To prevent scraps from being generated in material taking by forming a hoop as well as bending a round pipe into a three dimension, manufacturing a frame body by warm blow molding the hoops, and manufacturing the whole part or a part of a body frame by combining the fame bodies.
Respective hoops 45A, 45B, 45C are formed by bending a round pipe into a three dimension. These hoops 45A, 45B, 45C are housed into cavities 19 of metal molds and warm blow molded, and molded articles W1, W2, W3 as frame bodies such as a door attaching frame are manufactured. The whole part or a part of the body frame is manufactured by combining the frame bodies of these molded articles W1, W2, W3. Therefore, scraps are not generated in material taking, the number of required parts can be drastically decreased, and the manufacturing cost composed of the preparing man-hour, the temporarily assembling man-hour, and the welding man-hour can be reduced.
KIYAMA HIROSHI
ASHINA TOSHIRO
CHIRIFU TAKASHI
KAIKAWA AKIHIRO
SASAKI SAKAE
IWATSUKI SHUICHIRO
MIYABE TAKAHISA
JPH0618674B2 | 1994-03-16 | |||
JPH02293275A | 1990-12-04 | |||
JPH0671364A | 1994-03-15 | |||
JPH0722888U | 1995-04-25 | |||
JPH061261A | 1994-01-11 | |||
JPS61124475U | 1986-08-05 | |||
JPS6288675A | 1987-04-23 | |||
JPS60135375A | 1985-07-18 |
Next Patent: SHOCK ABSORBING PEDAL BRACKET STRUCTURE