CN202462040U - Clamp for machining high-pressure spray nozzle plate of industrial steam turbine - Google Patents
Clamp for machining high-pressure spray nozzle plate of industrial steam turbine Download PDFInfo
- Publication number
- CN202462040U CN202462040U CN2011205713401U CN201120571340U CN202462040U CN 202462040 U CN202462040 U CN 202462040U CN 2011205713401 U CN2011205713401 U CN 2011205713401U CN 201120571340 U CN201120571340 U CN 201120571340U CN 202462040 U CN202462040 U CN 202462040U
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- clamp body
- locating piece
- nozzle plate
- datum level
- clamp
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Abstract
The utility model discloses a clamp for machining a high-pressure spray nozzle plate of an industrial steam turbine. The clamp comprises a clamp body, a positioning block, a positioning pin, an intermediate press plate and a long press plate, wherein a semicircular bump is arranged at the bottom of the front side of the clamp body; an arc convex rib is arranged above the semicircular bump; a circular arc groove is formed between the semicircular bump and the arc convex rib; a rectangular processing window is arranged in the circular arc groove; the positioning block is arranged at the top of the clamp body; the back side of the upper-half part of the positioning block is an inclined plane as a first datum plane; a first pair of tool bores is formed in the first datum plane; the left lateral surface of the upper-half part of the positioning block is also an inclined plane as a second datum plane; a second pair of tool bores is formed in the second datum plane; the first datum plane is mutually perpendicular to the second datum plane; one end of the positioning pin penetrates through the positioning block and extends into the circular arc groove; and the intermediate press plate and the long press plate are uniformly distributed on the semicircular bump along the same circumference. According to the clamp disclosed by the utility model, the design is ingenious and the accurate processing for an inclined deep taper hole in a complex space of the spray nozzle plate can be realized, and thus the problem that the spray nozzle plate cannot be positioned or clamped on a boring machine is solved.
Description
Technical field
This invention relates to the field of turbine manufacturing and processing, in particular to a high-pressure steam turbine with Uoo industrial nozzle plate milling fixture.
Background technology
Industrial steam turbine work the time need be carried out the switching of source of the gas, does not have too big thermal shock when switching in order to guarantee nozzle place source of the gas, needs high pressure nozzle is designed to the nozzle of holing, so will process one group on the high pressure nozzle plate and be uniformly distributed with the jet pipe hole.This nozzle has bigger difference with common before nozzle; Common nozzle of steam turbine majority is that blade welded type or fabricated construction are formed gas channel; Usually with the blade processing moulding, form nozzle, the gas channel of composition requirement between the blade shaped line through welding or fit.Shown in Fig. 1 a and Fig. 1 b, the nozzle of this industrial steam turbine is an integrated nozzle, and six groups of nozzle bores evenly distribute along circumference and form six steam passages.Each group nozzle bore is made up of φ d1 straight hole and φ d2 conical bore; Be respectively in the nozzle plate both sides; The center line of conical bore becomes 15 ° of angles with the nozzle plate end face, straight hole (center of circle is on diameter of phi d1 ± 0.05) and conical bore (center of circle is on diameter of phi d2 ± 0.05) form at the line of the two hole circle hearts and be 90 ° of angles in the space on the section and communicate.The relative space position of nozzle bore requires very high; The intersection point of the intersection point of conical bore center line and nozzle plate one side end face and straight hole center line and nozzle plate opposite side end face is of a size of A; It is a bulk, not only depends on the position in each hole, also depends on the thickness B of nozzle plate.This nozzle bore be processed with three place's difficult points: 1, machined surface is the inclined-plane; 2, drill bit centering is difficult to realize; 3, the calibration in hole, six places.Because the locus in the hole of nozzle bore is complicated, the processing location difficulty, hole body is unmanageable deep taper hole, therefore is difficult to accomplish the processing of this part with existing conventional installation way.
Summary of the invention
The purpose of the utility model is exactly solve to adopt existing conventional installation way to be difficult to accomplish the problem of the processing tasks in said nozzle hole; Provide a kind of structure ingenious; The brill of good positioning effect mills uses anchor clamps, having accomplished the processing of nozzle, and can guarantee the quality of product fully.
The utility model comprises clamp body, locating piece, alignment pin, middle pressing plate and long pressing plate; The positive bottom of said clamp body is half round bump; The top of this projection is provided with the arc convex tendon, forms arc groove together between semicircle projection and the arc convex tendon, has the rectangle process window in the arc groove; Locating piece is installed in the top of clamp body, and its Lower Half embeds in the clamp body, and the back side of the locating piece first half is the inclined-plane; As first datum level; Have first pair of tool bore on this datum level, the left surface of the locating piece first half also is the inclined-plane, as second datum level; Have second pair of tool bore on this datum level, aforementioned first datum level is vertical each other with second datum level; One end of alignment pin passes locating piece and stretches in the arc groove; Middle pressing plate is installed on the semicircle projection through securing member with long pressing plate, and evenly distributes along same circumference.
