CN106346030B - A kind of bicircular arcs turning insert - Google Patents
A kind of bicircular arcs turning insert Download PDFInfo
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- CN106346030B CN106346030B CN201610978955.3A CN201610978955A CN106346030B CN 106346030 B CN106346030 B CN 106346030B CN 201610978955 A CN201610978955 A CN 201610978955A CN 106346030 B CN106346030 B CN 106346030B
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- cutting
- edge
- point
- knife
- turning insert
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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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/08—Rake or top surfaces
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2200/00—Details of cutting inserts
- B23B2200/28—Angles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
- Drilling Tools (AREA)
Abstract
A kind of bicircular arcs turning insert, belongs to turning cutting tool technical field.It is designed to provide the bicircular arcs turning insert that one kind can be improved processing efficiency and surface smoothness, and can prolong the service life.Any one vertex of the upper surface of cutter hub is provided with the embedded groove to match with point of a knife dummy slider, point of a knife dummy slider is closely embedded in the embedded groove of cutter hub, the side one and side two of turning insert are located at the two sides of cutting corner, and point of a knife dummy slider has point of a knife segment of cutting, and point of a knife segment of cutting is machined with negative chamfered edge；Cutting corner includes curved surface one, curved surface two, smoothing face and three cutting edges, three cutting edges are arranged at the lower edge of negative chamfered edge of point of a knife dummy slider, three cutting edges are linear cutting edge, arc edge one and arc edge two respectively, side one and curved surface one are tangent, curved surface one and curved surface three are tangent, curved surface three is connect with smoothing face by rounding off face, has angle between smoothing face and side two.The present invention is suitable for finishing processing.
Description
Technical field
The present invention relates to a kind of turning inserts, belong to turning cutting tool technical field.
Background technique
When wiper insert can pare off feed on machined surface left residual metal, reduce rough surface
Degree.Wiper edges must be ground straight bright and clean, when installation, it should be noted that with direction of feed keeping parallelism.Wiper edges cannot be excessive, excessive
The radial-thrust force that will increase cutting easily causes vibration.And only when process systems such as workpiece, cutter, fixture and lathes
When rigidity is preferable, better effects can be just got using wiper edges.The length of wiper edges is usually 1.2~1.5 times of the amount of feeding,
Wiper insert uses twice bigger than standard insert of feed rate, remains to obtain identical processed surface smoothness.Wiper edges
Advantage is " process time halves, surface quality multiplication ".
Wiper edges are the extreme forms of end cutting edge between main cutting edge and end cutting edge, and knife can be improved in wiper edges
The impact resistance of point, and improve processing efficiency.Common wiper edges have linear and two kinds arc-shaped.Arc-shaped wiper edges,
Its radius of curvature is bigger, and the finish and tool life of finished surface are higher, but also will increase grinding force, is also easy to produce vibration,
Processing efficiency is reduced, cutter is used for a long time and is easily damaged, influences cutting-tool's used life.
Summary of the invention
The purpose of the present invention is to provide one kind can be improved processing efficiency and surface smoothness, and can prolong the service life
Bicircular arcs turning insert.
Realize above-mentioned purpose, the technical solution adopted by the present invention is as follows：
A kind of bicircular arcs turning insert, the turning insert are made of cutter hub and point of a knife dummy slider two parts, the middle part of the cutter hub
Equipped with knife bar mounting hole, the horizontal cross sectional geometry of cutter hub is polygon, any one vertex of the upper surface of cutter hub is provided with
The embedded groove to match with point of a knife dummy slider, the point of a knife dummy slider are closely embedded in the embedded groove of cutter hub, the turning insert
Side includes side one, side two and cutting corner, and the side one and side two are located at the two sides of cutting corner, described
Point of a knife dummy slider has point of a knife segment of cutting, and the point of a knife segment of cutting is machined with negative chamfered edge；
The cutting corner includes curved surface one, curved surface two, smoothing face and three cutting edges, and three cutting edges are set
It sets at the lower edge of the negative chamfered edge of point of a knife dummy slider, three cutting edges are linear cutting edge, arc edge one and circular arc respectively
Cutting edge two, the radius of curvature of the arc edge one are greater than the radius of curvature of arc edge two, the side one
Tangent with curved surface one, the curved surface one and curved surface two is tangent, and the curved surface two is connect with smoothing face by rounding off face,
There is angle, curved surface one is corresponding with arc edge two, and curved surface two and circular arc are cut between the smoothing face and side two
Sword one is corresponding, and smoothing face is corresponding with linear cutting edge；
The point intersected between the arc edge one and arc edge two is highest point, the arc edge two
Intersect with the center line of cutting corner, and the asymmetric center line in cutting corner of arc edge two is arranged, the highest
The approximate centerline of cutting corner is arranged in point；
The radius of curvature of the arc edge one is 6~10 times of the radius of curvature of arc edge two, and circular arc is cut
The center of circle and the highest point for cutting the radius of curvature of sword one and arc edge two are on same straight line.
