Mitsubishi Materials Corporation

Mitsubishi Kinzoku Kabushiki Kaisha

Mitsubishi Metal Corporation

Casio Computer Co., Ltd.

Agency of Industrial Science and Technology Ministry of International

Izumo Industrial Co., Ltd.

Tatsuo Arai

Takayoshi Saito

Osamu Tsujimura

Masayuki Okawa

Masaaki Nakayama

Hiroshi Shimomura

Hidehisa Shiratori

Hiroaki Hayashizaki

Norio Aso

Kazuo Iizuka

Takamasa Shimano

Ryoei Hasegawa

Katsumi Haga

Junichi Saito

Yuji Kuriyama

Yoshihiko Kimura

Hiroyuki Suetaka

Tsuneharu Takeda

Nobuo Hiyama

Eiji Nakano

Kouichi Ikenaga

Sakae Komatsuzaki

Toru Narita

Takehiro Takada

Yasuzo Funaki

An image input deviceincludes a rotating rollersupported so as to be freely rotatable around a rotational axis thereof, wherein the rollerincludes a line image sensorand a Selfoc lens arraywhich are mounted not to rotate in the rotating rollerby a holder. The holderfunctions as a light guide to introduce the light emitted from light emitting elementsto a fingerwhich is pressed against the peripheral surface of the rotating roller. Selfoc lens arrayforms a one-dimensional optical image of the portion of the fingerwhich is in contact with the peripheral surface of the rotating roller, on the line image sensor, so that the line image sensorobtains the one-dimensional optical image. Then, the one-dimensional optical images are combined by a composite bufferin order, to create a two-dimensional optical image of the finger

Image input device

A digital camera stores captured picture data and E-mail address data inputted from a key entry unit in a flash memory so that they are associated with each other and then transfers the picture data and the E-mail address data to a personal computer via an I/O port or an infrared communication unit. The personal computer receives the picture data and the E-mail address data transferred from the digital camera via an I/O port or an infrared communication unit. The received picture data is then transmitted to a destination terminal on a computer network on the basis of the received E-mail address data.

Electronic camera having picture data output function

A cutting tool for a machine tool including a tool body, at least one cutting edge and a cutting medium supplier. The tool body has one and another end portions along an axis thereof and is configured to be attached to a machine tool at the another end portions to be rotatable. At least one cutting edge is provided on the one end portion of the tool body. The cutting medium supplier supplies an atomized cutting fluid or a chilled gas to a place where a work is cut by the cutting edge.

Cutting tool and method for supplying cutting medium to the same

An interface apparatus is inserted into a floppy disk drive unit so as to establish an infrared data communication between a desk top type personal computer and a digital still camera even when this desk top type personal computer is not equipped with an infrared communication port. This interface apparatus is arranged by employing: a casing unit having an entire shape substantially identical to that of a floppy disk and having a head window portion; a magnetic interface provided in the head window portion of the casing unit,and abutting against a magnetic head of a floppy disk drive so as to transmit/receive data to/from the magnetic head; a projected portion projected from a floppy disk insertion port of the floppy disk drive when the interface apparatus is loaded on the floppy disk drive; an infrared port arranged in the projected portion; an infrared port controller for controlling the infrared port to establish an infrared communication between the infrared port and an external electronic appliance; and a data converting circuit for converting the data used between the external electronic appliance connected via the connection mechanism to the interface apparatus, and the magnetic interface.

Interface apparatus operable by using floppy disk drive

To enable a rotary cutter to correspond to an automatic tool exchange apparatus by adjusting, in a peripheral direction, the position of a positioning member in response to an outlet of a chip container and a key and a key seat for receiving the key of a rotary cutter and a machine tool. A chip container having an outlet is mounted on the peripheral area of a cutter body with a bearing therebetween. An arbor of the cutter body is connected to a machine tool such that a key fits into a key seat, and at the same time a positioning pin of the chip container is inserted into a fitting recess of a spindle head. A movable block ring having the positioning pin is mounted on the chip container after adjusting in a peripheral direction, and is fastened with a bolt. Even when a key of the machine tool and a fitting recess differ in a peripheral direction, they can be adjusted. The relative position in a peripheral direction between the outlet of the chip container and the positioning pin can be adjusted.

