Method of manufacturing a magnetic strip magnet speed ring
AssigneeSauer-Danfoss Inc.
InventorsStanley N. Didier, Scott Kessler
Life of this patent
Estimating the term…
Abstract
A method of manufacturing a speed ring in a continuous process using a magnetizing fixture and a trimming fixture. An unmagnetized magnetic strip is fed into the trolley of a magnetizing fixture, clamped stretched, and magnetized by a coil. The newly magnetized strip is then cut and fed into a trimming fixture. As the magnetized strip goes through the trimming fixture, it runs over a hall effect sensor which determines where a center of a pair of poles is located. Based on where a pair of poles is located the cutting blade of the trimming fixture is activated and a magnetic strip that can be turned into a speed ring is created.
Claims11
The method of manufacturing a speed ring, steps comprising:
- feeding an un-magnetized magnetic strip from a coil into a magnetizing fixture;
- stretching the magnetic strip to a predetermined length;
- magnetizing the magnetic strip by sending an electric charge through the strip;
- cutting the magnetized strip and retracting the coil;
- advancing the magnetized strip to a trimming fixture having a Hall Effect sensor;
- detecting a center of a pair of poles with the Hall Effect sensor;
- cutting a first end of the magnetized strip;
- detecting the number of pairs of poles in the magnetizxed strip;
- cutting the magnetized strip at the center of the pair of poles, based on the number of pairs of poles to create a second end;
- and
- butting the first and second ends together.
The method of manufacturing a speed ring, steps comprising:
- feeding an un-magnetized magnetic strip from a coil into the slot of a trolley of a magnetizing fixture;
- clamping the magnetic strip into place;
- stretching the magnetic strip to a predetermined length to create spacing between magnetic poles;
- magnetizing the magnetic strip by sending an electric charge through the strip;
- cutting the magnetized strip and retracting the coil;
- advancing the magnetized strip to a trimming fixture having a Hall Effect sensor;
- detecting a center of a pair of poles with the Hall Effect sensor;
- cutting a first end of the magnetized strip;
- detecting the number of pairs of poles to determine a location of a final cut;
- cutting the magnetized strip at the center of the pair of poles to create a second end;
- and
- butting the first and second ends together.
Dependencies are inferred from the claim text.