Tool path optimisation method for large thin-wall part of spacecraft

2017 ◽  
Vol 56 (14) ◽  
pp. 4925-4940 ◽  
Author(s):  
Haichao Wang ◽  
Jie Zhang ◽  
Youlong Lv ◽  
Xiaolong Zhang ◽  
Guoqiang Guo ◽  
...  
Keyword(s):  
Tool Path ◽  
Thin Wall ◽  
Thin Wall Part

scholarly journals Cosine Error-Free Metrology Tool Path Planning for Thickness Profile Measurements

2020 ◽  
Vol 143 (4) ◽  
Author(s):  
Xiangyu Guo ◽  
ChaBum Lee
Keyword(s):  
Path Planning ◽  
Wall Thickness ◽  
Tool Path ◽  
Measuring System ◽  
Profile Measurement ◽  
Thin Wall ◽  
Tool Path Planning ◽  
Thickness Profile ◽  
Thin Walls ◽  
Displacement Sensors

Abstract This paper presents a novel thickness profile measuring system that measures double-sided thin pipe wall surfaces in a non-contact, continuous, cosine error-free, and fast manner. The surface metrology tool path was developed to align the displacement sensors always normal to the double-sided surfaces to remove cosine error. A pair of capacitive-type sensors that were placed on the rotary and linear axes simultaneously scans the inner and outer surfaces of thin walls. Because the rotational error of the rotary axis can severely affect the accuracy in thickness profile measurement, such error was initially characterized by a reversal method. It was compensated for along the rotational direction while measuring the measurement target. Two measurement targets (circular and elliptical metal pipe-type thin walls) were prepared to validate the developed measurement method and system. Not only inner and outer surface profiles but also thin-wall thickness profiles were measured simultaneously. Based on the output data, the circularity and wall thickness variation were calculated. The thickness profile results showed a good agreement with those obtained by a contact-type micrometer (1-µm resolution) at every 6-deg interval. The uncertainty budget for this measuring system with metrology tool path planning was estimated at approximately 1.4 µm.

Elastic-Plastic Deformation of Milling Thin Wall Part

2013 ◽  
Vol 345 ◽  
pp. 321-324
Author(s):  
Ai Jun Tang ◽  
Hai Long Ma ◽  
Zhan Qiang Liu
Keyword(s):  
Plastic Deformation ◽  
End Milling ◽  
High Accuracy ◽  
Fe Analysis ◽  
Deformation Model ◽  
Thin Wall ◽  
Deformation Prediction ◽  
Elastic Plastic ◽  
Very High ◽  
Thin Wall Part

Aircraft components are mostly made by aluminum alloy as thin wall types. These parts are usually end milled to required thicknesses and tight tolerances in specific areas. The thin wall parts are difficult to machine because they are easy to vibrate and deformed due to their lower rigidity. This paper proposes a new elastic-plastic deformation model which is suitable for prediction of machining deformations of end milled thin wall parts. The theoretical deformation model is established on the basis of the equations of Von Kármán. The part deformations are simulated using FE analysis and Matlab. The results show that the deformations for the end milling of thin wall parts can be captured with very high accuracy using the proposed elastic-plastic deformation prediction model.

Formability behaviors of 2A12 thin-wall part based on DYNAFORM and stamping experiment

2013 ◽  
Vol 55 ◽  
pp. 591-598 ◽  
Author(s):  
De-Hai Zhang ◽  
Dai-Ping Bai ◽  
Ji-bin Liu ◽  
Zhe Guo ◽  
Cheng Guo
Keyword(s):  
Thin Wall ◽  
Thin Wall Part

Numerical Simulation and Process Analysis for Injection Forming about the Thin-Wall Conical Centrifugal Disc

2014 ◽  
Vol 941-944 ◽  
pp. 2298-2304
Author(s):  
Jian Hua Zhou ◽  
Li Guo Liu ◽  
Xue Ming He
Keyword(s):  
Numerical Simulation ◽  
Mathematical Model ◽  
Glass Fiber ◽  
Fiber Orientation ◽  
Process Analysis ◽  
Centrifugal Separation ◽  
Thin Wall ◽  
Forming Process ◽  
Thin Wall Part

A numerical simulation mathematical model and sloved method about injection forming for thin-wall part was established. Based on it, Simulation of the injection forming process of centrifugal separation disc. Through the simulation of forming process for PA66 and PA66+30%GF two kinds of materials, realized the injection forming for centrifugal separation disc using PA66+30%GF. Through the anisotropy of glass fiber orientation, improve the stiffness and toughness for centrifugal disc.

Application of Viscous Pressure Forming in Aeronautics and Astronautics

2014 ◽  
Vol 989-994 ◽  
pp. 3306-3309
Author(s):  
Ji Guang Li ◽  
Jie Gang Zhang ◽  
Jing Ping Liu ◽  
Rui Feng Zhao ◽  
Yang Li ◽  
...  
Keyword(s):  
Basic Principle ◽  
High Strength ◽  
Thin Wall ◽  
Forming Process ◽  
Variable Diameter ◽  
Thin Walled ◽  
Viscous Pressure ◽  
Viscous Pressure Forming ◽  
Thin Wall Part ◽  
Super Alloy

Viscous pressure forming (VPF) is a new developed sheet soft-punch forming process in 1900s. The basic principle and characteristics of VPF are described. The applications of VPF technologies of nickel-based super-alloy corrugated thin-walled part, asymmetrical thin-wall part with variable diameter, super-alloy thin-walled part with variable diameters, corrugated thin-walled part with larger diameter and small section are presented. The results show that VPF is suitable for the forming of parts with high strength, low plasticity, super thin-wall and complex shaped.

scholarly journals Dynamic Study of Thin Wall Part Turning

2011 ◽  
Vol 223 ◽  
pp. 591-599 ◽  
Author(s):  
Philippe Lorong ◽  
Arnaud Larue ◽  
Alexis Perez Duarte
Keyword(s):  
Cutting Speed ◽  
Machining Process ◽  
Thin Wall ◽  
Planning Stage ◽  
Cutting Test ◽  
Process Reliability ◽  
Key Factor ◽  
Simulation Parameters ◽  
And Control ◽  
Thin Wall Part

The numerical simulation of machining process is a key factor in the control of parts machining process. Its development aims at improving the process reliability and reduces the time spent during the process planning stage. In this context, we use a specific time domain simulation allowing modeling the dynamics of a thin wall part turning operation. After having introduced the basics of the proposed approach we present a specific cutting test that has been designed to specifically measure and control the dynamics of the part and the cutting conditions of a finishing toolpath. The influences of the cutting speed and damping coefficient on the chatter occurrence are discussed. In order to better control the simulation uses, an analysis of the simulation parameters influences on the simulated results is proposed.

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