CN108480930B - A kind of processing method of low-pressure compressor casing - Google Patents
A kind of processing method of low-pressure compressor casing Download PDFInfo
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- CN108480930B CN108480930B CN201810322337.2A CN201810322337A CN108480930B CN 108480930 B CN108480930 B CN 108480930B CN 201810322337 A CN201810322337 A CN 201810322337A CN 108480930 B CN108480930 B CN 108480930B
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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 present invention relates to a kind of processing methods of low-pressure compressor casing, comprising the following steps: the first step, blank inspection: second step, vehicle benchmark；Third step, spinning: carrying out draw spinning for blank using strength cnc spinning machine, obtains the workpiece of wall thickness δ and roundness control within 0.1mm, and a small amount of surplus is reserved for subsequent machining in both ends；Cleaning: 4th step the lubricant of piece surface is cleaned up；5th step, heat treatment: spinning stress is eliminated in heat treatment；6th step, smart car front end and rear end: the 7th step bores boring both ends end-face hole: the 8th step, punching press blade profile slot: rushing blade profile slot and refine for workpiece is radial equidistant using numerical control press, guarantees blade profile groove location degree 0.2mm, blade profile channel profiles degree 0.05mm；9th step, Magnetic testing；Tenth step is examined, storage.The present invention can satisfy casing Deformation control, quality control on the surface, cost control requirement.
Description
Technical field
The present invention relates to aero-engines, and in particular to a kind of processing method of low-pressure compressor casing.
Background technique
Current aerospace engine low-pressure compressor casing is processed using turning+milling method, and removal surplus is larger,
Workpiece residualinternal stress is big, causes workpiece deformation larger, while being easy to produce fine defects-fine fisssure through casing processing rear surface
Line, while turning and milling higher cost.
" a kind of opposite opened casing high-efficiency milling processing technology " disclosed in CN 107717029A, is walked using cycloid milling
Cutter track diameter, big cutting-in, it is small cut it is wide, feed technological parameter, step fastly are as follows: high-efficiency milling tool-path planning；Using big cutting-in, small cut
Wide, roughing feed speed mode, Optimizing Cutting Conditions；High-efficiency milling tool-path planning include: selection helix feed, cycloid open it is pre-
The feed path of processing groove；The feed path for selecting cycloid reciprocal；Arc transition is used between cycloid, avoids right-angled bend.It should
Method be applied in Split Casing in Aeroengine outer mold surface Milling Machining using cycloid feed path, big cutting-in, it is small cut it is wide,
The processing method fed fastly is applied in Split Casing external form Milling Machining using the long advantage of tool blade, is improved cutter and is utilized
Rate realizes the high-efficient milling of Split Casing, improves processing efficiency in terms of reducing cost and improving processing efficiency.
A kind of " the aluminium alloy thin-walled revolving body spinning processing method " of CN 105537449B bulletin authorization, production require ruler
Very little aluminum alloy rotary green compact material makes annealing treatment aluminum alloy rotary green compact material；Shear spinning Cheng Yici conically shaped；To a conically shaped
It is made annealing treatment, and cuts big end process allowance and form secondary conically shaped；By secondary conically shaped conventional spinning on spinning machine
At pre- aluminium alloy thin-walled revolving body；The green compact material that will prewhirl carries out annealing and surface polishing treatment, is then cut using plasma
Cutting mill cuts the process allowance at spinning part both ends, obtains the aluminium alloy thin-walled revolving body for meeting technique requirement.Utilize shear spinning
It is processed into aluminium alloy thin-walled revolving body with conventional spinning technology, meets the size and structural performance requirements of bullet shell, Ke Yiqu
For machine addition and punch wellding method, a kind of inexpensive, efficient processing method is provided for the processing of bullet Al-alloy casing.But
The spinning processing method can't be directly used in manufacture aeroengine compressor casing.
Therefore, it is necessary to explore a kind of new technique, it is smaller to produce deformation, and quality is higher and lower-cost low pressure
Compressor casing.
