Provided is a method of molding an elevator and an endoscope, the method making it possible to mold an elevator integrally with an operation wire with a simple operation. A method of molding an elevator (36) is a method of molding an elevator (32) integrally with an operation wire (40), the elevator (32) being to be disposed in a distal-end-portion body (32) of an endoscope (10). The method includes: a step of disposing the operation wire (40) to extend through a cavity (106), which is formed by a first die (102) and a second die (104) that are separable in a separation direction, in a state in which the first die (102) and the second die (104) are mated to each other and in which the separation direction and a wire-axis direction of the operation wire (40) coincide with each other; a step of integrally molding the elevator (36) and the operation wire (40) by injecting a molding material (108), which is a material of the elevator (36), into the cavity (106); and a step of separating the first die (102) and the second die (104) in the separation direction after molding the elevator.

Provided is a method of molding an elevator and an endoscope, the method making it possible to mold an elevator integrally with an operation wire with a simple operation. A method of molding an elevator (36) is a method of molding an elevator (32) integrally with an operation wire (40), the elevator (32) being to be disposed in a distal-end-portion body (32) of an endoscope (10). The method includes: a step of disposing the operation wire (40) to extend through a cavity (106), which is formed by a first die (102) and a second die (104) that are separable in a separation direction, in a state in which the first die (102) and the second die (104) are mated to each other and in which the separation direction and a wire-axis direction of the operation wire (40) coincide with each other; a step of integrally molding the elevator (36) and the operation wire (40) by injecting a molding material (108), which is a material of the elevator (36), into the cavity (106); and a step of separating the first die (102) and the second die (104) in the separation direction after molding the elevator.

The present invention is directed to a 4-bar kinematic link component and method for forming the 4-bar kinematic link using a single rotary molding tool. The invention eliminates the need to form individual components of the bracket from several different tools, which will then requires additional assembly steps. The 4-bar kinematic link is formed from two different materials each having a different in mold shrinkage value. This allows for hinge pins to be formed through a base component in a way that will prevent sticking of the components together thereby allowing the parts to have it relative to one another using the hinge pin. The final component is a 4-bar kinematic link that can be used as a 4 bar link mechanism for providing motion.

Provided is a method for producing an arm-like structure in which the arm-like structure is produced by: forming an arm precursor member having an external shape of the arm-like structure by, in a state in which a die is closed with a metal pipe member being disposed in a cavity thereof, pressurizing the pipe member with liquid supplied to an inside thereof to cause an external surface of the thus expanded pipe member to be pressed against an inner surface of the cavity; and forming a flange portion to be attached to a driven body by machining at least an end of the formed arm precursor member.

Provided is a method for producing an arm-like structure in which the arm-like structure is produced by: forming an arm precursor member having an external shape of the arm-like structure by, in a state in which a die is closed with a metal pipe member being disposed in a cavity thereof, pressurizing the pipe member with liquid supplied to an inside thereof to cause an external surface of the thus expanded pipe member to be pressed against an inner surface of the cavity; and forming a flange portion to be attached to a driven body by machining at least an end of the formed arm precursor member.

A process for forming a single crystal superalloy wave spring is provided. In one embodiment, the process may include machining a wave spring from a single crystal superalloy slab after optimizing its orientation using diffraction techniques so that the wave spring will exhibit optimal spring properties.

A method is provided for producing an assembly of an eccentric rod (15, 16) and a piston (20, 21) of a connecting rod of an internal combustion engine having an adjustable compression ratio. The method includes providing an eccentric rod (15, 16) having a first end (36, 37) for attachment to an eccentric lever of an eccentric adjusting device of the connecting rod and a second end (38, 39) for attachment to a piston (20, 21) that can be guided in a hydraulic chamber of the connecting rod. The method then includes arranging the second end (38, 39) of the eccentric rod (15, 16) in the piston (20, 21); introducing an injection-molding tool (47) into the piston (20, 21); and injection-molding a circumferentially closed retaining ring (43) between the piston (20, 21), the second end (38, 39) of the eccentric rod (15, 16) and the injection-molding tool (47).

The present invention is directed to a 4-bar kinematic link component and method for forming the 4-bar kinematic link using a single rotary molding tool. The invention eliminates the need to form individual components of the bracket from several different tools, which will then requires additional assembly steps. The 4-bar kinematic link is formed from two different materials each having a different in mold shrinkage value. This allows for hinge pins to be formed through a base component in a way that will prevent sticking of the components together thereby allowing the parts to have it relative to one another using the hinge pin. The final component is a 4-bar kinematic link that can be used as a 4 bar link mechanism for providing motion.

A method is provided for producing an assembly of an eccentric rod (15, 16) and a piston (20, 21) of a connecting rod of an internal combustion engine having an adjustable compression ratio. The method includes providing an eccentric rod (15, 16) having a first end (36, 37) for attachment to an eccentric lever of an eccentric adjusting device of the connecting rod and a second end (38, 39) for attachment to a piston (20, 21) that can be guided in a hydraulic chamber of the connecting rod. The method then includes arranging the second end (38, 39) of the eccentric rod (15, 16) in the piston (20, 21); introducing an injection-molding tool (47) into the piston (20, 21); and injection-molding a circumferentially closed retaining ring (43) between the piston (20, 21), the second end (38, 39) of the eccentric rod (15, 16) and the injection-molding tool (47).

A method for producing an arm structure in which the arm structure is produced by: forming an arm precursor member having an external shape of the arm structure by, in a state in which a die is closed with a metal pipe member being disposed in a cavity thereof, pressurizing the pipe member with liquid supplied to an inside thereof to cause an external surface of the thus expanded pipe member to be pressed against an inner surface of the cavity; and forming a flange portion to be attached to a driven body by machining at least an end of the formed arm precursor member.