CN114211199B - Combined machining method for two-half thin-wall part (stationary blade) - Google Patents
Combined machining method for two-half thin-wall part (stationary blade) Download PDFInfo
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- CN114211199B CN114211199B CN202210001206.0A CN202210001206A CN114211199B CN 114211199 B CN114211199 B CN 114211199B CN 202210001206 A CN202210001206 A CN 202210001206A CN 114211199 B CN114211199 B CN 114211199B
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- stationary
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- 238000003754 machining Methods 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 17
- 230000003068 static effect Effects 0.000 claims abstract description 97
- 238000005553 drilling Methods 0.000 claims abstract description 25
- 238000007514 turning Methods 0.000 claims abstract description 18
- 244000126211 Hericium coralloides Species 0.000 claims abstract description 14
- 239000011265 semifinished product Substances 0.000 claims description 7
- 238000004080 punching Methods 0.000 claims description 4
- 238000005259 measurement Methods 0.000 claims description 3
- 230000009191 jumping Effects 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 5
- 238000012797 qualification Methods 0.000 abstract description 4
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 6
- 238000003825 pressing Methods 0.000 description 6
- 210000000078 claw Anatomy 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000004973 liquid crystal related substance Substances 0.000 description 2
- 238000003672 processing method Methods 0.000 description 2
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 239000002173 cutting fluid Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
Classifications
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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
- B23P13/00—Making metal objects by operations essentially involving machining but not covered by a single other subclass
-
- 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
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
-
- 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
-
- 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
- B23Q2703/00—Work clamping
- B23Q2703/02—Work clamping means
- B23Q2703/10—Devices for clamping workpieces of a particular form or made from a particular material
Abstract
The invention relates to the technical field of machining, in particular to a combined machining method of two-half thin-wall parts (stationary blades); assembling the two half stationary blades on the stationary ring; pin holes on the circumferences of the stator blade and the stator ring which are assembled; finish turning is carried out on the assembled stationary blade and the sinking table, the outer circular inclined surface, the end surface and the comb tooth air seal groove of the stationary ring; measuring the precision of the processed stator blade and the stator ring to obtain qualified stator blade and stator ring; drilling a threaded hole on the qualified static ring; and removing burrs on the static ring which is qualified and drilled, and processing and manufacturing the static ring while detecting the precision, thereby solving the problems of low qualification rate and unable quality guarantee of the production and processing of the static ring in the prior processing technology.
Description
Technical Field
The invention relates to the technical field of machining, in particular to a combined machining method for a two-half thin-wall part (stationary blade).
Background
The stator blade is a core part in a certain type of air turbine, the part is arranged on an air turbine shell, the blades of the stator blade are used for controlling air flow during working, the working environment is high temperature and high pressure, high requirements are set for the strength of the part, meanwhile, high assembly and matching requirements are set for the part and surrounding parts, particularly, high precision requirements of the thickness, diameter, coaxiality, flatness, perpendicularity and the like of the part must be ensured, otherwise, friction and abrasion between the parts can be caused during working, the air tightness between the shell and a rotor part sleeve is damaged, and safety accidents are caused.
The part is a double-layer two-half thin-wall part (stationary blade) and comprises an inner ring and a stationary ring, wherein the inner ring is a stationary blade with blades, the upper and lower two-half stationary blades are not connected by any screw, and the stationary ring is a stationary ring with inner hole inclination and outer circle inclination. The stator blade is fixed by clamping the inclination of an inner hole of the stator blade by the inclination of 25 circumferential pins driven into the outer circle of the stator blade, the dimensional accuracy requirement of the part is high, the thin-wall part is easy to deform in the machining process, the inclination of the outer circle of the stator blade exists, the clamping and alignment in the machining process have great difficulty, the form and position tolerance of 0.01mm of the coaxiality of the inner hole and 0.01mm of the perpendicularity of the end face required by a drawing cannot be effectively ensured, and the qualification rate of the stator blade in machining production is reduced.
Disclosure of Invention
The invention aims to provide a combined machining method for two-half thin-wall parts (stationary blades), and aims to solve the problems that in the prior art, the qualification rate of production and machining of stationary blades is low and the quality cannot be guaranteed.
