CN104582880A - Cutting insert, cutting tool, and method for manufacturing cut product - Google Patents
Cutting insert, cutting tool, and method for manufacturing cut product Download PDFInfo
- Publication number
- CN104582880A CN104582880A CN201380044416.7A CN201380044416A CN104582880A CN 104582880 A CN104582880 A CN 104582880A CN 201380044416 A CN201380044416 A CN 201380044416A CN 104582880 A CN104582880 A CN 104582880A
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- China
- Prior art keywords
- cutting edge
- cutting insert
- main cutting
- straight line
- hole
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/04—Cutting-off tools
- B23B27/045—Cutting-off tools with chip-breaking arrangements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/141—Specially shaped plate-like cutting inserts, i.e. length greater or equal to width, width greater than or equal to thickness
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
- B23B27/14—Cutting tools of which the bits or tips or cutting inserts are of special material
- B23B27/16—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped
- B23B27/1614—Cutting tools of which the bits or tips or cutting inserts are of special material with exchangeable cutting bits or cutting inserts, e.g. able to be clamped with plate-like cutting inserts of special shape clamped against the walls of the recess in the shank by a clamping member acting upon the wall of a hole in the insert
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B29/00—Holders for non-rotary cutting tools; Boring bars or boring heads; Accessories for tool holders
- B23B29/04—Tool holders for a single cutting tool
- B23B29/043—Tool holders for a single cutting tool with cutting-off, grooving or profile cutting tools, i.e. blade- or disc-like main cutting parts
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/20—Top or side views of the cutting edge
- B23B2200/202—Top or side views of the cutting edge with curved cutting edge
Abstract
The cutting insert of one embodiment of the present invention is provided with an upper face, a lower face, a side face which is connected to both the upper face and the lower face, a through-hole which penetrates through the cutting insert from the upper face to the lower face, and a main cutting blade which is partially located at the line of intersection between the upper face and the side face and which has a circular arc shape in a plan view. In the plan view, the center of the through-hole is located so as to be offset further toward the side opposite the side where the circular arc-shaped main cutting blade is formed than the center of an imaginary circle, the outer periphery of which corresponds to the circular arc of the main cutting blade.
Description
Technical field
The present invention relates to the manufacture method of a kind of cutting insert, cutting element and machining thing.
Background technology
As the cutting insert used in the machining being cut part, be known to the throw away chip described in Japanese Patent Publication 7-15207 publication (patent document 1).Usually, such blade is screwed on knife rest via the through hole being formed in center.Blade is to be fixed on the state of knife rest for machining.The periphery during top view of blade recorded in patent document 1 be circular, and has circular cutting edge, chip-breaker, the ridge be formed in chip-breaker along cutting edge formation.By making a part for the cutting edge of this circle and being cut part and contacting, carry out machining thus.
In recent years, in order to carry out trickle machining, small-sized cutting insert is required.But, when making merely cutting insert miniaturization, through hole must be reduced or reduce the interval of cutting edge and through hole.When excessively reducing through hole, be difficult to cutting insert to be stably fixed on knife rest.In addition, when reducing the interval of cutting edge and through hole, chip-breaker must be reduced.Therefore, be difficult to chip is flowed along chip-breaker.
Summary of the invention
Cutting insert based on a mode of the present invention possesses: upper surface; Lower surface; The side be connected respectively with described upper surface and described lower surface; From the through through hole to described lower surface of described upper surface; Arrange in the local, intersection portion of described upper surface and described side, and be arc-shaped when top view.Further, when top view, with periphery with imaginary circle corresponding to the circular arc of described main cutting edge center compared with, being centrally located to biased position, the opposition side being formed with the side of the main cutting edge of described arc-shaped of described upper surface of described through hole.
Accompanying drawing explanation
Fig. 1 is the stereogram of the cutting insert representing an embodiment of the invention.
Fig. 2 is the top view of the cutting insert shown in Fig. 1.
Fig. 3 is the side view of the cutting insert shown in Fig. 1.
Fig. 4 is the sectional view of the A-A section of the cutting insert shown in Fig. 2.
Fig. 5 is the sectional view of the B-B section of the cutting insert shown in Fig. 2.
Fig. 6 represents the periphery of the cutting insert shown in Fig. 2 and the concise and to the point figure of through hole.
Concise and to the point figure when Fig. 7 is the first variation of the cutting insert shown in top view Fig. 6.
Concise and to the point figure when Fig. 8 is the second variation of the cutting insert shown in top view Fig. 6.
Concise and to the point figure when Fig. 9 is the 3rd variation of the cutting insert shown in top view Fig. 6.
Figure 10 is the stereogram of the 4th variation representing the cutting insert shown in Fig. 1.
