CN109514297A - A kind of blade machining process and clamping tooling - Google Patents
A kind of blade machining process and clamping tooling Download PDFInfo
- Publication number
- CN109514297A CN109514297A CN201811396476.6A CN201811396476A CN109514297A CN 109514297 A CN109514297 A CN 109514297A CN 201811396476 A CN201811396476 A CN 201811396476A CN 109514297 A CN109514297 A CN 109514297A
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- blade
- processing
- disk
- vibration
- machining process
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q3/00—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine
- B23Q3/02—Devices holding, supporting, or positioning work or tools, of a kind normally removable from the machine for mounting on a work-table, tool-slide, or analogous part
- B23Q3/06—Work-clamping means
- B23Q3/062—Work-clamping means adapted for holding workpieces having a special form or being made from a special material
Abstract
The present invention provides a kind of blade machining process and processing and loading clamp tooling, proposes that Electrolyzed Processing and vibration finishing process combination complete the process of blade holotype face processing.Blade center type face is processed first with precision ECM processing technology, then blade leading edge and exhaust side rounding are realized by vibration finishing technology, and blade holotype face is finally made to meet design requirement.By the unmanageable blade leading edge of precision ECM processing technology and exhaust is removed when arcuate structure is using vibration point and rounding effect realizes rounding, reduces Electrolyzed Processing electrode iterative calculation difficulty and number, improves the machining accuracy at this.Therefore the present invention is suitable for the batch production of blade quickly, inexpensive, has huge potential benefit.
Description
Technical field
The invention belongs to blade of aviation engine processing technique field, it is related to a kind of blade machining process and clamping tooling.
Background technique
Electrolyzed Processing is a kind of principle that anodic electrochemical dissolution occurs in electrolyte solution using metal material, by
The tool cathode of forming works the work piece into the technology of shape.The technology is not limited by workpiece material mechanics, mechanical performance,
Piece surface processing quality is high, unstressed, lossless without heat affected area, tool cathode.Vibration finishing technique be it is a kind of need to be by one
Surely workpiece, abrasive material and the grinding fluid matched is fitted into the container of certain shapes, and abrasive material presses certain track vibration motion, makes abrasive material
The surface finishing technique of collision, rolling and microcosmic grinding, delineation effect is generated to workpiece.In recent years, aero-engine has been got over
More develop to fine, accurate direction, as novel aero-engine is increasing, blade demand is caused to increase in explosion type
It is long.The intake and exhaust side of novel aero-engine compressor blade is a kind of tiny arc structure of high-precision plane of bending, the structure
Blade be widely used in aero-engine field.
Currently, common blade intake and exhaust side processing method has: machining, rolling and adaptive polishing, finish forge with from
Adapt to polishing, precision ECM processing etc..But the above method all exists when processing blade intake and exhaust side tiny arc structure
Itself it is difficult to the deficiency overcome.For example deformation is easy to produce in machining due to residual stress concentrations, processing cost is high；From
It is high to the coherence request of preceding process to adapt to polishing, and polishing abrasive belt width limits the place big to blade profile Curvature varying
Polishing effect；Precision ECM processing requires electrode precision and semifinished product precision high, lead time length etc..Precision ECM processes needle
High to the difficulty of blade intake and exhaust side straight forming, the lead time is very long, affects the application of precision ECM processing.
Summary of the invention
The present invention provides a kind of blade machining process and clamping tooling, and precision ECM processing technology is utilized to process blade center
Type face, then blade intake and exhaust side rounding is realized by vibration finishing technology, solve existing blade precision ECM processing technology research and development
The problem that period is long, research and development difficulty is big.
The present invention provides a kind of blade machining process, includes the following steps:
Step 1: blade holder and electrode clamping tooling are fixed on precision ECM machining tool, to electrode mating surface and
Blade blank mating surface carries out centering；
Step 2: electrode being mounted on electrode clamping tooling, blade blank is mounted on blade frock；
Step 3: blade blank finds final Working position to knife；
Step 4: the technological parameter of Electrolyzed Processing is set according to part feature；
Step 5: opening power supply and electrolyte, start the processing of turbine blades in electrochemical type face；
Step 6: the blade center type face of electrolysis-type face after processing is completed enters tolerance, leading edge and exhaust side unilateral side normal direction
Surplus is about 0.03~0.1mm；
Step 7: according to the state of electrolysis rear blade leading edge and exhaust edge profile surplus, determining the work of vibration finishing processing
Skill parameter and processing consumptive material, the blade after the processing of electrolysis-type face is mounted on special tooling, and starting vibration finishing equipment is opened
Beginning blade leading edge and exhaust side tangential vibrations decorated processing, utilize the sharp side effect of vibration finishing in process, make leaf
Wedge angle at piece leading edge and exhaust side is gradually rounded, and profile progresses into the effect of tolerance.
