CN204053047U

CN204053047U - Milling cutter

Info

Publication number: CN204053047U
Application number: CN201420444263.7U
Authority: CN
Inventors: 孙思叡
Original assignee: SHANGHAI JINGREN LASER TECHNOLOGY Co Ltd
Current assignee: Shanghai Nagoya Precision Tools Co ltd
Priority date: 2014-08-07
Filing date: 2014-08-07
Publication date: 2014-12-31
Anticipated expiration: 2024-08-07

Abstract

A kind of milling cutter, comprises a shank, its clamping for milling cutter, cutting portion and at least two cell bodies.Cutting portion at least comprises two pieces of blades, and blade comprises one section of continuous print curve sword, arranges the starting point of curve sword in the end close to cutting portion.The utility model milling cutter is the metal of non-laminated and the continuous Milling Machining of nonmetallic materials material and design specially, can make cutter process such special be cut material time service life greatly extend, cut down finished cost.

Description

Milling cutter

Technical field

The utility model relates to a kind of process tool being applicable to industry and cutting, and particularly relates to a kind of milling cutter, is applicable to the cutting of processing metal, engineering plastics and fibrous composite, with raising working (machining) efficiency.

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.

The component of Milling Machining in field of machining is becoming more and more important, progressively instead of other processing modes such as car, brill to a certain extent.Due to the extensive diversity of Milling Machining, except the metal materials such as traditional steel and cast iron, increasing novel metal/nonmetallic materials are also progressively included into the row of the machined material of Milling Machining, this wherein not only comprises the various metal alloys of aluminium-containing alloy, also comprise the various resin materials of high-grade engineering plastics, and various carbon fibre composite is in interior carbon fiber metal composite plate.

In Milling Process, difficulty is only with one, cutter is realized carrying out Continuous maching to the material that is cut of two or more dissimilar material properties simultaneously the most.Such as: the pure nickel of the vermicular cast iron of string milling high rigidity and very easily cold welding, the cutting edge that the former needs circle blunt is to overcome rigidity, and the latter needs sharp cutting edge to bend and stretch intensity to overcome, and avoids cold welding.And for example: string milling silumin and cermet, the former needs the high-speed cutting of large relief angle cutting edge to reduce processing deformation, and the latter needs large anterior angle low speed to process to ensure surface to be machined integrality.

Processing request like this makes the difficulty of tool selection greatly strengthen.Reality processing in, for this type of processing milling cutter consumption often much larger than processing conventional material, even occurred that one only can process the extreme case of tens workpiece cutter.In such case, the producer has the production cost of more than 10% to be consumption aspect for cutter.

As can be seen here, can the importance of milling cutter quality from this kind of processing mode saliency out, become and complete Milling Machining fast and efficiently, the key factor reducing costs and increase the benefit.Milling cutter is that a class is for Milling Process, the rotary cutter with one or more cutter tooth, be mainly used in occasions such as processing plane, step, groove, profiled surface and cut-out workpiece, during work, each cutter tooth (sword) cuts the surplus of workpiece successively off and on.

For this reason, people have to again design accordingly cutting tool, with the needs making cutting tool be adapted to plastics on new materials processing technology.On the one hand, cutter life is extended, avoid tipping and fracture wait likely defective work piece accident generation, to cut down finished cost; On the other hand, the rhythm of production of machining, efficiency and product stability is made to be improved.

Utility model content

An object of the present utility model is to provide a kind of milling cutter, the metal (comprising alloy) of non-laminated and the continuous Milling Machining of non-metallic material can be applicable to, cutter can being made greatly to extend the service life when processing such material, cutting down finished cost.

Another object of the present utility model is to provide a kind of milling cutter, and the heat dispersion of cutter is improved, and reduces the generation twining bits phenomenon, and the metal (comprising alloy) be beneficial to non-laminated carries out continuous Milling Machining with nonmetallic materials material.

