Topy Kogyo Kabushiki Kaisha

Other

Watanabe Tekko Kabushiki Kaisha

Kishiro Abe

Takamitsu Takano

Katsuki Kato

Saburo Maruyama

Satoru Miyashita

Yuji Iwakura

Ryo Nishibayashi

Tsuneo Watanabe

Kenji Taguchi

Hiroshi Yamada

Kenji Fukuda

Shingo Tsukui

Koichi Ogiso

Yasunobu Teramoto

Yusaku Shinozawa

Isao Tanaka

Koji Takeuchi

Shojiro Yokomizo

Masakazu Ohi

Yuta Isomura

Masayuki Atari

Mitsuru Itoh

Yasuyuki Murata

Shunji Kobayashi

Ryoichi Watanabe

Morishi Kunou

Tetuya Miyano

Akira Ishida

Hisashi Yoshimura

Kenichi Inada

Yuichi Suzuki

Shun Yamada

Takenobu Hasegawa

Takanori Saito

Mitsunori Sugawara

Katsunori Todoko

Jun Sakuma

Kenji Hayashi

Takayuki Nonaka

Nobuyuki Soma

Masaaki Hara

Akira Nakamura

Tsutomu Enomoto

Kazunari Sano

Tatsuya Ohba

Kenichi Sakanoshita

A vehicle wheel disk and a manufacturing method thereof is provided. The vehicle wheel disk is manufactured from a disk material of a flat plate. The vehicle wheel disk includes a hub coupling portion, a disk flange and a hat. The hat includes a hat top protruding outwardly in an axial direction of the disk, a radially inner hat portion connecting the hat top and the hub coupling portion, and a radially outer hat portion connecting the hat top and the disk flange. In the vehicle wheel disk, a first thickness-reduced portion is smaller in thickness than the disk material that is formed at the radially outer hat portion.

Vehicle wheel disk and a manufacturing method thereof

A method of manufacturing a tubular member having a non-constant thickness by ironing at least a portion of the tubular material. The ironing apparatus can have a punch and a die, and the die can have a convex and concave side surface opposing the punch. The method can include bending an axial end portion of the tubular material to form a bent portion. The tubular material can then axially engage the die at the bent portion, and then the punch can be moved relative to the die to iron at least a portion of the tubular material.

Method of manufacturing a tubular member

A method of manufacturing a wheel rim for a vehicle includes an ironing step for ironing a tubular material to manufacture a tubular member having a non-constant thickness, using an ironing apparatus provided with a punch, a die whose side surface opposing the punch is a convex and concave surface, and a pressing member. At the ironing step, a flange portion of the tubular material is set at the die, then the pressing member is moved relative to the die thereby to squeeze the flange portion of the tubular material by the pressing member and the die, and then the punch is moved relative to the die to iron at least a portion of the tubular material except the flange portion of the tubular material to manufacture the tubular member having a non-constant thickness.

Method of manufacturing a wheel rim for a vehicle

A rim material having a non-uniform thickness, a rim manufactured from the rim material, and a method for manufacturing the rim from the rim material. The rim material includes a first material portion which forms an axially curved portion of the rim after the rim material is formed to the rim and a second material portion which forms an intermediate portion between adjacent axially curved portions after the rim material is formed to the rim. The first material portion has a thick parallel-surface portion including opposite surfaces parallel to each other. The parallel-surface portion has a width greater than a maximum amount of an axial dislocation of the parallel-surface portion expected to occur when the parallel-surface portion is formed to a corresponding curved portion. The second material portion has a thickness varying portion. The thickness varying portion includes a surface having a configuration defined by a line including a straight line and/or a slightly curved line.

Rim having a non-uniform thickness

A lightened disk for a wheel has a flange having an axially inboard edge. The inboard edge includes a general portion which is located in a plane perpendicular to an axis of the disk. The flange portion has a thickness less than 90% of a thickness of a disk material at at least the general portion of the inboard edge. A method for manufacturing a lightened disk for a wheel includes a drawing step during which the flange portion is drawn such than the flange portion has a thickness less than 90% of a thickness of a disk material at at least the general portion of the inboard edge.

Lightened disk for a wheel and a method for manufacturing the same

A garnish light alloy wheel includes a light alloy wheel and a garnish. The light alloy wheel includes an outboard surface and a recess located at a portion of the light alloy wheel including a spoke portion. The recess recedes from the outboard surface of the light alloy wheel. The garnish is manufactured separately from the light alloy wheel and is exchangeably mounted to the light alloy wheel at the recess. The light alloy wheel and the garnish construct a design surface of the garnish light alloy wheel, and the garnish has an outboard surface constructing a portion of the design surface of the garnish light alloy wheel.

Garnish light alloy wheel

A wheel for an automobile and a manufacturing method therefor wherein, in manufacturing a disc material portion from a substantially flat square plate, a length of the side of the substantially flat square plate is selected so that, after the subsequently formed disc is pressed into a rim, a most recessed portion of a ventilation is located axially outside a center of curvature of a well radius of the rim.

Wheel for an automobile and a manufacturing method therefor

A light-alloy wheel is cast using an apparatus wherein cores are moved by a cotter via a sliding mechanism. A sliding portion is isolated from molten metal so that locking at the sliding portion is unlikely to occur. The sliding mechanism can be of a small size and is disposed in an interior of a mold top segment with a relatively large gap between the cotter and the mold top segment. The gap assures a good heat dissipation from the mold top segment. In a molding method conducted using the apparatus, the cores may be positioned at a retracted position and extended before the molten metal has solidified to thereby remove blow holes in a cast wheel.

Method and apparatus for molding a light-alloy wheel

In a method for producing a cast aluminum wheel, a cast aluminum wheel is produced, and then all of three strengthening processes are applied to the cast aluminum wheel. The three strengthening processes include forging a portion of the cast wheel between adjacent boltholes, burnishing a nut seat of the cast wheel, and shot blasting a hub coupling surface of the cast wheel.

Method of producing a cast wheel

Wheel disk having a non-uniform thickness

A disk insertion apparatus for inserting a disk into a rim element of a disk wheel. The disk insertion apparatus includes a first disk inserting machine for preliminarily inserting a disk into a rim element and a second disk inserting machine for completing the insertion of the disk into the rim element to a predetermined, final position. The second disk inserting machine is mounted downstream of the first disk inserting machine along the rim flow lines.

Disk insertion apparatus for inserting a disk into a rim element of a

Growing community of inventors

Ayase, Japan

Kishiro Abe