The cross section of above-mentioned clamp body is L-shaped, and for the balance that keeps clamp body and the stability of intensification clamp body structure, its back side is provided with two the three triangle reinforcements that laterally arrange.
Above-mentioned locating piece is fixed on the clamp body top through reference column.
Add man-hour, nozzle plate is packed into behind the deep-slotted chip breaker, for the ease of the location of nozzle plate, is evenly equipped with the securing member that is threaded with it on the arc convex tendon of clamp body, thereby an end of this securing member passes the arc convex tendon and can stretch in the deep-slotted chip breaker nozzle plate propping up tightly.
The utility model deft design, with low cost, convenient processing and manufacture can be used repeatedly, can realize the oblique deep taper hole of nozzle plate complex space is accurately processed, and can't locate on boring machine thereby solve nozzle plate, problem that can't clamping.
Description of drawings
The nozzle plate structure sketch map that Fig. 1 a is to be processed.
Fig. 1 b is a nozzle plate air flue cutaway view for the D-D of Fig. 1 analyses and observe
Fig. 2 a is the structural representation of the utility model.
Fig. 2 b is the K-K cutaway view of Fig. 2 a.
Fig. 2 c is the vertical view of Fig. 2 a.
Among Fig. 2 a to Fig. 2 c, 1 is that square toes holding screw, 2 is that middle pressing plate, 3 is that long pressing plate, 4 is that double-screw bolt (M16), 5 is that packing ring, 6 is nut (M16), and 7 is locating piece; 8 is reference column; 9 is fastening screw, and 10 is clamp body, and 11 is 11 for screw (M10); 12 is process window, and 13 is the medial surface of arc groove; 14 for the inner headed face of circular groove, 15 for the clamp body baseplane, 16 for reinforcement, 17 for being used for first pair of tool bore in working nozzle φ d1 hole, 18 for be used for working nozzle φ d2 hole to tool bore, 21 for arc convex tendon, 22 is an arc groove, 23 is semicircle projection.
Fig. 3 a is the clamping processing sketch map when utilizing the utility model working nozzle plate d1, d2 hole
Fig. 3 b is the vertical view of Fig. 3 a
Among Fig. 3 a, the 3b, 19 is nozzle plate, and 20 is dowel hole on the nozzle plate, and D is first datum level, and E is second datum level.
The specific embodiment
Shown in Fig. 2 a to Fig. 2 c, the utility model mainly is made up of clamp body 10, locating piece 7, alignment pin 9, middle pressing plate 2 and long pressing plate 3.The cross section of said clamp body 10 is L-shaped, and its positive bottom is half round bump 23, and the top of this projection is provided with arc convex tendon 21, is evenly equipped with 4 securing member square head screws 1 on the arc convex tendon, and an end of every square head screw 1 all can stretch in the arc groove 22.Form arc groove 22 together between semicircle projection 23 and the arc convex tendon 21, the medial surface 13 of this arc groove 22 is perpendicular with the baseplane 15 of clamp body 10, also has rectangle process window 12 in the arc groove 22.The back side of clamp body 10 is provided with two triangle reinforcements 16 that laterally arrange; The Lower Half of locating piece 7 is installed in the top of clamp body 10 through reference column 8, and fixing by 4 screws 11 (M10).Locating piece 7 first halves are the inclined-plane as the back side of the first datum level E; The angle angle of itself and locating piece 7 center lines is confirmed according to the angle of nozzle passage; Present embodiment is 15 °, also has the first pair of tool bore 17 that is used for working nozzle φ d1 straight hole on the first datum level E.The left surface of locating piece 7 first halves also is the inclined-plane as the second datum level D; The angle angle of itself and locating piece 7 center lines is confirmed according to the angle of nozzle passage equally; Present embodiment is 75 °, also has the second pair of tool bore 18 that is used for working nozzle φ d2 conical bore on the second datum level D.The aforementioned first datum level E is vertical each other with the second datum level D.
Above-mentioned two positions to tool bore are confirmed according to the locus of nozzle bore; And according to tool bore being confirmed the milling-boring machine main spindle's; Can rapidly, accurately, repeatably find the point of penetration of cutter like this; Thereby realize high-precision processing, realize accuracy, repeatable processing the complex space deep taper hole.
