Abstract:
It is an object of the present invention to provide a method of manufacturing a cylindrical part with a thin-walled portion at a lower cost, and according to the manufacturing method of the present invention, a base metal formed with thin-walled portion adjacent to its closed end can be easily detached from working jigs. According to the method, a thin-walled portion is at first formed by the ironing process on a cylindrical wall adjacent to the closed end, so that an outer-side step portion is formed on an outer peripheral surface of the cylindrical wall. Then the closed end is punched out and the thin-walled portion is enlarged in a radial and outward direction to form an inner-side step portion on an inner peripheral surface of the cylindrical part.
Abstract:
An injection member of a molding machine is provided which can shorten the molding cycle and maintenance time, and prevent occurrence of galling between a cylinder member and an injection member. The injection member of the molding machine includes a supply section (P1) to which a molding material is supplied via a molding material supply port of the cylinder member, a compression section (P2) for melting and compressing the molding material supplied from the supply section (P1), and a metering section (P3) for metering the molding material supplied from the compression section (P2). The supply section (P1) has a pressure adjustment changeover point (q1) shifted rearward from its front end by a predetermined distance, and is divided at the pressure adjustment changeover point (q1). The pressure of the molding material is gradually reduced in a pressure gradual reduction area (AR1) from the rear end of the supply section (P1) to the pressure adjustment changeover point (q1). The pressure of the molding material is adjusted in a pressure adjustment area (AR2) from the pressure adjustment changeover point (q1) to the front end of the supply section (P1).
Abstract:
The present invention can include a frame member which attaches the monitor panel at a back side of a vehicle seat, a skin member covering the vehicle seat, a pad member having a seat outer shape, the frame member is harder than the pad member, and the frame member is arranged at a back side of the vehicle seat in place of the pad member and covered by the skin member and the monitor panel is attached to the frame member through the skin member.
Abstract:
A specimen optical information recognizing device comprises a specimen containing section (14) containing a specimen (12) to be measured, a specimen measuring section (20) having a light source (16) for outputting light for observing the specimen (12) and a photodetecting section (18) for collecting optical information from the specimen (12), and an optical waveguide (22) for propagating light between the specimen containing section (14) and the specimen measuring section (20). The optical information on the specimen is recognized by using the measurement values acquired under at least two measurement conditions. The specimen optical information recognizing device may further comprises a measurement auxiliary liquid interposed between the end of the optical waveguide and the specimen. Further, the specimen containing section may have a feature that the longitudinal cross section is of a recessed shape, and the aperture depth of the recessed portion is greater than the aperture diameter. The specimen containing section may further have a feature that a through hole is provided at least in a part near the bottom of the specimen containing section.
Abstract:
A coolant used for cooling down a stack of fuel cells includes: a solution mixture of water and a glycol as base material; and a rust-preventive additive that functions to keep an electric conductivity of the coolant at a low level and to maintain a hydrogen ion exponent of the coolant in a substantially neutral level. The rust-preventive agent includes at least one of an alkaline ethanolamine additive, such as triethanolamine, diethanolamine, or monoethanolamine, and an acidic additive selected among the group consisting of triazole compounds, phosphoric acid compounds, and organophosphoric acid compounds.
Abstract:
A coupling includes a first coupling member, a second coupling member, and a third coupling member being located in between the first coupling member and the second coupling member. The third coupling member has formed thereon a first pair of connecting elements diametrically opposed to one another and defining a first axis, and further has formed thereon a second pair of connecting elements diametrically opposed to one another and defining a second axis that is substantially perpendicular to the first axis. The first coupling member has formed thereon a third pair of connecting elements configured to conform to the first pair of connecting elements of the third coupling member. Formed on the second coupling member is a fourth pair of connecting elements configured to conform to the second pair of connecting elements of the third coupling member.
Abstract:
A method of stress inducing transformation from the austenite phase to the martensite phase by conducting cold working on material of austenite stainless steel in the temperature range from the point Ms to the point Md. The above cold working is a biaxial tensing. An intermediately formed hollow body is made, which includes a ferromagnetic portion and a non-magnetic portion contracting inward. Then, the intermediately formed body is subjected to a stress removing process in which residual tensile stress is removed from an intermediately formed body. In the stress removing process, it is preferable that a punch is press-fitted into the intermediately formed body so as to expand a non-magnetic portion and then the intermediately formed body is drawn with ironing while the punch is inserted so that the residual tensile stress can be changed into the residual compressive stress in the non-magnetic portion.
Abstract:
The present invention provides a cutting method of a ceramic honeycomb formed body 5 for cutting the ceramic honeycomb formed body 5 with a fine line stretched at an appropriate tension substantially at right angles to the direction of throughholes 9 thereof. The method comprises the steps of providing a cutting guide groove 10 running through the outer periphery of the ceramic honeycomb formed body substantially at right angles to the direction of throughholes 9, and putting a fine line 2 to the cutting guide groove 10, to cut the ceramic honeycomb formed body 5 only by pressing the fine line 2 against the ceramic honeycomb formed body 5. By using this cutting method, it is possible to cut a ceramic honeycomb formed body having thin partition walls of under 125 &mgr;m without causing a distortion. The possibility to reduce the cutting frequency of the fine line leads to possibility to improve the cutting efficiency.
Abstract:
A method of stress inducing transformation from the austenite phase to the martensite phase by conducting cold working on material of austenite stainless steel in the temperature range from the point Ms to the point Md. The above cold working is a biaxial tensing. An intermediately formed hollow body is made, which includes a ferromagnetic portion and a non-magnetic portion contracting inward. Then, the intermediately formed body is subjected to a stress removing process in which residual tensile stress is removed from an intermediately formed body. In the stress removing process, it is preferable that a punch is press-fitted into the intermediately formed body so as to expand a non-magnetic portion and then the intermediately formed body is drawn with ironing while the punch is inserted so that the residual tensile stress can be changed into the residual compressive stress in the non-magnetic portion.
Abstract:
An apparatus for cutting green ceramic bodies, includes a traveling path for green ceramic bodies, beds for supporting green ceramic bodies at constant intervals in series along the traveling path, an arm on each side of the traveling path, two drive portions for moving respective arms perpendicularly relative to the traveling path, a drive portion for moving both arms in the same direction as the traveling path, a wire for cutting green ceramic bodies, extending between the arms, and wire supporting portions, on respective arms. Each wire supporting portion includes a servo motor with an axis of rotation, a magnet member around the axis of rotation, a bobbin having a conical surface around which wire is wound, and magnetically coupled to the axis of rotation by the magnet member, and a traversing mechanism for varying the position where the wire is wound around the length of the conical surface.