CN114799754A - Stator blade ring machining method, electronic equipment and machining equipment - Google Patents
Stator blade ring machining method, electronic equipment and machining equipment Download PDFInfo
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- CN114799754A CN114799754A CN202210463382.6A CN202210463382A CN114799754A CN 114799754 A CN114799754 A CN 114799754A CN 202210463382 A CN202210463382 A CN 202210463382A CN 114799754 A CN114799754 A CN 114799754A
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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
- B23P23/00—Machines or arrangements of machines for performing specified combinations of different metal-working operations not covered by a single other subclass
Abstract
The invention discloses a stator blade ring processing method, electronic equipment and processing equipment, wherein the stator blade ring processing method comprises the following steps: controlling a processing device to mill a processing area between an inner ring and an outer ring of the front face of the workpiece for the first time, controlling the processing device to mill a processing area between an inner ring and an outer ring of the back face of the workpiece opposite to the front face in the thickness direction for the second time, controlling a cutting device to remove the inner ring of the workpiece, enabling inner ends of a plurality of quasi blades of the workpiece to be suspended, controlling the processing device to perform fine machining on the outer surface of each quasi blade of the workpiece, and processing the quasi blades into blades. The machining method has the advantages that the number of turning-over times is small, and the blade of the stator blade ring can be prevented from generating cutter connecting marks.
Description
Technical Field
The invention relates to the technical field of numerical control machining, in particular to a stator blade ring machining method, electronic equipment and machining equipment.
Background
At present, when a plurality of fan blades are machined and formed on an annular workpiece, the workpiece fixed on a clamp needs to be turned for many times, after each turning, a milling machine needs to determine the coordinate origin of a program on the workpiece again, the workpiece is turned for many times, and the workpiece is repeatedly clamped on the clamp, so that the position of the workpiece is not completely unique during each clamping, errors exist, tool receiving marks are easily formed on the fan blades, the machining precision and the surface smoothness of the fan blades are influenced, and the overall performance and the quality of the fan blades are reduced.
Chinese patent CN113915165A discloses a compressor stator vane ring and a processing method thereof, and provides a compressor stator vane ring, wherein the end of the blade far from the outer side ring is a suspended end, so the milling cutter does not need to extend into the space between the blades from the side surface of the compressor stator vane ring, the milling cutter can perform milling operation from the end along the direction surrounding the blades, and the milling cutter mills the inner side surface and the outer side surface of the blades along the circumferential direction of the blades. Although the provided scheme does not need to turn over the workpiece, repeatedly clamp and reduce the labor intensity, the scheme can only process a plurality of arc sections with blades in sequence, and finally the processed plurality of arc sections are spliced into a ring-shaped piece, so that the back frequency of the workpiece is reduced, but the subsequent step of splicing the plurality of arc sections is increased.
Therefore, a processing method capable of reducing the number of times of turning and ensuring higher strength of the stator blade ring is still needed to solve the above problems.
Disclosure of Invention
The invention provides a method for processing a stator blade ring, which solves the problems, not only can reduce the turn-over times, but also can ensure that the stator blade ring has higher strength.
The purpose of the invention is realized by adopting the following technical scheme:
a method of machining a stator vane ring, the method comprising:
controlling a machining device to conduct first milling on a machining area between an inner ring and an outer ring of the front face of the workpiece;
controlling the processing equipment to perform secondary milling on a processing area between an inner ring and an outer ring of a reverse side of the workpiece, which is opposite to a front side in the thickness direction;
controlling a cutting device to remove an inner ring of the workpiece, and enabling inner ends of a plurality of quasi-blades of the workpiece to be suspended;
and controlling the machining equipment to perform finish machining on the outer surface of each quasi blade of the workpiece, and machining the quasi blades into blades.
In one embodiment, the controlling the machining apparatus to perform the first milling of the machining region between the inner ring and the outer ring of the front surface of the workpiece includes:
acquiring position information of a first coordinate origin;
and controlling the processing equipment to process a processing area on the front surface of the workpiece based on the position information of the first coordinate origin so as to form at least part of structures of a plurality of quasi-blades.
In one embodiment, the obtaining the position information of the first coordinate origin includes:
acquiring the height H1 of the workpiece fixed on the first height reference plane and the position information of a first positioning point;
inputting the height H1 into a first preset formula Z0 which is 0+1/2H1, and calculating to obtain the height of a first coordinate origin;
and determining the position information of the first coordinate origin by using the position information of the first positioning point and the height of the first coordinate origin, wherein a connecting line of the first coordinate origin and the first positioning point is vertical to the first height reference plane.
