Abstract: According to one implementation, a positioning device positions a hole inspection device to a hole formed in an object. The positioning device includes a guide unit and a detachable member. The guide unit has a positioning hole and a flat supporting face. A cylindrical or columnar positioning member is slidably inserted into the positioning hole. At least a tip of the positioning member is inserted into the hole. A central axis of the positioning hole and a reference line of the hole inspection device for measuring or inspecting the feature of the hole lie on a same straight line. The guide unit is set by contacting the flat supporting face to a surface of the object surrounding the hole or a flat surface of a jig placed on the object. The detachable member attaches a part or all of the guide unit to the hole inspection device.

Abstract: An object of the present disclosure is to provide a non-aqueous coolant composition having all of excellent insulation property, cooling capability, and flame resistance. This embodiment is a non-water coolant composition that comprises at least one halogen-based flame retardant selected from a fluorine-based oil and a chlorinated paraffin.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges finish the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges. The deflection reducer is formed between the first cutting edges and the second cutting edges. The deflection reducer is inserted into the prepared hole.

Abstract: It is an object of the present disclosure to provide a non-aqueous coolant composition that is excellent in insulation property and has improved heat transfer characteristics. The embodiment is a non-water coolant composition that comprises at least one amine compound as a non-aqueous base. The amine compound is at least one selected from the group consisting of an aliphatic amine compound, an aromatic amine compound, an alkanolamine compound, an amido amine compound, an amine oxide compound, a heterocyclic amine compound, and an ether amine compound.

Abstract: According to one implementation, a drill includes: a drill includes: a body without a back taper; and a cutting edge part integrated with the body. The body has a flow path of a cutting oil inside. The cuffing edge part has a first supply port that supplies the cutting oil toward a workpiece, The body has at least one second supply port that supplies the cutting oil to a clearance formed between a bush for positioning and the body. The bush is used by being inserted in the body.

Abstract: According to one implementation, a hole finishing tool includes a reaming cutter and a holder. The reaming cutter has a first detaching structure. The first flow path for ejecting cutting oil is formed inside the reaming cutter. The holder has a second detaching structure. The second detaching structure is detached from and attached to the first detaching structure. The second flow path for supplying the cutting oil to the first flow path is formed inside the holder. The holder has a shank. The shank is held by a tool rotating device. The holder has a sliding portion. The sliding portion has no back taper. The sliding portion is inserted into a positioning bush and slid inside the positioning bush. The sliding portion has a concave portion for storing lubrication oil.

Abstract: According to one implementation, a feeding device of a hole inspection device having a probe includes an attaching jig, a movement mechanism, and a positioning jig. The probe is inserted into a hole to be inspected of an object in a central axis direction of the hole, for inspecting the hole. The attaching jig attaches the hole inspection device to the feeding device. The movement mechanism linearly reciprocates the hole inspection device together with the attaching jig. The positioning jig positions the movement mechanism to the object. A moving direction of the attaching jig and the hole inspection device is made parallel to the central axis direction of the hole by positioning the movement mechanism.

Abstract: [OBJECT] To provide an evaporator which can improve heat exchange performance. [SOLVING MEANS] An evaporator including a metal wall and a porous metal film directly connected to the metal wall, wherein the porous metal film has communication holes having an average pore size of 8 ?m or less, and the porous metal film has a porosity of 50% or more.

Abstract: Provided is a film forming method of a corrosion resistant film having a corrosion resistance under acidic atmosphere and a corrosion resistant member on which the corrosion resistant film is coated. The film forming method of the corrosion resistant film includes: bringing a substrate made of aluminum into contact with an aqueous solution containing sulfate ions and fluoride ions; and heating the substrate to boil the aqueous solution on a surface of the substrate and forming a corrosion resistant film containing at least oxygen, fluorine, and sulfur in the aluminum derived from the substrate on the surface of the substrate.

