Gap, wear and tram measurement system and method for grinding machines
OwnerDarryl Dodson-Edgarsinventor
Life of this patent
Estimating the term…
Abstract
An apparatus and method for measuring the gap, tram, deflection, and wear of rotating grinding plates wherein inductive sensors are mounted in a recessed manner inset from the surface of a first grinding plate and located opposite recessed non-wear surfaces of a second grinding plate, thereby providing data by which plate gap and plate wear may be derived. A plurality of such sensors provide data by which plate tram and/or deflection may be deduced.
Claims19
In a refiner having a first and second grinding plate, opposed to each other, said second grinding plate having a recessed, non-wear surface area facing said first grinding plate, a dynamic measurement method for determining distances utilizable in calculating plate wear, said measurement method comprising the steps:
- measuring during refiner operation a first distance from said first grinding plate to a grinding surface of said second grinding plate;
- and
- measuring during refiner operation a second distance from said first grinding plate to said recessed non-wearing surface area of said second grinding plate.
In a refiner, a measurement system comprising:
- first and second opposed grinding plates mounted for relative rotation with respect to a given axis;
- said first grinding plate have a recessed area located at a known radius, said recessed area providing a recessed surface facing said second grinding plate;
- and
- a distance sensor positioned in said second grinding plate and directed toward said first grinding plate at said known radius such that said distance sensor senses the distance to the surface of said first grinding plate and the distance to said recessed surface;
- whereby the change in the resultants of a number of subtractions wherein the distance to the surface of said first grinding plate is subtracted from the distance to said recessed area for a number of repetitions represents the wear of the grinding plates.
In a refiner, a dynamic measurement system comprising:
- a first grinding plate having a grinding surface;
- a second opposed grinding plate having a grinding surface juxtaposed with respect to the grinding surface of said first grinding plate and a recessed non-wearing surface area;
- facing said first grinding plate;
- and
- distance measuring means in said first grinding plate for measuring during refiner operation, a first distance from said distance measuring means to the grinding surface of said second grinding measuring means to the non-wearing surface area of said second grinding plate;
- whereby the change in the resultants of a number of subtractions wherein the first measured distance is subtracted from the second measured distance for a number of repetitions represents the wear of the grinding surfaces on the first and second grinding plates.
In a refiner having a first and second grinding plate, each having a grinding surface opposed to the other, a sensor means countersunk below the grinding surface of the first grinding plate, and a non-wear surface area countersunk below the grinding surface of the second grinding plate, a dynamic measurement method for determining distances utilizable in calculating plate wear, said measurement method comprising the steps:
- measuring during refiner operation a first distance from the sensor means in said first grinding plate to the grinding surface of said second grinding plate;
- measuring during refiner operation a second distance from the sensor means in said first grinding plate to the non-wear countersunk surface area of said second grinding plate.
Dependencies are inferred from the claim text.