In one embodiment, the controlling the processing device to process the processing area on the front surface of the workpiece based on the position information of the first coordinate origin includes:
controlling the machining equipment to semi-finish a machining area of the front face of the workpiece to form a leading edge structure of a quasi-blade close to the front face based on the position information of the first coordinate origin;
and controlling the processing equipment to finish the processing area of the front surface of the workpiece to form a leading edge shroud structure of the quasi-blade, which is close to the inner ring, based on the position information of the first coordinate origin.
In one embodiment, controlling the machining apparatus to perform the second milling of the machining region between the inner ring and the outer ring of the reverse side of the workpiece opposite to the front side in the thickness direction includes:
acquiring position information of a second coordinate origin;
and controlling the processing equipment to process a processing area on the reverse side of the workpiece based on the position information of the second coordinate origin, and forming a plurality of quasi-blades which are arranged at intervals along the inner circumference of the outer ring of the workpiece in the processing area of the workpiece, wherein the inner end of each quasi-blade is connected with the outer circumference of the inner ring of the workpiece, and the outer end of each quasi-blade is connected with the inner circumference of the outer ring of the workpiece.
In one embodiment, the obtaining the location information of the second coordinate origin includes:
acquiring the height H2 of the workpiece fixed on the second height datum plane and the position information of a second positioning point;
inputting the height H2 into a second preset formula Z0-0-1/2H 2, and calculating to obtain the height of a second coordinate origin;
determining the position information of the second coordinate origin by using the position information of the second positioning point and the height of the second coordinate origin, wherein a connecting line of the second coordinate origin and the second positioning point is vertical to the second height reference plane;
the controlling the processing device to process a processing area of the reverse side of the workpiece based on the position information of the second coordinate origin includes:
controlling the processing equipment to perform semi-finishing on a processing area of the reverse side of the workpiece to form a trailing edge structure of a quasi-blade close to the reverse side based on the position information of the second coordinate origin;
and controlling the processing equipment to finish the processing area of the reverse side of the workpiece to form a quasi-blade profile structure based on the position information of the second coordinate origin.
In one embodiment, said controlling said machining apparatus to finish an outer surface of each quasi-vane of said workpiece comprises:
acquiring position information of a third coordinate origin;
and controlling an angle head to finish the outer surface of each quasi blade of the workpiece based on the position information of the third coordinate origin, and processing the quasi blades into blades.
In one embodiment, the obtaining the location information of the third coordinate origin includes:
acquiring the height H3 of the workpiece fixed on the third height datum plane and the position information of a third positioning point;
inputting the height H3 into a third preset formula Z0-1/2H 3 or Z0-0 +1/2H3, and calculating to obtain the height of a third coordinate origin;
and determining the position information of the third coordinate origin by using the position information of the third positioning point and the height of the third coordinate origin, wherein a connecting line of the third coordinate origin and the third positioning point is vertical to the third height reference plane.
An electronic device comprising a memory storing a computer program and a processor implementing the steps of any of the above methods when the processor executes the computer program.
A processing apparatus, comprising: the clamp comprises a clamp assembly, a machining head and a main shaft, and is characterized by further comprising the electronic equipment, wherein the clamp assembly is used for clamping a workpiece on the machining equipment, and the main shaft is used for driving the machining head to machine the workpiece;
the clamp assembly includes:
the clamp comprises a clamp, a pressing plate and a pin shaft, wherein the upper surface of the clamp is provided with a pin hole and an annular step surface for placing a workpiece, the pressing plate is used for pressing the workpiece on the annular step surface of the clamp, and the pin shaft is used for penetrating through a through hole in the workpiece and the pin hole in the clamp.
Compared with the prior art, the invention has the beneficial effects that at least:
the invention provides a method for processing a stator blade ring, which comprises the steps of milling the front surface and the back surface of a workpiece once by adopting a workpiece with an inner ring, forming a quasi blade in a processing area of the workpiece, reserving the inner ring of the workpiece before forming the quasi blade in the processing area of the workpiece, connecting the two ends of the quasi blade with the inner ring and the outer ring of the workpiece respectively in the processing process, and cutting the workpiece into a plurality of arc sections in the process of processing and forming the quasi blade, thereby avoiding the splicing step, ensuring that the outer ring of the workpiece is of an integral structure and has better strength, then removing the inner ring of the workpiece and finely processing the outer surface of each quasi blade of the workpiece, and finally processing the quasi blade into the blade, wherein the blade forming of each quasi blade of the workpiece is completed by processing the outer surface of each quasi blade once, therefore, the generation of a cutter mark can be avoided, and the outer surface of the blade of the stator blade ring has better processing precision and surface flatness, the performance of the stator blade ring is improved.
