الفهرس 
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Abstract
Spinning processes are typically performed on multi-stage conventional spinning with telescopic mandrels whose Operation costs time and effort. In the present work, a novel compound tool was Adopted with multi-stage single-station will be adopted. The compound tool consists of a number of successive movable interfered mandrels (SMIM) that suit the needed number of stages of the spun part. These mandrels are assembled Together with stoppers and special springs that serve as ejectors. During operation, the movable interfered mandrels are released successively in a telescopic fashion from the outermost to the innermost to produce the spun part. A rigorous analysis for all the technical aspects of spun part and forming process is presented. The spinning parameters studied here is the rotational speed of 76, 150, 230, and 305 rpm; the feed rate of 0.15, 0.3, 0.45, and 0.91 mm/rev. the tested blank diameters in this research were from 150 to 200 mm with step 5. The measurements done during the process were the forming load measuring. After the process was conducted the products were tested by measuring the hardness, thickness variation along the cup wall, and the surface roughness.
The results of the research revealed that the proposed tool is successful in achieving the required multi-stage spinning process. The effect of the rotational speed and feed rate on the forming load, surface roughness, and the hardness were discussed. The lower forming load was achieved with the lower rotational speed and the lower feed rate. The variation in the cup thickness along the cup wall found to be not more than 0.15. the forming load during the first stage is lower than the second stage and the third stage forming load was larger than the other two stages.