The beneficial effect of the present invention compared with the existing technology is：
Bicircular arcs turning insert of the invention improves processing efficiency, reduces remained on surface with that can increase cutting width
Height value and the characteristics of increasing tool life, bicircular arcs turning insert of the invention and conventional turning insert are joined in identical cutting
Under said conditions, the present invention can be improved 3 times of processing efficiency or so, and remained on surface height value reduces by 3 times or so.The present invention is suitable for essence
Vehicle Processing, and it is suitable for the harder material of finishing processing, such as hardened bearing steel, high temperature alloy.
Detailed description of the invention
Fig. 1 is the perspective view of bicircular arcs turning insert of the invention；
Fig. 2 is the partial top view of bicircular arcs turning insert point of a knife of the invention；
The top view of bicircular arcs turning insert and workpiece relative position when Fig. 3 is cylindrical turning hardened bearing steel；
Fig. 4 is the top view for 80 ° of diamond shaped inserts processing bearing steel that corner radius is 0.8mm；W1 is tool arc
Radius is the cutting width of 80 ° of diamond shaped inserts of standard of 0.8mm；
Fig. 5 is the top view that bicircular arcs turning insert 8 of the invention processes bearing steel, and W2 is bicircular arcs turning insert of the invention
8 cutting width.
Wherein, linear cutting edge 1, arc edge 1, arc edge 23, point of a knife dummy slider 4, knife bar mounting hole 5, knife
6,80 ° of diamond shaped inserts 7 of body, bicircular arcs turning insert 8, one I of side, one II of curved surface, two III of curved surface, smoothing face IV, two V of side, on
Surface VI, lower surface VII, negative chamfered edge VIII, cutting corner M..
Specific embodiment
Specific embodiment one：As depicted in figs. 1 and 2, a kind of bicircular arcs turning insert, the turning insert is by cutter hub 6 and point of a knife
4 two parts of dummy slider composition, the middle part of the cutter hub 6 are equipped with knife bar mounting hole 5, and the horizontal cross sectional geometry of cutter hub 6 is polygon,
Any one vertex of the upper surface VI of cutter hub 6 is provided with the embedded groove to match with point of a knife dummy slider 4, the point of a knife dummy slider
In the embedded groove of 4 close insertion cutter hubs 6, the side of the turning insert includes one I of side, side two V and cutting corner M, institute
One I of side and two V of side that state are located at the two sides of cutting corner M, and the point of a knife dummy slider 4 has point of a knife segment of cutting, described
Point of a knife segment of cutting is machined with negative chamfered edge VIII；
The cutting corner M includes one II of curved surface, two III of curved surface, smoothing face IV and three cutting edges, and described three
Cutting edge is arranged at the lower edge of negative chamfered edge VIII of point of a knife dummy slider 4, and three cutting edges are linear cutting edge 1 respectively（It is grown
Degree is related with the amount of feeding, plays a part of to wipe machined surface）, arc edge 1 and arc edge 23, the circle
Arc cutting edge 1（For anti-dandruff sword）Radius of curvature be greater than arc edge 23（Arc edge 23 is transitional edges, is not involved in
Cutting, but point of a knife intensity can be enhanced）Radius of curvature, one I of side and one II of curved surface are tangent, one II of curved surface and
Two III of curved surface is tangent, and two III of curved surface is connect with smoothing face IV by rounding off face, the smoothing face IV and side
There is angle, one II of curved surface is corresponding with arc edge 23, and two III of curved surface and arc edge 1 are opposite between two V of face
It answers, smoothing face IV is corresponding with linear cutting edge 1.