Figure 11 is the stereogram of the cutting element representing an embodiment of the invention.
Figure 12 is the amplification stereogram after being amplified by the region C of the cutting element shown in Figure 11.
Figure 13 is the stereogram of an operation of the manufacture method of the machining thing representing an embodiment of the invention.
Figure 14 is the stereogram of an operation of the manufacture method of the machining thing representing an embodiment of the invention.
Figure 15 is the stereogram of an operation of the manufacture method of the machining thing representing an embodiment of the invention.
Detailed description of the invention
< cutting insert >
Below, the cutting insert 1 of accompanying drawing to an embodiment is used to be described in detail.Wherein, referring to each figure in, for convenience of explanation, only simplifiedly show in the component parts of embodiment, in order to critical piece essential to the invention is described.Therefore, cutting insert of the present invention can possess each not shown arbitrary component parts of this description institute reference.In addition, the size of the parts in each figure also shows the actual size of component parts and the dimensional ratios etc. of each parts unfaithfully.
As shown in figs. 1 to 6, the cutting insert 1 of present embodiment has upper surface 3, lower surface 5 and side 7.Side 7 is connected respectively with upper surface 3 and lower surface 5.Cutting insert 1 has from the through through hole 9 to lower surface 5 of upper surface 3.In addition, cutting insert 1 has the axle X orthogonal with upper surface 3 and lower surface 5.Through hole 9 is parallel with axle X, and becomes along axle X-shaped.
Through hole 9 is arranged for and inserts screw when cutting insert 1 being screwed on the knife rest of cutting element.It should be noted that, as method cutting insert 1 being fixed on knife rest, also can replace based on the fixing method of screw thread, and adopt the method employing clamping structure.
In the present embodiment, the through direction of through hole 9 is set to above-below direction.In other words, the bearing of trend of axle X is set to above-below direction.Further, by the face of the opening of through hole 9, the face that is formed with cutting edge is set to upper surface 3, and, the face not being formed with cutting edge is set to lower surface 5.Therefore, the above-below direction of the cutting insert 1 of the present embodiment below described in detail might not be consistent with above-below direction when using cutting insert 1.
Upper surface 3 in the cutting insert 1 of present embodiment and the Breadth Maximum of lower surface 5 are 5 ~ 20mm.In addition, from lower surface 5 to the height of upper surface 3 be 2 ~ 5mm.Here, the height from lower surface 5 to upper surface 3 refers to, the width on the direction parallel with axle X between the upper end of upper surface 3 and the lower end of lower surface 5.
Cutting edge is formed at upper surface 3 and the place of intersection portion of side 7.As upper cutting edge, cutting insert 1 possesses main cutting edge 11 and front cutting edge 13.At upper surface 3 and the local, intersection portion of side 7, main cutting edge 11 and front cutting edge 13 are set.Specifically, main cutting edge 11 is arranged in the end side (left side of Fig. 2) of a side of upper surface 3.In addition, front cutting edge 13 is arranged in the end side (right side of Fig. 2) of the opposing party of upper surface 3.
It should be noted that, now, upper surface 3 and the intersection portion of side 7 are not the crossing and strict wire shaped formed in two faces.If upper surface 3 sharply acutangulates with the intersection portion of side 7, then the durability going up cutting edge reduces.Therefore, implement so-called Honing process to the part that upper surface 3 is crossing with side 7, this part becomes curve form slightly.
In addition, intersection portion also has a pair straight line portion 15 except having main cutting edge 11 and front cutting edge 13.A pair straight line portion 15 and is continuously clipped between front cutting edge 13 and main cutting edge 11.Specifically, a pair straight line portion 15 is continuous respectively with the two ends of main cutting edge 11.In addition, a pair straight line portion 15 is continuous respectively with the two ends of front cutting edge 13.In other words, the end of the side that a pair straight line portion 15 is respective is connected with main cutting edge 11.In addition, the end of the opposing party that a pair straight line portion 15 is respective is connected with front cutting edge 13.
Main cutting edge 11 and front cutting edge 13 are arc-shaped when top view respectively.The end (part being positioned at the leftmost side in Fig. 2) being centrally located at a side of upper surface 3 of the main cutting edge 11 of arc-shaped.In addition, the end (part being positioned at the rightmost side in Fig. 2) being centrally located at the opposing party of upper surface 3 of the front cutting edge 13 of arc-shaped.The radius of curvature of the main cutting edge 11 of arc-shaped is larger than the radius of curvature of the front cutting edge 13 of arc-shaped.That is, main cutting edge 11 depicts the curve milder than front cutting edge 13.
