Effects of Elastic Behaviour of Dies and Servo Press Machine on Deep Drawing Process

2010 ◽  
Vol 89-91 ◽  
pp. 621-626 ◽  
Author(s):  
Akihiro Watanabe ◽  
Y. Kotani ◽  
K. Nishimura ◽  
Hisaki Watari ◽  
Takanori Yamazaki
Keyword(s):  
Elastic Deformation ◽  
Deep Drawing ◽  
Vertical Displacement ◽  
Elastic Behaviour ◽  
Deformation Analysis ◽  
Servo Press ◽  
Die Structure ◽  
The Press ◽  
Cad Simulation ◽  
Characteristic Features

Characteristic features of elastic deformation of dies and presses during deep drawing were measured to examine the effects of elastic deformation of the press and dies on product accuracy. Strains were measured on the press including dies, a slide and a bolster of a servo press. A strain magnitude of 63 ×10-6 was obtained when the slide position was at the lowest point. Two slide motions of the servo press were selected to determine appropriate manufacturing conditions. An elastic deformation analysis of the die structure was then performed by CAD simulation. To find an appropriate die structure model, the vertical displacement of the die structure in the CAD simulation was compared to the experiment results. It was found that the vertical displacement of the die structure was 0.147 [mm] at the top surface of the die when considering elastic deformation of the die structure as well as the bolster of the servo press.

Characteristic Feature of Dynamic Motion for Servo Press Machine by Direct Modeling Analysis

2015 ◽  
Vol 772 ◽  
pp. 192-196
Author(s):  
Takanori Yamazaki ◽  
Akihiro Watanabe
Keyword(s):  
Characteristic Feature ◽  
Dynamic Behavior ◽  
Elastic Deformation ◽  
High Precision ◽  
Dynamic Motion ◽  
Servo Press ◽  
Modeling Analysis ◽  
Die Structure ◽  
Direct Modeling

Servo press machine can enable us to high precision, but the dynamic behavior does not seem to be considered well. In order to improve the accuracy in manufacturing, it has been discussed effectiveness of reducing the elastic deformation of die structure on forming by mechanically compensating die structure which includes a servo die cushion system.

Design and analysis of a novel seven-bar mechanical servo press with dual motors inputs

2016 ◽  
Vol 231 (20) ◽  
pp. 3855-3865
Author(s):  
Chen Liu ◽  
Sheng-Dun Zhao ◽  
Jing-Xiang Li
Keyword(s):  
Metal Forming ◽  
Theoretical Study ◽  
High Capacity ◽  
High Ratio ◽  
Measured Data ◽  
Servo Motor ◽  
Symmetric Structure ◽  
Servo Press ◽  
The Press ◽  
Dynamic Analyses

This paper proposes a novel high capacity servo press system with two servo motor inputs and high ratio force amplifier mechanism for metal forming. First, the press structure was expressed. The force amplifier was made of seven-bar mechanism which possesses quick-return character and high ratio force amplifier. The symmetric structure balanced the force in horizontal direction, and dispersed the forces on two transmission routes. In theoretical study of the new structure, kinematic and dynamic analyses were obtained by examining the geometry of the structure. The performance of press was discussed by example demonstration. Finally, the kinematic experiments and metal forming experiments were carried out on the prototype machine by using grating scale system. The measured data match the theoretical calculation well, which validates the feasibility of this new press mechanism.

scholarly journals Deep Drawing with Local Hardening on Digital Multi-axis Servo Press

2015 ◽  
Vol 28 (12) ◽  
pp. 1490-1495 ◽  
Author(s):  
Sebastian Kriechenbauer ◽  
Reinhard Mauermann ◽  
Dirk Landgrebe
Keyword(s):  
Deep Drawing ◽  
Servo Press ◽  
Local Hardening

scholarly journals Mechanical Property Analysis of Circular Polymer Membrane under Uniform Pressure

2017 ◽  
Vol 2017 ◽  
pp. 1-9 ◽  
Author(s):  
Sang Jianbing ◽  
Li Xiang ◽  
Xing Sufang ◽  
Wang Wenjia
Keyword(s):  
Mechanical Property ◽  
Polymer Material ◽  
Vertical Displacement ◽  
Polymer Membrane ◽  
Constitutive Parameter ◽  
Deformation Analysis ◽  
Strengthening Effect ◽  
Uniform Pressure ◽  
Governing Equations ◽  
Property Analysis

Mechanical property analysis of circular hyperelastic polymer membrane under uniform pressure has been researched in this work. The polymer membrane material is assumed to be homogeneous and isotropic and incompressibility of materials has been considered. Based on the modified stain energy function from Gao and nonmomental theory of axial symmetry thin shell, finite deformation analysis of polymer membrane under uniform pressure has been proposed in current configuration and governing equations of polymer membrane have been achieved. By utilizing the boundary condition, theoretical results of governing equations have been obtained and vertical displacement distribution and stress distribution have been achieved. The results show that the constitutive parameternhas a strengthening effect on the polymer material and the constitutive parameterαplays a controlling role for the second strain invariantI2, which also has a strengthening effect on the polymer material. This research has revealed the deformational mechanism of polymer membrane and provided reference for the design of polymer membrane.

