CN103752918A - Zero-position cutting and finish-milling process for air channel molded line of air compressor moving blade - Google Patents
Zero-position cutting and finish-milling process for air channel molded line of air compressor moving blade Download PDFInfo
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Abstract
The invention discloses a zero-position cutting and finish-milling process for an air channel molded line of an air compressor moving blade and belongs to the technical field of blade machining. According to the finish-milling process, the air compressor moving blade, of which the air channel molded line is roughly machined, is clamped on a numerical control milling machine with a front-back double-drive structure through a double-drive frame clamp; the root end of the blade is positioned through a blade root end surface, a blade root air inlet side and a blade root intermediate internal plane and is pressed and clamped through a blade root intermediate back plane; the crown end of the blade is positioned through a process head air inlet side and a process head internal plane and is pressed and clamped through a process head back plane; in a spiral machining mode, the semi-finish-machining and finish-machining of a blade root longitudinal platform circular arc surface, a blade root fillet R surface and the air channel molded line are completed. According to the zero-position cutting and finish-milling process for the air channel molded line of the air compressor moving blade, the size of the product is machined to be in a tolerance range of a finished product during finish-milling machining, the extremely-small margin approximate to 0 is left for a polishing process, the machining accuracy of the air channel molded line of the blade is effectively improved, the requirement on high accuracy of the product is met, and meanwhile, the machining efficiency is ensured.
Description
Technical field
The present invention relates to a kind of blade processing technique, especially a kind of compressor blade and blade air flue molded line zero-bit cutting finish-milling technique, belongs to blade processing technique technical field.
Background technology
The air flue of compressor blade and blade is variable cross-section molded line, within the scope of the airway length of about 50-350mm, there are nearly 23 cross sections, enter trailing edge R from R0.18mm to R0.3mm, air flue profile tolerance precision is ± 0.1mm, air flue profile tolerance precision than other blades is much higher, the relative root center position degree requirement of air flue center of gravity is simultaneously ± 0.1mm, the crooked intermediate cross-section that allows of air flue is less than 0.08mm with respect to the every 25.4mm variable of two ends baseline cross-section, air flue is a face of cylinder with the longitudinal platform arc surface of blade root (also claiming to pass through mutually face) of blade root, the face that passes through mutually with respect to blade root endface position tolerance is+0.13/-0.38.
In the milling process of blade air flue molded line, according to traditional process route, according to Theoretical Design value, to add on the basis of product air flue position degree and profile tolerance scope and leave again 0.1mm-0.2mm surplus to postorder polishing process in the technique of finish-milling operation, although control and obtained larger improvement at the milling process of finish-milling like this, but it has brought all difficulties directly to postorder polishing, in polishing process, because most of size need to be passed through hand polishing, so the compressor blade and blade dimensional stability that processes of conventional machining process and precision are not easy to guarantee very much.
According to unifying datum principle, the assembling of compressor blade and blade, detection reference all should be on the working face of blade root, and in air flue molded line finish-milling first being processed, blade has completed the fine finishining of blade root end, comprise blade root end face, blade root fitting surface, the fine finishining of blade root intermediate and blade root side-locating face, therefore the first benchmark of air flue profile processing also should be selected blade root fitting surface, but because blade root fitting surface is the inclined-plane that two and root center have angle, when clamping workpiece, must there is a larger thrust on blade root end face, just can make clamping workpiece firm, this is the project organization to fixture just, make precision, operator's fixture technology etc. has all proposed very high requirement, integral shroud end selects the top mode that holds out against centre hole to realize location and the clamping of integral shroud, but compressor blade and blade air flue very thin thickness, pressure will cause too greatly blade in process along with air flue is worked into finished product (attenuation) and be out of shape, pressure is too little can cause milling again time, and workpiece is trembled and digs cutter, cause workpiece to be scrapped.
In sum, by traditional installation way and processing technology, carry out compressor blade and blade air flue profile processing, difficulty of processing is large, and machining accuracy, working (machining) efficiency and yield rate are not well positioned to meet production requirement.
