Rolling process

{
  "publication_number": "US3869896A",
  "country": "US",
  "kind": "A",
  "title": "Rolling process",
  "abstract": "A rolling process for the fabrication of rolls in which a roll to be grooved is supported by a backing roll having a soft, resilient, abrasion-resistant outer layer having a range of hardness from about 40 Shore A to about 100 Shore D durometer.",
  "claims": [
    "1. A rolling process for fabricating patterns in cylindrical rolls comprising providing a substantially smooth surfaced cylindrical work roll, impressing a pattern into said cylindrical work roll with an impression device while said cylindrical work roll is rotated about its axis and supported by a soft, resilient, abrasion resistant, freely rotatably substantially cylindrical backing roll. A rolling process for fabricating patterns in cylindrical rolls comprising providing a substantially smooth surfaced cylindrical work roll, impressing a pattern into said cylindrical work roll with an impression device while said cylindrical work roll is rotated about its axis and supported by a soft, resilient, abrasion resistant, freely rotatably substantially cylindrical backing roll.",
    "2. A rolling process according to claim 1 wherein said cylindrical work roll is rotated about its axis and supported by said cylindrical backing roll mounted on a thread rolling machine having at least two independently driven dies.",
    "3. A rolling process according to claim 2 including replacing one of said dies with said cylindrical backing rolls.",
    "4. A rolling process according to claim 3 including disengaging the drive of said cylindrical backing roll.",
    "5. A rolling process according to claim 4 including bringing said cylindrical backing roll and said impression device into contact with said cylindrical work roll before rolling starts.",
    "6. A rolling process according to claim 1 wherein said cylindrical backing roll comprises a surface layer of a soft, resilient, abrasion resistant composition adhering to a metal core.",
    "7. A rolling process according to claim 6 wherein said composition has a hardness from about 40 Shore A to about 100 Shore D durometer.",
    "8. A rolling process according to claim 6 wherein said composition has a hardness from about 70 to about 95 Shore D durometer.",
    "9. A rolling process according to claim 6 wherein said composition is selected from the group consisting of polyurethane polyisoprene, polybutadiene and nylon.",
    "10. A rolling process according to claim 6 wherein said cylindrical backing roll comprises from about one to about three inches of said surface layer of said composition adhering to said metal core.",
    "11. A rolling process according to claim 1 wherein said impression device comprises a trihelicoid thread pattern from about 180 to about 240 threads per inch at about a 45* lead, a thread configuration of about 0.005 inch pitch, about 0.001 inch top land, and about a 35 to about 65 micron depth.",
    "12. A rolling process according to claim 1 including impressing said pattern into said cylindrical work roll with said impression device at a pressure of from about 11,000 to about 15,000 pounds per square inch while said cylindrical work roll is rotated about its axis and supported by said rotating cylindrical backing roll.",
    "13. A rolling process according to claim 12 wherein said cylindrical backing roll counteracts said pressure to prevent deformation of said pattern impressed into said cylindrical work roll with said impression device.",
    "14. A rolling process according to claim 1 wherein said cylindrical work roll is about one inch in diameter and about nien inches in length.",
    "15. A rolling process according to claim 14 wherein said cylindrical work roll comprises an aluminum roll.",
    "16. A rolling process according to claim 14 wherein said cylindrical work roll comprises a copper roll.",
    "17. A rolling process according to claim 14 wherein said cylindrical work roll comprises a mild steel roll.",
    "18. A rolling process according to claim 1 including impressing said pattern into said cylindrical work roll with said impression device at a speed of about 150 revolutions per minute while said cylindrical work roll is rotated about its axis and supported by said cylindrical backing roll."
  ],
  "cpc": [
    "G03G 15/102",
    "B21B 27/00",
    "B21H 3/04",
    "B44B 5/0047",
    "Y10S 72/703"
  ],
  "assignees": [
    "XEROX CORP"
  ],
  "filing_date": "1973-12-17",
  "publication_date": "1975-03-11",
  "grant_date": "1975-03-11",
  "priority_date": "1972-06-26",
  "application_number": "US-42537573-A",
  "family_id": "26951668",
  "citations": [
    "US1459669A",
    "US1487591A",
    "US2114072A",
    "US2346174A",
    "US2638050A",
    "US2695857A",
    "US3150707A",
    "US934335A"
  ]
}