CN106002112A - Turbine blade ceramic core soft core support machining method - Google Patents
Turbine blade ceramic core soft core support machining method Download PDFInfo
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- CN106002112A CN106002112A CN201610374616.4A CN201610374616A CN106002112A CN 106002112 A CN106002112 A CN 106002112A CN 201610374616 A CN201610374616 A CN 201610374616A CN 106002112 A CN106002112 A CN 106002112A
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- soft
- tao xin
- soft stud
- stud
- blade
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
- B23P15/02—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass turbine or like blades from one piece
Abstract
The invention discloses a turbine blade ceramic core soft core support machining method, and aims at solving the technical problem that the conventional methods are bad in fitting point consistency between soft core supports and ceramic cores. The technical scheme is that the method comprises the following steps: determining a soft core support point at a blade profile center position at 1/3 of the distance between a blade body and a blade tip of a ceramic core; uniformly arranging two soft core support points on a blade profile curve at 2/3 of the distance between the blade body and the blade tip of the ceramic core; making a cylinder with a diameter of 4mm by taking a soft core support position point as the center and taking a Y-axis direction as an axis; clipping the column by utilizing the curved surface of the ceramic core and the curved surface of a wax mould as boundaries, wherein a geometric body between the two curved surfaces is a soft core support geometric model; and carrying out machining by adopting a VMC-850 machine tool and a hard alloy ball-end mill according to a machining program programmed by a soft core support geometric structure, so that the machining preparation of a wax soft core support is realized. According to the method disclosed in the invention, the fitting point consistency between the soft core supports and the ceramic cores is improved.
Description
Technical field
The present invention relates to a kind of Tao Xin soft stud processing method, particularly to a kind of turbo blade Tao Xin soft stud processing side
Method.
Background technology
Aero-engine hollow turbine vane essence casts forming period length, wall thickness accuracy is on the low side, percent defective is high, always system
One of bottleneck that about the new machine of China is developed.
Prepare the qualified essence casting wax pattern of wall thickness accuracy and be to ensure that the most important condition of hollow turbine vane wall thickness.Essence casting wax pattern wall
Thickness relies primarily on Tao Xin and ensures with accurately mating of wax molds.For controlling Tao Xin position in wax molds,
Stud need to be used Tao Xin to be positioned and supports, by wax material pair in the counterforce counteraction wax pattern cavity filling process of stud
The active force of Tao Xin, thus reduce Tao Xin deformation and drift, control the wall thickness deviation distribution of essence casting wax pattern.At present, core
Support has metal material stud and the soft stud of waxiness.Because metal stud is in mould matched moulds and wax-pattern pressing process, Ke Nengyin
Extruding causes Tao Xin to rupture, thus frequently with the soft stud of the waxiness being made up of soft wax to realize Tao Xin at wax in actual production
Location in mould.
" " complicated hollow turbine vane precisely casting wax mold Tao Xin soft stud location technology " [J] Cui Kang, Wang Wenhu is special for document
Kind of casting and non-ferrous alloy 2013.33 (1) p53-56 " point out space layout and the structure chi of current Tao Xin setting element
The very little Experience Design that relies primarily on completes, and owing to being theoretically unsound, frequently results in Tao Xin location imperfect, and discloses
The location technology of the soft stud of Tao Xin waxiness, by setting up Tao Xin position error TRANSFER MODEL, Optimal Method of Select Locating algorithm,
Accurately give Tao Xin positioning layout point.And in terms of the preparation of the soft stud of waxiness, domestic not yet have particular study to see
All reports, and actual production is usually the rectangle wax disk(-sc) of fixed thickness, wax disk(-sc) is bonded on ceramic core by the used time,
During compacting essence casting wax pattern, stud is wrapped up by wax material and combines together with essence casting wax pattern.Owing to essence casting wax pattern wall thickness is not
It is uniformly distributed, takes the rectangle wax disk(-sc) of fixed thickness, stud will be caused not fit with wax molds completely, thus shadow
Ring wax pattern wall thickness accuracy, and soft stud needs workman's manual operation, soft stud and Tao Xin laminating points with Tao Xin laminating process
Concordance is poor, and production efficiency is low.