Main cutting edge 11 in the cutting insert 1 of present embodiment is different from that small curvilinear cutting edge of so-called comer cutting edge, for playing the position of function in machining as main cutting edge.Therefore, the width L1 (width of the above-below direction in Fig. 2) of the main cutting edge 11 in present embodiment is larger than the width L2 of through hole 9.In addition, the width between the two ends of main cutting edge 11 is also large than the width L2 of through hole 9.
It should be noted that, in the present embodiment, above-mentioned " width " refers to, the distance on the direction orthogonal with the line segment of the end of a side and the end of the opposing party that link upper surface 3.In addition, the distance on the direction parallel with the line segment of the end of the opposing party with the end of a side linking upper surface 3 is set to " length ".
Upper surface 3 and lower surface 5 are roughly the same shape.That is, the periphery of lower surface 5 is by relatively large circular arc, relatively little circular arc and form with the position of these circular arc continuous print a pair linearity.In the present embodiment, upper surface 3 and lower surface 5 are similar figures, but are not identical size.Lower surface 5 is the size of a circle less of upper surface 3.As shown in Figure 3, when side-looking is observed, side 7 be formed as along with from upper surface side towards lower face side close to axle X.
Side 7 is connected respectively with upper surface 3 and lower surface 5, has the effect as rear knife face.Side 7 has the region 7a of curve form and the region 7b of flat shape.The part of the arc-shaped in the periphery of the region 7a of curve form and upper surface 3 and lower surface 5 is connected.A pair straight line portion 15 in the periphery of the region 7b of flat shape and upper surface 3 and lower surface 5 is connected.
In the cutting insert 1 of present embodiment, intersection portion has and the two ends of main cutting edge 11 continuous print a pair straight line portion 15 respectively, and side 7 has the region 7b of the flat shape be connected with straight line portion 15.When having the region 7b of such flat shape, cutting insert 1 stably can be fixed on knife rest.
When using screw that cutting insert 1 is screwed on knife rest, by making the region 7b of flat shape contact with knife rest, cutting insert 1 can be suppressed to rotate around the central shaft of through hole 9.In addition, even if when using cutting insert 1, cutting insert 1 is applied with larger power on the direction rotated, cutting insert 1 contacts in face in the 7b of region with knife rest, therefore, it is possible to stably suppress cutting insert 1 to rotate.
In order to more stably suppress cutting insert 1 to rotate, the area of the region 7b of the flat shape in preferred side 7 is large.Therefore, be preferably, at upper surface 3 with the intersection portion of side 7, the ratio shared by a pair straight line portion 15 is high.Specifically, be preferably, the length of a pair straight line portion 15 is longer than the internal diameter L2 of through hole 9 respectively.
In addition, more stably suppress cutting insert 1 to rotate, be preferably, during top view, be acute angle respectively by the angle theta of a pair imaginary line of a pair straight line portion 15.This is because, under these circumstances, a pair straight line portion 15 can be made to be positioned at the position of the central shaft away from through hole 9.
In the cutting insert 1 of present embodiment, as shown in Figure 6, when top view, with periphery with imaginary circle R1 corresponding to the circular arc of main cutting edge 11 center R11 compared with, the center 9a of through hole 9 is arranged in biased position, the opposition side of main cutting edge 11 side being formed with arc-shaped of upper surface 3.In other words, when this imaginary circle R1 of the part circular arc of main cutting edge 11 being contained in periphery is projected on upper surface 3, compared with the center R11 of this imaginary circle R1, the center 9a of through hole 9 is arranged in the position of the end of the opposing party close to upper surface 3.In figure 6, compared with the center R11 of imaginary circle R1, the center 9a of through hole 9 is positioned at right side.
Therefore, without the need to excessively reducing through hole 9, just can guarantee that the interval of main cutting edge 11 and through hole 9 is larger.In the present embodiment, the side of the main cutting edge 11 being formed with arc-shaped of upper surface 3 is corresponding with the end side of a side, and the side of the main cutting edge 11 away from arc-shaped of upper surface 3 is corresponding with the end side of the opposing party.
Specifically, be preferably, the center 9a of through hole 9, compared with the center R11 of imaginary circle R1, is positioned at the distance of about 10 ~ 80% of the radius of curvature of the radius of imaginary circle R1, i.e. main cutting edge 11 position biased to opposition side.Such as, when the radius of curvature of the main cutting edge 11 in the cutting insert 1 of present embodiment is set to 3mm, be preferably, the center 9a of through hole 9 end side be positioned at from the center R11 of imaginary circle R1 to the opposing party is biased the position of about 0.3 ~ 2.4mm.It should be noted that, when top view, by R2, the imaginary circle that periphery is corresponding with the circular arc of front cutting edge 13 is shown.