Summary of the invention
It is an object of that present invention to provide a kind of processing method of low-pressure compressor casing, can satisfy casing Deformation control,
Quality control on the surface, cost control requirement.
To achieve the above object, the scheme that the present invention uses is as follows:
A kind of processing method of low-pressure compressor casing, comprising the following steps:
The first step, blank inspection: blank material is D6AC high strength steel, and 800 DEG C of heat preservation 2-3h annealing detect blank workpiece
Size, surface roughness and test tensile strength；
Second step, vehicle benchmark: using numerical control vertical lathe Vehicle Processing blank workpiece benchmark, guarantees datum level flatness 0.05mm
(millimeter)；
Third step, spinning: the first clamping mold on strength cnc spinning machine, and lubricant is smeared, later by blank workpiece
It is mounted on mold and carries out gradually spinning by the numerical control program of setting, obtain the work of wall thickness δ and roundness control within 0.1mm
A small amount of surplus is reserved for subsequent machining in part, both ends；Using drawing bowl-type spinning roller, 30 ° of established angle, two passages are revolved
Pressure, the first passage spinning reduction 60%, spinning machine speed of mainshaft 20r/min, feed rate 1mm/r；Annealing destressing is carried out later
Processing, 500 DEG C of annealing temperature, the second passage be final spinning, spinning reduction 35%, spinning machine speed of mainshaft 20r/min, into
Give rate 0.4mm/r；
Cleaning: 4th step by the lubricant on 1 surface of workpiece and dirty is cleaned up with acetone；It is done for next step heat treatment
It is good to prepare；
5th step, heat treatment: carry out modifier treatment to the workpiece after spinning, quenching: 850 DEG C, 15min, oil is cold；Tempering:
600 DEG C, oil is cold；
6th step, smart car front end and rear end: the upper end of Vehicle Processing workpiece, installation side, seam allowance reserve 1.5mm's at coating
Surplus is processed for subsequent component, and guarantee diameter tolerance is within ± 0.1mm, total high tolerance+0.10mm, circumference are beated freely
0.1mm under state；
7th step bores boring both ends end-face hole: boring both ends end face bolt through-hole, guarantees position degree φ 0.2mm, both ends of the surface are angular
PRECISION HOLE is positioned, guarantees position degree φ 0.05mm；
Punching press blade profile slot: 8th step by clamping mould on numerical control press, workpiece is mounted on cavity plate, utilizes numerical control
Punching machine is radial equidistant on workpiece to rush blade profile slot 2 and refine, guarantees 2 position degree 0.2mm of blade profile slot, blade profile channel profiles degree
0.05mm；Aperture is removed by pincers worker sand paper simultaneously and remains burr, but retains sharp side, 0.075 δ mm of Dies ' Blanking gap；
Magnetic testing: 9th step detects surface and the near surface flaw of workpiece；It is not allow for crackle, hairline and dotted miscellaneous
Matter；
Tenth step, examines, storage: workpiece is tested by design drawing requirement, carries out package storage later and is used for component
It is mating；
For the present invention compared to the processing method of traditional aeroengine compressor casing, advantage is as follows:
A. in terms of quality:
Due to manufacturing casing using spinning process, material organizes further refinement after squeezing flowing, finer and close, than
Forging intensity is higher before；Workpiece through spinning, chipping allowance is few, and part cutting stress is smaller, deforms smaller；What punching was formed
Blade profile slot consistency is preferable, and efficiency is higher.
B. in terms of cost:
In terms of blank: spinning blank adds smaller with blank relative to machine, and cost is relatively low；
Production efficiency: spinning+punching adds the period shorter relative to machine, and processing charges is low, high-efficient.
Detailed description of the invention
Fig. 1 is process flow chart of the invention；
Fig. 2 is the structural schematic diagram of casing；
Fig. 3 is the A of Fig. 2 to partial schematic diagram；
Fig. 4 is the axonometric drawing of the casing through machine-shaping of the present invention.
