CN205437289U - Milling cutter - Google Patents

Abstract

The utility model provides a milling cutter, includes a stalk portion, its clamping, cutting portion and at least cell body that is used for milling cutter. Cutting portion mills with the ministry of worker including one at least, mills to include one section continuous curve with the ministry of worker, mills to set up the coordinate system initial point on the profile with the ministry of worker to at least, set up 4 coordinate points again to this coordinate point, set up one piece of curve sword and pass through initial point and 4 coordinate points simultaneously. The utility model discloses milling cutter specially mills the processing design for the high speed of the nonstandard shape of new material, can make the cutter bring into play full play cutting ability on surpassing the high -speed machining lathe of 5000 commentaries on classics for the machining efficiency of new materials promotes by a wide margin. Milling cutter rather than similar compares, can realize the one shot forming of processing, reduces or avoids subsequent and polish.

Description

Milling cutter

Technical field

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

Background technology

Cutter is the instrument in machine-building for machining, also known as cutting element.Owing to most of cutter is that machine is used, it is substantially all for cutting metal material, so " cutter " word is the most just interpreted as metal cutting tool.But material science develops, various materials are the most extensively applied, such as in the production of product and processing: engineering plastics and carbon fibre composite etc. (CN203401118U).Cutter can be divided into by the form of workpiece machining surface: processes the cutter of various outer surface, aperture knife tool, threading tool, gear cutting tool and cutting off tool etc. several.

Milling Machining component in field of machining is becoming more and more important, the most progressively instead of other processing modes such as car, brill.Extensive multiformity due to Milling Machining, in addition to the metal materials such as traditional steel and cast iron, the row of the machined material that increasing novel metal/nonmetallic materials are also progressively included into Milling Machining, the most not only various metal alloys including aluminium-containing alloy, the also various resin materials including high-grade engineering plastics, and various carbon fibre composite is in interior carbon fiber metal composite plate.

The material property of new material is all much better than traditional material than, various aspects such as yield strength, specific heat capacity and fragility by force in such as hardness, hot strength, matter, on the one hand the properties of product can be made to significantly improve, on the other hand also due to the chip breaking that generally there are these new materials is difficult, heat radiation is difficult, stickiness is big and fragility is big etc., feature is that machining brings great difficulty.In reality is processed, the consumption for the milling cutter of processing novel material is often far longer than traditional material, even occurs that a cutter was only capable of processing the extreme case of tens workpiece.In such case, the production cost of Producer the nearlyest 30% is all used for the consumption of cutter.As can be seen here, can the importance of milling cutter quality from this kind of processing mode saliency out, become and quickly and efficiently complete Milling Machining, reduces cost and the key factor increased the benefit.Milling cutter is a class for Milling Process, the rotary cutter with one or more cutter tooth, is mainly used at processing plane, step, groove, profiled surface and cut-out workpiece etc..During work, each cutter tooth cuts the surplus of workpiece the most off and on.

To this end, people have to redesign cutting tool accordingly, so that cutting tool is adapted to the needs of new material processing.On the one hand so that cutter life is extended, it is to avoid tipping and fracture wait likely defective work piece accident generation, to reduce processing cost；On the other hand so that the rhythm of production of machining, efficiency and product stability are improved.

Starting with from structure and the pattern of cutting tool, it is thus proposed that a kind of rake face wavy-edge milling cutter, it is as shown in Figure 1.Increased the overall length of Tool in Cutting blade by corrugated blade shape, thus lower the operating pressure in cutting tip cutting edge unit are, and then tool life tool sharpening efficiency can be improved.Owing to the processing of rake face wave edge is the most difficult, only a few numerically controlled processing equipment could produce, and not only it holds at high price, and limits production in enormous quantities.Simultaneously as general equipment cannot reconditioning damage after rake face wave edge, overseas, not only the cycle is longer, and expensive in maintenance China to be sent to of this kind of cutter.

