CN103506680A - Cutting blade and milling tool using same - Google Patents
Cutting blade and milling tool using same Download PDFInfo
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- CN103506680A CN103506680A CN201310373286.3A CN201310373286A CN103506680A CN 103506680 A CN103506680 A CN 103506680A CN 201310373286 A CN201310373286 A CN 201310373286A CN 103506680 A CN103506680 A CN 103506680A
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Abstract
The invention discloses a cutting blade and a milling tool using the same. The cutting blade comprises a cutting blade body, which is slightly in a regular triangle plate shape and comprises an upper surface, a lower surface, and side surfaces, which connect the upper surface and the lower surface; the positions between two neighbored side surfaces are individually provided with an arc protruded part relative to the center of the cutting blade, each arc protruded part intersects with the upper surface and forms a protruded first arc cutting blade relative to the circumstance, and each first arc cutting edge forms corresponding summits of a regular triangle through the intersection line between the upper surface and each side surface, and the extension line of the intersection line. The cutting blade and the milling tool using the same has the characteristics of strong profile copying performance, good economy, convenient installation, high positioning precision, large clamping force, and high processed surface quality.
Description
Technical field
The present invention relates to metal cutting tool field, particularly relate to a kind of milling cutter using when cutting material is implemented to copying and be arranged on removably the cutting tip on this milling cutter.
Background technology
In profiling processing, because surface to be machined is nearly all curved-surface structure, therefore, the cutting edge that requires cutting tip is Circular Nose Cutting Edge, and cutting tip Circular Nose Cutting Edge radius must be less than the arc radius of processed curved surface.Like this, the radius size of Circular Nose Cutting Edge directly affects the profiling ability of this blade.Generally, the radius of Circular Nose Cutting Edge is less, and the profiling ability of cutting tip is stronger, and the scope of application is wider.
In profiling processing, the general circular shear blade that adopts, Fig. 1 carries out the cutting tip of copying in prior art, it is conical tabular that this blade body 100 is roughly, comprise upper surface 102, lower surface 103, connect upper surface 102 and the rear knife face 108 of lower surface 103, rear knife face 108 and the crossing circular arc cutting edge 107 forming of upper surface 102 and the installing hole 109 that partly runs through upper surface 102 and lower surface 103 in blade center, the localization part that wherein rear knife face 108 is circular shear blade.Circular shear blade because edge strength is high, good economy performance, highly versatile, and himself design feature and being widely used.But because the cutting edge 107 of circular shear blade is circular-arc, land is unbalance stress everywhere, differ greatly, in order to prevent that blade is because of the caused mechanical oscillation of stressed skewness, the cutting element of general assembling circular shear blade needs large diameter securing member so that larger clamping force to be provided, therefore, the general radius of installing hole 109 of circular knife is larger, in order to guarantee that blade has stronger chip removal ability and impact resistance, between cutting edge 107 and installing hole 109, must there is sufficient space, so the arc radius of fuzzy set sword is generally larger, its profiling ability is subject to larger restriction.Conventionally, the arc radius of fuzzy set sword all more than 3mm, cannot Machining Arc radius be less than the curved surface of 3mm.Especially, in profile milling processing, between circular shear blade and cutterhead mount pad, be to coordinate by taper seat, existence due to machining accuracy and assembly precision, after the taper of blade, knife face 108 is difficult to ensure card with the locating surface registration accuracy of cutterhead, make blade be assemblied in difficult control of runout of its cutting edge after cutterhead, the milling cutter of assembling circular shear blade crudy in profiling processing is difficult to ensure card.
Summary of the invention
The object of the invention is to overcome the deficiency of prior art, a kind of cutting tip is provided and uses the milling tool of this cutting tip, there is profiling ability strong, good economy performance, easy for installation, positioning precision is high, the large and high feature of machined surface quality of clamping force.