As shown in Figure 1, the upper surface VI of cutter hub 6 setting parallel with lower surface VII；Linear cutting edge 1 is in machining
In with direction of feed keeping parallelism.
For the ease of installing knife bar, chamfered edge is designed at the lower edges of knife bar mounting hole 5.
Specific embodiment two：As depicted in figs. 1 and 2, a kind of bicircular arcs turning insert, institute described in specific embodiment one
Stating the point intersected between arc edge 1 and arc edge 23 is highest point, the arc edge 23 and cutting
The center line G of corner M intersects, and the asymmetric center line in cutting corner M of arc edge 23 is arranged, the highest point
The approximate centerline of cutting corner M is set（Point on two arc edges is no more than highest point）.
Specific embodiment three：As shown in Figure 1, a kind of bicircular arcs turning insert described in specific embodiment one, described
Negative chamfered edge VIII width value range is 0.15-0.24mm, and negative chamfered edge VIII angular configurations range is -5 °~-25 °.Effect is：
Chamfered edge width and chamfered edge angular configurations are excessive, will lead to the vibration that the cutting force generated in cutting process is excessive, generates in processing
Also it will increase, influence machined surface quality, chamfered edge width and chamfered edge angular configurations are too small, then chamfered edge role is unobvious.
Specific embodiment four：As shown in Figure 1, a kind of bicircular arcs turning insert described in specific embodiment one, described
Turning insert is with a thickness of 4.76mm（Standard parameter）, point of a knife dummy slider 4 with a thickness of the 1/3~1/4 of turning insert thickness（In order to enhance knife
The intensity of sharp dummy slider 4）.
Specific embodiment five：As depicted in figs. 1 and 2, the double circles of one kind described in specific embodiment one, two, three or four
Arc turning insert, the length range of the linear cutting edge 1 are 0.36~0.45mm.
Specific embodiment six：As depicted in figs. 1 and 2, a kind of bicircular arcs turning insert, institute described in specific embodiment two
The radius of curvature for the arc edge 1 stated is 6~10 times of the radius of curvature of arc edge 23（It is to increase cutting
Width）, the center of circle of the radius of curvature of arc edge 1 and arc edge 23 and the highest point are in same straight line
On（It is, i.e. rounding off tangent in order to guarantee arc edge 1 and arc edge 23）.
Specific embodiment seven：As shown in Figure 1, a kind of bicircular arcs turning insert described in specific embodiment one, described
Angle between two V of smoothing face IV and side is 175 °.
Specific embodiment eight：As shown in Figure 1, a kind of bicircular arcs turning insert described in specific embodiment one, described
Turning insert is made of any one material in cubic boron nitride material, diamond, ceramics, cemented carbide material；Or it is described
Cutter hub 6 be made of cemented carbide material, the point of a knife dummy slider 4 is made of cubic boron nitride material.
Embodiment 1：As depicted in figs. 1 and 2, when carrying out finishing processing, the maximum amount of feeding is 0.3mm/r, therefore the present embodiment
1 length of linear cutting edge be selected as 0.4mm, linear cutting edge 1 plays a part of to wipe machined surface in cutting.Carry out turning
When, guarantee linear cutting edge 1 as far as possible is parallel with machined surface, just can guarantee that linear cutting edge 1 works.Arc edge one
2 participate in cutting as anti-dandruff sword, and radius of curvature is larger, and cutting width is larger, and processing efficiency is higher.Arc edge 23 is made
It is not involved in cutting for transitional edges, serves and strengthens cutting edge strength, form of straight lines can also be used in arc edge 23.
Embodiment 2：As depicted in figs. 1 and 2, a kind of bicircular arcs turning insert, the length of the linear cutting edge 1 in the present embodiment
For 0.4mm, the radius of curvature of arc edge 1 is 3.8mm, and the radius of curvature of arc edge 23 is 0.5mm, knife bar peace
The diameter for filling hole 5 is 5.16mm, and the chamfered edge of knife bar mounting hole 5 is 0.2x45 °, and the chamfered edge width of turning insert is 0.2mm, chamfer angle
Degree is -25 °.
