Class / Patent application number | Description | Number of patent applications / Date published |
700177000 | Protective or diagnostic feature | 34 |
20090069927 | VIBRATION SUPPRESSING DEVICE FOR MACHINE TOOL - A calculating member carries out Fourier analysis of a vibrational acceleration to calculate a maximum acceleration and frequency thereof. The calculating member then compares the maximum acceleration with a threshold value, and when the acceleration exceeds the threshold value, the calculating member calculates a k-value and phase information, and stores each calculated value. When retrying is selected, the calculating member determines a type of a current chatter vibration from the phase information, determines the existence of a chatter vibration which is different from the determined chatter vibration, and calculates each new phase information according to the determined chatter vibration and an existence of a different chatter vibration which had been generated before generation of the current vibration. The calculating member then calculates a k1-value from new phase information, calculates the optimum rotation speed by using the k1-value, and changes the rotation speed to the optimum rotation speed. | 03-12-2009 |
20090187270 | METHOD TO ALIGN CHARACTERISTIC FREQUENCY OF MATERIAL REMOVAL TOOL AND ROTATION SPEED OF SPINDLE OF MACHINE TOOL AND MATERIAL REMOVAL TOOL SO ALIGNED - A method to adjust a modal property of a material removal tool without changing a projection length of the material removal tool is disclosed. Adjusting substantially aligns a characteristic frequency of the material removal tool with a rotation speed of a spindle of a machine tool. A material removal tool employing the method and a method to machine metal are also disclosed. | 07-23-2009 |
20090271026 | Method for Managing an Active Safety for an Automatically Operating Machine - This invention relates to a method for managing active safety for an automatically operating machine comprising a work surface and a work tool displaced according to a pre-established work program. The method consists of dividing ( | 10-29-2009 |
20090276080 | MACHINE TOOL MONITORING DEVICE - The invention proceeds from a machine tool monitoring device having a detection unit for detecting an application situation in a machine tool. It is proposed that the detection unit is provided to detect an application situation on the basis of at least one distance parameter. | 11-05-2009 |
20100004777 | S-SHAPE DETECTION TEST PIECE AND A DETECTION METHOD FOR DETECTING THE PRECISION OF THE NUMERICAL CONTROL MILLING MACHINE - The present invention relates to an “S” shaped detection test piece for comprehensively detecting the precision of the numerical control milling machine and the detection method thereof. The detection test piece consists of an “S” shaped equal thickness edge strip ( | 01-07-2010 |
20100057244 | MACHINE TOOL MONITORING DEVICE - The invention relates to a machine tool monitoring device with an identification unity for identifying the operating situation of a machine tool. According to the invention, the machine tool monitoring device has at least one projection unit for defining at least one region to be monitored. | 03-04-2010 |
20100106284 | MACHINE TOOL MONITORING DEVICE - The invention relates to a machine tool monitoring device having a detection unit for detecting an application in a machine tool. According to the invention, at least one component of the machine tool is used as a reflector for a transmitting and/or receiving signal of the detection unit. | 04-29-2010 |
20100152882 | MACHINE TOOL MONITORING DEVICE - The invention relates to a machine tool monitoring device with an identification unit for identifying the operating situation of a machine tool. According to the invention, the identification unit is designed to identify an operating situation using at least one distance variable. | 06-17-2010 |
20110144795 | SYSTEMS AND METHODS FOR MANAGING MACHINE TOOLS - Systems and methods for managing machine tools are provided. When a current abnormality occurs in one of at least one machine tool, a specific failure category is determined according to the current abnormality, and at least one suggested combination of parameters is generated according to the specific failure category and a transaction database, wherein the specific failure category is one of a plurality of predefined failure categories, and each suggested combination of parameters includes a plurality of associated parameters, which are commonly retrieved for the specific failure category. Each transaction data in the transaction database records a plurality of parameters corresponding to a failure category, wherein the parameters are the parameters whose parameter values are retrieved from the at least one machine tool, having the abnormality according to the failure category. | 06-16-2011 |
20110307093 | EARLY-WARNING APPARATUS FOR HEALTH DETECTION OF SERVO MOTOR AND METHOD FOR OPERATING THE SAME - An early-warning apparatus for health detection of a servo motor and a method for operating the same are applied to estimate vibration phenomenon of a CNC tool machine. First, a vibration signal is produced through a vibration detecting unit. Afterward, the vibration signal is sequentially sent to a data buffer. Afterward, the vibration signal is transformed in time and frequency domains through a time-frequency transforming unit. Finally, a deterioration index is calculated through a deterioration index calculating unit to obtain a health index which is calculated through a health index calculating unit. Therefore, the build-in vibration detecting unit is provided to dispense with additional external sensors. Furthermore, the vibration phenomenon of the servo motor of the CNC tool machine is estimated according to the health index, thus analyzing non-linear and non-stationary characteristics of the estimated vibration phenomenon. | 12-15-2011 |
