Volume 20, Issue 9 (September 2020)
Modares Mechanical Engineering 2020, 20(9): 2389-2401 |
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Mehrabi Nasab M, Moetakef Imani B. Dynamic Simulation of Boring Process in B-REP Geometric Modeling Environment. Modares Mechanical Engineering 2020; 20 (9) :2389-2401
URL: http://mme.modares.ac.ir/article-15-38454-en.html
URL: http://mme.modares.ac.ir/article-15-38454-en.html
1- Mechanical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran
2- Mechanical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran ,Imani@um.ac.ir
2- Mechanical Engineering Department, Engineering Faculty, Ferdowsi University of Mashhad, Mashhad, Iran ,
Abstract: (1751 Views)
Prediction of the dynamic behavior of machining operations during the process is the main challenge of machining simulations. Therefore, the investigation of effective parameters in dynamic behavior is of great importance. Machining vibration is one of the most important factors. This article studied the vibration of the process by developing the dynamic model of the boring bar. The high length-to-diameter ratio of the boring tool and its flexibility cause machining vibrations. The amplitude of the tooltip vibrations is a function of the dynamic characteristic of the tool which can lead to the stability or instability of the process. Tool rigidity at low diameter to length ratios is high, and in most cutting conditions the process is stable. The impact test is used to extract the tool's dynamic parameters and dynamic modeling of the process is developed inside the environment of ACIS software which is a powerful Boundary Representation (B-rep) solid modeling engine and it is proposed a novel method for simulating the dynamic equation of boring bar by using a solid modeling technique in a precise geometric environment. The mechanistic approach is used to modeling cutting mechanistic to develop the dynamic force model in the time domain. Also, dynamic time-domain parameters such as force, acceleration, and displacement in the Simulink environment are simulated. The results confirm that the presented geometrical model by considering the tool dynamics is well capable of estimating the force signal and the chip area changes.
Article Type: Original Research |
Subject:
Design and manufacture by computer
Received: 2020/04/19 | Accepted: 2020/07/22 | Published: 2020/09/20
Received: 2020/04/19 | Accepted: 2020/07/22 | Published: 2020/09/20
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