60results about How to "Suppression defect" patented technology

The present invention provides a drill in which three main cutting edges (14) are provided at equal angular intervals around a drill shaft center (O), and a negative angled part (20) with a radial rake angle (phi) of a negative value is provided along a circumference of the main cutting edge (14). In addition, the radial rake angle (phi) of the negative angled part (20) ranges -20 DEG <= phi < 0 DEG, and a negative angle range (L) is 0.1D or less with respect to a drill diameter (D) from a circumferential corner. A part toward the drill shaft center (O) from the part (20) is a concaved shape smoothly concaved oppositely to the drill rotation direction. Thus, cut chip discharging performance and rigidity of a tool or cutting edge strength can be improved with good balance while preventing cutting resistance and thrust resistance from increasing. This can lead to highly efficient machining by high feeding. In addition, the drill can be appropriately used for boring various kinds of materials to be cut such as cast iron requiring relatively high rigidity, normal steel, and aluminum alloy with low dischargeablity of cut chips.

A pneumatic tire (1) comprises a tread portion provided along each tread edge with shoulder blocks (14) defined by a circumferentially extending shoulder main groove (9a) and shoulder lateral grooves (10a) extending from the shoulder main groove to the tread edge. The shoulder main groove (9a) is made up of groove segments (15) curved convexly toward the tire equator. The shoulder lateral grooves (10a) extend at 45 to 90 degrees with respect to the tire circumferential direction, and are coupled with the first inclined parts (15a) of the groove segments (15). The shoulder blocks (18) are each subdivided by a shoulder sub groove extending at an angle of from 15 to 45 degrees with respect to the tire circumferential direction. The shoulder sub groove has an axially outer end (18a) connected with the shoulder lateral groove (10a) and an axially inner end (18b) coupled with the second inclined part (15b).

The invention provides a motorcycle tire for running on rough terrain, which exhibits excellent driving performance on both soft terrain and hard terrain. Crown blocks (21) and middle blocks (41) are arranged such that at least part of the sidewall face of each of the middle blocks overlaps with the sidewall face of one of the crown blocks in the tire circumferential direction. Each of the crown blocks (21) has an axially long rectangular shape having a circumferential length shorter than the axial length. The top face of each middle block (41) has a substantially pentagonal shape having an axial inner side (45), a pair of transverse sides (46) extending axially outwardly from the axially inner side (45) and inclined so that the circumferential length of the top face of the middle block (41) is gradually increased, and a pair of axially outer sides (47) extending axially outwardly from the axially outer ends (46o) of the transverse sides (46) and inclined so that the circumferential length of the top face of the middle block (41) is gradually decreased. Only an axially inner part of the top face of each of each middle block (41) contacts with the ground under a standard load state.

The invention provides a high-capacity inflatable tire, which is capable of preventing rubber loss and damage and improving the nibbling performance. A tread part (2) of the high-capacity inflatable tire (1) has a main groove (3) and a land portion (4). The main groove (3) comprises a tire-shoulder main groove (3A). The land portion (4) comprises a central land portion (4A) and a tire-shoulder land portion (4B). The central land portion (4A) is spacedly provided with central pattern blocks (7). A tire-shoulder auxiliary groove (9) and a tire-shoulder transverse groove (10) are formed on the tire-shoulder land portion (4B). The tire-shoulder auxiliary groove (9) comprises an outer tire-shoulder auxiliary groove (9A) and an inner tire-shoulder auxiliary groove (9B). The tire-shoulder transverse groove (10) comprises an inner portion (10A), a central portion (10B) and an outer portion (10C). The tire-shoulder land portion (4B) is spacedly provided with an inner tire-shoulder pattern block row (11A), a central tire-shoulder pattern block row (11B) and an outer tire-shoulder pattern block row (11C). The spacing distance (P2) between the inner portion (10A), the central portion (10B) and the outer portion (10C) is smaller than the spacing distance (P1) of a central transverse groove (6).

