CN2761321Y - Turning knife having edge smoothing blade - Google Patents
Turning knife having edge smoothing blade Download PDFInfo
- Publication number
- CN2761321Y CN2761321Y CN 200420069170 CN200420069170U CN2761321Y CN 2761321 Y CN2761321 Y CN 2761321Y CN 200420069170 CN200420069170 CN 200420069170 CN 200420069170 U CN200420069170 U CN 200420069170U CN 2761321 Y CN2761321 Y CN 2761321Y
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- Prior art keywords
- blade
- circular arc
- knife
- wiper edges
- basic
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- Expired - Lifetime
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Abstract
The utility model provides a turning knife blade which can further decrease the surface roughness of a turning workpiece in finish machining and semi-finish machining. The knife blade has a basic shape of a polygon and comprises an upper and a lower surfaces which are basically parallel with each other and at least three side faces, and a knife edge at the knifepoint part can be divided into at least five different segments which are formed by three sections of circular arcs which are separated by two straight line segments. Every adjacent segments are tangential pairwise, wherein smoothing edge circular arcs are positioned at both sides of a basic circular arc and are respectively tangential with straight knife edges at the corresponding sides. An included angle (alpha, alpha') between any straight line segment and the straight knife edge at the corresponding side is from 4 DGE 50 SEC to 5 DGE 8 SEC. A knifepoint curved face can be accordingly divided into at least five different cylinder faces which are composed of three small cylinder faces and two small planes. The basic circular arc, two straight lines and two smoothing blade circular arcs preferably are symmetry by a diagonal of the knife blade, and the included angle is preferably 5 DGE.
Description
Technical field
The present invention relates to a kind of turning insert, especially with the indexable turning tool sheet of wiper edges with wiper edges.
Background technology
In turning processing, the amount of feeding of product surface roughness and turning is the factor of a pair of mutual restriction.Generally speaking, surface roughness R
aWith amount of feeding f
nReduce and reduce, with corner radius γ
εIncrease or tool cutting edge angle Kr and reducing of auxiliary angle Kr ' and reduce.Therefore will guarantee that workpiece quality is that surface roughness is little, the amount of feeding that must reduce turning has promptly reduced production efficiency; Same reason if will guarantee production efficiency, is a cost with regard to the surface quality that is reduced workpiece; Increasing nose radius then can make Cutting Force increase.
Chinese invention patent application 95193136.9 (publication number CN1148829A, open day 1997,4,30) a kind of indexable tool that has five different radius segments in blade corner is disclosed, use this cutter to compare with the conventional cutter of constant nose radius, under identical cutting parameter situation, the surface roughness of part to be processed obviously reduces, and this patent application also discloses the span and the corresponding relation of different radii value and corresponding central angle.But the related indexable tool of patent application mainly is applicable to finish turning, and the surface to be machined roughness increases very fast when half finish turning.
The utility model content
The technical problem to be solved in the present invention provides a kind of turning insert that can further reduce the surface roughness of turner in fine finishining and the semifinishing.
Turning insert of the present utility model has polygonal basic configuration, comprise substantially parallel upper and lower two surfaces and at least three sides of between described upper and lower surface, extending, the formation blade is intersected in upper and lower two surfaces and side, transition portion between wantonly two adjacent sides forms the curved surface of point of a knife part, blade is made up of the blade of point of a knife part and the vertial knife edge of lateral parts, it is characterized in that: the blade of point of a knife part can divide for five different sections being made up of two sections straightways, three sections circular arcs at interval at least, and is tangent in twos between the adjacent sections; The wiper edges circular arc places basic circular arc both sides, and tangent with the vertial knife edge of respective side respectively; The angle of the vertial knife edge of arbitrary straightway and respective side (α, α ') be 4 ° 50 '-5 ° 8 '; The point of a knife curved surface correspondingly can divide for five different cylinders being made up of three roundlet cylinders and two facets at least.
Described basic circular arc, two straight lines and and two wiper edges circular arcs and respectively about blade diagonal symmetry.
Described angle is preferably 5 °.
Described basic arc radius is 0.2mm～4.0mm, is preferably 0.4mm～2.0mm, and central angle β is 86 °～96 °, is preferably 88 °～92 °; Straightway (4A, 4B) length is 0.1mm～0.4mm, is preferably 0.1mm～0.3mm; Wiper edges circular arc (5A, 5B) radius is 2mm～40mm, is preferably 4.0～20mm, and central angle γ (A), γ (B) are 3 °～7 °, preferably 4 °～6 °.