Rotary cutter having chip-repelling mechanism

First and second tips 4A and 4B are disposed on the outer periphery of the forward end of an end mill body 1 in a manner such that the tips 4A and 4B are displaced from each other about the periphery of the end mill body 1. The rotation loci of edges of the first and second tips 4A and 4B around the axis O of the end mill body 1 are mutually overlapped. The edge of the first tip 4A protrudes slightly farther toward the forward end of the end mill than the edge of the second tip 4B. Further, third tips 4C are disposed adjacent to the base end of the second tip 4B in such a manner that no gap is formed between the rotation locus of the edge of the third tip 4C located most adjacent to the forward end of the end mill body and the rotation locus of the rear end of the second tip 4B. As a consequence, the second tip 4B and the third tips 4C can be spirally disposed in the rearward rotating direction of the end mill as they extend toward the base end of the end mill. The respective tips 4, moreover, are formed of only one type having the same shape and dimensions. With this construction, the maintenance of tips can be remarkably simplified, and the wear of the tips, in particular, the wear of the first tip 4A, can be inhibited, thereby accomplishing a uniformity of the degree of the wear of the overall tips.

Reusable type end mill

A disposable tip clamp mechanism capable of simplifying the mounting operation of a disposable cutting tip to produce an improved effect for preventing the dislocation of the tip is described. A screw member 36 having a screw hole 36a in the head 36c thereof is connected with the mounting screw hole 33 of a tip mounting seat 32, with the head portion 36c projecting from the tip mounting seat 32 and a disposable tip 37 is seated on the tip mounting seat 32 such that the engaging portion 37f thereof engages the head portion 36c of the screw hole-containing screw member 36.

Disposable cutting tip clamp for a milling machine

The invention is designed to improve a cutting performance and a spiral chip discharging ability. Main cutting edges 16 and auxiliary cutting edges 18 are formed along the respective sides of an upper surface 14 of a negative throw-away tip 12 and along side of bevelled corners, respectively. A rake face 22 of each main cutting edge 16 is gradually inclined toward a lower surface of the tip 12 by an angle of inclination .beta. along the extension of the main cutting edge 16 away from its adjacent auxiliary cutting edge 18 and by a rake angle .alpha. (&gt;.beta.) along a direction perpendicular to the main cutting edge 16. The tip 12 is mounted on a cutter 9 as a rotatable cutting tool so as to discharge spiral chips during cutting. To this end, the tip 12 is mounted such that an axial rake angle, a corner angle, an angle of inclination, and a true rake angle are set in a range of -4.degree. to -10.degree., a range of 25.degree. to 60.degree., a range of 0.degree. or larger, and a range of -20.degree. to -5.degree., respectively.

Throw-away tip and throw-away type cutter

A cutting insert having a generally polygonal tabular form, includes a main cutting edge formed along at least one of the ridges or edges of the upper and lower surfaces which oppose each other in the direction of the thickness of the tabular form, and a face connected to the main cutting edge is formed on the flank or flanks which surround and define the upper and lower surfaces. The face includes a convex curved surface and an angle of intersection between the convex curved surface and one of the upper and lower surfaces progressively changes. The angle of intersection between the convex curved surface and one of the upper and lower surfaces progressively increases or decreases along the length of the face from the face end adjacent to a free end of the tool to a face end adjacent to the base end of the tool. In a preferred embodiment, a flat surface is disposed on each side of the convex curved surface and each flat surface intersects one of the upper and lower surfaces at a constant angle. The flat surface adjacent to the face end adjacent to the free end of the tool intersects with one of the upper and lower surfaces at an angle which is greater or smaller than the angle of intersection between the flat surface adjacent to the face end adjacent to the base end of the tool and one of the upper and lower surfaces of the cutting insert.

