Experimental Researches on the Limit Angle of Conical Parts Manufactured by Single Stage Incremental Forming on CNC Lathes

Neagoe, Ion; Filip, Alexandru Catalin; Vasiloni, Mircea Anton

doi:10.4028/www.scientific.net/amm.371.168

Cited by 6 publications

(9 citation statements)

References 8 publications

(21 reference statements)

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“…1 shows that the part's wall should be thinner when the slope angle λ is greater. This fact was confirmed [6] by the experimental research. However, most of researches done until now [1,2,6] show that the sine law is not fully confirmed in quantitative terms.…”

Section: Introductionsupporting

confidence: 68%

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Digital Scanning Method for Thickness Analysis of Hollow Parts Manufactured by Incremental Forming on a CNC Lathe

Neagoe

Filip

Manolescu

2014

AMM

Self Cite

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Incremental forming is one of the manufacturing methods which uses relative simple technological equipment and can assure a high rate of the process flexibility. These requirements can assure the efficiency demanded by the industrial market, in the case of small production batches, which occur more and more often nowadays. To ensure the stability of the process, the required quality and dimensional accuracy of the parts have to be well controlled. This requires the evaluation of the parts dimensions by certain measurements. For hollow parts, the measurement of their thickness is always a challenge, mainly when the dimensions are smaller and their depth is greater. This paper presents a digital method for the parts dimensional evaluation and analysis, which can be very accurate and does not need mechanical contacts with the part during measurements. The parts were scanned with a 3D blue light scanner, on their both sides and then the data was processed into specialized software, to obtain the parts digital surface from the 3D scanned data. The digital data was compared with the theoretical approach, to establish some conclusions on the validity of the sinus law and to point out the critical zones, where the thinning is strong and may cause fractures. The digital scanning method presented can be used also for quality control and inspection, as the processing steps are considered user-friendly and easy to adapt to certain specific requirements.

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Section: Introductionsupporting

confidence: 68%

“…During previous researches done by the authors of this paper [6], there was proved that the hollow conical parts manufactured by incremental forming, like the ones shown in Fig. 1, have a general tendency of thinning their wall, according to the well-known law of sinus:…”

Section: Introductionmentioning

confidence: 83%

Digital Scanning Method for Thickness Analysis of Hollow Parts Manufactured by Incremental Forming on a CNC Lathe

Neagoe

Filip

Manolescu

2014

AMM

Self Cite

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“…The device form figure 1a [3] is manufactured from blocks at a certain height, to allow the part deformation in forming direction, and the device from figure 1b [4] is a set of "U" profiles assembled to obtain the device frame and a fixing plate which clamp the sheet metal blank on those profiles. In figure 1c [5] is presented a fixing device for CNC lathes compounded from a set of circular plates between which the blank is clamped. A fixing device positioned in vertical direction is presented in figure 1d [6] and it is used in incremental deformation using industrial robots.…”

Section: Fixing Device Designmentioning

confidence: 99%

Design and manufacturing of a fixing device for incremental sheet forming process

Nasulea

Oancea

2018

MATEC Web Conf.

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In incremental sheet forming processes, the expensive dedicated tool are avoided and replaced with a cheap and simple fixing device which support the sheet metal blanks. The current paper presents how a fixing device used for single point incremental forming device is designed, FEM simulated and manufactured. The fixing device can be used for parts with a cone frustum and pyramidal frustum made of DC05 deep drawing steel. The forces developed in the process and the device displacements were estimated using FEM simulation. The device components were manufactured using a CNC machines and the physical assembly is also presented in the paper.

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“…For an axis symmetric part (SIF) a CNC lathe is suitable to perform the process in less time, but also a CNC milling machine can be used (Fig. 5) [8]. More than that, some researcheres or companies also developed or porposed some machines, who was special builded for ISF process.…”

Section: Equipments Used For Isfmentioning

confidence: 99%

“…6a) [15], and bended when it is used on a CNC lathe (Fig. 6b) [8]. A wide range of tool diameters are used, starting at small diameters of 6 mm and going up to large tool diameters of 100 mm for the manufacturing of large parts [14].…”

Section: Forming Toolsmentioning

confidence: 99%

Incremental deformation: A literature review

Nasulea

Oancea

2017

MATEC Web Conf.

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Abstract. Nowadays the customer requirements are in permanent changing and according with them the tendencies in the modern industry is to implement flexible manufacturing processes. In the last decades, metal forming gained attention of the researchers and considerable changes has occurred. Because for a small number of parts, the conventional metal forming processes are expensive and time-consuming in terms of designing and manufacturing preparation, the manufacturers and researchers became interested in flexible processes. One of the most investigated flexible processes in metal forming is incremental sheet forming (ISF). ISF is an advanced flexible manufacturing process which allows to manufacture complex 3D products without expensive dedicated tools. In most of the cases it is needed for an ISF process the following: a simple tool, a fixing device for sheet metal blank and a universal CNC machine. Using this process it can be manufactured axis-symmetric parts, usually using a CNC lathe but also complex asymmetrical parts using CNC milling machines, robots or dedicated equipment. This paper aim to present the current status of incremental sheet forming technologies in terms of process parameters and their influences, wall thickness distribution, springback effect, formability, surface quality and the current main research directions.

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Experimental Researches on the Limit Angle of Conical Parts Manufactured by Single Stage Incremental Forming on CNC Lathes

Cited by 6 publications

References 8 publications

Digital Scanning Method for Thickness Analysis of Hollow Parts Manufactured by Incremental Forming on a CNC Lathe

Digital Scanning Method for Thickness Analysis of Hollow Parts Manufactured by Incremental Forming on a CNC Lathe

Design and manufacturing of a fixing device for incremental sheet forming process

Incremental deformation: A literature review

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