Producing hollow drive shafts by rotary compression

Pater, Z.; Gontarz, A.; Tomczak, J.; Bulzak, Tomasz

doi:10.1016/j.acme.2014.10.002

Cited by 41 publications

(25 citation statements)

References 6 publications

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“…The research conducted by Ji et al also investigated the process for a hollow shaft with a simple shape [20]. The rotary compression technique has been verified in this respect, and the results are reported in [21]. A stepped shaft produced in these experiments is shown in Fig.…”

Section: Introductionmentioning

confidence: 86%

The influence of hollow billet thickness in rotary compression

Tomczak

Pater

Bulzak

2015

Int J Adv Manuf Technol

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The study presents a selection of numerical and experimental results of producing hollow stepped shafts. The first part of this study describes the advantages of using hollow parts in machine design and discusses the main fields of their applications. Next, an innovative rotary compression method for producing stepped axes and shafts is proposed. In order to estimate the technological potential of rotary compression, we performed comprehensive numerical and experimental analyses of producing hollow stepped shafts by this new technique. First, the rotary compression process for hollow parts was modeled numerically by the finite element method. The 3D modeling was made using the Simufact Forming software. The numerical results were then verified by experimental tests conducted under laboratory conditions. The experiments were performed using a machine designed by the authors of the present study. The following variables were investigated in the experiments: the effect of billet wall thickness on the process, the quality and geometry of products, and variations in loads and torques. The experimental results confirm that rotary compression can be used to produce hollow stepped shafts with a wide range of thicknesses.

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Section: Introductionmentioning

confidence: 86%

The influence of hollow billet thickness in rotary compression

Tomczak

Pater

Bulzak

2015

Int J Adv Manuf Technol

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“…The research works conducted aimed mainly at determining the process parameters influence on the forming course and on the obtained forgings quality [9]. The chosen results of research concerning forming of elementary hollow shafts were presented e.g in works [10][11][12]. Moreover, the tests of hollow complex geometrically forgings (as multi-stepped shafts) by rotary compression method definitely confirmed the usefulness of the proposed technology for parts manufacturing from pipe semi-finished products.…”

Section: Introductionmentioning

confidence: 99%

Theoretical and Experimental Analysis of Rotary Compression of Ball Pins Hollow Forgings

Tomczak

Bulzak

Pater

2016

Adv. Sci. Technol. Res. J.

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This paper presents the chosen results of ball pins hollow forgings forming by means of rotary compression. Theoretical research was based on numerical simulations, conducted using finite element method. The software Simufact was applied for calculations needs. During simulations, kinematics of material flow, strain intensity distribution, damage criterion according to Cockroft-Latham and temperature distributions were determined. Force parameters in the process were also determined and limiting phenomena were identified. Results from FEM modeling were verified in laboratory conditions. Ball pins hollow forgings forming tests were performed in a special forge aggregate. The obtained results fully confirmed the possibility of ball pins hollow forgings manufacturing by means of rotary compression.

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“…For the purposes of the research, the construction of a forge assembly for rotary crimping, further called the rotary crimping machine, was developed. The designed and constructed machine had a segment structure and consisted of ten major sets [15]. Due to the originality of the study, there was no ready-made measurement system that could be used in such a device (Figure 1).…”

Section: Rotary Crimping Machinementioning

confidence: 99%

Control and data acquisition system for rotary compressor

Buczaj¹,

Sumorek²

2017

ITM Web Conf.

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Abstract. The rotary compressor (crimping machine) is a machine designed for making hollow forgings. The rotary compressor is a prototype device designed and built at the Technical University of Lublin. The compressor is dedicated to perform laboratory tests related to the hollow forgings of various shapes using different materials. Since the rotary compressor is an experimental device, there is no control and acquisition data system available. The article presents the concept and the capabilities of the computer control and data acquisition system supporting rotary compressing process. The main task of software system is acquisition of force and kinetic parameters related to the analysed process of the rotary forging compression. The software allows the user to declare the course of the forming forgings. This system allows current recording and analysis of four physical values: feed rate (speed of working head movement), hydraulic oil pressure at inlet and outlet of hydraulic cylinder and the torque of engine. Application functions can be divided into three groups: the configuration of the pressing process, the acquisition and analysis of data from the pressing process and the recording and presentation of stored results. The article contains a detailed description about hardware and software implementation of mentioned functions.

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Producing hollow drive shafts by rotary compression

Cited by 41 publications

References 6 publications

The influence of hollow billet thickness in rotary compression

The influence of hollow billet thickness in rotary compression

Theoretical and Experimental Analysis of Rotary Compression of Ball Pins Hollow Forgings

Control and data acquisition system for rotary compressor

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