In the cutting insert 1 of present embodiment, the main cutting edge 11 of arc-shaped is formed as larger than semicircle.Further, a pair straight line portion 15 is continuous smoothly with the end of the main cutting edge 11 of arc-shaped.Therefore, the width between a pair straight line portion 15 narrows along with leaving from main cutting edge 11.Therefore, it is possible to suppress the overall volume of cutting insert 1 excessively to increase, and guarantee that the width of main cutting edge 11 is larger.
In the present embodiment, when top view, interval each other reduces along with leaving from main cutting edge 11 for a pair straight line portion 15.Under these circumstances, and the part of side 7 that is connected of these straight line portioies 15 also along with interval from the end side of a side towards the end side of the opposing party and each other diminishes.
Therefore, when cutting insert 1 is fixed on knife rest, the position of cutting insert 1 easily can be determined.Specifically, when cutting insert 1 is installed on knife rest, by along making cutting insert 1 contact with knife rest from main cutting edge 11 towards the direction of front cutting edge 13 during top view, easily can realize location.
Particularly, in the present embodiment, the region be connected with a pair straight line portion 15 in side 7 becomes the region 7b of pair of planar shape.Therefore, when cutting insert 1 is fixed on knife rest, more easily can carries out the location of cutting insert 1, and cutting insert 1 is more stably fixed on knife rest.
Now, the center 9a of through hole 9 is positioned at the position of the end side of a side of compared with the two ends of main cutting edge 11 top surperficial 3.Specifically, the center 9a of through hole 9 is positioned at the end side of a side of upper surface 3 compared with the line segment at the two ends of link main cutting edge 11.The center 9a of through hole 9 is positioned at the position of the end close to the opposing party, then more can increase the interval of main cutting edge 11 and through hole 9.
In the present embodiment, the width between a pair straight line portion 15 narrows along with leaving from main cutting edge 11.Therefore, by through hole 9 is formed at above-mentioned position, the interval of through hole 9 and a pair straight line portion 15 can be suppressed excessively to reduce.Thereby, it is possible to make the durability of cutting insert 1 good.
By make the end side of a side of cutting insert 1 under the state outstanding from the knife rest of cutting element be cut part and contact, carry out machining thus.Therefore, when carrying out trickle machining, require that the width of cutting insert 1 is less, but the length reducing cutting insert 1 might not be required.
Upper surface 3 has land face 17, chip-breaker 19 and interarea 21.Land face 17 is positioned at the periphery of upper surface 3 and is connected with upper cutting edge.Specifically, in the inner side of main cutting edge 11 and front cutting edge 13, to be respectively arranged with land face 17 with main cutting edge 11 and front cutting edge 13 continuous print mode.
Chip-breaker 19 is positioned at the position of the top central side of surperficial 3 compared with land face 17.Chip-breaker 19 is the structure of the concave shape formed by the face comprising the first inclined plane 19a and the second inclined plane 19b.First inclined plane 19a is height reduction along with the center towards upper surface 3.Second inclined plane 19b is positioned at the position by central side compared with the first inclined plane 19a, and highly increases along with the center towards upper surface 3.Interarea 21 is positioned at the position by central side compared with chip-breaker 19.In addition, interarea 21 is the tabular surface vertical with axle X.
Land face 17 is formed as, the tabular surface almost parallel with lower surface 5 or the highly lower inclined plane along with the center towards upper surface 3.It should be noted that, " almost parallel " does not also mean that perfect parallelism, and refers to can be the inclination slightly of about ± 5 °.At lower surface 5 and uneven and be difficult to evaluate whether parallel with lower surface 5, only need replace lower surface 5 and compare with axle X.That is, only need be undertaken evaluating by whether land face 17 is vertical with axle X.
Cutting edge is formed in land face 17 and the place of intersection portion of side 7.Land face 17 is arranged for the intensity improving upper cutting edge.When not having land face 17, be formed with cutting edge at the first inclined plane 19a of chip-breaker 19 and the place of intersection portion of side 7.As mentioned above, the first inclined plane 19a being positioned at the inner side in land face 17 is along with the center towards upper surface 3 and the inclined plane of height reduction.Therefore, interior angle formed by the first inclined plane 19a and side 7 is less.But land face 17 and interior angle formed by side 7 are larger than interior angle formed by the first inclined plane 19a and side 7.Therefore, by having land face 17, the intensity of upper cutting edge can be improved.
It should be noted that, if for the purpose of the machinability improving upper cutting edge, then also can adopt and not there is land face 17 and the structure being formed with cutting edge at the place of intersection portion of the first inclined plane 19a and side 7.This is because upper cutting edge can become sharp shape.The interval of the periphery of the width upper surface 3 in land face 15 and the upper end of the first inclined plane 19a illustrates.The width in land face 17 suitably sets according to machining condition, such as, set in the scope of 0.05 ~ 0.2mm.
