CN108526565A - The molding device of gas compressor moving blade blade root - Google Patents
The molding device of gas compressor moving blade blade root Download PDFInfo
- Publication number
- CN108526565A CN108526565A CN201810692255.7A CN201810692255A CN108526565A CN 108526565 A CN108526565 A CN 108526565A CN 201810692255 A CN201810692255 A CN 201810692255A CN 108526565 A CN108526565 A CN 108526565A
- Authority
- CN
- China
- Prior art keywords
- blade
- cutter
- chip pocket
- cutter hub
- blade root
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Withdrawn
Links
- 238000000465 moulding Methods 0.000 title claims abstract description 25
- 238000005520 cutting process Methods 0.000 claims abstract description 28
- 210000000515 tooth Anatomy 0.000 claims abstract description 12
- 229910000997 High-speed steel Inorganic materials 0.000 claims abstract description 8
- 239000000843 powder Substances 0.000 claims abstract description 8
- 238000003466 welding Methods 0.000 claims description 7
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 238000005219 brazing Methods 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- 238000005476 soldering Methods 0.000 claims description 5
- 239000000126 substance Substances 0.000 claims description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 239000011248 coating agent Substances 0.000 claims description 3
- 238000000576 coating method Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 abstract description 12
- 239000010959 steel Substances 0.000 abstract description 12
- 230000000903 blocking effect Effects 0.000 abstract description 8
- 230000008859 change Effects 0.000 abstract description 5
- 230000007704 transition Effects 0.000 abstract description 5
- 238000000227 grinding Methods 0.000 abstract description 4
- 239000000463 material Substances 0.000 description 11
- 239000007789 gas Substances 0.000 description 8
- 238000004519 manufacturing process Methods 0.000 description 7
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- 239000010935 stainless steel Substances 0.000 description 3
- 229910001220 stainless steel Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 101150004909 asp23 gene Proteins 0.000 description 2
- 238000013016 damping Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000010248 power generation Methods 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000002887 superconductor Substances 0.000 description 2
- 230000003746 surface roughness Effects 0.000 description 2
- 238000009736 wetting Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- 229910001069 Ti alloy Inorganic materials 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000001580 bacterial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 230000004899 motility Effects 0.000 description 1
- 229910052758 niobium Inorganic materials 0.000 description 1
- 239000010955 niobium Substances 0.000 description 1
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910001562 pearlite Inorganic materials 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
- 229910052720 vanadium Inorganic materials 0.000 description 1
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23C—MILLING
- B23C5/00—Milling-cutters
- B23C5/02—Milling-cutters characterised by the shape of the cutter
- B23C5/12—Cutters specially designed for producing particular profiles
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
The invention discloses the molding devices of gas compressor moving blade blade root, are related to Steam Turbines blade root molding cutter, including cutter hub, and the cutting edge molded line of the cutter hub is consistent with the blade-root molded line of turbine blade；The cutter hub also has multiple cutting tooths, and in circumferential decile or decile is not distributed, and is chip pocket between adjacent cutting tooth, and the chip pocket is helicla flute, and the chip pocket is the helicla flute made according to Fibonacci helix.The cutter hub is made of Powder High-speed Steels.The present invention overcomes existing movable vane blade root molding cutter helixes to lead to the blocking of chip pocket only with medium-sized cylindrical spiral, using Fibonacci helix as helix is exited, transition can be made more smooth, prevents steel cuttings from blocking chip pocket；The increase of cutter grinding number will not change cutter molded line；Have the characteristics that efficiently be molded, it is highly practical.
Description
Technical field
The present invention relates to Steam Turbines blade root molding cutters, and in particular to the molding device of gas compressor moving blade blade root.
Background technology
Steam turbine is the rotary power machinery that the energy of steam is converted to mechanical work, is the main of Steam Power Equipment
One of equipment.It is mainly used as prime mover of power generation, can also directly drive various pumps, wind turbine, compressor and propeller for vessels etc..
The steam discharge or intermediate extraction that steam turbine can also be utilized meet production and heat supply needs in life.Steam turbine is that a kind of high temperature is high
High-speed rotating machinery is pressed, for power generation turbine, and is high-power output ground motility mechanical, so design
It is required that steam turbine has high efficiency, high safety reliability, and adjustability will be got well.Wherein, the operating condition of the blade of steam turbine
Complexity is also steamed because it is in overheat respectively in addition to bearing higher static stress and dynamic stress because of high speed rotation and airflow function
It works in vapour area, two-phase transition region and moist steam section and bears high temperature, high pressure, corrosion and erosion effect.Therefore the material of blade
Material will meet claimed below：Good room temperature and high-temperature mechanical property, good corrosion stability, good damping property and certain
The good cold and hot working performance of wearability.The common used material of blade has：
1, straight-chromiun stainless steel 1Cr13 and 2Cr13 belong to martensite heat-resistant steel, they under room temperature and operating temperature in addition to having
Outside enough intensity, also there is high corrosion resistance and damping, be most popular turbine materials in the world.
