CN106624100B - A kind of milling cutter - Google Patents
A kind of milling cutter Download PDFInfo
- Publication number
- CN106624100B CN106624100B CN201611176520.3A CN201611176520A CN106624100B CN 106624100 B CN106624100 B CN 106624100B CN 201611176520 A CN201611176520 A CN 201611176520A CN 106624100 B CN106624100 B CN 106624100B
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- CN
- China
- Prior art keywords
- face
- cutting
- cutter
- indexable
- cutter groove
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/16—Milling-cutters characterised by physical features other than shape
- B23C5/20—Milling-cutters characterised by physical features other than shape with removable cutter bits or teeth or cutting inserts
- B23C5/22—Securing arrangements for bits or teeth or cutting inserts
- B23C5/2204—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert
- B23C5/2208—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts
- B23C5/2213—Securing arrangements for bits or teeth or cutting inserts with cutting inserts clamped against the walls of the recess in the cutter body by a clamping member acting upon the wall of a hole in the insert for plate-like cutting inserts having a special shape
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/04—Overall shape
- B23C2200/0477—Triangular
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2200/00—Details of milling cutting inserts
- B23C2200/08—Rake or top surfaces
- B23C2200/086—Rake or top surfaces with one or more grooves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/04—Angles
- B23C2210/0407—Cutting angles
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C2210/00—Details of milling cutters
- B23C2210/16—Fixation of inserts or cutting bits in the tool
- B23C2210/165—Fixation bolts
Abstract
The invention discloses a kind of milling cutters, include the cutter hub with axis of rotation and at least one Indexable cutting inserts, the Indexable cutting inserts are corresponded on the cutter hub is equipped with cutter groove, the Indexable cutting inserts are fixed on by fastener in the cutter groove, the Indexable cutting inserts are triangle body shape, the indexable insert tip, throw away tip includes upper surface, three sides, lower face and at least one clearance face, in three sides at least there are two side be indent side, the clearance face is crossed to form cutting edge between the upper surface and the indent side and with the indent side, the height of the cutting edge is less than the height of upper surface, angle α between the indent side and lower face is acute angle, the cutter groove includes the cutter groove bottom surface to offset with the lower face and the cutter groove side that offsets with the indent side.The present invention has the advantages that positioning stablity, can reduce blade fastener torque, blade fastener is avoided to be broken.
Description
Technical field
The present invention relates to metal cutting technology field more particularly to a kind of milling cutters.
Background technology
In milling cutter capable of indexing field, the blade of vertical assembling structure has been widely used.Vertical dress blade advantage
It is：On the cutter of equivalent diameter, vertical dress blade can arrange more numbers of teeth, to improve processing efficiency.Exist simultaneously
Cut on force direction, relative to paperback blade, found dress blade structure size bigger, the cutting force of bigger can be resisted and will not knife
Piece is broken.Cost is reduced in order to provide more cutting edge quantity simultaneously, the vertical dress blade of basic quadrangularly shape obtains
It is widely applied.
In order to realize that the use function of cutter, blade need to tilt certain angle on cutter to avoid interference with, the angle
Degree is commonly referred to as relief angle, and due to the design feature of vertical dress blade, relief angle needs some larger.With subtracting for cutter diameter
Small, relief angle needs are increasing, and torque caused by the cutting force that blade is subject to therewith is also increasing, and above-mentioned torque needs to use
It is balanced in the screw of fixed blade, therefore screw can have the risk being broken due to undertaking excessive power.
Fig. 1 and the cutting tool shown in Fig. 2 assembled include cutting cutter hub 91, the milling cutting insert 92 and use of quadrangularly
In the fixing screws 3 being fixed on milling cutting insert 92 on cutting cutter hub 91.Shown in milling cutting insert 92 be present extensive use
Vertical dress milling cutting insert, basic quadrangularly shape includes for multiple cutting edges 910 of machining and used for positioning
Cut side-locating face 911 and cutting positioning bottom surface 912, shown in milling cutting insert 92 surround cutting cutter hub 91 in use
Axis rotates, to complete machining function.
