CN101767288B - Universal rotary milling fixture of steam turbine blade - Google Patents
Universal rotary milling fixture of steam turbine blade Download PDFInfo
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- CN101767288B CN101767288B CN2010100044463A CN201010004446A CN101767288B CN 101767288 B CN101767288 B CN 101767288B CN 2010100044463 A CN2010100044463 A CN 2010100044463A CN 201010004446 A CN201010004446 A CN 201010004446A CN 101767288 B CN101767288 B CN 101767288B
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Abstract
The invention relates to a universal rotary milling fixture of a steam turbine blade. The universal rotary milling fixture comprises a bottom plate, cover plates and tips, wherein a middle body and a middle body fixing device are slidingly assembled on the bottom plate; two cover plates are provided, and one tip is assembled on each cover plate; the cover plates and cover plate fixing devices are slidingly assembled on the middle body; and the sliding direction of the cover plate is intersected with the sliding direction of the middle body. In the invention, the two tips are separately arranged on the two cover plates, the cover plates can slide along the middle body, and the middle body can slide on the bottom plate, thereby realizing the positioning of the tips at any point in a vertical plane. Therefore, the universal rotary milling fixture can adapt to the blade with different structure sizes and has convenient adjustment, good universality and low cost.
Description
(1) technical field
The present invention relates to the machining frock, be specially a kind of rotary milling fixture that is used for milling turbine blade profile.
(2) background technology
The turbine blade profile is a distortion profile, and blade profile processing utilizes three centre bores location usually, realizes blade profile revolution processing on Digit Control Machine Tool.Two kinds of methods are adopted in the blade profile digital control processing usually: the one, fixedly mill, and mill inner arc and back of the body arc respectively, production efficiency is low; The 2nd, revolution is milled, and adopts special-purpose rotary milling fixture, can realize the processing of convex profile in the blade simultaneously, the production efficiency height.
As Fig. 1～shown in Figure 3, be a kind of structure of existing special-purpose rotary milling fixture.It comprises base plate 1, cushion block 8 and cover plate 2, is equipped with two top 3, two top 3 on the cover plate 2 and is installed on the gripper shoe 6, and gripper shoe 6 is connected on the intermediate plate 5 by special screw 4, and intermediate plate 5 is fixed between two cushion blocks 8.Top 3 positions along Y direction shown in Figure 2 drive gripper shoe 6 by special screw 4 and adjust, and gripper shoe 6 also can slightly be swung to adjust two top 3 relative positions in Y direction around special screw 4.
Because the shape size of blade varies, blade root end face two central hole locations are difference with the difference of blade construction size, so just requires the blade rotary milling fixture to locate top position, two centers and also changes thereupon.But two top 3 of above-mentioned rotary milling fixture is fixed at the relative position of Z-direction, can't adjust, the blade that this just causes a kind of every production will design the special-purpose rotary milling fixture of a cover, rotary milling fixture can not be general, and the preparatory period is long, cost is high.In addition, though two top 3 of above-mentioned rotary milling fixture can adjust relative position in Y direction,, adjustment amount is little on the one hand, adjustment is difficult; On the other hand, adopt special screw 4, the cost height.
(3) summary of the invention
At the problems referred to above, the invention provides a kind of universal rotary milling fixture of steam turbine blade, this rotary milling fixture is convenient to adjust applicable to the blade of various different structure sizes, and cost is low.
Its technical scheme is such: it comprises base plate, cover plate and top, slidable fit has intermediate and intermediate fixture on the described base plate, described cover plate has two, be equipped with on the every described cover plate one described top, slidable fit has described cover plate and cover board fixing device on the described intermediate, and the glide direction of described cover plate and the glide direction of described intermediate are arranged in a crossed manner.
