Honda Giken Kogyo Kabushiki Kaisha

Hiroyuki Nomura

Hisayuki Sakurai

Minoru Hiroyasu

Satomi Isibasi

Hiroyuki Fukushima

Masatomi Ito

Shigemitsu Nomura

Nobuhiko Yoshimoto

Kiyonobu Mizoue

Hitoshi Karasawa

Hiroaki Mase

Takuji Kondou

Yuzo Yoshioka

A cutting tip having a three-layer laminated structure is provided. The tip is made from a disc-shaped three-layer laminate wherein a second layer consisting of a hard sintered compact of CBN or diamond is sandwiched by a first layer and a third layer consisting of a tool material such as cemented carbide. Prismatic blanks of rectangular cross-section are cut out by cutting the three-layer laminate in strips. Semi-completed tips of a desired shape are obtained by cutting up the prismatic blanks. Desired cutting edges are formed on the semi-completed tips to produce completed tips. Because prismatic blanks are obtained from a three-layer laminate and semi-completed tips are cut out from the prismatic blanks like this, the semi-completed tips can be obtained in large numbers, yield is high, and the manufacturing cost of the tip can be reduced.

Cutting tip and method thereof

Cutting tip and manufacturing method thereof

A composite plating apparatus is disclosed in which an insertion electrode is loosely inserted into a hollow cylinder having a space, air bubbles are mixed into a composite plating solution fed from a liquid feeding pipe toward the space in the cylinder, and the hollow cylinder is connected to a base electrode so as to perform a composite plating on the inner surface of the hollow cylinder. An air bubble dispersing member having at least one passage hole with a diameter the same as or larger than a length of a gap defined between the insertion electrode and the inner surface of the cylinder is arranged upstream of a plating solution inlet portion of the hollow cylinder as an apparatus for dispersing air bubbles within the composite plating solution. The air bubble dispersing member can also be used as an electrode engaging member for engaging a tip end portion of the electrode inserted into the hollow cylinder.

Composite plating apparatus and apparatus for dispersing air bubbles

A hollow member whose internal surface is to be applied with composite plating is held in a condition in which a generatrix of the internal surface extends vertically. An electrode is inserted into the hollow member with a predetermined clearance to the internal surface of the hollow member. A composite plating liquid supply passage has a discharge opening which is in communication with an opening at a lower end of the hollow member. A gas is entrained in a form of bubbles into a composite plating liquid which is supplied into the clearance through the supply passage.

Method and apparatus for applying composite plating on hollow member

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Sayama, Japan

Hiroyuki Nomura