Summary of the invention
Goal of the invention of the present invention is: for the problem of above-mentioned existence, a kind of compressor blade and blade air flue molded line zero-bit cutting finish-milling technique is provided, by change, locate and installation way, and add and man-hour the dimensioned of product is arrived in the margin of tolerance of finished product at finish-milling, stay the surplus of minimum approaching " 0 " to postorder polishing, to reduce blade processing difficulty, improve the machining accuracy of blade air flue molded line, when meeting the high-precision requirement of product, guarantee working (machining) efficiency.
The technical solution used in the present invention is as follows:
A compressor blade and blade air flue molded line zero-bit cutting finish-milling technique, completes by following steps:
(a) clamping: the compressor blade and blade after roughing air flue molded line is clamped on the gyroaxis of front and back Dual Drive structure CNC milling machine with two framework fixtures that drive, the blade root end of blade is with blade root end face, blade root air inlet side and three location of blade root intermediate inner plane, blade root intermediate tool back plane compresses clamping, the integral shroud end of blade is with technique head air inlet side and technique head inner plane location, and technique head tool back plane compresses clamping;
(b) semifinishing: adopt spiral processing mode, the longitudinal platform arc surface of half finish-milling blade root, half finish-milling blade root root fillet R face, half finish-milling air flue molded line, half finish-milling blade root root fillet R face successively, and controlled working precision, during half finish-milling blade root root fillet R face, by air flue molded line to blade root direction, processed, during half finish-milling air flue molded line, by integral shroud to blade root direction, processed;
(c) fine finishining: adopt spiral processing mode, the longitudinal platform arc surface of finish-milling blade root, finish-milling blade root root fillet R face, finish-milling air flue molded line successively, and controlled working precision makes to be of a size of technological requirement size after processing, finish-milling blade root root fillet R is processed to blade root direction by air flue molded line during face, during finish-milling air flue molded line, by integral shroud to blade root direction, is processed.
In described step b and c, on the gyroaxis of front and back Dual Drive structure CNC milling machine, blade is applied to the clamping power of floating.
The roughwrought compressor blade and blade surplus that described step a adopts is 1.5 ± 0.3mm, after described step b semifinishing, the surplus of the longitudinal platform arc surface of blade root is 0.1-0.2mm, and the surplus of blade root root fillet R face is 0-0.1mm, and the surplus of air flue molded line is 0.2-0.3mm.
After described step c fine finishining, the size of working position is positioned at the upper margin of tolerance of technological requirement.
In described step b, when the longitudinal platform arc surface of half finish-milling blade root and blade root root fillet R face, adopt willow leaf ball head knife, milling cutter rotating speed is 2800-3000r/min, the amount of feeding is 2600mm/min, and during half finish-milling air flue molded line, adopting nose of an ox cutter, milling cutter rotating speed is 2800-3000r/min, the amount of feeding is 2200-2600mm/min, again adopt whole hard alloy ball cutter during half finish-milling blade root root fillet R face, milling cutter rotating speed is 3000-3200r/min, and the amount of feeding is 2600mm/min.
In described step c, when the longitudinal platform arc surface of finish-milling blade root and blade root root fillet R face, adopt sintered carbide ball cutter, milling cutter rotating speed is 3200-3500 r/min, the amount of feeding is 2600mm/min, during finish-milling air flue molded line, adopt nose of an ox cutter, milling cutter rotating speed is 3000-3200r/min, and the amount of feeding is 2600-3200mm/min.
A kind of compressor blade and blade sheet that adopts described compressor blade and blade air flue molded line zero-bit cutting finish-milling explained hereafter.
