CN106881567B - A kind of drilling process of composite material metal inclined hole - Google Patents
A kind of drilling process of composite material metal inclined hole Download PDFInfo
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- CN106881567B CN106881567B CN201710127252.4A CN201710127252A CN106881567B CN 106881567 B CN106881567 B CN 106881567B CN 201710127252 A CN201710127252 A CN 201710127252A CN 106881567 B CN106881567 B CN 106881567B
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- diameter
- inclined hole
- composite material
- hole
- material metal
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)
- Drilling And Boring (AREA)
Abstract
A kind of drilling process of composite material metal inclined hole, it has eight big steps: one, positioning clamps；Two, 12.3 inclined hole of helical milling φ；Three, 9.3 through-hole of φ is bored；Four, M16 thread Pilot hole is bored；Five, 17.4 counter sink of boring φ；Six, lathe attacks M16*2 screw thread；Seven, M16*2 screw thread is attacked by hand；Eight, processing, disassembling fixture are completed.The present invention is directed to the characteristic feature that space product shares --- connection inclined hole, solve composite material metal inclined hole work in-process easily " allow knife ", not the problems such as machining accuracy is not high and relies on drill jig, a kind of effective solution scheme is provided for the inclined hole-drilling of the special-shaped shell of drill jig can not be installed, there is actual reference in the manufacture field of composite material metal inclined hole.
Description
Technical field
The invention belongs to metallic composite cutting technology field, more particularly to a kind of more Material cladding inclined holes
High-precision low cost drilling process.
Background technique
Space product mostly uses the double-layer structure of composite material metal, and outer layer heat-resistant composite material hardness is high, cannot soak,
Inner layer metal material hardness is lower, is also easy to produce chip and scratches composite material.Each section is all made of inclined hole connection, and when inclined hole-drilling
Since axis is not orthogonal to drilling plane, at drilling material with high hardness (such as space product outer layer heat-resistant composite material), pole
Easily off-axis when drill bit being caused to pierce, causes the verticality in hole overproof, i.e. " allow knife " phenomenon.Traditional handicraft mostly uses drill jig
Guarantee inclined hole-drilling precision, although this method can guarantee the accuracy of form and position in hole, the installation of one side drill jig increases dress
The time is pressed from both sides, another aspect drill jig also exacerbates the abrasion of cutter to the continued wear of cutter to a certain degree, and it is economical to reduce processing
Property.
In addition to this, due to simultaneously two kinds of materials of drilling inclined hole, there are two kinds of materials, composite woods on same normal plane
The performance difference of material and metal material, cutter unbalance stress when causing to process, easily causes the profile tolerance in hole overproof and screw thread
Side is deeper, and side is shallower, influences the assembly of subsequent each section.
Summary of the invention
Technology of the invention solves the problems, such as are as follows: overcomes the deficiencies of the prior art and provide a kind of the compound of high-precision low cost
The drilling process of material metal inclined hole, it is eccentric to solve present in existing composite material metal inclined hole-drilling " allow knife " and tapping
The problems such as.The process can effectively promote the accuracy of form and position of inclined hole-drilling, reduce processing cost.
The technical solution adopted by the present invention are as follows:
A kind of drilling process of composite material metal inclined hole, steps are as follows:
(1) positioning clamps:
Swivel table is placed on platen and workpiece is installed on swivel table by centering, clamping swivel table
On, and clamping is positioned, after clamping, the axis for overturning swivel table to inclined hole to be drilled is vertical with platen；
(2) inclined hole that helical milling diameter is B on workpiece, milling to composite layer do not enter metal layer；
(3) coaxial for the inclined hole of B with diameter on the basis of diameter is the inclined hole of B, continue the through-hole that drill straight diameter is A；
(4) coaxial for the inclined hole of B with diameter, drill straight diameter is the thread Pilot hole of C；
(5) coaxial for the inclined hole of B with diameter, boring diameter is the counter sink of E；
(6) by lathe, the screw thread guiding for the threaded hole that diameter is D is attacked on the thread Pilot hole that diameter is C；
(7) screw thread for the threaded hole that diameter is D is attacked by hand；
(8) processing of composite material metal inclined hole, disassembling fixture are completed.
