摘要:
A machining simulation is performed on a graphic data basis prior to machining. Machining simulation means (17) simulates a forced-vibration frequency and/or a load variation frequency occurring due to interrupted cutting on the basis of machining information, and numerical control command generating means (18) generates a numerical control command on the basis of the frequencies obtained from the machining simulation means (17). A spindle rotation speed can be reflected on the actual machining and the generation of a machining program under conditions optimum for the actual machining. Therefore, the interrupted-cutting forced-vibration frequency and/or load variation frequency, or harmonic frequencies thereof which are integral multiples thereof are prevented from being close to the natural frequency of a machine, a tool, a jig or a workpiece. Thus, chattering due to resonance can be prevented, thereby improving a surface accuracy.
摘要:
A method and device to automatically determine the operation balance of processing/assembly machines such as NC machine tools. The device detects the machine operations related to income and expenditure as income/expenditure data and stores the income and expenditure amounts in a memory based on the detected income/expenditure data and calculates the income/expenditure balance of the individual machines for an arbitrary period based on the stored income and expenditure amounts. In the NC machine tool, the operations related to the income and expenditure can be detected while monitoring the execution statuses of the NC program. By calculating the income/expenditure amounts with multiplication of such operations by the predetermined unit prices of income or expenditure and subtracting the expenditure amount from the income amount, the operation balance of the machine for each cycle or every week or month can be determined.
摘要:
The spindle device 1 is provided with: a housing 10 formed with a support hole 10a; a spindle 12 which is supported to rotate freely about an axis within the support hole 10a of the housing 10 and of which distal end is attached with a tool T; a drive motor 20 for rotating the spindle 12 about the axis, the drive motor 20 being configured by a rotor 22 arranged to rotate freely on an outer circumferential surface of the spindle 12 and a stator 23 fixedly provided on an inner circumferential surface of the support hole 10a of the housing 10; an electromagnetic clutch 30 for transmitting intermittently a drive force of the drive motor 20 to the spindle 12; and a controlling device 40 for controlling an operation of the drive motor 20 and that of the electromagnetic clutch 30.
摘要:
A pump control device for a pump device having a DC brushless motor as a drive source and a flow rate of the pump device is increased and decreased depending on a corresponding increase and decrease of a rotational speed of the DC brushless motor is structured so that, when the rotational speed of the DC brushless motor is higher than a predetermined speed, the DC brushless motor is controlled in an open loop control and, when the rotational speed of the DC brushless motor is lower than the predetermined speed, the DC brushless motor is controlled in a closed loop control on the basis of a measurement result of an actual rotating speed which is an actual rotational speed of the DC brushless motor.
摘要:
A machine tool includes a time calculation unit calculating the time for a spindle to arrive at a target rotational speed, and the time for a spindle head to arrive at a target position; a comparison unit comparing the time to arrive at the target rotational speed and the time to arrive at the target position; and a drive control unit controlling the drive of the spindle and the drive of the spindle head. The drive control unit controls the drive of the spindle head, when a determination is made that the time to arrive at the target rotational speed is longer than the time to arrive at the target position, such that the time for the spindle head to arrive at the target position is longer than the calculated time to arrive at the target position, and less than or equal to the calculated time to arrive at the target rotational speed. Accordingly, the machine tool can drive the spindle head that is a control object in a power-saving mode.
摘要:
A machining status monitoring apparatus is provided on a machine tool, and has a plurality of actual CCD cameras for imaging the tool and workpiece from different view points and generating actual two-dimensional image data thereof, a virtual image generating section having a plurality of virtual CCD cameras corresponding to the actual CCD cameras, in which the tool and workpiece of three-dimensional model are imaged by the virtual CCD cameras from each point and virtual two-dimensional image data thereof are generated, and a display control section for selecting one virtual CCD camera corresponding to the virtual two-dimensional image data in which the distal end of the tool is not hidden by the workpiece among the generated two-dimensional image data, and displaying the actual two-dimensional image data generated by the actual CCD camera corresponding to the selected virtual CCD camera on a display device.
摘要:
An apparatus 1 for generating three-dimensional model data is provided with: two CCD cameras 13 and 14 for imaging an attached object attached to a machine tool to generate two-dimensional image data; a first model-data storing section 19 for storing model data of the attached object, a second model-data storing section 21 for storing the model data related to at least a part of the machine tool; an edge detecting section 17 for detecting edges; a shape-feature recognizing section 18 for recognizing a shape feature; an object recognizing section 20 for recognizing the model data of the attached object imparted with the recognized shape feature; and a model-data generating section 22 for generating three-dimensional model data including the attached object and a part of the machine tool.
摘要:
A feed apparatus has a ball screw, a nut, a drive motor, a braking mechanism and a controller and moves a movable body vertically. When recognizing a movement command for rapid traverse relating to the movable body, the controller, when the movable body is to be moved upward, moves the movable body past a target position according to the movement command and then reverses the moving direction thereof and moves the movable body to the target position and stops it there, and, when the movable body is to be moved downward, moves the movable body directly to the target position and stops it there. After moving the movable body to the target position and stopping it there, the controller causes the drive motor to keep the position of the movable body at the stop position and causes the braking mechanism to brake the movement of the movable body.
摘要:
Relative movement in X, Y and Z axis directions is made between a main spindle and a table 6 for application in a machine tool in which a work is machined. An emitting element 12 for irradiating laser beam 11 and a photosensitive element 13 are disposed on the table 6. A measuring tool 8 with its top end being shaped as a cone form is attached to the main spindle 4. The laser beam 11 is interrupted with the cone form portion 15 of the measuring tool 8 through relative movement between the table 6 and measuring tool 8 before and after machining a work. Detection signal of interruption is generated at the moment of interruption, position is detected, operation processing is performed so that difference in X, Y and Z axes before and after machining is obtained along with values for correction. Positional coordinate values for three axis directions are detected simultaneously with a measuring device of a simple constitution by use of laser beam and values for correction such as of thermal displacement is obtained by operation processing of displacement values.
摘要:
A motor may include a motor base plate, a bearing holder provided with a through hole whose both ends hold bearings and vertically disposed with respect to the motor base plate, a stator provided with a center hole and fixed to an outer peripheral face of the bearing holder, and a rotor having a shaft supported by the bearings, a rotor case fixed to the shaft, and a magnet fixed on an inner peripheral face of the rotor case. The bearing holder may be provided with a stepped part, protruded toward a radial direction. The stator may be provided with a first resin block structured so that an end face on a motor base plate side of the stator core is molded with resin to cover a coil wound around the stator core, and inner peripheral faces of the stator core and the first resin block structure the center hole, and the center hole of the stator is press-fitted and fixed to the bearing holder until an end face of the first resin block is abutted with the stepped part.