Toyota Jidosha Kabushiki Kaisha

Tomoaki Ihara

Shinobu Okuma

Shunsuke Tobita

Eiichi Ota

Yasuhiro Yogo

Yohei Tanigawa

Ryo Hattori

Hiroshi Nakamura

Satoshi Yamazaki

Kazuki Komoriya

Takahiro Harada

Daisuke Asami

Shinya Yamamoto

Masatomo Niihara

Takumi Shigemasa

Teppei Nishiguchi

Miyu Higashimura

Ryohei Kimbara

Kazunobu Okasaka

Toshihiro Nakaichi

Shoji Kawano

It is possible to improve heating efficiency of an end surface of an open trim edge. A processing method includes punching a steel plate to open a part of an end surface of the steel plate to form an open trim edge, and disposing a heating coil in a non-contact manner along the end surface of the open trim edge formed in the punching to sandwich the end surface of the open trim edge therebetween, and heating the end surface of the open trim edge by applying an alternating current to the heating coil to generate an induced electromotive force on the steel plate. A current direction of the heating coil disposed on one side of the end surface of the open trim edge is opposite to a current direction of the heating coil disposed on another side of the end surface of the open trim edge.

Processing method

A hot-press molding method of the present disclosure includes a first heating process in which a steel plate is heated and the entire steel plate becomes austenite, a first cooling process in which a cooling rate of the steel plate after the first heating process is partially changed, a first region which is a part of the steel plate is transformed into martensite, and a second region other than the first region remains as austenite, a second heating process in which the entire steel plate is reheated and the first region becomes tempered martensite, and a second cooling process in which the entire steel plate after the second heating process is cooled. At least one of the first cooling process and the second cooling process is performed during a molding process in which the steel plate is press-molded on a molding die.

Hot-press molding method and hot-press molded product

A control device that is mounted in a second vehicle which a first vehicle having a following travel function is detachably connected to or loaded on is provided. The control device includes a control unit configured to perform: detecting another vehicle that is within a predetermined range from the second vehicle in a state in which the second vehicle has the first vehicle connected thereto or loaded thereon and of which some or all of a scheduled travel route is the same as some or all of a scheduled travel route of the first vehicle after the first vehicle has been disconnected from the second vehicle; and transmitting following instruction information to the first vehicle and disconnecting the first vehicle from the second vehicle such that the first vehicle travels with the detected other vehicle as a preceding vehicle by the following travel function.

Control device, information processing device, and information processing method for instructing movement of a vehicle detachably connected to or loaded on another vehicle

A method for producing a steel plate member (SPM), including: a quenching step for heating the SPM to a temperature higher than an austenite transformation finish temperature Aand subsequently cooling the SPM at a cooling rate (CR) faster than an upper critical CR; and a tempering step for reheating a second region of the SPM to a temperature higher than an austenite transformation start temperature Awithout reheating a first region of the SPM after quenching and subsequently cooling the SPM at a CR slower than a lower critical CR. In the cooling process of the tempering step, the shape of the second region is corrected in a temperature range from a temperature equal to or lower than Ato a temperature equal to or higher than a temperature at which transformation into ferrite and pearlite is finished while maintaining the CR slower than the lower critical CR.

Method for producing steel plate member

A method for processing a steel plate capable of removing residual strain at a trim edge thereof without causing overheating in areas of the steel plate other than the trim edge. A method of processing a steel plate includes punching a steel plate and disposing heating electrodes in such a way that a trim edge punched in the punching is positioned between electrode surfaces facing each other and then heating a part of the steel plate including the trim edge.

Method for processing steel plate

Only a punched end is locally heated while a current value of a heating electrode is stabilized during heating. A forming and processing method includes punching a steel plate, and disposing a heating coil so as to face an end face of a punched end punched in the punching in a non-contact manner along the end face of the punched end and applying a current to the heating coil to generate an induced electromotive force in the steel plate, thereby heating the end face.

Forming and processing method

A method for producing a steel sheet member, includes: forming at least one pair of opposing strip grooves in a flat steel sheet such that one of the pair of opposing strip grooves is disposed in one of opposite surfaces of the steel sheet, the other of the pair of opposing strip grooves is disposed in the other of the opposite surfaces, and the strip grooves extend in a direction crossing a longitudinal direction of the steel sheet; heating the steel sheet having the strip grooves to a temperature higher than an austenite transformation finish temperature; and placing the heated steel sheet between an upper die and a lower die to press-form the steel sheet while cooling. When press-forming the steel sheet while cooling, there is space between each of the upper and lower dies and a bottom of a corresponding one of the strip grooves.

Steel sheet member and method for producing the same

A method for processing a steel plate includes punching a steel plate as a workpiece fixed to a punching die by a punch, making a first heating electrode provided on a punch holder for supporting the punch and a second heating electrode provided on the punching die face each other by maintaining the punch in a state in which the punch penetrates the steel plate and heating a part of the steel plate including a trim edge punched in the punching, and pulling out the punch from the punching die.

Method of processing steel plate and punching machine

A pallet that is stackable in an up-down direction in which upper end portions of a plurality of columns of a pallet disposed in a lower stage are inserted into inserted portions provided in lower end portions of columns of a pallet disposed in an upper stage. A height of at least one column is higher than heights of other columns.

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Toyota, Japan

Tomoaki Ihara