The present invention provides methods and kits for determining the metabolic stability of compounds (e.g., stability to oxidative metabolism). In particular embodiments, the invention provides a method of determining the susceptibility of a compound to metabolism by an enzyme. In one representative embodiment, the enzyme is a cytochrome P450 enzyme. The invention is well-adapted for use in high throughput drug screening programs.

The invention provides a manufacturing method of an R-T-B sintered magnet. By adopting the method, a heavy rare earth element RH diffuses inwards from the surface of R-T-B sintered magnet raw materials without lowering the residula magnetic flux density, and the fracturing and damages of the R-T-B sintered magnet are inhibited. The manufacturing method comprises an R-T-B sintered magnet raw material preparing step, an RH diffusion source preparing step, a step for loading the R-T-B sintered magnet raw materials, RH diffusion sources and stirring auxiliary parts in a processing chamber; and an RH diffusion step for moving the R-T-B sintered magnet raw materials, the RH diffusion sources and stirring auxiliary parts and simultaneously heating the R-T-B sintered magnet raw materials and the RH diffusion sources. The size of each R-T-B sintered magnet raw material is larger than 1000mm3, and the maximum size is two times of the minimum size among the sizes in three orthotropic directions. Each RH diffusion source is smaller than 3 mm. The stirring auxiliary parts include a plurality of first ball bodies and a plurality of second ball bodies.

Multiple grooves (27) are formed and in each of said grooves, multiple insert seats (28) are formed and cutting inserts (30) are detachably disposed. The cutting inserts (30) have main cutting edges (34), corner cutting edges, and auxiliary cutting edges (35), and the main cutting edges (34) are formed with a wave form when viewed from the direction of the cutting face. The cutting inserts (30) are disposed so that in the rotation tracks formed by the main cutting edges (34) of the respective cutting inserts (30) when the roughing cutter (10) is rotated around the rotation center axis (O), the wave phases of the rotation tracks formed by adjacent cutting inserts (30) in a single groove (27) in the direction along the rotation center axis (O) coincide, and at least some of the cutting inserts (30) are disposed so that the rotation tracks formed by some of the cutting edge portions overlap each other in the rotation center axis (O) direction. As a result, even when said cutting edge portions are used as a main cutting edge portion and as an inner blade, cutting load is reduced and damage is limited.

The present invention provides an optical unit and an optical unit with a 3-axis shake correction function. An optical unit including a roll correction mechanism is miniaturized. The optical unit fixes a substrate on which an imaging element is mounted to a rotating pedestal that is separated from a lens unit and a lens holder, so that the rotating pedestal rotates to perform roll correction. A coil of a magnetic drive mechanism for roll and at least a part of the projection area in the optical axis L direction of the magnet overlap with the substrate on which the imaging element is mounted. Further, since a rotation support mechanism includes a bearing portion and a rotation support portion, and the rotation support portion is disposed radially outside the bearing portion, compared with aconfiguration in which two sets of ball bearings such as the bearing portion are arranged to overlap each other in the optical axis L direction, the thickness in the optical axis L direction is small. Therefore, the optical unit can be miniaturized, and the optical unit can be made lighter.

Provided are a cutting insert suitable for pocket machining of metal molds and the like, and an indexable cutting tool that uses the cutting insert. The cutting insert (10) is provided with: a rake face (14); a flank face (15); and a major cutting edge (11) that is formed on the intersecting ridge of the rake face (14) and the flank face (15), and that extends in the direction that intersects with the cutting direction of the rotary cutting tool. At least one partitioning section (12) that is not involved in cutting is provided in the middle of said major cutting edge (11) in a direction along the major cutting edge (11). The major cutting edge (11) is composed of two first cutting edges (11a) and second cutting edges (11b) separated by the partitioning section (12), and is configured in such a manner that, when the cutting insert is attached to the tool body (1) of the cutting tool, the cutting angles ([kappa]1, [kappa]2) between the first cutting edge (11a) and the second cutting edge (11b) falls in a range of 5 DEG and 20 DEG .