In order to achieve the above purpose, the invention provides a combined processing method of two-half thin-wall parts (stationary blades),
assembling the two half stationary blades on the stationary ring;
pin holes on the circumferences of the stator blade and the stator ring which are assembled;
finish turning is carried out on the static blade completed by the pin hole, the sinking table of the static ring, the outer circular inclined surface, the end surface and the comb tooth air seal groove;
measuring the precision of the processed stator blade and the stator ring to obtain qualified stator blade and stator ring;
drilling a threaded hole on the qualified static ring;
and removing burrs on the static ring which is finished by the qualified static blades and the drilled static ring. Wherein, the liquid crystal display device comprises a liquid crystal display device,
the specific mode of assembling the two half stationary blades on the stationary ring is as follows: acquiring two halves of the stationary blade and the stationary ring;
and loading the two halves of the static blades into the static ring, and adjusting the positions of the two halves of the static blades on the static ring.
The pin holes on the circumferences of the stator blade and the stator ring after the assembly is specifically: positioning the combined clamp to fix the stationary ring;
drilling cylindrical pin holes on the circumferences of the fixed stationary ring and the fixed stationary blade, and inserting cylindrical pins into the cylindrical pin holes;
punching holes on the matched tail ends of the cylindrical pin and the static ring.
The fine turning machining specific mode of the static blade, the sinking table of the static ring, the outer circular inclined surface, the end surface and the comb tooth air seal groove which are completed by the pin holes is as follows: clamping the stationary blade and the stationary ring completed by the pin holes by using a tool;
and carrying out finish turning on the clamped fixed blades, the outer circular inclined surfaces of the fixed rings, the end surfaces and the comb tooth air seal grooves.
The concrete mode of drilling the threaded holes on the qualified static ring is as follows: raising the qualified static ring;
and confirming a drilling point of the static ring, and drilling a threaded hole on the static ring with the height being increased based on the drilling point.
The invention relates to a combined processing method of two-half thin-wall parts (stationary blades), which comprises the steps of assembling the two-half stationary blades on a stationary ring; firstly, taking out the stator blade semi-finished product (left half and right half) and the stator ring semi-finished product (the stator ring is connected into a whole through screws), stably loading the two halves of the stator blade into the stator ring, aligning the middle planes of the stator blade and the stator ring and keeping the stator blade and the stator ring in the same straight line, and forming pin holes on the circumferences of the stator blade and the stator ring after the stator blade and the stator ring are assembled; finish turning is carried out on the assembled stationary blade and the sinking table, the outer circular inclined surface, the end surface and the comb tooth air seal groove of the stationary ring; measuring the precision of the processed stator blade and the stator ring to obtain qualified stator blade and stator ring; drilling a threaded hole on the qualified static ring; the static ring is characterized in that burrs on the static ring are removed after qualified static blades and drilling are finished, because the parts are made of titanium alloy, all drilling bits and reamer materials required by machining are made of hard alloy materials with special coatings, the parts are of double-layer two-half structures, the parts are directly clamped by three claws to cause stress deformation of the parts, and after the outer circular inclined surface is machined, the parts are difficult to clamp and cannot be aligned, special vehicle tools are designed and manufactured to solve the problems that the static ring is clamped by the special vehicle tools, the parts are prevented from being machined and deformed, the special measuring tools are convenient to detect the precision of the static blades and the precision of the static ring, and the precision is detected while machining and manufacturing, so that the problems that the qualification rate of the static blades is low and the quality cannot be guaranteed in the existing machining technology are solved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view of a two-half thin-walled part vane and stator ring combination.
FIG. 2 is a schematic diagram of the assembly of a stator blade and a stator ring of a two-half thin-walled part.
FIG. 3 is a schematic view of a stator blade and stator ring insert cylindrical pin hole of a two-half thin-walled part provided by the invention.
Fig. 4 is a schematic diagram of a tool structure of a special-purpose vehicle for static vanes and static rings of two-half thin-wall parts.
FIG. 5 is a part clamping diagram when the static blade and the static ring of the two-half thin-wall part are processed to form an end face and a comb tooth air seal groove.
FIG. 6 is a schematic view of a stator blade and a stator ring of a two-half thin-walled part.