Drawings
FIG. 1 is a block flow diagram of a method of manufacturing a stator vane ring according to an embodiment of the present invention;
FIG. 2 is a schematic structural view of a workpiece according to an embodiment of the present invention before first milling;
FIG. 3 is a schematic structural view of a workpiece after a second milling operation according to an embodiment of the invention;
FIG. 4 is a schematic structural view of a stator vane ring of an embodiment of the present invention;
FIG. 5 is a schematic view of a base structure of a first fixture according to an embodiment of the present invention;
FIG. 6 is a partial block diagram of the assembly of a second fixture and workpiece in accordance with an embodiment of the invention;
FIG. 7 is a schematic cross-sectional view of a workpiece held in a first fixture with the workpiece facing upward in accordance with an embodiment of the invention;
FIG. 8 is a schematic cross-sectional view of a workpiece clamped face-up in a first clamp in accordance with an embodiment of the invention;
FIG. 9 is a schematic cross-sectional view of a workpiece held in a second fixture with the front side facing up in accordance with an embodiment of the invention.
In the figure: 1. an outer ring; 2. a blade; 21. a quasi-leaf blade; 3. an inner ring; 4. a processing zone; 5. a first clamp; 6. a second clamp; 61. a second pin shaft; 62. and a second pressure plate.
Detailed Description
Example embodiments will now be described more fully with reference to the accompanying drawings. Example embodiments may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of example embodiments to those skilled in the art. The same reference numerals in the drawings denote the same or similar structures, and thus their repetitive description will be omitted.
The terms "first," "second," "third," "fourth," and the like in the description and in the claims of the present application and in the drawings described above, if any, are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "corresponding" and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
First, a simple description is made on the present application, in which the machining device in the present application, for example, is a four-axis milling machine or a five-axis milling machine on the market at present, wherein the hardware may include: a main shaft, a clamp assembly, a central control computer and the like. The software may include: and (4) macro program. The jig assembly may include: a first clamp 5, a first pressure plate (not shown) and a first pin (not shown), and a second clamp 6, a second pressure plate 62 and a second pin 61. The upper surface of the first clamp 5 is provided with a pin hole and an annular step surface for placing a workpiece, the first pressing plate is used for pressing the workpiece on the annular step surface of the first clamp 5, and the first pin shaft is used for penetrating through the through hole in the workpiece and the pin hole in the first clamp 5. The upper surface of the second clamp 6 is provided with a pin hole and an annular step surface for placing a workpiece, the second pressing plate 62 is used for pressing the workpiece on the annular step surface of the second clamp 6, and the second pin shaft 61 is used for penetrating through the through hole in the workpiece and the pin hole in the second clamp 6. Wherein the workpiece is machined by processes of turning pins, milling and the like before the machining method of the application, and the workpiece is provided with an inner ring 3, an outer ring 1 and a machining area 4 positioned in an annular area between the inner ring 3 and the outer ring 1.
The processing method can process the blades 2 on the inner side of the outer ring 1 on the premise of reducing the turnover frequency, and can also process the blades 2 on the outer side of the inner ring 3 on the premise of reducing the turnover frequency. Wherein, in the thickness direction, one side of the workpiece is defined as the front side, the other opposite side is the back side, the front edge of the quasi-blade 3 generated by processing is the edge of the quasi-blade 3 close to the front side, the rear edge of the quasi-blade 3 formed by processing is the edge of the quasi-blade 3 close to the back side, the front edge shroud is the edge of the quasi-blade 3 close to the front side and the inner side of the inner ring 3, the rear edge shroud is the edge of the quasi-blade 3 close to the back side and the inner side of the inner ring 3, and the front edge, the rear edge, the front edge shroud and the rear edge shroud mentioned below are the same as the meanings mentioned herein.
Referring to fig. 1, the present invention provides a stator vane ring machining method for machining a workpiece into a stator vane ring, the workpiece including an inner ring 3, an outer ring 1 and a machining region 4 between the inner ring 3 and the outer ring 1, the workpiece having opposite front and back surfaces in a thickness direction, and the workpiece being further formed into an annular workpiece having a large end and a small end before the machining method is performed according to specific needs in actual machining, the machining method including the following steps S1 to S4.
Step S1: and controlling the machining equipment to perform first milling on a machining area 4 between the inner ring 3 and the outer ring 1 of the front surface of the workpiece.
