CN108838629B - Novel method for processing rhombic two-side-face tooth-shaped movable partition leaf piece - Google Patents
Novel method for processing rhombic two-side-face tooth-shaped movable partition leaf piece Download PDFInfo
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- CN108838629B CN108838629B CN201810889749.4A CN201810889749A CN108838629B CN 108838629 B CN108838629 B CN 108838629B CN 201810889749 A CN201810889749 A CN 201810889749A CN 108838629 B CN108838629 B CN 108838629B
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- blank
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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
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04D—NON-POSITIVE-DISPLACEMENT PUMPS
- F04D29/00—Details, component parts, or accessories
- F04D29/26—Rotors specially for elastic fluids
- F04D29/32—Rotors specially for elastic fluids for axial flow pumps
- F04D29/38—Blades
Abstract
The invention relates to a novel method for processing a tooth-shaped movable vane part with two rhombic side surfaces, wherein the movable vane part comprises a forward movable vane part and a reverse movable vane part, and the method comprises the following steps: (1) selecting an arc-shaped material as a processing blank; (2) milling and grinding a reference surface; (3) milling a pressing surface; (4) milling inner and outer end arcs and blade root tooth forms; (5) cutting the forward moving partition leaf pieces one by one according to the angle line of the forward diamond surface, and grinding planes cut at two sides of the forward moving partition leaf pieces to the size to finish the processing of the forward moving partition leaf pieces; (6) and cutting the reverse movable partition leaf pieces one by one according to the angle line of the reverse rhombic surface, and grinding planes cut at two sides of the reverse movable partition leaf pieces to the size to finish the machining of the reverse movable partition leaf pieces. The milling machine has the advantages of reasonable design, ingenious conception, material saving and low cost, and can mill the tooth-shaped blade root and the inner and outer end arcs of more than ten movable vane spacers by one-time clamping, thereby improving the production and processing efficiency of the movable vane spacers.
Description
Technical Field
The invention relates to the technical field of moving blade machining, in particular to a novel method for machining a tooth-shaped moving blade partition with two rhombic side faces.
Background
When the moving blades of the axial flow fan are installed into an impeller, a blade separation piece is installed between every two blades, the thickness of the blade separation piece is generally only about 10mm, tooth-shaped blade roots are arranged on two sides, and the angle of a diamond face is 119 degrees as the angle of a combined blade (MPG 5.4-D1/D2); in the past, the processing is carried out one by one, which consumes materials, has low processing efficiency and high cost.
Disclosure of Invention
In order to solve the problems, the invention provides a novel method for processing the rhombic two-side-face tooth-shaped movable partition leaf piece, which has the advantages of material saving, low cost and high processing efficiency.
The technical scheme of the invention is as follows:
a new method for processing a tooth-shaped movable vane part with two rhombic side surfaces comprises a forward movable vane part and a reverse movable vane part, and comprises the following steps:
(1) selecting an arc-shaped material as a processing blank.
(2) Two parallel planes are milled and ground at two ends of the blank respectively to be used as reference planes.
(3) And milling the two side ends of the blank to form pressing surfaces.
(4) Clamping the pressing surface of the blank on a milling machine, milling arcs at the inner end and the outer end of the blank respectively, milling blade root tooth forms on the reference surfaces of the blank respectively, wherein the blade root tooth forms on the two reference surfaces are symmetrical to each other.
(5) And (4) cutting the blank subjected to the step (4) into forward movable partition leaf pieces one by one on the inner and outer end arc surfaces according to the angle line of the forward rhombic surface, and grinding planes cut at two sides of the forward movable partition leaf pieces to the size to finish the processing of the forward movable partition leaf pieces.
(6) And (4) cutting the blank subjected to the step (4) into reverse movable partition leaf pieces one by one on the inner and outer end arc surfaces according to the angle line of the reverse rhombic surface, and grinding planes cut at two sides of the reverse movable partition leaf pieces to the size to finish the machining of the reverse movable partition leaf pieces.
The whole arc-shaped blank is firstly processed preliminarily, and then the processed blank is cut into a plurality of movable separation blade pieces, so that the material is saved, the cost is reduced, the tooth-shaped blade root and the inner and outer end arcs are processed on the whole arc-shaped blank, the tooth-shaped blade root and the inner and outer end arcs of more than ten movable separation blade pieces are milled by one-time clamping, and the production and processing efficiency of the movable separation blade pieces is improved.
