CN109590520A - A method of improving annular casing external surface rough milling efficiency - Google Patents

A method of improving annular casing external surface rough milling efficiency Download PDF

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Publication number
CN109590520A
CN109590520A CN201811435560.4A CN201811435560A CN109590520A CN 109590520 A CN109590520 A CN 109590520A CN 201811435560 A CN201811435560 A CN 201811435560A CN 109590520 A CN109590520 A CN 109590520A
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China
Prior art keywords
cutting
annular casing
casing external
rough
milling
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CN201811435560.4A
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Chinese (zh)
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CN109590520B (en
Inventor
刘德生
李丹
郝卓
杨易
栗生锐
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AECC Shenyang Liming Aero Engine Co Ltd
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AECC Shenyang Liming Aero Engine Co Ltd
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Priority to CN201811435560.4A priority Critical patent/CN109590520B/en
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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B23MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23CMILLING
    • B23C3/00Milling particular work; Special milling operations; Machines therefor

Abstract

The invention belongs to mechanical manufacturing fields, and in particular to a method of improve annular casing external surface rough milling efficiency.Technical scheme is as follows: a method of annular casing external surface rough milling efficiency is improved, includes the following steps: 1) to use the small cutting way for cutting roomy feeding of big cutting-in, cutting tool selects D20R3 solid cemented carbide milling cutter;2) position among two boss of annular casing external surface carries out pre-slotting, and pre-slotting is width 27mm × long 38mm × radius 11mm racetrack structure, carries out milling using the spiral trajectory of racetrack shape;3) annular casing external surface is rough milled the type face stage, and every layer of cutting-in 24mm is arranged, and cutter cuts wide 1mm, and advance and retreat knife is arranged using 180 ° of semi arches, 10 ° of tilt angle of the helix of radius R3 in advance and retreat knife.The present invention can shorten the rough milling time under the premise of guaranteeing part processing quality, improve processing efficiency, reduce the cost of charp tool.

Description

A method of improving annular casing external surface rough milling efficiency
Technical field
The invention belongs to mechanical manufacturing fields, and in particular to a kind of side for improving annular casing external surface rough milling efficiency Method.
Background technique
Annular casing belongs to the typical part of aero-engine casing, and external surface is complicated, and woollen generally uses ring forging, material Material is the difficult-to-machine materials such as titanium alloy and high temperature alloy, and external surface machining allowance is larger, there is a problem of that processing efficiency is lower.
When implementing to rough mill on annular casing external surface, which is titanium alloy, casing outer diameter Φ 1184mm, casing Inner surface diameter Φ 1076mm is highly 116mm, and working position is narrow and relatively deep, and small cutting-in cuts greatly the cutting of the low feeding of width Mode is unfavorable for the processing of cutter, the width 38mm and depth 48mm of working position, has 16mm slot among working position, processing is wanted Cutter is asked to overhang greater than 48mm, existing scheme is processed using maize milling cutter ¢ 32R3 in depth higher slice, since centre has sky Slot and cutter overhanging are larger, and tool in cutting sword is uneven in processing, and tool wear seriously compares with more allowing blade replacement in process Frequently, cutting parameter processing efficiency is lower, and cutter consumption is larger.
Summary of the invention
The present invention provides a kind of method for improving annular casing external surface rough milling efficiency, guarantees part processing quality Under the premise of, the rough milling time can be shortened, improve processing efficiency, reduce the cost of charp tool.
Technical scheme is as follows:
A method of annular casing external surface rough milling efficiency is improved, is included the following steps:
1) the small cutting way for cutting roomy feeding of big cutting-in is used, cutting tool selects D20R3 solid cemented carbide milling cutter;
2) position among two boss of annular casing external surface carries out pre-slotting, and pre-slotting is width 27mm × long 38mm The racetrack structure of × radius 11mm carries out milling using the spiral trajectory of racetrack shape;
3) annular casing external surface is rough milled the type face stage, and every layer of cutting-in 24mm is arranged, and cutter cuts wide 1mm, and advance and retreat knife uses Advance and retreat knife is arranged in 180 ° of semi arches of radius R3,10 ° of tilt angle of helix, and the movement between withdrawing and feed uses straight line It fast moves.
The method of the described annular casing external surface rough milling efficiency of raising, in the step 2), pre-slotting milling work Skill parameter are as follows: speed of mainshaft 800rpm/min, the amount of feeding 500mm/min, total cutting depth 48mm, every layer of cutting-in 0.5mm.
The method of the described annular casing external surface rough milling efficiency of raising in the step 3), rough mills the type face stage Technological parameter are as follows: speed of mainshaft 680rpm/min, the amount of feeding 800mm/min, total cutting depth 48mm, every layer of cutting-in 24mm.
The invention has the benefit that
1, since in process, influence of the cutting speed to cutter life is maximum, followed by feed speed, cutting depth Minimum is influenced, the present invention uses the small cutting way for cutting roomy feeding of big cutting-in, in conjunction with the rigid of D20R3 solid cemented carbide milling cutter Property the long feature of good, cutting edge, reduce because empty slot and cutter overhang it is larger caused by influence so that tool in cutting sword is protected in processing Maintain an equal level weighing apparatus, mitigates blade abrasion, guarantees processing efficiency and reduces the cost of charp tool.
2, it is rough milling the type face stage, every layer of cutting-in 24mm is set, cutter cuts wide 1mm, and advance and retreat knife uses 180 ° of radius R3 Advance and retreat knife is arranged in semi arch, 10 ° of tilt angle of helix, and the movement between withdrawing and feed is fast moved using straight line, work Skill parameter are as follows: speed of mainshaft 680rpm/min, the amount of feeding 800mm/min, total cutting depth 48mm, every layer of cutting-in 24mm are protected Cutter is demonstrate,proved during the cutting process all in low cutting force state, reduces tool wear, improves processing efficiency and reduces the cost of charp tool.
Detailed description of the invention
Fig. 1 is annular casing external surface Working position schematic shapes;
Fig. 2 is pre-slotting process cutter path front schematic view;
Fig. 3 is pre-slotting process cutter path side schematic view;
Fig. 4 is to rough mill type face stage cutter path front schematic view;
Fig. 5 is to rough mill type face stage cutter path side schematic view.
In figure: 1 is annular casing, and 2 be working position, and 3 be pre-slotting, and 4 be cutting tool, and 5 be the feed of pre-slotting process Point, 6 be pre-slotting process cutter path, and 7 is rough mill type face stage feed point, and 8 be to rough mill type face stage cutter path.
Specific embodiment
A method of annular casing external surface rough milling efficiency is improved, is included the following steps:
1) the small cutting way for cutting roomy feeding of big cutting-in is used, cutting tool 4 selects golden aigret D20R3 whole hard alloy Milling cutter;
2) position among two boss of annular casing external surface carries out pre-slotting, and pre-slotting is width 27mm × long 38mm The racetrack structure of × radius 11mm carries out milling using the spiral trajectory of racetrack shape;Technological parameter are as follows: the speed of mainshaft 800rpm/min, the amount of feeding 500mm/min, total cutting depth 48mm, every layer of cutting-in 0.5mm;
3) annular casing external surface is rough milled the type face stage, and every layer of cutting-in 24mm is arranged, and cutter cuts wide 1mm, and advance and retreat knife uses Advance and retreat knife is arranged in 180 ° of semi arches of radius R3,10 ° of tilt angle of helix, and the movement between withdrawing and feed uses straight line It fast moves;Technological parameter are as follows: speed of mainshaft 680rpm/min, amount of feeding 800mm/min, total cutting depth 48mm, every layer Cutting-in 24mm.

