Method for controlling a machine tool
AssigneeChiron-Wrke GmbH & Co. KG
InventorAnton Schweizer
Life of this patent
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Abstract
A method is described for controlling a machine tool that has a spindle which rotates at a variable rotation speed n about a spindle axis. The spindle carries a facing head that is fitted with a tool whose radial distance V from the spindle axis is adjustable by means of a control system. The distance V and/or the rotation speed n are modified as a function of a machining operation to be performed with the tool. In order to attain a desired distance V.sub.actual, the control system specifies a reference value V.sub.ref that is smaller than the desired distance V.sub.actual by a certain correction value .DELTA.V, the correction value .DELTA.V being calculated as a function of the desired distance V.sub.actual and the rotation speed n.
Claims13
A method for controlling a machine tool that has a spindle, rotating at a variable rotation speed n about a spindle axis, which carries a facing head that is fitted with a tool whose radial distance V from the spindle axis is adjustable by means of a control system, the distance V and/or the rotation speed n being modified as a function of a machining operation to be performed with the tool, wherein in order to attain a desired distance V.sub.actual, the control system specifies a reference value V.sub.ref that is smaller than the desired distance V.sub.actual by a certain correction value .DELTA.V, the correction value .DELTA.V being calculated as a function of the desired distance V.sub.actual and the square of the rotation speed n.
A method for controlling a machine tool that has a spindle, rotating at a variable rotation speed n about a spindle axis, which carries a facing head that is fitted with a tool whose radial distance V from the spindle axis is adjustable by means of a control system, the distance V and/or the rotation speed n being modified as a function of a machining operation to be performed with the tool, wherein in order to attain a desired distance V.sub.actual, the control system specifies a reference value V.sub.ref that is smaller than the desired distance V.sub.actual by a certain correction value .DELTA.V, the correction value .DELTA.V being calculated as a function of the desired distance V.sub.actual and the rotation speed n, wherein the reference value V.sub.ref is additionally reduced by a further constant correction factor V.sub.0 which corresponds to the reversing backlash upon displacement of the tool, wherein the machine constant c and/or the reversing backlash V.sub.0 are determined once, before the machining operation with the tool begins from a test measurement.
A method for controlling a machine tool that has a spindle, rotating at a variable rotation speed n about a spindle axis, which carries a facing head that is fitted with a tool whose radial distance V from the spindle axis is adjustable by means of a control system, the distance V and/or the rotation speed n being modified as a function of a machining operation to be performed with the tool, wherein in order to attain a desired distance V.sub.actual, the control system specifies a reference value V.sub.ref that is smaller than the desired distance V.sub.actual by a certain correction value .DELTA.V, the correction value .DELTA.V being calculated as a function of the desired distance V.sub.actual and the square of the rotation speed n, wherein the reference value V.sub.ref is additionally reduced by a further constant correction factor V.sub.0 which corresponds to the reversing backlash upon displacement of the tool.
Dependencies are inferred from the claim text.