Abstract: A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit switches between first control for changing the phases of switching elements in the first bridge circuit and switching elements in the second bridge circuit and second control for changing the switching frequencies (drive angular frequencies) of the switching elements, in accordance with target power, so that an inductor current flowing during a dead time of the switching elements becomes larger than or equal to a threshold current. The inductor current in the first control is larger than the inductor current in the second control.

Abstract: A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. The first full-bridge circuit is on a low-voltage side, and the second full-bridge circuit is on a high-voltage side. A control circuit soft-switches each switching element in the second full-bridge circuit, hard-switches at least one of the switching elements in the first full-bridge circuit, and soft-switches the other switching elements in the first full-bridge circuit. Accordingly, the DC-DC converter can achieve soft-switching while suppressing a decrease in power transfer efficiency.

Abstract: Provided is a vehicle including: a vehicle main body capable of traveling in both directions along a vehicle front-rear direction; a first radiator that is provided at an end of the vehicle main body on one side in the vehicle front-rear direction and performs heat exchange with an object-to-be-cooled provided in the vehicle main body through a refrigerant; and a second radiator that is provided at an end of the vehicle main body on the other side in the vehicle front-rear direction and performs heat exchange with the object-to-be-cooled through a refrigerant.

Abstract: A droplet jetting apparatus includes: a nozzle that ejects a jet of liquid droplets; a detector that detects a hand or an object in a flight path of liquid droplets from the nozzle; a pump including a suction portion for suction of liquid, and a discharge portion which is connected to the nozzle and discharges the liquid which has been sucked into the suction portion; a driver which by rotation of a cam, sucks liquid into the pump and discharges the liquid in a compressed state; and controller which actuates the driver. When the detector detects the hand or object, the controller actuates the pump by rotation of the cam, and ejects a jet of liquid in droplet form from the nozzle.

Abstract: A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit alternately turns on and off switching elements. At a dead timing when the switching elements are switched, an inductor current flowing through an equivalent inductor that is equivalent to the transformer and the inductor is larger than or equal to a threshold current. The threshold current is set so that the energy stored in the equivalent inductor becomes greater than or equal to the total energy stored in capacitors that are respectively connected in parallel with the switching elements.

Abstract: This disclosure provides a nonaqueous coolant composition that is excellent in insulation property and heat resistance and has improved heat transfer characteristics. The embodiment is a coolant composition that includes at least one ether compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.

Abstract: A DC-DC converter has a configuration in which a first full-bridge circuit and a second full-bridge circuit are connected via a transformer and an inductor. A control circuit causes output power to follow target power by changing switching frequencies (angular frequencies) of switching elements so that that an inductor current flowing during a dead time of the switching elements becomes larger than or equal to a threshold current.

Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property and heat transfer characteristic. The embodiment is a coolant composition that includes at least one carboxylic acid ester compound as a nonaqueous base and is substantially free of water.

Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property, heat transfer characteristic, and hydrolysis resistance. The embodiment is a coolant composition that includes at least one ketone compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.

Abstract: This disclosure provides a nonaqueous coolant composition excellent in insulation property, heat transfer characteristic, and rubber compatibility. The embodiment is a coolant composition that includes at least one saturated hydrocarbon compound having 6 or more carbon atoms as a nonaqueous base and is substantially free of water.

Abstract: According to one implementation, a drill includes the first cutting edges, the second cutting edges and a deflection reducer. The first cutting edges drill a prepared hole to a workpiece. The first cutting edges are formed in a tip side of the drill. The first point angle and each first relief angle of the first cutting edges continuously or intermittently decrease from the tip side toward a rear end side of the drill. The second cutting edges ream the prepared hole. The second cutting edges are formed at positions away in the rear end side from the first cutting edges. The second cutting edges have the second relief angles at a maximum diameter position. The deflection reducer reduces deflection of the second cutting edges. The deflection reducer is formed between the first cutting edges and the second cutting edges. The deflection reducer is inserted into the prepared hole.