CN110497152A - Casing deep hole processing method and its application - Google Patents
Casing deep hole processing method and its application Download PDFInfo
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- CN110497152A CN110497152A CN201910806234.8A CN201910806234A CN110497152A CN 110497152 A CN110497152 A CN 110497152A CN 201910806234 A CN201910806234 A CN 201910806234A CN 110497152 A CN110497152 A CN 110497152A
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- drill bit
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- brill
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
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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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Abstract
The invention discloses a kind of casing deep hole processing method and its application in magnalium casing deep hole machining, which includes: (S1) processing guide hole；(S2) deep hole pecks brill circulation；It includes: that control long drill bit first enters guide hole with the slow-speed of revolution that deep hole, which pecks brill circulation, from machining allowance, there are also when scheduled safe distance, revolving speed is increased to processing revolving speed to carry out pecking brill processing, peck every time and suspends the predetermined time after 1~2 times of bit diameter depth of every brill during boring, make the flow chip generated fracture and delivery port by the pause feeding of long drill bit, peck after boring scheduled depth every time, long drill bit is fallen back on into depths of boring predetermined from hell and carries out chip removal and cooling；Iterative cycles are directly processed to target depth.This method is pecked in deep hole bores in cyclic process using pause chip breaking, the position of control drill bit withdrawing, and long drill bit is guided and supported with guide hole, effectively prevents the beat of drill bit and the problem that chip removal is unsmooth, guarantees processing quality and stability.
Description
Technical field
The present invention relates to technical fields of mechanical processing, particularly, are related to a kind of deep hole processing method.In addition, the present invention is also
It is related to a kind of application of above-mentioned casing deep hole processing method in the processing of aero-engine magnalium casing.
Background technique
There is a large amount of deep hole in the large complicated magnalium casing of aero-engine, deep hole major diameter is bigger, and draw ratio reaches 12.5-
25, dimensional accuracy, surface roughness and position degree are more demanding, and the position degree relative to multiple benchmark cannot be greater than 0.2mm.
In existing processing method, when pecking brill cyclic process with deep hole, without disconnected in the depth of 2-3 times of bit diameter
Bits, aluminum-magnesium alloy material is softer, the flow chip of curling easy to form, and when drilling depth is shallower, chip can pass through drill bit
Helicla flute discharge, when being machined to 10 times of draw ratios or more, chip is easy to get lodged in helicla flute and can not be discharged, since factory is big
Equipment component does not have cold in high pressure, if iron filings are discharged not in time when processing, a large amount of iron filings are rested in the helicla flute of drill bit,
Drill bit is easily broken off.In order to which iron filings are discharged, each brill for needing reduction to peck brill is deep, repeatedly withdrawing, and the time of processing is longer, such as
The deep 400 long hole one Φ of processing 18 needs 4 hours on one large-scale magnalium casing, seriously affects processing efficiency.
Moreover, drill bit will exit aperture when each withdrawing chip removal, when drill bit rotates outside hole, apex point can be because of centrifugation
Power and shake, drill bit is longer, rigidity it is poorer, the range of shaking is bigger, and when being again introduced into aperture, position can occur partially
Pendulum, therefore position degree is difficult to ensure, the position degree to drill when drill bit beat is excessive can achieve 0.5mm, can also go out when serious
The quality problems of existing broken drill.
Factors above causes product passing rate of processing low, and repair rate is higher, and thus bring is repeatedly measured, changes a job, stopped
The increase of the management costs such as stagnant.Part is overstock in process, leads to equipment bottleneck, increases workshop management difficulty, retun product isolation
Treating capacity is big, and error rate increases, and brings larger hidden danger to production, quality management.
Summary of the invention
The present invention provides a kind of casing deep hole processing method and its in aero-engine magnalium casing deep hole machining
Using, to solve the problems, such as above-mentioned magnalium casing deep hole machining, effectively prevent the beat of drill bit and the problem that chip removal is unsmooth, protect
Processing quality and stability are demonstrate,proved, reduces withdrawing number and distance, improves the processing efficiency of almag casing deep hole.