Another object of the present utility model is to provide a kind of milling cutter, to realize the chip of continuous print point to workpiece, remove the manual maintenance to cutter from, to improve the efficiency of carrying out continuous Milling Machining of metal (comprising alloy) to non-laminated and nonmetallic materials material.

" non-laminated " that the utility model is mentioned should be understood to, arrangement position between two kinds of materials, cuts with milling cutter the relativeness that (processing) formed, such as: two kinds of stacked up and down materials, when milling cutter laterally adds man-hour from left to right, it is stacked; When milling cutter first straight-cut upper strata material from top to bottom, then when cutting underlying layers, it is non-laminated.Two kinds of materials as: but be not limited only to a kind of metal and another kind of metal, or a kind of nonmetallic materials and another kind of non-metallic material, or a kind of metal and a kind of non-metallic material etc.

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 milling cutter that the utility model provides, comprises a shank, and it is for the clamping of milling cutter, cutting portion and at least two cell bodies.Cutting portion at least comprises two pieces of blades, and this blade comprises one section of continuous print curve sword, arranges the starting point of curve sword in the end close to cutting portion.

According to the needs of processing work, the various milling cutters that the utility model provides also comprise one section of continuous print straight line sword, and its one end is connected with the terminal of curve sword, along curve sword terminal draw tangent line to become with straight line tooth shape-2 ° ~ 5 ° connect angle; Or comprise one section of continuous print camber line sword, its one end is connected with the terminal of curve sword.

According to the needs of processing work, the various milling cutters that the utility model provides also comprise leading sword, before being located at the starting point of curve sword.This leading sword at least comprises flat blade, and one end of flat blade is connected with curve sword starting point.One end of flat blade is in the tangent line coincidence or vertical of crossing curve sword starting point, but this set is not necessary.The length that flat blade is applicable to is as 4mm ~ 32mm.

According to the needs of processing work, the leading sword of the various milling cutters that the utility model provides also comprises oblique blade, and one end of oblique blade is connected with flat blade.The inclination angle of oblique blade is 45 ° ± 15 °, and radical length is 5mm ~ 10mm.

According to the needs of processing work, the leading sword of the various milling cutters that the utility model provides also comprises arc blade, and arc blade with the starting point of curve sword is connected separately, or its one end is connected with flat blade.

According to the needs of processing work, the differential seat angle more than at least 1 ° of the axial relief angle on any two pieces of blades of the various milling cutters that the utility model provides, less its axial relief angle scope of one piece of blade of angle is at 1 ° ~ 20 °, and larger its axial relief angle scope of one piece of blade of angle is at 2 ° ~ 30 °.

According to the needs of processing work, the differential seat angle more than at least 1 ° of the radial clearance angle on any two pieces of blades of the various milling cutters that the utility model provides, less its radial clearance angle scope of one piece of blade of angle is at 1 ° ~ 20 °, and larger its radial clearance angle scope of one piece of blade of angle is at 2 ° ~ 30 °.

According to the needs of processing work, the differential seat angle more than at least 1 ° of the axial rake on any two pieces of blades of the various milling cutters that the utility model provides, less its axial rake scope of one piece of blade of angle is at 1 ° ~ 20 °, and larger its axial rake scope of one piece of blade of angle is at 2 ° ~ 30 °.

According to the needs of processing work, the differential seat angle more than at least 1 ° of the radial rake on any two pieces of blades of the various milling cutters that the utility model provides, larger its radial rake scope of one piece of blade of angle is at 1 ° ~ 20 °, and larger its radial rake scope of one piece of blade of angle is at 2 ° ~ 30 °.

Diamond paster can be adopted at edge portion surfaces, or adopt the matrix containing coating or non-coating, as: but be not limited only to carbide alloy, cermet, cubic boron nitride and other powder metallurgy sintered material etc.

