CN205111323U - A anchor clamps that is used for turbine guide blade toper air film spot facing work - Google Patents
A anchor clamps that is used for turbine guide blade toper air film spot facing work Download PDFInfo
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- CN205111323U CN205111323U CN201520780493.5U CN201520780493U CN205111323U CN 205111323 U CN205111323 U CN 205111323U CN 201520780493 U CN201520780493 U CN 201520780493U CN 205111323 U CN205111323 U CN 205111323U
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- film hole
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Abstract
The utility model provides an anchor clamps that is used for turbine guide blade toper air film spot facing work, including the bottom plate and install 6 positioning mechanism on the bottom plate, hold -down mechanism on and down, 6 positioning mechanism are installed by two bulb locating pins, two locating pins and two long column locating pins respectively and constitute on the bottom plate, hold -down mechanism includes double -end screw, lower holding screw, lower sleeve and holding down plate down, the double -end fix with screw was on the bottom plate under holding screw passed through down, lower sleeve and holding down plate be suit under on the holding screw respectively, upward hold -down mechanism includes the double -end screw, upward holding screw, top board reach and go up the sleeve, go up holding screw through last double -end fix with screw on the bottom plate, the top board reaches goes up sleeve difference suit on last holding screw. The utility model provides a processing technology difficult problem in high -pressure turbine guide blade blade, installation version toper air film hole, improved production efficiency greatly, guarantee the product and deliver on schedule.
Description
Technical field
The utility model relates to a kind of fixture for the processing of turborotor taper air film hole, belongs to precision processing technology field.
Background technology
Certain h type engine h high-pressure turbine guide vane has two conjuncted and triplet two kinds of structures, by large installing plate, blade, little installing plate composition.This blade belongs to the complicated air cooling hollow blade of precision-investment casting equiax crystal, the blade of three high-pressure turbine guide vanes and installing plate are all processed with several air film holes, wherein air film hole needs to be processed into taper air film hole and cylindrical air film hole, and machining accuracy is higher, wherein on blade, the aperture of air film hole is
on installing plate, the aperture of air film hole is
According to design drawing require high-pressure turbine guide vane blade basin to, dorsad with large and small installing plate pipes' analysis processing taper air film hole, as shown in Figure 1 to Figure 3, the procedure of this air film hole is: first process cylindrical micropore 19, then taper air film hole 21 is processed in blade pipes' analysis 20 side of cylindrical micropore 19, wherein the tapering of taper air film hole 21 is 20 °.
This blade in process of production, because the difficulty of processing taper air film hole is large especially, and there is no referential correlation experience, cause blade processing to carry out, damp production, can not ensure that product is paid on schedule, simultaneously part adds and is not easy to location man-hour, be difficult to the crudy ensureing product, product qualified rate is lower, causes huge economic loss to company.
Utility model content
For solving the problem, the utility model provides a kind of fixture for the processing of turborotor taper air film hole.Thus solve the process technology bottleneck of high-pressure turbine guide vane blade, installing plate taper air film hole, improve working (machining) efficiency, guarantee that blade is paid on time.
The utility model is achieved by following technical solution.
For a fixture for turborotor taper air film hole processing, comprise base plate and be arranged on six point location mechanisms on base plate, lower hold-down mechanism and upper hold-down mechanism; Described six point location mechanisms are arranged on base plate by two bulb alignment pins, two alignment pins and two long column alignment pins respectively and form; Described lower hold-down mechanism comprises lower dowel screw, lower holding screw, lower sleeve and lower platen, and described lower holding screw is fixed on base plate by lower dowel screw, and described lower sleeve and lower platen are set on lower holding screw; Described upper hold-down mechanism comprises dowel screw, upper holding screw, top board and upper bush, and described upper holding screw is fixed on base plate by upper dowel screw, and described top board and upper bush are set on holding screw.
Described lower holding screw is also set with lower spring, and lower spring is positioned at inside lower platen.
Described lower holding screw has also been threaded connection lower wing nut.
Described upper holding screw is also set with spring, and upper spring is positioned at inside top board.
Described upper holding screw has also been threaded connection wing nut.
The beneficial effects of the utility model are:
Adopt clamp for machining described in the utility model, accurately can locate part, reduce the difficulty of processing of taper air film hole, thus solve a process technology difficult problem for high-pressure turbine guide vane blade, installation version taper air film hole, the carrying out that effective guarantee blade processing is produced, substantially increase production efficiency, ensure that product is paid on schedule, improve product qualified rate simultaneously; Fill up the blank of China's this technology of aeroturbine blade capillary processing industry.
