Ricoh Company, Ltd.

Kobe Steel, Ltd.

Terumo Kabushiki Kaisha

Tatsuya Fujii

Naoto Shiraishi

Shinji Sato

Takeshi Yamada

Takemasa Yamasaki

Masanobu Fukushima

Yasuhiro Izawa

Kazuo Sakamoto

Tatsuya Nakajima

Masafumi Tanaka

Ryo Fukui

Masatoshi Hida

Shuo Huang

Yutaka Sato

Yukihiro Imai

Tsutomu One

Yoshiteru Yamada

Yuichiro Ueda

Atsushi Fukunaga

Tsutomu Kawase

Yoshiharu Nishida

Eisuke Kurosawa

Yoshiaki Nishizaki

Shoji Kuriki

Takaaki Ohsawa

Shinji Yoshioka

Hiroyuki Keino

In an arc-tracking welding method and a welding device of the present invention, a deviation amount between a weaving center and a welding line is obtained based on a first relationship and a second relationship. The first relationship is a relationship between a weaving position and any one element of three electrical first to third elements related to Ohm's law, the relationship being obtained based on a physical model of an arc welding phenomenon and being associated with the deviation amount. The second relationship is a relationship between the weaving position and the element, the relationship being obtained based on the element in welding power.

Arc-tracking welding method and welding device

In preparing a built-up object by depositing beads, in a step of dividing into the bead model, a trapezoidal bead model a cross section of which is a trapezoidal shape is applied to a position where the bead is formed in a portion not adjacent to an existing bead, and a parallelogram bead model a cross section of which is a parallelogram is applied to a position where the bead is formed adjacent to a bead that is already formed, in the parallelogram bead model opposite sides in the deposition direction of the bead being parallel to each other, and opposite sides in the bead arrangement direction being parallel to a side of another bead mode that is adjacent.

Additive manufacturing method, additive manufacturing device, and controller

This welding state determination system acquires, for each weaving cycle, a characteristic amount that pertains to a physical quantity that changes according to the cycle of a weaving operation. A degree of abnormality is calculated based on an observation value that is the characteristic amount acquired in one cycle, and the average and standard deviation of a plurality of past values that are the characteristic amounts acquired prior to the one cycle. A welding state is determined based on the calculated degree of abnormality.

Welding state determination system and welding state determination method

An excess metal amount setting method includes: a thermal shrinkage prediction step of predicting a thermal shrinkage amount in the deposited body after manufacturing; a thermal shrinkage modifying step of obtaining a thermal deformation modifying profile by expanding a target profile according to the thermal shrinkage amount; a release strain prediction step of predicting an elastic deformation amount due to release strain of the deposited body after machining; an elastic deformation modifying step of obtaining an elastic deformation modifying profile by deforming the thermal deformation modifying profile according to the elastic deformation amount in a direction opposite to a deformation direction due to the release strain; and an excess metal amount setting step of adjusting an outer edge shape of the deposited body so that an excess metal amount from the elastic deformation modifying profile to an outer edge of the deposited body falls within a predetermined reference range.

Method for setting excess thickness, device for setting excess thickness, method for producing shaped object, and program

A method for manufacturing an additively-manufactured object, includes: an additively-manufacturing step of building a layered body by depositing a weld bead obtained by melting and solidifying a filler metal, the layered body having an opening along a forming direction of the weld bead and an internal space surrounded by the weld bead; and a closing step of forming a closing wall portion connecting an edge portion of the opening with the weld bead for closing. In the additively-manufacturing step, the opening is formed with a width dimension larger than a bead width of the weld bead, and in the closing step, the closing wall portion having a width dimension larger than the bead width is formed by the weld bead to close the opening.

Method for manufacturing laminated molding, and laminated molding

A building time for building an additively-manufactured object is calculated on the basis of the inter-pass time and the welding pass time and is compared with a preset upper limit value, and welding conditions in a depositing plan are repeatedly modified until the building time is equal to or less than the upper limit value. Alternatively, corrections are repeatedly performed until the shape difference between a building shape of built-up object shape data relating to the additively-manufactured object created on the basis of the inter-pass time and the inter-pass temperature, and a building shape of three-dimensional shape data, is smaller than a near net value.

Lamination planning method for laminate molded object, and laminate molded object manufacturing method and manufacturing device

A method for manufacturing an additively-manufactured object in which deposition is performed by melting and solidifying a metal depending on three-dimensional shape data of a target shape, includes: acquiring the three-dimensional shape data; creating a deposition plan in which a formation track and a heating condition of the metal are determined; determining a difference between a shape of the additively-manufactured object that thermally contracts by cooling after deposition and a shape of the three-dimensional shape data by an operation; modifying the deposition plan until the difference falls within a predetermined allowable range; and additively manufacturing the additively-manufactured object based on the deposition plan in which the difference falls within the allowable range.

