A novel dynamic holding system for thin metal plate shearing machines

Araújo, L.M.; Silva, Francisco; Campilho, R.D.S.G.; Matos, João E.

doi:10.1016/j.rcim.2016.06.006

Cited by 11 publications

(10 citation statements)

References 16 publications

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“…The estimated payback time for the equipment was 2 years, a period that perfectly fits the legitimate ambitions of the sector's entrepreneurs. In the same line, Araújo et al [18] developed an automatic system for application in guillotines, which allowed to eliminate the problem of deformation in the last part of each thin sheet to be cut. The system also has the advantage that it can be applied to guillotines already in use.…”

Section: Literature Reviewmentioning

confidence: 99%

“…However, it can be considered that this work is in line with [16], because the main causes of equipment's breakdowns have been eliminated, being expected a reduction of about 70% regarding the breakdowns history of the first version of the equipment, being also notorious the reduction of the setup time, as in [11], which will be reduced from about 5 hours to 10 minutes regarding the reduction of tasks needed and the simplicity included in the new design taking into account the setup operations, that is, a reduction of about 97%. As in [17,18], the quality of the processed product will be greatly benefited.…”

Section: Novel Approachmentioning

confidence: 99%

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A novel concept of a conduit transport system

Santos

Silva

Campilho

et al. 2019

Procedia Manufacturing

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The automotive component industry has grown steadily in the last decade. The automation of the manufacturing processes has boosted an increase in the production rates of the components, and also contributed to a significant increase in quality. Automation has also contributed significantly to an increase in the production rate, as well as the process flexibility and reliability of the products obtained in the manufacture of spiral tubes used in control cables normally used for the operation of doors, brakes, glass handling, etc. . Currently, the manufacturing process of these components can be performed in a completely automated way, which proves the importance of automation in this sector. This work intends to present the development of a new solution for transporting conduits along an automatic production line, where several operations are carried out on the control cable spirals, namely cutting, deburring, punching of terminals at the ends and insertion of a tube starter, to sample noises during operation. An innovative transport system of the main sub-product (conduits) was developed along the line, which has a much higher reliability than previously recorded, also reducing the setup time required by 97%. The stoppages of the equipment due to problems with the conduits transportation process were also drastically reduced. The solution found is extremely simple and economical, allowing the reuse of numerous parts already used in the previous solution, with the consequent benefits in terms of resources reutilization. As an economical solution, it can be easily adaptable to other similar production processes, inducing very appreciable productivity gains.

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Section: Literature Reviewmentioning

confidence: 99%

Section: Novel Approachmentioning

confidence: 99%

A novel concept of a conduit transport system

Santos

Silva

Campilho

et al. 2019

Procedia Manufacturing

Self Cite

View full text Add to dashboard Cite

show abstract

“…The new automatic system developed has saved 97% of the time previously required for the setup, while contributing in a very positive way to the drastic reduction in equipment breakdowns. With a view to solving sheet metal plate deformation problems in the final part of the cutting process of thin metal sheets in guillotines, Araújo et al [23] developed a completely automated system, capable of being assembled on new guillotines or others already in operation (upgrade) which, through an innovative system of support of the plate during the cutting process, prevents the plate from tending to bend under its own weight at the end of the cut.…”

Section: Introductionmentioning

confidence: 99%

A Novel Automated System for the Handling of Car Seat Wires on Plastic Over-Injection Molding Machines

et al. 2021

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The structure of car seats is becoming increasingly complex, with mixing of wire conformation and plastic injection. The plastic over-molding process implies some labor, which can be reduced if novel solutions are applied in this manufacturing area. The handling of the wires used in car seats is the main problem identified in the process, wasting time both in the feeding and in the extraction of the molds used in the wire over-molding process. However, these machines are usually extremely compact and the free space around them is too short. In classic molding injection machines, there are just two half-molds, the female, and the male. In the over-molding process of wires used in car seats, three half-molds are used in order to increase the cycle time. Thus, to solve this problem, the classic robotic solutions are not appliable due to lack of space and elevated cost. This work describes the development of an automated solution able to handle the wires in both the feeding and the extracting phases of the production cycle, avoiding the traditional labor costs associated with this type of machine. Departing from an industrial need, the developed novel solution is described in detail and can be successfully adapted to other situations of low added-value products where it is needed to increase the productivity and competitiveness of the product. The system developed uses mechanical and pneumatic solutions which, combined, can be used to solve the identified problem, occupying a restricted space and requiring a small budget. This solution can be translated into guidelines that will allow the analysis of situations where the same system can be applied.

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“…Another restriction of cold shearing is that it cannot be used for tube or hallow profiles shearing because the resulted profile will be flattened [2]. Multiple topics from the literature review have been addressed on theoretical and experimental research upon the shearing process of metal bars [3,4], wire profiles [5] or sheet metal raw materials [6], including high speed shearing solutions and process finite element analysis [7,8].…”

Section: Introductionmentioning

confidence: 99%

Device for Precision Cold Shearing Using Bar Torsion

Neagoe¹,

Năsulea²

2019

RECENT

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The precision cold shearing is a production process used for intermediary parts or even final parts manufacture, from round metal bars or other laminated profiles, obtaining a high dimensional and geometric precision, and higher surface quality in comparison with conventional metal shearing processes. There are well-known two methods of precision cold shearing, by conventional shearing or by material torsion. The precision cold shearing by material torsion is suitable for parts manufactured from metal bars which do not have a round transversal section, or various laminated profiles, where the conventional shearing process is difficult to be implemented and to obtain similar results. In the literature, there is presented a special machine tool for metal bar shearing by material torsion. The disadvantage of this machine tool is that the manufacturing costs for such a machine tool are at a very high level. The paper presents a simple device for metal bar precision cold shearing by material torsion which can be easily implemented using a conventional simple action mechanical or hydraulic press. The device uses the principle of spatial material compression, before the proper shear, using a simple lever system, and it is recommended for precision cold shearing of hard and medium-hard materials.

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A novel dynamic holding system for thin metal plate shearing machines

Cited by 11 publications

References 16 publications

A novel concept of a conduit transport system

A novel concept of a conduit transport system

A Novel Automated System for the Handling of Car Seat Wires on Plastic Over-Injection Molding Machines

Device for Precision Cold Shearing Using Bar Torsion

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