Accompanying drawing explanation
Fig. 1 is blade profile schematic diagram to be processed;
Fig. 2 is A place air film hole enlarged diagram in Fig. 1;
Fig. 3 is B place air film hole enlarged diagram in Fig. 1;
Fig. 4 is the structural representation of tapered electrode;
Fig. 5 is structural representation of the present utility model;
Fig. 6 is the top view of Fig. 5;
Fig. 7 is the schematic diagram adopting fixture described in the utility model processing taper air film hole;
Fig. 8 is the close-up schematic view of taper air film hole processing.
In figure: 1-base plate, 2-bulb alignment pin, 3-alignment pin, 4-lower sleeve, 5. lower platen, 6-top board, 7-upper bush, 8-long column alignment pin, holding screw under 9-, dowel screw under 10-, 11-lower spring, wing nut under 12-, the upper dowel screw of 13-, the upper spring of 14-, the upper holding screw of 15-, the upper wing nut of 16-, 17-active section, 18-gripping section, the cylindrical micropore of 19-, 20-blade pipes' analysis, 21-taper air film hole, 171-conical section, 172-cylindrical section.
Detailed description of the invention
The technical solution of the utility model is further described below in conjunction with accompanying drawing, but described in claimed scope is not limited to.
As shown in Figure 5, Figure 6, a kind of fixture for the processing of turborotor taper air film hole described in the utility model, fixture comprises base plate 1 and is arranged on six point location mechanisms on base plate 1, lower hold-down mechanism and upper hold-down mechanism, and described six point location mechanisms are arranged on base plate 1 by two bulb alignment pins, 2, two alignment pins 3 and two long column alignment pins 8 respectively and form; Described lower hold-down mechanism comprises lower dowel screw 10, lower holding screw 9, lower spring 11, lower sleeve 4, lower platen 5 and lower wing nut 12, described lower holding screw 9 is fixed on base plate 1 by dowel screw 10, described lower spring 11, lower sleeve 4 and lower platen 5 are set on lower holding screw 9, and described lower wing nut 12 is threaded connection with lower holding screw 9; Described upper hold-down mechanism comprises dowel screw 13, upper holding screw 15, upper spring 14, top board 6, upper bush 7 and upper wing nut 16, described upper holding screw 15 is fixed on base plate 1 by upper dowel screw 13, described upper spring 14, top board 6 and upper bush 7 are set on holding screw 15, and described upper wing nut 16 is threaded connection with upper holding screw 15; Described six point positioning systems, upper pressing system and lower pressing system constitute complete fixture.Adopt clamp for machining described in the utility model, accurately can locate part, reduce the difficulty of processing of taper air film hole, thus solve a process technology difficult problem for high-pressure turbine guide vane blade, installation version taper air film hole, the carrying out that effective guarantee blade processing is produced, substantially increase production efficiency, ensure that product is paid on schedule, improve product qualified rate simultaneously.
Below in conjunction with accompanying drawing, employing the utility model is described in detail as follows the method that taper air film hole is processed:
As shown in Fig. 4 to Fig. 8, a kind of method step adopting above-mentioned fixture to process turborotor taper air film hole is as follows:
(1) Choice and process mode: according to the feature of various processing mode and the contour structures of blade, repeatedly tries processing checking by analysis and scene, gets rid of grinding, spark machined and drilling processing mode, chooses electric pulse processing taper air film hole.
