G - Physics – 01 – B
Patent
G - Physics
01
B
G01B 5/10 (2006.01) G01B 7/12 (2006.01)
Patent
CA 2058852
Abstract of the Disclosure The invention relates to a device for the measurement of the diameter of a body such as a cylinder, more particularly in the form of a workpiece, on a roll grinding machine, comprising a contact wheel adapted to run on the surface of the body and a rotational pickup (angle encoder) centrally coupled with or provided with same, and furthermore a pickup, which is adapted to indicate at least full revolutions of the body. The invention is characterized in that the cylinder is also coupled with a rotational pickup (angle encoder), which like the other rotational pickup has high pulse rate, and for each measurement operation one respective start pulse and end pulse of one of these two pickups is utilized in order, with corresponding pulses of the second pickup, to calculate the diameter, in that a computer is provided which, by interpolation in each measurement operation of the registered pulses of at least one of the pickups and preferably that of the cylinder, produces at least one intermediate pulse series with increments, which are respectively smaller than the fixed increments of the pickup, of which one corresponds with such accuracy to the one end measurement pulse received approximately simultaneously of the one or normal pulse series of the other rotational pickup that for the input into the central processing unit of the computer a degree of progression, constituted by angle increments of the roll and relating to the roll periphery on the one hand and on the other hand a peripheral extent corresponding to this degree of progression, constituted by angle increments of the rotational pickup of the contact wheel, multiplied by a peripheral extentcorresponding to one of these angle increments, of the same for the calculation of the cylinder diameter on the basis of local angular velocity v, so determined, of the cylinder surface, of the angular velocity of the cylinder and of the known contact wheel diameter.
Baehr Theodor
Biener Peter
Krattenmacher Gerd
Gowling Lafleur Henderson Llp
J. M. Voith G.m.b.h.
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