Provided is a feed shaft control method, wherein a speed feedback loop having a speed controller is disposed within a position feedback loop having a position controller, forming a cascade coupling, and an acceleration feedback signal which is outputted from a compensator on the basis of an output signal of an acceleration detector is subtracted from a torque instruction. Furthermore, the method implements control wherein a speed is acquired on the basis of the output signal of the acceleration detector, and a signal obtained by multiplying the acquired speed by a gain is added to a speed instruction which is outputted from the position controller.

A method is disclosed that includes the operations below. A lot is dispatched for N process stages of process stages, according to arrival durations of the lot arrived at the N process stages and process durations of the lot predetermined to be processed at the N process stages, in which N is a positive integer. A first tool of tools at each one of the N process stages are assigned for the lot, in which the lot is configured to be dispatched to the first tool at a first process stage of the N process stages according to a first arrival duration of the arrival durations of the lot arrived at the first process stage and remain operation durations of the tools at the first process stage.

A method is proposed for controlling tool change operations on a machine tool, wherein a machining procedure on a workpiece includes a sequence of machining operations having in each case a particular tool and in each case a particular duration, and for a tool change, tools of a tool spindle are provided by a second storage device in communication with a first storage device, and wherein there is associated with the machining procedure a sequence of tool provision operations in which a tool provision operation has in each case a particular duration, wherein the method includes a determination stage wherein the durations of the machining operations and the tool provision operations are determined, and a control stage wherein the tool provision operations are temporally grouped in relation to the machining operations such that the tool provision operations bring about a minimized idle time in the machining procedure.

Provided is a feed shaft control method, wherein a speed feedback loop having a speed controller is disposed within a position feedback loop having a position controller, forming a cascade coupling, and an acceleration feedback signal which is outputted from a compensator on the basis of an output signal of an acceleration detector is subtracted from a torque instruction. Furthermore, the method implements control wherein a speed is acquired on the basis of the output signal of the acceleration detector, and a signal obtained by multiplying the acquired speed by a gain is added to a speed instruction which is outputted from the position controller.

Method for manufacturing a workpiece with a predefined sequence of machine tools by a computer-controlled manufacturing machine with an optimal tool configuration, wherein the initial locations of the tools are allocated, first and second time transfer time functions are calculated for all tools, possible tool location sequences are generated, for possible tool location sequences a respective first cost factor is calculated, obtained tool location sequences are ranked in accordance with the respective first cost factor, the tools are transferred from their initial locations to the optimal locations in accordance with an optimal tool configuration, and the workpiece is manufactured with the optimal tool configuration by the manufacturing machine.