A quantitative planning method of variable feed rates for cold profiled ring rolling process

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• 作者：Lanyun Li ; Xiao Li ; Jing Liu ; Zhi He
• 关键词：Cold profiled ring rolling ; Feed rate design ; Variable feed pattern ; Hypothesis ; testing approach
• 刊名：The International Journal of Advanced Manufacturing Technology
• 出版年：2016
• 出版时间：October 2016
• 年：2016
• 卷：86
• 期：9-12
• 页码：2585-2593
• 全文大小：582 KB
• 刊物类别：Engineering
• 刊物主题：Industrial and Production Engineering
  Production and Logistics
  Mechanical Engineering
  Computer-Aided Engineering and Design
  
• 出版者：Springer London
• ISSN：1433-3015
• 卷排序：86

文摘

Cold profiled ring rolling (CPRR) is an advanced local incremental forming process with complexity and high nonlinearity. In this process, the feed rate of mandrel is a key factor affecting the expanding speed of ring outer radius and the filling behavior; thus, it is very significant to rationally design the feed rate for precise controlling the deformation process. Aimed at the CPRR process, the problem of feed rate planning under two variable feed patterns, which are constant expanding speed of ring outer radius (P_CES) and constant feed amount per ring revolution (P_CFA), has been solved successfully by using the hypothesis-testing approach in this paper. First, according to the relation between the ring outer radius R and the ring reduction ΔH, a novel mathematical solution for planning the feed rates under P_CES and P_CFA has been proposed, in which a series of points of (R, ΔH) under constant feed rate (P_CFR) pattern have been taken into consideration. Second, two differential equations obtaining variable feed rate curves under P_CES and P_CFA have been built and their solving processes have also been given, and subsequently a new quantitative planning flow of variable feed rates has been presented. Third, an example of three feed rates planning under P_CFR, P_CES, and P_CFA for a practical closed cold T-shaped ring rolling process in the design phase has been realized, and their validity has been proven by three-dimensional finite element numerical simulation. The achievements can provide a guideline for planning the feed rates of the relevant complex profiled ring rolling processes to improve efficiency and reduce cost.