The blank in the step (1) is made of 1Cr13 alloy; has good corrosion resistance and machinability.
The parallelism between the reference surfaces in the step (2) is not more than 0.03.
In the step (4), the arc radius of the inner arc surface is R311, and the arc radius of the outer arc surface is R380.
And (4) machining and forming the blade root tooth profile in the step (4) by adopting a turning method, namely milling the blade root tooth profile on the reference surface at one end of the blank, turning the blank, and milling the symmetrical blade root tooth profile on the reference surface at the other end of the blank.
The angle of the rhombic surface in the steps (5) and (6) is 119 degrees and is consistent with the angle of the rhombic surface of the forward and backward moving blade, so that the surface of the impeller is seamless when the impeller is assembled.
The invention has the advantages of reasonable design, ingenious conception, material saving and low cost, and can mill the tooth-shaped blade root and the inner and outer end arcs of more than ten movable vane spacers by one-time clamping, thereby improving the production and processing efficiency of the movable vane spacers.
Drawings
Fig. 1 is a front view of a billet subjected to the processing in steps (1), (2), and (3).
Fig. 2 is a plan view of the billet subjected to the processing in steps (1), (2), and (3).
Fig. 3 is a front view of the billet subjected to the processing in steps (1), (2), (3), and (4).
FIG. 4 is a schematic view of a positive displacement spacer cutting.
FIG. 5 is a schematic view of a positive displacement spacer mechanism.
FIG. 6 is a schematic view of a reverse acting spacer cutting.
FIG. 7 is a schematic view of a reverse acting leaf spacer mechanism.
In the figure, a reference surface 2 of a blank 1 is provided with a pressing surface 3, an outer arc surface 4 and an inner arc surface 5, and a blade root tooth form 6.
Detailed Description
As shown in fig. 1-6, a new method for processing a diamond-shaped tooth-shaped movable vane partition with two side faces, wherein the movable vane partition comprises a forward movable vane partition and a reverse movable vane partition, and comprises the following steps:
(1) an arc-shaped material made of 1Cr13 alloy is selected as a processing blank 1.
(2) Firstly, two parallel planes are milled and ground at two ends of a blank 1 respectively to be used as reference planes 2, and the parallelism between the reference planes 2 is not more than 0.03.
(3) And milling the two side ends of the blank 1 to form pressing surfaces 3 respectively.
(4) Clamping a pressing surface 3 of a blank on a milling machine, milling an inner arc surface 5 of R311 and an outer arc surface 4 of R380 at the inner end and the outer end of the blank 1 respectively, adopting a turning processing method, milling a blade root tooth form 6 on a reference surface 2 at one end of the blank, turning the blank 1, milling a symmetrical blade root tooth form 6 on a reference surface 2 at the other end of the blank, wherein the blade root tooth forms 6 on the two reference surfaces are mutually symmetrical.
(5) And (4) cutting the blank 1 subjected to the step (4) into forward movable partition leaf pieces one by one on the inner end circular arc 5 and the outer end circular arc 4 according to the rhombic surface angle line of 119 degrees in the forward direction, and grinding planes cut at two sides of the forward movable partition leaf pieces to the size to finish the processing of the forward movable partition leaf pieces.
(6) And (4) cutting the blank subjected to the step (4) into reverse movable partition leaf pieces one by one on the inner end circular arc 5 and the outer end circular arc 4 according to a reversed 119-degree rhombic surface angle line, and grinding planes cut at two sides of each reverse movable partition leaf piece to the size to complete the machining of the reverse movable partition leaf pieces.
Because of the limited character expression, there exist practically unlimited specific structures, and it will be apparent to those skilled in the art that a number of improvements, decorations, or changes may be made without departing from the principles of the present invention, or the above technical features may be combined in a suitable manner; such modifications, variations, combinations, or adaptations of the invention using its spirit and scope, as defined by the claims, may be directed to other uses and embodiments.