Chip-breaker 19 is positioned at the inner side in land face 17.In the cutting insert 1 of present embodiment, be formed with chip-breaker 19 respectively in the inner side in the land face 17 be connected with main cutting edge 11 and the inner side in land face 17 that is connected with front cutting edge 13.The chip that chip-breaker 19 cuts as the pickup in upper cutting edge, so-called rake face and play function.Therefore, the chip being cut part is flowed in the mode transmitted on the surface of chip-breaker 19.In order to pick up chip well, the first inclined plane 19a of chip-breaker 19 becomes the inclined plane of the height step-down along with the center towards upper surface 3.
As long as set in the scope of such as 10 ° ~ 50 ° with the angle of inclination that angle formed by the lower surface 5 in the section vertical with the first inclined plane 19a and the first inclined plane 19a represents.As long as the first inclined plane 19a is height step-down along with the center towards upper surface 3.Therefore, can being made up of multiple regions that the angle of inclination when analysing and observe observation is different from each other, in addition, also can be sag vertical curve shape.
Second inclined plane 19b is positioned at the inner side of the first inclined plane 19a.Second inclined plane 19b plays the effect making the chip curling curl flowed on the first inclined plane 19a.Be helical form by chip deformation, thus cutting insert 1 can play excellent chip discharge.Therefore, the region close to interarea 21 in the second inclined plane 19b is highly increased along with leaving periphery.
Specifically, the second inclined plane 19b becomes the higher inclined plane of the height of central side compared with the outer circumferential side in upper surface 3.With in the section vertical with the second inclined plane 19b, angle of inclination that angle formed by the above-mentioned inclined plane of lower surface 5 and the second inclined plane 19b represents such as sets in the scope of 5 ° ~ 50 °.
In the cutting insert 1 of present embodiment, the main cutting edge 11 of arc-shaped is arranged partly in the intersection portion of upper surface 3 with side 7.In addition, the center 9a of through hole 9 is positioned at position biased to the end side of the opposing party compared with the center R11 of imaginary circle R1.Therefore, chip-breaker 19 becomes, the structure that the width of the part adjacent with the central authorities of arc-shaped in main cutting edge 11 is larger than the width of the part adjacent with the end of arc-shaped in main cutting edge 11.
Compared with the end of the arc-shaped in main cutting edge 11, the central authorities of the circular arc in main cutting edge 11 use as the region of main cutting edge in machining.Now, due in chip-breaker 19, the width in adjacent with above-mentioned part region is relatively large, flow therefore, it is possible to stably make to be cut part to chip-breaker 19.
Multiple projection is formed in chip-breaker 19.In the cutting insert 1 of present embodiment, as shown in Figure 2, be formed with five the first projections 23 at the chip-breaker 19 of the inner side being arranged in main cutting edge 11, be formed with second projection 25 at the chip-breaker 19 of the inner side being arranged in front cutting edge 13.First projection 23 and the second projection 25 are formed as making chip deformation and making the flow direction of chip stablize.
Multiple first projection 23 is outstanding from the central side residing for interarea 21 towards the outer circumferential side residing for land face 17 respectively.Now, multiple first projections 23 in present embodiment are not given prominence to from the center R11 of imaginary circle R1 respectively toward the outer side, but give prominence to along the imaginary line Z extended from the center 9a of through hole 9 towards main cutting edge 11 respectively.
Chip is flowed in the mode transmitted on land face 17, first inclined plane 19a and the second inclined plane 19b, and is curled into helical form at the second inclined plane 19b place.That is, chip is flowed towards the second inclined plane 19b.In the present embodiment, the second inclined plane 19b with and through hole 9 mode with constant interval formed, the flow direction of therefore chip becomes the direction from main cutting edge 11 towards through hole 9.
Projection in present embodiment is given prominence to along the imaginary line Z extended from the center 9a of through hole 9 towards main cutting edge 11, therefore, it is possible to stably control the flow direction of chip by projection.
As the material of cutting insert 1, such as, superhard alloy or cermet etc. can be enumerated.As the composition of superhard alloy, such as, the powder adding cobalt (Co) in tungsten carbide tool (WC) is had to carry out sintering and the WC-TiC-TaC-Co of the WC-Co generated, the WC-TiC-Co adding charing titanium (TiC) in WC-Co or interpolation charing tantalum (TaC) in WC-TiC-Co.In addition, cermet is the sintered composite materials of composition metal in ceramic component, specifically, can enumerate to carbonize the titanium compound that titanium (TiC) or titanium nitride (TiN) are main component.
