Abstract
The aim of the research was to analyze the wear of the end mills based on the measurement of mechanical vibration accelerations. The VBB index was used as the tool wear criterion, which was measured until a specific maximum wear was obtained. The paper compares the tool wear values at different cutting speeds and determines the possibility of predicting the state of the tool wear based on the measurements of mechanical vibration accelerations.
Highlights
Metal-ceramic composites are construction materials, the matrix of which is usually a soft and ductile casting alloy or aluminum alloy for plastic forming, while the reinforcement has the form of hard and brittle ceramic particles
Assessment of sizes that correlate with tool wear is important, because it allows for the tool change before catastrophic failure occurs
Dependence of VBB tool wear as a function of cutting time ts One additional test with cooling lubricant was carried out for the maximum selected cutting speed vc = 900 m/min to compare tool life
Summary
Metal-ceramic composites (metal matrix composites, MMC) are construction materials, the matrix of which is usually a soft and ductile casting alloy or aluminum alloy for plastic forming, while the reinforcement has the form of hard and brittle ceramic particles. Due to their structure, such composites belong to the group of hardto-machine materials, and due to their mechanical properties, they are used in the aviation, shipbuilding and automotive industries. Assessment of sizes that correlate with tool wear is important, because it allows for the tool change before catastrophic failure occurs This is extremely important when machining difficult-to-cut materials, since the tool life is much lower compared to other construction materials. The purpose of the research was to analyze the state of the diamond-coated end mills based on the measurement of vibration during milling of metal-ceramic composite with different cutting speeds: 500, 700 and 900 m/min
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