Gap indicating means for a rolling mill
AssigneeDavy-Loewy Limited
InventorAlan Foss
Life of this patent
Estimating the term…
Abstract
A rolling mill has a transducer for measuring the separation of a movable part of the mill from the fixed part of the mill. The transducer comprises a magnetostrictive element secured to one end of the fixed part, a transmitter for transmitting magnetostrictive signals into the element, a receiver for receiving signals reflected back along the element and a magnet secured to the other part which produces a magnetic field which serves to reflect the signals along the element. A timer measures the time interval between transmitting the energy and receiving the echo and this is representative of the distance between the two parts of the rolling mill.
Claims14
A rolling mill, comprising:
- a fixed mill housing;
- an upper roll assembly disposed within said fixed mill housing;
- a lower roll assembly disposed within said fixed mill housing;
- a nut disposed internally of said fixed mill housing;
- screw means disposed internally of said fixed mill housing and threadedly engaged with said nut for rotational and axial movement relative to said nut, said screw means also being operatively engaged with one of said upper and lower roll assemblies so as to move said one of said upper and lower roll assemblies relative to said fixed mill housing and said other one of said upper and lower roll assemblies so as to adjust the gap defined between said upper and lower roll assemblies;
- drive means disposed internally of said fixed mill housing and operatively engaged with said screw means for rotating said screw means relative to said nut whereby said screw means will axially translate relative to said nut and said fixed mill housing;
- an axially extending bore defined within said screw means;
- a first transducer component mounted upon said screw means;
- and
- a second transducer component mounted upon said fixed mill housing so as to project into said axially extending bore of said screw means and operatively cooperate with said first transducer component mounted upon said screw means for indicating the disposition of said screw means and said one of said upper and lower roll assemblies relative to said fixed mill housing and said other one of said upper and lower roll assemblies, and thereby said gap defined between said upper and lower roll assemblies.
Dependencies are inferred from the claim text.