Jatco Corporation

Takefumi Suzuki

Hiroshi Miyazaki

Hiroki Matsui

Daisuke Nakagawa

Kenichi Ooshima

Tomoo Mochizuki

Yuji Torizawa

Kazuyuki Hosoe

In a specific state where an electric vehicle is in a stop state and a creep torque is generate in an electric motor (), when a shift range is switched from a traveling range to a non-traveling range, a motor control section (B) performs a torque decrease control to stepwisely decrease the creep torque of the electric motor (), and an automatic transmission control device () performs a disengagement control to gradually disengage the frictional engagement element of the automatic transmission ().

Electric-vehicle control device and control method

Chamfer processing is carried out by making plate material W end faces come in contact with rotating grinding belts. The grinding surfaces of the opposing side by side grinding belts are on the centerline in the thickness direction of the plate material. The center point is considered the pivot point as seen from the plate material end faces and in distance is smaller than the thickness of the plate material. Pivot motion of the plate material is carried out in the rotating direction of grinding belts. This chamfer processing method and device enables chamfer in a small curvature radius without applying a heavy tension load on grinding belts, and performs uniform deep chamfer processing of multiple plate material simultaneously.

Chamfer processing method and device for plate material

In the peripheral length correction device of metal rings, a metal ring is laid on a driving roller and a driven roller which are displaceable in mutually separating directions. One or both of the rollers are displaced while rotating the rollers, thereby applying tensile stress to the metal ring to correct the peripheral length thereof. The peripheral length correction device of metal rings further comprises a foreign substance removal head, which functions as the removal means for removing foreign substances adhered to the inner peripheral surface of the metal ring, and as the re-adhesion prevention means for preventing re-adhesion of the foreign substances removed by the removal means from the metal ring. There is provided a peripheral length correction device of metal rings which can prevent the reduction in production yield without damaging the rollers even if foreign substances (residual pieces of cutting metal or the like) adhere to the surface of the metal ring in a preceding process (solution treatment or the like) prior to the correction process.

Peripheral length correction device of metal rings

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Shizuoka, Japan

Takefumi Suzuki