In blade machining process of the invention, the special tooling in the step 7 includes disk and multiple for fixing
The fixture of blade, the circle disk center are equipped with main shaft, and the main shaft upper end is equipped with the adapter for connecting with vibrating burnisher,
Multiple fixtures are evenly arranged on the periphery of disk.
It is described that centering is carried out to electrode mating surface and blade blank mating surface in blade machining process of the invention, with
Guarantee three cooperation verticality≤0.01mms of the datum level with respect to lathe benchmark, the depth of parallelism≤0.01mm.
In blade machining process of the invention, electrolytic processing process parameter specifically: 10~35V of machining voltage, conductance
75~160mS/cm of rate, 5~16bar of electrolyte pressure, vibrate width by 20~35 DEG C of electrolyte temperature, 30~50Hz of vibration frequency
0.3~0.5mm is spent, vibration is to 60~120 ° of electrical angle, 0.1~1.0mm/min of feed speed.
In blade machining process of the invention, processing consumptive material is ceramic abrasive, and shape is that 04/05 ZS of RMB/D1 tiltedly justifies
04/04 D regular triangular prism of column and RMB/D1.
In blade machining process of the invention, grinding fluid selects pH value to grind for 7~9 alkalescent in vibration finishing processing
Liquid.
In blade machining process of the invention, vibration finishing 3~18h of process time, motor speed 1400~
1440rpm, blade leading edge and exhaust edge position removal amount are in 0.02~0.15mm.
The present invention also provides a kind of blade processing clamping toolings, including disk and multiple fixtures for fixed blade, institute
Circle disk center is stated equipped with main shaft, the main shaft upper end is equipped with the adapter for connecting with vibrating burnisher, and multiple fixtures are uniform
It is arranged on the periphery of disk.
In blade processing clamping tooling of the invention, the fixture includes positioning seat and pressing plate, and the positioning seat passes through
First bolt is fixed on disk, and the pressing plate is mounted on positioning seat by the second bolt, and blade clamping is in positioning seat and pressure
It is clamped between plate and by the second bolt.
In blade processing clamping tooling of the invention, the main shaft is separately positioned on the lock of disk biside by two
Tight bolt is fixed in the circle center hole of disk.
Traditional blades Electrolyzed Processing needs Iterative Design mostly set electrode to be tested for blade intake and exhaust side form accuracy
Optimization.If leaf curling degree is high, the lead time of single blade is very long, influences the application of precision ECM processing.This hair
Bright combination precision ECM processes the extraordinary advantage of part consistency, proposes that Electrolyzed Processing and vibration finishing process combination complete leaf
Precision ECM processing technology unmanageable blade intake and exhaust side arcuate structure is utilized vibration by the process of piece holotype face processing
The removal of dynamic point side and rounding effect realize rounding, reduce Electrolyzed Processing electrode iterative calculation difficulty and number, improve at this
Machining accuracy.Therefore the present invention is suitable for the batch production of blade quickly, inexpensive, has huge potential benefit.
Detailed description of the invention
Fig. 1 is precision ECM processing schematic cross-section；
Fig. 2 is blade leading edge sectional view before and after vibration finishing；
Fig. 3 is blade exhaust side sectional view before and after vibration finishing；
Fig. 4 is blade vibration light decorations process overall schematic；
Fig. 5 is blade vibration decorated processing clamping tooling front view；
Fig. 6 is blade vibration decorated processing clamping tooling side view；
Fig. 7 is the front view of the fixture of blade vibration decorated processing clamping tooling；
Fig. 8 is the side view of the fixture of blade vibration decorated processing clamping tooling.
Specific embodiment
The present invention provides a kind of blade combinational processing method, processes blade center type first with precision ECM processing technology
Face, then blade leading edge and exhaust side rounding are realized by vibration finishing technology, and so that blade holotype face is met design and want
It asks.
A kind of blade machining process of the invention, includes the following steps:
Step 1: blade holder and electrode clamping tooling are fixed on precision ECM machining tool, to electrode mating surface and
Blade blank mating surface carries out centering；
When it is implemented, the precision ECM machining tool is high-frequency narrow-pulse precision vibration electrolytic machine tool.To electricity
Pole mating surface and blade blank mating surface carry out centering, with guarantee three cooperation datum levels with respect to lathe benchmark verticality≤
0.01mm, the depth of parallelism≤0.01mm.