2, enhanced type straight-chromiun stainless steel compensates for the relatively low disadvantage of 1Cr13 type straight-chromiun stainless steel heat resistances, wherein be added molybdenum,
Tungsten, vanadium, niobium, boron etc..
3, low-alloy pearlite heat resisting steel, for manufacturing operating temperature in 450 DEG C or less middle-pressure steam turbine movable vane pieces at different levels
And stator blade.
4, aluminium alloy and its density of titanium alloy is small, corrosion resistance is high, for manufacturing the long movable vane piece of large steam turbine final stage.
The form of turbine blade root mainly has T-type, bacterial type, forked type and fir-tree type in turbomachinery.And fir-tree type leaf
Root has intensity high, the feature that precision is high and connection is reliable.But when the molding tool sharpening fir-tree root of traditional movable vane blade root,
Difficulty of processing difficulty for the blade root of other forms such as fork-shaped is much greater, and difficulty is mainly reflected in blade-root molded line essence
Degree is high, and cutter making is difficult.To solve, the vibration generated when the cutting of high feed speed is big, finished surface is still with the presence of chatter mark, table
Surface roughness is unable to reach the surface quality requirements that blade root surface roughness is Ra0.8, patent document CN101972870A steamers
Machine blade root milling cutter is proposed is made helicla flute using the chip pocket of welding milling cutter, and the chip face of welding blade is also a spiral shell
Curved surface is revolved, is continuous cutting when cutting, Vibration Condition can be reduced, improve blade root surface quality.
However, during actual use, it often will appear the helicla flute card bits problem of helix, need in blade root is handled
Way stops cleaning, to avoid the damage of molding cutter, reduces the efficiency used, basic reason is movable vane blade root forming cutter
The extensive setting of the unreasonable type selecting and steel cuttings escape mechanism of the helix of tool, limits the export of steel cuttings jointly.
Invention content
The technical problem to be solved by the present invention is to the unreasonable type selecting of the helix of movable vane blade root molding cutter and steel
The extensive setting for considering escape mechanism to be worth doing, limits the export of steel cuttings, and it is an object of the present invention to provide the molding dress of gas compressor moving blade blade root jointly
It sets, solves the above problems.
The present invention is achieved through the following technical solutions：
The molding device of gas compressor moving blade blade root, including cutter hub, the cutting edge molded line of the cutter hub and the leaf of turbine blade
Root molded line is consistent；The cutter hub also has multiple cutting tooths, and in circumferential decile or decile is not distributed, and is to hold between adjacent cutting tooth
Consider slot to be worth doing, the chip pocket is helicla flute, and the chip pocket is the helicla flute made according to Fibonacci helix.Fibonacci spiral shell
Spin line, also referred to as golden spiral, are the helical curves drawn according to Fibonacci sequence, and there are many Fibonaccis in nature
The pattern of helix is the most perfect classical golden ratio of nature.It is moulded although more difficult compared to cylindrical spiral,
On the basis of the numerically-controlled machine tool being becoming better and approaching perfection day by day at present, movable vane blade root molding cutter is made to have been able to manufacture.Overcome existing movable vane
Blade root molding cutter helix leads to the blocking of chip pocket only with medium-sized cylindrical spiral, using Fibonacci spiral
Line can make transition more smooth as helix is exited, and prevent steel cuttings from blocking chip pocket.
Further, the cutter hub is made of Powder High-speed Steels.Powder High-speed Steels have ASP23, the products such as ELMAX, can
To obtain extreme hardness HRC 63~70, and can still keep 60 or more high rigidity HRC and high-wearing feature at 550~600 DEG C
Heat-resistance and wear-resistance steel class, main application is to manufacture the cutting element of various lathes, and also part is used for top load mold, and aviation is high
Warm bearing and special heat-resistant antifriction parts etc..
Further, the cutter hub and the welded chemical conversion type of blade, welding manner are brazing or silver soldering.When due to welding
The high temperature solder materials of use, it is therefore desirable to which, using hard fine weldering, brazing or silver soldering are alternative plan.
