Piping device and cutting oil coater using the same

Abstract

A piping device of the present invention includes an oil supply path, a narrower path connected with the oil supply path and having an inside diameter smaller than that of the oil supply path, an air space into which the oil is discharged from the narrower path, a wall defining the air space having a recess, and a plurality of branch paths into which the oil having impinged on the recess flows, wherein a vertex of the recess and an end of the narrower path face each other. This configuration makes it possible to suppress the uneven distribution of a flow rate of oil discharged into the air space. Furthermore, since the vertex of the recess and the end of the narrower path face each other, the discharged flow in which the uneven distribution of the oil flow rate is suppressed can be diverted with respect to the vertex of the recess as the center of the diversion. Thus, it is possible to allow flow rates of oil flowing into the respective branch paths to be substantially uniform with a simple configuration. As a result, it is possible to provide a piping device capable of stabilizing the relationship among flow rates of oil discharged from outlets even with use of a simple configuration, and to provide a cutting oil coater employing the same.

Dependencies are inferred from the claim text.