Before the workpiece is actually clamped, marks can be made on the surface of the workpiece, so that the front side and the back side of the workpiece can be conveniently identified and distinguished, and the method is prevented from being confused with the subsequent step of clamping the workpiece.
Specifically, in an alternative embodiment, controlling the machining apparatus to perform the first milling of the machining zone 4 between the inner ring 3 and the outer ring 1 of the front face of the workpiece includes the following steps S11 and S12.
Step S11: position information of the first coordinate origin is acquired.
Step S12: and controlling the processing equipment to process the processing area 4 of the front surface of the workpiece based on the position information of the first coordinate origin so as to form at least part of the structures of the plurality of quasi-vanes 21.
In actual machining, the milling machine needs to acquire the coordinate origin of the workpiece fixed on the fixture, and the purpose of acquiring the coordinate origin of the workpiece is to enable the tool running track of the milling machine to accurately fall on the workpiece during machining. In some specific steps, the workpiece may be manually placed on the first fixture 5 with the right side facing up, and then the first pressing plate cover on the first fixture 5 is manually pressed on the inner ring 3 or the outer ring 1 of the workpiece to clamp, or the workpiece after being processed in advance may be clamped by a manipulator and placed on the first fixture 5, and then the first pressing plate cover of the first fixture 5 is driven to be pressed on the upper surface of the inner ring 3 or the outer ring 1 of the workpiece to realize fixation.
In some embodiments, referring to fig. 5 and 6, in order to facilitate rapid determination of the axis of the workpiece after being horizontally placed, a step surface is formed at the top of the first fixture 5, meanwhile, jacks distributed in an annular shape are formed at the top of the first fixture 5, through holes corresponding to the jacks are formed in the inner ring 3 and the outer ring 1 of the workpiece, the jacks and the through holes pass through the same pin shaft when the workpiece is fixed, and finally, the workpiece is fixed on the first fixture 5 under the pressing action of the first pressing plate.
In one embodiment, the obtaining the position information of the first coordinate origin includes: steps S111 to S113.
Step S111: and acquiring the height H1 of the workpiece fixed on the first height reference plane and the position information of the first positioning point.
Step S112: the height H1 is input into the first preset formula Z0, which is 0+1/2H1, and the height of the first coordinate origin is calculated.
Step S113: and determining the position information of the first coordinate origin by using the position information of the first positioning point and the height of the first coordinate origin, wherein a connecting line between the first coordinate origin and the first positioning point is vertical to the first height reference plane.
The position of the workpiece comprises the position of the workpiece in the horizontal plane and the position of the workpiece in the vertical direction, taking the first clamp 5 in fig. 5 as an example, the workpiece is firstly placed on the annular step surface with the right side facing upwards, then the through hole of the upper outer ring 1 of the workpiece is penetrated through by the pin shaft and connected in the pin hole of the first clamp 5, and finally the pressing plate on the first clamp 5 is pressed on the upper surface of the inner ring 3 of the workpiece to complete the fixation.
Referring to fig. 7, after fixing, the reverse side of the outer ring 1 of the workpiece is used as a height reference plane, then the vertical distance H1 between the upper surface and the lower surface of the outer ring 1 of the workpiece is measured, then Z0 is obtained by the formula Z0 being 0+1/2H1, and Z0 is input into the numerically controlled milling machine, and the height of the first coordinate origin is obtained. Because the outer ring 1 of the workpiece is provided with the through hole, and the outer ring 1 penetrates through the through hole through the pin shaft and is fixed on the clamp, the angle of the workpiece after the angle is fixed is also determined, and even if the workpiece is clamped by turning over the clamp, the angle of the workpiece after the turning over is still unique.
In the course of working, the actual first origin of coordinate that preset origin of coordinate and numerically controlled fraise machine acquireed on the work piece can have certain high error, this kind of error derives from the work piece clamping back, the measuring error of measuring work piece vertical distance, this application is through reducing the number of times of repeated clamping to the work piece, can effectual reduction numerically controlled fraise machine to the positioning error of work piece origin of coordinate to when processing the blade 2 of work piece, avoid producing on the surface of work piece and connect the tool mark, machining precision is also higher.
In some alternative embodiments, the step 12 may include: steps S121 and S122.
Step S121: and controlling the processing equipment to semi-finish the processing area 4 of the front surface of the workpiece to form a leading edge structure of the quasi-blade 21 close to the front surface based on the position information of the first coordinate origin.
Step S122: and controlling the processing equipment to finish the processing area 4 on the front surface of the workpiece based on the position information of the first coordinate origin so as to form a leading edge shroud structure of the quasi-blade 21 close to the inner ring 3.