Fig. 2 is the section A-A detail drawing in Fig. 1, describes the state of milling cutting insert 92 at work.As shown in Fig. 2, milling
Blade 92 is fixed on by fixing screws 3 on cutting cutter hub 91, and cutting positioning side 911 and cutting position bottom surface 912 and cutting
Cutter hub 91 is in contact to complete the accurate positionin of milling cutting insert 92, while cutting force is passed to cutting cutter hub 91.At work,
Milling cutting insert 92 does counter-clockwise rotary motion around cutting 91 axis of cutter hub, and locus circle Q shown in Fig. 2 is milling cutting insert 92
Cutting edge 910 around cutting 91 rotary motion of cutter hub track.For convenience of description, cutting edge 910 and milling cutter are connected
Datum line M is drawn at 92 center of piece, is crossed cutting edge 910 and is drawn datum line P perpendicular to datum line M.At work, insert end faces 94
It needs to prevent insert end faces 94 from interfering machined surface within locus circle Q, therefore, milling cutting insert 92 is needed in cutting cutter hub 91
The certain angle of middle inclination describes the size of blade tilt degree with angle N in fig. 2.
In fig. 2, at work, the main cutting force being subject to acts on cutting edge 910 milling cutting insert 92, direction
It is downward along datum line P, and the face that milling cutting insert 92 mainly undertakes cutting force is cutting positioning side 911.Therefore, cutting force pair
Blade causes a clockwise torque, and the torque needs the pulling force generated to blade by trip bolt 3 to balance.Scheming
In 2, as cutter diameter is smaller and smaller, the diameter of locus circle Q also tapers into, and angle N needs constantly to increase to avoid blade
Interfere machined surface in end face 94.Since the fulcrum of milling cutting insert 92 is always cutting positioning side, with the increase of angle N, cutting
Power is consequently increased the arm of force of blade, and therefore, the torque that blade is subject to gradually increases, and the power that trip bolt 3 is subject to is also gradual
Increase, finally, trip bolt 3 is damaged since stress is excessive.
Invention content
The technical problem to be solved by the present invention is to overcome the deficiencies in the prior art, a kind of positioning stablity is provided, knife can be reduced
Piece fastener torque, the milling cutter for avoiding blade fastener from being broken.
In order to solve the above technical problems, the present invention uses following technical scheme：
A kind of milling cutter includes the cutter hub with axis of rotation and at least one Indexable cutting inserts, the cutter hub
The upper correspondence Indexable cutting inserts are equipped with cutter groove, and the Indexable cutting inserts are fixed on the cutter groove by fastener
Interior, the Indexable cutting inserts are triangle body shape, and the indexable insert tip, throw away tip includes upper surface, three sides, lower face and extremely
Lack a clearance face, is at least indent side there are two side in three sides, the clearance face is located at the upper surface
It is crossed to form cutting edge between the indent side and with the indent side, the height of the cutting edge is less than upper surface
Highly, the angle α between the indent side and lower face is acute angle, and the cutter groove includes the cutter groove to offset with the lower face
Bottom surface and the cutter groove side to offset with the indent side.
As a further improvement of the above technical scheme：
The indent side is made of side-locating face and cutting rake face, and the side-locating face and cutting rake face are smoothed
It crosses and angle β between the two is obtuse angle.
Angle β preferred scopes between the side-locating face and cutting rake face are 140 °~170 °.
The clearance face is crossed to form the cutting edge with the cutting rake face.
Three sides are indent side, and the clearance face is set as three, and the cutting edge corresponds to three.
It is equipped with corner plane between two indent sides, is crossed to form between the corner plane, two of which clearance face three
Point of a knife fillet.
The cutter hub is equipped at least one chip pocket, the chip pocket quantity and the Indexable cutting inserts quantity phase
Together, the cutter groove is located in the chip pocket.
