CN203401118U - Drill bit used for performing hole machining on fiber composite material - Google Patents
Drill bit used for performing hole machining on fiber composite material Download PDFInfo
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- CN203401118U CN203401118U CN201320460987.6U CN201320460987U CN203401118U CN 203401118 U CN203401118 U CN 203401118U CN 201320460987 U CN201320460987 U CN 201320460987U CN 203401118 U CN203401118 U CN 203401118U
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Abstract
A drill bit used for performing hole machining on fiber composite material comprises a longitudinal axis, a handle part, a cutting body and a cutting end, wherein the handle part, the cutting body and the cutting end can be installed on a rotating machine. The cutting end at least comprises a two-cutting-edge main cutting part, and the cutting body is at least provided with two spiral grooves with a 0+/-45 degrees spiral angle. The rear cutter face of the main cutting part is a concave cambered surface, a first sharp point is formed by the rear cutter face and a drilling point of the cutting end, a second sharp point is formed by the rear cutter face and the shoulder part of the cutting end, and the first sharp point is 0.1-2mm higher than the second sharp point. The drill bit performs remachining on a cutting part, spiral grooves and the rear cutter face of a common twist drill, and achieves layering in the process of machining the composite material and complete restraint of inlet and outlet burrs and fragmentation phenomena, and the feeding speed of the drill bit is improved by over 30% compared with that of a traditional machining drill bit.
Description
Technical field
The utility model relates to a kind of cutter for hole processing, relates in particular to a kind of drill bit, is applicable to fibrous composite to carry out hole processing, improving the existing burr in the hole this type of material being processed in the past, break and the phenomenon such as layering.
Background technology
Drill bit is that a class goes out through hole or blind hole in order to drilling on solid material, and can carry out to existing hole the general name of the cutter of reaming.Its conventional kind is as fluted drill, chit drill, depth drill, reamer and centre drill etc.
The common spiral bit using at present, often adopts sharp angle value to be greater than the tip of 90 degree.In working angles, when especially fibrous composite is cut, along with drill bit tip part constantly penetrates machined material, the axial force that machined material bears constantly increases.Simultaneously, the material behavior of fibrous composite, make excessive axial force cause storeroom generation layering and fibrous fracture, and the phenomenon of working angles inefficacy, to such an extent as in processing, regularly there is the generation of the problems such as hole wall layering, aperture burr and aperture be cracked, cause thus workpiece to scrap in a large number or defective.
The problems referred to above that fibrous composite caused in order to overcome excessive axial force, prior art mostly adopts the mode that has reduced sharp angle to solve.Chinese utility model patent ZL200320125153.6 is when reducing sharp angle angle (60 °-80 °), between the drilling rod of drill bit and head, increased the conical transition zone that has blade, principle and process that drill bit is holed on thin wall parts are changed a lot, and propose a kind of new drill with conical transition zone.It is the conical transition zone of 2 °-8 ° that this technical scheme has an angle of inclination between drilling rod and head, has 3-6 blade of cutting material on it.This drill bit has fraising effect, the problem such as eliminated the layering of hole exits edge, the plucking that common bit bore often produces and burst apart, and hole inwall is rough and the various defects such as fluffing.
The object that these technology employings reduce sharp angle angle is in order to reduce the axial force in processing, and to overcome, aperture burr breaks and the phenomenon of layering.But can not effectively suppress the formation of aperture burr, conventionally can only be for the processing of a part of composite in reality processing, and need to be aided with subsequent handling deburring.
