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Aerospace: turbine type integral blade disc processing
Aerospace: turbine type integral blade disc processing
Application object:An aerospace technology company

The processing process of turbine blisk is a complex and delicate manufacturing technology, which has a wide range of applications in aviation, aerospace and energy, and is an indispensable and important part of modern manufacturing.

Customer Case

Customer pain point:

Turbine parts have the characteristics of complex blade surface, high profile accuracy and surface quality requirements, and difficult to cut materials. The blade milling area of turbine parts is large, and it is limited by narrow flow path, and the tool handle and tool are long and rigid, which is easy to vibrate and let the tool occur in the milling process, reducing the service life of the tool. When machining thin-walled blades, the blades are prone to processing deformation, surface roughness, blade thickening and profile distortion, etc., which is difficult to ensure the design requirements and eventually lead to product scrap.

Solution & Value:

At present, for the numerical control programming of blade disk, impeller and blade ring parts, the team of Suzhou Qianzhineng Technology Co., Ltd. launched QJCAM.Turbo special programming module, combining processing experience and software research and development results to customize excellent process solutions for customers.
QJCAM.Turbo provides CAD assisted modeling, five-axis CNC programming, tool path simulation, post-processing and other functions. It is equipped with a machining strategy library covering the whole process of rough and finishing machining, and supports high-precision and efficient machining strategies such as cycloidal milling, mixed milling, combined milling and variable margin compensation.
Use QJCAM.Turbo NC programming software application advantages:
1. With variable allowance compensation function, the blade profile can be compensated by in-machine measurement or coordinate measurement results;
2. With coarse and fine combined milling, coarse and fine mixed milling function, effectively improve blade rigidity during blade finishing, reduce the negative impact of blade flutter on machining results.
Solution

QJCAM.Turbo runner cycloidal milling strategy open coarse
The cycloidal milling strategy of the flow channel uses a larger axial cutting depth instead of the multi-layer milling strategy in the traditional machining. During the cutting process, the tool load is always changed from small to large and then smaller, avoiding the load mutation of the tool and effectively reducing the tool wear. At the same time, due to the small cutting force in the process of cycloidal strategy cutting, higher machining parameters can be used to greatly improve the machining efficiency.

QJCAM.Turbo blade finishing
Blade finishing strategy controls the tool milling along the blade profile, including variable allowance compensation, tool jointing compensation, distributed finishing, starting transition round machining and other functions. The variable allowance can adjust the theoretical allowance according to the measurement results of the blade profile to compensate the blade profile. The tool compensation can effectively avoid the situation that the tool change causes the tool edge. Distributed finishing can combine the blade semi-finishing and finishing paths into one program to improve the blade machining efficiency and pass rate. Starting the transition fillet machining can complete the root fillet machining through the blade finishing tool path.

QJCAM.Turbo runner layer milling finishing
The finishing strategy of flow path milling controls the tool to finish milling along the direction of the flow line of the wheel hub surface, and the tool can be cut at any side or in the middle of the flow path. The machining parameters can be reduced when machining to the rounded position near the blade root to avoid the situation of tool chatter caused by increasing the amount of cutting tool. The software can generate a stable machining tool shaft to ensure the residual height and consistency of the machined surface.

QJCAM.Turbo combined milling
Rough and fine combined milling strategy can combine cycloidal rough milling, runner layer rough milling, blade finishing and other strategies, according to the relevant parameters to carry out hierarchical machining, and finally output a complete machining program. In the case of different strategies using different tools, there are instructions such as backtracking and tool changing in the program to ensure the accurate execution of the strategy and the safety of the program operation.
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