Claims (3)

1. a kind of method for improving annular casing external surface rough milling efficiency, which comprises the steps of:
1) the small cutting way for cutting roomy feeding of big cutting-in is used, cutting tool selects D20R3 solid cemented carbide milling cutter;
2) position among two boss of annular casing external surface carries out pre-slotting, and pre-slotting is width 27mm × long 38mm × half The racetrack structure of diameter 11mm carries out milling using the spiral trajectory of racetrack shape;
3) annular casing external surface is rough milled the type face stage, and every layer of cutting-in 24mm is arranged, and cutter cuts wide 1mm, and advance and retreat knife uses radius Advance and retreat knife is arranged in 180 ° of semi arches of R3,10 ° of tilt angle of helix, and the movement between withdrawing and feed is quick using straight line It is mobile.
2. the method according to claim 1 for improving annular casing external surface rough milling efficiency, which is characterized in that described In step 2), pre-slotting milling process parameter are as follows: speed of mainshaft 800rpm/min, amount of feeding 500mm/min, total cutting depth 48mm, every layer of cutting-in 0.5mm.
3. the method according to claim 1 for improving annular casing external surface rough milling efficiency, which is characterized in that described In step 3), type face stage process parameter is rough milled are as follows: speed of mainshaft 680rpm/min, amount of feeding 800mm/min, total cutting are deep Spend 48mm, every layer of cutting-in 24mm.
CN201811435560.4A 2018-11-28 2018-11-28 Method for improving rough milling processing efficiency of outer surface of annular casing Active CN109590520B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201811435560.4A CN109590520B (en) 2018-11-28 2018-11-28 Method for improving rough milling processing efficiency of outer surface of annular casing

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Application Number Priority Date Filing Date Title
CN201811435560.4A CN109590520B (en) 2018-11-28 2018-11-28 Method for improving rough milling processing efficiency of outer surface of annular casing

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CN109590520B CN109590520B (en) 2020-05-01

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475843A (en) * 2014-11-07 2015-04-01 沈阳黎明航空发动机(集团)有限责任公司 Processing method for annular type engine-case radial narrow groove
CN105397425A (en) * 2015-12-11 2016-03-16 中国南方航空工业(集团)有限公司 Method for machining annular casing of aero-engine
CN106312159A (en) * 2016-11-17 2017-01-11 陕西高华知本化工科技有限公司 Fan wheel disc arc mortise machining method
CN107717029A (en) * 2017-11-24 2018-02-23 中国航发沈阳黎明航空发动机有限责任公司 A kind of opposite opened casing high-efficiency milling processing technology
CN107931678A (en) * 2017-11-24 2018-04-20 中国航发沈阳黎明航空发动机有限责任公司 A kind of half casing taper surface high speed milling method of high temperature alloy point

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104475843A (en) * 2014-11-07 2015-04-01 沈阳黎明航空发动机(集团)有限责任公司 Processing method for annular type engine-case radial narrow groove
CN105397425A (en) * 2015-12-11 2016-03-16 中国南方航空工业(集团)有限公司 Method for machining annular casing of aero-engine
CN106312159A (en) * 2016-11-17 2017-01-11 陕西高华知本化工科技有限公司 Fan wheel disc arc mortise machining method
CN107717029A (en) * 2017-11-24 2018-02-23 中国航发沈阳黎明航空发动机有限责任公司 A kind of opposite opened casing high-efficiency milling processing technology
CN107931678A (en) * 2017-11-24 2018-04-20 中国航发沈阳黎明航空发动机有限责任公司 A kind of half casing taper surface high speed milling method of high temperature alloy point

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
田晓龙等: "螺旋铣削在压气机盘卡圈槽上的应用", 《科技创新与应用》 *

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