According to an aspect of the present invention, a kind of casing deep hole processing method is provided, comprising the following steps: (S1) processing is drawn
Guide hole；
(S2) it carries out deep hole and pecks brill circulation；The deep hole pecks brill circulation
Control long drill bit first enters the guide hole with 30~50 revs/min of the slow-speed of revolution and swings to avoid the long drill bit
And make apex point offset bore center, there are also when scheduled safe distance, revolving speed is increased to processing revolving speed from machining allowance and is carried out
Peck brill,
Peck every time and suspend the predetermined time after 1~2 times of bit diameter depth of every brill during boring, passes through the temporary of the long drill bit
Stopping feeding be broken the flow chip generated and by the helicla flute delivery port in the long drill bit, pecks the scheduled depth of brill every time
After degree, the long drill bit is fallen back on into depths of boring predetermined from hell and carries out chip removal and cooling；Iterative cycles are directly processed to target
Depth.
Further, the pause predetermined time is 2~10 seconds.
Further, the depth of 1-3 times of bore diameter is in the predetermined depths of boring.
Further, described to peck 5-10 times for boring scheduled depth as long drill bit diameter every time.
Further, it carries out the deep hole to peck before boring circulation, further includes: measure the static rotation of long drill bit on tool setting gauge
Turn diameter and bounce, controls the bounce of long drill bit no more than 0.1mm.
Further, the processing guide hole includes: to mill out the guide hole, the depth of the guide hole using milling cutter spiral
Degree is 2-3 times of bore diameter depth.
Further, the diameter of the milling cutter is 0.5~0.8 times of the long drill bit diameter.
Further, after the processing guide hole, deep hole peck brill circulation before further include: with boring cutter process guide
Hole, it is ensured that the difference of the diameter of the diameter and long drill bit of the guide hole is not more than ± 0.02mm.
Further, the scheduled safe distance is 2~5mm.
According to another aspect of the present invention, a kind of above-mentioned casing deep hole processing method is additionally provided in aero-engine aluminium
Application in magnesium casing deep hole machining.
The invention has the following advantages:
Casing deep hole processing method of the invention, first processes guide hole, then using long drill bit peck brill circulation plus
Work deep hole, long drill bit first with the slow-speed of revolution enters guide hole it is possible to prevente effectively from long drill bit swings and makes apex point offset bore center, long
During drill bit pecks brill every time, suspends the predetermined time after pecking 1~2 times of bit diameter depth of brill every time, pass through the long drill bit
Pause feeding (idle running) is broken the flow chip generated and by the helicla flute delivery port in the long drill bit, pecks brill every time
After predetermined depth, long drill bit is retreated to be cooled down from long drill bit while carrying out chip removal at the predetermined depth of aperture, and this duration
The apex point of drill bit is not exit aperture, therefore hole wall can be very good to support long drill bit, prevents long drill bit from revolving in high speed
Occurs beat when turning, it is ensured that the position degree of the deep hole processed meets the requirements, and casing deep hole processing method of the invention is by moving back
It bores and pause carries out chip breaking and cooling, can be used for being not provided with machine tooling part deep-hole cold in high pressure.
The part of casing deep hole processing method processing of the invention, the qualification rate of deep hole reach 95% or more, overproof, return
It repairs, scrap and substantially reduce.The method reduce withdrawing number and withdrawing distance, 60% or more processing efficiency is improved, when processing not
There are the quality problems of Drill Crack, processing quality is reliable and stable.The position degree of the deep hole of this method processing can guarantee
0.1mm can satisfy the design requirement of aero-engine, can be generalized to other similar deep hole machinings, have wide answer
Use prospect.
Other than objects, features and advantages described above, there are also other objects, features and advantages by the present invention.
The present invention is further detailed explanation below.
Specific embodiment
The embodiment of the present invention is described in detail below, but the present invention can by it is following limit and cover it is more
Kind different modes are implemented.