The surface of cutting insert 1 also can use chemical vapor deposition (CVD) method or physical vapor deposition (PVD) method to be applied by tunicle.As the composition of tunicle, charing titanium (TiC), titanium nitride (TiN), charcoal titanium nitride (TiCN) or aluminium oxide (Al can be enumerated
2o
3) etc.
The cutting insert 1 of present embodiment has the upper surface 3 of above-mentioned shape, but the peripheral shape of upper surface 3 is not limited thereto.In the cutting insert 1 of present embodiment, intersection portion is made up of main cutting edge 11, front cutting edge 13 and a pair straight line portion 15, but such as also can be assigned to by the curve part with the radius of curvature different from the radius of curvature of main cutting edge 11 connect main cutting edge 11 and a pair straight line portion 15.
In addition, also can be such as the shape of the variation shown in Fig. 7 ~ 10.It should be noted that, different in order to clearly from the variation of Fig. 7 ~ 10, the concise and to the point figure of profile during cutting insert 1 shown in expression top view Fig. 2 shown in Figure 6 and the position of through hole 9.
As shown in Figure 7, the first variation is identical with the cutting insert 1 shown in Fig. 6, and intersection portion has main cutting edge 11 and a pair straight line portion 15 of arc-shaped, but intersection portion does not have the front cutting edge of arc-shaped.When upper surface 3 is such structure, can guarantee that the region of the flat shape in side 7 is larger.Therefore, it is possible to cutting insert 1 is more stably fixed on knife rest.
In addition, as shown in Figure 8, the second variation is identical with the cutting insert 1 shown in Fig. 6, and intersection portion has the main cutting edge 11 of arc-shaped, the front cutting edge 13 of arc-shaped and a pair straight line portion 15.On the other hand, in the second variation, the radius of curvature of main cutting edge 11 is equal with the radius of curvature of front cutting edge 13, and a pair straight line portion 15 is almost parallel each other.When intersection portion is such structure, front cutting edge 13 can be used identically with main cutting edge 11.Such as, because of repeatedly carry out machining cause main cutting edge 11 to wear and tear time, main cutting edge 11 can be replaced and similarly use front cutting edge 13.
It should be noted that, radius of curvature is equal to be not limited to strictly identical, and refers to that the radius of curvature of a side is about 95% ~ 105% of the radius of curvature of the opposing party.In addition, be almost parallelly not limited to perfect parallelism, also can have ± the deviation of about 5 °.
In addition, as shown in Figure 9, cutting insert 1 shown in 3rd variation with Fig. 6 is identical, and intersection portion has main cutting edge 11 and a pair straight line portion 15 of arc-shaped, but the end of the opposition side of the end be connected with main cutting edge 11 in a pair straight line portion 15 is linked by straight line.When intersection portion is such structure, the length of upper surface 3 can be shortened.In addition, region in side 7, that be connected with the straight line linking a pair straight line portion 15 is flat shape, therefore by making this region abut cutting insert 1 more stably can be fixed on knife rest with knife rest.
In addition, the cutting insert 1 shown in Fig. 1 is the structure being formed with multiple first projection 23 in chip-breaker 19, however as projection, as shown in Figure 10, also can for being formed with the structure of multiple 3rd projection 27 on interarea 21.
< cutting element >
Next, the cutting element 101 of accompanying drawing to an embodiment of the invention is used to be described.It should be noted that, Figure 12 by Figure 11, cutting insert 1 be installed on knife rest 103 part amplify after amplification view.
As shown in Figure 11,12, the cutting element 101 of present embodiment possesses: the knife rest 103 in front with edge cutter groove 107; Cutting insert 1 that be installed on edge cutter groove 107 with main cutting edge 11 from the mode that the front end of knife rest 103 is given prominence to, that be representative with above-mentioned embodiment.
The clavate shape of knife rest 103 in elongated extension.Further, an edge cutter groove 107 is provided with in the front of knife rest 103.Edge cutter groove 107 is the part of installing cutting insert 1, relative to the front end face opening of knife rest 103.Now, by edge cutter groove 107 also relative to the lateral opening of knife rest 103, the installation of cutting insert 1 can easily be carried out thus.Edge cutter groove 107 has the installation seat surface parallel with the lower surface of knife rest 103, be positioned at and the constraint side of installing on direction that seat surface intersects.
In edge cutter groove 107, cutting insert 1 is installed.Cutting insert more than the 1 cutting edge mode outstanding to the front of knife rest 103 is installed.Specifically, the mode that the main cutting edge 11 of the arc-shaped in cutting insert more than 1 cutting edge is outstanding laterally compared with the front end of knife rest 103 is installed on knife rest 103.The main cutting edge 11 of above cutting edge is positioned at the mode from position the most outstanding laterally, the front end of knife rest 103, cutting insert 1 is installed on edge cutter groove 107.