Forming Potential of Steel/Polymer/Steel Sandwich Composites with Local Plate Inserts

2012 ◽  
Vol 706-709 ◽  
pp. 681-686 ◽  
Author(s):  
Heinz Palkowski ◽  
Olga Sokolova ◽  
Adele Carradò
Keyword(s):  
Deep Drawing ◽  
High Performance ◽  
High Strength ◽  
Metal Plate ◽  
Elastic Behaviour ◽  
Forming Limit ◽  
Sandwich Composites ◽  
Strength And Stiffness ◽  
Naval Engineering ◽  
Forming Behaviour

High-performance metal/polymer/metal hybrid sandwich composites are attractive materials for lightweight constructions in automotive, aerospace and naval engineering world-wide. Due to the excellent combination of mechanical, thermal and elastic properties and, as a result of high forming potential, they can be used in areas of high vibration, where high damping properties of the polymer are demanded and at the same time high strength and stiffness are given by the metal. Disadvantages can be given in case of mechanical or thermal joining of these polymer-based sandwiches because of the elastic behaviour as well as low melting temperature of the polymer. Local metal plate insertions in the soft core at the place of joining can be a solution for such kind of problems. But forming behaviour of sandwich materials with and without local inlays differs strongly. Sandwich composites of that type were produced by roll-bonding. Their quality and their position were controlled by Lockin thermography. The forming behaviour of sandwiches with different geometry, size, type and the position of the inlays was tested by deep drawing and bending and analysed with the help of digital photogrammetry and compared to experimentally obtained mechanical properties. As a result, the local inlays, as well as their geometry, size and type strongly influence the forming limit conditions. The differences in flow behaviour of non-reinforced and reinforced sandwich regions after deep drawing and bending will be presented, as well as the influence of the position of the inlays.

Design of Horizontal Mechanical Presses for Deep Drawing and Ironing Process

2002 ◽  
Author(s):  
Jyhwen Wang
Keyword(s):  
Deep Drawing ◽  
Special Class ◽  
The Press

This paper addresses the kinematics design and analysis of a special class of mechanical presses used for deep drawing and ironing process. The key design objectives are to obtain a longer stroke and a quicker punch return. From the kinematics equations, it is shown that the horizontal quick return mechanism exhibits the preferred characteristics. The behavior of the press is studied based on the placement of the links. The kinematics constraints are observed and the placement of press components to achieve better performance is summarized.

Optimization of Motion Control in High-Speed Servo Press Line

2010 ◽  
Vol 4 (5) ◽  
pp. 439-446 ◽  
Author(s):  
Hideki Taoka ◽  
◽  
Hiroyuki Nobuta ◽  
Hideo Meguri ◽  
Yoshihiro Kageyama
Keyword(s):  
Motion Control ◽  
Production System ◽  
High Speed ◽  
Global Scale ◽  
Automotive Body ◽  
Press Forming ◽  
Servo Press ◽  
The Press

Honda Engineering Co., Ltd. developed an innovative servo press line that achieves the world’s highest level of productivity in producing deep-drawn automotive body panels. The innovative press production system was made so that the press forming conditions and panel transfer motions are adjusted to the dies very accurately for each part to be produced. The servo press line is planned to be expanded to Honda’s production plants on a global scale while allowing further evolution.

scholarly journals DEFORMATION ANALYSIS OF RUNWAY PAVEMENT IN CONSIDERATION OF ELASTIC DEFORMATION BY REPEATED LOADS

1996 ◽  
Vol 1 ◽  
pp. 7-14
Author(s):  
Keiichi AKIMOTO ◽  
Hiroshi KANAZAWA ◽  
Masahiro INADA ◽  
Katsuichi YABUNAKA ◽  
Masashi HAMA
Keyword(s):  
Elastic Deformation ◽  
Deformation Analysis ◽  
Repeated Loads

Use of FE Simulation and Servo Press Capabilities in Forming of AHSS and Aluminum Alloys

2015 ◽  
Vol 639 ◽  
pp. 13-20 ◽  
Author(s):  
Ali Fallahiarezoodar ◽  
Long Ju ◽  
Taylan Altan
Keyword(s):  
Deep Drawing ◽  
Fe Simulation ◽  
Al Alloys ◽  
Form Complex ◽  
Servo Press ◽  
Complex Shapes ◽  
Die Set ◽  
Formed Part ◽  
Selection Of

Production of light weight and crash resistant vehicles require extensive use of AHSS (DP,TRIP,TWIP) and Al alloys to form complex shapes. This paper discusses practical determination of material properties and selection of lubricants for forming AHSS using a die set, designed for deep drawing. Tests were conducted in a 300 ton servo press. Thinning at the critical area of the formed part were measured and compared with FE simulation. Prediction of temperatures in deep drawing of selected DP steels and Al alloys in servo press is also discussed.

scholarly journals Deep-drawing and ironing of 1050 aluminum sheets loaded with vibration using NC servo press machine

2007 ◽  
Vol 57 (6) ◽  
pp. 240-244 ◽  
Author(s):  
Nobuhiro KOGA ◽  
Masayoshi ASAKA ◽  
Kunlachart JUNLAPEN
Keyword(s):  
Deep Drawing ◽  
Aluminum Sheets ◽  
Servo Press
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