On the basis of above-mentioned cutter, rake face wave edge shown in Fig. 1 is changed into rear knife face wave edge as shown in Figure 2 by someone, by wave edge being transferred to rear knife face, the production technology simplified to a certain extent so that the equipment about nearly half can complete the processing of this type of cutter.Rear knife face wave edge is divided into several narrower chips by original broadband chip, thus decreases cutting deformation so that formation curling and the chip removal situation of chip in milling process are improved.Peripheral edge changes waveform into, causes the thinnest chip to rupture, and resistance to cutting decreases.Having a disadvantage in that machined surface can be in roughness, and owing to cutting vibration is very big, easily there is coarse (fretting corrosion) in the junction surface of cutter and machine, therefore, it is difficult to be applicable to high precision machines.The particularly situation of dry cutting, owing to cutter is easy to have high heat, needs cutting speed is reduced by 10% to 20%, causes the decline of working (machining) efficiency.

The open a kind of Dual-body chopsticks milling cutter of Chinese utility model patent ZL200420018032.6, it also has similar blade pattern.The outer of milling body uniformly offers more than three unidirectional cutter grooves, is welded with alloy cutter head in cutter groove, and alloy cutter head offers the M shape wave edge of a knife.This cutter is also similar have employed the design of corrugated blade, and two pieces milling cutter coordinates the processing being used for bamboo wood product.

Chinese invention patent ZL200910013142.0 discloses a kind of integral carbide goldfish scale milling cutter, including milling cutter blade and milling cutter shank, cutting edge on milling cutter blade is to be constituted cutting unit by the helicla flute that left and right rotation symmetry is staggered, left-hand screw groove many 2 than right spiral.Each cutting unit main cutting edge length makes 0.05～0.1MM, and after cutting edge, knife face makes 0～0.01MM along face of cylinder width.Cutting edge anterior angle makes 10 °～15 °, and rake face is straight line on method section；Cutting edge relief angle makes 20 °～25 °.Circular knife groove depth makes the 7～8% of tool diameter.It can be used for the Milling Process of the composite such as carbon fiber, glass fibre.

Technology is separately had then to start with in terms of solving milling cutter heat radiation and manufacture method etc..Chinese invention patent application 201310472837.1 discloses a kind of method improving end mill(ing) cutter service life based on heat pipe phase transformation, proposes a kind of end mill(ing) cutter the most simultaneously.Will be filled with wick heat pipe to arrange with the direction being parallel to end mill(ing) cutter body axis, and heat pipe condenser section and end mill handle of a knife copline.Cutting heat end mill(ing) cutter main cutting edge position produced by wick heat pipe, constantly carry out cold and hot exchange, thus continuously will cut heat from the incoming heat pipe evaporator section in end mill(ing) cutter main cutting edge region, it is transmitted to condensation segment, achieve reduction end mill(ing) cutter cutting temperature, and reduce cutting edge spot temperature gradient.

Chinese invention patent application 201310291138.7 provides a kind of cryogenic technology improving the injection molding high-speed steel milling cutter life-span, use the processing methods such as preheating, vacuum hardening, cooling, for the first time tempering, subzero treatment and second time tempering, thus significantly improve anti-wear performance and the hardness of milling cutter, improve milling cutter comprehensive mechanical property and service life.

Utility model content

A purpose of the present utility model is to provide a kind of milling cutter, it is adaptable to metal (including alloy), engineering plastics and fibrous composite are carried out Milling Machining, to obtain the profile of non-standard shapes, so that cutting-tool's used life is extended.

Another purpose of the present utility model is to provide a kind of milling cutter, improves the heat dispersion of cutter and reduces the generation twining bits phenomenon, being beneficial to metal (including alloy), engineering plastics and fibrous composite are carried out Milling Machining.

Further object of the present utility model is to provide a kind of milling cutter, to realize the some chip of workpiece continuous print, removes the manual maintenance to cutter from, to improve the efficiency that metal (including alloy), engineering plastics and fibrous composite carry out Milling Machining.

Another purpose of the present utility model is to provide a kind of milling cutter, realizes Work piece high-speed Milling Machining with full curve shape blade, to improve the efficiency that metal (including alloy), engineering plastics and fibrous composite carry out non-standard shapes Milling Machining.

The metal that this utility model is mentioned, is a kind of material, and it contains free electron and has gloss (i.e. to visible ray strong reflection), is rich in the character such as ductility, easily conduction, heat conduction.These materials or predominantly simple substance (had both included being recorded in the periodic table of elements, also include thus obtained), or main by the several alloy formed, common such as: but be not limited only to carbon steel, aluminium alloy, copper alloy and kirsite etc..It should be appreciated that be primarily referred to as this kind of material to account for the overwhelming majority, but it be not precluded from it and there is the situation that the compound forms such as such as small amounts thing, sulfide and chloride exist.