Laminated molded object production method and production device

A method for designing an additively-manufactured object includes: a slicing step of slicing a shape of the additively-manufactured object into weld bead layers each having a height corresponding to one bead layer using data of the shape of the additively-manufactured object, thereby generating a plurality of virtual bead layers; a reference direction setting step of setting, as a reference direction, a direction in which the sliced layer of the additively-manufactured object is continuously provided and extended in an intermediate layer disposed at a deposition-direction center of the plurality of virtual bead layers; and a bead adjusting step of adjusting a bead size of the weld bead to be formed in the plurality of virtual bead layers depending on a bead shape in a section perpendicular to the reference direction.

Method for designing laminate molded article, production method, production device, and program

A method for producing an additively manufactured object includes melting and solidifying a filler metal to form weld beads and depositing the weld beads adjoining each other, thereby forming a weld-bead layer, and repeatedly depositing a next weld-bead layer on the formed weld-bead layer to conduct additive manufacturing. The method includes a bead formation step of forming a new weld bead so as to fill a recess formed by at least three of the already formed weld beads, in a cross-section perpendicular to a longitudinal direction of the weld beads.

Method and apparatus for manufacturing layered model

Using three-dimensional shape data, the shape of a blade, which is an additive manufacturing product, is divided into multiple layers according to the height of a bead. Each layer of the additive manufacturing product that has been divided into multiple layers is divided by fitting regions of a set shape. By determining connecting lines for connecting the divided regions to each other and computing the extension directions of protrusions, planned lines for bead formation along said extension directions are determined. The additive manufacturing product is shaped by forming beads along planned bead formation lines.

Additively-manufactured object by forming beads along a formation projected line of beads

A method for producing a built-up object, includes: producing maps beforehand, the maps indicating bead heights BH and bead widths BW corresponding to a base-surface inclination angle &#x3b8; and a track inclination angle &#x3c6;, in which the base-surface inclination angle is an angle between a base surface on which the weld beads are to be formed and a vertical direction, and the track inclination angle is an angle between a track direction of the torch and a vertical direction on the base surface; selecting a bead height BHand a bead width BWfrom the maps correspondingly to the base-surface inclination angle &#x3b8; and the track inclination angle &#x3c6; in forming a weld bead on the base surface; and forming the weld bead based on the selected bead height BHand bead width BW.

Method and device for manufacturing shaped objects

A method for producing a built-up object by melting and solidifying a filler metal to form weld beads on a base surface along a track for a torch and form the built-up object formed by the weld beads is provided. The built-up object includes a bead formation portion where a gravitational influence is maximum. The method includes: forming a supporting bead having a higher viscosity during weld-bead formation than other weld beads in the bead formation portion; and forming the other weld beads overlying the supporting bead.

Method for producing molded article, production device, and molded article

An information providing system provides delivery information using identification information of an object equipped with a wireless communication function. The information providing system includes a registering unit that registers in advance first link information linking the identification information of the object to the delivery information; a generating unit that generates second link information linking the identification information of the object to delivery information different from the delivery information of the first link information, based on the identification information of the object and identification information of a plurality of information terminals, acquired by communication with the information terminals, which can communicate with the object; and an information providing unit that delivers the delivery information linked by the second link information.

Information providing system, information terminal and information providing server, to update delivery information based on behavioral trends of plural terminals

A semiconductor power supplying apparatus driven by a power source includes at least two driven circuits for performing prescribed data processing when electric power is supplied. An electric power supplying circuit is provided so as to convert power from the power source as needed to supply at least two driven circuits with electric power in accordance with voltages that the driven circuits need. A driven circuit power supplying condition signal generating device is provided so as to generate a driven circuit power supplying condition signal for determining a power supplying condition of all of the at least two driven circuits. A power supplying control signal generation circuit is also provided so as to generate a power supplying control signal for controlling operation of the power supplying circuit. The power supplying control signal is generated from the driven circuit power supplying condition signal and determines an order of supplying power to the at least two driven circuits so that the at least two driven circuits can receive dependent power supplying.

Dependent power supplying apparatus and electronic instrument

A signal transmitting apparatus includes a sending part and a receiving part. The sending part converts each width of a plurality of digital input signals into a voltage in accordance with a predetermined weight, generates a send signal by adding voltages converted from the plurality of digital input signals, and outputs the send signal. The receiving part receives the send signal from the sending part, compares the send signal with a plurality of predetermined voltages, generates each of the digital input signals, and outputs each of the digital input signals.

Growing community of inventors

Nishinomiya, Japan

Tatsuya Fujii