Dmg Mori Company Limited

Mori Seiki Co., Ltd.

Dmg Mori Seiki Co., Ltd.

Fuji Xerox Co., Ltd.

Katsuhiko Ono

Akira Kimura

Shizuo Nishikawa

Kengo Kawai

Kimiyuki Nishimura

Keiichi Nakamachi

Masataka Sakamoto

Yasuhiko Morita

Norio Sato

Kenichiro Ueno

Masato Tsuji

Yutaka Watanabe

Morihiro Hideta

Satoshi Miyamoto

Koji Yamamoto

Masakazu Takayama

Kingo Maeda

Tsuyoshi Seto

Hisayoshi Morita

Koji Iiyama

Hidefumi Nishigai

Masanori Murozumi

Sumihiro Kiyota

Hideki Takedomi

Ryo Murakami

Masafumi Takahashi

Provided is an information processing method capable of effectively utilizing a variety of types of information collected from a machine tool. The information processing method includes the step of communicating with a plurality of machine tools (S). The plurality of machine tools each include a sensor to sense information about the machine tool as sensed information. The step of communicating (S) includes the step of receiving as collected data from each of the plurality of machine tools part information about a part of the machine tool and the sensed information obtained by the sensor. The information processing method further includes the steps of storing in a storage unit the collected data received from each of the plurality of machine tools (SA, SB); and based on the plurality of collected data stored in the storage unit, learning a correlation between part information of a machine tool and sensed information obtained by the sensor internal to that machine tool (S).

Information processing method, information processing system, and information processing device

A machine tool includes: a display; a tool configured to machine a workpiece; a spindle configured to rotate the tool or the workpiece; a sensor configured to detect a vibration frequency of the spindle or the tool; and a processor configured to control the machine tool. The processor is configured to: detect a chatter vibration in the spindle or the tool based on the vibration frequency; based on a frequency of the chatter vibration, a rotation speed of the spindle, and the number of cutting edges of the tool, calculate an order corresponding to the number of vibrations of the tool during a period of time until a current rotation angle of a first cutting edge of the tool reaches a current rotation angle of a second cutting edge of the tool; and present order information on the display, the order information indicating a magnitude of the calculated order.

Machine tool, method for controlling machine tool, and computer-readable storage medium storing program for controlling machine tool

This invention provides a linear encoder having an arbitrary size while maintaining high producibility. An absolute linear encoder includes a long scale formed by continuously connecting a first short scale and a second short scale in which a first cyclic bit string and a second cyclic bit siring generated using the same initial value for different generator polynomials are arranged, and at least two sensors arranged at positions facing the long scale side by side in a longitudinal direction of the long scale.

Absolute linear encoder

A machining management apparatus includes a tool information storage storing therein information relating to each cutting tool used in a machine tool and storing therein a coefficient n and a coefficient C in a tool life equation corresponding to tool life influencing factors including at least a workpiece and a cutting tool material, and an adapted cutting speed calculator executing a machining condition receiving processing of receiving information on the tool life influencing factors and information on a desired cutting speed, a coefficient recognition processing of recognizing the coefficient n and the coefficient C corresponding to the tool life influencing factors by referring to the tool information storage based on the received tool life influencing factor information, and a cutting speed calculation processing of calculating a cutting speed adapted to the desired cutting time according to the tool life equation based on the recognized coefficient n and coefficient C.

Machining management apparatus

A machining status display apparatus includes a display device having a display screen, a stability lobe picture creator creating, based on specifications of a tool to be used, display picture data for displaying a stability lobe as a correlation diagram between a spindle rotation speed and a limit depth of cut of the tool above which regenerative chatter occurs, a first machining information picture creator creating display picture data for displaying machining related information other than regenerative chatter corresponding to set machining conditions, and a display controller displaying the stability lobe and the machining related information with the stability lobe and the machining related information superimposed one on another on the display screen of the display device based on the display picture data created by the stability lobe picture creator and the display picture data created by the first machining information picture creator.

Machining status display apparatus

An apparatus includes vibration data obtainerobtaining data on vibration caused by a tool in cutting, a vibration frequency calculatorcalculating a vibration frequency of the tool by analyzing the obtained vibration data, a regenerative chatter detectordetecting whether regenerative chatter occurs by comparing the calculated vibration frequency of the tool with a spindle rotation number, and a spindle rotation controllergradually decreasing or increasing the spindle rotation number when occurrence of regenerative chatter vibration is detected, and a stable rotation number calculatormonitoring variation of the vibration frequency of the tool and determining a spindle rotation number when the variation of the vibration frequency exceeds a predetermined reference value to be a stable rotation number.

