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A digital twin study for immediate design / redesign of impellers and blades: part 1: CAD modelling and tool path simulation.

Anbalagan, Arivazhagan; Shivakrishna, Bachu; Srikanth, Kuthadi Sai


Bachu Shivakrishna

Kuthadi Sai Srikanth


This paper presents a digital twining study conducted for an immediate design / redesign and manufacturing of on impellers and blades. It is by accomplished by developing (i) CAD automation methods, based on the standard modelling procedures and (ii) Manufacturing automation based on the 3/3+1/3+2/5 axis milling process. Initially, the CAD model of impeller / blade is created by utilizing the dimensional parameters obtained through standard design calculations / data. It is then parametrized and converted to an automated model through simple dimensional rules and geometric algorithms developed for the purpose. After this stage, the CAD model is analyzed for manufacturing automation where the process planning data comprising cutting tools, process parameters and setups are selected. Here, the tool paths are generated for 3/3+1/3+2/5 axis milling considering a CNC Vertical Machining Center (VMC) to digitally twin milling process. Both the CAD modelling and manufacturing process plans including tool path generation are captured through journaling and customized / improved using the Application Programmable Interface’s (API’s) to suit the present scope. In this paper, the first part on CAD modelling and manufacturing simulation methodologies are discussed through validating the digital twining concept in a virtual environment. The work is developed with the focus to help industries moving towards Industry 4.0 and requiring a constant design improvement in their products. It is by emphasizing the importance of digital twinning concept where a concurrent verification of design and manufacturing process can be achieved.


ANBALAGAN, A., SHIVAKRISHNA, B. and SRIKANTH, K.S. [2021]. A digital twin study for immediate design / redesign of impellers and blades: part 1: CAD modelling and tool path simulation. Materials today: proceedings [online], In Press. Available from:

Journal Article Type Conference Paper
Conference Name 3rd International conference on materials, manufacturing and modelling 2021 (ICMMM 2021)
Conference Location Vellore, India [virtual conference]
Acceptance Date Mar 8, 2021
Online Publication Date Apr 4, 2021
Deposit Date Mar 15, 2021
Publicly Available Date Apr 5, 2022
Journal Materials today: proceedings
Publisher Elsevier
Peer Reviewed Peer Reviewed
Keywords Digital twin; CAD automation; Process planning; Machining; Simulation; Impellers; Blades
Public URL