The technical solution adopted for the present invention to solve the technical problems is: a kind of cutting tip, comprises blade body; It is tabular that described blade body is slightly equilateral triangle, the side that this blade body has upper surface, lower surface and connects upper and lower surface; Between described each adjacent two sides, be also respectively arranged with the outside outstanding circular arc protuberance with respect to blade center, this circular arc protuberance and upper surface intersect the first circular arc cutting edge that formation is outwards given prominence to respect to periphery, and described each first circular arc cutting edge is by the corresponding vertex of upper surface and side intersection and equilateral triangle that extended line forms thereof.
The circular arc center of circle of described each first circular arc cutting edge is all positioned on the intersection of upper surface and side and the angular bisector of equilateral triangle that extended line forms thereof.
The arc radius R of described each first circular arc cutting edge all equates, and 1.0mm≤R≤3.5mm.
The arc chord angle θ that described each first circular arc cutting edge is corresponding all equates, and 240 ° of 220 ° of < θ <.
Described side and upper surface form angle α, and 70 ° of < α≤90 °, and the rear knife face of described cutting edge and upper surface form angle β, and 70 ° of < β≤90 °.
When described side and upper surface formation angle α=90 °, and the rear knife face of described cutting edge and upper surface are while forming angle β=90 °, described circular arc protuberance also intersects and forms the second circular arc cutting edge of outwards giving prominence to respect to periphery with lower surface, and described each second circular arc cutting edge is by the corresponding vertex of upper surface and side intersection and equilateral triangle that extended line forms thereof.
The circular arc center of circle of described each second circular arc cutting edge is all positioned on the intersection of upper surface and side and the angular bisector of equilateral triangle that extended line forms thereof; The arc radius R of described each second circular arc cutting edge all equates, and 1.0mm≤R≤3.5mm; The arc chord angle θ that described each second circular arc cutting edge is corresponding all equates, and 240 ° of 220 ° of < θ <.
It between described side and circular arc protuberance, is arc transition connection.
A milling tool that uses above-mentioned cutting tip, comprises cutterhead, and described cutterhead is provided with for the mount pad of described cutting tip is installed, and described mount pad comprises that a supporting bottom surface, two supportings side and one dodge hole; Match with the lower surface of described cutting tip in described supporting bottom surface, described two supporting sides respectively with corresponding the matching in adjacent two sides of described cutting tip, described dodge corresponding the matching of circular arc protuberance set between hole and described adjacent two sides.
Described mount pad is a plurality of, is evenly located at respectively the leading section of cutterhead.
Compared with prior art, the invention has the beneficial effects as follows:
1, cutting tip of the present invention, simple in structure, and processing accessibility and edge strength are taken into account, and have 3 circular arc cutting edges 7, better economy;
2, circular arc cutting edge is outwards outstanding with respect to blade center, and each circular arc cutting edge radius R is smaller, scope is: 1.0mm≤R≤3.5mm, not only possessed profiling, the external cutting of circular knife, the ability of building up by welding, and possess the cutting power of special small arc-shaped radius curved surface, be specially adapted to the smaller shallow slot Milling Process of curved surface arc radius;
3, milling cutter is the cutterhead that above-mentioned cutting tip is installed, the front end of this cutterhead body and Zhou Duanneng install some of described cutting tips, the installation of cutting tip can adopt screws clamp mode, such as establishing installing hole in blade center, on the mount pad of cutterhead, establishes screw hole, adopt screws clamp mode to make blade fix and lock onto on cutterhead, which has that location is installed is easy, and cutting-edge playback accuracy is high, and clamping force is large, processing vibration is little, machined surface quality advantages of higher;
4, blade employing equilateral triangle is basic configuration, San Ge side and bottom surface are plane, all relatively good assurances of machining accuracy of its Surface Machining precision and described cutterhead mount pad institute's corresponding side surface and bottom surface, and blade body and mount pad can be realized location well, improve the stability of blade location and the precision that blade repeats assembling, prevented in process machining accuracy and the not good caused vibration of assembly precision due to blade and mount pad;
5, because described blade adopts equilateral triangle, be basic configuration, installing hole radius can design relatively largely, and the clamping force of pinching screw blade body is relatively large, can guarantee that blade is in the stability of working angles, prevents the generation of vibration.
