scholarly journals A new localization theory of adaptive machining of near-net-shape blades

2020 ◽  
Author(s):  
Neng WAN ◽  
Xiaogang SHEN ◽  
Zhiyong CHANG ◽  
Zezhong C. CHEN
Keyword(s):  
Adaptive Machining ◽  
Localization Theory ◽  
Near Net Shape

Part localization theory and its application on near-net-shape machining

2018 ◽  
Vol 101 (9-12) ◽  
pp. 2663-2679 ◽  
Author(s):  
Zhiyong Chang ◽  
Neng Wan ◽  
Zezhong C. Chen ◽  
Rong Mo ◽  
Dinghua Zhang
Keyword(s):  
Localization Theory ◽  
Near Net Shape

scholarly journals Development of a Novel System for Adaptive Machining of Near-Net-Shape Components

2021 ◽  
Author(s):  
Zhengcai Zhao ◽  
Shengtao Lin ◽  
Yucan Fu
Keyword(s):  
Shape Reconstruction ◽  
Free Form ◽  
Nc Programming ◽  
Spatial Deformation ◽  
Manufacturing Efficiency ◽  
Adaptive Machining ◽  
Machining Allowance ◽  
Near Net Shape ◽  
Cutter Position

Near-net-shape components are popular among the aerospace industry for low material waste and high manufacturing efficiency. However, it is difficult to machine such components into final shapes because the machining allowance is often distributed unevenly and even insufficient. This paper proposed a novel system for adaptive machining near-net-shape components, which integrates units like on-machine measurement based on probe and ultrasonic-sensor, machining allowance constrained localization, tolerance range constrained shape reconstruction, and TCP (tool cutter position) template-based NC programming. Firstly, localization and free form deformation (FFD)-based shape construction are performed within the tolerance ranges of the component, and an even distribution of the machining allowance can be obtained. Next, the quick NC programming that directly manipulates the TCPs by using spatial deformation is introduced. Last, the data transmission between units is illustrated. A case study of the machining titanium turbine blade is performed, which validates the proposed system.

scholarly journals Mechanical properties of rotary swaged steel components

2021 ◽  
Author(s):  
Dhia Charni ◽  
Svetlana Ortmann-Ishkina ◽  
Marius Herrmann ◽  
Christian Schenck ◽  
Jérémy Epp
Keyword(s):  
Mechanical Properties ◽  
Residual Stresses ◽  
Strain Curve ◽  
Dynamic Mechanical Properties ◽  
Process Conditions ◽  
Forming Process ◽  
Rotary Swaging ◽  
Surface Residual Stresses ◽  
Near Net Shape ◽  
As Stress

AbstractThe radial infeed rotary swaging is widely used as a diameter reduction forming process of axisymmetric workpieces, improving the mechanical properties with excellent near net shape forming. In the present study, rotary swaging experiments with different parameter setups were performed on steel tubes and bars under different material states and several resulting property modifications were investigated such as stress-strain curve, hardness, fatigue strength and surface residual stresses. The results show a significant work hardening induced by the rotary swaging process and an improvement in the static and dynamic mechanical properties was observed. Furthermore, the hardness distribution was homogenous in the cross section of the rotary swaged workpieces. Moreover, depending on the process conditions, different residual stresses distribution were generated along the surface.

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