The casing deep hole processing method of the present embodiment, comprising the following steps: (S1) processes guide hole；(S2) deep hole is carried out to peck
Bore circulation；Deep hole pecks brill circulation
Control long drill bit, which first enters guide hole with 30~50 revs/min of the slow-speed of revolution, makes apex point to avoid long drill bit swing
Revolving speed, there are also when scheduled safe distance, is increased to processing revolving speed and carries out pecking brill by offset bore center from machining allowance,
Peck every time and suspend the predetermined time after 1~2 times of bit diameter depth of every brill during boring, passes through the temporary of the long drill bit
Stopping feeding be broken the flow chip generated and by the helicla flute delivery port in the long drill bit, pecks the scheduled depth of brill every time
After degree, the long drill bit is fallen back on into depths of boring predetermined from hell and carries out chip removal and cooling；Iterative cycles are directly processed to target
Depth.
For being not provided with lathe cold in high pressure, if chip is discharged not in time when processing, a large amount of chip is rested on
In the helicla flute of drill bit, drill bit is easily broken off, and pecks the processing that driller's skill is usually used in deep hole, because being conducive to chip breaking and chip removal, this
The casing deep hole processing method of invention, first processes guide hole, then peck using long drill bit and bores cyclic process deep hole, jumping chisel
Head can choose the long drill bit of fluted drill or other hard alloy materials, and long drill bit, which first enters guide hole with the slow-speed of revolution, to be had
Effect avoids long drill bit from swinging and make apex point offset bore center, and during long drill bit pecks brill every time, it is straight to peck 1~2 times of drill bit of brill every time
Suspend the predetermined time after diameter depth, be broken the flow chip generated by the pause feeding (idle running) of the long drill bit and pass through
Helicla flute delivery port in the long drill bit, peck every time bore predetermined depth after, long drill bit retreat to from the predetermined depth of aperture into
Long drill bit is cooled down while row chip removal, and the apex point of long drill bit is not exit aperture, therefore hole wall can be at this time
Long drill bit is supported well, prevents long drill bit from occurring beat when rotating at high speed, it is ensured that the position degree of the deep hole processed accords with
It closes and requires, casing deep hole processing method of the invention carries out chip breaking and cooling by moving back brill and pause, can be used for being not provided with
Cold machine tooling part deep-hole in high pressure.
In the present embodiment, deep hole pecks brill and circulates in numerically-controlled machine tool using customization macroprogram completion.The included depth of numerically-controlled machine tool
Brill circulation is pecked in hole, and when cutter withdrawing can exit aperture completely, and cutter is easy to shake outside hole, and multiple feed leads to drill bit beat,
Each feed is too deep, and due to not having chip breaking instruction, cutter chip removal is unsmooth to be easy to squeeze off on drill bit, how to control drill bit withdrawing and
Chip breaking is the key that improve the efficiency and quality of gun drilling.The deep hole of the present embodiment, which is pecked to bore to recycle, uses the macroprogram of customization complete
At, control long drill bit withdrawing does not exit aperture, but falls back on from hell predetermined depth, the support of long drill bit is done with hole wall,
It can prevent long drill bit beat.And pause instruction is set in drilling and carries out chip breaking, preventing cutter from twining bits leads to Drill Crack.It bores
It is deeper, macroprogram according to the establishment of the characteristic of deep hole machining it is following (wherein parameter is merely illustrative, can according to practical application into
