CN101791765B - Universal hold-down mechanism of steam turbine blade drill jig - Google Patents
Universal hold-down mechanism of steam turbine blade drill jig Download PDFInfo
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- CN101791765B CN101791765B CN2010100044459A CN201010004445A CN101791765B CN 101791765 B CN101791765 B CN 101791765B CN 2010100044459 A CN2010100044459 A CN 2010100044459A CN 201010004445 A CN201010004445 A CN 201010004445A CN 101791765 B CN101791765 B CN 101791765B
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- drill jig
- slide block
- down mechanism
- cover plate
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Abstract
The invention relates to a universal hold-down mechanism of a steam turbine blade clamp, comprising a frame composed of an upper cover plate, a lower cover plate, a left cushion block and a right cushion block, wherein the upper cover plate and the lower cover plate are respectively provided with a corresponding slide way which is provided with a plurality of notches; a universal slide block is arranged between the upper cover plate and the lower cover plate; the upper side and the lower side of the universal slide block are respectively provided with a support shaft; the support shaft on the upper side of the universal slide block is installed in the slide way in the upper cover plate; the support shaft on the lower side of the universal slide block is installed in the slide way in the lower cover plate; the universal slide block is movably connected with a pressure lever of which the axial direction is crossed with the axial direction of the support shaft; and one end of the pressure lever is provided with a pressure head. The universal hold-down mechanism comprises the slide ways, the universal slide block, the pressure lever and the pressure head, has simple structure, strong generality, low using cost and convenient operation; a blade is pressed by the pressure head; the pressure head is connected with the universal slide block which slides in the slide ways, so that the universal hold-down mechanism is flexible to adjust and has high efficiency.
Description
(1) technical field
The present invention relates to the machining frock, be specially a kind of universal hold-down mechanism of steam turbine blade drill jig.
(2) background technology
The turbine blade profile is a distortion profile, and blade profile processing utilizes three centre bores location usually.Three centre bores are processing location benchmark, so processing request is higher, need to adopt the special jewel anchor clamps to guarantee.
Existing drill jig structure as shown in Figure 1 and Figure 2, its by about two root posts 1 form clamp body with two base plates 8 up and down; Be fixed with below the base plate 8 of clamp body top and bore plate 2, on bore be fixed with one on the plate 2 on top 4; Be fixed with down above the base plate 8 of clamp body below and bore plate 9, be fixed with two following top 10 on the following brill plate 9; Two root posts, 1 inboard is provided with key 3, and guiding side plate 6 can move up and down along key 3.
The boring clamping process of turbine blade is as follows: at first detect on special measuring tool by the dedicated test model, determine in the blade profile back of the body arc and to advance the lagging edge surplus even, accomplish fluently the sample dotting punch of three centre bores; Then, in that on top 4 and down top 10 the location on the drill jig, the checking surplus is even with three sample dotting punches of blade 7; After determining, install location-plate 5 on blade 7, cast sn-bi alloy 11 fixes blade 7 in location-plate 5; On drilling machine, bore three centre bores of blade 7 then; After three centre drills are good, adopt hammer to break sn-bi alloy 11 into pieces, the fragment of sn-bi alloy 11 is melted again, carry out the fixedly boring of next blade, so circulation.
Above-mentioned method by cast sn-bi alloy fixed blade on drill jig, though can guarantee the crudy of blade three centre bores, operation is trouble, efficient is low, cost is high.
(3) summary of the invention
At the problems referred to above, the invention provides a kind of universal hold-down mechanism of steam turbine blade drill jig, this hold-down mechanism is simple in structure, and is convenient to operation, the production efficiency height.
Its technical scheme is such: it comprises by upper cover plate, lower cover, the framework that left side cushion block and right cushion block are formed, be respectively arranged with corresponding chute on described upper cover plate and the described lower cover, described chute is provided with a plurality of recesses, between described upper cover plate and described lower cover, be provided with universal slide block, the both sides up and down of described universal slide block are respectively arranged with back shaft, the back shaft of described universal slide block upside is installed in the chute of described upper cover plate, the back shaft of described universal slide block downside is installed in the chute of described lower cover, be connected with depression bar on the described universal slide block, axially axially arranged in a crossed manner with described back shaft of described depression bar, an end of described depression bar is provided with pressure head.
Its further technical scheme is:
Described depression bar is threaded with described universal slide block, and described depression bar is provided with clamp nut; Described pressure head is movably connected on the described depression bar; Described pressure head is provided with briquetting; Described briquetting is divided into back of the body arc voltage piece and inner arc briquetting; The material of described briquetting is a sn-bi alloy; One side of described framework is provided with hinge; The opposite side of described framework is provided with opening and closing structure; Described opening and closing structure comprises that handwheel, hand wheel pole reach and the hinged connecting plate of described hand wheel pole, and described hand wheel pole is arranged in the groove of described left cushion block or described right cushion block; Described back shaft is the bolt that is threaded on the described universal slide block.
