Abstract: The present invention provides a machining state checking apparatus and method for checking whether a workpiece mounted on a machine tool and a workpiece fixture are shifted. A machining state checking apparatus has an actual CCD camera for imaging a workpiece fixed on a machine tool and a workpiece fixture and generating actual two-dimensional image data thereof, a virtual image generating section for generating virtual two-dimensional image data of the workpiece and workpiece fixture based on data on three-dimensional models of the workpiece and workpiece fixture, a comparing section for comparing the actual two-dimensional image data and virtual two-dimensional image data generated by the actual CCD camera and the virtual image generating section, respectively, and determining whether they match each other by comparing the portions corresponding to the workpiece and workpiece fixture in the actual two-dimensional image and the virtual two-dimensional images of the workpiece and workpiece fixture.

Abstract: 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.

Abstract: The present invention relates to an apparatus for generating three-dimensional model data or the like, capable of correctly and efficiently generating three-dimensional model data including an attached object attached to a machine tool and a part of the machine tool.

Abstract: 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.

Abstract: The present invention relates to an apparatus for confirming three-dimensional model data or the like, capable of confirming easily, efficiently, and precisely whether three-dimensional model data including an attached object attached to a machine tool and at least a part of the machine tool good are accurate.

Abstract: 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.

Abstract: The present invention relates to an accuracy analyzing apparatus which is capable of efficiently analyzing accuracies of a machine tool including the perpendicularity of a spindle axis and the thermal displacement of a spindle with a higher level of accuracy at lower costs. The accuracy analyzing apparatus (1) comprises a laser oscillator (2) attached to the spindle (26) for emitting a laser beam having a light axis perpendicular to the spindle axis, an imaging device (5, 8) having a light receiving section (5) disposed in the vicinity of the laser oscillator (2) for receiving the laser beam from the laser oscillator (2) by the light receiving section (5) and generating two-dimensional image data, and an analyzer (15) for analyzing the accuracies of the machine tool (20) on the basis of the generated image data.

Abstract: Operational administration system enabling reduction in expense burden on user, and permitting manufacturer to comprehend accurately and timely operational status of machine tools on user end. Operational administration system (1) includes, interconnected via Internet (5): manufacturer-end administration device (20); operational data storage/transmission devices (10) connected to numerical controllers for NC machine tools (15); and user-end terminal device (30). The operational data storage/transmission devices (10) gather from the numerical controllers data pertaining to the operational status of the NC machine tools (15), store the data and, when specified transmission conditions are met, send the stored operational status data to administration device (20) in an e-mail data format.

Abstract: Operational administration system enabling reduction in expense burden on user, and permitting manufacturer to comprehend accurately and timely operational status of machine tools on user end. Operational administration system (1) includes, interconnected via Internet (5): manufacturer-end administration device (20); operational data storage/transmission devices (10) connected to numerical controllers for NC machine tools (15); and user-end terminal device (30). The operational data storage/transmission devices (10) gather from the numerical controllers data pertaining to the operational status of the NC machine tools (15), store the data and, when specified transmission conditions are met, send the stored operational status data to administration device (20) in an e-mail data format.

Abstract: An accuracy analyzing apparatus 1 comprises: a light projector 2 attached to a main spindle 26 for emitting a light beam having a light axis coaxial with the axis of the main spindle 26; a semitransparent mirror 3 which transmits part of the emitted light beam and reflects other part; a first imaging device 4a for receiving the transmitted light beam; a second imaging device 4b for receiving the reflected light beam; and an analyzer 10 which calculates light receiving positions in the first and second imaging devices 4a and 4b, which estimates the light receiving position where the reflected light beam is to be received by the second imaging device 4b in the case where it is assumed that the axis of the main spindle 26 coincides with the first axis, and which compares the estimated light receiving position with the calculated light receiving position to analyze the perpendicularity of the axis of the main spindle 26.

Abstract: An authentication system includes a mail server (11) which receives an electronic mail delivered from a customer's machine tool (20), an operation state database (12) which stores operation state data extracted from the received electronic mail, a web server (13) which transmits specific operation state data to a customer's user PC (21) from the operation state database (12), a general identification database (14) in which general user IDs and passwords for identification of customers and machine codes of customers' machine tools (20) associated with the general user IDs are registered, a private server (15) which is accessible only by a service center PC (17) via a virtual private network, and a special identification database (16) in which special user identification data for identification of a service person and machine codes of all the customers' machine tools associated with a special user ID are registered.

Abstract: The present invention relates to an accuracy measuring apparatus which is capable of efficiently measuring the accuracies of a machine tool at low costs. The accuracy measuring apparatus (1) comprises a laser oscillator (2) attached to a spindle (15) of the machine tool (10) for projecting a light beam having an axis aligning with the axis of the spindle, a CCD camera (3) disposed in opposed relation to the laser oscillator (2) for receiving the light beam projected from the laser oscillator (2) and generating two-dimensional image data, and an analyzer (4) for analyzing the image data to determine the accuracies of the machine tool (10).

