Spatial Distribution of Cooling Mist for Precision Grinding

Abstract

In order to enhance the cooling performance, better understanding of the effects of coolant parameters is necessary. In this project, a total of five input parameters for actively cooled and activated cutting fluid were studied. An aerosol spectrometer was used to measure the particle size spatial distribution of the cooling mist in the fluid. Taguchi method was used in the design of experiments. It was found that the unit volume net specific particle counts exhibit the behavior of oscillation and attenuation of a second order dynamic system. Cooling mist particle spatial frequency ranges from 0.01269/μm to 2.5/μm, the weighted average size ranges from 0.3051μm to 3.714μm and the particle size difference for 99.8% count attenuation ranges from 0.5μm to 19.7μm. The order of importance of the input parameters was studied and the coolant concentration was found as the most important input parameter for the unit volume net particle counts.

Review on grinding-induced residual stresses in metallic materials

“…Additionally, Gao et al [147][148][149] developed an active cooling and activation approach for coolant, which was more advantageous on reducing the grinding temperature and therefore obtaining lower surface residual stress in comparison with the passive coolant cooling method.…”

A Preliminary Study of Variable Strength Activation of Coolant for Precision Machining

“…Our objective to use variable strength activation is to allow better machining heat transfer through mist evaporation [14]. For this objective, multiple actuators are used to avoid saturation (Fig.…”

“…A number of methods have been proposed for cooling [3][4][5][6][7][8][9][10]. For increased cooling effectiveness, active cooling and activated cooling have been proposed and examined [11][12][13][14][15][16].…”

Test of Focusing and Superposition for Variable Strength Activation of Coolant in Precision Machining

“…So far, a number of cooling methods have been proposed [3][4][5][6][7][8][9][10][19][20]. For increased cooling effectiveness, active cooling and activated cooling have been proposed and examined [11][12][13][14][15][16].…”

“…To allow better machining heat transfer through mist evaporation [16], a new active cooling method is proposed [17][18]. It is based on variable strength activation of coolant together with active cooling.…”