The adjustment of row parameter):
(T42 ZT D=8)
N01 T42
N02 M6
N03 #12=1000
N04 G00G90G54X-46.327Y37.5B198.S30M3
N05 G43H01Z400.M7
N06 B198
(MSG,PAGE4 F1 S17)
N07 Z300.M08
N08 G1Z160.F3000
N09 G01Z129.9F500
N10 #1=8. (TOOL DIAMETER) ... ... ... ... ... ... (cutter diameter)
N11 #2=-41.1 (DEPTH) ... ... ... ... ... ... ... (ultimate depth)
N12 #3=0.8 (ONE TOOL DIAMETER) ... ... ... ... (pecking drilling depth coefficient)
N13 #4=#3*#1 (GROUP DEPTH) ... ... ... ... ... (every group of brill is deep)
N14 #5=129.9 (R PLANE) ... ... ... ... ... ... ... (safe altitude)
N15 #6=127.9 (WORK PLANE) ... ... ... ... ... (overhead height)
N16 #11=#6-#4 (RETRACT POSITION) ... ... ... ... (retract height)
N17 #8=#6 (FIRST DRILL DEPTH) ... ... ... ... ... (first time drilling depth)
N18 #10=#6 ... ... ... ... ... ... ... ... ... (pecks drilling depth)
N19 #13=[1/ [#12/60.]] (DWELL TIME) ... ... ... ... (time out carries out chip breaking)
N20 G0Z#5 ... ... ... ... ... ... ... ... ... ... (moves to safe altitude)
N21 WHILE [#10GE#2] DO1 ... ... ... ... ... ... (Z value and ultimate depth ratio of calculating
Compared with satisfaction then executes circulation, is unsatisfactory for, jumps out circulation)
N22 #9=1. (EVERY STEP) ... ... ... ... ... ... ... (setting of chip breaking depth)
N23 S#12M03
N24 G1Z [#8+#9+0.3] F5000. ... ... ... ... ... ... (is moved quickly into and is prepared processing
Depth)
N25 WHILE[#8GE#10]DO2
N26 G1Z#8F100. ... ... ... ... ... ... ... ... (is machined to peck drilling depth)
N27 G04X#13 ... ... ... ... ... ... ... ... ... (pause carries out chip breaking)
N28 G1Z[#8+0.2]F3000.
N29 #8=#8-#9
N30 END2
N31 IF [#8GT#11] THEN#7=#8+#9+0.3
N32 IF [#8LE#11] THEN#7=#11
N33 G1Z139.F5000.
N34 #10=#10-#4
N35 END1
N36 G1Z[#8+#9+0.3]F3000.
N37 WHILE[#8GE#2]DO2
N38 G1Z#8F100.
N39 G04X#13
N40 G1Z[#8+0.2]F3000.
N41 #8=#8-#9
N42 END2
N43 G1Z#2F100.
N44 G04X#13
N45 G0Z#5
N46 S30
N47 Z400.
In above-mentioned macroprogram, this coefficient can be adjusted according to part material, cutter diameter by pecking drilling depth coefficient, work as part
When material difficulty is processed, this coefficient can be reduced, guarantees processing quality, this coefficient can be improved when material is softer, as high temperature closes
The drilling depth coefficient of pecking of gold is generally set to 0.5~0.8, and almag is generally set to 1~1.5 according to rigidity.The setting of chip breaking depth,
This depth is set in pecking drilling depth, multiple chip breaking within the scope of drilling depth can pecked, prevent drilling cuttings from twining onto drill bit, cause to bore
Head rupture.
Parametrization processing customization is realized using macroprogram, it is with the following functions: 1, by deep hole machining according to pore size reality
Incumbent meaning step driling, and step driling can be continued in section, and effectively control the size of chip；2, deep hole machining may be implemented
Effective chip breaking, prevents chip from winding, and squeezes off drill bit；3, effective chip breaking may be implemented in deep hole machining, and realizes the ginseng of withdrawing position
Numberization.
It is wherein preferred, make a reservation for bore the depth that depths is 1-3 times of bore diameter.If drill bit withdrawing exits aperture, drill bit
Beat can occur under high speed rotation, lead to the positional shift of drilling, broken drill is also resulted in when serious；If drill bit move back away from
Short from too, drill bit largely also stays in hole, and a large amount of chip will be accumulated in helicla flute to be discharged in time, also held very much in this way
Easily lead to broken drill.It selects long drill bit withdrawing to the depth of 1~3 times of bore diameter, had both reduced withdrawing distance, aperture can be made
Play the role of supporting guide to drill bit, prevents drill bit from occurring beat when rotating at high speed, it is ensured that the position degree of the deep hole of processing,
It can guarantee that chip is discharged in time, improves processing efficiency again, extend the service life of drill bit.