The present invention obtains a magnetic induction motor that, when core block pairs that sandwich magnet blocks are arrayed in an annular shape and are integrated, eliminates contact between magnet blocks and is able to suppress the occurrence of cracks or chips in the magnet blocks. In the present invention: a first stator core (9A) and a second stator core (9B) cause core block (10) pairs, which are configured by separating and superposing in the axial direction an arc-shaped core back section (10a) and core blocks (10) comprising teeth (10b) protruding inwards in the radial direction from the inner peripheral surface of the core back section (10a), to be configured arrayed in an annular shape in a manner such that the lateral surfaces in the peripheral direction of the core back sections (10a) contact each other; permanent magnets (12) are configured in a manner split respectively to the plurality of magnet blocks (13) sandwiched between the core block (10) pairs in a manner so as to fit within the core block (10) pairs; and the magnet blocks (13) have a base section (13a) sandwiched between the core back sections (10a) and of which the two lateral surfaces in the peripheral direction have an outer shape positioned at the inside in the peripheral direction from the two lateral surfaces in the peripheral direction of the core back sections (10a).

A drill is provided with a drill body that is rotated around the axial line, chip-discharging flutes (2) formed on the periphery of the drill body, and tip edges (7) formed on the intersection ridges between the chip-discharging flutes (2) and the tip surfaces of the drill body. The tip edges (7) have a first lip (21), which extends toward the base end of the axial direction as one follows the lip radially outward, and a second lip (22), which is disposed outside of the first lip (21) in the radial direction. The second lip (22) extends toward the tip in the axial direction or is perpendicular to the axis line as one follows the lip radially outward. The radially inside end of the second lip (22) is disposed on the axially base end side of the radially outside end of the first lip (21), and the radially outside end of the second lip (22) is disposed on a virtual extension (VL) of the first lip (21) that extends radially outward.

Cutting portion regions 16 of replaceable blades 15 that extrude outward in a radial direction at a plurality of portions in a peripheral direction of an outer periphery of a body 11 of a finger joint cutter are arranged in that, as for a cutting portion material that comprises cutting edge, tip end cutting portions 16a are formed of a steel material of high hardness and base portion side cutting portions 16b, which are the remaining portions, are formed of a steel material that exhibits a higher toughness than that of the tip end cutting portions. It is possible to improve the wear resistance through the tip end cutting portions and to improve the chipping resistance by the base portion side cutting portions. The steel material of high hardness comprising the tip end cutting portions and the steel material of high toughness comprising the base portion side cutting portions are successively joined through forge welding.

A composition for an optical material includes (a) a compound having two β-epithiopropyl groups and having a specific structure, (b) a compound having one β-epithiopropyl group and one glycidyl group and having a specific structure, (c) polyisocyanate and (d) polythiol, enables the prevention of the occurrence of such a defect that peeling traces linger on a lens. In the composition for an optical material, an embodiment in which (e) sulfur is additionally contained is preferred. Another embodiment of the present invention is a method for producing an optical material, characterized by adding an onium salt as a polymerization catalyst to the composition for an optical material in an amount of 0.0001 to 10% by mass relative to the total amount of the compound (a), the compound (b), polyisocyanate (c) and polythiol (d) and then polymerizing and curing the resultant mixture.

The objective of the present invention is to provide an anchor layer formation composition that can form an anchor layer that can increase the adhesiveness of an optical film and an adhesive layer by being interposed between the optical film and adhesive layer. The objective of the present invention is also to provide: an optical film that is provided with an adhesive layer, is able to exhibit superior durability and reworking properties, and can suppress the occurrence of defects in the adhesive layer; and an image display device that uses the optical film provided with an adhesive layer. The anchor layer formation composition is characterized by containing an oxazoline-group-containing polymer and an ionic compound having an anion component having a sulfonyl group and a cation component.