For this reason, Chinese invention patent ZL200780024847.1 has applied the diamond of 5 μ m on minimizing sharp angle angle drill bit, and has proposed a kind of drill bit for machining fiber reinforced composite material.This technical scheme have one at 10 degree to the brill edge back angle between 20 degree, one approximately-5 degree to the notch rake angle between 10 degree, a chisel edge length that is less than 0.035mm, and one approximately 70 degree to the angle, summit between 100 degree.It carrys out processing fiber material by the processing method that is attached to the diamond particles of cutter hub tip composite is carried out to grinding, thereby suppresses layering and aperture burr.But still there are some defects, and as: need to diamond particles be attached on cutter hub tip by special method, not only the quality control of this technique is complicated, and cutter hub material therefor and diamond particles size etc. is had to strict demand, limits a lot of; By adhering to thereon a large amount of diamonds, unit price is often several times as much as universal cutter, and the rotating speed of work turns above about 10,000 greatly, must the high rotating speed lathe of supporting special use, and use cost is too high; Often can only be for large diameter hole processing more than 12mm, and aircraft industry needs in a large number, be the medium-small diameter hole processing below 12mm, both can not finely mate, and the range of work is limited.
Separately there are some technology in succession to be proposed, if: Chinese utility model patent ZL200820175886.3 is to improving on the secondary sword structure and parameter of fluted drill, and the multi-blade pointed drill head of a kind of micro-ladder, narrow land, large front clearance, large back taper, overgauge, land segmentation has been proposed.It is major cutting edge that this technical scheme be take straight line sword or broken line sword, the ladder height hv of micro-ladder is between 0.1～0.3mm, step length f4 is between 0.2d～0.8d, narrow margin width f1 is between 0.1mm～0.4mm, front cutting edge relief angle α f is between 5 °～60 °, drill bit back taper amount is at 0.24mm～0.32mm/100mm, overgauge d+0.03, on narrow land, symmetry or asymmetric groove make narrow land be divided into some sections, recess width f2 between 0.5～2mm, groove center apart from f3 between 2mm～6mm.This drill bit can cut or scraping the hole wall shrinking, and to guarantee precision, improves the quality in hole and reduces the positive and negative burr in hole.
And for example: Chinese utility model patent ZL201220592135.8 has adopted three drift angle designs in bit cutting portion, to reduce axial force, and a kind of drill bit of processing carbon fibre reinforced composite and titanium alloy laminated plate has been proposed, in this technical scheme, three drift angles are respectively: first drift angle of 105 °-118 °, the 3rd drift angle of second drift angle of 60 °-65 ° and 8 °-11 °.This structure is also slotted by radially large anterior angle, has strengthened the Sharpness of cutter, and the hole that makes to process there will not be tears and burr phenomenon.
Utility model content
An object of the present utility model is to provide a kind of drill bit, is applicable to fibrous composite to carry out hole processing, improving the existing burr in the hole this type of material being processed in the past, break and the phenomenon such as layering.
Another object of the present utility model is to provide a kind of drill bit, can overcome the bad phenomenon such as the burr imported and exported at composite processing mesopore, cracked and hole wall layering simultaneously, and takes into account the cutter of broad applicability and production complexity.
The fibrous composite that the utility model is mentioned, be that a kind of matrix by continuous phase and the phase reinforcement that contained by matrix form, the materials such as glass fibre, carbon fiber, boron fibre, aramid fiber, silicon carbide fibre, asbestos fibre, whisker, wire and hard particulates of wherein take are the compounded material of reinforcement.The matrix material often having as: but be not limited only to synthetic resin, rubber, pottery, graphite, carbon, aluminium, magnesium, copper, titanium and alloy thereof etc.
These drill bits that the utility model provides comprise an elongated bodies member, have a longitudinal axis, can be installed to the shank on rotating machinery, a cutter body and a cutting termination.2 sword main cutting portions are at least contained in cutting termination, and cutter body at least contains 2 sword extruding cutting portions (being also referred to as secondary cutting portion).In the utility model, the word of " master ", " pair ", is for necessity that different parts statements are distinguished, but not a kind of restriction, also without the primary and secondary that relates to the concrete effect in each comfortable cutting.Concrete, these drill bits that the utility model provides belong to a kind of fluted drill.
The embodiment of a kind of drill bit that the utility model provides, some the helicla flutes with 0 ° ± 45 ° of helical angles are set in cutter body, each helicla flute forms some main cuttings portion with cutting intersection, termination, and each spiral fluted open side and cutter body external diameter intersection form some extruding cutting portions.The preferential helicla flute quantity of selecting is 2-4, as: 2,3 or 4.The preferential extruding cutting portion quantity of selecting is 2-4, as: 2,3 or 4.
