CN104162683B - The numerical-control processing method of turbine rotor sawtooth race - Google Patents
The numerical-control processing method of turbine rotor sawtooth race Download PDFInfo
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- CN104162683B CN104162683B CN201410188447.6A CN201410188447A CN104162683B CN 104162683 B CN104162683 B CN 104162683B CN 201410188447 A CN201410188447 A CN 201410188447A CN 104162683 B CN104162683 B CN 104162683B
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- race
- translot
- sawtooth
- notch
- face
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B1/00—Methods for turning or working essentially requiring the use of turning-machines; Use of auxiliary equipment in connection with such methods
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- Mechanical Engineering (AREA)
- Milling Processes (AREA)
Abstract
The numerical-control processing method of turbine rotor sawtooth race, belongs to field of machining.For the problem solving to use high-speed steel forming tool working (machining) efficiency low at present.Described method realizes based on 1 straight trough cutting knife, 1 bottom land process tool and 2 sawtooth translot cutters, and uses numerical control to be controlled；Described method includes: be axial benchmark, according to the rules parameter with the good impeller outsourcing of car, uses the radial direction straight trough of straight trough cutting knife processing band angle, makes the left and right sides end surface symmetric of race；Parameter according to the rules, uses and the bottom land process tool car quasi-race bottom land of the radius such as bottom land；It is axial base point for checking cutting tool and with impeller cylindrical for radial direction base point for checking cutting tool with impeller air inlet side end face, use 2 sawtooth translot cutters respectively, parameter according to the rules, the sawtooth translot of processing race, utilizes described sawtooth translot cutter that race notch both sides end face is carried out roughing, non-working surface polish and work surface polish successively.It is applicable to the processing of turbine rotor sawtooth race.
Description
Technical field
The invention belongs to field of machining, particularly to the digital control processing field of a kind of impeller of steam turbine rotor.
Background technology
The race of certain turbine rotor grade impeller has the feature (being now referred to as sawtooth race) of structure Special complex, race
Indentation, has 4 load work surfaces, and between work surface, size tolerance requirements is strict, race trough portion two sides in
Certain angle, wheel slot space is little, and structure is complicated, and the accuracy of flute profile, symmetry requirement are the highest.Traditional high-speed steel shapes
Tool sharpening efficiency is low, and the machining accuracy of sawtooth translot is low, and cutter easily weares and teares, and easily occurs unexpected feelings such as forging a knife in processing
Condition.
Summary of the invention
The problem that the invention aims to solve to use high-speed steel forming tool working (machining) efficiency low at present, the present invention provides one
Plant the numerical-control processing method of turbine rotor sawtooth race.
The numerical-control processing method of the turbine rotor sawtooth race of the present invention,
Described processing method realizes based on 1 straight trough cutting knife, 1 bottom land process tool and 2 sawtooth translot cutters,
Described processing method uses numerical control to be controlled realizing；
Described processing method comprises the steps:
Step one: be axial benchmark with the outsourcing of the good impeller of car, the parameter specified according to race, use the processing of straight trough cutting knife
With the radial direction straight trough of angle, and ensure the left and right sides end surface symmetric of race；
Step 2: according to the regulation parameter of race bottom land, uses and the bottom land process tool car quasi-race bottom land of the radius such as bottom land；
Step 3: be axial base point for checking cutting tool and with impeller cylindrical for radial direction base point for checking cutting tool with impeller air inlet side end face, uses respectively
2 sawtooth translot cutters, according to the regulation parameter of race sawtooth translot, the sawtooth translot of processing race, utilize described sawtooth
Translot cutter carries out roughing, non-working surface polish and work surface polish successively to race notch both sides end face.
The beneficial effects of the present invention is, this method is applicable to the processing of turbine rotor sawtooth race, and this method employs altogether
4 cutters complete side entry machining, add man-hour, and with impeller cylindrical 1 for radially base point for checking cutting tool, race notch air inlet side end face is
Axially base point for checking cutting tool.First use straight trough cutting knife, be the processing of axial benchmark with impeller end face, band angle radially straight trough.Re-use
The quasi-bottom land of cutter vehicle with radiuses such as bottom lands.Finally use sawtooth translot cutter, add working drawing sawtooth translot, including roughing,
Non-working surface polish, work surface polish.Owing to using Digit Control Machine Tool, improve machining accuracy, owing to having used work instead
The higher cutter of rotating speed, improves working (machining) efficiency.