The blade of the utility model point of a knife part is designed to five different sections by three sections circular arcs and two sections rectilinear(-al)s, tangent in twos between five sections of point of a knife part blade, the wiper edges circular arc is tangent with vertial knife edge again, five different cylinders that the point of a knife curved surface correspondingly is made up of three roundlet cylinders and two facets, whole blade cut sword and point of a knife curved surface are smooth, help the reduction of cutting force in the turning processing; Blade with certain angle nose angle is by adjusting tool cutting edge angle Kr, and the parallel Kr ' with direction of feed of straightway blade 4A or 4B when making turning=0 ° plays good smoothing effect.The conventional turning insert of more constant nose radius, effect is remarkable, and the straightway blade is short and small, and Cutting Force is little; Than CN1148829A, straightway blade (4A) or (4B) more can reduce the R of machined surface near machined surface
aValue, thereby workpiece surface roughness when further having reduced finish turning, half finish turning.Simultaneously basic circular arc is about how much diagonal symmetries of blade, and transposition is symmetrical about blade, promptly forms indexable insert tip, throw away tip, simultaneous adaptation left and right side clamper.
Description of drawings
Below in conjunction with the drawings and specific embodiments the utility model is further described
Fig. 1 is the stereogram of a point of a knife part of the utility model turning insert;
Fig. 2 is the partial enlarged drawing of the vertical view of Fig. 1;
Fig. 3 is feed speed--the workpiece surface roughness relation curve comparison diagram when adopting the described turning insert of turning insert, CN1148829A of conventional constant nose radius and the utility model turning insert.
The specific embodiment
As shown in Figure 1, a point of a knife part of turning insert of the present utility model, this blade has polygonal basic configuration, comprise substantially parallel upper and lower two surfaces 1,1 ' and at least three sides 2,2 in upper and lower surperficial 1, a 1 ' extension ', upper and lower two surfaces 1,1 ' with side 2,2 ' intersect to form blade, transition portion between wantonly two adjacent sides forms the curved surface 7 of point of a knife part, and blade is made up of the blade of point of a knife part and the vertial knife edge 6 of lateral parts again.The blade of point of a knife part is designed to by three sections circular arcs 3 at two sections straight line 4A, 4B intervals, five different sections that 5A, 5B formed, and point of a knife curved surface 7 correspondingly is made up of five different cylinders that comprise above-mentioned different sections.
Angle α, the α ' of the vertial knife edge 6 of arbitrary straightway 4A or 4B and respective side be 4 ° 50 '-5 ° 8 ', preferably 5 °.
Basic circular arc 3, two straight line 4A, 4B and and two wiper edges circular arc 5A, 5B respectively about blade diagonal symmetry.
Basic circular arc 3 radiuses are 0.2mm～4.0mm, are preferably 0.4mm～2.0mm, and central angle β is 86 °～96 °, is preferably 88 °～92 °; Straightway 4A, 4B length are 0.1mm～0.4mm, 0.1mm～0.3mm preferably, and wiper edges circular arc 5A, 5B radius are 2.0mm～40mm, preferably 4.0mm～20mm.
The central angle γ (A) of wiper edges circular arc 5A, 5B, γ (B) equal and opposite in direction are 3 °～7 °, 4 °～6 ° of optimum ranges.
Basic circular arc 3, two straight line 4A, 4B and and two wiper edges circular arc 5A, 5B respectively about blade diagonal symmetry, that is separated time symmetric design in the angle of basic circular arc 3 further satisfies the indexable requirement of blade, and adapts to left and right clamper.
Turning insert profile of the present utility model is a polygon, can be rhombus or regular hexagon, or rectangle or triangle; The angle of carving of its point of a knife of this turning insert shown in Figure 1 part is roughly 80 °, but is that design has blade of the present utility model and point of a knife part curved surface on 80 ° the point of a knife part carving the angle not only, in 100 ° of points of a knife parts also design same structure is arranged.For guaranteeing machined surface roughness, the blade tool cutting edge angle is 95 ° during with the supporting use of knife bar, and promptly requiring supporting knife bar tool cutting edge angle also is 95; When carving the angle when being 100 °, then need and the supporting use of 75 ° of tool cutting edge angle lathe tool bars.
Turning insert upper and lower surface 1,1 of the present utility model ' can or not have the design of flute profile for double groove, single face groove recommends to use carbide alloy or all kinds of ceramic material, adopts direct compression molding or with the moulding for base product mill periphery.
The described turning insert of turning insert, CN1148829A with turning insert of the present utility model and conventional constant nose radius compares: three kinds of blade points of a knife are partly carved the angle and are 80 °, Material Processing is 45#, cutting-in Vc=1.0mm, cutting speed 220m/min, " feed speed f
n--workpiece surface roughness relation curve comparison diagram " see Fig. 3; Y-axis is the surface roughness R that unit representation obtains with μ m among the figure
a, axle X is with f
n(mm/r) be the unit representation feed speed.