Step 2: electrode being mounted on electrode clamping tooling, blade blank is mounted on blade frock；
Step 3: blade blank finds final Working position to knife；
Step 4: the technological parameter of Electrolyzed Processing is set according to part feature；
When it is implemented, electrolytic processing process parameter specifically: 10~35V of machining voltage, 75~160mS/cm of conductivity,
5~16bar of electrolyte pressure, 20~35 DEG C of electrolyte temperature, 30~50Hz of vibration frequency, 0.3~0.5mm of Oscillation Amplitude, vibration
It moves to 60~120 ° of electrical angle, 0.1~1.0mm/min of feed speed.
Step 5: opening power supply and electrolyte, start the processing of turbine blades in electrochemical type face；
If Fig. 1 is precision ECM processing schematic cross-section, blade back electrode 61 and leaf basin electrode 62 are mutually leaned on when Electrolyzed Processing
Hold together, form processing cavity, electrolyte enters processing cavity from 64 outflow of electrolyte channel outlet from electrolyte channel entrance 63, realizes
Precision ECM processing to blade 5.
Step 6: the blade center type face of electrolysis-type face after processing is completed enters tolerance, leading edge and exhaust side unilateral side normal direction
Surplus is about 0.03~0.1mm；
Step 7: according to the state of electrolysis rear blade leading edge and exhaust edge profile surplus, determining the work of vibration finishing processing
Skill parameter and processing consumptive material, the blade after the processing of electrolysis-type face is mounted in special clamping tooling, and starting vibration finishing is set
It is standby to start blade leading edge and exhaust side tangential vibrations decorated processing, the sharp side effect of vibration finishing is utilized in process,
It is rounded blade leading edge and the wedge angle being vented at side gradually, profile progresses into the effect of tolerance.
Fig. 2 is blade leading edge sectional view before and after vibration finishing, and Fig. 3 is blade exhaust side sectional view before and after vibration finishing.
When it is implemented, processing consumptive material is ceramic abrasive, shape is 04/05 ZS oblique circular cylinder of RMB/D1 and RMB/D1 04/
04 D regular triangular prism.Vibration finishing processing in grinding fluid select pH value for 7~9 alkalescent grinding fluid.Vibration finishing process time 3~
18h, 1400~1440rpm of motor speed, blade leading edge and exhaust edge position removal amount are in 0.02~0.15mm.
As shown in Fig. 4 to 8, a kind of clamping tooling is devised in order to meet the vibration finishing processing request present invention, as vibration
The special clamping tooling of dynamic light decorations, including disk 1 and multiple fixtures 2 for fixed blade 5.1 center of circle of disk is equipped with master
Axis 11,11 upper end of main shaft are equipped with the adapter 4 for connecting with vibrating burnisher, and multiple fixtures 2 are evenly arranged in disk 1
Periphery on.
The fixture 2 includes positioning seat 22 and pressing plate 21, and the positioning seat 22 is fixed on disk 1 by the first bolt 24
On, the pressing plate 21 is mounted on positioning seat 22 by the second bolt 23,5 clamping of blade between positioning seat 22 and pressing plate 21 simultaneously
It is clamped by the second bolt 23.
The main shaft 11 is fixed on the center of circle of disk 1 by two clamping screws 12 for being separately positioned on 1 two sides of disk
In hole.
When carrying out vibration finishing processing, clamping tooling is fixedly connected with vibrating burnisher by adapter 4, clamping tooling
Protrude into the inner cavity 3 of vibrating burnisher, will on blade 5 clamping to fixture 2, start vibration finishing equipment start blade leading edge and
It is vented side tangential vibrations decorated processing, as shown in figure 8, direction shown in arrow is the direction of motion of abrasive material in figure, in process
The middle sharp side effect using vibration finishing is rounded blade leading edge and the wedge angle being vented at side gradually, and profile progresses into public affairs
The effect of difference.
The foregoing is merely presently preferred embodiments of the present invention, the thought being not intended to limit the invention, all of the invention
Within spirit and principle, any modification, equivalent replacement, improvement and so on be should all be included in the protection scope of the present invention.
