Machine tool and control device

• Main Authors: SAITO HITOSHI, NOGUCHI KENJI
• Format: Patent
• Language: English; Korean
• Published: 01.12.2023
• Subjects: BORING; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOTDIRECTED TO A PARTICULAR RESULT; CONTROL OR REGULATING SYSTEMS IN GENERAL; CONTROLLING; DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g.ARRANGEMENTS FOR COPYING OR CONTROLLING; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MACHINE TOOLS; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OFPARTICULAR DETAILS OR COMPONENTS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS ORELEMENTS; PERFORMING OPERATIONS; PHYSICS; REGULATING; TRANSPORTING; TURNING

공작물(W)과 공구(130)를 서로 상대 회전시킨 상태에서 이송방향으로 상대 이동시키면서 공작물(W)의 축심에 수직인 방향으로 상대적으로 진동시켜 공구(130)에 의한 공작물(W)의 진동절삭가공을 수행함과 동시에 진동절삭가공을 수행한 후에 공작물(W)과 공구(130)를 진동시키지 않고 서로 상대 회전시키면서 이송방향으로 상대 이동시켜 공작물(W)의 마무리대를 공구(130)로 절삭하는 마무리 절삭가공을 수행하는 공작기계(1) 및 그 제어장치(C)에 있어서, 진동절삭가공을 수행하기 전에 마무리대 산출수단(C2)으로 진동절삭가공을 실행한 때에 공작물(W)에 남는 마무대를 산출하고, 판정수단(C3)으로 마무리대 산출수단(C2)에 의해 산출된 마무리대가 소정의 역치 이하인지 아닌지를 판정한다. A machine tool (1) and a control device (C) therefor, wherein vibration cutting of a workpiece (W) is carried out by means of a tool (130), by relatively vibrating the workpiece (W) and the tool (130) in a direction perpendicular to an axial center of the workpiece (W) while relatively rotating the workpiece (W) and the tool (130), and relatively moving them in a feed direction and wherein, after the vibration cutting, finish-cutting is carried out for cutting a finishing allowance of the workpiece (W) by means of the tool (130), without relative vibration between the workpiece (W) and the tool (130), by relatively rotating the workpiece (W) and the tool (130) and relatively moving them in the feed direction and. According to the invention, before the vibration cutting, a finishing allowance calculation means (C2) calculates a finishing allowance remaining on the workpiece (W) after vibration cutting has been completed, and a determination means (C3) determines whether or not the finishing allowance as calculated by the finishing allowance calculation means (C2) is less than, or equal to a predetermined threshold value.