Patent ID: 7544025

Claim:
A double-spindle machine tool, comprising a frame ( 1 ); two tool-holder spindles ( 18 , 19 ), which have parallel axes of rotation ( 21 , 22 ) that are disposed at a distance ( 96 ) from one another; two work holding fixtures ( 32 , 33 ; 32 ′, 33 ′) for accommodation of a respective work ( 37 ; 37 ′); devices for displacement of the works ( 37 ; 37 ′) relative to the tool-holder spindles ( 18 , 19 ); wherein a work holding fixture ( 33 ; 33 ′) comprises a base plate ( 34 , 34 ′) and an abutment ( 45 ; 45 ′) which is adjustable parallel to a plane spanned by the axes of rotation ( 21 , 22 ) and crosswise of the direction of the axes of rotation ( 21 , 22 ); wherein the abutment ( 45 ; 45 ′) is provided with an adjusting device ( 53 , 53 ′); wherein a distance measurement device ( 97 ) is provided, detecting changes in the distance ( 96 ) of the axes of rotation ( 21 , 22 ); and wherein a control system ( 95 ) is provided, which is connected to the distance measurement device ( 97 ) on the one hand and to an actuating device for the adjusting device ( 53 ; 53 ′) on the other hand; and which is embodied for triggering the actuating device in dependence on the measured changes in the distance.