The fastener is trip bolt.Compared with the prior art, the advantages of the present invention are as follows：
The milling cutter of the present invention, cutting tip at triangle body structure, are cut substantially by the way that blade side-locating face to be distributed in
Sword both sides are cut, reduce cutting force torque caused by blade, while coordinating by the cutter groove of indent side and oat tail groove structure,
The torque that blade is subject to is passed into cutter hub, effectively reduces the power that blade fastener is subject to, reduces blade fastener fracture
Risk.
Description of the drawings
Fig. 1 is the structural schematic diagram of milling cutter in the prior art.
Fig. 2 is the A-A views of Fig. 1.
Fig. 3 is the dimensional structure diagram of milling cutter of the present invention.
Fig. 4 is the decomposition diagram of milling cutter of the present invention.
Fig. 5 is the dimensional structure diagram of Indexable cutting inserts in the present invention.
Fig. 6 is Indexable cutting inserts main structure diagram in the present invention.
Fig. 7 is the B-B views of Fig. 6.
Fig. 8 is the main structure diagram of milling cutter of the present invention.
Fig. 9 is the C-C views of Fig. 8.
Figure 10 is the D-D views of Fig. 8.
Each label indicates in figure：
1, cutter hub；13, upper surface；14, lower face；15, clearance face；18, cutting edge；2, blade；20, indent side；
201, side-locating face；202, rake face is cut；21, corner plane；23, point of a knife fillet；24, cutter groove bottom surface；25, cutter groove side；3,
Fastener；4, cutter groove；5, chip pocket；91, cutter hub is cut；910, cutting edge；911, cutting positioning side；912, cutting positioning
Bottom surface；92, milling cutting insert；94, insert end faces.
Specific implementation mode
Below in conjunction with Figure of description and specific embodiment, invention is further described in detail.
Fig. 3 to Figure 10 shows that a kind of embodiment of milling cutter of the present invention, the milling cutter include having axis of rotation
Cutter hub 1 and at least one Indexable cutting inserts 2, Indexable cutting inserts 2 are corresponded on cutter hub 1 and are equipped with cutter groove 4, it is indexable to cut
Paring blade 2 is fixed on by fastener 3 in cutter groove 4, and Indexable cutting inserts 2 are triangle body shape, and indexable insert tip, throw away tip 2 includes upper end
13, three, face side, lower face 14 and at least one clearance face 15 there are two side are at least indent side in three sides
20, clearance face 15 is crossed to form cutting edge 18, cutting edge between upper surface 13 and indent side 20 and with indent side 20
18 height is less than the height of upper surface 13, and angle α between indent side 20 and lower face 14 is acute angle, cutter groove 4 include with
The cutter groove bottom surface 24 that lower face 14 offsets and the cutter groove side 25 to offset with indent side 20.
In concrete application example, indent side 20 can be two either three clearance faces 15 can be 1 or two
It is a or three.In the present embodiment, indent side 20 is three, and clearance face 15 is set as three, and cutting edge 18 corresponds to three.
In the present embodiment, indent side 20 by side-locating face 201 and cutting rake face 202 constitute, side-locating face 201 with cut
Cut rake face 202 seamlessly transit and angle β between the two be obtuse angle.Clearance face 15 is crossed to form with cutting rake face 202 and cuts
Cut sword 18.
Angle β preferred scopes between side-locating face 201 and cutting rake face 202 are 140 °~170 °, in the present embodiment,
Angle β is any value within the scope of this.
In the present embodiment, corner plane 21, corner plane 21, two of which clearance face 15 3 are equipped between two indent sides 20
Point of a knife fillet 23 is crossed to form between person.Indent side 20 is connected with corner plane 21, and common envelope goes out blade type body（Such as Fig. 5
It is shown）.The face that clearance face 15 and upper surface 13 are constituted relative to blade at convex, as shown in Figure 7.
Cutter hub 1 is equipped at least one chip pocket 5, and 5 quantity of chip pocket is identical as 2 quantity of Indexable cutting inserts, cutter groove 4
In chip pocket 5.In the present embodiment, for three Indexable cutting inserts 2 are set on cutter hub 1.Indexable cutting inserts 2
The axis of rotation that cutter hub 1 can be surrounded rotates.