Be applicable to cell body of the present utility model, the degree of depth is everywhere identical or different, and its degree of depth is 5% ~ 65% of this place's cutter body diameter, prioritizing selection 25% ± 10%.In the cell body of various shape, the utility model prioritizing selection has the helicla flute of 0 ° ± 45 ° of helical angles, or has the straight trough of 0 ° ± 45 ° of axial rakes.The quantity of cell body should adapt with the quantity of blade contained by cutting portion, meets cutting edge in the needs of Milling Machining, as: but be not limited only to 1,2,3,4,5,6,7 and 8.When the quantity of cell body is greater than 1, the angle of the helix angle that each groove has or axial rake is identical or different.The angular aperture angle of cell body should meet formula 20 °-[cell body number/360] °.

For the curve sword of the utility model milling cutter, it is made up of some curved sections, and arbitrary curve Duan Jun has the relief angle of 1 ° ~ 30 °, and 1 ° ~ 30 ° anterior angles.Each relief angles that each curved section has or each anterior angle angle identical or different.

For meeting the needs of Milling Machining, being set to coordinate origin with the starting point of curve sword, with this coordinate (0,0) for reference, the curve sword in starting point to the end direction at least arranging 8 points.Except starting point, the relative initial point in position of other 7 points is arranged, and forms the curved section of at least 7 sections of different curvature (R).

A kind of curve sword embodiment for the utility model milling cutter, it at least arranges 8 points, form the curved section of at least 7 sections of different curvature (R), coordinate origin is set to the starting point of curve sword, with this coordinate (0, 0) be reference, other 7 points are expressed as (1.31 ± 0.05 successively relative to the coordinate of origin position, 1.48 ± 0.05), (3.35 ± 0.05, 2.01 ± 0.05), (5.17 ± 0.05, 1.54 ± 0.05), (6.37 ± 0.05, 0.41 ± 0.05), (6.87 ± 0.05,-0.93 ± 0.05), (6.97 ± 0.05,-2.42 ± 0.05) and (6.97 ± 0.05,-3.36 ± 0.05).

The another kind of curve sword embodiment being used for the utility model milling cutter, it at least arranges 8 points, form the curved section of at least 7 sections of different curvature (R), coordinate origin is set to the starting point of curve sword, with this coordinate (0, 0) be reference, other 7 points are expressed as (0.93 ± 0.05 successively relative to the coordinate of origin position, 1.01 ± 0.05), (2.20 ± 0.05, 1.67 ± 0.05), (3.28 ± 0.05, 1.82 ± 0.05), (5.24 ± 0.05, 1.29 ± 0.05), (6.18 ± 0.05, 0.46 ± 0.05), (6.78 ± 0.05,-0.82 ± 0.05) and (6.93 ± 0.05,-2.11 ± 0.05).

The another kind of curve sword embodiment being used for the utility model milling cutter, it at least arranges 8 points, form the curved section of at least 7 sections of different curvature (R), coordinate origin is set to the starting point of curve sword, with this coordinate (0, 0) be reference, other 7 points are expressed as (1.51 ± 0.05 successively relative to the coordinate of origin position, 1.35 ± 0.05), (3.05 ± 0.05, 1.67 ± 0.05), (4.70 ± 0.05, 1.30 ± 0.05), (5.76 ± 0.05, 0.49 ± 0.05), (6.41 ± 0.05,-0.72 ± 0.05), (6.62 ± 0.05,-2.16 ± 0.05) and (6.68 ± 0.05,-3.81 ± 0.05).

The embodiment of the various curve swords for milling cutter that the utility model provides, comprises and at least arranges 8 points, and when forming the curved section of at least 7 sections of different curvature (R), each section of bent curvature of a curve can select one of following group:

First group: from the starting point to the end of curve sword, the curvature of each curved section is as follows successively: first curvature (R1) is 3.12 ± 0.05, torsion (R2) be the 3.82 ± 0.05, the 3rd curvature (R3) be the 3.90 ± 0.05, the 4th curvature (R4) be the 3.37 ± 0.05, the 5th curvature (R5) to be the 3.54 ± 0.05, the 6th curvature (R6) be 8.96 ± 0.05 and the 7th curvature (R7) be 187.53 ± 0.05.

