Theoretical study and prediction of the inner hole reduction and critical mandrel diameter in cross wedge rolling of hollow shaft

2021 ◽  
Vol 294 ◽  
pp. 117140
Author(s):  
Jinxia Shen ◽  
Baoyu Wang ◽  
Cuiping Yang ◽  
Jing Zhou ◽  
Xiaoqing Cao
Keyword(s):  
Theoretical Study ◽  
Cross Wedge Rolling ◽  
Hollow Shaft ◽  
Mandrel Diameter

scholarly journals Formability Difference between TC4 Titanium Alloy Hollow Shaft and AISI 1045 Steel Hollow Shaft Formed by Cross Wedge Rolling with a Mandrel

2021 ◽  
Vol 2101 (1) ◽  
pp. 012053
Author(s):  
Pengni Feng ◽  
Baoyu Wang ◽  
Cuiping Yang ◽  
Huibo Zhang
Keyword(s):  
Deformation Temperature ◽  
Rolling Force ◽  
Peak Stress ◽  
Cross Wedge Rolling ◽  
Hollow Shaft ◽  
Temperature Range ◽  
Aisi 1045 Steel ◽  
Tc4 Alloy ◽  
Aisi 1045 ◽  
1045 Steel

Abstract Production of TC4 alloy hollow shaft formed by cross wedge rolling (CWR) can meet the needs of the lightweight structures in aviation field. Different from the steel, the formability of TC4 alloy is sensitive to deformation temperature. In this work, the formability difference of TC4 alloy hollow shaft and AISI 1045 steel hollow shaft formed by CWR with a mandrel was studied numerically and experimentally. The results show that the influence of temperature on TC4 alloy flow stress is larger than that of 1045 steel, and the peak stress of TC4 alloy at 900 °C is close to that of 1045 steel at 1050 °C. For the hollow shafts of two materials, the ellipticity increases with increasing the inner hole diameter. For the same size of thin-walled billets, the forming quality of TC4 alloy at 900 °C is better than that of 1045 steel at 1050 °C. The CWR temperature range of TC4 alloy is narrower than 1045 steel. The increase of the initial deformation temperature can significantly increase the ellipticity of TC4 alloy and the appropriate forming temperature range of CWR TC4 alloy hollow shaft should be lower than 950 °C. Moreover, the rolling force and torque of TC4 alloy hollow shaft are smaller than that of 1045 steel when CWR hollow billet with the same dimensions.

scholarly journals Effect of mandrel diameter on non-circularity of hollow shafts in cross wedge rolling

2017 ◽  
Vol 207 ◽  
pp. 2376-2381 ◽  
Author(s):  
Xu Huang ◽  
Baoyu Wang ◽  
Jianguo Lin ◽  
Chuanbao Zhu
Keyword(s):  
Cross Wedge Rolling ◽  
Mandrel Diameter ◽  
Hollow Shafts

Research on the Status and Prospect of the Hollow Shafts Forming Technology in High-Speed Train

2012 ◽  
Vol 201-202 ◽  
pp. 1071-1075
Author(s):  
Shu Hua Zheng ◽  
Wen Fei Peng ◽  
Xue Dao Shu
Keyword(s):  
High Speed ◽  
High Efficiency ◽  
Lightweight Construction ◽  
Cross Wedge Rolling ◽  
Heavy Load ◽  
Hollow Shaft ◽  
Forming Technology ◽  
The Status ◽  
New Type ◽  
Hollow Shafts

High-speed and heavy-load are the targets to pursue over a long period of time in high-speed transportation. The key to solve this problem is making the components lightweight. Particularly, the hollow shaft is a new type of lightweight construction. This article explains systematically the current situation and the defects of forming technique for the hollow shafts. The solid shafts formed by Multi-Wedge Cross Wedge Rolling (MCWR) and the hollow shafts by Cross Wedge Rolling(CWR) are researched, and the key problems of hollow shafts formed in MCWR to solve emphatically are pointed out. At the same time, we obtain that MCWR will be the main technology in forming long shafts. The results in this paper provide a new direction for the hollow shafts to form in a high efficiency, energy saving and material saving method.