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

The fibrous composite that this utility model is mentioned, it is a kind of matrix by continuous phase and the phase reinforcement contained by matrix forms, wherein with materials such as glass fibre, carbon fiber, boron fibre, aramid fiber, silicon carbide fibre, asbestos fibre, whisker, tinsel and hard particulates for the compounded material of reinforcement.The matrix material often having is such as: but it is not limited only to synthetic resin, rubber, pottery, graphite, carbon, aluminum, magnesium, copper, titanium and alloy thereof etc., but especially carbon fibre composite.

The milling cutter that this utility model provides, including a shank, it is for the clamping of milling cutter, cutting portion and at least one cell body.Cutting portion at least includes a Milling Machining portion, and this Milling Machining portion includes one section of continuous print curve.

The milling cutter that this utility model provides, also includes curve sword.Curve sword falls within curve, or is connected with curve.

According to the needs of processing workpiece, the various milling cutters that this utility model provides also include leading sword, before being located at curve (i.e. the direction at cutting portion end face place is front).This leading sword at least includes flat blade, its be suitable for length such as: 4mm～32mm.

According to the needs of processing workpiece, the leading sword of the various milling cutters that this utility model provides at least includes at least one recess, and along cutting portion axially or radially, each recess bottom surface is 0.01mm～0.2mm with the drop of described leading sword profile.Recess is additionally provided with oblique blade, and its inclination angle is 45 ° ± 15 °.

According to the needs of processing workpiece, the leading sword of the various milling cutters that this utility model provides also includes arc blade, as: shown in 201420205107.5, arc blade is individually connected with the starting point of curve sword, or its one end is connected with flat blade.

Diamond paster can be used at edge portion surfaces, or use containing coating or the matrix of non-coating, such as: but it is not limited only to hard alloy, ceramic metal, cubic boron nitride and other powder metallurgy sintered material etc..

Being applicable to cell body of the present utility model, the degree of depth everywhere is identical or different, and its degree of depth is 5%～65% of cutter body diameter at this, prioritizing selection 25% ± 10%.In variously-shaped cell body, this 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, such as: but it is not limited only to 1,2,3,4,5,6,7 and 8.When the quantity of cell body is more than 1, helix angle or the angle of axial rake that each groove is had are identical or different.The angular aperture angle of cell body should meet formula 20 °-[cell body number/360] °.

For the curve sword of this utility model milling cutter, it is made up of some curved sections, and arbitrary curve section is respectively provided with 2 °～the relief angle of 50 °, 2 °～50 ° of radial rakes.Relief angles or anterior angle angle that each curved section is had are identical or different.

For improving the efficiency of Milling Machining, Milling Machining contouring arranges coordinate origin (0,0), relative to initial point again at least provided with 4 coordinate points, one piece of curve sword is set simultaneously by initial point and 4 coordinate points.

A kind of curve sword embodiment for this utility model milling cutter, at least provided with 5 points, one of them point falls within Milling Machining contouring, and as coordinate origin (0,0), relative to initial point, other 4 corresponding coordinates of point be respectively (-2.97 ± 0.1 ,-1.50 ± 0.1), (-1.60 ± 0.1 ,-0.35 ± 0.1), (1.60 ± 0.1,-0.34 ± 0.1) and (2.97 ± 0.1 ,-1.50 ± 0.1).

Between adjacent coordinates point, thus form multiple curve sword section, coordinate points (-2.97 ± 0.1,-1.50 ± 0.1) and coordinate points (-1.60 ± 0.1,-0.35 ± 0.1) the curved section curvature between is 3.28 ± 0.1, coordinate points (-1.60 ± 0.1,-0.35 ± 0.1) curved section curvature is 3.83 ± 0.1 and between initial point, initial point and coordinate points (1.60 ± 0.1,-0.34 ± 0.1) between, curved section curvature is 3.83 ± 0.1, coordinate points (1.60 ± 0.1,-0.34 ± 0.1) and coordinate points (2.97 ± 0.1,-1.50 ± 0.1) between, curved section curvature is 3.26 ± 0.1.