Summary of the invention
In order to overcome the deficiency of the soft stud of existing method and Tao Xin laminating points concordance difference, the present invention provides a kind of turbine leaf
Sheet Tao Xin soft stud processing method.The method determines one in Tao Xin blade blade profile center at blade tip position 1/3
Soft stud point, is evenly arranged two soft stud points at Tao Xin blade, with soft core at blade tip position 2/3 in blade profile curve
Centered by support location point, Y direction is axis, does the cylinder of diameter of phi 4mm, utilizes Tao Xin curved surface and wax molds
Curved surface is border cuts cylinder, and between two curved surfaces, geometrical body is soft stud geometric model；According to soft stud geometry
The processor of establishment, uses VMC-850 lathe, and hard alloy bulb milling cutter is processed, it is achieved the soft core of waxiness
Prepared by the processing of support.Improve the concordance of soft stud and Tao Xin laminating points.
The technical solution adopted for the present invention to solve the technical problems: a kind of turbo blade Tao Xin soft stud processing method,
It is characterized in comprising the following steps:
Step 1, determine leaf basin, blade back soft stud position.
Tao Xin blade segment length is 75mm, and print point cross section I and cross section II height are respectively the 1/3 and 2/3 of blade,
Section line is projected to XZ plane, obtains cross section I and cross section II.Cross section I is along the intersection of Y-direction Yu Tao Xin leaf basin
Trisection, obtains a Q1、Q2, halve along the intersection of Y-direction with Tao Xin leaf basin, obtain a Q in cross section II3, point
Q1、Q2、Q3It is Tao Xin leaf pelvic part position soft stud print point.Cross section I is along the intersection three of Y direction Yu Tao Xin blade back
Decile, obtains a Q4、Q5, halve along the intersection of Y direction with Tao Xin blade back, obtain a Q in cross section II6, point
Q4、Q5、Q6It is Tao Xin blade back position soft stud print point.
Step 2, determine leaf basin, blade back soft stud geometry.
Centered by some Q1, Q2, Q3, Y-axis is that axis makees Φ 4mm cylinder respectively, utilizes Tao Xin leaf basin profile
With wax molds profile, cylinder is carried out cutting, obtain leaf basin soft stud geometry.In with some Q4, Q5, Q6 being
The heart, Y-axis is that axis makees Φ 4mm cylinder respectively, utilizes Tao Xin blade back profile to carry out cylinder with wax molds profile
Cutting, obtains blade back soft stud geometry.
Step 3, analyze soft stud material, select Digit Control Machine Tool, fixture, cutter, technological parameter.
Soft stud material is essence casting wax material, has less coefficient of thermal expansion and shrinkage factor, higher thermostability；According to
Tao Xin size, soft stud is set as the cylinder of Φ 4mm；
Soft stud is parallel with Tao Xin Y-axis, in conjunction with Tao Xin overall structure, selects: lathe is three axis numerically controlled machine, according to
Soft stud diameter, determines that tool diameter≤1mm, selection cutter are carbide-tipped milling cutter, and its cutter Probe-radius is
0.5mm。
Prepared by step 4, soft stud blank.
Use neutral detergent to add water cleanings, get rid of wicking surface oil film of making pottery；Selected soft stud wax material is passed through water
Bath heating, controls wax liquid temperature less than 100 DEG C；Wax-coated liquid near soft stud position, Wax-coated liquid size is big
In soft stud size, in case digital control processing surplus.
Step 5, soft stud digital control processing.
Utilize common CAD/CAM software to be programmed, and Path is carried out simulating, verifying.Add what man-hour selected
Lathe is: VMC-850, and the cutter of selection is: hard alloy bulb milling cutter, and lathe selection of speed is 1300r/min,
Feed speed is 800mm/min.
The invention has the beneficial effects as follows: the method determines one in Tao Xin blade blade profile center at blade tip position 1/3
Individual soft stud point, is evenly arranged two soft stud points at Tao Xin blade, with soft at blade tip position 2/3 in blade profile curve
Centered by stud location point, Y direction is axis, does the cylinder of diameter of phi 4mm, utilizes Tao Xin curved surface and wax pattern mould
Tool curved surface is border cuts cylinder, and between two curved surfaces, geometrical body is soft stud geometric model；Tie according to soft stud geometry
The processor of structure establishment, uses VMC-850 lathe, and hard alloy bulb milling cutter is processed, it is achieved waxiness is soft
Prepared by the processing of stud.Improve the concordance of soft stud and Tao Xin laminating points.Test result shows: diameter of phi 4mm
The soft stud of waxiness, stud and wax-pattern, the laminating gap of Tao Xin are reduced to below 0.5mm by maximum 2mm；Use
Numerical control positioning and process technology, each Tao Xin soft stud preparation time saves about 1.5 hours.