It is wherein preferred, peck 5-10 times for boring scheduled depth as long drill bit diameter every time.Peck the depth of brill foundation be
One balance of processing efficiency and processing quality, the purpose for pecking brill is that processing overheat generates built-up edge influence to placement apex point for a long time
Processing quality.A large amount of chips can be discharged by withdrawing, different Material Processings, the depth for pecking brill is not also identical, more
Hard material, apex point easier fever fatigue when processing, it is desirable to reduce peck the depth of brill, generally 1~3 times of draw ratio just needs
Withdrawing, aluminum-magnesium alloy material is softer, and cutting temperature is lower, when pecking brill cyclic process with deep hole, in the depth of 2-3 times of bit diameter
There is no chip breaking, the flow chip of curling easy to form, when drilling depth is shallower, chip can be arranged by the helicla flute of drill bit
Out, when being machined to 10 times of draw ratios or more, chip is easy to get lodged in helicla flute and can not be discharged, casing deep hole machining of the invention
Method, the depth for pecking brill every time is preferably 5~10 times of bit diameters, has both reduced the withdrawing during entire deep hole machining
Number, improves deep hole machining efficiency, and can guarantee that chip excludes helicla flute in time, prevents drill bit from squeezing off.
It in the present embodiment, carries out deep hole and pecks before boring circulation, further includes: measure the static rotation of long drill bit on tool setting gauge
Diameter and bounce control the bounce of long drill bit no more than 0.1mm.The beating degree of long drill bit is bigger, and beat is bigger when drill bit rotates,
Requirement cannot be reached by being easy to cause the position degree of drilling, therefore, in order to ensure being not more than the position degree of 0.2mm, peck brill in deep hole
Before circulation, static rotating diameter and the bounce of long drill bit are measured on tool setting gauge, the bounce for controlling long drill bit is not larger than
0.1mm。
In the present embodiment, processing guide hole includes: to mill out guide hole using milling cutter spiral, and the depth of guide hole is 2~3 times
Bore diameter depth.The diameter of milling cutter is 0.5~0.8 times of long drill bit diameter.Guide hole is to play support drill bit, prevent drill bit
Beat, the effect for improving processing rigidity cannot function well as the effect of guidance, drill bit if guide hole Working position degree is poor
It easily snaps off, if the depth of guide hole is too long, will affect drill bit chip removal, it is too short, supporting guide effect is not had, therefore
It is preferred that the depth of guide hole is 2~3 times of bore diameter depth.And the surface quality and position degree of helical milling are superior to commonly bore
Head can be mended using spiral Milling Machining guide hole by adjusting knife, control the size in aperture, and can according to the size of drill bit,
The pore size for adjusting processing, keeps guide hole closer in conjunction with drill bit, to improve the effect of guide hole.If the diameter of milling cutter
It selects too big, is equivalent to buried via hole, the bad adjustment of aperture size, if selecting too small, the enlarged diameter of spiral will affect processing effect
Rate.The diameter of selection milling cutter is slightly less than bit diameter, is 0.5~0.8 times of bit diameter, the guide hole milled out is slightly less than drilling
Diameter not only can guarantee processing efficiency, but also facilitate adjustment oriented diameter, and guide hole is made to function well as guidance and support long drill bit
Effect, guarantee that deep hole pecks going on smoothly for brill.
It is wherein preferred, after process guide hole, before deep hole pecks brill circulation further include: with boring cutter processing guide hole,
Ensure that the difference of the diameter of guide hole and the measurement diameter of long drill bit is not more than 0.02mm.Guide hole is guided and is propped up to long drill bit
Support, prevents drill bit beat, if guide hole is too big, will not have the effect of support, guide hole is too small, and drill bit enters guide hole
When, it can be worked into guide hole, due to long drill bit poor rigidity, if machining allowance is big, is easy drill bit squeezing deformation, influences deep hole and add
The effect of work, using boring cutter processing guide hole ensure guide hole be worked into it is 0.02mm bigger than long drill bit diameter within, can guarantee
The precision and processing efficiency of drilling, reduction is overproof, reprocesses and scraps, and extends the service life of drill bit.