Further, the cutting tooth surface has titanium nitride coating.Titanium nitride has fusing point height, hardness big, chemical steady
Qualitative good, small with the wetting of metal structural material simultaneously has higher electric conductivity and superconductivity, can be applied to thermal structure material
Material and superconductor, and Powder High-speed Steels combination, enable to the increase of cutter grinding number not change cutter molded line.
Compared with prior art, the present invention having the following advantages and advantages：
1, the molding device of gas compressor moving blade blade root of the present invention overcomes existing movable vane blade root molding cutter helix only
The blocking for being led to chip pocket using medium-sized cylindrical spiral is used as using Fibonacci helix and exits helix, energy
Enough make transition more smooth, prevents steel cuttings from blocking chip pocket；
2, the molding device of gas compressor moving blade blade root of the present invention, the increase of cutter grinding number will not change cutter molded line；
3, the molding device of gas compressor moving blade blade root of the present invention, have the characteristics that efficiently be molded, it is highly practical.
Description of the drawings
Attached drawing described herein is used for providing further understanding the embodiment of the present invention, constitutes one of the application
Point, do not constitute the restriction to the embodiment of the present invention.In the accompanying drawings：
Fig. 1 is the structural schematic diagram of an embodiment of the present invention；
Fig. 2 is Fibonacci helix schematic diagram.
Label and corresponding component names in attached drawing：
1- cutter hubs, 2- cutting tooths, 3- chip pockets.
Specific implementation mode
To make the objectives, technical solutions, and advantages of the present invention clearer, with reference to embodiment and attached drawing, to this
Invention is described in further detail, and exemplary embodiment of the invention and its explanation are only used for explaining the present invention, do not make
For limitation of the invention.
Embodiment 1
As shown in Figs. 1-2, the molding device of gas compressor moving blade blade root of the present invention, including cutter hub 1, the cutting edge of the cutter hub 1
Molded line is consistent with the blade-root molded line of turbine blade；The cutter hub 1 also has multiple cutting tooths 2, in circumferential decile or not decile
It is distributed, is chip pocket 3 between adjacent cutting tooth 2, the chip pocket 3 is helicla flute, and the chip pocket 3 is according to Fibonacci spiral shell
The helicla flute that spin line makes.Fibonacci helix, also referred to as golden spiral are the helical curves drawn according to Fibonacci sequence
Line, there are the patterns of many Fibonacci helixes in nature, are the most perfect classical golden ratios of nature.Although comparing
It moulds in cylindrical spiral is more difficult, but on the basis of the numerically-controlled machine tool being becoming better and approaching perfection day by day at present, has made movable vane blade root molding cutter
Through that can manufacture.Overcome existing movable vane blade root molding cutter helix causes to hold only with medium-sized cylindrical spiral
The blocking for considering slot 3 to be worth doing can make transition more smooth, prevent steel cuttings from blocking using Fibonacci helix as helix is exited
Chip pocket 3.
Embodiment 2
The present embodiment is made that restriction further below on the basis of embodiment 1：The cutter hub 1 uses Powder High-speed Steels
It is made.Powder High-speed Steels have ASP23, the products such as ELMAX, extreme hardness HRC 63~70 can be obtained, and 550~
600 DEG C of heat-resistance and wear-resistance steel classes that can still keep 60 or more high rigidity HRC and high-wearing feature, main application are to manufacture various machines
The cutting element of bed, also part is for top load mold, aerial high-temperature bearing and special heat-resistant antifriction parts etc..The cutter hub
1 with the welded chemical conversion type of blade, welding manner be brazing or silver soldering.The high temperature solder materials that use when due to welding,
It needs using hard fine weldering, brazing or silver soldering are alternative plan.2 surface of the cutting tooth has titanium nitride coating.Nitrogen
Change the structural material that titanium is high with fusing point, hardness is big, chemical stability is good, small with the wetting of metal and with higher conduction
Property and superconductivity, can be applied to high-temperature structural material and superconductor, and the combination of Powder High-speed Steels, enable to cutter grinding
The increase of number will not change cutter molded line.
Above-described specific implementation mode has carried out further the purpose of the present invention, technical solution and advantageous effect
It is described in detail, it should be understood that the foregoing is merely the specific implementation mode of the present invention, is not intended to limit the present invention
Protection domain, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should all include
Within protection scope of the present invention.
