Fabrication of the Sheet-Metal Part with Non-Horizontal End Face Based on the CNC Incremental Forming

2014 ◽  
Vol 1004-1005 ◽  
pp. 1152-1155
Author(s):  
Hu Zhu ◽  
Yi Bo Liu ◽  
Jin Ju
Keyword(s):  
Sheet Metal ◽  
Tool Path ◽  
Incremental Forming ◽  
Cnc Machining ◽  
Sheet Metal Part ◽  
Metal Part ◽  
Machining Center ◽  
Cnc Incremental Forming ◽  
Forming Technology ◽  
Cnc Machining Center

Aiming at the problem that current CNC incremental forming technology can’t directly manufacture the sheet-metal part with non-horizontal end face, the method that can manufacture this kind of sheet-metal part by using the equidistant tool path parallel to the sheet metal was proposed in this paper, in which the support and sheet metal was made together and sheet metal was directly fixed on the support. In addition, the equidistant tool path parallel to the sheet metal was generated using UG software and the sheet-metal part was fabricated by using vertical CNC machining center.

Research on the Forming Path for Fabricating the Sheet-Metal Part with Non-Horizontal End Face Using CNC Incremental Forming

2014 ◽  
Vol 599-601 ◽  
pp. 413-416 ◽  
Author(s):  
Hu Zhu ◽  
Jin Ju ◽  
Yi Bo Liu
Keyword(s):  
Sheet Metal ◽  
Incremental Forming ◽  
Analysis Method ◽  
Metal Part ◽  
Element Analysis ◽  
Sheet Metal Parts ◽  
Cnc Incremental Forming ◽  
Forming Technology ◽  
The Finite Element Analysis

For the purpose of the fabrication of the sheet-metal parts with non-horizontal end face using the sheet metal CNC incremental forming technology, two kinds of path generating methods, namely the level path perpendicular to Z axis method and the equidistant path parallel to sheet metal are proposed in this paper. Both of the paths are generated by Visual C++ and OpenGL graphics library, the effect of the two kinds of forming paths to the forming quality of the sheet part with non-horizontal end face is researched using the finite element analysis method in this paper.

An Overview of the Sheet Metal CNC Incremental Forming Toolpath Generation

2012 ◽  
Vol 503-504 ◽  
pp. 35-39 ◽  
Author(s):  
Hu Zhu ◽  
Wen Wen Lin ◽  
Jin Lan Bai
Keyword(s):  
Sheet Metal ◽  
Tool Path ◽  
Incremental Forming ◽  
Dimensional Accuracy ◽  
Tool Path Generation ◽  
Path Generation ◽  
Tool Paths ◽  
Cnc Incremental Forming ◽  
Forming Technology ◽  
Dieless Forming

The sheet metal CNC incremental forming is a flexible dieless forming technology that forms a sheet part by extruding the sheet metal point by point with the movement of forming tool along the forming path. The tool paths therefore have a great effect on the dimensional accuracy, surface quality and forming time. In this paper, an overview of the research status about the forming tool path generation for sheet metal CNC incremental forming is presented briefly.

Brass 70/30 and Incremental Sheet Forming Process

2013 ◽  
Vol 554-557 ◽  
pp. 1419-1431 ◽  
Author(s):  
Daniel Fritzen ◽  
Anderson Daleffe ◽  
Jovani Castelan ◽  
Lirio Schaeffer
Keyword(s):  
Incremental Forming ◽  
Single Point ◽  
Sheet Forming ◽  
Incremental Sheet Forming ◽  
Cnc Machining ◽  
Forming Process ◽  
Wall Angle ◽  
Machining Center ◽  
Cad Cam ◽  
Cnc Machining Center

This work addresses through bibliographies and experiments the behavior of sheet brass 70/30 for Incremental Sheet Forming process - ISF, based on the parameters: wall angle (), step vertical (ΔZ) strategy and the way the tool. Experiments based on the method called Single Point Incremental Forming - SPIF. For execution of practical tests, we used the resources: software CAD / CAM, CNC machining center with three axles, matrix incremental, incremental forming tool and a device press sheets. Furthermore, measurement was made of the true deformation () and thickness (s1). Practical tests have shown that the spiral machining strategy yielded a greater wall angle, compared to the conventional strategy outline.