Wherein preferred, scheduled safe distance is 2~5mm.The stop position that drill bit is quickly cut when safe distance, so
It is moved afterwards in safe distance with the jog speed processed, set safe distance to 2 on parts processing surface~
5mm, this height are not to be worked into part, i.e., drill bit be in dry running, if safe distance is arranged too long, empty knife
Time is just grown, and safe distance is too short, and drill bit may bump against piece surface with the speed fed fastly, is considering safety and efficiency
Under the premise of safe distance is selected as 2~5mm.
Wherein preferred, the pause predetermined time is 2~10 seconds.Time out be in order to allow drill bit to dally in deep hole, into
To stopping, chip fracture is discharged quickly from the helicla flute of drill bit, if time out is arranged too short, chip can not be complete
Discharge, drill bit are easy to twine bits, can squeeze off drill bit when serious, if being arranged too long, chip is drained, and drill bit is also dallying,
Processing efficiency is influenced, by test, time out was arranged at 2~10 seconds, proper.
The present invention also provides a kind of above-mentioned casing deep hole processing method answering in the processing of aero-engine magnalium casing
With.
There is a large amount of deep hole in the large complicated magnalium casing of aero-engine, deep hole major diameter is bigger, and draw ratio reaches 12.5-
25, the position degree relative to multiple benchmark cannot be greater than 0.2mm, the position degree of the deep hole of deep hole processing method processing of the invention
It can guarantee 0.1mm, can satisfy the design requirement of aero-engine.
Embodiment 1
The preferred embodiment of the present invention provides a kind of casing deep hole processing method, could be used without numerical control machine cold in high pressure
The deep hole of the magnalium casing of bed processing aero-engine, the diameter 18mm of deep hole, length 400mm, draw ratio 22.22, including
Following steps:
A) milling cutter of 0.7 times of bit diameter is used, spiral mills out the guide hole of 2 times of bore diameter depth.
B) static rotating diameter and the bounce of long drill bit are measured on tool setting gauge, it is ensured that the bounce of long drill bit is not more than
0.1mm。
C) guide hole is processed with boring cutter, the measurement diameter difference of the diameter and long drill bit that guarantee this guide hole is no more than positive and negative
0.02。
D) brill circulation is pecked using the deep hole that customization macroprogram replaces numerically-controlled machine tool to carry, process control long drill bit is first with 30-
50 revs/min of the slow-speed of revolution enters guide hole, from machining allowance, there are also when the safe distance of 3mm, revolving speed is increased to processing and turns
Speed, processing revolving speed are 600~2500 revs/min, and the depth for pecking brill every time is 5 times of bit diameters, deep in the brill of 1 times of bit diameter
Place's setting pause instruction, drill bit were broken flow chip and pass through helicla flute delivery port in this depth pause 2-10 seconds.Every time
After pecking the depth for boring 5 times of bit diameters, long drill bit retreats to the 2 times of bore diameter depths in aperture and carries out chip removal and cooling, then into
Row pecks brill next time, and iterative cycles are directly processed to ultimate depth.
Traditional deep hole cyclic process method, processing a diameter is 18mm, the depth of length 400mm (draw ratio 22.22)
Hole, processing, which pecks drilling depth and is set as 1~3 times of bit diameter (18~54mm), must just exit aperture chip removal, process a part
4 hours are needed, and uses processing method of the invention, pecking drilling depth can be set to 90mm, and every 18mm is set in pecking drilling depth
The process for setting pause chip breaking chip removal in 2~10 seconds is pecked and is cooled down at ability withdrawing to the position from aperture 36mm after boring 90mm
And chip removal reduces the time of a large amount of withdrawing feeds, when reducing the processing of deep hole compared to traditional deep hole cyclic process method
Between, processing a part only needs 55 minutes.Using the present embodiment method process part, the qualification rate of deep hole reach 95% with
On, it is overproof, reprocess, scrap and substantially reduce.The method reduce withdrawing number, 60% or more processing efficiency is improved, when processing not
There are the quality problems of breaking of rod head, processing quality is reliable and stable.The position degree of the deep hole of this method processing can guarantee 0.1mm,
The surface quality processed is good, visually observes less than apparent shake line, and roughness can achieve 1.6, can satisfy aviation hair
The design requirement of motivation can be generalized to other similar deep hole machinings, have broad application prospects.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of casing deep hole processing method, comprising the following steps:
(S1) guide hole is processed；
(S2) it carries out deep hole and pecks brill circulation；
It is characterized in that,
The deep hole pecks brill circulation
It controls long drill bit and the guide hole is first entered to avoid the long drill bit is swung and is made with 30~50 revs/min of the slow-speed of revolution
Revolving speed, there are also when scheduled safe distance, is increased to processing revolving speed and carries out pecking brill by apex point offset bore center from machining allowance,
Peck every time and suspend the predetermined time after 1~2 times of bit diameter depth of every brill during brill, by the pause of the long drill bit into
To be broken the flow chip generated and by the helicla flute delivery port in the long drill bit, peck the scheduled depth of brill every time
Afterwards, the long drill bit is fallen back on into depths of boring predetermined from hell and carries out chip removal and cooling；Iterative cycles are directly processed to target depth
Degree.