The blade of curve shape, chip fractures because of different directions stress, the shortest chip reduces cutter and is wound around, operating mode when also helping heat radiation thus improve tool sharpening, cutter can be carried out with higher rotating speed and work speed, thus substantially increase service efficiency and the service life of cutter, reach the purpose of design of high-speed and high-efficiency processing.Therefore, also by arranging more point mode on curve sword, thus curve sword is decomposed into more shorter and smaller curved section, to adapt to different cutting material, mating groove shape and the needs of blade quantity simultaneously, thus improve the chip breaking of milling cutter, heat radiation and the performance of the aspect such as wear-resisting.

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

The milling cutter that this utility model provides, the main blade using one section of continuous print curve sword composition, it is suitable for using the non-standard shapes of new material manufacture to carry out High-speed machining, cutter can be made to 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 the way of curve sword is decomposed into some curved sections, full curve shape blade also forms continuous print point chip to workpiece, cutter is made to have the maximum cutting force of a continuous reach to contact with workpiece to be machined all the time, obtain being similar to pressure action effect, high tenacity and the material of high rigidity can be cut more easily, the non-standard shapes working (machining) efficiency making various new material is substantially improved (as a example by aluminum alloy materials, its efficiency can improve more than 300%).Moving the most afterwards along with processing abrasion maximum cutting force, cutter remains to keep working ability, can remove the manual maintenance to cutter from simultaneously.Chip is applied with in cutting due to blade of the present utility model and rolls up the extra breaking force of bits angle different directions, by length of cut is controlled, improve cutter heat dispersion and decrease and twine bits, improve tool sharpening operating mode and add cutting-tool's used life.

By the design to curve tooth shape state, it is more suitable for the processing to workpiece, also reduce further the difficulty of processing of blade, improve working (machining) efficiency.

Meanwhile, similar milling cutter is compared, and can realize the one-shot forming of non-standard shapes processing, follow-up polishing is reduced or avoided, moreover it is possible to make the seismism in processing be remarkably decreased or avoid, and then the precision that material is processed is improved, and surface is more smooth.

Accompanying drawing explanation

Fig. 1 is the structural representation that rake face has the milling cutter of waveform sword；

Fig. 2 is the structural representation that rear knife face has the milling cutter of waveform sword；

Fig. 3 is the structural representation of this utility model milling cutter one embodiment；

Fig. 4 is the structural representation of the cutting portion end face of milling cutter shown in Fig. 3；

Fig. 5 is the structure for amplifying schematic diagram of the blade of milling cutter shown in Fig. 3；

Fig. 6 is the structure for amplifying schematic diagram that the curve sword to milling cutter shown in Fig. 5 carries out segmentation；

Fig. 7 is the direction schematic diagram of this utility model milling cutter relief angle.

Detailed description of the invention

The technical solution of the utility model is described in detail below in conjunction with accompanying drawing.This utility model embodiment is only in order to illustrate the technical solution of the utility model and unrestricted, although this utility model being described in detail with reference to preferred embodiment, it will be understood by those within the art that, the technical scheme of utility model can be modified or equivalent, without deviating from the spirit and scope of technical solutions of the utility model, it all should be contained in right of the present utility model.

Fig. 3 is the structural representation of this utility model milling cutter one embodiment, and Fig. 4 is the structural representation of the cutting portion end face of milling cutter shown in Fig. 3, and Fig. 5 is the structure for amplifying schematic diagram of the blade of milling cutter shown in Fig. 3.As shown in Fig. 3, Fig. 2 and Fig. 4, this milling cutter has shank 300, cell body 200 and the cutting portion 100 that may be mounted on rotating machinery.Any radial section of cutter body all includes at least one trench bottom, has a groove depth accordingly.The degree of depth of groove should be understood to carry out cutting axis portion any radial section, and the groove depth of section is the diameter relative to the cutter body at this.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 cutting axis portion is carried out any radial section, and the groove depth of section is relative to the diameter of the cutter body at this.In the present embodiment, cell body 200 is straight trough, 0 ° ± 45 ° axial rakes AO9, AO10, and groove depth AO8 of the diameter 5%-65% of the cutter body at this.

