CN102728882B - Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy - Google Patents
Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy Download PDFInfo
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- CN102728882B CN102728882B CN201210260968.9A CN201210260968A CN102728882B CN 102728882 B CN102728882 B CN 102728882B CN 201210260968 A CN201210260968 A CN 201210260968A CN 102728882 B CN102728882 B CN 102728882B
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Abstract
The invention discloses a tooth-back-cooling-mode-based special tool for helically milling a composite material/titanium alloy. The existing tool has short service life by adopting a bottom cooling mode. The tooth-back-cooling-mode-based special tool for helically milling the composite material/titanium alloy comprises a tool bar, a neck part and a cutting part, wherein the cutting part is connected with the tool bar by virtue of the neck part and consists of four cutter teeth, a cooling hole is arranged on the tooth back of each cutter tooth, four oblique cooling holes are led out from central holes passing through the axis of the tool bar, the aperture of each oblique cooling hole is smaller than that of the central hole, the axis direction directly faces towards the front tool surface of the end cutting edge of the tool, the peripheral cutting edge of the tool and each end cutting edge adopt double tool surfaces of a land, inside cutting edges at the ends of the four cutter teeth pass through the axis of the tool bar and are perpendicular, and three cutting edges are arranged at the end of each cutter tooth. The special tool for helically milling the composite material/titanium alloy can be used for effectively avoiding the plugging of the cooling holes, reducing the wear of the tool, improving the processing quality, prolonging the service life of the tool, increasing the radiation area, restraining the vibration in a cutting process, and decreasing the layering and burring phenomena.
Description
Technical field
The invention belongs to helical milling manufacture field, be specifically related to a kind of composite/titanium alloy spiral milling dedicated tool based on the back of tooth type of cooling.
Background technology
Helical milling technology is a kind of novel hole process technology, and in process, cutter rotation, axial feed are simultaneously around the revolution of the center of machining hole, and the movement locus of cutter is helix, and this motion mode has determined that helical milling has the following advantages.One, eccentric processing can realize the hole of a series of diameters of single diameter tool sharpening, improves cutter utilization rate, reduces costs; Two, helical milling is discontinuous working angles, is conducive to heat radiation; Three, tool diameter is less than hole, and smear metal is convenient discharges, and has improved the surface smoothness in hole; Four, in composite processing process, can produce fine particle, harmful, realize the processing of automation hole by helical milling and can effectively reduce harm.
Along with the fast development of aerospace, these novel structural materials of titanium alloy and composite are widely used.For these novel materials, traditional drilling technique can not meet the requirement of product.For titanium alloy, traditional drilling technique is difficult to solve the technical barriers such as outlet burr, surface smoothness; For composite, traditional drilling technique, because axial force is large, is difficult to avoid the phenomenon of layers of material, and product processing quality is uncontrollable.
At present, greatly develop helical milling equipment and helical milling dedicated tool abroad, and also obtained a lot of achievements, had successful application at Boeing and Air Passenger.But no matter China is being carried out to strict blockade on new techniques aspect helical milling abroad, be helical milling equipment or relevant cutter, be all difficult to from the market directly buy.
In China, University Of Tianjin, Nanjing Aero-Space University, Zhejiang University are obtaining fruitful work aspect helical milling device.But supporting cutter research is also relatively less with it.Based on this background, we,, absorbing on the basis of foreign advanced experience, have invented the helical milling dedicated tool that is applicable to our domestic air mail material (titanium alloy, composite) just.
Summary of the invention
The present invention is directed to the deficiencies in the prior art, proposed a kind of composite/titanium alloy spiral milling dedicated tool based on the back of tooth type of cooling.
A kind of composite/titanium alloy spiral milling dedicated tool based on the back of tooth type of cooling of the present invention, comprise knife bar, neck and cutting tip, cutting tip is connected with knife bar by neck, cutting tip is made up of four cutters tooth, adopt two kinds of forms, and symmetrical between two, not only on the peripheral cutting edge of cutter, adopt the dual rear knife face form that has land, and also adopt the dual rear knife face form of land at each end cutting edge of cutter, the end of each cutter tooth has three sections of cutting edges, inside the end of four cutters tooth, cutting edge is crossed knife bar axis and orthogonal, when blades of cutting tools diameter is D, two pairs of cutter end cutting edge the first points of a knife and the second point of a knife are dislocatedly distributed, be distributed in respectively on the circle that diameter is D/2 and 4D/5, cross the centre bore of knife bar axis and draw four oblique Cooling Holes, Cooling Holes opening is positioned on the back of tooth of cutter tooth, on each cutter tooth back of tooth, have a Cooling Holes, the aperture of each oblique Cooling Holes is less than centre bore, and its axis direction is just to cutter end cutting edge rake face.
