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FAG workpiece cutting temperature and its determination method
Source: China Bearing Network Time: 2018-03-24
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(1) The concept of cutting temperature is in the production of FAG imported bearings; the influence of cutting heat on the cutting process is expressed by the cutting temperature. The cutting temperature refers to the temperature of the cutting area during the cutting process.
(2) Determination of cutting temperature The determination of cutting temperature and the cutting temperature in the cutting of a chip-FAG imported bearing workpiece can be determined by theoretical calculation of heat conduction and temperature field; commonly used is measured by test method. Measuring method of cutting temperature Many; such as natural thermocouple method, artificial thermocouple method, thermal coloring method, thermal radiation method and far infrared method. The most convenient, simple and most commonly used in production practice is the use of natural thermocouple method. On the lathe The equipment for measuring the cutting temperature using the natural thermocouple method is shown in Figure 21. The working principle of the natural thermocouple method is: using the FAG imported bearing workpiece data and the chemical composition of the tool data to form the thermocouple's north and south poles. FAG imports The bearing workpiece and the touch area of ​​the tool cause the temperature to rise due to the effect of cutting heat to form a hot end; and the end of the tool and the leading end of the workpiece adhere to room temperature to form the cold end of the thermocouple. This is in the circuit between the tool and the workpiece. The thermoelectromotive force occurs. The electromotive force is recorded with a millivoltmeter or potentiometer. According to the pre-calibrated tool-workpiece thermocouple calibration curve; the average value of the cutting temperature on the touch surface of the tool and the FAG imported bearing workpiece can be measured.
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