Its further technical scheme is:
The glide direction quadrature of the glide direction of described cover plate and described intermediate is provided with; Described base plate is provided with the intermediate guide runner, and described intermediate is provided with the intermediate projection, and described intermediate projection is slidingly fitted in the described intermediate guide runner; Described intermediate is provided with the cover plate guide runner, and described cover plate is provided with the cover plate projection, and described cover plate projection is slidingly fitted in the described cover plate guide runner; Described intermediate fixture comprises intermediate location side plate, described base plate is provided with intermediate location side plate positioning tooth, described intermediate location side plate is provided with the profile of tooth that matches with described intermediate location side plate positioning tooth, described intermediate is located the intermediate dog screw that has been threaded on the side plate, and the afterbody of described intermediate dog screw is resisted against on the described intermediate; Described cover board fixing device comprises cover plate location side plate, described intermediate is provided with cover plate location side plate positioning tooth, described cover plate location side plate is provided with the profile of tooth that matches with described cover plate location side plate positioning tooth, described cover plate is located the cover plate positioning stud that has been threaded on the side plate, and the other end of described cover plate positioning stud runs through described cover plate and fixed by locking nut; Described cover board fixing device comprises cover plate location side plate, described intermediate is provided with cover plate location side plate positioning tooth, described cover plate location side plate is provided with the profile of tooth that matches with described cover plate location side plate positioning tooth, described cover plate is located the cover plate dog screw that has been threaded on the side plate, and the afterbody of described cover plate dog screw is resisted against on the described cover plate; Every described cover plate is furnished with the described cover board fixing device of two covers; Be provided with crossbeam in the described cover plate guide runner on the described intermediate, one side described crossbeam be provided with fulcrum ball, described fulcrum ball is resisted against the bottom of described cover plate guide runner, the another side of described crossbeam and described two top leaning; Two sidewalls of described cover plate guide runner are provided with corresponding groove, are equipped with the bolt that runs through described crossbeam in the described groove.
The present invention is with two top separately being arranged on the two cover plates, and cover plate can slide along intermediate, and intermediate can slide on base plate, thereby realize top in perpendicular any point location, make the present invention can adapt to the blade of various different structure sizes, easy to adjust, versatility is good, and cost is low; The present invention is on two top crossbeams that are resisted against in the cover plate guide runner that is arranged on intermediate, rotates by crossbeam and regulates two top relative positions, makes toply can adjust in the horizontal direction; The present invention adopts the positioning tooth structure to fix intermediate and cover plate, and is simple in structure, the location is reliable; The present invention can solve well blade profile revolution add the interior back of the body arc surplus that often occurs man-hour inhomogeneous, advance problems such as the inhomogeneous and leaf top of lagging edge surplus and blade root place profile surplus be inhomogeneous.
(4) description of drawings
Fig. 1 is the structural representation of existing special-purpose rotary milling fixture;
Fig. 2 is the left view of Fig. 1;
Fig. 3 is the A-A cutaway view among Fig. 1;
Fig. 4 is the structural representation of first kind of embodiment of the present invention;
Fig. 5 is the B-B cutaway view among Fig. 4;
Fig. 6 is the C-C cutaway view among Fig. 4;
Fig. 7 is the structural representation of second kind of embodiment of the present invention;
Fig. 8 is the D-D cutaway view among Fig. 7;
Fig. 9 is the E-E cutaway view among Fig. 7;
Figure 10 is the structural representation of the base plate among the present invention;
Figure 11 is the left view of Figure 10;
Figure 12 is the F-F cutaway view among Figure 10;
Figure 13 is the structural representation of the intermediate among the present invention;
Figure 14 is the vertical view of Figure 13;
Figure 15 is the G-G cutaway view among Figure 14;
Figure 16 adjusts the uneven coordinate schematic diagram of back of the body arc surplus in the blade for using the present invention;
Figure 17 advances the uneven coordinate schematic diagram of lagging edge surplus for using the present invention to adjust blade;
Figure 18 adjusts vane top and the uneven coordinate schematic diagram of blade root place's profile surplus for using the present invention.
(5) specific embodiment
The present invention is a kind of universal rotary milling fixture of steam turbine blade, and turbine blade refills after by clamping of the present invention and is fitted on the revolution processing of carrying out blade profile on the Digit Control Machine Tool.
As Fig. 4～Figure 6 shows that first kind of embodiment of the present invention, as Fig. 7～Figure 9 shows that second kind of embodiment of the present invention, the difference of two kinds of embodiment is the cover board fixing device difference.
As Fig. 4～shown in Figure 9, the present invention includes base plate 1, cover plate 2 and top 5, top 5 are contained in the lining 6, slidable fit has intermediate 4 and intermediate fixture on the base plate 1, cover plate 2 has two, be equipped with on the every cover plate 2 one top 5, slidable fit has cover plate 2 and cover board fixing device on the intermediate 4, the glide direction of the glide direction of cover plate 2 and intermediate 4 is arranged in a crossed manner, preferably quadrature setting.
Among the present invention, two opened in top 5 minutes be arranged on the two cover plates 2, and cover plate 2 can slide on X-direction along intermediate 4, can realize that top 5 do to adjust arbitrarily on X-axis, satisfy the adjustment of two top 5 centers and centre-to-centre spacing; Intermediate 4 can slide along Z-direction at base plate 1, can realize that top 5 do to adjust arbitrarily on the Z axle; By above-mentioned two kinds of adjustment, can realize top 5 in the XZ plane any point location, make the present invention can adapt to the blade of various different structure sizes, versatility is good, compares with existing special-purpose rotary milling fixture, cost is low.
