A tool path optimization method for controlling cutting force and cutting temperature

Abstract

The invention discloses a tool path optimization method for controlling cutting force and cutting temperature, and belongs to the technical field of material processing. The optimization method comprises the steps of judging whether the cutting force and the cutting temperature calculated at all sampling points on a cutting path are overlarge according to a G code, and if overlarge, generating different optimization cutting paths according to different cutting types. The method can protect a tool from being broken due to overlarge cutting force caused by overlarge cutting depth and width during processing; the processing temperature is indirectly controlled by controlling the cutting depth and width, so that a tool sticking phenomenon is prevented; a machine tool is better protected and the processing precision is improved; the extreme cutting condition is reduced, abrasion of the tool is reduced, and the service lives of the machine tool and the tool are prolonged.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to a tool trajectory optimization method for preventing excessive cutting force and cutting temperature during milling. Background technique [0002] In the NC machining process, the tool trajectory generated by the geometric model generally does not consider the physical information in the machining process such as cutting force and cutting temperature in the cutting process. In some machining positions, due to excessive cutting depth and cutting width, the The cutting force and cutting temperature are too high, so the phenomenon of broken tool, tool wear, sticking tool, machine tool damage, and reduced machining accuracy may often occur in actual processing. Therefore, optimize the cutting trajectory in the processing process to reduce the cutting depth or cutting width of the original cutting position to ensure that the cutting force and cutting temperatur...

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Problems solved by technology

[0003] The tool trajectory generated by the existing part model generally only considers the shape information of the model, and does not fully consider the processing process. Excessive cutting amount at some positions will cause various problems in the processing process, such as causing tool breakage and machine tool damage. Wait

[0004] The existing cutting simulation optimization technology generally only stays on the control of the feed speed of the tool trajectory, and optimizes by controlling the material removal rate, but this cannot reduce the excessive cutting width or cutting depth at some positions in the trajectory. It may cause the physical quantities such as cutting force and cutting temperature during the cutting process to be out of reasonable range, and the tool trajectory cannot be re-planned to generate a more reasonable tool trajectory

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