With detailed description of the invention, the present invention is elaborated below in conjunction with the accompanying drawings.
Accompanying drawing explanation
Fig. 1 is the flow chart of turbo blade Tao Xin of the present invention soft stud processing method.
Fig. 2 is Tao Xin localized cross-sectional schematic diagram in turbo blade Tao Xin of the present invention soft stud processing method.
Fig. 3 is turbo blade Tao Xin of the present invention soft stud processing method middle period basin soft stud point schematic diagram.
Fig. 4 is blade back soft stud point schematic diagram in turbo blade Tao Xin of the present invention soft stud processing method.
Fig. 5 is turbo blade Tao Xin of the present invention soft stud processing method middle period basin soft stud geometry schematic diagram.
Fig. 6 is blade back soft stud geometry schematic diagram in turbo blade Tao Xin of the present invention soft stud processing method.
Detailed description of the invention
With reference to Fig. 1-6.Turbo blade Tao Xin of the present invention soft stud processing method specifically comprises the following steps that
Step 1, determine leaf basin, blade back soft stud position.
In the present embodiment, Tao Xin blade segment length is 75mm, and print point cross section I and cross section II height are respectively blade
1/3 and 2/3, section line is projected to XZ plane, obtains cross section I and cross section II, cross section I is along Y-direction and Tao Xin
The intersection trisection of leaf basin, obtains a Q1、Q2, halve along the intersection of Y-direction with Tao Xin leaf basin, obtain in cross section II
To a Q3, put Q1、Q2、Q3It is Tao Xin leaf pelvic part position soft stud print point.Cross section I is along Y direction and Tao Xin
The intersection trisection of blade back, obtains a Q4、Q5, halve along the intersection of Y direction with Tao Xin blade back, obtain in cross section II
To a Q6, put Q4、Q5、Q6It is Tao Xin blade back position soft stud print point.
Step 2, determine leaf basin, blade back soft stud geometry.
Centered by some Q1, Q2, Q3, Y-axis is that axis makees Φ 4mm cylinder respectively, utilizes Tao Xin leaf basin profile
With wax molds profile, cylinder is carried out cutting, i.e. can get leaf basin soft stud geometry.With some Q4, Q5, Q6
Centered by, Y-axis is that axis makees Φ 4mm cylinder respectively, utilizes Tao Xin blade back profile and wax molds profile to cylinder
Carry out cutting, i.e. can get blade back soft stud geometry.
Step 3, analyze soft stud material, select Digit Control Machine Tool, fixture, cutter, technological parameter.
According to practical situation, soft stud material is essence casting wax material, has less coefficient of thermal expansion and shrinkage factor, higher
Thermostability；According to Tao Xin size, soft stud is set as the cylinder of Φ 4mm；
In the present embodiment, soft stud is parallel with Tao Xin Y-axis, in conjunction with Tao Xin overall structure, selects: lathe is three-axis numerical control
Lathe, according to soft stud diameter, determines that tool diameter≤1mm, selection cutter are carbide-tipped milling cutter, its cutter ball
Head radius is 0.5mm.
Prepared by step 4, soft stud blank.
Specifically comprise the following steps that
(1) use neutral detergent to add water cleanings, get rid of wicking surface oil film of making pottery；
(2) dewaxing: selected soft stud wax material is passed through in beaker heating in water bath, controls wax liquid temperature and be less than
100℃；
(3) waxing: Wax-coated liquid near soft stud position, its size should be greater than soft stud size, in case numerical control adds
Spare time measures.
Step 5, soft stud digital control processing.
Utilize common CAD/CAM software to be programmed, and Path is carried out simulating, verifying.Add what man-hour selected
Lathe is: VMC-850, and the cutter of selection is: hard alloy bulb milling cutter, and lathe selection of speed is 1300r/min,
Feed speed is 800mm/min.