In one embodiment, after the milling machine determines the first coordinate origin, the milling cutter sequentially mills the front partial blade profile of the blade 2 on the annular surface of the workpiece according to the track, wherein the front edge structure of the quasi-blade 21 is the edge of the blade 2 close to the front on the workpiece, the spindle speed during machining can be 5000-. After the operation of the machining program is finished, the machine tool operates a finish machining program, the milling machine mills the front edge and the front edge peripheral band of the blade 2 generated by machining through the milling cutter, wherein the front edge peripheral band is the inner side of the outer ring 1, the rotating speed of a main shaft during finish machining can be 5000-6000r/min, and the feeding amount can be 2000-2500 mm/min.
Step S2: and after the workpiece is subjected to primary face milling, controlling the machining equipment to perform secondary milling on a machining area 4 between the inner ring 3 and the outer ring 1 of the reverse face of the workpiece, which is opposite to the front face in the thickness direction. The reverse side of the workpiece is milled by the processing equipment, so that the basic shape of a plurality of blades 2 is formed on the workpiece.
In some optional embodiments, the step S22 may include: step S21 and step S22.
Step S21: position information of the second coordinate origin is acquired.
Step S22: and controlling the processing equipment to process a processing area 4 on the reverse side of the workpiece based on the position information of the second coordinate origin, and forming a plurality of quasi-blades 21 arranged at intervals along the inner circumference of the outer ring 1 of the workpiece in the processing area 4 of the workpiece, wherein the inner end of each quasi-blade 21 is connected with the outer circumference of the inner ring 3 of the workpiece, and the outer end of each quasi-blade 21 is connected with the inner circumference of the outer ring 1 of the workpiece.
And after the machine tool manually inputs data by a user, determining the position of a second coordinate origin, wherein the position of the second coordinate origin is the coordinate origin of a processing program of the workpiece after the workpiece is clamped with the reverse side facing upwards. In practical situations, in order to facilitate machining, the workpiece can still adopt the first clamp 5 used in the first clamping, after the reverse side of the first clamp 5 faces upwards, the second coordinate origin on the workpiece is recorded in the numerically-controlled milling machine, then a reverse side milling program is called, and then the workpiece is milled by a cutter of the machine tool.
In one embodiment, the step S21 may include: step S211 to step S213.
Step S211: and acquiring the height H2 of the workpiece fixed on the second height datum plane and the position information of a second positioning point.
Step S212: and inputting the height H2 into a second preset formula Z0 which is 0-1/2H2, and calculating the height of the second coordinate origin.
Step S213: and determining the position information of the second coordinate origin by using the position information of the second positioning point and the height of the second coordinate origin, wherein a connecting line of the second coordinate origin and the second positioning point is vertical to the second height reference plane.
Wherein the step of clamping includes: and (5) clamping the workpiece for the second time by the second clamp 6 with the reverse side of the workpiece facing upwards, and determining a second coordinate origin of the workpiece execution program. The numerical control milling machine is internally provided with a preset processing program for processing the reverse side of a workpiece, after the workpiece is clamped, the milling machine needs to determine a second coordinate origin for executing the program on the workpiece, after the position of the second coordinate origin is identified, the feed track of a program-controlled cutter can accurately fall on the workpiece, and during actual processing, the cutter is prevented from cutting the workpiece in place.
And milling the machining area 4 on the reverse side of the workpiece for the second time, wherein after the milling for the second time, a plurality of quasi-blades 21 which are arranged at intervals along the inner circumference of the outer ring 1 of the workpiece are formed in the machining area 4 of the workpiece, each quasi-blade 21 is provided with two opposite ends, the inner end of each quasi-blade 21 is connected with the outer circumferential surface of the inner ring 3 of the workpiece, the outer end of each quasi-blade 21 is connected with the inner circumferential surface of the outer ring 1 of the workpiece, and the quasi-blades 21 are formed in the machining area 4 of the workpiece in an integrated forming mode.
The clamping device is excellent in that the reverse side faces upwards to perform second-time clamping and the obverse side faces upwards to perform first-time clamping, for example, the first clamp 5 is adopted, repeated fixing of the clamp can be avoided, after clamping, the second datum plane of a workpiece is preferably the same as the first datum plane, the same height reference datum plane can be guaranteed, the original points of coordinates of the workpiece during twice machining of the obverse side and the reverse side are guaranteed to coincide, errors are reduced, when a milling cutter of the machine tool mills the blades 2 on the two sides of the workpiece, tracks correspond to the obverse side and the reverse side of the same blade 2, and machining quality of the two sides of the workpiece is improved.
