction, heat conduction.These materials or be mainly simple substance (both comprised and be recorded in the periodic table of elements, and also comprised thus obtained), or primarily of the alloy of several formation, common as: but be not limited only to carbon steel, aluminium alloy, copper alloy and kirsite etc.Be to be understood that, mainly refer to that this kind of material accounts for the overwhelming majority, but do not get rid of the situation that it has the compound form existence such as such as small amounts thing, sulfide and chloride.

The nonmetallic materials mentioned of the utility model as: but be not limited only to plastics, glass, composite fibre and cermet etc.

The engineering plastics that the utility model is mentioned, refer to that a class can as structural material, mechanical stress is born in wider temperature range, the high performance macromolecular material used in comparatively harsh Chemical Physics environment, there are good mechanical performance and dimensional stability, still its premium properties can be kept under high and low temperature, can as the plastics of engineering structure part.Common as: but be not limited only to Merlon, polyamide, polyimides, polyformaldehyde, sex change polyphenylene oxide, polyphenylene sulfide, poly-aryl ester, unsaturated polyester (UP), phenola plastics, epoxy plastics and Acrylic plastic etc.

The fibrous composite that the utility model is mentioned, be a kind of matrix by continuous phase and formed by the phase reinforcement that matrix contains, wherein with materials such as glass fibre, carbon fiber, boron fibre, aramid fiber, silicon carbide fibre, asbestos fibre, whisker, wire and hard particulates for the compounded material of reinforcement.The matrix material often had as: but be not limited only to synthetic resin, rubber, pottery, graphite, carbon, aluminium, magnesium, copper, titanium and titanium alloys etc., but especially carbon fibre composite.

The cermet that the utility model is mentioned is the composite that a class is made up of with Metal Phase or alloy one or more ceramic phases, its cermet that pottery substantially can be divided into be matrix and take Metal Phase as the cermet of matrix.Ceramic phase generally refers to refractory oxide (as: but being not limited only to aluminium oxide, beryllium oxide, magnesia and zirconia etc.) and infusible compound (as: but being not limited only to titanium carbide, tungsten carbide, ramet, boron carbide, zirconium diboride, titanium diboride and tantalum diboride etc.).Metal Phase then mainly transition elements (as: iron, cobalt, nickel, chromium, molybdenum, tungsten, vanadium, niobium and tantalum etc.) or their alloy.Ceramic phase accounts for 15% ~ 85% of volume wherein.

Common pottery is that the cermet of matrix is as oxide base cermet, for matrix with aluminium oxide, zirconia, magnesia, beryllium oxide and thorium oxide etc., the material (as: aluminium oxide-tungsten-chromium cermet, zirconia-titanium, alumina-silica magnesium-iron, aluminium oxide-molybdenum and thorium oxide-titanium oxide-chromium-molybdenum etc.) that they and tungsten, chromium or cobalt etc. are combined into, has high temperature resistant, the advantage such as chemical resistance of concrete, high mechanical properties and good heat conductive performance; Carbide-base ceramics is bondd by carbide (as: titanium carbide, carborundum and tungsten carbide etc.) and metal to form; Nitride based cermet, has superhard, thermal shock resistance and good high temperature creep, as: titanium nitride, boron nitride, silicon nitride and tantalum nitride etc., and silicide based ceramic metal and boride-base cerment etc.

The beneficial effect that technical solutions of the utility model realize:

The aperture knife tool that the utility model provides, adopts the rotating eccentricity that diamond paster be compensate for the asymmetric caused aperture knife tool of paster in the technological means that axial direction extends.Also cylindricalo grinding is carried out to the peripheral edge portion of diamond paster, obtain the part of complete circular arc type.Hardness is played in cutting support and the hinge light action in hole higher than the excircle part that the diamond (as: PCD) of carbide alloy is formed, can be not only that hole wall is more smooth, more cutting portion termination provides excellent support, compensate for eccentric error, high-quality hole machined quality is provided.

Accompanying drawing explanation

Fig. 1 is the structural representation of the utility model aperture knife tool one embodiment;

Fig. 2 is the structure for amplifying schematic diagram of another angle of cutter shown in Fig. 1.

Detailed description of the invention

The technical solution of the utility model is described in detail below in conjunction with accompanying drawing.The utility model embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify to the technical scheme of utility model or equivalent replacement, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in right of the present utility model.

Fig. 1 and Fig. 2 is the structural representation of the present embodiment aperture knife tool one embodiment.Shown in Fig. 1, cutting portion 100 is connected with shank 400 by transition part 300.Cutting portion 100 comprises paster 120 and body 110, and paster 120 prolongs and the termination 130 of cutting portion.It is cell body 200 between paster and body.

Along the radial direction of body 110, the axle center of body is crossed in paster side 121, and opposite side 122 is circular arc, connects with the outer rim of body.The diameter D of circular arc is 2mm ± 0.05mm, and the radius of curvature of its radius of curvature and body outer rim is identical or different, to adapt to the processing of different pore morphology workpiece.

Along the axis of body 110, the axial length M of paster 120 accounts for the length N more than 50% of body 110 axis, as: but be not limited only to 50%-90%.

The present embodiment is obtained the performance that aperture knife tool and Double edge diamond drilling bit process same material to be shown in Table 1.

Table 1

	Linearity	Fineness	The processing duration
				Twolip PCD bores	—0.02	Ra0.02	95min
The present embodiment	—0.007	Ra0.005	80min

Claims

1. an aperture knife tool, comprises cell body and cutting portion, it is characterized in that

Cutting portion comprises body and paster;

Along cutting portion axially, the axial length of paster accounts for the length more than 50% of described body,

Along the radial direction of described body, the axle center of described body is crossed in described paster side, and opposite side is circular arc, connects with the outer rim of described body.

2. aperture knife tool according to claim 1, is characterized in that along described cutting portion axially the axial length of described paster accounts for the length 50%-90% of described body.

3. aperture knife tool according to claim 1, is characterized in that described paster is located at described body, and prolongs and the termination of described cutting portion.

4. aperture knife tool according to claim 1, is characterized in that the diameter of described circular arc is 2mm ± 0.05mm.

5. aperture knife tool according to claim 4, is characterized in that the radius of curvature of described circular arc is identical with the radius of curvature of body outer rim.

6. aperture knife tool according to claim 1, characterized by further comprising transition part, is connected with cutting portion, for being connected between cutting portion with various outer diameter parts.