Rough machining method of integrated three-dimensional flow blade wheel
A ternary flow and integral technology, which is applied in metal processing equipment, manufacturing tools, milling machine equipment details, etc., can solve the problems of low processing efficiency, inability to solve arc chamfering and clearing corners well, and avoid over-cutting , shorten processing time, reduce wear effect
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[0029] First select or make a stainless steel integral ternary impeller blank. Several spherical milling cutters of different specifications are used to mill and remove the material in the flow passage between each two blades. The milling starts from the blade wheel cover side 4 and gradually advances to the blade hub side 5. As attached figure 2 As shown, the following process steps are included:
[0030] 1) Determine the number of milling layers and the milling depth of each layer according to the changes in the runner space. As the milling depth changes from shallow to deep, the runner space changes from large to small, and the specifications of the spherical milling cutter used are gradually changed from large to small ;
[0031] 2). Use the largest spherical milling cutter allowed to be used in the runner space for a certain layer for milling. Set the ball nose radius of a certain layer of milling cutter Ra9. After milling, leave the arc chamfer A7 next to...
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