CN103920897A - Forming finishing tool for machining rotor wheel groove - Google Patents
Forming finishing tool for machining rotor wheel groove Download PDFInfo
- Publication number
- CN103920897A CN103920897A CN201410174383.4A CN201410174383A CN103920897A CN 103920897 A CN103920897 A CN 103920897A CN 201410174383 A CN201410174383 A CN 201410174383A CN 103920897 A CN103920897 A CN 103920897A
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- CN
- China
- Prior art keywords
- cutting edge
- main cutting
- main
- finishing tool
- tool
- 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.)
- Pending
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B27/00—Tools for turning or boring machines; Tools of a similar kind in general; Accessories therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2220/00—Details of turning, boring or drilling processes
- B23B2220/12—Grooving
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2220/00—Details of turning, boring or drilling processes
- B23B2220/24—Finishing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B2222/00—Materials of tools or workpieces composed of metals, alloys or metal matrices
- B23B2222/32—Details of high speed steel
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The invention relates to a forming finishing tool for machining a rotor wheel groove, and belongs to a steam turbine rotor wheel groove turning tool. According to the forming finishing tool, the problems that multiple working procedures are needed when an exiting tool is used for machining the rotor wheel groove, the production efficiency is low, cost is increased, and the machining accuracy is low are solved. The forming finishing tool for machining the rotor wheel groove comprises a tool head and a tool handle, the tail end of the tool head is fixedly connected with the tool handle, a first auxiliary cutting edge is vertically arranged, a second main cutting edge is horizontally arranged, a second auxiliary cutting edge is arranged right above the tail end of the second main cutting edge in parallel, the tail end of the second main cutting edge is connected with the second auxiliary cutting edge through a third main cutting edge, a fifth main cutting edge is arranged below the second auxiliary cutting edge in parallel, and a third auxiliary cutting edge is arranged right above the tail end of the fifth main cutting edge in parallel. The forming finishing tool is used for machining the steam turbine rotor wheel groove.
Description
Technical field
The present invention relates to a kind of steam turbine runner trough lathe tool, be specifically related to a kind of rotor groove processing shaping finishing tool.
Background technology
Rotor is one of parts very important in steam turbine, during working rotor, makes High Rotation Speed, not only will bear the centrifugal force that moving vane produces, and mainly also bears dynamic stress, thereby rotor groove will have very tight dimensional accuracy and lower surface roughness.G18 unit rotor groove adopts double-T structure at present, and race molded line is more complicated, two locating surfaces, and molded line size is larger, and length of cut reaches 54mm, the very inaccessible required precision of common process cutter.
Summary of the invention
The present invention needs multiple working procedure to complete when solving existing cutter to rotor groove fine finishining, and production efficiency is low, increases cost, and the low problem of machining accuracy, and then proposes a kind of rotor groove processing shaping finishing tool.
The present invention solves the problems of the technologies described above the technical scheme of taking to be: the present invention includes cutter head and handle of a knife, end and the handle of a knife of cutter head are affixed, the first front cutting edge vertically arranges, the second main cutting edge is horizontally disposed with, the second main cutting edge sword is long is 10.2mm, between the end of the first front cutting edge and the second main cutting edge first distance is 9.6mm, between the first front cutting edge and the second main cutting edge, be provided with the first main cutting edge, the first angle that the first main cutting edge becomes with the second main cutting edge is 45 °, the second front cutting edge be set in parallel in the second main cutting edge end directly over, second distance between the second front cutting edge and the second main cutting edge is 9.6mm, the second front cutting edge sword is long is 10.2mm, the end of the second main cutting edge is connected with the second front cutting edge by the 3rd main cutting edge, the 5th main cutting edge is set in parallel in the below of the second front cutting edge, between the 5th main cutting edge and the second front cutting edge the 3rd distance is 16mm, the 5th main cutting edge sword is long is 8mm, the end of the second front cutting edge is connected with the 5th main cutting edge by the 4th main cutting edge, the second angle that the 4th main cutting edge becomes with the 5th main cutting edge is 45 °, the 3rd front cutting edge be set in parallel in the 5th main cutting edge end directly over, between the 3rd front cutting edge and the 5th main cutting edge the 4th distance is 9.6mm, the end of the 5th main cutting edge is connected with the 3rd front cutting edge by the 6th main cutting edge.
The beneficial effect that the present invention compared with prior art comprises is: the present invention can once complete the fine finishining of profiled surface, and workman uses it easy and simple to handle, and machining accuracy is stable, guaranteed machining accuracy, met the designing requirement of product, production efficiency has improved 80%, has reduced processing cost.
Accompanying drawing explanation
Fig. 1 is the integrally-built master map of the present invention; Fig. 2 is the upward view of Fig. 1; Fig. 3 is Fig. 1 left view.