Second group: from the starting point to the end of curve sword, the curvature of each curved section is as follows successively: first curvature (R1) is 7.37 ± 0.05, torsion (R2) be the 3.49 ± 0.05, the 3rd curvature (R3) be the 3.94 ± 0.05, the 4th curvature (R4) be the 3.80 ± 0.05, the 5th curvature (R5) to be the 3.42 ± 0.05, the 6th curvature (R6) be 3.28 ± 0.05 and the 7th curvature (R7) be 6.38 ± 0.05.

3rd group: from the starting point to the end of curve sword, the curvature of each curved section is as follows successively: first curvature (R1) is 3.27 ± 0.05, torsion (R2) be the 3.82 ± 0.05, the 3rd curvature (R3) be the 3.81 ± 0.05, the 4th curvature (R4) be the 3.26 ± 0.05, the 5th curvature (R5) to be the 3.25 ± 0.05, the 6th curvature (R6) be 7.14 ± 0.05 and the 7th curvature (R7) be 88.23 ± 0.05.

Due to two pieces of blades at least containing the unequal axle/radial clearance angle of angle or axle/radial rake, make in the same cutting cutter having at least two kinds of cutters tooth (sword) and to realize with the angle that angle is different material simultaneously.The blade that angle is larger is more sharp also more fragile, is applicable to carrying out light cut; The blade that angle is less is more round blunt also more firm, in being applicable to carrying out/and heavy cut.When cutting high rigidity and high-hardness, the blunt sword of the circle that angle is less can obtain the higher processing life-span, and be cut material processed again after also not easily there is elastic deformation.The sharp edge that angle is larger only carries out sky processing and can not wear and tear, and processing forward to high viscosity or easily because of yield strength and hot strength high and occur elastically-deformable be cut material time, deformation remnants portion after the blunt sword processing of circle can be excised by sharp edge very easily, because not easily there is friction cold welding, sharp edge ensure that good Surface Machining integrality simultaneously.

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

The milling cutter that the utility model provides, adopts the blade of one section of continuous print curve sword and one section of continuous print camber line sword or straight line sword composition, significantly improves blade length, decreases the processing burden of unit length.Full curve shape blade, specially for High-speed machining designs, can make cutter give full play to cutting ability on the high-speed processing machine tool more than 5000 turns.

The effective active length of blade is not only increased by mode curve sword being decomposed into some curved sections, full curve shape blade also forms the chip of continuous print point to workpiece, cutter is made to have a maximum cutting force constantly moved forward to contact with workpiece to be machined all the time, obtain and be similar to pressure action effect, the material of high tenacity and high rigidity can be cut more easily, the working (machining) efficiency of various new material is significantly promoted (aluminum alloy materials is example, and its efficiency can improve more than 300%).Simultaneously along with the maximum cutting force of processing wearing and tearing constantly after move, cutter still can keep working ability, can remove the manual maintenance to cutter from.In cutting, chip be applied with due to blade of the present utility model and roll up the extra breaking force of considering angle different directions to be worth doing, by controlling length of cut, improve cutter heat dispersion and decrease and twine bits, improve tool sharpening operating mode and add cutting-tool's used life.

According to the needs of processing work, the utility model milling cutter is at least containing two pieces of blades, also there is at least two kinds of blade axial/radial relief angles or axial/radial anterior angle, by after various/angle of anterior angle at least differs more than 1 °, realize carrying out continuous Milling Machining to the metal (comprising alloy) of non-laminated and nonmetallic materials material, cutter is extended the service life when processing such material greatly, cut down finished cost, also make the heat dispersion of cutter be improved, reduce the generation twining bits phenomenon.