As shown in figure 9, the cutter groove bottom surface 24 of cutter groove 4 and two cutter groove sides 25 form a similar swallow at an acute angle
The structure of stern notch, the lower face 14 of Indexable cutting inserts 2 are bonded with the cutter groove bottom surface 24 of cutter groove 4, and two side-locating faces 201 divide
It does not fit on both sides and cutter groove side 25, is accurately pressed in cutter groove 4 by consolidating blade 2 with fastener 3.This reality
It applies in example, fastener 3 is trip bolt.3 head of trip bolt is usually tapered configuration, by being supplied to Indexable cutting inserts
2 one power perpendicular to section C-C makes to generate certain pressure between blade side-locating face 201 and cutter groove side 25, thus by knife
What piece accurately consolidated is pressed on cutter hub 1.
The resultant force that two cutter groove sides 25 form Indexable cutting inserts 2 is parallel to fixing screws 3, assumes responsibility for major part
Cutting force acts on the torque of blade, therefore the power that trip bolt 3 is subject to is than the milling cutter with quadrangle blade in background technology
The cutting force that is subject to of screw it is smaller, reduce the risk of screw extraction.Specifically, in the present invention, the work of trip bolt 3
With mainly Indexable cutting inserts 2 are fixed on cutter hub 1, and effect of the cutting force to Indexable cutting inserts 2, mainly by
Two cutter groove sides 25 undertake.Therefore, the risk that trip bolt 3 is broken is greatly diminished.
In Figure 10, the locus circle S of dotted line indicates that cutting edge 18 surrounds the axis turning anticlockwise working trajectory of cutter hub 1.
To avoid interference with, 2 upper surface 13 of Indexable cutting inserts needs within locus circle S, and therefore, Indexable cutting inserts 2 need
It is tilted a certain angle, blade tilt degree is described with angle K in fig.9.For convenience of description, cutting edge 18 and cutter hub 1 are crossed
The centre of gyration draws datum line E, and vertical reference line E draws datum line F by cutting edge 18.When 1 diameter of cutter hub is smaller, it is
Avoid Indexable cutting inserts 2 that machined surface, Indexable cutting inserts 2 is interfered to need to tilt a bigger angle, angle K will
Increase.At this point, the main cutting force that Indexable cutting inserts 2 are subject to acts on cutting edge 18 clockwise along the directions datum line F,
One clockwise torque is caused to Indexable cutting inserts 2.At this point, the main stress surface of Indexable cutting inserts 2 is
Side-locating face 201.Since Indexable cutting inserts 2 are at triangle body shape structure, side-locating face 201 is distributed in 18 liang of cutting edge
Side, it is opposite with the quadrangle blade in background technology, side-locating face 201 apart from cutting edge 18 apart from smaller, therefore, cutting force
The arm of force it is smaller, the clockwise torque that Indexable cutting inserts 2 are subject to respect to the background art in quadrangle blade
The torque being subject under the cutting force of same size is smaller, so that the power that trip bolt 3 is subject to is also smaller.
Although the present invention has been disclosed as a preferred embodiment, however, it is not intended to limit the invention.It is any to be familiar with ability
The technical staff in domain, without deviating from the scope of the technical scheme of the present invention, all using the technology contents pair of the disclosure above
Technical solution of the present invention makes many possible changes and modifications, or is revised as the equivalent embodiment of equivalent variations.Therefore, every
Without departing from the content of technical solution of the present invention, according to the present invention technical spirit any simple modification made to the above embodiment,
Equivalent variations and modification, all shall fall within the protection scope of the technical scheme of the invention.