Compressor blade and blade air flue molded line zero-bit cutting finish-milling technique of the present invention, it is the processing scheme of the finish-milling air flue molded line " zero-bit cutting " by designing after engineer testing repeatedly, the design concept of " zero-bit cutting " is here: for guarantee operation after product machining accuracy, reduce difficulty of processing, before carrying out, operation adds man-hour, the dimensioned of product is arrived in the margin of tolerance of finished product, stay the surplus of minimum approaching " 0 " to rear operation (polishing), with this, meet the high-precision requirement of product; The present invention is based on above-mentioned design concept, by adopting brand-new clamping process and positioning datum, make product can complete semifinishing and fine finishining after clamped one time, reduced and should be the accumulated error that benchmark in processing transforms described generation, blade air flue molded line after fine finishining is only done surface finish, and by polishing, do not go surplus, and then guaranteed the machining accuracy of blade finished product." zero-bit cutting " processing scheme that the present invention adopts, has guaranteed the required precision of finished product blade, reduced polishing air flue molded line difficulty, improved working (machining) efficiency and quality.
In sum, owing to having adopted technique scheme, the invention has the beneficial effects as follows:
1, in semifinishing and fine finishining, adopt two framework fixtures that drive, the blade root of blade is held with blade root end face, blade root air inlet side and three location of blade root intermediate inner plane, blade root intermediate tool back plane compresses clamping, the integral shroud end of blade is with technique head air inlet side and technique head inner plane location, technique head tool back plane compresses clamping, changed traditional " top one folder " clamping theory, for air flue molded line finish-milling processing method is laid a good foundation, than original centre hole locate mode, workpiece is become to locating surface clamping, while having avoided hitting the heart like this, there is secondary accumulated error, while being also convenient to need to adjust, be convenient to travelling workpiece midway, so also increased in addition positioning intensity, avoid occurring vibrating in milling process, reduced workpiece deformation, solved compressor blade and blade clamping unstable, workpiece holds a yielding difficult problem, compressor blade and blade air flue machining accuracy and processing stability have been improved, also production efficiency and product percent of pass have been improved, make like this " zero-bit cutting " to obtain better assurance.
2, add the improvement of cutting way in man-hour, square former material by roughing after, the present invention adopts spiral processing and high-speed cutting strategy in semifinishing and fine finishining, the scheme of blade air flue molded line overall time processing has improved the reliability of product, reduce minute order and added the accumulated error that produce man-hour, high-speed cutting power is little, stability is relatively good, adopt large feeding, little cutting output, avoid cutter to rest on the long appearance resonance of local time, selected sharper cutting tool, while effectively avoiding cutting, produce too much machining stress, also taked in addition the processing sequence of blade weakness to strength, middle steam passage place adopts spiral cutting mode, make cutting force be dispersed in each axial direction, avoided because workpiece is thinner, the stressed ambassador of mistake of same direction workpiece working angles produces shake.
3, Dual Drive structure before and after machine adopted, avoid like this workpiece front and back rotation distortion power in milling process inconsistent, cause processing torsional deformation, give unsteady clamping power of lathe, when machining blade process Leaf is upheld or shrink, lathe can keep an equilibrant force effect all the time, has avoided blade to be again subject to the impact of external carbuncle in the situation that bearing processing internal stress and has caused distortion.
Accompanying drawing explanation
Examples of the present invention will be described by way of reference to the accompanying drawings, wherein:
Fig. 1 is the blade processing face schematic diagram of compressor blade and blade air flue molded line zero-bit cutting finish-milling technique of the present invention;
To be that compressor blade and blade of the present invention is two drive front view after framework fixture clamping to Fig. 2;
Fig. 3 is the top view of Fig. 2 of the present invention.
Mark in figure: 1-blade root end face, 2-blade root fitting surface, 3-blade root intermediate, the longitudinal platform arc surface of 4-blade root, 5-blade root root fillet R face, 6-air flue molded line, 7-integral shroud technique head, 8-machine tool rotary axle I, 9-machine tool rotary axle II, two 1 of framework fixture, two 2 of framework fixtures, 12-blade root intermediate inner plane, 13-blade root intermediate tool back plane, 14-technique head inner plane, 15-technique head tool back plane, 16-blade root air inlet side, the 17-technique head air inlet sides of driving of 11-of driving of 10-.