Accompanying drawing explanation

Fig. 1 be there is the blunt blade of circle milling cutter to the schematic diagram of high rigidity, high rigidity machined object machining;

Fig. 2 be there is the blunt blade of circle milling cutter to the schematic diagram of high tenacity, high tensile machined object machining;

Fig. 3 be there is sharp blade milling cutter to the schematic diagram of high rigidity, high rigidity machined object machining;

Fig. 4 be there is sharp blade milling cutter to the schematic diagram of high tenacity, high tensile machined object machining;

Fig. 5 is the structural representation of the utility model milling cutter one embodiment;

The structural representation of the cutting portion end face that Fig. 6 is milling cutter shown in Fig. 5;

The structure for amplifying schematic diagram that Fig. 7 is the blade of milling cutter shown in Fig. 5;

Fig. 8 is for carrying out the structure for amplifying schematic diagram of segmentation to the curve sword of milling cutter shown in Fig. 7;

Fig. 9 is the direction schematic diagram of the utility model milling cutter relief angle one embodiment;

Figure 10 is the structural representation of another embodiment of the utility model milling cutter;

The structural representation of the cutting portion end face that Figure 11 is milling cutter shown in Figure 10;

The structure for amplifying schematic diagram that Figure 12 is the blade of milling cutter shown in Figure 10;

Figure 13 is for carrying out the structure for amplifying schematic diagram of segmentation to the curve sword of milling cutter shown in Figure 12;

Figure 14 is the structural representation of another embodiment of the utility model milling cutter;

The structural representation of the cutting portion end face that Figure 15 is milling cutter shown in Figure 14;

The structure for amplifying schematic diagram that Figure 16 is the blade of milling cutter shown in Figure 14;

Figure 17 is for carrying out the structure for amplifying schematic diagram of segmentation to the curve sword of milling cutter shown in Figure 16;

Figure 18 is the non-laminated form material schematic diagram that the processing of the utility model milling cutter contains high rigidity and high tenacity simultaneously.

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 respectively the milling cutter with the blunt blade of circle carries out machining schematic diagram to high rigidity, high rigidity machined object and high tenacity, high tensile machined object.Round blunt blade 1 is when cutting high rigidity, high rigidity machined object 2, and its anterior angle and relief angle are all less, and therefore blade is firmer, not fragile.But, it is when processing high tenacity, high tensile machined object 3, its anterior angle and relief angle are all less, also easily there is elastic deformation (see dotted line in figure) in machined object, the blade 1 causing circle blunt is easily by the sticky cutter of thing bits 4, cannot make processedly to cut clean, cold welding, cause that finished surface is bad, service life reduction.

Fig. 3 and Fig. 4 is respectively the milling cutter with sharp blade carries out machining schematic diagram to high rigidity, high rigidity machined object and high tenacity, high tensile machined object.Sharp blade 5 is when cutting high rigidity, high rigidity machined object 2, and its anterior angle and relief angle are all comparatively large, and therefore blade easily fractures, and greatly reduces the life-span.But it is processing it when processing high tenacity, high tensile machined object 3, and its anterior angle and relief angle are all comparatively large, and blade not easily glues cutter, easily cuts off chip.

Fig. 5 is the structural representation of the utility model milling cutter one embodiment, the structural representation of the cutting portion end face that Fig. 6 is milling cutter shown in Fig. 5, the structure for amplifying schematic diagram that Fig. 7 is the blade of milling cutter shown in Fig. 5.As shown in Fig. 5, Fig. 6 and Fig. 7, this milling cutter has the shank 300 that can be installed on rotating machinery, cell body 200 and cutting portion 100.Any radial section of cutter body includes at least one trench bottom, and corresponding have a groove depth.The degree of depth of groove should be understood to carry out any radial section to cutting axis portion, and the groove depth of section is the diameter of the cutter body relative to this place.For helicla flute, it is the continuous cell body being arranged at cutter body in a spiral manner, and each bar spiral fluted degree of depth should be understood to carry out any radial section to cutting axis portion, and the groove depth of section is relative to the diameter of the cutter body at this place.In the present embodiment, cell body 200 is straight trough, 1 ° ~ 30 ° first axial rake S10 and the second axial rake S11,1 ° ~ 30 ° first axial relief angle S14, and the groove depth S9 of the diameter 5% ~ 65% of the cutter body at this place.First axial rake S10 and the second axial rake S11 differential seat angle more than at least 1 °.