A kind of composite/titanium alloy spiral milling dedicated tool based on the back of tooth type of cooling is by perforate on the back of tooth of each cutter tooth, and the direction of Cooling Holes just the most easily there is to the end cutting edge rake face of wearing and tearing to cutter in helical milling process, make smear metal in working angles separate as early as possible with rake face and discharge in time, reduce the friction between smear metal and rake face, effectively reduced the wearing and tearing of cutter and the generation of frictional heat; Wherein the position of a pair of point of a knife is near cutter periphery, and with another, point of a knife rationally misplaced, and can reduce the axial force in tool cutting process, reduces layering and burr phenomena, is more suitable for the especially processing of its laminated material of composite/titanium alloy; On the cutting edge of cutter, grind the dual rear knife face of land, the point of a knife and the cutting edge that are easy to wearing and tearing are strengthened, expand area of dissipation, and can effectively suppress the vibration in working angles, extend on the one hand the life-span of cutter, improve working (machining) efficiency, also improved on the other hand the crudy in hole.
Beneficial effect of the present invention: 1) position of opening is become to the back of tooth of cutter tooth from traditional cutter bottom, the Cooling Holes clogging that can effectively avoid smear metal to cause; 2) by perforate on the back of tooth of each cutter tooth, and make the direction in hole just to end cutting edge rake face, can carry out cutter blade more effective cooling, can make smear metal separate as early as possible with rake face simultaneously, reduce the wearing and tearing of cutter, reduce the impact of frictional heat on cutter, the life-span of improving cutter when improving crudy; 3) on the cutting edge of cutter, adopt the intensity that has the dual rear knife face form of land can effectively increase cutting tip, increase the area of heat radiation, suppress the vibration in working angles simultaneously; 4) cutter position of tool tip and the cutting edge profile after optimization can effectively reduce axial cutting force, reduces layering and burr phenomena in composite/titanium alloy spiral milling process.
Brief description of the drawings
Fig. 1 is cutter overall structure schematic diagram;
Fig. 2 is cutter end pattern schematic diagram;
Fig. 3 is B-B schematic cross-section;
Fig. 4 is A-A schematic cross-section;
Fig. 5 is C-C schematic cross-section.
Detailed description of the invention
As shown in Figure 1, a kind of composite/titanium alloy spiral milling dedicated tool based on the back of tooth type of cooling comprises knife bar 3, neck 2 and cutting tip 1, cutting tip 1 is connected with knife bar 3 by neck 2, as shown in Figure 2, cutting tip 1 is made up of four cutters tooth 5, adopt two kinds of forms, and symmetrical between two, as shown in Figure 5, not only on the peripheral cutting edge of cutter, adopt the dual rear knife face form that has land, and also adopt the dual rear knife face form of land at each end cutting edge of cutter, the end of each cutter tooth 5 has three sections of cutting edges, inside the end of four cutters tooth 5, cutting edge 6 is crossed knife bar axis and orthogonal, when blades of cutting tools diameter is D, as Fig. 3, shown in Fig. 4, two pairs of cutter end cutting edge the first points of a knife 7 and the second point of a knife 9 are dislocatedly distributed, be distributed in respectively on the circle that diameter is 4D/5 and D/2, cross the centre bore 4 of knife bar axis and draw four oblique Cooling Holes 8, Cooling Holes 8 openings are positioned on the back of tooth of cutter tooth 5, on each cutter tooth back of tooth, have a Cooling Holes 8, the aperture of each oblique Cooling Holes 8 is less than centre bore 4, and its axis direction is just to cutter end cutting edge rake face.
