| 摘要 |
A method of machining mechanical workpieces, in particular of machining the braking surfaces ( 2,3 ) of a brake disc ( 1 ) for vehicles is described and comprises the steps of loading the workpiece onto a work station ( 8 ) and clamping the workpiece in a median reference plane (A) between the opposed braking surfaces ( 2,3 ), as well as defining the excess material material thicnness to be removed from each of the said surfaces, with respect to the positioning coordinates of the said plane in relation to a system of working axes of the station, to achieve a balanced, centred division of excess metal removed from the said surfaces ( 2,3 ). The method also comprises the steps of preliminarily loading and clamping the workpiece on a handling device ( 7 ) operatively controlled by the work station ( 8 ) for the machining of the workpiece, the workpiece being gripped on the handling device ( 7 ) in the region of the said madian place (A), of bringing the said device ( 7 ), towards a workpiece-holder chuck ( 10 ) of the work station ( 8 ) with subsequent measurement of the positioning co-ordinates of the said median plane (A) in relation to the system of working axes, and of clamping the workpiece on the chuck ( 10 ) of the work station and releasing the handling device ( 7 ) to allow both of the opposed workpiece surfaces ( 2,3 ) to be machined in the said work station ( 8 ) by removal of the preselected excess material thicknesses calculated in relation to the positioning co-ordinates of the said plane (A).
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