Method for manufacturing three-dimensional flow enclosed-type impeller inter-impeller passage and special clamp thereof
A flow-closed, ternary-flow technology, which is applied in the processing field of ternary-flow closed impellers, can solve problems such as the complexity of the blade profile, the inability to realize the overall processing of the flow channel, and the accuracy to meet the requirements.
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[0042] The technical solution of the present invention will be described in detail below with reference to the accompanying drawings.
[0043] Such as figure 1 As shown, the method for processing the channel between the ternary flow closed impeller blades of the present invention includes the following processing steps: (1) forging the blank; (2) roughing the impeller center positioning hole and the inner and outer profiles; (3) ) CNC machining of the impeller center positioning hole, inner and outer profiles, upper and lower end faces; (4) Positioning and indexing the impeller center hole center, according to the requirements of the angular position of the ternary runner to be processed by the impeller, indexing the drilling diameter one by one Step-shaped pre-holes that increase step by step; (5) Re-machining the step-shaped pre-holes obtained in step (4) by numerical control electrochemical machining, and the numerical control electrochemical machining uses more than one tool ...
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