The specific embodiment
Disclosed all features in this description, or the step in disclosed all methods or process, except mutually exclusive feature and/or step, all can combine by any way.
Disclosed arbitrary feature in this description, unless narration especially all can be replaced by other equivalences or the alternative features with similar object.That is,, unless narration especially, each feature is an example in a series of equivalences or similar characteristics.
Compressor blade and blade air flue molded line zero-bit cutting finish-milling technique of the present invention, by following steps, complete: (a) clamping: with two framework fixtures that drive, the compressor blade and blade after roughing air flue molded line is clamped on the gyroaxis of front and back Dual Drive structure CNC milling machine, the blade root end of blade is with blade root end face 1, blade root air inlet side 16 and 12 3 location of blade root intermediate inner plane, blade root intermediate tool back plane 13 compresses clamping, the integral shroud end of blade is with technique head air inlet side 17 and technique head inner plane 14 location, and technique head tool back plane 15 compresses clamping; (b) semifinishing: adopt spiral processing mode, the longitudinal platform arc surface 4 of half finish-milling blade root, half finish-milling blade root root fillet R face 5, half finish-milling air flue molded line 6, half finish-milling blade root root fillet R face 5 successively, and controlled working precision, during half finish-milling blade root root fillet R face 5, by air flue molded line 6 to blade root direction, processed, during half finish-milling air flue molded line 6, by integral shroud to blade root direction, processed; (c) fine finishining: adopt spiral processing mode, the longitudinal platform arc surface 4 of finish-milling blade root, finish-milling blade root root fillet R face 5, finish-milling air flue molded line 6 successively, and controlled working precision makes to be of a size of technological requirement size after processing, finish-milling blade root root fillet R is processed to blade root direction by air flue molded line 6 during face 5, during finish-milling air flue molded line 6, by integral shroud to blade root direction, is processed.
Embodiment
Compressor blade and blade workpiece of the present invention, as shown in Figure 1, the integral shroud technique head 7 that has blade root end and integral shroud end, blade root is held to the integral shroud technique head 7 of integral shroud end and is followed successively by blade root intermediate 3 and air flue molded line 6, the conventional machining flow process of blade is the fine finishining that first completes blade root end, comprise blade root end face 1, blade root fitting surface 2, the fine finishining of blade root air inlet side 16 and blade root intermediate 3, carry out again 6 roughing of air flue molded line, last finish-milling air flue molded line 6 again, compressor blade and blade air flue molded line zero-bit cutting finish-milling technique of the present invention is to carry out after blade root holds fine finishining and 6 roughing of air flue molded line to complete, comprise the longitudinal platform arc surface 4 of blade root, the processing of blade root root fillet R face 5 and air flue molded line 6, and the roughing of blade root end fine finishining and air flue molded line 6 is carried out according to common process.
Compressor blade and blade air flue molded line zero-bit cutting finish-milling technique of the present invention, the present embodiment adopts HAMUEL HSTM1000 high speed five axle blade Milling Machining Center to process, and adopts following steps and method to carry out:
(a) clamping: drive framework fixture (as shown in Figures 2 and 3 with two, comprise that two 1 10 of framework fixture that drive drive framework fixture 2 11 with two), the compressor blade and blade (as shown in Figure 1) that is 1.5 ± 0.3mm by surplus after the roughing of air flue molded line is clamped in HAMUEL HSTM1000 front and back Dual Drive structure (as shown in Figures 2 and 3, comprise machine tool rotary axle I 8 and machine tool rotary axle II 9) five axle blade Milling Machining Center gyroaxises on, the blade root end of blade is with blade root end face 1, blade root air inlet side 16 and 12 3 location of blade root intermediate inner plane, blade root intermediate tool back plane 13 compresses clamping, the end face that blade root air inlet side 16 is contrary also adopts pressing plate or screw to hold out against, the integral shroud end of blade is with technique head air inlet side 17 and technique head inner plane 14 location, technique head tool back plane 15 compresses clamping, after the end face that technique head air inlet side 17 is contrary also adopts pressing plate or screw to hold out against clamping, signal as shown in Figures 2 and 3.