Blade 110 is located at cutting portion 100, has 1 ° ~ 30 ° first radial rake S7 and the second radial rake S8,1 ° ~ 30 ° second radial clearance angle S13, also comprises one section of continuous print curve sword 111 and one section of continuous print straight line sword 112.First radial rake S7 and the second radial rake S8 differential seat angle more than at least 1 °.The starting point S1 of curve sword is set at end face 120 place close to cutting portion, the terminal S3 of curve sword draw tangent line (not shown) and straight line sword 112 formed-2 ° ~ 5 ° connect angle.

In the present embodiment, blade 110 also comprises leading sword, before being placed in curve sword starting point.This leading sword comprises flat blade 113.Flat blade is connected with curve sword starting point, and overlaps in the tangent line crossing curve sword starting point, and length S5 is 4mm ~ 32mm.

Fig. 6 carries out the concrete mode of segmentation to the curve sword of milling cutter shown in Fig. 5 for giving, curved section starting point is set to XY two-dimensional coordinate initial point SS1 (being the S1 in Fig. 7), again by 7 some SS2, SS3, SS4, SS5, curve sword is divided into 7 sections of curved sections by SS6, SS7 and SS8 successively, and the curvature (R) of each curved section is as shown in table 1, the first radial clearance angle S121 in three directions, S122, S123 as shown in Figure 9, the first radial clearance angle S121, S122, S123 and the second radial clearance angle S13 differential seat angle more than at least 1 °.

Table 1

Figure 10 is the structural representation of the utility model milling cutter one embodiment, the structural representation of the cutting portion end face that Figure 11 is milling cutter shown in Figure 10, the structure for amplifying schematic diagram that Figure 12 is the blade of milling cutter shown in Figure 10.As shown in Figure 10, Figure 11 and Figure 12, this milling cutter has the shank that can be installed on rotating machinery, cell body and cutting portion.Any radial section of cutter body includes at least one trench bottom, and corresponding have a groove depth.The degree of depth of groove should be understood to carry out any radial section to cutting axis portion, and the groove depth of section is the diameter of the cutter body relative to this place.For helicla flute, it is the continuous cell body being arranged at cutter body in a spiral manner, and each bar spiral fluted degree of depth should be understood to carry out any radial section to cutting axis portion, and the groove depth of section is relative to the diameter of the cutter body at this place.In the present embodiment, cell body is straight trough, 1 ° ~ 30 ° first axial rake T8 and the second axial rake T9,1 ° ~ 30 ° first axial relief angle T12, and the groove depth T7 of the diameter 5% ~ 65% of the cutter body at this place.First axial rake T8 and the second axial rake T9 differential seat angle more than at least 1 °.

Blade is located at cutting portion, has 1 ° ~ 30 ° first radial rake T5 and the second radial rake T6,1 ° ~ 30 ° first radial clearance angle T11, also comprises one section of continuous print curve sword and one section of continuous print straight line sword.First radial rake T5 and the second radial rake T6 differential seat angle more than at least 1 °.The starting point T1 of curve sword is set in the end close to cutting portion, the terminal T3 of curve sword draw tangent line 114 become with straight line tooth shape-2 ° ~ 5 ° meet angle T4.