FIG. 7 is a part clamping diagram of a two-half thin-wall part stator blade and a stator ring during processing of an outer circular inclined plane of the stator ring.
FIG. 8 is a schematic diagram of a stator blade and stator ring measuring tool for a two-half thin-walled part.
FIG. 9 is a schematic diagram of a two-half thin-walled part vane and stator ring measurement tool according to the present invention.
FIG. 10 is a flow chart of a method for machining a two-half thin-wall part (stationary blade) in a combined manner.
FIG. 11 is a flowchart illustrating a particular manner in which a fitter assembles a static vane ring.
FIG. 12 is a flow chart of a particular manner of pin holes on the vane and the circumference of the stationary ring.
FIG. 13 is a flow chart of a specific mode of finely turning the stationary blade, the stationary ring sinking table, the inclined surface, the end surface and the inner air seal groove by using a special turning tool.
FIG. 14 is a flowchart of a specific embodiment of the machining of the vane and the stator ring attachment hole, and the threaded hole.
Detailed Description
Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.
In the description of the present invention, it should be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like indicate orientations or positional relationships based on the orientation or positional relationships shown in the drawings, merely to facilitate describing the present invention and simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, in the description of the present invention, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.
Referring to fig. 1 to 14, the invention provides a method for machining a two-half thin-wall part (stationary blade) in a combined manner, which comprises the following steps:
s1, assembling two half stationary blades on a stationary ring;
the specific mode is as follows: s11, acquiring two halves of the stationary blade and the stationary ring;
firstly, the stator blade semi-finished product (left half and right half) and the stator ring semi-finished product (the stator ring is connected into a whole through screws) are obtained, the surfaces of inner holes on which the stator ring and the stator blade are installed are inclined planes, the inclination is about 3.55 degrees, the diameter of the small end of each inclined plane is phi 283, and the diameter of the large end of each inclined plane is phi 288.
S12, mounting the two halves of the stator blade into the stator ring, and adjusting the positions of the two halves of the stator blade on the stator ring
And (3) stably loading the two halves of static blades into the static ring, aligning the middle planes of the static blades and the static ring and enabling the static blades and the middle planes of the static ring to be in the same straight line, wherein when the static ring is installed, the large end of the static ring is upwards arranged on a horizontal workbench, the small end of the static blade is downwards clamped into the static ring along an inclined plane, and when the end faces of the static blades are flush with the end faces of the static ring, the static ring is installed in place, as shown in fig. 2.
S2, pin holes are formed in the circumferences of the stator blades and the stator rings which are assembled;
the specific mode is as follows: s21, positioning the combined clamp to fix the stationary ring;
and positioning by the large end face of the stationary ring, and overlapping the combined clamp. S22, cylindrical pin holes are drilled on the circumferences of the stationary ring and the stationary blade after fixing, and cylindrical pins are inserted into the cylindrical pin holes.
Aligning the middle split surface, drilling 25 phi 4 cylindrical pin holes on the circumferences of the combined static blade and static ring, controlling the distance between the center and the large end surface of the static ring during drilling (because the static blade and the static ring are semi-finished products and the end surface is left with 1.5mm allowance), placing phi 4 cylindrical pins of GB/T119.2-2000 into a refrigerating chamber 4 hours before 20 drilling processes, improving the phenomenon of blocking when the pins are inserted into the pin holes, immediately inserting a 4X 30 cylindrical pin with the standard of GB/T119.2-2000 after the drilling and reaming is completed on the first phi 4 cylindrical pin hole, as shown in figure 3, then re-reaming the rest 24 phi 4 pin holes, and then inserting the rest 24 phi 4 cylindrical pins with the standard of GB/T119.2-2000 after the drilling and reaming is completed. When the pin is inserted, the residual cutting fluid in the pin hole needs to be dried, the pin needs to be completely sunk into the pin hole, the hole opening of the pin hole is not allowed to be overflowed, and the cutter is prevented from being damaged when the excircle inclination is finely turned.
S23, punching holes on the matched tail ends of the cylindrical pin and the static ring.
And (5) punching a sample on the matched tail end of the cylindrical pin and the static ring to perform anti-loosening treatment.