The two framework fixtures that drive of employing of initiative of the present invention, the blade root end of blade is with blade root end face, blade root air inlet side and three location of blade root intermediate inner plane, blade root intermediate tool back plane compresses clamping, the integral shroud end of blade is with technique head air inlet side and inner plane location, technique head tool back plane compresses clamping, changed traditional " top one folder " clamping theory, for air flue molded line finish-milling processing method is laid a good foundation, in blade clamping process, with torque wrench, carry out tightening of clamping screw, after clamping, with the clearance gauge detection and location face of 0.02mm, whether clamping puts in place.Than original centre hole locate mode, workpiece is become to locating surface clamping, while having avoided hitting the heart like this, there is secondary accumulated error, while being also convenient to need to adjust, be convenient to travelling workpiece midway, so also increased in addition positioning intensity, avoid occurring vibrating in milling process, reduced workpiece deformation, solved compressor blade and blade clamping unstable, workpiece holds a yielding difficult problem, compressor blade and blade air flue machining accuracy and processing stability have been improved, also production efficiency and product percent of pass have been improved, make " zero-bit cutting " of the present invention machining based conception obtain better assurance.
In clamping process, owing to having changed positioning datum, (by traditional blade root fitting surface location, be converted to blade root end face, blade root air inlet side and three location of blade root intermediate inner plane), in order further to avoid accumulated error, improve the quality of processing, need in intermediate fine finishining process, guarantee the machining accuracy of blade root intermediate, guarantee that the thickness deviation band of blade root intermediate should be less than the position of related features production engineering specifications of root center line and air flue molded line center line, the production engineering specifications of this machining blade of take is example: the position of related features of the root center line of technological requirement and air flue molded line center line is 0.1mm, intermediate with respect to the maximum allowable tolerance of inner plane is ± 0.05mm, therefore the thickness deviation band of blade root intermediate should be less than 0.1mm, and the design load of the thickness deviation band of the present embodiment blade root intermediate is 0.06mm, can guarantee processing technology demand, in actual blade root fine finishining, by LGmazak horizontal Machining centers, process, equipment precision can reach 0.005mm, further the thickness deviation band of blade root intermediate is tightened up and is machined to 0.04mm, on the impact of center, be 0.02mm during the intermediate limit, the relative inner plane tolerance of intermediate is ± 0.02mm, the worst error of the relative root center line position of air flue center line is 0.04mm like this, meet the processing technology requirement of 0.1mm completely, by above-mentioned analysis, also can draw the following conclusions: under the condition that is 0.06mm at the thickness deviation band of the blade root intermediate based on blade technological design, when the thickness deviation band processing of blade root intermediate meets technological requirement, after in finish-milling technique of the present invention, clamping positioning datum is changed, the relative root center line position of air flue center line of processed finished products also can meet Product Process requirement.
Simultaneously, based on blade root end face, install behind location, although blade root fitting surface can meet the requirement at air flue molded line and each position of axial location groove completely apart from the tolerance range of blade root end face length dimension, can be not considered, but this size will affect the processing of integral shroud overall length and accuracy of detection, therefore when blade root fine finishining, guarantee the machining accuracy of blade root end face, to meet the position degree technological requirement of the longitudinal platform arc surface of blade root and air flue molded line, in the present embodiment blade processing, blade root fitting surface as theoretical principle, its tolerance apart from blade root end face length dimension is adjusted into 0/-0.05mm by 0/-0.15, while having better met postorder fine finishining leaf top overall length, benchmark is changed the accumulated error causing, so neither can increase difficulty of processing and the working (machining) efficiency of blade root, also the conversion for benchmark provides better guarantee.