20120010745 | NUMERICAL CONTROLLER FOR MACHINE TOOL WITH FUNCTION OF CONTROLLING SPEED OF ARC OPERATION - A numerical controller for machine tools that has function of controlling the speed of arc operation calculates a first operable feedrate based on the arc radius of a machining path and the allowable frequency (or allowable angular speed) to which servo position control is capable of responding. The numerical controller also calculates a second operable feedrate based on the arc radius of the machining path and the allowable acceleration to which servo position control can respond, and selects the minimum feedrate from the commanded feedrate and the calculated first and second feedrate to perform speed control. | 01-12-2012 |
20120158170 | MACHINE TOOL - A machine tool, in particular a program-controlled turning, milling, and drilling machine, comprising a machining unit displaceable in a plurality of coordinate axes, in which a work spindle for exchangeably receiving a machining tool and an electric motor for driving the work spindle are mounted. The machine tool includes a programmable control unit and means for monitoring the operating state of the machine tool. According to the invention, at least one sensor for detecting at least one operating parameter is disposed on a predetermined component of the machine tool. An evaluating unit is connected to both the sensor and the control unit and processes the measurement values detected by the sensor. An optical display is provided in the direct viewing range of the operator, which displays a normal, a critical, and a dangerous operating state of the machine tool in accordance with the data from the evaluating unit. | 06-21-2012 |
20120173012 | MAIN SPINDLE DEVICE OF MACHINE TOOL - Loads that act on all the bearings that support a main spindle are derived from a variation in the state of the main spindle and, in addition, raceway surface contact pressures of the respective bearings are analyzed, so it is possible to accurately keep track of the state of each bearing. Then, when the raceway surface contact pressure exceeds a corresponding threshold, a machining condition is changed to execute control such that the raceway surface contact pressure does not exceed the corresponding threshold, and, furthermore, when the raceway surface contact pressure exceeds the corresponding threshold even when the machining condition is changed, the main spindle is controlled to stop, so it is possible to prevent a seizure of each bearing. Thus, it is possible to improve machining accuracy by controlling the main spindle with high accuracy. | 07-05-2012 |
20130103182 | CUTTING TOOL DATA VERIFICATION SYSTEM AND METHOD - A method of operating a machining system includes comparing one or more features of a cutting tool to information stored on a data chip secured to a tool holder of the cutting tool. The cutting tool is loaded into the machining system, and the information stored on the data chip is compared to cutting tool requirements of a machining program for instructing operation of the machine. When a result of one or more of the comparisons is outside of a predetermined threshold, operation of the machining system is stopped. | 04-25-2013 |
20130190921 | THERMAL DISPLACEMENT COMPENSATING DEVICE FOR MACHINE TOOL - A thermal displacement compensating device calculates a thermal displacement amount which is produced by heat generation or dissipation as a machine tool is actuated or stopped and changes with time. A thermal displacement compensation amount is calculated by multiplying the calculated thermal displacement amount by a coefficient. A position command is compensated by adding the thermal displacement compensation amount to the position command. On the other hand, a variation between a thermal displacement amount calculated last time and a current thermal displacement amount is determined for each predetermined time. A plurality of thermal displacement amount change states are identified based on comparison between the determined variation and a predetermined threshold. The coefficient is calculated based on the identified thermal displacement amount change state. | 07-25-2013 |
20140094955 | System And Method For Identification Of Contact Between An Object And A Static Implement In A Power Tool - A method for operating a power tool detects human contact with a non-moving implement of the power tool. The method includes sampling an electrical signal that passes through the non-moving implement, identifying in-phase and quadrature phase components for the sample, identifying a first distance between the components of the sample and a centroid of a cluster of samples corresponding to human contact with the non-moving implement, identifying a second distance between the components of the sample and a second centroid identified for another cluster of samples corresponding to no human contact with the non-moving implement, and identifying human contact with the non-moving implement with reference to the first distance being less than the second distance. | 04-03-2014 |
20140094956 | System And Method For Identification Of Contact Between A Human And A Static Implement In A Power Tool - A method of operating a power tool detects human contact with a non-moving implement in the power tool. The method includes generating a series of samples of an electrical signal passing through the non-moving implement, identifying a component for each sample in the series of samples of the electrical signal, identifying a first max−min value corresponding to a first plurality of samples in the series of samples occurring during a first periodic time interval with reference to a difference between a maximum value and a minimum value identified in the components of the first plurality of samples, and identifying human contact with the non-moving implement in response to the first max−min value being greater than a first predetermined threshold. | 04-03-2014 |
