xiehe model

The integral impeller design has strong integrity. Compared with other split impeller structures, it realizes the organic unity of the hub and the blades. It is currently mainly used in the industrial and aviation fields. The overall impeller machining also belongs to the category of five-axis impeller machining, but it indirectly improves the manufacturing performance of the software, and at the same time ensures the overall machining accuracy of the parts. More knowledge about the five-axis machining of the overall impeller of the impeller, as follows, will be introduced by the editor.

Difficulties in machining process of five-axis impeller as a whole impeller:

Five-axis machining impeller The shape of the three-dimensional integral impeller is complex, and the blades are mostly ruled surface non-extensible and twisted, and can only be processed by machine tools with five-axis coordinates or above;

The space between adjacent blades of the five-axis machining impeller is small, and the radial channel becomes narrower as the radius decreases. Therefore, when machining the curved surface of the impeller blade, it is very easy to cause interference between the tool and the blade to be processed. The problem of tool interference with adjacent blades;

The five-axis machining impeller has relatively serious elastic-plastic deformation problems during the machining process due to the thin thickness of the overall impeller blade;

There are many constraints in the tool position planning of five-axis machining impellers, and it is difficult to automatically generate non-interfering tool position trajectories.

In recent years, due to the development of five-axis machining impeller technology, the traditional impeller machining technology has been integrated with CNC machining technology. The CNC machining technology of the overall impeller can ensure that the flow channel meets the diameter of the tool to pass through, and the method of cutting around the blade can also be used to avoid the appearance of the blade. The situation of deformation processing, and at the same time solve the problem of knife marks on the blade, killing three birds with one stone. If there is a subsequent problem that the tool cannot pass through, technicians need to use piecewise processing or multiple clamping to further solve the problem.

In addition, in order to better distinguish whether there is a tool passing through the flow channel between the blades, the five-axis machining impeller and the overall impeller machining numerical control technology can choose the position of the two blade roots as the analysis point of the distance, and use this as the tool tip point to select an appropriate Knives, explore.