The front and back Dual Drive structure that process equipment adopts, avoids workpiece front and back rotation distortion power in milling process inconsistent like this, causes processing torsional deformation; After clamping completes in process, the gyroaxis that further utilizes HAMUEL HSTM1000 applies the clamping power of floating for blade work in-process, when machining blade process Leaf is upheld or shrink, lathe can keep an equilibrant force effect all the time, avoided blade to be again subject to the impact of external carbuncle in the situation that bearing processing internal stress and caused distortion, further having guaranteed the quality of processing.Described unsteady clamping power utilizes SolidWorks software to analyze in the present embodiment process: first set up leaf model, and several anchor points of blade and clamping point are retrained to locking, then blade material is selected, setting load sets to axial external pressure of blade, analyze the displacement situation of blade, analog computation goes out the critical pressure value of blade deformation weak location, preliminary definite clamping power of floating, the clamping power of finally floating again input process equipment is debugged and is tried out; In addition, unsteady clamping power also can adopt empirical parameter valuation to debug setting.
Complete after blade clamping, to machining center input processing control procedure code, start the zero-bit cutting finish-milling processing of blade air flue molded line:
(b) semifinishing: adopt spiral processing mode, with the willow leaf ball head knife of the D20 successively longitudinal platform arc surface 4 of half finish-milling blade root and half finish-milling blade root root fillet R face 5, milling cutter rotating speed is 2800-3000r/min, the amount of feeding is 2600mm/min, use again the nose of an ox cutter half finish-milling air flue molded line 6 of D25R5, milling cutter rotating speed is 2800-3000r/min, the amount of feeding is 2200-2600mm/min, again use K12 whole hard alloy ball cutter half finish-milling blade root root fillet R face 5, milling cutter rotating speed is 3000-3200r/min, the amount of feeding is 2600mm/min, after semifinishing, the surplus of the longitudinal platform arc surface 4 of blade root is 0.1-0.2mm, the surplus of blade root root fillet R face 5 is 0-0.1mm, the surplus of air flue molded line 6 is 0.2-0.3mm, wherein: when half finish-milling blade root root fillet R face 5, by air flue molded line 6 to blade root direction, processed, during half finish-milling air flue molded line 6, by integral shroud to blade root direction, processed,
(c) fine finishining: adopt spiral processing mode, adopt K8 whole hard alloy ball the cutter longitudinal platform arc surface 4 of finish-milling blade root and finish-milling blade root root fillet R face 5 successively, milling cutter rotating speed is 3200-3500r/min, the amount of feeding is 2600mm/min, finally adopt D16R3 nose of an ox cutter finish-milling air flue molded line 6, milling cutter rotating speed is 3000-3200r/min, the amount of feeding is 2600-3200mm/min, work in-process controlled working precision, make to be of a size of blade technological requirement size after fine finishining, preferred by the size Control of working position in the upper margin of tolerance of technological requirement, further to ensure that polishing process meets finished product requirement, wherein: finish-milling blade root root fillet R is processed by air flue molded line to blade root direction during face 5, during finish-milling air flue molded line 6, by integral shroud to blade root direction, processed.
Described spiral processing mode, refers to along products radial direction and adopts the cutting of spiral helicine cutter track and to a kind of processing mode of the axial direction feeding of product, be cutting way common in machined.
