Effect of insert micro-texture types on the cutting force and temperature under various cooling conditions

Author(s):  
Guoliang Liu ◽  
Shufeng Sun ◽  
Delong Dong ◽  
Jintao Zheng ◽  
Longjie Dai
Metals ◽  
2020 ◽  
Vol 10 (9) ◽  
pp. 1187
Author(s):  
Kamil Leksycki ◽  
Eugene Feldshtein ◽  
Joanna Lisowicz ◽  
Roman Chudy ◽  
Roland Mrugalski

This paper analyses three components of total cutting force and chip shape changes when finish turning 17-4 PH (precipitation hardening) stainless steel. A Finite Element Method (FEM) simulation of cutting forces was also performed using the Johnson–Cook constitutive model. The results were compared with those obtained from experimental studies. Variable feeds of 0.05–0.4 mm/rev and depth of cut of 0.2–1.2 mm with a cutting speed of 220 m/min were used. The studies were carried out under dry and wet cooling conditions and with the use of minimum quantity lubrication (MQL). This research was realized based on the Parameter Space Investigation (PSI) method. Statistical analysis of the obtained results was carried out using Statistica-13 software. It was found that the cutting force Fc and feed force Ff depend on the depth of cut and feed, and the passive force Fp depends mainly on the feed. Compared to dry cutting conditions, a reduction of 43% and 39% of the cutting force Fc was achieved for wet machining and MQL machining, respectively. Regardless of the cooling conditions, a favorable chip shape was registered for ap = 1–1.1 mm and f = 0.25–0.3 mm/rev. Compared to the experimental studies, the FEM simulation showed differences of ~13% for the cutting force Fc and of ~36% for the feed force Ff.


Mechanik ◽  
2016 ◽  
pp. 1512-1513
Author(s):  
Radosław Maruda ◽  
Stanisław Legutko ◽  
Grzegorz Królczyk ◽  
Włodzimierz Kot

Author(s):  
Márcio Araújo ◽  
Valter E. Beal ◽  
Armando Sá Ribeiro Júnior ◽  
Luis Antônio Gonçalves Junior

2020 ◽  
Vol 1 (2) ◽  
Author(s):  
Aditya Nugraha ◽  
Masri Bin Ardin

PVDF sensor is a sensor that is often used to measure force, strain, vibration and heat. In this study, PVDF sensors with surface polarization are used to detect cutting forces on the machine. The PVDF sensor that has been polarized on the surface is placed in the chuck part of the engine. Measuring instrumen for testing and calibrating PVDF sensors is oscilloscope with increased loading and reduced axial and tangential directions. After the calibration process, the PVDF sensor was used to measure cutting force on drilling machine, and then the results were compared with the PCB piezotronics force sensor. The PVDF sensor output signal is measured and studied for its voltage using an oscilloscope, where the output signal is compared to the weight given to the PVDF sensor. From the results of these tests indicate that the maximum deviation in axial loading is 0.32V while the tangential loading is 0.31VKeywords. PVDF sensor, Surface polarization, Drilling machine, Cutting force


Author(s):  
S.V. Povorov ◽  
D.V. Egorov ◽  
D.S. Volgin

The change in cutting force in the cutting process of roll-formed section in shaped dies-knife guillotine is studied. It is established that to calculate the cutting force in shaped guillotine, one can use formulas to determine the cutting force of sheet blank on conventional straight knives guillotine.


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