Abstract:
PROBLEM TO BE SOLVED: To provide a method for forming a work by an NC machine tool, in which an origin on a coordinate set by a program can be easily selected and specified. SOLUTION: In the method, before the work is formed by the NC machine tool, two points are selected on a surface of the work to be formed. Four points are selected which are located at a central position of the two points or on the surface of the work and on the same plane. Numerical information in which a position of an intersection of diagonal lines for connecting the two points which are not adjacent to each other in an arrangement relation may be set as the origin of the coordinate previously set by the program is inputted to a computer related to an operation of the program. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To effectively use, while paying attention to presence of a switch for producing supply of power for emergency, the switch even in the end stage of all the operation processes, when controlling an NC machine tool. SOLUTION: There is provided a method for controlling supply and disconnection of the power. In the method, the NC machine tool is not provided with any switch exclusive for performing the supply and disconnection of a power to all the drive motors involved in machining and conveyance, and a central controller transmits the disconnection command of power supply to all the drive motors to an emergency switch for disconnecting the supply of the power from a power supply to all the drive motors in emergency, and for supplying the power from the power supply in any stage other than emergency, in a stage where all the operation processes of the NC machine tool end. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To avoid such a state that power is always supplied to a servo motor as a drive source in a stage where a tool carrier and/or a pallet carrier are not operated. SOLUTION: In a tool and/or pallet carrying system in which each operation of a tool and/or pallet carrier using the servo motor as the drive source is controlled by a central controller with respect to a machine tool, when the tool carrier and/or pallet carrier are not operated for a prescribed time or more, a power supply to the servo motor of the carrier is turned off, and the brake of the gravity shaft of the carrier is turned on, and the power supply to the servo motor is turned on in a stage where a further operation command from the central controller is transmitted to the servo motor, and the brake of the gravity shaft is released. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a cutting method which includes a rough work stage and a finishing work stage and makes a cutting efficiency compatible with a cutting accuracy in a cutting operation by a rotation of a tool. SOLUTION: In a cutting method by the rotation of the tool, a feed speed of a rotating spindle to the tool is sequentially reduced by the divisions of two or three stages up to a final work surface. Depending on any of a mold work, a parts work and a simultaneous five-axes work as a kind of the work, the feed speed of the necessary stage is suitably selected. COPYRIGHT: (C)2011,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a structure of a tool exchange system capable of preventing waiting time from occurring as much as possible in an arrangement of an intermediate magazine of a smaller capacity than conventional technology. SOLUTION: A program relating to the order of activation of tools 7 to be activated and their operating time is set in the tool exchange system. When the operating time of an individual tool 7 is shorter than conveyance time by reciprocation of a tool conveyor 3 between a tool magazine 1 and a tool exchange arm 4, at least a part of tools 7 expected to activate in a subsequent step to the tool 7 (referred to as "a tool requiring waiting time") can be arranged on an intermediate magazine 5, and thereafter it can be transferred to the tool exchange arm 4. Thus, the tool exchange system can solve the problem. COPYRIGHT: (C)2010,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a method of correcting imbalance of torque occurring in a workpiece 1 during rotation of the same without performing corrective machining (without incurring damage) of the workpiece. SOLUTION: According to the method of detecting and correcting an imbalance amount of torque occurring in the workpiece 1 as a machining object during rotation, a balance table 3 which is rotatable together with the workpiece 1 as one body, is detachably set on the workpiece 1, and an angular direction corresponding to a minimum imbalance value of the torque is set in the balance table 3, followed by adding a weight in the set angular direction or in the vicinity of the direction. Alternatively an area in the angular direction corresponding to the minimum imbalance value of the torque or an area in the vicinity of the direction is cut. In this manner the imbalance of the torque occurring in the workpiece 1 can be corrected. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an oscillation state detection method capable of detecting an oscillation state based on a common device, and eliminating arrangement of a detection device for every machining tool. SOLUTION: A deviation allowance and a deviation average speed corresponding to each cycle of a work and/or tool by loading the work and/or tool 1 on the prescribed rotating apparatus 2 are measured by either of optically or electromagnetically or measured by both of them. The deviation allowance and/or deviation average speed measured by the rotating apparatus under common unbalance amount and rotational speed, oscillation amplitude and/or oscillation average speed, and proportional constant for the both when rotating each machine tool in which the work and/or tool is loaded are set by previous test in advance, the oscillation amplitude and/or oscillation average speed corresponding to each cycle when the work and/or tool is loaded on the machine tool is calculated using a measured value of the deviation width and/or deviation means speed and the proportional constant when the rotating device is used to achieve the purpose. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a tool replacement system, achieving efficient replacement of a tool 3 by improving the relationship between the movement of a spindle 1 and the rotation of a tool replacement arm 2. SOLUTION: In this tool replacement system, the tool 3 to be engaged with the spindle 1 is replaced by moving the spindle 1 and rotating the tool replacement arm 2. The time required for replacement of the tool is reduced: by a tool replacement system (1) in which the period of time when the tool 3 and the spindle 1 before replacement are moved from the machining position to the position for replacing the tool 3 and the period of time when the tool replacement arm 2 is rotated from the home position in the static state to the position for replacing the tool 3 are at least partially in common; and by a tool replacement system (2) in which the period of time when the tool 3 and the spindle 1 after replacement are moved to return from the position for replacing the tool 3 to the machining position and the period of time when the tool replacement arm 2 is moved to return from the replacement position to the original home position are at least partially in common. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To set a standard regarding an operation state or a release state of a brake in operation of a machining center. SOLUTION: For occurrence of an emergency stop signal or power supply disconnection during operation of the machining center, in a machining mode, a brake is released for a first spindle 1 and a brake is kept operated for a second spindle 2, while in a turning mode, the brake is operated while the brake is kept released for the second spindle 2, and in a grinding mode, the brakes are released for both the first spindle 1 and the second spindle 2. COPYRIGHT: (C)2007,JPO&INPIT