Adding man-hour, after requirement finish-milling air flue molded line, all sizes and form and position tolerance (except roughness) processing are in the scope of finished product tolerance range, the step pitch of cutter track feeding is within 0.1mm, this surface sees it is the difficulty that has increased the processing of this operation, but by the appropriate design to fixture, the improvement of procedure cutting way, met the processing request of " zero-bit cutting ", compressor blade and blade air flue molded line zero-bit of the present invention cutting finish-milling technique is in the improvement that adds cutting way in man-hour: in semifinishing and fine finishining, adopt high-speed cutting strategy, the scheme of blade air flue molded line overall time processing has improved the reliability of product, reduce minute order and added the accumulated error that produce man-hour, high-speed cutting power is little, stability is relatively good, adopt large feeding, little cutting output, avoid cutter to rest on the long appearance resonance of local time, selected sharper cutting tool, while effectively avoiding cutting, produce too much machining stress, also taked in addition the processing sequence of blade weakness to strength, middle steam passage place adopts spiral cutting mode, make cutting force be dispersed in each axial direction, avoided because workpiece is thinner, the stressed ambassador of mistake of same direction workpiece working angles produces shake.
Complete after the processing of above-mentioned compressor blade and blade air flue molded line finish-milling, finally again by surface finish, go the operations such as technique head and line cutting processing blade overall length end face to obtain finished product blade.
Compressor blade and blade air flue molded line zero-bit cutting finish-milling technique of the present invention, add man-hour carrying out finish-milling operation, the dimensioned of product is arrived in the margin of tolerance of finished product, stay the surplus of minimum approaching " 0 " to rear polishing process, to improve the machining accuracy of blade air flue molded line, when meeting the high-precision requirement of product, guarantee working (machining) efficiency, the shortcoming such as the compressor blade and blade yield rate of having avoided traditional processing positioning and clamping and processing thought to cause is low, and working (machining) efficiency is low.
The present invention is not limited to the aforesaid specific embodiment.The present invention expands to any new feature or any new combination disclosing in this manual, and the arbitrary new method disclosing or step or any new combination of process.
Claims (7)
1. compressor blade and blade air flue molded line zero-bit is cut a finish-milling technique, it is characterized in that: by following steps, complete:
(a) clamping: the compressor blade and blade after roughing air flue molded line is clamped on the gyroaxis of front and back Dual Drive structure CNC milling machine with two framework fixtures that drive, the blade root end of blade is with blade root end face, blade root air inlet side and three location of blade root intermediate inner plane, blade root intermediate tool back plane compresses clamping, the integral shroud end of blade is with technique head air inlet side and technique head inner plane location, and technique head tool back plane compresses clamping;
(b) semifinishing: adopt spiral processing mode, the longitudinal platform arc surface of half finish-milling blade root, half finish-milling blade root root fillet R face, half finish-milling air flue molded line, half finish-milling blade root root fillet R face successively, and controlled working precision, during half finish-milling blade root root fillet R face, by air flue molded line to blade root direction, processed, during half finish-milling air flue molded line, by integral shroud to blade root direction, processed;
(c) fine finishining: adopt spiral processing mode, the longitudinal platform arc surface of finish-milling blade root, finish-milling blade root root fillet R face, finish-milling air flue molded line successively, and controlled working precision makes to be of a size of technological requirement size after processing, finish-milling blade root root fillet R is processed to blade root direction by air flue molded line during face, during finish-milling air flue molded line, by integral shroud to blade root direction, is processed.
2. compressor blade and blade air flue molded line zero-bit cutting finish-milling technique as claimed in claim 1, is characterized in that: in described step b and c, on the gyroaxis of front and back Dual Drive structure CNC milling machine, blade is applied to the clamping power of floating.
3. compressor blade and blade air flue molded line zero-bit as claimed in claim 1 or 2 is cut finish-milling technique, it is characterized in that: the roughwrought compressor blade and blade surplus that described step a adopts is 1.5 ± 0.3mm, after described step b semifinishing, the surplus of the longitudinal platform arc surface of blade root is 0.1-0.2mm, the surplus of blade root root fillet R face is 0-0.1mm, and the surplus of air flue molded line is 0.2-0.3mm.
4. compressor blade and blade air flue molded line zero-bit cutting finish-milling technique as claimed in claim 3, is characterized in that: after described step c fine finishining, the size of working position is positioned at the upper margin of tolerance of technological requirement.
