Nippon Steel Sumitomo Metal Corporation

Shinko Denshi Company Limited

Nippon Steel Corporation

Suzuki Motor Corporation

Shigeru Uchiyama

Takashi Miyagi

Yasuharu Tanaka

Misao Ogawa

Masaaki Kobayashi

Yuzuru Nishiguchi

Takatoshi Sasahara

A press-forming method which press-forms a final shaped article which comprises a top sheet part, vertical wall parts, and flange parts and which has at least one bent part in a longitudinal direction, which method forms the top sheet part, vertical wall parts, bent part, and flange parts, includes a first shaping process of bending a flange part at an intersecting part until an angle of the flange part with a horizontal line becomes &#x3b1;in a plane which includes a horizontal line which connects an intersecting part of a vertical wall part and a flange part and a center of curvature of the bent part and which is vertical to the high strength steel sheet and a second shaping process of additionally bending the flange part after the first shaping process at the intersecting part until the angle of the flange part with the horizontal line becomes &#x3b1;in that plane, makes the additional bending angle &#x3b2; of &#x3b1;-&#x3b1;predetermined ranges, and thereby reduces the warping and torsion of the final shaped article.

Press-forming method

A forming method that forms a press component with an L shape from a blank metal sheet, the press component having a top sheet section and a vertical wall section which is connected to the top sheet section via a bent section having a part curved in an arc shape and which has a flange section on an opposite side to the bent section, the top sheet section being arranged on an outside of the arc of the vertical wall section, the method including: disposing the blank metal sheet between a die and both of a pad and a bending die; and forming the vertical wall section and the flange section while at least a part of the blank metal sheet is caused to slide on a part of the die corresponding to the top sheet section.

Press-forming method of component with L shape

A method of producing an L-shaped product () which includes an L-shaped flat top wall (), an inside wall () extending and connected along an inside edge () of the top wall, and an outside wall () extending and connected along an outside edge () of the top wall, each of the inside and outside walls being terminated by flange () substantially parallel to the top wall, is disclosed. The method comprises the steps of: providing sheet metal material; providing a drawing die assembly; and stamping the sheet metal material by the drawing die assembly to produce an intermediate product. The method further comprises the steps of: providing a bending die assembly; and stamping the intermediate product by the bending die assembly to produce an L-shaped product completed.

Method of producing L-shaped product

A mechanism for converting a weight into a frequency by means of a tuning fork vibrator having a pair of elongated plate-like vibrating strips extending in parallel with each other, a lever unit with a power pivot, fulcrum pivot and a load pivot, and a base portion, both ends of the tuning fork vibrator being coupled with the power pivot of the lever unit and the base portion, respectively by means of thin plate-like members. The weight to be converted is applied to the load pivot of the lever unit and is transferred to the tuning fork vibrator by means of the lever unit. All the parts of the mechanism are formed integrally from a single plate.

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Tokyo, Japan

Shigeru Uchiyama