scholarly journals Synergies in control of the cutting processes

2018 ◽  
Vol 226 ◽  
pp. 02009
Author(s):  
Vilor Zakovorotny ◽  
Valery Gvindjiliya

As the rule metal-cutting machine have controllable movements of the executive tool from the computer. However, the shape-generating movements differ from the executive elements movements. These differences are defined by the influence of the deformation of the tool and detail. The deformations are conditioned by complex nonlinear transformation in all system. In turn, the process dynamic system is determined on the basis of the disclosure of the dynamic subsystem interaction. While the dynamic link parameters depend on the trajectories of the executive elements movement. Therefore, it is necessary to agree on the trajectories of the executive elements and the cutting dynamic properties. Agreement characterize the synergies of the external control with the internal links, it characterize the next stage of the enhancement of the cutting processing control.

1998 ◽  
Vol 2 ◽  
pp. 115-122
Author(s):  
Donatas Švitra ◽  
Jolanta Janutėnienė

In the practice of processing of metals by cutting it is necessary to overcome the vibration of the cutting tool, the processed detail and units of the machine tool. These vibrations in many cases are an obstacle to increase the productivity and quality of treatment of details on metal-cutting machine tools. Vibration at cutting of metals is a very diverse phenomenon due to both it’s nature and the form of oscillatory motion. The most general classification of vibrations at cutting is a division them into forced vibration and autovibrations. The most difficult to remove and poorly investigated are the autovibrations, i.e. vibrations arising at the absence of external periodic forces. The autovibrations, stipulated by the process of cutting on metalcutting machine are of two types: the low-frequency autovibrations and high-frequency autovibrations. When the low-frequency autovibration there appear, the cutting process ought to be terminated and the cause of the vibrations eliminated. Otherwise, there is a danger of a break of both machine and tool. In the case of high-frequency vibration the machine operates apparently quiently, but the processed surface feature small-sized roughness. The frequency of autovibrations can reach 5000 Hz and more.


2020 ◽  
Author(s):  
R. Muthu Siva Bharath ◽  
Arunkumar Gopal ◽  
I. Maria James ◽  
S. Lakshmi Sankar

1997 ◽  
Vol 119 (4B) ◽  
pp. 713-716 ◽  
Author(s):  
S. B. Rao

This paper reviews the key developments in the area of metal cutting machine tool design over the last three decades, from a very practical perspective. While defining the drivers of machine tool design as higher productivity and higher accuracy, this paper examines the advances in design from the needs of these two drivers.


2021 ◽  
pp. 247-255
Author(s):  
V. Sychuk ◽  
O. Zabolotnyi ◽  
P. Harchuk ◽  
D. Somov ◽  
A. Slabkyi ◽  
...  

2016 ◽  
Vol 36 (8) ◽  
pp. 673-676 ◽  
Author(s):  
V. A. Grechishnikov ◽  
R. M. Khusainov ◽  
D. R. Akhkiyamov ◽  
S. Yu. Yurasov ◽  
O. I. Yurasova

2020 ◽  
Vol 7 (8) ◽  
pp. 128-131
Author(s):  
Jianjun Yang ◽  
Hongbo Lan ◽  
Xiaoyang Zhu

The course of metal cutting machine tool design is a compulsory course in the manufacturing direction of mechanical specialty in our university. Under the background of engineering education accreditation, the course has been reformed. The new syllabus corresponding to the index points of graduation requirements was established, the teaching contents were integrated and optimized, project teaching method and diversified assessment method were designed, the evaluation method of course objectives achievement was constructed, the closed-loop course quality assurance system of Design-Implementation-Assessment-Evaluation-Improvement was formed. Students’ learning initiative and the learning effect are improved.


Sign in / Sign up

Export Citation Format

Share Document