In the present embodiment, cutting insert 1 is fixed on knife rest 103 by screw 105.That is, screw 105 is inserted the through hole 9 of cutting insert 1, the front end of this screw 105 is inserted the screwed hole (not shown) being formed at edge cutter groove 107, thus screw 105 and screwed hole are screwed togather.
Knife rest 103 can use steel, cast iron etc.Particularly, the steel preferably using toughness high in these parts.
The manufacture method > of < machining thing
Next, the manufacture method of accompanying drawing to the machining thing of one embodiment of the present invention is used to be described.
Machining thing is by carrying out machining to being cut part 201 and making.The manufacture method of the machining thing in present embodiment possesses following operation.That is,
(1) operation being cut part 201 rotation is made;
(2) make with the main cutting edge 11 of the above-mentioned embodiment cutting element 101 that is representative with rotate be cut the operation that part 201 contacts;
(3) make cutting element 101 from the operation being cut part 201 and leaving.
More specifically, first, as shown in figure 13, make to be cut part 201 to rotate around axle Y-direction Y1 direction.In addition, by making cutting element 101 move along Y2 direction, thus make cutting element 101 relatively close to being cut part 201.Next, as shown in figure 14, making the main cutting edge 11 of cutting element 101 and be cut part 201 and contact, cutting being cut part 201.Further, as shown in figure 15, by making cutting element 101 move along Y3 direction, thus cutting element 101 is left relatively from being cut part 201.
In the present embodiment, axle Y to be fixed and close to cutting element 101 under making to be cut the state that part 201 rotates.In addition, in fig. 14, contact by the main cutting edge 11 of cutting insert 1 with the part 201 that is cut rotated thus cut being cut part 201.In addition, in fig .15, make to be cut part 201 and leave cutting element 101 under the state rotated.It should be noted that, in the machining of the manufacture method of present embodiment, in each operation, by mobile cutting element 101, make cutting element 101 and be cut part 201 and contact or cutting element 101 is left from being cut part 201, be certainly not limited to such mode.
Such as, can, in the operation of (1), make to be cut part 201 close to cutting element 101.In the same manner, in the operation of (3), can make to be cut part 201 and leave from cutting element 101.When proceeding machining, only need keep the state that cutting element 101 is rotated, repeating to make the operation that the main cutting edge 11 of cutting insert 1 contacts with the diverse location being cut part 201.
It should be noted that, as the typical example of material being cut part 201, carbon steel, steel alloy, stainless steel, cast iron or nonferrous metal etc. can be enumerated.
Description of reference numerals
1 ... cutting insert
3 ... upper surface
5 ... lower surface
7 ... side
9 ... through hole
11 ... main cutting edge
13 ... front cutting edge
15 ... a pair straight line portion
17 ... land face
19 ... chip-breaker
21 ... interarea
23 ... first projection
25 ... second projection
27 ... 3rd projection
101 ... cutting element
103 ... knife rest
105 ... screw
107 ... edge cutter groove
201 ... be cut part
Claims (11)
1. a cutting insert, is characterized in that, possesses:
Upper surface;
Lower surface;
The side be connected respectively with described upper surface and described lower surface;
From the through through hole to described lower surface of described upper surface;
Arrange in the local, intersection portion of described upper surface and described side, and be the main cutting edge of arc-shaped when top view,
When top view, with periphery with imaginary circle corresponding to the circular arc of described main cutting edge center compared with, being centrally located to biased position, the opposition side being formed with the side of the main cutting edge of described arc-shaped of described upper surface of described through hole.
2. cutting insert according to claim 1, wherein,
Described intersection portion has and the two ends of described main cutting edge continuous print a pair straight line portion respectively.
3. cutting insert according to claim 2, wherein,
Described intersection portion also has front cutting edge, described a pair straight line portion is clipped between described front cutting edge and described main cutting edge, described front cutting edge is continuous with described main cutting edge by described a pair straight line portion, and described front cutting edge is arc-shaped when top view.
4. cutting insert according to claim 3, wherein,
The radius of curvature of described front cutting edge is less than the radius of curvature of described main cutting edge.
5. cutting insert according to any one of claim 1 to 4, wherein,
Described upper surface has the chip-breaker formed along described main cutting edge and the multiple projections be formed in this chip-breaker.
6. cutting insert according to claim 5, wherein,
Described multiple projection is arranged along the imaginary line extended from the center of described through hole towards described main cutting edge.
7. cutting insert according to claim 2, wherein,
When top view, along with leaving from described main cutting edge, interval each other diminishes described a pair straight line portion in described intersection portion.