As Figure 10～shown in Figure 12, base plate 1 is a circular plate type, and its middle part is provided with intermediate guide runner 11 along Z-direction, and intermediate guide runner 11 is a kind of T type groove structures.Be provided with intermediate location side plate positioning tooth 12 in the both sides of intermediate guide runner 11, intermediate location side plate positioning tooth 12 is positioned on the boss that exceeds base plate 1 plane.Both sides at intermediate location side plate positioning tooth 12 are respectively arranged with a T type groove 14.Article two, have through hole 37 on the outside base plate 1 of T type groove 14 and in two T type grooves 14, the effect of through hole 37 is that base plate 1 is installed on the workbench of lathe.Base plate 1 bottom center position has pin shaft hole 38, and bearing pin 30 is installed in the pin shaft hole 38, and bearing pin 30 plays the role of positioning when base plate 1 is installed.
As Figure 13～shown in Figure 15, the shape of intermediate 4 is cuboids, the bottom surface of intermediate 4 is provided with intermediate projection 32, and the both sides of intermediate projection 32 are provided with groove 33, and the degree of depth of groove 33 is greater than the height of the location of the intermediate on the base plate 1 side plate positioning tooth 12 boss.The top middle part of intermediate 4 is along X-direction, and promptly the length direction of intermediate 4 is provided with cover plate guide runner 19, and the cross section of cover plate guide runner 19 is rectangles of openings at one side.The bottom of cover plate guide runner 19 has through hole 39, and two sidewalls of cover plate guide runner 19 are provided with corresponding groove 31.Above the intermediate 4, promptly the upper surface of two of cover plate guide runner 19 sidewalls is provided with cover plate location side plate positioning tooth 21, and the middle part of cover plate location side plate positioning tooth 21 is along X-direction, and promptly the length direction of intermediate 4 has T type groove 20.
The concrete structure of slidable fit is as follows between intermediate 4 and the base plate 1:
As shown in Figure 6, the intermediate projection 32 of intermediate 4 is slidingly fitted in the intermediate guide runner 11 on the base plate 1, and the intermediate location side plate positioning tooth 12 on the base plate 1 is contained in the groove 33 of intermediate 4 bottom surfaces; Intermediate 4 is connected in the T type groove 14 on the base plate 1 by the screw 35 that passes cover plate guide runner 19 bottom through-holes 39, and by 34 lockings of T type piece.
The concrete structure of slidable fit is as follows between cover plate 2 and the intermediate 4:
As shown in Figure 6, the bottom surface of cover plate 2 is provided with cover plate projection 26, and cover plate projection 26 is slidingly fitted in the cover plate guide runner 19 on the intermediate 4.Cover plate 2 is assemblied in the T type groove 20 on the intermediate 4 by screw 16, and by 25 lockings of T type piece.
Intermediate fixture among the present invention, comprise intermediate location side plate 8, intermediate location side plate 8 is provided with the profile of tooth that matches with intermediate location side plate positioning tooth 12 on the base plate 1, intermediate dog screw 9 has been threaded on the side plate 8 of intermediate location, the afterbody of intermediate dog screw 9 is resisted against on the intermediate 4, be equipped with locking nut 7 on the intermediate dog screw 9, locking nut 7 can be locked at intermediate dog screw 9 on the side plate 8 of intermediate location.Intermediate 4 is fixed by two cover intermediate fixtures, and the intermediate location side plate 8 of every cover intermediate fixture is locked in the intermediate guide runner 11 on the base plate 1 by screw 10 and T type piece 24.
Cover board fixing device among the present invention has two kinds, and first kind of cover board fixing device is used among first kind of embodiment of the present invention of Fig. 4～shown in Figure 6, and every cover plate 2 is furnished with a cover cover board fixing device.It comprises cover plate location side plate 3, cover plate location side plate 3 is provided with the profile of tooth that matches with cover plate location side plate positioning tooth 21 on the intermediate 4, the cover plate positioning stud 17 that has been threaded on the side plate 3 of cover plate location, the other end of cover plate positioning stud 17 run through cover plate 2 and by locking nut 15 fixing and lockings.The advantage of first kind of cover board fixing device is the space that can save between the two cover plates.
