BUFFALO MACHINERY COMPANY LIMITED Patent applications |
Patent application number | Title | Published |
20130265411 | SYSTEM AND METHOD FOR INSPECTING SCRAPED SURFACE OF A WORKPIECE - A system for inspecting a scraped surface of a workpiece performs steps of: a) capturing an image of the scraped surface to obtain a original image section; b) removing high point regions whose areas are outside of a predetermined area range to obtain a base image; c) processing pixels of the base image using a first imaging mask to generate a judgment image; d) determining whether uniformity of the high point regions in the base image conforms a standard; e) determining whether a number of the high point regions in the base image falls within a predetermined number range; and f) evaluating whether or not a portion of the scraped surface conforms with the standard based on results of determinations made in steps d) and e). | 10-10-2013 |
20120321406 | DEFLECTION CORRECTION SYSTEM FOR A MILLING MACHINE - A milling machine has a carriage, a main spindle seat extending along an axis, and a motor operable to drive displacement of the main spindle seat relative to the carriage along the axis. A deflection correction system includes a control unit, a displacement sensor, at least one pressure cylinder, and a pressure sensor. The pressure cylinder includes a cylinder body, and a control rod extended retractably into the cylinder body. The control unit is configured to determine a pressure range as a function of displacement detected by the displacement sensor, and to maintain fluid pressure in the pressure cylinder within a pressure range, thereby controlling the control rod via the cylinder body to position the second end portion of the main spindle seat relative to the axis. | 12-20-2012 |
20120306420 | CONTROL SYSTEM OF MILLING MACHINE - A control system of a milling machine is disclosed. The milling machine has an overarm, a spindle connected to a cutter, a spindle motor, and an X-axis motor, a Y-axis motor and a Z-axis motor. The control system includes a vibration sensor for detecting a vibration level of the spindle. The control system also includes a central control unit configured to adjust a rotation speed of at least one of the X-axis motor, the Y-axis motor, and the Z-axis motor to bring a load current of at least one of the motors to be within a corresponding current range, and configured to adjust a rotation speed of the spindle motor to bring the vibration level to be within a vibration range. | 12-06-2012 |
20120294688 | SPINDLE CONTROL SYSTEM FOR A MILLING MACHINE - A spindle control system for a milling machine is provided. The milling machine includes a column, an overarm, a spindle for mounting a cutter, a first motor mounted on the column for driving movement of the overarm, and a second motor mounted on the overarm for driving rotation of the spindle. The spindle control system includes a distance sensor and a temperature sensor, each to be mounted on the overarm and to be disposed proximate to the end portion of the spindle. The spindle control system further includes a central control unit for determining a compensation parameter based on the displacement sensed by the distance sensor and the temperature sensed by the temperature sensor, and for controlling movement of the overarm by the first motor through a compensation distance based on the compensation parameter to compensate for at least one of the cutter deformation and the spindle deformation. | 11-22-2012 |
20110279075 | METHOD AND MODULE FOR CONTROLING ROTATION OF A MOTORIZED SPINDLE - In a method and module for controlling rotation of a motorized spindle driven by a driving unit, a sensing unit senses vibration of the spindle and generates a voltage signal corresponding to the vibration of the spindle. A processing unit receives the voltage signal from the sensing unit, generates an adjusting ratio equal to a reference voltage corresponding to a predetermined vibration level of the spindle by the voltage signal upon detecting that the voltage signal is greater than the reference voltage and is less than a predetermined threshold voltage that is greater than the reference voltage, and outputs a control signal corresponding to the adjusting ratio to the driving unit such that the driving unit reduces a rotation speed of the spindle by the adjusting ratio in response to the control signal from the processing unit. | 11-17-2011 |
20100249982 | DISPLACEMENT COMPENSATION CONTROL METHOD AND MODULE FOR AN OBJECT MOUNTED MOVABLY ON A DRIVING ROD UNIT - In a displacement compensation control method and module for an object mounted movably on a driving rod unit and movable between first and second positions relative to the driving rod unit during processing, a detecting unit determines a displacement amount of a free end of the driving rod unit from a reference position in an axial direction of the driving rod unit as a result of thermal deformation of the driving rod unit during high-speed rotation. A control unit controls the driving rod unit to rotate based on the displacement amount so that the object moves between first and second compensation positions relative to the driving rod unit. A distance between the first position and the first compensation position, and a distance between the second position and the second compensation position are equal to the displacement amount. | 09-30-2010 |
20100119319 | PROCESSING MACHINE - A processing machine includes a machine bed, a spindle seat, a sliding rail unit, and a driving unit. The sliding rail unit is disposed between the machine bed and the spindle seat. The driving unit is used for driving the spindle seat to move within a slot in the machine bed, and includes a threaded rod journalled on a junction between a bottom wall surface and a lateral wall surface of the machine bed, and a nut member disposed fixedly on a junction between a bottom surface and a lateral side surface of the spindle seat and engaging the threaded rod. | 05-13-2010 |