CN208556106U - A kind of ball end mill of narrow space corner and base angle processing - Google Patents
A kind of ball end mill of narrow space corner and base angle processing Download PDFInfo
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- CN208556106U CN208556106U CN201820604007.8U CN201820604007U CN208556106U CN 208556106 U CN208556106 U CN 208556106U CN 201820604007 U CN201820604007 U CN 201820604007U CN 208556106 U CN208556106 U CN 208556106U
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- tooth
- bottom tooth
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- narrow space
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Abstract
The utility model discloses the ball end mill of a kind of narrow space corner and base angle processing, for structural member narrow space corner and base angle feature and its intermediate location Milling Processes, including the structures such as cutting portion and shank, wherein cutting portion includes bottom tooth, all teeth, chip pocket, bottom tooth crosses center portion and all teeth cross center portion；Bottom tooth and all tooth numbers of teeth are 2, and indsole tooth is divided into outer layer bottom tooth and internal layer bottom tooth, are interspersed, and are provided with bottom tooth and cross center portion point, and outer layer bottom tooth participates in material removal process, and tooth evacuation in internal layer bottom prevents cutting data excessive；Side week tooth is provided with all teeth and crosses center portion point, and all teeth and cutter outer diameter angle is arrangedA.Efficient high finishing of the cutter for narrow space corner and base angle prevents from improving machined surface quality because cutting process caused by cutting data is excessive is unstable.
Description
Technical field
The utility model relates to a kind of narrow space corners and base angle to process ball end mill, belong to tool for cutting machining neck
Domain.
Background technique
With the rapid development of aircraft industry, aircraft structure feature enlargement, complication, high precision int increasingly have
The difficult processing structure feature such as thin-walled, deep chamber, precision, especially has the narrow deep trouth of more opening character difference in joint parts
Cavity configuration belongs to typical difficult processing structure.Interior shape, web, corner and the base angle of narrow deep trouth chamber generally use Milling Process
Mode is formed, but since cutter draw ratio is big, cutting data is concentrated and the factors such as narrow space tool path pattern limitation cause
Cutting process is unstable, causes cutting surface second-rate.
The narrow deep trouth cavity configuration of structural member is by web, side wall, corner, base angle and corner and base angle transitional region group
At, it is that cutter and workpiece contact length are big in the base angle in processing groove bottom of chamber portion, corner and transitional region, cutting data is concentrated,
Cutting force is big, and to prevent cutter and deep trouth cavity configuration from interfering, selects milling cutter draw ratio big, process cutting vibration
Obviously, " playing knife " phenomenon is generated, the sword forced vibration of milling cutter week can mill the machined surface for hurting interior shape, generate undulatory surface and lack
It falls into, reduces surface quality, it is overproof to even result in part size.It is at present to prevent the generation of manufacturing deficiency from mainly using tool path pattern
Optimization and cutting parameter optimize two kinds of processes: when processing base angle and corner structure, suitable knife swinging angle is set,
The milling of milling cutter week sword is prevented to hurt machined surface；Using lesser cutting speed, feed engagement, cutting-in and width is cut, reduces cutting
Power reduces cutting vibration amplitude.But for narrow deep trouth cavity configuration, the mode for increasing knife swinging angle can cause cutter and workpiece
Constructive interference, reducing cutting parameter causes stock-removing efficiency to reduce, and lacks corner and bottom corner structure efficiently and high-precision process tool
With method.
Summary of the invention
The utility model for existing slotting cutter process cutting vibration existing for narrow deep trouth chamber corner and base angle position it is big,
The problem of surface quality difference provides a kind of ball end mill for being layered and processing and avoid machined surface, realizes narrow deep trouth chamber
Corner and base angle position are efficiently finished with height.
The technical solution of the utility model are as follows:
A kind of ball end mill of narrow space corner and base angle processing, including shank and cutting portion, cutting portion include bottom
Tooth, all tooth, chip pocket；Bottom tooth is divided into outer layer bottom tooth and internal layer bottom tooth, and outer layer bottom tooth and internal layer bottom tooth are interspersed, outer layer bottom tooth
With cutting edge, slotting cutter spherical surface is completely covered in the surface of revolution of outer layer bottom tooth cutting edge.
The week tooth has to the diminishing taper of shank.
The taper of the week tooth is 2 ~ 4 °.