Abstract: The invention relates to a maintenance system for machine tool. In the maintenance, system 1, a user management apparatus 10 connected to a numerical control section of a machine tool 15, and a manufacturer management apparatus 20 disposed on a side of a manufacturer are connected to each other via Internet 5. The user management apparatus 10 collects data relating to an operating condition of each driving mechanism of the machine tool 15, and accumulates the data. When a predetermined transmission condition is satisfied, the user management apparatus 10 transmits the accumulated operating condition data to the manufacturer management apparatus 20 in the form of an electronic mail. The manufacturer management apparatus 20 evaluates the consumption degree of each driving mechanism based on the received operating condition data, and outputs an alarm when the consumption degree exceeds a reference value.

Abstract: The present invention relates to a performance evaluation system constructed to efficiently collect and accumulate analysis conditions for use in three dimensional model analysis. The performance evaluation system 50 is constructed by connecting a plurality of performance evaluation apparatuses 1 provided in each machine tool to a management apparatus 52 via a network 51. Each performance evaluation apparatus 1 comprises an analysis data storing section 12 in which model data and condition data are stored, a detecting device 4 which detects actual performance, an analyzing section 13 which analyzes the performance, an evaluation determining section 15 which evaluates the correctness of the analyzed performance data, and a data updating section 16 which changes and updates the model data and the condition data. The management apparatus 52 comprises an analysis data accumulating section 61 which accumulates the model data and condition data received from the performance evaluation apparatus 1.

Abstract: The invention relates to a maintenance system for machine tool. In the maintenance system 1, a user management apparatus 10 connected to a numerical control section of a machine tool 15, and a manufacturer management apparatus 20 disposed on a side of a manufacturer are connected to each other via Internet 5. The user management apparatus 10 collects data relating to an operating condition of each driving mechanism of the machine tool 15, and accumulates the data. When a predetermined transmission condition is satisfied, the user management apparatus 10 transmits the accumulated operating condition data to the manufacturer management apparatus 20 in the form of an electronic mail. The manufacturer management apparatus 20 evaluates the consumption degree of each driving mechanism based on the received operating condition data, and outputs an alarm when the consumption degree exceeds a reference value.

Abstract: An operation management system 1 according to the present invention is configured so as to connect an operation data accumulation and transmission device 10 connected to an NC unit 16 to an operation management device via telecommunication circuits 20. The operation data collection and transmission device 10 collects data on an operating condition of a machine tool 15 to store the same in an operation data storage section 12, and based on the accumulated operating condition data, generates transmit data with a configuration for associating a data-element identifier which defines an item concerning operating condition with operating condition data corresponding to this item to transmit the same to the operation management device. The operation management device analyzes the data-element identifier of the received data, recognizes the operating condition item and updates the operating condition data in databases corresponding to the recognized item by the received operating condition data.

Abstract: The invention concerns a feed system control method and apparatus that can calculate an accurate backlash amount and can accomplish highly precise position control. Position errors are calculated before and after a reversal in direction of movement of a slide 30, each from the difference between the position data of the slide 30 detected by a linear scale 25 and the position data of the slide 30 calculated from the rotational position data of the servo motor 23 detected by a rotary encoder 24. The backlash amount of the slide 30 is calculated from the difference between the position error before the reversal and the position error after the reversal thus calculated. Thereafter, when reversing the direction of movement of the slide 30, the feed speed during direction reversal is increased in accordance with the backlash amount.

Abstract: The present invention relates to an offset apparatus for an NC machine tool, that can achieve high accuracy machining by offsetting the amount of operation of a motion mechanism in accordance with the analysis result of the behavior of the NC machine tool. The offset apparatus 1 comprises: a model analyzing data base 12 in which three dimensional model data of the motion mechanism 2 and condition data for performance analysis are stored; a model analyzing section 13 which analyzes the performance of the motion mechanism 2; a data accumulating section 14 which stores analyzed performance analysis data; an offset amount computing section 15 which computes an offset amount to be applied to a commanded operation amount on the basis of the performance analysis data; and an offset executing section 17 which offsets the amount of operation of the motion mechanism 2 on the basis of the offset amount.

Abstract: The present invention provides an NC machine tool which permits a check for the run-out of a spindle thereof at any time. The NC machine tool includes deflection detecting means (22) provided on a base within a machining area, and run-out diagnosing means (8) for conducting a diagnosis on the run-out of the spindle by calculating the amount of the run-out of the spindle on the basis of a deflection detected by the deflection detecting means (22) and comparing the calculated run-out amount with a predetermined tolerance. A test tool is attached to the spindle and rotated about an axis thereof, and the deflection of an outer circumferential surface of the test tool is detected by the deflection detecting means (22). On the basis of the deflection thus detected, the run-out diagnosing means (8) conducts a diagnosis on the run-out of the spindle.

Abstract: A floppy disc drive apparatus includes a spindle motor, a magnetic head, a drive mechanism, a mechanism controller, a floppy disc controller, and a universal serial bus interface. The spindle motor rotatably drives a floppy disc at a rotational speed of 600 rpm or more. The magnetic head reads and records data on the floppy disc. The drive mechanism has an actuator that scans the magnetic head in a radial direction of the floppy disc. The mechanism controller controls the drive mechanism to thereby reproduce and record specified data on the floppy disc. The floppy disc controller transfers and receives data to and from the mechanism controller at a transfer rate of 1 Mbit/s or greater. The universal serial bus interface allows the floppy disc controller to transfer and receive data to and from an external apparatus at a transfer rate of 1 Mbit/s or greater.