Factors influencing cutting force in tobacco stem cutting tests

2014 ◽  
Vol 39 (2) ◽  
pp. 213-216 ◽  
Author(s):  
Kui CHEN ◽  
Song-lin SUN ◽  
Jun-zheng LI ◽  
Qian TAN ◽  
Ming-tao XIAO ◽  
...  
2009 ◽  
Vol 69-70 ◽  
pp. 413-417
Author(s):  
Z.H. Wang ◽  
Jun Tan Yuan ◽  
X.Q. Hu ◽  
X.W. Xiong

Cutting force is a key factor influencing the machining deformation of weak rigidity workpieces. In order to reduce the machining deformation and improve the process precision and the surface quality, it is necessary to study the factors influencing the cutting force and build the regression model of cutting forces. Firstly, the cutting parameters influencing cutting force are analyzed for LF21. Secondly, how certain cutting parameter influence the cutting component forces (Fx, Fy, Fz) are studied by the correlation analysis and the approach to choosing the right cutting parameters for machining the weak rigidity workpieces are presented. Finally, the regression model of cutting forces based on the cutting parameters is investigated in this paper.


2011 ◽  
Vol 291-294 ◽  
pp. 804-809 ◽  
Author(s):  
Bo Huang ◽  
Zeng Wen Liu

The cutting force is the key factors influencing the processing precision and efficiency in special-shaped stone production. In this research, the cutting force is measured and analyzed in the process of special shaped cutter cutting stone. It is found that the relationship of cutting force with peripheral speed of cutter is nearly inverse proportional. The cutting force becomes smaller and smaller as the peripheral speed of cutter increases. The relationship of cutting force with feed rate is nearly proportional. The cutting force becomes larger and larger as the feed rate increases. The relationship between Fx, Fy and Fz is Fz > Fx > Fy. Enhancing the peripheral speed of cutter is a better way to increase the material removal rate.


Author(s):  
R.A. Popov ◽  
◽  
I.L. Abramov ◽  

The interaction of a knife with a stalk of industrial hemp in the process of unsupported cut is described. An analytical dependence of the critical cutting force on the physicomechanical properties of the stem and blade geometry is obtained. The factors influencing the shape of the cutting tooth are analyzed. The profiles of cutting segments have been developed taking into account the peculiarities of the structure of the industrial hemp stem.


Author(s):  
Julie A. Martini ◽  
Robert H. Doremus

Tracy and Doremus have demonstrated chemical bonding between bone and hydroxylapatite with transmission electron microscopy. Now researchers ponder how to improve upon this bond in turn improving the life expectancy and biocompatibility of implantable orthopedic devices.This report focuses on a study of the- chemical influences on the interfacial integrity and strength. Pure hydroxylapatite (HAP), magnesium doped HAP, strontium doped HAP, bioglass and medical grade titanium cylinders were implanted into the tibial cortices of New Zealand white rabbits. After 12 weeks, the implants were retrieved for a scanning electron microscopy study coupled with energy dispersive spectroscopy.Following sacrifice and careful retrieval, the samples were dehydrated through a graduated series starting with 50% ethanol and continuing through 60, 70, 80, 90, 95, and 100% ethanol over a period of two days. The samples were embedded in LR White. Again a graduated series was used with solutions of 50, 75 and 100% LR White diluted in ethanol.


1965 ◽  
Vol 8 (4) ◽  
pp. 323-347
Author(s):  
Robert Goldstein ◽  
Benjamin RosenblÜt

Electrodermal and electroencephalic responsivity to sound and to light was studied in 96 normal-hearing adults in three separate sessions. The subjects were subdivided into equal groups of white men, white women, colored men, and colored women. A 1 000 cps pure tone was the conditioned stimulus in two sessions and white light was used in a third session. Heat was the unconditioned stimulus in all sessions. Previously, an inverse relation had been found in white men between the prominence of alpha rhythm in the EEG and the ease with which electrodermal responses could be elicited. This relation did not hold true for white women. The main purpose of the present study was to answer the following questions: (1) are the previous findings on white subjects applicable to colored subjects? (2) are subjects who are most (or least) responsive electrophysiologically on one day equally responsive (or unresponsive) on another day? and (3) are subjects who are most (or least) responsive to sound equally responsive (or unresponsive) to light? In general, each question was answered affirmatively. Other factors influencing responsivity were also studied.


1950 ◽  
Vol 16 (1) ◽  
pp. 194-210 ◽  
Author(s):  
Frederick W. Hoffbauer ◽  
Jesse L. Bollman ◽  
John L. Grindlay

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