Honda Motor Co., Ltd.

Yushi Aoki

Mitsutaka Igaue

Akira Goto

Kaoru Shibata

Hiroshi Saito

Tatsuro Ikeda

Noriko Kurimoto

Hideari Kamachi

Kazuki Akami

Shoji Matsuda

Shinichi Miyasaka

Kiyonobu Hara

Kensaku Kaneyasu

Noriaki Shigematsu

Kenichiro Ono

A resistance welding device is provided with a lower tip and an upper tip that serve as welding tips, and pressing rods that serve as pressing members. The upper tip and the pressing rods press a stacked body, which is to be welded, from the metallic plate side, which is the outermost member of the stacked body. The lower tip presses the stacked body from the lowermost metallic plate side. In this state, and electric current is conducted from the upper tip to the lower tip.

Welding method and welding device

A resistance welding method for welding a stack of three or more workpieces. The method includes the steps of holding a first welding tip in abutment against a first outermost workpiece, holding a second welding tip in abutment against a second outermost workpiece, and holding a pressing member in abutment against the first outermost workpiece. The method also includes the steps of gripping the stacked assembly with the first welding tip, the second welding tip, and the pressing member and passing an electric current between the first welding electrode and the second welding electrode.

Resistance welding method

High precision work is performed on a work target (workpiece) during conveyance, irrespective of the oscillations accompanying conveyance. A work method includes steps of: predicting a predicted oscillation pattern occurring in a workpiece (W) afterwards from the measurement results of oscillation occurring in the workpiece (W) during conveyance by way of a workpiece conveyance device (); controlling a robot () so as to operate at an oscillation according to the predicted oscillation pattern thus predicted; detecting oscillation occurring in the robot () during the step of controlling; and comparing the oscillation occurring in the robot () with the predicted oscillation pattern, and in the case of differing, adjusting so that the oscillation of the robot () matches the predicted oscillation pattern, in which each of these steps is completed before the robot () performs work on the workpiece (W).

Work method and work device

The intensity of first reflected ultrasonic waves reflected from an end of a first electrode tip is measured while the electrode tip is separated from a workpiece. The intensity of second reflected waves reflected from the end of the electrode tip is measured while the electrode tip contacts with the workpiece. Based on the above intensities, an intensity ratio (reflectance) and the fraction of the waves entering the workpiece are determined from the following equations: reflectance=(intensity of second reflected waves)/(intensity of first reflected waves) fraction of waves entering the workpiece=1&#x2212;reflectance. From a predetermined correlative relationship between a contact area of a region enabling ultrasonic waves to be incident on the workpiece and the determined fraction of the entering waves, a ratio (contact area ratio) is determined between a total area of the region and a contact area of the region contacting with the workpiece.

Method of evaluation using ultrasonic waves

A vehicle wheel alignment measuring method and apparatus capable of measuring wheel alignment of a vehicle body with high accuracy without wheels mounted in an assembly line. A dummy wheel () is mounted on a wheel mounting portion () on which a wheel is not mounted. Subsequently, with a vehicle body supported, a wheel mounting portion elevating means () elevates the wheel mounting portion () via the dummy wheel (). Thereafter, an alignment measuring means () measures wheel alignment for the wheel mounting portion () on which the dummy wheel () is mounted.

Vehicle wheel alignment measuring method and apparatus

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Utsunomiya, Japan

Yushi Aoki