5. compressor blade and blade air flue molded line zero-bit as claimed in claim 3 is cut finish-milling technique, it is characterized in that: in described step b, when the longitudinal platform arc surface of half finish-milling blade root and blade root root fillet R face, adopt willow leaf ball head knife, milling cutter rotating speed is 2800-3000r/min, the amount of feeding is 2600mm/min, during half finish-milling air flue molded line, adopt nose of an ox cutter, milling cutter rotating speed is 2800-3000r/min, the amount of feeding is 2200-2600mm/min, again adopt whole hard alloy ball cutter during half finish-milling blade root root fillet R face, milling cutter rotating speed is 3000-3200r/min, the amount of feeding is 2600mm/min.
6. compressor blade and blade air flue molded line zero-bit as claimed in claim 3 is cut finish-milling technique, it is characterized in that: in described step c, when the longitudinal platform arc surface of finish-milling blade root and blade root root fillet R face, adopt sintered carbide ball cutter, milling cutter rotating speed is 3200-3500 r/min, the amount of feeding is 2600mm/min, during finish-milling air flue molded line, adopting nose of an ox cutter, milling cutter rotating speed is 3000-3200r/min, and the amount of feeding is 2600-3200mm/min.
7. the described compressor blade and blade air flue molded line zero-bit of employing is cut the compressor blade and blade of finish-milling explained hereafter.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858682A (en) * | 2015-05-07 | 2015-08-26 | 北京航空航天大学 | Double-arm self-adapting fixture used for controlling machining deformation of blade |
| CN106392695A (en) * | 2016-09-14 | 2017-02-15 | 何世华 | Fixing method for machining engine blade |
| CN112809059A (en) * | 2020-12-22 | 2021-05-18 | 成都和鸿科技有限公司 | Processing method of journal type compressor blade |
| CN113020677A (en) * | 2021-03-22 | 2021-06-25 | 哈尔滨汽轮机厂有限责任公司 | Method for processing longitudinal leaf root steam passage of steam turbine |
| CN113664264A (en) * | 2021-08-27 | 2021-11-19 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for reducing milling deformation of blade |
| CN113458726B (en) * | 2021-06-29 | 2023-08-29 | 江苏兴达钢帘线股份有限公司 | Machining method for removing micro-deformation of robot travelling mechanism |
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| WO2005005093A2 (en) * | 2003-07-11 | 2005-01-20 | Alstom Technology Ltd | Method and device for the peripheral machining of a blank |
| CN202726538U (en) * | 2012-07-17 | 2013-02-13 | 四川绵竹鑫坤机械制造有限责任公司 | Universal blade steam passage molded line rough and finish milling clamp |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104858682A (en) * | 2015-05-07 | 2015-08-26 | 北京航空航天大学 | Double-arm self-adapting fixture used for controlling machining deformation of blade |
| CN104858682B (en) * | 2015-05-07 | 2017-12-26 | 北京航空航天大学 | A kind of blade processing Deformation control both arms Self adapting fixture |
| CN106392695A (en) * | 2016-09-14 | 2017-02-15 | 何世华 | Fixing method for machining engine blade |
| CN112809059A (en) * | 2020-12-22 | 2021-05-18 | 成都和鸿科技有限公司 | Processing method of journal type compressor blade |
| CN112809059B (en) * | 2020-12-22 | 2022-06-24 | 成都和鸿科技股份有限公司 | Processing method of journal type compressor blade |
| CN113020677A (en) * | 2021-03-22 | 2021-06-25 | 哈尔滨汽轮机厂有限责任公司 | Method for processing longitudinal leaf root steam passage of steam turbine |
| CN113458726B (en) * | 2021-06-29 | 2023-08-29 | 江苏兴达钢帘线股份有限公司 | Machining method for removing micro-deformation of robot travelling mechanism |
| CN113664264A (en) * | 2021-08-27 | 2021-11-19 | 中国航发沈阳黎明航空发动机有限责任公司 | Method for reducing milling deformation of blade |
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