Nhk Spring Co., Ltd.

Hidenori Inoue

Hideki Fuchino

Naoki Iwamoto

A method of ripping a plate material having a resilient part, a frame, and an easily breaking part formed between the resilient part and the frame includes holding the frame between an upper pad and a die on a first side of the easily breaking part, moving a punch toward a lower pad that is retractable against pushing force, to clamp the resilient part between the punch and the lower pad on a second side of the easily breaking part, and driving the punch so that the punch guides the plate material and applies tension to the easily breaking part in a surface direction of the plate material, thereby ripping the plate material along the easily breaking part. The method is capable of ripping the plate material without causing burrs.

Method and apparatus for ripping plate material, and plate material

A method of cutting a laminated materialA made of at least first and second plates that are laid one on another and fixed together includes holding the laminated materialA between a padand a clamp base, so that an edgeof the first plateis positioned between an edgeof the padand an edgeof the clamp base; and cutting a protrusion of the second plateprotruding from the edgeof the first plateby moving a punchalong the padin a direction from the second platetoward the first plateand by using the first plateas a die to cut the protrusion of the second plate. The method is capable of precisely cutting the protrusion of the second plateprotruding from the edgeof the first platethrough a reduced number of processes.

Laminated material cutting method, laminated material, head suspension manufacturing method, and head suspension

A positioning apparatus has a pilot holder having a hold face, a positioning pin having a tapered tip and supported by the pilot holder so that the tapered tip protrudes from the hold face of the pilot holder, a pad having a pad face that opposes the hold face of the pilot holder, and a movable member having a stop face that opposes the positioning pin and a relief hole for avoiding the tapered tip of the positioning pin from hitting the stop face, the movable member resiliently supported on the pad. The pilot holder and the pad in which the thin plate material is set between the hold face and the pad face relatively move to insert the tapered tip of the positioning pin into the positioning hole of the thin plate material. The stop face is flush with or protruding from the pad face of the pad.

Growing community of inventors

Aikoh-gun, Japan

Hidenori Inoue