CN203696497U - Numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of shroud of steam turbine blade - Google Patents

Numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of shroud of steam turbine blade Download PDF

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Publication number
CN203696497U
CN203696497U CN201320564181.1U CN201320564181U CN203696497U CN 203696497 U CN203696497 U CN 203696497U CN 201320564181 U CN201320564181 U CN 201320564181U CN 203696497 U CN203696497 U CN 203696497U
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CN
China
Prior art keywords
base
screw rod
blade
shroud
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.)
Expired - Fee Related
Application number
CN201320564181.1U
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Chinese (zh)
Inventor
张望梧
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Nantong Zhongneng Machinery Co Ltd
Original Assignee
Nantong Zhongneng Machinery Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Nantong Zhongneng Machinery Co Ltd filed Critical Nantong Zhongneng Machinery Co Ltd
Priority to CN201320564181.1U priority Critical patent/CN203696497U/en
Application granted granted Critical
Publication of CN203696497U publication Critical patent/CN203696497U/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

The utility model relates to a numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of a shroud of a steam turbine blade. The tool is characterized by comprising a base, a root locking assembly and a shroud locking assembly, wherein the base is fixed on a vertical rotating table of a numerical-controlmachining centerthrough bolts; a mounting plate is mounted on the upper surface of the base; a blade root limiting plate and a side limiting plate are mounted on the mounting plate; the root and shroud locking assemblies are identical in structure, each of the root and shroud locking assemblies comprises a screw vertically arranged on the back side of the blade, and the screws are in threaded connection with lock nuts and equipped with press plates. The to-be-machined blade is positioned by the blade root limiting plate and the side limiting plate, and the press plates and the lock nuts are matched to press the blade tightly; the inner and back specially-shaped radiating surfaces of the shroud are machined through rotation of the numerical-controlmachining center by a radiationline angle, sizes, shapes and smoothness degrees meet standard requirements, and position degrees of the inner and back specially-shaped radiating surfaces are better than those of a conventionally-molded cutter due to one-timeclamp; no cutter is required to be customized, so that the machining cycle is greatly shortened.

Description

Back of the body special-shaped radiating surface frock in a kind of numerical control finish-milling turbine blade shroud
Technical field
The utility model relates to a kind of clamping tooling, particularly back of the body special-shaped radiating surface frock in a kind of numerical control finish-milling turbine blade shroud.
Background technology
Turbine blade is in the gas channel of steam turbine, to realize the conversion of air-flow function and the strength member that changes airflow direction, and it comprises moving vane and stator blade.In blade, there is the large moving vane of a class, as shown in Figure 1, the interior radiating surface at its integral shroud position and back of the body radiating surface are designed to recessed special-shaped face and protruding special-shaped face, the processing of this characteristic surface of picture, by the method for current routine be: as shown in Figure 2,3, need groove forming cutter and boss forming cutter customized and its profiling.Its shortcoming is: the customization time of cutter is long, general 50 ~ 60 days cycles, cutter return after before fine finishining, first to, this position roughing, stay 0.5mm finish-milling, because these two radiating surfaces become the radiation angle of 4.39 °, molding cutter again must be on horizontal milling machine processing characteristics face, so must do interior radiating surface frock and back of the body radiating surface frock, carry out respectively finish-milling, complicated and loaded down with trivial details.
Utility model content
The technical problems to be solved in the utility model is to provide a kind of back of the body special-shaped radiating surface frock in back of the body radiating surface processing in integral shroud and the high turbine blade shroud of machining accuracy that can clamped one time realize.
For solving the problems of the technologies described above, the technical solution of the utility model is: back of the body special-shaped radiating surface frock in a kind of numerical control finish-milling turbine blade shroud, its innovative point is: base, and base entirety is rectangle, base is bolted on the vertical rotary workbench of numerical control machining center; Blade root major axis side limiting plate and the blade root minor axis side limit base for locating blades installed in one end, upper surface of base, and the base other end is installed integral shroud support plate;
Root latch assembly, comprises screw rod A, locking nut A and pressing plate A, and described screw rod A is arranged on blade root minor axis side limit base or base, the screw rod A top locking nut A that is threaded, and described screw rod A is equipped with a pressing plate A who has through hole;
Bizet latch assembly, comprise screw rod B, screw rod C, locking nut B and pressing plate B, described screw rod B is vertically set on the integral shroud rear side of blade, and locking nut B is threaded on screw rod B, described screw rod B is equipped with Yi Ge center to open the pressing plate B of kidney slot, and the threaded one end of pressing plate B is connected with screw rod C.
The utility model has the advantage of: base is fixed on digital control vertical rotary table, blade to be processed is placed on the installing plate with blade profiling, undertaken axially and radial location by blade root major axis side limiting plate and blade root minor axis side limiting plate, coordinated and compressed respectively near the blade root and integral shroud of blade by pressing plate and locking nut, the integral shroud of blade upward; When finish-milling, numerical control machining center adopts the lengthening alloy milling cutter of ¢ 8mm, carries out successively: half finish-milling inner groovy special-shaped face, tool changing finish-milling inner groovy special-shaped face on vertical numerical control machining center; Rotate 4.39 ° of radiation line angles of vertical vertical rotary workbench, make to back of the body radiation in vertical position; Half finish-milling back of the body boss special-shaped face; Tool changing finish-milling back of the body boss special-shaped face.The processing that adopts this frock to carry out in integral shroud, carry on the back radiation special-shaped face, size shape and fineness all reach standard-required, and due to clamped one time, the more conventional forming cutter of its position degree is better; In addition, without customization cutter, greatly shortened the process-cycle.
Accompanying drawing explanation
Fig. 1 is the front view of large moving vane in the utility model.
Fig. 2 is the top view of large moving vane in the utility model.
Fig. 3 is traditional large moving vane processing groove forming cutter structural representation.
Fig. 4 is traditional large moving vane processing boss forming knife structure schematic diagram.
Fig. 5 carries on the back the clamping state front view of special-shaped radiating surface frock on vertical rotary workbench in numerical control finish-milling turbine blade shroud in the utility model.
Fig. 6 carries on the back the clamping state top view of special-shaped radiating surface frock on vertical rotary workbench in numerical control finish-milling turbine blade shroud in the utility model.
The specific embodiment
As shown in Figure 5,6, comprise base 1, root latch assembly and bizet latch assembly.
Concrete: base 1, base 1 entirety is rectangle, base 1 is bolted on the vertical rotary workbench 2 of numerical control machining center, blade root major axis side limiting plate 3 and the blade root minor axis side limit base 4 for locating blades installed in one end, upper surface of base 1, and base 1 other end is installed integral shroud support plate 5.
Blade is after being placed on base 1, and integral shroud part is supported by integral shroud support plate, and leaf root part is positioned by blade root major axis side limiting plate 3 and blade root minor axis side limit base 4.
Blade two ends are respectively by root latch assembly and integral shroud latch assembly fixing and locking.
Wherein, root latch assembly, comprises screw rod A51, locking nut A52 and pressing plate A53, and screw rod A51 is arranged on blade root minor axis side limit base 4 or base 1, the screw rod A51 top locking nut A52 that is threaded, screw rod A51 is equipped with a pressing plate A53 who has through hole.
When blade root locking, the locking nut A52 that outwards winding, it is upper that pressing plate A53 is sleeved on screw rod A51 by through hole, then screw on locking nut A52, and then compressed the upper surface of blade root by pressing plate A53.
Bizet latch assembly, comprise screw rod B61, screw rod C62, locking nut B63 and pressing plate B64, screw rod B61 is vertically set on the integral shroud rear side of blade, locking nut B63 is threaded on screw rod B61, screw rod B61 is equipped with Yi Ge center to open the pressing plate B64 of kidney slot, and the threaded one end of pressing plate B64 is connected with screw rod C62.
When integral shroud locking, it is upper that pressing plate B64 is first sleeved on screw rod B61 by kidney slot, then screw on locking nut B63, by the end of screw rod C62 jack-up pressing plate B64, makes the front end of pressing plate B64 compress the upper surface of integral shroud downwards.

