摘要:
A polishing apparatus is provided with a machining head (212) that is supported to freely move in two horizontal directions; driving devices (211, 213) that enables the machining head (212) to move; a polishing jig (214) that is supported by the machining head (212) to freely move in a vertical direction; a polishing member (215) that is mounted on a lower end portion of the polishing jig (214); an air cylinder (226) polishing jig moving device that moves the polishing jig (214) and is capable of pressing the polishing member (215) against a tube support plate (43); and a drive motor (230) that is capable of rotating the polishing jig (21), thus, simplification of the structure is made possible.
摘要:
A hole drilling device and method include a drilling head (61), a plurality of hole drilling tools (63) detachably attached to the drilling head (61), a driving device (64) for allowing the drilling head (61) to move in the radial direction and axial direction of attachment holes (60) to be formed on a tube sheet (45), and a control device (65) for driving the driving device (64). The hole drilling tools (63) are disposed, in relation to the drilling head (61), along the arrangement direction of the attachment holes (60) and at an equal interval from one another, said interval being an integer multiple equal to or greater than double the pitch of the attachment holes (60); and the control device (65) drives the driving device (64) such that holes are drilled by means of the hole drilling tools (63) as the drilling head (61) moves with respect to each pitch of the attachment holes (60) in the arrangement direction of the hole drilling tools (63). As a consequence, it is possible to simultaneously drill a plurality of holes at once and to improve the performance of the drilling operation.
摘要:
A cleaning device of a porous plate for nuclear power including: cleaning tanks (72, 73) that is capable of storing a cleaning liquid therein and is capable of housing the porous plate (43) in an upright state; a rotation device (84) that is capable of rotating the porous plate (43) within the respective cleaning tanks (72, 73); and an ultrasonic wave oscillation device (111) that irradiates the porous plate (43) within the cleaning tanks (72, 73) with ultrasonic wave. Thus, it is possible to efficiently remove the adhered foreign substances.
摘要:
The present invention provides a hole drilling process and a drilling tool. The hole drilling process is for drilling a hole on a supported tube sheet (45) by using a first drilling tool (63a) that can drill a hole with a diameter smaller than that of a mounting hole (60) that is to become a target hole, and a second drilling tool (63b) that can drill a hole with a diameter equal to the diameter of the target hole, the process including: a temporary hole drilling step in which a temporary hole (60A) with a predetermined depth set beforehand is drilled by moving the first drilling tool (63a) to a drilled position set beforehand; a hole measuring step in which a distance (S) between an existing mounting hole (60) and the temporary hole (60A); a drilled position correcting step in which the drilled position is corrected based upon the distance (S) between the mounting hole (60) and the temporary hole (60A); and a target hole drilling step in which the target hole is drilled by moving the second drilling tool (63b) to the corrected drilled position.
摘要:
A broaching device is provided with puller heads (132,134) that hold tip portions of broaches (116) and are supported in a horizontally freely movable manner, main motors (136, 140) capable of moving the puller heads (132, 134), retriever heads (133,135) that hold base end portions of the broaches (116) and are supported in a horizontally freely movable manner, sub motors (138,142) capable of moving the retriever heads (133,135), and a control device (117) that enables the puller heads (132,134) and the retriever heads (133,135) to be synchronized with each other and to move at a fixed speed by controlling the motors (136,138,140,142), whereby machining accuracy can be improved.