SU872219A1 - Method of grinding the faces of parts - Google Patents
Method of grinding the faces of parts Download PDFInfo
- Publication number
- SU872219A1 SU872219A1 SU782679293A SU2679293A SU872219A1 SU 872219 A1 SU872219 A1 SU 872219A1 SU 782679293 A SU782679293 A SU 782679293A SU 2679293 A SU2679293 A SU 2679293A SU 872219 A1 SU872219 A1 SU 872219A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- rotor
- grinding
- parts
- periphery
- blades
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B5/00—Machines or devices designed for grinding surfaces of revolution on work, including those which also grind adjacent plane surfaces; Accessories therefor
- B24B5/36—Single-purpose machines or devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B19/00—Single-purpose machines or devices for particular grinding operations not covered by any other main group
- B24B19/14—Single-purpose machines or devices for particular grinding operations not covered by any other main group for grinding turbine blades, propeller blades or the like
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Structures Of Non-Positive Displacement Pumps (AREA)
Description
II
Изобретение относитс к машиностроению и преимущественно может быть использовано при шлифовании торцов деталей, например, перьев рабочих лопаток турбомашин , свободно закрепленных в-пазах ротора.The invention relates to mechanical engineering and can advantageously be used in grinding the ends of parts, for example, the feathers of turbomachine blades loosely mounted in the slots of the rotor.
Известен способ шлифовани торцов деталей , при котором последние свободно устанавливают по периферии ротора, а шлифовальному кругу и ротору сообщают вращение 1.A known method of grinding the ends of the parts, in which the latter are freely mounted on the periphery of the rotor, and rotation 1 is reported to the grinding wheel and the rotor.
Недостаток известного способа вл етс необходимость дополнительного закреплени деталей в процессе обработки специальными зажимами, что снижает точность, и производительность обработки.The disadvantage of this method is the need for additional fixing of parts during the processing with special clips, which reduces the accuracy and productivity of the treatment.
Цель изобретени - повышение точности и производительности при обработке торцов перьев лопаток турбомашин.The purpose of the invention is to improve the accuracy and performance when processing the ends of the feathers of the blades of turbomachines.
Поставленна цель достигаетс тем, что согласно способу шлифовани торцов деталей , при котором последние свободно устанавливают по периферии ротора, а шлифовальному кругу и ротору сообщают вращение по периферии ротора выполн ют пазы под хвостовики лопаток, а ротор вращают с частотой, при которой центробежные силы превыщают силу резани .The goal is achieved by the method of grinding the ends of the parts, in which the latter are freely mounted on the periphery of the rotor, and the grinding wheel and the rotor are told to rotate around the periphery of the rotor and the rotor is rotated at a frequency at which the centrifugal forces exceed the force cutting.
На чертеже показана схема реализации способа.The drawing shows a diagram of the implementation of the method.
Лопатки 1 нежестко устанавливают в пазах ротора 2, который помещен в кожухе 3, и .раскручивают до частоты вращени , обеспечивающей выт гивание лопаток в 5 рабочее положение центробежными силами, после чего шлифуют торцы лопаток кругом 4. При этом центробежные силы, действующие на лопатку, превышают по своей величине силы резани .The blades 1 are not firmly installed in the slots of the rotor 2, which is placed in the casing 3, and are rotated to a rotational frequency that ensures the blades are drawn to the working position 5 with centrifugal forces, and then grind the ends of the blades around 4. At the same time, the centrifugal forces acting on the blade, exceed the value of the cutting force.
Пример. Ротор с лопатками, помешенными в кожух, раскручивают до частоты врашени 1750-1500 об/мин. Абразивный круг ПП 175X25X32, марки 63С25СМ1 вращают с частотой 2000 об/мин и подают на ротор при продольной подаче S 40 мм/мин 15 и глубине щлифовани t 0,5мм. При обработке лопатки не вибрируют, что свидетельствует о достаточном запасе кинетической энергии и центробежных сил.Example. The rotor with blades encased in the casing is spun up to a frequency of 1750–1500 rpm. The abrasive disc, PP 175X25X32, grade 63С25СМ1 is rotated at a frequency of 2000 rpm and is fed to the rotor at a longitudinal feed of S 40 mm / min 15 and a grinding depth t 0.5 mm. When processing the blades do not vibrate, which indicates a sufficient stock of kinetic energy and centrifugal forces.
В результате обработки по предложенному способу обеспечиваетс повышение точности и производительности обработки, уменьшаетс радиальное биение торцов лопа ток и повышаетс качество изготовлени турбомашин. Предложенный способ обеспечивает повышение КПД турбомашин и снижение трудоемкости 50-60 нормо-часов на один моторокомплект.As a result of the treatment according to the proposed method, the accuracy and productivity of the treatment is improved, the radial runout of the ends of the blades is reduced, and the quality of manufacture of turbomachines is improved. The proposed method provides an increase in the efficiency of turbomachines and a reduction in the labor intensity of 50-60 standard hours per motor-kit.
Claims (1)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782679293A SU872219A1 (en) | 1978-06-05 | 1978-06-05 | Method of grinding the faces of parts |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU782679293A SU872219A1 (en) | 1978-06-05 | 1978-06-05 | Method of grinding the faces of parts |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU872219A1 true SU872219A1 (en) | 1981-10-15 |
Family
ID=20791434
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU782679293A SU872219A1 (en) | 1978-06-05 | 1978-06-05 | Method of grinding the faces of parts |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU872219A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128110A2 (en) * | 1983-06-07 | 1984-12-12 | United Technologies Corporation | Method and apparatus for grinding turbine engine rotor assemblies |
| WO2020156889A1 (en) * | 2019-01-31 | 2020-08-06 | Rolls-Royce Deutschland Ltd & Co Kg | Protection device for protecting the rotor blades of a compressor against sparks and/or particles when machining the blade tips |
-
1978
- 1978-06-05 SU SU782679293A patent/SU872219A1/en active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0128110A2 (en) * | 1983-06-07 | 1984-12-12 | United Technologies Corporation | Method and apparatus for grinding turbine engine rotor assemblies |
| WO2020156889A1 (en) * | 2019-01-31 | 2020-08-06 | Rolls-Royce Deutschland Ltd & Co Kg | Protection device for protecting the rotor blades of a compressor against sparks and/or particles when machining the blade tips |
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