In figure: 1-casing, 2-blade profile slots.
Specific embodiment
Following further describes the present invention with reference to the drawings.
Referring to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, a kind of processing method of low-pressure compressor casing, comprising the following steps:
The first step, blank inspection: blank material is D6AC high strength steel, and 800 DEG C of heat preservation 2-3h annealing detect blank workpiece
Size, surface roughness and test tensile strength；
Second step, vehicle benchmark: using numerical control vertical lathe Vehicle Processing blank workpiece benchmark, guarantees datum level flatness 0.05mm
(millimeter)；
Third step, spinning: the first clamping mold on strength cnc spinning machine, and lubricant is smeared, later by blank workpiece
It is mounted on mold and carries out gradually spinning by the numerical control program of setting, obtain the work of wall thickness δ and roundness control within 0.1mm
A small amount of surplus is reserved for subsequent machining in part, both ends；Using drawing bowl-type spinning roller, 30 ° of established angle, two passages are revolved
Pressure, the first passage spinning reduction 60%, spinning machine speed of mainshaft 20r/min, feed rate 1mm/r；Annealing destressing is carried out later
Processing, 500 DEG C of annealing temperature, the second passage be final spinning, spinning reduction 35%, spinning machine speed of mainshaft 20r/min, into
Give rate 0.4mm/r；
Cleaning: 4th step by the lubricant on 1 surface of workpiece and dirty is cleaned up with acetone；It is done for next step heat treatment
It is good to prepare；
5th step, heat treatment: carry out modifier treatment to the workpiece after spinning, quenching: 850 DEG C, 15min, oil is cold；Tempering:
600 DEG C, oil is cold；
6th step, smart car front end and rear end: the upper end of Vehicle Processing workpiece, installation side, seam allowance reserve 1.5mm's at coating
Surplus is processed for subsequent component, and guarantee diameter tolerance is within ± 0.1mm, total high tolerance+0.10mm, circumference are beated freely
0.1mm under state；
7th step bores boring both ends end-face hole: boring both ends end face bolt through-hole, guarantees position degree φ 0.2mm, both ends of the surface are angular
PRECISION HOLE is positioned, guarantees position degree φ 0.05mm；
Punching press blade profile slot: 8th step by clamping mould on numerical control press, workpiece is mounted on cavity plate, utilizes numerical control
Punching machine is radial equidistant on workpiece to rush blade profile slot 2 and refine, guarantees 2 position degree 0.2mm of blade profile slot, blade profile channel profiles degree
0.05mm；Aperture is removed by pincers worker sand paper simultaneously and remains burr, but retains sharp side, 0.075 δ mm of Dies ' Blanking gap；
Magnetic testing: 9th step detects surface and the near surface flaw of workpiece；It is not allow for crackle, hairline and dotted miscellaneous
Matter；
Tenth step, examines, storage: workpiece is tested by design drawing requirement, carries out package storage later and is used for component
It is mating；
Process above method be related to using strength cnc spinning machine (model: ZENN-160CNC), numerical control press (model:
ALD-200), special equipments and the tooling such as spinning mold and indexing fine blanking die.
