CN101972869B - Fork type blade root milling cutter of turbine blade - Google Patents
Fork type blade root milling cutter of turbine blade Download PDFInfo
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- CN101972869B CN101972869B CN2010105172631A CN201010517263A CN101972869B CN 101972869 B CN101972869 B CN 101972869B CN 2010105172631 A CN2010105172631 A CN 2010105172631A CN 201010517263 A CN201010517263 A CN 201010517263A CN 101972869 B CN101972869 B CN 101972869B
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Abstract
The invention provides a fork type blade root milling cutter of a turbine blade, which comprises a cutter shaft and a plurality of disc cutter bodies, wherein all the disc cutter bodies are assembled on the cutter shaft in parallel, each disc cutter body is in the cross-section shape of a boss structure, the outer edge and the shoulder of each disc cutter body are respectively provided with a plurality of cutter blades and cutter rests thereof which are uniformly distributed in the circumferential direction, the cutter blades are mounted on the cutter rests, the cutter rests are mounted on the cutter bodies, and each cutter rest is provided with an axial displacement adjusting mechanism. In the actual operating process of the milling cutter, the axial size of the milling cutter can be adjusted at any time, so that the machined blade root contour has small offset and small contour diameter error, and the milling cutter can be adapted to severe actual machining conditions, thereby improving the cutting and positioning accuracy, being safe and reliable, prolonging the service life of the cutter and achieving the advantages of convenient cutter changing, simple structure and convenient adjustment and operation.
Description
Technical field
The present invention relates to field of machining, specifically is the machine cut processing special-purpose milling cutter of the fork type blade root molded lines of turbine blade in a kind of turbomachinery.
Background technology
In the processing of the fork type blade root molded lines of turbine blade, generally use the disc milling cutter of assembly machine clip blade.Because the disc milling cutter generally all is that diameter is big, the structure of thin thickness, in processing and manufacturing, owing to its structural limitations, causes the accuracy of manufacture of its insert groove to be not easy to reach drawing requirement; Simultaneously; In the use course of work of milling cutter reality, because the release of the internal stress of cutter causes that the product size that processes is overproof, promptly the actual cut width of cutter becomes big; Make that the molded lines width error of one group of blade root molded lines is more overproof, even make milling cutter scrap.Perhaps; Even guaranteed the design accuracy of cutter during fabrication; But because actual processing conditions is relatively poor, actual conditions the such as for example main axis jerking of machining tool is big, knife bar bending all might make this milling cutter that cutting width is become and cause the blade root molded lines overproof greatly.
In the prior art; Processing for this prong of blade molded lines; Be welded type fork type blade root milling cutter, whole high-speed steel formula fork type blade root milling cutter, or machine presss from both sides interchangeable fork type blade root milling cutter, all can't solve the blade root dimension overproof that above reason causes.Because the Tool in Cutting width error that the problem of execute-in-places such as the main axis jerking of machining tool, knife bar bending is brought and the deviation of position.
Summary of the invention
The object of the invention is to provide a kind of milling cutter construction that can carry out real-time regulated to the axial dimension of fork type blade root molded lines milling cutter.
The technical scheme that the present invention adopts is:
A kind of turbine blade fork type blade root milling cutter comprises cutter shaft and a plurality of plate-like cutter hub, and all plate-like cutter hubs are assemblied on the cutter shaft side by side; The cross sectional shape of said plate-like cutter hub is a boss structure; Outer rim, convex shoulder place at the plate-like cutter hub are provided with a plurality of blades and tool rest thereof respectively, are circumferentially to be uniformly distributed with, and blade is installed on the tool rest; Tool rest is installed on the cutter hub, and said tool rest has the axial displacement guiding mechanism.
The axial displacement guiding mechanism of said tool rest comprises the connection seat on the cutter hub, on this connection seat screw is arranged, and screw is also arranged on the said tool rest; Two screws are corresponding; On same center line, the hand of spiral of two screws is opposite, and a two-way threaded screw is housed in the screw; This screw has two sections screw threads that the hand of spiral is opposite, and corresponding matching connects seat screw and tool rest screw respectively.
Said blade and tool rest thereof are paired settings, are distributed in the left and right sides of installation position, and be separated from one another, in the circumferential interlaced arrangement of plate-like cutter hub.
