Geometrical instruments – Gauge – With calibration device or gauge for nuclear reactor element
Patent
1997-01-17
1998-09-29
Fulton, Christopher W.
Geometrical instruments
Gauge
With calibration device or gauge for nuclear reactor element
73 179, G01C 2500
Patent
active
058131280
ABSTRACT:
Apparatus is provided for mounting a ball bar on a machine such that the ball bar can be rotated through 360.degree. in three orthogonal planes which intersect the center of a single ball (22) to calibrate relative movement between the spindle and a table of machine in all three planes. The apparatus consists of amounting device in the form of a block (10) on the machine table from which extends a rod (18) terminating in a socket (20) for supporting the ball (22). The rod extends from the block at a compound angle of 45.degree. to each of the three planes. The ball supports a socket on one end of a ball bar (34). A second mounting device is provided on the machine spindle in the form of a tool arm (26) from which extends a rod (28) terminating in a socket (30) for supporting a ball on the other end of the ball bar (34). The rod (28) extends at a compound angle of 45.degree. to all three planes. The ball bar is thus able to lie in any one of the three orthogonal planes and to be rotated through 360.degree. in each without fouling the mounting devices. The dimensions of the mounting devices are also arranged to be such that the ball bar does not foul the spindle or the table of the machine when being rotated in the vertical planes.
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patent: 5214857 (1993-06-01), McMurtry et al.
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Fulton Christopher W.
Renishaw plc
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