INCREASING THE MACHINING PRODUCTIVITY OF THE MORTAR BREECH THROUGH AUTOMATED TOOL SELECTION

In the study, an automated selection of cutting tools and cutting parameters was performed for the turning of the breech component of the stationary smoke mortar of the AEK-902 “Khmara” aerosol system. The AEK-902 is actively used by the Armed Forces of Ukraine to create a dense smoke screen in order to conceal military equipment from enemy visual, infrared, and thermal detection systems. The breech is a critical mortar component subjected to significant mechanical and thermal loads during operation, which imposes high demands on the quality of its manufacturing, geometric accuracy, and wear resistance. An automated selection of cutting tools and cutting parameters for each turning operation of the breech was carried out using specialized software from two leading global manufacturers of cutting tools: Walter GPS (Walter company) and Sandvik Coromant ToolGuide (Sandvik Coromant company). The selection was made taking into account the type of machining, the geometry of the workpiece, material characteristics, and the requirements for accuracy and surface quality. As a result, a nomenclature of tooling (toolholder and insert types) recommended for each specific turning operation was obtained, as well as productive cutting parameters. For operation 010, the following set of cutting tools is proposed: DSSNL2020K12 turning tool with SNMG120416-PR4335 insert, 462.1-1850-056A1-XM-X2VM drill, DCLNL2525M19 turning tool with CNMG190608-PR4335 insert, A12M-STFCL11 boring tool with TCMT110208-UM4335 insert, A25T-SSKCL12 turning tool with SCMT120412-PR4425 insert. For operation 020, the following tool set is proposed: DCLNL2525M19 turning tool with CNMG190608-PR4335 insert, A16R-SSKCL09 and A25T-SSKCL12 boring tools with SCMT09T308-PR4425 inserts, C2R-CE25-L-J08GB and C2R-CE25-LH07GB grooving tools with corresponding inserts C2I-J2N-0500-0004-TF1225 and C2I-J2N-0400-0004-TF1225, as well as L166.0KF-16-1220-11B threading tool with L166.0L-11MM01-200 1020 insert and 266LKF-20-16 threading tool with 266LL-16MM01A200M 1125 insert.