In the present embodiment, blade also comprises leading sword, before being placed in curve sword starting point.This leading sword comprises flat blade.Flat blade is connected with curve sword starting point, and overlaps in the tangent line crossing curve sword starting point.

Figure 13 carries out the concrete mode of segmentation to the curve sword of milling cutter shown in Figure 12 for giving, curved section starting point is set to XY two-dimensional coordinate initial point TT1 (being the T1 in Fig. 7), again by 7 some TT2, TT3, TT4, TT5, TT6, curve sword is divided into 7 sections of curved sections by TT7 and TT8 successively, and the curvature (R) of each curved section is as shown in table 2.

Table 2

Figure 14 is the structural representation of the utility model milling cutter one embodiment, the structural representation of the cutting portion end face that Figure 15 is milling cutter shown in Figure 14, the structure for amplifying schematic diagram that Figure 16 is the blade of milling cutter shown in Figure 14.As shown in Figure 14, Figure 15 and Figure 16, this milling cutter has the shank that can be installed on rotating machinery, cell body and cutting portion.Any radial section of cutter body includes at least one trench bottom, and corresponding have a groove depth.The degree of depth of groove should be understood to carry out any radial section to cutting axis portion, and the groove depth of section is the diameter of the cutter body relative to this place.For helicla flute, it is the continuous cell body being arranged at cutter body in a spiral manner, and each bar spiral fluted degree of depth should be understood to carry out any radial section to cutting axis portion, and the groove depth of section is relative to the diameter of the cutter body at this place.In the present embodiment, cell body is straight trough, 1 ° ~ 30 ° first axial rake U8 and the second axial rake U9,1 ° ~ 30 ° first axial relief angle U12, and the groove depth U7 of the diameter 5% ~ 65% of the cutter body at this place.First axial rake U8 and the second axial rake U9 differential seat angle more than at least 1 °.

Blade is located at cutting portion, has 1 ° ~ 30 ° first radial rake U5 and the second radial rake U6,1 ° ~ 30 ° first radial clearance angle U11, also comprises one section of continuous print curve sword and one section of continuous print straight line sword.First radial rake U5 and the second radial rake U6 differential seat angle more than at least 1 °.The starting point U1 of curve sword is set in the end close to cutting portion, the terminal U3 of curve sword draw tangent line become with straight line tooth shape-2 ° ~ 5 ° connect angle.

Figure 17 carries out the concrete mode of segmentation to the curve sword of milling cutter shown in Figure 16 for giving, curved section starting point is set to XY two-dimensional coordinate initial point UU1 (being the U1 in Fig. 7), again by 7 some UU2, UU3, UU4, UU5, UU6, curve sword is divided into 7 sections of curved sections by UU7 and UU8 successively, and the curvature (R) of each curved section is as shown in table 3.

Table 3

Also the curve sword shown in each embodiment above-mentioned can arrange more point, thus curve sword is decomposed into more shorter and smaller curved sections, can see 201420135545.9.

The milling cutter provided by above-described embodiment, carries out the situation of milling machining see Figure 18 to the material of non-laminated form simultaneously containing high rigidity and high tenacity.As shown in figure 18, first the blunt blade 1 of circle cuts high rigidity machined object 2, sharp blade 5 sky is walked, does not hinder.Then, when the blunt blade 1 of circle processes high tenacity machined object 3, machined object generation elastic deformation (see dotted line in figure), has follow-up sharp blade 5 to cut, realizes good processing effect.Compared with universal cutter, milling cutter of the present utility model achieves the Continuous maching of the material to non-laminated, and the heat dispersion of cutter is improved, and reduces the generation twining bits phenomenon, also makes the life-span greatly extend, cut down finished cost.