Tool rest installation position on the said plate-like cutter hub is a circumferential recess, and said connection seat is positioned at this groove, is provided with adaptive briquetting in the groove, and this briquetting is fixed on the cutter hub through screw, and this briquetting is pressed abd fixed on tool rest on the cutter hub.
The beneficial effect that the present invention produces is:
Turbine blade fork type blade root milling cutter of the present invention; In the use course of work of reality; Can adjust the axial dimension of milling cutter at any time; Make the cutting width of cutter be difficult for producing error, the difficult deviation that produces of cutting position, make that the offset of the blade root molded lines that processing obtains is little, the molded lines diameter error is little.Enable to adapt to abominable actual processing conditions, the actual conditions such as main axis jerking and knife bar bending that are not subject to machining tool influence, and solve the blade root dimension overproof that above reason causes.Therefore, the cutting positioning accuracy of this turbine blade fork type blade root milling cutter is high, safe and reliable, and prolong greatly than prior art the service life of cutter.Simultaneously, this milling cutter tool changing is convenient, simple in structure, adjustment is swift to operate easy, is easy to use on a large scale and promote.
Description of drawings
Fig. 1 is the structural representation of turbine blade fork type blade root milling cutter;
Fig. 2 is the sketch map of the adjustable structure of turbine blade fork type blade root milling cutter;
Fig. 3 regulates the right TV structure sketch map of tool rest for dextrad;
Fig. 4 regulates the left TV structure sketch map of tool rest for dextrad;
Fig. 5 is the structural representation of groove.
Code name implication among the figure: 1-plate-like cutter hub, 2-screw, 3-connect seat, 4-briquetting, 5-blade, 6-tool rest, 7-bidirectional helical screw, 8-screw; The a-outer rim, b-single order convex shoulder, d-tool rest side, e-tool rest bottom surface, f-groove side, g-groove floor.
The specific embodiment
Like Fig. 1～shown in Figure 5: the present invention is a kind of turbine blade fork type blade root milling cutter, is plate-like combined type milling cutter, is formed on the milling cutter cutter shaft by a plurality of plate-like cutter hub 1 combine and assemble arranged side by side.The cross sectional shape of plate-like cutter hub 1 of the present invention has multiple versions such as single order boss, second order boss, three rank boss, and is consistent with processing leaf and root structure.The cross sectional shape of the plate-like cutter hub 1 in this instance is the single order boss structure, is provided with a plurality of blades 5 and tool rest 6 thereof respectively at the outer rim a and the single order convex shoulder b place of plate-like cutter hub 1, is circumferentially at the outer rim a place of plate-like cutter hub 1 and single order convex shoulder b place respectively to be uniformly distributed with.Blade 5 is installed on the tool rest 6, and tool rest 6 is installed on the plate-like cutter hub 1, and simultaneously, tool rest 6 is provided with the axial displacement guiding mechanism.Blade 5 is movably connected in the top of tool rest 6 through the screw 2 that is parallel to card, and blade 5 is connected one with tool rest 6; Simultaneously, after blade 5 wearing and tearing, can also very conveniently change blade 5 apace, need not change other structures of milling cutter, save ample resources and time.Blade 5 and tool rest 6 thereof are paired settings, are distributed in the left and right sides of installation position separately respectively, and be separated from one another, in the circumferential interlaced arrangement of plate-like cutter hub 1.It is a pair of to be that adjacent two cover blades 5 and tool rest 6 thereof constitute, and a cover is arranged in the left side of its installation position, axial adjustment left; Another set of the right that is arranged in its installation position, axial adjustment to the right.
The tool rest 6 of turbine blade fork type blade root milling cutter of the present invention has the axial displacement guiding mechanism, is about to blade 5 and tool rest 6 thereof and is installed on the plate-like cutter hub 1 through the axial displacement guiding mechanism.The axial displacement guiding mechanism of tool rest 6 comprises the connection seat 3 on the plate-like cutter hub 1, connect seat 3 and be positioned at this groove, and surface that should connections seat 3 is parallel to the card of plate-like cutter hub 1, and the front and rear surfaces of connection 3 has screw.Simultaneously, also have screw on the tool rest 6.The screw that connects on the seat 3 is corresponding with the screw on the seat 6; On same center line; The hand of spiral of two screws is opposite, and a two-way threaded screw 7 is housed in the screw, and this bidirectional helical screw 7 has two sections screw threads that the hand of spiral is opposite; Corresponding matching connects the screw of seat 3 and the screw of tool rest 6 respectively, and tool rest 6 is movably connected in through the bidirectional helical screw 7 perpendicular to card and connects on the seat 3.Turn bidirectional helical screw 7, can make tool rest 6, and connect seat 3 and take place in opposite directions or reverse relative displacement, thereby change the cutting position of blade 5, the cutting width of promptly regulating milling cutter along the direction of bidirectional helical screw 7.