Embodiment 3：The bicircular arcs turning insert of a kind of bicircular arcs turning insert, the present embodiment uses 80 ° of diamond structures, such as Fig. 5
It is shown.Fig. 4 is the top view for 80 ° of diamond shaped inserts processing bearing steel that corner radius is 0.8mm.Knife used in two kinds of turning inserts
Rod-type number is DCLNR 2525M12, and installation tool cutting edge angle is 95 °, and auxiliary angle is 5 °.It can be obvious from Fig. 4 and Fig. 5
Find out in primary feed, bicircular arcs turning insert cutting width W2 of the invention is significantly greater than 80 ° of diamond shape knives of corner radius
The cutting width W1, bicircular arcs turning insert cutting width W2 of the invention of piece are 3 times of left sides of 80 ° of diamond shaped insert cutting width W1
The right side, under identical surface quality requirements, processing efficiency is 3 times of 80 ° of diamond shaped inserts or so.Compared to 80 ° diamond shapes of the present invention
Blade, have lesser tool cutting edge angle, machined surface revolution mark height is smaller, and roughness value is lower, machined surface quality compared with
It is good.Meanwhile point of a knife intensity can be improved in lesser tool cutting edge angle, perfect heat-dissipating reduces thermal damage.
Bicircular arcs turning insert of the invention has negative chamfered edge, and negative chamfered edge includes two parameters：Chamfered edge width and chamfered edge angle.
Chamfered edge width is related with the amount of feeding, when chamfered edge width is greater than the amount of feeding, will form the helical chip for being unfavorable for cutting, this to cut
Bits are easily wrapped on cutter, workpiece or lathe, it is necessary to shut down cleaning, this processing efficiency, safety, workpiece surface quality are all
It is bad.Chamfered edge width should be less than the amount of feeding, just will form the C-shaped chip for being conducive to cutting.When finishing, the amount of feeding is no more than
0.3mm/r, therefore chamfered edge width should not exceed the amount of feeding, value range 0.15-0.24mm, chamfered edge angle value range is-
5 °~-25 °, turning insert with a thickness of 4.76 ± 0.013mm, the thickness of point of a knife dummy slider 4 should be turning insert thickness 1/3~1/4, with
Guarantee the intensity of point of a knife dummy slider 4.
In Fig. 3, a is the center line of bearing, and ap is cutting depth, and f is direction of feed, and bp is cutting width.Actual processing
In, cylindrical hardened bearing steel is on the scroll chuck of lathe, and the center line a around bearing rotates counterclockwise, turning insert edge
Direction of feed f is mobile, and main cutting edge forms an angle with direction of feed, which is tool cutting edge angle Kr.End cutting edge and feeding
Angle between opposite direction is auxiliary angle Kr'.
Knife bar used in bicircular arcs turning insert of the invention be standard diamond shape knife bar DCLNR 2525M12, tool cutting edge angle Kr=
95 °, 5 ° of auxiliary angle Kr'=.
Claims (6)
1. a kind of bicircular arcs turning insert, the turning insert is by cutter hub（6）With point of a knife dummy slider（4）Two parts composition, the cutter hub（6）
Middle part be equipped with knife bar mounting hole（5）, cutter hub（6）Horizontal cross sectional geometry be polygon, cutter hub（6）Upper surface（VI）Appoint
Vertex of anticipating is provided with and point of a knife dummy slider（4）The embedded groove to match, the point of a knife dummy slider（4）Close insertion cutter hub
（6）Embedded groove in, the side of the turning insert includes side one（I）, side two（V）And cutting corner（M）, the side
Face one（I）And side two（V）Positioned at cutting corner（M）Two sides, the point of a knife dummy slider（4）It is described with point of a knife segment of cutting
Point of a knife segment of cutting be machined with negative chamfered edge（VIII）；It is characterized in that：
The cutting corner（M）Including curved surface one（II）, curved surface two（III）, smoothing face（IV）And three cutting edges, it is described
Three cutting edges are arranged in point of a knife dummy slider（4）Negative chamfered edge（VIII）Lower edge at, three cutting edges are linear interpolation respectively
Sword（1）, arc edge one（2）With arc edge two（3）, the arc edge one（2）Radius of curvature be greater than circle
Arc cutting edge two（3）Radius of curvature, the side one（I）With curved surface one（II）Tangent, described curved surface one（II）And song
Face two（III）Tangent, described curved surface two（III）With smoothing face（IV）It is connected by rounding off face, the smoothing face
（IV）With side two（V）Between have angle, curved surface one（II）With arc edge two（3）It is corresponding, curved surface two（III）With circle
Arc cutting edge one（2）It is corresponding, smoothing face（IV）With linear cutting edge（1）It is corresponding；
The arc edge one（2）With arc edge two（3）Between the point that intersects be highest point, the arc edge
Two（3）With cutting corner（M）Center line intersection, and arc edge two（3）It is asymmetric in cutting corner（M）Center line
（G）Setting, the highest point are arranged in cutting corner（M）Approximate centerline；
The arc edge one（2）Radius of curvature be arc edge two（3）6~10 times of radius of curvature, circular arc
Cutting edge one（2）With arc edge two（3）Radius of curvature the center of circle and the highest point on same straight line.