The specific embodiment
The specific embodiment one: as Figure 1-3, described in present embodiment, a kind of rotor groove processing comprises cutter head 1 and handle of a knife 2 with shaping finishing tool, the end of cutter head 1 and handle of a knife 2 are affixed, the first front cutting edge 1-1 vertically arranges, the second main cutting edge 1-3 is horizontally disposed with, the long L1 of the second main cutting edge sword is 10.2mm, the first distance H 1 between the end of the first front cutting edge 1-1 and the second main cutting edge 1-3 is 9.6mm, between the first front cutting edge 1-1 and the second main cutting edge 1-3, be provided with the first main cutting edge 1-2, the first angle α 1 that the first main cutting edge 1-2 becomes with the second main cutting edge 1-3 is 45 °, the second front cutting edge 1-5 be set in parallel in the second main cutting edge 1-3 end directly over, second distance H2 between the second front cutting edge 1-5 and the second main cutting edge 1-3 is 9.6mm, the long L2 of the second front cutting edge sword is 10.2mm, the end of the second main cutting edge 1-3 is connected with the second front cutting edge 1-5 by the 3rd main cutting edge 1-4, the 5th main cutting edge 1-7 is set in parallel in the below of the second front cutting edge 1-5, the 3rd distance H 3 between the 5th main cutting edge 1-7 and the second front cutting edge 1-5 is 16mm, the long L3 of the 5th main cutting edge sword is 8mm, the end of the second front cutting edge 1-5 is connected with the 5th main cutting edge 1-7 by the 4th main cutting edge 1-6, the second angle α 2 that the 4th main cutting edge 1-6 becomes with the 5th main cutting edge 1-7 is 45 °, the 3rd front cutting edge 1-9 be set in parallel in the 5th main cutting edge 1-7 end directly over, the 4th distance H 4 between the 3rd front cutting edge 1-9 and the 5th main cutting edge 1-7 is 9.6mm, the end of the 5th main cutting edge 1-7 is connected with the 3rd front cutting edge 1-9 by the 6th main cutting edge 1-8.
The specific embodiment two: as Figure 1-3, the anterior angle γ of cutter head 1 described in present embodiment
0be 10 °, the relief angle α of cutter head 1
0it is 10 °.Other composition and connected mode are identical with the specific embodiment one.
The specific embodiment three: as Figure 1-3, the total length L of cutter head 1 is 82mm described in present embodiment.Other composition and connected mode are identical with the specific embodiment one or two.
The specific embodiment four: as Figure 1-3, the long L4 of the first front cutting edge sword of the first front cutting edge 1-1 is 12mm described in present embodiment.Other composition and connected mode are identical with the specific embodiment three.
The specific embodiment five: as Figure 1-3, present embodiment institute handle of a knife 2 is T font, and handle of a knife 2 is provided with two escape 2-1, and escape 2-1 is separately positioned on the both sides of cutter head 1.Other composition and connected mode are identical with the specific embodiment one.
Operation principle
The material of rotor is 30Cr2Ni4MoV, and intensity is high, and the toughness of this material and viscosity also larger; Because the length of cut of formed turning tool is larger, thereby the resistance to cutting of formed turning tool is very large.So cutter material is selected super-hard high-speed steel---cobalt high speed steel W2Mo9Cr4VCo8 (M42), its normal temperature hardness HRC67～70.Co adds, and has improved heat resistance, the wearability of cutter material, than common high-speed steel, has longer durability.
Double-T rotor groove work in-process divides two work steps to carry out.The first step adopts common angular tool, processes the general shape of double T groove, one side made allowance 0.2mm.Second step adopts shaping finishing tool, excises last 0.2mm surplus, guarantees design size and the surface roughness of product drawing.Therefore, the molded line size of formed turning tool is to guarantee that the size of race is crucial.During design molded line finishing tool, because resistance to cutting is very large, so get larger anterior angle γ
0=10 °, relief angle α
0=10 °, assurance guarantees formed turning tool cutting smoothly effectively like this, but the profile degree of depth of formed turning tool and the theory contour degree of depth produce the variation of 0.3～0.5mm, so choosing, the size of anterior angle and relief angle needs corrected Calculation, like this, after formed turning tool sharpening anterior angle, the lathe tool profile degree of depth is consistent with the theoretical degree of depth.