(2) Design and manufacture electrode: according to the contour structures feature of electric pulse equipment and blade, the tapered electrode of design not only will ensure size and the requirement of bellmouth, and electrode and blade also will be avoided to interfere; Repeatedly try the performance of processing and data by scene, constantly more conversion materials, improve the profile of tapered electrode and size, through many experiments, finally determine copper-tungsten material, and be processed into required tapered electrode; As shown in Figure 4, this tapered electrode comprises gripping section 18 and active section 17, and described active section 17 is made up of conical section 171 and cylindrical section 172, and wherein the tapering of conical section 171 is 20 °.The manufacture difficulty of this electrode is very large, uses standard high, should ensure the precision of capillary processing size, surface roughness, also will ensure working (machining) efficiency; The depletion rate of electrode wants slow, reusable simultaneously, and repair rate is low.Consider above factor, the manufacture method step of this tapered electrode is as follows:
A, blanking: choose copper-tungsten or red copper bar is processed as the material of electrode, its blank size is Φ 10 × 100;
B, brill center hole: bar clamping on the chuck of numerically controlled lathe, den bohrkopf einsetzen, bores center hole at the two ends of bar;
C, car cylinder: mobile addendum cone, make the center hole that bores in its alignment procedures b and clamp, clamping lathe tool, the face of cylinder of Vehicle Processing conical section 17;
D, taper turning: change 90 degree of carbide alloy offset tools, remove addendum cone, the conical surface that edit routine Vehicle Processing is 20 °, conical surface roughness 3.2 must be ensured;
(3) manufacture and design fixture: according to the requirement of equipment, foliar characteristics and tapered micro holes, design and produce the novel described fixture of this use;
(4) cylindrical capillary processing:
Determined the hole site in first hole and last hole by part three-dimensional modeling three-coordinate measuring machine-tool, then with multiaxis spark-erosion machine tool, electrode is adjusted to the angle in corresponding hole, program, processing diameter is the cylindrical micropore of 0.8mm and 0.55mm;
(5) parts fixation:
As shown in Figure 7, with six point positioning systems of fixture, part is positioned on fixture, with pressing system and lower pressing system, part is being pressed abd fixed on fixture, whether is fitting tightly with clearance gauge inspection six point location points of 0.02mm, then need to reorientate clamping if any gap;
(6) clamping electrode and centering:
As shown in Figure 7, Figure 8, tapered electrode clamping is passed through screw lock on terminal clamp, again terminal clamp clamping on electric pulse lathe, be contained on general-purpose dial framework with dial gauge, dial framework is adsorbed on lathe, beat table detecting electrode perpendicularity from top to bottom, regulated 3 rotary freedoms of electrode by the electrode turn-knob regulating system on adjustment lathe, require that dial gauge reading must not more than 0.05mm within the scope of electrode length from top to bottom;
(7) taper air film hole processing:
The position in first hole and last hole is determined, by equal point-score machining programming, with clamping tapered electrode processing taper air film hole with the cylindrical micropore machined in above-mentioned steps (4); Collect data by experiment, carry out statistical analysis, continue to optimize parameter, find out best electric pulse machined parameters.
Major parameter is as follows:
Pipe number: 6 ~ 10;
Pulsewidth (μ s): 15 ~ 20;
Rest (μ s): 10 ~ 20;
Servo (%): 50 ~ 60;
Working depth: 4.2 ~ 4.8mm; Preferentially finely tune to 4.5mm in reality processing.
(8) tapered electrode is repaired:
By the electrode clamping of loss after processing on the chuck of numerically controlled lathe, edit routine, with the conical surface of 90 degree of carbide alloy offset tools Vehicle Processing 20 °, ensure conical surface roughness 3.2.Electrodes finish is become to meet the size of design drawing requirement, electrode can be reused, greatly reduce costs.
According to the various equipment processing feature of air film hole and the contour structures of blade, choose electric pulse processing taper air film hole.After selection of equipment, design and manufacture tapered electrode and fixture.Add man-hour, first complete cylindrical capillary processing by multiaxis spark-erosion machine tool, then by blade positioning and clamping on fixture, again tapered electrode is installed to after on terminal clamp, the position of continuous adjustment tapered electrode, until the center line of tapered electrode overlaps with the center line of cylindrical micropore, after namely the position of taper air film hole is found accurately, start to process taper air film hole.Taper air film hole process as shown in Figure 7, Figure 8.In the process of tapered electrode processing taper air film hole, conical section constantly discharges and is consumed, and in order to reduce the manufacturing cost of tapered electrode, turning means can be adopted to repair the conical section consumed, until the length dimension of tapered electrode can not be repaiied.
Above-mentioned blade in process of production, the difficulty of processing taper air film hole is large especially, and there is no referential correlation experience, therefore before this process technology is not found out, the taper air film hole met design requirement cannot be processed, cause blade processing to carry out, damp production, payment node delays again and again, and causes huge economic loss to company; By a large amount of argument and analysis and test, find out the processing technology of bellmouth described in the utility model, thus solve a process technology difficult problem for this high-pressure turbine guide vane blade, installation version taper air film hole, guarantee that blade is paid on time, for company creates new growth engines, filled up the blank of China's this technology of aeroturbine blade capillary processing industry simultaneously.