Second kind of cover board fixing device is used among second kind of embodiment of the present invention of Fig. 7～shown in Figure 9, and every cover plate 2 is furnished with two cover cover board fixing devices.This cover board fixing device comprises cover plate location side plate 3, cover plate location side plate 3 is provided with the profile of tooth that matches with cover plate location side plate positioning tooth 21 on the intermediate 4, cover plate is located the cover plate dog screw 36 that has been threaded on the side plate 3, and the afterbody of cover plate dog screw 36 is resisted against on the cover plate 2.The advantage of this cover board fixing device is not need to process the through hole that is used to wear screw on the side plate 3 of cover plate location.
Cover plate in above-mentioned two kinds of cover board fixing devices location side plate 3 all is to be assemblied in the T type groove 20 on the intermediate 4 by screw 18, and by 29 lockings of T type piece.
Two top 5 adjustable on Y direction in order to make, be provided with crossbeam 27 in the cover plate guide runner 19 on intermediate 4, one side of crossbeam 27 is provided with fulcrum ball 28, and fulcrum ball 28 is resisted against the bottom of cover plate guide runner 19, and the another side of crossbeam 27 and two top 5 lean; Be equipped with the bolt 13 that runs through crossbeam 27 in the groove 31 on two sidewalls of cover plate guide runner 19, the afterbody of bolt 13 is equipped with spring washer 22 and nut 23.
According to lever principle, crossbeam 27 can be regulated two top 5 upper-lower position around fulcrum ball 28 rotations, reaches a dynamic balancing.Crossbeam 27 can rotate around bolt 13, according to top 5 positions, in the groove 31 of bolt 13 on intermediate 4, along with crossbeam 27 move left and right on X-direction is regulated fulcrum ball 28 to two top 5 centers, tighten fixing by nut 23, wherein spring washer 22 prevents that nut 23 is loosening, can crossbeam 27 be fixed on the intermediate 4 by bolt 13 and nut 23 like this, prevents that crossbeam 27 is in the course of the work along the X-direction move left and right.
As Figure 16～shown in Figure 180, the operation principle of the present invention and the course of work are as follows:
Add man-hour in the revolution of the profile of blade 40, in regular meeting occurs back of the body arc surplus inhomogeneous, advance that the lagging edge surplus is inhomogeneous, leaf top and blade root locate problems such as the profile surplus is inhomogeneous, the present invention all can be solved well.
1, interior back of the body arc surplus is inhomogeneous
As shown in figure 16, interior back of the body arc surplus is inhomogeneous, illustrates that axis of rotation X1, the X2 of blade 40 reality do not overlap with theoretical axis of rotation X, and inner arc or carry on the back arc partially partially.Move adjustment by intermediate 4 along the intermediate guide runner 11 on the base plate 1, can do to slide arbitrarily along the Z axle, according to detecting the data Δ, carry out the adjustment of top 5 positions of anchor clamps, the actual axis of rotation X1, the X2 that realize blade 40 processing overlap with theoretical axis of rotation X, thus convex profile surplus problem of non-uniform in can solving.
2, it is inhomogeneous to advance the lagging edge surplus
As shown in figure 17, it is inhomogeneous to advance the lagging edge surplus, illustrates that blade 40 actual axis of rotation Z1, Z2 do not overlap with theoretical axis of rotation Z, and leading edge or lagging edge partially partially.Adjust along moving in the cover plate guide runner 19 on the intermediate 4 by cover plate 2, can do to slide arbitrarily along X-axis, according to detecting the data Δ, carry out the adjustment of top 5 positions of anchor clamps, the actual axis of rotation Z1, the Z2 that realize blade 40 processing overlap with theoretical axis of rotation Z, thereby can solve into lagging edge surplus problem of non-uniform.
3, the leaf top is inhomogeneous with blade root place profile surplus
As shown in figure 18, the leaf top is inhomogeneous with blade root place profile surplus, and the actual axis of rotation Y1 of blade, Y2 do not overlap with theoretical axis of rotation Y, and the angle θ that tilts.Move adjustment by intermediate 4 along the intermediate guide runner 11 on the base plate 1, can do to slide arbitrarily along the Z axle, according to detecting data θ, carry out the adjustment of top 5 positions of anchor clamps, allow actual axis of rotation Y1, the Y2 of blade processing overlap, thereby can solve leaf top and blade root place profile surplus problem of non-uniform with theoretical axis of rotation Y.
