METHOD FOR MANUFACTURING BODY FOR WORKING FLUID CONTROL MECHANISM, AND METHOD FOR MANUFACTURING WORKING FLUID CONTROL MECHANISM USING BODY

摘要

PROBLEM TO BE SOLVED: To prevent a defect in shape from being generated in the surrounding wall of a valve insertion hole when a body for a working fluid control mechanism is manufactured by a three-dimensional lamination shaping method.;SOLUTION: A method for manufacturing the valve body (10) of an oil pressure control mechanism (1) including a valve insertion hole (31), into which the spool (3a) of a spool valve (3) is inserted, and a port (35) that communicates with the valve insertion hole (31) includes: a shaping step of shaping the valve body (10) in lamination in a portion which becomes the valve insertion hole (31), in which a surplus wall (36) remains, by a three-dimensional lamination shaping method; and a cutting step of forming the valve insertion hole (31) that communicates with the port (35) by cutting the surplus wall of the valve body (10) after the shaping step.;SELECTED DRAWING: Figure 4;COPYRIGHT: (C)2017,JPO&INPIT