Claims (1)
1. composite/titanium alloy spiral milling the dedicated tool based on the back of tooth type of cooling, it is characterized in that: comprise knife bar, neck and cutting tip, cutting tip is connected with knife bar by neck, cutting tip is made up of four cutters tooth, adopt two kinds of forms, and symmetrical between two, not only on the peripheral cutting edge of cutter, adopt the dual rear knife face form that has land, and also adopt the dual rear knife face form of land at each end cutting edge of cutter, the end of each cutter tooth has three sections of cutting edges, inside the end of four cutters tooth, cutting edge is crossed knife bar axis and orthogonal, when blades of cutting tools diameter is D, two pairs of cutter end cutting edge the first points of a knife and the second point of a knife are dislocatedly distributed, be distributed in respectively on the circle that diameter is D/2 and 4D/5, cross the centre bore of knife bar axis and draw four oblique Cooling Holes, Cooling Holes opening is positioned on the back of tooth of cutter tooth, on each cutter tooth back of tooth, have a Cooling Holes, the aperture of each oblique Cooling Holes is less than centre bore, and its axis direction is just to cutter end cutting edge rake face.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210260968.9A CN102728882B (en) | 2012-07-26 | 2012-07-26 | Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210260968.9A CN102728882B (en) | 2012-07-26 | 2012-07-26 | Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102728882A CN102728882A (en) | 2012-10-17 |
| CN102728882B true CN102728882B (en) | 2014-08-06 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210260968.9A Expired - Fee Related CN102728882B (en) | 2012-07-26 | 2012-07-26 | Tooth-back-cooling-mode-based special tool for helically milling composite material/titanium alloy |
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Families Citing this family (8)
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|---|---|---|---|---|
| CN102941373B (en) * | 2012-10-18 | 2015-07-01 | 浙江大学 | Special cutter for spiral milling dimples of composite material |
| CN106475617A (en) * | 2016-11-21 | 2017-03-08 | 平湖市山特螺纹工具有限公司 | A kind of CNC milling cutter with four teeth |
| CN107008934B (en) * | 2017-05-04 | 2018-11-09 | 大连理工大学 | The lateral interior cold hole design method of tool wear when inhibiting to answer material drilling |
| CN107695402A (en) * | 2017-11-20 | 2018-02-16 | 中山市园丰精密刃具有限公司 | A kind of outward appearance forming cutter |
| CN108637330B (en) * | 2018-05-04 | 2019-10-29 | 大连理工大学 | A kind of forward direction of composite material-feed reversing method for helically milling hole |
| WO2019210506A1 (en) * | 2018-05-04 | 2019-11-07 | 大连理工大学 | Helical milling tool with forward and backward feeding |
| CN108637337A (en) * | 2018-05-04 | 2018-10-12 | 大连理工大学 | A kind of forward direction-reverse acting spiral milling cutter |
| CN108789856A (en) * | 2018-05-24 | 2018-11-13 | 安顺市杰勇石业有限公司 | A kind of cooling vertical stone process tool and its manufacturing method certainly |
Citations (7)
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|---|---|---|---|---|
| US4411563A (en) * | 1981-07-31 | 1983-10-25 | Elwood Moon | Cutter device |
| CN2700035Y (en) * | 2004-04-10 | 2005-05-18 | 李良柱 | Cemented carbide spiral mill |
| EP1894655A1 (en) * | 2006-08-28 | 2008-03-05 | Fraisa Holding AG | Milling tool for chip removing machining of workpieces |
| CN201231337Y (en) * | 2008-07-09 | 2009-05-06 | 厦门金鹭特种合金有限公司 | Butt mill of gradual core-diameter with large arc groove |
| CN101983810A (en) * | 2010-11-30 | 2011-03-09 | 株洲钻石切削刀具股份有限公司 | High-strength unequal helical angle end mill |
| CN201895131U (en) * | 2010-11-23 | 2011-07-13 | 常州市新西华亚工具有限公司 | Three-blade end mill |
| CN202106077U (en) * | 2011-06-10 | 2012-01-11 | 哈尔滨汽轮机厂有限责任公司 | Inner cooled R (round bladed) milling cutter with turning blades |
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2012
- 2012-07-26 CN CN201210260968.9A patent/CN102728882B/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4411563A (en) * | 1981-07-31 | 1983-10-25 | Elwood Moon | Cutter device |
| CN2700035Y (en) * | 2004-04-10 | 2005-05-18 | 李良柱 | Cemented carbide spiral mill |
| EP1894655A1 (en) * | 2006-08-28 | 2008-03-05 | Fraisa Holding AG | Milling tool for chip removing machining of workpieces |
| CN201231337Y (en) * | 2008-07-09 | 2009-05-06 | 厦门金鹭特种合金有限公司 | Butt mill of gradual core-diameter with large arc groove |
| CN201895131U (en) * | 2010-11-23 | 2011-07-13 | 常州市新西华亚工具有限公司 | Three-blade end mill |
| CN101983810A (en) * | 2010-11-30 | 2011-03-09 | 株洲钻石切削刀具股份有限公司 | High-strength unequal helical angle end mill |
| CN202106077U (en) * | 2011-06-10 | 2012-01-11 | 哈尔滨汽轮机厂有限责任公司 | Inner cooled R (round bladed) milling cutter with turning blades |
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| CN102728882A (en) | 2012-10-17 |
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