The alleged external diameter of the utility model should be understood to comprise that cutter body outer is everywhere to the vertical range of axis, and cutting outer, termination is everywhere to the vertical range of axis.
The degree of depth that helicla flute has is 15%～60% of cutter body diameter, or is selected from arbitrary scope of 15%～25%, 25%～35%, 35%～45% and 45%～60%.Concrete, as: but be not limited only to 15%, 20%, 25%, 30%, 35%, 40%, 45%, 50%, 55% and 60%.
Each main cutting portion also has-35 °～+ 35 ° radial rakes, or be selected from-35 °～-25 ° ,-25 °～-15 ° ,-15 °～-5 ° ,-5 °～+ 5 ° ,+5 °～+ 15 ° ,+15 °～+ 25 ° and+arbitrary scope of 25 °～+ 35 °.
And 3 °～66 ° relief angles, or be selected from arbitrary scope of 3 °～23 °, 23 °～36 °, 36 °～46 °, 46 °～56 ° and 56 °～66 °.
After main cutting portion, knife face is the cambered surface of depression, and forms the first cusp at the apex point of cutting termination, and the shoulder in cutting termination forms the second cusp, and the first cusp exceeds second cusp 0.1mm～2mm, the preferential 0.1mm～1mm selecting.After main cutting portion, the curvature of knife face is 20%～50% of cutting Φ footpath, termination, or is selected from arbitrary scope of 20%～30%, 30%～40% and 40%～50%.Concrete, as: but be not limited only to 20%, 25%, 30%, 35%, 40%, 45% and 50%.
The embodiment of the another kind of drill bit that the utility model provides, in cutter body, setting has 0 ° ± 45 ° of helical angles, and the degree of depth is the first helicla flute of cutter body diameter 15%～60%, with there are 0 ° ± 45 ° of helical angles, and the degree of depth is the second helicla flute of cutter body diameter 15%～60%.The first helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the first main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the first extruding cutting portion; The second helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the second main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the second extruding cutting portion.
The embodiment of the another kind of drill bit that the utility model provides, also comprises
The first helicla flute, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
The second helicla flute, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
Triple helical groove, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
The first helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the first main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the first extruding cutting portion;
The second helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the second main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the second extruding cutting portion;
Triple helical groove forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the 3rd main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the 3rd extruding cutting portion.
Preferential select, the first helicla flute, the second helicla flute are identical with the structure of triple helical groove, all have the identical degree of depth and identical helical angle.
Preferential select, the first main cutting portion, the second main cutting portion are identical with the structure of the 3rd main cutting portion, all have identical radial rake and identical relief angle.
The embodiment of the another kind of drill bit that the utility model provides, also comprises
The first helicla flute, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
The second helicla flute, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
Triple helical groove, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
The 4th helicla flute, is arranged at cutter body, and the degree of depth is cutter body diameter 15%～60%, has 0 ° ± 45 ° helical angles;
The first helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the first main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the first extruding cutting portion;
The second helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the second main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the second extruding cutting portion;
Triple helical groove forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the 3rd main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the 3rd extruding cutting portion.
The 4th helicla flute forms and has-35 °～+ 35 ° radial rakes with cutting intersection, termination, and the 4th main cutting portion of 3 °～66 ° of relief angles, and its open side and cutter body external diameter intersection form the 4th extruding cutting portion.
Preferential select, the first helicla flute, the second helicla flute, triple helical groove are identical with the 4th spiral fluted structure, all have the identical degree of depth and identical helical angle.
Preferential select, the first main cutting portion, the second main cutting portion, the 3rd main cutting portion are identical with the structure of the 4th main cutting portion, all have identical radial rake and identical relief angle.
The various drill bits that the utility model provides, preferentially select all equal cutter body of external diameter value everywhere.
