A laser machining apparatus includes a height controller that performs an approach operation. The height controller uses a first approach speed and a first gain when performing the approach operation in a non-peripheral-edge portion of the workpiece, and uses a second approach speed lower than the first approach speed and a second gain lower than the first gain when performing the approach operation in a peripheral edge portion of the workpiece, and to make the time required when the approach operation is performed in the non-peripheral-edge portion of the workpiece shorter than the time required when the approach operation is performed in the peripheral edge portion of the workpiece.

An automatic position adjustment system of the present disclosure includes a position detection unit configured to measure the position of an installation target object installed on a table as viewed from a reference position as a reference installation point, a control device configured to calculate a displacement between the position of the installation target object obtained by the position detection unit and viewed from the reference position and a proper target position in installation of the installation target object as viewed from the reference position, and a position adjustment unit configured to correct the position of the installation target object to the target position based on the calculated displacement.

A numerical controller controls a machine tool that has a plurality of axes based on a program command. The numerical controller analyzes the program command. When the program command contains a positioning command, the numerical controller generates a correction path bent in a direction going away from the workpiece with respect to a straight-line path toward a commanded position from a current position of the tool that machines the workpiece, and controls respective axes of the machine tool based on the generated correction path.

Apparatus for machining an object, the apparatus comprising: a wheel including; a first circular surface; a second circular surface oriented parallel to the first circular surface; a first rim surface extending from the first circular surface at a first edge, a gradient of the first rim surface having a radial component; and a second rim surface extending from the second circular surface at a second edge and towards the first rim surface, a gradient of the second rim surface having a radial component, the first edge defining a curved surface between the first circular surface and the first rim surface, and the second edge defining a curved surface between the second circular surface and the second rim surface.