Claims (1)

1. a back of the body special-shaped radiating surface frock in numerical control finish-milling turbine blade shroud, is characterized in that: comprise base, root latch assembly and bizet latch assembly,
Base, base entirety is rectangle, base is bolted on the vertical rotary workbench of numerical control machining center; Blade root major axis side limiting plate and the blade root minor axis side limit base for locating blades installed in one end, upper surface of base, and the base other end is installed integral shroud support plate;
Root latch assembly, comprises screw rod A, locking nut A and pressing plate A, and described screw rod A is arranged on blade root minor axis side limit base or base, the screw rod A top locking nut A that is threaded, and described screw rod A is equipped with a pressing plate A who has through hole;
Bizet latch assembly, comprise screw rod B, screw rod C, locking nut B and pressing plate B, described screw rod B is vertically set on the integral shroud rear side of blade, and locking nut B is threaded on screw rod B, described screw rod B is equipped with Yi Ge center to open the pressing plate B of kidney slot, and the threaded one end of pressing plate B is connected with screw rod C.
CN201320564181.1U 2013-09-12 2013-09-12 Numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of shroud of steam turbine blade Expired - Fee Related CN203696497U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201320564181.1U CN203696497U (en) 2013-09-12 2013-09-12 Numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of shroud of steam turbine blade

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201320564181.1U CN203696497U (en) 2013-09-12 2013-09-12 Numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of shroud of steam turbine blade

Publications (1)

Publication Number Publication Date
CN203696497U true CN203696497U (en) 2014-07-09

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Application Number Title Priority Date Filing Date
CN201320564181.1U Expired - Fee Related CN203696497U (en) 2013-09-12 2013-09-12 Numerical-controlfinish-milling tool for inner and back specially-shaped radiating surfaces of shroud of steam turbine blade

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CN (1) CN203696497U (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107571070A (en) * 2017-09-14 2018-01-12 哈尔滨汽轮机厂有限责任公司 It is a kind of to be used to process the vehicle clamper that blade removes wet sump
CN109158911A (en) * 2018-08-07 2019-01-08 南通中能机械制造有限公司 Blower blade bores three thimble location holes and mills clamping position tooling
CN110142624A (en) * 2019-06-10 2019-08-20 哈尔滨汽轮机厂有限责任公司 The Combined machining fixture and processing method in a kind of steam turbine bacterial type blade root class blade radial face
CN114227288A (en) * 2021-12-28 2022-03-25 无锡透平叶片有限公司 Arbor blade turning reinforcing device

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107571070A (en) * 2017-09-14 2018-01-12 哈尔滨汽轮机厂有限责任公司 It is a kind of to be used to process the vehicle clamper that blade removes wet sump
CN109158911A (en) * 2018-08-07 2019-01-08 南通中能机械制造有限公司 Blower blade bores three thimble location holes and mills clamping position tooling
CN110142624A (en) * 2019-06-10 2019-08-20 哈尔滨汽轮机厂有限责任公司 The Combined machining fixture and processing method in a kind of steam turbine bacterial type blade root class blade radial face
CN114227288A (en) * 2021-12-28 2022-03-25 无锡透平叶片有限公司 Arbor blade turning reinforcing device
CN114227288B (en) * 2021-12-28 2024-04-19 无锡透平叶片有限公司 Shaft handle blade turning reinforcing device

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C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20140709

Termination date: 20150912

EXPY Termination of patent right or utility model