Kobe Steel, Ltd.

Kabushiki Kaisha Kobe Seiko Sho

Yu Sumimoto

Takashi Sumitani

Shogo Sarumaru

Masao Murakami

Takayuki Fukuda

Naofumi Kanei

Tetsuya Yoshikawa

Koichi Honke

Yoshiaki Matsubara

Munenori Soejima

Toshikatsu Nonaka

Jumpei Fukuda

A tire testing machine is for testing a tire, comprising a free roller section configured to include a plurality of rollers having an endmost roller disposed downstream of a lubricator in a conveying direction and farthest from a predetermined reference position, the endmost roller being disposed such that a horizontal distance from the reference position is equal to or greater than a radius of a largest of a plurality of tires set in advance as objects of application of a lubricant.

Tire tester machine having a lubricator in a conveying direction

A moment calibrating apparatus () is provided with an elongated force transmitting member () for transmitting a force applied to the end portion thereof to a multi-component force gauge (), a load applying mechanism () for applying a load without changing the direction of the force along a direction perpendicular to said end portion, and a calculation unit () for calculating a true moment free from the effect of a perpendicular load on the basis of the moment value around the axis in the direction orthogonal to the perpendicular direction, measured by the multi-component force gauge () under the condition that said perpendicular load along the direction perpendicular to said end portion is applied by the load applying mechanism (), wherein a moment calibration of the multi-component force gauge () is performed using said true moment calculated by the calculation unit ().

Moment calibrating apparatus for multi-component force gauge and method of moment calibration

Disclosed is a multi-component force measurement spindle unit that accurately measures forces and moments applied to a tire in a tire testing machine. The multi-component force measurement spindle unit of a tire testing machine includes: a spindle shaft on which a tire can be mounted; an inner sleeve that rotatably supports the spindle shaft via a bearing part; an outer sleeve arranged on an outside of the inner sleeve along an axial center direction of the spindle shaft; a multi-component force measurement sensor that connects an end of the inner sleeve and an end of the outer sleeve to each other and is capable of measuring a load acting on the outer sleeve from the inner sleeve; and a cooling part that cools the inner sleeve.

Multi-component force measurement spindle unit of tire testing machine

A rotary drum used in a tire testing machine has a road surface base material made of an aluminum alloy and provided with a road surface onto which a tire is pushed. The road surface is coated with a thermally-sprayed steel film having higher hardness than the road surface base material, and polished. With such a configuration, a favorable test result can be obtained.

Road surface member for tire testing machine and manufacturing method of the same

A tire testing machine according to the present invention, which can measure both uniformity and dynamic balance of a tire T, comprises a spindle for driving the tire T to rotate about a vertical axis, a spindle housing which supports the spindle rotatably, and a rotating drum rotatable about an axis parallel to an axis of the spindle and movable toward and away from the tire T. The spindle housing is fixed to a base through a piezoelectric sensor so that it can bear a pressing force provided from the rotating drum. The piezoelectric sensor is disposed within a plane including the axis of the spindle and perpendicular to the pressing force. With this structure, dynamic balance of the tire can be measured accurately and easily.

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Takasago, Japan

Yu Sumimoto