Below in conjunction with drawings and Examples, the present invention is described in further detail; But a kind of cutting tip of the present invention and use the milling tool of this cutting tip to be not limited to embodiment.
Accompanying drawing explanation
Fig. 1 is the perspective view of the circular shear blade of prior art;
Fig. 2 is the perspective view of embodiment mono-cutting tip of the present invention;
Fig. 3 is the top view of embodiment mono-cutting tip of the present invention;
Fig. 4 is the cutaway view along the A-A line in Fig. 3;
Fig. 5 is the D structure schematic diagram of embodiment mono-milling cutter of the present invention;
Fig. 6 is the schematic perspective view of the mount pad of embodiment mono-milling cutter of the present invention;
Fig. 7 is the assembling schematic diagram of embodiment mono-milling cutter of the present invention;
Fig. 8 is the B portion enlarged diagram in Fig. 7;
Fig. 9 is the perspective view of embodiment bis-cutting tips of the present invention;
Figure 10 is the top view of embodiment bis-cutting tips of the present invention;
Figure 11 is the cutaway view along the C-C line in Figure 10;
The D structure schematic diagram of Figure 12 embodiment bis-milling cutters of the present invention.
The specific embodiment
Embodiment mono-,
Referring to shown in Fig. 2 to Fig. 8, a kind of cutting tip of the present invention, this cutting tip forms eurymeric blade body 1 with hard materials such as carbide alloy, it is tabular that its profile is slightly equilateral triangle, wherein upper surface 2 and lower surface 3 are parallel to each other, lower surface 3 is as bearing-surface, side 4 connects upper surface 2 and lower surface 3, side 4 is intersected and is formed three peripheries 5 with upper surface 2, central authorities at upper surface 2 and lower surface 3, formation vertically connects blade body 1 through-thickness the installing hole 9 of this upper surface and lower surface 3, on this installing hole 9, form curved portions 14, curved portions 14 is the contact area that pinching screw 11 tapered portion compress described cutting tip.In addition, outside outstanding circular arc protuberance 6 with respect to blade installing hole 9 is set respectively between each adjacent side, and intersect and form the first circular arc cutting edge 7 of outwards giving prominence to respect to periphery 5 with upper surface 2, and this first circular arc cutting edge 7 is by each summit of equilateral triangle of upper surface 2.The circular arc center of circle of described each first circular arc cutting edge 7 is all positioned on upper surface 2 and the intersection of side 4 and the angular bisector N of equilateral triangle that extended line forms thereof.It between described side 4 and circular arc protuberance 6, is arc transition connection.The blade 1 of this form of implementation is 120 ° of Rotational Symmetries with respect to the center line M of installing hole 9.Being positioned at 3 circular arc protuberances 6 in equilateral triangle bight and upper surface 2 intersects and forms three section of first circular arc cutting edge 7, the corresponding arc chord angle θ of this three section of first circular arc cutting edge 7 all equates, 240 ° of 220 ° of < θ <, in this form of implementation, arc chord angle is got 236 °.Rear knife face and the upper surface of described cutting edge all form angle β, in order to guarantee intensity and the profile modeling function of cutting edge, scope to angle β has been done requirement: 90 ° of 70 ° of < β <, in this form of implementation, β=79 °, like this be designed with the effect of dodging, for reducing knife face after blade 8 in working angles with the friction of workpiece, improve cutter life.Adopt said structure to make the size of the tabular blade body of triangle 1 break away from the impact of the first circular arc cutting edge 7 arc radius, can be the first circular arc cutting edge 7 enough sharpness, intensity and chip spaces are provided, simultaneously because the Circular Nose Cutting Edge of its 236 ° of arc chord angles is outwardly with respect to periphery 5, thereby possessed copying ability.Because the first circular arc cutting edge 7 radiuses of described cutting tip are R, 1.0mm≤R≤3.5mm, R=1.5mm in this form of implementation, so this blade can be applied in the profiling processing of the incompetent minor radius curved surface of circular shear blade.