Cutting insert

A cutting insert wherein cutting edges are formed on a pair of ridge portions of an upper surface and a pair of ridge portions on a lower surface in a staggered position relative to the ridge portions of the upper surface in a direction along the peripheries of the upper and lower surfaces. Rakes are formed on side surfaces of the insert body connecting to the cutting edges. Each rake has an inclination such as to be closer to a center of the upper or lower surface at a position remoter from the corresponding cutting edge. Each rake is formed of a curved surface which is formed along the side connecting to the cutting edge and which is curved along the peripheral direction so as to round out in an outward direction from the insert body, and a flat surface which obtusely intersects the curved surface and connect to a ridge portion opposite from the cutting edge formed along on the side of the rake. The positions and the shapes of the curved surface portions and the cutting edges are determined on the basis of the flat surfaces and the upper and lower surfaces. The insert can be prevented from shifting and the working accuracy can be improved by accurately forming the cutting edges and other portions.

Cutting insert and method of manufacturing the cutting insert

Face milling cutting insert having convex rakes with obtusely

A cutting tool is disclosed which includes a tool body having a mounting portion to be secured to a machine tool and having a plurality of insert receiving recesses formed therein. A plurality of cutting inserts are releasably attached to the insert receiving recesses, respectively. The tool body has a nitrided hard layer formed on a surface thereof. Furthermore, a clamp member used in the tool preferably has an abutment surface to be held in abutting contact with the insert or other parts and a chip-contacting surface with which cutting chips produced during cutting operation are brought into contact. The chip-contacting surface is defined by a nitriding hard layer formed on a precision-cast unglazed surface, and has a surface which is left without finish-working. Furthermore, a method for producing a cutting tool which includes a tapped hole formed therein and having an inner surface defining an unnitrided portion is disclosed. In this method, a plug is first threaded into the tapped hole. Subsequently, the tool body is subjected to nitriding treatment to form a hard layer on the surface of the tool body, and the plug is subsequently removed from the tool body.

Method for manufacturing a cutter

A cutting insert has a polygonal plate-like insert body defined by a front face, a back face, and a plurality of side faces lying between the front and back faces. A nose portion is defined by one of the corners of the front face. At least one cutting edge extends immediately from the nose portion. The cutting edge is defined by one of a pair of intersections of the front face with an adjacent pair of side faces sandwiching the nose portion therebetween. The front face includes an inclined surface sloping toward the back face in a direction away from the nose portion, causing each of the pair of intersections to incline toward the back face in a direction away from the nose portion. A breaker is formed on the inclined surface along the intersection of the inclined surface with a side face. The breaker has an inner surface for defining a rake surface portion more positively inclined to the corresponding cutting edge than that defined by the other area of the front face. The front face may be of a tetragonal shape with a pair of inclined surfaces that impart a V-shaped contour when viewed along a diagonal line interconnecting the corners of the front face other than those defining a diagonally-opposite pair of nose portions. A breaker on such an inclined surface may have a trough line inclined to a corresponding cutting edge. The insert body includes side faces each sloping along the thickness of the insert body at different angles between various regions of the side face, these regions corresponding to various locations of the front face where there are or are not inclined surfaces and where there are or are not corresponding cutting edges.

The invention relates to a cutting insert. The cutting insert has a polygonal tabular body having a main cutting edge and a sub-cutting edge. A rake surface connected to the main cutting edge and the sub-cutting edge is composed of a plurality of consecutive component surfaces so as to present a multi-face surface which is curved and convex along the circumference of the body. The consecutive component surfaces are demarcated from adjacent component surfaces by edges lines L.sub.1, L.sub.2 which at their one end reach the main cutting edge. The intersection angles at which the component surfaces intersect the end surface connected to the main cutting edge are so varied in a stepped manner that the intersection angle of the component surface most remote from the nose portion is the smallest. The third component surface is curved along the circumference of the body so as to be convex outward, so that the portion of the main cutting edge associated with this component surface is also curved to be convex outward.

Growing community of inventors

Kitamoto, Japan

Tatsuo Arai