Possibilities of prediction of service life of forming tools

Hrubý, Jiří; Rentka, Josef; Schindlerová, Vladimíra; Krejčí, Lucie; Ševčíková, Xenie

doi:10.21062/ujep/x.2013/a/1213-2489/mt/13/2/178

Cited by 6 publications

(1 citation statement)

References 12 publications

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“…The starting semi-finished product for this type of production is a tube with a drilled center, which is axially rolled after treatment [10]. The rings are also rolled with grooves for covers and seals (see Figure 1 and Figure 2).…”

Section: Analysis Of the Rolling Process (Rolling)mentioning

confidence: 99%

Streamlining the Production Technology of Bearing Components by Cold Rolling

Stančeková

Joch

Ťavodová

et al. 2020

METAL 2020 Conference Proeedings

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The paper is focused on the design of a new technology for the production of bearing components in operating conditions. The design is compared with current technology, the essence of which is the operation of multispindle automats, i. implementation of classic soft operations by turning. From the comparison of technologies, it is possible to see the advantages of the proposed solution in terms of material intensity, as well as the overall quality of production, in the production of large series of components of mechanical structures, such as bearings. Traditional component production technologies often use rods and a forging process (Hatebur), where the deformation is relatively high, the course of the fibers is regular and parallel to the axis of the ring. In order to achieve material and energy savings, it is possible to focus on technologies that provide lower costs but also higher production quality in terms of the higher durability of components. Thus, such a technology is cold forming technology by rolling. The paper deals with the monitoring of the characteristics of the bearing rings processed in this way, where the starting semi-finished product is a tube with a drilled center, which is axially rolled after treatment. In the end, the paper will evaluate cold rolling tests for specific types of inner bearing rings.

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Section: Analysis Of the Rolling Process (Rolling)mentioning

confidence: 99%

Streamlining the Production Technology of Bearing Components by Cold Rolling

Stančeková

Joch

Ťavodová

et al. 2020

METAL 2020 Conference Proeedings

View full text Add to dashboard Cite

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Influence Tool Wear in Material Flow

Schindlerová

Šajdlerová

2017

Adv. Sci. Technol. Res. J.

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The cold bulk forming is a technology that is commonly used in many industrial enterprises. Even though nowadays high demands are posed on labour productivity, quality and own production costs, the findings from practice suggest that not sufficient attention is paid to the issue of tool management. Also, theoretical backgrounds and knowledge in this area are not processed in a sufficiently detailed and comprehensive way. This paper deals with the issue of prediction of the wear surface of the forming tools and their subsequent renewal. The research at selected materials was focused on the course of their straining in contact of the blank with the tool in the process of cold bulk forming. The experiments were based on a simple performance of the conventional upsetting test. On the basis of analysis of the results the mechanism of tool wear by abrasion was determined and its impact on the service life time of the tool and also the possibility of influencing the quality of final parts were evaluated.

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