Accompanying drawing explanation
Fig. 1 is the principle schematic processing turbine rotor sawtooth race in detailed description of the invention one.
Fig. 2 is the principle schematic processing turbine rotor sawtooth race in detailed description of the invention two.
Fig. 3 is the principle schematic of the bottom land processing turbine rotor sawtooth race in detailed description of the invention two.
Fig. 4 is the principle schematic of the left side sawtooth translot of rough turn race in detailed description of the invention three.
Fig. 5 is the principle schematic of the right side sawtooth translot of rough turn race in detailed description of the invention three.
Fig. 6 is the principle schematic of the left side sawtooth translot non-working surface of finish turning race in detailed description of the invention three.
Fig. 7 is the principle schematic of the right side sawtooth translot non-working surface of finish turning race in detailed description of the invention three.
Fig. 8 is the principle schematic of the left side sawtooth translot work surface of finish turning race in detailed description of the invention three.
Fig. 9 is the principle schematic of the right side sawtooth translot work surface of finish turning race in detailed description of the invention three.
Figure 10 is the principle schematic of the fillet of falling race in detailed description of the invention three.Wherein Rm and Rn is the fillet of falling race.
Detailed description of the invention
Detailed description of the invention one: combine Fig. 1 and present embodiment is described, the turbine rotor sawtooth race described in present embodiment
Numerical-control processing method, described processing method is based on 1 straight trough cutting knife, 1 bottom land process tool and 2 sawtooth translots
Cutter realizes, and described processing method uses numerical control to be controlled realizing；
Described processing method comprises the steps:
Step one: with the outsourcing 2 of the good impeller of car for axial benchmark, the parameter specified according to race, use straight trough cutting knife to add
The radial direction straight trough of work band angle, and ensure the left and right sides end surface symmetric of race；
Step 2: according to the regulation parameter of race bottom land, uses and the bottom land process tool car quasi-race bottom land of the radius such as bottom land；
Step 3: be axial base point for checking cutting tool and with impeller cylindrical 1 for radially base point for checking cutting tool with impeller air inlet side end face, makes respectively
With 2 sawtooth translot cutters, according to the regulation parameter of race sawtooth translot, the sawtooth translot of processing race, utilize described saw
Tooth translot cutter carries out roughing, non-working surface polish and work surface polish successively to race notch both sides end face.
Described step 2 be the left end face 3 of notch be axial zero point, parameter specify according to race, use bottom land to process cutter
The tool quasi-bottom land of car, depth H, as shown in Figure 3.
Detailed description of the invention two: combine Fig. 2 and present embodiment is described, present embodiment is to described in detailed description of the invention one
The further restriction of the numerical-control processing method of turbine rotor sawtooth race, described step one comprises the steps:
Step is one by one: with the outsourcing 2 of the good impeller of car for axial benchmark, specifies parameter according to straight trough, uses straight trough lockstitch trimming m/c
The width w of collimation groove notch and degree of depth L, degree of depth L=safe distance+wheel groove depth h；Described safe distance is for straight before processing
Groove cutting knife is apart from the size of the cylindrical of described impeller；
Step one two: by the outsourcing 2 of the good impeller of car to cutter, parameter returns the left end face 3 of race notch according to the rules is axle
To zero point, a degree inclined-plane of the quasi-notch of car and race, it is ensured that the left and right sides end surface symmetric of race, it is ensured that tolerance is between 0-0.02
mm。
Detailed description of the invention three: combine Fig. 4 to Figure 10 and illustrate that present embodiment, present embodiment are to detailed description of the invention
The further restriction of the numerical-control processing method of the turbine rotor sawtooth race described in, described step 3 comprises the steps:
Step 3 one: with the left end face 3 of impeller cylindrical 1 and race notch to cutter, and with the left end face 3 of notch as axle