In this form of implementation, described cutting tip San Ge side 4 and lower surface 3 are straight locating surface.As shown in Figure 6, the mount pad 13 of cutterhead 10 has a supporting bottom surface 13A and two supporting side 13B and 13C, they are all planes, by the locating surface of described cutting tip and the supporting bottom surface 13A of described cutterhead mount pad 13, contact and align with 13C with two supporting side 13B, replace taper seat location structure of the prior art, contact more close and firm, thereby more effectively reduce the vibration in working angles, improve surface of the work crudy, can reduce cutting tip side 4 and the accuracy of manufacture requirement of milling cutter 12 own simultaneously, the position reproduction precision of the first circular arc cutting edge 7 and the structural stability of milling cutter 12 of cutting tip have effectively been improved.Replace existing monoblock type little Ren footpath profiling cutter.The arc radius of cutting edge 7 correspondences is R, and the equilateral triangle length of side that is the tabular blade of equilateral triangle 1 is L, for guaranteeing that cutting tip has good intensity and chip space, and 0.09L≤R≤0.14L, in this form of implementation, R=0.14L.Side 4 forms angle α with upper surface 2, in order to guarantee installation location and the profiling function of cutting tip, the scope of angle α has been done to requirement: 70 ° of < α≤90 °, the present embodiment, α=79 °.
A kind of milling tool that uses above-mentioned cutting tip of the present invention, this milling tool comprises cutterhead 10, on cutterhead 10, be provided with as the cutting tip 1 of the present embodiment be five, eurymeric blade.This eurymeric cutting tip is positioned on cutterhead 10 in the following manner: side 4 contacts and aligns with the supporting side (13B, 13C) of mount pad 13, lower surface 3 contacts and aligns with the supporting bottom surface 13A of mount pad 13, and be connected and fixed with cutterhead 10 by the pinching screw 11 through blade center's installing hole 9 and mount pad 13 upper screwed holes 17, as shown in Figure 7 and Figure 8.Especially, the upper surface 2 of this blade exceeds the general 0.05mm of mount pad peripheral plane 13D, the angle of blade side 4 and mount pad peripheral plane 13D than α little 0.5 °～1 °, the object of doing is like this that periphery 5 and the lateral bolster bearing surface (13B, 13C) of mount pad are compressed, and side 4 remainders and lateral bolster bearing surface (13B, 13C) keep certain intervals, during with assurance blade pressing, there is certain strain space, strengthen the clamping force of pinching screw blade.
Embodiment bis-,
Referring to shown in Fig. 9 to Figure 12, a kind of cutting tip of the present invention, be with the difference of embodiment mono-, described side 4 forms angle α=90 ° with upper surface 2, and the rear knife face 8 of cutting edge forms angle β=90 ° with upper surface 2, described circular arc protuberance also forms with lower surface is crossing the second circular arc cutting edge 71 of outwards giving prominence to respect to periphery, and described each second circular arc cutting edge 71 is by the corresponding vertex of lower surface 3 and side intersection and equilateral triangle that extended line forms thereof.Like this, this cutting tip just has three the first circular arc cutting edges 7 and three the second circular arc cutting edges 71, and the shape of the first circular arc cutting edge 7 and the second circular arc cutting edge 71 structure is all identical.The first circular arc cutting edge 7 of take is example, near chip-breaker the first circular arc cutting edge 7 extends toward blade installing hole 9 directions, the angle of chip-breaker front straight line segment 16Yu side 4 is 79 °, guarantee that cutting edge 7 has certain sharpness and intensity, blade body 1 is symmetrical about upper and lower surperficial 2,3 mid-plane, so has about the symmetrical curved portions 15A of above-mentioned mid-plane and curved portions 15B on this blade installing hole 9.Due to above-mentioned variation, the cutting edge of this form of implementation upper and lower surperficial 2,3 and rear knife face 8 can use, and cutting edge quantity is increased to 6, and blade life extends, and economy is better.
