公开(公告)号：EP0280738A4

公开(公告)日：1989-07-25

申请号：EP87905475

申请日：1987-08-21

申请人： FANUC LTD

发明人： ARAKI HIROSHI ,  ISHII HISAO ,  AKIYAMA YOSHIHISA ,  KAMADA HIROSHI ,  NAGATOMI TAKASHI

IPC分类号： B23Q3/157

CPC分类号： B23Q3/15706 ,  B23Q3/15534 ,  Y10T483/1795

摘要： In a tool exchange system, in which the selection of a tool (8) supported on a magazine (9) is done by the rotation of a main shaft (5) via a pair of gears (20, 21), an elastic member (71) is provided so as to retain the magazine (9) in a processing position (waiting position) which does not interfere with a processing operation, and a first cam means (11) adapted to move the magazine (9) between a tool exchange position and the processing position in response to the vertical movements of a Z-slider (3) moving along a column (1), and a second cam means (12) adapted to operate a tool setting and removing means (6) are added.

公开(公告)号：EP0749804A4

公开(公告)日：1998-03-04

申请号：EP95934851

申请日：1995-10-19

申请人： FANUC LTD

发明人： NAGATOMI TAKASHI ,  SAKAGUCHI MIWAKO

IPC分类号： B23B47/24 ,  B23Q17/09 ,  G05B9/02 ,  G05B19/18 ,  G05B19/4065

CPC分类号： G05B19/4065 ,  B23Q17/0961 ,  G05B2219/37246 ,  G05B2219/37344 ,  G05B2219/50205

摘要： A tool breakage detecting system adapted to detect the breakage of a tool with a high accuracy which occurs in some cases even when a load is not substantially imparted to a rotary shaft and a tool feed shaft. The disturbance load torque of a main shaft and a shaft for relatively moving a work and a tool is monitored by a rotary shaft disturbance load torque estimating means (1) and a moving shaft disturbance load torque estimating means (2), and also the disturbance load torque of a shaft which does not relatively move a work and a tool by stationary shaft disturbance load torque estimating means (3, 4). The breakage of the tool is judged by a comparison means (5) on the basis of the estimated disturbance load torque from these estimating means, and, when the breakage of the tool is detected, the machine is stopped by a machine stoppage command means (6).

公开(公告)号：EP0801339A4

公开(公告)日：1999-12-29

申请号：EP96935437

申请日：1996-10-24

申请人： FANUC LTD

发明人： FUJIMOTO AKIHIKO ,  NAGATOMI TAKASHI

IPC分类号： G05B19/4093 ,  G05B19/416

CPC分类号： G05B19/4166 ,  G05B19/416 ,  G05B2219/34175 ,  G05B2219/49363 ,  G05B2219/49365 ,  G05B2219/50109 ,  G05B2219/50117 ,  G05B2219/50385 ,  Y10T408/03 ,  Y10T409/30084 ,  Y10T409/303808 ,  Y10T409/306664

摘要： An axis movement method and an axis movement apparatus, in which the time required for non-cutting movement is reduced. Sections 2 and 5 are curved paths each starting in the same direction of the immediatly preceding path and a tool is accelerated to a speed for a rapid motion in the next path. The section 2 is succeeded by another curved path in which the tool is decelerated to a speed adapted to the next path. A quick axis movement can be completed within a short time without intermittent motions or shocks to the machine.

摘要翻译： 一种轴移动方法和一种轴移动装置，其中非切割移动所需的时间减少。 第2节和第5节是弯曲的路径，每个路径从与之前路径相同的方向开始，并且工具加速到下一路径中快速运动的速度。 部分2由另一个弯曲的路径继承，其中工具被减速到适应下一路径的速度。 快速移动可以在短时间内完成，无需间歇性移动或冲击机器。

公开(公告)号：EP0666138A4

公开(公告)日：1998-05-13

申请号：EP94913798

申请日：1994-04-21

申请人： FANUC LTD

发明人： NAGATOMI TAKASHI

IPC分类号： B23Q15/013 ,  B23Q17/09 ,  G05B19/18 ,  G05B19/19 ,  G05B19/4065 ,  B23Q15/12

CPC分类号： G05B19/4065 ,  G05B2219/37245 ,  G05B2219/41371 ,  G05B2219/41379 ,  G05B2219/50276

摘要： This invention provides a tool breakage prevention system which can easily and accurately detect an abnormal load and correctly prevents breakage of a tool. Even when tool breakage has already occurred, this tool breakage prevention system can suitably cope with such abnormality. First disturbance torque estimation means (1) estimates a disturbance torque Ys acting on a spindle motor (73) on the basis of a speed signal X1s of the spindle motor (73) and a torque instruction value U1a to the spindle motor (73). Second disturbance torque estimation means (2) estimates a disturbance torque Yz acting on the servo motor (63) for feeding on the basis of the speed signal X1z of the servo motor (63) and the torque instruction value U1z to the servo motor (63). Comparison means (3) combines the estimation disturbance torques Ys and Yz to determine a combined disturbance torque Y, and compares it with a reference torque Ye set in advance. Deceleration/stop instruction means (4) outputs an instruction signal to decelerate, or replace the tool depending on the result of comparison.