20140148940 | System for Remotely Deactivating the Operation of a Machine - A system for remotely deactivating the operation of a machine tool responsive to an adverse operating condition of the machine, including an electrical circuit disposable in the vicinity of the machine, including a relay, interconnecting a voltage source and the control unit of the machine, functional to pause the control of such machine, a receiver disposable in the vicinity of the machine, responsive to a R-F signal operative to actuate such relay, and a portable device displaceable relative to the vicinity of the machine for selectively transmitting an R-F signal to such transmitter for actuating such relay. | 05-29-2014 |
20140207273 | CONTROL DEVICE FOR MACHINE TOOL WITH TIME ESTIMATION UNIT FOR ESTIMATING TIME UNTIL MOTOR REACHES OVERHEAT TEMPERATURE - A control device for a machine tool including a motor for driving a spindle includes: a current detection unit that detects a current driving the motor; a storage unit that stores overheat temperature specified for the motor; a temperature detection unit that detects temperature of the motor; a time estimation unit that estimates, by using the temperature detected by the temperature detection unit and the overheat temperature, time from when present estimation takes place until the motor reaches the overheat temperature, under a condition in which the current detected by the current detection unit continuously passes through the motor; and a provision unit that provides the time estimated by the time estimation unit. | 07-24-2014 |
20160147216 | APPARATUS FOR MONITORING AND PROVIDING VISUAL REPRESENTATIONS OF THE OPERATING CONDITIONS OF MACHINE TOOL PARAMETERS - Apparatus for monitoring and providing visual representations of the operating conditions of machine tool parameters, in particular for program-controlled turning, milling, and drilling machines, which have a machining unit displaceable in a plurality of coordinate axes, in which a work spindle for exchangeable receiving a machining tool and an electric motor for driving the work spindle are mounted. The machine tool includes a control unit and means for monitoring the operating state of the machine tool. The monitoring apparatus has at least one sensor for detecting at least one operating parameter of the machine tool. An evaluating unit is connected to both the sensor and the control unit and processes the measurement values detected by the sensor. An optical display is provided in the direct viewing range of the operator, which viewing range includes the machine operating spindle, tool holder, tool, and workplace. The optical display can display a normal, a critical, and a dangerous operating state of the machine tool in accordance with the data from the evaluating unit. | 05-26-2016 |
700178000 | Tool/workpiece interference prevention | 14 |
20090062955 | NUMERICAL CONTROLLER WITH INTERFERENCE CHECK FUNCTION - A numerical controller having an interference prevention function whereby calculation for preventing interference is reliably performed. The numerical controller has the function of defining interference regions corresponding to multiple machine structural objects, respectively, moving the interference regions in accordance with machine coordinate values of the machine structural objects updated by interpolation, and performing an interference check to determine whether or not the interference regions interfere with each other. Interference check computation period automatic adjusting means automatically adjusts an interference check computation period, based on the value obtained by dividing a computation time required for the interference check by time of occupancy of the interference check within one interpolation period. Interference region expanding means expands the interference regions, based on the highest of feed velocities of respective axes and the interference check computation period. Checking means determines whether or not the expanded interference regions interfere with each other. | 03-05-2009 |
20090082900 | NUMERICAL CONTROLLER OF MACHINE TOOL - A numerical controller having a function-generating unit which executes function generation for shaft movement according to a machining program is provided, the numerical controller further comprising a unit which stores shape data of the movable unit and shape data of an interfering structure; a retracting direction determining unit which determines a retracting direction; an interference checking position calculating unit which successively calculates, as an interference checking position, a position in which a desired distance is added to the current position of the movable unit according to the determined retracting direction; an interference confirming unit which confirms presence or absence of interference between the shape data of the movable unit and the shape data of the interfering structure by virtually moving the shape data of the movable unit; and a power outage detecting unit which sends a power outage signal to a DC power supply unit and the function-generating unit during power outage, wherein the function-generating unit executes function generation according to a result of the interference confirming unit. | 03-26-2009 |
20090281652 | CONTROLLER OF THREE-AXIS TOOL UNIT AND WORKING MACHINE - An object of the present invention is to provide a controller of a three-axis tool unit which can compensate for mutual interference caused by the dynamic behaviors of three axes for operating a tool in three directions orthogonal to one another. The controller of the three-axis tool unit of the present invention includes a noninteracting control section which calculates, by using transfer functions, correction values for compensating for mutual interference caused by the dynamic behaviors of a first mechanism including a first actuator, a tool holder, and the tool, a second mechanism including a second actuator, the tool holder, and the tool, and a third mechanism including a third actuator, the tool holder, and the tool, and corrects the target displacements of the first, second, third actuators by using the correction values, the transfer functions indicating mutual influence of the dynamic behaviors of the first, second, and third mechanisms. | 11-12-2009 |