Claims (6)
1. universal rotary milling fixture of steam turbine blade, comprise base plate, cover plate and top, it is characterized in that: slidable fit has intermediate and intermediate fixture on the described base plate, described cover plate has two, be equipped with on the every described cover plate one described top, slidable fit has described cover plate and cover board fixing device on the described intermediate, and the glide direction of described cover plate and the glide direction of described intermediate are arranged in a crossed manner; The glide direction quadrature of the glide direction of described cover plate and described intermediate is provided with; Described base plate is provided with the intermediate guide runner, and described intermediate is provided with the intermediate projection, and described intermediate projection is slidingly fitted in the described intermediate guide runner; Described intermediate is provided with the cover plate guide runner, and described cover plate is provided with the cover plate projection, and described cover plate projection is slidingly fitted in the described cover plate guide runner; Be provided with crossbeam in the described cover plate guide runner on the described intermediate, one side described crossbeam be provided with fulcrum ball, described fulcrum ball is resisted against the bottom of described cover plate guide runner, the another side of described crossbeam and described two top leaning.
2. a kind of universal rotary milling fixture of steam turbine blade according to claim 1, it is characterized in that: described intermediate fixture comprises intermediate location side plate, described base plate is provided with intermediate location side plate positioning tooth, described intermediate location side plate is provided with the profile of tooth that matches with described intermediate location side plate positioning tooth, described intermediate is located the intermediate dog screw that has been threaded on the side plate, and the afterbody of described intermediate dog screw is resisted against on the described intermediate.
3. a kind of universal rotary milling fixture of steam turbine blade according to claim 1, it is characterized in that: described cover board fixing device comprises cover plate location side plate, described intermediate is provided with cover plate location side plate positioning tooth, described cover plate location side plate is provided with the profile of tooth that matches with described cover plate location side plate positioning tooth, described cover plate is located the cover plate positioning stud that has been threaded on the side plate, and the other end of described cover plate positioning stud runs through described cover plate and fixed by locking nut.
4. a kind of universal rotary milling fixture of steam turbine blade according to claim 1, it is characterized in that: described cover board fixing device comprises cover plate location side plate, described intermediate is provided with cover plate location side plate positioning tooth, described cover plate location side plate is provided with the profile of tooth that matches with described cover plate location side plate positioning tooth, described cover plate is located the cover plate dog screw that has been threaded on the side plate, and the afterbody of described cover plate dog screw is resisted against on the described cover plate.
5. a kind of universal rotary milling fixture of steam turbine blade according to claim 4 is characterized in that: every described cover plate is furnished with the described cover board fixing device of two covers.
6. a kind of universal rotary milling fixture of steam turbine blade according to claim 1 is characterized in that: two sidewalls of described cover plate guide runner are provided with corresponding groove, are equipped with the bolt that runs through described crossbeam in the described groove.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100044463A CN101767288B (en) | 2010-01-15 | 2010-01-15 | Universal rotary milling fixture of steam turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100044463A CN101767288B (en) | 2010-01-15 | 2010-01-15 | Universal rotary milling fixture of steam turbine blade |
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| Publication Number | Publication Date |
|---|---|
| CN101767288A CN101767288A (en) | 2010-07-07 |
| CN101767288B true CN101767288B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2010100044463A Expired - Fee Related CN101767288B (en) | 2010-01-15 | 2010-01-15 | Universal rotary milling fixture of steam turbine blade |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097098A (en) * | 2014-07-07 | 2014-10-15 | 西安工业大学 | Multipoint positioning method for large curved-surface thin-walled workpieces |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102922313B (en) * | 2012-10-24 | 2015-03-25 | 无锡透平叶片有限公司 | Rotary milling fixture device for machining guide vane of air compressor |
| CN102975049B (en) * | 2012-11-30 | 2015-04-29 | 无锡透平叶片有限公司 | Double tip rotary mill clamp |
| CN105414572B (en) * | 2015-12-27 | 2017-11-07 | 无锡透平叶片有限公司 | The adjustable leaf top Finial device of Turbine with Long Blades |
| CN108927683A (en) * | 2018-08-31 | 2018-12-04 | 成都华晨鹏吉科技有限公司 | A kind of blade Double Tops quick clamping device |
| CN114473588B (en) * | 2022-02-22 | 2022-11-08 | 南京工程学院 | Crankshaft drilling method and special drilling machine tool |
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2010
- 2010-01-15 CN CN2010100044463A patent/CN101767288B/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104097098A (en) * | 2014-07-07 | 2014-10-15 | 西安工业大学 | Multipoint positioning method for large curved-surface thin-walled workpieces |
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| CN101767288A (en) | 2010-07-07 |
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