In the present embodiment, cutting portion 100 includes end face 120, also has 4 Milling Machining portions 110, has 2 °～50 ° of radial rakes AO5, AO6, and its profile includes one section of continuous print curve 111 (seeing Fig. 5).Curve arranges XY two-dimensional coordinate system initial point (0,0), relative to this initial point AOO3 again at least provided with 4 coordinate points AOO1, AOO2, AOO4, AOO5 (sees table 1), arranges one piece of curve sword 112 and makes simultaneously by initial point and 4 coordinate points, and curve sword 112 falls within curve 111 (seeing Fig. 6).Between adjacent coordinates point, thus form the curvature (R) of multiple curve sword section, as shown in table 1.Relief angle AO111, AO112, AO113, as shown in Figure 7.

Table 1

Also on the curve sword shown in each embodiment above-mentioned, more point can be set, thus curve sword is decomposed into more shorter and smaller curved section, can be found in 201420135545.9.

Claims (17)

1. a milling cutter, including a shank for the clamping of milling cutter, cutting portion and at least one cell body, it is characterized in that described cutting portion at least includes a Milling Machining portion, the profile in described Milling Machining portion arranges coordinate origin (0, 0), relative to described initial point again at least provided with 4 coordinate points, it is respectively (-2.97 ± 0.1,-1.50 ± 0.1), (-1.60 ± 0.1,-0.35 ± 0.1), (1.60 ± 0.1,-0.34 ± 0.1) and (2.97 ± 0.1,-1.50 ± 0.1), one piece of curve sword is set simultaneously by described initial point and 4 coordinate points.

Milling cutter the most according to claim 1, it is characterised in that described Milling Machining portion also includes curve.

Milling cutter the most according to claim 1, it is characterised in that described Milling Machining portion also includes that curve, described curve sword fall within described curve.

4. according to the milling cutter described in Claims 2 or 3, it is characterised in that also include leading sword, before being located at described curve.

5., according to the milling cutter described in Claims 2 or 3, it is characterised in that also include leading sword, before being located at described curve, described leading sword at least includes flat blade.

Milling cutter the most according to claim 5, it is characterised in that a length of 4mm～32mm of described flat blade.

Milling cutter the most according to claim 5, it is characterised in that described leading sword also includes arc blade, it is individually connected with the starting point of described curve sword, or its one end is connected with described flat blade.

Milling cutter the most according to claim 5, it is characterised in that described leading sword also includes that at least one recess, described recess are provided with oblique blade, inclination angle is 45 ° ± 15 °.

Milling cutter the most according to claim 1, characterized by further comprising leading sword, before being located at described curve, described leading sword at least includes a recess, along described cutting portion axially or radially, each described recess bottom surface is 0.01mm～0.2mm with the drop of described leading sword profile.

Milling cutter the most according to claim 1, it is characterised in that described cell body is to have the helicla flute of 0 ° ± 45 ° of helical angles or have the straight trough of 0 ° ± 45 ° of axial rakes.

11. milling cutters according to claim 1, it is characterised in that the quantity of described cell body is 1,2,3,4,5,6,7 or 8.

12. milling cutters according to claim 1, it is characterised in that the angular aperture angle of described cell body is 20 °-[cell body number/360] °.

13. milling cutters according to claim 1, it is characterised in that described curve sword is made up of some curved sections, the most described curved section is respectively provided with 2 °～the relief angle of 50 °, and 2 °～50 ° of radial rakes.

14. milling cutters according to claim 1, it is characterised in that the curved section curvature between coordinate points (-2.97 ± 0.1 ,-1.50 ± 0.1) and coordinate points (-1.60 ± 0.1 ,-0.35 ± 0.1) is 3.28 ± 0.1.

15. milling cutters according to claim 1, it is characterised in that between coordinate points (-1.60 ± 0.1 ,-0.35 ± 0.1) and initial point, curved section curvature is 3.83 ± 0.1.

16. milling cutters according to claim 1, it is characterised in that between initial point and coordinate points (1.60 ± 0.1 ,-0.34 ± 0.1), curved section curvature is 3.83 ± 0.1.

17. milling cutters according to claim 1, it is characterised in that between coordinate points (1.60 ± 0.1 ,-0.34 ± 0.1) and coordinate points (2.97 ± 0.1 ,-1.50 ± 0.1), curved section curvature is 3.26 ± 0.1.