To zero point, according to the race sawtooth translot parameter of regulation, each translot in rough turn left side；
Step 3 two: with impeller cylindrical 1 and race notch its right end face 6 to cutter, and with notch left end face 3 for axial zero
Point, according to the race sawtooth translot parameter of regulation, each translot in rough turn right side；
Step 3 three: with the left end face 3 of impeller cylindrical 1 and race notch to cutter, and with the left end face 3 of notch as axle
To zero point, according to the race sawtooth translot parameter of regulation, each translot non-working surface 5 on the left of finish turning；
Step 3 four: with its right end face 6 of impeller cylindrical 1 and race notch to cutter, and with the left end face 3 of notch as axle
To zero point, according to the race sawtooth translot parameter of regulation, each translot non-working surface 5 on the right side of finish turning；
Step 3 five: with the left end face 3 of impeller cylindrical 1 and race notch to cutter, and with the left end face 3 of notch as axle
To zero point, according to the race sawtooth translot parameter of regulation, each translot work surface 4 on the left of finish turning；
Step 3 six: with its right end face 6 of impeller cylindrical 1 and race notch to cutter, and with the left end face 3 of notch as axle
To zero point, according to the race sawtooth translot parameter of regulation, each translot work surface 4 on the right side of finish turning；
Step Radix Notoginseng: utilize step 3 one to three six, be processed into race, makes impeller cylindrical 1 to the first tooth of the race of processing
The distance of load-carrying surface is between 12.5～12.9mm, and makes impeller cylindrical 1 be less than to the distance difference of left and right sides work surface
0.02mm；
Step 3 eight: with impeller cylindrical 1 and race notch left end face 3 to cutter, and with notch left end face 3 for axial zero
Point, uses the straight trough cutting knife fillet of falling race.
Claims (3)
1. the numerical-control processing method of turbine rotor sawtooth race, is characterized in that being, described processing method is straight based on 1
Groove cutting knife, 1 bottom land process tool and 2 sawtooth translot cutter realizations, described processing method uses numerical control to be controlled reality
Existing；
Described processing method comprises the steps:
Step one: be axial benchmark with the outsourcing (2) of the good impeller of car, the parameter specified according to race, use straight trough cutting knife
The radial direction straight trough of processing band angle, and ensure the left and right sides end surface symmetric of race；
Step 2: according to the regulation parameter of race bottom land, uses and the bottom land process tool car quasi-race bottom land of the radius such as bottom land；
Step 3: be axial base point for checking cutting tool and with impeller cylindrical (1) for radially base point for checking cutting tool with impeller air inlet side end face, respectively
Use 2 sawtooth translot cutters, according to the regulation parameter of race sawtooth translot, the sawtooth translot of processing race, utilize described saw
Tooth translot cutter carries out roughing, non-working surface polish and work surface polish successively to race notch both sides end face.
The numerical-control processing method of turbine rotor sawtooth race the most according to claim 1, it is characterised in that described step
Rapid one comprises the steps:
Step is one by one: be axial benchmark with the outsourcing (2) of the good impeller of car, specifies parameter according to straight trough, uses straight trough cutting knife
The width w of car collimation groove notch and degree of depth L, degree of depth L=safe distance+wheel groove depth h；Described safe distance is straight trough before processing
Cutting knife is apart from the size of the cylindrical of described impeller；
Step one two: by the outsourcing (2) of the good impeller of car to cutter, parameter returns the left end face (3) of race notch according to the rules
For axial zero point, a degree inclined-plane of the quasi-notch of car and race, it is ensured that the left and right sides end surface symmetric of race, it is ensured that tolerance between
0-0.02mm。
The numerical-control processing method of turbine rotor sawtooth race the most according to claim 2, it is characterised in that described step
Rapid three comprise the steps:
Step 3 one: with the left end face (3) of impeller cylindrical (1) and race notch to cutter, and with the left end face of notch