This invention is to provide a drill with a single cutting edge capable of stabilizing engagement with the work piece, preventing fractures of a chisel point to maintain high bore position accuracy over a long time, and causing less scatter of quality in manufacturing. The structure of this drill with a single cutting edge 3 and one chip flute 4 comprises multiple connected relief faces of the relief portion at the front end of the drill. At the foremost end of the drill is a first chisel edge, which is formed by the intersection of two relief faces and is perpendicular to the axial center and positioned at a rotary center of the drill. The first chisel edge is connected to the second chisel edge, which is formed by the intersection of two relief faces. The outer end of the second chisel edge is connected to the main cutting edge, where the opposite end of the second chisel edge is connected to the other end of the first chisel edge.

The invention provides a high-capacity inflatable tire, which is capable of preventing rubber loss and damage and improving the nibbling performance. A tread part (2) of the high-capacity inflatable tire (1) has a main groove (3) and a land portion (4). The main groove (3) comprises a tire-shoulder main groove (3A). The land portion (4) comprises a central land portion (4A) and a tire-shoulder land portion (4B). The central land portion (4A) is spacedly provided with central pattern blocks (7). A tire-shoulder auxiliary groove (9) and a tire-shoulder transverse groove (10) are formed on the tire-shoulder land portion (4B). The tire-shoulder auxiliary groove (9) comprises an outer tire-shoulder auxiliary groove (9A) and an inner tire-shoulder auxiliary groove (9B). The tire-shoulder transverse groove (10) comprises an inner portion (10A), a central portion (10B) and an outer portion (10C). The tire-shoulder land portion (4B) is spacedly provided with an inner tire-shoulder pattern block row (11A), a central tire-shoulder pattern block row (11B) and an outer tire-shoulder pattern block row (11C). The spacing distance (P2) between the inner portion (10A), the central portion (10B) and the outer portion (10C) is smaller than the spacing distance (P1) of a central transverse groove (6).

A transferable protective layer in a thermal transfer ribbon has a first layer formed upon a substrate and a second layer formed upon the first layer, said thermal transfer ribbon having a dye layer and the transferable protective layer repeatedly formed on one surface of the substrate. The first layer comprises: an acrylic resin (X) including a methyl methacrylate; an acrylic resin (Y) including a styrene-based resin; and a polyester resin (Z). The weight-average molecular weight of X is at least 120,000, the mass ratio between X and Y is 1:9-9:1, the mass of Z is 1%-3% of the total mass of X and Y.

The throwaway tip characterized that the shape is approximately square type plate late, and the corner angle of the another two corner tooth which adjoins each other of one face is made as 90 DEG or less, and the other two corner edge which counters respectively is made as non parallel cutting tooth, a corner angle of another corner cutting edge(11) is set to 90 deg.C or less. The throwaway type cutting tool characterized that two or more throwaway tip is the same as the throwaway tip, and the throwaway tips are arranged so that the other two corner tooth projects respectively to a perimeter side of a tip of a main part of a tool, in a throwaway type cutting tool that the two or more throwaway tips are arranged so that the tip is projected respectively to a tip side of a main part of a tool.

The present invention provides a cutting tool made of a silicon nitride-based sintered body with high fracture resistance, in which the residual stress on the rake face and the flank face is in an appropriate range. A cutting tool (1) is composed of a silicon nitride-based sintered body containing a silicon nitride-based phase at a ratio of 50% by volume or more and a titanium nitride-based phase at a ratio of 10 to 30% by volume. The intersecting ridge portion of the rake face (3) is used as the cutting edge (4), the residual stress received by the titanium nitride phase is tensile stress, and the tensile stress received by the titanium nitride phase of the rake face (2) is greater than Tensile stress on the titanium nitride phase of the flank (3).