Installation position on the plate-like cutter hub 1 is a circumferential recess, and the cross section of this groove is trapezoidal, and promptly the sidewall of groove is the plane with constant slope.Tool rest 6 is the prismatoid shape, tool rest side d and groove side f corresponding matching, tool rest bottom surface e and groove floor g corresponding matching, and promptly tool rest side d and tool rest bottom surface e are the locating surfaces of tool rest 6.
In the groove on tool rest 6 installation positions that left-hand is regulated: connection seat 3 is arranged in the right of groove, the tool rest 6 that left-hand is regulated is movably connected in the left side that connects seat 3.In like manner, in the groove on tool rest 6 installation positions regulated of dextrad: connect the left side that seat 3 is arranged in groove, the tool rest 6 that dextrad is regulated is movably connected in the right side that connects seat 3.The tool rest 6 that this a pair of left-hand is regulated can be along the direction of bidirectional helical screw 7 with the tool rest 6 that dextrad is regulated; Be the axial of plate-like cutter hub 1; Respectively in the and arranged on left and right sides activity of bidirectional helical screw 7; Make the cutting position of two blades 5 change, thereby make the cutting width of fork type blade root milling cutter change.
Make milling cutter stable performance when cutting, tool rest 6 in the cutwork process, can not relatively move, will guarantee milling cutter when work, tool rest side d and groove side f, tool rest bottom surface e and groove floor g fit tightly.Therefore, must use the stopping means and the hold down gag of tool rest 6, tool rest 6 is fixed on inside grooves, guarantee can not occur endwisely slipping and radial motion when it uses, guarantee the stability of cutting.Connecting seat 3 is axially stop blocks of tool rest 6, the scope that restriction tool rest 6 is axially movable; Briquetting 4 is radial compaction devices of tool rest 6, is arranged between tool rest 6 and the groove, is installed on the groove.Briquetting 4 has the counterbore that runs through upper and lower surface, and the counterbore position of the corresponding briquetting 4 of bottom portion of groove has screw.During installation, side and the briquetting 4 of tool rest 6 are fitted tightly after, through screw 8 briquetting 4 is installed in the groove, make the fixed-site of tool rest 6 in inside grooves.Thereby carry out fixed-site through briquetting 4,8 pairs of tool rests of screw 6, the cutting when guaranteeing milling cutter work is stable.
In use, regulate the machining accuracy of milling cutter if desired, make it to be adapted to the width requirement of blade root slot, can solve the problems referred to above through the method for position of adjustment tool rest 6.Step is following;
1. plate-like cutter hub 1 is lain against (dull and stereotyped like marble) on the horizontal plane, measure the position of cutting edge, and establish zero with dial gauge.
2. screw 8 is unscrewed, rotated bidirectional helical screw 7 with inner hexagon spanner, tool rest 6 will move so, observes the variable quantity of dial gauge, reaches the size that needs to regulate and just stops operating.
3. last, tighten screw 8, just reached the purpose of regulating size.
Claims (3)
1. a turbine blade fork type blade root milling cutter comprises cutter shaft and a plurality of plate-like cutter hub, and all plate-like cutter hubs are assemblied on the cutter shaft side by side; The cross sectional shape of said plate-like cutter hub is a boss structure; Outer rim, convex shoulder place at the plate-like cutter hub are provided with a plurality of blades and tool rest thereof respectively, are circumferentially to be uniformly distributed with, and blade is installed on the tool rest; Tool rest is installed on the cutter hub, it is characterized in that: said tool rest has the axial displacement guiding mechanism; The axial displacement guiding mechanism of said tool rest comprises the connection seat on the cutter hub, on this connection seat screw is arranged, and screw is also arranged on the said tool rest; Two screws are corresponding; On same center line, the hand of spiral of two screws is opposite, and a two-way threaded screw is housed in the screw; This screw has two sections screw threads that the hand of spiral is opposite, and corresponding matching connects seat screw and tool rest screw respectively.