Claims (1)
1. A new method for processing a tooth-shaped movable vane part with two rhombic side surfaces comprises a forward movable vane part and a reverse movable vane part, and comprises the following steps:
(1) selecting an arc-shaped material made of 1Cr13 alloy as a processing blank;
(2) firstly, milling and grinding two parallel planes at two ends of a blank respectively to be used as reference planes, wherein the parallelism between the reference planes is not more than 0.03;
(3) respectively milling two side ends of the blank to form pressing surfaces;
(4) clamping a pressing surface of a blank on a milling machine, milling an inner arc surface of R311 and an outer arc surface of R380 at the inner end and the outer end of the blank respectively, milling a blade root tooth form on a reference surface at one end of the blank by adopting a turning-over processing method, turning over the blank, milling a symmetrical blade root tooth form on a reference surface at the other end of the blank, wherein the blade root tooth forms on the two reference surfaces are mutually symmetrical;
(5) cutting the blank subjected to the step (4) into forward movable partition leaf pieces one by one on the inner end circular arc surface and the outer end circular arc surface according to a diamond surface angle line of 119 degrees in the forward direction, and grinding planes cut at two sides of the forward movable partition leaf pieces to the size to finish the processing of the forward movable partition leaf pieces;
(6) and (4) cutting the blank subjected to the step (4) into reverse movable partition leaf pieces one by one on the inner end circular arc surface and the outer end circular arc surface according to a reverse 119-degree rhombic surface angle line, and grinding planes cut at two sides of each reverse movable partition leaf piece to the size to complete the machining of the reverse movable partition leaf pieces.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889749.4A CN108838629B (en) | 2018-08-07 | 2018-08-07 | Novel method for processing rhombic two-side-face tooth-shaped movable partition leaf piece |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889749.4A CN108838629B (en) | 2018-08-07 | 2018-08-07 | Novel method for processing rhombic two-side-face tooth-shaped movable partition leaf piece |
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| Publication Number | Publication Date |
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| CN108838629A CN108838629A (en) | 2018-11-20 |
| CN108838629B true CN108838629B (en) | 2021-01-22 |
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| CN201810889749.4A Active CN108838629B (en) | 2018-08-07 | 2018-08-07 | Novel method for processing rhombic two-side-face tooth-shaped movable partition leaf piece |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1878955A1 (en) * | 2006-07-14 | 2008-01-16 | Rolls-Royce plc | Leaf seals |
| EP2221514A2 (en) * | 2009-02-20 | 2010-08-25 | General Electric Company | Method of manufacture of compliant plate seals |
| CN206578577U (en) * | 2017-03-22 | 2017-10-24 | 哈尔滨汽轮机厂有限责任公司 | One kind processing blade rhombus blade root special fixture |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10035224A1 (en) * | 2000-07-20 | 2002-01-31 | Man Turbomasch Ag Ghh Borsig | Process and blank for producing rhomboid blades for axial turbomachines |
| CN201669566U (en) * | 2009-11-19 | 2010-12-15 | 西安陕鼓动力股份有限公司 | Wire cutting tool used for processing filler pieces by annular blank |
| CN101700612B (en) * | 2009-11-19 | 2013-02-27 | 西安陕鼓动力股份有限公司 | Machining method of rotating blade spacer of axial compressor/turbine |
| CN103362565B (en) * | 2013-07-04 | 2015-01-21 | 西安交通大学 | Step-shaped blade root structure of turbine blade as well as blade root and blade separation block matching structure |
| CN105081691B (en) * | 2015-07-30 | 2017-09-19 | 南通中能机械制造有限公司 | Diamond shaped tooth form circular-arc roots of vanes movable vane slice processing method |
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2018
- 2018-08-07 CN CN201810889749.4A patent/CN108838629B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1878955A1 (en) * | 2006-07-14 | 2008-01-16 | Rolls-Royce plc | Leaf seals |
| EP2221514A2 (en) * | 2009-02-20 | 2010-08-25 | General Electric Company | Method of manufacture of compliant plate seals |
| CN206578577U (en) * | 2017-03-22 | 2017-10-24 | 哈尔滨汽轮机厂有限责任公司 | One kind processing blade rhombus blade root special fixture |
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| Publication number | Publication date |
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| CN108838629A (en) | 2018-11-20 |
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