Study on Macro-Morphology of Hard Whirling Chips

2012 ◽  
Vol 499 ◽  
pp. 312-317
Author(s):  
Hong Yu Zhu ◽  
Ying Li
Keyword(s):  
High Efficiency ◽  
Online Monitoring ◽  
Rolling Bearing ◽  
Bearing Steel ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Machining Parameters ◽  
Essential Difference ◽  
Average Hardness ◽  
Micro Morphology

The technology of hard whirling is a kind of advanced manufacturing technology which integrates high efficiency, high precision and energy saving as a whole and attracts wide attention in machining field around home and abroad. Through studying on experiment of hard whirling machining on rolling bearing steel which has average hardness at 63.5HRC, this article focuses on different understanding of saw-tooth chips, illustrates the essential difference between macro- morphology and micro-morphology of saw-tooth chips, analyzes macro- morphology of saw-tooth chips with their corresponding machining parameters and finally raises a new solution to implement online monitoring on hard whirling machining.

scholarly journals Increasing the productivity of machining

Mechanik ◽  
2019 ◽  
Vol 92 (7) ◽  
pp. 406-409
Author(s):  
Kazimierz Czechowski
Keyword(s):  
Tool Life ◽  
Metal Cutting ◽  
Manufacturing Technology ◽  
Advanced Manufacturing Technology ◽  
Advanced Manufacturing ◽  
Cutting Fluids ◽  
Machining Parameters ◽  
Pvd Coatings ◽  
As Effects ◽  
Selection Of

Selected issues related to increasing the productivity of machining were presented. Examples of increasing the tool life by depositing nanostructured PVD coatings on blades are presented. The increase of productivity through selection of machining parameters based on material machinability tests was discussed. The possibilities of The Institute of Advanced Manufacturing Technology in this regards are presented. Some aspects of materials machinability evaluation and cutting abilities of tool edges, as well as effects of metal cutting fluids on these properties are discussed.

Observer Design for State Estimation of UV Curing Processes

2014 ◽  
Author(s):  
Adamu Yebi ◽  
Beshah Ayalew ◽  
Satadru Dey
Keyword(s):  
State Estimation ◽  
Online Monitoring ◽  
Uv Curing ◽  
Observer Design ◽  
Nonlinear Observer ◽  
Advanced Manufacturing ◽  
Monitoring And Control ◽  
State Observers ◽  
State Measurement ◽  
And Control

This article discusses the challenges of non-intrusive state measurement for the purposes of online monitoring and control of Ultraviolet (UV) curing processes. It then proposes a two-step observer design scheme involving the estimation of distributed temperature from boundary sensing cascaded with nonlinear cure state observers. For the temperature observer, backstepping techniques are applied to derive the observer partial differential equations along with the gain kernels. For subsequent cure state estimation, a nonlinear observer is derived along with analysis of its convergence characteristics. While illustrative simulation results are included for a composite laminate curing application, it is apparent that the approach can also be adopted for other UV processing applications in advanced manufacturing.

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