Determining method and determining system for instantaneous temperature of front cutter face of integral type flat-end milling cutter

Abstract

The invention discloses a determining method and determining system for instantaneous temperature of a front cutter face of an integral type flat-end milling cutter. The determining method comprises the following steps of establishing a model of an instantaneous contact angle between the milling cutter and a workpiece; establishing an undeformed chip thickness model under the conditions that the milling cutter and the workpiece do not deform or vibrate and a cutting edge cuts in from a position at a distance from a processed surface during milling of each time; calculating the undeformed chipthickness according to the undeformed chip thickness model; establishing a temperature field model of generating a temperature rise influence on the front cutter face of the milling cutter by a firstdeformed zone heat source; establishing a temperature field model of generating a temperature rise influence on the front cutter face of the milling cutter by a second deformed zone heat source; and calculating the instantaneous temperature of the front cutter face of the milling cutter according to a first temperature field model, a second temperature field model and a temperature field model ofthe front cutter face of the milling cutter. By establishing the temperature field models of the first deformed zone heat source and the second deformed zone heat source, the accuracy of monitoring the temperature of the milling cutter during milling is enhanced.

Description

technical field [0001] The invention relates to the field of integral flat end mills, in particular to a method and system for determining the instantaneous temperature of the rake face of an integral flat end mill. Background technique [0002] Titanium alloys have good specific strength, specific stiffness, heat resistance, and corrosion resistance, and are widely used in aviation, aerospace, energy, construction, and military fields. The thermal conductivity of titanium alloy is low, so when milling titanium alloy, a large amount of cutting heat will be generated between the milling cutter and the titanium alloy workpiece, which will instantly cause the temperature of the milling cutter to rise sharply, thereby aggravating the wear of the milling cutter. The change of cutting temperature will directly affect the quality and machining accuracy of the workpiece surface, so the research on milling cutter temperature is particularly important. [0003] In the prior art, a pr...

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Problems solved by technology

[0004] According to the current research status of tool temperature modeling in mechanical processing, the research work mainly focuses on the temperature modeling of indexable milling cutters with the characteristics of intermittent machining, and does not involve the modeling of the transient temperature field of the rake face of helical end mills. Relevant studies cannot accurately determine the temperature field on the rake face of the milling cutter

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