The various drill bits that the utility model provides, the width of preferential selection extruding cutting portion is cutter body external diameter girth 5%～30%, or is selected from arbitrary scope of 5%～10%, 10%～15%, 15%～20% and 25%～30%.Concrete, as: but be not limited only to 5%, 10%, 15%, 20%, 25% and 30%.。
The various drill bits that the utility model provides, with main cutting portion, extruding cutting portion acting in conjunction in fibrous composite, avoided processing mesopore imports and exports serious burr, breaks and the generation of the phenomenon such as layering in the past, especially the aeronautical product manufacturing industry of being used in a large number at fibrous composite, has significantly reduced the defective of product and has scrapped phenomenon.
The beneficial effect that technical solutions of the utility model realize:
The various drill bits that the utility model provides, the rear knife face of main cutting portion adopts the cambered surface of depression, and forms the first cusp at the apex point of cutting termination, and the shoulder in cutting termination forms the second cusp.Under the cooperation of the extruding cutting portion forming with cutter body external diameter intersection in spiral fluted open side, suppress the layering in composite processing completely, the generation of import and export burr and cracked phenomenon.In addition also than the feed speed of traditional processing drill, significantly improved more than 30%.
The various drill bits that the utility model provides, on the basis of existing common fluted drill, the reprocessing that its cutting portion, helicla flute and rear knife face etc. are located, the producer of the fluted drill that these are conventional can realize production, and without special technology and equipment, produce simple and easy.Due to, material and the processing technologys thereof such as the not additional diamond in the cutting termination of drill bit or coating, greatly reduce production cost, and price is suitable for a large amount of uses in industrial production.
Accompanying drawing explanation
Fig. 1 is the whole transversary schematic diagram of the utility model drill bit one embodiment;
Fig. 2 is the radially structure for amplifying schematic diagram of one embodiment of drill bit shown in Fig. 1;
Fig. 3 is the radially structure for amplifying schematic diagram of another embodiment of the utility model drill bit;
Fig. 4 is the whole transversary schematic diagram of another embodiment of the utility model drill bit;
Fig. 5 is the radially structure for amplifying schematic diagram of drill bit shown in Fig. 4;
Fig. 6 A is the schematic diagram that the utility model drill bit gets out import department's pattern in the 1st hole on fibrous composite;
Fig. 6 B is the schematic diagram that the utility model drill bit gets out the exit pattern in the 1st hole on fibrous composite;
Fig. 7 A is the schematic diagram that the utility model drill bit gets out import department's pattern in the 31st hole on fibrous composite;
Fig. 7 B is the schematic diagram that the utility model drill bit gets out the exit pattern in the 31st hole on fibrous composite;
Fig. 8 A is the schematic diagram that common spiral bit gets out import department's pattern in the 1st hole on fibrous composite;
Fig. 8 B is the schematic diagram that common spiral bit gets out the exit pattern in the 1st hole on fibrous composite;
Fig. 9 A is the schematic diagram that common spiral bit gets out import department's pattern in the 31st hole on fibrous composite;
Fig. 9 B is the schematic diagram that common spiral bit gets out the exit pattern in the 31st hole on fibrous composite.
The specific embodiment
Below in conjunction with accompanying drawing, describe the technical solution of the utility model in detail.The utility model embodiment is only unrestricted in order to the technical solution of the utility model to be described, although the utility model is had been described in detail with reference to preferred embodiment, those of ordinary skill in the art is to be understood that, can modify or be equal to replacement the technical scheme of utility model, and not departing from the spirit and scope of technical solutions of the utility model, it all should be encompassed in claim scope of the present utility model.
Fig. 1 is the whole transversary schematic diagram of the utility model drill bit one embodiment, and Fig. 2 is the radial structure schematic diagram of drill bit shown in Fig. 1, and Fig. 3 is the radial structure schematic diagram of another embodiment of the utility model drill bit.Referring to Fig. 2 and Fig. 3, as shown in Figure 1, this drill bit has a longitudinal axis 400, can be installed to shank on rotating machinery 300, cutter body 200 and a cutting termination 100.The first helicla flute 210 and the second helicla flute 220 are set in cutter body 200, and it all has the groove depth F of 0 ° ± 45 ° helical angle C and cutter body diameter 15%～60% separately.It will be understood by those skilled in the art that helicla flute is the continuous cell body that is arranged in a spiral manner cutter body, and any radial section of cutter body includes at least one trench bottom, corresponding have a groove depth.Each spiral fluted degree of depth should be understood to cutting axial region to carry out any radial section, and the groove depth of section is 15%～60% with respect to the diameter of the cutter body at this place.In the present embodiment, preferential the first helicla flute 210 of selecting and the helical angle of the second helicla flute 220 are 33 °, and groove depth is 30% of cutter body diameter.