20100087948 | COLLISION PREVENTING DEVICE INCORPORATED IN NUMERICAL CONTROL APPARATUS - A collision preventing device includes an acceleration/deceleration simulating unit | 04-08-2010 |
20110035044 | NUMERICAL CONTROL METHOD AND APPARATUS THEREFOR - A preceding-check processing sequence is provided separately from a machine-control processing sequence for an actual machine control, to make it possible to perform a collision check at an accurate position from an operation restart time of a machining program even when an operator interrupts an operation in the middle of the machining program or when the operator interrupts the operation as having detected a collision. This preceding-check processing sequence performs a collision possibility check ahead of an actual machine control. In this arrangement, there is provided a control-state synchronizing unit that matches a state of the preceding-check processing sequence with a state of the machine-control processing sequence during a period from when a machine stops until when the machine restarts an operation. | 02-10-2011 |
20110106291 | INTERFERENCE CHECK DEVICE, INTERFERENCE CHECK METHOD, AND MACHINE TOOL HAVING THE INTERFERENCE CHECK DEVICE - An interference check device is provided which, when a plurality of moving means are provided for one moving direction of one movable body, can conduct interference check of the movable body easily. | 05-05-2011 |
20110231005 | Method for Managing an Active Safety for an Automatically Operating Machine - This invention relates to a method for managing active safety for an automatically operating machine comprising a work surface and a work tool displaced according to a pre-established work program. The method consists of dividing ( | 09-22-2011 |
20120004760 | Device for Protecting a Work Spindle - In a device for protecting a work spindle ( | 01-05-2012 |
20120089247 | WORKPIECE MEASURING DEVICE, COLLISION PREVENTING DEVICE, AND MACHINE TOOL - A workpiece measuring device, a collision preventing device, and a machine tool acquires 3D data of the shape of a workpiece used to prevent a collision between the workpiece and part of the machine tool. A measuring section measures the distance to the workpiece through scanning in a non-contact manner; and a shape recognition section generates a 3D mesh structure. The coordinates of a measurement point on the workpiece based on distance information about the measured distance to the workpiece, and that generates a measurement geometry map such that, when the ratio of the number of times the calculated measurement point is included in one unit of the 3D mesh structure to the number of times a position of the workpiece corresponding to the one unit is scanned is equal to or larger than a predetermined threshold, the one unit is regarded as part of the workpiece are included. | 04-12-2012 |
20120179286 | INTERFERENCE PREVENTING METHOD AND DEVICE - An interference preventing method applied on a machining machine includes the following steps. Firstly, a control command is provided in response to an operation event. Next, protection information corresponding to a protection target component is provided. Then basic envelop of the protection target component is obtained. Then the basic envelop is segmented into a number of sub protection blocks according to a multi-hierarchical protection parameter and sub protection blocks not linked with the protection target component are removed, so as to determine a multi-hierarchical interference protection area. Next, whether an interference event of the multi-hierarchical interference protection area and other components occurs, so as to determine whether interference event of the protection target component occurs; if so, control signal is provided to control the processing operation of the machining machine. | 07-12-2012 |
20130184852 | NUMERICAL CONTROL DEVICE - A numerical control device including a collision determining unit that detects a possibility of collision between a machine and an area set as an entry prohibited area; an operation-continuation instructing unit that instructs whether to continue an operation when the collision determining unit detects the possibility of collision and shaft movement is temporarily stopped; a machining-information storage unit that stores internal operation information of the numerical control device regarding the temporary stop when the operation-continuation instructing unit instructs continuation of the operation; and a collision-determination processing unit that invalidates a collision determination on the basis of the operation information stored in the machining-information storage unit when executing the same machining program the next and subsequent times | 07-18-2013 |
20140156058 | IMAGE IDENTIFYING SYSTEM AND METHOD FOR IDENTIFICATION OF FINISHED PROCESS BY IMAGING - An image identifying method for a manufacturing process which is implemented by an image identifying system. The image identifying system is applied on a mold which ejects finished products. A retrieval mechanism takes out the ejected product. An image-capturing unit captures an image of the retrieval mechanism after the retrieval mechanism has taken out the finished product. The storage unit stores a predetermined image of a complete and successful retrieval of retrieval mechanism a finished product. If the acquired image is not the same with the predetermined image in the storage unit; all actions on the mold are suspended. | 06-05-2014 |
20150045941 | Interference Checking Device - An interference checking device | 02-12-2015 |
20160195870 | NUMERICAL CONTROLLER | 07-07-2016 |