Apparatus for the diameter checking of eccentric portions of a mechanical piece in the course of the machining in a grinding machine
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United States of America Patent
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Oct 18, 2005
Grant Date -
Jul 15, 2004
app pub date -
Apr 22, 2002
filing date -
May 7, 2001
priority date (Note) -
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Abstract
An apparatus (10) for checking the diameter of an eccentric pin (8′) of a small-size shaft (8), for example a shaft for compressors, includes a support (16), a first arm (19) rotating with respect to the support (16), a second arm (22) rotating with respect to the first, a Vee-shaped reference device (28) carried by the second arm, a measuring device (25,26,24,37,38) associated with the reference device, limiting devices (29,29′,30,30′) for limiting the rotations of the arms and thrust means (33) for keeping the reference device in contact with the pin in the course of the checking. A hydraulic actuator (13) displaces the apparatus (10) from a rest condition to a checking condition, in which the reference device (28) is in contact with the pin (8′) to be checked, and vice versa.
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