Claims

1. a milling cutter, comprise a shank for the clamping of milling cutter and cutting portion is characterized in that also at least comprising two cell bodies, described cutting portion at least comprises two pieces of blades, described blade comprises one section of continuous print curve sword, the starting point of described curve sword is being set close to described cutting portion end, described curve sword at least arranges 8 points, form the curved section of at least 7 sections of different curvature, coordinate origin is set to the starting point of curve sword, with this coordinate (0, 0) be reference, other 7 points are followed successively by (1.31 ± 0.05 relative to the position coordinates of described initial point, 1.48 ± 0.05), (3.35 ± 0.05, 2.01 ± 0.05), (5.17 ± 0.05, 1.54 ± 0.05), (6.37 ± 0.05, 0.41 ± 0.05), (6.87 ± 0.05,-0.93 ± 0.05), (6.97 ± 0.05,-2.42 ± 0.05) and (6.97 ± 0.05,-3.36 ± 0.05).

2. milling cutter according to claim 1, is characterized in that the differential seat angle more than at least 1 ° of anterior angle or the relief angle that any two pieces of described blades have; Wherein, the anterior angle that angle is less or relief angle are 1 ° ~ 20 °, and the anterior angle that angle is larger or relief angle are 2 ° ~ 30 °.

3. milling cutter according to claim 1, is characterized in that the differential seat angle more than at least 1 ° of the axial relief angle on any two pieces of blades described in it is characterized in that.

4. milling cutter according to claim 1, is characterized in that the differential seat angle more than at least 1 ° of the radial clearance angle on any two pieces of blades described in it is characterized in that.

5. milling cutter according to claim 1, is characterized in that the differential seat angle more than at least 1 ° of the axial rake on any two pieces of blades described in it is characterized in that.

6. milling cutter according to claim 1, is characterized in that the differential seat angle more than at least 1 ° of the radial rake on any two pieces of blades described in it is characterized in that.

7. milling cutter according to claim 1, is characterized in that described cell body is for having the helicla flute of 0 ° ± 45 ° of helical angles or having the straight trough of 0 ° ± 45 ° of axial rakes.

8. milling cutter according to claim 1, is characterized in that the quantity of described cell body is 3,4,5,6,7 or 8.

9. milling cutter according to claim 1, is characterized in that the angular aperture angle of described cell body is 20 °-[cell body number/360] °.

10. milling cutter according to claim 1, is characterized in that described curve sword is made up of some curved sections, and the relief angle that curved section described arbitrarily has is 1 ° ~ 30 °.

11. milling cutters according to claim 1, is characterized in that described curve sword is made up of some curved sections, the anterior angle 1 ° ~ 30 ° that curved section described arbitrarily has.

12. milling cutters according to claim 1, characterized by further comprising leading sword, before being located at the starting point of described curve sword.

13. milling cutters according to claim 1, characterized by further comprising leading sword, and before being located at the starting point of described curve sword, described leading sword at least comprises flat blade, and one end of described flat blade is connected with described curve sword starting point.

14. milling cutters according to claim 13, is characterized in that the length of described flat blade is 4mm ~ 32mm.

15. milling cutters according to claim 1, characterized by further comprising leading sword, before being located at the starting point of described curve sword, described leading sword at least comprises flat blade and oblique blade, one end of described flat blade is connected with described curve sword starting point, and one end of described oblique blade is connected with described flat blade.

16. milling cutters according to claim 15, is characterized in that the inclination angle of described oblique blade is 45 ° ± 15 °.

17. milling cutters according to claim 15, is characterized in that the radical length of described oblique blade is 5mm ~ 10mm.

18. according to the milling cutter one of claim 1-17 Suo Shu, it is characterized in that the starting point to the end from curve sword, form the curved section of at least 7 sections of different curvature, the curvature of each curved section is as follows successively: first curvature is 3.12 ± 0.05, torsion be the 3.82 ± 0.05, the 3rd curvature be the 3.90 ± 0.05, the 4th curvature be the 3.37 ± 0.05, the 5th curvature to be the 3.54 ± 0.05, the 6th curvature be 8.96 ± 0.05 and the 7th curvature be 187.53 ± 0.05.