Honda Motor Co., Ltd.

Kenzo Takeda

Yuichi Nagai

Hideo Meguri

Takayuki Egawa

Tadashi Goto

Tatsuo Yamanaka

Taisei Wakisaka

Shin Yoshida

Haruo Machida

Nobuyuki Kakiya

Ikuo Kato

Ichiro Kono

Shizuo Kimura

Shinichi Ohnaka

Naotake Marui

Jin Fukuda

Koichi Arai

Minoru Nakano

Yukio Uchiyama

Kiyoshi Satou

A panel inspection apparatus includes a resonant frequency extracting unit for extracting a plurality of resonant frequencies of a panel, a resonant frequency selecting unit for selecting a combination of resonant frequencies consisting of two resonant frequencies A and B with different vibration propagation paths among the extracted plurality of resonant frequencies, a non-defective range generating unit for generating a non-defective range on a coordinate system in which resonant frequencies A and B are taken on coordinate axes by statistically processing a set of the resonant frequencies A and B selected for each of a plurality of non-defective panels determined as non-defective in advance, and a panel quality determining unit for determining whether the quality of the panel to be inspected is good based on comparison between resonant frequencies A and B selected for the panel to be inspected and the non-defective range generated by the non-defective range generating unit.

Panel inspection apparatus and inspection method

In a press working apparatus, while a servo motor is acting, an upper die is made to come close to a lower die and press working of the first time is conducted on a steel plate. A slider is raised to a movable punch preparation position. A movable punch is protruded from a die face of the upper die by width and locked by a mechanical lock. The upper die is made to come close to the lower die again and the steel plate is pushed with the upper die and at the same time an additional worked portion is pushed and deformed with the movable punch so as to conduct press working of the second time. After the movable punch has been retracted, the slider is raised.

Press working method and press working apparatus

In a press working apparatus, while a servo motoris acting, an upper dieis made to come close to a lower dieand press working of the first time is conducted on a steel plate. A slideris raised to a movable punch preparation position. A movable punchis protruded from a die faceof the upper dieby width H and locked by a mechanical lock. The upper dieis made to come close to the lower dieagain and the steel plateis pushed with the upper dieand at the same time an additional worked portionis pushed and deformed with the movable punchso as to conduct press working of the second time. After the movable punchhas been retracted, the slideris raised.

A method of manufacturing a wheel rim by bringing end faces of a workpiece into abutment against each other to form a hollow cylindrical body and forming a circumferential recess which is depressed from an outer circumferential wall of said hollow cylindrical body toward an inner circumferential wall thereof, including providing protrusions disposed near ends of a joined area of the hollow cylindrical body and extending in a joining direction, and then pressing the outer circumferential wall of the hollow cylindrical body to form the recess.

Method of manufacturing a wheel rim

A method for molding a wheel rim hump part, comprising the steps of stopping a fist claw () and a second claw () holding a work (wheel rim for vehicle) (W) at specified positions and allowing an annular support member () to abut on the end surface of the curl part (C) of the work (W), closing a right side first mold () to support the curl part (C) and the outer peripheral wall surface of the work by the support mold () of the right side first mold (), also closing a left side first mold () to support the curl part (C) and the outer peripheral wall surface of the work by the support mold () of the left side first mold (), moving forward a long rod () to allow a roller metal mold () to abut on the inner peripheral wall surface of the work (W), and turning the roller metal mold () along the circumferential direction thereof.

Method and device for molding wheel rim hump part

Growing community of inventors

Tochigi, Japan

Kenzo Takeda