(3) it is axial zero point, according to the race sawtooth translot parameter of regulation, each translot in rough turn left side；
Step 3 two: with impeller cylindrical (1) and race notch its right end face (6) to cutter, and with notch left end face (3)
For axial zero point, according to the race sawtooth translot parameter of regulation, each translot in rough turn right side；
Step 3 three: with the left end face (3) of impeller cylindrical (1) and race notch to cutter, and with the left end face of notch
(3) it is axial zero point, according to the race sawtooth translot parameter of regulation, each translot non-working surface (5) on the left of finish turning；
Step 3 four: with its right end face (6) of impeller cylindrical (1) and race notch to cutter, and with the left end face of notch
(3) it is axial zero point, according to the race sawtooth translot parameter of regulation, each translot non-working surface (5) on the right side of finish turning；
Step 3 five: with the left end face (3) of impeller cylindrical (1) and race notch to cutter, and with the left end face of notch
(3) it is axial zero point, according to the race sawtooth translot parameter of regulation, each translot work surface (4) on the left of finish turning；
Step 3 six: with its right end face (6) of impeller cylindrical (1) and race notch to cutter, and with the left end face of notch
(3) it is axial zero point, according to the race sawtooth translot parameter of regulation, each translot work surface (4) on the right side of finish turning；
Step Radix Notoginseng: utilize step 3 one to three six, be processed into race, makes impeller cylindrical (1) to the first of the race of processing
The distance of tooth load-carrying surface is between 12.5mm～12.9mm, and makes impeller cylindrical (1) differ not to the distance of left and right sides work surface
More than 0.02mm；
Step 3 eight: with impeller cylindrical (1) and race notch left end face (3) to cutter, and with notch left end face (3)
For axial zero point, use the straight trough cutting knife fillet of falling race.
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| CN201410188447.6A CN104162683B (en) | 2014-05-06 | 2014-05-06 | The numerical-control processing method of turbine rotor sawtooth race |
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| CN201410188447.6A CN104162683B (en) | 2014-05-06 | 2014-05-06 | The numerical-control processing method of turbine rotor sawtooth race |
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| CN104162683A CN104162683A (en) | 2014-11-26 |
| CN104162683B true CN104162683B (en) | 2016-08-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104028782A (en) * | 2014-06-06 | 2014-09-10 | 中国南方航空工业(集团)有限公司 | Lathe machining method for end face deep narrow groove in aerial engine crankcase |
| CN111266603A (en) * | 2020-01-15 | 2020-06-12 | 哈尔滨汽轮机厂有限责任公司 | Tooth-shaped wheel groove machining method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745673A (en) * | 2009-12-18 | 2010-06-23 | 东方电气集团东方汽轮机有限公司 | Processing method of turbo machine rotor wheel groove and milling cutter |
| CN102350525A (en) * | 2011-09-16 | 2012-02-15 | 哈尔滨汽轮机厂有限责任公司 | Method for machining asymmetric wheel groove of steam turbine rotor |
| CN102773655A (en) * | 2012-07-20 | 2012-11-14 | 哈尔滨汽轮机厂有限责任公司 | Repairing method of steam turbine rotor fir type wheel groove |
| CN103267500A (en) * | 2013-04-18 | 2013-08-28 | 哈尔滨汽轮机厂有限责任公司 | Measuring tool for measuring dimensional tolerance between carrying surface and reference surface of fir-type race of steam turbine rotor and measuring method of measuring tool |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3880474B2 (en) * | 2002-07-11 | 2007-02-14 | キヤノン株式会社 | Mold processing method |
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2014
- 2014-05-06 CN CN201410188447.6A patent/CN104162683B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101745673A (en) * | 2009-12-18 | 2010-06-23 | 东方电气集团东方汽轮机有限公司 | Processing method of turbo machine rotor wheel groove and milling cutter |
| CN102350525A (en) * | 2011-09-16 | 2012-02-15 | 哈尔滨汽轮机厂有限责任公司 | Method for machining asymmetric wheel groove of steam turbine rotor |
| CN102773655A (en) * | 2012-07-20 | 2012-11-14 | 哈尔滨汽轮机厂有限责任公司 | Repairing method of steam turbine rotor fir type wheel groove |
| CN103267500A (en) * | 2013-04-18 | 2013-08-28 | 哈尔滨汽轮机厂有限责任公司 | Measuring tool for measuring dimensional tolerance between carrying surface and reference surface of fir-type race of steam turbine rotor and measuring method of measuring tool |
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