The parameter of turning insert of the present utility model is:
Basic circular arc (3) radius=0.794mm, central angle β=90 °;
Wiper edges circular arc 5A, 5B radius=10mm, central angle γ (A), γ (B)=5 °;
Straightway 4A, 4B length=0.2mm.
As can be seen from Figure 3, the conventional turning insert of more constant nose radius, the utility model effect is remarkable, than CN1148829A, workpiece surface roughness when further having reduced finish turning, half finish turning.
Claims (5)
1, a kind of turning insert with wiper edges, this blade has polygonal basic configuration, comprise substantially parallel on, following two surfaces (1,1 ') and at least three on described, lower surface (1, the side (2 of extending 1 '), 2 '), on, following two surfaces (1,1 ') with side (2,2 ') intersect the formation blade, transition portion between wantonly two adjacent sides forms the curved surface (7) of point of a knife part, described blade is made up of the blade of point of a knife part and the vertial knife edge (6) of lateral parts, it is characterized in that: the blade of point of a knife part can divide at least by two sections straight line (4A, 4B) Jian Ge three sections circular arcs (3,5A, five different sections 5B) being formed, tangent in twos between the adjacent sections; Wiper edges circular arc (5A, 5B) places basic circular arc (3) both sides, and tangent with the vertial knife edge (6A, 6B) of respective side respectively; The angle (α, α ') of the vertial knife edge (6A, 6B) of arbitrary straightway (4A, 4B) and respective side be 4 ° 50 '～5 ° 8 '; Point of a knife curved surface (7) correspondingly can divide for five different cylinders being made up of three roundlet cylinders and two facets at least.
2, the turning insert of band wiper edges according to claim 1 is characterized in that: described angle (α, α ') is 5 °.
3, the turning insert of band wiper edges according to claim 1 and 2 is characterized in that: described basic circular arc (3), straight line (4A) and (4B) and wiper edges circular arc (5A) and (5B) respectively about blade diagonal symmetry.
4, the turning insert of band wiper edges according to claim 1 and 2 is characterized in that: basic circular arc (3) radius is 0.2mm-4.0mm, and central angle β is 86 °～96 °; Straightway (4A, 4B) length is 0.1mm～0.4mm, and wiper edges circular arc (5A, 5B) radius is 2mm～40mm, and central angle γ (A), γ (B) are 3 °～7 °.
5, the turning insert of band wiper edges according to claim 4 is characterized in that: basic circular arc (3) radius is 0.4mm～2.0mm, and central angle β is 88 °～92 °; Straightway (4A, 4B) length is 0.1mm～0.3mm, and wiper edges circular arc (5A, 5B) radius is 4.0mm～20mm, and central angle γ (A), γ (B) are 4 °～6 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069170 CN2761321Y (en) | 2004-11-09 | 2004-11-09 | Turning knife having edge smoothing blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420069170 CN2761321Y (en) | 2004-11-09 | 2004-11-09 | Turning knife having edge smoothing blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2761321Y true CN2761321Y (en) | 2006-03-01 |
Family
ID=36094457
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420069170 Expired - Lifetime CN2761321Y (en) | 2004-11-09 | 2004-11-09 | Turning knife having edge smoothing blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2761321Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043847A (en) * | 2013-03-12 | 2014-09-17 | 李旭淮 | Rough and fine blade for metal cutting |
| CN104308206A (en) * | 2014-10-21 | 2015-01-28 | 台州市锐安硬质合金工具有限公司 | Indexable cutter blade for turning |
| CN108115158A (en) * | 2016-11-29 | 2018-06-05 | 天津职业技术师范大学 | A kind of finishing lathe tool |
| US10378950B2 (en) * | 2016-08-29 | 2019-08-13 | National Institute Of Metrology | High accuracy measuring device for measuring large mass |
-
2004
- 2004-11-09 CN CN 200420069170 patent/CN2761321Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104043847A (en) * | 2013-03-12 | 2014-09-17 | 李旭淮 | Rough and fine blade for metal cutting |
| CN104308206A (en) * | 2014-10-21 | 2015-01-28 | 台州市锐安硬质合金工具有限公司 | Indexable cutter blade for turning |
| CN104308206B (en) * | 2014-10-21 | 2018-02-02 | 台州市锐安硬质合金工具有限公司 | Turning indexable insert tip, throw away tip |
| US10378950B2 (en) * | 2016-08-29 | 2019-08-13 | National Institute Of Metrology | High accuracy measuring device for measuring large mass |
| CN108115158A (en) * | 2016-11-29 | 2018-06-05 | 天津职业技术师范大学 | A kind of finishing lathe tool |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20141109 Granted publication date: 20060301 |