S3, finish turning is carried out on the static blade completed by the pin hole, the sinking table of the static ring, the outer circular inclined surface, the end surface and the comb tooth air seal groove;
the specific mode is as follows: s31, clamping the stationary blade and the stationary ring which are completed by the pin holes by using a tool;
the static ring is clamped by the soft three claws, an inner hole of the static ring is aligned, the static blade is turned, the end face of the static ring and the sinking table are turned, a special-purpose turning tool is used for clamping parts, and as shown in fig. 4, the parts of the tool are required to be clamped: the special tool using method comprises the following steps of a base, an inner pressing plate, GB5780-2000 hexagon head bolts M30X 120 and GB95-85 washers: the three-jaw chuck clamps the base, and places the part on the base, positions the part through a boss on the base (the diameter of the boss is the same as the size of the static ring phi A), and is lapped with an inner pressing plate (because the vane of the static vane is thinner, and the two halves of static vanes are not connected by any screw, if the inner pressing plate is directly pressed on the static vane, the vane is deformed and the two halves of static vanes are opened from the middle division surface, so that the inner pressing plate needs to be pressed on the end surface of the static ring), the inner pressing plate is connected with the base by using a hexagon head bolt and a gasket, the part is tightly pressed by screwing the bolt, and when the inclined plane of the static ring is processed, the jump of the static ring of the inner pressing plate needs to be aligned to be not more than 0.03mm.
S32, finish turning is carried out on the clamped fixed blade, the outer circular inclined surface of the fixed ring, the end surface and the comb tooth air seal groove;
the part adopts special-purpose vehicle instrument clamping, and alignment terminal surface and hole run-out have been no more than 0.05mm, utilizes finish turning sub-unit still ring inclined plane to size, finish turning broach air seal groove and sub-unit another terminal surface again, and the part clamping is like the required frock spare part of figure 5 clamping: base, fastening ring, external pressure plate, GB70-85 inner hexagon screw M5X 30, GB5780-2000 inner hexagon bolt M8X 30, GB95-85 gasket, using method: go up the clamping ring, be connected clamping ring and base through hexagon socket head cap screw, take the external clamp plate, screw up hexagon socket head cap screw and make the external clamp plate compress tightly the part (external clamp plate compresses tightly the position and is located the step position on the quiet ring excircle), note: the internal pressure plate can be removed after the part is confirmed to be pressed, and the inner hole and the end face of the machined stator blade need to be aligned before the comb tooth ring groove of the stator blade is machined, and the runout is not more than 0.03mm.
S4, measuring the static blade and the static ring precision by using specially manufactured ranging;
and measuring the precision of the static blade and the static ring inclined plane to the size, the comb tooth air seal groove and the other end face of the assembly by using a special measuring tool, wherein the using method of the measuring tool comprises the following steps of: the tool is carved with T (through) end and Z (stop) end symbols, when in measurement, the T end is downwards firstly, the tool passes through a sinking table with the diameter phi A, if the tool cannot pass through, the phi A size is not machined in place, the tool still has machining allowance, the tool needs to be continuously machined, if the tool can pass through, the Z end is downwards again, the tool can see whether the tool can pass through the sinking table, if the Z end cannot pass through the sinking table, the phi A size is machined in place, and the tool meets the requirements ofTolerance requirements, if the Z-terminal can pass through the countersink, indicate that the phi A dimension is machined in place, but does not meet +.>Tolerance requirements, namely: by a measuring method that a special measuring tool can pass through the T end and can not pass through the Z end, the +.>Whether the dimension processing meets the requirement or not effectively solves the problem that the conventional measuring tool cannot detect.
S5, drilling a threaded hole on the qualified static ring;
the specific mode is as follows: s51, heightening the qualified static ring;
s52, confirming a drilling point of the static ring, and drilling a threaded hole on the static ring with the height being increased based on the drilling point.
The centering part is divided into a surface and the jump of the machined inner hole is not more than 0.05mm, and a threaded hole system for connecting the static ring with the rest parts is machined, as shown in figure 6.
S6, removing burrs on the static blades and the static ring with the drilled holes being qualified.
The bench worker removes the stator blade and the stator ring burrs using a tool coated with a special coating.
