Machining path generation device and numerical control device

Abstract

To provide a machining path generation device and a numerical control device equipped therewith which shorten the path during rough cutting of a workpiece, and thus can reliably shorten the cycle time. A machining path generation device which generates a cutting path upon rough cutting a workpiece a turning process, the device including: a storage unit which stores information of a cutting start point and a cutting end point of rough cutting of a workpiece; a finishing allowance permitted range setting unit which sets a finishing allowance permitted range which can be permitted in a finishing step of post process; and a cutting path generation unit which generates a cutting path connecting the cutting start point and the cutting end point in a cross-sectional view in a direction along a rotation axis line of the workpiece, so as to be arranged within the finishing allowance permitted range, and connect the cutting start point and the cutting end point to be shorter than a path following along a shape line of a product form.

Dependencies are inferred from the claim text.