The bottom tooth and all tooth numbers of teeth are 2.
The bottom tooth is provided with bottom tooth and crosses center portion point.
The bottom tooth crosses heart part cutting edge lengthL 1=0.5~1mm。
The side of the week tooth is provided with all teeth and crosses center portion point.
The week tooth crosses heart part cutting edge lengthL 2=1~2mm。
The outer layer bottom tooth radiusR 1=0.5D, internal layer bottom tooth radiusR 2=R 1-1~2mm。
The outer layer bottom tooth of the utility model milling cutter participates in material removal process, and tooth evacuation in internal layer bottom prevents cutting data mistake
Greatly；Side week tooth is provided with all teeth and crosses center portion point, and the contraction structure of all teeth is arranged, and all tooth cutting edge forced vibrations is avoided to mill
Hurt machined surface.All teeth of the utility model milling cutter have taper, are limited and can not be added by narrow space when slotting cutter feed
When adding knife swinging angle, all teeth and side wall machined surface have avoiding space, and milling affected by vibration is avoided to hurt machined surface.
The vertical milling number of teeth of the utility model milling cutter is 2, avoids narrow space is multiple tooth from simultaneously participating in cutting.
The outer layer bottom tooth and internal layer bottom tooth of the utility model milling cutter are interspersed, and have the processing that partly overlaps, and guarantee
Machining allowance all removes, wherein outer layer bottom tooth radiusR 2=0.5D, internal layer bottom tooth radiusR 1=R 2- 1 ~ 2mm,DIt is straight for slotting cutter
Diameter.
The side outer layer bottom tooth of the utility model milling cutter had center portion point, crossed heart cutting edge lengthL 1=0.5 ~ 1mm is protected
Demonstrate,prove the removal of two sides shear blade contact site machining allowance.The other side week tooth of the utility model milling cutter had center portion point, excessively anxious
Cut sword lengthL 2=1 ~ 2mm guarantees bottom tooth and all tooth intermediate location surplus removals.
It is the cutting edge that outer layer bottom tooth is more than cutter rotation center that the bottom tooth of the utility model milling cutter, which crosses center portion, and the bulb is vertical
The outer layer cutting edge of milling cutter is interspersed and has lap, and outer layer bottom tooth cutting edge portion structure is covered completely in cutting process
Lid slotting cutter spherical surface.The surface of revolution of outer layer bottom tooth cutting edge is the curved surface that cutting edge is rotarily formed around tool axis, and the curved surface is complete
The hemisphere face of all standing ball end mill front end.
It is the cutting edge tangent with outer layer bottom tooth spherical surface that all teeth of the utility model milling cutter, which cross center portion point, with tapered week
Tooth and all teeth cross the friendship of center portion split-phase, intersection point and point of contact and cross heart partial-length apart from for all swordsL 2.All teeth cross heart subparticipation cutting,
It prevents from deforming into bottom tooth and all tooth transition portions because of cutting lay, generates step in finished surface.
Ball end mill provided by the utility model is processed for narrow space corner and base angle, realizes base angle surplus the bottom of along
Sword direction layered cutting avoids causing cutting load big because cutting lay is too long, reduces cutting vibration；Center portion is crossed by the way that all teeth are arranged
Divide and avoid angle, all swords, which mill, when guaranteeing that base angle and corner process, caused by avoiding because of cutting vibration hurts the machined table such as side wall
Face；It realizes that chip-load dispersion is avoided with finished surface by cutter structure, reduces knife swinging angle and layering when technique journey is compiled and cut
The complexity for cutting setting, can not be by being arranged the case where measures such as pivot angle avoid machining damage especially suitable for narrow space.
Detailed description of the invention
Fig. 1 is ball end mill structural schematic diagram.
Fig. 2 is ball end mill cutting edge structure schematic diagram.
When Fig. 3 in Fig. 2 C partial enlarged view.
Fig. 4 is corner and bottom corner structure schematic diagram.
In figure, 1, bottom tooth；2, all teeth；3, chip pocket；4, shank；5, outer layer bottom tooth；6, bottom tooth crosses center portion point；7, internal layer bottom
Tooth；8, all teeth cross center portion point；9, base angle；10, side wall；11, corner；12, corner and base angle transition portion；13, web；A, all teeth
Outer diameter and cutter outer diameter angle.