The above disclosure is only a preferred embodiment of the present invention, and it should be understood that the scope of the invention is not limited thereto, and those skilled in the art will appreciate that all or part of the procedures described above can be performed according to the equivalent changes of the claims, and still fall within the scope of the present invention.
Claims (3)
1. The combined machining method of the stator blade of the two-half thin-wall part is characterized by comprising the following steps of:
assembling the two half stationary blades on the stationary ring;
the specific mode is as follows: two halves of the stationary blade and the stationary ring are acquired,
firstly, the stator blade semi-finished product and the stator ring semi-finished product are obtained, and the surfaces of inner holes of the stator ring and the stator blade are inclined planes;
loading two halves of the static blades into the static ring, and adjusting the positions of the two halves of the static blades on the static ring;
the stator blade of the two halves is stably arranged in the stator ring, the center dividing surfaces of the stator blade and the stator ring are aligned and positioned in the same straight line, when the stator blade is installed, the large end of the stator ring is upwards arranged on a horizontal workbench, the small end of the stator blade is downwards clamped into the stator ring along an inclined plane, and when the end face of the stator blade is flush with the end face of the stator ring, the stator blade is installed in place;
pin holes on the circumferences of the stator blade and the stator ring which are assembled;
finish turning is carried out on the static blade completed by the pin hole, the sinking table of the static ring, the outer circular inclined surface, the end surface and the comb tooth air seal groove, and the concrete mode is as follows: clamping the stationary blade and the stationary ring completed by the pin holes by using a tool;
finish turning is carried out on the clamped fixed blades, the outer circular inclined surfaces of the fixed rings, the end surfaces and the comb tooth air seal grooves;
clamping the part by using a special turning tool, aligning the end face and jumping the turned inner hole by not more than 0.05mm, finely turning the static ring inclined plane to the size by using the fine turning assembly, finely turning the comb tooth air seal groove and the other end face of the assembly;
measuring the precision of the processed stator blade and the stator ring to obtain qualified stator blade and stator ring;
and measuring the precision of the static blade and the static ring inclined plane to the size, the comb tooth air seal groove and the other end face of the assembly by using a special measuring tool, wherein the using method of the measuring tool comprises the following steps of: the tool is carved with T end and Z end symbols, when in measurement, the T end is firstly downwards passed through a sinking table with the diameter phi A, if the T end cannot pass through, the phi A size is not machined in place, the machining allowance still exists, the machining needs to be continued, if the T end can pass through, the Z end is downwards again, whether the Z end can pass through the sinking table is judged, if the Z end cannot pass through the sinking table, the phi A size is machined in place, and the requirements are metTolerance requirements, if the Z-terminal can pass through the countersink, indicate that the phi A dimension is in place, but does not meetTolerance requirements;
drilling a threaded hole on the qualified static ring;
and removing burrs on the static ring which is finished by the qualified static blades and the drilled static ring.
2. The method for combined machining of stationary vanes of a two-half thin-walled part according to claim 1, characterized in that,
the pin holes on the circumferences of the stator blade and the stator ring after the assembly is specifically as follows: positioning the combined clamp to fix the stationary ring;
drilling cylindrical pin holes on the circumferences of the fixed stationary ring and the fixed stationary blade, and inserting cylindrical pins into the cylindrical pin holes;
punching holes on the matched tail ends of the cylindrical pin and the static ring.
3. The method for combined machining of stationary vanes of a two-half thin-walled part according to claim 1, characterized in that,
the concrete mode of drilling the threaded hole on the qualified static ring is as follows: raising the qualified static ring;
and confirming a drilling point of the static ring, and drilling a threaded hole on the static ring with the height being increased based on the drilling point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001206.0A CN114211199B (en) | 2022-01-04 | 2022-01-04 | Combined machining method for two-half thin-wall part (stationary blade) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210001206.0A CN114211199B (en) | 2022-01-04 | 2022-01-04 | Combined machining method for two-half thin-wall part (stationary blade) |
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| Publication Number | Publication Date |
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| CN114211199A CN114211199A (en) | 2022-03-22 |
| CN114211199B true CN114211199B (en) | 2023-10-27 |
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| CN114211199A (en) | 2022-03-22 |
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