The present invention has the advantage that compared with prior art and effect:
(1) present invention is reduced the material removal amount of each drilling, can be effectively improved drilling by the way of gradation drilling
When the inclined hole of composite material metal bi structure the case where unbalance stress, while while can effectively avoid drilling metal material, generated
Big cutting heat and situation about can not cool down occurs.
(2) present invention is by the way of first drilling out locating platform on inclined hole, when can effectively keep away drilling composite material inclined hole,
Since composite hardness is high and drill axis is not orthogonal to processing plane, it is oblique to solve drilling for caused " allow knife " phenomenon
Hole needs to guarantee by drill jig the problem of the accuracy of form and position, this technology can be used for shape abnormal shape and be difficult to install the oblique of the section of drill jig
Hole machined.
(3) present invention can both attack to avoid machine tool tapping to simultaneously in such a way that lathe and manual tapping combine
Eccentric problem is easy containing composite material and when metal material, can also be to avoid manual tapping perpendicularity difference the problem of, is one
The effective means of kind machining composite material metal inclined hole screw thread.
Detailed description of the invention
Fig. 1 is the flow chart of entire processing method；
Fig. 2 is that workpiece is installed on to the installation diagram after swivel table.
Fig. 3 is after overturning swivel table, to make inclined hole axis perpendicular to the schematic diagram after platen.
Fig. 4 is the schematic diagram after 12.3 inclined hole of helical milling φ.
Fig. 5 is the schematic diagram after 9.3 through-hole of drilling φ.
Fig. 6 is the schematic diagram after drilling M16 thread Pilot hole (φ 14).
Fig. 7 is the schematic diagram after 17.4 counter sink of boring φ.
Fig. 8 is the schematic diagram attacked after M16*2 screw thread.
Specific embodiment
Present invention process method is specific to the inclined hole-drilling of space product composite material metal bi structure, passes through conjunction
Reason selects cutter and arranges process, proposes a kind of high-precision low cost drilling process of more Material cladding inclined holes.The scheme stream
Journey is as shown in Figure 1, the specific steps are as follows:
Composite material metal works in the present invention include two parts, and it is composite material outside metal layer that inside, which is metal layer,
Layer.The composite layer uses high silicone/phenolic resin resin composite materials.
Steps are as follows for drilling:
(1) positioning clamps:
Swivel table is placed on platen and workpiece is installed on swivel table by centering, clamping swivel table
On, and clamping is positioned, as shown in Fig. 2, figure label 1 represents metal, 2 represent composite material, and 3 represent inclined hole axis, and 4 represent ten thousand
Energy turntable, 5 represent platen.In attached drawing of the present invention, workpiece only depicts the Local map of inclined hole part, and swivel table is office
Portion's schematic diagram.Inclined hole outer layer of composite material indicates that inner layer metal material is indicated using monocline line with intersection ruling.After clamping, turn over
It is vertical with platen to the axis of inclined hole to be drilled to turn swivel table, as shown in Figure 3；The running accuracy of the swivel table
It is ± 3 ", it is ± 5 that pitching, which overturns precision, ".
Inclined hole axis is not coaxial with cutter spindle Z axis, therefore traditional three axis machining center is unable to complete inclined hole processing, needs
Using expensive Five-axis NC Machining Center.It can allow three shaft vertical machining centers that can also complete inclined hole to add using swivel table
Work has excellent economy.
(2) inclined hole that helical milling diameter is B on workpiece, milling to composite layer do not enter metal layer；
Specifically: use slotting cutter milling diameter for the inclined hole of B, milling to composite layer, speed of mainshaft control exists
Within 2000rev/min, feed speed 30mm/min-60mm/min, as shown in Figure 4.The cutter diameter d's of the slotting cutter
Value range is B/2 < d < B.