Referring to fig. 8, when the second clamping and the first clamping use the same fixture, the height reference surfaces used for the first clamping and the second clamping on the workpiece are preferably the same. Since the height reference surface selected for the first time is the back surface of the workpiece, the workpiece is turned over at the moment, the back surface is located above, the height of the second coordinate origin is determined again, 1/2H2 needs to be descended on the height reference surface at the moment, wherein H2 is the vertical distance from the front surface of the outer ring 1 of the workpiece to the back surface of the outer ring 1, and finally the height of the descent 1/2H2 is input into the milling machine. The position information of the second coordinate origin is the angle information of the workpiece, the through hole formed in the outer ring 1 of the workpiece corresponds to the through hole in the clamp and passes through the through hole through the pin shaft, so that the workpiece cannot rotate on the step surface of the clamp, the angle is fixed, and the milling machine determines the angle position of the workpiece.
In one embodiment, the step S22 may include: step S221 and step S222.
Step S221: and controlling the processing equipment to perform semi-finishing on the processing area 4 of the reverse side of the workpiece to form a trailing edge structure of the quasi-blade 21 close to the reverse side based on the position information of the second coordinate origin.
Step S222: and controlling the machining equipment to finish the machining area 4 on the reverse side of the workpiece to form the blade profile structure of the quasi blade 21 based on the position information of the second coordinate origin.
And after the machine tool acquires the position information of the second coordinate origin, operating a processing program to process the rear edges of the quasi-blades 21 on the reverse side of the workpiece, sequentially milling the rear edges of all the quasi-blades 21 on the reverse side into a preset shape, wherein the rotating speed of a main shaft of the milling cutter can be 5000-.
Step S3: the cutting device is controlled to remove the inner ring 3 of the workpiece leaving the inner ends of the plurality of quasi-blades 21 of the workpiece in the air.
After the reverse side of the workpiece is machined, the inner ring 3 of the workpiece may be removed by a wire cutting apparatus (not shown) in preparation for a third clamping. This step can be carried out in a specific manner by removing the workpiece, which has been machined on both sides, from the milling machine, bringing it to the cutting device, and removing the inner ring 3 of the workpiece by means of the cutting device.
Step S4: and controlling the processing equipment to carry out finish machining on the outer surface of each quasi-blade 21 of the workpiece, and processing the quasi-blade 21 into a blade 2.
In one embodiment, the step S4 may include: step S41 and step S42.
Step S41: and acquiring the position information of the third coordinate origin.
Step S42: and controlling an angle head to finish the outer surface of each quasi-blade 21 of the workpiece based on the position information of the third coordinate origin, and processing the quasi-blades 21 into blades 2.
In one embodiment, the step S41 may include: step S411 to step S413.
Step S411: and acquiring the height H3 of the workpiece fixed on the third height datum plane and the position information of a third positioning point.
Step S412: and inputting the height H3 into a third preset formula Z0-1/2H 3 or Z0-0 +1/2H3, and calculating to obtain the height of the third coordinate origin.
Step S413: and determining the position information of the third coordinate origin by using the position information of the third positioning point and the height of the third coordinate origin, wherein a connecting line of the third coordinate origin and the third positioning point is vertical to the third height reference plane.
Referring to fig. 9, the workpiece is clamped on the second clamp 6 by the second pressing plate 62, the second pressing plate 62 can press on the outer ring 1 of the workpiece, the height H3 between the upper surface and the lower surface of the workpiece relative to the outer ring 1 is measured by taking the end surface of the clamp abutting against the reverse surface of the outer ring 1 of the workpiece as a height reference surface, the height of the third coordinate origin is obtained by lifting 1/2H3 from the height reference surface, and then the angular position of the machining area 4 is determined by passing through the pin shaft according to the holes on the outer ring 1 and the clamp. And finally, inputting the position information of the third coordinate origin of the workpiece into the milling machine.
And the machine tool acquires information of the clamped third coordinate origin, runs a finish machining program, calls an angle head for finish machining to align the front edge and the rear edge of the blade 21, and sequentially mills around the thickness profiles of the plurality of quasi-blades 21, wherein during milling, the rotating speed of a main shaft of the angle head is controlled to be 5570r/min, and the feed rate is 1114 mm/min. Finally obtaining the blade 2 with the outer ring 1 meeting the process requirements.
