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Fixture for machining steam seal teeth and two shoulders on steam inlet and outlet sides of marine blade and using method

A technology for sealing teeth and processing ships, which is applied in the direction of manufacturing tools, metal processing equipment, metal processing machinery parts, etc. Problems such as non-uniform profile on the steam outlet side of the intermediate body and rapid tool wear, etc., can avoid unsatisfactory tool connection, large allowance and improve work efficiency.

Inactive Publication Date: 2022-02-08
HARBIN TURBINE +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention solves the problem of using the traditional processing method to process the blade. Due to the multiple clamping during processing, the accumulation of tolerances leads to non-uniform profiles on the outlet side of the blade root intermediate body, and the steam seal teeth on the inlet side and The surface roughness of the steam outlet side does not meet the process requirements; and the tool wears rapidly during processing, resulting in unsatisfactory contact with the blade root on each side of the steam inlet side, poor surface finish, and unstable machining dimensions. Fixtures for processing marine blade inlet and outlet steam seal teeth and two shoulders and their use

Method used

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  • Fixture for machining steam seal teeth and two shoulders on steam inlet and outlet sides of marine blade and using method

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specific Embodiment approach 1

[0021] Specific implementation mode one: combine figure 1 Describe this embodiment, a fixture for processing marine blade inlet and outlet steam seal teeth and two shoulders described in this embodiment includes No. 1 pressure plate 1, base 2, connecting plate 4, blade root positioning block 5, locking bolt 6 and No. 2 platen 7;

[0022] A base 2 is provided on the end surface of the connection plate 4, and a threaded hole is respectively provided at both ends of the upper surface of the base 2, and a locking stud is arranged inside each threaded hole, and a No. Pressing plate 1, No. 2 pressing plate 7 is arranged on the other locking stud, and the top of each locking stud is provided with a locking nut, and the middle part of the upper surface of the base 2 is provided with a blade root positioning block 5, and the blade root A threaded hole is provided on the side of the root positioning block 5, and a locking bolt 6 is provided inside the threaded hole;

[0023] In this s...

specific Embodiment approach 2

[0025] Specific implementation mode two: combination figure 1 Describe this embodiment. This embodiment is a further limitation on the fixture described in Embodiment 1. A fixture for processing marine blade steam seal teeth and shoulders on the inlet and outlet steam sides described in this embodiment. The base 2 A reinforcing rib 3 is provided between the side of the connecting plate 4 and the end face;

[0026] In this specific embodiment, a reinforcing rib 3 is provided between the side surface of the base 2 and the end surface of the connecting plate 4 to improve the stability of the device.

specific Embodiment approach 3

[0027] Specific implementation mode three: combination figure 1 Describe this embodiment, this embodiment is a further limitation on the fixture described in the first embodiment, a kind of fixture for processing the inlet and outlet steam seal teeth and shoulders of the marine blade described in this embodiment, the No. 1 The width of pressing plate 1 is less than the width of No. 2 pressing plate 7;

[0028] In this specific embodiment, the width of the No. 1 pressing plate 1 is smaller than that of the No. 2 pressing plate 7 to improve the accuracy of blade clamping.

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Abstract

The invention discloses a fixture for machining steam seal teeth and two shoulders on the steam inlet and outlet sides of a marine blade and a using method, and relates to the field of marine blade machining. The invention aims at solving the problems that: when a traditional machining method is used for machining a blade, clamping is conducted many times, tolerance accumulation is caused, molded lines of the steam outlet side of a blade root intermediate are not uniform, and the surface roughness cannot meet the technological requirement; and during machining, the abrasion degree of a cutter is high, so that the surface smoothness of each surface of the steam inlet side of the blade root is poor, and the machining size is not stable. A base is arranged on the end face of a connecting disc, the two ends of the upper surface of the base are each provided with a threaded hole, a locking stud is arranged in each threaded hole, a first pressing plate is arranged on one locking stud, a second pressing plate is arranged on the other locking stud, a locking nut is arranged at the top end of each locking stud, a blade root positioning block is arranged in the middle of the upper surface of the base, the threaded hole is formed in the side face of the blade root positioning block, and a locking bolt is arranged in the threaded hole. The fixture is suitable for the field of marine blade machining.

Description

technical field [0001] The invention relates to the field of processing of marine blades, in particular to a fixture for processing steam inlet and outlet steam seal teeth and two shoulders of a marine blade and a use method. Background technique [0002] The current blade is the heart core part of the steam turbine. The quality of the blade processing directly affects the operation of the unit. Therefore, the blades of each level are very strict in processing. In the past processing, due to the sequential processing, There are many problems that cannot meet the technological requirements. [0003] The traditional processing method is to first use 32 high-speed steel thick blade root intermediate steam outlet molding line, vertical CNC milling machine 12MM end mill to finish the blade root intermediate steam outlet side, and then use the end mill to perform blade root steam inlet Rough and fine machining of side A and C, and finally the end mill is manually sharpened to R6 ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23Q3/06B23C3/00
CPCB23Q3/062B23C3/00
Inventor 纪文龙于嘉琳杨铭宇焦子虎祁浩元郭健杨昊正刘春雷黄树文孙永强董志峰田士祺刘继承李鹏王铁柱王斌李洪亮常晓磊孙慧敏薛达
Owner HARBIN TURBINE
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