Claims (1)
1. a turbo blade Tao Xin soft stud processing method, it is characterised in that comprise the following steps:
Step 1, determine leaf basin, blade back soft stud position；
Tao Xin blade segment length is 75mm, and print point cross section I and cross section II height are respectively the 1/3 and 2/3 of blade,
Section line is projected to XZ plane, obtains cross section I and cross section II；Cross section I is along the intersection of Y-direction Yu Tao Xin leaf basin
Trisection, obtains a Q1、Q2, halve along the intersection of Y-direction with Tao Xin leaf basin, obtain a Q in cross section II3, point
Q1、Q2、Q3It is Tao Xin leaf pelvic part position soft stud print point；Cross section I is along the intersection three of Y direction Yu Tao Xin blade back
Decile, obtains a Q4、Q5, halve along the intersection of Y direction with Tao Xin blade back, obtain a Q in cross section II6, point
Q4、Q5、Q6It is Tao Xin blade back position soft stud print point；
Step 2, determine leaf basin, blade back soft stud geometry；
Centered by some Q1, Q2, Q3, Y-axis is that axis makees Φ 4mm cylinder respectively, utilizes Tao Xin leaf basin profile
With wax molds profile, cylinder is carried out cutting, obtain leaf basin soft stud geometry；In with some Q4, Q5, Q6 being
The heart, Y-axis is that axis makees Φ 4mm cylinder respectively, utilizes Tao Xin blade back profile to carry out cylinder with wax molds profile
Cutting, obtains blade back soft stud geometry；
Step 3, analyze soft stud material, select Digit Control Machine Tool, fixture, cutter, technological parameter；
Soft stud material is essence casting wax material, has less coefficient of thermal expansion and shrinkage factor, higher thermostability；According to
Tao Xin size, soft stud is set as the cylinder of Φ 4mm；
Soft stud is parallel with Tao Xin Y-axis, in conjunction with Tao Xin overall structure, selects: lathe is three axis numerically controlled machine, according to
Soft stud diameter, determines that tool diameter≤1mm, selection cutter are carbide-tipped milling cutter, and its cutter Probe-radius is
0.5mm；
Prepared by step 4, soft stud blank；
Use neutral detergent to add water cleanings, get rid of wicking surface oil film of making pottery；Selected soft stud wax material is passed through water
Bath heating, controls wax liquid temperature less than 100 DEG C；Wax-coated liquid near soft stud position, Wax-coated liquid size is big
In soft stud size, in case digital control processing surplus；
Step 5, soft stud digital control processing；
Utilize common CAD/CAM software to be programmed, and Path is carried out simulating, verifying；Add what man-hour selected
Lathe is: VMC-850, and the cutter of selection is: hard alloy bulb milling cutter, and lathe selection of speed is 1300r/min,
Feed speed is 800mm/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374616.4A CN106002112B (en) | 2016-05-31 | 2016-05-31 | The soft stud processing methods of turbo blade Tao Xin |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610374616.4A CN106002112B (en) | 2016-05-31 | 2016-05-31 | The soft stud processing methods of turbo blade Tao Xin |
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| CN106002112B CN106002112B (en) | 2017-11-28 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106777561A (en) * | 2016-11-29 | 2017-05-31 | 朱金焰 | A kind of layout method of turbo blade essence casting wax pattern Tao Xin clamping elements |
| CN107748827A (en) * | 2017-11-09 | 2018-03-02 | 广东工业大学 | Hollow cylindrical components processing method, system, equipment and storage medium |
| CN110405139A (en) * | 2019-08-28 | 2019-11-05 | 贵州航天风华精密设备有限公司 | A kind of investment casting method controlling aero-engine hollow blade wall thickness |
| CN111318641A (en) * | 2020-04-09 | 2020-06-23 | 上海交通大学 | Method for controlling offset size of water-soluble core wax mold of complex thin-wall hollow casting |
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| CN104526856A (en) * | 2014-12-31 | 2015-04-22 | 西安交通大学 | Method for improving position accuracy of mold core of integrated type ceramic mold |
| CN104923722A (en) * | 2015-06-24 | 2015-09-23 | 西安航空动力股份有限公司 | Method for controlling hollow guide blade upper edge plate cavity wall thickness |
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| GB2111881A (en) * | 1981-12-16 | 1983-07-13 | Vickers Plc | Investment casting process and mould |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106777561A (en) * | 2016-11-29 | 2017-05-31 | 朱金焰 | A kind of layout method of turbo blade essence casting wax pattern Tao Xin clamping elements |
| CN107748827A (en) * | 2017-11-09 | 2018-03-02 | 广东工业大学 | Hollow cylindrical components processing method, system, equipment and storage medium |
| CN110405139A (en) * | 2019-08-28 | 2019-11-05 | 贵州航天风华精密设备有限公司 | A kind of investment casting method controlling aero-engine hollow blade wall thickness |
| CN111318641A (en) * | 2020-04-09 | 2020-06-23 | 上海交通大学 | Method for controlling offset size of water-soluble core wax mold of complex thin-wall hollow casting |
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