The position information from the first coordinate origin to the third coordinate origin and the position information from the first positioning point to the third positioning point are not limited, and the six coordinate data can be represented by coordinate data in a plane coordinate system or a three-dimensional coordinate system. The planar coordinate system is, for example, a planar rectangular coordinate system, and the three-dimensional coordinate system is, for example, a cartesian rectangular coordinate system, a planar polar coordinate system, a cylindrical coordinate system (or cylindrical coordinate system), a spherical coordinate system (or spherical coordinate system), and the like.
In the present application, the first height reference plane to the third height reference plane may overlap or may not overlap.
The present application further provides an electronic device comprising a memory (not shown) storing a computer program and a processor (not shown) implementing the steps of the above method when the processor executes the computer program.
The memory may include readable media in the form of volatile memory, such as Random Access Memory (RAM) and/or cache memory, and may further include Read Only Memory (ROM).
The memory further stores a computer program, and the computer program can be executed by the processor, so that the processor executes the steps of the method in the embodiment of the present application, and a specific implementation manner of the method is consistent with the implementation manner and the achieved technical effect described in the embodiment of the method, and a part of the content is not described in detail.
The electronic device may also communicate with one or more external devices, such as a keyboard, pointing device, bluetooth device, etc., and may also communicate with one or more devices capable of interacting with the electronic device, and/or with any devices (e.g., routers, modems, etc.) that enable the electronic device to communicate with one or more other computing devices. Such communication may be via an input-output interface. Also, the electronic device may communicate with one or more networks (e.g., a Local Area Network (LAN), a Wide Area Network (WAN), and/or a public network, such as the internet) via a network adapter. The network adapter may communicate with other modules of the electronic device over the bus. It should be appreciated that although not shown in the figures, other hardware and/or software modules may be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage platforms, to name a few.
The present application further provides a processing apparatus, the processing apparatus includes: the clamp comprises a clamp assembly, a machining head and a main shaft (not shown), and further comprises the electronic equipment, wherein the clamp assembly is used for clamping the workpiece on the machining equipment, and the main shaft is used for driving the machining head to machine the workpiece.
The clamp assembly includes: the upper surface of the clamp is provided with a pin hole and an annular step surface used for placing a workpiece, the clamp plate is used for pressing the workpiece on the annular step surface of the clamp, the pin shaft is used for penetrating through holes in the workpiece and the pin hole in the clamp, the clamp assembly is used for clamping the workpiece on processing equipment, a main shaft is used for driving a processing head to process the workpiece, and the electronic equipment is the electronic equipment. The machining head includes a milling cutter, an angle head, and the like. The machining equipment is, for example, a numerically controlled milling machine, the numerically controlled milling machine with electronic equipment runs a machining program in the electronic equipment, a workpiece machining area 4 fixed on the clamp with the front surface facing upwards runs the machining program, the milling cutter on the spindle is controlled to mill the workpiece, the front edge and the front edge surrounding band of the quasi-blade 21 are machined, then the machining area 4 of the workpiece fixed on the clamp with the back surface facing upwards runs the machining program, the rear edge and the rear edge surrounding band of the quasi-blade 21 are milled on the workpiece, and the blade profile is formed. And finally, the machining equipment runs a finish machining program, the finish machining program calls the angle head to finish the blade profile according to the spindle rotating speed and the feeding amount preset by the program, and finally a plurality of blades 2 are formed on the inner circumferential surface of the appearance 1. By operating the processing program, after the accurate blade 21 is formed by the first milling and the second milling, the front surface and the back surface of the blade 21 are aligned by the angle head to carry out primary finish machining, so that the blade connecting marks generated on the blade 2 during the finish machining can be reduced.
Although embodiments of the present invention have been shown and described, it will be understood that the above embodiments are exemplary and not to be construed as limiting the present invention, and that those skilled in the art may make changes, modifications, substitutions and alterations to the above embodiments without departing from the spirit and scope of the present invention, all such changes being within the scope of the appended claims.
Claims (10)
1. A method for machining a stator blade ring, comprising:
controlling a processing device to perform first milling on a processing area between an inner ring and an outer ring of the front face of a workpiece;
controlling the processing equipment to perform secondary milling on a processing area between an inner ring and an outer ring of a reverse side of the workpiece, which is opposite to a front side in the thickness direction;
controlling a cutting device to remove an inner ring of the workpiece, and enabling inner ends of a plurality of quasi-blades of the workpiece to be suspended;
and controlling the machining equipment to perform finish machining on the outer surface of each quasi blade of the workpiece, and machining the quasi blades into blades.