2. turbine blade fork type blade root milling cutter according to claim 1 is characterized in that said blade and tool rest thereof are paired settings, is distributed in the left and right sides of installation position, and is separated from one another, in the circumferential interlaced arrangement of plate-like cutter hub.
3. turbine blade fork type blade root milling cutter according to claim 1; It is characterized in that: the tool rest installation position on the said plate-like cutter hub is a circumferential recess; Said connection seat is positioned at this groove; Be provided with adaptive briquetting in the groove, this briquetting is fixed on the cutter hub through screw, and this briquetting is pressed abd fixed on tool rest on the cutter hub.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105172631A CN101972869B (en) | 2010-10-25 | 2010-10-25 | Fork type blade root milling cutter of turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105172631A CN101972869B (en) | 2010-10-25 | 2010-10-25 | Fork type blade root milling cutter of turbine blade |
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| Publication Number | Publication Date |
|---|---|
| CN101972869A CN101972869A (en) | 2011-02-16 |
| CN101972869B true CN101972869B (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010105172631A Active CN101972869B (en) | 2010-10-25 | 2010-10-25 | Fork type blade root milling cutter of turbine blade |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106735489B (en) * | 2016-11-25 | 2018-11-30 | 株洲钻石切削刀具股份有限公司 | A kind of Multifunction milling cutting knife tool |
| CN109702260A (en) * | 2018-11-28 | 2019-05-03 | 中铁宝桥集团有限公司 | The process tool and processing method of medium-and low-speed maglev F rail lateral surface |
| CN109482951A (en) * | 2018-12-25 | 2019-03-19 | 豫北凯斯特隆（新乡）汽车科技有限公司 | A kind of cutter of processing motor turning centre joint fork |
| CN110450247A (en) * | 2019-09-10 | 2019-11-15 | 苏州市匠心工具有限公司 | A kind of anti-tear screw-on cutter of deburring |
Citations (5)
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|---|---|---|---|---|
| CN2284113Y (en) * | 1995-04-27 | 1998-06-17 | 顾雪林 | Two-way adjustable close teeth turnable face hobbing |
| CN1496770A (en) * | 2002-09-27 | 2004-05-19 | �ֶ��ع����ɷ�����˾ | Method and equipment for manufacturing fork root of turbine |
| CN101069933A (en) * | 2007-06-19 | 2007-11-14 | 东方电气集团东方汽轮机有限公司 | Combined fork-type blade-root milling cutter |
| CN101628347A (en) * | 2009-07-29 | 2010-01-20 | 常州市西夏墅工具研究所有限公司 | Stream turbine rotor blade root arc groove roughing milling cutter |
| CN201470969U (en) * | 2009-06-08 | 2010-05-19 | 南通中能机械制造有限公司 | Face and side milling cutter of blade root outer groove and chamfer of steam turbine blade |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8807881B2 (en) * | 2008-08-29 | 2014-08-19 | Osg Corporation | Throwaway rotary cutting tool |
-
2010
- 2010-10-25 CN CN2010105172631A patent/CN101972869B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2284113Y (en) * | 1995-04-27 | 1998-06-17 | 顾雪林 | Two-way adjustable close teeth turnable face hobbing |
| CN1496770A (en) * | 2002-09-27 | 2004-05-19 | �ֶ��ع����ɷ�����˾ | Method and equipment for manufacturing fork root of turbine |
| CN101069933A (en) * | 2007-06-19 | 2007-11-14 | 东方电气集团东方汽轮机有限公司 | Combined fork-type blade-root milling cutter |
| CN201470969U (en) * | 2009-06-08 | 2010-05-19 | 南通中能机械制造有限公司 | Face and side milling cutter of blade root outer groove and chamfer of steam turbine blade |
| CN101628347A (en) * | 2009-07-29 | 2010-01-20 | 常州市西夏墅工具研究所有限公司 | Stream turbine rotor blade root arc groove roughing milling cutter |
Non-Patent Citations (1)
| Title |
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| 龚学清.叉型叶根槽铣刀的重磨与检测探讨.《重型机械科技》.2002,(第01期),第33-39页. * |
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| CN101972869A (en) | 2011-02-16 |
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