Claims (5)
1. a rotor groove is processed and is used shaping finishing tool, it is characterized in that: described a kind of rotor groove processing comprises cutter head (1) and handle of a knife (2) with shaping finishing tool, the end of cutter head (1) and handle of a knife (2) are affixed, the first front cutting edge (1-1) vertically arranges, the second main cutting edge (1-3) is horizontally disposed with, the second main cutting edge sword long (L1) is 10.2mm, between the end of the first front cutting edge (1-1) and the second main cutting edge (1-3) first distance (H1) is 9.6mm, between the first front cutting edge (1-1) and the second main cutting edge (1-3), be provided with the first main cutting edge (1-2), the first angle (α 1) that the first main cutting edge (1-2) becomes with the second main cutting edge (1-3) is 45 °, the second front cutting edge (1-5) be set in parallel in the second main cutting edge (1-3) end directly over, second distance (H2) between the second front cutting edge (1-5) and the second main cutting edge (1-3) is 9.6mm, the second front cutting edge sword long (L2) is 10.2mm, the end of the second main cutting edge (1-3) is connected with the second front cutting edge (1-5) by the 3rd main cutting edge (1-4), the 5th main cutting edge (1-7) is set in parallel in the below of the second front cutting edge (1-5), between the 5th main cutting edge (1-7) and the second front cutting edge (1-5) the 3rd distance (H3) is 16mm, the 5th main cutting edge sword long (L3) is 8mm, the end of the second front cutting edge (1-5) is connected with the 5th main cutting edge (1-7) by the 4th main cutting edge (1-6), the second angle (α 2) that the 4th main cutting edge (1-6) becomes with the 5th main cutting edge (1-7) is 45 °, the 3rd front cutting edge (1-9) be set in parallel in the 5th main cutting edge (1-7) end directly over, between the 3rd front cutting edge (1-9) and the 5th main cutting edge (1-7) the 4th distance (H4) is 9.6mm, the end of the 5th main cutting edge (1-7) is connected with the 3rd front cutting edge (1-9) by the 6th main cutting edge (1-8).
2. shaping finishing tool is used in a kind of rotor groove processing according to claim 1, it is characterized in that: the anterior angle (γ of described cutter head (1)
0) be 10 °, the relief angle (α of cutter head (1)
0) be 10 °.
3. according to a kind of rotor groove processing described in claim 1 or 2, use shaping finishing tool, it is characterized in that: the total length (L) of described cutter head (1) is 82mm.
4. shaping finishing tool is used in a kind of rotor groove processing according to claim 3, it is characterized in that: the first front cutting edge sword long (L4) of described the first front cutting edge (1-1) is 12mm.
5. a kind of rotor groove is processed and is used shaping finishing tool according to claim 1, it is characterized in that: described handle of a knife (2) is T font, handle of a knife (2) is provided with two escapes (2-1), and escape (2-1) is separately positioned on the both sides of cutter head (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174383.4A CN103920897A (en) | 2014-04-28 | 2014-04-28 | Forming finishing tool for machining rotor wheel groove |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410174383.4A CN103920897A (en) | 2014-04-28 | 2014-04-28 | Forming finishing tool for machining rotor wheel groove |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103920897A true CN103920897A (en) | 2014-07-16 |
Family
ID=51139424
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410174383.4A Pending CN103920897A (en) | 2014-04-28 | 2014-04-28 | Forming finishing tool for machining rotor wheel groove |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103920897A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112059219A (en) * | 2020-09-02 | 2020-12-11 | 一重集团(黑龙江)重工有限公司 | Trial turning method and turning tool for nuclear power conventional island low-voltage rotor |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2363660A1 (en) * | 1973-12-20 | 1975-06-26 | Kraftwerk Union Ag | Turbine blade groove cutting tool - has double point provided by second insert tool screw adjustable in body |
| DE2617455A1 (en) * | 1976-04-21 | 1977-11-03 | Kloeckner Werke Ag | Penetrating tool for cutting turbine rotors - consists of mounting shaft with two cutter bits mounted in different planes to cut deep grooves |
| CN1864898A (en) * | 2005-12-16 | 2006-11-22 | 上海汽轮机有限公司 | Process for machining serrated static blade root slot |
| CN102335752A (en) * | 2011-09-16 | 2012-02-01 | 哈尔滨汽轮机厂有限责任公司 | Method for machining concave surface between rotor impellers of steam turbine |
-
2014
- 2014-04-28 CN CN201410174383.4A patent/CN103920897A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2363660A1 (en) * | 1973-12-20 | 1975-06-26 | Kraftwerk Union Ag | Turbine blade groove cutting tool - has double point provided by second insert tool screw adjustable in body |
| DE2617455A1 (en) * | 1976-04-21 | 1977-11-03 | Kloeckner Werke Ag | Penetrating tool for cutting turbine rotors - consists of mounting shaft with two cutter bits mounted in different planes to cut deep grooves |
| CN1864898A (en) * | 2005-12-16 | 2006-11-22 | 上海汽轮机有限公司 | Process for machining serrated static blade root slot |
| CN102335752A (en) * | 2011-09-16 | 2012-02-01 | 哈尔滨汽轮机厂有限责任公司 | Method for machining concave surface between rotor impellers of steam turbine |
Non-Patent Citations (1)
| Title |
|---|
| 杨玉萍等: "双T形转子轮槽加工用成形车刀的研制", 《汽轮机技术》, vol. 46, 30 April 2004 (2004-04-30), pages 139 - 157 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112059219A (en) * | 2020-09-02 | 2020-12-11 | 一重集团(黑龙江)重工有限公司 | Trial turning method and turning tool for nuclear power conventional island low-voltage rotor |
| CN112059219B (en) * | 2020-09-02 | 2021-04-02 | 一重集团(黑龙江)重工有限公司 | Trial turning method and turning tool for nuclear power conventional island low-voltage rotor |
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Application publication date: 20140716 |