Abstract
The aim of this research is to investigate experimentally and theoretically the parameters affecting on the deformation of internally-spline sleeves manufactured by ball spinning tool. Internally-spline sleeves have an increased attention since these parts serve as power transmission means in many industrial applications. The process was investigated experimentally and theoretically for commercial Aluminum tubes. The experimentally investigated variables were: the rotational speed of the mandrel 76, 150, 230 and 305 rpm; the axial feed, 0.3, 0.6, 0.9 and 1.21 mm/ rev; the cross in-feed 1.5, 2, 2.5 and 3 mm. An analytical expression was derived to predict the deformation loads. The theoretically investigated variables were: the mentioned axial feed and cross in-feed at 230 mandrel rotational speed. The effects of these variables on the forming load and the quality of formed sleeves were investigated. The results showed that, these variables affect the forming load and product quality. The optimum values of these variables were determined. The theoretical results with pile up have been found to be in close agreement with the experimental results.
Highlights
Tubular parts with longitudinal inward ribs, interior sections and inside splines rise so as to adjust to the advancement of flight related, aviation and military industries (Ahmed, 2011)
Ballizing tube spinning is generally utilized as a part of producing tubular parts with inward splines (Shu-Yong et al, 2006)
Timeconsuming preparations, material saving, mechanical properties of the soft material improving for a fourmentioned manufacturing processes and high cost for the special splines machines are the obvious demerits of this technique
Summary
Tubular parts with longitudinal inward ribs, interior sections and inside splines rise so as to adjust to the advancement of flight related, aviation and military industries (Ahmed, 2011). Tube spinning is not just known for low load limit and low manufacturing cost, is known for producing parts with high mechanical properties and smooth surface utilizing straightforward tooling (El-Sheikh, 1991). The main advantages of the manufacturing by spinning processes are low forming loads, simple tooling, good dimensional accuracy, low material utilization, low production costs, improved mechanical properties and low power consumption. Such processes were widely used to produce the tubular parts with internal ribs (Prakash and Singhal, 1995; Hayama, 1966). Tube spinning demonstrated great capacity of delivering microgroove blade inside tubes that used to upgrade the heat exchange and capillary geometry in micro-heat pipes (Tang et al, 2007)
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