Sodick Co., Ltd.

Ichiro Araie

Shuji Okazaki

Yasuyuki Miyashita

Taro Hasegawa

Katsuhiko Kobayashi

Toshio Kaji

Shuichi Kawada

Atsushi Hirota

Hiroshi Amioka

Yuji Kaneko

Katsutaka Muranaka

Shinji Ito

Masahiro Takano

Osamu Akemura

Yoshitaka Kato

Yuta Yoshida

Kazufumi Nambu

Kei Mochizuki

Koji Shu

Mitsuru Murai

Tatsuro Hayakawa

Hiroyasu Miyakawa

Seishi Kobayashi

The present invention provides a system capable of estimating a molding state in a manufacturing process of the lamination molded object. According to the present invention, provided is a system for estimating a molding state in a manufacturing process of the lamination molded object including an image acquisition unit and an analysis unit. The lamination molded object is manufactured by repeating a material layer forming step of forming a material layer by supplying material powder onto a molding region and a solidified layer forming step of forming a solidified layer by irradiating the material layer with a laser beam. The image acquisition unit is configured to acquire image data of a spatter generated around a molten pool formed by irradiation with the laser beam. The analysis unit is configured to analyze the image data to estimate a parameter representing the molding state.

Lamination molding apparatus, molding state estimation system, molding state estimation method, molding state estimation program, and learning method of learning model for molding state estimation

A carrier device is provided, which includes: a moving body; a top plate arranged above and separated from the moving body; a magnet plate including a plurality of permanent magnets arranged parallel to a predetermined moving direction on a lower surface of the top plate in a manner that adjacent polarities are different; a moving control coil unit including a plurality of exciting coils arranged on an upper surface of the moving body along and separated from the magnet plate; top gap control coil units including a plurality of exciting coils arranged on the upper surface of the moving body along and separated from the magnet plate; and a controller supplying drive currents respectively to the moving control coil unit and the top gap control coil units to make the moving body move along the moving direction, and controlling a top gap.

Carrier device and control method for carrier device

A stress controlled layer is constituted to include a compressive stress applied part that is a region to which a compressive stress is applied and a compressive stress non-applied part that is a region different from the compressive stress applied part. In a solidifying step, scanning of a laser beam or an electron beam is performed while a scanning direction for the compressive stress applied part is different from a scanning direction for the compressive stress non-applied part such that the compressive stress applied part expands further than the compressive stress non-applied part or the compressive stress non-applied part shrinks compared with the compressive stress applied part based on a relationship between the scanning direction and an expansion quantity or a shrinkage quantity at a time of temperature change or at a time of heat treatment.

Method of additive manufacturing

A lamination molding method, which repeats a material layer forming step of forming a material layer and a solidifying step of irradiating an irradiation region of the material layer with laser beams scanned by n scanners to form a solidified layer, includes: a first dividing step and an irradiation order deciding step. In the first dividing step, the irradiation region is divided to 2n-1 or more divided regions by a plurality of first dividing lines in a manner that irradiation time of each of the divided regions to which the laser beams are simultaneously irradiated becomes equal. In the irradiation order deciding step, an irradiation order of the divided regions in the solidifying step is decided in a manner that the laser beams are simultaneously irradiated to the divided regions that are not adjacent, and the laser beams are not simultaneously irradiated to the divided regions that are adjacent.

Lamination molding method and lamination molding system

A calibration method of an additive manufacturing apparatus includes an irradiation trace forming step, an imaging step, a specifying step, and a correction step. The irradiation trace forming step scans laser beams with each of a plurality of scanners with respect to a plurality of target positions on a calibration plate installed on a molding region, and forms a plurality of irradiation traces having different shapes for each of the plurality of scanners. The imaging step simultaneously images the plurality of irradiation traces formed with respect to the same target position. The specifying step specifies a plurality of irradiated positions of the laser beam scanned by each of the plurality of scanners. The correction step generates correction data that specifies a deviation amount at any point of a laser coordinate system related to each of the plurality of scanners.

Additive manufacturing apparatus and calibration method thereof

A laminating and shaping apparatus includes a laser radiation unit configured to radiate a laser to a powder layer and form sintered sections, an imaging unit configured to image the sintered sections, a calculation device configured to calculate actual laser radiation positions from positions of the sintered sections and calculate a positional deviation of the laser radiation position at each of the sintered sections, and a correction device configured to correct the actual laser radiation position of each of the sintered sections to a target laser radiation position. The laser radiation unit forms sintered sections to surround the irradiation region by performing laser radiation on places including outermost positions in the irradiation region, and as the recoater head is moved in the horizontal uniaxial direction after imaging of the plurality of sintered sections by the imaging unit, at least a plurality of sintered sections are removed from the irradiation region.