scholarly journals Investigation on the hole evolution and forming dimensions during cross wedge rolling hollow shaft with mandrel

2020 ◽  
Vol 50 ◽  
pp. 143-147
Author(s):  
Jinxia Shen ◽  
Baoyu Wang ◽  
Longfei Lin ◽  
Junlin Li ◽  
Chuanbao Zhu
Keyword(s):  
Cross Wedge Rolling ◽  
Hollow Shaft

Multi-wedge Cross Wedge Rolling Process of 42CrMo4 Large and Long Hollow Shaft

2016 ◽  
Vol 45 (4) ◽  
pp. 836-842 ◽  
Author(s):  
Wenfei Peng ◽  
Shuhua Zheng ◽  
Yijui Chiu ◽  
Xuedao Shu ◽  
Lihua Zhan
Keyword(s):  
Rolling Process ◽  
Cross Wedge Rolling ◽  
Hollow Shaft

The Rigidity and Performance of a Helicopter Gearbox With a Cantilevered Housing and Two Taper Roller Bearings

1978 ◽  
Vol 100 (4) ◽  
pp. 696-702 ◽  
Author(s):  
M. M. A. Taha ◽  
C. M. McC. Ettles ◽  
P. B. MacPherson
Keyword(s):  
Computer Program ◽  
Design Optimization ◽  
Wall Thickness ◽  
Theoretical Study ◽  
Hollow Shaft ◽  
Roller Bearings ◽  
Shaft Deflection ◽  
And Performance

A theoretical study has been made to determine the rigidity and performance of a helicopter gearbox with a cantilevered housing and two taper roller bearings. Due to the interaction of the deflection of all component parts such as gears, shafts, bearings, casings, spacers, etc., it was necessary to consider these in combination rather than individually. A computer program has been developed for analyzing a typical helicopter type input pinion assembly in which the pinion is supported by a pair of taper roller bearings. This program is suitable for determining the influence that various factors exert on the rigidity of the pinion and the performance of the bearings and which would be difficult to consider by other means. Typically the influence of endfloat or preload, misalignment of the races, casing and shaft deflection, wall thickness of the casing and the hollow shaft, and the spacing between bearings are all considered. The program is now being used as a basis for design optimization in terms of bearing lives and pinion stiffness.

Feasibility Study on Forming Hollow Axle with Multi-Wedge Synchrostep by Cross Wedge Rolling

2012 ◽  
Vol 201-202 ◽  
pp. 673-677 ◽  
Author(s):  
Bao Sou Sun ◽  
Xue Lei Zeng ◽  
Xue Dao Shu ◽  
Wen Fei Peng ◽  
Pei Sun
Keyword(s):  
3D Model ◽  
High Efficiency ◽  
Cross Wedge Rolling ◽  
Hollow Shaft ◽  
Element Simulation ◽  
Near Net Shape ◽  
Net Shape Forming ◽  
3D Software ◽  
Rolling Technology ◽  
Deform 3D

One direction of the cross wedge rolling technology is to realize high-efficiency, precise and near-net-shape forming hollow axle with multi-wedge synchrostep cross wedge rolling. This paper deduced the rotated condition of forming hollow shaft with multi-wedge cross wedge rolling (MCWR) base on forming solid shaft with single-wedge cross wedge rolling, and analyzed technics parameters on the influence of rotated conditions. Through the finite element simulation we got rolling technics parameters on the effect of rolled piece and selecting principle, and then created the 3D model of the equal diameter period of hollow axle with the MCWR. By using DEFORM-3D software, the process of rolling equal diameter period was simulated. The result indicated that it is feasible to roll hollow axle with multi-wedge synchrostep by cross wedge rolling.

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