Specific embodiment
The utility model is further described with reference to the accompanying drawings and examples, but the utility model patent and unlimited
In this example.
Embodiment 1
As shown in Figure 1, Figure 2, Figure 3 shows, the ball end mill of a kind of the narrow space corner and base angle processing of the utility model,
Including shank 4 and cutting portion, cutting portion includes bottom tooth 1, all tooth 2, chip pocket 3；Bottom tooth 1 divides for outer layer bottom tooth 5 and internal layer bottom tooth
7, outer layer bottom tooth 5 and internal layer bottom tooth 7 are interspersed, and outer layer bottom tooth 5 has cutting edge, and the surface of revolution of 5 cutting edge of outer layer bottom tooth is complete
All standing slotting cutter spherical surface.The bottom tooth of the utility model milling cutter and all tooth numbers of teeth are 2.
Embodiment 2
As shown in Figure 1, Figure 2, Figure 3 shows, the ball end mill of a kind of the narrow space corner and base angle processing of the utility model,
Including shank and cutting portion, cutting portion includes bottom tooth 1, all tooth 2, chip pocket 3；Bottom tooth 1 divides for outer layer bottom tooth 5 and internal layer bottom tooth 7,
Outer layer bottom tooth 5 and internal layer bottom tooth 7 are interspersed, and outer layer bottom tooth 5 has cutting edge, and the surface of revolution of outer layer bottom tooth cutting edge covers completely
Lid slotting cutter spherical surface.Outer layer bottom tooth 5 is provided with bottom tooth and crosses center portion point 6.5 radius of outer layer bottom toothR 1=0.5D, internal layer bottom tooth radiusR 2=R 1-1~2mm.Bottom tooth crosses heart part cutting edge lengthL 1=0.5~1mm。
Embodiment 3
As shown in Figure 1, Figure 2, Figure 3 shows, the ball end mill of a kind of the narrow space corner and base angle processing of the utility model,
Including shank and cutting portion, cutting portion includes bottom tooth 1, all tooth 2, chip pocket 3；Bottom tooth 1 divides for outer layer bottom tooth 5 and internal layer bottom tooth 7,
Outer layer bottom tooth 5 and internal layer bottom tooth 7 are interspersed, and outer layer bottom tooth 5 has cutting edge, and the surface of revolution of outer layer bottom tooth cutting edge covers completely
Lid slotting cutter spherical surface.Bottom tooth 1 and all 2 numbers of teeth of tooth are 2.All teeth 2 have to the diminishing taper of shank.The taper of all teeth 2 is 2
~ 4 °, i.e., the angle of all teeth and cutter outer diameter is 2 ~ 4 °.The side of all teeth 2 is provided with all teeth and crosses center portion point 8.The utility model milling
Knife two sides week toothings is different, and wherein side is provided with all teeth and crosses center portion point 8, and it is tangent with outer layer bottom tooth that all teeth cross center portion point 8, cuts
Point such as the midpoint Fig. 2P 1It is shown, pointP 1Be located across cutter sphere centre and on the vertical line of center of rotation axis 14 15；All teeth
Center portion point is crossed to intersect at a little with all toothings with angleP 2, pointP 1WithP 2The distance between beL 2, center portion cutting, which is crossed, for all teeth cuts
Sword length.Other side week tooth was not provided with center portion point, and all teeth 2 intersect at a little with outer layer bottom toothP 3, pointP 3It is located across cutter spherical surface
On the vertical line 15 at center, vertical line 15 is perpendicular to center of rotation axis 14.All teeth cross the cutting edge length of center portion point 8L 2=1~
2mm。
Embodiment 4
As shown in Figure 1, Figure 2, Figure 3 and Figure 4, a kind of narrow space corner of the utility model and the bulb of base angle processing are vertical
Milling cutter is used for narrow space corner and base angle high-efficiency high-accuracy Milling Process.