Claims (4)
1. the molding device of gas compressor moving blade blade root, including cutter hub (1), the cutting edge molded line and turbine blade of the cutter hub (1)
Blade-root molded line it is consistent；The cutter hub (1) also has multiple cutting tooths (2), and in circumferential decile or decile is not distributed, adjacent cutting
It is chip pocket (3) between tooth (2), the chip pocket (3) is helicla flute, which is characterized in that the chip pocket (3) is according to striking wave
The helicla flute that contract helix makes.
2. the molding device of gas compressor moving blade blade root according to claim 1, which is characterized in that the cutter hub (1) uses
Powder High-speed Steels are made.
3. the molding device of gas compressor moving blade blade root according to claim 1, which is characterized in that the cutter hub (1) and knife
The welded chemical conversion type of piece, welding manner are brazing or silver soldering.
4. the molding device of gas compressor moving blade blade root according to claim 1, which is characterized in that cutting tooth (2) table
Face has titanium nitride coating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810692255.7A CN108526565A (en) | 2018-06-29 | 2018-06-29 | The molding device of gas compressor moving blade blade root |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810692255.7A CN108526565A (en) | 2018-06-29 | 2018-06-29 | The molding device of gas compressor moving blade blade root |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108526565A true CN108526565A (en) | 2018-09-14 |
Family
ID=63487227
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810692255.7A Withdrawn CN108526565A (en) | 2018-06-29 | 2018-06-29 | The molding device of gas compressor moving blade blade root |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108526565A (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151261A (en) * | 1965-07-07 | 1969-05-07 | Tos Kurim | Improvements in or relating to Face-Milling Cutter Heads |
| CN201300239Y (en) * | 2008-06-03 | 2009-09-02 | 哈尔滨第一工具制造有限公司 | Wheel groove semi-finished milling cutter with wavy cutting edge |
| CN101972870A (en) * | 2010-10-25 | 2011-02-16 | 东方电气集团东方汽轮机有限公司 | Turbine blade root milling cutter |
| CN102266975A (en) * | 2010-06-02 | 2011-12-07 | 日立工具股份有限公司 | Firtree-shaped tool and processing method for impeller blade root using the tool |
| CN205519838U (en) * | 2016-03-30 | 2016-08-31 | 江阴塞特精密工具有限公司 | Steam turbine blade root slot mill |
| CN106424881A (en) * | 2016-10-21 | 2017-02-22 | 株洲钻石切削刀具股份有限公司 | Milling cutter |
| CN107350568A (en) * | 2017-08-25 | 2017-11-17 | 李弘文 | Variable helical angle standard module finger-like slotting cutter |
| US20180079016A1 (en) * | 2015-03-31 | 2018-03-22 | Mitsubishi Materials Corporation | Formed end mill |
| CN208483293U (en) * | 2018-06-29 | 2019-02-12 | 德阳杰创科技有限公司 | A kind of movable vane blade root molding cutter |
-
2018
- 2018-06-29 CN CN201810692255.7A patent/CN108526565A/en not_active Withdrawn
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1151261A (en) * | 1965-07-07 | 1969-05-07 | Tos Kurim | Improvements in or relating to Face-Milling Cutter Heads |
| CN201300239Y (en) * | 2008-06-03 | 2009-09-02 | 哈尔滨第一工具制造有限公司 | Wheel groove semi-finished milling cutter with wavy cutting edge |
| CN102266975A (en) * | 2010-06-02 | 2011-12-07 | 日立工具股份有限公司 | Firtree-shaped tool and processing method for impeller blade root using the tool |
| CN101972870A (en) * | 2010-10-25 | 2011-02-16 | 东方电气集团东方汽轮机有限公司 | Turbine blade root milling cutter |
| US20180079016A1 (en) * | 2015-03-31 | 2018-03-22 | Mitsubishi Materials Corporation | Formed end mill |
| CN205519838U (en) * | 2016-03-30 | 2016-08-31 | 江阴塞特精密工具有限公司 | Steam turbine blade root slot mill |
| CN106424881A (en) * | 2016-10-21 | 2017-02-22 | 株洲钻石切削刀具股份有限公司 | Milling cutter |
| CN107350568A (en) * | 2017-08-25 | 2017-11-17 | 李弘文 | Variable helical angle standard module finger-like slotting cutter |
| CN208483293U (en) * | 2018-06-29 | 2019-02-12 | 德阳杰创科技有限公司 | A kind of movable vane blade root molding cutter |
Non-Patent Citations (1)
| Title |
|---|
| 薛澄岐等: "《工业设计基础 (第2版)》", 30 September 2012, 东南大学出版社 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20180914 |