Claims (6)
1. a kind of milling cutter includes the cutter hub with axis of rotation（1）With at least one Indexable cutting inserts（2）, described
Cutter hub（1）The upper correspondence Indexable cutting inserts（2）Equipped with cutter groove（4）, the Indexable cutting inserts（2）Pass through fastener
（3）It is fixed on the cutter groove（4）It is interior, it is characterised in that：The Indexable cutting inserts（2）It is described indexable for triangle body shape
Blade（2）Including upper surface（13）, three side, lower faces（14）With at least one clearance face（15）, in three sides
It is at least indent side there are two side（20）, the indent side（20）By side-locating face（201）With cutting rake face（202）
It constitutes, the side-locating face（201）With cutting rake face（202）It seamlessly transits and angle β between the two is obtuse angle, it is described remaining
Gap face（15）Positioned at the upper surface（13）With the cutting rake face（202）Between and with the cutting rake face（202）Phase
Friendship forms cutting edge（18）, the cutting edge（18）Height be less than upper surface（13）Height, the side-locating face（201）With
Lower face（14）Between angle α be acute angle, the cutter groove（4）Including with the lower face（14）The cutter groove bottom surface to offset（24）
And with the side-locating face（201）The two cutter groove sides to offset（25）.
2. milling cutter according to claim 1, it is characterised in that：The side-locating face（201）With cutting rake face
（202）Between ranging from 140 °~170 ° of angle β.
3. milling cutter according to claim 1 or 2, it is characterised in that：Three sides are indent side（20）,
The clearance face（15）Three are set as, the cutting edge（18）Correspond to three.
4. milling cutter according to claim 3, it is characterised in that：Two indent sides（20）Between be equipped with corner plane
（21）, the corner plane（21）, two of which clearance face（15）Point of a knife fillet is crossed to form between three（23）.
5. milling cutter according to claim 1 or 2, it is characterised in that：The cutter hub（1）At least one appearance is equipped with to consider to be worth doing
Slot（5）, the chip pocket（5）Quantity and the Indexable cutting inserts（2）Quantity is identical, the cutter groove（4）Positioned at the appearance
Consider slot to be worth doing（5）It is interior.
6. milling cutter according to claim 1 or 2, it is characterised in that：The fastener（3）For trip bolt.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611176520.3A CN106624100B (en) | 2016-12-19 | 2016-12-19 | A kind of milling cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611176520.3A CN106624100B (en) | 2016-12-19 | 2016-12-19 | A kind of milling cutter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106624100A CN106624100A (en) | 2017-05-10 |
| CN106624100B true CN106624100B (en) | 2018-10-26 |
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ID=58823847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611176520.3A Active CN106624100B (en) | 2016-12-19 | 2016-12-19 | A kind of milling cutter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106624100B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109570595B (en) * | 2018-12-25 | 2022-02-08 | 株洲钻石切削刀具股份有限公司 | Ball head milling blade and ball head milling cutter |
| EP4015124A1 (en) * | 2020-12-21 | 2022-06-22 | CERATIZIT Austria Gesellschaft m.b.H. | Tool for machining and the use of a cutting insert on such a tool |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE526110C2 (en) * | 2002-06-25 | 2005-07-05 | Seco Tools Ab | Cutting tool for chip removal machining with negative base form where the release surface connects to the chip breaker |
| JP4729894B2 (en) * | 2004-09-15 | 2011-07-20 | 三菱マテリアル株式会社 | Insert and throw-away cutting tools |
| SE530780C2 (en) * | 2006-01-10 | 2008-09-09 | Sandvik Intellectual Property | Indexable cutting with different release angles and turning tools |
| EP2412465B1 (en) * | 2010-07-27 | 2017-05-10 | Seco Tools Ab | Indexable cutting insert |
| JP6127439B2 (en) * | 2011-12-12 | 2017-05-17 | 三菱マテリアル株式会社 | Replaceable cutting tool and cutting insert |
| SE536344C2 (en) * | 2012-01-30 | 2013-09-03 | Sandvik Intellectual Property | Milling tools and milling cutters where the cutting edge has an acute pitch |
| EP2893997B1 (en) * | 2014-01-08 | 2019-03-13 | Sandvik Intellectual Property AB | A milling tool |
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2016
- 2016-12-19 CN CN201611176520.3A patent/CN106624100B/en active Active
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| Publication number | Publication date |
|---|---|
| CN106624100A (en) | 2017-05-10 |
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