The present invention includes chute, universal slide block, depression bar and pressure head, simple in structure, highly versatile, use cost are low, compress blade by pressure head, easy to operate, pressure head is connected with universal slide block by depression bar, universal slide block slides in chute, and adjusting is flexible, efficient is high; Pressure head is movably connected on the depression bar, and pressure head can rotate, and does a fine setting, and pressure head is compressed reliably; Pressure head is provided with briquetting, can be used to protect the profile of blade, by manufacturing different briquettings, can make the different profiles of briquetting applying blade, has increased versatility of the present invention; The present invention is installed on the drill jig by hinge and opening and closing structure, convenient disassembly.
(4) description of drawings
Fig. 1 is the structural representation of existing steam turbine blade drill jig;
Fig. 2 is the A-A cutaway view among Fig. 1;
Fig. 3 is a structural representation of the present invention;
Fig. 4 is the B-B cutaway view among Fig. 3.
(5) specific embodiment
As shown in Figure 3, Figure 4, the present invention is a kind of universal hold-down mechanism that being used on the general steam turbine blade drill jig compresses blade that is installed in.It comprises the framework of being made up of by screw 5 upper cover plate 2, lower cover 6, left cushion block 15 and right cushion block 4.Be respectively arranged with corresponding chute 21 on upper cover plate 2 and the lower cover 6, chute 21 is provided with a plurality of recesses 22.Be provided with universal slide block 10 between upper cover plate 2 and lower cover 6, the both sides up and down of universal slide block 10 are respectively arranged with back shaft 8.The back shaft 8 of universal slide block 10 upsides is installed in the chute 21 of upper cover plate 2, and the back shaft 8 of universal slide block 10 downsides is installed in the chute 21 of lower cover 6, and the back shaft 8 of universal slide block 10 can slide along chute 21, and can be positioned on recess 22 places.Be connected with depression bar 11 on the universal slide block 10, depression bar 11 axially and back shaft 8 axially arranged in a crossed manner, preferably quadrature is arranged in a crossed manner, an end of depression bar 11 is provided with pressure head 12.The present invention is fixed blade 7 by mechanical mechanism, and is simple in structure, and highly versatile, use cost are low; Compress blade 7 by pressure head 12, easy to operate; Pressure head 12 is connected with universal slide block 10 by depression bar 11, and universal slide block 10 slides in chute 21, and adjusting is flexible, efficient is high.
In order to protect the profile of blade 7, on pressure head 12, can also be provided with briquetting 16,17, briquetting 16,17 adopts housing screw 23 to be fixed. Briquetting 16,17 manufactures according to the corresponding profile of blade 7, is divided into back of the body arc voltage piece 16 and inner arc briquetting 17.The material of briquetting 16,17 adopts low-melting alloy, is preferably sn-bi alloy.
The present invention is installed on the column 1 of general steam turbine blade drill jig.One side of framework of the present invention is the right side in the present embodiment, is provided with hinge 3, and hinge 3 is installed on column 1 and the right cushion block 4 by screw 18.At the opposite side of framework, in the present embodiment left side, be provided with opening and closing structure.Opening and closing structure comprises handwheel 13, hand wheel pole 14 and the connecting plate 20 hinged with hand wheel pole 14, and connecting plate 20 is installed on the column 1 by screw, and hand wheel pole 14 is arranged in the groove of left cushion block 15.Certainly, the present invention also can be arranged on hinge 3 left side, and opening and closing structure is arranged on the right side, and correspondingly right cushion block 4 is provided with the groove that holds hand wheel pole 14.The present invention is installed on the drill jig convenient disassembly by hinge 3 and opening and closing structure.
Among the present invention, the back shaft 8 of universal slide block 10 can be and universal slide block 10 integrative-structures, also can be the branch body structure.For example, back shaft 8 can adopt the bolt that is threaded on the universal slide block 10, particularly can adopt hexagon flange bolt, and locks with slim nut 9.
During use, the present invention's one well matched two universal slide blocks 10 correspondingly have 2 pressure heads 12; Compressing a blade 7 generally needs to be equipped with 4 the present invention, and wherein, 2 the present invention are used to compress the convex profile of blade 7, other 2 interior arc shaped surfaces that are used to compress blade 7.