Referring to Fig. 1, as shown in Figures 2 and 3, the first main cutting portion 110 and the second main cutting portion 120 are contained in cutting termination 100, rear knife face 111 curvature of the first main cutting portion are 50% the depression cambered surface in cutting Φ footpath, termination, apex point in cutting termination forms first cusp 112, and the shoulder in cutting termination forms second cusp 113.Rear knife face 121 curvature of the second main cutting portion are the cambered surface of 50% depression in cutting Φ footpath, termination, and at second first cusp 122 of apex point formation of cutting termination, the shoulder in cutting termination forms second the second cusp 123.
The first main cutting portion 110 and the second main cutting portion 120 all have-35 °～+ 35 ° radial rake E, and 3 °～66 ° relief angle A.In the present embodiment, the radial rake that the first main cutting portion 110 and the second main cutting portion 120 have and relief angle value equate.Rear knife face 121 curvature of the rear knife face 111 of the first main cutting portion and the second main cutting portion equate.The difference of height D of the first cusp 112,122 and the second cusp 113,123 is 1mm.
The open side of the first helicla flute 210 and cutter body 200 external diameter intersections form the first extruding cutting portion 211.The open side of the second helicla flute 220 and cutter body 200 external diameter intersections form the second extruding cutting portion 221.Width B of each extruding cutting portion of preferential selection is 5%～30% of cutter body external diameter girth.In the present embodiment, the width value of the first extruding cutting portion 211 and the second extruding cutting portion 221 is 20% of cutting termination external diameter girth.
In cutting, main cutting portion is near first cusp 112 at apex point center, first 122 contact workpiece to be machined, play certralizing ability and mainly applied axial cutting force, main cutting part is near the second cusp 113 of tip marginal portion, 123 mainly apply radial cutting force and are responsible for cut staple, and extruding cutting portion fully pushes and limit broken fiber swaying direction in cutting, has realized being thus difficult to the smooth cutting of the fibrous material of cutting.
Fig. 4 is the whole transversary schematic diagram of another embodiment of the utility model drill bit, and Fig. 5 is the radially structure for amplifying schematic diagram of drill bit shown in Fig. 4.As shown in Figure 4 and Figure 5, the first helicla flute 210, the second helicla flute 220 and triple helical groove 230 are set in cutter body 200, it all has the groove depth F of 0 ° ± 45 ° helical angle C and cutter body diameter 15%～60% separately.In the present embodiment, preferential the first helicla flute 210, the second helicla flute 220 and the triple helical groove 230 of selecting is 40 °, and groove depth is 25% of cutter body diameter.
Referring to Fig. 5, the first main cutting portion 110, the second main cutting portion 120 and the 3rd main cutting portion 130 are contained in cutting termination 100, rear knife face 111 curvature of the first main cutting portion are 20% the depression cambered surface in cutting Φ footpath, termination, apex point in cutting termination forms first cusp (not sign), at the shoulder of cutting termination, forms the second cusp 113.Rear knife face 121 curvature of the second main cutting portion are the cambered surface of 20% depression in cutting Φ footpath, termination, and at second first cusp 122 of apex point formation of cutting termination, the shoulder in cutting termination forms second the second cusp 123.Rear knife face 131 curvature of the 3rd main cutting portion are the cambered surface of 20% depression in cutting Φ footpath, termination, and the apex point in cutting termination forms the 3rd the first cusp (not sign), at the shoulder of cutting termination, forms the 3rd the second cusp 133.