One end of alignment pin 9 passes locating piece 7 and stretches in the arc groove; Middle pressing plate 2 is installed on the semicircle projection through the combination fasteners that double-screw bolt (M16) 4, packing ring 5, nut (M16) 6 constitute with long pressing plate 3; Long pressing plate 3 has four; The left and right sides of pressing plate 2 in the middle of being distributed in twos; And evenly distribute the length that is shorter in length than long pressing plate of middle pressing plate along same circumference with middle pressing plate 2.
Below in conjunction with Fig. 3 a to Fig. 3 b, the concise and to the point process that adopts the utility model processing high pressure nozzle plate nozzle of describing:
For guaranteeing the smooth processing of nozzle plate, at first to nozzle plate be handled as follows:
1) thickness B of nozzle plate thickening F (surplus), and to make gross thickness be (B+F) ± 0.01.The purpose of thickening is in order before boring beveled aperture, to mill a plane, to guarantee that drill bit vertically pierces in order to avoid drill bit is eccentric.
2) on the excircle of nozzle plate, do 6 dowel holes 20, to guarantee the intercept requirement of 6 nozzle bores.
2) circle is finish-machined to certain size in the nozzle plate, is used as the positioning reference when packing clamp body into.
Then; Nozzle plate 19 is put into the arc groove 22 of clamp body 10, is positioning reference plane with the inner headed face 14 of clamp body arc groove, makes the side plane (referring to Fig. 1 b) in medial surface 13 and the nozzle plate d1 hole of the arc groove location of fitting; Nozzle plate inner headed face after fine finishining and the inner headed face of arc groove 14 are fitted and are located; In dowel hole 20 on the alignment pin 9 insertion nozzle plate excircles, make the nozzle plate location, again through square toes holding screw 1, middle pressing plate 2, long pressing plate 3, double-screw bolt
The combination fasteners that 4 (M16), 5 packing rings 5, nut 6 (M16) are formed compresses.
After nozzle plate 19 clampings are good, the utility model is placed on the milling-boring machine workbench, clamps, rotate platen adjustment position through on 7 locating pieces to the tool bore tool setting, to processing the nozzle bore that constitutes by φ d1 straight hole and φ d2 conical bore behind the good cutter.Milling-boring machine main shaft and clamp body baseplane 15 highly remain constant, working nozzle hole under this state.After processing a pair of d1 and d2 hole; Unclamp pressing plate, nozzle plate is rotated in the arc groove of clamp body by interior circle accurately, and with nozzle plate position, alignment pin 9 location; Milling-boring machine main shaft and clamp body ground level 15 remain constant, process next nozzle bore once more at this state.Press that alignment pin 9 cooperates calibration on dowel hole 20 and the clamp body on the nozzle plate, process 6 pairs of nozzle bores respectively.(referring to Fig. 3 a, 3b)
Claims (4)
1. anchor clamps that are used for processing industry Steam Turbine High Pressure Nozzle plate; Comprise clamp body, locating piece, alignment pin, middle pressing plate and long pressing plate; The positive bottom of said clamp body is half round bump; The top of this projection is provided with the arc convex tendon, forms arc groove together between semicircle projection and the arc convex tendon, has the rectangle process window in the arc groove; Locating piece is installed in the top of clamp body, and its Lower Half embeds in the clamp body, and the first half back side of locating piece is the inclined-plane; As first datum level; Have first pair of tool bore on this datum level, the left surface of the locating piece first half also is the inclined-plane, as second datum level; Have second pair of tool bore on this datum level, aforementioned first datum level is vertical each other with second datum level; One end of alignment pin passes locating piece and stretches in the arc groove; Middle pressing plate is installed on the semicircle projection through securing member with long pressing plate, and evenly distributes along same circumference.
2. anchor clamps as claimed in claim 1 is characterized in that the cross section of clamp body is L-shaped, and its back side is provided with two triangle reinforcements that laterally arrange.
3. according to claim 1 or claim 2 anchor clamps is characterized in that being evenly equipped with the securing member that is threaded with it on the arc convex tendon of clamp body, and an end of this securing member passes the arc convex tendon and can stretch in the deep-slotted chip breaker.
