CN2649262Y - High-rate grinding machine for fir tree root of steam turbine blade - Google Patents
High-rate grinding machine for fir tree root of steam turbine blade Download PDFInfo
- Publication number
- CN2649262Y CN2649262Y CN 03279079 CN03279079U CN2649262Y CN 2649262 Y CN2649262 Y CN 2649262Y CN 03279079 CN03279079 CN 03279079 CN 03279079 U CN03279079 U CN 03279079U CN 2649262 Y CN2649262 Y CN 2649262Y
- Authority
- CN
- China
- Prior art keywords
- main shaft
- radial
- grinding machine
- turbine blade
- thrust bearing
- 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 - Lifetime
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- Constituent Portions Of Griding Lathes, Driving, Sensing And Control (AREA)
Abstract
The utility model relates to a steam turbine side entry blade root processing creep grinder, which comprises a body, a driving motor, a carriage and a grinding head. The grinding head includes a main shaft, a main shaft sleeve and a radial thrust bearing. The main shaft is provided on the thrust bearing. The radial thrust bearing is in the main shaft sleeve. The utility model is characterized in that the two radial thrust bearings are coordinately arranged back-to-back on the front end of the main shaft and the two radial thrust bearings are coordinately arranged face-to-face on the back end of the main shaft. The thrust plate of the main shaft is provided between the two radial thrust bearings on the front end of the main shaft. The utility model is good in rigidity, small in generated heat, little in thermal expansion effect and high in processing precision.
Description
(1) technical field
The utility model relates to the powerful grinding machine of turbine blade vertical tree type blade root processing.
(2) background technology
A large-size steam turbine has several thousand blades of size, relies on the blade root of blade to be contained on the rotor securely.Because the rotor speed height, blade is long, Heavy Weight, and centrifugal force is big during the steam turbine running, so six load-carrying surface tolerances of blade root are very high, about 0.005～0.01.The processing of existing turbine blade vertical tree type blade root is to be operated by the import grinding machine of costliness, the cost height, and the cycle is long.Be that the thrust direction of two bearings arranged side by side is consistent on one group the bearing by two radial-thrust bearings arranged side by side respectively before and after the grinding spindle of existing grinding machine is installed in; Spring is equipped with in front at two rear bearings arranged side by side, keeps the axially stable and rigidity of main shaft.But this spline structure is for the powerful grinding machine of precision, and thermal expansion that the high speed rotation of main shaft when work produces and the heat that is produced by spring are difficult for distributing, and have influenced the machining accuracy of main shaft.
(3) summary of the invention
The utility model has overcome the defective of prior art, provides a kind of turbine blade vertical tree type blade root powerful grinding machine.This brute force grinding machine spindle good rigidly is given birth to heat and is lacked, and thermal expansion influence is little, the machining accuracy height.
The utility model is achieved in that the powerful grinding machine of a kind of turbine blade vertical tree type blade root, comprise lathe bed, drive motors, planker, bistrique, bistrique comprises main shaft, collar bush, radial-thrust bearing, main shaft is contained on the radial-thrust bearing, radial-thrust bearing is contained in the collar bush, it is characterized in that two radial-thrust bearings that the front end of main shaft is equipped with are to install side by side back-to-back, two radial-thrust bearings that be equipped with the rear end of main shaft are for installing side by side face-to-face.
The powerful grinding machine of above-mentioned turbine blade vertical tree type blade root, the thrust disc on the described main shaft is contained between two radial-thrust bearings of front end.
Operation principle of the present utility model is that the installation of grinding spindle adopts radial-thrust bearing to assemble face-to-face, makes main axis stiffness good; Thrust disc reach on the main shaft, littler than the distance of traditional structure, thus thermal expansion influence is little; Spring before the rear bearing of cancellation in the traditional structure, rear bearing floats, can make collar bush Nei Shengre few, reduce the main shaft thermal expansion and be out of shape influence to emery wheel position on the main tapping, machining accuracy height backward.
(4) description of drawings
Fig. 1 is the powerful grinder head main axle structure of a utility model turbine blade vertical tree type blade root schematic diagram.
Among the figure: 1 main shaft, 2 front end radial-thrust bearings, 3 rear end radial-thrust bearings, 4 thrust discs, 5 collar bushes.
(5) specific embodiment
Provide embodiment of the present utility model below in conjunction with accompanying drawing.
Referring to Fig. 1, the powerful grinding machine of a kind of turbine blade vertical tree type blade root, comprise lathe bed, drive motors, planker, bistrique, bistrique comprises main shaft 1, collar bush 5, radial-thrust bearing, main shaft 1 is contained on the radial-thrust bearing, radial-thrust bearing is contained in the collar bush 5, and two radial-thrust bearings 2 that main shaft 1 front end is equipped with are for installing side by side back-to-back, and two radial-thrust bearings 3 that be equipped with main shaft 1 rear end are for installing side by side face-to-face.Thrust disc 4 on the main shaft 1 is contained between two radial-thrust bearings 2 of front end.Grinding wheel stand is equipped with on the top of main shaft 1, emery wheel is housed on the grinding wheel stand work piece is carried out grinding; The tail end of main shaft 1 is equipped with the rotation of drive motors drive shaft.
Claims (2)
1. the powerful grinding machine of a turbine blade vertical tree type blade root, comprise lathe bed, drive motors, planker, bistrique, bistrique comprises main shaft, collar bush, radial-thrust bearing, main shaft is contained on the radial-thrust bearing, radial-thrust bearing is contained in the collar bush, it is characterized in that two radial-thrust bearings that front-end of spindle is equipped with are installation side by side back-to-back, two radial-thrust bearings that rear-end of spindle is equipped with are for installing side by side face-to-face.
2. the powerful grinding machine of turbine blade vertical tree type blade root according to claim 1 is characterized in that the thrust disc on the main shaft is contained between two radial-thrust bearings of front end.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279079 CN2649262Y (en) | 2003-09-29 | 2003-09-29 | High-rate grinding machine for fir tree root of steam turbine blade |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03279079 CN2649262Y (en) | 2003-09-29 | 2003-09-29 | High-rate grinding machine for fir tree root of steam turbine blade |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2649262Y true CN2649262Y (en) | 2004-10-20 |
Family
ID=34332250
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03279079 Expired - Lifetime CN2649262Y (en) | 2003-09-29 | 2003-09-29 | High-rate grinding machine for fir tree root of steam turbine blade |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2649262Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443986B (en) * | 2006-05-17 | 2012-12-12 | 马渊马达株式会社 | Motor equipped with reducer and method of manufacturing the same |
-
2003
- 2003-09-29 CN CN 03279079 patent/CN2649262Y/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101443986B (en) * | 2006-05-17 | 2012-12-12 | 马渊马达株式会社 | Motor equipped with reducer and method of manufacturing the same |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: SHANGHAI ELECTRIC POWER STATION EQUIPMENT CO. Free format text: FORMER OWNER: SHANGHAI TURBINE CO., LTD. Effective date: 20080509 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20080509 Address after: No. 188, Chun Chun Road, Shanghai, Minhang District: 201100 Patentee after: Shanghai Electric Station Equipment Co., Ltd. Address before: No. 333, Jiangchuan Road, Shanghai, Minhang District: 200240 Patentee before: Shanghai Steam Turbine Co., Ltd. |
|
| C17 | Cessation of patent right | ||
| CX01 | Expiry of patent term |
Expiration termination date: 20130929 Granted publication date: 20041020 |