8. cutting insert according to claim 7, wherein,
The part being positioned at the below of a pair straight line portion of described side is flat shape.
9. cutting insert according to claim 7, wherein,
The length of described a pair straight line portion is respectively than path length in described through hole.
10. a cutting element, possesses:
Knife rest, its front has edge cutter groove;
Cutting insert according to any one of claim 1 to 9, it is installed on described edge cutter groove with described main cutting edge from the mode that the front end of described knife rest is outstanding.
The manufacture method of 11. 1 kinds of machining things, comprising:
Make the operation being cut part rotation;
Make the described main cutting edge of cutting element according to claim 10 and the operation being cut part described in rotation and contacting;
Make described cutting element from the described operation being cut part and leaving.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2012190507 | 2012-08-30 | ||
| JP2012-190507 | 2012-08-30 | ||
| JP2012214392 | 2012-09-27 | ||
| JP2012-214392 | 2012-09-27 | ||
| PCT/JP2013/072759 WO2014034614A1 (en) | 2012-08-30 | 2013-08-26 | Cutting insert, cutting tool, and method for manufacturing cut product |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104582880A true CN104582880A (en) | 2015-04-29 |
| CN104582880B CN104582880B (en) | 2016-09-07 |
Family
ID=50183426
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380044416.7A Expired - Fee Related CN104582880B (en) | 2012-08-30 | 2013-08-26 | Cutting insert, cutting element and the manufacture method of machining thing |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP5841258B2 (en) |
| CN (1) | CN104582880B (en) |
| WO (1) | WO2014034614A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108858710A (en) * | 2017-05-16 | 2018-11-23 | 株式会社迪思科 | Cutting element |
| CN110636915A (en) * | 2017-05-15 | 2019-12-31 | 伊斯卡有限公司 | Cutting insert including a split cutting edge having leading and trailing component cutting edges |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10549352B1 (en) * | 2018-08-07 | 2020-02-04 | Kennametal Inc. | Indexable tangential cutting inserts and cutting tool holders |
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|---|---|---|---|---|
| US5167473A (en) * | 1991-06-24 | 1992-12-01 | Allied-Signal Inc. | Unidirectional insert lock |
| JP2000084705A (en) * | 1998-09-04 | 2000-03-28 | Mitsubishi Materials Corp | Throwaway tip |
| CN200977558Y (en) * | 2006-11-09 | 2007-11-21 | 张新添 | Disposable blade structure improvement |
| CN102131606A (en) * | 2008-08-31 | 2011-07-20 | 伊斯卡有限公司 | Cutting tool and round double sided cutting insert therefor |
| CN102548689A (en) * | 2009-10-15 | 2012-07-04 | 株式会社钨钛合金 | Cutting insert |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE454420B (en) * | 1984-05-14 | 1988-05-02 | Santrade Ltd | HAPPENS FOR LONG, SLIPPING OR COPYRUPTING |
| SE466689B (en) * | 1990-07-19 | 1992-03-23 | Sandvik Ab | CUTS FOR PROFILE AND SAVINGS WARNING |
| JPH10263916A (en) * | 1997-03-28 | 1998-10-06 | Mitsubishi Materials Corp | Throw-away tip |
-
2013
- 2013-08-26 CN CN201380044416.7A patent/CN104582880B/en not_active Expired - Fee Related
- 2013-08-26 WO PCT/JP2013/072759 patent/WO2014034614A1/en active Application Filing
- 2013-08-26 JP JP2014532998A patent/JP5841258B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5167473A (en) * | 1991-06-24 | 1992-12-01 | Allied-Signal Inc. | Unidirectional insert lock |
| JP2000084705A (en) * | 1998-09-04 | 2000-03-28 | Mitsubishi Materials Corp | Throwaway tip |
| CN200977558Y (en) * | 2006-11-09 | 2007-11-21 | 张新添 | Disposable blade structure improvement |
| CN102131606A (en) * | 2008-08-31 | 2011-07-20 | 伊斯卡有限公司 | Cutting tool and round double sided cutting insert therefor |
| CN102548689A (en) * | 2009-10-15 | 2012-07-04 | 株式会社钨钛合金 | Cutting insert |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110636915A (en) * | 2017-05-15 | 2019-12-31 | 伊斯卡有限公司 | Cutting insert including a split cutting edge having leading and trailing component cutting edges |
| CN108858710A (en) * | 2017-05-16 | 2018-11-23 | 株式会社迪思科 | Cutting element |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104582880B (en) | 2016-09-07 |
| JPWO2014034614A1 (en) | 2016-08-08 |
| JP5841258B2 (en) | 2016-01-13 |
| WO2014034614A1 (en) | 2014-03-06 |
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