2. The machining method according to claim 1, wherein the controlling the machining apparatus to perform the first milling of the machining region between the inner ring and the outer ring of the front surface of the workpiece includes:
acquiring position information of a first coordinate origin;
and controlling the processing equipment to process a processing area of the front surface of the workpiece based on the position information of the first coordinate origin so as to form at least part of structures of a plurality of quasi-blades.
3. The machining method according to claim 2, wherein the acquiring of the position information of the first origin of coordinates includes:
acquiring the height H1 of the workpiece fixed on the first height reference plane and the position information of a first positioning point;
inputting the height H1 into a first preset formula Z0 which is 0+1/2H1, and calculating to obtain the height of a first coordinate origin;
and determining the position information of the first coordinate origin by using the position information of the first positioning point and the height of the first coordinate origin, wherein a connecting line of the first coordinate origin and the first positioning point is vertical to the first height reference plane.
4. The machining method according to claim 2, wherein the controlling the machining apparatus to machine a machining area of the front surface of the workpiece based on the position information of the first origin of coordinates includes:
controlling the machining equipment to semi-finish a machining area of the front face of the workpiece to form a leading edge structure of a quasi-blade close to the front face based on the position information of the first coordinate origin;
and controlling the processing equipment to finish the processing area of the front surface of the workpiece to form a leading edge shroud structure of the quasi-blade, which is close to the inner ring, based on the position information of the first coordinate origin.
5. The machining method according to claim 1, wherein controlling the machining apparatus to perform the second milling of the machining region between the inner ring and the outer ring of the reverse side of the workpiece opposite to the front side in the thickness direction comprises:
acquiring position information of a second coordinate origin;
and controlling the processing equipment to process a processing area on the reverse side of the workpiece based on the position information of the second coordinate origin so as to form a plurality of quasi-blades arranged at intervals along the inner circumference of the outer ring of the workpiece in the processing area of the workpiece, wherein the inner end of each quasi-blade is connected with the outer circumference of the inner ring of the workpiece, and the outer end of each quasi-blade is connected with the inner circumference of the outer ring of the workpiece.
6. The machining method according to claim 5, wherein the acquiring of the position information of the second origin of coordinates includes:
acquiring the height H2 of the workpiece fixed on the second height datum plane and the position information of a second positioning point;
inputting the height H2 into a second preset formula Z0-0-1/2H 2, and calculating to obtain the height of a second coordinate origin;
determining the position information of the second coordinate origin by using the position information of the second positioning point and the height of the second coordinate origin, wherein a connecting line of the second coordinate origin and the second positioning point is vertical to the second height reference plane;
the controlling the processing device to process a processing area of the reverse side of the workpiece based on the position information of the second coordinate origin includes:
controlling the processing equipment to perform semi-finishing on a processing area of the reverse side of the workpiece to form a trailing edge structure of a quasi-blade close to the reverse side based on the position information of the second coordinate origin;
and controlling the processing equipment to finish the processing area of the reverse side of the workpiece to form a quasi-blade profile structure based on the position information of the second coordinate origin.
7. The machining method according to claim 1, wherein the controlling the machining apparatus to finish the outer surface of each quasi-vane of the workpiece includes:
acquiring position information of a third coordinate origin;
and controlling an angle head to finish the outer surface of each quasi blade of the workpiece based on the position information of the third coordinate origin so as to machine the quasi blades into blades.
8. The machining method according to claim 7, wherein the acquiring of the position information of the third origin of coordinates includes:
acquiring the height H3 of the workpiece fixed on the third height datum plane and the position information of a third positioning point;
inputting the height H3 into a third preset formula Z0-1/2H 3 or Z0-0 +1/2H3, and calculating to obtain the height of a third coordinate origin;
and determining the position information of the third coordinate origin by using the position information of the third positioning point and the height of the third coordinate origin, wherein a connecting line of the third coordinate origin and the third positioning point is vertical to the third height reference plane.
9. An electronic device, characterized in that the electronic device comprises a memory storing a computer program and a processor implementing the steps of the method according to any of claims 1-8 when the processor executes the computer program.
10. A processing apparatus, comprising: a chuck assembly for clamping the workpiece to the machining apparatus, a machining head and a spindle for driving a machining head to machine the workpiece, the electronic apparatus of claim 9;
the clamp assembly includes:
the clamp comprises a clamp, a pressing plate and a pin shaft, wherein the upper surface of the clamp is provided with a pin hole and an annular step surface for placing a workpiece, the pressing plate is used for pressing the workpiece on the annular step surface of the clamp, and the pin shaft is used for penetrating through a through hole in the workpiece and the pin hole in the clamp.
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| CN114799754B (en) | 2023-02-24 |
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