Development of a method to recognize punch shapes for progressive dies

2014 ◽  
Vol 229 (6) ◽  
pp. 963-972 ◽  
Author(s):  
HMA Hussein ◽  
F Wang ◽  
J Abu Qudeiri
Keyword(s):  
Progressive Dies

Semi-Enclosed Cold Forging Process Analysis and Progressive Die Design of CPU Fin

2008 ◽  
Vol 575-578 ◽  
pp. 174-179
Author(s):  
Juan Hua Su ◽  
Feng Zhang Ren ◽  
Lei Wang
Keyword(s):  
Production Efficiency ◽  
High Efficiency ◽  
Process Analysis ◽  
Die Design ◽  
Cold Forging ◽  
Forming Process ◽  
Element Analysis ◽  
Whole Process ◽  
Progressive Dies ◽  
Transfer Unit

This paper analyzes the forming process methods of fin used in CPU chip to emit heat. The whole process is blanking, the first forging forming, the second forging (sizing), and trimming. The chamfer design of CPU fin blank is simulated by finite element analysis. The optimized chamfer 1.6 mm is available. Semi-enclosed cold forging of progressive dies is put forward. The newly designed transfer unit is applied, which unifies the merit of high efficiency of the progressive dies and the high material-using ratio of the project die. Quick disassembly structure is designed and pins are used as quick disassembly pins by means of ball bearing bushing. The unique processing of the shearing scrap structure is adopted when designing the inverted trimming dies. Compared with the traditional die, the mechanization and electrization are realized to increase the production efficiency and get highly precise CPU fin.

Effective Stripper-Holding on High Speed Precision Blanking of Electronic Machine Parts

2005 ◽  
Vol 6-8 ◽  
pp. 805-808
Author(s):  
F. Sekine
Keyword(s):  
Mechanical Model ◽  
High Speed ◽  
Thin Sheet ◽  
Dimensional Accuracy ◽  
New Method ◽  
Important Process ◽  
Sheet Metals ◽  
Progressive Dies ◽  
Machine Parts

The blanking of thin sheet metals using progressive dies is an important process on production of precision electronic machine parts. As a model of IC leadframe, an I-shaped and an Lshaped models were blanked and influences of blanking conditions on dimensional accuracy of blanked lead were examined. Furthermore, a mechanical model is proposed to explain the affect of the blanking conditions on product accuracy. In these days, more fine leads are required as electronic machines become more precise and accurate. It must be treated that leads are firmly held for blanking leadframes accurately. In this paper, an effective method of stripper holding leads strongly are discussed and a new method using newly designed stripper is proposed. Consequently the effect of it on lead accuracy is proved.

Automatic strip layout design in progressive dies

2010 ◽  
Vol 23 (3) ◽  
pp. 661-677 ◽  
Author(s):  
Mehrdad Ghatrehnaby ◽  
Behrooz Arezoo
Keyword(s):  
Layout Design ◽  
Strip Layout ◽  
Progressive Dies

Computer-Aided Process Planning of Strip Layout in Progressive Dies

2011 ◽  
Vol 110-116 ◽  
pp. 5106-5110
Author(s):  
Alan C. Lin ◽  
Dean K. Sheu
Keyword(s):  
Sheet Metal ◽  
Layout Design ◽  
New Approach ◽  
Computer Aided Process Planning ◽  
Step Process ◽  
Strip Layout ◽  
Evaluation Functions ◽  
Progressive Dies ◽  
Computer Aided ◽  
Manufacturing Knowledge

This paper proposes a two-step process which uses the knowledge gathered in sheet-metal manufacturing practice as the basis to find proper layouts of strip in progressive dies. In the first step, manufacturing knowledge is used to formulate various rules to cluster the punches into five categories for reducing the searching space of feasible layouts. Evaluation functions are then applied to find the better ones from the feasible layouts. This two-step process provides a new approach to solving the problem of “explosive combinations” in strip layout design

The Rapid Design System of Stamping Process Based on KBE

2013 ◽  
Vol 347-350 ◽  
pp. 3460-3464
Author(s):  
Hong Hui Huang ◽  
Ling Yun Wang
Keyword(s):  
Process Design ◽  
Process Model ◽  
Knowledge Engineering ◽  
Design System ◽  
Design Quality ◽  
Process Knowledge ◽  
Model Driven ◽  
Development Platform ◽  
Progressive Dies ◽  
Stamping Process

This paper takes UGNX6.0 as the development platform, by using its UG/KF development tools, fusing feature and knowledge together, so as to realize the process associated with the geometric design knowledge and stamping process design. Based on the features of stamping process, the classification of stamping process knowledge has been studied. With the object-oriented method, the rule-based and instance-based technology for expressing and acquiring the stamping process knowledge is discussed. Based on this, the stamping process model driven by knowledge has been established. It showed the importance of the CAD technology in designing of relatively complex progressive dies. Based on the knowledge engineering process designed, the degree of intelligence stampings process design has been enhanced, design quality and efficiency has been improved, and the dependence of the process design experience of designers has been reduced.

A New Computerized System for Piercing and Bending Progressive Die Design

2011 ◽  
Vol 110-116 ◽  
pp. 4823-4831 ◽  
Author(s):  
Mohammad Ali Farsi
Keyword(s):  
Sheet Metal ◽  
Die Design ◽  
Network Systems ◽  
Progressive Die ◽  
Progressive Dies ◽  
Cad Cam ◽  
Formed Part ◽  
Design And Manufacture ◽  
Computerized System ◽  
Progressive Die Design

A Progressive die is used to transform flat strips of sheet metal into a formed part. This transformation is performed progressively by a series of stations that cut and bend the material into a desired shape. The progressive dies reduce the time and cost of producing complex sheet metal components. The design and manufacture of these dies are difficult. CAD/CAM systems have been proved very useful tools for this task. In this paper, a new system for design of the piercing and bending progressive die is described. In this system, piercing and bending operation are separated and the sequencing of each type is done individually. In this system first sequence of the piercing stations are determined then bending operations are sequenced based on a classification and fuzzy algorithm. Also, neural network systems are used to determine final angle of bends and die parameters. The capability of the system is shown using a sheet metal component.

Insert design automation for progressive dies

2005 ◽  
Vol 28 (3-4) ◽  
pp. 279-285 ◽  
Author(s):  
R.D. Jiang ◽  
B.T. Lauw ◽  
A.Y.C. Nee
Keyword(s):  
Design Automation ◽  
Progressive Dies
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