Diameter is that the inclined hole of B is fabrication hole, and effect is first is that the material removal amount to drill every time can be reduced, second is that first existing
After milling out a plane on workpiece, be conducive to the centering of subsequent drilling, so that it is cut plane perpendicular to axially bored line, avoid generating
" allow knife " phenomenon caused by because of cutter force unbalance.
(3) coaxial for the inclined hole of B with diameter on the basis of diameter is the inclined hole of B, continue the through-hole that drill straight diameter is A；
Use diameter for the fluted drill of A, drill bit selects coated cutting tool, and the speed of mainshaft is controlled in 1000rev/min-
2000rev/min, feed speed 30mm/min-60mm/min.
Since the step needs drilling to metal material layer, it is also easy to produce biggish cutting heat, and due to high silicone/phenolic resin tree
The particularity of resin composite material is not available coolant liquid and is cooled down, and can only use dehydrated alcohol.Cutting selected by this patent
Parameter can prevent excessively high cutting parameter from bringing biggish cutting heat, cause ethanol combustion, workpiece of burning.Drilling mode uses
Peck formula drilling.After the completion as shown in Figure 5.
(4) coaxial for the inclined hole of B with diameter, drill straight diameter is the thread Pilot hole of C；
The thread Pilot hole that diameter is C for the flat three pointed drills drill diameter of C is used, the speed of mainshaft is controlled in 1000rev/
Min-2000rev/min, feed speed 30mm/min-60mm/min；Dehydrated alcohol should be cooperated cooling when drilling metal material,
Feed speed is adjusted to 30mm/min, and speed of mainshaft 1000rev/min, drilling mode is using formula drilling is pecked, after the completion such as Fig. 6 institute
Show.
(5) coaxial for the inclined hole of B with diameter, boring diameter is the counter sink of E；
Use boring cutter boring diameter for the counter sink of E, speed of mainshaft control is in 1000rev/min-1500rev/min, feeding
Speed is 30mm/min-60mm/min, as shown in Figure 7.
(6) by lathe, the screw thread guiding for the threaded hole that diameter is D is attacked on the thread Pilot hole that diameter is C；
The long guide tap that diameter is D is installed on machine tool chief axis, tapping is carried out, only tap out is oriented to, and tapping is deep
Degree is no more than the one third of the entire depth of thread.
(7) screw thread for the threaded hole that diameter is D is attacked by hand；
Selecting diameter is the short guide tap of D, and the mode of manual tapping is used to complete diameter attacking for the threaded hole screw thread of D
Silk, as shown in Figure 8.Since inclined hole includes simultaneously two kinds of materials of composite material and metal in same layer, when leading to tapping, stress is not
, if directlying adopt machine tool tapping, one side tapping depth is difficult to control, and the shallow situation in side depth side occurs, on the other hand
Cutter is easy to fracture.And the mode of manual tapping is reused after the lathe tapping guiding that this patent is selected, in combination with machine
The bed tapping precision high advantage high with manual tapping controllability, the thread quality after completion is high, meets requirement.
(8) processing of composite material metal inclined hole, disassembling fixture are completed.
Diameter A < B < C < D < E in the present invention.
Embodiment:
Steps are as follows for drilling:
(1) positioning clamps:
Swivel table is placed on platen and workpiece is installed on swivel table by centering, clamping swivel table
On, and clamping is positioned, as shown in Figure 2.After clamping, the axis and platen of overturning swivel table to inclined hole to be drilled hang down
Directly, as shown in Figure 3；
(2) inclined hole that helical milling diameter is B on workpiece, wherein B takes φ 12.3；
Specifically: use the slotting cutter milling diameter of φ 8 for the inclined hole of φ 12.3, milling to composite layer, main shaft turns
Speed is 1500rev/min, and feed speed 60mm/min, milling depth is the 15mm (depth of hole long side side highest point to bottom hole
Degree), as shown in Figure 4.
(3) coaxial with 12.3 inclined hole of φ on the basis of 12.3 inclined hole of φ, continue the through-hole that drill straight diameter is A, wherein A takes
φ9.3；
Using the fluted drill of φ 9.3, drill bit selects coated cutting tool, and the speed of mainshaft is controlled in 1500rev/min, feed speed
For 60mm/min, as shown in Figure 5.