Claims (1)
1. a kind of processing method of low-pressure compressor casing, comprising the following steps:
The first step, blank inspection: blank material is D6AC high strength steel, and 800 DEG C of heat preservation 2-3h annealing detect the ruler of blank workpiece
Very little, surface roughness and test tensile strength；
Second step, vehicle benchmark: using numerical control vertical lathe Vehicle Processing blank workpiece benchmark, guarantees datum level flatness 0.05mm；
Third step, spinning: the first clamping mold on strength cnc spinning machine, and lubricant is smeared, blank workpiece is installed later
Gradually spinning is carried out by the numerical control program of setting on mold, obtains the workpiece of wall thickness δ and roundness control within 0.1mm,
A small amount of surplus is reserved for subsequent machining in both ends；Using drawing bowl-type spinning roller, 30 ° of established angle, two passage spinning,
A time spinning reduction 60%, spinning machine speed of mainshaft 20r/min, feed rate 1mm/r；Annealing destressing processing is carried out later,
500 DEG C of annealing temperature, the second passage is final spinning, spinning reduction 35%, spinning machine speed of mainshaft 20r/min, feed rate
0.4mm/r；
Cleaning: 4th step by the lubricant of workpiece surface and dirty is cleaned up with acetone；Standard is carried out for next step heat treatment
It is standby；
5th step, heat treatment: carry out modifier treatment to the workpiece after cleaning, quenching: 850 DEG C, 15min, oil is cold；Tempering: 600
DEG C, oil is cold；
6th step, smart car upper end and lower end: the upper end of Vehicle Processing workpiece, installation side, seam allowance, the surplus that 1.5mm is reserved at coating
It is processed for subsequent component, guarantees diameter tolerance within ± 0.1mm, total high tolerance+0.10mm, the free shape of circumference bounce
0.1mm under state；
7th step bores boring both ends end-face hole: boring both ends end face bolt through-hole, guarantees position degree φ 0.2mm, both ends of the surface angularly position
PRECISION HOLE guarantees position degree φ 0.05mm；
Punching press blade profile slot: 8th step by clamping mould on numerical control press, workpiece is mounted on cavity plate, utilizes numerical control press
It is radial equidistant on workpiece to rush blade profile slot and refine, guarantee blade profile groove location degree φ 0.2mm, blade profile channel profiles degree 0.05mm；
Aperture is removed by pincers worker sand paper simultaneously and remains burr, but retains sharp side, Dies ' Blanking gap 0.075mm；
Magnetic testing: 9th step detects surface and the near surface flaw of workpiece；It is not allow for crackle, hairline and dotted impurity；
Tenth step, examines, storage: workpiece is tested by design drawing requirement, and it is mating for component to carry out package storage later.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201810322337.2A CN108480930B (en) | 2018-04-11 | 2018-04-11 | A kind of processing method of low-pressure compressor casing |
Applications Claiming Priority (1)
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|---|---|---|---|
| CN201810322337.2A CN108480930B (en) | 2018-04-11 | 2018-04-11 | A kind of processing method of low-pressure compressor casing |
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| CN108480930A CN108480930A (en) | 2018-09-04 |
| CN108480930B true CN108480930B (en) | 2019-10-01 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109604950A (en) * | 2018-12-06 | 2019-04-12 | 重庆天骄航空动力有限公司 | A kind of processing method of aero-engine casing |
| CN110497162B (en) * | 2019-09-23 | 2021-03-05 | 无锡航亚科技股份有限公司 | Machining method of aeroengine case |
| CN112059553B (en) * | 2020-09-08 | 2021-11-05 | 中国航发沈阳黎明航空发动机有限责任公司 | Multiple cross machining method for intermediary case |
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| US5822860A (en) * | 1996-12-23 | 1998-10-20 | General Motors Corporation | Integrally retained bearing race with improved twisting resistance |
| CN1250354C (en) * | 2001-07-27 | 2006-04-12 | 中国兵器工业第五五研究所 | Thickwall composite component spinning production process |
| CN103644222A (en) * | 2013-11-28 | 2014-03-19 | 泉州市泰达车轮设备有限公司 | Double-metal heat dissipation type brake drum and machining method thereof |
| ES2613356T3 (en) * | 2014-07-23 | 2017-05-24 | Istituto Poligrafico E Zecca Dello Stato S.P.A. | Method for obtaining shaped work dies to coin coins |
| CN105333103B (en) * | 2015-11-18 | 2019-04-23 | 杭州禾呈科技股份有限公司 | A kind of two-stage coaxle multi-wedge type high-precision spinning belt pulley and its manufacturing method |
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Effective date of registration: 20200416 Granted publication date: 20191001 |