Method of calculating a stable spindle rotation number and an apparatus for calculating a stable spindle rotation number

Methods and apparatus for detecting machine tool window airtightness includes an airtight state detector, having a sensor detecting the pressure in a space of the window, and a judging section for determining appropriateness of the airtight state of the space based on a pressure value from the pressure sensor and outputting a judgment result. Pressure in the window space, which initially may be pressurized or pressure-reduced, is detected intermittently by the pressure sensor, and the judging section determines appropriateness of the airtight state of the window on the basis of a variation state of the detected pressure.

Method and apparatus for detecting airtight state of machine-tool window

A positioning control apparatus has a moving body, a feed device having a guide mechanism for guiding the moving body in the direction of its feed axis and a drive mechanism for moving the moving body, a structural body supporting the feed device and a controller for controlling a moving position of the moving body with respect to a reference position on a machine tool by controlling the operation of the drive mechanism, and further has a calculating section calculating displacement of the feed device in the feed-axis direction with respect to the reference position caused by displacement of the structural body and a compensating section receiving the displacement data measured by the calculating section and adding modification data for eliminating the displacement to a control signal in the controller.

Positioning control apparatus and machine tool provided therewith

An optimum cutting feed rate of a machine tool is calculated at the outset and a tool path as well as the optimum cutting feed rate calculated is directly output to a driving unit of the machine tool. A relative movement between the work and a tool is made to occur along the tool path at the optimum cutting feed rate for each part of the tool path. To this end, a control system includes a CL data generating unit, a CL data memory, a driving capability data memory, a cutting feed rate data generation unit, a cutting feed rate data memory, and a controller

Control system for a machine tool

Electronic equipment, including a GPS dongle and a PC, compares an acquired current location position of the electronic equipment with an acquired planned installation position of a machine tool to determine whether or not the current location position is within a predetermined range from the planned installation position. Further, the electronic equipment determines, if it is determined that the current location position is within the predetermined range from the planned installation position, whether or not a predetermined condition has been satisfied. The electronic equipment also performs, if it is determined that the predetermined condition has been satisfied, information input processing on the machine tool to remove activation restriction on the machine tool. In this manner, the electronic equipment can prevent illegal removal of activation restriction on the machine tool.

Electronic equipment, and restriction removal method

A work having a non-circular cross-section is machined by relative movement between the work and a tool, as the relative position and angle between the work and tool are changed at least within a plane including the cross-section of the work. In machining along a preset tool path, the difference between the relative angle at a point on the preset tool path which machining is started and that point on the preset tool path at which machining is finished is calculated. Time needed in machining along the preset tool path is equally divided by a preset number at equal time divisions, and positions on the tool path corresponding to equal time divisions are set as tool path points. When the tool moves through each point, the relative angle is continuously changed an angle corresponding to division of the difference of the relative angles by the preset number of equal time divisions.

Machine tool, machining method, program and NC data generation device

A relocation detection unit includes: an acceleration sensor adapted to detect acceleration generated in the apparatus, an arithmetic section adapted to obtain a first calculation value by performing Nth-order integration on detected value of the acceleration sensor at a predetermined timing, wherein N is a predetermined positive integer, a correction section adapted to obtain a second calculated value by adding/subtracting a specific value to/from the first calculation value at the predetermined timing, and a detection section adapted to detect that the apparatus has been relocated if the second calculated value exceeds a preset reference value.

Relocation detection method and relocation detection unit

A workpiece measuring apparatus has an external module provided outside an NC device to acquire position data of one or more movable axes of a movable unit having a measuring head attached thereto. The position data of the measuring head is acquired at the same time interval as that for the distance measurement by the measuring head. The position of the workpiece is acquired by calculation from the acquired distance measurement data and the position data of the measuring head. The continuous shape of the workpiece can be measured by performing continuous measurement while moving the measuring head. Therefore, no modification or change is required such as adding a new function to the NC device. In addition, the present invention is applicable to any machine tool equipped with an NC device of any configuration, without being restricted by constraints of the NC device.

Apparatus for and method of measuring workpiece on machine tool

An image forming apparatus comprises: an output part that outputs variable information varying in a time-dependent manner in the image forming apparatus; a first encrypt part that encrypts the variable information outputted from the output part using a first encrypt key read out from a memory; a second encrypt key create part that creates a second encrypt key according to the variable information outputted from the output part; a second encrypt part that encrypts inherent information for specifying the image forming apparatus using the second encrypt key created by the second encrypt key create part; a generate part that generates code data according to the variable information encrypted in the first encrypt part and the inherent information encrypted in the second encrypt part; and an image form part that forms on a recording member a code image based on the code data generated in the generate part.

Image forming apparatus, image forming method and, computer readable medium and computer signal

A document exposure apparatus includes a glass plate on which a document original is located, a press cover for covering the glass plate, an open/close discriminating unit for discriminating an open state and a close state of the press cover, an exposure unit, disposed under the glass plate, for illuminating the original with light, and a control unit for controlling the illuminating operation of the exposure unit according to an open/close state of the press cover, which is discriminated by the open/close discriminating unit.

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Nara, Japan

Katsuhiko Ono