A kind of milling tool that uses above-mentioned cutting tip of the present invention, similar with the milling tool of embodiment mono-, its main distinction is: on the cutterhead 10 of this milling tool, be provided with as the illustrated negative insert of cutting tip the second form of implementation, cutting tip side 4 is 90 ° with the angle of mount pad peripheral plane 13D.
Milling cutter as the invention process form has more than been described, but has the invention is not restricted to this, can in the scope that does not depart from technological thought of the present invention, carry out suitable change.For example, although in form of implementation of the present invention, the mount pad 13 of the cutterhead 10 as shown in Fig. 5-Fig. 7, Figure 12 is provided with five upwards separating equal intervals week, but be not limited to this, can at random set the quantity of mount pad 13, preferably being cut the material of material and machining condition etc., taking into account and carry out suitable setting, in addition, by upwards separate unequal compartment of terrain configuration mount pad 13 in week, can prevent like this resonance of milling cutter 12.Again for example, the cutting tip 1 that above-mentioned form of implementation is equilateral triangle to basic configuration is illustrated, but is not limited to this, can adopt other shapes to design cutting tip 1.
In addition,, although be illustrated thering is the cutting tip of the installing hole 9 of through-thickness perforation, also installing hole 9 can be set, the clamping mode that for example adopts pressing plate to compress.
Above-mentioned is preferred embodiment of the present invention, not the present invention is done to any pro forma restriction.Although the present invention discloses as above with preferred embodiment, yet not in order to limit the present invention.Any those of ordinary skill in the art, in the situation that not departing from technical solution of the present invention scope, can utilize the technology contents of above-mentioned announcement to make many possible changes and modification to technical solution of the present invention, or the equivalent embodiment of assimilation such as are revised as.Therefore, every content that does not depart from technical solution of the present invention,, all should drop in the scope of technical solution of the present invention protection any simple modification made for any of the above embodiments, equivalent variations and modification according to the technology of the present invention essence.
Claims (10)
1. a cutting tip, comprises blade body; It is characterized in that: it is tabular that described blade body is slightly equilateral triangle the side that this blade body has upper surface, lower surface and connects upper and lower surface; Between described each adjacent two sides, be also respectively arranged with the outside outstanding circular arc protuberance with respect to blade center, this circular arc protuberance and upper surface intersect the first circular arc cutting edge that formation is outwards given prominence to respect to periphery, and described each first circular arc cutting edge is by the corresponding vertex of upper surface and side intersection and equilateral triangle that extended line forms thereof.
2. cutting tip according to claim 1, is characterized in that: the circular arc center of circle of described each first circular arc cutting edge is all positioned on the intersection of upper surface and side and the angular bisector of equilateral triangle that extended line forms thereof.
3. cutting tip according to claim 1, is characterized in that: the arc radius R of described each first circular arc cutting edge all equates, and 1.0mm≤R≤3.5mm.
4. cutting tip according to claim 1, is characterized in that: the arc chord angle θ that each described first circular arc cutting edge is corresponding all equates, and 240 ° of 220 ° of < θ <.
5. according to the cutting tip described in claim 1 or 2 or 3 or 4, it is characterized in that: described side and upper surface form angle α, and 70 ° of < α≤90 °, the rear knife face of described cutting edge and upper surface form angle β, and 70 ° of < β≤90 °.