4. according to claim 1 or claim 2 anchor clamps is characterized in that locating piece is fixed on the clamp body top through reference column.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205713401U CN202462040U (en) | 2011-12-30 | 2011-12-30 | Clamp for machining high-pressure spray nozzle plate of industrial steam turbine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011205713401U CN202462040U (en) | 2011-12-30 | 2011-12-30 | Clamp for machining high-pressure spray nozzle plate of industrial steam turbine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202462040U true CN202462040U (en) | 2012-10-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011205713401U Expired - Lifetime CN202462040U (en) | 2011-12-30 | 2011-12-30 | Clamp for machining high-pressure spray nozzle plate of industrial steam turbine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202462040U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990383A (en) * | 2012-11-16 | 2013-03-27 | 无锡麦铁精密机械制造有限公司 | Arc surface positioning tooling plate |
| CN103753216A (en) * | 2013-11-13 | 2014-04-30 | 安徽省宿州市龙华机械制造有限公司 | Processing tooling with respect to parting type winch friction plate |
| CN104476226A (en) * | 2014-11-13 | 2015-04-01 | 福建兵工装备有限公司 | Contour processing clamp for bending part |
| CN105834044A (en) * | 2016-04-29 | 2016-08-10 | 广州飞机维修工程有限公司 | Positioning tool and positioning method for color bar spraying of Boeing 737 type radome |
| CN109047807A (en) * | 2018-09-13 | 2018-12-21 | 沈阳透平机械股份有限公司 | Utilize the method in the stator blade hole of Boring machine processing casing |
| CN110076599A (en) * | 2019-06-10 | 2019-08-02 | 上海第一机床厂有限公司 | Clamping fixer |
| CN114570991A (en) * | 2022-04-15 | 2022-06-03 | 山东省章丘鼓风机股份有限公司 | Auxiliary tool for machining key groove of ventilator impeller |
| CN114799454A (en) * | 2022-04-19 | 2022-07-29 | 中国航发动力股份有限公司 | Electron beam welding fixture for nozzle type non-axisymmetric parts and welding method thereof |
| CN115464356A (en) * | 2022-09-06 | 2022-12-13 | 安徽捷迅光电技术有限公司 | Automatic correction assembly tool for plastic nozzle plate |
-
2011
- 2011-12-30 CN CN2011205713401U patent/CN202462040U/en not_active Expired - Lifetime
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102990383B (en) * | 2012-11-16 | 2016-03-16 | 无锡麦铁精密机械制造有限公司 | A kind of cambered surface positioning board |
| CN102990383A (en) * | 2012-11-16 | 2013-03-27 | 无锡麦铁精密机械制造有限公司 | Arc surface positioning tooling plate |
| CN103753216A (en) * | 2013-11-13 | 2014-04-30 | 安徽省宿州市龙华机械制造有限公司 | Processing tooling with respect to parting type winch friction plate |
| CN103753216B (en) * | 2013-11-13 | 2016-08-31 | 安徽省宿州市龙华机械制造有限公司 | A set of processing tool about partition type winch friction plate |
| CN104476226B (en) * | 2014-11-13 | 2017-06-13 | 福建兵工装备有限公司 | The fixture of bent body class External Shape processing |
| CN104476226A (en) * | 2014-11-13 | 2015-04-01 | 福建兵工装备有限公司 | Contour processing clamp for bending part |
| CN105834044B (en) * | 2016-04-29 | 2019-03-26 | 广州飞机维修工程有限公司 | Boeing-737 type radome colour bar sprays positioning tool and localization method |
| CN105834044A (en) * | 2016-04-29 | 2016-08-10 | 广州飞机维修工程有限公司 | Positioning tool and positioning method for color bar spraying of Boeing 737 type radome |
| CN109047807A (en) * | 2018-09-13 | 2018-12-21 | 沈阳透平机械股份有限公司 | Utilize the method in the stator blade hole of Boring machine processing casing |
| CN109047807B (en) * | 2018-09-13 | 2019-07-12 | 沈阳透平机械股份有限公司 | Utilize the method in the stator blade hole of Boring machine processing casing |
| CN110076599A (en) * | 2019-06-10 | 2019-08-02 | 上海第一机床厂有限公司 | Clamping fixer |
| CN110076599B (en) * | 2019-06-10 | 2021-08-24 | 上海第一机床厂有限公司 | Clamping fixing device |
| CN114570991A (en) * | 2022-04-15 | 2022-06-03 | 山东省章丘鼓风机股份有限公司 | Auxiliary tool for machining key groove of ventilator impeller |
| CN114799454A (en) * | 2022-04-19 | 2022-07-29 | 中国航发动力股份有限公司 | Electron beam welding fixture for nozzle type non-axisymmetric parts and welding method thereof |
| CN114799454B (en) * | 2022-04-19 | 2023-11-03 | 中国航发动力股份有限公司 | Electron beam welding fixture for non-axisymmetric parts of nozzles and welding method thereof |
| CN115464356A (en) * | 2022-09-06 | 2022-12-13 | 安徽捷迅光电技术有限公司 | Automatic correction assembly tool for plastic nozzle plate |
| CN115464356B (en) * | 2022-09-06 | 2023-12-15 | 安徽捷迅光电技术有限公司 | Automatic correction assembly fixture for plastic nozzle plate |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20121003 |
|
| CX01 | Expiry of patent term |