2. casing deep hole processing method according to claim 1, which is characterized in that
The pause predetermined time is 2~10 seconds.
3. casing deep hole processing method according to claim 1, which is characterized in that
The depth of 1-3 times of bore diameter is in the predetermined depths of boring.
4. casing deep hole processing method according to claim 1, which is characterized in that
It is described to peck 5-10 times for boring scheduled depth as long drill bit diameter every time.
5. casing deep hole processing method according to claim 1, which is characterized in that
The deep hole is carried out to peck before boring circulation, further includes: static rotating diameter and the bounce of long drill bit are measured on tool setting gauge,
The bounce for controlling long drill bit is not more than 0.1mm.
6. casing deep hole processing method according to any one of claims 1 to 5, which is characterized in that
The processing guide hole includes: to mill out the guide hole using milling cutter spiral, and the depth of the guide hole is 2-3 times and drills
Diameters deep.
7. a kind of casing deep hole processing method according to claim 6, which is characterized in that
The diameter of the milling cutter is 0.5~0.8 times of the long drill bit diameter.
8. a kind of casing deep hole processing method according to claim 6, which is characterized in that
After the processing guide hole, deep hole peck brill circulation before further include: with boring cutter process guide hole, it is ensured that the guidance
The difference of the diameter of the diameter and long drill bit in hole is not more than ± 0.02mm.
9. a kind of casing deep hole processing method according to any one of claims 1 to 5, which is characterized in that
The scheduled safe distance is 2~5mm.
10. a kind of casing deep hole processing method according to any one of claims 1 to 9 is deep in aero-engine magnalium casing
Application in hole machined.
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168324A (en) * | 2020-03-16 | 2020-05-19 | 沈阳飞机工业（集团）有限公司 | Drilling method for AF1410 steel part after quenching |
| CN111515433A (en) * | 2020-05-11 | 2020-08-11 | 山西平阳重工机械有限责任公司 | Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine |
| CN111531388A (en) * | 2020-06-19 | 2020-08-14 | 保定天威保变电气股份有限公司 | Method for processing insulation slot of transformer core pulling plate and special combined tool thereof |
| CN111673143A (en) * | 2020-05-29 | 2020-09-18 | 中国航发南方工业有限公司 | Method for machining precise deep hole by automatic compensation cutting of vibration reduction tool and casing |
| CN111774605A (en) * | 2020-06-30 | 2020-10-16 | 中船动力有限公司 | Deep hole drilling method on diesel engine frame |
| CN112008101A (en) * | 2020-07-16 | 2020-12-01 | 上海航天精密机械研究所 | Drilling method for ultra-deep long hole |
| CN112247647A (en) * | 2020-09-28 | 2021-01-22 | 中国第一汽车股份有限公司 | Chip breaking method for solving long aluminum chips generated by machining |
| CN112247217A (en) * | 2020-11-18 | 2021-01-22 | 浙江万丰奥威汽轮股份有限公司 | Chip breaking method for drilling machine |
| CN112372024A (en) * | 2020-08-27 | 2021-02-19 | 沈阳富创精密设备股份有限公司 | Method for machining deep hole with diameter more than 30 times by using inner-cooling drill bit |
