Processing method of five-fork blade-root moving blades with own shrouds

A processing method and technology of moving blades, which are applied in metal processing equipment, manufacturing tools, details of milling machine equipment, etc., can solve problems such as reduced production efficiency, poor consistency, and unsatisfactory efficiency and dimensional accuracy.
CN103203490BActive Publication Date: 2014-11-26SICHUAN MIANZHU XINKUN MACHINERY MAKING
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SICHUAN MIANZHU XINKUN MACHINERY MAKING
Publication Date
2014-11-26

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Abstract

The invention discloses a processing method of five-fork blade-root moving blades with own shrouds, belonging to the technical field of blade processing. The processing method comprises: step 1, clamping blades, step 2, roughing, step 3, semi-refining, step 4, refining, step 5, positioning a steam-out side of a shoulder of the blade root, a steam-out side of a shroud and a back radial surface of the blade root, selecting a cutter with cutting edges matching with five-fork blade root lines, with a rotating speed being 25-30 r / min, a feeding speed being 12.5 mm / min, a feed amount being 0.5-0.8 mm, and performing fine milling for the five-fork blade root lines of the blade along a linear direction. According characteristics of the five-fork blade-root moving blades with own shrouds, positioning reference surface during processing is unified, a one-time clamping is used to complete processing of each part, thereby effectively preventing accumulative errors, increasing processing precision, optimizing integration processing, shortening processing periods of products, reducing required amount of machine tool, and reducing production cost.
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Description

technical field

[0001] The invention relates to a steam turbine blade processing method, in particular to a processing method of a five-pronged blade root with a crowned blade, belonging to the technical field of steam turbine blade processing. Background technique

[0002] The structure of the five-prong blade root is complex, and its blade root plays an important role in the steam turbine unit. Therefore, the precision of the blade itself, especially the blade root profile, is high. The existing process plan is: datum plane The processing is basically processed by ordinary flat milling and horizontal milling machine tools, and each process is processed in sequence, that is, each datum positioning plane is processed in sequence, and each datum plane needs a process to complete. The disadvantage of sequential processing is that it is easy to accumulate errors. The accumulative errors of multiple clamping and machining, the consistency of ordinary machine tools is not very go...

Claims

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