The first main cutting portion 110, the second main cutting portion 120 and the 3rd main cutting portion 130 all have-35 °～+ 35 ° radial rake E, and 3 °～66 ° relief angle A.In the present embodiment, the radial rake that the first main cutting portion 110, the second main cutting portion 120 and the 3rd main cutting portion 130 have and relief angle value equate.The rear knife face 111 of the first main cutting portion, the rear knife face 121 of the second main cutting portion, and the curvature of the rear knife face 131 of the 3rd main cutting portion equates.Second the first cusp 122 and second the second cusp 123 difference of height D are 1.2mm, and three the first cusps and three the second cusps all have identical difference of height D.
The open side of the first helicla flute 210 and cutter body 200 external diameter intersections form the first extruding cutting portion 211.The open side of the second helicla flute 220 and cutter body 200 external diameter intersections form the second extruding cutting portion 221.The open side of triple helical groove 230 and cutter body 200 external diameter intersections form the 3rd extruding cutting portion 231.Width B of each extruding cutting portion of preferential selection is 5%～30% of cutter body external diameter girth.In the present embodiment, the width value of the first extruding cutting portion 211, the second extruding cutting portion 221 and the 3rd extruding cutting portion 231 is 15%.
In cutting, main cutting portion is near three first cusps at apex point center, and three the second cusps of the close tip of main cutting part marginal portion cut being difficult to the fibrous material of cutting.Its cutting effect is compared with the drill bit with the cutting termination of two the first cusps and two the second cusps, aspect service life, tolerance stability, process velocity, all has better cutting effect.
Will be appreciated that, similar with the technical scheme of foregoing description.When helicla flute quantity is 4, and rear knife face quantity is while being 4, and cutting termination has four the first cusps and four the second cusps accordingly.Cutting to fibrous composite is more abundant, and suppress the layering in composite processing, the generation of import and export burr and cracked phenomenon.
By the present embodiment, provide various drill bits, main carbide alloy wolfram steel and the high-speed tool steel of adopting manufactured, without additional diamond or coating, the common fluted drill producer can realize production, and without special technology and equipment, as: adopt common Digit Control Machine Tool to carry out reconditioning or/and processing also can be processed at non-Digit Control Machine Tool.Processing obtains drill bit after tested, and its properties is in Table 1.Common fluted drill is processed behind 100 holes, the passivation of its main cutting edge, and by contrast, the drill bit that the present embodiment provides at least can be processed 400 holes.
Table 1
Claims (10)
1. one kind for carrying out the drill bit of hole processing to fibrous composite, comprise a longitudinal axis, can be installed to the shank on rotating machinery, a cutter body and a cutting termination, 2 sword main cutting portions are at least contained in cutting termination described in it is characterized in that, and 2 helicla flutes with 0 ° ± 45 ° of helical angles are at least set in described cutter body;
The rear knife face of described main cutting portion is the cambered surface of depression, and it forms the first cusp with the apex point of described cutting termination, forms the second cusp with the shoulder of described cutting termination, second cusp 0.1mm～2mm described in the first described cusp exceeds.
2. one kind for carrying out the drill bit of hole processing to fibrous composite, comprise a longitudinal axis, can be installed to the shank on rotating machinery, a cutter body and a cutting termination, 2 sword main cutting portions are at least contained in cutting termination described in it is characterized in that, and 2 helicla flutes with 0 ° ± 45 ° of helical angles are at least set in described cutter body;
Described in each, spiral fluted open side and described cutter body external diameter intersection form some extruding cutting portions;
The rear knife face of described main cutting portion is the cambered surface of depression, and it forms the first cusp with the apex point of described cutting termination, forms the second cusp with the shoulder of described cutting termination, second cusp 0.1mm～2mm described in the first described cusp exceeds.
3. for fibrous composite being carried out to a drill bit for hole processing, it is characterized in that
Comprise a longitudinal axis, can be installed to the shank on rotating machinery, a cutter body and a cutting termination, 2 sword main cutting portions are at least contained in cutting termination described in it is characterized in that, and 2 helicla flutes with 0 ° ± 45 ° of helical angles are at least set in described cutter body;
Described in each, helicla flute and intersection, described cutting termination form main cutting portion, and described in each, spiral fluted open side and described cutter body external diameter intersection form some extruding cutting portions;
The rear knife face of described main cutting portion is the cambered surface of depression, and it forms the first cusp with the apex point of described cutting termination, forms the second cusp with the shoulder of described cutting termination, second cusp 0.1mm～2mm described in the first described cusp exceeds.