| CN112453461A (en) * | 2020-11-30 | 2021-03-09 | 域鑫科技（惠州）有限公司 | Machining process for inner hole of workpiece |
| CN112621106A (en) * | 2020-12-29 | 2021-04-09 | 中国航发湖南南方宇航工业有限公司 | Groove machining method |
| CN114131289A (en) * | 2021-12-08 | 2022-03-04 | 中国航发南方工业有限公司 | Ring groove processing method of high-temperature alloy casing |
| CN114871697A (en) * | 2022-05-06 | 2022-08-09 | 中国第一汽车股份有限公司 | Machining method for deep-cavity special-shaped sensor hole of cast iron cylinder cover |
| CN114871474A (en) * | 2022-06-07 | 2022-08-09 | 杭州大天数控机床有限公司 | Automatic chip breaking method for intelligent drilling of machine tool |
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Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111168324A (en) * | 2020-03-16 | 2020-05-19 | 沈阳飞机工业（集团）有限公司 | Drilling method for AF1410 steel part after quenching |
| CN111515433A (en) * | 2020-05-11 | 2020-08-11 | 山西平阳重工机械有限责任公司 | Method for machining deep hole on stainless steel part by numerical control deep hole drilling machine |
| CN111673143A (en) * | 2020-05-29 | 2020-09-18 | 中国航发南方工业有限公司 | Method for machining precise deep hole by automatic compensation cutting of vibration reduction tool and casing |
| CN111673143B (en) * | 2020-05-29 | 2021-06-18 | 中国航发南方工业有限公司 | Method for machining precise deep hole by automatic compensation cutting of vibration reduction tool and casing |
| CN111531388A (en) * | 2020-06-19 | 2020-08-14 | 保定天威保变电气股份有限公司 | Method for processing insulation slot of transformer core pulling plate and special combined tool thereof |
| CN111774605A (en) * | 2020-06-30 | 2020-10-16 | 中船动力有限公司 | Deep hole drilling method on diesel engine frame |
| CN112008101A (en) * | 2020-07-16 | 2020-12-01 | 上海航天精密机械研究所 | Drilling method for ultra-deep long hole |
| CN112372024A (en) * | 2020-08-27 | 2021-02-19 | 沈阳富创精密设备股份有限公司 | Method for machining deep hole with diameter more than 30 times by using inner-cooling drill bit |
| CN112247647A (en) * | 2020-09-28 | 2021-01-22 | 中国第一汽车股份有限公司 | Chip breaking method for solving long aluminum chips generated by machining |
| CN112247217A (en) * | 2020-11-18 | 2021-01-22 | 浙江万丰奥威汽轮股份有限公司 | Chip breaking method for drilling machine |
| CN112453461A (en) * | 2020-11-30 | 2021-03-09 | 域鑫科技（惠州）有限公司 | Machining process for inner hole of workpiece |
| CN112621106A (en) * | 2020-12-29 | 2021-04-09 | 中国航发湖南南方宇航工业有限公司 | Groove machining method |
| CN112621106B (en) * | 2020-12-29 | 2022-02-15 | 中国航发湖南南方宇航工业有限公司 | Groove machining method |
| CN114131289A (en) * | 2021-12-08 | 2022-03-04 | 中国航发南方工业有限公司 | Ring groove processing method of high-temperature alloy casing |
| CN114871697A (en) * | 2022-05-06 | 2022-08-09 | 中国第一汽车股份有限公司 | Machining method for deep-cavity special-shaped sensor hole of cast iron cylinder cover |
| CN114871474A (en) * | 2022-06-07 | 2022-08-09 | 杭州大天数控机床有限公司 | Automatic chip breaking method for intelligent drilling of machine tool |
| CN114871474B (en) * | 2022-06-07 | 2024-03-19 | 杭州大天数控机床有限公司 | Method for automatically breaking chips in intelligent drilling of machine tool |
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