The course of work of the present invention is as follows: blade 7 is positioned on the acorde bur anchor clamps according to the sample dotting punch of accomplishing fluently in advance, after special-purpose model checking, the universal hold-down mechanism of back of the body arc in the blade 7 is shut around hinge 3 rotations, be pressed abd fixed on by handwheel 13 on the column 1 of drill jig; Universal slide block 10 is moved along the chute 21 on upper cover plate 2 and the lower cover 6, move to the recess 22 of appropriate location, depression bar 11 is adjusted to the normal direction of blade 7, so that compress blade 7 in normal direction; Pressure head 12 around bearing pin 19 rotation, is done a fine setting, make fit the fully corresponding profile of blade 7 of back of the body arc voltage piece 16 and inner arc briquetting 17; After adjust the position,, blade 7 is fixed by regulating the clamp nut 20 on the depression bar 11; After three centre drills of blade 7 are good, unclamp the handwheel 13 of the universal hold-down mechanism on the arc shaped surface in the blade 7, open inner arc two universal hold-down mechanisms up and down, take out blade 7, adopt identical method again, next blade 7 is installed, blade 7 is fixing, the machining center hole.
Claims (7)
1. the universal hold-down mechanism of a steam turbine blade drill jig, it is characterized in that: it comprises by upper cover plate, lower cover, the framework that left side cushion block and right cushion block are formed, be respectively arranged with corresponding chute on described upper cover plate and the described lower cover, described chute is provided with a plurality of recesses, between described upper cover plate and described lower cover, be arranged to each two of rare up and down both sides totally four universal slide blocks, the described universal slide block of both sides up and down is respectively arranged with back shaft, the universal slider support axle of described upside is installed in the chute of described upper cover plate, the universal slider support axle of described downside is installed in the chute of described lower cover, be connected with depression bar on the described universal slide block, axially axially arranged in a crossed manner with described back shaft of described depression bar, an end of described depression bar is provided with pressure head; One side of described framework is provided with hinge, and described hinge is installed on the column and described right cushion block or described left cushion block of drill jig by screw; The opposite side of described framework is provided with opening and closing structure; Described opening and closing structure comprises that handwheel, hand wheel pole reach and the hinged connecting plate of described hand wheel pole, and described connecting plate is installed in by screw on the column of drill jig, and described hand wheel pole is arranged in the groove of described left cushion block or described right cushion block.
2. the universal hold-down mechanism of a kind of steam turbine blade drill jig according to claim 1, it is characterized in that: described depression bar is threaded with described universal slide block, and described depression bar is provided with clamp nut.
3. the universal hold-down mechanism of a kind of steam turbine blade drill jig according to claim 1 and 2, it is characterized in that: described pressure head is movably connected on the described depression bar.
4. the universal hold-down mechanism of a kind of steam turbine blade drill jig according to claim 3, it is characterized in that: described pressure head is provided with briquetting.
5. the universal hold-down mechanism of a kind of steam turbine blade drill jig according to claim 4 is characterized in that: described briquetting is divided into back of the body arc voltage piece and inner arc briquetting.
6. the universal hold-down mechanism of a kind of steam turbine blade drill jig according to claim 4, it is characterized in that: the material of described briquetting is a sn-bi alloy.
7. the universal hold-down mechanism of a kind of steam turbine blade drill jig according to claim 1, it is characterized in that: described back shaft is the bolt that is threaded on the described universal slide block.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100044459A CN101791765B (en) | 2010-01-15 | 2010-01-15 | Universal hold-down mechanism of steam turbine blade drill jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010100044459A CN101791765B (en) | 2010-01-15 | 2010-01-15 | Universal hold-down mechanism of steam turbine blade drill jig |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101791765A CN101791765A (en) | 2010-08-04 |
| CN101791765B true CN101791765B (en) | 2011-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010100044459A Expired - Fee Related CN101791765B (en) | 2010-01-15 | 2010-01-15 | Universal hold-down mechanism of steam turbine blade drill jig |
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| CN (1) | CN101791765B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102873362A (en) * | 2012-09-21 | 2013-01-16 | 西安陕鼓动力股份有限公司 | Horizontal type punching method and horizontal-type punching tool for datum holes of blade die forged blank |
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| CN102147245B (en) * | 2010-11-20 | 2013-01-23 | 无锡透平叶片有限公司 | Novel clamping tool used for three-coordinate detection of static blade profile |
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| CN103350213B (en) * | 2013-07-04 | 2016-09-07 | 常州市三维技术成套设备有限公司 | Low-melting alloy casting positioning process in turbine Blade Machining |
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| CN105522420B (en) * | 2016-01-21 | 2017-12-29 | 南京理工大学 | A kind of flexible fixture of the complex-curved positioning and clamping of suitable part |
| US10013752B2 (en) | 2016-11-18 | 2018-07-03 | General Electric Company | Virtual blade inspection |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102873362A (en) * | 2012-09-21 | 2013-01-16 | 西安陕鼓动力股份有限公司 | Horizontal type punching method and horizontal-type punching tool for datum holes of blade die forged blank |
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| Publication number | Publication date |
|---|---|
| CN101791765A (en) | 2010-08-04 |
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