GB846279A - Improvements relating to turbine and compressor blades - Google Patents
Improvements relating to turbine and compressor bladesInfo
- Publication number
- GB846279A GB846279A GB3771756A GB3771756A GB846279A GB 846279 A GB846279 A GB 846279A GB 3771756 A GB3771756 A GB 3771756A GB 3771756 A GB3771756 A GB 3771756A GB 846279 A GB846279 A GB 846279A
- Authority
- GB
- United Kingdom
- Prior art keywords
- blade
- electrode
- passageways
- axis
- duct
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23H—WORKING OF METAL BY THE ACTION OF A HIGH CONCENTRATION OF ELECTRIC CURRENT ON A WORKPIECE USING AN ELECTRODE WHICH TAKES THE PLACE OF A TOOL; SUCH WORKING COMBINED WITH OTHER FORMS OF WORKING OF METAL
- B23H9/00—Machining specially adapted for treating particular metal objects or for obtaining special effects or results on metal objects
- B23H9/14—Making holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
- F05B—INDEXING SCHEME RELATING TO WIND, SPRING, WEIGHT, INERTIA OR LIKE MOTORS, TO MACHINES OR ENGINES FOR LIQUIDS COVERED BY SUBCLASSES F03B, F03D AND F03G
- F05B2220/00—Application
- F05B2220/30—Application in turbines
- F05B2220/302—Application in turbines in gas turbines
Landscapes
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
846,279. Making turbine and like blades; removing metal by electric erosion. ROLLSROYCE Ltd. Dec. 10, 1957 [Dec. 10, 1956], No. 37717/56. Classes 83 (2) and 83 (4). [Also in Group XXVI] In a turbine or compressor blade having a shank portion 12 lying between a root platform 11 and a root fixing portion 13, and a supply duct 19 in the shank portion for supplying a cooling or heating fluid to longitudinal passageways 15 in the blade portion 10, the supply duct 19 has its axis on a circular arc, Fig. 7, so as to communicate with all of the passageways and is formed by electric arc or spark erosion or by anodic action. The duct 19 may be of circular, elliptical or triangular crosssection and its axis may be perpendicular or inclined to the blade axis. The blade with its passageways may be produced by any of the methods disclosed in Specifications 744,984, 826,498 or 846,277. For forming the duct 19 the blade is clamped to a rotary table 71 mounted on balls 72 and driven by a variablespeed motor 77. A hollow copper electrode 80 of arcuate form is mounted by a screw 91 on a lever 81, 82 pivoted on a vertical support 73. During erosion the electrode is vibrated by a cam 84 driven by motor 85. An electrolytic bathing liquid such as sodium silicate is supplied by compressed-air from a tank 89 through pipe 88 to the hollow electrode. The blade is surrounded by a chamber 94 having a drain pipe 95, Fig. 8 (not shown). A direct current, or an alternating current superposed on a direct current is supplied to the electrode and blade through conductors 92, 93; the electrode is at positive potential.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3771756A GB846279A (en) | 1956-12-10 | 1956-12-10 | Improvements relating to turbine and compressor blades |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3771756A GB846279A (en) | 1956-12-10 | 1956-12-10 | Improvements relating to turbine and compressor blades |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB846279A true GB846279A (en) | 1960-08-31 |
Family
ID=10398527
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3771756A Expired GB846279A (en) | 1956-12-10 | 1956-12-10 | Improvements relating to turbine and compressor blades |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB846279A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1209806B (en) * | 1961-08-30 | 1966-01-27 | Rolls Royce | Blade for axial flow machines, especially gas turbines |
| US3801218A (en) * | 1971-08-26 | 1974-04-02 | Rolls Royce | Fluid flow blades |
| FR2587255A1 (en) * | 1985-09-13 | 1987-03-20 | Dupuy Francis | Process and device for external or internal machining of a toric surface by electroerosion |
| WO1987003522A1 (en) * | 1985-12-13 | 1987-06-18 | Ae Plc | Process for the formation of holes |
| US6092991A (en) * | 1998-03-05 | 2000-07-25 | Mitsubishi Heavy Industries, Ltd. | Gas turbine blade |
-
1956
- 1956-12-10 GB GB3771756A patent/GB846279A/en not_active Expired
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1209806B (en) * | 1961-08-30 | 1966-01-27 | Rolls Royce | Blade for axial flow machines, especially gas turbines |
| US3801218A (en) * | 1971-08-26 | 1974-04-02 | Rolls Royce | Fluid flow blades |
| FR2587255A1 (en) * | 1985-09-13 | 1987-03-20 | Dupuy Francis | Process and device for external or internal machining of a toric surface by electroerosion |
| WO1987003522A1 (en) * | 1985-12-13 | 1987-06-18 | Ae Plc | Process for the formation of holes |
| US4769118A (en) * | 1985-12-13 | 1988-09-06 | Ae Plc | Process for the curvilinear formation of holes |
| US6092991A (en) * | 1998-03-05 | 2000-07-25 | Mitsubishi Heavy Industries, Ltd. | Gas turbine blade |
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