Claims (5)
1., for a fixture for turborotor taper air film hole processing, it is characterized in that: comprise base plate (1) and be arranged on six point location mechanisms on base plate (1), lower hold-down mechanism and upper hold-down mechanism; Described six point location mechanisms are arranged on base plate (1) by two bulb alignment pins (2), two alignment pins (3) and two long column alignment pins (8) respectively and form; Described lower hold-down mechanism comprises lower dowel screw (10), lower holding screw (9), lower sleeve (4) and lower platen (5), described lower holding screw (9) is fixed on base plate (1) by dowel screw (10), and described lower sleeve (4) and lower platen (5) are set on lower holding screw (9); Described upper hold-down mechanism comprises dowel screw (13), upper holding screw (15), top board (6) and upper bush (7), described upper holding screw (15) is fixed on base plate (1) by upper dowel screw (13), and described top board (6) and upper bush (7) are set on holding screw (15).
2. a kind of fixture for the processing of turborotor taper air film hole according to claim 1, it is characterized in that: described lower holding screw (9) is also set with lower spring (11), and lower spring (11) is positioned at lower platen (5) inner side.
3. a kind of fixture for the processing of turborotor taper air film hole according to claim 1, is characterized in that: described lower holding screw (9) has also been threaded connection lower wing nut (12).
4. a kind of fixture for the processing of turborotor taper air film hole according to claim 1, it is characterized in that: described upper holding screw (15) is also set with spring (14), and upper spring (14) is positioned at top board (6) inner side.
5. a kind of fixture for the processing of turborotor taper air film hole according to claim 1, is characterized in that: described upper holding screw (15) has also been threaded connection wing nut (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780493.5U CN205111323U (en) | 2015-10-10 | 2015-10-10 | A anchor clamps that is used for turbine guide blade toper air film spot facing work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520780493.5U CN205111323U (en) | 2015-10-10 | 2015-10-10 | A anchor clamps that is used for turbine guide blade toper air film spot facing work |
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| CN205111323U true CN205111323U (en) | 2016-03-30 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247893A (en) * | 2016-08-25 | 2016-12-21 | 中航动力股份有限公司 | A kind of string width measuring tool of high-pressure turbine guide vane |
| CN108818089A (en) * | 2018-07-20 | 2018-11-16 | 河南科技大学 | A kind of two sides hole workpiece positioning fixture |
| CN111390582A (en) * | 2020-03-31 | 2020-07-10 | 中国航发动力股份有限公司 | Device for enhancing cooling effect of blade |
| CN111485956A (en) * | 2020-04-24 | 2020-08-04 | 中国航发湖南动力机械研究所 | Turbine guide cooling blade |
| CN114985852A (en) * | 2022-06-30 | 2022-09-02 | 贵州安吉华元科技发展有限公司 | Machining method for special-shaped air film hole of aircraft engine blade |
-
2015
- 2015-10-10 CN CN201520780493.5U patent/CN205111323U/en active Active
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106247893A (en) * | 2016-08-25 | 2016-12-21 | 中航动力股份有限公司 | A kind of string width measuring tool of high-pressure turbine guide vane |
| CN106247893B (en) * | 2016-08-25 | 2019-04-02 | 中航动力股份有限公司 | A kind of chord width measuring tool of guide vane of high pressure turbine |
| CN108818089A (en) * | 2018-07-20 | 2018-11-16 | 河南科技大学 | A kind of two sides hole workpiece positioning fixture |
| CN111390582A (en) * | 2020-03-31 | 2020-07-10 | 中国航发动力股份有限公司 | Device for enhancing cooling effect of blade |
| CN111390582B (en) * | 2020-03-31 | 2021-06-22 | 中国航发动力股份有限公司 | Device for enhancing cooling effect of blade |
| CN111485956A (en) * | 2020-04-24 | 2020-08-04 | 中国航发湖南动力机械研究所 | Turbine guide cooling blade |
| CN114985852A (en) * | 2022-06-30 | 2022-09-02 | 贵州安吉华元科技发展有限公司 | Machining method for special-shaped air film hole of aircraft engine blade |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 550000 Shawen Ecological Science and Technology Industrial Park, Baiyun District, Guiyang City, Guizhou Province Patentee after: Guiyang Hangfa Precision Casting Co., Ltd. Address before: 550014 Shawen Ecological Science and Technology Industrial Park, Baiyun District, Guiyang City, Guizhou Province Patentee before: GUIYANG AVIC POWER PRECISION CASTING CO., LTD. |