Claims (10)
1. a kind of blade machining process, which comprises the steps of:
Step 1: blade holder and electrode clamping tooling being fixed on precision ECM machining tool, to electrode mating surface and blade
Blank mating surface carries out centering；
Step 2: electrode being mounted on electrode clamping tooling, blade blank is mounted on blade frock；
Step 3: blade blank finds final Working position to knife；
Step 4: the technological parameter of Electrolyzed Processing is set according to part feature；
Step 5: opening power supply and electrolyte, start the processing of turbine blades in electrochemical type face；
Step 6: the blade center type face of electrolysis-type face after processing is completed enters tolerance, leading edge and exhaust side unilateral side normal direction surplus
About 0.03~0.1mm；
Step 7: according to the state of electrolysis rear blade leading edge and exhaust edge profile surplus, determining the technique ginseng of vibration finishing processing
Number and processing consumptive material, the blade after the processing of electrolysis-type face is mounted on special tooling, and starting vibration finishing equipment starts leaf
Piece leading edge and exhaust side tangential vibrations decorated processing, in process utilize vibration finishing sharp side effect, make blade into
Gas while and exhaust while at wedge angle be gradually rounded, profile progresses into the effect of tolerance.
2. blade machining process as described in claim 1, which is characterized in that the special tooling in the step 7 includes disk
With multiple fixtures for fixed blade, the circle disk center is equipped with main shaft, and the main shaft upper end is equipped with and is used for and vibration finishing
The adapter of machine connection, multiple fixtures are evenly arranged on the periphery of disk.
3. blade machining process as described in claim 1, which is characterized in that described to cooperate electrode mating surface and blade blank
Face carries out centering, to guarantee three verticality≤0.01mms of the cooperation datum level with respect to lathe benchmark, the depth of parallelism≤0.01mm.
4. blade machining process as described in claim 1, which is characterized in that electrolytic processing process parameter specifically: processing electricity
Press 10~35V, 75~160mS/cm of conductivity, 5~16bar of electrolyte pressure, 20~35 DEG C of electrolyte temperature, vibration frequency 30
~50Hz, 0.3~0.5mm of Oscillation Amplitude, vibration is to 60~120 ° of electrical angle, 0.1~1.0mm/min of feed speed.
5. blade machining process as described in claim 1, which is characterized in that processing consumptive material is ceramic abrasive, shape RMB/
04/04 D regular triangular prism of 04/05 ZS oblique circular cylinder of D1 and RMB/D1.
6. blade machining process as described in claim 1, which is characterized in that grinding fluid selects pH value for 7 in vibration finishing processing
~9 alkalescent grinding fluid.
7. blade machining process as described in claim 1, which is characterized in that vibration finishing 3~18h of process time, motor turn
1400~1440rpm of speed, blade leading edge and exhaust edge position removal amount are in 0.02~0.15mm.
8. a kind of blade processing clamping tooling, which is characterized in that including disk and multiple fixtures for fixed blade, the circle
The disk center of circle is equipped with main shaft, and the main shaft upper end is equipped with the adapter for connecting with vibrating burnisher, and multiple fixtures are evenly arranged
On the periphery of disk.
9. blade processing clamping tooling as claimed in claim 8, which is characterized in that the fixture includes positioning seat and pressing plate,
The positioning seat is fixed on disk by the first bolt, and the pressing plate is mounted on positioning seat by the second bolt, blade dress
It is clipped between positioning seat and pressing plate and is clamped by the second bolt.
10. blade processing clamping tooling as claimed in claim 8, which is characterized in that the main shaft is respectively set by two
In the circle center hole that the clamping screw of disk biside is fixed on disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396476.6A CN109514297B (en) | 2018-11-22 | 2018-11-22 | Blade machining method and clamping tool |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811396476.6A CN109514297B (en) | 2018-11-22 | 2018-11-22 | Blade machining method and clamping tool |
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| CN109514297A true CN109514297A (en) | 2019-03-26 |
| CN109514297B CN109514297B (en) | 2020-12-18 |
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| CN110791756A (en) * | 2019-12-03 | 2020-02-14 | 浙江工业大学 | Blade clamping device for electromagnetic field composite laser additive repair |
| CN110925026A (en) * | 2019-12-18 | 2020-03-27 | 无锡透平叶片有限公司 | Vibration light decoration protection device for blade |
| CN113878410A (en) * | 2021-11-01 | 2022-01-04 | 中国航发沈阳黎明航空发动机有限责任公司 | High-shape precision forming method for arc of air inlet and outlet edges of blade |
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| CN113878410A (en) * | 2021-11-01 | 2022-01-04 | 中国航发沈阳黎明航空发动机有限责任公司 | High-shape precision forming method for arc of air inlet and outlet edges of blade |
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