Method of correcting a laser radiation position

A lamination molding apparatus, includes a material layer former to form a material layer; a first emitter to form a solidified layer by irradiating the material layer with a first beam; and a thermal adjuster to adjust a temperature of at least a portion of the solidified layer to at least one of a predetermined first temperature and a predetermined second temperature. The temperature of at least the portion of the solidified layer is adjusted to the first temperature, and then to the second temperature. When the first temperature is referred to as T, the second temperature is referred to as T, a martensite start temperature of the solidified layer is referred to as Ms, and a martensite finish temperature of the solidified layer is referred to as Mf, all of the following relations of T&#x2265;Mf, T&#x3e;T, and T&#x2264;Ms are satisfied.

Lamination molding apparatus and method for producing three-dimensional molded object

A lamination molding apparatus including a chamber covering a molding region; a laser beam source to emit a laser beam for sintering a material powder supplied on the molding region to form a sintered layer; and a scan unit to scan the laser beam. The laser beam has one or more spot shapes including at least an elongated shape, and the scan unit is configured to scan the laser beam, of which the spot shape is an elongated shape, in a lateral direction of the elongated shape, is provided.

Lamination molding apparatus

A laminate molding apparatus calculates three-dimensional finished shape data after displacements occurred after molding of the initial molded object are completed based on a molding program corresponding to three-dimensional shape data of a molded object to be created, compares the three-dimensional finished shape data of the initial molded object with three-dimensional shape data to calculate a correction data of the displacement, creates a corrected molding program corresponding to corrected three-dimensional shape data in which coordinates of the surface of the molded object to be created by adding the correction data to the three-dimensional shape data, and molds a corrected molded object under the same molding conditions as when the initial molded object is molded based on the corrected molding program.

Laminate molding apparatus

According to the present invention, a galvanometer scanner, comprising: an operation portion having a rotary shaft; an inner sliding member configured to rotatably support the rotary shaft; a reaction force absorbing portion, provided outside the rotary shaft via the inner sliding member, configured to replace a force acting against the operation portion with an angular acceleration; an outer sliding member configured to rotatably support the reaction force absorbing portion; and a fixed portion provided outside the reaction force absorbing portion via the outer sliding member, is provided.

Galvanometer scanner

A powder sintering lamination molding method which can improve the quality of the molded product without extending the time required for the lamination molding. A powder sintering lamination molding method, including the steps of, irradiating an irradiation region of the sliced layer of a molded product surrounded by an outline profile with a laser to selectively sinter the material powder of the material powder layer within the irradiation region; wherein a cooling period is provided after the laser is irradiated along the first line and before the laser is irradiated along the second line.

Three dimensional printer

A lamination molding apparatusincludes a powder layer forming apparatus, a recoating head, a servo motor, a laser irradiating device, a numerical control apparatus, a laser control apparatusand a computer aided manufacturing (CAM) system. The blademoves in the horizontal axis direction so as to form the powder layer on a predetermined molding region. The laser control apparatuscontrols the laser irradiating deviceand calculates an irradiation range of a laser beam for every powder layer. The numerical control apparatusobtains data of the irradiation range from the laser irradiating deviceand outputs a move command such that the blademoves at a feed speed faster than a pre-set feed speed adapted for recoating, in the molding region outside of the irradiation range.

An improved lamination molding apparatus which can maintain the inert gas environment in the chamber as well as remove the fume swiftly and efficiently away from the optical pathway of the laser beam, is provided.

A spindle apparatus includes a rotatable first spindle () to which a tool can be attached. The first spindle is supported in a base with high precision using an air hydrostatic bearing. The spindle apparatus further includes a second spindle () capable of rotation about an axis substantially aligned with the axis of the first spindle, first connection means for electrically connecting a base side and the second spindle, and second connection means for electrically connecting the first spindle and the second spindle. Electrical connection between the base side and the first spindle is carried out via the first and second connection means. The first connection means is, for example, a brush (). The second connection means has a degree of mechanical freedom and is, for example, a flexible electrical wire () or a helical spring ().

Spindle apparatus

A machine tool having a tool member which is moveable along at least one axis relative to a workpiece to be machined, comprising thermosensors for sensing temperatures of a plurality of components of the machine tool. Responsive to the sensed temperatures, neural networks infer thermal deformations of the machine components. Based on the inferred values of thermal deformations, a correction signal is obtained which is combined with a drive signal for moving the tool member and/or workpiece to correct for any positioning error in the direction of the axis. Thermal deformations of machine components should be suitably inferred under the circumstances prevailing where the machine tool is installed. A corresponding method of correcting thermal deformations in a machine tool is also described.

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Kanagawa, Japan

Ichiro Araie