According to described in claim 2 or 3 for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that described extruding cutting portion quantity is 2～4.
According to described in claim 2 or 3 for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that width of described each extruding cutting portion is cutter body external diameter girth 5%～30%.
According to one of claim 1-3 Suo Shu for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that described helicla flute quantity is 2～4.
According to one of claim 1-3 Suo Shu for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that the degree of depth that described helicla flute has is 15%～60% of described cutter body diameter.
According to one of claim 1-3 Suo Shu for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that described main cutting portion has-35 °～+ 35 ° radial rakes.
According to one of claim 1-3 Suo Shu for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that described main cutting portion has 3 °～66 ° relief angles.
According to one of claim 1-3 Suo Shu for fibrous composite being carried out to the drill bit of hole processing, it is characterized in that described after each curvature of knife face be 20%～50% of cutting Φ footpath, termination.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201320460987.6U CN203401118U (en) | 2013-07-30 | 2013-07-30 | Drill bit used for performing hole machining on fiber composite material |
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| CN201320460987.6U CN203401118U (en) | 2013-07-30 | 2013-07-30 | Drill bit used for performing hole machining on fiber composite material |
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| CN104028812A (en) * | 2014-06-16 | 2014-09-10 | 同济大学 | Drill bit special for carbon fiber composite materials |
| CN104338977A (en) * | 2013-07-30 | 2015-02-11 | 上海名古屋精密工具股份有限公司 | Drill bit for machining holes in fiber composite materials |
| CN104959635A (en) * | 2015-07-10 | 2015-10-07 | 无锡蠡湖增压技术股份有限公司 | Groove cutter |
| KR20170135964A (en) | 2015-04-17 | 2017-12-08 | 샹하이 루이가오 인포메이션 테크놀로지 컴퍼니 리미티드 | Applicable materials in machining and machining |
| CN107775719A (en) * | 2016-08-25 | 2018-03-09 | 深圳光启尖端技术有限责任公司 | Drill bit and aperture knife tool and method for aramid fiber reinforced composite |
| CN108608040A (en) * | 2018-05-10 | 2018-10-02 | 大连理工大学 | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling |
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2013
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| CN104338977A (en) * | 2013-07-30 | 2015-02-11 | 上海名古屋精密工具股份有限公司 | Drill bit for machining holes in fiber composite materials |
| CN104338977B (en) * | 2013-07-30 | 2018-11-27 | 上海名古屋精密工具股份有限公司 | For carrying out the drill bit of hole machined to fibrous composite |
| CN104028812A (en) * | 2014-06-16 | 2014-09-10 | 同济大学 | Drill bit special for carbon fiber composite materials |
| KR20170135964A (en) | 2015-04-17 | 2017-12-08 | 샹하이 루이가오 인포메이션 테크놀로지 컴퍼니 리미티드 | Applicable materials in machining and machining |
| CN104959635A (en) * | 2015-07-10 | 2015-10-07 | 无锡蠡湖增压技术股份有限公司 | Groove cutter |
| CN107775719A (en) * | 2016-08-25 | 2018-03-09 | 深圳光启尖端技术有限责任公司 | Drill bit and aperture knife tool and method for aramid fiber reinforced composite |
| CN109746488A (en) * | 2017-11-02 | 2019-05-14 | 广东工业大学 | PCB micro-structure microbit |
| CN108608040A (en) * | 2018-05-10 | 2018-10-02 | 大连理工大学 | For composite material and its micro- serrated knife tool of the double ladders of the perpendicular sword of laminated construction high quality drilling |
| CN108608040B (en) * | 2018-05-10 | 2020-04-07 | 大连理工大学 | Vertical-edge double-step micro-tooth cutter for high-quality hole making of composite material and laminated structure of composite material |
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