The milling cutter of the utility model is used for corner 11, base angle 9 and the corner and base angle mistake of the narrow deep trouth chamber of Milling Process
Cross part 12, including shank 4 and cutting portion, cutting portion includes that bottom tooth 1, all teeth 2, chip pocket 3, bottom tooth cross center portion 6 and all tooth mistakes
Center portion point 8, the ball end mill number of teeth are 2, and cutter diameter isD。
Bottom tooth 1, which divides, crosses center portion point 6, outer layer bottom tooth 5 and internal layer bottom tooth 7 in staggeredly for outer layer bottom tooth 5, internal layer bottom tooth 7, bottom tooth
Distribution, and have and partly overlap, 1 radius of outer layer bottom toothR 2=0.5D, 7 radius of internal layer bottom toothR 1=R 2-1~2mm.Side outer layer bottom tooth
5 connection bottom teeth cross center portion point 6, cross heart cutting edge lengthL 1=0.5~1mm。
The angle of all tooth 2 structure and cutter outer diameterA=2 ~ 4 °, all teeth and side wall machined surface have avoiding space, are adding
It can be not provided with knife swinging angle when the structures such as work corner 11 and base angle 9, avoid interfering with side wall 10.
Tooth 2 connected all teeth and crossed center portion point 8 side week, crossed heart cutting edge lengthL 2=1~2mm。
Claims (9)
1. the ball end mill of a kind of narrow space corner and base angle processing, including shank and cutting portion, which is characterized in that cutting
Portion includes bottom tooth, all tooth, chip pocket；Bottom tooth is divided into outer layer bottom tooth and internal layer bottom tooth, and outer layer bottom tooth and internal layer bottom tooth are interspersed,
Outer layer bottom tooth has cutting edge, and slotting cutter spherical surface is completely covered in the surface of revolution of outer layer bottom tooth cutting edge.
2. the ball end mill of a kind of narrow space corner according to claim 1 and base angle processing, which is characterized in that institute
Stating all teeth has to the diminishing taper of shank.
3. the ball end mill of a kind of narrow space corner according to one of claims 1 or 2 and base angle processing, feature
It is, the bottom tooth and all tooth numbers of teeth are 2.
4. the ball end mill of a kind of narrow space corner according to claim 2 and base angle processing, which is characterized in that institute
The taper for stating all teeth is 2 ~ 4 °.
5. the ball end mill of a kind of narrow space corner according to claim 1 or 2 and base angle processing, feature exist
In the bottom tooth is provided with bottom tooth and crosses center portion point.
6. the ball end mill of a kind of narrow space corner according to claim 5 and base angle processing, characterized in that described
Bottom tooth crosses heart part cutting edge lengthL 1=0.5~1mm。
7. the ball end mill of a kind of narrow space corner according to claim 1 or 2 and base angle processing, feature exist
In the side of the week tooth is provided with all teeth and crosses center portion point.
8. the ball end mill of a kind of narrow space corner according to claim 7 and base angle processing, which is characterized in that institute
It states all teeth and crosses heart part cutting edge lengthL 2=1~2mm。
9. the ball end mill of a kind of narrow space corner according to claim 1 or 2 and base angle processing, feature exist
In the outer layer bottom tooth radiusR 1=0.5D, internal layer bottom tooth radiusR 2=R 1-1~2mm。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604007.8U CN208556106U (en) | 2018-04-26 | 2018-04-26 | A kind of ball end mill of narrow space corner and base angle processing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820604007.8U CN208556106U (en) | 2018-04-26 | 2018-04-26 | A kind of ball end mill of narrow space corner and base angle processing |
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| CN208556106U true CN208556106U (en) | 2019-03-01 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380952A (en) * | 2018-04-26 | 2018-08-10 | 成都飞机工业（集团）有限责任公司 | A kind of ball end mill of narrow space corner and base angle processing |
| CN112033331A (en) * | 2020-07-28 | 2020-12-04 | 成都飞机工业（集团）有限责任公司 | Group hole measurement swing angle planning method based on three-coordinate measuring needle |
-
2018
- 2018-04-26 CN CN201820604007.8U patent/CN208556106U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108380952A (en) * | 2018-04-26 | 2018-08-10 | 成都飞机工业（集团）有限责任公司 | A kind of ball end mill of narrow space corner and base angle processing |
| CN112033331A (en) * | 2020-07-28 | 2020-12-04 | 成都飞机工业（集团）有限责任公司 | Group hole measurement swing angle planning method based on three-coordinate measuring needle |
| CN112033331B (en) * | 2020-07-28 | 2022-05-10 | 成都飞机工业（集团）有限责任公司 | Group hole measurement swing angle planning method based on three-coordinate measuring needle |
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