2. a kind of bicircular arcs turning insert according to claim 1, it is characterised in that：The negative chamfered edge（VIII）Width takes
Value range is 0.15-0.24mm, negative chamfered edge（VIII）Angular configurations range is -5 °~-25 °.
3. a kind of bicircular arcs turning insert according to claim 1, it is characterised in that：The turning insert with a thickness of
4.76mm, point of a knife dummy slider（4）With a thickness of the 1/3~1/4 of turning insert thickness.
4. a kind of bicircular arcs turning insert according to claim 1,2 or 3, it is characterised in that：The linear cutting edge（1）
Length range be 0.36~0.45mm.
5. a kind of bicircular arcs turning insert according to claim 1, it is characterised in that：The smoothing face（IV）With side two
（V）Between angle be 175 °.
6. a kind of bicircular arcs turning insert according to claim 1, it is characterised in that：The turning insert is by cubic boron nitride
Material, diamond, ceramics, any one material in cemented carbide material are made；Or the cutter hub（6）By hard alloy
Material is made, the point of a knife dummy slider（4）It is made of cubic boron nitride material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610978955.3A CN106346030B (en) | 2016-11-08 | 2016-11-08 | A kind of bicircular arcs turning insert |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610978955.3A CN106346030B (en) | 2016-11-08 | 2016-11-08 | A kind of bicircular arcs turning insert |
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| Publication Number | Publication Date |
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| CN106346030A CN106346030A (en) | 2017-01-25 |
| CN106346030B true CN106346030B (en) | 2018-11-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610978955.3A Active CN106346030B (en) | 2016-11-08 | 2016-11-08 | A kind of bicircular arcs turning insert |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112018003961T5 (en) * | 2017-08-02 | 2020-05-07 | Kyocera Corporation | CUTTING INSERT, CUTTING TOOL AND METHOD FOR PRODUCING A MACHINED PRODUCT |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE501913C2 (en) * | 1993-10-21 | 1995-06-19 | Sandvik Ab | Cutter for cutting tools |
| SE529150C2 (en) * | 2005-02-22 | 2007-05-15 | Seco Tools Ab | Metal cutting insert for turning operations has nose cutting edge having smaller chamfer angle in cross-section than chamfer angle in cross-section away from nose cutting edge |
| SE530153C2 (en) * | 2005-02-22 | 2008-03-11 | Seco Tools Ab | Cut for turning with a peripheral land of constant width |
| CN201889455U (en) * | 2010-11-17 | 2011-07-06 | 郑州市钻石精密制造有限公司 | Double-end smoothed-edge blade for processing external diameter of air condition compressor |
| US20120282048A1 (en) * | 2011-05-03 | 2012-11-08 | Diamond Innovations, Inc. | Insert With A Wiper To Induce Chip Thinning On A Leading Edge |
| CN103846486B (en) * | 2012-11-28 | 2017-12-26 | 株洲钻石切削刀具股份有限公司 | A kind of indexable insert tip, throw away tip with chamfer structure |
| DE102013107629A1 (en) * | 2013-04-12 | 2014-10-16 | Gühring KG | Cutting insert, cutting tool and method for cutting adjustment |
| CN204381442U (en) * | 2014-12-14 | 2015-06-10 | 郑州博特硬质材料有限公司 | A kind of wiper insert |
| CN204321222U (en) * | 2014-12-19 | 2015-05-13 | 北京电子科技职业学院 | A kind of sintex with negative chamfer structure |
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2016
- 2016-11-08 CN CN201610978955.3A patent/CN106346030B/en active Active
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