Analysis Of Maximum Temperature And Heat Generation Along The Cutting Tool During Machining

Norwadiah , Mohd Andai (2007) Analysis Of Maximum Temperature And Heat Generation Along The Cutting Tool During Machining. Project Report. UTeM, Melaka,Malaysia. (Submitted)

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Abstract

Determination of maximum temperature and research of the heat generation along the rake face of cutting tool is particular importance due to its controlling influence on tool life and also the quality of the machining parts. Numerous attempts have been made to approach the problem with different methods including experimental, analytica1 and also numerical analysis. Thus, the study is focussed to determine the temperature distribution along the rake face of the insert cutting tool and from the data, the analyze of the maximum temperature bas been done by using the plotted graph. The application of lathe machine bas been used to fulfill the project and the experiment concentrated in the insert carbide cutting tool which coated by Titanium Nitrite and the code number is WNMG080408E. The machining workpiece which has been used is mild steei-AlSI 1045. The speed machining of the experiment are; a) low speed machining is 185m/min, b) medium speed machining is 425 m/min and c) high speed machining is 1150 m/min. The feed of rate for the machining experiment has been set to be constant at 0.5mm while for depth of cut variable; it has been set to 0.5mm and l.Omm. The temperature value of the tool inserts were monitored at 30, 60, 90, 120, 150, 180, 210, 240, 270 and 300 seconds cutting times. The temperature measurement of the flank tip of insert cutting tool has been used radiation technique and the tool is the non-contact infrared thermometer. As the result, the point which is located nearest to the contact phenomena between the tool, the chip and the workpiece give higher temperature value rather than the other point at the rake face of insert cutting tool. The highest value for depth of cut is 0.5 mm is 40.25 oc (low speed machining 185 m/min), for the medium speed machining 425 m/mi.n is 51.25 oc and the value temperature in high speed machining 1150m/min is 87.25 °C. The highest value for depth of cut is 1.0 mm is 44.5 oc (low speed machining 185 m/mi.n), for the medium speed machining 425 m/min is 57.25 oc and the value temperature in high speed machining 1150m/min is 107.25 OC.

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