摘要:
A method of compensating the measurement errors of a measuring machine (1) deriving from the deformations of a machine bed (2) of the machine (1) caused by a load exerted by a workpiece to be measured on the machine bed (2), characterized by a first acquisition step (15) in which data regarding the weight of the workpiece and the conditions of constraint of the workpiece on the machine bed are acquired by a measurement and control unit (12) of the measuring machine (1) and a second calculation step (16, 17, 18, 19) in which correction values depending upon said data are calculated by said measurement and control unit (12), wherein the first step (15) includes selecting a standard load condition representing the load of the workpiece from among a plurality of standard load conditions; and the second step includes the step of calculating values correlated to the deformation of the machine bed (2) under the load of the workpiece represented by the selected standard load condition as a linear combination of corresponding values resulting from predetermined basic load conditions.
摘要:
A measuring machine comprising at least one member mobile along an axis, a motor, a transmission system driven by the motor for displacing the mobile member along the axis, and a control system for controlling the motor, wherein a flexible coupling is set between said transmission system, and the mobile member is configured so as to filter the vibrations transmitted by the transmission system to the mobile member in the direction of the axis and to decouple the mobile member from the transmission system in a direction transverse to the axis.
摘要:
Disclosed is a method of determining geometric errors in a machine tool or measuring machine having a mobile unit for moving a target within a measuring volume. The method includes the steps of generating a succession of laser beams in different directions by means of an interferometer, and, for each direction, moving the target into a number of points along the beam; measuring, by means of the interferometer, the abscissa of each of the points from an origin located along the direction of the beam; acquiring the coordinates of each of the points by means of the machine; and determining error parameters of the machine on the basis of the abscissas measured by the interferometer, and the coordinates of the points acquired by the machine.
摘要:
A coordinate measuring machine (1) comprising a base (2) provided with guides (3) parallel ● to a first axis X, a first carriage (4) mobile on the guides (3) along the axis X and provided with an upright (17), a second carriage (6) carried by the upright (17) and mobile along a second vertical axis Z, and a horizontal arm (7) carried by the second carriage (6) and mobile along a third horizontal axis Y perpendicular to the axis X; the guides (3) of the first carriage (4) are arranged underneath a top wall (12) of the base (2), which is therefore flat and treadable.
摘要:
A measuring machine comprising a mobile unit provided with a plurality of members mobile along co-ordinate axes for moving a measurement sensor in a measurement volume, in which a laser sensor is associated to a mobile member and supplies values correlated with the dynamic deformation of the mobile unit; said values are processed for compensating for the measurement errors of the machine following upon the dynamic deformations.
摘要:
A coordinate measuring machine comprising a base provided with guides parallel to a first X axis, a first carriage mobile on the guides along the X axis and provided with an upright, a second carriage carried by the upright and mobile along a second vertical Z axis, and a horizontal-arm carried by the second carriage and axially mobile along a third horizontal Y axis perpendicular to the X axis; a counterweight, fastened to the second carriage by means of a belt, is mobile along the Z axis within the upright and is provided with wheels in contact with side walls of the upright.
摘要:
A coordinate measuring machine comprising a base provided with guides parallel to a first X axis, a first carriage mobile on the guides along the X axis and provided with an upright, a second carriage carried by the upright and mobile along a second vertical Z axis, and a horizontal-arm carried by the second carriage and axially mobile along a third horizontal Y axis perpendicular to the X axis; a counterweight, fastened to the second carriage by means of a belt, is mobile along the Z axis within the upright and is provided with wheels in contact with side walls of the upright.