Analysis of the Incremental Forming of Titanium F67 Grade 2 Sheet

2013 ◽  
Vol 554-557 ◽  
pp. 195-203 ◽  
Author(s):  
Anderson Daleffe ◽  
Lirio Schaeffer ◽  
Daniel Fritzen ◽  
Jovani Castelan
Keyword(s):  
Incremental Forming ◽  
Roughness Parameter ◽  
Cnc Machining ◽  
Forming Process ◽  
Machining Center ◽  
Cad Cam ◽  
Cp Ti ◽  
Cam Software ◽  
Sheet Deformation ◽  
Cnc Machining Center

Analysis of a formed metal sheet shows the data of the incremental forming process. Variation in sheet deformation results from the process and shows how forming occurred. Another important result is the surface roughness of the sheet, which reports the parameters of the process, machine and tool used. Incremental forming of the titanium CP-Ti grade 2 sheet was performed in the SPIF modality – forming without a point of support, in order to look at the thickness deformations. SPIF incremental forming is characterized as forming that does not use points of support, and therefore simple tooling is used in the process. The following resources were used to perform the practical tests: CAD/CAM software, CNC machining center, incremental die, incremental forming tool and a sheet press device. The results obtained were the finish of the formed surface, measured by the roughness parameter RZ, and the measurement of the true strains ( ) and thickness (s1). Practical tests showed that the limit wall angle ( ), for the CP Ti grade 2 sheet, 0.5 mm thick, is 47º.

The Research of the Logarithmic Spiral Axis and NC Machining

2010 ◽  
Vol 135 ◽  
pp. 102-106 ◽  
Author(s):  
Ning Luo ◽  
You Yi Zheng ◽  
Guo Tai Han ◽  
Ke Jiang
Keyword(s):  
Geometric Modeling ◽  
Tool Path ◽  
Logarithmic Spiral ◽  
Nc Machining ◽  
Cnc Machining ◽  
Machining Process ◽  
Machining Center ◽  
High Fatigue ◽  
A New Technique ◽  
Cnc Machining Center

The characteristics of surface connection include high fatigue strength, high centering ability, easy dismantling and long life. According to these characteristics and based on the analysis of logarithmic spiral equation, the article explores a new technique of the matched logarithmic spiral profile connection to facilitate efficiently by formulating the machining process and analysing the part technology to determine the geometric modeling, tool path and simulation of NC machining graph and to inspect the process of Logarithmic spiral axes CNC Machining Center and CMM.

Virtual Manufacturing of Cranial Prosthesis by Reverse Engineering and Multipoint Forming

2015 ◽  
Vol 809-810 ◽  
pp. 817-822
Author(s):  
Viorel Paunoiu ◽  
Virgil Teodor ◽  
Catalin Fetecau
Keyword(s):  
Reverse Engineering ◽  
Sheet Metal ◽  
Fem Analysis ◽  
Virtual Manufacturing ◽  
Sheet Metal Part ◽  
Metal Part ◽  
Original Algorithm ◽  
Forming Technology ◽  
Multipoint Forming ◽  
State Variation

The applications areas of the multipoint forming technology are very large, due to its flexibility, one of them being medicine, with the field of cranioplasty. For reconstruction of a skull part, a deformed sheet metal part made from titanium alloy could be used. The paper investigates virtual steps in obtaining the sheet metal part for this scope. First the part skull is measured and using reverse engineering is recreated. Then using an original algorithm and a program, the geometry of the mutipoint die is obtained. A FEM analysis is made for the study of the titanium sheet metal behaviour in multipoint forming. The virtual part quality is evaluated in terms of springback and stresses state variation. The results are important for the real implementation of this technology in manufacturing cranial prostheses.

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