An integrated CAD system for the blanking of irregular-shaped sheet metal products

Choi, Jongkeun; Kim, Byung M.; Cho, Hae Y; Kim, Chul; Kim, Jaehwan

doi:10.1016/s0924-0136(98)00046-6

Cited by 18 publications

(4 citation statements)

References 1 publication

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“…Choi et al [5][6][7][8] introduced STRTDES which was developed for blanking die design of free-form parts. Although it worked better than previous systems, it did not behave well where nesting, piloting, and die component designs of complex shapes were concerned.…”

Section: Related Workmentioning

confidence: 99%

Development of a new method to automatic nesting and piloting system design for progressive die

Moghaddam

Farsi

Anoushe

2014

Int J Adv Manuf Technol

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Over the last few decades, sheet metal parts have had a number of applications in the industry. The most important and most used type of the dies to production these parts is progressive dies. Computer-aided design of these dies consists of a considerable number of sections. The two most important types of these sections are nesting and piloting. Finding the best nesting plays an important role in the final cost of production and for an accurate strip positioning, the appropriate piloting system is required. In this paper, a new method for curve recognition by dividing part's element into component points is presented for finding the best nesting and piloting state. Curve recognition data and the algorithms for finding the best nesting and piloting system were obtained just by using algebraic equations. This method leads to a decrease in the time of design. The best nesting for all parts that includes line and circular arc will be obtained with the high precision. The semi-direct and indirect pilot hole centers and its diameter will be obtained by defining four matrixes. This system is written in visual basic programming language in the SOLIDWORKS 2010 software. Finally, to compare the system's results to similar system, the nesting and piloting systems for the number of samples are analyzed.

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Section: Related Workmentioning

confidence: 99%

Development of a new method to automatic nesting and piloting system design for progressive die

Moghaddam

Farsi

Anoushe

2014

Int J Adv Manuf Technol

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“…Shaffer [1], Fogg and Jaimson [2],Shibata and Kunimoto [3] and Nakahara et al [4] introduced several systems for a progressive die design but their systems were simple. Choi et al [5] developed a compact and practical CAD system for the blanking or piercing of irregular shaped sheet metal products and stator and rotor parts. Cheok and Nee [6] developed a computerized system to design and production of piercing progressive dies.…”

Section: Related Workmentioning

confidence: 99%

A New Computerized System for Piercing and Bending Progressive Die Design

Farsi

2011

AMM

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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.

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“…After a thorough analysis of sheet metals processes, beginning with Radhakrishnan [9] and Choi [10], the research obtained a complete list of all the operations that are related with drawing processes. This analysis takes into account the influence of the geometrical features of the part on the calculation of the manufacturing parameters, as well as the correlations between these factors.…”

Section: Knowledge Acquisitionmentioning

confidence: 99%

Activity model and computer aided system for defining sheet metal process planning

Ciurana

Ferrer

Gao

2006

Journal of Materials Processing Technology

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This paper focuses on the problem of choosing the manufacturing route and characteristics in sheet metal processes, a very important element in computer aided process planning (CAPP) systems. At present, decisions concerning the operations, die, machine and process parameters used in sheet metal are based on experience.One of the objectives of this work has been to develop an activity model to help define sheet metal processes. This activity model allows focusing on the second objective, which is to implement a computer aided system to select and define the parameters of the process definition in the case of drawing operations with sheet metal. The result is the selection of parameters related to the operations chosen, the kinds of operations, the sequence of these operations and the lay-out die dimensions for the product.A range of parts were evaluated. They were chosen because they were considered to be representative cases. The results obtained by the system are compared with the values proposed in reference manuals, and by experienced experts. The work has served to determine how to adjust the computer aided system.Applying the method helps to make the right decisions about the sheet metal operations related to drawing processes. The experiments have led to a reduction in processing times.

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An integrated CAD system for the blanking of irregular-shaped sheet metal products

Cited by 18 publications

References 1 publication

Development of a new method to automatic nesting and piloting system design for progressive die

Development of a new method to automatic nesting and piloting system design for progressive die

A New Computerized System for Piercing and Bending Progressive Die Design

Activity model and computer aided system for defining sheet metal process planning

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