It (4) is that 12.3 inclined hole of φ is coaxial with diameter, drill straight diameter is the thread Pilot hole of C, and wherein C takes φ 14；
Using the thread Pilot hole of the flat three pointed drills drilling φ 14 of φ 14, speed of mainshaft control is in 1500rev/min, feeding
Speed is 60mm/min；Dehydrated alcohol should be cooperated cooling when drilling metal material, feed speed is adjusted to 30mm/min, the speed of mainshaft
1000rev/min, drilling mode is using formula drilling is pecked, after the completion as shown in Figure 6.
(5) coaxial for the inclined hole of φ 12.3 with diameter, boring diameter is the counter sink of E, and wherein E takes φ 17.4；
Use boring cutter boring diameter for the counter sink of φ 17.4, the speed of mainshaft is controlled in 1500rev/min, and feed speed is
60mm/min, as shown in Figure 7.
(6) by lathe, the screw thread guiding for the threaded hole that diameter is D is attacked on the thread Pilot hole of φ 14, wherein D takes 16；
The long guide tap of M16*2 is installed on machine tool chief axis, tapping is carried out, only tap out is oriented to, tapping depth
For 5mm.
(7) screw thread of M16 threaded hole is attacked by hand；
The short guide tap of M16*2 is selected, using manual tapping, as shown in Figure 8.Because being pressed to by cutter when manual tapping
Composite layer side guarantees that the tapping thread depth of two layers of material is consistent.
(8) processing of composite material metal inclined hole, disassembling fixture are completed.
Claims (10)
1. a kind of drilling process of composite material metal inclined hole, it is characterised in that steps are as follows:
(1) positioning clamps:
Swivel table is placed on platen and workpiece is installed on swivel table by centering, clamping swivel table, and
Positioning clamps, and after clamping, the axis for overturning swivel table to inclined hole to be drilled is vertical with platen；
(2) inclined hole that helical milling diameter is B on workpiece, milling to composite layer do not enter metal layer；
(3) coaxial for the inclined hole of B with diameter on the basis of diameter is the inclined hole of B, continue the through-hole that drill straight diameter is A；
(4) coaxial for the inclined hole of B with diameter, drill straight diameter is the thread Pilot hole of C；
(5) coaxial for the inclined hole of B with diameter, boring diameter is the counter sink of E；
(6) by lathe, the screw thread guiding for the threaded hole that diameter is D is attacked on the thread Pilot hole that diameter is C；
(7) screw thread for the threaded hole that diameter is D is attacked by hand；
(8) processing of composite material metal inclined hole, disassembling fixture are completed.
2. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the workpiece packet
Two parts are included, it is composite layer outside metal layer that inside, which is metal layer,.
3. a kind of drilling process of composite material metal inclined hole according to claim 2, it is characterised in that: the composite wood
The bed of material uses high silicone/phenolic resin resin composite materials.
4. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: described omnipotent turn
The running accuracy of platform is ± 3 ", it is ± 5 that pitching, which overturns precision, ".
5. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the step
(2) on workpiece helical milling diameter be B inclined hole, milling to composite layer, specifically: use slotting cutter milling diameter for
The inclined hole of B, milling to composite layer, the speed of mainshaft control the feed speed 30mm/min- within 2000rev/min
The value range of 60mm/min, the cutter diameter d of the slotting cutter are B/2 < d < B.
6. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the step
(3) on the basis of diameter is the inclined hole of B, continue the through-hole that drill straight diameter is A, specifically: use diameter for the fluted drill of A, drill bit
Coated cutting tool is selected, the speed of mainshaft is controlled in 1000rev/min-2000rev/min, feed speed 30mm/min-60mm/
min。
7. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the step
(4) drill straight diameter is the thread Pilot hole of C, specifically:
The thread Pilot hole that diameter is C for the flat three pointed drills drill diameter of C is used, the speed of mainshaft is controlled in 1000rev/min-
2000rev/min, feed speed 30mm/min-60mm/min；
Step (5) the boring diameter is the counter sink of E, specifically:
Use boring cutter boring diameter for the counter sink of E, the speed of mainshaft is controlled in 1000rev/min-1500rev/min, feed speed
For 30mm/min-60mm/min.
8. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the step
(6) by lathe, the screw thread guiding for the threaded hole that diameter is D is attacked on the thread Pilot hole that diameter is C, specifically: it by diameter is D
Long guide tap be installed on machine tool chief axis, carry out tapping, only tap out is oriented to, and it is deep that tapping depth is no more than entire screw thread
The one third of degree.
9. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the step
(7) screw thread for the threaded hole that diameter is D is attacked by hand, specifically:
Selecting diameter is the short guide tap of D, and the mode of manual tapping is used to complete diameter as the tapping of the threaded hole screw thread of D.
10. a kind of drilling process of composite material metal inclined hole according to claim 1, it is characterised in that: the diameter A
<B<C<D<E。
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710127252.4A CN106881567B (en) | 2017-03-06 | 2017-03-06 | A kind of drilling process of composite material metal inclined hole |
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| CN201710127252.4A CN106881567B (en) | 2017-03-06 | 2017-03-06 | A kind of drilling process of composite material metal inclined hole |
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| CN106881567B true CN106881567B (en) | 2018-12-21 |
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| CN107755977A (en) * | 2017-09-22 | 2018-03-06 | 中国石油集团川庆钻探工程有限公司 | Method for processing inclined hole thread on special positioning disc of perforating gun |
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| CN102921985A (en) * | 2012-10-31 | 2013-02-13 | 西安航空动力股份有限公司 | Method for processing deep minipore with large gradient on difficult-to-process material |
| CN203292876U (en) * | 2013-06-25 | 2013-11-20 | 河北瑞丰动力缸体有限公司 | Multi-angle inclined hole rotary clamp for processing cylinder |
| CN103567487A (en) * | 2013-11-11 | 2014-02-12 | 中国南方航空工业(集团)有限公司 | Method for machining small-diameter inclined hole |
| CN103962599A (en) * | 2013-01-30 | 2014-08-06 | 成都科盛石油科技有限公司 | Table type drilling equipment with efficient, stable and safe functions |
| CN105269158A (en) * | 2015-11-20 | 2016-01-27 | 西安交通大学 | High-energy laser step-by-step machining method for cooling hole of turbine blade with thermal barrier coating |
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2017
- 2017-03-06 CN CN201710127252.4A patent/CN106881567B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61288940A (en) * | 1985-06-13 | 1986-12-19 | Mitsubishi Electric Corp | Formation of oblique hole |
| CN1161267A (en) * | 1995-09-14 | 1997-10-08 | 邵文远 | Compositions of metal-working machines |
| CN101670527A (en) * | 2009-09-30 | 2010-03-17 | 哈尔滨汽轮机厂有限责任公司 | Special fixture for processing inclined conical nozzle steam passage and method thereof |
| CN202219424U (en) * | 2011-07-27 | 2012-05-16 | 航天材料及工艺研究所 | Processing device for inclined holes of intersecting lines of C/E (carbon/epoxy) composite materials |
| CN102921985A (en) * | 2012-10-31 | 2013-02-13 | 西安航空动力股份有限公司 | Method for processing deep minipore with large gradient on difficult-to-process material |
| CN103962599A (en) * | 2013-01-30 | 2014-08-06 | 成都科盛石油科技有限公司 | Table type drilling equipment with efficient, stable and safe functions |
| CN203292876U (en) * | 2013-06-25 | 2013-11-20 | 河北瑞丰动力缸体有限公司 | Multi-angle inclined hole rotary clamp for processing cylinder |
| CN103567487A (en) * | 2013-11-11 | 2014-02-12 | 中国南方航空工业(集团)有限公司 | Method for machining small-diameter inclined hole |
| CN105269158A (en) * | 2015-11-20 | 2016-01-27 | 西安交通大学 | High-energy laser step-by-step machining method for cooling hole of turbine blade with thermal barrier coating |
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