6. cutting tip according to claim 5, it is characterized in that: when described side and upper surface formation angle α=90 °, and the rear knife face of described cutting edge and upper surface are while forming angle β=90 °, described circular arc protuberance also intersects and forms the second circular arc cutting edge of outwards giving prominence to respect to periphery with lower surface, and described each second circular arc cutting edge is by the corresponding vertex of upper surface and side intersection and equilateral triangle that extended line forms thereof.
7. cutting tip according to claim 6, is characterized in that: the circular arc center of circle of described each second circular arc cutting edge is all positioned on the intersection of upper surface and side and the angular bisector of equilateral triangle that extended line forms thereof; The arc radius R of described each second circular arc cutting edge all equates, and 1.0mm≤R≤3.5mm; The arc chord angle θ that described each second circular arc cutting edge is corresponding all equates, and 240 ° of 220 ° of < θ <.
8. cutting tip according to claim 1, is characterized in that: between described side and circular arc protuberance, be arc transition connection.
9. the milling tool of the use cutting tip as described in arbitrary claim in claim 1-8, it is characterized in that: comprise cutterhead, described cutterhead is provided with for the mount pad of the cutting tip as described in arbitrary claim in claim 1-8 is installed, and described mount pad comprises that a supporting bottom surface, two supporting sides and one dodge hole; Match with the lower surface of described cutting tip in described supporting bottom surface, described two supporting sides respectively with corresponding the matching in adjacent two sides of described cutting tip, described dodge corresponding the matching of circular arc protuberance set between hole and described adjacent two sides.
10. milling tool according to claim 9, is characterized in that: described mount pad is a plurality of, is evenly located at respectively the leading section of cutterhead.
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| CN201310373286.3A CN103506680B (en) | 2013-08-23 | 2013-08-23 | Cutting blade and milling tool using same |
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| CN201310373286.3A CN103506680B (en) | 2013-08-23 | 2013-08-23 | Cutting blade and milling tool using same |
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| CN103506680A true CN103506680A (en) | 2014-01-15 |
| CN103506680B CN103506680B (en) | 2017-02-01 |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106393452A (en) * | 2015-07-31 | 2017-02-15 | 三星钻石工业株式会社 | Cutter wheel |
| CN107530793A (en) * | 2015-04-17 | 2018-01-02 | 韩国冶金株式会社 | Cutting tool |
| WO2018002911A1 (en) | 2016-06-30 | 2018-01-04 | Iscar Ltd. | Cutting tool and triangular-shaped indexable cutting insert therefor |
| DE102016008089A1 (en) | 2016-06-30 | 2018-01-04 | Iscar Ltd. | Cutting tool and triangular indexable cutting insert for it |
| CN109648806A (en) * | 2018-11-16 | 2019-04-19 | 温州海航机械有限公司 | A kind of multistation cuts material device |
| WO2019097505A1 (en) | 2017-11-20 | 2019-05-23 | Iscar Ltd. | Triangular-shaped indexable cutting insert having recessed side surfaces and rotary cutting tool |
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| WO2019097505A1 (en) | 2017-11-20 | 2019-05-23 | Iscar Ltd. | Triangular-shaped indexable cutting insert having recessed side surfaces and rotary cutting tool |
| US10632548B2 (en) | 2017-11-20 | 2020-04-28 | Iscar, Ltd. | Triangular-shaped indexable cutting insert having recessed side surfaces and rotary cutting tool |
| JP2021503375A (en) * | 2017-11-20 | 2021-02-12 | イスカル リミテッド | Triangular indexable cutting inserts and rotary cutting tools with concave sides |
| JP7335238B2 (en) | 2017-11-20 | 2023-08-29 | イスカル リミテッド | Triangular indexable cutting inserts and rotary cutting tools with concave sides |
| CN109648806A (en) * | 2018-11-16 | 2019-04-19 | 温州海航机械有限公司 | A kind of multistation cuts material device |
| CN109648806B (en) * | 2018-11-16 | 2024-01-02 | 温州海航机械有限公司 | Multi-station material shearing device |
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